| 摘要 |
The invention offers a hydraulic system for driving a fork lift truck providing low price with simple structure, easy maintenance and a loading/unloading by a single power source by utilizing a combined hydraulic lift and driver. The device consists of a chassis(20); a hydraulic power pack(5) with an oil tank(4) and a hydraulic pump(3) which develops power from a DC motor(1) through a reduction gear box(2); a vertical cylinder(6) lifting the cargo; a vertical cylinder control valve(7) controlling the hydraulic pressure supplied from the vertical cylinder(6); a vane motor(8) driven by the hydraulic power from the power pack(5); wheels(9); a direction control valve(10); a vane motor speed regulating means; a tilt cylinder(11); and a tilt cylinder regulating valve(12). The invention provides a low manufacturing cost and easy repair and maintenance.
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