| 摘要 |
PURPOSE:To permit the always stable traveling by installing an engine and a driver's seat side so that the longitudinal position can be adjusted for a frame and permitting each partial charged load of the front and rear wheels to be simply varied by shift-adjusting the center of gravity of a machine body in the longitudinal direction. CONSTITUTION:When a working machine having a large weight is directly installed onto the rear part of the machine body of an agricultural tractor, the partial charged load of a rear wheel 10 increases, and the partial charged load of a front wheel 7 decreases and the front wheel 7 is floated-up on traveling, and unstable state is formed. In this case, a hydraulic control valve is switched by an operating lever. Then, a double-acting hydraulic cylinder 27 is pushed-out, and an engine 14 and an intermediate transmission box 15 side shift forward, allowing the front and rear rollers 16 and 17 installed at the lower edge to be rolled along a frame 2. Therefore, the partial charged load of the front wheel 7 increases, and the stable traveling state can be obtained. Therefore, each partial charged load of the front and rear wheels can be adjusted simply. |
