| 摘要 |
<p>A hydraulic driving device for the steering wheel of a dump truck in which a hydraulic motor can be mounted and/or dismounted therefrom after it has been assembled to thereby make the size of the hydraulic motor larger. A driving shaft (20) is rotatably supported on a supporting shaft portion (7) of a receiving seat (6) supported by a yoke (5), and a steering wheel (2) is rotatably mounted on the outer circumference of this supporting shaft portion (7). The steering wheel (2) and one end of the driving shaft (20) are coupled together via a speed reduction mechanism (27), and the motor main body (33) of a hydraulic motor (32) is mounted by means of a bolt (34) on the supporting shaft portion (7) in a position opposite to the steering wheel (2). The rotating shaft (35) of the motor is caused to protrude inside the supporting shaft portion (7) so as to be coupled to the other end of the driving shaft (20), whereby it is possible to mount or dismount the motor (32) by tightening or loosening the bolt (34).</p> |
