Reasons for brake failure of hand chain hoist

Causes of brake failure of hand chain hoists and troubleshooting methods

If the brake of the hand chain hoist fails when pulling tightly, it may be due to damage to key components in the braking system. The braking system consists of a ratchet, pawl, and friction plate. The integrity of these components is crucial to ensuring the braking function. When the ratchet has broken teeth, it cannot properly mesh with the pawl, causing the brake to fail. Similarly, if the pawl spring is loose, it will not be able to grasp the ratchet wheel in time, which will affect the braking. In addition, the condition of the friction plate surface cannot be ignored. If it is contaminated with water or grease, its friction will be reduced, thereby weakening the braking effect. Factors such as overloading of the hand chain hoist, deformation of the outer shell or wear and tear of the friction plate may also lead to brake failure.

To solve the problem of hand chain hoist brake failure, you first need to determine the specific cause of the failure. For example, if the problem is a rough ratchet caused by grease, simply remove the grease. For friction discs or other more complex faults, it is recommended to seek help from professional maintenance personnel and replace damaged parts if necessary. However, more important are preventive measures. Proper use and maintenance of a hand chain hoist can greatly reduce the risk of brake failure.

In order to avoid brake failure of the hand chain hoist, the following points should be noted during operation. First of all, following standardized operating procedures is the key to ensuring the normal operation of the chain hoist and extending its service life. Secondly, avoid overloading, because overloading will increase the friction between the pawl and the ratchet wheel, accelerate the wear of the friction plate, and thus affect the braking performance. Finally, arrange the use time of the hand chain hoist reasonably, avoid long-term continuous use, and give it an appropriate rest period to prevent the pawl spring and other parts from loosening due to excessive fatigue.