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Device and method for on-line dynamically measuring train wheel geometrical parameters

A technology for train wheels and geometric parameters, which is applied to measuring devices, electromagnetic measuring devices, and electrical devices, etc., can solve problems such as distortion and deviation of the diameter of the rim vertex circle, and achieve the advantages of small error, high measurement accuracy, and improved measurement efficiency. Effect

Active Publication Date: 2018-11-16
马鞍山市雷狮轨道交通装备有限公司
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Problems solved by technology

Since this method regards the speed as known, in the process of restoring the value of the lowest point of the wheel rim at different times to the coordinate value at the same time, due to the deviation of the speed, the restored coordinate value is distorted, which eventually leads to The diameter of the rim apex circle has a large deviation

Method used

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  • Device and method for on-line dynamically measuring train wheel geometrical parameters
  • Device and method for on-line dynamically measuring train wheel geometrical parameters
  • Device and method for on-line dynamically measuring train wheel geometrical parameters

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Embodiment 1

[0047] Such as figure 1 As shown, a kind of device for the on-line dynamic measurement of train wheel geometric parameters of the present embodiment comprises a speed measuring sensor 1, a start switch 2, an eddy current displacement sensor 13, an eddy current sensor 1 arranged on the inner side of the track 9 along the direction of train travel. Displacement sensor II 4, laser displacement sensor I5, laser displacement sensor II6 and stop switch 8, wherein the connection line between the center of eddy current displacement sensor I3 and eddy current displacement sensor II4 is parallel to the top surface of the track, laser displacement sensor I5 and laser displacement sensor II6 The detection beams of the laser displacement sensor II6 are perpendicular to the inner rim surface of the wheel 10, and there is an angle α between the detection beam of the laser displacement sensor I5 and the top surface of the track, and the detection beam of the laser displacement sensor II6 is pe...

Embodiment 2

[0069]The structure and measurement method of the measuring device in this embodiment are the same as those in Embodiment 1, the main difference being that the distance d between the wheel diameter measurement base point and the inner rim surface of the wheel in this embodiment is 70 mm.

Embodiment 3

[0071] The structure of the measuring device and the measuring method in this embodiment are the same as in Embodiment 1, the difference mainly lies in: the diameter D corresponding to the measuring base point of the rim thickness in this embodiment h =D T +20.

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Abstract

The invention discloses a device and method for on-line dynamically measuring train wheel geometrical parameters, and belongs to the technical field of train wheel parameter measurement. The device for on-line dynamically measuring the train wheel geometrical parameters comprises a speed measurement sensor, a starting switch, two electrical eddy current displacement sensors, two laser displacementsensors and a stop switch arranged in the inner side of a track in the train running direction in sequence, wherein detection light beams of the laser displacement sensor I and the laser displacementsensor II are perpendicular to inner rim surfaces of wheels, an inclined angle alpha exists between the detection light beam of the laser displacement sensor I and a track top surface, and the detection light beam of the laser displacement sensor II is perpendicular to the track top surface. By adopting the device and the method, the train wheel geometrical parameters can be measured on-line dynamically, and the measurement accuracy is higher, the speed is fast, and the measurement range is large.

Description

technical field [0001] The invention belongs to the technical field of train wheel parameter measurement, and more specifically relates to a device and method for online dynamic measurement of train wheel geometric parameters. Background technique [0002] The train wheel is one of the most important running parts of the rail transit train, which carries all the dynamic and static loads of the train. However, during the operation of the train, due to the long-term friction between the wheel and the track, it will cause different degrees of wear to the wheel, such as diameter wear, rim wear and so on. Diameter wear will cause the diameter difference of the same vehicle or the same frame or the same pair of wheels to exceed the limit, and the height of the rim will increase. The eccentric wear of the rim will cause the thickness of the rim to decrease and the comprehensive value of the rim to decrease. Driving safety poses a great threat. Therefore, the diameter (D T ), rim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/12G01B7/12G01B11/10
CPCB61K9/12G01B7/125G01B11/10
Inventor 贺子铭徐见马开富
Owner 马鞍山市雷狮轨道交通装备有限公司
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