Electric hoist overload limiter works

Electric hoist overload limiter is one of important safety devices, such as weight lifting process over rated, then overload limiter will cut off the electric hoist lifting loop, the electric  chain Block  to stop heavy lifting, so as to protect operating personnel and equipment safety, the following for you to explain the working principle of overload limiter.

Overload limiter balancing hoist pulley mounted on the housing means and between the end plates, end plates electrically with one end of the housing to a positioning spindle and the stopper plate, positioning the spindle head equipped with an eccentric shaft extension bracket, balance one end of the pulley device hanging in the eccentric shaft extension bracket head, the eccentric bottom bracket with dowel pins, eccentric side of the bracket support plate, the upper loading a proximity switch, eccentric bracket overhang bracket with the eccentric shaft center positioning hole centers offset mandrel 3 mm. When lifting heavy overload, the eccentric bracket shell around the  lift hoist  side panel positioning mandrel rotates counterclockwise in to a preset distance proximity switches, proximity switches off the contactor line package lifting circuit, cutting off electric hoist lifting motor power, the electric hoist stops running, play overload limiting role in achieving the safe operation of the crane, improve the reliability and security.
Hoist overload limiter are one and split into two categories, such as the need to replace the overload limiter encounter such situations, to consider the electric hoist load, the case was Joseph wire rope electric hoist rope should also consider factors such as magnification and diameterload chain , to avoid overload limiter after the purchase can not be used without situation.