PROBLEM TO BE SOLVED: To provide a simple arranging and attaching structure for constituting a transmission device by loading an HST-type trans mission provided with an HST type continuously variable transmission for traveling and an HST type continuously variable transmission for turning and which two hydraulic pumps and two hydraulic motors are arranged on a transmission case. ;SOLUTION: In a structure in which two hydraulic pumps and two hydraulic motors are integrally arranged and an HST type transmission device is provided on a transmission case 22, two hydraulic pumps are arranged in series, pump shafts of respective hydraulic pumps are connected to each other by a coupling and driven, a center section C in which an oil passage is formed is arranged on a part on which the coupling is arranged, two hydraulic pumps are provided on surfaces on both sides of the center section, two hydraulic motors are provided on one side surface of the center section, and the other surface of the center section is fixed to the attaching sruface of the transmission case.;COPYRIGHT: (C)1998,JPO
展开▼
