Jiaozuo brake

What to do if the crane's traveling brake fails

So, what can be done to better avoid the failure of the crane brake? Firstly, we need to understand why it malfunctioned?

The brake is one of the important equipment of a crane, which has the function of controlling the lifting object to rise and fall, and achieving parking.

The integrity of the brake is a guarantee for the safe production of the crane. During operation, the crane often experiences malfunctions such as brake failure.

The main reason is severe wear and tear of the brake; The main components of the brake are damaged or the spring is ineffective; The electromagnet is stuck or the armature and horizontal lever are detached.

Therefore, the preventive measures for the above fault causes include:

Regularly check whether the hinge is stuck or damaged; Whether the connections of each part are loose; Whether all rotating mechanisms are intact; Whether the hydraulic system is intact; Check if the brake wheels and belts are clean.

During the inspection, if any problems are found with the crane brake, it is prohibited to continue using it and effective measures are required to be taken in a timely manner.

Regular maintenance and lubrication of the brakes are also necessary to make reasonable and standardized adjustments. Ensure that the crane can operate safely. Two types of diagrams, YWZ4 and YWZ

What should be paid attention to when using electric hydraulic thrusters

1. The brake lining of the electric hydraulic thruster is a vulnerable component, and its usage limit should not be less than 0.8mm for the friction material part. Otherwise, the brake lining needs to be replaced.

2. When cleaning the vehicle, we must not use cotton wool to clean the surface of the brake disc, in order to avoid polluting the brake lining and causing brake performance failure.

3. The brake fluid of the electric hydraulic actuator in the reservoir should not be lower than the low limit. When adding brake fluid, it is necessary to pay attention to cleanliness, and dust and dirt should not be mixed into the reservoir to avoid blockage of the brake system and brake failure.

4. Electric hydraulic thrusters should regularly replace vulnerable parts to prevent rubber parts from aging, usually within 1-2 years.

5. During maintenance and upkeep of electric hydraulic thrusters, the tightening torque of fasteners should be checked at all times to prevent loosening.

Block brake is a brake that uses the cylindrical surface inside the brake pad assembly of an electric hydraulic actuator as the contact surface of the friction pair.

Block brakes are divided into short stroke block brakes and long stroke block brakes based on the length of the control device stroke

The magnet of the short stroke block brake is directly installed on the brake arm. During operation, the moving iron core rotates around the pin shaft to achieve brake release; When the magnet is powered off, it is tightly closed by the main spring. This type of brake has a compact structure, with fast tightening and releasing actions, but high impact force.

Structure and performance comparison of electro-hydraulic thrusters, brake high-tech research institute, electro-hydraulic thrusters are mainly used as block brakes, disk brake drive devices, and are widely used in the braking of various mechanical equipment such as cranes, belt conveyors, winches, etc. If the electric control and lever mechanism are used to make it realize the action of jacking, reciprocating, rocking and other forms of motion, it can also be used more, The current electric hydraulic thrusters produced in China, in addition to the YT type double rod series thrusters launched by Shanghai Crane Electrical Factory in the 1960s, there are also ED type single push rod series products imported from German EMC company by the original Jiaozuo Brake Factory in the 1980s. The hydraulic brake seat is equipped with a high-pressure oil inlet, a lubrication oil inlet, and a lubrication oil outlet. The new hydraulic brake seat is rotatably equipped with a spline shaft, which is connected to the dynamic friction plate spline, and the spacing between the dynamic and static friction plates is set;

The front end face of the piston is in contact with the static friction plate, the front end of the spring is pressed against the rear end face of the piston, and the rear end of the spring is pressed against the positioning plate. The positioning plate is connected to the brake seat through a snap ring, and the connection between the piston and the brake seat is equipped with a sealing ring.