Fretting abrasion experiment device

Abstract

The invention provides a fretting abrasion experiment device which comprises an experiment kettle, a sample mounting assembly and a loading assembly, and the experiment kettle comprises an experiment cavity; the sample mounting assembly is arranged in the experiment chamber and is used for clamping a sample; the loading assembly is arranged in the experiment chamber, and the loading assembly is positioned above the sample mounting assembly; the loading assembly comprises a supporting part and a loading part, the supporting part is detachably connected with the side wall of the experimental kettle, the loading part is mounted on the supporting part, a plate sample is arranged at one end, facing the sample, of the loading part, and the loading part moves along a preset path so as to apply a load to the sample on the sample mounting assembly. The loading assembly is designed in the experiment kettle, and the normal load is applied to the sample mounted on the sample mounting assembly through the loading assembly, so that the fretting abrasion experiment under the working condition of the small-range normal load is realized.

Description

Technical Field

[0001] The present application belongs to the technical field of micro-motion abrasion experiments, and in particular relates to a micro-motion abrasion experiment device. Background Art

[0002] With the development of nuclear energy technology, developers are paying more and more attention to the research of fretting corrosion of materials. In pressurized water reactors, fretting corrosion between fuel rods and clamping racks, and fretting corrosion between evaporator heat transfer tubes and anti-vibration strips are the focus of developers. These devices are operated under high temperature and high pressure coolants. Abrasion damage of fuel rods or evaporator heat transfer tubes will seriously affect the safe operation of the reactor.

[0003] At present, there are many experimental devices for the study of fretting wear of these devices, and the relevant experimental devices have the functions of tangential fretting wear and punching fretting wear. However, during the experiment, there is friction between the connecting rod and the supporting structure of the force sensor in the relevant experimental device, and it is difficult to accurately identify the size and eliminate these frictions; for large loads, the friction between the connecting rod and the supporting structure of the force sensor has little effect on the test accuracy, which is within the allowable range of the sample accuracy error; due to the above defects of the relevant abrasion experimental device, it is not suitable for fretting wear conditions with small-range normal loads (3N-20N). Summary of the invention

[0004] Therefore, the technical problem to be solved by the present application is to provide a micro-abrasion experimental device to solve at least one of the above problems existing in the prior art.

[0005] In order to solve the above problems, the present application provides a micro-abrasion experimental device, including an experimental kettle, a sample mounting assembly and a loading assembly, wherein the experimental kettle includes an experimental chamber; the sample mounting assembly is arranged in the experimental chamber for clamping the sample; the loading assembly is arranged in the experimental chamber, and the loading assembly is located above the sample mounting assembly; the loading assembly includes a supporting part and a loading part, the supporting part is detachably connected to the side wall of the experimental kettle, the loading part is installed on the supporting part, a plate sample is arranged on one end of the loading part toward the sample, and the loading part moves along a preset path to apply a load to the sample on the sample mounting assembly.

[0006] Optionally, the support part includes a support beam, which is detachably connected to the side wall of the experimental kettle. The middle part of the surface of the support beam protrudes outward to form a bump, and the bump is provided with a mounting hole with two ends passing through, and the loading part is arranged in the mounting hole.

[0007] Optionally, the loading part includes a sliding sleeve, which is arranged in the mounting hole and fixed relative to the mounting hole. A shaft rod is arranged in the sliding sleeve and slides relative to the sliding sleeve. Both ends of the shaft rod extend to the outside of the mounting hole, one end of which is provided with an upper loading plate, and a loading weight is arranged on the upper loading plate. A lower loading plate is arranged at the other end of the shaft rod, and a plate sample is arranged on the lower loading plate.

[0008] Optionally, the loading part also includes a stud, which includes a connecting end and a limiting end. A first screw hole is provided on the upper loading plate, and a second screw hole is provided on the end surface of the shaft rod on which one end of the upper loading plate is installed, and the first screw hole corresponds to the second screw hole one by one. The connecting end of the stud passes through the first screw hole of the upper loading plate and the second screw hole of the shaft rod in sequence to fix the upper loading plate to the shaft rod. The limiting end of the stud is located on the outside of the upper loading plate, and a through hole is provided on the loading weight. The limiting end of the stud passes through the through hole of the loading weight so that the loading weight is set on the upper loading plate.

[0009] Optionally, the inner side wall of the experimental kettle is provided with supporting ears, and both ends of the support beam are respectively connected to the corresponding supporting ears to install the loading assembly in the experimental chamber.

[0010] Optionally, the sample mounting assembly includes a mounting platform, a sample mounting base is provided on the top of the mounting platform, the sample mounting base is used to clamp the sample, and the side walls of the mounting platform protrude outward to form legs.

[0011] Optionally, the experimental kettle also includes a driven shaft, one end of which passes through the side wall of the experimental kettle and extends into the experimental chamber, and a third threaded hole is provided at the end, and a fourth threaded hole is provided on the leg, and a fastening bolt is screwed to the fourth threaded hole and the third threaded hole in sequence so that the leg of the sample mounting assembly is installed on the driven shaft.

[0012] Optionally, a fifth threaded hole is provided on the sample mounting assembly, an adjusting bolt is provided in the fifth threaded hole, and a bottom end of the adjusting bolt abuts against the driven shaft.

[0013] Optionally, the experimental kettle also includes a position regulator, which includes an adjusting end and a mounting end. The mounting end of the position regulator extends through the side wall of the experimental kettle into the experimental chamber. The position regulator rotates relative to the experimental kettle. The mounting end of the position regulator is provided with a displacement sensor for obtaining the position of the sample.

[0014] Optionally, the experimental device further comprises an excitation shaft, and the excitation shaft passes through the experimental kettle and is connected to the sample mounting assembly.

[0015] Beneficial Effects

[0016] The micro-motion abrasion experimental device provided in the embodiment of the present invention realizes a high-temperature and high-pressure tangential micro-motion abrasion experiment under a small-range normal load condition by designing a loading assembly in the experimental kettle. This solves the problem in the prior art that micro-motion abrasion experiments under small-range load conditions cannot be performed due to the friction between the connecting rod and the supporting structure of the force sensor, and these frictions are difficult to accurately identify and eliminate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a fretting abrasion experimental device according to an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a sample installation assembly of a fretting abrasion experimental device according to an embodiment of the present application;

[0019] Figure 3 Schematic diagram of the loading assembly of the micro-abrasion experimental device according to an embodiment of the present application.

[0020] The reference numerals are as follows:

[0021] 1-experimental kettle; 101-kettle cover;

[0022] 2- Heating component;

[0023] 3-sample mounting assembly; 301-sample; 302-pressure rod; 303-sample mounting base; 304-mounting table; 305-adjusting bolt; 306-fastening bolt;

[0024] 4- loading assembly; 401- support beam; 402- shaft; 403- bearing cover plate; 404- plate specimen; 405- lower loading plate; 406- upper loading plate; 407- stud; 408- loading weight;

[0025] 5-excitation axis;

[0026] 6- first cooling water jacket;

[0027] 7- first driven shaft;

[0028] 8- Second driven shaft;

[0029] 9- Second cooling water jacket;

[0030] 10- third cooling water jacket;

[0031] 11- Displacement sensor;

[0032] 12-position regulator;

[0033] 13- fourth cooling water jacket;

[0034] 14-circulating water inlet pipe;

[0035] 15-Circulating water outlet pipe. DETAILED DESCRIPTION

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] See also Figures 1 to 3 As shown, according to an embodiment of the present application, a micro-motion abrasion experimental device is provided, comprising:

[0041] The experimental kettle 1 comprises an experimental chamber;

[0042] A sample mounting assembly 3, which is disposed in the experimental chamber and is used to clamp a sample 301;

[0043] A loading component 4, which is disposed in the experimental chamber and is located above the sample mounting component 3;

[0044] The loading assembly 4 includes a supporting part and a loading part. The supporting part is detachably connected to the side wall of the experimental kettle 1. The loading part is installed on the supporting part. A plate sample 404 is provided at one end of the loading part facing the sample 301. The loading part moves along a preset path to apply a load to the sample 301 on the sample mounting assembly 3 through the plate sample 404.

[0045] By designing a loading component 4 in the experimental kettle 1, a normal load is applied to the sample 301 installed on the sample mounting component 3 through the loading component 4, thereby realizing a high-temperature and high-pressure tangential micro-motion wear experiment under a small-range normal load condition. This solves the problem in the existing related technology that due to the friction between the connecting rod and the supporting structure of the force sensor, it is difficult to accurately identify the size and eliminate this friction, making it impossible to carry out micro-motion wear experiments under small-range load conditions.

[0046] The experimental kettle 1 includes a kettle body and a kettle cover 101. The kettle body is a closed-end and open-end structure. The open end of the kettle body is connected to the kettle cover 101 by screws to form a sealed experimental chamber. The design of the open experimental kettle 1 facilitates the installation and removal of the sample 301.

[0047] Specifically, in this embodiment, the cross-sectional shape of the kettle body is a circular ring, the shape of the kettle cover 101 is circular, and the lower surface of the kettle cover 101 protrudes and fits into the inside of the kettle body. At the same time, the diameter of the kettle cover 101 is the same as the diameter of the kettle body, ensuring the sealing between the kettle cover 101 and the kettle body.

[0048] Among them, two water inlets are opened on the closed end surface of the experimental kettle 1, one of which is connected to the circulating water inlet pipe 14, and the other is connected to the circulating water outlet pipe 15. The circulation of high-pressure circulating water in the experimental kettle 1 is realized through the circulating water inlet 14 and the circulating water outlet pipe 15.

[0049] Specifically, the experimental reactor 1 is a high pressure autoclave.

[0050] The outer peripheral side of the experimental kettle 1 is provided with a heating component 2, and the heating component 2 is used to heat and keep the circulating water in the experimental kettle 1, so that the experimental kettle 1 maintains a high temperature and high pressure environment.

[0051] Among them, the preset path is a moving path in the same direction as the axis of the experimental kettle 1.

[0052] The support part includes a support beam 401, which is detachably connected to the side wall of the experimental kettle 1. The middle part of the surface of the support beam 401 protrudes outward to form a convex block, and the convex block is provided with a mounting hole with two ends through, and the loading part is arranged in the mounting hole. The support part is used to support the loading part on the one hand, and to provide a moving space for the loading part on the other hand.

[0053] There are two mounting holes, and a loading part is arranged in each mounting hole.

[0054] The loading part includes a sliding sleeve, which is arranged in the mounting hole and fixed relative to the mounting hole. An axle rod 402 is arranged in the sliding sleeve, and the axle rod 402 slides relative to the sliding sleeve. Both ends of the axle rod 402 extend to the outside of the mounting hole, and an upper loading plate 406 is arranged at one end, and a loading weight 408 is arranged on the upper loading plate 406. A lower loading plate 405 is arranged at the other end of the axle rod 402, and a plate sample 404 is arranged on the lower loading plate 405.

[0055] Among them, the sliding sleeve is arranged in the mounting hole, and the sliding sleeve is fixed relative to the mounting hole, that is, a bearing cover plate 403 is arranged on the top of the protrusion, and the sliding sleeve is fixed on the bearing cover plate 403 by bolts, and the bearing cover plate 403 is fixed to the top of the protrusion by bolts, and the fixing of the sliding sleeve relative to the mounting hole is realized by the bearing cover plate 403; both ends of the shaft rod 402 extend to the outside of the mounting hole, and one end thereof is provided with an upper loading plate 406, that is, on the one hand, before the loading assembly 4 is installed in the experimental kettle 1, the upper loading plate 406 prevents the shaft rod 402 from slipping off the sliding sleeve, and plays a role of limiting the shaft rod 402; on the other hand, the upper loading plate 407 is used to support the loading weight 408.

[0056] The size of the plate sample 404 should be larger than the diameter of the sample 301 to ensure that the sample 301 does not separate from the plate sample 404 when it reciprocates in the horizontal direction under the action of the exciting force, thereby ensuring the stability of the applied load.

[0057] The loading part also includes a stud 407, which includes a connecting end and a limiting end. A first screw hole is provided on the upper loading plate 406, and a second screw hole is provided on the end surface of the shaft 402 on which the upper loading plate 406 is installed, and the first screw hole corresponds to the second screw hole one by one. The connecting end of the stud 407 passes through the first screw hole of the upper loading plate 406 and the second screw hole of the shaft 402 in sequence to fix the upper loading plate 406 on the shaft 402. The limiting end of the stud 407 is located on the outside of the upper loading plate 406. A through hole is provided on the loading weight 408. The limiting end of the stud 407 passes through the through hole of the loading weight 408 so that the loading weight 408 is set on the upper loading plate 406.

[0058] The number of the studs 407 is the same as the number of the mounting holes, that is, there are two studs 407. The studs 407, on the one hand, play the role of connecting the upper loading plate 406 to the shaft 402, and on the other hand, the loading weight 408 is sleeved on the studs 407 to limit the position of the loading weight 408, ensuring that the loading weight 408 is always on the upper loading plate 406 when the exciting force is applied.

[0059] In actual use, the load applied to the tube sample 301 should be the combined force of the self-weight and buoyancy of the plate sample 404, the lower loading plate 405, the shaft 402, the upper loading plate 406, the stud 407 and the loading weight 408.

[0060] The inner wall of the experimental kettle 1 is provided with supporting ears, and both ends of the support beam 401 are respectively connected to the corresponding supporting ears, so as to install the loading assembly 4 in the experimental chamber.

[0061] The two ends of the support beam 401 are respectively provided with U-shaped holes, and screws pass through the U-shaped holes and the preset holes on the lugs to fix the support beam 401 on the lugs. The design of the U-shaped holes can achieve fine adjustment of the position of the support beam 401, making it easy to install the support beam 401 on the lugs.

[0062] The sample mounting assembly 3 comprises a mounting platform 304 , a sample mounting base 303 is arranged on the top of the mounting platform 304 , the sample mounting base 303 is used to clamp the sample 301 , and the side wall of the mounting platform 304 protrudes outward to form a leg.

[0063] Among them, a sample mounting base 303 is arranged on the top of the mounting platform 304. Here, the mounting base 303 and the mounting platform 304 are connected by bolts, and a groove is opened on the upper surface of the mounting base 303, and the sample 301 is placed in the groove. In this embodiment, the sample 301 is a tube sample, and a pressure rod 302 is arranged in the sample 301. The sample 301 is clamped on the sample mounting base 303 by the pressure rod 302.

[0064] Specifically, in this embodiment, the groove is a trapezoidal groove, which forms three line contacts with the sample 301, thereby improving the stability of the sample 301 in the groove.

[0065] The side walls of the mounting platform 304 protrude outward to form legs, that is, the legs extend outward along one of the side walls of the mounting platform 304. In this embodiment, the number of the legs is two.

[0066] The experimental kettle 1 also includes a driven shaft, one end of which passes through the side wall of the experimental kettle 1 and extends into the experimental chamber, and a third threaded hole is provided at the end, and a fourth threaded hole is provided on the leg, and the fastening bolt 307 is screwed with the fourth threaded hole and the third threaded hole in sequence, so that the leg of the sample mounting assembly 3 is mounted on the driven shaft. The driven shaft is connected to the sample mounting assembly 3, and when an exciting force is applied to the sample mounting assembly 3, since the driven shaft has a degree of freedom of movement relative to the experimental kettle 1, the sample mounting assembly 3 converts the exciting force into a horizontal reciprocating motion along the driven shaft. The driven shaft is used to limit the motion trajectory of the sample mounting assembly 3 and ensure that the sample mounting assembly 3 only has a horizontal reciprocating motion.

[0067] There are two driven shafts, namely the first driven shaft 7 and the second driven shaft 8, which are respectively connected to the corresponding legs on the mounting platform 304. This further improves the stability of the horizontal movement of the sample mounting assembly 3 and also prevents the sample mounting assembly 3 from having a tendency to flip.

[0068] Specifically, a second water-cooling jacket 9 is sleeved on the first driven shaft 7, and one end of the second water-cooling jacket 9 is welded to the outer peripheral side of the experimental kettle 1 to ensure that when the first driven shaft 7 moves horizontally relative to the experimental kettle 1, the circulating water of the experimental kettle 1 does not leak. At the same time, the second water-cooling jacket 9 can also cool the first driven shaft 7.

[0069] A third water-cooling jacket 10 is sleeved on the second driven shaft 8 , and one end of the third water-cooling jacket 10 is welded to the outer peripheral side of the experimental kettle 1 to ensure that when the first driven shaft 8 moves horizontally relative to the experimental kettle 1 , the circulating water of the experimental kettle 1 does not leak. At the same time, the third water-cooling jacket 10 can also cool the second driven shaft 8 .

[0070] The sample installation assembly 3 is provided with a fifth threaded hole, in which an adjusting bolt 305 is arranged, and the bottom end of the adjusting bolt 305 abuts against the driven shaft. The adjusting bolt 305 is used to support the height position of the sample installation assembly 3.

[0071] In the specific implementation process, the position of the sample mounting assembly 3 is first determined. Since the installation position of the driven shaft is fixed, after the position of the sample mounting assembly 3 is determined, there may be a height difference between the legs of the sample mounting assembly 3 and the surface of the driven shaft at one end in the experimental kettle 1. Therefore, the adjusting bolt 305 is screwed on the leg, and the adjusting bolt 305 is made to rest on the surface of the driven shaft. The height difference between the legs of the sample mounting assembly 3 and the surface of the driven shaft is limited by the adjusting bolt 305 to ensure that the height difference between the two remains unchanged during the micro-abrasion process.

[0072] The specific installation sequence is to first install the adjusting bolt 305 , and after the adjusting bolt 305 abuts against the driven shaft, install the fastening bolt 306 to fix the sample installation assembly 3 on the driven shaft.

[0073] The experimental kettle 1 also includes a position regulator 12, which includes an adjustment end and a mounting end. The mounting end of the position regulator 12 extends through the side wall of the experimental kettle 1 into the experimental chamber. The position regulator 12 rotates relative to the experimental kettle 1. The mounting end of the position regulator 12 is provided with a displacement sensor 11 for obtaining the position of the sample 301.

[0074] In this embodiment, the position regulator 12 is a rod-shaped structure at least partially threaded, and the position regulator 12 is threadedly connected to the experimental kettle 1. The position of the displacement sensor 11 is adjusted by rotating the position regulator 12 so that the displacement sensor 11 can accurately measure the position of the sample 301.

[0075] Among them, a fourth water cooling jacket 13 is mounted on the position regulator 12, and one end of the fourth water cooling jacket 13 is welded to the outer peripheral side of the experimental kettle 1 to ensure that when the position regulator 12 rotates relative to the experimental kettle 1, the circulating water of the experimental kettle 1 does not leak. At the same time, the fourth water cooling jacket 13 can also cool the position regulator 12.

[0076] The experimental device further comprises an exciting shaft 5 , which passes through the experimental kettle 1 and is connected to the sample mounting assembly 3 .

[0077] Among them, the exciting shaft 5 is connected to the exciter, and the exciter vibrates to generate an exciting force, which is transmitted to the sample mounting assembly 3 through the exciting shaft 5 to apply the exciting force to it; since the exciting shaft 5 also only has the freedom of movement relative to the experimental kettle 1, the reciprocating horizontal motion of the sample mounting assembly 3 is achieved under the action of the exciting force.

[0078] Among them, a first water-cooling jacket 6 is mounted on the outer peripheral side of the excitation shaft 5, and one end of the first water-cooling jacket 6 is welded to the outer peripheral side of the experimental kettle 1 to ensure that when the excitation shaft 5 moves horizontally relative to the experimental kettle 1, the circulating water of the experimental kettle 1 does not leak. At the same time, the first water-cooling jacket 6 can also cool the excitation shaft 5.

[0079] A loading assembly is designed in the experimental kettle 1, and a loading weight 408 is placed on the stud 407 of the loading assembly 4, so that the weight of the loading weight 408 and the weight of the loading part of the loading assembly 4 act on the sample 301 installed on the sample mounting assembly 3, and a normal load is applied to the sample 301. At the same time, the position of the sample is monitored by a displacement sensor installed in the experimental chamber, thereby realizing a micro-motion abrasion experiment under a small-range normal load condition, and solving the problem in the prior art that micro-motion abrasion experiment under a small-range load condition cannot be carried out due to the friction between the connecting rod and the supporting structure of the force sensor, and the friction is difficult to accurately identify and eliminate.

[0080] It is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0081] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A micro-abrasion experimental device, characterized in that: include: An experimental kettle (1), wherein the experimental kettle (1) comprises an experimental chamber; A sample installation component (3), the sample installation component (3) is arranged in the experimental chamber and is used to clamp the sample (301); A loading component (4), the loading component (4) being arranged in the experimental chamber, and the loading component (4) being located above the sample mounting component (3); The loading assembly (4) comprises a supporting portion and a loading portion, wherein the supporting portion is detachably connected to the side wall of the experimental kettle (1), the loading portion is mounted on the supporting portion, a plate sample (404) is arranged at one end of the loading portion facing the sample (301), and the loading portion moves along a preset path to apply a load to the sample (301) on the sample mounting assembly (3).

2. A fretting abrasion experimental device according to claim 1, characterized in that: The support portion comprises a support beam (401), the support beam (401) being detachably connected to the side wall of the experimental kettle (1), the middle portion of the surface of the support beam (401) protruding outwards to form a convex block, the convex block being provided with a mounting hole with two ends passing therethrough, and the loading portion being arranged in the mounting hole.

3. A fretting abrasion experimental device according to claim 2, characterized in that: The loading part comprises a sliding sleeve, the sliding sleeve is arranged in the mounting hole, the sliding sleeve is fixed relative to the mounting hole, a shaft rod (402) is arranged in the sliding sleeve, the shaft rod (402) slides relative to the sliding sleeve, both ends of the shaft rod (402) extend to the outside of the mounting hole, one end of which is provided with an upper loading plate (406), and a loading weight (408) is arranged on the upper loading plate (406), and the other end of the shaft rod (402) is provided with a lower loading plate (405).

4. A fretting abrasion experimental device according to claim 3, characterized in that: The loading part further comprises a stud (407), wherein the stud (407) comprises a connecting end and a limiting end, a first screw hole is provided on the upper loading plate (406), a second screw hole is provided on the end surface of the shaft (402) on which the upper loading plate (406) is mounted, and the first screw hole corresponds to the second screw hole one by one, the connecting end of the stud (407) passes through the first screw hole of the upper loading plate (406) and the second screw hole of the shaft (402) in sequence, and the The upper loading plate (406) is fixed on the shaft (402), the limit end of the stud (407) is located outside the upper loading plate (406), a through hole is provided on the loading weight (408), and the limit end of the stud (407) passes through the through hole of the loading weight (408), so that the loading weight (408) is set on the upper loading plate (406), and a plate sample (404) is set on the lower loading plate (406).

5. The fretting abrasion test device according to claim 3, characterized in that: The inner wall of the experimental kettle (1) is provided with supporting ears, and the two ends of the support beam (401) are respectively connected to the corresponding supporting ears, so as to install the loading assembly (4) in the experimental chamber.

6. The fretting abrasion test device according to claim 1, characterized in that: The sample mounting assembly (3) comprises a mounting platform (304), a sample mounting base (303) is arranged at the top of the mounting platform (304), the sample mounting base (303) is used to clamp the sample (301), and the side wall of the mounting platform (304) protrudes outwards to form a supporting leg.

7. A fretting abrasion experimental device according to claim 6, characterized in that: The experimental kettle (1) also includes a driven shaft, one end of which passes through the side wall of the experimental kettle (1) and extends into the experimental chamber, and a third threaded hole is provided at the end thereof, and a fourth threaded hole is provided on the support leg, and a fastening bolt (307) is screwed to the fourth threaded hole and the third threaded hole in sequence, so that the support leg of the sample mounting assembly (3) is mounted on the driven shaft.

8. The fretting abrasion test device according to claim 7, characterized in that: A fifth threaded hole is provided on the sample mounting assembly (3), an adjusting bolt (305) is arranged in the fifth threaded hole, and the bottom end of the adjusting bolt (305) abuts against the driven shaft.

9. The fretting abrasion test device according to claim 1, characterized in that: The experimental kettle (1) further comprises a position regulator (12), the position regulator (12) comprising an adjustment end and a mounting end, the mounting end of the position regulator (12) extending through a side wall of the experimental kettle (1) into the experimental chamber, the position regulator (12) rotates relative to the experimental kettle (1), and the mounting end of the position regulator (12) is provided with a displacement sensor (11) for obtaining the position of the sample (301).

10. The fretting abrasion test device according to claim 1, characterized in that: The experimental device also includes an excitation shaft (5), and the excitation shaft (5) passes through the experimental kettle (1) and is connected to the sample mounting assembly (3).

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