Brake stand for cars. Brake system stand

How to check the car's brakes? In order to analyze the state of the braking system, two methods are used: road and bench. In this article we will talk about the bench method. The benchmark method controls the following parameters:

• Coefficient of relative unevenness;
• Total specific braking power;
• Asynchronous operation of the drive.

Today, in the world of modern technology, there are quite a few varieties of brake system stands. Consider the main ones.

Characteristic

The brake stand for cars is a device placed on the SRT, the main purpose of which is to check the effectiveness of the system. The efficiency of the equipment is aimed at simulating an asphalt coating, at which all necessary indications will be removed when the vehicle brakes. The stand of the brake system can take the form of both stand-alone equipment and enter the general diagnostic system. This equipment is applicable for passenger cars weighing up to 3.5 tons.

What is it?

The brake stand is a kind of platform, which is located almost at the floor level in the car repair shop. The mechanical part is located below it. The display with the required test readings is a visible part of the equipment.

How does he work?

Passenger cars are transported by the first pair of wheels on special rollers simulating the road surface. Rollers are directly proportional to the electromonitor and sensors, which record the required indications:

1. Force-measuring force.

2. Frequency of rotation.

3. Indication of the braking torque.

These readings are read and analyzed by a specialist, as a result of which certain conclusions are drawn. In addition, there is equipment in the memory of which the optimal braking distances are provided. In this case, the data on the sensor panel will be displayed, which corresponds to the indicated indicators. The operation of the sensors is based on hydraulics, it is checked by the following method: a brake fluid or an oil with a low viscosity is poured into it. A reduced viscosity index is necessary in order for the equipment to work with minimal deviations at minus temperatures. It should be noted that fluctuations in errors can be about 3%, and the speed of rotation of the rollers - no more than 10%.

As it was mentioned before, the car drives the wheels onto the brake stand, due to which the engine starts rotating the rollers. As a result of this action, the rotation of the wheels starts, which simulates the movement of the car along the usual road. After a while, the gas pedal is depressed and the machine starts to stop. It is this reactive force moment that is recorded by the sensors. In this case, each pair of wheels transmits its signal to the sensor. Further, the operator analyzes the signals and determines the uniformity of braking with each wheel.

Error

Of course, there are certain permissible discrepancies on each wheel. They are necessarily accounted for by the operator. In case they go beyond all necessary norms - the system immediately notifies about this fact. Analogously, the analysis of the braking distance is carried out by the next pair of wheels. For all-wheel drive cars, there are other stands, which take into account the speed of the wheels in different directions. It should be noted that the brake stand is capable of measuring the braking distance not only by foot method, but also by hand.

In some varieties of stands, it is possible to determine the force of pressing the pedal. In this case, the information on the monitor will be displayed as graphic pictures. As the equipment is quite serious and it is intended mainly for SRT and serious enterprises, then the cost is corresponding to it. On the brake stand the price ranges from 500 thousand rubles. Up to 900 thousand rubles. It all depends on the country of the manufacturer and the technical capabilities of the stand.

Roller brake stands

Provide the ability to obtain the most accurate data on the operation of these systems. When testing the car on roller stands, the entire surface of the wheel braking is examined.

Benefits:

• security. This is due to the fact that during the tests, the kinetic energy of the given auto is zero;
• Are the most suitable for use in service stations.

The parameters defined by the equipment are also displayed. They can be both digital and graphic. To judge what information is more difficult, because each of them has its own error. It should be noted that the graphical output of information allows you to determine the difference in the braking force of the left and right wheels. This provides an opportunity to give an opinion about the state of the brake system.

Stand for grooving discs

This equipment is designed to restore brake discs without dismantling. Advantages of the stand for the grooving of brake discs:

• Fast work execution. The maximum time spent on turning one disc is 15 minutes.
• Easy to work with. A person can work on the equipment without special training.
• The end result says that the equipment works perfectly, because the disk looks like a new one.
• After replacement, the wear of the new shoes is markedly reduced.
• The effect of idle braking is minimized, which avoids unpleasant situations on the way.
• In force majeure, the stopping distance decreases.

Features of work:

• Suitable for passenger transport;
• Simultaneous processing of disks on both sides;
• Constant monitoring of operation;
• Not necessarily the availability of qualifications from the employee;
• No mileage is necessary after grinding discs: they are fully ready for efficient operation;
• Minimization of the stopping distance;
• Elimination of undesirable effects in the form of fastening and gnashing;
• Minimization of steering vibration.

Recommendations for work:

1. When grooving the discs, it is advisable to replace the pads.

2. In the event that there was a repeated replacement of the pads, it is not advisable to hold the groove due to the high wear of the discs.

3. When the thickness of the discs is reduced, a complete replacement is necessary.

Roughing and brake stand

Its main purpose is to test engines of different power. The stand is equipped with a measuring system, which during the tests allows to register all necessary parameters, as well as to provide test results in the form of a printed protocol. In addition, the test information will automatically be transferred to the computer's memory.

Measurement of the required parameters, as in the previous stands, is carried out using sensors that have an electrical signal. All signals come to the computer, which the operator observes. It is he who will give an opinion about the engine's operation.

What parameters are controlled by the brake-brake stand?

It should be noted several of them:

• Consumption of fuel.
• Crankshaft speed.
• Torque on the shaft of ICE.

The rolling-brake stand consists of:

1. The rheostat.
2. Electrical cabinet.
3. Stoic.
4. Buck with fuel.
5. Weighing equipment.
6. Electrodynamometer.

For today, the production of wheel-brake booths is rather limited, while every positive-proven company is equipped with this equipment, since running-in engine after repair provides the car with the ability to acquire a second life. At the same time its resource equals 80%. From this it follows that a rolling-brake stand is necessary for every auto enterprise.

Conclusion

From the foregoing it follows that it is not necessary to be an avid motorist, in order to understand that you can not go far without a brake. Therefore, the importance of the described equipment is not to be minimized. It should be remembered that the degree of protection of the driver and passengers depends on the efficiency and quality, the operability of this system. Thanks to these stands, you have the opportunity to assess the performance of your brake system as much as possible. In most cases, the passage of the stand is part of the diagnosis of the vehicle. But depending on your desire, it can be used and autonomously.

So, we found out what the stand is for the groove of brake discs of a vehicle and what it is used for.