Jiaozuo brake

For heavy machinery like a gantry crane, the function of the brake is not to mention! We are here to explain the main categories and applications of gantry crane brakes!

According to different installation and operation situations, brakes are divided into three types: normally closed, normally open, and comprehensive. Generally, normally closed brakes are used. Normally closed brakes are closed during periods when the mechanism is not in operation. If you want the mechanism to work, you only need to release the brake to separate the friction pairs of the brake, and the mechanism can operate. According to the shape, it can be divided into block brake, belt brake, disc brake and cone brake.

The braking device is an important component to ensure the safe and normal operation of the crane. During lifting operations, the braking device is used to prevent objects or lifting arms from falling during suspension, and to prevent the turntable or crane from sliding under the action of wind or slope forces; Or reduce the speed of the running mechanism and then stop moving; It can also be operated by clamping heavy objects according to work needs; In special circumstances, the movement speed can be adjusted by controlling the balance between power and gravity.

The working mechanism of a crane should generally be equipped with a brake, and only in the following situations can a brake not be installed:

1. The mechanism is driven by a linear motion oil cylinder, and the locking oil circuit can stop the mechanism by the ground.

2. The manual operating mechanism of Overhead crane is not subject to wind force or ramp force component.

Gantry crane is a deformation of Overhead crane, also called gantry crane. Mainly used for loading and unloading operations of outdoor freight yards, stock yards, and bulk cargo. Gantry crane is widely used in port freight yard due to its high site utilization rate, wide operation range, wide adaptability and strong versatility. What are the reasons for the falling of objects from the gantry crane hook?

Gantry crane is a mechanical equipment used for loading and unloading operations, where the hook is an important component connecting the lifting mechanism of the gantry crane and the lifted object. Once there is a problem with the hook, it will cause the object to fall and cause serious accidents. Today we will talk about the reasons for the falling of objects suspended by hooks.

1、 Design not standardized

For example, the overload protection fails, the strength of the balance wheel axle is insufficient, there is no anti decoupling device, and the selection of lifting equipment and rigging is unreasonable; There are also issues such as failure to replace scrapped parts in a timely manner, lack of necessary safety protection, poor maintenance and faulty operation, resulting in uncontrolled movement, damage to parts or structures, and irregular safety performance inspections.

2、 Environmental factors

For example, engaging in lifting operations in environments such as high dust, high temperature, high humidity, low temperature, high noise, strong winds, and poor lighting can distract attention and directly affect the reaction ability and technical stability of operators, increasing the chances of misoperation and illegal operations, leading to accidents.

3、 Vulnerability in security management

Including the level of safety awareness of leaders; Implementation of crane management, inspection, and regular safety performance inspection; Safety education and training for relevant personnel; Special training for lifting operators, formulation of safety operation regulations for cranes, establishment of reward and punishment systems for violations, and emergency response plans for accidents, lack of effective monitoring and management of regular inspections of lifting equipment and lifting aids. Any negligence or inadequate safety management is one of the important reasons for gantry crane casualties.

Installation of brakes in the crane workshop