The features and working principle of automatic arm adjustment

News source：web Release time：2022-07-14

I. after using the automatic arm adjustment, the vehicle has the following characteristics when driving:

1. Ensure that the wheel has a constant brake clearance and the brake is safe and reliable;

2. Short stroke of brake pump push rod, quick and reliable braking; Features of automatic arm adjustment for vehicles

3. The push rod of braking partial pump is always in the initial position before braking, ensuring the best braking torque;

4. Make the braking effect of all wheels consistent and stable;

5. Reduced the consumption of compressed air, and extended the life of air compressor, brake pump and other parts of compressed air system;

6. Reduce material consumption and extend the service life of brake parts;

7. Convenient installation and use, reducing the number of manual maintenance and improving economic benefits;

8. The regulating mechanism is enclosed in the shell and well protected, so as to avoid damp, dirt and collision.

Ii. Working principle of automatic arm adjustment:

The function of the automatic regulating arm should be to accurately record the increase in clearance caused by friction liner wear and to accurately adjust brake clearance to the normal working range.

1. Clearance Angle, corresponding to the normal clearance of brake drum and friction liner;

2. The excess clearance Angle corresponds to the increased clearance due to friction liner wear;

3. Elastic Angle, which corresponds to the elasticity caused by brake drum, friction liner, brake partial pump and braking system power transmission. When the clearance is adjusted automatically, the elastic Angle in the angular stroke should be avoided as far as possible. If there is no difference between the excessive clearance Angle and the elastic Angle, all of them will be compensated at any time, which will lead to overadjustment, leading to "dragging and grinding" or even "holding".