Braking noise test bench for high-speed train brake disc
A technology for noise testing and high-speed trains, applied in railway vehicle testing and other directions, can solve the problems of reducing noise, affecting passenger comfort, and noise pollution along the line, and achieving the effect of reducing braking noise
Inactive Publication Date: 2017-06-06
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0002] When a high-speed train is braking, the relative rotation of the brake disc and the brake pad produces braking noise, which affects the comfort of passengers and generates noise pollution along the line.
At present, noise pollution is mainly reduced by installing sound barriers along the line, and there are few ways to reduce noise by reducing noise sources.
In order to reduce brake noise from the source, it is necessary to use special test equipment to test and analyze the relationship between the material, structure, interface characteristics, train speed, load and other factors of the brake disc and brake pad and the noise, but so far there is no high-speed brake noise. Special test equipment for brake noise of train brake discs
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[0024] figure 1 Shown is a brake noise test bench for brake discs of high-speed trains. Its structural features are: a variable frequency motor 1 is installed on the left side of the base 20, and the output shaft of the variable frequency motor 1 passes through an electromagnetic clutch 2, a flywheel shaft 4, and a torque sensor in sequence. 5 is connected with the brake shaft 18; the right end of the brake shaft 18 is connected with the brake disc 6, the flywheel group 3 is fixed on the flywheel shaft 4, and the torque sensor 5 is fixed on the base 20 through the sensor base 19;
[0025] The right side of base 20 is equipped with slide table 14 that can move back and forth, and cylinder 13 is installed on the right side of slide table 14; The clamp 8 holding the brake pad 7 is connected; the middle part of the guide rod 10 is supported on the slide table 14 through the linear bearing 9; the side of the clamp 8 is equipped with a three-dimensional acceleration sensor 15;
[0...
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A brake noise test bench for brake discs of high-speed trains, which is composed of: the output shaft of the variable frequency motor on the left side of the base is connected to the brake shaft through an electromagnetic clutch, flywheel shaft, and torque sensor in sequence; the right end of the brake shaft is connected to the brake shaft. The flywheel group is fixed on the flywheel shaft; there is a sliding table on the right side of the base that can move back and forth, and the cylinder is installed on the right side of the sliding table; the output shaft at the left end of the cylinder passes through the spring, piezoelectric unidirectional force sensor, guide rod and clamping system in turn The clamp connection of the moving brake pad; the middle part of the guide rod is supported on the sliding table by a linear bearing; the three-dimensional acceleration sensor is installed on the side of the clamp; the left side of the brake pad is opposite to the right side of the brake disc; the sensing end of the sound sensor is located near the brake disc; The frequency conversion motor, electromagnetic clutch and cylinder are electrically connected with the control system. It can simulate the braking conditions of high-speed train brake discs, conduct brake noise tests, find out the relationship between braking conditions, braking materials and brake noise, and reduce the braking noise of high-speed train brake discs. Provide test basis.
Description
technical field [0001] The invention belongs to the technical field of brake noise testing of high-speed train brake discs. Background technique [0002] When a high-speed train is braking, the relative rotation of the brake disc and the brake pad produces braking noise, which affects the comfort of passengers and generates noise pollution along the line. At present, noise pollution is mainly reduced by installing sound barriers along the line, and there are few ways to reduce noise by reducing noise sources. In order to reduce brake noise from the source, it is necessary to use special test equipment to test and analyze the relationship between the material, structure, interface characteristics, train speed, load and other factors of the brake disc and brake pad and the noise. Special test equipment for brake noise of train brake discs. Contents of the invention [0003] The purpose of the present invention is to provide a brake noise test bench for brake discs of high-...
Claims
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IPC IPC(8): G01M17/08
Inventor 莫继良盖小红罗大兵黄清健陈光雄朱旻昊周仲荣
Owner SOUTHWEST JIAOTONG UNIV