초록 ▼

There is provided a traveling drive apparatus in a working vehicle having a traveling body with front wheels and rear wheels which are adapted to be controlledly driven respectively, characterized in that: the traveling body has mounted thereon an engine, a transmission and a hydraulic pump which ar

There is provided a traveling drive apparatus in a working vehicle having a traveling body with front wheels and rear wheels which are adapted to be controlledly driven respectively, characterized in that: the traveling body has mounted thereon an engine, a transmission and a hydraulic pump which are coupled to the engine and a first hydraulic motor that is adapted to be driven by the hydraulic pump whereas a left hand side wheel and a right hand side wheel on one of a front side and a rear side of the traveling body are adapted to be selectively coupled to either of an output side of the engine and an output side of the first hydraulic motor; and a left hand side wheel and a right hand side wheel of the other of the front side and the rear side are mounted on a suspension unit having a second hydraulic motor and a third hydraulic motor which are provided independently of each other and are adapted to be driven by the hydraulic pump and which are respectively coupled to the left hand side wheel and the right hand wheel of the other of the front side and the rear side of the traveling body.

대표청구항 ▼

[ What is claimed is:] [1.] A traveling drive apparatus in a working vehicle, comprising a traveling body with front wheels and rear wheels which are adapted to be driven respectively in a controlled manner and a turning body mounted to the traveling body, an engine and a transmission being mounted

[ What is claimed is:] [1.] A traveling drive apparatus in a working vehicle, comprising a traveling body with front wheels and rear wheels which are adapted to be driven respectively in a controlled manner and a turning body mounted to the traveling body, an engine and a transmission being mounted to said traveling body, and said engine being provided at either one side of the front and rear wheels,wherein the transmission includes a pump means and a first hydraulic motor and an output shaft of the transmission is coupled to one side of the front and rear wheels at which the engine is not provided in a manner that the transmission is operatively connected to the first hydraulic motor in an operation starting time and is operatively connected to an output side of the engine in a high speed traveling operation, andwherein second and third hydraulic motors are provided for another one side of the front and rear wheels at which the engine is provided and coupled to the another one side of the wheels through speed reduction mechanisms, and clutches are further provided for suspension units so as to perform connecting and disconnecting operations of the second and third hydraulic motors to the wheels through the speed reduction mechanisms.