STEERING AND DRIVING DEVICE FOR TRAVELING VEHICLE

摘要

PROBLEM TO BE SOLVED: To make operating directions in forwarding and backwarding coincide with each other when a vehicle revolves while the vehicle travels, by simultaneously switching a rotating direction of each movable swash plate of hydraulic pumps of a traveling and driving HST and a steering HST by the operation of a forwarding and backwarding switching operating tool and to prevent the vehicle from being curved in an unintended direction because the operating direction becomes opposite to the sense of an automobile at the time of a backwarding. SOLUTION: This device has a traveling and driving HST constituted of a hydraulic pump and a hydraulic motor, a steering HST and differential devices interlocked and connected with each output shaft of each hydraulic motor. A movable swash plate of a hydraulic pump of the traveling and driving HST is linked with a transmission pedal, a movable swash plate of a hydraulic pump of the traveling and driving steering HST 22 is linked with a steering wheel 14, a control arm 74 connected with each movable swash plate is connected to a link 115 switching each rotating direction and this link 115 is linked with a forwarding and backwarding switching and operating tool 5.