How to solve the potential safety hazards caused by electric hoist?

Lightweight crane with electric hoist is a good tool for lifting goods, and its volume is relatively small, which is used in many enterprises. When the crane is finished or the  cargo needs to be suspended in the air, it will find that the cargo has  slipped. If the decline is serious, it will cause the goods to fall to the ground, resulting in damage to the goods. Serious will also damage people, resulting in safety accidents, so we should pay attention to the slippage of electric hoist crane.

 There are many reasons for the braking failure of electric hoist of light crane. It is quite common that the hoist has not been used for a long time, and in order to ensure  the use effect, the brake adjustment nut has been adjusted, resulting in too long brake distance. There is also the long-term use of electric hoist, resulting in serious wear and tear of the brake ring, friction decline, it can‘t very well enhance the pressure of the  brake spring. So when the hoist of light crane stops, the friction of the brake ring decreases, and the hoist will have too large sliding distance. When the slide occurs, you can take out the instructions and adjust the electric hoist  according to the required parameters. It should be noted that when adjusting, the electric hoist should be powered off, and can’t  be checked at work.

 But when we adjust the electric hoist, we find that the slippage of light crane still exists, so  we need to adjust it from other aspects. You can take the brake ring apart to  see if there is any oil in it. Oil pollution has good lubricity, it will  greatly reduce the friction of the brake ring, so when braking, because the  friction is not enough, it can‘t play a very good braking role, leading to the decline of goods. So we need to thoroughly clean the brake ring to ensure that the surface of the brake ring has enough friction.

 Above are the reasons for the slippage of the goods lifted by the hoist when the light crane is used. Of course, there are many other factors, which require us to carefully examine  the electric hoist, find out the reasons, and adjust. Only in this way can the  crane play a normal role and ensure the safety of use.

 After finding out the reason, we will tell you that there are several ways to completely solve the potential safety hazards of light cranes.

 1. Choose the right wire rope. In the process of crane operation, the existence of wire rope is very important. In order to make the lifting work smoothly, the alternately twisted wire rope is usually chosen; the wire rope wound on the pulley and drum needs to be contacted with the wire first. This kind of equipment must pay attention to its internal wire breakage when conducting wire rope inspection. Managing and operating personnel must operate accurately and safely according to the national standard rules of cranes. At the same time, in order to ensure the service life of the wire rope, the safety factor and tensile strength of  the wire rope should be correctly selected according to the working level of the mechanism and the users.

 2. Pay attention to the maintenance of equipment. The camber of the main girder and the deformation of its main parts should be carefully checked. At the same time, check all connection bolts, especially the connection bolts of the main girder and end girder, the electric conductive maintenance platform of the cart or other parts, and pay special attention to the situation that no loosening can occur. The running track of crane and trolley must be inspected regularly, and the track tightening should be paid attention to in time. The weld of track pressure plate can‘t crack.

 3. In order to ensure the safe and effective operation of equipment, some routine safety checks are also needed during operation. For example, to enhance the performance of height limiter, travel limiter switch and interlocking mechanism to ensure its safety and reliability. Every major component must also meet safety requirements. The hook hanger and pulley should not have obvious defects. The steel wire rope on the surface of electric hoist should be worn out and the corrosion must not exceed 40% of the diameter of the steel wire.