Wheel tread profile concave grinding test scheme

Abstract

The utility model relates to a wheel tread profile concave grinding test scheme, which is used for accurately detecting the concave grinding degree of wheels of railway vehicles. The testing device comprises a support which is provided with a concave right-angle-shaped fillet structure matched with a wheel tread, and the support structurally comprises a measuring face opposite to the wheel tread and a transverse positioning face attached to the inner side face of the wheel tread. The bracket is positioned on the inner side surface of the wheel through the transverse magnetic sheet, so that the measuring head of the device can be ensured to be perpendicular to the wheel tread, and the measuring head is ensured to be within a certain range around the nominal radius circle of the wheel. A wheel tread profile concave grinding measuring mechanism is arranged in the measuring surface, the measuring mechanism is composed of an iron core of a springback displacement sensor and a measuring head, the measuring head falls on the tread during measurement, and an acquisition system reads data of each measuring point. Compared with the prior art, the device is simple in structure and high in measurement precision.

Description

Technical Field

[0001] This utility model relates to the field of railway vehicle wheel inspection technology, and in particular to a test scheme for wheel tread profile concavity wear. Background Technology

[0002] Wheel wear on railway vehicles affects train operation safety, causing instability, noise, and impacts. It also lowers the critical operating speed of locomotives and rolling stock, degrading vehicle dynamics, stability, and comfort. Whether in urban rail transit, low-floor trains, or high-speed trains, as passenger demands for comfort increase, there is an urgent need to ensure the stability and smoothness of high-speed train operation. Current measurement systems are too complex and expensive; therefore, a portable measuring device capable of accurately detecting the degree of wheel wear is needed. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology, such as complex structure and high price, and to provide a test scheme for wheel tread profile concave wear based on in-depth analysis of wheel and rail wear characteristics.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A wheel tread profile concavity wear test scheme includes a bracket, the bracket having an inwardly concave right-angled rounded corner structure that matches the wheel tread, the structure including a measuring surface opposite to the wheel tread and a transverse positioning surface that fits against the inner side of the wheel tread; a wheel tread profile concavity wear measuring mechanism is provided in the measuring surface.

[0006] As a preferred technical solution, the wheel tread profile concave wear measuring mechanism includes multiple pairs of interconnected measuring modules and measuring heads. The measuring modules are set inside the measuring surface of the bracket and one end penetrates through the bracket. The measuring head is set at the end of the measuring module that penetrates out of the measuring surface of the bracket.

[0007] As a preferred technical solution, the measurement module adopts a spring-loaded displacement sensor, which can extend and retract along the vertical direction of the wheel tread.

[0008] As a preferred technical solution, the measuring head is blade-shaped.

[0009] As a preferred technical solution, the bracket is equipped with a data acquisition card, which is connected to the wheel tread profile concavity and abrasion measuring mechanism for signal transmission.

[0010] As a preferred technical solution, the measuring surface of the bracket is fixedly connected to a vertical positioning column.

[0011] As a preferred technical solution, a transverse positioning magnet piece is provided on the transverse positioning surface that contacts the inner side of the tread surface.

[0012] As a preferred technical solution, the bracket is provided with a handle.

[0013] As a preferred technical solution, the outer surface of the bracket is provided with a button.

[0014] As a preferred technical solution, a display screen is provided on the outer surface of the bracket.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) The measuring mechanism in this utility model consists of the iron core of a spring-loaded displacement sensor and a measuring head. During measurement, the measuring head falls onto the tread surface, and the acquisition system reads the data from each point. It can directly obtain the concavity evaluation parameters reflecting wheel wear, with high measurement accuracy and simple structure.

[0017] 2) The wheel tread profile concave wear test device provided by this utility model is laterally positioned on the inner side of the wheel. A magnetic module is installed in the positioning surface to ensure that the measuring head of the device is perpendicular to the wheel tread and that the measuring head is within a certain range around the nominal radius circle of the wheel. Attached Figure Description

[0018] Figure 1 This is a front view of the wheel tread profile concave wear test scheme of this utility model;

[0019] Figure 2 This is a front sectional view of the wheel tread profile concave wear test scheme of this utility model;

[0020] Figure 3 This is a calibration diagram of the wheel tread profile concave wear test scheme of this utility model;

[0021] The attached diagram shows the following components: 1. Bracket; 2. Button; 3. Display screen; 4. Vertical positioning column; 5. Data acquisition card; 6. Measurement module; 7. Measurement head; 8. Lateral positioning magnet. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0025] Example 1

[0026] This utility model provides a test scheme for wheel tread profile concavity wear. For example... Figure 1 As shown, the wheel tread profile concavity and wear testing device provided by this utility model 1 is laterally positioned on the inner side of the wheel. A magnetic module is installed in the positioning surface to ensure that the measuring head of the device is perpendicular to the wheel tread and that the measuring head is within a certain range around the nominal radius circle of the wheel. The measuring mechanism consists of a spring-loaded displacement sensor measuring module 6 and a measuring head 7. During measurement, the measuring head 7 falls onto the tread, and the acquisition system reads data from each point, which can directly obtain the concavity evaluation parameters reflecting wheel concavity and wear. The device has high measurement accuracy and a simple structure.

[0027] like Figure 2 As shown, the track vehicle tread concavity measuring device includes a bracket 1, a button 2, a display screen 3, a vertical positioning column 4, a data acquisition card 5, a measuring module 6, a measuring head 7, and a lateral positioning magnet 8.

[0028] The bracket 1 is made of aluminum alloy and has a concave right-angled rounded corner structure. Its side has a lateral positioning surface that precisely fits the inner surface of the wheel tread, and it is sealed with a cover plate at the back. The side of the bracket 1 opposite the wheel tread surface is the measuring surface, which houses a measuring mechanism including 5 to 8 pairs of measuring modules 6 and measuring heads 7. The measuring modules 6 are located within the measuring surface and extend through the bracket 1 at one end. The measuring heads 7 are located at the end of the measuring modules 6 that extends out of the measuring surface of the bracket 1; they are blade-shaped and can extend and retract vertically to obtain the relative vertical distance at that point. The data acquisition card 5 is installed on the upper part of the measuring modules 6 and is connected to them via signal transmission. A vertical positioning device 4 is fixed to the bracket 1. The front of the bracket 1 has buttons 2 and a display screen 3, which allow input of measurement options and display of the measurement results.

[0029] During measurement, the lateral positioning magnet 8 is in close contact with the wheel back, while the vertical positioning post 4 is in contact with the outer side of the tread. The bracket contains a measuring mechanism; multiple measuring heads 7 in the measuring module extend and retract vertically to obtain the relative vertical distance at that point.

[0030] like Figure 3As shown, the rail vehicle tread concavity measuring device is calibrated using calibration block 9. First, the measuring device is placed on calibration block 9 for calibration, with each measuring head contacting the horizontal surface of calibration block 9 to obtain zero-point calibration data, which is displayed on display screen 3 and stored in data acquisition card 5. Then, the measuring device is placed on the wheel tread being measured, with the vertical positioning column 4 in contact with the tread and the lateral positioning magnet 8 in contact with the inner surface of the tread, forming a reliable positioning. The measuring mechanism 6 inside the bracket 1 simultaneously contacts the lowered tread, and the measurement results are displayed on display screen 3.

[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A wheel tread profile wear testing protocol, characterized by, The measuring device comprises a support (1) with a concave right-angle round structure matched with the tread surface of the wheel; The concave right-angle round structure comprises a measuring surface matched with the tread surface of the wheel and a transverse positioning surface matched with the inner side surface of the tread; the measuring surface is internally provided with a tread surface profile concave wear measuring mechanism; The measuring surface of the support (1) is fixed with a vertical positioning column (4); the transverse positioning surface is provided with a transverse positioning magnet sheet (8) in contact with the inner side surface of the tread; During measurement, the transverse positioning magnet sheet (8) is in close contact with the back of the wheel, and the vertical positioning column (4) is in contact with the outer side of the tread.

2. A wheel tread profile wear testing protocol according to claim 1 wherein, The tread surface profile concave wear measuring mechanism comprises a plurality of pairs of mutually connected measuring modules (6) and measuring heads (7); the measuring modules (6) are arranged in the measuring surface of the support (1) and penetrate the support (1) at one end; the measuring heads (7) are arranged at the end of the measuring modules (6) penetrating the measuring surface of the support (1).

3. A wheel tread profile wear testing protocol according to claim 2, wherein, The measuring module (6) adopts a rebound type displacement sensor and can be stretched and contracted along the vertical direction of the tread surface of the wheel.

4. A wheel tread profile wear testing protocol according to claim 2, wherein, The measuring head (7) is in the shape of a blade.

5. A wheel tread profile recession testing protocol according to claim 1 wherein, The support (1) is provided with a collection card (5) connected with the tread surface profile concave wear measuring mechanism.

6. A wheel tread profile recession testing protocol according to claim 1 wherein, The support (1) is provided with a handle.

7. A wheel tread profile recession testing protocol according to claim 1 wherein, The outer surface of the support (1) is provided with a button (2).

8. A wheel tread profile recession testing protocol according to claim 1 wherein, The outer surface of the support (1) is provided with a display screen (3).

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