液压泵是升降货梯的核心部件，是非常重要的一个组成部分。下面济南天锐升降机械的有关技术人员就给大家介绍一下升降货梯的液压泵是如何工作的？

在液压泵站中，液压油由叶片泵形成一定的压力，经滤油器、隔爆型电磁换向阀、节流阀、液控单向阀、平衡阀进入液缸下端，使液缸的活塞向上运动，提升重物，液缸上端回油经隔爆型电磁换向阀回到油箱，其额定压力通过溢流液压升降机阀进行调整，通过压力表观察压力表读数值。 
Hydraulic pump station, hydraulic oil is formed by the vane pump a certain pressure, the oil filter, explosion-proof solenoid valve, throttle valve, check valve, balance valve into the lower end of the hydraulic cylinder, the liquid cylinder the piston moves upward, lifting heavy objects, the upper end of the hydraulic cylinder return oil through flameproof solenoid valve to the tank, the rated pressure is adjusted by hydraulic lifts overflow valve, pressure gauge readings observed by the pressure gauge.
　
升降货梯液压泵油缸中的活塞向下运动(既重物下降)。液压油经防爆型电磁换向阀进入液缸上端，液缸下端回油经平衡阀、液控单向阀、节流阀、隔爆型电磁换向阀回到油箱。液压升降机为使重物下降平稳，制动安全可靠，在回油路上设置平衡阀，平衡回路、保持压力，使下降速度不受重物而变化,由节流阀调节流量，控制升降速度。为使制动安全可靠，防止意外，增加液控单向阀，即液压锁，保证在液压管线意外爆裂时能安全自锁。安装了超载声控报警器,用以区别超载或设备故障。
Cargo lifter hydraulic cylinder piston downward movement (both heavy falls). Hydraulic oil through explosion-proof solenoid valve into the cylinder upper end, a lower end of the hydraulic cylinder oil return by balancing valve, check valve, throttle valve, explosion-proof solenoid valve to the tank. Hydraulic lift heavy objects fall to make a smooth, safe and reliable braking, set balancing valve, balancing loop back to the oil on the road, keep pressure on the rate of decline from the weight change, the throttle valve regulates the flow control lifting speed. To enable safe and reliable braking to prevent accidents, increase the check valve, namely hydraulic lock, ensure that when an unexpected burst hydraulic line can be safely self-locking. Overload voice alarm installed to distinguish overloaded or equipment failure.
   
升降货梯液压泵电器控制系统通过防爆按钮SB1—SB6来控制电机的转动，隔爆型电磁换向阀的换向，以保持载荷提升或下降，且通过“LOGO”程序调整时间延迟量，升降台避免电机频繁起动而影响使用寿命。
Cargo lifter pump electrical control system through the explosion-proof button SB1-SB6 to control the rotation, explosion-proof solenoid valve motor commutation, in order to maintain the load raised or lowered, and by "LOGO" program to adjust the time delay amount, lifts avoid frequent starting and affect the life of the motor.

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