Testing device for profile collapse degree of high-speed railway steel rail

Abstract

The utility model relates to a testing device for the profile collapse degree of a high-speed railway steel rail, which is used for accurately detecting the collapse type abrasion degree of a steel rail head and belongs to the field of profile detection of the railway steel rail head. The testing device comprises a support which is matched with a rail head of a steel rail and is of a concave right-angle-shaped fillet structure, the support makes contact with the non-working face of the outer side of the steel rail in an attached mode through a transverse positioning magnet and makes contact with a lower jaw of the steel rail in an attached mode through a vertical positioning magnet, reliable positioning is formed, and it is guaranteed that a measuring head is located within a certain range around a steel rail light band. The measuring mechanism is composed of an iron core of a springback displacement sensor and a measuring head, the measuring head falls on the rail top during measurement, and the collecting system reads data of all measuring points. Compared with the prior art, the device is simpler in structure and high in measurement precision.

Description

Technical Field

[0001] The utility model relates to the technical field of rail detection, in particular to a testing device for the profile collapse of high-speed railway rails. Background Art

[0002] The rail top wear of railway rails will affect the running safety of trains, bring instability, noise and impact to vehicles, reduce the critical running speed of locomotives and vehicles, and make the vehicle's power, stability and comfort worse. Whether in urban rail transit, low-floor trains or high-speed trains, as passengers' requirements for comfort are getting higher and higher, it is urgent to ensure the stability and smoothness of high-speed trains. The current measurement system is too complicated and expensive, so a portable measurement device that can accurately detect the collapse wear of rails is needed. Utility Model Content

[0003] The purpose of the utility model is to overcome the defects of the above-mentioned prior art such as complex structure and high cost, and to propose a device that can realize rapid detection of collapse through in-depth analysis of the wear characteristics of the rails, conveniently detect the wear state of partial areas of the rail profile, and have the function of displaying the results.

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

[0005] A testing device for high-speed railway rail profile collapse, the testing device comprises a bracket, the bracket has an inwardly concave right-angled rounded structure matched with the rail head, comprises a measuring surface opposite to the top surface of the rail, a lateral positioning surface abutting the outer non-wear surface of the rail, and a vertical positioning surface abutting the lower jaw surface of the rail; a rail profile collapse measuring mechanism is arranged in the measuring surface.

[0006] As a preferred technical solution, the rail profile collapse measuring mechanism includes multiple pairs of interconnected measuring modules and measuring heads. The measuring module is arranged in the measuring surface of the bracket and one end passes through the bracket. The measuring head is arranged at one end of the measuring module passing through the measuring surface of the bracket.

[0007] As a preferred technical solution, the measuring module adopts a rebound displacement sensor, which can be extended and retracted in the vertical direction of the top surface of the rail.

[0008] As a preferred technical solution, the measuring head is in the shape of a blade.

[0009] As a preferred technical solution, the rail profile collapse testing device also includes an acquisition card, and the acquisition card is signal-connected to the rail profile collapse measuring mechanism.

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

[0011] As a preferred technical solution, a transverse positioning magnet sheet is arranged in the transverse positioning surface; and a vertical positioning magnet sheet is arranged in the vertical positioning surface.

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

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

[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 utility model has the following beneficial effects:

[0016] 1) The measuring mechanism of the utility model is composed of the iron core of the rebound displacement sensor and the measuring head. During measurement, the measuring head falls on the rail top, and the acquisition system reads the data of each point, which can directly obtain the evaluation parameters reflecting the collapse of the rail, with high measurement accuracy and simple structure.

[0017] 2) The rail collapse testing device provided by the utility model is positioned on the non-working surface outside the rail through the transverse magnetic positioning surface, and the lower part is positioned on the lower jaw surface of the rail. The magnetic module is installed in the positioning surface, which can ensure that the measuring head of the device is perpendicular to the top surface of the rail and that the measuring head is within a certain accuracy range of the center of the rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the rail profile collapse testing device of the utility model;

[0019] Figure 2 It is a front cross-sectional view of the rail profile collapse testing device of the utility model;

[0020] Figure 3 It is a calibration diagram of the rail profile collapse testing device of the utility model;

[0021] As shown in the accompanying drawings, the numbers are as follows: 1. bracket; 2. button; 3. display screen; 4. horizontal positioning magnet; 5. vertical positioning magnet; 6. vertical positioning column; 7. measuring head; 8. measuring module; 9. acquisition card; 10. gauge block. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiments. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Some embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0023] Example 1

[0024] The utility model proposes a device that can realize rapid detection of collapse, convenient detection of wear status of partial areas of rail profile, and has the function of result display. Figure 1 As shown, the rail collapse test device is positioned horizontally on the non-working surface outside the rail, and the lower part is positioned on the lower jaw surface of the rail. A magnetic module is installed in the positioning surface to ensure that the measuring head of the device is perpendicular to the top surface of the rail and that the measuring head is within a certain accuracy range of the center of the rail. The measuring mechanism consists of a measuring module 8 of a rebound displacement sensor and a measuring head 7. During measurement, the measuring head 7 falls on the top of the rail and reads the data of each point, which can directly obtain the evaluation parameters reflecting the collapse of the rail, with high measurement accuracy and simple structure.

[0025] like Figure 2 As shown, the rail collapse testing device includes a bracket 1, several buttons 2, a display screen 3, a horizontal positioning magnet sheet 4, a vertical positioning magnet sheet 5, a vertical positioning column 6, a measuring head, a measuring module 8 and an acquisition card 9.

[0026] The bracket 1 is made of alloy and has a concave right-angled rounded corner structure. The side has a lateral positioning surface that fits with the non-wear surface of the outer side of the rail with a certain accuracy. The lower part has a vertical positioning surface that fits with the lower jaw surface of the rail with a certain accuracy. The back is closed with a cover plate. The side of the bracket 1 opposite to the top surface of the rail is a measuring surface. A measuring mechanism is arranged inside the measuring surface, including 5 to 8 pairs of measuring modules 8 and a measuring head 7. Among them, the measuring module 8 is arranged in the measuring surface and one end passes through the bracket 1. The measuring head 7 is arranged at the end of the measuring module 8 that passes through the measuring surface of the bracket 1. Its appearance is blade-shaped and can be extended and retracted up and down to obtain the relative vertical distance of the point. The acquisition card 9 is installed on the upper part of the measuring module 8 and is connected to the signal of the measuring module 8. The bracket 1 is fixed with a vertical positioning device 6. There are buttons 2 and a display screen 3 on the front of the bracket 1, which can input measurement options and display the measurement results.

[0027] like Figure 3As shown, the rail collapse test device is calibrated by the calibration block 10. First, the test device is placed on the calibration block 10 for calibration, and each measuring head 7 is contacted with the horizontal surface of the calibration block 10 to obtain zero calibration data, which can be displayed on the display screen 3 and stored in the acquisition card 9. Then the measuring device is placed on the rail to be measured, the horizontal positioning magnet sheet 4 is in contact with the non-working surface of the outer side of the rail, and the vertical positioning magnet sheet 5 is in contact with the lower jaw of the rail to form a reliable positioning.

[0028] The measuring mechanism inside the bracket 1 will contact the rail top below at the same time, and the rail collapse calculation result will be displayed on the display screen.

[0029] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A device for testing the collapse of high-speed railway rail profile. It is characterized in that The testing device comprises a bracket (1), The bracket (1) has an inwardly concave right-angled rounded structure matched with the rail head, including a measuring surface opposite to the top surface of the rail, a transverse positioning surface abutting against the outer non-wear surface of the rail, and a vertical positioning surface abutting against the lower jaw surface of the rail; a rail profile collapse measuring mechanism is arranged in the measuring surface.

2. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that The rail profile collapse measuring mechanism comprises a plurality of pairs of interconnected measuring modules (8) and measuring heads (7), wherein the measuring module (8) is arranged in a measuring surface of a support (1) and one end thereof passes through the support (1), and the measuring head (7) is arranged at one end of the measuring module (8) passing through the measuring surface of the support (1).

3. The high-speed railway rail profile collapse testing device according to claim 2, It is characterized in that The measuring module (8) adopts a rebound displacement sensor and can be extended and retracted in the vertical direction of the top surface of the rail.

4. The high-speed railway rail profile collapse testing device according to claim 2, It is characterized in that The measuring head (7) is in the shape of a blade.

5. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that The rail profile collapse testing device also includes an acquisition card (9), and the acquisition card (9) is connected to the rail profile collapse measuring mechanism by signal.

6. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that A vertical positioning column (6) is fixedly connected to the measuring surface of the bracket (1).

7. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that A transverse positioning magnet sheet (4) is arranged in the transverse positioning surface; and a vertical positioning magnet sheet (5) is arranged in the vertical positioning surface.

8. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that The bracket (1) is provided with a handle.

9. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that The outer surface of the bracket (1) is provided with a button (2).

10. The high-speed railway rail profile collapse testing device according to claim 1, It is characterized in that The outer surface of the bracket (1) is provided with a display screen (3).

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