The anti-overspeed performance of the vehicle reducer is reflected by the unit braking energy of the test reducer. For the three-position reducer, the unit braking energy design of the reducer is h = 0.12 (m/m), and on rainy or oil-polluted wheels, the braking energy is reduced to 0.10 and 0.03 (m/m), respectively. If the unit braking energy of the decelerator installed with the brake beam in the new design can be guaranteed to be greater than the design value of the decelerator, the problem of overspeeding the trolley unit can be completely solved. The test method is to calculate the acceleration of the vehicle by controlling the radar speed curve of the system and calculate the unit braking energy.
By systematically analyzing the causes of overspeed and deceleration device braking noise of the scooper group, combining laboratory and field tests to test the oil sensitivity and noise reduction performance of the material, the composition, structure, structure and hardness of the test material are continuously changed. Finally, we successfully developed a decelerator anti-noise brake beam.
The anti-noise and noise reduction brake beam has low sensitivity to oil and water, and has obvious anti-super effect. The unit braking energy is high enough to meet the design requirements, and the safety of the shunting operation is effectively guaranteed.
Compared with the ordinary brake track, the noise reduction efficiency reaches 100%, of which more than 80% can reduce 20dB (decibels), the highest decibel number is distributed below the frequency of 2kHz, and the decibel number is not mutated at 0 to 10kHz and is no longer harsh The high-sound-pressure squeak noise greatly improves the noise environment around the marshalling yard and is conducive to the physical and mental health of the operators. In a period of overhaul, there is no need to replace the brake beam, and only the composite composite brake splint needs to be replaced. The total cost is low. And the splint is lightweight and easy to replace. Through the adjustment of the brake splint material composition, organization, structure and hardness, the purpose of the brake deceleration device inside the brake splint can be used for 5 to 8 years, the outer brake splint can be used for 3 to 5 years, to meet the requirements.
Auto parts are the various units that make up the entire car and a product that serves the car. There are many types of auto parts. With the improvement of people's living standards, people consume more and more cars, and the market for auto parts becomes larger and larger.
The classification of auto parts can generally be divided into: engine parts, power train parts, brake parts, steering parts, driving parts, ignition parts, fuel parts, cooling parts, lubrication parts, electrical instrumentation parts and body Accessories.
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