The invention relates to a method for preventing an electric hoist from being obliquely pulled and hoisted and belongs to the technical field of engineering machinery. The method is characterized in that angle iron is horizontally fixed to a steel wire rope on the fixed side of the electric hoist along the axial direction of a winding drum, a mercury switch is horizontally adhered to the angle iron through double faced adhesive tape, and the wiring end of the mercury switch is connected in series to a contactor coil in an electric hoist ascending control loop. When the electric hoist is pulledand hoisted obliquely in the axial direction, mercury in the mercury switch flows to the lower side after oblique pulling, at the moment, the mercury switch disconnects an ascending contactor solenoid wire, and the electric hoist stops ascending. When the electric hoist returns to be horizontal in the axial direction, the mercury is horizontally distributed in the mercury switch, the mercury conducts the two sides of the switch at the moment, and the electric hoist continues to rise. According to the method for preventing the electric hoist from being obliquely pulled and hoisted, the phenomenon that a rope guide device damages the winding drum and makes the winding drum deformed is avoided, and the hoisting safety is guaranteed.
防止电葫芦歪拉斜吊的方法,属于工程机械技术领域,其特征是将角铁沿卷筒轴向水平固定到电葫芦固定侧钢丝绳上,然后将水银开关用双面胶水平粘到角铁上,将水银开关接线端串联到电葫芦上升控制回路中的接触器线包上,当电葫芦发生轴向歪拉斜吊时,水银开关中的水银流向斜拉后低的一侧,此时水银开关将上升接触器线包线断开,电葫芦停止上升;当电葫芦轴向恢复水平后,水银水平分布在水银开关中,此时水银将开关两侧导通,电葫芦继续上升。本发明避免了导绳器损坏卷筒形变的现象发生,保障了吊运安全。
Method for preventing electric hoist from being obliquely pulled and hoisted
防止电葫芦歪拉斜吊的方法
2021-02-23
Patent
Electronic Resource
Chinese
IPC: | B66D Haspeln , CAPSTANS |
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