Regarding the causes and troubleshooting methods of brake failure in explosion-proof pneumatic hoists, the following is a specific analysis:

1、 Reasons for brake failure

Brake wear:

The brake tiles or discs of the brake may wear out after prolonged use, resulting in a decrease in braking force.

The pin shaft and shaft hole of the brake may also increase the idle stroke and decrease the effective stroke due to wear.

Improper adjustment of brake:

Improper adjustment of brake clearance may result in incomplete fit between brake pads and brake discs during braking, thereby affecting braking force.

A too small stroke of the brake solenoid may also cause brake failure, which is usually due to improper adjustment, such as only adjusting the pull rod without adjusting the upright rod.

Brake system contamination:

There may be pollutants such as oil and moisture inside the braking system, which can reduce braking performance.

Improper operation:

Operators may not follow the operating procedures when using explosion-proof pneumatic hoists, such as overloading, sudden braking, etc. These improper operations may accelerate brake wear and lead to brake failure.

Environmental factors:

Severe environments such as high temperature and humidity may lead to a decrease in the performance of brake materials, thereby affecting braking force.

2、 Troubleshooting methods

Check and replace worn parts:

Regularly check the wear of the brake and replace severely worn tiles or brake discs in a timely manner.

Check the wear of the pin shaft and shaft hole, and replace or repair them if necessary.

Adjust the brake clearance:

Adjust the clearance of the brake according to the manufacturer's recommended values to ensure that the brake tiles and brake discs can fully fit during braking.

Clean the braking system:

Regularly clean the interior of the brake system to remove pollutants such as oil and moisture.

Standardized operation:

Train operators to ensure they understand the correct operating methods for explosion-proof pneumatic hoists.

Strictly follow the operating procedures to avoid improper operations such as overloading and sudden braking.

Improving the working environment:

Whenever possible, improve the working environment and reduce the impact of harsh environments such as high temperature and humidity on the brake.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment