CN113899568A

CN113899568A - Engineering solid tyre antiskid capability test rack

Info

Publication number: CN113899568A
Application number: CN202111248961.0A
Authority: CN
Inventors: 石小龙; 翟豪瑞; 郑竹安; 熊新; 孙婷婷; 王辉; 张德丰
Original assignee: Yancheng Institute of Technology
Current assignee: Yancheng Institute of Technology
Priority date: 2021-10-26
Filing date: 2021-10-26
Publication date: 2022-01-07

Abstract

The invention relates to the technical field of solid tire testing equipment, and discloses an engineering solid tire anti-skid performance testing rack which comprises: tire body and brace table, the inner wall fixedly connected with wheel hub of tire body. This engineering solid tyre antiskid capability test rack, through setting up the motor, fixed establishment, accredited testing organization, the metal detection body, install the tire body on the installation pole through fixed establishment, electric telescopic handle drives accredited testing organization and rises to and tire body in close contact with, the motor drives the tire body through the installation pole and rolls on accredited testing organization, tire body motion drives motor and mounting bracket removal, proximity switch response metal detection body and control power close, make motor stop work, still have speed when tire body stall, continue to slide until stopping on the accredited testing organization, measure sliding distance, the gliding distance of tire body is shorter, the better the antiskid capability of tire body, indoor direct test, avoid environment and weather influence test result.

Description

Engineering solid tyre antiskid capability test rack

Technical Field

The invention relates to the technical field of solid tire testing equipment, in particular to an engineering solid tire anti-skid performance testing rack.

Background

The solid tyre is a tyre commonly used on engineering vehicles, the tyre body of the solid tyre is solid, a cord thread is not used as a framework, and inflation is not needed, so that an inner tube or an airtight layer is not needed.

The operational environment of engineering vehicle is complicated, need adapt to multiple different ground, and solid tyre need carry out the antiskid nature test before producing, and common antiskid test needs be at the field test at present, and the ground condition in test place easily receives environment and weather influence, causes the result of test inaccurate, and when carrying out different ground condition test antiskid nature, needs to change the test place on different ground, and operation process is comparatively troublesome.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an engineering solid tire anti-skid performance test bench, which solves the problems mentioned in the background.

The invention provides the following technical scheme: an engineering solid tire antiskid capability test rack includes: the tire comprises a tire body and a supporting table, wherein a wheel hub is fixedly connected to the inner wall of the tire body, a guide rail is installed at the top of the supporting table, a guide block is connected to the surface of the guide rail in a sliding manner, a mounting frame is installed at the top of the guide block, a motor is fixedly connected to the inner wall of the mounting frame, a shaft coupling is arranged on an output shaft of the motor, a mounting rod is installed at one end, far away from the motor, of the shaft coupling, a fixing mechanism is arranged on the surface of the mounting rod, the wheel hub is sleeved on the surface of the mounting rod, the tire body is installed on the surface of the mounting rod through the fixing mechanism, a testing mechanism is movably connected to the top of the supporting table, connecting frames are fixedly connected to the two sides of the testing mechanism, an electric telescopic rod is fixedly connected to the top of the inner wall of the connecting frames, the telescopic end of the electric telescopic rod is fixedly connected to the top of the testing mechanism, and a support is fixedly connected to the top of the supporting table, guide rail, guide block, mounting bracket and motor all are located the inside of support, proximity switch is installed at the top of support inner wall, the top fixedly connected with installation piece of guide block, the top fixedly connected with metal detection body of installation piece, the both sides of guide block all are provided with buffer gear.

Preferably, fixed establishment includes the locating plate, locating plate fixed connection is on the surface of installation pole, locating plate and wheel hub's inner wall swing joint, the fixed surface of locating plate is connected with the fixed column, the quantity of fixed column is a plurality of, and is a plurality of the fixed column uses the center of locating plate to be annular array distribution as the array center, wheel hub's inner wall has seted up the mounting hole, and the inner wall of mounting hole and the surface swing joint of fixed column, the surface threaded connection of installation pole has the fixed disk, fixed disk swing joint is at the inner wall of installation pole.

Preferably, the surface of the fixed disk close to the hub is fixedly connected with an anti-slip pad, and the surface of the fixed disk far from the hub is fixedly connected with a holding rod.

Preferably, the testing mechanism comprises a testing table, a mounting groove is formed in the front side of the testing table, a testing plate is movably connected to the inner wall of the mounting groove, the top of the testing plate is movably connected with the surface of the tire body, two protection plates are arranged on two sides of the tire body, and the two protection plates are fixedly connected to the top of the testing table.

Preferably, the equal fixedly connected with limiting plate in both sides of surveying the board, the spacing groove has all been seted up to the both sides of mounting groove inner wall, limiting plate swing joint has the spacing groove, accredited testing organization's top is provided with positioning mechanism, positioning mechanism's quantity is two, two positioning mechanism uses the central vertical face through the testboard to set up as the plane of symmetry.

Preferably, positioning mechanism includes the spring, leads a tub, leads a board and locating lever, lead the top of the equal fixed connection of position pipe and spring at the testboard, the spring is located the inside of leading a tub, the spring cup joints on the surface of locating lever, the constant head tank has been seted up at the top of limiting plate, the bottom of locating lever run through the testboard and with the inner wall joint of constant head tank, the top of locating lever and the top of spring all with the bottom fixed connection of leading a board, lead a board sliding connection at the inner wall of leading a tub.

Preferably, positioning mechanism still includes gag lever post and spacing ring, gag lever post fixed connection is at the top of leading the bit board, the top of gag lever post is run through leads the bit pipe and is extended to the outside of leading the bit pipe, spacing ring threaded connection is on the surface of gag lever post, spacing ring swing joint is at the top of leading the bit pipe.

Preferably, the upper surfaces of the two limiting plates are provided with slope surfaces, and the bottom ends of the positioning rods are cambered surfaces.

Preferably, buffer gear includes fixed plate and cushion, the quantity of fixed plate is two, two the fixed plate is located the both sides of motor respectively, the side of fixed plate and the side fixed connection of guide block, cushion fixed connection is on the fixed plate surface of keeping away from the motor.

Preferably, the inner wall of the support is fixedly connected with a graduated scale, the graduated scale is positioned on one side of the mounting block, which is far away from the motor, and the position of the starting point of the graduated scale corresponds to the position of the proximity switch.

Compared with the prior art, the invention has the following beneficial effects:

1. the skid resistance test bench for the solid tire of the engineering is characterized in that a motor, a fixing mechanism, a test mechanism and a metal detection body are arranged, a tire body is arranged on a mounting rod through the fixing mechanism, an electric telescopic rod drives the test mechanism to ascend, the test mechanism is enabled to be in close contact with the tire body, the motor drives the tire body to roll on the test mechanism through the mounting rod, the tire body is enabled to have speed, the motor and a mounting rack are driven to move through the mounting rod while the tire body rolls on the test mechanism, the mounting rack moves to drive a guide block to slide on the surface of a guide rail, when the metal detection body reaches the position below a proximity switch, the proximity switch senses the metal detection body and then controls a power supply to be turned off, the motor stops working, an output shaft of the motor stops rotating, the mounting rod stops rotating, and the mounting rod stops rotating a wheel hub through the fixing mechanism, thereby make tire body stall, still have speed when tire body stall, can continue to slide on testing the mechanism, after the tire body stop motion, measure the gliding distance of tire body, the gliding distance of tire body is shorter, and the skid resistance of tire body is better, can carry out direct test indoor, avoids environment and weather influence test's result, makes test result more accurate.

2. This engineering solid tyre antiskid capability test rack through setting up accredited testing organization, testboard, mounting groove and surveying the board, can make the survey test board of different materials in advance in the place of working as required, surveys the inner wall at the mounting groove at survey test board and installs, changes according to the test requirement, can obtain the test result on different ground, and the operation process of test is simplified in the different test places of changing, conveniently tests.

3. This engineering solid tyre antiskid capability test rack, through setting up the spring, guide tube, guide plate, locating lever and constant head tank, survey the inner wall of panel mounting to the mounting groove, it connects to the inner wall of spacing groove to drive spacing integrated circuit board, the slope extrusion locating lever of limiting plate, make the locating lever upward movement, locating lever upward movement drives guide plate upward movement, extension spring, after the inner wall of spacing groove is gone into to whole cards of limiting plate, the constant head tank motion is to the below of locating lever, the spring shrink, it descends to drive guide plate, guide plate descends and drives the locating lever and descend, the joint is to the inner wall of constant head tank, fix the position of limiting plate, thereby fix the position of surveying the board, avoid surveying the position of surveying the board in the testing process to take place to remove, prevent that the test result from producing the error.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic side sectional view of the fixing mechanism of the present invention;

FIG. 3 is a schematic view of an exploded structure of the securing mechanism of the present invention;

FIG. 4 is a schematic side sectional view of the proximity switch of the present invention;

FIG. 5 is a schematic diagram of an explosive structure of a testing mechanism according to the present invention;

FIG. 6 is a schematic side sectional view of the positioning mechanism of the present invention;

FIG. 7 is an enlarged view of the structure at A in FIG. 6 according to the present invention.

In the figure: 1. a tire body; 2. a support table; 3. a hub; 4. a guide rail; 5. a guide block; 6. a mounting frame; 7. a motor; 8. a coupling; 9. mounting a rod; 10. a fixing mechanism; 101. positioning a plate; 102. fixing a column; 103. fixing the disc; 11. a testing mechanism; 111. a test bench; 112. mounting grooves; 113. a test board; 12. a connecting frame; 13. an electric telescopic rod; 14. a support; 15. a proximity switch; 16. mounting blocks; 17. a metal detection body; 18. a non-slip mat; 19. a holding rod; 20. a limiting plate; 21. a limiting groove; 22. a positioning mechanism; 221. a spring; 222. a guide tube; 223. a guide plate; 224. positioning a rod; 23. positioning a groove; 24. a limiting rod; 25. a limiting ring; 26. a slope surface; 27. a graduated scale; 28. a buffer mechanism; 281. a fixing plate; 282. a cushion pad; 29. and (4) a protective plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, an antiskid performance testing bench for solid tires comprises: the tire comprises a tire body 1 and a supporting table 2, wherein a hub 3 is fixedly connected to the inner wall of the tire body 1, a guide rail 4 is installed at the top of the supporting table 2, a guide block 5 is slidably connected to the surface of the guide rail 4, an installation frame 6 is installed at the top of the guide block 5, a motor 7 is fixedly connected to the inner wall of the installation frame 6, a coupler 8 is arranged on an output shaft of the motor 7, an installation rod 9 is installed at one end, far away from the motor 7, of the coupler 8, a fixing mechanism 10 is arranged on the surface of the installation rod 9, the hub 3 is sleeved on the surface of the installation rod 9, the tire body 1 is installed on the surface of the installation rod 9 through the fixing mechanism 10, a testing mechanism 11 is movably connected to the top of the supporting table 2, connecting frames 12 are fixedly connected to both sides of the testing mechanism 11, an electric telescopic rod 13 is fixedly connected to the top of the inner wall of the connecting frames 12, and a telescopic end of the electric telescopic rod 13 is fixedly connected to the top of the testing mechanism 11, the top fixedly connected with support 14 of brace table 2, guide rail 4, guide block 5, mounting bracket 6 and motor 7 all are located the inside of support 14, and proximity switch 15 is installed at the top of support 14 inner wall, and the top fixedly connected with installation piece 16 of guide block 5, the top fixedly connected with metal detection body 17 of installation piece 16, the both sides of guide block 5 all are provided with buffer gear 28.

Wherein; the fixing mechanism 10 comprises a positioning plate 101, the positioning plate 101 is fixedly connected to the surface of the mounting rod 9, the positioning plate 101 is movably connected with the inner wall of the hub 3, the surface of the positioning plate 101 is fixedly connected with a plurality of fixing columns 102, the fixing columns 102 are distributed in an annular array mode by taking the center of the positioning plate 101 as the array center, the inner wall of the hub 3 is provided with mounting holes, the inner wall of each mounting hole is movably connected with the surface of the corresponding fixing column 102, the surface of the mounting rod 9 is in threaded connection with a fixing disc 103, the fixing disc 103 is movably connected to the inner wall of the mounting rod 9, the hub 3 is sleeved on the mounting rod 9 until the inner wall of the hub 3 is clamped with the positioning plate 101, the fixing columns 102 on the positioning plate 101 are aligned with the mounting holes damaged by the hub 3, the fixing columns 102 are clamped to the inner wall of the mounting holes, the fixing disc 103 is mounted on the surface of the mounting rod 9, and the fixing disc 103 is rotated, the position of the hub 3 can be fixed by inserting the fixing plate 103 into the inner wall of the hub 3 and clamping the hub 3 with the fixing plate 103 and the positioning plate 101, thereby fixing the position of the tire body 1.

Wherein; fixed disk 103 is close to wheel hub 3's fixed surface and is connected with slipmat 18, fixed disk 103 keeps away from wheel hub 3's fixed surface and is connected with holding rod 19, holding rod 19 makes things convenient for the hand to grip, the hand promotes holding rod 19 and can drives fixed disk 103 motion, conveniently install fixed disk 103 on installation pole 9, fixed disk 103 installs the back on installation pole 9, compress tightly slipmat 18 at wheel hub 3's inner wall, prevent that fixed disk 103 and wheel hub 3's inner wall from taking place to slide, wheel hub 3's position can not become flexible, prevent that 1 test procedure of tire from taking place to rock, avoid the measuring result inaccurate.

Wherein; testing mechanism 11 includes testboard 111, mounting groove 112 has been seted up in testboard 111's the front, the inner wall swing joint of mounting groove 112 has survey test panel 113, survey test panel 113's top and tire body 1's surperficial swing joint, tire body 1's both sides all are provided with guard plate 29, two guard plate 29 fixed connection are at testboard 111's top, the place of working as required can make in advance survey test panel 113 of different materials, survey test panel 113 and install the inner wall at mounting groove 112, change according to the test requirement, can obtain the test result on different ground, different change test places, simplify the operation process of test, conveniently test.

Wherein; the two sides of the test board 113 are fixedly connected with limit plates 20, the two sides of the inner wall of the mounting groove 112 are respectively provided with a limit groove 21, the limit plates 20 are movably connected with the limit grooves 21, the top of the test mechanism 11 is provided with two positioning mechanisms 22, the two positioning mechanisms 22 are symmetrically arranged by taking a central vertical plane passing through the test board 111 as a symmetrical plane, each positioning mechanism 22 comprises a spring 221, a guide pipe 222, a guide plate 223 and a positioning rod 224, the guide pipe 222 and the spring 221 are both fixedly connected with the top of the test board 111, the spring 221 is positioned inside the guide pipe 222, the spring 221 is sleeved on the surface of the positioning rod 224, the top of the limit plate 20 is provided with a positioning groove 23, the bottom end of the positioning rod 224 penetrates through the test board 111 and is clamped with the inner wall of the positioning groove 23, the top end of the positioning rod 224 and the top end of the spring 221 are both fixedly connected with the bottom of the guide plate 223, the guide plate 223 is slidably connected with the inner wall of the guide pipe 222, survey test panel 113 and install the inner wall to mounting groove 112, drive limiting plate 20 joint to the inner wall of spacing groove 21, limiting plate 20's slope 26 extrudees locating lever 224, make locating lever 224 upward movement, locating lever 224 upward movement drives guide plate 223 upward movement, extension spring 221, after limiting plate 20 all blocks into the inner wall of spacing groove 21, constant head tank 23 moves to the below of locating lever 224, spring 221 contracts, it descends to drive guide plate 223, guide plate 223 descends and drives locating lever 224 and descend, the joint is to the inner wall of constant head tank 23, fix limiting plate 20's position, thereby fix surveying test panel 113's position, avoid surveying test panel 113's position in the testing process to take place to remove, prevent that the test result from producing the error.

Wherein; the positioning mechanism 22 further comprises a limiting rod 24 and a limiting ring 25, the limiting rod 24 is fixedly connected to the top of the guide plate 223, the top end of the limiting rod 24 penetrates through the guide tube 222 and extends to the outside of the guide tube 222, the limiting ring 25 is in threaded connection with the surface of the limiting rod 24, and the limiting ring 25 is movably connected to the top of the guide tube 222.

Wherein; the upper surfaces of the two limit plates 20 are provided with slope surfaces 26, the bottom ends of the positioning rods 224 are arc surfaces, and the slope surfaces 26 are convenient for ejecting the positioning rods 224 when the limit plates 20 are inserted into the inner walls of the limit grooves 21.

Wherein; buffer gear 28 includes fixed plate 281 and cushion 282, and the quantity of fixed plate 281 is two, and two fixed plates 281 are located the both sides of motor 7 respectively, and the side of fixed plate 281 and the side fixed connection of leading position piece 5, cushion 282 fixed connection are on the surface that motor 7 was kept away from to fixed plate 281, and fixed plate 281 and cushion 282 can protect motor 7, and when avoiding tire body 1 to slide and surpass test range, motor 7 and support 14's inner wall striking and impaired.

Wherein; the inner wall of the support 14 is fixedly connected with a graduated scale 27, the graduated scale 27 is located on one side of the mounting block 16 far away from the motor 7, the position of the starting point of the graduated scale 27 corresponds to the position of the proximity switch 15, and scales are arranged on the graduated scale 27, so that the sliding distance of the tire body 1 can be conveniently read.

The working principle is that the tire body 1 is moved, the hub 3 on the inner wall of the tire body 1 is aligned to the mounting rod 9, the hub 3 is sleeved on the mounting rod 9 until the inner wall of the hub 3 is clamped with the positioning plate 101, the fixing columns 102 on the positioning plate 101 are aligned to the mounting holes damaged by the hub 3, the fixing columns 102 are clamped to the inner wall of the mounting holes, the fixing disc 103 is mounted on the surface of the mounting rod 9, the fixing disc 103 is rotated to enable the fixing disc 103 to enter the inner wall of the hub 3, the hub 3 can be clamped through the fixing disc 103 and the positioning plate 101, the position of the hub 3 is fixed, the position of the tire body 1 is fixed, the tire body 1 is mounted on the mounting rod 9 through the fixing mechanism 10, test boards 113 made of different materials can be manufactured in advance according to a field needing to work, the test boards 113 are mounted on the inner wall of the mounting groove 112 and are replaced according to test requirements, and test results on different ground surfaces can be obtained, when the limiting plate 20 is completely clamped into the inner wall of the limiting groove 21, the positioning rod 23 moves to the lower part of the positioning rod 224, the spring 221 contracts to drive the guiding plate 223 to descend, the guiding plate 223 descends to drive the positioning rod 224 to descend, the positioning rod 224 is clamped to the inner wall of the positioning groove 23 to fix the position of the limiting plate 20, so that the position of the testing plate 113 is prevented from moving in the testing process, errors in the testing result are prevented, the electric telescopic rod 13 is started, the telescopic end of the electric telescopic rod 13 rises to drive the test board 111 to rise, the test board 111 drives the test board 113 to rise, the surface of the test board 113 is in close contact with the surface of the tire body 1, the motor 7 is started, the motor 7 drives the tire body 1 to roll on the test board 113 through the mounting rod 9, the tire body 1 has speed, the motor 7 and the mounting rack 6 are driven to move through the mounting rod 9 while the tire body 1 rolls on the test board 113, the mounting rack 6 moves to drive the guide block 5 to slide on the surface of the guide rail 4, the guide block 5 moves to drive the mounting block 16 to move, the mounting block 16 moves to drive the metal detection body 17 to move, when the metal detection body 17 reaches the lower part of the proximity switch 15, the proximity switch 15 senses the metal detection body 17 and then controls the power to be turned off, the motor 7 stops working, the output shaft of the motor 7 stops rotating, and the mounting rod 9 stops rotating, installation pole 9 makes wheel hub 3 stall through fixed establishment 10, thereby make tire body 1 stall, still have speed when tire body 1 stall, can continue to slide on surveying test panel 113, survey the frictional force between test panel 113 and the tire body 1 and make the tire slow down until stop motion, tire body 1 stall back, measure the gliding distance of tire body 1, the gliding distance of tire body 1 is shorter, the anti-skidding performance of tire body 1 is better, can carry out direct test indoor, avoid environment and weather influence test's result, make test result more accurate.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an engineering solid tyre antiskid capability test rack which characterized in that includes: the tyre comprises a tyre body (1) and a supporting table (2), wherein a wheel hub (3) is fixedly connected to the inner wall of the tyre body (1), a guide rail (4) is installed at the top of the supporting table (2), a guide block (5) is connected to the surface of the guide rail (4) in a sliding manner, a mounting frame (6) is installed at the top of the guide block (5), a motor (7) is fixedly connected to the inner wall of the mounting frame (6), a coupler (8) is arranged on an output shaft of the motor (7), a mounting rod (9) is installed at one end, far away from the motor (7), of the coupler (8), a fixing mechanism (10) is arranged on the surface of the mounting rod (9), the wheel hub (3) is sleeved on the surface of the mounting rod (9), the tyre body (1) is installed on the surface of the mounting rod (9) through the fixing mechanism (10), and a testing mechanism (11) is movably connected to the top of the supporting table (2), the equal fixedly connected with link (12) in both sides of accredited testing organization (11), the top fixedly connected with electric telescopic handle (13) of link (12) inner wall, the flexible end of electric telescopic handle (13) and the top fixed connection of accredited testing organization (11), the top fixedly connected with support (14) of brace table (2), guide rail (4), lead position piece (5), mounting bracket (6) and motor (7) and all be located the inside of support (14), proximity switch (15) are installed at the top of support (14) inner wall, the top fixedly connected with installation piece (16) of guide position piece (5), the top fixedly connected with metal detection body (17) of installation piece (16), the both sides of guide position piece (5) all are provided with buffer gear (28).

2. The skid resistance test bench for engineering solid tires according to claim 1, characterized in that the fixing mechanism (10) comprises a positioning plate (101), the positioning plate (101) is fixedly connected to the surface of the mounting rod (9), the positioning plate (101) is movably connected to the inner wall of the hub (3), the surface of the positioning plate (101) is fixedly connected with a plurality of fixing columns (102), the fixing columns (102) are distributed in an annular array manner by taking the center of the positioning plate (101) as the array center, the inner wall of the hub (3) is provided with mounting holes, the inner wall of the mounting holes is movably connected to the surface of the fixing columns (102), the surface of the mounting rod (9) is connected with a fixed disk (103) in a threaded manner, and the fixed disk (103) is movably connected to the inner wall of the mounting rod (9).

3. The skid resistance test bench for engineering solid tires according to claim 2, characterized in that the surface of the fixed disk (103) close to the hub (3) is fixedly connected with the skid proof pad (18), and the surface of the fixed disk (103) far away from the hub (3) is fixedly connected with the holding rod (19).

4. The engineering solid tire anti-skid performance test bench according to claim 1, characterized in that the test mechanism (11) comprises a test bench (111), a mounting groove (112) is formed in the front surface of the test bench (111), a test board (113) is movably connected to the inner wall of the mounting groove (112), the top of the test board (113) is movably connected with the surface of the tire body (1), two protection plates (29) are arranged on two sides of the tire body (1), and the two protection plates (29) are fixedly connected to the top of the test bench (111).

5. The anti-skid performance test bench for engineering solid tires according to claim 4, characterized in that limiting plates (20) are fixedly connected to both sides of the test board (113), limiting grooves (21) are formed in both sides of the inner wall of the mounting groove (112), the limiting plates (20) are movably connected with the limiting grooves (21), positioning mechanisms (22) are arranged at the top of the test mechanism (11), the number of the positioning mechanisms (22) is two, and the two positioning mechanisms (22) are symmetrically arranged by taking a central vertical plane passing through the test board (111) as a symmetrical plane.

6. The engineering solid tire anti-skid performance test bench according to claim 5, wherein the positioning mechanism (22) comprises a spring (221), a guide tube (222), a guide plate (223) and a positioning rod (224), the guide tube (222) and the spring (221) are both fixedly connected to the top of the test bench (111), the spring (221) is located inside the guide tube (222), the spring (221) is sleeved on the surface of the positioning rod (224), the positioning groove (23) is formed in the top of the limiting plate (20), the bottom end of the positioning rod (224) penetrates through the test bench (111) and is clamped with the inner wall of the positioning groove (23), the top of the positioning rod (224) and the top end of the spring (221) are both fixedly connected to the bottom of the guide plate (223), and the guide plate (223) is slidably connected to the inner wall of the guide tube (222).

7. The skid resistance test bench for engineering solid tires according to claim 5, characterized in that, the positioning mechanism (22) further comprises a limiting rod (24) and a limiting ring (25), the limiting rod (24) is fixedly connected to the top of the guide plate (223), the top end of the limiting rod (24) penetrates through the guide tube (222) and extends to the outside of the guide tube (222), the limiting ring (25) is screwed on the surface of the limiting rod (24), and the limiting ring (25) is movably connected to the top of the guide tube (222).

8. The anti-skid performance test bench for engineering solid tires according to claim 6, characterized in that the upper surfaces of the two limiting plates (20) are provided with slope surfaces (26), and the bottom ends of the positioning rods (224) are cambered surfaces.

9. The skid resistance test bench for engineering solid tires according to claim 1, characterized in that, the buffer mechanism (28) comprises two fixing plates (281) and buffer pads (282), the two fixing plates (281) are respectively located at two sides of the motor (7), the side of the fixing plate (281) is fixedly connected with the side of the guide block (5), and the buffer pads (282) are fixedly connected with the surface of the fixing plate (281) far away from the motor (7).

10. The skid resistance test bench for engineering solid tires according to claim 1, characterized in that a graduated scale (27) is fixedly connected to the inner wall of the support (14), the graduated scale (27) is located on the side of the mounting block (16) far away from the motor (7), and the position of the starting point of the graduated scale (27) corresponds to the position of the proximity switch (15).