升降货梯http://www.jntr168.com/防跌落装置包括单向节流阀，右腔与单向节流阀的一端相连接，单向节流阀的另一端与储液压缸相连接，液压油自右腔流向储液压缸时单向节流阀关闭，液压油自储液压缸流向右腔时单向节流阀打开。
Cargo lifter anti-drop device includes a one-way throttle valve, one end of the chamber and the right way throttle valve is connected, the other end of the one-way throttle valve cylinder reservoir is connected from the right chamber to the hydraulic cylinder when the hydraulic oil reservoir way throttle valve is closed, the hydraulic oil flow from the time the storage cylinder chamber right way throttle open.

升降货梯防上升时，液压油既可经电磁阀流向右腔，也可经单向节流阀流向右腔，减小阻力，从而减小升降机上升时的功耗。
Anti cargo lifter rises, the hydraulic oil can flow through the valve chamber to the right, but also through a one-way flow restrictor right chamber, reduce drag, thereby reducing power consumption when the lift rises.

升降货梯http://www.jntr168.com/下降时，液压油不能经过单向节流阀，只能经过电磁阀，升降货梯突然失电时防跌落装置才能有效制动升降机下降。
When cargo lifter decline, hydraulic oil can not go through a one-way throttle, only through the solenoid valve, cargo lifter suddenly lost power when the anti-fall device in order to effectively lift the brake decline.