A testing device for rubber track shoe wear performance

Abstract

The present application relates to the technical field of wear test, and discloses a kind of testing device of rubber track shoe wear performance, including disc base, passive rotary wear plate, track shoe fixing structure, reciprocating horizontal displacement unit, one end of the passive rotary wear plate is rotatably connected on the surface of the disc base by rotating structure, the reciprocating horizontal displacement unit drives the track shoe fixing structure to slide along the vertical direction under the static of the passive rotary wear plate, the passive rotary wear plate rotates synchronously with the track shoe fixing structure movement;The technical scheme is linear sliding by track shoe fixing structure, under the influence of friction of track shoe fixing structure, rubber track shoe is subjected to the composite sliding of linear sliding and rotary sliding of passive rotary wear plate.This mode not only can reduce the use of driving part, and make the simulation process of rubber track shoe more consistent with use process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wear test, and particularly relates to a testing device for wear performance of rubber track plate. BACKGROUND

[0002] The rubber track needs to be tested for wear to determine whether it can meet the use requirements. The wear test is mainly in the form of sliding friction to test the wear of the rubber track plate. The one-way sliding test only needs to use a single driving unit to complete the test requirement, which simplifies the equipment application. However, in the process of one-way sliding, the reciprocating trajectory of the friction surface and the rubber track plate is single and coincides, and the surface wear micro-morphology of the rubber track plate is linear groove.

[0003] The track turns by using the speed difference of two tracks in the process of vehicle turning, and the rubber track plate receives not only linear friction but also rotational friction. In the process of rotational friction, rotational power needs to be provided for the rubber track plate or the friction surface, which increases the number of devices.

[0004] The rubber track plate needs to increase the friction and the adhesion by increasing the pressure in the process of friction test. If the pressure is applied to the driving shaft of the rotational power piece, the service life of the power piece is reduced or damaged. SUMMARY

[0005] The present application aims to provide a testing device for wear performance of rubber track plate. The linear sliding of the track plate fixing structure is adopted, and the rubber track plate is subjected to the composite sliding of linear sliding and rotational sliding of the passive rotary wear plate under the influence of the friction of the track plate fixing structure, so that the problems in the background technology are solved.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme.

[0007] A testing device for wear performance of rubber track plate, comprising a disc base, a passive rotary wear plate, a track plate fixing structure, and a reciprocating horizontal displacement unit, one end of the passive rotary wear plate is rotationally connected to the surface of the disc base through a rotating structure, and the rotating structure is close to the edge of the disc base.

[0008] The track plate fixing structure is located above the passive rotary wear plate, the reciprocating horizontal displacement unit drives the track plate fixing structure to slide along the vertical direction of the passive rotary wear plate in static state, the passive rotary wear plate rotates synchronously with the movement of the track plate fixing structure, and the surface of the passive rotary wear plate is sequentially provided with a first friction surface, a second friction surface and a third friction surface starting from the rotating structure.

[0009] As a further scheme of the application, the plate width length of the track plate fixing structure is less than the rotating plate length of the passive rotary wear plate, and the area of the first coverage area is greater than the area of the second coverage area, and the area of the third coverage area.

[0010] As a further scheme of the application, the bottom surface of the track plate fixing structure is provided with a pressure assembly, the pressure assembly drives the track plate below the track plate fixing structure to always contact the first coverage area, the second coverage area and the third coverage area and provide contact pressure.

[0011] As a further scheme of the application, in the rotating state of the passive rotary wear plate, the area of the third coverage area increases, and the area of the third coverage area is always less than the area of the third friction surface.

[0012] As a further scheme of the application, the middle part of the passive rotary wear plate is provided with a key groove, and the lower part of the track plate fixing structure is provided with a sliding connection part, and the sliding connection part is slidingly connected in the inside of the key groove.

[0013] As a further scheme of the application, the sliding connection part comprises a threaded part, a press-fit part and a sliding part, a countersunk hole is formed in the middle part of the track plate, the threaded part is fixedly connected with the track plate fixing structure, the press-fit part is located in the countersunk hole to fix the track plate, and the sliding part is slidingly located in the key groove.

[0014] As a further scheme of the application, the middle part of the track plate fixing structure has a center area, and the center of the center area is concentric with the center of the sliding connection part.

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

[0016] Advantage I: the passive rotary wear plate is linearly slid under the influence of the friction of the track plate fixing structure, and the rubber track plate is subjected to the combined sliding of linear sliding and rotary sliding of the passive rotary wear plate. This way not only reduces the use of driving parts, but also makes the simulation process of the rubber track plate more consistent with the use process.

[0017] Advantage II: by using the displacement characteristics of the rubber track plate in advantage I, the first coverage area, the second coverage area and the third coverage area are set, so that the rubber track plate can realize combined friction surface mixed friction and comparison, and reduce the error between experimental results and real environment. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 It is a top view schematic diagram of a rubber track plate wear performance testing device;

[0020] Figure 2 It is a comparison schematic diagram of the movement trajectory coverage and disassembly of the third friction surface in a rubber track plate wear performance testing device;

[0021] Figure 3 It is a comparison schematic diagram of the movement trajectory coverage and disassembly of the first friction surface in a rubber track plate wear performance testing device;

[0022] Figure 4 It is a comparison schematic diagram of the movement trajectory coverage and disassembly of the second friction surface in a rubber track plate wear performance testing device;

[0023] Figure 5 It is a schematic diagram of a rubber track plate wear performance testing device after adding a key groove;

[0024] In the figure: 1, disc base; 2, passive rotary wear plate; 21, rotating structure; 22, key groove; 100, first friction surface; 101, first coverage area; 200, second friction surface; 201, second coverage area; 300, third friction surface; 301, third coverage area; 400, center area; 500, plate width length; 600, rotating plate length; 3, track plate fixing structure; 31, sliding connection part; 4, reciprocating horizontal displacement unit. DETAILED DESCRIPTION

[0025] Please refer to Figures 1-5Embodiment One:

[0026] In order to simulate the linear sliding and rotational sliding of the rubber track shoe in the use process, the single driving part is used for driving simulation, and the following improvements are made:

[0027] In this embodiment, the disc base 1, the passive rotating wear plate 2, the track shoe fixing structure 3, and the reciprocating horizontal displacement unit 4 are included. One end of the passive rotating wear plate 2 is rotatably connected to the surface of the disc base 1 through the rotating structure 21. The rotating structure 21 is close to the edge of the disc base 1. The track shoe fixing structure 3 is located above the passive rotating wear plate 2. The reciprocating horizontal displacement unit 4 drives the track shoe fixing structure 3 to slide along the vertical direction of the passive rotating wear plate 2 in a static state. The passive rotating wear plate 2 rotates synchronously with the movement of the track shoe fixing structure 3. The reciprocating horizontal displacement unit 4 is a prior art, which can be realized by a reciprocating pushing structure.

[0028] Improvement principle: Through the linear sliding of the track shoe fixing structure 3, the passive rotating wear plate 2 is influenced by the friction of the track shoe fixing structure 3, and the passive rotating wear plate 2 rotates. With the change of the angle of the passive rotating wear plate 2, the distance between the track shoe fixing structure 3 and the rotating structure 21 on the passive rotating wear plate 2 increases, so that the rubber track shoe fixed by the track shoe fixing structure 3 is subjected to the combined sliding of linear sliding and rotational sliding of the passive rotating wear plate 2. This way not only reduces the use of driving parts, but also makes the simulation process of the rubber track shoe more consistent with the use process.

[0029] Furthermore, the track shoe fixing structure 3 is provided with a pressure assembly on the bottom surface. The pressure assembly drives the track shoe below the track shoe fixing structure 3 to always contact and provide contact with the first coverage area 101, the second coverage area 201, and the third coverage area 301. Before use, the rubber track shoe is fixed at the movable plate below the track shoe fixing structure 3. The movable plate can exert downward pressure on the movable plate through screws, springs, and other pressure components. The pressure ensures that the rubber track shoe is always in contact with the passive rotating wear plate 2. Embodiment

[0030] On the basis of Embodiment One, in order to further simulate the mixed friction state of the rubber track shoe in the running process under different terrains, on the basis of the combined rotation of Embodiment One, the following contents are added:

[0031] Improvement: The surface of the passive rotary wear plate 2 is sequentially provided with a first friction surface 100, a second friction surface 200 and a third friction surface 300 starting from the rotating structure 21. When the passive rotary wear plate 2 is static, the contact areas of the first friction surface 100, the second friction surface 200 and the third friction surface 300 with the track shoe fixing structure 3 are respectively the first coverage area 101, the second coverage area 201 and the third coverage area 301. The plate width length 500 of the track shoe fixing structure 3 is less than the rotating plate length 600 of the passive rotary wear plate 2, and the area of the first coverage area 101 is greater than the area of the second coverage area 201, which is greater than the area of the third coverage area 301.

[0032] Improvement principle: During the linear sliding process of the track shoe fixing structure 3, the passive rotary wear plate 2 changes the angle with the movement of the track shoe fixing structure 3. As the horizontal angle of the passive rotary wear plate 2 increases, the end of the passive rotary wear plate 2 away from the rotating structure 21 gradually contacts the rubber track shoe. Therefore, the plate width length 500 of the track shoe fixing structure 3 is less than the rotating plate length 600 of the passive rotary wear plate 2, and the contact area between the rubber track shoe and the passive rotary wear plate 2 can be changed. Further, the area of the first coverage area 101 is greater than the area of the second coverage area 201, which is greater than the area of the third coverage area 301. Adapt to the characteristics that the area of the first coverage area 101 decreases and the area of the third coverage area 301 increases with the movement of the track shoe fixing structure 3, thereby forming a composite wear test, and the specific effects are as follows:

[0033] Effect: Please refer to the color in Figures 2-4 , Figure 2 is the contact area of the third coverage area 301 with the rubber track shoe at different positions and the overlapping area of multiple contact areas. As can be seen from Figure 2 , the coverage area of the third coverage area 301 and the rubber track shoe is located on the right half of the midpoint of the rubber track shoe.

[0034] Figure 3 The color in Figure 3 is the contact area of the first coverage area 101 with the rubber track shoe at different positions and the overlapping area of multiple contact areas. As can be seen from , the coverage area of the first coverage area 101 and the rubber track shoe is located on the left half of the midpoint of the rubber track shoe.

[0035] Figure 4 The color in Figure 4 is the contact area of the second coverage area 201 with the rubber track shoe at different positions and the overlapping area of multiple contact areas. As can be seen from , the coverage area of the second coverage area 201 and the rubber track shoe is located at the center of the rubber track shoe.

[0036] The center area 400 is added, and the center of the center area 400 is coincident with the geometric center of the rubber track plate. The left side of the center area 400 forms the first covering area 101 and the second covering area 201 composite friction effect, and the right side of the center area 400 forms the second covering area 201 and the third covering area 301 composite friction effect.

[0037] If the third friction surface 300 is consistent with the friction surface of the first friction surface 100, at this time, the left and right sides of the center area 400 form a mutual contrast or increase the friction reference area.

[0038] If the third friction surface 300 is inconsistent with the first friction surface 100, at this time, the left and right sides of the center area 400 form a mutual contrast group, and by controlling the variable form, the same motion variable is used to obtain the wear result of the rubber track plate under the combination of different friction surfaces.

[0039] Supplementary explanation: In the rotating state of the passive rotating wear plate 2, the area of the third covering area 301 increases, and the area of the third covering area 301 is always less than the area of the third friction surface 300.

[0040] If the area of the third covering area 301 is equal to the area of the third friction surface 300, the rubber track plate continues to move, which will cause the rubber track plate to gradually separate from the passive rotating wear plate 2. When the rubber track plate separates from the passive rotating wear plate 2, the rubber track plate cannot slide to the upper side of the passive rotating wear plate 2 due to the friction, and cannot realize the wear test. Embodiment

[0041] On the basis of the second embodiment, in order to avoid the separation of the track plate fixing structure 3 and the passive rotating wear plate 2, and the excessive displacement of the passive rotating wear plate 2 and the track plate fixing structure 3, the following improvements are made:

[0042] The improvement content is that the middle part of the passive rotating wear plate 2 is provided with a key groove 22, and the lower side of the track plate fixing structure 3 is provided with a sliding connection part 31, and the sliding connection part 31 is slidingly connected in the inside of the key groove 22.

[0043] The sliding connection part 31 can slide in the key groove 22, and as the angle of the passive rotating wear plate 2 moves, the track plate fixing structure 3 will also slide along the long side of the passive rotating wear plate 2. Through the limiting action of the key groove 22 and the sliding connection part 31, it is ensured that the passive rotating wear plate 2 and the track plate fixing structure 3 are always in a connected state.

[0044] In order to further simplify the fixing mode of the rubber track plate, the following improvements are made:

[0045] The sliding connecting part 31 comprises a threaded part, a pressing part and a sliding part, a counter sunk hole is arranged in the middle of the track plate, the threaded part is fixedly connected with the track plate fixing structure 3, the pressing part is arranged in the counter sunk hole to fix the track plate, and the sliding part is arranged in the key groove 22 to slide.

[0046] The sliding connecting part 31 slides with the key groove 22 through the sliding part, is connected with the track plate fixing structure 3 through the threaded part, or is connected with the pressure movable plate of the track plate fixing structure 3 through the threaded part. The pressing part is arranged in the counter sunk hole to fix the plate surface, at this time, the rubber track plate is separated from the track plate fixing structure 3 or the pressure movable half of the track plate fixing structure 3.

[0047] The middle part of the track plate fixing structure 3 has a center area 400, and the center of the center area 400 is concentric with the center of the sliding connecting part 31.

[0048] After the track plate fixing structure 3 is concentric with the center area 400, it can be ensured that the passive rotary wear plate 2 always slides and rotates around the sliding connecting part 31, thereby enhancing the friction coverage area of the center area 400 and avoiding the problem of invalid friction caused by the passive rotary wear plate 2 deviating from the center area 400.

[0049] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A device for testing the wear performance of rubber track pads, comprising a disc base (1) and a passive rotating wear plate (2) and a track pad fixing structure (3) and a reciprocating horizontal displacement unit (4), characterized in that: One end of the passive rotating wear plate (2) is rotatably connected to the surface of the disc base (1) via a rotating structure (21), the rotating structure (21) being close to the edge of the disc base (1); The track plate fixing structure (3) is located above the passive rotating wear plate (2). The reciprocating horizontal displacement unit (4) drives the track plate fixing structure (3) to slide along the vertical direction of the passive rotating wear plate (2) in a static state. A keyway (22) is provided in the middle of the passive rotating wear plate (2). A sliding connection part (31) is provided below the track plate fixing structure (3). The sliding connection part (31) is slidably connected inside the keyway (22). The passive rotating wear plate (2) moves along with the track plate fixing structure. The structure (3) rotates synchronously. The surface of the passive rotating wear plate (2) is provided with a first friction surface (100), a second friction surface (200), and a third friction surface (300) in sequence with the rotating structure (21) as the starting point. When the passive rotating wear plate (2) is static, the contact areas of the first friction surface (100), the second friction surface (200), and the third friction surface (300) with the track plate fixing structure (3) are the first covering area (101), the second covering area (201), and the third covering area (301), respectively.

2. A device for testing the wear performance of a rubber track shoe according to claim 1, characterized in that: The width and length (500) of the track plate fixing structure (3) is less than the turning plate length (600) of the passive rotating wear plate (2), and the area of ​​the first covering area (101) is greater than the area of ​​the second covering area (201) and the area of ​​the third covering area (301).

3. The device for testing the wear performance of a rubber track shoe of claim 1, wherein: The bottom surface of the track plate fixing structure (3) is provided with a pressure component. The pressure component drives the track plate below the track plate fixing structure (3) to always contact the first covering area (101), the second covering area (201) and the third covering area (301) and provide contact pressure.

4. The device of claim 1, wherein: When the passive rotating wear plate (2) is in a rotating state, the area of ​​the third covering area (301) increases and the area of ​​the third covering area (301) is always smaller than the area of ​​the third friction surface (300).

5. The device of claim 1, wherein: The sliding connection part (31) includes a threaded part, a pressing part, and a sliding part. A countersunk hole is opened in the middle of the track plate. The threaded part is fixedly connected to the track plate fixing structure (3). The pressing part is located in the countersunk hole to fix the track plate. The sliding part is located in the keyway (22) to slide.

6. A device for testing the wear performance of a rubber track shoe according to claim 5, characterized in that: The track plate fixing structure (3) has a central area (400) in the middle, and the center of the central area (400) is concentric with the center of the sliding connection part (31).

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