A device for testing the surface stripping strength of a friction material

Abstract

The application discloses a kind of friction material surface peeling strength test device, it is related to material strength detection technical field, including drive assembly, the drive spindle of drive assembly extends to detection assembly, detection assembly includes sample fixture, sample fixture is equipped with accommodating cavity, accommodating cavity is used to connect measured sample, sample fixture and measured sample are all set in the outside of drive spindle, and drive spindle is used to rotate relative to both, the end of drive spindle is connected with ballast component, ballast component is fixedly connected between accommodating cavity and dynamic friction pair, the end face of dynamic friction pair close to measured sample is detachably connected with several fiber brushes, ballast component makes dynamic friction pair exert pressure on measured sample, the present application solves the technical problem that existing material strength test device production maintenance cost is higher, it is difficult to accurately detect material wear resistance under the condition that material is interfered by silt and other foreign matters, cannot judge the surface peeling strength of friction pair.

Description

Technical Field

[0001] This invention relates to the field of material strength testing technology, and in particular to a device for testing the surface peel strength of friction materials. Background Technology

[0002] The performance of friction materials is mainly reflected in the interface of the friction pair. Interfacial friction is a process in which material surfaces come into direct contact and generate heat. This process damages the surface structure and is prevalent in various materials and structures. The tribological characteristics of the material interface directly affect the reliability of the material and the lifespan of the equipment. With the development of the industry, the requirements for friction testing are also increasing. Existing testing equipment can simultaneously test static friction, dynamic friction, wear amount, and wear track width, but the samples used are all small, mainly focusing on rating the overall wear resistance of the material. These methods are difficult to simulate the scratching behavior of small foreign objects on the surface of the friction pair, and cannot accurately reflect the friction pair's resistance to foreign object scratching under actual complex working conditions. Existing methods for reproducing actual working conditions usually use large bench testing equipment. The equipment used in bench testing is expensive, and the purchase and maintenance of this equipment requires a lot of money. At the same time, the long bench testing cycle not only increases time costs but also affects product development and production progress. Moreover, in the bench testing environment, it is difficult to realistically introduce interference factors such as mud and foreign objects from actual use scenarios, leading to deviations between test results and actual conditions.

[0003] In summary, developing a cost-effective, easy-to-operate testing device that can evaluate the scratch resistance of friction pairs is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a device for testing the surface peel strength of friction materials, which solves the technical problems of high production and maintenance costs of existing material strength testing devices and difficulty in accurately testing the wear resistance of materials when they are affected by foreign objects such as mud and sand.

[0005] To achieve the above objectives, the present invention provides a device for testing the surface peel strength of friction materials, comprising:

[0006] The drive assembly has a drive spindle that extends into the detection assembly. The detection assembly includes a sample clamp with a receiving cavity for holding the sample to be tested. Both the sample clamp and the sample to be tested are fitted onto the outside of the drive spindle, and the drive spindle is used to rotate relative to both. A ballast assembly is connected to the end of the drive spindle. A dynamic friction pair is provided between the ballast assembly and the receiving cavity. The dynamic friction pair is fixedly connected to the ballast assembly. Several fiber brushes are detachably connected to the end face of the dynamic friction pair near the sample to be tested. The ballast assembly applies pressure to the sample to be tested through the dynamic friction pair. The drive spindle drives the dynamic friction pair to rotate, causing the fiber brushes to simulate wear on the sample to be tested.

[0007] Preferably, the sample clamp includes a sample clamp plate. The end face of the sample clamp plate near the ballast assembly is provided with a mating groove. Several first elastic elements are provided along the axial direction at the edge of the mating groove near its inner wall. Each first elastic element is evenly distributed around the axis of the drive shaft. A first retaining ring and a second retaining ring are sequentially provided at the port of the mating groove towards the end near the ballast assembly. The first retaining ring is provided with a first annular groove near the edge of the port of the sample clamp plate. The first annular groove is used to engage with each of the first elastic elements. A positioning ring platform extends outward from the end of the sample to be tested away from the sample clamp plate. A second annular groove is provided on the end face of the second retaining ring away from the first retaining ring, which can engage with the positioning ring platform. The first elastic elements hold the first retaining ring and the second retaining ring, so that the sample to be tested is fully in contact with the dynamic friction pair.

[0008] Preferably, a number of guide rods are provided along the axial direction of the edge of the sample clamp near its outer wall, and the guide rods pass through the first retaining ring and the second retaining ring. Ball bearings are provided between the guide rods and the first retaining ring and the second retaining ring respectively.

[0009] Preferably, the ballast assembly includes a clamping screw, which is coaxially arranged with the drive spindle. A positioning plate is coaxially provided at the end of the clamping screw near the drive spindle. The positioning plate is used to connect with the dynamic friction pair. A clamping plate is threadedly connected at the end of the clamping screw away from the drive spindle. A second elastic element is sleeved between the clamping plate and the positioning plate. When the clamping plate is screwed toward the end near the drive spindle, the second elastic element is compressed, causing the positioning plate to apply pressure to the sample to be tested.

[0010] Preferably, the end face of the dynamic friction pair away from the sample to be tested is provided with a locking groove, and the positioning disk is provided with a locking plate that cooperates with the locking groove. The locking groove and the locking plate are used to restrict the radial and axial degrees of freedom between the dynamic friction pair and the positioning disk.

[0011] Preferably, a first limiting rod and a second limiting rod extend from the end faces of the positioning plate and the clamping plate, respectively. The end of the first limiting rod is provided with a limiting groove. The ends of the first limiting rod and the second limiting rod that are opposite to each other are provided with a first shoulder and a second shoulder, respectively. The diameter of the second shoulder is equal to that of the first limiting rod, the diameter of the first shoulder is equal to that of the clamping plate, the inner diameter of the second elastic element is equal to that of the second shoulder, and the two ends of the second elastic element abut against the end faces of the first shoulder and the clamping plate, respectively. After the clamping plate is screwed on, the first limiting rod extends into the limiting groove.

[0012] Preferably, the dynamic friction pair is provided with a plurality of fixing holes evenly distributed thereon, the fixing holes being used to install the fiber brush.

[0013] Preferably, the drive assembly further includes a drive motor, the output end of which is connected to a torque sensor via a coupling, and the output end passes through the torque sensor and is connected to the drive spindle.

[0014] Preferably, the detection assembly further includes a sealed box containing a circulating water supply assembly for supplying experimental water between the dynamic friction pair and the sample to be tested.

[0015] Preferably, a control assembly is provided between the torque sensor and the detection component. The control assembly is used to detect the pressure and temperature between the sample to be tested and the dynamic friction pair, and to control the operation of the circulating water supply component.

[0016] Compared to the aforementioned background technology, the friction material surface peel strength testing device provided by the present invention includes a drive assembly. The drive spindle of the drive assembly extends into the testing assembly and passes through the sample holder of the testing assembly. One end of the sample holder is provided with a receiving cavity for cooperating with the sample to be tested. The drive spindle passes through both the sample to be tested and the sample holder, and the drive spindle can rotate axially within both. A ballast assembly is fixedly connected to the end of the drive spindle, and the ballast assembly can rotate together with the drive spindle. A dynamic friction pair is fixedly connected to the side of the ballast assembly near the sample holder, and the dynamic friction pair faces... Several fiber brushes are provided on one end face of the receiving cavity, and each fiber brush is detachably connected to the dynamic friction pair. When the operator applies a certain pressure to the dynamic friction pair through the ballast component, the fiber brush on the dynamic friction pair comes into contact with the sample to be tested at a specified pressure. The receiving cavity locks the position of the sample to be tested. After the operator starts the drive component, the drive spindle drives the dynamic friction pair to rotate, and the fiber brush rotates and scrapes on the side wall of the sample to be tested. This simulates the scenario where the sample to be tested is affected by foreign objects such as mud and sand and wear debris in the use environment, which can more accurately test the surface wear of the sample to be tested and the dynamic friction pair. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the friction material surface peel strength testing device provided in an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the detection component provided in an embodiment of the present invention.

[0020] Among them, 1-drive spindle; 11-coupling; 21-sample clamping plate; 22-first retaining ring; 23-second retaining ring; 24-guide rod; 25-ball bearing; 26-first elastic element; 31-clamping screw; 32-positioning plate; 33-clamping plate; 34-second elastic element; 35-clamping plate; 4-sample to be tested; 5-dynamic friction pair; 6-drive motor; 7-torque sensor; 8-control assembly; 9-control cabinet. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] This invention provides a device for testing the peel strength of friction material surfaces; please refer to the appendix of the specification. Figures 1 to 2This application includes a drive assembly, which extends a drive spindle 1 into the interior of a detection assembly. Preferably, the detection assembly includes a sample clamp, which is coaxially sleeved on the outside of the drive spindle 1. The sample clamp has a receiving cavity, and the port of the receiving cavity faces away from the drive assembly. The receiving cavity can cooperate with the sample 4 to be tested and lock the position of the sample 4. The sample 4 is also sleeved on the outside of the drive spindle 1, and the drive spindle 1 can rotate axially with both. After the drive spindle 1 passes through the sample clamp, a ballast assembly is fixedly connected to the end of the drive spindle 1. A dynamic friction pair 5 is fixedly connected to the end face of the ballast assembly facing the port of the receiving cavity. The dynamic friction pair 5 is coaxially sleeved on the drive spindle 1, and the drive spindle 1 can drive the ballast assembly and the dynamic friction pair 5 to rotate together. It should be noted that several fiber brushes are provided on the end face of the dynamic friction pair 5 facing the receiving cavity. Each fiber brush is detachably connected to the dynamic friction pair 5, and the operator can install or remove them according to experimental needs. A certain number of fiber brushes are disassembled to simulate different levels of interference environments. In actual use, the operator holds the sample 4 to be tested in the sample fixture, then adjusts the ballast assembly to make the dynamic friction pair 5 abut against the side wall of the sample 4 to be tested. The fiber brushes apply a specified amount of pressure to it. Finally, the drive assembly is started, causing the drive spindle 1 to drive the dynamic friction pair 5 to rotate. The fiber brushes on the dynamic friction pair 5 move together, and the fiber brushes rub the surface of the sample 4 to be tested. In this application, the drive spindle 1 and the sample 4 to be tested are set separately, so that the position of the sample 4 to be tested is locked, and the drive spindle 1 and the dynamic friction pair 5 are fixedly connected. The pressure is applied by the ballast assembly so that the dynamic friction pair 5 and the sample 4 to be tested can rub against each other under a specified pressure. In addition, the fiber brushes simulate the influence of external objects such as mud and sand on the dynamic friction pair 5 and the sample 4 to be tested in the actual environment. The testing device provided by this application has a simple structure, low production cost, and can fully simulate the actual working environment, so that the detected material peel strength results are more accurate.

[0024] Please continue to refer to the attached instructions. Figure 2The sample clamp includes a sample clamp plate 21. A mating groove is provided on the end face of the sample clamp plate 21 facing away from the drive assembly. A first retaining ring 22 and a second retaining ring 23 are sequentially arranged at the port of the mating groove in the direction facing away from the drive assembly. Preferably, the inner diameter of the mating groove is equal to the inner diameter of the first retaining ring 22 and the second retaining ring 23. The ports of the three rings cooperate to form a cavity for accommodating the sample 4 to be tested. Further, after the mating groove is provided on the end face of the sample clamp plate 21, the end face of the sample clamp plate 21 is annular. Several first elastic elements 26 are vertically inserted at one edge of the annular end face near the inner wall of the mating groove. Each first elastic element 26 is evenly distributed around the axis of the drive shaft 1 and extends to the outside of the sample clamp plate 21. Correspondingly, a first annular groove is provided on the end face of the first retaining ring 22 near the sample clamp plate 21, and the first annular groove is located at the edge of the first retaining ring 22 near its inner diameter. A ring groove corresponds to each of the first elastic elements 26. The first elastic element 26 extends into the first ring groove to hold the first retaining ring 22. A second ring groove is provided on the end face of the second retaining ring 23 away from the sample 4 to be tested. The second ring groove is also located on the side of the second retaining ring 23 near the inner diameter. It should be noted that, in order to prevent the sample 4 to be tested from axially shifting, a positioning ring platform extends outward from the end of the sample 4 near the dynamic friction pair 5. The positioning ring platform cooperates with the second ring groove to further restrict the setting position of the sample 4 to be tested. In actual use, when the ballast assembly applies pressure to the dynamic friction pair 5, each of the first elastic elements 26 simultaneously holds the first retaining ring 22 and the second retaining ring 23. The second retaining ring 23 holds the positioning ring platform, so that the edge of the sample 4 to be tested is subjected to uniform force, and the sample 4 to be tested and the dynamic friction pair 5 are fully fitted to ensure the accuracy of the friction results between them.

[0025] Preferably, a plurality of guide rods 24 are vertically inserted at the edge of the annular sidewall near its outer diameter. After passing through the sample clamping plate 21, the guide rods 24 pass through the first retaining ring 22 and the second retaining ring 23 in sequence. A ball bearing 25 is provided between the guide rods 24 and the first retaining ring 22 and the second retaining ring 23. The ball bearing 25 is used to assist the first retaining ring 22 and the second retaining ring 23 in sliding along the predetermined direction of the guide rods 24. In addition, the first elastic member 26 extends beyond the sample clamping plate 21 by a length greater than the depth of the first annular groove. When the ballast assembly does not apply pressure, the first elastic member 26 holds the first retaining ring 22, so that the first retaining ring 22 and the sample clamping plate 21 are spaced apart. When the ballast assembly applies pressure, the contact process between the first retaining ring 22 and the sample clamping plate 21, and between the sample to be tested 4 and the dynamic friction pair 5 is more gentle.

[0026] Preferably, the ballast assembly includes a clamping screw 31, which is coaxially connected to the end of the drive spindle 1 away from the drive assembly. The drive spindle 1 can drive the clamping screw 31 to rotate synchronously. A positioning disk 32 is coaxially connected to the end of the clamping screw 31 connected to the drive spindle 1. The positioning disk 32 has a locking plate 35 on the end face near the sample 4 to be tested. Correspondingly, a locking groove is provided on the end face of the dynamic friction pair 5 away from the sample 4 to be tested. The edges of the locking groove and the locking plate 35 can be polygons of the same shape. After the locking groove and the locking plate 35 are engaged, the axial degree of freedom between the two is locked, so that the positioning disk 32 of the ballast assembly drives the dynamic friction pair 5 to rotate. In addition, the locking groove also restricts the radial degree of freedom between the dynamic friction pair 5 and the positioning disk 32, preventing the dynamic friction pair 5 from shifting during the friction process between the dynamic friction pair 5 and the sample 4 to be tested, thus affecting the friction test results of the sample 4 to be tested.

[0027] In addition, the ballast assembly also includes a clamping plate 33. A second elastic element 34 is provided between the clamping plate 33 and the positioning plate 32. The second elastic element 34 is sleeved on the outer periphery of the clamping rod 31. The two ends of the second elastic element 34 abut against the end faces of the positioning plate 32 and the clamping plate 33, respectively. The clamping plate 33 is threadedly connected to the clamping rod 31. When it is necessary to apply pressure to the dynamic friction pair 5, the clamping plate 33 is screwed towards the end closer to the sample 4 to be tested. The distance between the clamping plate 33 and the positioning plate 32 gradually decreases, and the second elastic element 34 is gradually compressed. The elastic force generated by the second elastic element 34 holds the positioning plate 32, so that the dynamic friction pair 5 applies pressure to the sample 4 to be tested, so as to meet the requirements of the friction test.

[0028] Please refer to the instruction manual appendix. Figure 1 On the end faces of the positioning plate 32 opposite to the clamping plate, there are respectively a first limiting rod and a second limiting rod. Both are cylindrical tubes sleeved around the outer periphery of the clamping screw 31. The diameter of the first limiting rod is slightly larger than the diameter of the second limiting rod. At the opposite ends of the first and second limiting rods, there are respectively a first shoulder and a second shoulder, and the first shoulder and the second shoulder are connected to the positioning plate 32 and the clamping plate, respectively. The diameter of the first shoulder is equal to the diameter of the clamping plate, and the diameter of the second shoulder is equal to the diameter of the first limiting rod. The second elastic element 34 The inner diameter of the spiral is equal to the diameter of the second shoulder. That is to say, the second elastic element 34 is respectively sleeved on the second shoulder and the first limiting rod, and the two ends of the second elastic element 34 abut against the end face of the pressure plate and the second shoulder, respectively. During the compression of the spring, the inner side of the second elastic element 34 is always in contact with the first limiting rod and the second shoulder to prevent the spring from bending and affecting the pressure it generates. In addition, a limiting groove is provided at the end of the first elastic element 26. The limiting groove is used to dock with the second limiting rod to limit the maximum sliding distance of the second limiting rod.

[0029] A baffle is provided at the end of the clamping screw 31 away from the drive spindle 1. The baffle is coaxially connected to the clamping screw 31. The baffle is used to restrict the clamping plate 33 on the clamping screw 31, preventing the second limiting member from pressing the clamping plate 33 and causing the clamping plate 33 to fall off the clamping screw 31 from the end away from the spindle.

[0030] Furthermore, the dynamic friction pair 5 is evenly provided with several fixing holes for installing fiber brushes. The distribution density and fiber diameter of the fiber brushes can be adjusted according to experimental requirements. For example, to simulate the scratching of coarse sand particles, coarser natural brown fiber brushes with a fiber diameter range of 0.5-1mm can be selected, with 5-8 groups distributed per square centimeter; to simulate the wear of fine abrasive chips, fine nylon fiber brushes with a fiber diameter range of 0.1-0.3mm can be selected, with 15-20 groups distributed per square centimeter.

[0031] Please refer to the instruction manual appendix. Figure 1 The drive assembly also includes a drive motor 6. The output end of the drive motor 6 is connected to a torque sensor 7 via a coupling. The output end of the torque sensor 7 is also connected to a coupling 11. This coupling 11 is used to connect to the drive spindle 1, so that the drive motor 6 provides power to the dynamic friction pair 5 while detecting the torque applied by the drive spindle 1. Furthermore, a control assembly 8 is provided between the torque sensor 7 and the detection assembly. The control assembly 8 is used to detect the pressure and temperature between the sample 4 to be tested and the dynamic friction pair 5. Specifically, a signal cable extends outward from the control assembly 8, and a strain gauge is connected to the end of the signal cable. The strain gauge is partially inserted between the dynamic friction pair 5 and the positioning plate 32. The strain gauge is used to detect the temperature and pressure of the dynamic friction pair so that the operator can judge whether the pressure applied by the clamping assembly meets the specifications.

[0032] Preferably, the testing assembly further includes a sealed box that at least contains the dynamic friction pair 5 and the sample 4 to be tested. The sealed box is equipped with a circulating water supply assembly for supplying experimental water between the dynamic friction pair 5 and the sample 4 to simulate an underwater working environment. In addition, a water receiving tank is provided below the sealed box for receiving experimental water overflowing from between the dynamic friction pair 5 and the sample 4 to be tested. The operator can judge the sealing performance of the sample 4 after friction based on the amount of leakage.

[0033] It should be noted that the detection component and the drive component are fixed on the support plate, and a control cabinet 9 is provided on the outside of the support plate. The control cabinet 9 is used to regulate the operation of the drive component.

[0034] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0035] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. A device for testing the surface stripping strength of a friction material, characterized by The utility model relates to a kind of test sample abrasion simulation device, including: Drive assembly, the drive spindle (1) of the drive assembly extends to detection assembly, the detection assembly includes test sample holder, the test sample holder is equipped with accommodating cavity, the accommodating cavity is used to be connected with the sample (4) to be measured, the test sample holder and the sample (4) to be measured are both set on the outside of the drive spindle (1), and the drive spindle (1) is used to rotate relative to the two, the end of the drive spindle (1) is connected with ballast assembly, dynamic friction pair (5) is equipped between the ballast assembly and the accommodating cavity, the dynamic friction pair (5) is fixedly connected with the ballast assembly, the dynamic friction pair (5) is detachably connected with several fiber brushes on the end face close to the sample (4) to be measured, the ballast assembly makes the dynamic friction pair (5) exert pressure on the sample (4) to be measured, the drive spindle (1) is used to drive the dynamic friction pair (5) to rotate, so that the fiber brush is worn to the sample (4) to be measured Simulation.

2. The friction material surface strip strength testing apparatus of claim 1, wherein, The test sample holder includes test sample holder plate (21), the test sample holder plate (21) is equipped with butt joint groove on the end face close to the ballast assembly, the butt joint groove is equipped with several first elastic members (26) along its axis direction close to the edge of its inner wall, each first elastic member (26) is evenly distributed around the axis of the drive spindle (1), the port of the butt joint groove is sequentially equipped with first snap ring (22) and second snap ring (23) to the end close to the ballast assembly, the first snap ring (22) is equipped with first ring groove close to the port edge of the test sample holder plate (21), the first ring groove is used to be connected with each first elastic member (26), the end of the sample (4) to be measured away from the test sample holder plate (21) extends positioning ring table to its outer periphery, the second snap ring (23) is equipped with second ring groove on the end face away from the first snap ring (22), which can be engaged with the positioning ring table, the first elastic member (26) holds the first snap ring (22) and the second snap ring (23), so that the sample (4) to be measured and the dynamic friction pair (5) are fully attached.

3. The friction material surface strip strength testing apparatus of claim 2, wherein, The test sample holder plate (21) is equipped with several guide rods (24) along its axis direction close to the edge of its outer wall, and the guide rod (24) penetrates the first snap ring (22) and the second snap ring (23), the guide rod (24) is equipped with ball bearing (25) between the first snap ring (22) and the second snap ring (23).

4. The friction material surface strip strength testing apparatus of claim 2, wherein, The ballast assembly comprises a compression screw rod (31) coaxially arranged with the driving main shaft (1), the compression screw rod (31) is coaxially provided with a positioning disc (32) at one end close to the driving main shaft (1), the positioning disc (32) is used to be connected with the dynamic friction pair (5), one end of the compression screw rod (31) away from the driving main shaft (1) is threadedly connected with a compression plate (33), the second elastic member (34) is sleeved between the compression plate (33) and the positioning disc (32), when the compression plate (33) is screwed towards the end close to the driving main shaft (1), the second elastic member (34) is compressed, and the positioning disc (32) applies pressure to the sample to be tested (4).

5. The friction material surface strip strength testing apparatus of claim 4, wherein, The end face of the dynamic friction pair (5) away from the sample to be tested (4) is provided with a clamping groove, the positioning disc (32) is provided with a clamping plate (35) matched with the clamping groove, and the clamping groove and the clamping plate (35) are used to limit the radial and axial degrees of freedom between the dynamic friction pair (5) and the positioning disc (32).

6. The friction material surface strip strength testing apparatus of claim 5, wherein, The end face of the positioning disc (32) opposite to the compression plate (33) respectively extends a first limiting rod and a second limiting rod, the end of the first limiting rod is provided with a limiting groove, the end of the second limiting rod away from the first limiting rod is respectively provided with a first shaft shoulder and a second shaft shoulder, the diameter of the second shaft shoulder is equal to that of the first limiting rod, the diameter of the first shaft shoulder is equal to that of the compression plate (33), the inner diameter of the second elastic member (34) is equal to the diameter of the second shaft shoulder, and the two ends of the second elastic member (34) respectively abut against the end face of the first shaft shoulder and the compression plate (33), after the compression plate (33) is screwed, the first limiting rod extends into the limiting groove.

7. The friction material surface strip strength testing apparatus of claim 1 wherein, The dynamic friction pair (5) is uniformly provided with a plurality of fixing holes for mounting the fiber brush.

8. The friction material surface strip strength testing apparatus of claim 1 wherein, The driving assembly further comprises a driving motor (6), the output end of the driving motor (6) is connected with a torque sensor (7) through a shaft coupling (11), and the output end penetrates through the torque sensor (7) and is connected with the driving main shaft (1).

9. The friction material surface strip strength testing apparatus of claim 8, wherein, The detection assembly further comprises a sealed box, and a circulating water supply assembly is arranged in the sealed box, the circulating water supply assembly is used to deliver experimental water between the dynamic friction pair (5) and the sample to be tested (4).

10. The friction material surface strip strength testing apparatus of claim 9, wherein, The torque sensor (7) and the detection assembly are provided with a control assembly (8), the control assembly (8) is used to detect the pressure and temperature between the sample to be tested (4) and the dynamic friction pair (5), and control the operation of the circulating water supply assembly.

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