The two-speed electric hoist overload device

Two-speed electric lift hoist  housing end plate at one end with a positioning mandrel and the stopper plate, positioning the mandrel head fitted with an eccentric shaft extension bracket, balance pulley device at one end hanging in the eccentric shaft extension bracket head, in the lower bracket with the eccentric pin, the eccentric side of the bracket is provided with a supporting plate, the support plate section be equipped with a proximity switch, the eccentric shaft extension bracket and the eccentric head center bracket hole centers offset positioning mandrel 3 mm.


Countries in this year's increase in the use of special equipment installation of the new requirements, all fully installed two-speed electric  lever hoist  electric hoist overload limiter overload limiter, balanced pulleys mounted electric hoist electric hoist housing unit and between the end plates.
When lifting heavy gauge, eccentric bracket shell around the 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  Rope hoist  lifting motor power, so two-speed electric hoist stops running, play overload limiting role in achieving the safe operation of the crane, improve the reliability and security.