| 摘要 |
PURPOSE: The safety apparatus of a tractor cultivator is provided to improve operational efficiency and to prevent the destruction of the apparatus by alleviating impacts generated in case of the overload of a cultivating blade. CONSTITUTION: The safety apparatus of a tractor includes a main frame(100), a cultivating blade, a hydraulic cylinder(300), and an alleviating cylinder(320). A connecting part is arranged at the front part of the main frame. The cultivating blade is rotatably installed at the main frame. The hydraulic cylinder is installed between the main frame and the cultivating blade and supports the upward rotation of the cultivating blade based on hydraulic pressures. The alleviating cylinder is integrated with the hydraulic cylinder. The alleviating cylinder shares the inner hydraulic pressures of the hydraulic cylinder and pressurizes the shared hydraulic pressures by an elastic body(322). |
