Reasons and Emergency Measures for Semi-trailer Brake Failure Reason

Reasons and emergency measures for semi-trailer brake failure
reason
1. Lack of necessary maintenance for the brake system, there are too many impurities in the brake master cylinder, the sealing is not strict, the vacuum booster pump fails, the brake oil is too dirty or the air resistance occurs after the mixed use of several brake oils and heating, the brake master cylinder or the sub-pump Oil leakage, gas tank or pipeline interface leakage;
2. The mechanism fails due to improper operation;
3. Due to severe overloading, under the action of gravitational acceleration, the inertia of vehicle motion is increased, which directly leads to brake failure.
measure
1. The semi-trailer should step on the brake when going down a long or steep slope, regardless of whether there is any condition. It can not only test the braking performance, but also gain time to control the speed of the vehicle when the brake fails, also known as predictive braking;
2. Control the direction according to the road conditions and speed, disengage the high-speed gear, and at the same time quickly smash the empty oil, and change the high-speed gear to the low-speed gear. In this way, there is a lot of traction resistance at the start time to quickly reduce the speed of the vehicle. In addition, when changing to a low gear, the handbrake should be used separately, but it should be noted that the handbrake cannot be pulled tight or pulled too slowly. If it is pulled too tightly, the brake disc will be easily "locked", which may damage the transmission parts and lose the braking ability; if it is pulled too slowly, the brake disc will be worn and ablated and the braking effect will be lost.
3. The bumpers, carriages and other rigid parts of the application car rub and collide with natural obstacles (rocks, trees or soil slopes) on the roadside, so as to achieve the purpose of forced parking and escape, and reduce accident losses as much as possible.
4. When the downhill brake fails and the vehicle's own mechanism cannot be used to control the speed of the vehicle, the driver should decisively use natural obstacles, such as rocks and trees on the roadside, to form resistance to the vehicle. If you can't find suitable terrain or objects to apply, in emergency situations, you can move one side of the body closer to the side of the mountain, increase the resistance with friction, and gradually reduce the speed.
5. When the semi-trailer goes uphill, the brake fails. It should be reduced to medium and low gears in a timely manner. Adhere to enough power to drive up the top of the slope to stop. Adhere to low gears, tighten the handbrake, and use stones, Skids etc. jam the wheel. If there is a backward slip, the rear of the car should face the hillside or the safe side, and turn on the headlights and emergency lights to attract the attention of the front and rear vehicles.