Transport system and method for autonomous work vehicles

    公开(公告)号:US11254379B2

    公开(公告)日:2022-02-22

    申请号:US16386004

    申请日:2019-04-16

    摘要: An autonomous work vehicle having a chassis, a power system disposed on the chassis, a field wheel system coupled to the chassis and the power system, and a hitch assembly. The power system is configured to power the autonomous work vehicle in an autonomous control mode. The field wheel system is configured to drive the autonomous work vehicle in a field in the autonomous control mode. The hitch assembly is configured to couple to a lead vehicle in a transport mode. The autonomous work vehicle may engage wheels of a transportation wheel system with a road to support the autonomous work vehicle on the road. The autonomous work vehicle may be coupled via the hitch assembly to the lead vehicle, then transported on a road. A brake system of the transportation wheel system may be coupled to the lead vehicle.

    DRIVE SYSTEM AND METHOD FOR VEHICLE EMPLOYING MULTIPLE ELECTRONIC MOTORS

    公开(公告)号:US20220032784A1

    公开(公告)日:2022-02-03

    申请号:US17503410

    申请日:2021-10-18

    摘要: A drive system with one or more electrically driven axles, a transmission subsystem, which is drivingly coupled to a drive gearbox of each of the electrically driven axles, first and second motors, which are each drivingly coupled to the transmission subsystem and have different motor characteristics, and a controller. The drive gearbox of each axle transmits rotary power to an associated set of vehicle wheels. The controller controls the first and second motors responsive to at least a torque request. Over a significant portion of the operating range of the drive system, the controller is configured to vary the respective magnitudes of the rotary power provided by the first and second motors to satisfy the torque request in a manner that maximizes a combined efficiency of the motors in a predetermined manner.

    Electric Drive Axle for a Vehicle
    35.
    发明申请

    公开(公告)号:US20220032755A1

    公开(公告)日:2022-02-03

    申请号:US17277492

    申请日:2019-09-13

    摘要: An electric drive axle for a vehicle includes at least one first electric vehicle drive system (1) for driving at least one vehicle wheel (11, 12) and at least one connection interface (8) for at least one power take-off (PTO). The vehicle drive system (1, 13) is coupled at least to one first double shift element (6) such that, at least in a first engagement position of the first double shift element (6), the vehicle drive system (1, 13) is drivingly coupled to at least one vehicle wheel (11, 12) and, in a second engagement position of the first double shift element (6), the vehicle drive system (1, 13) is decoupled from the at least one vehicle wheel (11, 12) and is drivingly coupled to the connection interface (8) for the power take-off (PTO). A vehicle with an electric drive axle is also provided.

    Axle assembly for low floor vehicle

    公开(公告)号:US11220168B2

    公开(公告)日:2022-01-11

    申请号:US16805104

    申请日:2020-02-28

    发明人: Shaun Mepham

    IPC分类号: B60K1/02 B60K17/12

    摘要: An electric axle assembly includes a suspension frame and drive assemblies coupled to opposing sides of the suspension frame. The electric axle assembly engages with wheels of a vehicle for rotating the wheels to move the vehicle along a ground surface. A drive unit transfers motive force to the wheels through one or more gearsets and axle shafts.

    Dual motor coaxial e-axle with rotor shaft locking mechanism

    公开(公告)号:US11198359B2

    公开(公告)日:2021-12-14

    申请号:US16715942

    申请日:2019-12-16

    发明人: Matthew Payne

    摘要: A system for selectively locking two coaxial axle shafts of an electric axle is provided. The system includes a first electric motor having a first rotor shaft configured to drive a first axle shaft. The system also includes a second electric motor having a second rotor shaft configured to drive a second axle shaft coaxial with the first axle shaft. An actuator is configured to selectively activate to operate in a safety mode. When operated to assume the safety mode, the actuator causes the first rotor shaft to lock to the second rotor shaft, such that the two shafts rotate in unison. This allows one of the two motors to drive both axle shafts in the event of a fault in one of the motors.