Jiaozuo brake

Brake disc thickness

The thickness of the brake disc has an impact on the quality of the brake disc and the temperature rise during operation. To reduce the mass, the thickness of the brake disc should not be too large; In order to reduce temperature, the thickness of the brake disc should not be too small. The brake disc can be made solid, or a ventilation hole can be cast in the middle of the brake disc for heat dissipation and ventilation. Generally, the thickness of solid brake discs can be taken as 10-20mm, while that of ventilated brake discs can be taken as 20-50mm. The commonly used thickness is 20-30mm. During emergency braking at high speeds, the brake disc will form thermal deformation and tremble. To improve the heat dissipation performance of the brake disc friction surface, most brake discs are made into ventilated brake discs with hollow holes in the middle, which can reduce the temperature of the brake disc by 20% to 30%.

Friction pad

Friction pad refers to the friction material pushed and squeezed onto the brake disc by the clamp piston. The friction pad is divided into friction material and base plate, which are directly pressed together.

The ratio of the outer radius of the friction pad to the inner radius and the recommended outer radius to the inner radius of the friction pad should not exceed 1.5. If this ratio is too high, there will be a significant difference in circumferential velocity between the outer edge and inner side of the pad during operation, resulting in uneven wear and reduced contact area, ultimately leading to a significant change in braking torque.

For the working area A of the disc brake pad, it is recommended to select the brake pad from 1.6 to 3.5 (kg/cm2) according to the vehicle mass per unit area of the brake pad.

The brake disc is made of alloy steel and fixed to the wheels, rotating with the wheels. The wheel cylinder is fixed on the bottom plate of the brake and remains stationary. The two friction plates on the brake caliper are installed on both sides of the brake disc. The piston of the wheel cylinder is subjected to hydraulic pressure from the oil pipe, pushing the friction plates towards the brake disc for frictional braking. The action is like using pliers to grip the rotating plate and force it to stop. Since the brake is a working device, it is also a safety device. With the development of technology and the increasing requirements for energy conservation and environmental protection, more and more permanent magnet synchronous gearless traction machines will replace traditional worm gear and worm type traction machines. It is uncertain whether there will be no need to install a separate upstream overspeed protection device. The brake of this type of permanent magnet synchronous gearless traction machine (which should undergo type testing) has an upstream overspeed protection function. According to the requirements of Article 9.10 of GB, the upward overspeed protection device of the car generally consists of two parts: a speed monitoring component and a deceleration execution component. For elevators, the brakes of permanent magnet synchronous gearless traction machines (all brake components involved in applying force to the brake wheels or discs are assembled in two as redundancy within these components) are precisely used as deceleration actuators to slow down or stop the elevator. Therefore, during the inspection, it is necessary to check whether the brake still has the type test certificate and report with uplink overspeed protection function, whether the brake is directly and rigidly connected to the traction wheel, and whether there should be an electrical device to verify whether the brake works normally, but it is not necessary to connect the brake to the safety circuit in series.

As a very important safety control device, it is widely used in lifting, metallurgy, mining, ports Main products in construction and other machinery include: electric hydraulic block brake series YWZB YWZ3B YWZ4B YWZ5 YWZ8 YWZ9 YWZ12 YWZ13 YW YWL TYWZ2 YWP electromagnetic block brake JZ (TJ2A) MW (Z) ZWZA ZWZ2 ZWZ3A DCW3 electromagnetic failure protection disc brake 5SE 561SE 560SE 56SE DCPZ12.7 4SE 3SE ST1SE ST2SE 450SE hydraulic failure protection disc brake 5SH 4SH 3SH 450SH ST1SH ST2SH SH ST3SH ST4SH SB (YQP) SBDST5SH ST10SH ST16SH ST25SH ST25SH-A ST40SH 904SH SBB electric hydraulic arm disk brake YPZ2 Ⅰ, Ⅱ, Ⅲ YPZ2 Ⅳ, Ⅴ, Ⅵ pneumatic caliper disk brake QP12.7 5SP 4SP 3SP 450SP PD ADP60M-ADP61M-ADP62M hydraulic direct acting disk brake DADH75 ADH60 ADH90 ADH120 DADH80 DADH90 DADH120 DADH103 DADH195 electric hydraulic thruster YT1 Ed explosion-proof electric hydraulic thruster BYT1 BED

Brake Factory

Braking performance is directly related to driving safety and is an important guarantee for car driving. With the rapid development of highways and the increasing density of traffic flow, frequent traffic accidents have occurred. Therefore, improving the braking performance of Automotive design is always the main task of automobile design, manufacturing and use departments. The function of the braking system is to slow down the car at an appropriate deceleration until it stops; When driving downhill, keep the car at an appropriate stable speed; Make the car reliably stop in place or on a slope. The braking system should have at least two independent braking devices, namely the service braking device and the parking braking device. The former is used to ensure that