| 摘要 |
<p>PURPOSE: To high accurately adjust ratio of a steering angle of a front wheel to a rear wheel while avoiding enlarging size of a tilt member by enabling a device to freely switch only front wheel steering, reverse phase 4-wheel steering and same phase 4-wheel steering, in the steering device for a speed sprayer. CONSTITUTION: A tilt member 26 is rotatably journalled around a rotary axial line 52 orthogonal to a lengthwise direction of a speed sprayer through a trunnion shaft 50. A hydraulic cylinder 60 is extended/contracted by operating a steering wheel rotated in an operating seat of the speed sprayer 10, to tilt the tilt member 26 moved around the rotary axial line 52. The tilt member 26 has a nut 84 screwed to a screw shaft 68 tot be displaced in the axial direction according to rotating the screw shaft. A rear end part of a front side drag link 32 is eccenrically placed relating to the rotary axial line 52 and connected to the tilt member 26, to connect a front end part of a rear side drag link 40 to the nut 84. A motor 74 with reduction gear is actuated by remote control from the operating seat, to drive the screw shaft 68 rotated.</p> |
