The invention relates to a hydraulic control system of a front lifting appliance, a control method of the hydraulic control system and the front lifting appliance. The hydraulic control system of the front lifting appliance comprises a valve block, two inclined oil cylinders, a pressure reducing valve, a three-position four-way reversing valve, an overflow pressure reducing valve and a two-position four-way reversing valve. According to the lifting appliance, the pressure reducing valve and the three-position four-way reversing valve are arranged, the forward inclination function or the backward inclination function of the lifting appliance is achieved through the reversing function of the three-position four-way reversing valve, the output pressure of the pressure reducing valve is controlled and adjusted, and therefore the forward inclination angle or the backward inclination angle of the lifting appliance is controlled and adjusted; by arranging the overflow pressure reducing valve and the two-position four-way reversing valve, the lifting appliance can be conveniently installed in a box, rapidly leveled and damped by inertia swing through the reversing function of the two-position four-way reversing valve.
本发明涉及一种正面吊具液压控制系统及其控制方法和正面吊具,该正面吊具液压控制系统包括阀块、两个倾斜油缸、减压阀、三位四通换向阀、溢流减压阀以及二位四通换向阀。本发明通过设置减压阀和三位四通换向阀,通过三位四通换向阀的换向功能实现吊具的前倾功能或后倾功能,控制调节减压阀的输出压力,从而控制调节吊具前倾或后倾的角度;通过设置溢流减压阀以及二位四通换向阀,通过二位四通换向阀的换向功能实现吊具便捷着箱、快速找平以及惯性摆动的阻尼作用。
Hydraulic control system of front lifting appliance, control method of hydraulic control system and front lifting appliance
一种正面吊具液压控制系统及其控制方法和正面吊具
2024-03-15
Patent
Electronic Resource
Chinese
Mechanical, hydraulic and electrical control combined lifting appliance
European Patent Office | 2015
|European Patent Office | 2021
|