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Disc Brake Classification
Sep 12, 2017


The rotating element in the disc brake friction pair is a metal disc that operates on the end face and is called a brake disc. Its fixed element is a variety of structural types, generally can be divided into two categories.

One is the working area of the friction block and its metal backplane composed of brake pads, each brake has 2 to 4. These brake blocks and their actuators are mounted in a clamp-like bracket across the brake discs, collectively referred to as a caliper. This brake disc consisting of a brake disc and a brake caliper is called a chuck-type brake. The other metal plate and the friction plate of the fixed element are also disc-shaped, and all the working surfaces of the brake disc can be brought into contact with the friction plate at the same time, which is called a full brake. Clamp disc brakes used only as central brakes in the past, but were increasingly used by wheels and trucks at all levels as wheel brakes.


Full-scale brakes Only a few cars (mainly heavy-duty vehicles) are used as wheel brakes

 1, disc brakes. Disc brake disc brake friction element in the rotating element is the end of the work of the metal disc, known as the brake disc. Its fixed element is a variety of structural types, generally can be divided into two categories. One is the working area of the friction block and its metal backplane composed of brake pads, each brake has 2 to 4. These brake blocks and their actuators are mounted in a clamp-like bracket across the brake discs, collectively referred to as a caliper. This brake disc consisting of a brake disc and a brake caliper is called a chuck-type brake. The other metal plate and the friction plate of the fixed element are also disc-shaped, and all the working surfaces of the brake disc can be brought into contact with the friction plate at the same time, which is called a full brake. Clamp disc brakes have only been used as central brakes in the past, but are now increasingly being used as wheel brakes by cars and trucks at all levels. Full-scale brakes Only a few cars (mainly heavy-duty vehicles) are used as wheel brakes. Here only introduced clamp disc brakes. Clamp disc brakes can be divided into fixed chuck and floating clamp disc type two.


2, fixed clamp disc brakes. The brake caliper body 5 disposed on the brake disc 1 is fixedly mounted on the axle 6 so that it can not be rotated and can not move in the direction of the brake disc axis, and the two pistons 2 are located in two of the brake disc 1 side. Brake, the brake fluid from the brake master cylinder (brake master cylinder) through the inlet 4 into the clamp body in the two connected hydraulic chamber, the two sides of the brake block 3 to the wheel fixed connection Of the brake disc 1, thereby generating a brake. This brake has the following drawbacks: the cylinder is more, so that the brake caliper structure is complex; the cylinder is divided on both sides of the brake disc, must be across the brake disc clamp oil or external tubing to connect, which makes the brake The size of the clamp is too large to be installed in the rim of a modern car. When the heat load is large, the cylinder and the brake fluid in the tubing or oil path across the brake disc are susceptible to heat vaporization. Install a mechanical actuating parking brake caliper.


3, floating clamp disc brakes. The brake caliper 2 is connected to the axle 7 by a guide pin 6 and can be moved axially with respect to the brake disc 1. As shown in Fig. The brake caliper only sets the cylinder on the inside of the brake disc, and the outer brake block is attached to the clamp body. At the time of braking, the hydraulic oil enters the brake cylinder through the inlet port 5, urges the piston 4 and its friction block to the right and presses it against the brake disc and causes the cylinder to move left along the pin Move until the friction block on the right side of the brake disc is also pressed against the brake disc to hold the brake disc and brake it. In contrast to the fixed-caliper disc brake, the floating clamp disc brakes have smaller axial and radial dimensions and less chance of heating the brake fluid. In addition, the floating clamp disc brakes in the case of both traffic and parking brake, only in the vicinity of the driving brake calipers installed to promote the cylinder piston to drive the mechanical parts of the brake can be. Float clamp disc brakes gradually replace the fixed clamp disc brakes.


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