A tree harvesting head for a tree harvesting machine, wherein the tree harvesting head comprises at least one cutting device, at least two feed wheels and a radar device. The radar device comprises at least one radar transmitter antenna arranged to transmit a signal to a tree trunk to be measured, at least two radar receiver antennas arranged to receive a radar signal reflected in at least a first and a second location in response to the transmitted radar signal, wherein the first and second locations are different locations. The radar device further comprises a device for obtaining characteristics related to the tree trunk based on the signal(s) reflected at the first and second locations. The device for obtaining characteristics related to the tree trunk is arranged to determine a tree trunk signature of a tree trunk segment located at the first location, to identify the determined tree trunk signature when the tree trunk segment has travelled to the second location and to determine a length of the tree trunk based thereon.
G01B 5/00 - Measuring arrangements characterised by the use of mechanical techniques
G01B 11/04 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
G01B 15/02 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons for measuring thickness
G01S 13/88 - Radar or analogous systems, specially adapted for specific applications
2.
A HARVESTING HEAD FOR LENGTH DETERMINATION OF A TREE TRUNK AND AN ASSOCIATED METHOD
The present disclosure relates to a tree harvesting head (100) for a tree harvesting machine (110), wherein the tree harvesting head comprises at least one cutting device (102), at least two feed wheels (101) and a radar device (103). The radar device (103) comprises at least one radar transmitter antenna arranged to transmit a signal to a tree trunk to be measured, at least two radar receiver antennas arranged to receive a radar signal reflected in at least a first (114) and a second location (115) in response to the transmitted radar signal, wherein the first and second locations are different locations. The radar device further comprises means for obtaining characteristics (160) related to the tree trunk based on the signal(s) reflected at the first (114) and second locations (115). The means for obtaining characteristics related to the tree trunk is arranged to determine a tree trunk signature of a tree trunk segment located at the first location, to identify the determined tree trunk signature when the tree trunk segment has travelled to the second location and to determine a length of the tree trunk based thereon.
G01B 11/04 - Measuring arrangements characterised by the use of optical techniques for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
G01B 15/00 - Measuring arrangements characterised by the use of electromagnetic waves or particle radiation, e.g. by the use of microwaves, X-rays, gamma rays or electrons
G01B 21/02 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
G01B 21/06 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness specially adapted for measuring length or width of objects while moving
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
G01S 13/00 - Systems using the reflection or reradiation of radio waves, e.g. radar systemsAnalogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Electric and electronic control and steering equipment, namely motion sensors, optical sensors, position sensors, electric control panels, electronic speed controllers for controlling harvesting units for forestry machines.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electric and electronic control and steering equipment, namely directional sensors, systems and simulators for controlling harvesting units for forestry machines
09 - Scientific and electric apparatus and instruments
Goods & Services
Electric and electronic control and steering equipment for harvesting units for forestry machines.
8.
Tree harvesting machine, a tree harvesting monitoring system, a tree harvesting head, a method for controlling operation of a tree harvesting head and a method for monitoring operation of a tree harvesting machine
b) arranged to drive the feed wheels (102). The present disclosure also relates to associated tree harvesting monitoring systems, tree harvesting heads, methods and computer programs.
A bearing arrangement for a unit that is mutually turnable around a center of rotation (R) comprising an external part (1) and an internal part (7), which, with the aid of high hydraulically acting pressure, is arranged to achieve a reciprocating rotary motion, or that is arranged to achieve a high hydraulic pressure from an applied torque from a reciprocating motion, whereby the external part (1) is provided with side walls arranged to axially surround at least a part of the internal part (7), and whereby the external part (1) comprises a radially inwardly arranged and essentially surrounding cavity (11, 12, 13, 14) in which the internal part (7) is arranged such that it can be rotated, which cavity (11, 12, 13, 14) is limited in the circumferential direction by at least one wing (3, 4) that protrudes inwards from the external part (1) and also limited by at least one wing (9, 10) that protrudes radially outwards from the internal part (7), which wings (3, 4, 9, 10) limit at least two chambers or compartments (11, 12, 13, 14) between the external part (1) and the internal part (7). At least one of the side walls of the external part is fixed connected with the, at least one, wing (3, 4) that protrudes radially inwards towards the internal part (7), which wing demonstrates a surface that faces radially inwards and that has a circular concave curvature for connection with an outwardly facing circular convex contact surface (8) at the internal part (7).
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
F15B 15/12 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
F16D 1/033 - Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
The bearing assembly, consisting of a stator component (S1) and a rotor component (R1), where the rotor component is adapted for a back-and-forth oscillatory movement (P, −P) relative to the stator component, whereby a number of cavities (301 and 302; 303 and 304) coordinated along the outer periphery of the rotor component and the inner periphery of the stator component, formed with an increasing volume (301 and 302) and a decreasing volume (303 and 304), respectively, during rotation of the rotor component in an initial direction (P) from an initial position (IP) and towards a final position (FP), while the cavities allow the volumes to decrease and increase during a rotational motion of the rotor component in a second direction (−P) in relation to the stator component (S1). The invention specifies that the above-mentioned bearing arrangement is to be adapted to interact with an instrument (M1) in order to determine, with the help of at least two components, the momentary position of the rotor component in relation to the stator component.
F04C 2/063 - Rotary-piston machines or pumps 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 with coaxially-mounted members having continuously-changing circumferential spacing between them
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F15B 15/12 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
F01L 1/344 - Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
B62D 5/097 - Telemotor driven by steering wheel movement gerotor type
F15B 15/28 - Means for indicating the position, e.g. end of stroke
F16C 33/66 - Special parts or details in view of lubrication
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
11.
A TREE HARVESTING MACHINE, A TREE HARVESTING MONITORING SYSTEM, A TREE HARVESTING HEAD, A METHOD FOR CONTROLLING OPERATION OF A TREE HARVESTING HEAD AND A METHOD FOR MONITORING OPERATION OF A TREE HARVESTING MACHINE
The present disclosure relates to a tree harvesting machine (120) having a crane arm (118), wherein the crane arm (118) comprises a tree harvesting head (100; 200) arranged at a free end of the crane arm (118). The tree harvesting head (100) comprises a saw (104) and at least two feed wheels (102). The tree harvesting head (100) further comprises an electric motor (106a) arranged to drive the saw (104), and at least one electric motor (106b) arranged to drive the feed wheels (102). The present disclosure also relates to associated tree harvesting monitoring systems, tree harvesting heads, methods and computer programs.
An arrangement that can be turned by an assigned hydraulic pressure and flow, related to a chain saw supported by a harvesting unit for crosscutting timber, wherein a bearing arrangement is arranged for the chain saw and oriented between a guide bar housing and the chain saw's drive motor unit, wherewith an oscillatory motion can be activated by a hydraulic control valve, through which hydraulic flow is alternatively controlled via feed or connection lines to the bearing arrangement, for a first or second operating mode. The arrangement is activated via hydrostatic pressure and coordinated with the guide bar housing, and with the drive motor unit, via surrounding perforated discs oriented in parallel and aligned around an axis of rotation for a drive shaft. The hydrostatic affects the arrangement's oscillatory motion for a reciprocal motion pattern, while spent hydraulic oil serves as a lubricating film between the opposing bearing surfaces.
A01G 23/091 - Sawing apparatus specially adapted for felling trees
B27B 17/08 - Drives or gearingsDevices for swivelling or tilting the chain saw
F01C 9/00 - Oscillating-piston machines or engines
F01C 13/02 - Adaptations of machines or engines for special useCombinations of engines with devices driven thereby for driving hand-held tools or the like
F01C 21/00 - Component parts, details, or accessories, not provided for in groups
F01C 21/10 - Outer members for co-operation with rotary pistonsCasings
F15B 15/12 - Fluid-actuated devices for displacing a member from one position to anotherGearing associated therewith characterised by the construction of the motor unit of the oscillating-vane or curved-cylinder type
F15B 21/12 - Fluid oscillators or pulse generators
F16C 33/66 - Special parts or details in view of lubrication
F16C 32/06 - Bearings not otherwise provided for with moving member supported by a fluid cushion formed, at least to a large extent, otherwise than by movement of the shaft, e.g. hydrostatic air-cushion bearings
Method and device for delimbing a tree trunk (60) in a compliant gripping state defined by a set of limbing knives (18, 24, 26, 28) enclosing the trunk. The limbing knives are repeatedly adjusted through a control unit (46) for adaption of the gripping state to a varying thickness of the trunk when the trunk is advanced between the knives for the delimbing of the trunk. The invention comprises entering a desired compliance (D1) of the gripping state in the control unit (46), detecting an actual compliance (d) of the gripping state, and performing each adjustment of the limbing knives via the control unit until the actual compliance (d) corresponds to the desired compliance (D1).
Method and device for the determination of a thickness of a cross-section (S) of a tree trunk (30) received in a harvesting assembly (10) comprising a pair of opposite feed wheels (14) engaging with the tree trunk and a delimbing knife (18) abutting against the tree trunk. The mutual position of the feed wheels is detected as a measure of a transverse dimension (D1) of the cross-section of the tree trunk. The position of the delimbing knife (18) in relation to an abutment surface (22) of the tree trunk opposite thereto is detected as a measure of an additional transverse dimension (D2) of the cross-section (S) of the tree trunk, which additional transverse dimension forms an essentially right angle with the first-mentioned transverse dimension. The thickness of the cross-section (S) of the tree trunk is calculated based on the two measures of the transverse dimensions (D1, D2).
Method and device for delimbing a tree trunk (60) in a compliant gripping state defined by a set of limbing knives (18, 24, 26, 28) enclosing the trunk. The limbing knives are repeatedly adjusted through a control unit (46) for adaption of the gripping state to a varying thickness of the trunk when the trunk is advanced between the knives for the delimbing of the trunk. The invention comprises entering a desired compliance (D1) of the gripping state in the control unit (46), detecting an actual compliance (d) of the gripping state, and performing each adjustment of the limbing knives via the control unit until the actual compliance (d) corresponds to the desired compliance (D1).
Method and device for the determination of a thickness of a crosssection (S) of a tree trunk (30) received in a harvesting assembly (10) comprising a pair of opposite feed wheels (14) engaging with the tree trunk and a delimbing knife (18) abutting against the tree trunk. The mutual position of the feed wheels is detected as a measure of a transverse dimension (D1) of the cross-section of the tree trunk. The position of the delimbing knife (18) in relation to an abutment surface (22) of the tree trunk opposite thereto is detected as a measure of an additional transverse dimension (D2) of the cross-section (S) of the tree trunk, which additional transverse dimension forms an essentially right angle with the first-mentioned transverse dimension. The thickness of the cross-section (S) of the tree trunk is calculated based on the two measures of the transverse dimensions (D1, D2).
An arrangement for the capture of a broken sawchain (16) of a chainsaw (10) comprising a stationary shield (32) that covers a rear section of the saw. The shield (32) has an end surface (42) that extends between an outer surface and an inner surface of the shield (32) and has such hardness and is designed with a convex curvature of such a radius that one part of the broken sawchain (16) that comes to an external location during operation of the saw (10) can slide around the end surface (42) in an essentially unhindered manner in a direction towards the inner surface.
A feed wheel (10) for tree trunks, with rows of drive teeth (30) protruding from extended supports (20) united with a peripheral surface (18) of the wheel. In order to make the spaces between the supports (20) more self-clearing, supports (20) that are neighbours extend mutually divergently throughout the complete sideways direction of the peripheral surface (18) (at an angle α).
B27B 31/00 - Arrangements for conveying, loading, turning, adjusting, or discharging the log or timber, specially designed for saw mills or sawing machines
A01B 29/04 - Rollers with non-smooth surface formed of rotatably- mounted rings or discs or with projections or ribs on the roller bodyLand packers
A TREE HARVESTING MACHINE, A TREE HARVESTING MONITORING SYSTEM, A TREE HARVESTING HEAD, A METHOD FOR CONTROLLING OPERATION OF A TREE HARVESTING HEAD AND A METHOD FOR MONITORING OPERATION OF A TREE HARVESTING MACHINE
The present disclosure relates to a tree harvesting machine (120) having a crane arm (118), wherein the crane arm (118) comprises a tree harvesting head (100; 200) arranged at a free end of the crane arm (118). The tree harvesting head (100) comprises a saw (104) and at least two feed wheels (102). The tree harvesting head (100) further comprises an electric motor (106a) arranged to drive the saw (104), and at least one electric motor (106b) arranged to drive the feed wheels (102). The present disclosure also relates to associated tree harvesting monitoring systems, tree harvesting heads, methods and computer programs.
The present disclosure relates to a tree harvesting head (100) for a tree harvesting machine (110), wherein the tree harvesting head comprises at least one cutting device (102), at least two feed wheels (101) and a radar device (103). The radar device (103) comprises at least one radar transmitter antenna arranged to transmit a signal to a tree trunk to be measured, at least two radar receiver antennas arranged to receive a radar signal reflected in at least a first (114) and a second location (115) in response to the transmitted radar signal, wherein the first and second locations are different locations. The radar device further comprises means for obtaining characteristics (160) related to the tree trunk based on the signal(s) reflected at the first (114) and second locations (115). The means for obtaining characteristics related to the tree trunk is arranged to determine a tree trunk signature of a tree trunk segment located at the first location, to identify the determined tree trunk signature when the tree trunk segment has travelled to the second location and to determine a length of the tree trunk based thereon.
G01S 7/41 - Details of systems according to groups , , of systems according to group using analysis of echo signal for target characterisationTarget signatureTarget cross-section
A feed wheel (10) for tree trunks, with rows of drive teeth (30) protruding from extended supports (20) united with a peripheral surface (18) of the wheel. In order to make the spaces between the supports (20) more self-clearing, supports (20) that are neighbours extend mutually divergently throughout the complete sideways direction of the peripheral surface (18) (at an angle .alpha.).
Method and device for delimbing a tree trunk (60) in a compliant gripping state defined by a set of limbing knives (18, 24, 26, 28) enclosing the trunk. The limbing knives are repeatedly adjusted through a control unit (46) for adaption of the gripping state to a varying thickness of the trunk when the trunk is advanced between the knives for the delimbing of the trunk. The invention comprises entering a desired compliance (D1) of the gripping state in the control unit (46), detecting an actual compliance (d) of the gripping state, and performing each adjustment of the limbing knives via the control unit until the actual compliance (d) corresponds to the desired compliance (D1).
Method and device for the determination of a thickness of a crosssection (S) of a tree trunk (30) received in a harvesting assembly (10) comprising a pair of opposite feed wheels (14) engaging with the tree trunk and a delimbing knife (18) abutting against the tree trunk. The mutual position of the feed wheels is detected as a measure of a transverse dimension (D1) of the cross-section of the tree trunk. The position of the delimbing knife (18) in relation to an abutment surface (22) of the tree trunk opposite thereto is detected as a measure of an additional transverse dimension (D2) of the cross-section (S) of the tree trunk, which additional transverse dimension forms an essentially right angle with the first-mentioned transverse dimension. The thickness of the cross-section (S) of the tree trunk is calculated based on the two measures of the transverse dimensions (D1, D2).
