High-temperature and high-humidity frictional wear experimental device

Abstract

The utility model discloses a high-temperature and high-humidity friction wear experimental device, and belongs to the related technical field of material performance testing devices. A clamping system and an opposite grinding system; the opposite-grinding system comprises a pressurizing driving shaft, the other end of the pressurizing driving shaft is provided with an opposite-grinding frame, the opposite-grinding frame is provided with at least two opposite-grinding piece clamping assemblies, and all the opposite-grinding piece clamping assemblies are arranged at intervals in the outward radiation direction of the rotating center of the testing table and used for carrying out abrasion resistance testing on different parts of the abrasion-resistant material. All the opposite-grinding piece clamping assemblies can carry out wear-resistant tests on different positions of the wear-resistant material after fixing the opposite-grinding piece, so that the wear-resistant tests on multiple positions of the wear-resistant material can be completed in one test operation, or the wear-resistant tests on multiple wear-resistant materials can be completed by changing the shape of the wear-resistant material; the friction and wear testing device solves the problem that a friction and wear testing device in the prior art only can test a wear-resistant material by using one wear-resistant piece, so that the testing efficiency is relatively low.

Description

Technical Field

[0001] The utility model belongs to the technical field related to material property testing devices, and more specifically, particularly relates to a high-temperature and high-humidity friction and wear experiment device. Background Technique

[0002] Before the wear-resistant material is used, it is necessary to test its friction and wear properties. In this performance test, a friction and wear test device is usually used.

[0003] In the prior art, the structure of a typical friction and wear test device is as follows: it includes a test bench and a holder. The wear-resistant material (sample) to be tested is fixed on the test bench, the counter-part is fixed on the holder, a certain force is applied to the holder to press the counter-part against the wear-resistant material, and then the test bench rotates to complete the test of the wear-resistant material.

[0004] Although the above-mentioned friction and wear test device can complete the test of the wear-resistant material, it still has certain technical defects. For example: the holder can only fix one counter-part. If multiple groups of comparison tests (with different test pressures for each group) need to be carried out on the wear-resistant material, then the tests can only be completed one by one, and the test time is long and the test efficiency is low. Content of the Utility Model

[0005] (I) Technical Problem

[0006] To sum up, how to solve the problem of low test efficiency existing in the prior art that the friction and wear test device can only use one counter-part to test the wear-resistant material has become an urgent problem for those skilled in the art.

[0007] (II) Technical Solution

[0008] The utility model provides a high-temperature and high-humidity friction and wear experiment device. In the utility model, the high-temperature and high-humidity friction and wear experiment device includes:

[0009] A device chamber;

[0010] A clamping system, the clamping system includes a rotary drive shaft, one end of the rotary drive shaft is connected with a rotary drive device, the other end of the rotary drive shaft passes through the bottom of the device chamber and is located inside the device chamber, a test bench is arranged at the other end of the rotary drive shaft, the test bench is rotatably arranged inside the device chamber, and the test bench is used to fix the wear-resistant material to be tested;

[0011] A grinding system, the grinding system includes a pressurizing drive shaft, one end of the pressurizing drive shaft is connected with a pressurizing drive device, the other end of the pressurizing drive shaft passes through the top of the device chamber and is located inside the device chamber, a grinding frame is arranged at the other end of the pressurizing drive shaft, the grinding frame is arranged opposite to the test bench and can move up and down relative to the test bench, at least two grinding part clamping assemblies are arranged on the grinding frame, and in the direction radiating outward from the rotation center of the test bench, all the grinding part clamping assemblies are arranged at intervals and are used for carrying out wear resistance tests on different parts of the wear-resistant material.

[0012] Preferably, in the high-temperature and high-humidity friction and wear experiment device provided by the present utility model, at least one pressure-adjustable grinding part clamping assembly is included in all the grinding part clamping assemblies, and is used for changing the pressure on the wear-resistant material.

[0013] Preferably, in the high-temperature and high-humidity friction and wear experiment device provided by the present utility model, the pressure-adjustable grinding part clamping assembly includes an adjustable rod threadedly connected with the grinding frame, an adjustment knob is arranged at the upper end of the adjustable rod, and the bottom end of the adjustable rod is used for fixing the grinding part.

[0014] Preferably, in the high-temperature and high-humidity friction and wear experiment device provided by the present utility model, a stop block is arranged at the part of the adjustable rod located below the grinding frame, and a compression spring is arranged between the stop block and the grinding frame.

[0015] Preferably, in the high-temperature and high-humidity friction and wear experiment device provided by the present utility model, a spray system is further included; the spray system includes a water tank, a heater is arranged in the water tank, the water in the water tank is heated by the heater to generate water mist, a delivery pipe is arranged between the water tank and the device chamber, a spray pipe is arranged inside the device chamber, the spray pipe is connected with the delivery pipe, and the spray pipe is used for spraying water mist into the interior of the device chamber.

[0016] Preferably, in the high-temperature and high-humidity friction and wear experiment device provided by the present utility model, the spray pipe is a spiral pipe structure spirally arranged around the inner side wall of the device chamber, the bottommost circle of the spray pipe is arranged higher than the test bench, and spray holes are arranged at equal intervals on the bottommost circle of the spray pipe.

[0017] Preferably, in the high-temperature and high-humidity friction and wear experiment device provided by the present utility model, the test bench includes a disc-shaped bench bottom, a bench edge is arranged at the outer edge of the bench bottom, and a claw assembly is arranged in the middle of the bench bottom.

[0018] Preferably, in the high-temperature and high-humidity friction and wear test device provided by the present utility model, water leakage holes are provided at positions on the table bottom close to the table edge and / or at positions on the table edge close to the table bottom; a drain pipe is provided at the bottom of the device chamber.

[0019] Preferably, in the high-temperature and high-humidity friction and wear test device provided by the present utility model, at least three clamping jaw assemblies are provided, and all the clamping jaw assemblies are arranged at equal intervals around the center of the table bottom.

[0020] Preferably, in the high-temperature and high-humidity friction and wear test device provided by the present utility model, the counter-grinding frame is a long strip-shaped sheet structure, the counter-grinding frame is arranged parallel to the table bottom, and the counter-grinding frame is arranged through the rotation center axis of the table bottom, and all the counter-grinding part clamping assemblies are arranged at equal intervals on the counter-grinding frame.

[0021] (III) Beneficial effects

[0022] As can be seen from the above, the present utility model provides a high-temperature and high-humidity friction and wear test device. In the present utility model, the high-temperature and high-humidity friction and wear test device includes: a device chamber; a clamping system, the clamping system includes a rotation drive shaft, one end of the rotation drive shaft is connected to a rotation drive device, the other end of the rotation drive shaft passes through the bottom of the device chamber and is located inside the device chamber, a test table is provided at the other end of the rotation drive shaft, the test table is rotatably arranged inside the device chamber, and the test table is used to fix the wear-resistant material to be tested; a counter-grinding system, the counter-grinding system includes a pressure drive shaft, one end of the pressure drive shaft is connected to a pressure drive device, the other end of the pressure drive shaft passes through the top of the device chamber and is located inside the device chamber, a counter-grinding frame is provided at the other end of the pressure drive shaft, the counter-grinding frame is arranged opposite to the test table and can move up and down relative to the test table, at least two counter-grinding part clamping assemblies are provided on the counter-grinding frame, and in the direction radiating outward from the rotation center of the test table, all the counter-grinding part clamping assemblies are arranged at intervals and are used to perform wear resistance tests on different parts of the wear-resistant material.

[0023] Through the above structural design, the present utility model has provided a plurality of counter-grinding part clamping assemblies on the counter-grinding frame. After all the counter-grinding part clamping assemblies fix the counter-grinding parts, they can perform wear resistance tests on different positions of the wear-resistant material, so as to complete the wear resistance tests of multiple positions of the wear-resistant material in one test operation, or change the shape of the wear-resistant material (for example, multiple annular wear-resistant materials are stacked together for testing) to complete the wear resistance tests of multiple wear-resistant materials. The present utility model solves the problem of low test efficiency existing in the prior art that the friction and wear test device can only use one counter-grinding part to test the wear-resistant material. Description of the drawings

[0024] The accompanying drawings of the specification, which form a part of this application, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model.

[0025] Among them:

[0026] Figure 1 It is a schematic structural diagram of a high-temperature and high-humidity friction and wear test device in an embodiment of the present utility model;

[0027] Figure 2 It is a diagram when testing different positions of the same wear-resistant material in an embodiment of the present utility model;

[0028] Figure 3 It is a diagram when testing different wear-resistant materials in an embodiment of the present utility model.

[0029] In Figures 1 to 3 the corresponding relationship between the component names and the reference numerals is as follows:

[0030] Device compartment 1, Rotating drive shaft 2, Pressing drive shaft 3, Pressing drive device 4, Counter grinding frame 5, Pressure-adjustable counter grinding part clamping assembly 6, Adjustable rod 61, Adjusting knob 62, Compression spring 63, Water tank 7, Delivery pipe 8, Spray pipe 9, Claw assembly 10, Drain pipe 11, Test bench 12.

[0031] In Figure 2 a shows the wear-resistant material, and b, b', and b'' are the test marks at different positions on the same wear-resistant material;

[0032] In Figure 3 a, a', and a'' show different wear-resistant materials. Detailed implementation manners

[0033] The present utility model will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present utility model rather than limitation of the present utility model. In fact, those skilled in the art will appreciate that modifications and variations can be made to the present utility model without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Accordingly, it is intended that the present utility model cover such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0034] In the description of the present utility model, the orientation or positional relationship indicated by terms such as "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and does not require the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "coupled" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] Please refer to Figures 1 to 3 , wherein, Figure 1 is a schematic structural diagram of a high-temperature and high-humidity friction and wear test device in an embodiment of the present utility model; Figure 2 is a diagram when testing different positions of the same wear-resistant material in an embodiment of the present utility model; Figure 3 is a diagram when testing different wear-resistant materials in an embodiment of the present utility model.

[0036] The present utility model provides a high-temperature and high-humidity friction and wear test device. The high-temperature and high-humidity friction and wear test device includes a device chamber 1, and the device chamber 1 is composed of an inner shell and an outer shell. A heating device is provided between the inner shell and the outer shell. The inner shell is made of a high-temperature resistant material (the temperature resistance range is between 50°C and 350°C, and stainless steel material can be selected), and has a rectangular shell structure. The outer shell is made of a high-temperature resistant material and has an overall rectangular shell structure. The outer shell is arranged outside the inner shell. An insulating layer is further provided outside the outer shell, and an outer panel is provided outside the insulating layer to improve the aesthetics of the device.

[0037] The high-temperature and high-humidity friction and wear test device provided by the present utility model further includes a clamping system, and the clamping system is used to fix the wear-resistant material (the sample to be tested).

[0038] Specifically, the clamping system includes a rotary drive shaft 2. The rotary drive shaft 2 is a metal circular shaft (preferably a stainless steel circular shaft with a uniform diameter). One end of the rotary drive shaft 2 is connected to a rotary drive device, which is preferably a stepper motor. Further, the present utility model is also provided with a speed reducer. The rotary drive device is power-connected to the speed reducer, and the speed reducer is power-connected to the rotary drive shaft 2. By controlling the stepper motor, the rotational speed of the rotary drive shaft 2 can be controlled. The rotary drive shaft 2 is vertically arranged. The bottom end of the rotary drive shaft 2 is power-connected to the rotary drive device, and the other end (top end) of the rotary drive shaft 2 passes through the bottom of the device chamber 1 and is located inside the device chamber 1. A test bench 12 is fixedly arranged at the other end (top end) of the rotary drive shaft 2. The test bench 12 is a metal test bench, and the test bench 12 is driven by the rotary drive shaft 2 to rotate. The test bench 12 is rotatably arranged inside the device chamber 1 and is used to fix the wear-resistant material to be tested. In the present utility model, an opening structure is arranged at the center position of the bottom of the device chamber 1, and a bearing is installed on the opening structure. The rotary drive shaft 2 is installed on the device chamber 1 through this bearing.

[0039] During the test, the test bench 12 is in a rotating state. To improve the operating stability of the present utility model, the specific structure of the test bench 12 is as follows: it includes a disk-shaped table bottom, a table edge is arranged at the outer edge of the table bottom, and a claw assembly 10 is arranged in the middle of the table bottom. In a specific embodiment of the present utility model, the claw assembly 10 includes a spring piece. One end of the spring piece is arranged on the table bottom through a bolt, and the other end of the spring piece can be elastically lifted and is used to press the wear-resistant material. Of course, other structural forms that can fix the wear-resistant material can also be applied to the present utility model. Further, at least three (three is the optimal number of settings) claw assemblies 10 are provided, and all the claw assemblies 10 are arranged at equal intervals around the center of the table bottom.

[0040] The high-temperature and high-humidity friction and wear test device provided by the present utility model further includes a counter-grinding system, which is used to fix the counter-grinding piece. The counter-grinding piece is in contact with the wear-resistant material, and the wear-resistant material is subjected to friction testing during the rotation of the wear-resistant material.

[0041] Specifically, the grinding system includes a pressurizing drive shaft 3, which is a metal round shaft (preferably a stainless steel round shaft with equal diameter). One end (the top end) of the pressurizing drive shaft 3 is connected to a pressurizing drive device 4, which is a small hydraulic cylinder and is used to provide a pressure with a relatively small stroke but high precision. The pressurizing drive device 4 is arranged above the device cabin 1. The pressurizing drive shaft 3 is vertically arranged. The other end (the bottom end) of the pressurizing drive shaft 3 passes through the top of the device cabin 1 and is located inside the device cabin 1. An opening structure is provided at the middle position of the top of the device cabin 1, and a bearing is arranged on the opening structure. This bearing is a linear bearing. After the pressurizing drive shaft 3 passes through the bearing, its top end is connected to the pressurizing drive device 4, and its bottom end is located inside the device cabin 1 and can pressurize the wear-resistant material to complete the wear resistance test.

[0042] The other end (the bottom end, that is, the end located inside the device cabin 1) of the pressurizing drive shaft 3 is provided with a grinding frame 5. The grinding frame 5 is a metal frame and is fixedly arranged on the pressurizing drive shaft 3. The grinding frame 5 is arranged opposite to the test bench 12 and can move up and down relative to the test bench 12 (the purpose of moving up and down is to adjust the pressure on the wear-resistant material). At least two grinding piece clamping assemblies are arranged on the grinding frame 5. The function of the grinding piece clamping assemblies is to fix the grinding pieces. In the direction radiating outward from the rotation center of the test bench 12, all the grinding piece clamping assemblies are arranged at intervals and are used to conduct wear resistance tests on different parts of the wear-resistant material.

[0043] It should be noted that the device cabin 1 in the present utility model is a double-layer shell structure. Therefore, after opening holes (upper and lower holes) in the device cabin 1 of the present utility model, an installation sleeve needs to be fixedly arranged at the hole opening position. The installation sleeve is fixedly connected and sealed with the inner shell and the outer shell. Bearings are arranged at both ends of the installation sleeve, and then the shaft is installed.

[0044] The present utility model is provided with a plurality of abrasive part clamping assemblies on the grinding frame 5, and the arrangement of the abrasive part clamping assemblies is designed to be able to perform wear resistance tests on different positions of wear-resistant materials. In an improved embodiment of the present utility model, among all the abrasive part clamping assemblies (it is optimal to set three abrasive part clamping assemblies), at least one pressure-adjustable abrasive part clamping assembly 6 (it is optimal to set two pressure-adjustable abrasive part clamping assemblies 6, and the pressure of the third one is not adjustable relative to the grinding frame 5) is included for changing the pressure on the wear-resistant material. In this embodiment, the pressure-adjustable abrasive part clamping assembly 6 means that when the position of the grinding frame 5 is fixed, the position of the abrasive part can be finely adjusted, so as to change the pressure of the abrasive part on the wear-resistant material. Specifically, the pressure-adjustable abrasive part clamping assembly 6 includes an adjustable rod 61 threadedly connected to the grinding frame 5, an adjustment knob 62 is arranged at the upper end of the adjustable rod 61, and the bottom end of the adjustable rod is used for fixing the abrasive part. The present utility model can reduce the pitch between the threads on the adjustable rod 61, so as to achieve the accuracy of the axial movement of the adjustable rod. Further, a stop block is arranged at the part of the adjustable rod below the grinding frame 5, and a compression spring 63 is arranged between the stop block and the grinding frame 5. By arranging the compression spring 63, a pre-tightening force is applied to the adjustable rod to prevent the adjustable rod from loosening.

[0045] For the grinding frame 5, its specific structure is as follows: the grinding frame 5 is a long strip-shaped sheet structure, the grinding frame 5 is arranged parallel to the table bottom, and the grinding frame 5 is arranged through the rotation center axis of the table bottom. All the abrasive part clamping assemblies are arranged at equal intervals on the grinding frame 5. This structural design can enable both sides of the rotation center of the wear-resistant material to be subjected to pressure, so that the forces on the grinding frame 5 and the wear-resistant material are relatively balanced.

[0046] The high-temperature and high-humidity friction and wear test device provided by the present utility model further includes a spray system. The spray system is used to provide water mist into the device chamber 1, so as to create a humid environment. Specifically, the spray system includes a water tank 7. A heater is arranged in the water tank 7 to heat the water in the water tank 7 and generate water mist. A delivery pipe 8 is arranged between the water tank 7 and the device chamber 1, and a spray pipe 9 is arranged in the device chamber 1. The spray pipe 9 is connected to the delivery pipe 8 and is used to spray water mist into the interior of the device chamber 1. In a preferred embodiment of the present utility model, the water tank 7 is a pressure-resistant water tank, which can provide high-pressure steam (0.3 MPa - 1.5 MPa). Further, the spray pipe 9 is a spiral pipe structure spirally arranged around the inner side wall of the device chamber 1. The bottommost loop of the spray pipe 9 is higher than the test bench 12. Spray holes are equally spaced on the bottommost loop of the spray pipe 9. The spray pipe 9 is arranged inside the device chamber 1 for conveying. After preheating and temperature rising, the water mist is sprayed out through the spray holes around the wear-resistant material by the last loop of the spray pipe 9, and the temperature of the sprayed water mist is basically the same as the surrounding environment temperature. In order to avoid water accumulation, the present utility model is provided with water leakage holes at the position of the test bench bottom near the edge of the bench and / or at the position of the bench edge near the bottom of the bench; a drain pipe 11 is arranged at the bottom of the device chamber 1.

[0047] The high-temperature and high-humidity friction and wear test device provided by the present utility model further includes a control system. The control system includes a variety of sensors, such as: 1. A temperature sensor, which is used to obtain the temperature parameter inside the device chamber 1; 2. A rotational speed sensor, which is used to obtain the rotational speed parameter of the rotary drive shaft 2; 3. A pressure sensor, which is used to obtain the pressure parameter of the pressurizing drive shaft 3. The control system further includes a controller. The sensors are signal-connected to the controller and can send the respective parameters they obtain to the controller. The controller is control-connected to the heating device, the rotary drive device, and the pressurizing drive device 4.

[0048] As described above, the present utility model provides a high-temperature and high-humidity friction and wear test device. In the present utility model, the high-temperature and high-humidity friction and wear test device includes: a device chamber 1; a clamping system, the clamping system includes a rotary drive shaft 2, one end of the rotary drive shaft 2 is connected to a rotary drive device, the other end of the rotary drive shaft 2 passes through the bottom of the device chamber 1 and is located inside the device chamber 1, a test bench 12 is provided at the other end of the rotary drive shaft 2, the test bench 12 is rotatably arranged inside the device chamber 1, and the test bench 12 is used to fix the wear-resistant material to be tested; a counter-grinding system, the counter-grinding system includes a pressurizing drive shaft 3, one end of the pressurizing drive shaft 3 is connected to a pressurizing drive device 4, the other end of the pressurizing drive shaft 3 passes through the top of the device chamber 1 and is located inside the device chamber 1, a counter-grinding frame 5 is provided at the other end of the pressurizing drive shaft 3, the counter-grinding frame 5 is arranged opposite to the test bench 12 and can move up and down relative to the test bench 12, at least two counter-grinding part clamping assemblies are provided on the counter-grinding frame 5, and in the direction radiating outward from the rotation center of the test bench 12, all the counter-grinding part clamping assemblies are spaced apart and used to perform wear resistance tests on different parts of the wear-resistant material.

[0049] Through the above structural design, the present utility model arranges a plurality of counter-grinding part clamping assemblies on the counter-grinding frame 5. After fixing the counter-grinding parts, all the counter-grinding part clamping assemblies can perform wear resistance tests on different positions of the wear-resistant material, so as to complete the wear resistance tests of multiple positions of the wear-resistant material in one test operation, or change the shape of the wear-resistant material (for example, multiple annular wear-resistant materials are stacked together for testing) to complete the wear resistance tests of multiple wear-resistant materials. The present utility model solves the problem of low test efficiency existing in the prior art that the friction and wear test device can only use one counter-grinding part to test the wear-resistant material.

[0050] As is known by technical common sense, the present utility model can be implemented by other embodiments without departing from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present utility model or within the scope equivalent to the present utility model are encompassed by the present utility model.

Claims

1. A high-temperature and high-humidity friction and wear experimental device, characterized in that, Comprising: Device compartment (1); A clamping system, the clamping system includes a rotary drive shaft (2), one end of the rotary drive shaft is connected with a rotary drive device, the other end of the rotary drive shaft passes through the bottom of the device compartment and is located inside the device compartment, a test bench (12) is arranged at the other end of the rotary drive shaft, the test bench is rotatably arranged inside the device compartment, and the test bench is used for fixing the wear-resistant material (a) to be tested; A counter-grinding system, the counter-grinding system includes a pressure application drive shaft (3), one end of the pressure application drive shaft is connected with a pressure application drive device (4), the other end of the pressure application drive shaft passes through the top of the device compartment and is located inside the device compartment, a counter-grinding frame (5) is arranged at the other end of the pressure application drive shaft, the counter-grinding frame is arranged opposite to the test bench and can move up and down relative to the test bench, at least two counter-grinding part clamping assemblies are arranged on the counter-grinding frame, and in the direction radiating outward from the rotation center of the test bench, all the counter-grinding part clamping assemblies are arranged at intervals and are used for performing wear resistance tests on different parts of the wear-resistant material.

2. The high-temperature and high-humidity friction and wear experiment device according to claim 1, wherein at least one of all the counter-grinding part clamping assemblies includes a pressure-adjustable counter-grinding part clamping assembly (6) for changing the pressure on the wear-resistant material.

3. The high-temperature and high-humidity friction and wear experiment device according to claim 2, wherein the pressure-adjustable counter-grinding part clamping assembly includes an adjustable rod (61) threadedly connected to the counter-grinding frame, an adjustment knob (62) is arranged at the upper end of the adjustable rod, and the bottom end of the adjustable rod is used for fixing the counter-grinding part.

4. The high-temperature and high-humidity friction and wear experiment device according to claim 3, wherein a stop block is arranged at the part of the adjustable rod located below the counter-grinding frame, and a compression spring (63) is arranged between the stop block and the counter-grinding frame.

5. The high-temperature and high-humidity friction and wear experiment device according to claim 2, wherein it further includes a spraying system; the spraying system includes a water tank (7), a heater is arranged inside the water tank, the water in the water tank is heated by the heater to generate water mist, a delivery pipe (8) is arranged between the water tank and the device compartment, a spraying pipe (9) is arranged inside the device compartment, the spraying pipe is connected with the delivery pipe, and the spraying pipe is used for spraying water mist into the interior of the device compartment.

6. The high-temperature and high-humidity friction and wear experiment device according to claim 5, wherein the spraying pipe is of a spiral pipe structure spirally arranged around the inner side wall of the device compartment, the bottommost circle of the spraying pipe is arranged higher than the test bench, and spraying holes are arranged at equal intervals on the bottommost circle of the spraying pipe.

7. The high-temperature and high-humidity friction and wear experiment device according to claim 6, wherein the test bench includes a disc-shaped bench bottom, a bench edge is arranged at the outer edge of the bench bottom, and a claw assembly (10) is arranged in the middle of the bench bottom.

8. The high-temperature and high-humidity friction and wear test device according to claim 7, characterized in that a water leakage hole is provided at a position of the bottom of the table near the edge of the table and / or at a position of the edge of the table near the bottom of the table; a drain pipe (11) is provided at the bottom of the device chamber.

9. The high-temperature and high-humidity friction and wear test device according to claim 7, characterized in that at least three clamping jaw assemblies are provided, and all the clamping jaw assemblies are arranged at equal intervals around the center of the bottom of the table.

10. The high-temperature and high-humidity friction and wear test device according to claim 7, characterized in that the counter grinding frame is a long strip-shaped sheet structure, the counter grinding frame is arranged parallel to the bottom of the table, and the counter grinding frame is arranged through the rotation center axis of the bottom of the table, and all the counter grinding part clamping assemblies are arranged at equal intervals on the counter grinding frame.

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