Defect detection device and method for train wheel tread

A technology for train wheel and defect detection, which is applied in the direction of measuring devices, wheel rim measurement/measurement, instruments, etc., can solve problems such as no measurement results, loss of measurement reference, and plate separation, etc., to improve measurement efficiency, structure optimization, and structural stability Improved effect

Pending Publication Date: 2019-03-08
马鞍山市雷狮轨道交通装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical application, this device has the following problems: when the train wheel is just in contact with the flat plate of the parallelogram mechanism in the train wheel tread abrasion and wear measurement unit, the wheel is likely to bring greater impact and vibration to the mechanism, causing the flat plate Instantaneous separation from the wheel rim, loss of measurement reference, resulting in missed and false measurements, affecting the accuracy of measurement
In addition, the device cannot control the plate height of the parallelogram mechanism in the train wheel tread abrasion and wear measurement unit. When the height of the wheel rim is different due to wear, there may be no contact or too much contact between the wheel rim and the plate. , resulting in no measurement results or a large impact on the mechanism that affects the measurement and even damages the mechanism

Method used

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  • Defect detection device and method for train wheel tread
  • Defect detection device and method for train wheel tread
  • Defect detection device and method for train wheel tread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] combine Figure 2-Figure 5 , a kind of device that is used for the defect detection of train wheel tread of the present embodiment, comprises movable plate installed on the inner side of track 1 along the length direction of track 1, fixed plate 4 and movable plate displacement sensing unit and movable plate balance mechanism, said The movable plate is connected to the fixed plate 4 through a slide rail mechanism and an elastic mechanism, wherein the movable plate displacement sensing unit includes an induction plate 1001 fixedly connected to the movable plate, and a displacement sensor 1002 fixedly installed above or below the induction plate 1001, or The installation positions of the two are interchanged. The above-mentioned slide rail mechanism is used to guide the movement of the movable plate, and the elastic mechanism is used to make the movable plate pressed down and moved upward to return to the original position when the wheels leave.

[0053] In this embodime...

Embodiment 2

[0058] A kind of device that is used for the defect detection of train wheel tread of this embodiment, its structure is basically the same as embodiment 1, and its difference mainly lies in: as Figure 8 , Figure 10 As shown, the movable plate balance mechanism of this embodiment includes a slider fixing plate 1403 and a swing rod 1404, wherein one end of the swing rod 1404 is connected to the movable plate in rotation, and the other end is connected to the slider fixing plate 1403 in rotation, and the slider fixing plate 1403, the movable plate and the swing rod 1404 together form a parallelogram mechanism. Specifically, both ends of the swing rod 1404 are equipped with bearings, which are rotationally connected with the movable plate and the slider fixed plate 1403 through bearing pins, and the slider fixed plate 1403 is slidably installed on the bottom plate 5 through a slide rail mechanism. The bottom plate 5 is compressed and fixed on the bottom of the track 1 . The sl...

Embodiment 3

[0061] A device for detecting defects of train wheel treads in this embodiment has basically the same structure as that in Embodiment 2, the main difference being that it also includes a lifting drive mechanism 9 for adjusting the height of the movable plate.

[0062] Because in actual use, the rim heights of all the wheels on a train will be different, and the movable plate will be higher than the wheel rim by a certain value as the preload during measurement. The preload value should not be too large, otherwise the wheel will It will seriously hit the movable plate, causing damage to the movable plate and reducing the measurement accuracy; the preload should not be too small, otherwise the wheel rim will not be able to press the movable plate, resulting in no data detection. In this embodiment, the initial height of the movable plate can be adjusted by setting the lifting drive mechanism 9, so as to meet the measurement requirements of wheels with different rim heights, reduc...

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Abstract

The invention discloses a defect detection device and method for a train wheel tread, and belongs to the technical field of train wheel detection. The detection device comprises a movable plate, a fixed plate, a movable plate displacement induction unit and a movable plate balancing mechanism distributed in the inner side of tracks along the length direction, the movable plate is connected with the fixed plate via a slide rail mechanism and an elastic mechanism, and the two ends of the movable plate are rotationally connected with the movable plate balancing mechanism. Thus, scratch, radial run-out and out-of-roundness of the train tire tread can be dynamically detected in real time in high-speed operation state of the train, the detection precision is higher, and the stability is high.

Description

technical field [0001] The invention belongs to the technical field of train wheel detection, and more specifically relates to a device and method for detecting defects of train wheel treads. Background technique [0002] The train wheel is one of the most important running parts of the rail transit vehicle, and the running state of the wheel set directly affects the driving safety of the train. During the operation of the train, with the high speed and heavy load, the wheel set of the train bears a large dynamic load, and the phenomenon of tread abrasion, peeling and out-of-round phenomenon easily occurs on the wheel tread. Wherein the tread refers to the outer circumference of the wheel in contact with the rail surface, which has a certain slope. The tread scratch is caused by the sliding of the wheel. When the wheel slides, the part of the wheel tread in contact with the rail becomes a fixed friction surface, which continues to rub against the rail to cause local plane w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/20G01B21/00G01N33/00B61K9/12
CPCG01B21/00G01B21/20G01N33/00B61K9/12
Inventor 贺子铭马开富
Owner 马鞍山市雷狮轨道交通装备有限公司
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