CN221124255U

CN221124255U - Wheel rail friction performance testing device

Info

Publication number: CN221124255U
Application number: CN202322931350.7U
Authority: CN
Inventors: 陈溥; 马文林; 丁晓萌; 张剑鹏
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Filing date: 2023-10-31
Publication date: 2024-06-11
Anticipated expiration: 2033-10-31

Abstract

The utility model discloses a wheel rail friction performance testing device which comprises an operation table, wherein a steel rail is fixed at the top of the operation table, wheels are arranged on the steel rail, a bearing plate is arranged at the top of the wheels, balancing weights are stacked at the top of the bearing plate, first air cylinders are fixed at the tops of the operation table and positioned at the two sides of the bearing plate, a transverse plate is fixed at the top of the first air cylinder, a vertical plate is fixed at the bottom of the transverse plate, the lower end of the vertical plate is mutually attached to the top of the bearing plate, a fixing mechanism is arranged at the bottom of the vertical plate, a fixing block is fixed at the top of the operation table, a third air cylinder is fixed at the top of the fixing block, and a mounting plate is fixed at the end of the third air cylinder.

Description

Wheel rail friction performance testing device

Technical Field

The utility model relates to the technical field of wheel rail performance test, in particular to a wheel rail friction performance test device.

Background

The rail and wheel friction coefficient refers to the ratio of the friction generated between the rail and wheel to the force perpendicular to the interface. In transportation equipment, the coefficient of friction between the rail and the wheel is very important to the running performance of the vehicle, and therefore a series of tests and studies are required.

However, when the conventional wheel rail friction performance testing device detects the wheel rail friction performance, the number of balancing weights on the railway vehicle needs to be adjusted, so that the weight of the railway vehicle is adjusted to measure the friction force between the wheels at the bottom of the railway vehicle and the steel rail, when the number of the balancing weights is increased or reduced on the railway vehicle, the railway vehicle needs to be manually carried, and because the balancing weights are heavy, the carrying is time-consuming and force-giving due to the fact that the balancing weights are heavy, the risk is easy to occur, and the number of the balancing weights cannot be automatically adjusted. In order to solve the above problems, innovative design is needed on the basis of the original wheel rail friction performance testing device.

Disclosure of utility model

The utility model aims to provide a wheel track friction performance testing device which aims to solve the problems of the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the wheel rail friction performance testing device comprises an operation table, wherein a steel rail is fixed at the top of the operation table, wheels are arranged on the steel rail, a bearing plate is arranged at the top of each wheel, and balancing weights are stacked at the top of each bearing plate;

The top of the operating platform is positioned at two sides of the bearing plate and is fixedly provided with a first air cylinder, the top of the first air cylinder is fixedly provided with a transverse plate, the bottom of the transverse plate is fixedly provided with a vertical plate, the lower end of the vertical plate is mutually attached to the top of the bearing plate, and the bottom of the vertical plate is provided with a fixing mechanism;

The top of operation panel is fixed with the fixed block, the top of fixed block is fixed with the third cylinder, the tip of third cylinder is fixed with the mounting panel, one side of mounting panel is fixed with tension sensor, tension sensor's tip passes through stay cord and the tip fixed connection of bearing plate.

Preferably, the fixing mechanism comprises a second cylinder, a limiting block and a limiting groove, the lower end of the vertical plate penetrates through and is fixed with the second cylinder, the end part of the second cylinder is fixedly provided with the limiting block, the end part of the limiting block is located in the limiting groove, and the limiting groove is formed in two sides of the balancing weight.

Preferably, the limiting block and the limiting groove are symmetrically distributed about the central axis of the balancing weight, the limiting block and the limiting groove are in clamping connection, and the end part of the limiting block is designed into an isosceles trapezoid structure.

Preferably, the anti-falling mechanism is arranged between the bearing plate and the balancing weight as well as between the balancing weight, the anti-falling mechanism comprises an anti-falling block and an anti-falling groove, the anti-falling groove is formed in the top of the bearing plate and the top of the balancing weight, the anti-falling block is arranged in the anti-falling groove, and the top of the anti-falling block is fixedly connected with the bottom of the balancing weight.

Preferably, the anti-falling block and the anti-falling groove are connected in a clamping way, and the bottom of the anti-falling block is designed to be of an isosceles trapezoid structure.

Preferably, a push rod is fixed on one side of the mounting plate, the end part of the push rod is mutually attached to the end part of the bearing plate, a positioning plate is attached to the other end part of the bearing plate, and the bottom of the positioning plate is fixedly connected with the top of the operating platform.

Preferably, two push rods are arranged, and the push rods are symmetrically distributed about the central axis of the mounting plate.

Compared with the prior art, the utility model has the beneficial effects that: according to the wheel rail friction performance testing device, the two second cylinders are started, so that the two second cylinders drive the two limiting blocks to be separated from the two limiting grooves at the two ends of the lowest balancing weight, then the first cylinders are started to drive the second cylinders and the limiting blocks to move upwards, so that the end parts of the limiting blocks are aligned with the limiting grooves at the two ends of the balancing weight at the lower end of the last balancing weight, then the two second cylinders are started, the two second cylinders drive the two limiting blocks to be clamped with the two limiting grooves at the two ends of the balancing weight at the lower end of the last balancing weight, the balancing weight at the lower end of the last balancing weight is fixed, then the first cylinders drive the three balancing weights at the upper part to move upwards to be separated from the balancing weight at the lowest balancing weight, one balancing weight can be placed on the bearing plate, then according to the operation, the limiting blocks are clamped with the limiting grooves at different positions, the number of the balancing weights on the bearing plate can be automatically adjusted, manual carrying adjustment is not needed, the labor intensity of a user is reduced, and the work efficiency is improved;

When the third cylinder promotes the push rod to move to the right side, the wheel and the bearing plate can be pushed to move to the right side, so that the end part of the bearing plate can be attached to the positioning plate, the rail car can be automatically positioned to the original position, and the adjustment of the number of balancing weights is facilitated.

Drawings

FIG. 1 is a schematic diagram of a front cross-sectional structure of the present utility model;

FIG. 2 is a schematic diagram of the structure of the separated weights of the present utility model;

FIG. 3 is a schematic side sectional view of the present utility model;

Fig. 4 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.

In the figure: 1. an operation table; 2. a steel rail; 3. a wheel; 4. a bearing plate; 5. balancing weight; 6. a first cylinder; 7. a cross plate; 8. a riser; 9. a second cylinder; 10. a limiting block; 11. a limit groove; 12. an anti-falling block; 13. an anti-drop groove; 14. a fixed block; 15. a third cylinder; 16. a mounting plate; 17. a tension sensor; 18. a pull rope; 19. a push rod; 20. and (5) positioning the plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides a technical solution: the wheel rail friction performance testing device comprises an operation table 1, wherein a steel rail 2 is fixed at the top of the operation table 1, wheels 3 are arranged on the steel rail 2, a bearing plate 4 is arranged at the top of each wheel 3, and a balancing weight 5 is stacked at the top of each bearing plate 4;

The top of the operation table 1 is positioned at two sides of the bearing plate 4 and is fixedly provided with a first air cylinder 6, the top of the first air cylinder 6 is fixedly provided with a transverse plate 7, the bottom of the transverse plate 7 is fixedly provided with a vertical plate 8, the lower end of the vertical plate 8 is mutually attached to the top of the bearing plate 4, and the bottom of the vertical plate 8 is provided with a fixing mechanism;

The top of the operation table 1 is fixed with a fixed block 14, the top of the fixed block 14 is fixed with a third cylinder 15, the end part of the third cylinder 15 is fixed with a mounting plate 16, one side of the mounting plate 16 is fixed with a tension sensor 17, and the end part of the tension sensor 17 is fixedly connected with the end part of the bearing plate 4 through a pull rope 18.

The fixed establishment includes second cylinder 9, stopper 10 and spacing groove 11, the lower extreme of riser 8 runs through and is fixed with second cylinder 9, the end fixing of second cylinder 9 has stopper 10, the tip of stopper 10 is located the inside of spacing groove 11, spacing groove 11 is seted up in the both sides of balancing weight 5, stopper 10 and spacing groove 11 all are about the central axis symmetric distribution of balancing weight 5, and stopper 10 and spacing groove 11 are the block and connect, and the tip design of stopper 10 is isosceles trapezoid structure, because the tip design of stopper 10 is isosceles trapezoid structure, therefore make things convenient for the block between stopper 10 and the spacing groove 11, when having guaranteed two second cylinders 9 and having driven two stoppers 10 and two spacing groove 11 blocks on the balancing weight 5, make balancing weight 5 can fix.

The bearing plate 4 and balancing weight 5 and all be provided with anticreep mechanism between the balancing weight 5, anticreep mechanism includes anticreep piece 12 and anticreep groove 13, anticreep groove 13 has all been seted up at the top of bearing plate 4 and the top of balancing weight 5, the internally mounted in anticreep groove 13 has anticreep piece 12, the top of anticreep piece 12 and the bottom fixed connection of balancing weight 5, anticreep piece 12 and anticreep groove 13 are the block and connect, and the bottom design of anticreep piece 12 is isosceles trapezoid structure, because the bottom design of anticreep piece 12 is isosceles trapezoid structure, make things convenient for the block of anticreep piece 12 and anticreep groove 13, and the block design between anticreep piece 12 and the anticreep groove 13, dislocation takes place between the preventing balancing weight 5.

One side of mounting panel 16 is fixed with push rod 19, and the tip of push rod 19 is laminated each other with the tip of bearing plate 4, and the laminating of the other tip of bearing plate 4 has locating plate 20, and the bottom of locating plate 20 and the top fixed connection of operation panel 1, push rod 19 are provided with two, and push rod 19 is about the central axis symmetric distribution of mounting panel 16, has guaranteed that bearing plate 4 can remove appointed position under the spacing between push rod 19 and locating plate 20, conveniently installs balancing weight 5 on bearing plate 4.

Working principle: when the wheel rail friction performance testing device is used, firstly, according to the illustration in fig. 1, when the balancing weights 5 do not need to be placed on the bearing plate 4, the first air cylinder 6 is started at the moment, and the transverse plate 7, the vertical plate 8, the second air cylinder 9, the limiting blocks 10 and the four balancing weights 5 are driven to move upwards at the same time, so that the lowest balancing weight 5 is separated from the bearing plate 4;

According to the embodiments shown in fig. 1 and 2, when one balancing weight 5 needs to be placed on the bearing plate 4, two second cylinders 9 are started at this time, so that the two second cylinders 9 drive two limiting blocks 10 to be separated from two limiting grooves 11 at two ends of the balancing weight 5 at the lowest position, then the first cylinders 6 are started to drive the second cylinders 9 and the limiting blocks 10 to move upwards, so that the end parts of the limiting blocks 10 are aligned with the limiting grooves 11 at two ends of the balancing weight 5 at the lowest position, then the two second cylinders 9 are started, so that the two second cylinders 9 drive the two limiting blocks 10 to be clamped with the two limiting grooves 11 at two ends of the balancing weight 5 at the lowest position, the fixing of the balancing weight 5 at the lowest position is completed, and then the first cylinders 6 are started to drive the three balancing weights 5 at the upper position to move upwards to be separated from the balancing weight 5 at the lowest position, so that one balancing weight 5 can be placed on the bearing plate 4, and the balancing weight 5 on the bearing plate 4 can be adjusted, thus the weight of the railway car can be automatically adjusted, the labor intensity is reduced, and the labor intensity is not required to be manually moved;

Then, the third cylinder 15 is started, so that the mounting plate 16, the tension sensor 17, the pull rope 18, the wheels 3 and the bearing plate 4 are subjected to left-side tension, when the wheels 3 move on the steel rail 2, the tension detected by the tension sensor 17 is the maximum friction force of the railway vehicle formed by the wheels 3 and the bearing plate 4, then the number of the balancing weights 5 on the bearing plate 4 is changed according to the operation, the maximum friction force of the railway vehicle under different weights is finished, and the friction performance test of the wheel rail is finished;

And when the third cylinder 15 pushes the push rod 19 to move to the right side, the wheel 3 and the bearing plate 4 can be pushed to move to the right side, so that the end part of the bearing plate 4 can be attached to the positioning plate 20, the railcar can be automatically positioned to the original position, and the adjustment of the quantity of the balancing weights 5 is facilitated.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a wheel rail friction performance testing arrangement, includes operation panel (1), its characterized in that: the top of the operating platform (1) is fixedly provided with a steel rail (2), the steel rail (2) is provided with wheels (3), the top of each wheel (3) is provided with a bearing plate (4), and the tops of the bearing plates (4) are stacked with balancing weights (5);

The top of the operating platform (1) is positioned at two sides of the bearing plate (4) and is fixedly provided with a first air cylinder (6), the top of the first air cylinder (6) is fixedly provided with a transverse plate (7), the bottom of the transverse plate (7) is fixedly provided with a vertical plate (8), the lower end of the vertical plate (8) is mutually attached to the top of the bearing plate (4), and the bottom of the vertical plate (8) is provided with a fixing mechanism;

The top of operation panel (1) is fixed with fixed block (14), the top of fixed block (14) is fixed with third cylinder (15), the tip of third cylinder (15) is fixed with mounting panel (16), one side of mounting panel (16) is fixed with tension sensor (17), the tip of tension sensor (17) is through stay cord (18) and the tip fixed connection of bearing plate (4).

2. The wheel-rail friction performance testing device according to claim 1, wherein: the fixing mechanism comprises a second cylinder (9), a limiting block (10) and limiting grooves (11), wherein the second cylinder (9) is fixedly penetrated at the lower end of the vertical plate (8), the limiting block (10) is fixedly arranged at the end part of the second cylinder (9), the end part of the limiting block (10) is positioned in the limiting grooves (11), and the limiting grooves (11) are formed in two sides of the balancing weight (5).

3. The wheel-rail friction performance testing device according to claim 2, wherein: the limiting blocks (10) and the limiting grooves (11) are symmetrically distributed about the central axis of the balancing weight (5), the limiting blocks (10) and the limiting grooves (11) are connected in a clamping mode, and the end portions of the limiting blocks (10) are designed to be isosceles trapezoid structures.

4. The wheel-rail friction performance testing device according to claim 1, wherein: the anti-falling mechanism is arranged between the bearing plate (4) and the balancing weight (5) and between the bearing plate and the balancing weight (5), the anti-falling mechanism comprises an anti-falling block (12) and an anti-falling groove (13), the anti-falling groove (13) is formed in the top of the bearing plate (4) and the top of the balancing weight (5), the anti-falling block (12) is arranged in the anti-falling groove (13) in an internally mounted mode, and the top of the anti-falling block (12) is fixedly connected with the bottom of the balancing weight (5).

5. The wheel-rail friction performance testing device according to claim 4, wherein: the anti-falling block (12) and the anti-falling groove (13) are connected in a clamping mode, and the bottom of the anti-falling block (12) is designed to be of an isosceles trapezoid structure.

6. The wheel-rail friction performance testing device according to claim 1, wherein: one side of mounting panel (16) is fixed with push rod (19), the tip of push rod (19) is laminated each other with the tip of bearing plate (4), the other tip laminating of bearing plate (4) has locating plate (20), the bottom of locating plate (20) is fixed with the top of operation panel (1) and is connected.

7. The wheel-rail friction performance testing device according to claim 6, wherein: the number of the push rods (19) is two, and the push rods (19) are symmetrically distributed about the central axis of the mounting plate (16).