The second step; Brake line fixing screw. Brake pipe fixing screws are used to tighten the brake pipe and adjust the stroke of the brake handle. When adjusting the fixing screw of the brake pipe, loosen it slightly, not completely. If it is completely loosened, the brake line may separate.
The third step; Adjust the brake pipe fixing screw. Loosen the adjusting brake pipe screw. Pull the brake pipe slightly with 10 of wrench No.65438-12 (the wrench must be turned counterclockwise to loosen it), and loosen it for one to three turns.
The fourth step; Pull the brake line. After loosening the screw used to adjust the brake line, hold the brake line tightly with your right hand and pull it back a little.
The fifth step; Tighten the fixing screw of the brake pipe, tighten and adjust the brake pipe screw with the wrench 10 of the wrench 65438- 12 (turn the wrench clockwise when tightening), and then tighten. Do not tighten the screws.
Step six; Check whether the stroke of the brake handle is qualified. Hold the brake handle with the left hand and turn the rear wheel of the electric vehicle with the right hand. Just adjust the stroke of the brake handle within the normal range.
The seventh step; Check the stroke of the brake handle. The stroke is too small, the braking effect is good, but it consumes electricity. It is necessary to adjust the stroke of the brake handle. The stroke of the brake handle should be increased to the normal range.
The eighth step; Brake line fixing screw. Brake pipe fixing screws are used to tighten the brake pipe and adjust the stroke of the brake handle. When adjusting the fixing screw of the brake pipe, loosen it slightly, not completely. If it is completely loosened, the brake line may separate.
The ninth step; Adjust the brake pipe fixing screw. Loosen the adjusting brake pipe screw. Pull the brake pipe slightly with 10 of wrench No.65438-12 (the wrench must be turned counterclockwise to loosen it), and loosen it for one to three turns.
Step 10; After tightening the brake pipe and loosening the screw for adjusting the brake pipe, you should gently hold the brake handle with your left hand to let the brake pipe come back.
The eleventh step; Tighten the fixing screw of the brake pipe, tighten and adjust the brake pipe screw with the wrench 10 of the wrench 65438- 12 (turn the wrench clockwise when tightening), and then tighten. Do not tighten the screws.
Step12; Check whether the stroke of the brake handle is qualified. Hold the brake handle with the left hand and turn the rear wheel of the electric vehicle with the right hand. As long as the stroke of the brake handle is adjusted within the normal range.
The braking device generates friction between the brake pad and the wheel drum or disc. In the process of friction, the kinetic energy of the automobile is converted into heat energy and consumed. For a good car, a reliable braking device is essential. Manual braking devices have a history of centuries. /kloc-In the middle and late 20th century, people invented various dynamic braking devices, such as steam and air pneumatic braking devices, vacuum braking devices and hydraulic braking devices, which were used in trains and other vehicles.
Early cars generally used belt brakes or hoof brakes, and the brakes were all on the rear wheels of the car, which were mechanically connected to the joystick or pedal. 1904, Renouf obtained the patent right of front wheel brake. This brake was improved in Allen two years later, and 1909 was installed on aqel cars. After Ford put forward various interchangeable separate brake linings in 1900, various brake linings that can match steel brake wheels or cast iron brake wheels appeared soon. 1902, Renault invented the standard brake wheel, which has two articulated brake shoes and a cam to separate the two brake shoes. Since 19 19, Dewander et al. have obtained a series of patents on hydraulic auxiliary servo braking. In 1920, in order to make braking safer and more stable, Bendiks and others used double servo brakes in automobile braking devices. 1906 Dalac brakes have the same characteristics as contemporary brakes, and they are all made into various discs. In the later braking device, in order to increase its sensitivity and reliability, new technologies such as electronic sensing were adopted. This can ensure that the brakes can stop the fast-moving car in a very short moment.
Common types of braking devices:
1. drum brake: two semicircular brake pads are installed in the hub, and the brake pads are pushed by "lever principle" to make the brake pads contact with the inner surface of the wheel drum to generate friction.
Second, disc brake: use brake caliper to control two brake pads to clamp the brake disc on the wheel. When the brake pad clamps the brake disc, there will be friction between them.
When a car is driving on a slippery or icy road with low friction, if it is braked excessively, the wheels will be locked by the braking device, and the grip will be lost, resulting in the loss of the vehicle's ability to control the direction. In order to effectively control the direction of vehicles on this dangerous road, ABS "anti-lock braking system" was developed.
The ABS "anti-lock braking system" with increasingly strong performance can make TCS- traction control system "tracking control system" and VSC- vehicle stability control system (equivalent to ESP) control the tracking performance when the vehicle is driving and the stability performance when cornering.
Third, pneumatic brakes.
Basic structure: the braking device consists of three parts: transmission shaft, fixed hollow shaft and high elastic sealing rubber ring. Wherein a hollow shaft sleeve is fixed on the transmission shaft, a large gap is left between the hollow shaft sleeve and the transmission shaft, and a high-elasticity sealing rubber ring is installed in the gap. The inner ring of the rubber ring is always rigidly connected and fixed with the transmission shaft, and the outer ring is inlaid with several friction plates, leaving a certain gap with the inner diameter surface of the fixed hollow shaft.
Working principle: When high-pressure air is not filled in the high-elastic sealing ring, there is a gap between the friction plate on it and the inner diameter surface of the fixed hollow shaft, and the transmission shaft can rotate freely. When the high-elastic sealing rubber ring is inflated with high-pressure air, the rubber ring expands due to inflation, and its outer diameter becomes larger, so the gap between the rubber ring and the fixed hollow shaft disappears, and the friction plate and the fixed hollow shaft become rigid contact. At this time, the transmission shaft is "inflated" by the rubber ring in the fixed hollow shaft and stops driving, thus realizing the braking function. When the air pressure in the high elastic sealant ring is released, its inner diameter becomes smaller and the transmission shaft can rotate freely.