Jiaozuo brake

Brakes can be divided into normally closed and normally open types based on their working status.

Normally closed brakes are often in a tight braking state by the action of springs or gravity, and when the mechanism is working, manual labor or brake release can be used to release the brakes.

Normally open brakes are often in a loose state and can only be tightened when external force is applied.

Brake usage:

YWZ, YWZ2, YWZ3, YWZ4, YWZ5, YWZ9 and other series of hydraulic block brakes are mainly used for mechanical braking of driving devices in lifting, transportation, metallurgy, mining, port, and construction machinery. They have the advantages of stable braking, safety and reliability, convenient maintenance, low power consumption, long service life, and no noise.

Due to the frequent combination of thrusters and brakes, this article comprehensively introduces their installation, use, and maintenance points: 1) When installing and fixing the brake, attention should be paid to whether the brake shoe is parallel to the brake wheel when the brake is released, and in the braking state, the entire surface of the brake band should be adhered to the brake wheel. The non parallelism and inclination in the released state should not exceed 0.1mm within the width of the brake wheel of 100mm. The working surface of the brake wheel must not have oil stains. 2) The brake is installed on the machine after installing the brake wheel. The brake wheel must be dynamically and statically balanced, and its surface roughness should not be lower than Ra1.6, and its hardness should not be lower than HB

The electric hydraulic brake is composed of electric motors, centrifugal pumps, oil cylinder pistons, and other components. When the mechanism is working, the electric motor 1 is energized, driving the centrifugal pump impeller 5 to rotate under the action of centrifugal force; The high-pressure oil is pumped out and flows into the lower chamber of piston 6, pushing the piston and push rod 2 to rise together. At this time, square shaft 3 rises along the shaft sleeve, and the brake release lever releases the brake.

The impeller of a centrifugal pump adopts radial blades, which can pump high-pressure oil to make the piston move regardless of the direction of current, i.e. the direction of motor rotation. When the mechanism is not working, electric motor 1 is powered off, the impeller stops rotating, the oil pressure in the lower chamber of the piston decreases, and the tension of the main spring causes the brake to close and brake. At the same time, the piston quickly resets under the gravity of the piston and push rod

Electric hydraulic block brakes are mainly used for mechanical braking of driving devices in lifting, transportation, metallurgy, mines, ports, and construction machinery. They have the advantages of smooth braking, safety and reliability, convenient maintenance, low power consumption, long service life, and no noise.

Usage conditions

Environmental temperature: -20 ℃~+50% using DB-25 hydraulic oil: below -20 ℃ using YH-10 aviation hydraulic oil, air relative humidity not exceeding 90%, generally used for three-phase AC power supply, 50HZ, 380V, sea level in accordance with GB755-87 standard

Brake composition:

The brake for cranes consists of brake pads, brake arms, brake wheels, and brake release devices. The brake wheel is often installed as a half body of the coupling on the rotating shaft of the mechanism. The symmetrically arranged brake arm is hinged with the fixed part of the frame, and the two brake pads with friction materials on the inner side are movable and hinged on the two brake arms. Under the action of the brake force on the brake release device, the paired brake pads compress the brake wheel radially and generate braking torque.

YWZE