Device and method for on-line dynamic measurement of geometric parameters of wheels of train

A technology of train wheels and geometric parameters, applied in the direction of rim measurement/measurement, etc., can solve the problems of distortion, rim vertex circle diameter deviation, etc.

Active Publication Date: 2018-10-12
马鞍山市雷狮轨道交通装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 dynamic measurement of geometric parameters of wheels of train
  • Device and method for on-line dynamic measurement of geometric parameters of wheels of train
  • Device and method for on-line dynamic measurement of geometric parameters of wheels of train

Examples

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Effect test

Embodiment 1

[0081] Such as figure 1 As shown, a kind of device for online dynamic measurement of the geometric parameters of train wheels in this embodiment includes a speed measuring sensor 1, a start switch 2, an eddy current displacement sensor 13, an eddy current displacement sensor 1 arranged on the inner side of the track along the direction of train travel. Sensor II 4, laser displacement sensor I 5, laser displacement sensor II 6, and stop switch 8, wherein the detection beam of laser displacement sensor I 5 is perpendicular to the inner rim surface of the wheel, and there is an angle α between it and the top surface of the track. The detection beam of the displacement sensor II 6 is perpendicular to the inner rim surface of the wheel, and there is an angle β with the top surface of the track; the line connecting the centers of the eddy current displacement sensor I3 and the center of the eddy current displacement sensor II4 is parallel to the top surface of the track. Both the ed...

Embodiment 2

[0105] Such as Figure 2-4As shown, a device for online dynamic measurement of the geometric parameters of train wheels in this embodiment has a structure basically the same as in Embodiment 1, the difference mainly being that in this embodiment, the laser displacement sensor II6 is installed on the track through the second bracket 9 The outer side, and there is an inclined angle β between the detection beam and the top surface of the track, and an inclined angle γ between the inner rim surface of the wheel; a displacement sensor III 10 is also installed on the first bracket 7, and a displacement sensor III 10 It is used to measure the amount of depression when the first bracket 7 is pressed down by the wheel rim, and its sampling frequency is the same as that of the two laser displacement sensors, and the displacement sensor III 10 is connected to the control system and the data processing system.

[0106] combine Figure 2-Figure 5 , a method for online dynamic measurement ...

Embodiment 3

[0133] The structure and measurement method of the measuring device in this embodiment are the same as those in Embodiment 1 or 2, 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 70mm.

[0134] Example 3

[0135] The structure of the measuring device and the measuring method in this embodiment are the same as in Embodiment 1 or 2, the difference mainly lies in: the diameter D corresponding to the base point of measuring the thickness of the rim in this embodiment h =D T +20.

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Abstract

The invention discloses a device and method for on-line dynamic measurement of geometric parameters of wheels of a train, and belongs to the technical field of wheel parameter measurement. The devicefor on-line dynamic measurement of the geometric parameters of the wheels of the train comprises a speed-measuring sensor, a starting switch, an eddy current displacement sensor I, an eddy current displacement sensor II, a laser displacement sensor I and a stopping switch which are sequentially arranged on the inner side of a track in the travelling direction of the train. The device further comprises a laser displacement sensor II. A probing light beam of the laser displacement sensor I is perpendicular to the inner rim surfaces of the wheels, and an inclined included angle alpha is formed between the probing light beam of the laser displacement sensor I and the top surface of the track. The included angle beta is formed between a probing light beam of the laser displacement sensor II andthe top surface, parallel to the probing light beam of the laser displacement sensor II, of the track. By adopting the device and method for on-line dynamic measurement of the geometric parameters ofthe wheels of the train, the geometric parameters of the wheels of the train can be subjected to on-line dynamic measurement, the measurement precision is high, the speed is high, and the measurementrange 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): B61K9/12
CPCB61K9/12
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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