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Operation Taboo Of Wire Rope Electric Hoist
- Sep 06, 2018 -

It is well known that the wire rope electric hoist cannot be pulled up and hoisted at an Angle when operating the wire rope electric hoist, but the reality is always inversely proportional to the reality, because of various factors and common phenomena, such as the quality of construction personnel or the restrictions of objective conditions.Then, in case of this situation, electric hoist can easily cause damage, with light weight, make its line-drawer and steel wire rope be scrapped, and heavy weight, make the whole electric hoist be scrapped or physically injured, thus causing certain economic losses and seriously affecting the construction and production.

In view of the existing problems, a device which can prevent the slanting crane is designed in practical work. The device is to use the steel wire rope to generate a certain slanting Angle when the slanting crane is slanted to make the limit switch installed on the electric hoist work, so as to automatically disconnect the lifting contactor and limit the lifting function.The mechanical part of the device mainly consists of rope clip, 2 welding components and 1 limiting device.1 rope clip is welded at the lowest point of shell arc relative to the center point of balance wheel. The design principle considers that it can protect in any direction. Therefore, when designing component 2, its central hole is designed to be circular, so that the Angle of anti-skew slant crane in all directions is the same.The distance limit switch contact lever is adjusted according to the actual working conditions. If the Angle is needed to be increased, there are three methods: to enlarge the center hole of component 2;Lower the sensitivity of the limit switch;Working principle firstly, according to the actual working conditions, the appropriate Angle of the steel wire rope skewing is set. When the Angle of the steel wire rope is larger than the set value, the deflection of the steel wire rope is enough to make the central hole edge of component 2 touch the limit contact lever, causing the limit work.The height limit function of the device is that when the hoist is operated, if the breaker fails due to failure, and the driver's thoughts are not focused at this time, so that the hoist is constantly lifted.When the hook is close to the electric hoist, the hook is also close to the travel limit switch contact lever. If it continues to lift, it will make the contact lever offset or top, leading to ST disconnection. The hook also stops lifting and plays the height limit function.