Friction wear equipment

Abstract

The invention discloses frictional wear equipment, which comprises a working platform, a protection mechanism, a test machine head and a test disc, the protection mechanism and a displacement assembly are both located on the working platform, the displacement assembly comprises a lifting plate, the test machine head is located above the working platform and is in sliding connection with the lifting plate, and the test disc is located on the working platform. The test disc is positioned below the test machine head and is rotationally arranged at the top of the working platform; the protection mechanism comprises two liquid baffles and two arc-shaped plates. The two liquid baffles are inserted into the working platform at intervals and located on the front side and the rear side of the lifting plate. Through the two liquid baffles and the two arc-shaped plates which are arranged at intervals, the two liquid baffles can block lubricating liquid splashing in the front-back direction, the two arc-shaped plates can block lubricating liquid splashing in the left-right direction, the lifting plate slides up and down between the two liquid baffles, and the two arc-shaped plates can move along with movement of the testing machine head; therefore, the splashing of the lubricating liquid can be prevented, the movement of the testing machine head can not be blocked, and the positions of the testing machine head and the protective cover can be further flexibly adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of testing machines, and particularly relates to a friction and wear device. Background Art

[0002] A friction and wear device, namely a friction and wear testing machine, is a special experimental instrument for testing the performance of materials, coatings or lubricants under friction and wear conditions. It simulates different motion forms, loads, temperatures and environmental conditions by using different testing machine heads to friction test samples, and evaluates key parameters such as the wear resistance, friction coefficient, lubrication performance, etc. of the test samples under the friction of different testing machine heads, providing data support for industrial research and development and quality control.

[0003] In the prior art, some friction and wear tests need to be carried out under lubrication conditions. Such tests require continuous addition of lubricating oil to the friction area during the test. When adding lubricating oil during the test, oil splashing will occur during the test of the friction and wear device. To avoid oil splashing, a common method is to increase the protective cover.

[0004] However, when testing some sliding friction and wear, the friction testing machine head needs to move. At this time, the protective cover will block the movement of the friction testing machine head, and its position relative to the friction testing machine head cannot be adjusted flexibly, which will cause mutual collision between the two. Summary of the Invention

[0005] The purpose of the present invention is to provide a friction and wear device that can flexibly adjust the position of the testing machine head and the protective cover.

[0006] To achieve the above object, a friction and wear device is provided, which includes: a working platform, a protection mechanism, a displacement mechanism, a testing machine head and a test disk. The protection mechanism and the displacement assembly are both located on the working platform. The displacement assembly includes a lifting plate. The testing machine head is located above the working platform and is slidably connected to the lifting plate. The test disk is located below the testing machine head and is rotatably arranged on the top of the working platform. The protection mechanism includes two liquid blocking plates and two arc-shaped plates. The two liquid blocking plates are both inserted into the working platform at intervals and are located on the front and rear sides of the lifting plate. The two arc-shaped plates are respectively arranged on the left and right sides of the testing machine head. The tops of the two arc-shaped plates are both slidably connected to the lifting plate. Sliding grooves are respectively formed at the left and right ends of the lifting plate. Sliding rods are respectively arranged at the tops of the two arc-shaped plates and are slidably arranged in the sliding grooves. A plurality of accommodating cavities are respectively arranged on the opposite sides of the two sliding grooves of the lifting plate. A plurality of tension springs are respectively arranged on the opposite sides of the two sliding rods and are received in the accommodating cavities. The ends of the plurality of tension springs far away from the sliding rods are fixedly connected to the end walls of the corresponding accommodating cavities. The bottoms of the two arc-shaped plates are both slidably inserted with arc-shaped plug plates, and the bottoms of the two plug plates are both in contact with the working platform. A liquid collecting groove in a square shape is arranged on the top of the working platform inside the two liquid blocking plates.

[0007] The working principle of the present invention is as follows: an infusion hose is arranged on the test head, which can transport external lubricating liquid into the test head and spray it out from the test head; when the friction and wear device is used to test the sample to be tested, the sample is clamped at the bottom of the test head, and the displacement mechanism is started. The displacement mechanism transports the test head and the sample to the top of the test disk so that the sample abuts against the test disk. During the test, the test disk rotates, and the rotating test disk rubs the sample, so that the friction and wear data of the sample can be obtained; when lubricating liquid is added during the test, the lubricating liquid is sprayed out of the test head and reaches the sample. When the sample is rubbed, the lubricating liquid on the sample splashes around, among which a part of the splashed lubricating liquid The lubricating fluid falls on the liquid baffle plate, and another part of the lubricating fluid falls on the arc plate and the plug plate; when the lifting plate is lowered to the lowest height, at this time, the distance from the top of the arc plate to the bottom of the plug plate is the same as the height of the test machine head and the test disk, when the lifting plate moves upward from the lowest height, the arc plate moves upward with the upward movement of the lifting plate, and the plug plate extends out of the bottom of the arc plate, so that the total height of the arc plate and the plug plate becomes longer; a push rod is provided on the test machine head, and when the test machine head moves in the left and right directions, the push rod on the test machine head will abut against the arc plate and push the corresponding arc plate, and when the arc plate moves, the compression spring connected thereto will be stretched, and when the test machine head is reset, the stretched compression spring can reset the corresponding arc plate.

[0008] According to the friction and wear equipment, guide plates are obliquely arranged on opposite sides of the two liquid baffles, and the bottom of the guide plates is inserted into the liquid collecting tank.

[0009] By arranging the guide plate on the liquid baffle plate, when the lubricating liquid splashes onto the liquid baffle plate, the lubricating liquid on the liquid baffle plate will flow into the liquid collecting tank along the guide plate.

[0010] According to the friction and wear equipment, a plurality of balls are rollingly arranged at the bottom of the two inserting plates, and the bottoms of the plurality of balls are in contact with the working platform.

[0011] By arranging a ball bearing at the bottom of the plug plate, the contact area between the plug plate and the working platform can be reduced. When the plug plate moves with the arc plate, the ball bearing rolls on the working platform, thereby facilitating the movement of the plug plate along the working platform.

[0012] According to the friction and wear equipment described, the displacement mechanism includes a gantry, a lifting hydraulic cylinder, a driving motor and a driving screw. The lifting plate is slidingly connected to the gantry, the lifting hydraulic cylinder is located at the top of the gantry, the output end of the lifting hydraulic cylinder is fixedly connected to the top of the lifting plate, the driving motor is located at the top of the lifting plate, the driving screw is rotatably arranged at the bottom of the lifting plate, the output end of the driving motor is transmission-connected to the driving screw through a synchronous drive assembly, and the top of the testing machine head is threadedly connected to the driving screw.

[0013] The synchronous drive assembly includes a synchronous belt and two synchronous pulleys. The two synchronous pulleys are respectively fixedly sleeved on the output shaft of the drive motor and the drive screw. The synchronous belt is wound around the two synchronous pulleys, so that the output shaft of the drive motor and the drive screw can rotate synchronously. When the displacement mechanism works, the lifting hydraulic cylinder is started. The lifting hydraulic cylinder can drive the lifting plate and the components connected to the lifting plate to slide up and down along the gantry. When the lifting plate moves downward to a certain distance, the specimen clamped by the test machine head can contact the test disk. When the lifting plate continues to move downward, the test machine head can press the test disk. When conducting a sliding friction and wear test on the specimen, when the specimen contacts the test disk, the drive motor is started. The drive motor drives the drive screw to rotate through the synchronous drive assembly. When the drive screw rotates, it can drive the test machine head connected and matched with it to move along the axis direction of the drive screw, so as to conduct a sliding friction and wear test.

[0014] According to the described friction and wear equipment, a through hole is provided on the working platform, and the test disk is rotatably arranged in the through hole. A rotating motor is arranged below the through hole. The rotating motor is connected to the working platform through a mounting plate, and the output end of the rotating motor is in transmission connection with the test disk.

[0015] When using this friction and wear equipment to test the specimen, the rotating motor is started. The rotating motor drives the test disk to rotate. When the specimen clamped by the test machine head abuts against the test disk, the rotating test disk can move relative to the specimen, so as to conduct a friction and wear test. A pressure sensor can be arranged at the connection between the test disk and the rotating motor, which is used to analyze the wear condition of the specimen under different pressures.

[0016] According to the described friction and wear equipment, a plurality of liquid flow through grooves are arranged at the bottom of the liquid collection tank. The plurality of liquid flow through grooves are all communicated with each other through connecting pipes. A liquid collection box is arranged on the mounting plate, and the connecting pipes are communicated with the liquid collection box.

[0017] When this friction and wear equipment conducts a friction and wear test on a specimen that needs lubrication, the lubricating liquid in the liquid collection tank flows into the connecting pipes through the liquid flow through grooves and enters the liquid collection box from the connecting pipes. A filtering device can be arranged in the liquid collection box, and the filtered lubricating liquid can be reused in the test process.

[0018] According to the described friction and wear equipment, a first driving groove is horizontally opened at the top of the test disk, and a second driving groove is vertically opened. Bidirectional screws are arranged in a staggered manner in both the first driving groove and the second driving groove. Rotating handles are arranged at one ends of the two bidirectional screws. First fixing blocks are slidably arranged at both ends of the corresponding bidirectional screws in the first chute. The two first fixing blocks are both connected and matched with the corresponding bidirectional screws. Second fixing blocks are slidably arranged at both ends of the corresponding bidirectional screws in the second chute. The two second fixing blocks are both connected and matched with the corresponding bidirectional screws.

[0019] Rotate the turning handles of the bidirectional screws in the first drive groove and the second drive groove respectively, which can drive the corresponding bidirectional screws to rotate. When the bidirectional screws rotate, the corresponding two first fixing blocks and two second fixing blocks can move closer to or away from each other.

[0020] According to the described friction and wear equipment, a friction block is arranged on the top of the test disc, and the friction block is clamped between two first fixing blocks and two second fixing blocks.

[0021] The friction block is usually a consumable part. When the friction and wear equipment conducts a test, the friction sample rubs on the friction block. During the friction process, the friction position will become thinner and show wear. The friction block is fixed by two first fixing blocks and second fixing blocks. When replacing the friction block, move the first fixing block and the second fixing block, and then the friction block can be removed from the test disc, and further the friction block can be replaced.

[0022] The beneficial effects of a friction and wear equipment in the present invention are as follows: 1. Through two spaced baffle plates and arc plates, the two baffle plates can block the lubricating liquid splashing in the front and back directions, and the two arc plates can block the lubricating liquid splashing to the left and right. Moreover, the lifting plate slides up and down between the two baffle plates, and the two arc plates can move along with the movement of the test machine head. Therefore, it can block the splashing of the lubricating liquid while not blocking the movement of the test machine head, and further can flexibly adjust the position of the test machine head and the protective cover.

[0023] 2. By setting the first fixing block and the second fixing block, when disassembling and assembling the fixed friction block, the corresponding bidirectional screw can be rotated to make the two first fixing blocks and the two second fixing blocks move away from or close to each other. When the two first fixing blocks and the two second fixing blocks move away from each other, the friction block can be taken out. When the two first fixing blocks and the two second fixing blocks move close to each other, the friction block can be fixed, so that it is convenient to replace the friction block.

[0024] The additional aspects and advantages of the present invention will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present invention. Description of the Drawings

[0025] The present invention will be further described below in conjunction with the drawings and embodiments; Figure 1 It is the front view of a friction and wear equipment.

[0026] Figure 2 It is the top view of a friction and wear equipment.

[0027] Figure 3 It is the partial three-dimensional view of a friction and wear equipment.

[0028] Figure 4It is a top view of a test disk of a friction and wear device.

[0029] Figure 5 It is a three-dimensional view of a lifting plate of a friction and wear device.

[0030] Figure 6 It is a cross-sectional view of a working platform of a friction and wear device.

[0031] Figure 7 It is a three-dimensional view of an arc plate of a friction and wear device.

[0032] Wherein: 1. Working platform; 11. Liquid collecting tank; 12. Through hole; 13. Mounting plate; 14. Connecting pipe; 15. Liquid collecting box; 2. Protection mechanism; 21. Liquid blocking plate; 211. Flow guiding plate; 22. Arc plate; 221. Slide bar; 222. Tension spring; 223. Plug board; 224. Ball; 3. Displacement mechanism; 31. Gantry; 32. Lifting hydraulic cylinder; 33. Driving motor; 34. Driving screw; 35. Synchronous driving assembly; 4. Testing machine head; 5. Test disk; 51. Rotating motor; 52. First driving groove; 53. Second driving groove; 54. Bi-directional screw; 55. First fixing block; 56. Second fixing block; 6. Lifting plate; 61. Chute; 62. Accommodating cavity; 7. Friction block. Detailed implementation manners

[0033] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description in the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention. However, it should not be construed as a limitation on the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that for the orientation description, such as the upper, lower, front, rear, left, right, etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0035] In the description of the present invention, "greater than", "less than", "exceeding", etc. are understood as not including the number itself, and "above", "below", "within", etc. are understood as including the number itself. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0037] Referring to Figures 1-7 , a friction and wear device of the present invention includes: a working platform 1, a protection mechanism 2, a displacement mechanism 3, a testing machine head 4 and a testing disc 5. The protection mechanism 2 and the displacement assembly are both located on the working platform 1. The displacement assembly includes a lifting plate 6. The testing machine head 4 is located above the working platform 1 and is slidably connected to the lifting plate 6. The testing disc 5 is located below the testing machine head 4 and is rotatably arranged on the top of the working platform 1; the protection mechanism 2 includes two liquid baffle plates 21 and two arc-shaped plates 22. The two liquid baffle plates 21 are both inserted into the working platform 1 at intervals and are located on the front and rear sides of the lifting plate 6. The two arc-shaped plates 22 are respectively arranged on the left and right sides of the testing machine head 4. The tops of the two arc-shaped plates 22 are both slidably connected to the lifting plate 6; sliding grooves 61 are respectively formed at the left and right ends of the lifting plate 6. Slide rods 221 slidably arranged in the sliding grooves 61 are respectively arranged at the tops of the two arc-shaped plates 22. A plurality of accommodating cavities 62 are respectively arranged on the opposite sides of the two sliding grooves 61 of the lifting plate 6. A plurality of tension springs 222 received in the accommodating cavities 62 are respectively arranged on the opposite sides of the two slide rods 221. One ends of the plurality of tension springs 222 far from the slide rods 221 are fixedly connected to the end wall surfaces of the corresponding accommodating cavities 62; arc-shaped inserts 223 are respectively slidably inserted at the bottoms of the two arc-shaped plates 22. The bottoms of the two inserts 223 are both in contact with the working platform 1; a liquid collecting groove 11 in a square shape is arranged on the top of the working platform 1 inside the two liquid baffle plates 21.

[0038] Specifically, the test head 4 is provided with an infusion hose, which can transport external lubricating liquid into the test head 4 and spray it out from the test head 4; when using the friction and wear equipment to test the sample to be tested, the sample is clamped at the bottom of the test head 4, and the displacement mechanism 3 is started. The displacement mechanism 3 transports the test head 4 and the sample to the top of the test disk 5 so that the sample abuts against the test disk 5. During the test, the test disk 5 rotates, and the rotating test disk 5 rubs against the sample, so that the friction and wear data of the sample can be obtained; when lubricating liquid is added during the test, the lubricating liquid is sprayed out of the test head 4 and reaches the sample. When rubbing the sample, the lubricating liquid on the sample splashes around, wherein a part of the splashed lubricating liquid falls on the liquid baffle 21, and another part The lubricating liquid falls on the arc plate 22 and the plug plate 223; when the lifting plate 6 drops to the lowest height, at this time, the distance from the top of the arc plate 22 to the bottom of the plug plate 223 is the same as the height of the test machine head 4 and the test disk 5. When the lifting plate 6 moves upward from the lowest height, the arc plate 22 moves upward as the lifting plate 6 moves upward, and the plug plate 223 extends out of the bottom of the arc plate 22, so that the total height of the arc plate 22 and the plug plate 223 becomes longer; a push rod is provided on the test machine head 4. When the test machine head 4 moves in the left and right directions, the push rod on the test machine head 4 will abut against the arc plate 22 and push the corresponding arc plate 22. When the arc plate 22 moves, the compression spring connected thereto will be stretched. When the test machine head 4 is reset, the stretched compression spring can reset the corresponding arc plate 22.

[0039] Optionally, a guide plate 211 is obliquely provided on one side opposite to the two liquid baffles 21 , and the bottom of the guide plate 211 is inserted into the liquid collecting tank 11 .

[0040] Optionally, a plurality of balls 224 are rollingly arranged at the bottom of the two inserting plates 223 , and the bottoms of the plurality of balls 224 are in contact with the working platform 1 .

[0041] Optionally, the displacement mechanism 3 includes a gantry 31, a lifting hydraulic cylinder 32, a driving motor 33 and a driving screw 34. The lifting plate 6 is slidingly connected to the gantry 31, the lifting hydraulic cylinder 32 is located at the top of the gantry 31, the output end of the lifting hydraulic cylinder 32 is fixedly connected to the top of the lifting plate 6, the driving motor 33 is located at the top of the lifting plate 6, the driving screw 34 is rotatably arranged at the bottom of the lifting plate 6, the output end of the driving motor 33 is transmission-connected to the driving screw 34 through a synchronous drive assembly 35, and the top of the test head 4 is threadedly connected to the driving screw 34.

[0042] Optionally, the working platform 1 is provided with a through hole 12, the test disk 5 is rotatably disposed in the through hole 12, a rotating motor 51 is disposed below the through hole 12, the rotating motor 51 is connected to the working platform 1 through a mounting plate 13, and the output end of the rotating motor 51 is transmission-connected to the test disk 5.

[0043] Optionally, a plurality of liquid flow through grooves are provided at the bottom of the liquid collecting tank 11, and the plurality of liquid flow through grooves are communicated with each other through a connecting pipe 14. A liquid collecting box 15 is provided on the mounting plate 13, and the connecting pipe 14 is communicated with the liquid collecting box 15.

[0044] Optionally, a first driving groove 52 is horizontally formed at the top of the test plate 5, and a second driving groove 53 is vertically formed therein. Two-way screws 54 are staggeredly arranged in both the first driving groove 52 and the second driving groove 53. Rotating handles are provided at one ends of the two two-way screws 54. First fixing blocks 55 are slidably arranged at both ends of the corresponding two-way screws 54 in the first sliding groove 61. The two first fixing blocks 55 are cooperatively connected with the corresponding two-way screws 54. Second fixing blocks 56 are slidably arranged at both ends of the corresponding two-way screws 54 in the second sliding groove 61. The two second fixing blocks 56 are cooperatively connected with the corresponding two-way screws 54.

[0045] Optionally, a friction block 7 is arranged at the top of the test plate 5, and the friction block 7 is clamped between the two first fixing blocks 55 and the two second fixing blocks 56.

[0046] Specifically, an infusion hose is provided on the testing machine head 4. The infusion hose can transport the external lubricating fluid into the testing machine head 4 and spray it out from the testing machine head 4. When using this friction and wear device to test the specimen to be tested, the specimen is clamped at the bottom of the testing machine head 4. The displacement mechanism 3 is started, and the displacement mechanism 3 transports the testing machine head 4 and the specimen above the test disk 5, so that the specimen abuts against the test disk 5. During the test, the test disk 5 rotates, and the rotating test disk 5 rubs the specimen, and thus the friction and wear data of the specimen can be obtained. When adding lubricating fluid during the test, the lubricating fluid is sprayed out from the testing machine head 4 and reaches the specimen. When rubbing the specimen, the lubricating fluid on the specimen splashes around. Among them, a part of the splashed lubricating fluid falls on the liquid baffle 21, and another part of the lubricating fluid falls on the arc-shaped plate 22 and the inserting plate 223. When the lifting plate 6 descends to the lowest height, at this time, the distance from the top of the arc-shaped plate 22 to the bottom of the inserting plate 223 is the same as the height between the testing machine head 4 and the test disk 5. When the lifting plate 6 moves upward from the lowest height, the arc-shaped plate 22 moves upward as the lifting plate 6 moves upward, and the inserting plate 223 extends out of the bottom of the arc-shaped plate 22, so that the total height of the arc-shaped plate 22 and the inserting plate 223 becomes longer. A push rod is provided on the testing machine head 4. When the testing machine head 4 moves in the left-right direction, the push rod on the testing machine head 4 will abut against the arc-shaped plate 22 and push the corresponding arc-shaped plate 22. When the arc-shaped plate 22 moves, the compression spring connected to it will be stretched. When the testing machine head 4 resets, the stretched compression spring can reset the corresponding arc-shaped plate 22. Through the two liquid baffle plates 21 and the arc-shaped plates 22 arranged at intervals, the two liquid baffle plates 21 can block the lubricating fluid splashing in the front-back direction, and the two arc-shaped plates 22 can block the lubricating fluid splashing in the left-right direction. And the lifting plate 6 slides up and down between the two liquid baffle plates 21, and the two arc-shaped plates 22 can move as the testing machine head 4 moves, so that while blocking the splashing of the lubricating fluid, it can also not block the movement of the testing machine head 4, and further can flexibly adjust the position of the testing machine head 4 and the protective cover. By providing the first fixing block 55 and the second fixing block 56, when disassembling and assembling the fixed friction block 7, the corresponding bidirectional screw 54 can be rotated, so that the two first fixing blocks 55 and the two second fixing blocks 56 move away from or close to each other. When the two first fixing blocks 55 and the two second fixing blocks 56 move away from each other, the friction block 7 can be taken out. When the two first fixing blocks 55 and the two second fixing blocks 56 move close to each other, the friction block 7 can be fixed, so that it is convenient to replace the friction block 7.

[0047] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the above-disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A friction and wear device, characterized in that, It includes: a working platform, a protection mechanism, a displacement mechanism, a test machine head and a test plate. The protection mechanism and the displacement assembly are both located on the working platform. The displacement assembly includes a lifting plate. The test machine head is located above the working platform and is slidably connected to the lifting plate. The test plate is located below the test machine head and is rotatably arranged on the top of the working platform. The protection mechanism includes two liquid baffles and two arc plates. The two liquid baffles are inserted on the working platform at intervals and are located on the front and rear sides of the lifting plate. The two arc plates are respectively arranged on the left and right sides of the test machine head. The tops of the two arc plates are slidably connected to the lifting plate. The lifting plate is provided with a slide groove at both ends, and a slide rod slidably arranged in the slide groove is arranged at the top of the two arc-shaped plates. The lifting plate is provided with a plurality of accommodating cavities on the opposite side of the two slide grooves, and a plurality of tension springs accommodated in the accommodating cavities are arranged on the opposite sides of the two slide rods, and the ends of the plurality of tension springs away from the slide rods are fixedly connected to the end wall of the corresponding accommodating cavity; The bottoms of the two arc-shaped plates are both slidably inserted with inserting plates with arc-shaped cross-sections, and the bottoms of the two inserting plates are both in contact with the working platform; A U-shaped liquid collecting trough is arranged on the top of the working platform at the inner sides of the two liquid baffle plates.

2. The friction and wear device according to claim 1, characterized in that, A guide plate is obliquely arranged on one side opposite to the two liquid baffle plates, and the bottom of the guide plate is inserted into the liquid collecting tank.

3. A friction and wear device according to claim 1, characterized in that, A plurality of balls are rollingly arranged at the bottom of the two plug plates, and the bottoms of the plurality of balls are in contact with the working platform.

4. A friction and wear device according to claim 1, characterized in that, The displacement mechanism includes a gantry, a lifting hydraulic cylinder, a driving motor and a driving screw. The lifting plate is slidably connected to the gantry, the lifting hydraulic cylinder is located at the top of the gantry, the output end of the lifting hydraulic cylinder is fixedly connected to the top of the lifting plate, the driving motor is located at the top of the lifting plate, the driving screw is rotatably arranged at the bottom of the lifting plate, the output end of the driving motor is transmission-connected to the driving screw through a synchronous driving assembly, and the top of the testing machine head is threadedly connected to the driving screw.

5. A friction and wear device according to claim 1, characterized in that, The working platform is provided with a through hole, the test disc is rotatably arranged in the through hole, a rotating motor is arranged below the through hole, the rotating motor is connected to the working platform through a mounting plate, and the output end of the rotating motor is transmission-connected to the test disc.

6. A friction and wear device according to claim 5, characterized in that, A plurality of liquid flow grooves are arranged at the bottom of the liquid collecting tank, and the plurality of liquid flow grooves are interconnected through connecting pipes. A liquid collecting box is arranged on the mounting plate, and the connecting pipe is connected to the liquid collecting box.

7. A friction and wear device according to claim 1, characterized in that, The top of the test disk is provided with a first drive groove in the horizontal direction and a second drive groove in the vertical direction. Bidirectional screws are staggered in the first drive groove and the second drive groove. A rotating handle is provided at one end of each of the two bidirectional screws. First fixing blocks are slidably provided at both ends of the corresponding bidirectional screws in the first slide groove. Both first fixing blocks are connected with the corresponding bidirectional screws. Second fixing blocks are slidably provided at both ends of the corresponding bidirectional screws in the second slide groove. Both second fixing blocks are connected with the corresponding bidirectional screws.

8. A friction and wear device according to claim 7, characterized in that, A friction block is arranged on the top of the test disc, and the friction block is sandwiched between two first fixing blocks and two second fixing blocks.

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