The winch adopted valve-controlled proportional speed regulation hydraulic drive and PLC control to realize stepless speed change of the winch drum and coordinating control of the cable layer.
管线绞车采用阀控比例调速液压驱动、LC控制，实现了卷筒的无级变速和排缆器的协调控制。
2
The operations of drive, steering, suspension, and kickstand of girder transport vehicle are driven by electro-hydraulic proportional control system.