A thermal spray coating wear resistance testing device

Abstract

The present invention relates to the field of wear resistance testing technology, and in particular to a thermal spray coating wear resistance testing device, comprising a testing table, a driving cavity is provided inside the testing table, an L-shaped groove connected to the driving cavity is provided on the top of the testing table, a cylinder is provided on the inner side of the L-shaped groove, a U-shaped table is fixedly connected to the top of the cylinder, a clamping mechanism is provided on the U-shaped table, a pair of support frames are fixedly connected to the top of the testing table, a transverse friction block and a longitudinal friction block are respectively fixedly connected to the bottom of the support frames, a driving mechanism is provided in the driving cavity, and the driving mechanism comprises an upper driving motor and a lower driving motor. Through the mutual cooperation of the above structures, the present invention can move the coating on the test module back and forth along the X-axis and Z-axis directions to perform friction testing, without the need for the tester to repeatedly clamp and change the direction of the test module, and can more realistically simulate the actual use scenario of being subjected to simultaneous friction in multiple directions, so that the test result is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of wear resistance testing, in particular to a thermal spray coating wear resistance testing device. Background Art

[0002] Thermal spraying refers to heating and melting the coating material, atomizing it into extremely fine particles with high-speed airflow, and spraying it onto the surface of the workpiece at a very high speed to form a coating. Different coating materials are selected according to needs to obtain one or more properties such as wear resistance, corrosion resistance, oxidation resistance, and heat resistance. The wear resistance test of thermal spray coatings is an important means to evaluate the quality and service life of coatings, so as to determine the performance of thermal spray coatings when subjected to friction and wear. Through testing, key indicators such as the wear resistance level, wear amount, and wear rate of the coating can be understood, so as to determine whether it meets the expected use requirements.

[0003] The prior art discloses a coating wear tester and a testing method thereof with publication number CN114577652A. The machine fixes a workpiece to a workpiece clamping and moving component so that the coating of the workpiece faces upward, fixes sandpaper to a friction component so that the sandpaper and the coating of the workpiece are parallel and abut against each other, and a reciprocating motion device drives the workpiece to reciprocate on a base so that the coating of the workpiece and the sandpaper repeatedly rub against each other. The machine is suitable for the wear of coated workpieces by gravel of different roughness, and can simulate the wear of mortar coatings by suspended sediment and bedload in waves with different friction coefficients. The machine can also apply loads of different weights to the friction component through a pressure regulating device to realize the wear test of the workpiece under different loads.

[0004] Although it can simulate the wear of the coating under different loads, there are still some defects in the actual testing process. Since the test equipment can only move in one direction to perform friction tests on the coating, the thermal spray coating will encounter friction in different directions when used in different places during actual use. Therefore, when the test direction needs to be changed during the test, the test plate needs to be re-clamped for testing, which greatly reduces the test efficiency of the device.

[0005] Therefore, a thermal spray coating wear resistance testing device is proposed to solve the above technical problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings existing in the background technology and to propose a thermal spray coating wear resistance testing device.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is: a thermal spray coating wear resistance test equipment, including a test table, a driving cavity is opened inside the test table, an L-shaped groove connected to the driving cavity is opened on the top of the test table, a cylinder is provided inside the L-shaped groove, a U-shaped table is fixedly connected to the top of the cylinder, a clamping mechanism is provided on the U-shaped table, a pair of support frames are fixedly connected to the top of the test table, a transverse friction block and a longitudinal friction block are fixedly connected to the bottom of the support frame, and a driving mechanism is provided in the driving cavity; The driving mechanism comprises an upper driving motor and a lower driving motor, the inner side of the driving cavity is laterally rotatably connected with a threaded rod, the bottom of the driving cavity and fixedly connected with a bottom plate located beside the threaded rod, a reciprocating screw rod is rotatably connected between the bottom plate and the inner side of the driving cavity, the upper driving motor is fixedly connected with a side wall of the detection platform, the output end of the upper driving motor passes through the inner side of the driving cavity and is fixedly connected with the side wall of the threaded rod, the lower driving motor is fixedly connected to the rear side of the detection platform, and the output end of the lower driving motor passes through the inner side of the driving cavity and is fixedly connected with the side wall of the reciprocating screw rod; The bottom of the cylinder is fixedly connected with a moving block, the bottom of the moving block is fixedly connected with a fixed plate, the side wall of the fixed plate is penetrated by a push rod for sliding connection, the side wall of the push rod is provided with an inclined groove, an upper spring is fixedly connected between the outer wall of the push rod and the side wall of the fixed plate, the outer wall of the threaded rod is penetrated by a thread to connect an upper slider, the outer wall of the reciprocating screw rod is penetrated by a thread to connect a lower slider, the top of the lower slider is fixedly connected with a lower push plate, the bottom of the driving chamber is provided with a right-angle block that fits with the inclined surface of the inclined groove, and the top of the upper slider is fixedly connected with an upper push plate.

[0008] In the above technical scheme, further, the right-angle blocks and the lower push plates are staggered, the side walls of the moving blocks are provided with lower T-blocks, a lower T-slot is opened on the inner side of the driving cavity and at a position corresponding to the lower T-block, and the lower T-block is slidably connected to the inner side of the lower T-slot, a pair of lower return springs are fixedly connected between the side walls of the lower T-blocks and the side walls of the moving blocks, and the lower T-blocks and the upper push plates are staggered, and the side walls of the moving blocks are fixedly connected with a lower limit plate for pushing the lower T-blocks to move.

[0009] In the above technical solution, further, the base plate is arranged next to the threaded rod at one-third of the distance and the shorter end is arranged on the side away from the upper drive motor, the right-angle block is arranged next to the center position of the reciprocating screw rod, and the threaded rod has the same length as the reciprocating screw rod.

[0010] In the above technical solution, further, an upper T-block is provided on the front side of the moving block, an upper T-slot is opened on the inner side of the driving cavity and at a position corresponding to the upper T-block, the upper T-block is slidably connected to the inner side of the upper T-slot, a pair of upper return springs are fixedly connected between the side wall of the upper T-block and the moving block, and an upper limit plate for pushing the upper T-block to slide is fixedly connected to the side wall of the upper push plate.

[0011] In the above technical solution, further, the clamping mechanism includes a screw rod, the screw rod is threadedly connected to the front side of the U-shaped platform, a clamping plate is slidably connected to the inner side of the U-shaped platform, and the side wall of the screw rod is rotatably connected to the side wall of the clamping plate.

[0012] In the above technical solution, further, an upper guide rod is fixedly connected to the inner side of the driving cavity and passes through the inner wall of the upper slider, and a lower guide rod is fixedly connected between the bottom plate and the inner side of the driving cavity and passes through the inner wall of the lower slider.

[0013] In the above technical solution, further, an upper travel switch is fixedly connected to the bottom of the drive cavity and close to the upper drive motor, and a lower travel switch is slidably connected to the bottom of the drive cavity and away from the upper drive motor. An L-shaped tooth groove is provided on the top of the detection table, and the lower travel switch and the side wall of the right-angle block are fixedly connected with an L-shaped rod and are located on the inner side of the L-shaped tooth groove, and the lower travel switch is electrically connected to the upper drive motor through a controller, and the upper travel switch is electrically connected to the upper drive motor through a timing controller.

[0014] In the above technical solution, further, a positioning frame is provided on the top of the detection platform and on the outer wall of the L-shaped rod, and a tooth plate meshing with the L-shaped tooth groove is slidably connected to the inner side of the positioning frame and passes through the top of the L-shaped rod, and a lower spring is fixedly connected between the bottom of the tooth plate and the outer wall of the L-shaped rod.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the setting of the driving mechanism, the coating on the test module can be moved back and forth along the X-axis and Z-axis directions for friction testing. There is no need for the tester to repeatedly clamp and change the direction of the test module. It can also simulate more realistically the actual use scenario of simultaneous friction in multiple directions, making the test results more accurate.

[0016] 2. Through the cooperation of L-shaped tooth grooves, L-shaped rods and tooth plates, the friction distance in different directions can be changed according to the experimental test requirements, further improving the test range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the front three-dimensional structure of the testing device of the present invention; Figure 2 The appended Figure 1 A schematic diagram of the partially enlarged structure at center A; Figure 3 It is a schematic diagram of the three-dimensional structure of the testing device of the present invention in a top view and in full section; Figure 4 It is a schematic diagram of the overall appearance structure of the driving mechanism of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the detection platform of the present invention in a top view and in full section; Figure 6 It is a schematic diagram of the full-cut side three-dimensional structure of the detection platform of the present invention; Figure 7 The appended Figure 6 A schematic diagram of the partially enlarged structure at B in the middle; Figure 8 It is a schematic diagram of the three-dimensional structure of the moving block of the present invention when viewed from above.

[0018] In the figure: 1. test table; 2. drive chamber; 3. L-shaped groove; 4. cylinder; 5. U-shaped table; 6. support frame; 7. horizontal friction block; 8. longitudinal friction block; 9. upper drive motor; 10. lower drive motor; 11. threaded rod; 12. bottom plate; 13. reciprocating screw rod; 14. moving block; 15. fixed plate; 16. push rod; 17. inclined groove; 18. upper slider; 19. lower slider; 20. lower push plate; 21. upper spring; 22. right angle block; 2 3. Upper push plate; 24. Lower T-block; 25. Lower T-slot; 26. Lower return spring; 27. Lower limit plate; 28. Upper T-block; 29. ​​Upper T-slot; 30. Upper return spring; 31. Upper limit plate; 32. Screw; 33. Clamping plate; 34. Upper guide rod; 35. Lower guide rod; 36. Upper travel switch; 37. Lower travel switch; 38. L-shaped tooth groove; 39. L-shaped rod; 40. Positioning frame; 41. Tooth plate; 42. Lower spring. DETAILED DESCRIPTION

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0020] like Figure 1-Figure 8 A thermal spray coating wear resistance test device shown in the figure comprises a test table 1, a driving cavity 2 is provided inside the test table 1, an L-shaped groove 3 connected to the driving cavity 2 is provided on the top of the test table 1, a cylinder 4 is provided inside the L-shaped groove 3, a U-shaped table 5 is fixedly connected to the top of the cylinder 4, a clamping mechanism is provided on the U-shaped table 5, a pair of support frames 6 are fixedly connected to the top of the test table 1, a transverse friction block 7 and a longitudinal friction block 8 are fixedly connected to the bottom of the support frame 6, and a driving mechanism is provided in the driving cavity 2; The clamping mechanism includes a screw 32, the screw 32 is threadedly connected to the front side of the U-shaped platform 5, the inner side of the U-shaped platform 5 is slidably connected to the clamping plate 33, and the side wall of the screw 32 is rotatably connected to the side wall of the clamping plate 33; The driving mechanism includes an upper driving motor 9 and a lower driving motor 10. A threaded rod 11 is rotatably connected to the inner side of the driving chamber 2 in a transverse direction. A bottom plate 12 is fixedly connected to the bottom of the driving chamber 2 and located beside the threaded rod 11. A reciprocating screw rod 13 is rotatably connected between the bottom plate 12 and the inner side of the driving chamber 2. The upper driving motor 9 is fixedly connected to the side wall of the detection platform 1. The output end of the upper driving motor 9 passes through the inner side of the driving chamber 2 and is fixedly connected to the side wall of the threaded rod 11. The lower driving motor 10 is fixedly connected to the rear side of the detection platform 1. The output end of the lower driving motor 10 passes through the inner side of the driving chamber 2 and is fixedly connected to the side wall of the reciprocating screw rod 13. The bottom of the cylinder 4 is fixedly connected with a moving block 14, the bottom of the moving block 14 is fixedly connected with a fixed plate 15, the side wall of the fixed plate 15 penetrates and is slidably connected with a push rod 16, the side wall of the push rod 16 is provided with an inclined groove 17, an upper spring 21 is fixedly connected between the outer wall of the push rod 16 and the side wall of the fixed plate 15, an upper slider 18 is threadedly connected to the outer wall of the threaded rod 11, a lower slider 19 is threadedly connected to the outer wall of the reciprocating screw rod 13, a lower push plate 20 is fixedly connected to the top of the lower slider 19, a right-angle block 22 that fits the inclined surface of the inclined groove 17 is provided at the bottom of the driving chamber 2, and an upper push plate 23 is fixedly connected to the top of the upper slider 18; The right-angle blocks 22 and the lower push plate 20 are staggered to avoid hindering the continued movement of the lower push plate 20. A lower T-block 24 is provided on the side wall of the moving block 14. A lower T-slot 25 is provided on the inner side of the driving chamber 2 and at a position corresponding to the lower T-block 24. The lower T-block 24 is slidably connected to the inner side of the lower T-slot 25. A pair of lower return springs 26 are fixedly connected between the side walls of the lower T-block 24 and the side walls of the moving block 14. The lower T-block 24 and the upper push plate 23 are staggered. A lower limit plate 27 for pushing the lower T-block 24 to move is fixedly connected to the side wall of the moving block 14. The bottom plate 12 is arranged next to the threaded rod 11 at one-third of the distance and the shorter end is arranged on the side away from the upper drive motor 9. The right-angle block 22 is arranged next to the center position of the reciprocating screw rod 13, and the threaded rod 11 has the same length as the reciprocating screw rod 13. An upper T-block 28 is provided at the front side of the moving block 14, an upper T-slot 29 is provided at the inner side of the driving cavity 2 and at a position corresponding to the upper T-block 28, the upper T-block 28 is slidably connected to the inner side of the upper T-slot 29, a pair of upper return springs 30 are fixedly connected between the side wall of the upper T-block 28 and the moving block 14, and an upper limit plate 31 for pushing the upper T-block 28 to slide is fixedly connected to the side wall of the upper push plate 23; When conducting a friction test on the thermal spray coating, the thermal spray coating is first sprayed on the test module, and then the dried test module is placed on the U-shaped table 5, and then the screw 32 is rotated to move inward, thereby pushing the clamping plate 33 to move, and the test module is clamped between the clamping plate 33 and the inner side of the U-shaped table 5, and then the upper drive motor 9 and the lower drive motor 10 can be controlled to start at the same time, so that the threaded rod 11 and the reciprocating screw rod 13 are rotated, driving the threaded upper slider 18 and the lower slider 19 to move at the same time. At this time, the upper slider 18 and the lower slider 19 are located at the initial positions of the ends of the threaded rod 11 and the reciprocating screw rod 13, so that the lower push plate 20 will first touch the push rod 16, driving The fixed plate 15, the moving block 14 and the U-shaped table 5 move, thereby driving the test module to move to the bottom of the longitudinal friction block 8 for friction testing, and then the push rod 16 is pushed to the side of the right-angle block 22 by the lower push plate 20, and the lower T-shaped block 24 is pushed to slide in the lower T-shaped groove 25 by the lower limit plate 27, and the upper reset spring 30 is stretched at the same time. Since the inclined groove 17 fits the inclined surface of the right-angle block 22, the push rod 16 slides on the right-angle block 22 through the extrusion of the lower push plate 20, and then the right-angle block 22 is pushed out of the side of the lower push plate 20, and the thrust of the lower push plate 20 is lost, so that under the pulling force of the upper reset spring 30, the moving block 14 and the U-shaped table 5 are pulled to reset; Since the moving block 14 is at one-third of the threaded rod 11, after the moving block 14 is reset, the upper slider 18 will just move to the side of the upper T-block 28, and then, driven by the upper slider 18 and the upper limit plate 31, the moving block 14 and the U-shaped table 5 are driven to move, and at the same time, the upper T-block 28 is driven to slide on the inner side of the upper T-slot 29, and the lower reset spring 26 is stretched, so that the test module is moved to the bottom of the transverse friction block 7 to perform a transverse friction test, and then the upper slider 18 and the lower slider 19 are both moved to the ends of the threaded rod 11 and the reciprocating screw 13, and then the lower slider 19 is driven to move back under the action of the reciprocating screw 13, and at the same time, the upper slider 18 touches the lower travel switch 37, and the lower travel switch 37 transmits a signal to the controller, and the controller controls The upper drive motor 9 is reversed to drive the upper slider 18 to reset, thereby losing the thrust on the moving block 14, and then the test module is reset under the pulling force of the lower reset spring 26. Then, when the lower push plate 20 is reset and moved to the side of the push rod 16, the inclined groove 17 will be squeezed to make the push rod 16 slide and compress the upper spring 21. Then, when the lower push plate 20 is moved away, the push rod 16 is pushed to reset by the elastic force of the upper spring 21. This is repeated, and the coating on the test module can be moved back and forth along the X-axis and Z-axis directions for friction testing. It can more realistically simulate the actual usage scenario of being subjected to friction in multiple directions at the same time, making the test results more accurate. Finally, after the test is completed, the screw 32 is rotated in the opposite direction to release the fixation of the test module, and the test module is taken out to test the coating.

[0021] In order to improve the stability of the device during operation, an upper guide rod 34 is fixedly connected to the inner side of the driving chamber 2 and passes through the inner wall of the upper slider 18. A lower guide rod 35 is fixedly connected between the bottom plate 12 and the inner side of the driving chamber 2 and passes through the inner wall of the lower slider 19. Through the arrangement of the upper guide rod 34 and the lower guide rod 35, a guiding role can be played when the threaded rod 11 or the reciprocating screw rod 13 rotates to drive the upper slider 18 or the lower slider 19 to move, thereby preventing the threaded rod 11 or the reciprocating screw rod 13 from driving the upper slider 18 or the lower slider 19 to rotate together, thereby improving the stability of the device during operation.

[0022] In order to be able to change the friction distance in different directions according to the experimental test requirements, an upper travel switch 36 is fixedly connected to the bottom of the drive chamber 2 and close to the upper drive motor 9, and a lower travel switch 37 is slidably connected to the bottom of the drive chamber 2 and away from the upper drive motor 9. An L-shaped tooth groove 38 is provided on the top of the detection table 1. It should be noted that the adjustment position of the right-angle block 22 can only be adjusted to the position below the center of the reciprocating screw rod 13 to avoid affecting the upper push plate 23 to drive the moving block 14 to move. The lower travel switch 37 and the side wall of the right-angle block 22 are fixedly connected with an L-shaped rod 39 and are located on the inner side of the L-shaped tooth groove 38, and the lower travel switch 37 is electrically connected to the upper drive motor 9 through a controller, and the upper travel switch 36 is electrically connected to the upper drive motor 9 through a timing controller; By setting the upper travel switch 36 and the lower travel switch 37, when the upper driving motor 9 drives the upper slider 18 to move and touch the lower travel switch 37, the lower travel switch 37 then transmits a signal to the controller, and the controller controls the upper driving motor 9 to rotate in the opposite direction, which can drive the upper slider 18 to move back. Then, when the upper slider 18 is reset and touches the upper travel switch 36, a signal is transmitted to the timing controller, and then the timing controller controls the upper driving motor 9 to work while the lower slider 19 is reset, thereby ensuring that the upper slider 18 and the lower slider 19 can move at the same time, avoiding a short adjustment distance between the upper travel switch 36 and the lower travel switch 37, gradually shortening the moving time of the upper slider 18, and affecting the coordination between the upper slider 18 and the lower slider 19; A positioning frame 40 is provided on the top of the test bench 1 and on the outer wall of the L-shaped rod 39. A tooth plate 41 meshing with the L-shaped tooth groove 38 is slidably connected to the inner side of the positioning frame 40 and penetrates the top of the L-shaped rod 39. A lower spring 42 is fixedly connected between the bottom of the tooth plate 41 and the outer wall of the L-shaped rod 39. When it is necessary to change the friction test distance of the test module in the X-axis or Z-axis direction, press the corresponding tooth plate 41 to move downward in the positioning frame 40, and then compress the lower spring 42 to slide the tooth plate 41 out of the engagement position with the L-shaped tooth groove 38, so as to release the position restriction of the corresponding L-shaped rod 39, and then slide the positioning frame 40 to drive the L-shaped rod 39 to move, thereby driving the corresponding lower travel switch 37 or right-angle block 22 to move, so as to change the friction test distance of the test module in the X-axis or Z-axis direction.

[0023] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A thermal spray coating wear resistance testing device, comprising a testing platform (1), characterized in that: The detection platform (1) has a driving cavity (2) formed inside, an L-shaped groove (3) connected to the driving cavity (2) formed on the top of the detection platform (1), a cylinder (4) formed inside the L-shaped groove (3), a U-shaped platform (5) fixedly connected to the top of the cylinder (4), a clamping mechanism provided on the U-shaped platform (5), a pair of support frames (6) fixedly connected to the top of the detection platform (1), a transverse friction block (7) and a longitudinal friction block (8) fixedly connected to the bottom of the support frames (6), and a driving mechanism provided in the driving cavity (2); The driving mechanism comprises an upper driving motor (9) and a lower driving motor (10); a threaded rod (11) is rotatably connected to the inner side of the driving chamber (2); a bottom plate (12) is fixedly connected to the bottom of the driving chamber (2) and located next to the threaded rod (11); a reciprocating screw rod (13) is rotatably connected between the bottom plate (12) and the inner side of the driving chamber (2); the upper driving motor (9) is fixedly connected to the side wall of the detection platform (1); an output end of the upper driving motor (9) passes through the inner side of the driving chamber (2) and is fixedly connected to the side wall of the threaded rod (11); the lower driving motor (10) is fixedly connected to the rear side of the detection platform (1); and an output end of the lower driving motor (10) passes through the inner side of the driving chamber (2) and is fixedly connected to the side wall of the reciprocating screw rod (13); The bottom of the cylinder (4) is fixedly connected to a moving block (14), the bottom of the moving block (14) is fixedly connected to a fixed plate (15), the side wall of the fixed plate (15) is penetrated by a push rod (16) for sliding connection, the side wall of the push rod (16) is provided with an inclined groove (17), an upper spring (21) is fixedly connected between the outer wall of the push rod (16) and the side wall of the fixed plate (15), an upper slider (18) is threadedly connected to the outer wall of the threaded rod (11), a lower slider (19) is threadedly connected to the outer wall of the reciprocating screw rod (13), the top of the lower slider (19) is fixedly connected to a lower push plate (20), the bottom of the driving chamber (2) is provided with a right-angle block (22) that fits the inclined surface of the inclined groove (17), and the top of the upper slider (18) is fixedly connected to an upper push plate (23).

2. A thermal spray coating wear resistance testing device according to claim 1, characterized in that: The right-angle blocks (22) and the lower push plate (20) are arranged alternately, and the side wall of the movable block (14) is provided with a lower T-block (24). A lower T-slot (25) is opened on the inner side of the driving cavity (2) and at a position corresponding to the lower T-block (24), and the lower T-block (24) is slidably connected to the inner side of the lower T-slot (25). A pair of lower return springs (26) are fixedly connected between the side wall of the lower T-block (24) and the side wall of the movable block (14), and the lower T-block (24) and the upper push plate (23) are arranged alternately, and the side wall of the movable block (14) is fixedly connected with a lower limit plate (27) for pushing the lower T-block (24) to move.

3. A thermal spray coating wear resistance testing device according to claim 2, characterized in that: The bottom plate (12) is arranged beside the threaded rod (11) at one third of the length, and the shorter end is arranged on the side away from the upper drive motor (9), the right-angle block (22) is arranged beside the center position of the reciprocating screw rod (13), and the threaded rod (11) and the reciprocating screw rod (13) have the same length.

4. The thermal spray coating wear resistance testing device according to claim 1, characterized in that: An upper T-shaped block (28) is provided on the front side of the moving block (14); an upper T-shaped groove (29) is provided on the inner side of the driving cavity (2) and at a position corresponding to the upper T-shaped block (28); the upper T-shaped block (28) is slidably connected to the inner side of the upper T-shaped groove (29); a pair of upper return springs (30) are fixedly connected between the side wall of the upper T-shaped block (28) and the moving block (14); and an upper limit plate (31) for pushing the upper T-shaped block (28) to slide is fixedly connected to the side wall of the upper push plate (23).

5. The thermal spray coating wear resistance testing device according to claim 1, characterized in that: The clamping mechanism comprises a screw rod (32), the screw rod (32) being threadedly connected to the front side of the U-shaped platform (5), a clamping plate (33) being slidably connected to the inner side of the U-shaped platform (5), and a side wall of the screw rod (32) being rotatably connected to a side wall of the clamping plate (33).

6. The thermal spray coating wear resistance testing device according to claim 1, characterized in that: An upper guide rod (34) is fixedly connected to the inner side of the drive cavity (2) and is arranged through the inner side wall of the upper slider (18); a lower guide rod (35) is fixedly connected between the bottom plate (12) and the inner side of the drive cavity (2) and is arranged through the inner side wall of the lower slider (19).

7. The thermal spray coating wear resistance testing device according to claim 1, characterized in that: An upper travel switch (36) is fixedly connected to the bottom of the drive chamber (2) and on a side close to the upper drive motor (9), and a lower travel switch (37) is slidably connected to the bottom of the drive chamber (2) and on a side away from the upper drive motor (9). An L-shaped tooth groove (38) is provided on the top of the detection table (1), and an L-shaped rod (39) is fixedly connected to the lower travel switch (37) and the side wall of the right-angle block (22) and is located inside the L-shaped tooth groove (38). The lower travel switch (37) is electrically connected to the upper drive motor (9) via a controller, and the upper travel switch (36) is electrically connected to the upper drive motor (9) via a timing controller.

8. The thermal spray coating wear resistance testing device according to claim 7, characterized in that: A positioning frame (40) is provided at the top of the detection platform (1) and on the outer wall of the L-shaped rod (39); a tooth plate (41) meshing with the L-shaped tooth groove (38) is slidably connected to the inner side of the positioning frame (40) and is arranged to pass through the top of the L-shaped rod (39); a lower spring (42) is fixedly connected between the bottom of the tooth plate (41) and the outer wall of the L-shaped rod (39).

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