Rubber abrasion machine with liquid environment testing function

Abstract

The utility model belongs to the technical field of abrasion machines, and provides a rubber abrasion machine with a liquid environment test function, which comprises a support base, an abrasion machine main body is arranged on the support base, the abrasion machine main body comprises an adjustable-speed motor, the output end of the adjustable-speed motor is connected with a transmission shaft, the other end of the transmission shaft is coaxially fixed with a friction wheel, and the friction wheel is fixed on the support base. A lifting portal frame capable of lifting up and down is arranged at the top of the supporting base and located at one end of the friction wheel, a sample clamping block is installed on the lifting portal frame and located above the friction wheel, a liquid medium box is installed below the friction wheel, and the lowest end of the friction wheel is lower than the upper edge of the liquid medium box; and the liquid medium box is fixedly arranged on the transmission shaft fixing seat. Experiments can be carried out under different working conditions by injecting different liquids through the liquid medium box, and the liquid in the liquid medium box is changed through the liquid changing mechanism, so that the manpower expenditure is reduced, and the liquid changing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of abrasion machines, and particularly relates to a rubber abrasion machine with liquid environment testing. Background Technique

[0002] With the continuous progress of technology and the rapid development of the rubber industry, rubber materials are widely used in fields such as tires, seals, and shock-absorbing components due to their unique elasticity, wear resistance, and other characteristics. However, during the use of rubber products, due to contact with various surfaces and relative movement, there will be abrasion phenomena in rubber products, which will affect the service life and performance of products. Therefore, rubber abrasion research has become one of the hotspots in current rubber performance research.

[0003] A rubber abrasion machine is a device widely used in the rubber industry for testing the performance of rubber materials. It mostly makes rubber specimens undergo friction, and evaluates the abrasion performance of rubber by measuring the weight reduction of rubber specimens before and after the experiment. There are various rubber abrasion experimental devices on the market at present, such as Akron abrasion testing machines, rotating roller abrasion machines, etc. Existing rubber abrasion machines often only have abrasion conditions in a single environmental medium and cannot comprehensively and truly reflect the complex abrasion process of rubber materials in actual use.

[0004] In view of this, we provide a rubber abrasion machine with liquid environment testing. Content of the Utility Model

[0005] The utility model provides a rubber abrasion machine with liquid environment testing to solve the problems raised in the above background technique.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] The utility model provides a rubber abrasion machine with liquid environment testing, including a support base. A abrasion machine main body is installed on the top of the support base. The abrasion machine main body includes a speed-regulating motor. The output end of the speed-regulating motor is connected to a transmission shaft. One end of the transmission shaft away from the speed-regulating motor is coaxially and fixedly connected with a friction wheel. The transmission shaft is fixedly installed on the support base through a transmission shaft fixing seat. A vertically lifting lifting gantry is arranged at one end of the support base above the friction wheel. A specimen clamping block is installed on the lifting gantry. The specimen clamping block is located above the friction wheel. A liquid medium box is installed below the friction wheel. The lowest end of the friction wheel is lower than the upper edge of the liquid medium box. The liquid medium box is fixedly installed on the transmission shaft fixing seat. A liquid outlet is arranged at the bottom of the liquid medium box. A liquid inlet is arranged on the side of the liquid medium box. The liquid medium box is communicated with a liquid changing mechanism through the liquid outlet and the liquid inlet. A one-way flow valve is installed at the connection between the liquid changing mechanism and the liquid inlet.

[0008] Furthermore, there are two liquid outlets, including a first liquid medium outlet and a second liquid medium outlet, and there are two liquid inlets, including a first liquid medium inlet and a second liquid medium inlet.

[0009] Furthermore, the liquid changing mechanism includes a filter valve and a liquid medium storage tank. There is a partition inside the liquid medium storage tank. There is one partition, which divides the liquid medium storage tank into two closed cavities. The two cavities are the first cavity and the second cavity from top to bottom in sequence. The first cavity is set as the first liquid medium storage cavity, and the second cavity is set as the second liquid medium storage tank. The filter valve includes a first liquid medium filter valve and a second liquid medium filter valve. One end of the first liquid medium filter valve is connected to the first liquid medium outlet. The end of the first liquid medium filter valve far from the first liquid medium outlet is connected with a first liquid medium suction pipe. The other end of the first liquid medium suction pipe is connected to the input end of a first liquid pumping machine. The output end of the first liquid pumping machine is communicated with the first cavity. The first cavity is connected with a first liquid medium delivery pipe. The end of the first liquid medium delivery pipe far from the first cavity is communicated with the input end of a first delivery pump machine. The output end of the first delivery pump machine is connected to the first liquid medium inlet. One end of the second liquid medium filter valve is connected to the second liquid medium outlet. The end of the second liquid medium filter valve far from the second liquid medium outlet is connected with a second liquid medium suction pipe. The other end of the second liquid medium suction pipe is connected to the input end of a second liquid pumping machine. The output end of the second liquid pumping machine is communicated with the second cavity. The second cavity is connected with a second liquid medium delivery pipe. The end of the second liquid medium delivery pipe far from the second cavity is communicated with the input end of a second delivery pump machine. The output end of the second delivery pump machine is connected to the second liquid medium inlet.

[0010] Furthermore, the structures of the first liquid medium filter valve and the second liquid medium filter valve are the same. The first liquid medium filter valve includes a valve body and a sleeve. The valve body is provided with a receiving cavity with openings at both ends. One end of the receiving cavity is the liquid inlet end, and the other end is the liquid outlet end. A valve sleeve is detachably provided at the liquid outlet end. A filter screen is provided inside the valve sleeve. A sealing seat is provided near the liquid inlet end in the receiving cavity. A through-flow hole is provided at the middle position of the sealing seat. The opening of the through-flow hole near the liquid inlet end is small, and the opening away from the liquid inlet end is large. The through-flow hole is in a trumpet shape. A first spring is provided in the through-flow hole. One end of the first spring is fixedly connected to the side wall of the through-flow hole, and the other end of the first spring is connected to a plugging sphere. A rotating rod is provided above the plugging sphere. A spherical end is provided at one end of the rotating rod close to the plugging sphere, and the other end of the rotating rod is fixedly connected to a knob. A flange is provided at the middle position of the rotating rod. A convex block is provided above the flange. The rotating rod is arranged inside the sleeve. The sleeve is fixedly connected to the valve body. A spiral groove is provided on the sleeve, and a locking groove is provided at the end of the spiral groove. The convex block is inserted into the spiral groove, and self-locking is formed when the convex block is located in the locking groove. A stop block is provided inside the sleeve, and a second spring is provided between the stop block and the flange.

[0011] Furthermore, liquid filling ports are provided on the sides of both the first cavity and the second cavity.

[0012] Furthermore, a temperature measuring device is also installed on the top of the support base. The temperature measuring device includes an infrared thermometer, and the infrared thermometer is arranged on the right side of the friction wheel.

[0013] Furthermore, a laser displacement sensor and a force sensor are installed on the lifting gantry. The laser displacement sensor is arranged on the right side of the lifting gantry, and the force sensor is arranged on the specimen clamping block.

[0014] Furthermore, a splash-proof protective cover is installed on the top of the support base. The lifting gantry, the friction wheel, the specimen clamping block, and the liquid medium box are all located inside the splash-proof protective cover.

[0015] Furthermore, a torque sensor is provided at the connection between the output end of the speed-regulating motor and the transmission shaft.

[0016] Compared with the prior art, the present utility model has the following technical effects:

[0017] 1. The liquid medium box provided in the present utility model can be filled with different liquid media, enabling the rubber sample to conduct friction and wear tests under different working conditions, so as to fully simulate the friction and wear behavior of the rubber tire in the actual application environment.

[0018] 2. The liquid replacement mechanism provided by the present utility model can change the liquid medium composition in the liquid medium box through the liquid replacement mechanism, eliminating the need to disassemble the liquid medium box for manual replacement of the liquid medium, greatly reducing the labor expenditure of the staff and improving the liquid replacement efficiency. Moreover, the liquid replacement mechanism can filter out the rubber chips that fall into the liquid medium during the rubber friction experiment, promoting the recycling of the liquid medium.

[0019] 3. The splash-proof protective cover provided by the present utility model prevents the rubber chips with liquid medium from flying around during the sample test, greatly ensuring the hygiene of the laboratory test environment and the safety of the laboratory test personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the rubber abrasion machine according to the embodiment of the present utility model;

[0021] Figure 2 It is a three-dimensional structural diagram of the side of the rubber abrasion machine according to the embodiment of the present utility model;

[0022] Figure 3 It is a schematic structural diagram of the liquid replacement mechanism according to the embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the liquid medium storage tank according to the embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of the filter valve according to the embodiment of the present utility model;

[0025] Figure 6 It is a three-dimensional schematic diagram of the rotating rod and the sleeve according to the embodiment of the present utility model.

[0026] Description of the reference numerals in the drawings: 1. Support base, 2. Speed-regulating motor, 3. Torque sensor, 4. Transmission shaft, 5. Friction wheel, 6. Specimen clamping block, 7. Liquid medium box, 8. Lifting gantry, 9. Force sensor, 10. Laser displacement sensor, 11. Splash-proof protective cover, 12. Infrared thermometer, 13. Transmission shaft fixing seat, 141. Filter valve, 1411. First liquid medium filter valve, 14111. Valve body, 14112. Accommodating cavity, 14113. Liquid inlet end, 14114. Liquid outlet end, 14115. Valve sleeve, 14116. Filter screen, 14117. Sealing seat, 14118. Flow-through hole, 14119. First spring, 14120. Plugging sphere, 14121. Rotating rod, 14122. Spherical end, 14123. Knob, 14124. Flange, 14125. Protrusion, 14126. Sleeve, 14127. Spiral groove, 14128. Stopper, 14129. Second spring, 14130. Locking groove, 1412. Second liquid medium filter valve, 142. First liquid medium suction pipe, 143. First suction pump, 144. Liquid medium storage tank, 1441. First cavity, 1442. Second cavity, 1443. Liquid replenishing port, 1444. Partition board, 145. First liquid medium supply pipe, 146. Second liquid medium suction pipe, 147. Second suction pump, 148. Second liquid medium supply pipe, 149. Liquid supply pump, 1491. First liquid supply pump, 1492. Second liquid supply pump. Detailed implementation manners

[0027] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are all exemplary and are intended to provide further descriptions of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0029] It should be noted that the terms used herein are only for describing the specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, mechanisms, and / or their combinations.

[0030] As an example, please refer to Figures 1 to 6, this embodiment provides a rubber abrasion machine with liquid environment testing, including a support base 1. The support base 1 can adopt a frame structure, or be formed by welding steel pipes or I-beams. A fixed plate is fixed at the top of the frame structure. The support base 1 plays an overall supporting role for the abrasion machine body of this embodiment. The abrasion machine body is installed on the top of the support base 1. The abrasion machine body includes a speed-regulating motor 2. The output end of the speed-regulating motor 2 is connected to one end of a transmission shaft 4 through a coupling. The other end of the transmission shaft 4 passes through a transmission shaft fixing seat 13 and is coaxially fixed with a friction wheel 5. The transmission shaft fixing seat 13 is fixedly installed on the support base 1.

[0031] A lifting gantry 8 is installed on the top of the support base 1 in a liftable manner, and the lifting gantry 8 is located at one end of the support base 1 where the friction wheel 5 is provided. A specimen clamping block 6 is installed on the lifting gantry 8. The specimen clamping block 6 is located above the friction wheel 5. A liquid medium box 7 is installed below the friction wheel 5, and the bottom end of the friction wheel 5 is lower than the upper edge of the liquid medium box 7. The liquid medium box 7 is fixedly installed on the transmission shaft fixing seat 13. When conducting a rubber abrasion experiment, place a rubber sample on the specimen clamping block 6, and inject sufficient liquid medium into the liquid medium box 7. After preparation, start the speed-regulating motor 2. The speed-regulating motor 2 drives the transmission shaft 4 and the friction wheel 5 to rotate. When the friction wheel 5 operates, a part of the friction wheel 5 contacts the liquid medium in the liquid medium box 7, and a liquid medium film adheres to the surface of the contact part. The friction wheel 5 rotates, and under this liquid medium, the rubber sample is rubbed to test the performance of the rubber sample under such working conditions. By setting the liquid medium box, different liquid media can be injected into the liquid medium box 7, enabling the rubber sample to be subjected to friction and abrasion tests under different working conditions, thereby fully simulating the friction and abrasion behavior of rubber tires in the actual application environment.

[0032] The bottom of the liquid medium box 7 is provided with a liquid outlet, and the side of the liquid medium box 7 is provided with a liquid inlet. The liquid medium box 7 is connected to a liquid changing mechanism through the liquid outlet and the liquid inlet. A one-way flow valve is installed at the connection between the liquid changing mechanism and the liquid inlet. The one-way flow valve ensures that the liquid medium flows unidirectionally into the liquid medium box 7 and cannot flow back, thus preventing the liquid medium in the liquid medium box 7 from flowing back when it is higher than the liquid inlet. By setting the liquid changing mechanism, the liquid medium in the liquid medium box 7 can be replaced through the liquid changing mechanism, eliminating the need to disassemble the liquid medium box 7 to manually replace the liquid medium in it, greatly reducing the labor expenditure of the staff and improving the liquid changing efficiency.

[0033] Specifically, the rubber abrasion test is carried out for abrasion testing in a liquid environment. The most commonly used liquid media are water and oil in two liquid environments. The liquid medium in the liquid medium box 7 is often changed between water and oil, and these two liquid media require independent liquid replacement operations. The liquid outlet of the liquid medium box 7 has two, including a first liquid medium outlet and a second liquid medium outlet, and the liquid inlet has two, including a first liquid medium inlet and a second liquid medium inlet. The two liquid inlets can be set on the same side or on different sides. The first liquid medium outlet and the first liquid medium inlet are used for the outlet and inlet of water, and the second liquid medium outlet and the second liquid medium inlet are used for the outlet and inlet of oil.

[0034] Specifically, the liquid replacement mechanism includes a filter valve 141 and a liquid medium storage tank 144. A partition 1444 is provided inside the liquid medium storage tank 144. There is one partition 1444, and the partition 1444 divides the liquid medium storage tank 144 into two closed cavities. The two cavities are successively the first cavity 1441 and the second cavity 1442 from top to bottom. The first cavity 1441 is set as the first liquid medium storage cavity for storing non-oily liquid media. In this embodiment, the first cavity 1411 is used for storing water. The second cavity 1442 is set as the second liquid medium storage tank for storing oily liquid media. In this embodiment, the second cavity 1442 is used for storing oil.

[0035] Specifically, the filter valve 141 includes a first liquid medium filter valve 1411 and a second liquid medium filter valve 1412. One end of the first liquid medium filter valve 1411 is connected to the first liquid medium outlet. The end of the first liquid medium filter valve 1411 far from the first liquid medium outlet is connected to a first liquid medium pumping pipe 142. The other end of the first liquid medium pumping pipe 142 is connected to the input end of a first pumping pump 143. The output end of the first pumping pump 143 is communicated with the first cavity 1441. The first cavity 1441 is connected to the first liquid medium inlet through a first liquid medium feeding pipe 145. When replacing the water in the liquid medium box 7 with oil, open the first liquid medium filter valve 1411 and start the first pumping pump 143. The first pumping pump 143 pumps the water in the liquid medium box 7. The water flows through the first pumping pump 143 through the first liquid medium pumping pipe 142 and enters the first cavity 1441. After the water in the liquid medium box 7 is drained, turn off the first pumping pump 143, open the second feeding pump 1492. The second feeding pump 1492 pumps the oil in the second cavity 1442. The oil flows through the second liquid medium feeding pipe 148 through the second pumping pump 1492 and enters the liquid medium box 7. After adding enough oil, turn off the second pumping pump 1492.

[0036] One end of the second liquid medium filter valve 1412 is connected to the second liquid medium outlet. The end of the second liquid medium filter valve 1412 away from the second liquid medium outlet is connected to a second liquid medium suction pipe 146. The other end of the second liquid medium suction pipe 146 is connected to the input end of a second liquid suction pump 147. The output end of the second liquid suction pump 147 communicates with the second cavity 1442. The second cavity 1442 is connected to the second liquid medium inlet through a second liquid medium supply pipe 148. When replacing the oil in the liquid medium cartridge 7 with water, the principle is the same as when replacing water with oil, which will not be elaborated here.

[0037] Specifically, the first liquid medium filter valve 1411 is used to filter water, and the second liquid medium filter valve 1412 is used to filter oil. The first liquid medium filter valve 1411 and the second liquid medium filter valve 1412 have the same structure and the same function. Taking the first liquid medium filter valve 1411 as an example, the second liquid medium filter valve 1412 will not be elaborated here. The first liquid medium filter valve 1411 includes a valve body 14111 and a sleeve 14126. An accommodating cavity 14112 with both ends open is provided in the valve body 14111. One end of the accommodating cavity 14112 is a liquid inlet end 14113, and the other end of the accommodating cavity 14112 is a liquid outlet end 14114. A valve sleeve 14115 is detachably installed at the liquid outlet end 14114 so that the staff can remove the valve sleeve 14115 to facilitate the cleaning of the filter net 14116. A filter net 14116 is provided in the valve sleeve 14115. The filter net 14116 is used to filter the rubber chips that fall into the liquid medium box 7 during the rubber wear experiment so that the liquid medium can be reused. A sealing seat 14117 is provided in the accommodating cavity 14112 near the liquid inlet end 14113. A through-flow hole 14118 is provided in the middle of the sealing seat 14117. The opening of the through-flow hole 14118 near the liquid inlet end 14113 is small, and the opening of the through-flow hole 14118 away from the liquid inlet end 14113 is large. The through-flow hole 14118 is in a trumpet shape. A first spring 14119 is provided in the through-flow hole 14118. One end of the first spring 14119 is fixedly connected to the side wall of the through-flow hole 14118, and the other end of the first spring 14119 is connected to a plugging sphere 14120. A rotating rod 14121 is provided above the plugging sphere 14120. A spherical end 14122 is provided at the end of the rotating rod 14121 close to the plugging sphere 14120. The other end of the rotating rod 14121 is fixedly connected to a knob 14123. A flange 14124 is provided at the middle position of the rotating rod 14121. A convex block 14125 is provided above the flange 14124. The rotating rod 14121 is arranged in the sleeve 14126. The sleeve 14126 is fixedly connected to the valve body 14111. A spiral groove 14127 is provided on the sleeve 14126. A locking groove 14130 is provided at the end of the spiral groove 14127. The convex block 14125 is inserted into the spiral groove 14127. When the convex block 14125 is located in the locking groove 14130, self-locking is formed. A stop block 14128 is provided in the sleeve 14126. A second spring 14129 is provided between the stop block 14128 and the flange 14124.During use, connect the liquid inlet end 14113 to the first liquid medium outlet, and connect the liquid outlet end 14114 to the first liquid medium suction pipe 142. Rotate the knob 14123, and the knob 14123 drives the rotating rod 14121 to rotate. The convex block 14125 on the rotating rod 14121 enters the spiral groove 14127 from the locking groove 14130. The convex block 14125 moves along the spiral groove 14127 to the top of the spiral groove 14127. The rotating rod 14121 and the spherical end 14122 also move upward until they completely enter the sleeve 14126. The first spring 14119 pushes the plugging sphere 14120 to move towards the end away from the liquid inlet end 14113, and the first liquid medium filter valve 1411 is opened. The water in the liquid medium box 7 flows into the first liquid medium suction pipe 142. When the water in the liquid medium box 7 runs out, rotate the knob 14123 in the reverse direction. The convex block 14125 on the rotating rod 14121 moves downward along the spiral groove 14127 until it moves to the locking groove 14130 to generate self-locking. The spherical end 14122 at the lower end of the rotating rod 14121 squeezes the plugging sphere 14120 to the left, and the plugging sphere 14120 plugs the flow hole 14188.

[0038] Specifically, liquid filling ports 1443 are provided on the sides of the first cavity 1441 and the second cavity 1442. The liquid filling ports are used to supplement the water in the first cavity 1441 and the oil in the second cavity 1442.

[0039] Specifically, a temperature measuring device is also installed on the top of the support base 1. The temperature measuring device includes an infrared thermometer 12. The infrared thermometer 12 is arranged on the right side of the friction wheel 5. The infrared thermometer 12 is used to measure the temperature between the friction wheel 5 and the rubber sample in real time, so that the operator can understand the situation of the rubber abrasion experiment.

[0040] Specifically, a laser displacement sensor 10 and a force sensor 9 are installed on the lifting gantry 8. The laser displacement sensor 10 is arranged on the right side of the lifting gantry 8. The laser displacement sensor 10 is used to measure the distance between the friction wheel 5 and the rubber sample. The force sensor 9 is arranged above the specimen clamping block 6. The force sensor 9 is used to measure the magnitude of the pressure between the rubber sample and the friction wheel 5, so that the operator can adjust the pressure between the rubber sample and the friction wheel 5 by adjusting the up and down movement of the lifting gantry 8.

[0041] Specifically, a splash-proof protective cover 11 is installed on the top of the support base 1. The lifting gantry 8, the friction wheel 5, the specimen clamping block 6, and the liquid medium box 7 are all located inside the splash-proof protective cover 11. The splash-proof protective cover 11 can prevent the rubber chips with liquid medium from splashing everywhere during the experiment, polluting the laboratory environment and splashing onto the laboratory testers, ensuring the cleanliness of the laboratory environment and the safety of laboratory operators.

[0042] Specifically, a torque sensor 3 is provided at the connection between the output end of the speed-regulating motor 2 and the transmission shaft 4. The torque sensor 3 can detect the rotational torque of the speed-regulating motor 2, so that the operator can adjust the speed of the speed-regulating motor 2 according to the magnitude of the rotational torque, thereby keeping the speeds of the transmission shaft 4 and the friction wheel 5 within the range allowed by the wear experiment and maintaining the experimental accuracy.

[0043] The above are only the preferred embodiments of the present disclosure and are not used to limit the present disclosure. For those skilled in the art, the present disclosure can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included within the protection scope of the present disclosure.

[0044] Although the specific implementation manners of the present disclosure have been described above in conjunction with the accompanying drawings, it is not a limitation on the protection scope of the present disclosure. Those skilled in the art should understand that, based on the technical solutions of the present disclosure, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present disclosure.

Claims

1. A rubber abrasion machine with liquid environment testing, characterized in that, It includes a support base (1), on the top of which a wear tester main body is installed. The wear tester main body includes a speed-regulating motor (2), the output end of the speed-regulating motor (2) is connected to a transmission shaft (4), and one end of the transmission shaft (4) away from the speed-regulating motor (2) is coaxially and fixedly connected to a friction wheel (5). The transmission shaft (4) is fixedly installed on the support base (1) through a transmission shaft fixing seat (13). At one end of the friction wheel (5) on the top of the support base (1), there is a vertically lifting lifting gantry (8). A specimen clamping block (6) is installed on the lifting gantry (8). The specimen clamping block (6) is located above the friction wheel (5). A liquid medium box (7) is installed below the friction wheel (5). The lowest end of the friction wheel (5) is lower than the upper edge of the liquid medium box (7). The liquid medium box (7) is fixedly installed on the transmission shaft fixing seat (13). The bottom of the liquid medium box (7) is provided with a liquid outlet, and the side of the liquid medium box (7) is provided with a liquid inlet. The liquid medium box (7) is communicated with a liquid changing mechanism through the liquid outlet and the liquid inlet, and a one-way flow valve is installed at the connection of the liquid changing mechanism and the liquid inlet.

2. The rubber abrasion machine with liquid environment test according to claim 1, wherein There are two liquid outlets, including a first liquid medium outlet and a second liquid medium outlet. There are two liquid inlets, including a first liquid medium inlet and a second liquid medium inlet.

3. The rubber abrasion machine with liquid environment test according to claim 2, characterized in that, The liquid changing mechanism includes a filtration valve (141) and a liquid medium storage tank (144). A partition (1444) is provided inside the liquid medium storage tank (144). There is one partition (1444), which divides the liquid medium storage tank (144) into two closed cavities. The two cavities are the first cavity (1441) and the second cavity (1442) in sequence from top to bottom. The first cavity (1441) is set as the first liquid medium storage cavity, and the second cavity (1442) is set as the second liquid medium storage tank. The filtration valve (141) includes a first liquid medium filtration valve (1411) and a second liquid medium filtration valve (1412). One end of the first liquid medium filtration valve (1411) is connected to the first liquid medium outlet. The end of the first liquid medium filtration valve (1411) away from the first liquid medium outlet is connected to a first liquid medium suction pipe (142). The other end of the first liquid medium suction pipe (142) is connected to the input end of a first suction pump (143). The output end of the first suction pump (143) is communicated with the first cavity (1441). The first cavity (1441) is connected to a first liquid medium delivery pipe (145). The end of the first liquid medium delivery pipe (145) away from the first cavity (1441) is communicated with the input end of a first delivery pump (1491). The output end of the first delivery pump (1491) is connected to the first liquid medium inlet. One end of the second liquid medium filtration valve (1412) is connected to the second liquid medium outlet. The end of the second liquid medium filtration valve (1412) away from the second liquid medium outlet is connected to a second liquid medium suction pipe (146). The other end of the second liquid medium suction pipe (146) is connected to the input end of a second suction pump (147). The output end of the second suction pump (147) is communicated with the second cavity (1442). The second cavity (1442) is connected to a second liquid medium delivery pipe (148). The end of the second liquid medium delivery pipe (148) away from the second cavity (1442) is communicated with the input end of a second delivery pump (1492). The output end of the second delivery pump (1492) is connected to the second liquid medium inlet.

4. The rubber abrasion machine with liquid environment test according to claim 3, characterized in that, The first liquid medium filter valve (1411) has the same structure as the second liquid medium filter valve (1412). The first liquid medium filter valve (1411) includes a valve body (14111) and a sleeve (14126). An accommodating cavity (14112) with both ends open is provided in the valve body (14111). One end of the accommodating cavity (14112) is a liquid inlet end (14113), and the other end of the accommodating cavity (14112) is a liquid outlet end (14114). A valve sleeve (14115) is detachably provided at the liquid outlet end (14114). A filter screen (14116) is provided in the valve sleeve (14115). A sealing seat (14117) is provided in the accommodating cavity (14112) near the liquid inlet end (14113). A through-flow hole (14118) is provided at the middle position of the sealing seat (14117). The opening of the through-flow hole (14118) near the liquid inlet end (14113) is small, and the opening of the through-flow hole (14118) away from the liquid inlet end (14113) is large. The through-flow hole (14118) is in a trumpet shape. A first spring (14119) is provided in the through-flow hole (14118). One end of the first spring (14119) is fixedly connected to the side wall of the through-flow hole (14118), and the other end of the first spring (14119) is connected to a plugging sphere (14120). A rotating rod (14121) is provided above the plugging sphere (14120). A spherical end (14122) is provided at the end of the rotating rod (14121) close to the plugging sphere (14120). The other end of the rotating rod (14121) is fixedly connected to a knob (14123). A flange (14124) is provided at the middle position of the rotating rod (14121). A convex block (14125) is provided above the flange (14124). The rotating rod (14121) is arranged in the sleeve (14126). The sleeve (14126) is fixedly connected to the valve body (14111). A spiral groove (14127) is provided on the sleeve (14126). A locking groove (14130) is provided at the end of the spiral groove (14127). The convex block (14125) is inserted into the spiral groove (14127). When the convex block (14125) is located in the locking groove (14130), self-locking is formed. A stop block (14128) is provided in the sleeve (14126). A second spring (14129) is provided between the stop block (14128) and the flange (14124).

5. The rubber abrasion machine with liquid environment test according to claim 3, characterized in that, Liquid replenishing ports (1443) are provided on the sides of both the first cavity (1441) and the second cavity (1442).

6. The rubber abrasion machine with liquid environment test according to claim 1, characterized in that A temperature measuring device is installed on the top of the support base (1). The temperature measuring device includes an infrared thermometer (12), and the infrared thermometer (12) is arranged on the right side of the friction wheel (5).

7. The rubber abrasion machine with liquid environment test according to claim 1, characterized in that, A laser displacement sensor (10) and a force sensor (9) are installed on the lifting gantry (8). The laser displacement sensor (10) is arranged on the right side of the lifting gantry (8), and the force sensor (9) is arranged on the specimen clamping block (6).

8. The rubber abrasion machine with liquid environment test according to claim 1, characterized in that, A splash-proof protective cover (11) is installed on the top of the support base (1). The lifting gantry (8), the friction wheel (5), the specimen clamping block (6), and the liquid medium box (7) are all located inside the splash-proof protective cover (11).

9. The rubber abrasion machine with liquid environment test according to claim 1, characterized in that, A torque sensor (3) is provided at the connection between the output end of the speed-regulating motor (2) and the transmission shaft (4).

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