The invention relates to the technical field of engineering machinery, in particular to a pipe hoisting machine, a hydraulic system of the pipe hoisting machine comprises a first winch, a first variable displacement motor, an oil tank, an oil pump, two first pipelines, a working valve, a first electromagnetic valve and a control handle, the first winch is in transmission connection with one of the lifting arm and the lifting hook, a circulating oil way is formed among the oil tank, the oil pump and the first variable displacement motor, a first control valve in the working valve is used for controlling the rotating direction of the first variable displacement motor, a first control switch is arranged on the control handle, and the first electromagnetic valve is provided with a first electromagnetic control end. The first electromagnetic control end of the first electromagnetic valve can obtain different currents by enabling the first control switch to be located at the first position and the second position, so that the displacement of the first variable displacement motor can be changed, and the first winch can output high speed and low speed to adapt to different working conditions.
本发明涉及工程机械技术领域,具体公开了一种吊管机,该吊管机的液压系统包括第一卷扬、第一变量马达、油箱、油泵、两个第一管路、工作阀、第一电磁阀和控制手柄,第一变量马达与第一卷扬传动连接,第一卷扬与吊臂和吊钩中的一个传动连接,油箱、油泵、第一变量马达之间形成循环油路,工作阀中的第一控制阀用于控制第一变量马达的转动方向,控制手柄上设置有第一控制开关,第一电磁阀具有第一电磁控制端,通过使第一控制开关位于第一位置和第二位置,可使第一电磁阀的第一电磁控制端获得不同的电流,进而可使第一变量马达的排量发生改变,可使第一卷扬输出高速和低速,以适应不同的工况。
Pipe hoisting machine
一种吊管机
2022-09-30
Patent
Electronic Resource
Chinese
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