Patent ID: 6830116
Filing Date: 2004-12-14
Classification: A01D,B60K,B60Y,F16H,Y10T

Abstract:
A transmission mechanism for a work vehicle, comprising:a hydrostatic transmission (HST) including a hydraulic pump having a pump shaft for receiving power from the drive source of the vehicle, a hydraulic motor having a motor shaft rotatable in cooperation with the hydraulic pump, and an HST housing accommodating the hydraulic pump and the hydraulic motor therein; and a power take-off (PTO) power transmission path for dividedly transmitting the power from the pump shaft of the HST to a PTO unit for driving a work device, the PTO unit comprising a PTO shaft supported by the HST housing so as to extend outwardly from the HST housing, and a PTO cooperative mechanism accommodated in the HST housing and coupling the pump shaft to the PTO shaft to provide the PTO power transmission path, wherein the HST housing includes one side having a first opening for inserting the hydraulic pump and the hydraulic motor, and an opposite side having a second opening for inserting the PTO cooperative mechanism, the first opening of the HST housing being closed with a hydraulic block formed with an oil channel for the HST, whereby the pump shaft and the motor shaft are supported between the HST housing and the hydraulic block, and the second opening of the HST housing being closed with a closing member, whereby the PTO shaft is supported between the closing member and the HST housing.