Jiaozuo brake

Disc brake is a kind of brake that is realized by friction between discs. There are two types of disc brake: full disc brake and point disc brake. It is hydraulically controlled. Click to enlarge the picture. The main parts are brake disc, slave cylinder, brake caliper, oil pipe, etc. The brake disc is made of alloy steel and fixed to the wheels, rotating with the wheels

The fixed component is installed on the fixed component, and the brake disc is connected to the rotating component. When braking, the fixed component is pressed onto the brake disc, utilizing friction to achieve braking.

structure type 

The structure of fixed components in massage wipes can be divided into two types: clamp disc type and full disc type

1. The structural principle of the full disc brake: the rotating elements and fixed elements of the friction pair in the full disc brake are both disc shaped. When braking, the friction surfaces of the two discs are in full contact, and the working principle is like a friction clutch.

2. The structure principle of the caliper disc brake: the fixed element of the caliper disc brake is the brake pad, which is installed in the brake caliper that is connected with the axle and cannot rotate around the axle axis. The contact area between the brake pad and the brake disc is very small. Fixed clamp type

Structural features: The brake caliper does not move, and there are hydraulic cylinders on both sides of the brake disc

Performance characteristics: There are no sliding parts except for pistons and brake pads, with good stiffness and easy manufacturing. It can adapt to different circuit driving requirements, but it is large in size, difficult to arrange, and generates a lot of heat

Sliding clamp type

Structural features: The brake caliper can perform axial sliding, and there is a hydraulic cylinder on the inner side of the brake disc

Swing clamp type

1 arm disc YPZ mesh structure features: the brake caliper is hinged with the fixed seat, and there is a hydraulic cylinder on the inner side of the brake disc

1. Advantages

Good thermal stability, while drum brakes exhibit mechanical decay

Good water stability, mud and water are easily thrown away from the brake disc

The braking torque is independent of the direction of motion

Easy to construct dual circuit system, reliable and safe

Small size, low quality, and good heat dissipation

Uniform pressure distribution and uniform pad wear

Replacing the pads is simple and easy

2 Disadvantages

Difficult to prevent debris from getting onto the work surface

When used as a parking brake, the driving mechanism is complex

Booster needs to be installed in the brake drive mechanism

The pad has a small working area, fast wear, and low lifespan.

Short braking coordination time

Easy to achieve automatic gap adjustment

SBD250 overhaul

1. Use a dial gauge to detect that the cross-sectional runout error of the brake disc is greater than 0.06mm. The surface of the brake disc has obvious wear steps and strained grooves, which can be processed and repaired

2. Check that the wear limit thickness of the brake disc is 8mm. If the thickness exceeds the limit, replace it with a new one

When the thickness of the brake shoe friction plate is less than 7mm (including the bottom plate), the friction plate must be replaced, and the left and right wheels must be replaced in sets (4 friction plates, 4 spring plates)

4. Check the brake caliper body. If any oil leakage is found, replace it with a new piston sealing ring