| 摘要 |
<p>The hydraulic generator of the forestry winch with added hydraulic engine for rotating the driving device for unrolling the pulling rope from the winding drum features an added valve (9) in front of the cylinder (3). In front of the hydraulic engine (8) there is also an additional valve (10). The valve (9) is in the shutdown position open and requires for its locking an electrical signal from the direction of the cylinder (3), while the valve (10) is closed in the shutdown position in the direction of the hydraulic engine (8) and requires in order to open an electrical signal. The triggered electrical signal for the flow direction of the hydraulic medium into the cylinder (3) and the hydraulic engine (8) switches the control valve (21) and the valve (9) on, while after a certain time lapse the valve (1) is triggered. The time lapse is larger than the required time for the cylinder (3) to ensure the shutdown of the brake.</p> |
