US 11,752,857 B2
Wheel-driven vehicle
Erik Nilsson, Obbola (SE); and Espen Miland, Hömefors (SE)
Assigned to Komatsu Forest AB, Umeå (SE)
Appl. No. 17/287,906
Filed by Komatsu Forest AB, Umeå (SE)
PCT Filed Oct. 21, 2019, PCT No. PCT/SE2019/051034
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/085981, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. 1851314-3 (SE), filed on Oct. 24, 2018.
Prior Publication US 2021/0354551 A1, Nov. 18, 2021
Int. Cl. B60K 7/00 (2006.01); B60K 17/10 (2006.01); B60K 17/348 (2006.01); B60K 17/356 (2006.01); B62D 11/04 (2006.01); B62D 55/065 (2006.01)
CPC B60K 7/0015 (2013.01) [B60K 17/10 (2013.01); B60K 17/348 (2013.01); B60K 17/356 (2013.01); B62D 11/04 (2013.01); B62D 55/0655 (2013.01); B60Y 2200/22 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A wheel-driven vehicle, comprising
a front vehicle unit and a rear vehicle unit, which via a joint arrangement is coupled to the front vehicle unit,
a power source,
a first centre beam provided on the front vehicle unit and a second centre beam provided on the rear vehicle unit, wherein the first and the second centre beams extend in a longitudinal direction of the vehicle,
a first driving means and a second driving means, which are provided each on opposite sides of the first centre beam and accommodated in the first centre beam,
a third driving means and a fourth driving means, which are provided on opposite sides of the second centre beam and accommodated in the second centre beam,
wherein the respective driving means comprise at least one driving wheel,
a power-transmitting arrangement for transmitting power from said power source to the driving wheel that is included in each of the driving means,
wherein the power-transmitting arrangement comprises a hydraulic motor provided in connection with the respective driving wheels and a transmitting arrangement that is coupled to the motor, which transmitting arrangement is coupled to the driving wheel for driving thereof,
wherein
the hydraulic motor provided in connection with the respective driving wheel is a hydrostatic motor,
the power-transmitting arrangement comprises a first, a second, a third, a fourth separate hydraulic circuit for driving of the respective driving means' hydrostatic motor, and
the power-transmitting arrangement comprises one or more pumps driven by the power source for driving the respective hydrostatic motor, and
a regulating means configured to individually regulate a load outlet on the respective hydrostatic motor,
wherein at least one pump is arranged to drive two or more driving means' hydrostatic motor and that said regulating means comprise a valve arrangement provided to allow for individual regulation of the power output from the pump to the hydrostatic motor belonging to the respective driving means,
wherein the regulating means further comprises an angle sensor provided to detect an angle between the first vehicle unit and the second vehicle unit,
a hydrostatic motor displacement sensor provided to sense displacement of the respective hydrostatic motor,
a hydrostatic motor revolution speed sensor provided to sense the revolution speed of the respective hydrostatic motor,
a vehicle position sensor provided to sense the vehicle's global position and motion, and a control unit provided to control the valve arrangement and thereby individually regulate a load outlet on the respective hydrostatic motor, wherein the control unit is provided to individually regulate the load outlet on the respective hydrostatic motor based on input from said angle sensor, hydrostatic motor revolution speed sensor and said vehicle position sensor.