A valve has a control slide (4) guided in a valve housing (6) so as to be longitudinally movable. The control slide selectively connects a plurality of fluid connection points (P, T, A, B) in the valve housing (6) to each other in a fluid-conducting manner or disconnects the fluid connection points from each other, and can be electrically controlled by a stepper motor (2). The control slide (4) can be actuated by an emergency device (34, 52) in the event of a malfunction or failure.
F16K 31/05 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
The invention relates to a safety controller, which serves the purpose of the quick pressure relief of a hydraulic load, comprising at least one pair of control valves, which can be connected to each other in a fluid-conducting manner, characterized in that each pair of control valves (A1, C2; B1, A2; C1, B2) is arranged between a pressure supply connection (P) and a tank connection (T) in a leakage-free manner, and in that each control valve (A1, C2; B1, A2; C1, B2) can be controlled electrically.
F15B 19/00 - Testing fluid-pressure actuator systems or apparatus, so far as not provided for elsewhere
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
The invention relates to a hydrostatic drive as a whole system, comprising two fluidic displacement units (1, 3), which can be adjusted at least in respect of the volumetric flow and of which one is coupled to an input (9) and the other is coupled to an output (11) and which can be connected to each other in the manner of a closed fluidic circuit, to which a storage circuit (23) is connected, which has at least one storage device (33) and which is divided into a low-pressure side (27) and a high-pressure side (25), and comprising a valve control device (17) for controlling the whole system.
The invention relates to a valve, having a control slide (4) guided in a valve housing (6) so as to be longitudinally movable, which control slide selectively connects a plurality of fluid connection points (P, T, A, B) in the valve housing (6) to each other in a fluid-conducting manner or disconnects said fluid connection points from each other and can be electrically controlled by means of a stepper motor (2). Said valve is characterized in that the control slide (4) can be actuated by means of an emergency device (34, 52) in the event of a malfunction or failure.
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
F16K 31/04 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor
F16K 31/05 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
The invention relates to an agricultural machine for discharging liquid, comprising a boom (10), a frame (11) to which the boom (10) is fixed such that the boom can be rotated about an axis of rotation pointing in the direction of travel, an actuating cylinder (12) for rotating the boom (10) about the axis of rotation, and a measurement and control system for the actuation of the actuating cylinder (12), wherein the actuating cylinder (12) is mechanically connected to the frame (11) on one side, wherein the actuating cylinder (12) is mechanically connected to the boom on the other side for the direct introduction of force, wherein the actuating cylinder (12) is formed as a double-acting actuating cylinder (12) having a piston (13), to which pressure can be applied on both sides in order to move the boom (10) in opposite directions of rotation.
A01M 7/00 - Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
A01C 23/00 - Distributing devices specially adapted for liquid manure or other fertilising liquid, including ammonia, e.g. transport tanks or sprinkling wagons
A valve unit for affecting a media flow between a supply terminal (38), to which a pressure supply source can be connected, and a pressure terminal (40), to which a hydraulic consumer can be connected, comprises a valve device (88) that includes a valve slide (22) which is guided so as to be able to slide longitudinally in a valve housing (18) between final positions (SS). Said valve unit is characterized in that the pressure adjusted by the valve slide (22) at the pressure terminal (40) can be limited by a control device (90) as soon as the valve slide (22) has traveled a predefined sliding distance (V) in the direction of one of the final positions thereof.
The invention relates to an apparatus (10) for blocking and for adjusting a pressure for a hydraulically controllable actuator mechanism (12), in particular in the form of a lifting unit (16) of a machine (18). Said apparatus (10) allows at least one working chamber (20, 22) to be selectively connected to a pressure supply unit (94) comprising a storage device (34) or to a discharge end (66), in particular a reservoir end, by means of a valve unit (38). The apparatus (10) of the invention is characterized in that in a controlling position of the valve unit (38), when the storage pressure in the storage device (34) is greater than the working pressure in the at least one working chamber (20) of the actuator mechanism (12), the storage pressure is relieved in the direction of the discharge end (66) until the working pressure has been reached.
B66C 13/06 - Auxiliary devices for controlling movements of suspended loads, or for preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
F15B 1/02 - Installations or systems with accumulators
A delivery device, with a delivery piston (27) which is movable in a pump chamber (31) by means of an actuation device (3) and which, in one delivery direction, removes fluid from a fluid line (35) in a pressure-reducing manner and, in a further and preferably opposite delivery direction, discharges fluid into a further fluid line (37) in a pressure-increasing manner, is characterized in that a valve device (39, 41) is introduced into the respective fluid line (35, 37), each with an opposite mode of action, in such a way that, in the pressure-reducing removal process, the respective valve device (39, 41) opens in one fluid line (35) and closes in the further fluid line (37) and, in the reverse case, in the pressure-increasing discharging process, the respective valve device (39, 41) closes in one fluid line (35) and opens in the further fluid line (37).
The invention relates to a turbine valve actuator (100) for controlling at least one valve unit of a media-operated consumer unit, such as a steam or gas turbine, having an actuating part drive (102) which has a movable actuating part (104), at least one first media space (106) and at least one second media space (108), wherein a pressure build up in the first media space (106) attempts to cause a movement of the actuating part (104) in a first direction (R) and a pressure build-up in the second media space (108) attempts to cause a movement of the actuating part (104) in an opposing second direction (GR), wherein the first media space (106) can be supplied with a fluid in predeterminable amounts by means of a supply arrangement (110) and the second media space (108) is acted upon by an energy accumulator (112). The invention is characterised in that the energy accumulator is at least one hydraulic accumulator (112) which is provided with a preload pressure and is permanently connected to the second media space (108).
F15B 15/14 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the straight-cylinder type
F15B 1/02 - Installations or systems with accumulators
F15B 1/08 - Accumulators using a gas cushionGas charging devicesIndicators or floats therefor
10.
VALVE, IN PARTICULAR CONTINUOUSLY ADJUSTABLE VALVE
A valve, in particular continuously adjustable valve (15) for regulating a volume flow of flowable media such as hydraulic fluid, having a valve piston (23) which is displaceable in an axial direction in a valve bore (21) of a valve housing (19) and which has at least one control edge for controlling at least one flow path between media ports (A, P, S, T) of the valve housing (19), is characterized in that a travel measurement device (17) is provided which provides a display of the length of travel of displacement movements of the valve piston (23).
F16K 11/07 - Multiple-way valves, e.g. mixing valvesPipe fittings incorporating such valvesArrangement of valves and flow lines specially adapted for mixing fluid with all movable sealing faces moving as one unit comprising only sliding valves with linearly sliding closure members with cylindrical slides
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
11.
ENERGY CONVERTING DEVICE FOR ENERGY SYSTEMS, AND METHOD FOR OPERATING SUCH A DEVICE
The invention relates to an energy converting device for energy systems (2) for converting mechanical energy into hydraulic energy and then into electric energy, said device using a control fluid (3) as the energy transporting medium. The control fluid is subjected to a variably changing pressure by at least one first converting device (5) that converts the mechanical energy into hydraulic energy. The energy converting device comprises at least one second subsequent converting device (7) that converts the hydraulic energy into electric energy. The invention is characterized in that the second converting device (7) is divided into a first control circuit (9) and a second control circuit (11), the two of which can be supplied with the control fluid (3) of variable pressure at the circuit input side (13) by the first converting device (7) and the two of which have predominantly different pressure levels.
F03B 13/00 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates
F03D 9/00 - Adaptations of wind motors for special useCombinations of wind motors with apparatus driven therebyWind motors specially adapted for installation in particular locations
A control means for preventing inadmissibly high tilting moments (MA) in a mobile working machine (7), wherein an evaluation and control apparatus (17) with a computing unit (CPU) is present for evaluating the signals from the respective load sensor (13) and the respective angle sensor (15) and/or for activating the respective actuating device (3), wherein the evaluation and control apparatus (17) is used, at least by way of processing the incoming signals from the load sensor (13) and the angle sensor (15), to determine a maximum possible movement speed (Vmax), for the moving operating arm (5), which prevents the inadmissible tilting moment (MA) in each case, and wherein the respective actuating device (3) activates the operating arm (5) such that the maximum movement speed (Vmax) determined for each displacement position of the operating arm (5) is not exceeded.
A device for compensating for hydraulic effective pressures in a hydraulic accumulator (9) and a hydraulic actuator (5) of a hydraulic system (11, 13) has a valve arrangement (27) for blocking a connection between the hydraulic actuator (5) and hydraulic accumulator (9) and has a control valve device (11) performing a pressure compensation when a predetermined difference in effective pressures is exceeded.
F16D 31/02 - Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
F15B 1/02 - Installations or systems with accumulators
The invention relates to a hydrostatic drive having a closed circulation system (2). The hydrostatic drive comprises an adjustable hydraulic pump (4) driven by an internal combustion engine (3) and a hydraulic motor (5) as well as a first working line (6) and a second working line (7). The first working line (6) and second working line (7) each connect the hydraulic pump (4) and the hydraulic motor (5) to one another. The hydrostatic drive is characterised in that a first hydraulically pilot-controlled valve (8) regulates the fluid flow in the first working line (6), which in a forward driving operation forms the return line for fluid from the hydraulic motor (5) to the hydraulic pump (4), the hydraulic pilot control of the valve (8) is effected by a pressure control valve (9), which detects the fluid pressure in the first working line (6), and depending on the fluid pressure in the first working line (6) and in the second working line (7), and when a pressure set in the pressure control valve (9) exceeds the fluid pressure in the first working line (6), during a braking operation, the valve (8) switches to a position in which the fluid flow is conducted to a further load (10).
A low-pressure supply tank, having a tank housing (1) which forms a closed fluid supply chamber (7) with connections (9 and 11) for fluid inflow and fluid outflow, and with at least one equalizing element (13) which is situated within the supply chamber (7), separates an equalizing gas volume (21) enclosed in it from the supply chamber (7) in a fluid-tight manner and has at least one movable wall part (19) which makes changes in the size of the enclosed gas volume (21) possible to compensate for fluctuations in the fluid volume which is situated in the supply chamber (7).
The invention relates to a lashing platform (1) for inserting and removing retaining hardware for twist-lock containers, having a dead plate (2) for a container (3), the dead plate (2) being supported on a rigid base (5) by hydraulic displacers (4), and having a pressure medium store (6) fluidically connected to the hydraulic displacers (4), characterized in that means (7) are provided for synchronizing the hydraulic displacers (4) under asymmetrical loading of the dead plate (2).
The invention relates to a device for compensating for hydraulic effective pressures in a hydraulic accumulator (9) and a hydraulic actuator (5) of a hydraulic system (11, 13) having a valve arrangement (27) for blocking a connection between the hydraulic actuator (5) and hydraulic accumulator (9) and having a control valve device (11) performing a pressure compensation when a predetermined difference in effective pressures is exceeded.
The hydropneumatic axle suspension for vehicles, especially the front axle thereof, cooperates with at least one suspension cylinder (10) connected to a hydraulic accumulator (26; 24) on both its ring side (14) and the piston side (12). The hydraulic accumulator (26; 24) is triggerable by control electronics (18) with the aid of a valve unit (30; 28) that can be allocated to the hydraulic accumulator (26; 24). The ring side (14) of the suspension cylinder (10) is connected to a pressure value sensor (DA-R) which transmits its measured pressure values to the control electronics (18). The pressure value sensor (DA-R) located on the ring side is connected to the discharge end (38) of the valve unit (30), which can be associated with the ring side (14) of the suspension cylinder (10).
B60G 11/30 - Resilient suspensions characterised by arrangement, location, or kind of springs having fluid springs only, e.g. hydropneumatic springs having pressure fluid accumulator therefor, e.g. accumulator arranged in vehicle frame
19.
ENERGY CONVERTING DEVICE FOR CONVERTING WAVE ENERGY INTO ELECTRIC ENERGY
The invention relates to an energy converting device, particularly for converting mechanical to hydraulic energy, and therefrom into electrical energy, using as an energy transport medium a control fluid guided in two different control circuits having an operative connection to each other by means of a coupling device (32), wherein the one control circuit (28) serves for feeding in energy, particularly in the form of mechanical energy, and the other control circuit serves for discharging energy in the form of converted energy, particularly electrical energy.
F03B 13/18 - Adaptations of machines or engines for special useCombinations of machines or engines with driving or driven apparatusPower stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member and another member wherein the other member is fixed, at least at one point, with respect to the sea bed or shore
The invention relates to a hydraulic steering system for vehicle trailers, having at least one activation cylinder (27) for generating steering forces for a steerable wheel group of the trailer and having at least one control cylinder (7) connected to the activation cylinder (27) via control lines (9, 11) such that an operative connection is formed for steering the wheel group, and having at least one hydraulic accumulator (13) for maintaining a system pressure in the control lines (9 and 11), a safety valve arrangement being provided that activates in the case of a change in pressure caused by a malfunction, characterized in that, in the case of a change in pressure in the one control line (9 or 11) caused by a malfunction, the safety valve arrangement (41) activates such that a corresponding compensatory change in pressure is initiated in the other control line (11 or 9).
The invention relates to a damping system, in particular in the form of a hydraulic cabin suspension system, having at least one hydraulically activatable actuating part (20) and having at least one hydraulic accumulator (26) which is connected to the assignable actuating part (20). As a result of the fact that proportional damping for the respective actuating part (20) is obtained by means of a proportional throttle valve (10), a variable, proportional damping action can be realized which can react to events in a user-specific fashion.
F16F 9/096 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid in a chamber with a flexible wall comprising a hydropneumatic accumulator of the membrane type provided on the upper or the lower end of a damper or separately from or laterally on the damper
A damping system, in particular in the form of a hydraulic cabin spring system, has at least one hydraulically triggerable actuating part (20) and has at least one hydraulic accumulator (26) connected to the actuating part (20). By a proportional throttle valve (10), proportional damping for the actuating part (20) is achieved. Variable proportional damping which can react to events in a manner specific to the user can be implemented.
A roll having a shell element (7) which can be moved in an axially oscillating manner, in particular a distributor roll, wherein there is a drive (41) within the shell element which is mounted on the roll axle (1) and generates the oscillating axial movement of the shell element (7) via a gear device, is characterized in that the gear device has a gear element (39) which is guided to and fro along the roll axle (1) in the axial direction, and in that said gear element (39) is coupled to the shell element via a driver arrangement (23) which is freely rotatable relative to the gear element (39) and is operatively connected to the shell element in order to transmit the to-and-fro movement to said shell element.
Heat exchange device with a plate element (1) which has a shaped part (5) which extends over a heat exchange surface, is of at least partly flexible design and forms a partial boundary of a cavity (13), through which a heat transfer medium can flow and which is tightly closed off on the base side by a web (11) which forms on the heat exchange surface the contact surface for the heat transfer to a body (3), against which body the plate element (1) can be placed, wherein a flexible retaining plate (21) for pressing the plate element (1) against the body (3) rests on that top side of the shaped part (5) which is remote from the heat exchange surface on the base side, and wherein the flexibility of retaining plate (21) and the deformability of shaped part (5) and web (11) on the base side are selected in such a way that the plate element (1) can be adapted to the geometry of the body (3).
The invention relates to a hydropneumatic axle suspension for vehicles, especially the front axle thereof, which cooperates with at least one suspension cylinder (10) that is connected to a hydraulic accumulator (26; 24) on both the ring side (14) and the piston side (12) thereof, said hydraulic accumulator (26; 24) being triggerable by control electronics (18) with the aid of a valve unit (30; 28) that can be allocated to the hydraulic accumulator (26; 24). The ring side (14) of the suspension cylinder (10) is connected to a pressure value sensor (DA-R) which transmits the measured pressure values thereof to the control electronics (18). The pressure value sensor (DA-R) located on the ring side is connected to the discharge end (38) of the valve unit (30), which can be associated with the ring side (14) of the suspension cylinder (10).
B60G 21/06 - Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected fluid
patents
