The slide adopts hydraulicoverload protecting device, which controlled imported pump valve;
滑块采用液压过载保护装置，进口泵阀控制；
2
The hydraulic system with variable displacement pump-constant displacement motor has the function of overload protection.
由变量泵-定量马达组成的液压系统具有超载保护，防止电缆被强行拉断的功能。
3
The problem of crane overload protection of the hydraulic static pile driving machine is originally solved by a full hydraulic project through comparison and demonstration in advance in this paper.