升降貨梯http://www.38jp.cn/防跌落裝置包括單向節流閥，右腔與單向節流閥的一端相連接，單向節流閥的另一端與儲液壓缸相連接，液壓油自右腔流向儲液壓缸時單向節流閥關閉，液壓油自儲液壓缸流向右腔時單向節流閥打開。
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.

升降貨梯防上升時，液壓油既可經電磁閥流向右腔，也可經單向節流閥流向右腔，減小阻力，從而減小升降機上升時的功耗。
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.

升降貨梯http://www.38jp.cn/下降時，液壓油不能經過單向節流閥，只能經過電磁閥，升降貨梯突然失電時防跌落裝置才能有效制動升降機下降。
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.