A brake valve has a main body, a shaft movable within the main body, a spool plate, a first spring and a second spring arranged within the main body. The spool plate is movable between a release configuration and a brake configuration where the shaft is adapted to be linked with a first actuator configured to slide the shaft. The brake valve has a command fluid port connected to a brake chamber. A valve ring defines the brake chamber with the main body and the shaft. The valve ring is configured to, when a pilot pressure is applied in the brake chamber, move the shaft towards the actuated position or push the second spring so as to move the spool plate towards the brake configuration.
A process for start-up of a propulsion system for a vehicle displacement component. The propulsion system includes a hydraulic pump, a hydraulic motor fed by the hydraulic pump via a closed-loop hydraulic circuit, and an electric motor. The process for start-up includes the following steps, given a configuration when the propulsion system is at a standstill, in which the electric motor, the hydraulic pump and the feed pump are at a standstill, and the hydraulic motor is disengaged: start-up of the feed pump, starting up of the electric motor, setting in rotation of the hydraulic pump, adjustment of the displacement of the hydraulic pump and/or of the rotational speed of the electric motor for providing a flow rate corresponding to a setpoint on the hydraulic motor, start-up of the hydraulic motor.
F16H 61/4139 - Replenishing or scavenging pumps, e.g. auxiliary charge pumps
F16H 61/431 - Pump capacity control by electro-hydraulic control means, e.g. using solenoid valve
F16H 61/444 - Control of exclusively fluid gearing hydrostatic with more than one pump or motor unit in operation by changing the number of pump or motor units in operation
F16H 61/465 - Automatic regulation in accordance with output requirements for achieving a target input speed
F16H 61/47 - Automatic regulation in accordance with output requirements for achieving a target output speed
F16H 61/472 - Automatic regulation in accordance with output requirements for achieving a target output torque
3.
IMPROVED ARCHITECTURE OF AN ELECTROHYDRAULIC EXCAVATOR
The invention relates to an architecture of an electric excavator (1), comprising: a lower frame (10) comprising movement members (12) that are capable of moving the electric excavator, and at least one movable accessory (14) capable of being actuated by at least one hydraulic cylinder (15); at least one hydraulic circuit (16) capable of supplying the hydraulic cylinder (15) of the lower frame (10); and an upper frame (20) comprising at least one electric energy storage means (22) and a controller (24), the upper frame (20) being rotatable in relation to the lower frame (10) via a rotary collector (30), the hydraulic circuit (16) being arranged entirely inside the lower frame (10).
The invention relates to a rotary hydraulic machine (100) comprising: - a casing (2); - a shaft (20) mounted so as to rotate with respect to the casing; - brake disks (25) configured to stop the shaft from rotating with respect to the casing; - a static brake piston (30) configured to cause the disks (25) to compress as a result of a return member (32); and - a dynamic brake piston (40) configured to cause the disks to compress as a result of fluid pressure, the machine being configured such that the static brake piston (30) causes the disks to compress independently of the dynamic brake piston (40).
A method for controlling the traction of a vehicle hydraulic assistance circuit, including a target pressure is applied, a setpoint pressure and a theoretical value of a parameter are determined, a pressure setpoint is applied to the hydraulic pump, equal to the setpoint pressure, and an actual value is measured in the hydraulic assistance circuit. The actual value measured in the hydraulic assistance circuit is compared to the theoretical value, and if a gap between the actual value and the theoretical value is greater than a threshold value, a step of adjusting the setpoint is carried out in which the pressure setpoint of the hydraulic pump is modified so that it is equal to an actual pressure, to within an adjustment coefficient.
The invention relates to a brake system of a vehicle, the system comprising an electric motor assembly (M, M1, M2), a primary circuit (100), at least one secondary hydraulic circuit (300) comprising a secondary hydraulic pump (310), a current storage means (450) capable of storing the current generated by the electric motor assembly that operates in generator mode during nominal operation, a brake member (330) arranged at an outlet of the secondary hydraulic pump (310) that is calibrated so as to be open during nominal operation and so as to define a restriction at the outlet of the secondary hydraulic pump (310) during the presence of a malfunction in which the current storage means (450) is no longer able to store the current generated by the electric motor assembly (M, M1, M2).
B60T 1/10 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels by utilising wheel movement for accumulating energy, e.g. driving air compressors
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
F16H 61/00 - Control functions within change-speed- or reversing-gearings for conveying rotary motion
The invention relates to a pressure adapter (100) comprising a cylinder block (30), which has a plurality of bores (40), and pistons (50), which are slidably mounted in the bores (40), characterised in that the pistons (50) comprise a first set of pistons (50A) and a second set of pistons (50B), the cylinder block (30) has a first set of bores (40A) and a second set of bores (40B), each piston of the first set of pistons (50A) being slidably mounted in a bore of the first set of bores (40A) so as to form a first chamber (60), and each piston of the second set of pistons (50B) being slidably mounted in a bore of the second set of bores (40B) so as to form a second chamber (70), the first chamber (60) and the second chamber (70) defining different, separate volumes.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0474 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with two or more serially arranged radial piston-cylinder units
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F04B 5/00 - Machines or pumps with differential-surface pistons
The invention relates to a pressure adaptor (100), wherein the cam (20) has a first set of lobe portions (20A) and a second set of lobe portions (20B), each set of lobe portions being jointly connected to a valve, characterised in that the lobe portions associated with the first set (20A) define a first stroke for the pistons, and the lobe portions associated with the second set (20B) define a second stroke for the pistons, the first stroke being different from the second stroke, wherein the pistons passing through the first set (20A) of lobes perform a hydraulic motor function, so as to rotate the first set and the second set relative to one another, and the pistons passing through the second set (20B) of lobes perform a hydraulic pump function, so as to supply a pressure.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0474 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with two or more serially arranged radial piston-cylinder units
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F04B 5/00 - Machines or pumps with differential-surface pistons
Hydraulic machine in which each pair formed by a piston (50) and a housing (40) defines, between the piston (50) and the housing (40), a first chamber (60) and a second chamber (70) which are separate, the cylinder block (30) and the distributor (165) each having a plurality of inner ducts defining a first set of ducts and a second set of ducts, said sets of ducts opening at the interface between the distributor (165) and the cylinder block (30) in two distinct radii relative to the main axis (Z-Z) and being suitable for supplying the first chambers (60) and the second chambers (70), respectively.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0474 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with two or more serially arranged radial piston-cylinder units
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F04B 5/00 - Machines or pumps with differential-surface pistons
Hydraulic machine with radial pistons and a multilobe cam, in which each pair formed by a piston (50) and a housing (40) defines, between the piston (50) and the housing (40), a first chamber (60) and a second chamber (70) which are separate, characterised in that the hydraulic machine comprises a first distributor (160) and a second distributor (170) suitable for carrying out the intake and discharge of fluid into the first chambers (160) and into the second chambers (170), wherein the first distributor (160) and the second distributor (170) are arranged on either side of the cylinder block (30) in the axial direction (Z-Z).
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0474 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with two or more serially arranged radial piston-cylinder units
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F04B 5/00 - Machines or pumps with differential-surface pistons
The invention relates to a pressure adapter (100) comprising: a first assembly and a second assembly which are able to rotate with respect to each other about a main axis, the first assembly comprising a casing (10) and a cam (20), the second assembly comprising a cylinder block (30) having a plurality of bores (40) in which pistons (50) slide, each piston (50) being positioned in a bore (40), characterised in that each pair formed by a piston (50) and a bore (40) defines, between the piston (50) and the bore (40), a first chamber (60) and a second chamber (70) which are separate, the first chamber (60) and the second chamber (70) defining different displacements, wherein the assembly of the first chambers (60) acts as a hydraulic motor (110), suitable for being connected to a supply supplying a first flow Q1 at a first pressure P1 and for rotating the first assembly and the second assembly relative to each other, and the assembly of the second chambers (70) acts as a hydraulic pump (120), suitable for delivering a second flow Q2 at a second pressure P2.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0474 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with two or more serially arranged radial piston-cylinder units
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F04B 5/00 - Machines or pumps with differential-surface pistons
A hydraulic machine including an improved sweep circuit, adapted to form a primary sweep stream circulating from an inlet orifice successfully in a proximal portion, in a middle portion and in a distal portion of the hydraulic machine, then in the middle portion and in the proximal portion up to an outlet orifice.
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/0443 - Draining of the housingArrangements for handling leaked fluids
The hydraulic machine comprises: a cylinder block (12) having housings (14), and pistons (16) in the housings, each housing comprising a head area (66) and a base area (68), the base area being delimited by a main face (70) and having a cavity (72) beginning at the main face (70), extending in a direction from a base (48) of the housing towards the head area, and not blocking the piston in rotation.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
pptt) of the crown in the direction perpendicular to the axis, the base having a recess (32) opening on two opposite sides of the base at two respective ends of the recess opposite each other along a main axis (C-C) of the recess.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/0439 - Supporting or guiding means for the pistons
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
The invention relates to a fork (100) for supporting a hydraulic machine, the fork comprising: - a base (110) configured to be assembled on a chassis, the base (110) having an internal face (112) and an external face (116), - two arms (120, 130) extending from a proximal end (113) and a distal end (114) of the internal face (112) of the base (110), the arms (120, 130) being spaced apart and each having a through-gap (124, 134) aligned along a pivot axis (Z-Z) so as to define a housing designed to receive a hydraulic machine (300) mounted rotatably along the pivot axis (Z-Z) relative to the fork (100), the fork (100) being characterised in that it comprises a through-channel (125, 135) formed in each of the arms (120, 130) between the gap (124, 134) and the base (110), the base (110) having a groove (115) formed in its internal face (112) so as to form a continuous cable passage (300) with the channels (125, 135).
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0472 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with cam-actuated distribution members
The invention relates to an assembly comprising a fork (100) and a cover (300), the base (110) of the fork (100) defining a surface for connecting to a support member, the pivot axis (Z-Z) being in a pivot plane (Y-Y), the arm (120) comprising a plurality of housings (140), the cover (300) comprising a plurality of bores (340) that define, with the tapped holes (120), two sets of passages, the two housing assemblies defining a first position and a second position of the cover (300) relative to the fork (100), the cover (300) comprising a hydraulic duct (310) opening in a direction (V-V) that is inclined relative to the pivot axis (Z-Z), such that, in the first position and in the second position of the cover (300) relative to the fork (100), the hydraulic duct (310) is inclined at an angle greater than 10° relative to the pivot plane (Z-Z).
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0472 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with cam-actuated distribution members
17.
IMPROVED ASSEMBLY STRUCTURE FOR A STEERING YOKE OF A HYDRAULIC MACHINE
The invention relates to an assembly comprising a hydraulic machine (10) and a steering yoke (200), the hydraulic machine (10) comprising a rotor and a stator that are rotatable with respect to each other about an axis of rotation (X-X) extending in an axial direction, the hydraulic machine (10) comprising a casing (100), the casing (100) defining a pivot axis (Z-Z) separate from the axis of rotation (X-X), the steering yoke (200) being assembled on the casing (100), characterised in that the steering yoke (200) is assembled on the casing (100) via a plurality of assembly elements (320) extending in the axial direction.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0472 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with cam-actuated distribution members
B60K 17/30 - Arrangement or mounting of transmissions in vehicles the ultimate propulsive elements, e.g. ground wheels, being steerable
The present invention relates to an assembly for a traction assistance hydraulic circuit of a vehicle, the assembly comprising: a free-wheeling valve (1); a hydraulic pilot valve (2) connected to the free-wheeling valve (1) and configured to drive the free-wheeling valve (1); and a directional solenoid valve (3) connected to the hydraulic pilot valve (2) and configured to control the hydraulic pilot valve (2).
The invention relates to a hydraulic circuit for driving a bi-directional hydraulic actuator (200), comprising: - a hydraulic energy source (100), - a hydraulic actuator (200), - a pressure adaptation module (3000), - a first supply line connecting a first terminal of the hydraulic energy source (100) to a first port of the pressure adaptation module (3000), - a second supply line connecting a second terminal of the hydraulic energy source (100) to a second port of the pressure adaptation module (3000), - a first adaptation line connecting the pressure adaptation module (3000) to a first terminal of the hydraulic actuator (230), - a second adaptation line connecting the pressure adaptation module (3000) to the other terminal of the hydraulic actuator (230), the pressure adaptation module being suitable for modifying the pressure difference across the terminals of the hydraulic actuator (230) so that the pressure difference across the terminals of the hydraulic actuator (230) is different from the pressure difference across the terminals of the hydraulic energy source (100).
F16H 61/46 - Automatic regulation in accordance with output requirements
F15B 7/00 - Fluid-pressure actuator systems in which the movement produced is definitely related to the output of a volumetric pumpTelemotors
F15B 11/032 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the actuating force by means of fluid-pressure converters
The invention relates to a reducer (10), in particular to a reducer for an in-wheel motor, comprising a housing (12), an output hub (16) which is supported with respect to the housing (12) by at least one bearing (18), an input shaft (24) and at least one reduction stage (30A, 30B) which is configured to rotationally couple the input shaft (24) and the output hub (16) while changing the torque ratio and speed ratio between the input shaft (24) and the output hub (16), wherein the input shaft (24) is rotationally supported by the output hub (16) and the output hub (16) rotates as one with a planet carrier (36B) of the at least one reduction stage. The invention also relates to an in-wheel motor and to a vehicle comprising such a reducer.
A system having a primary machine, a hydraulic machine, and a frequency converter disposed in an assembly casing. The system further includes a cooling circuit, suitable for a same coolant to traverse a plurality of ducts suitable for cooling the primary machine, the frequency converter, and the hydraulic machine.
Disclosed is a system for driving a member (10) by means of a hydraulic circuit, comprising: a source (100) of hydraulic energy suitable for supplying a pressure in the hydraulic circuit; a driving member (200) comprising: a crankcase (210) having a first orifice (212) and a second orifice (214), a primary hydraulic machine (230) received in the crankcase (210), and a pressure booster (300) integrated into the crankcase (210), said pressure booster (300) being suitable for selectively boosting the pressure in such a way that the difference in pressure between two orifices (232, 234) in the primary hydraulic machine (230) is greater than the difference in pressure between the two orifices (212, 214) in the crankcase (210).
F15B 7/00 - Fluid-pressure actuator systems in which the movement produced is definitely related to the output of a volumetric pumpTelemotors
F15B 11/032 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the actuating force by means of fluid-pressure converters
Disclosed is a hydraulic machine (2) comprising: - a bearing support member (8), - a cylinder block (16), - a brake piston (20) that is movably mounted with respect to the bearing support member between a braking position in which the piston is shape-matchingly engaged with the cylinder block in such a way as to prevent the cylinder block from rotating with respect to the piston and a brake-release position in which the piston lets the cylinder block rotate freely with respect to the piston, and - at least one bearing (14) supported by the bearing support member (8), the piston and the bearing being on the same side of the cylinder block with reference to the direction of a main axis (X-X) of the machine, a perimeter (59) of the piston (20), oriented in the opposite direction to the axis, being configured so as to prevent the piston from rotating with respect to the bearing support member.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/0472 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with cam-actuated distribution members
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
Disclosed is a rotating machine (6) comprising: - a casing (8); and - at least one gauge (16) that is attached directly to the casing and arranged to detect a load applied to the casing at a distance from the gauge and/or a variation in a shape of the casing.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
Disclosed is a hydraulic machine (1) comprising: - a cam (14) having a cylindrical outer face (30) and a main axis (X-X), and - at least one gauge (40) rigidly fixed to the face and arranged to detect stress on the face and/or a variation in a shape of the face.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/0472 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with cam-actuated distribution members
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
The invention relates to a hydraulic machine (1) comprising a first assembly and a second assembly which are rotatably movable relative to one another about a main axis (Z-Z), the first assembly comprising a shaft (20), a cylinder block (30) and a plurality of pistons (40) that are mounted so as to slide inside cavities (32) in the cylinder block (30), and the second assembly comprising a casing and a multilobed cam (50), the hydraulic machine (1) being configured so that the flow rate of fluid displaced by the pistons (40) is constant when the relative rotation speed between the first and second assemblies is constant.
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F16H 1/28 - Toothed gearings for conveying rotary motion with gears having orbital motion
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
The invention relates to an assembly comprising a hydraulic pump (100) and an epicyclic reduction gearset (200), wherein the hydraulic pump (100) is a radial piston hydraulic pump, the reduction gearset (200) comprising an outer sun gear (210), an inner sun gear (220), a planet carrier (230) and a planet gear (240); characterised in that, with the reduction gearset (200) being housed in the internal space in the casing (110) of the hydraulic pump (100), the outer sun gear (210) of the reduction gearset (200) is rigidly connected to the casing (110) of the hydraulic pump (100), the inner sun gear (220) is rigidly connected to the shaft (120) of the hydraulic pump (100), and the planet carrier (230) is rigidly connected to the cylinder block (130) of the hydraulic pump (100) in such a way that the reduction gearset (200) applies a reducing ratio between the shaft (120) and the cylinder block (130) of the hydraulic pump (100).
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F16H 1/28 - Toothed gearings for conveying rotary motion with gears having orbital motion
B60K 17/00 - Arrangement or mounting of transmissions in vehicles
The invention relates to a compactor comprising: a roller (125, 135) driven to move by a drive system (100), a vibrating element (225, 235) comprising an off-centre mass relative to the roller designed to generate vibrations in the roller and an electric motor suitable for driving the vibrating element (225, 235), wherein a controller (400) is configured to selectively control the electric motor such that the vibrating element (225, 235) is driven in the same direction of rotation as the roller (125, 135).
Disclosed is a system for driving a compactor, comprising a variable displacement primary pump (110), a variable displacement secondary pump (210), an electric motor (M) adapted to jointly rotate the primary pump (110) and the secondary pump (210), and a controller (20) adapted to control the primary motor (M) such that the primary motor provides sufficient torque to drive the primary pump (110) and the secondary pump (210).
B06B 1/18 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
E01C 19/28 - Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
30.
HYDRAULIC MACHINE PROVIDED WITH A DIRECTION CHANGING DRAWER
The invention relates to a hydraulic machine (100) comprising: - a distribution cover (2.3); - a distributor (16); - a displacement selection drawer (35) mounted so as to slide between a first position in which the machine is configured to operate with a first displacement and a second position in which the machine is configured to operate with a second displacement different from the first displacement; and - a direction changing drawer (26) mounted so as to slide between a first position in which the machine is configured to exert a torque in a first direction about an axis of rotation (10) and a second position in which the machine is configured to exert a torque in a second direction, the direction changing drawer (26) being mounted so as to slide along an axis (42) at a distance from the axis of rotation (10), the direction changing drawer extending: - in a wall of the distributor (16); or - in a wall of the distribution cover and outside the displacement selection drawer (35).
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/0472 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders with cam-actuated distribution members
F04B 1/063 - Control by using a valve in a system with several pumping chambers wherein the flow-path through the chambers can be changed, e.g. between series and parallel flow
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
31.
IMPROVED HYDRAULIC SYSTEM FOR VIBRATION GENERATION
Disclosed is a hydraulic circuit for generating vibrations within a compactor, comprising: - a hydraulic pump (210); - an electric motor (M2); - at least one hydraulic motor (220, 230) adapted to rotate a vibrating element (225, 235); - a preloaded discharge member (254), characterized in that: - the hydraulic circuit (200) is a closed-loop hydraulic circuit; - the hydraulic pump (210) has a fixed swept volume; - the hydraulic circuit (200) comprises a controller (400) adapted to drive the electric motor (M2) in such a way that the pressure within the hydraulic circuit (200) remains lower than the preloading pressure of the preloaded discharge member (254).
B06B 1/16 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
E01C 19/28 - Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
B06B 1/18 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency wherein the vibrator is actuated by pressure fluid
32.
METHOD FOR CONTROLLING A SET OF HYDRAULIC MOTORS FOR DRIVING A DRILL HEAD
Each motor (8) comprises a cylinder block (13) distinct from the cylinder blocks of the other motors. In the method: the head (2) is driven at a setpoint speed by means only of a first subset (M1, M4, M7) of motors from the set, and subsequently the head is driven at a setpoint speed by means only of a second subset (M2, M5, M8) of motors from the set, the second subset being different from the first subset.
E21D 3/00 - Raising shafts, i.e. working upwards from the bottom
E21D 9/087 - Making by using a driving shield with additional boring or cutting means with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
E21D 1/06 - Sinking shafts mechanically with shaft-boring cutters
A brake valve (1) comprising a main body (10), a shaft (20) movable within the main body (10), a spool plate (60), a first spring (40) and a second spring (50) arranged within the main body (10), wherein the spool plate (60) is movable between a release configuration and a brake configuration wherein the shaft (20) is adapted to be linked with a first actuator (70) configured to slide the shaft (20), the brake valve (1) comprises a command fluid port (90) connected to a brake chamber (92), a valve ring (95) which defines the brake chamber (92) with the main body (10) and the shaft (20), said valve ring (95) being configured to, when a pilot pressure is applied in the brake chamber (92), move the shaft (20) towards the actuated position or push the second spring (50) so as to move the spool plate (60) towards the brake configuration.
A hydraulic machine has a first assembly and a second assembly movable in rotation relative to each other about an axis of rotation. The first assembly and the second assembly define an internal volume and are in contact along an interface. The interface between the first assembly and the second assembly is provided with a sealing element positioned in a housing connected to the internal volume via a first duct, and to the surrounding environment via a second duct. The first duct is provided with a sealing element adapted to isolate the housing from the internal volume, where a secondary cavity is formed in the first assembly or in the second assembly. The secondary cavity is connected to the housing and isolated from the internal volume.
Drive system for a vehicle propulsion component, characterized in that it comprises: - a variable-displacement hydraulic pump (30), - a hydraulic motor (40), designed to drive the rotation of said propulsion component, - an electric motor (10), designed to drive the hydraulic pump (30), - an electrical-power source (12), a controller (20) configured to control the displacement of the hydraulic pump (30) and the rotational speed of the electric motor (10) as a function of a setpoint value so as to achieve the setpoint value while keeping a rotational speed (Vm) of the electric motor (10) above a lower threshold value (Vmin).
The invention relates to a method for starting up a drive system for a vehicle propulsion member, said drive system comprising a hydraulic pump (30), a hydraulic motor (40) powered by the hydraulic pump (30) via a closed-loop hydraulic circuit, and an electric motor (10), said start-up method comprising the following steps, considering a stopped configuration of the drive system, in which the electric motor, the hydraulic pump and the booster pump (35) are stopped and the hydraulic motor is disengaged: starting up the booster pump; powering up the electric motor; turning on the hydraulic pump; adjusting the displacement of the hydraulic pump and/or the speed of the electric motor to provide a flow rate corresponding to a setpoint of the hydraulic motor; and starting up the hydraulic motor.
Disclosed is an assembly comprising: - a vehicle comprising a primary hydraulic circuit (100), comprising a load-sensing hydraulic pump (110), an auxiliary hydraulic circuit (130) fed by the hydraulic pump (110) and a hydraulic connector (140) fed by the hydraulic pump (110); - a coupling unit comprising a secondary hydraulic circuit (200) suitable for being connected to the hydraulic connector (140), the secondary hydraulic circuit (200) comprising hydraulic members (220) that are suitable for being fed via the hydraulic connector (140); characterised in that the secondary hydraulic circuit (200) comprises a sequence valve (250) positioned upstream of the hydraulic members (220), the sequence valve (250) being configured so as to be open when the pressure to the hydraulic connector (140) is higher than or equal to a threshold value and closed when the pressure to the hydraulic connector (140) is lower than the threshold value.
F15B 11/024 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member by means of differential connection of the servomotor lines, e.g. regenerative circuits
A01B 63/32 - Tools or tool-holders adjustable relatively to the frame operated by hydraulic or pneumatic means
F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
A hydraulic machine has a first assembly and a second assembly movable in rotation relative to each other along an axis of rotation. The hydraulic machine has a crankcase defining an internal volume, in which an interface between the fixed assembly and the movable assembly has a housing provided with a first sealing element ensuring the sealing of the internal volume relative to the external environment. A second sealing element is positioned between the internal volume and the housing. The second sealing element is adapted to allow a passage of fluid from the internal volume to the housing when the pressure deviation between the internal volume and the housing is less than or equal to a threshold value, and to isolate the housing from the internal volume when the pressure deviation is greater than the threshold value.
The rotating hydraulic machine (102) comprises: —a housing (10), —a shaft (20) movably mounted relative to the housing about an axis, —an apron (24) rigidly connected to the shaft and extending around at least a portion of the housing, —a cam (12) rigidly connected to either the housing or the shaft, —a cylinder block (42) rotationally connected to the other of either the housing or the shaft, the cylinder block comprising pistons capable of engaging with the cam to produce a relative rotation between the shaft and the housing, —first and second guide bearings (28) each bearing directly on the housing and the apron, and —at least a third guide bearing (37) bearing directly on the housing and the cylinder block.
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
The hydraulic machine comprises: —a fixed part, —a part mounted so as to rotate about an axis (O-O) with respect to the fixed part, —a stack (50) of discs (53, 54) forming a brake or clutch, the discs being able to be in abutment against one another by way of friction surfaces (88) having a mean friction radius (Rf) with respect to the axis, —a push rod (80) that is able to push the discs into abutment against one another, in a direction parallel to the axis, over a thrust surface (4), the thrust surface having a mean thrust radius (Rp) with respect to the axis which extends to within or beyond the mean friction radius (Rf). The push rod (80) has a radial annular notch (90) indenting the push rod from an opposite side of the push rod from the axis (O-O) when the mean thrust radius (Rp) extends beyond the mean friction radius (Rf), and otherwise from the side of the push rod closest to the axis.
F16D 55/40 - Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or on the brake
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
B60T 13/22 - Brakes applied by springs or weights and released hydraulically
A casing for a rotating machine includes a first fixed segment, and a second segment rotating along an axis of rotation (X-X). The first segment and the second segment are in contact along an interface provided with a sealing element. The sealing element is positioned in a housing connected to the internal volume of the casing, and also to the surrounding medium. The connection between the housing and the surrounding medium is made via a duct. The first casing segment or the second casing segment has a planer positioned at an outer end of the duct.
F16J 15/34 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
B62D 55/088 - Endless-track unitsParts thereof with means to exclude or remove foreign matter e.g. sealing means, self-cleaning track links or sprockets, deflector plates or scrapers
42.
DEVICE AND METHOD FOR CONTROLLING THE TRACTION OF A HYDRAULIC ASSISTANCE CIRCUIT
A method for controlling the traction of a vehicle hydraulic assistance circuit, wherein a target pressure (C) is applied, and a setpoint pressure (Pc) and a theoretical value (Vth) of a parameter are determined, a pressure setpoint (Pls) is applied to the hydraulic pump (10) which is equal to the setpoint pressure (Pc), an actual value (Ve) in the hydraulic assistance circuit is measured, the actual value (Ve) measured in the hydraulic assistance circuit is compared with the theoretical value (Vth), and, if the difference between the actual value (Ve) and the theoretical value (Vth) is greater than a threshold value, a step (E5) of adjusting the setpoint is carried out, wherein the pressure setpoint (Pls) of the hydraulic pump (10) is modified so that it is equal to an actual pressure (Pe) to within an adjustment coefficient.
A vehicle drive assistance system equipped with an open hydraulic circuit has a hydraulic pump, a hydraulic motor and a reservoir. The system has a three-position valve suitable for: in a first position, supplying the hydraulic motor in a first direction of operation; in a second position, fluidly isolating the hydraulic motor from the hydraulic pump and connecting the hydraulic motor to the reservoir; and in a third position, supplying the hydraulic motor in a second direction of operation. A flow controller is positioned between the hydraulic pump and the three-position valve. The flow controller is configured in such a way as to selectively allow or not allow the passage of fluid through the supply duct of the hydraulic pump toward the three-position valve.
Disclosed is a hydraulic machine (100) comprising an improved flushing circuit for causing a primary flushing flow (F1) to circulate from an inlet (210) successively into a proximal portion (110), a mid portion (120) and a distal portion (130) of the hydraulic machine (100), then into the mid portion (120) and the proximal portion (110) as far as an outlet (220).
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F04B 1/0443 - Draining of the housingArrangements for handling leaked fluids
Disclosed is a system (1) for rotating a member (2), the system comprising a hydraulic circuit connecting a pressure source (10) to a hydraulic motor (20), a proportional valve (40) for connecting the pressure source (10) to the hydraulic motor (20), and a rotation valve (100), configured so as to offload fluid into the hydraulic circuit according to an applied setpoint.
The invention relates to a hydraulic system comprising a first group of motors (M1) which includes at least one hydraulic motor (M11), a second group of motors (M2) which includes at least one hydraulic motor (M21), and a supply group (10) which is designed to deliver a pressure and to supply the first group of motors (M1) and the second group of motors (M2) in parallel so as to define a supply and a discharge of fluid for each of said first group of motors (M1) and second group of motors (M2), said system comprising a control block (100) which is designed to form a variable restriction on the intake of one of said first group of motors (M1) and second group of motors (M2) and a variable restriction on the discharge of the other of said first group of motors (M1) and second group of motors (M2).
A system (1) comprising a primary machine (10), a hydraulic machine (20) and a variable frequency drive (30) which are disposed in an assembly housing (40), the system (1) being characterized in that it comprises a cooling circuit (50) designed such that a single cooling fluid passes through a plurality of ducts designed for cooling the primary machine (10), the variable frequency drive (30) and the hydraulic machine (20).
F04B 1/12 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
F04B 17/03 - Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
H02K 7/14 - Structural association with mechanical loads, e.g. with hand-held machine tools or fans
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
H02K 11/33 - Drive circuits, e.g. power electronics
A hydraulic piston machine including a housing, a shaft that is able to rotate relative to the housing, and a cam secured to one of the housing or the shaft. A cylinder block includes pistons that are able to move in the cylinder block opposite the cam in order to generate relative rotation between the cylinder block and the cam. The cylinder block is linked in rotation to the other of the shaft or the housing. A mechanism forms rotation guide bearings for guiding the rotation of the shaft relative to the housing, which mechanism includes a tapered plain bushing interposed between a housing element and an element linked in rotation with the shaft and in which the tapered plain bushing includes a radial through-slit extending through the entire radial dimension of the bushing.
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F16C 17/10 - Sliding-contact bearings for exclusively rotary movement for both radial and axial load
Disclosed is a hydraulic assistance system (1) comprising a hydraulic pump (12) connected to a hydraulic motor (20) by a valve unit (50), the system (1) further comprising a booster pump (40) suitable for drawing fluid from a reservoir (R) and for delivering a booster pressure in the hydraulic circuit and selectively applying a pressure in a casing of the hydraulic motor (20), said system (1) being characterised in that the valve unit (50) is suitable for selectively isolating the hydraulic pump (12) from the hydraulic motor (20).
Auxiliary hydraulic circuit (1) comprising a hydraulic pump (12) which is connected to a hydraulic motor (20) by a hydraulic circuit, the system (1) further comprising a booster pump (40) suitable for removing a fluid from a tank (R) and for supplying a booster pressure to the hydraulic circuit, the system (1) being characterised in that it further comprises a control device (80, 90, 160, 170) suitable for selectively connecting the booster pump (40) to the tank (R) so that the flow supplied by the booster pump is at least partially discharged into the tank (R).
The rotating hydraulic machine (102) comprises: - a housing (10), - a shaft (20) movably mounted relative to the housing about an axis, - an apron (24) rigidly connected to the shaft and extending around at least a portion of the housing, - a cam (12) rigidly connected to either the housing or the shaft, - a cylinder block (42) rotationally connected to the other of either the housing or the shaft, the cylinder block comprising pistons capable of engaging with the cam to produce a relative rotation between the shaft and the housing, - first and second guide bearings (28) each bearing directly on the housing and the apron, and - at least a third guide bearing (37) bearing directly on the housing and the cylinder block.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F04B 1/107 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
Disclosed is a hydraulic machine (1) comprising a first assembly (10) and a second assembly (20) capable of rotating relative to one another about an axis of rotation (X-X), said hydraulic machine (1) comprising a casing defining an internal volume (2), wherein an interface between the stationary assembly and the movable assembly comprises a recess (4) having a first sealing element (40) for sealing the internal volume (2) relative to the external environment, characterised in that a second sealing element (6) is positioned between the internal volume (2) and the recess (4), said second sealing element (6) enabling passage of fluid from the internal volume (2) to the recess (4) when the pressure differential between the internal volume (2) and the recess (4) is less than or equal to a threshold value, and isolating the recess (4) from the internal volume (2) when said pressure differential is greater than said threshold value.
Disclosed is a hydraulic machine (1) comprising a first assembly (10) and a second assembly (20) movable in rotation relative to one another about an axis of rotation (X-X), wherein the first assembly (10) and the second assembly (20) define an internal volume (2) and are in contact at an interface, the interface between the first assembly (10) and the second assembly (20) being provided with a sealing element (40) positioned in a recess (30) connected, on the one hand, to the internal volume (2) via a first duct and, on the other hand, to the ambient environment via a second duct (5), the first duct being provided with a sealing element (6) for isolating the recess (4) from the internal volume (2), and characterised in that a secondary cavity (7) is formed in the first assembly (10) or in the second assembly (20), said secondary cavity (7) being connected to the recess (4) and isolated from the internal volume (2).
and a pivoting element adapted to be mounted on an axle, and movable in rotation relative to the hydraulic device around a first axis of rotation.
Views along a plane defined by the second axis of rotation and the first axis of rotation, the proximal rolling-element bearing and the distal rolling-element bearing are positioned on either side of the first axis of rotation, in that the cylinder block is positioned between the first axis of rotation and the proximal rolling-element bearing.
The hydraulic machine comprises: - a fixed part, - a part mounted so as to rotate about an axis (O-O) with respect to the fixed part, - a stack (50) of discs (53, 54) forming a brake or clutch, the discs being able to be in abutment against one another by way of friction surfaces (88) having a mean friction radius (Rf) with respect to the axis, - a push rod (80) that is able to push the discs into abutment against one another, in a direction parallel to the axis, over a thrust surface (4), the thrust surface having a mean thrust radius (Rp) with respect to the axis which extends to within or beyond the mean friction radius (Rf). The push rod (80) has a radial annular notch (90) indenting the push rod from an opposite side of the push rod from the axis (O-O) when the mean thrust radius (Rp) extends beyond the mean friction radius (Rf), and otherwise from the side of the push rod closest to the axis. Figure for the abstract: Figure 4
F16D 55/40 - Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or on the brake
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
B60T 13/22 - Brakes applied by springs or weights and released hydraulically
F16D 59/02 - Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
A hydraulic transmission system comprising a first hydraulic device (10) designed to be driven to rotate by a primary motor (12), a second hydraulic device (20) designed to drive a vehicle component (22) to rotate, the first hydraulic device (10) and the second hydraulic device (20) defining a hydraulic circuit (30) comprising a supply line (32) and a return line (34), the system being characterized in that it comprises a return valve (60) positioned on the return line (34), the return valve (60) being configured so as to define a variable restriction in the return line (34), the return valve (60) being controlled by a control (64) and being configured to selectively form a restriction on the return line (34).
B60T 10/04 - Control or regulation for continuous braking making use of fluid or powdered medium, e.g. for use when descending a long slope with hydrostatic brake
B60K 17/356 - Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
A casing (1) for a rotating machine, comprising a first segment (12) which is fixed and a second segment (14) which rotates about an axis of rotation (X-X), the first segment (12) and the second segment (14) being in contact along an interface provided with a sealing element (40), said sealing element (40) being positioned in a housing (30) connected to the internal volume of the casing on one hand and to the ambient environment on the other hand, the connection between the housing (30) and the ambient environment being produced via a conduit (50), characterized in that the first casing segment (12) or the second casing segment (14) comprises a planing portion (60) positioned at an outer end of the conduit (50).
B62D 55/088 - Endless-track unitsParts thereof with means to exclude or remove foreign matter e.g. sealing means, self-cleaning track links or sprockets, deflector plates or scrapers
58.
Method and system of hydraulic braking for vehicle with coupling
A method for driving a braking circuit for a vehicle equipped with a coupling is disclosed.
The vehicle includes a hydraulic supply circuit and a hydraulic control circuit equipped with a driving device.
the driving device increases the pressure of the hydraulic accumulator via the hydraulic control circuit.
B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
B60T 8/32 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
59.
Emergency hydraulic braking method and circuit for coupling
The assembly may include a cylinder block, a plurality of pistons, and a holding element, the holding element extending over all or part of the outer periphery of the cylinder block. The holding element may include a plurality of guide portions, each partially blocking a recess of the cylinder block so as to come into contact with a planar end of the crown of a piston to guide in the translation of each piston in their respective recesses. The holding element may include two indexing means cooperating with two indexing means of the cylinder block so as to hold the holding element under a traction force when positioned around the cylinder block.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
Drive assistance system for a vehicle provided with an open hydraulic circuit comprising a hydraulic pump (10), a hydraulic motor (20) and a reservoir (R), said system comprising a three-way valve (30) which is designed such that, in a first position, it supplies the hydraulic motor (20) in a first direction of operation, in a second position, it fluidically isolates the hydraulic motor (20) from the hydraulic pump (10) and connects the hydraulic motor (20) to the reservoir (R), and, in a third position, it supplies the hydraulic motor (20) in a second direction of operation, a flow rate adjuster (40) positioned between the hydraulic pump (10) and the three-way valve (30), said flow rate adjuster (40) being configured so as to selectively permit or prevent passage of fluid in the supply duct from the hydraulic pump (10) to the three-way valve (30).
The invention relates to a hydraulic machine (1) such as a variable displacement axial piston pump or motor, comprising - a variable inclination plate (2), comprising an axis of rotation (YY') linked to axial pistons (3), each having a variable stroke, the stroke of the axial pistons (3) depending on the inclination of the variable inclination plate (2), the variable inclination plate (2) comprising a neutral position that corresponds to a zero inclination of the variable inclination plate (2) relative to a longitudinal axis (XX') of the hydraulic machine (1); the hydraulic machine (1) further comprising - a return mechanism (4) comprising a return spring (4) configured to return the variable inclination plate (2) to the neutral position when no inclination is applied to the variable inclination plate (2); characterised in that the hydraulic machine also comprises a locking mechanism (5) comprising a movable stop (51) such that, when the variable inclination plate (2) is returned to the neutral position by means of the return spring (4), the movable stop (51) is configured to lock the variable inclination plate (2) in the neutral position.
F03C 1/06 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinder axes generally coaxial with, or parallel or inclined to, main shaft axis
F04B 1/324 - Control of machines or pumps with rotary cylinder blocks by varying the relative positions of a swash plate and a cylinder block by changing the inclination of the swash plate
63.
HYDRAULIC MACHINE COMPRISING A BRAKE RELEASE MEMBER
The hydraulic machine (2) comprises: - a housing (4), - a shaft, - a cam, - a cylinder and piston block designed to cooperate with the cam, and - a brake (112), the brake comprising: - a stack of discs (20) connected alternately to the housing and to the shaft, - a spring (22), - a pusher (26) loaded by the spring to press the discs together, and - a first wall (132) and a second wall (134) interposed between the spring and the discs with reference to an axial direction (X-X) of the shaft and delimiting a chamber (24) with the pusher such that, when a liquid pressure in the chamber exceeds a predetermined threshold, the pusher moves against the spring. The first wall (132) is interposed between the spring and the second wall with reference to the axial direction and mounted so as to be able to move relative to the housing. The machine comprises a stop (38) limiting the travel of the first wall (132) towards the spring such that the first wall remains at a distance from the spring. The machine is arranged such that the pusher (26) comes to bear against the second wall (134) when the pusher moves against the spring.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F03C 1/24 - Reciprocating-piston liquid engines with movable cylinders in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
A braking device may include a brake casing rotatably assembled with respect to a shaft along an axis of rotation, first braking elements and second braking elements, forming a stack, an elastic return element configured to exert an application force on the first and second braking elements, and a brake release actuator, adapted to bias the elastic return element along a direction opposing the application direction. The braking device a may include a diffusion wedge and a pressure wedge positioned respectively to bear against the stack and against the elastic return element. The diffusion wedge and the pressure wedge may have contact surfaces defining an annular linear contact about the axis of rotation.
F16D 55/38 - Brakes with a plurality of rotating discs all lying side by side mechanically actuated
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
F16D 55/40 - Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or on the brake
F15B 15/00 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
Method for controlling a brake valve (5), in which a control pressure is applied, a proportional solenoid valve (6) is controlled depending on the control pressure so as to provide a first pressure, a second pressure is provided by means of an on/off solenoid valve (7) connected to an electric drive (74), the electric drive (74) not being activated, an actuator (58) of a brake valve (5) is controlled by means of the highest pressure between the first and the second pressure, and in which the control set point value is measured by means of a sensor (135) providing a signal, and in the absence of a signal provided by the sensor, the electric drive (74) of the on/off solenoid valve (7) is disengaged such that the second pressure provided by the on/off solenoid valve (7) is equal to the control pressure.
B60T 8/40 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
B60T 8/172 - Determining control parameters used in the regulation, e.g. by calculations involving measured or detected parameters
B60T 8/88 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
B60T 8/94 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action on a fluid pressure regulator
B60T 8/92 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means automatically taking corrective action
B60T 8/00 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
66.
Hydraulic arrangement for a steered wheel of a vehicle
The arrangement comprises a hydraulic machine with at least two operating cylinders, the hydraulic machine comprising a rotor part configured to be connected to the steered wheel and a stator part having main enclosures open in a receiving interface, and a pivot device that defines a pivot axis of the stator part and has main outer orifices linked to the main enclosures of the hydraulic machine in a connection interface. The arrangement further comprises a pilot line linked to a pilot chamber which has a pilot inlet in the receiving interface and the pilot line is formed in the pivot device and extends between an outer pilot orifice present in this device and a pilot opening located in the connection interface.
F01C 1/04 - Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents of internal-axis type
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
F03C 1/34 - Distribution members specially adapted for multiple-cylinder engines
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F03C 1/053 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders
67.
SYSTEM AND METHOD FOR MEASURING CHEMICALS, ANALYTES AND OTHER FACTORS IN FOOD
A system and method for measuring chemicals, analytes or other factors in food. The present invention relates to invasive transcutaneous measurement and minimally-invasive or non-invasive transdermal measurement of chemicals and analytes related to spoilage and contamination in a consumable host, primarily seafood and meat as well as other perishable foods. The invention also measures and monitors other factors including temperature, humidity, pH, moisture and location.
The invention relates to a method for controlling a hydraulic braking system of a vehicle (V) comprising a control line (200) and an additional line (100), wherein (E1) a brake control (300) is actuated, (E2) the actuation of the brake control (300) is detected, (E3) a time delay is triggered and (E4) a control valve (220) is controlled so as to supply a control pressure (Pc) to the control line (200), (E6) at the end of the time delay, if the measured control pressure (Pc) is below a threshold value, an additional valve (120) and the control valve (220) are controlled in such a way that the pressure supplied to the additional line (100) and the pressure in the control line (200) are zero.
B60T 17/22 - Devices for monitoring or checking brake systemsSignal devices
B60T 13/66 - Electrical control in fluid-pressure brake systems
B60T 13/68 - Electrical control in fluid-pressure brake systems by electrically-controlled valves
B60T 7/20 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger specially adapted for trailers, e.g. in case of uncoupling of trailer
B60T 11/10 - Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
Piston for a hydraulic piston engine, comprising a body having a guiding and sealing surface (13), the body having at the distal end thereof a cradle-shaped recess (15) configured to receive a cylindrical roller (11) having an axis of revolution (B) and two ends (11a), the piston further comprising a retaining member (20) configured to radially retain the roller (11) in the cradle-shaped recess (15), the retaining member (20) comprising a retaining portion (21) which is retained in a housing (14) formed in the guiding and sealing surface (13) for joining the retaining member (20) to the body.
Method for integrating a hydraulic machine in a machine, in which (E1) the gearbox (30), the primary motor (10) and the oil pan (20) are separated, (E2) the bearing surface of the oil pan (20) is machined, (E3) a fastening segment (70) is positioned in bearing contact with the oil pan (20), said segment comprising a primary portion (72) filling the machined volume of the oil pan (20), and a secondary portion (74) projecting from the oil pan (20), (E4) the gearbox (30) is secured to the primary motor (10) and to the oil pan (20), the fastening segment (70) being interposed between the oil pan (20) and the gearbox (30), (E5) a hydraulic machine is positioned with respect to the secondary portion (74), a shaft of the hydraulic machine being centred with respect to a drilling (76) of the secondary portion (74).
B60K 25/06 - Auxiliary drives from the transmission power take-off
B60K 17/08 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of change-speed gearing of mechanical type
B60K 17/16 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing of differential gearing
B60K 17/356 - Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
B60K 5/04 - Arrangement or mounting of internal-combustion or jet-propulsion units with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle
The present invention concerns a hydraulic pressure amplifier device comprising a casing (10) having two chambers (12, 14) of different cross-sections which house a staged piston (20) comprising two piston sections (22, 24) with cross-sections respectively el matching the chambers (12, 14), and means (30) for controlling the movement of the piston (20), characterised by the fact that the control means (30) are formed of an electronic control driven by means for estimating the ends-of-stroke of the piston (20) without an end-of-stroke sensor or mechanical stop.
F04B 9/113 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor
B60T 13/14 - Pressure supply arrangements using accumulators or reservoirs
F04B 1/02 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having two cylinders
F04B 5/02 - Machines or pumps with differential-surface pistons with double-acting pistons
F04B 9/105 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting liquid motor
F04B 49/00 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups
F04B 49/12 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by varying the length of stroke of the working members
F04B 49/22 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by means of valves
F15B 3/00 - Intensifiers or fluid-pressure converters, e.g. pressure exchangersConveying pressure from one fluid system to another, without contact between the fluids
Disclosed is a hydraulic piston machine comprising a housing (100), a shaft (200) that is able to rotate relative to the housing (100), a cam (112) secured to one of the housing (100) or the shaft (200), a cylinder block (334) comprising pistons (336) that are able to move in the cylinder block (334) opposite the cam (112) in order to generate relative rotation between the cylinder block (334) and the cam (112), the cylinder block (334) being linked in rotation to the other of the shaft (200) or the housing (100), means (400) forming rotation guide bearings for guiding the rotation of the shaft (200) relative to the housing (100), in which means (400) forming rotation guide bearings comprise a tapered plain bushing (450) interposed between a housing element (116) and an element (334, 380) linked in rotation with the shaft (222) and in which the tapered plain bushing comprises a radial through-slit extending through the entire radial dimension of the bushing.
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
A method for controlling a transmission device of a vehicle. The device includes a hydraulic transmission. The displacement of the hydraulic pump is controlled so that it delivers to the n hydraulic motors a constant flow that is proportional to the speed of the wheels rotated by the drive. The displacement control of the hydraulic pump is carried out by a correction constant and a correction variable. The correction variable is determined in real time. The correction constant includes the sum of a theoretical constant and an adjusted constant. The theoretical constant is defined according to the theoretical behaviour of the hydraulic transmission. The adjusted constant is defined and corrected when the vehicle is in predetermined conditions of use, in order to reflect the real state of the vehicle.
A method for controlling a vehicle including a main transmission and a hydraulic transmission, in which, in the absence of a setpoint on the brake, and when the hydraulic transmission is activated, a hydraulic pump of the hydraulic transmission is controlled in such a way as to establish a predetermined pressure inside a hydraulic circuit of the hydraulic transmission, and in the event of a setpoint applied to the brake, the hydraulic transmission is then controlled according to an acceleration setpoint applied to the vehicle. If the acceleration setpoint is greater than or equal to an acceleration threshold value, and the speed of travel of the vehicle is less than or equal to a speed threshold value, the hydraulic transmission is controlled in such a way as to apply a tractive force. If the acceleration setpoint is less than the first threshold value, the hydraulic transmission is disengaged.
B60K 23/08 - Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels
B60W 10/04 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
B60W 10/18 - Conjoint control of vehicle sub-units of different type or different function including control of braking systems
The invention relates to a hydraulic device including: a stator and a rotor, in which the rotor can rotate relative to the stator about a first axis of rotation; and a shaft mounted on the rotor such as to rotate therewith. The shaft has a wheel carrier provided at a proximal end thereof and designed to receive a rim and a tire. The shaft includes a through-channel extending from the proximal end to an opposing distal end. The hydraulic device includes an air chamber formed at the distal end of the shaft and connected to the through-channel. The through-channel and air chamber are produced such as to allow a flow of air in order to control the pressure of a tire.
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
B60C 23/00 - Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehiclesArrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanksTyre cooling arrangements
76.
CYLINDER CAPACITY MANAGEMENT SYSTEM FOR A LOPPING HEAD
The present invention relates to a system for driving a movable element, comprising at least one drive device (A, B) comprising: - a main motor (M11, M12) configured to be connected to the first supply line (10); - a multi-cylinder capacity secondary motor (M21, M22) configured to be connected to the second supply line (12) and comprising two half-motors (V1, V2) corresponding to two cylinder capacity levels (V1, V1+V2), wherein the first half-motor (V1) is coupled in series with the main motor (M11, M12) via a series line (L10A, L10B); - a vacuum valve (20A, 20B) controlled using a control line (25A, 25B) and configured to activate or deactivate the second half-motor (V2); - an additional supply line (L11A, L11B) configured to be connected to the first supply line (10) and connected to the second half-motor (V2), wherein the vacuum valve (20A, 20B, 20) is also controlled using a feedback control opposing the control by the control line (25A, 25B), said feedback control being implemented by a feedback control line (27A, 27B, 27) drawing from the additional supply line (L11, L11B, L11).
F16H 61/4183 - Preventing or reducing vibrations or noise, e.g. avoiding cavitations
F15B 11/22 - Synchronisation of the movement of two or more servomotors
F16H 61/444 - Control of exclusively fluid gearing hydrostatic with more than one pump or motor unit in operation by changing the number of pump or motor units in operation
F16H 61/448 - Control circuits for tandem pumps or motors
F16H 61/456 - Control of the balance of torque or speed between pumps or motors
77.
MACHINE HAVING A TURRET EXHIBITING AN IMPROVED SYSTEM FOR SETTING THE TURRET IN ROTATION
Machine comprising a chassis (1C) and a turret (1T) that is rotatable about a turret axis (Z-Z) with respect to the chassis (1C), said machine comprising a hydraulic motor (30) designed to drive the turret (1T) in rotation with respect to the chassis (1C), wherein the rotation of the turret (1T) with respect to the chassis (1C) is realized by a slewing ring (20) comprising an internal ring (22) and an external ring (21) that are rotatable with respect to one another about the turret axis (Z-Z), the internal ring (22) being secured to one of the chassis (1C) and the turret (1T), and the external ring (21) being secured to the other of the chassis (1C) and the turret (1T), the motor axis and the turret axis (Z-Z) being coincident.
F16C 19/16 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with a single row of balls
F16C 19/06 - Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row of balls
Assembly comprising a hydraulic apparatus (3) along a second axis of rotation (Z-Z) by means of a proximal bearing (5A) and a distal bearing (5B), the hydraulic apparatus (3) comprising a shaft (4), a multilobe cam (34), a cylinder block (32) and a distributor (31), a pivot element (2) intended to be mounted on an axle (1) and able to rotate with respect to the hydraulic apparatus (3) about a first axis of rotation (X-X), characterized in that, as viewed in a plane defined by the second axis of rotation (Z-Z) and the first axis of rotation (X-X), the proximal bearing (5A) and the distal bearing (5B) are positioned on either side of the first axis of rotation (X-X), and in that the cylinder block (32) is positioned between the first axis of rotation (X-X) and the proximal bearing.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
79.
Steering pivot pin forming an internal pneumatic passage
The invention relates to an assembly including a hydraulic apparatus having a rotor and a stator. The rotor is mounted so as to turn about a second rotation axis with respect to the stator and is secured to a device suitable for mounting a vehicle wheel. A pivot-pin element is intended to be mounted on an axle and is mounted so as to rotate about a first rotation axis with respect to the hydraulic apparatus. The stator is mounted so as to turn about the first rotation axis with respect to the axle. An air chamber is formed between the pivot-pin element and the hydraulic apparatus, the air chamber is connected to a distribution passage formed in the hydraulic apparatus. An axle passage is formed in the pivot-pin element so as to form a pneumatic passage between the pivot-pin element and the hydraulic apparatus.
B60C 23/00 - Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehiclesArrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanksTyre cooling arrangements
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
F04D 25/06 - Units comprising pumps and their driving means the pump being electrically driven
80.
System for assisting the driving of a vehicle comprising an open hydraulic circuit
The present invention relates to a system for assisting the driving of a vehicle comprising at least one hydraulic machine forming a pump (19), at least one hydraulic machine forming an engine (130, 140) and an open hydraulic circuit (100) extending through a tank (13) and comprising a suction duct (11) extending from the tank (13) to an inlet of the pump (19), a supply duct (15) extending from the outlet of the pump (19) to the inlet of the engine (130, 140) and a return duct (122) extending from the outlet of the engines (130, 140) to the tank (13), characterised in that at least one of the engines (130, 140) is an engine that can disengage the clutch, and in that the system comprises an element forming a restriction (180) and creating a loss of charge over the return duct and a means (190, 192) adapted for connecting to the engine casing, the part of the return duct (122) located upstream of the element forming a restriction (180) and for applying to the engine casing, from the return duct (122), a pressure lower than the pressure of this return duct.
The present invention relates to a hydraulic machine comprising a cylinder block (30) comprising cylinders (32) housing pistons (50), a directional-control valve (60) comprising ports (61, 64) which communicate with the cylinders (32) and comprising two concentric complementary elements (62, 66) capable of relative axial sliding, and sealing means (70, 72, 74; 100) arranged between the two concentric complementary elements (62, 66), in which the sealing means (70, 72, 74) comprise at least two continuous annular seals each comprising a base and at least one lip-shaped fin, and which are suited to resting elastically against a respective surface of the complementary directional-control-valve elements (66, 62) positioned opposite them and provide sealing at this point, the annular seals being made from a material which elastically centres and supports the radially inner element inside the outer element of the directional control valve in order to avoid direct mechanical contact between these two elements.
F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F03C 1/34 - Distribution members specially adapted for multiple-cylinder engines
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
82.
HYDRAULIC ASSISTANCE CIRCUIT COMPRISING IMPROVED FEEDING MEANS
The invention relates to a hydraulic transmission comprising: - a hydraulic pump (20) connected to at least one hydraulic motor (40) via a hydraulic assistance circuit; - a primary motor (M) associated with a clutch (16) so as to rotate the hydraulic pump (20) via the clutch (16) when the clutch (16) is engaged, and so as to uncouple the hydraulic pump (20) from the primary motor (M) when the clutch (16) is disengaged, the hydraulic transmission being characterised in that it comprises a feeding assistance pump (30), configured to be rotated by the primary motor (M) when the clutch (16) is engaged, and to be uncoupled from the primary motor (M) when the clutch (16) is disengaged.
The invention relates to a method for controlling a parking brake of a vehicle (V), wherein: - for a set point between 0 and C1, the control pressure (200) is zero, and the additional pressure (100) is constant and not zero; - for a set point between C1 and C3, the control pressure is proportional to the set point; and - for a set point between C2 and Cmax, the additional pressure is zero; said values being such that 0 < C1 < C2 < Cmax, and 0 < C1 < C3 < Cmax.
Method for controlling a braking circuit for a vehicle (V) equipped with a coupling (A), the vehicle (V) comprising a hydraulic supply circuit (100) and a hydraulic control circuit (200) equipped with a control device (225), the coupling (A) comprising a hydraulic braking circuit (300) connected to the hydraulic supply circuit (100) and to the hydraulic control circuit (200) and comprising a hydraulic accumulator (360) wherein, when - the vehicle (V) is at rest, and - the pressure within the hydraulic accumulator (360) is less than or equal to a threshold pressure value, the control device (225) produces an increase in pressure of the hydraulic accumulator (360) via the hydraulic control circuit (200).
B60T 7/20 - Brake-action initiating means for automatic initiationBrake-action initiating means for initiation not subject to will of driver or passenger specially adapted for trailers, e.g. in case of uncoupling of trailer
The invention relates to an assembly comprising: a cylinder block (10), a plurality of pistons (20), and a holding element (30) extending over all or part of the outer periphery of the cylinder block (10); the holding element (30) comprising a plurality of guide portions (36) each partially blocking a recess (12) of the cylinder block (10), so as to engage with a planar end (26) of the crown (24) of a piston (20) so as to guide the translation of each of the pistons (20) in its respective recess (12). The holding element (30) comprises two indexing means (36) engaging with two indexing means (16) of the cylinder block (10) so as to hold the holding element (30) under a traction force when positioned around the cylinder block (10).
F04B 1/04 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
F04B 1/107 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders
F03C 1/24 - Reciprocating-piston liquid engines with movable cylinders in which the liquid exclusively displaces one or more pistons reciprocating in rotary cylinders
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
86.
PROGRESSIVE ENGAGEMENT AND DISENGAGEMENT OF A CLUTCH DEVICE FOR A VEHICLE
The invention relates to a method for progressively engaging a clutch device (2) for a vehicle, comprising an actuator (20) which comprises a chamber (200), the method comprising the steps of: - supplying the chamber (200) at a first pressure, - supplying the chamber (200) at a second pressure which is lower than the first pressure, and - supplying the chamber (200) at a third pressure which is higher than the second pressure.
The invention relates to a braking device comprising: a brake housing (2) which is mounted such that it can rotate in relation to a shaft (1) about an axis of rotation (X-X); first braking elements (41) and second braking elements (42) forming a stack (4); an elastic restoring element (5) configured in such a way as to exert an application force on the first and second braking elements (41, 42); and a brake release actuator (73) designed to actuate the elastic restoring element (5) in a direction that is antagonistic to the direction of application, the braking device comprising a distribution wedge (8) and a pressure wedge (9) which are respectively positioned against the stack (4) and against the elastic restoring element (5), the distribution wedge (8) and the pressure wedge (9) having contact surfaces (88, 98) defining an annular linear contact around the axis of rotation (X-X).
F16D 55/36 - Brakes with a plurality of rotating discs all lying side by side
F16D 59/02 - Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means
F16D 65/18 - Actuating mechanisms for brakesMeans for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together
The invention concerns a hydraulic transmission system (2), said system (2) comprising: a hydraulic machine (201), a hydraulic circuit (21) linked to said hydraulic machine (201), and comprising a high-pressure line (211), a booster pump (23) configured to charge the hydraulic circuit (21), an engagement assembly (1) comprising: o a clutch device (3) configured to provide coupling between the hydraulic machine (201) and a drive element (4) or an element to be driven, o a first hydraulic clutch control (31) configured to be linked to the booster pump (23), and o a second hydraulic clutch control (32) configured to be linked to the high-pressure line (211).
The invention relates to an arrangement comprising: a hydraulic machine (1) with at least two operating cylinders, said machine comprising a rotor part (10) configured to be connected to the steered wheel, and a stator part (4A, 4B, 4C, 20) having main enclosures that open onto a receiving interface (IM); and a pivot device (3) defining a pivot axis (P) of the stator and having main external holes (02, 04) that are connected to the main enclosures of the hydraulic machine in a connection interface (IS). The arrangement further comprises a pilot line (60) connected to a pilot chamber (CH) that is equipped with a pilot inlet (EP) in the receiving interface (IM), said pilot line (60) being formed in the pivot device and extending between an external pilot hole (OP) with which the device is equipped and a pilot opening (61) located in the connection interface.
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F03C 1/053 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the inner ends of the cylinders
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
90.
System for assisting the driving of a trailer from an open tipping hydraulic circuit
The present invention concerns a hydraulic system comprising a hydraulic pump (130) installed on a truck tractor (10), a hydraulic pipe (160) connected to the outlet of the pump (130) and a connector (170) positioned at the outlet of the pipe (160) and designed to be connected to a complementary socket (180) provided on a trailer (20) in order to supply a ram (110) positioned on the trailer, for example for tipping purposes, characterised by the fact that it comprises a circuit selector (210) designed to connect said socket (180) selectively either to a ram (110) or a conduit (220) supplying a drive assistance circuit and an assistance circuit return conduit (250) designed to be connected to a tank (120) positioned on the truck tractor.
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
B62D 59/04 - Trailers with driven ground wheels or the like driven from propulsion unit on trailer
F15B 11/16 - Servomotor systems without provision for follow-up action with two or more servomotors
B60K 25/06 - Auxiliary drives from the transmission power take-off
B60K 17/14 - Arrangement or mounting of transmissions in vehicles characterised by arrangement, location or kind of gearing the motor of fluid or electric gearing being disposed in, or adjacent to, traction wheel
B60P 1/16 - Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load supporting or containing element actuated by fluid-operated mechanisms
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
F15B 21/041 - Removal or measurement of solid or liquid contamination, e.g. filtering
91.
Tracker hydraulic assistance device for a slave craft
F16H 61/431 - Pump capacity control by electro-hydraulic control means, e.g. using solenoid valve
B60K 7/00 - Disposition of motor in, or adjacent to, traction wheel
B60K 17/356 - Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
F16H 61/433 - Pump capacity control by fluid pressure control means
92.
DRIVE UNIT FOR ASSISTED DRIVING OF A WHEEL AND VEHICLE EQUIPPED IN THIS MANNER
The invention relates to a drive unit for assisted driving of a wheel, comprising a support (20) which is connected to a chassis or suspension arm (10), a hydraulic motor (30), a wheel support hub (60) which is rotatably mounted, a bearing (70) which guides the hub (60) during rotation, a rotational support bearing (100) for the bearing (70) and a shaft (50) which establishes a rotational driving connection between a rotating element (34) of the motor and the hub (60), characterised in that the support bearing (100) is formed by two portions (110, 150), of which a first portion (110) is attached to the support (20) and forms a fluid-tight portion of the motor casing (30) and a second portion (150) is attached to the first portion (110) and acts as a support for the bearing (70).
The present invention relates to a vehicle comprising a main drive motor (20) coupled to a pair of driven carrying wheels (10, 12) and an assist system comprising a hydraulic motor (62) coupled to some of the carrying wheels (14, 16), a pump-forming hydraulic machine (60) connected to the hydraulic motor (62) and wheel slip and speed sensors (82), a control module (80) which puts the assistance into operation on the basis of the signals from the sensors (82), the control module (80) exploiting software (90) for limiting the power of the main motor (20) and means for controlling this software adjusting the power of the motor while taking account of the engagement or non-engagement of the assist system, and which adjusts the maximum hydraulic pressure in order to avoid a hydraulic overpressure.
B60K 17/356 - Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having fluid or electric motor, for driving one or more wheels
B60K 28/16 - Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to, or preventing, spinning or skidding of wheels
B60W 10/06 - Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
B60W 10/119 - Conjoint control of vehicle sub-units of different type or different function including control of all-wheel-driveline-means, e.g. transfer gears or clutches for dividing torque between front and rear axles
F16H 61/4017 - Control of high pressure, e.g. avoiding excess pressure by a relief valve
B60K 23/08 - Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels
94.
PROCESS AND VALVE FOR INITIATING THE BRAKING OF A VEHICLE AXLE, BRAKING SYSTEM AND VEHICLE EQUIPPED THEREWITH
The invention relates to a valve for initiating the braking of a vehicle axle, in particular a trailer axle, comprising a body (100) with a control inlet (120) connected to a main braking control line, a main supply inlet (130) connected to a pressure source, a secondary inlet (140) connected to a low pressure (R), an outlet (150) connected to the axle brake, a piston (300) defining a set force representing the load on the axle, and a spool (200) translationally movable in a chamber (110) of the body (100) and urged by the pressure applied to the control inlet (120), feedback of the pressure across the outlet (150), and a setting representing the axle load, in such a way that the output pressure is locked to the axle load while being proportional to the pressure at the control inlet (120). The invention also relates to an initiating process, a system comprising the valve and vehicles equipped therewith.
B60T 8/1766 - Proportioning of brake forces according to vehicle axle loads, e.g. front to rear of vehicle
B60T 8/18 - Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
The invention relates to a booster assembly (1) for a hydraulic transmission device, comprising: • a booster pump (2) configured to establish, and maintain, a minimum fluid pressure in a line (3) of the hydraulic transmission device, said booster pump (2) comprising: ○ a delivery orifice (200) connected to said line (3), and ○ an intake orifice (202), and • a first feed line (4) connected at one end to a first hydraulic fluid reservoir (5) and at the other end to the intake orifice (202), characterized in that it also comprises a second feed line (7) connected at one end to the delivery orifice (200) and at the other end to the intake orifice (202).
The present invention concerns a hydraulic pressure amplifier device comprising a casing (10) having two chambers (12, 14) of different cross-sections which house a staged piston (20) comprising two piston sections (22, 24) with cross-sections respectively matching the chambers (12, 14), and means (30) for controlling the movement of the piston (20), characterised by the fact that the control means (30) are formed of an electronic control driven by means for estimating the ends-of-stroke of the piston (20) without an end-of-stroke sensor or mechanical stop.
F15B 3/00 - Intensifiers or fluid-pressure converters, e.g. pressure exchangersConveying pressure from one fluid system to another, without contact between the fluids
F15B 11/032 - Systems essentially incorporating special features for controlling the speed or the actuating force or speed of an output member for controlling the actuating force by means of fluid-pressure converters
97.
VEHICLE COMPRISING A DEVICE FOR STOPPING CONTROL OF THE MAIN ENGINE AND A DRIVING ASSISTANCE DEVICE
The present invention concerns a device for assisting the driving of a vehicle comprising a main motorisation means capable of driving the drive wheels of the vehicle and a hydraulic assistance circuit comprising hydraulic motors associated with at least certain of the load-bearing wheels, a booster pump of the hydraulic assistance circuit and a controlled coupler for starting up the hydraulic motors when an assistance request is made and for deactivating the assistance when a stopping of the main motorisation means is detected, characterised by the fact that it comprises control means capable of imposing, when a temporary stopping of the main motorisation means is detected, a selective state of the hydraulic circuit capable of limiting the reactivation time of the hydraulic assistance circuit.
B60K 6/12 - Prime-movers comprising combustion engines and mechanical or fluid energy storing means by means of a chargeable fluidic accumulator
B60W 50/06 - Improving the dynamic response of the control system, e.g. improving the speed of regulation or avoiding hunting or overshoot
B60K 6/52 - Driving a plurality of drive axles, e.g. four-wheel drive
B60W 10/30 - Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
98.
Hydraulic machine including an improved braking system
A hydraulic machine including: a casing rotatably mounted relative to a shaft; first brake means constrained to rotate with the casing; second brake means constrained to rotate with the shaft, and adapted to co-operate with the first brake means; a braking piston associated with return means and tending to exert a braking force; and a brake-release chamber adapted to be connected to a pressure force so as to apply a brake-release pressure selectively to the braking piston, so as to enable the first and second brake means to be separated; said hydraulic machine including a sweeping channel arranged in the shaft so as to define a leakage flow between the brake-release chamber and an internal volume of the casing.
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F03C 1/04 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement
F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
F16D 55/40 - Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or on the brake
F03C 1/047 - Reciprocating-piston liquid engines with multiple cylinders, characterised by the number or arrangement of cylinders with cylinders in star- or fan-arrangement the pistons co-operating with an actuated element at the outer ends of the cylinders
F04B 1/1071 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement the cylinders being movable, e.g. rotary with actuating or actuated elements at the outer ends of the cylinders with rotary cylinder blocks
F04B 1/0443 - Draining of the housingArrangements for handling leaked fluids
The invention concerns a hydraulic assist system of a vehicle comprising a secondary shaft of a gearbox of the vehicle, a differential comprising a differential case, the differential case comprising primary gear teeth, the primary gear teeth rotating the differential case via the output shaft of the gearbox, an axle, the differential rotating the axle, a hydraulic machine that is offset from the axle, such that the hydraulic machine and the axle are not coaxial, the differential case further comprising additional gear teeth, said additional gear teeth rotating the hydraulic machine.
The invention relates to a self-maintenance method (E) of a hydraulic assistance device (2) of a vehicle, said device (2) comprising: - a hydraulic machine (21, 23), - a reservoir (12), - a filter (101, 103), and - a booster pump (10), the method (E) comprising steps consisting of: - starting up (E1) the hydraulic machine (23) during a determined period, and - deactivating (E2) the hydraulic machine (23) at the end of the start-up step (E1), so as to successively circulate the hydraulic fluid through the filter (101, 103) in two opposite circulation directions, the steps of starting up (E1) and deactivating (E2) being implemented independently of a command to engage and/or disengage the assistance.
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