发明名称 Hydraulic transmission for driving and steering wheels
摘要 In a hydraulic transmission for driving and steering wheels of a vehicle, which has at least a first pair of laterally disposed wheels, a first hydraulic pump is operatively connected to a driving source with inlet/outlet ports respectively and fluidly connected to a high pressure side and a low pressure side of the parallel fluid passages. A second hydraulic pump is operatively connected to the driving source and having inlet/outlet ports respectively and fluidly connected to high and low pressure sides of the fluid passages between the second pair of hydraulic motors. The first hydraulic pump is of a variable displacement type that varies the amount of hydraulic fluid to be discharged and supplied, based upon the displacement amount of a first output adjustment member, in which the displacement amount is varied by operating the first output adjustment member via a driving-speed operation member. The second hydraulic pump is of a variable displacement type that varies the amount of hydraulic fluid to be discharged and sucked, based upon the displacement amount of a second output adjustment member, in which the displacement amount is varied by operating the second output adjustment member via a steering operation member. Rotational power is input from each of the second pair of hydraulic motors to a corresponding one of the output shafts of the first pair of hydraulic motors by a magnitude corresponding to the operational amount of the steering operation member in a different rotational direction from each other.
申请公布号 US2004200657(A1) 申请公布日期 2004.10.14
申请号 US20030410145 申请日期 2003.04.10
申请人 STOLL KERWYN;ISHII NORIHIRO 发明人 STOLL KERWYN;ISHII NORIHIRO
分类号 B60K17/356;(IPC1-7):B60K17/356 主分类号 B60K17/356
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