液压升降机是通过电机驱动液压泵将液压油通过阀块、油管进入油缸，由油缸带动支杆或者链条、钢丝绳使工作台面做工作顺序。
Hydraulic lift is motor-driven hydraulic pump through the hydraulic oil through the valve block, tubing into the cylinder, the cylinder rod or chain drive, rope making countertops do the work order.

由于液压油本身的压缩比，液压元件的内泄漏，设备本身的升降间隙，当荷载作用在工作台面上时有一定的下沉量，当工作环境要求严格，要求工作台面在预定位置保持一定精度时，必须采取一定的措施：
Since the compression ratio of hydraulic oil itself, internal leakage of hydraulic components, the gap lifting device itself, when the load when a certain amount of subsidence in the work surface when the work environment is demanding accuracy requirements of the work surface at a predetermined position to maintain a certain , you must take certain measures:

1.提高液压元件的精度、在液压系统中设置液压锁、设置储能器进行液压补偿。
1 to improve the accuracy of hydraulic components, hydraulic lock set, setting the hydraulic accumulator be compensated in the hydraulic system.

2.设置特种导轨进行机械锁紧。
2 set of special rail mechanical lock.

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