液压部分

液压系统由油箱、油泵、多个液压阀及油缸组成。溢流阀控制系统最高压力, 起到安全阀的作用, 防止整机过载, 该阀出厂时已调整好。电磁换向阀控制上压箱升降。液控单向阀用以防止压箱静止时因自重而自行下滑, 起平衡支承作用。电磁球阀用于卸去油缸上腔压力北京翻译公司。

电气部分

电器部分由主电路及控制电路组成, 主电路采用380V三相电压, 控制电路采用220V单相电压(由变压器供给), 断路器和热继电器对整个电路实行过载及短路保护, 交流接触器对电路实行欠压保护。控制电路由继电器、电接点压力表、保压时间继电器及控制按钮等组成上海翻译公司。

Hydraulic part.

The Hydraulic system consists of oil tank, oil pump, several hydraulic valves and oil cylinder. . Overflow valve acts as safety valve to control the maximum system pressure in order to prevent complete machine overload. This valve has been properly adjusted before leaving the factory. . Solenoid directional valve controls the up-and-down movement of upper pressure chamber. . Pilot controlled check valve is designed to prevent the pressure chamber from gliding down caused by self weight in static state and has the effect of balance supporting. . Solenoid ball valve is used to remove the pressure from upper chamber of oil cylinder..

Electric part.

The electric part consists of the main circuit and control circuit. The main circuit uses 380V three-phase voltage, and the control circuit uses 220V single-phase voltage (supplied by transformer). The breaker and thermal relay provide overload and short-circuit protection for the entire circuit; the AC contactor provides under-voltage protection for circuit. . The control circuit consists of the relay, electro connecting pressure gauge, dwell time relay and control button etc.