Tcm Corporation

Hitachi Construction Machinery Co., Ltd.

Seishi Morishita

Koji Hyodo

Koji Takano

Masami Higaki

Kiyoyasu Hasegawa

Akira Takeshita

Nobuo Masano

Kenji Uezono

Hiromi Ishida

A hydraulic power transmission device in a work vehicle transmits motive power from two hydraulic motors disposed in parallel to each other. The hydraulic power transmission device includes: a case; a first motor shaft and a second motor shaft respectively disposed in a right-side area and in a left-side area inside the case, each linked to one of the two hydraulic motors; a counter shaft disposed in an area ranging between the first motor shaft and the second motor shaft in the case; an output shaft; a first transmission mechanism that transmits motive power from the first motor shaft to the output shaft via the counter shaft; a second transmission mechanism that transmits motive power from the second motor shaft to the output shaft; and a hydraulic clutch device disposed at the counter shaft, that transmits the motive power from the first motor shaft to the output shaft or cuts off transmission of the motive power.

Hydraulic power transmission device and work vehicle

Front wheels ( ) are attached to transmission devices ( ) which are mounted to the vehicle body ( ) to be rotatable around vertical axes ( ), and rotating means ( ) are provided between the side of the vehicle body ( ) and the transmission devices ( ), whereby the front wheels are steered to turn laterally at substantially right angles. An electric motor ( ) is attached to the transmission device ( ) to be located under the vertical axis ( ). A case body ( ) of the electric motor ( ) is constructed by an outer case part ( A) and a non-loaded side bracket ( B), and a loaded side end portion of the outer case-part ( A) is connected to the transmission device case body ( ). The drive shaft ( ) is rotatably supported by the non-loaded side bracket ( B) at one end and by the transmission device case body ( ) at the other end. A driving portion ( ) provided at the other end side of the drive shaft ( ) is operatively connected to an axle ( ). As a result, a traveling drive device section can be constructed to be compact with assembling easiness.

Working vehicle with transverse travel system

Growing community of inventors

Inashiki-gun, Japan

Seishi Morishita