How much effect does the sprinkler installed on the truck have on the brakes?

Installing sprinklers on trucks can prevent braking heat attenuation, especially for large-tonnage trucks, and trucks that often drive on mountain roads should also be equipped with retarders without braking sprinklers. Trucks without sprinklers or retarders can't drive in mountainous areas at all.

The braking device of freight car is a typical drum brake, which generates braking force through friction between friction plate and brake drum. Drum brake for freight cars has the characteristics of large friction area and strong braking ability.

However, the side effects are also outstanding. Friction can't avoid generating heat. The greater the vehicle load, the greater the braking force required, especially for fast-moving trucks. When braking, the brake pad rubs against the brake disc, so that huge kinetic energy is converted into heat energy and dissipated. Therefore, the higher the speed, the greater the load, the higher the pressure on the braking system, the kinetic energy can not be underestimated, and the heat generated can not be ignored. Take our car for example, after driving out and stepping on the brakes several times in a row, you may get burned when you get off the bus and touch the hub! This is a typical conversion from kinetic energy to thermal energy. There is no need to add a water spraying system to the braking system when driving normally on a flat road and the vehicle is not overloaded. Because driving in plain areas, the frequency of braking is not high, so the braking system does not need special cooling device.

If driving in mountainous areas, the braking system must be equipped with a radiator.

As long as the downhill slope in the mountainous area is particularly long and steep. flat area

A few hundred meters on the slope is considered as a big downhill, and the downhill in mountainous areas is counted as kilometers. So some road sections will have warning signs at the top of the slope to remind drivers to add water.

Once there is something wrong with the sprinkler system, or just the water tank is out of water, then the problem is quite serious!

When going downhill, the speed will get faster and faster under the action of inertia. If it is not controlled, the car will run faster and faster. At this time, the driver can't control the car. If the car is out of control, there may be a big accident. So when the car goes downhill, you must control the speed. You can use a low-gear engine to brake, you can start the exhaust brake to improve the braking force, you can start the hydraulic retarder to slow down, and you can use the brake to assist in slowing down. Among them, the deceleration effect of engine and exhaust braking is limited, and a large part of kinetic energy is finally dissolved by braking, so the braking pressure is very high.

If the slope is long, then you need to brake to control the speed. The brake system is used frequently, and the heat generated by friction cannot be dissipated. The higher the temperature, the tire will be ignited when it reaches the ignition point.

Therefore, we must pay attention to the heat dissipation of the brake system. Water spraying is the most efficient heat dissipation method, and no heat dissipation method is faster than direct water spraying!

The heat dissipation medium has wide sources, low cost, no need of recycling, and the whole device is very simple, easy to install and low cost.

Whether it is a pneumatic water spray device or a diaphragm pump water spray device, the principle is the same: water is sprayed directly on the brake basin and the side reducer housing with water pipes;

After the brake basin sprays water, the heat will be dissipated quickly, and the brake system will not fail due to thermal overload. The tires will not catch fire because of overheating, the vehicle will become controllable and the safety factor will be greatly improved!

However, water spraying also has some disadvantages, such as increasing the self-weight of vehicles and freezing the road in winter. Therefore, at present, most models begin to use hydraulic retarder to slow down, which is safer than water shower!