The sudden failure of brakes on chain electric hoists (also known as chain hoists or chain hoists) may be caused by various factors. Here are some common reasons and their explanations:

Wear or damage of mechanical components:

Coupling damage: As a key component connecting the motor and brake system, if the coupling is damaged, it may cause brake failure or insensitivity.

Spring failure or loose nut: If the spring in the brake system is damaged or the nut is loose, it can cause excessive spacing between the friction plates, thereby affecting the braking effect.

Internal issues with brakes: Electric hoists that have not been used for a long time may have their brakes malfunction due to rust or corrosion, especially during sudden use where the brakes may not open.

Electrical system issues:

Circuit failure: Damage or looseness of electrical components such as main cables, plugs, switches, etc. may cause poor current transmission, thereby affecting the normal operation of the brake system.

Fuse blown: Fuses are important protective components in electrical systems. Once blown, it will cause the entire electrical system or brake system to malfunction.

Environmental factors:

Damp or corrosive environment: Electric hoists used in damp or corrosive environments are prone to damage to their electrical and mechanical components, increasing the risk of brake failure.

Extreme temperature: Excessive or insufficient temperature may also affect the performance of the electric hoist brake system.

Improper operation or insufficient maintenance:

Overloading use: Long term overloading of electric hoists can accelerate the wear and aging of their mechanical components, reducing the reliability of the braking system.

Lack of maintenance: Regular maintenance and upkeep of electric hoists are key to ensuring their normal operation. If not maintained properly, it may cause the brake system to fail due to wear, looseness, or corrosion.

The following measures can be taken to investigate and solve the problem of sudden brake failure in chain electric hoists:

Check the electrical system: First, check whether the main cables, plugs, switches, and other electrical components are intact to ensure that the circuit is unobstructed. At the same time, check if the fuse is blown and replace it promptly if necessary.

Inspect mechanical components: Check for damage or looseness of mechanical components such as couplings, springs, nuts, etc., and perform necessary repairs or replacements. Pay special attention to the condition of the brake to ensure that it can function properly.

Cleaning and lubrication: Regularly clean the external and internal components of the electric hoist to remove dust and dirt. Simultaneously lubricate key components to reduce friction and wear.

Avoid overloading: Strictly operate the electric hoist according to its rated load to avoid overloading and extend its service life.

Strengthen maintenance and management: Establish a regular maintenance and inspection system to ensure that the electric hoist is always in good working condition. At the same time, strengthen the training and management of operators to enhance their safety awareness and operational skills.

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