A wheel rut extrusion test device

Abstract

The utility model provides a wheel curbstone extrusion test device, include: having the support of the crossbeam of being connected between two upright posts and can go up and down, the connecting column of upper end portion and crossbeam bottom surface center connection, have the horizontal board and the wheel mounting tool of being connected in horizontal board both sides vertical board, two end portions are equipped with in vertical board lower part wheel mounting shaft, the installation disc of being used for connecting the wheel hub of waiting to measure wheel of being sleeved in wheel mounting shaft, be located between two upright posts and be located installation disc below curbstone simulation block, detection unit, through making the top surface center of horizontal board with the lower end portion of connecting column connection, make detection unit include the tire pressure gauge of setting on vertical board, and the high speed camera of aiming at waiting to measure wheel and tire pressure gauge, after installing waiting to measure wheel, can make waiting to measure wheel press curbstone simulation block through crossbeam down, in this process, detection unit cooperation detects, can complete test, extrusion force precision controllable, simulation real, test result can reference high.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, specifically to a wheel curb extrusion testing device. Background Technology

[0002] The wheel curb crush test is used to detect changes in parameters such as load, displacement, and tire pressure when a wheel presses against a curb, in order to determine whether the wheel's resistance to deformation meets the requirements, thereby providing key basic data and guidance for wheel product design and CAE analysis.

[0003] Most of these tests are conducted using wheel curb compression testing devices. Traditional testing devices typically simulate this by having a pendulum drive an impact block to strike the tire. For example, Chinese patent CN107515163A discloses such a testing device. During the test, the applied compression force depends on the rotational speed of the impact block, which is difficult to control precisely. After the impact, the impact block is bounced off by the wheel, and when the wheel presses on the curb, the curb generally does not move. The simulation conducted by this testing device has certain distortions, and the test results have limited reference value. Utility Model Content

[0004] The purpose of this invention is to overcome one or more shortcomings of the prior art and provide a wheel curb extrusion test device.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is a wheel curb crushing test device, comprising: The support includes uprights on both sides and a crossbeam that is movable up and down between the two uprights. The connecting column is connected at its upper end to the center of the bottom surface of the crossbeam; The wheel mounting fixture includes a horizontal plate and vertical plates connected to both sides of the horizontal plate. The center of the top surface of the horizontal plate is connected to the lower end of the connecting column. The wheel is mounted on an axle, with both ends passing through the lower part of the vertical plate; The mounting disc is fitted onto the wheel mounting axle and is used to connect the hub of the wheel to be tested. The curb simulation block is located between two pillars and below the mounting disk; The detection unit includes a tire pressure gauge mounted on a vertical plate and a high-speed camera aimed at the wheel to be tested and the tire pressure gauge.

[0006] Preferably, the lower ends of the two columns are connected as one unit by a bottom beam, and the curb simulation block is disposed on the bottom beam.

[0007] More preferably, the curb simulation block extends axially along the wheel mounting shaft, the cross-section of the curb simulation block is an isosceles triangle, the base of the isosceles triangle is in contact with the upper surface of the bottom beam, and the tip is aligned with the wheel to be tested.

[0008] More preferably, the curb simulation block extends radially along the wheel mounting shaft, the cross-section of the curb simulation block is rectangular, one side of the rectangle is attached to the inner side of the post, and the other side is aligned with the middle position of the width direction of the wheel to be tested.

[0009] More preferably, each curb simulation block has a vertical reinforcing rib inside.

[0010] Preferably, the inner side of the column is provided with a groove extending in the vertical direction, and the end of the crossbeam is provided with a slider that is slidably embedded in the groove.

[0011] Preferably, the upper and lower ends of the connecting column are provided with flanges, and the connecting column is connected to the crossbeam and the horizontal plate through the flanges.

[0012] Preferably, the projection of the wheel mounting fixture in the vertical direction is located within the projection of the crossbeam in the vertical direction.

[0013] Preferably, the wheel mounting axle is a stepped axle, which includes a large diameter section and a small diameter section, and the mounting disc is axially movable and fitted onto the small diameter section.

[0014] More preferably, a locking plate is also fitted onto the small diameter section to lock the position of the mounting disc.

[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: The wheel curb compression test device provided by this utility model includes: a bracket with two upright columns and a crossbeam that can be moved up and down between the two upright columns; a connecting column whose upper end is connected to the center of the bottom surface of the crossbeam; a wheel mounting fixture with a horizontal plate and vertical plates connected to both sides of the horizontal plate; a wheel mounting shaft with both ends passing through the lower part of the vertical plate; a mounting disc sleeved on the wheel mounting shaft for connecting the wheel hub to be tested; a curb simulation block located between the two upright columns and below the mounting disc; and a detection unit. By connecting the center of the top surface of the horizontal plate to the lower end of the connecting column, the detection unit includes a tire pressure gauge set on the vertical plate and a high-speed camera aligned with the wheel to be tested and the tire pressure gauge. After the wheel to be tested is installed, the wheel to be tested can be pressed down on the curb simulation block by moving the crossbeam down. During this process, the detection unit cooperates in detection to complete the test. The compression force is precise and controllable, the simulation is realistic, and the test results are highly referential. Attached Figure Description

[0016] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0017] Figure 2 yes Figure 1 The main view diagram shows the high-speed camera hidden for easier observation.

[0018] Figure 3 yes Figure 2 Cross-sectional view along the AA direction.

[0019] Figure 4 yes Figure 2 A 3D schematic diagram with the wheel to be tested hidden.

[0020] Figure 5 This is a three-dimensional schematic diagram of another embodiment of the present invention, showing a curb simulation block with a rectangular cross section.

[0021] The components include: 1. Wheel under test; 2. Wheel hub; 10. Bracket; 11. Column; 12. Crossbeam; 13. Bottom beam; 14. Slide groove; 20. Connecting column; 21. Upper flange; 22. Lower flange; 30. Wheel mounting fixture; 31. Horizontal plate; 32. Vertical plate; 40. Wheel mounting axle; 41. Large diameter section; 42. Small diameter section; 43. Clamping plate; 50. Mounting disc; 60. Curb simulation block; 61. Vertical reinforcing plate; 71. Tire pressure gauge; 72. High-speed camera. Detailed Implementation

[0022] like Figures 1 to 4As shown, the wheel curb crushing test device provided by this utility model includes: a bracket 10, a connecting column 20, a wheel mounting fixture 30, a wheel mounting shaft 40, a mounting disc 50, a curb simulation block 60, and a detection unit. The bracket 10 includes columns 11 located on the left and right sides, a crossbeam 12 movably connected between the two columns 11, and a bottom beam 13 connected to the lower ends of the two columns 11. The bottom beam 13 is integrated with the columns 11. The connecting column 20 is a cylindrical component. An upper flange 21 is provided at the upper end of the connecting column 20, and the upper flange 21 is connected to the center of the bottom surface of the crossbeam 12. A lower flange 22 is provided at the lower end of the connecting column 20. The projection of the wheel mounting fixture 30 in the vertical direction is located within the projection of the crossbeam 13 in the vertical direction. The wheel mounting fixture 30 includes a horizontal plate 31 extending horizontally in the left-right direction and vertical plates 32 connected to the left and right sides of the horizontal plate 31. The vertical plates 32 extend downwards, and the center of the top surface of the horizontal plate 31 is connected to the lower flange. The disc 22 is connected; the wheel mounting axle 40 extends in the left-right direction, with its left and right ends respectively passing through the lower parts of two vertical plates 32. The wheel mounting axle 40 is a stepped axle, which includes a larger diameter section 41 on the right side and a smaller diameter section 42 on the left side; the mounting disc 50 is sleeved on the smaller diameter section 42 of the wheel mounting axle 40. The mounting disc 50 is used to connect the hub 2 of the wheel 1 to be tested. To facilitate position adjustment, the mounting disc 50 can be axially (left-right) movable when sleeved. On the small diameter section 42, a locking plate 43 is also fitted onto the small diameter section 42 to lock the position of the mounting disc 50; the curb simulation block 60 is located between the two columns 11 and below the mounting disc 50, and the curb simulation block 60 is located on the bottom beam 13; the detection unit includes a tire pressure gauge 71 set on the vertical plate 32, a high-speed camera 72 aligned with the wheel 1 to be tested and the tire pressure gauge 71, and a pressure sensor (not shown in the figure) set in the crossbeam 12 and / or connecting column 20 for measuring the compressive force.

[0023] The advantage of this setup is that after the wheel under test is installed, the wheel can be moved down to press against the curb simulation block. During this process, the detection unit cooperates to detect and complete the test. The upper part of the wheel under test is suspended and not under load, while the bottom is compressed, which can better simulate the force when the wheel under test presses against the curb. The extrusion force is precise and controllable, the simulation is realistic, and the test results are highly referential. At the same time, the test device has a simple structure and low cost.

[0024] In this embodiment, the curb simulation block 60 extends along the axial direction (left and right direction) of the wheel mounting shaft 40. The cross-section of the curb simulation block 60 is an isosceles triangle. The base of the isosceles triangle is in contact with the upper surface of the bottom beam 13, and the tip is aligned with the wheel 1 to be tested. In order to improve the load-bearing effect of the tip, the curb simulation block 60 is further provided with a vertical reinforcing rib plate 61 inside.

[0025] To facilitate the vertical movement of the crossbeam 12, in this embodiment, the inner side of the column 11 is provided with a groove 14 extending in the vertical direction, and the left and right ends of the crossbeam 12 are provided with sliders (not shown in the figure) that are slidably embedded in the groove 14.

[0026] like Figure 5 As shown, in another embodiment, the curb simulation block 60 extends radially (front-rear direction) along the wheel mounting shaft 40. The cross-section of the curb simulation block 60 is rectangular. One side of the rectangle is attached to the inner side of the column 11, and the other side is aligned with the middle position of the width direction of the wheel 1 to be tested. The interior of the curb simulation block 60 is also provided with vertical reinforcing ribs 61.

[0027] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A wheel curb crushing test device, characterized in that, include: The support includes uprights on both sides and a crossbeam that is movable up and down between the two uprights. The connecting column is connected at its upper end to the center of the bottom surface of the crossbeam; The wheel mounting fixture includes a horizontal plate and vertical plates connected to both sides of the horizontal plate. The center of the top surface of the horizontal plate is connected to the lower end of the connecting column. The wheel is mounted on an axle, with both ends passing through the lower part of the vertical plate; The mounting disc is fitted onto the wheel mounting axle and is used to connect the hub of the wheel to be tested. The curb simulation block is located between two pillars and below the mounting disk; The detection unit includes a tire pressure gauge mounted on a vertical plate and a high-speed camera aimed at the wheel to be tested and the tire pressure gauge.

2. The wheel curb crushing test device according to claim 1, characterized in that: The lower ends of the two columns are connected as one unit by a bottom beam, and the curb simulation block is set on the bottom beam.

3. The wheel curb crushing test device according to claim 2, characterized in that: The curb simulation block extends axially along the wheel mounting shaft. The cross-section of the curb simulation block is an isosceles triangle. The base of the isosceles triangle is in contact with the upper surface of the bottom beam, and the tip is aligned with the wheel to be tested.

4. The wheel curb crushing test device according to claim 2, characterized in that: The curb simulation block extends radially along the wheel mounting shaft. The cross-section of the curb simulation block is rectangular. One side of the rectangle is attached to the inner side of the post, and the other side is aligned with the middle position of the width direction of the wheel to be tested.

5. The wheel curb crushing test apparatus according to claim 3 or 4, characterized in that: The interior of each curb simulation block is equipped with vertical reinforcing ribs.

6. The wheel curb crushing test device according to claim 1, characterized in that: The inner side of the column is provided with a sliding groove extending in the vertical direction, and the end of the crossbeam is provided with a slider that is slidably embedded in the sliding groove.

7. The wheel curb crushing test device according to claim 1, characterized in that: The upper and lower ends of the connecting column are provided with flanges, and the connecting column is connected to the crossbeam and the horizontal plate through the flanges.

8. The wheel curb crushing test device according to claim 1, characterized in that: The projection of the wheel mounting fixture in the vertical direction is located within the projection of the crossbeam in the vertical direction.

9. The wheel curb crushing test device according to claim 1, characterized in that: The wheel mounting axle is a stepped axle, which includes a large diameter section and a small diameter section, and the mounting disc is axially movable and fitted onto the small diameter section.

10. The wheel curb crushing test apparatus according to claim 9, characterized in that: The narrow section is also fitted with a locking plate to lock the position of the mounting disc.

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