Friction-wear test device

Abstract

The invention provides a friction wear test device. The friction wear test device comprises a supporting assembly, a test fixing assembly, a test moving assembly and a driving assembly, the test fixing assembly comprises a guide rail and a guide shaft, the guide rail and the guide shaft are both connected with the supporting assembly, and the outer surface of the guide rail and the outer surface of the guide shaft are both provided with materials to be tested; the test moving assembly is located on the side, facing the guide shaft, of the guide rail, the guide shaft is sleeved with the test moving assembly, the test moving assembly makes contact with the guide rail and the guide shaft, and the contact portions of the test moving assembly and the guide rail and the contact portions of the test moving assembly and the guide shaft are provided with materials to be tested; the driving assembly is located on the supporting assembly and connected with the supporting assembly, and the driving assembly is connected with the test moving assembly. The detection efficiency can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of mechanical equipment testing, and in particular relates to a friction and wear testing device. Background Art

[0002] During the operation of mechanical equipment, there will be friction and wear between any two objects that are in contact with each other and in relative motion, such as the wear between the ball bearing and the inner and outer steel rings, the wear between the shaft and the bearing shell, etc. Friction and wear are the main factors causing the failure of various mechanical equipment. In particular, the wear of key components will harm the life, work efficiency and reliability of the equipment, and even cause serious safety accidents and economic losses. For this reason, before the equipment is designed and used, it is necessary to simulate the working environment of the equipment to conduct friction and wear tests in order to analyze and compare the wear resistance and corrosion resistance of the materials used in the equipment. For example, when conducting friction and wear tests on mechanical equipment working in a marine environment, it is necessary to simulate the working environment of seawater to conduct friction and wear tests on the equipment materials.

[0003] In the related art, when different materials are subjected to friction and wear tests under seawater conditions, it is necessary to first place the friction and wear test device in water, and then use the friction and wear test to detect the wear condition of the kinematic pair formed by the first component and the second component. Among them, the friction and wear test device includes a support assembly and a drive assembly. The support assembly is used to support the first component. The second component is in contact with the first component and is connected to the drive assembly. The drive assembly is used to drive the second component to move relative to the first component. The first component and the second component are workpieces whose friction and wear are to be verified. In this way, the wear condition of the material used for the workpiece can be determined by observing and detecting the wear condition of the first component and the second component and the corresponding parameters (such as thickness, mass, etc.), thereby ensuring the friction and wear of the equipment.

[0004] However, the above friction and wear testing devices can only test one type of friction pair during the test, and the testing efficiency is low. Summary of the invention

[0005] The embodiment of the present disclosure provides a friction and wear test device, which can improve the detection efficiency. The technical solution is as follows:

[0006] An embodiment of the present disclosure provides a friction and wear testing device, which includes a supporting assembly, a test fixing assembly, a test moving assembly and a driving assembly; the test fixing assembly includes a guide rail and a guide shaft, the length direction of the guide rail is the same as the length direction of the guide shaft, and the guide rail and the guide shaft are spaced apart along a length direction perpendicular to the guide rail, the guide rail and the guide shaft are both connected to the supporting assembly, and the outer surfaces of the guide rail and the guide shaft are both provided with materials to be tested; the test moving assembly is located on the side of the guide rail facing the guide shaft, the test moving assembly is sleeved outside the guide shaft, the test moving assembly is in contact with the guide rail and the guide shaft respectively, and the contact parts of the test moving assembly with the guide rail and the guide shaft are both provided with materials to be tested; the driving assembly is connected to the test moving assembly, and is used to drive the test moving assembly to move relative to the guide rail and the guide shaft along the length direction of the guide shaft.

[0007] In another implementation of the present disclosure, the test moving assembly includes a sleeve and a seat body, wherein the seat body is located at the outer periphery of the sleeve and is connected to the sleeve; the sleeve is sleeved outside the guide shaft and is in contact with the guide shaft, the sleeve is connected to the support assembly, and the seat body is slidably connected to the guide rail.

[0008] In another embodiment of the present disclosure, the inner wall of the sleeve has a plurality of first ridges and a plurality of first grooves arranged at intervals in the circumferential direction, and the outer surface of the first ridge and the inner surface of the first groove are both provided with materials to be tested; any one of the first ridges is located between two adjacent first grooves, and the length directions of the first ridge and the first groove are both the axial direction of the sleeve; the guide shaft has a plurality of second ridges and second grooves arranged at intervals along its circumference, any one of the second ridges is located between two adjacent second grooves, and the length directions of the second ridge and the second groove are both the length direction of the guide shaft, and the outer surface of the second ridge and the inner surface of the second groove are both provided with materials to be tested; each of the second ridges is located in one of the first grooves and contacts with the groove wall of the first groove, and each of the first ridges is located in one of the second grooves and contacts with the groove wall of the second groove.

[0009] In another implementation of the present disclosure, the support assembly includes two support arms and a guide rod, both ends of the guide rod are respectively connected to the two support arms, the guide rod and the guide rail are respectively located on opposite sides of the guide shaft, and the length direction of the guide rod is the same as the length direction of the guide rail; the side of the sleeve away from the guide rail is sleeved outside the guide rod and in contact with the guide rod, and the sleeve can move relative to the guide rod.

[0010] In another embodiment of the present disclosure, the support assembly further includes a base and a bearing seat; the base is respectively connected to the guide rail and the side of the support arm away from the guide rod; the bearing seat is located on the base and connected to the base, the bearing seat is connected to the first end of the guide shaft, and the second end of the guide shaft is located in the bushing.

[0011] In yet another implementation of the present disclosure, the friction and wear testing device further comprises a counterweight assembly, wherein the counterweight assembly is connected to the test movable assembly, and the counterweight assembly is used to adjust the gap between the test movable assembly and the test fixed assembly.

[0012] In another implementation of the present disclosure, the counterweight assembly includes a counterweight sleeve and a counterweight block, wherein the counterweight sleeve is located on one side of the test moving assembly and is spaced apart from the guide shaft; the counterweight block is located outside the counterweight sleeve and is detachably connected to the counterweight sleeve.

[0013] In another embodiment of the present disclosure, a first lubrication channel is provided in the guide rail, and a second lubrication channel is provided in the test movable assembly, the first lubrication channel is connected to the second lubrication channel, the first lubrication channel is used to provide grease to the contact portion between the guide rail and the test movable assembly, and the second lubrication channel is used to provide grease to the contact portion between the guide shaft and the test movable assembly; the friction and wear testing device also includes a lubrication assembly, the lubrication assembly is connected to the first lubrication channel, and the lubrication assembly is used to inject grease into the first lubrication channel.

[0014] In another implementation of the present disclosure, the driving assembly includes two driving cylinders, which are respectively located on opposite sides of the guide shaft, the extension and retraction direction of the driving cylinders is the length direction of the guide shaft, one end of each of the two driving cylinders is connected to the supporting assembly, and the other end of the driving cylinder is connected to the test moving assembly.

[0015] In another implementation of the present disclosure, the friction and wear testing device also includes a water tank filled with seawater; the supporting assembly, the test fixing assembly, the test moving assembly and the driving assembly are all located in the water tank, and the test fixing assembly and the test moving assembly are immersed in the seawater.

[0016] In another implementation of the present disclosure, the friction and wear testing device also includes a water tank filled with seawater; the supporting assembly, the test fixing assembly, the test moving assembly and the driving assembly are all located in the water tank, and the test fixing assembly and the test moving assembly are submerged in the seawater.

[0017] The technical solution provided by the embodiments of the present disclosure brings the following beneficial effects:

[0018] Since the test fixed component includes a guide rail and a guide shaft, and the outer surfaces of the guide rail and the guide shaft are provided with materials to be tested, and the length direction of the guide rail is the same as the length direction of the guide shaft, and the test movable component is sleeved outside the guide shaft, the test movable component is in contact with the guide rail and the guide shaft respectively, and the driving component is connected to the test movable component to drive the test movable component to move relative to the guide rail and the guide shaft along the length direction of the guide shaft. In this way, under the drive of the driving component, the test movable component can form a moving friction pair to be tested with the guide rail and the guide shaft respectively, so that the two friction pairs can be tested at the same time.

[0019] Moreover, since the outer surfaces of the guide rail and the guide shaft are provided with the material to be tested, and the contact parts of the test moving assembly with the guide rail and the guide shaft are provided with the material to be tested, during the test, the material to be tested can be sprayed on the guide rail, the guide shaft and the test moving assembly respectively to test the target material. Moreover, other test materials can be sprayed again after each test, thereby realizing the test of multiple materials and reducing the test cost.

[0020] It can be seen that the friction and wear testing device provided in the embodiment of the present disclosure can not only detect two friction pairs at the same time, but also perform multiple tests to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a friction and wear testing device provided in an embodiment of the present disclosure;

[0023] Figure 2 for Figure 1 Schematic diagram of the mobile test component and the fixed test component;

[0024] Figure 3 It is a schematic diagram of the structure of the external components of the overall structure of the shaft sleeve and the seat body;

[0025] Figure 4 is a schematic diagram of the structure of the internal components of the sleeve;

[0026] Figure 5 It is a structural schematic diagram of the counterweight sleeve;

[0027] Figure 6 for Figure 1 Schematic diagram of the structure of the middle guide rail and the test moving assembly.

[0028] The symbols in the figure mean the following:

[0029] 1. Support assembly; 11. Support arm; 12. Guide rod; 13. Base; 14. Bearing seat;

[0030] 2. Test fixing assembly; 21. Guide rail; 210. First lubrication channel; 2100. Oil outlet; 211. Side wall; 212. Top wall; 213. Baffle; 22. Guide shaft; 2201. Second convex ridge; 2202. Second groove;

[0031] 3. Test moving assembly; 31. Bushing; 3101. First ridge; 3102. First groove; 311. Outer sleeve; 312. Internal spline sleeve; 313. First flange plate; 314. Ear plate; 315. External connecting plate; 3150. Connecting hole; 32. Seat; 320. Guide groove; 321. First slider; 322. Second slider; 300. Second lubrication channel;

[0032] 4. driving assembly; 41. driving cylinder; 42. synchronous motor;

[0033] 5. Counterweight assembly; 51. Counterweight sleeve; 510. Mounting plane; 511. Second flange plate; 52. Counterweight block;

[0034] 6. Lubrication assembly; 61. Grease injection unit; 62. Connecting pipeline;

[0035] 7. Water tank. DETAILED DESCRIPTION

[0036] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0037] The disclosed embodiment provides a friction and wear testing device for performing friction and wear tests on selected materials of a workpiece.

[0038] Figure 1 A schematic diagram of a friction and wear testing device provided in an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the friction and wear testing device includes a supporting assembly 1 , a test fixing assembly 2 , a test moving assembly 3 and a driving assembly 4 .

[0039] The test fixing assembly 2 includes a guide rail 21 and a guide shaft 22, the length direction of the guide rail 21 is the same as the length direction of the guide shaft 22, and the guide rail 21 and the guide shaft 22 are spaced apart along a length direction perpendicular to the guide rail 21, and the guide rail 21 and the guide shaft 22 are both connected to the support assembly 1, wherein the outer surfaces of the guide rail 21 and the guide shaft 22 are sprayed with the material to be tested.

[0040] The test movable component 3 is located on the side of the guide rail 21 facing the guide shaft 22, and the test movable component 3 is sleeved outside the guide shaft 22. The test movable component 3 contacts the guide rail 21 and the guide shaft 22 respectively, and the contact parts of the test movable component 3 with the guide rail 21 and the guide shaft 22 are sprayed with the material to be tested.

[0041] The driving assembly 4 is connected to the test moving assembly 3 and is used to drive the test moving assembly 3 to move relative to the guide rail 21 and the guide shaft 22 along the length direction of the guide shaft 22 .

[0042] When the friction and wear testing device provided by the embodiment of the present disclosure is used to conduct a friction and wear test on the material selected for the workpiece, since the testing device includes the support assembly 1, the support assembly 1 can be used to support other components to provide a mounting basis for them.

[0043] Since the test fixed assembly 2 includes the guide rail 21 and the guide shaft 22, and the outer surfaces of the guide rail 21 and the guide shaft 22 are provided with the material to be tested, and the length direction of the guide rail 21 is the same as the length direction of the guide shaft 22. The test moving assembly 3 is sleeved outside the guide shaft 22, and the test moving assembly 3 is in contact with the guide rail 21 and the guide shaft 22 respectively, and the driving assembly 4 is connected to the test moving assembly 3, and is used to drive the test moving assembly 3 to move relative to the guide rail 21 and the guide shaft 22 along the length direction of the guide shaft 22. In this way, under the drive of the driving assembly 4, the test moving assembly 3 can form a moving friction pair to be tested with the guide rail 21 and the guide shaft 22 respectively, so that the two friction pairs can be tested simultaneously.

[0044] Moreover, since the outer surfaces of the guide rail 21 and the guide shaft 22 are provided with the material to be tested, and the contact parts of the test moving component 3 with the guide rail 21 and the guide shaft 22 are provided with the material to be tested, during the test, the material to be tested can be sprayed on the guide rail 21, the guide shaft 22 and the test moving component 3 respectively to test the target material. Moreover, after each test, other test materials can be sprayed again, thereby realizing the test of multiple materials and reducing the test cost.

[0045] It can be seen that the friction and wear testing device provided in the embodiment of the present disclosure can not only detect two friction pairs at the same time, but also perform multiple tests to reduce costs.

[0046] Continue to see Figure 1The support assembly 1 includes two support arms 11 and a guide rod 12. The guide rod 12 is located between the two support arms 11, and both ends of the guide rod 12 are respectively connected to the two support arms 11. The guide rod 12 and the guide rail 21 are respectively located on opposite sides of the axial direction of the guide shaft 22, and the length direction of the guide rod 12 is the same as the length direction of the guide rail 21.

[0047] The side of the test moving assembly 3 away from the guide rail 21 is sleeved outside the guide rod 12 and contacts the guide rod 12 . The test moving assembly 3 can move relative to the guide rod 12 .

[0048] In the above implementation, the support arm 11 is used to support the guide rod 12 , and the guide rod 12 is used to guide the movement of the test moving assembly 3 and support the test moving assembly 3 at the same time.

[0049] Optionally, the support assembly 1 further includes a base 13 and a bearing seat 14 , the base 13 and the guide shaft 22 are respectively located on opposite sides of the guide rail 21 , and the base 13 is respectively connected to the guide rail 21 and a side of the support arm 11 away from the guide rod 12 .

[0050] The bearing seat 14 is located on the base 13 and connected to the base 13 . The bearing seat 14 is connected to a first end of the guide shaft 22 . The second end of the guide shaft 22 is located in the shaft sleeve 31 .

[0051] In the above implementation, the base 13 is used to provide a mounting base for the guide rail 21. The bearing seat 14 is used to provide a mounting base for the guide shaft 22, so that one end of the guide shaft 22 can be fixed in the support assembly 1.

[0052] In the disclosed embodiment, the base 13 is a plate-like structure. The support arm 11 is a rod structure. In order to improve the structural strength of the support arm 11, at least one triangular rib may be provided on the periphery of the support arm 11. The rib is connected to the outer wall of the support arm 11. At the same time, in order to improve the connection stability between the support arm 11 and the base 13, a planar connecting plate may be provided at the bottom of the support arm 11. The planar connecting plate is welded to the periphery of the support arm 11 and is connected to the base 13 by fasteners such as bolts. The bearing seat 14 is connected to the base 13 by fasteners such as bolts.

[0053] Figure 2 for Figure 1 Schematic diagram of the mobile test component and the fixed test component, combined with Figure 2 The test moving assembly 3 includes a shaft sleeve 31 and a seat body 32 . The seat body 32 is located at the outer periphery of the shaft sleeve 31 and is connected to the shaft sleeve 31 .

[0054] The shaft sleeve 31 is sleeved outside the guide shaft 22 and contacts the guide shaft 22 . The shaft sleeve 31 is connected to the support assembly 1 . The seat body 32 has a guide groove 320 . The guide rail 21 is located in the guide groove 320 , and the groove wall of the guide groove 320 contacts the guide rail 21 .

[0055] In the above implementation, the sleeve 31 is used to be sleeved outside the guide shaft 22 so that the guide shaft 22 contacts to form a friction motion pair. The seat body 32 is used to cooperate with the guide rail 21 to form another friction motion pair.

[0056] In the disclosed embodiment, the cross section of the guide rail 21 is an inverted U-shaped structure. The guide rail 21 includes two side walls 211 and a top wall 212. The two side walls 211 are arranged opposite to each other and are respectively located on opposite sides of the top wall 212. One side edge of each of the two side walls 211 is connected to one side edge of the top wall 212, and the other side edge of each side wall 211 is connected to the base 13. The guide groove 320 is also an inverted U-shaped structure. The groove walls of the guide groove 320 are in contact with each side wall 211 and the top wall 212 respectively.

[0057] Exemplarily, the seat body 32 may be any structure, such as a block structure, a plate structure, etc. As long as a guide groove 320 that cooperates with the guide rail 21 can be formed so that the seat body 32 can slide relative to the guide rail 21, the present disclosure does not limit this.

[0058] Figure 3 The schematic diagram of the structure of the external components of the overall structure of the sleeve and the seat body is combined with Figure 3 In the disclosed embodiment, the seat body 32 includes a first slider 321 and a second slider 322 of the same structure. The first slider 321 and the second slider 322 are arranged at intervals along the length direction of the guide rail 21, and one side of the first slider 321 and the second slider 322 are connected to the shaft sleeve 31, and the other side defines an inverted U-shaped guide groove 320 inside. In this way, the contact area between the seat body 32 and the guide rail 21 can be reduced by the first slider 321 and the second slider 322 arranged at intervals, so as to reduce the sliding resistance between the seat body 32 and the guide rail 21, so that the seat body 32 will not get stuck. In other words, by spacing the first slider 321 and the second slider 322, the contact length and contact area between the seat body 32 and the guide rail 21 can be reduced, thereby reducing the sliding resistance between the seat body 32 and the guide rail 21 and preventing the seat body 32 from getting stuck.

[0059] The test fixture assembly 2 further includes two baffles 213, which are respectively arranged at both ends of the top wall 212 of the guide rail 21 along the length direction of the guide rail 21 and are both connected to the top wall 212. The baffles 213 are used to limit the movement of the sleeve 31 to prevent the seat body 32 from leaving the guide rail 21.

[0060] Exemplarily, the baffle 213 is an L-shaped plate, and the bottom plate of the baffle 213 is connected to the top wall 212 by fasteners such as screws. The side plates of the baffle 213 are used to limit the shaft sleeve 31. And the side plates of the baffle 213 are vertically connected to the bottom plate.

[0061] Figure 4 The schematic diagram of the internal components of the sleeve is shown in Figure 2. Figure 4 Optionally, the inner wall of the sleeve 31 has a plurality of first ridges 3101 arranged at intervals in the circumferential direction and a plurality of first grooves 3102 arranged at intervals in the circumferential direction. The outer surface of the first ridge 3101 and the inner surface of the first groove 3102 are both provided with the material to be tested. Any first ridge 3101 is located between two adjacent first grooves 3102, and the length directions of the first ridge 3101 and the first groove 3102 are both the axial direction of the sleeve 31.

[0062] Combination Figure 2 The guide shaft 22 has a plurality of second ridges 2201 and second grooves 2202 arranged at intervals along its circumference, any second ridge 2201 is located between two adjacent second grooves 2202, and the length directions of the second ridges 2201 and the second grooves 2202 are both the length directions of the guide shaft 22. The outer surface of the second ridge 2201 and the inner surface of the second groove 2202 are both provided with materials to be tested.

[0063] Each of the second ridges 2201 is located in one of the first grooves 3102 and contacts the groove wall of the first groove 3102 . Each of the first ridges 3101 is located in one of the second grooves 2202 and contacts the groove wall of the second groove 2202 .

[0064] In the above implementation, the shaft sleeve 31 and the guide shaft 22 are set to the above structure, and the first groove 3102 cooperates with the second ridge 2201, and the second groove 2202 cooperates with the first ridge 3101, so that the shaft sleeve 31 is guided when moving relative to the guide shaft 22 to prevent the two from offsetting, and the contact area between the shaft sleeve 31 and the guide shaft 22 can also be increased to improve the detection accuracy. Moreover, the above setting will not affect the relative movement of the shaft sleeve 31 and the guide shaft 22. In addition, when the workpiece has a spline tooth motion friction pair, the above structure can also truly simulate the working environment of the actual workpiece to improve the detection accuracy.

[0065] Exemplarily, the plurality of second ridges 2201 correspond one-to-one to the plurality of first grooves 3102, and each second ridge 2201 is located in the corresponding first groove 3102 and contacts the groove wall of the first groove 3102. The plurality of first ridges 3101 correspond one-to-one to the plurality of second grooves 2202, and each first ridge 3101 is located in the corresponding second groove 2202 and contacts the groove wall of the second groove 2202. That is, the inner wall of the sleeve 31 and the outer wall of the guide shaft 22 are both provided with a spline tooth structure.

[0066] In the disclosed embodiment, in order to facilitate the setting of the spline tooth structure of the shaft sleeve 31, the shaft sleeve 31 includes an outer sleeve 311 and an inner spline tooth sleeve 312. The outer sleeve 311 is sleeved on the outer spline tooth sleeve 312 at low temperature, and the outer sleeve 311 and the inner spline tooth sleeve 312 are interference fit. The first ridge 3101 and the first groove 3102 are both located in the inner wall of the inner spline tooth sleeve 312.

[0067] In this embodiment, in order to facilitate processing, the outer sleeve 311 and the seat body 32 are an integrated structure.

[0068] See again Figure 1 Optionally, the driving assembly 4 includes two driving cylinders 41, which are respectively located on opposite sides of the guide shaft 22, and the extension direction of the driving cylinder 41 is the length direction of the guide shaft 22. One end of each of the two driving cylinders 41 is connected to the supporting assembly 1, and the other end of the driving cylinder 41 is connected to the test moving assembly 3.

[0069] In the above implementation, the two driving cylinders 41 are used to synchronously drive the shaft sleeve 31 to move, so that the shaft sleeve 31 can move smoothly along the guide shaft 22 .

[0070] Combination Figure 3 In order to facilitate the connection between the sleeve 31 and the two driving cylinders 41, two ear plates 314 arranged opposite to each other are provided on the outer periphery of the sleeve 31, and the two ear plates 314 are respectively located on opposite sides of the sleeve 31. Each ear plate 314 is connected to the piston rod of a driving cylinder 41 by a spherical hinge. In this way, the driving cylinder 41 will not get stuck during operation. At the same time, the front end of the piston rod of the driving cylinder 41 is connected to the ear plate 314 by a square connecting plate. When the piston rod of the driving cylinder 41 is extended and retracted, it can push and pull back the sleeve 31 to move, thereby causing friction and wear between the sleeve 31 and the guide shaft 22, and between the seat body 32 and the guide rail 21.

[0071] In order to facilitate the connection between the sleeve 31 and the support assembly 1, two outer connecting plates 315 are arranged at intervals and opposite to each other on the outer periphery of the sleeve 31. The two outer connecting plates 315 are spaced apart along the axis direction of the sleeve 31 and are both located between the two ear plates 314. Each outer connecting plate 315 has a connecting hole 3150, and the guide rod 12 passes through the two connecting holes 3150.

[0072] Combination Figure 1 In order to make the two drive cylinders 41 move synchronously, the drive assembly 4 also includes a synchronous motor 42, one end of which is respectively connected to the rod chambers of the two drive cylinders 41. The other end of the synchronous motor 42 is connected to the pump body. In this way, when in working state, the pressure oil output by the pump body can enter the rod chambers of the two drive cylinders 41 after passing through the synchronous motor 42, and push the piston rods of the two drive cylinders 41 to extend synchronously.

[0073] Continue to combine Figure 1 Optionally, the friction and wear testing device further includes a counterweight assembly 5 , which is connected to the test moving assembly 3 , and is used to adjust the gap between the test moving assembly 3 and the test fixed assembly 2 .

[0074] In the above implementation, the counterweight assembly 5 is connected to the test moving assembly 3. During the test, the contact between the test moving assembly 3 and the test fixed assembly 2 can be adjusted by changing the weight of the counterweight assembly 5 to change the position of the center of gravity of the whole counterweight assembly 5.

[0075] Optionally, the weight assembly 5 includes a weight sleeve 51 and a weight block 52. The weight sleeve 51 is located on one side of the sleeve 31 and is spaced from the guide shaft 22. The weight block 52 is located outside the weight sleeve 51 and is detachably connected to the weight sleeve 51.

[0076] In the above implementation, the weight sleeve 51 is used to connect with the test moving assembly 3 and provide a position for the installation of the weight block 52. The weight block 52 is used to connect with the weight sleeve 51, so that the entire weight of the weight assembly 5 can be flexibly adjusted by replacing the weight blocks 52 of different masses, thereby adjusting the contact between the test moving assembly 3 and the test fixed assembly 2.

[0077] For example, different weights of counterweight blocks 52 can be installed at different positions of the counterweight sleeve 51. When the counterweight block 52 is located on the left side of the axial direction of the counterweight sleeve 51 (for example, Figure 5 The center of gravity of the entire counterweight assembly 5 is biased to the left side of the axis, which causes the sleeve 31 connected to the counterweight assembly 5 to generate a counterclockwise torque. The gap between the left side of the test moving assembly 3 and the test fixed assembly 2 is smaller, and the contact is more complicated. In this way, the corresponding working condition can be simulated by adding counterweight blocks 52 on the left and right sides in combination with the working condition, so as to detect the contact wear under the working condition.

[0078] Figure 5 It is a structural diagram of the weight sleeve, combined with Figure 5 In the disclosed embodiment, the counterweight sleeve 51 is a hollow cylindrical structure, and along the circumference of the counterweight sleeve 51, the counterweight sleeve 51 has a plurality of mounting planes 510 spaced apart along the circumference of the counterweight sleeve 51. A plurality of bolt holes are provided on the mounting plane 510. The counterweight block 52 is mounted on the mounting plane 510 by fasteners such as bolts. The counterweight sleeve 51 is coaxially arranged with the shaft sleeve 31, and one end of the counterweight sleeve 51 is connected to one end of the shaft sleeve 31 by fasteners such as a plurality of bolts.

[0079] In order to facilitate the connection between the weight sleeve 51 and the test moving assembly 3, a second flange plate 511 is provided at one end of the weight sleeve 51 facing the shaft sleeve 31. A first flange plate 313 is provided at the end of the internal spline gear sleeve 312, and the first flange plate 313 is connected to the second flange plate 511 by fasteners such as bolts.

[0080] Figure 6 for Figure 1 Schematic diagram of the structure of the middle guide rail and the test moving assembly, combined with Figure 6 Optionally, a first lubrication channel 210 is provided in the guide rail 21, and a second lubrication channel 300 is provided in the test movable assembly 3. The first lubrication channel 210 is connected to the second lubrication channel 300. The first lubrication channel 210 is used to provide grease to the contact portion between the guide rail 21 and the test movable assembly 3, and the second lubrication channel 300 is used to provide grease to the contact portion between the guide shaft 22 and the test movable assembly 3.

[0081] See also Figure 1 The friction and wear testing device also includes a lubrication component 6 , which is connected to the first lubrication channel 210 , and is used to inject grease into the first lubrication channel 210 .

[0082] In the above implementation, the lubrication assembly 6 is used to inject grease into the two friction pairs during the test to reduce the friction of the friction pairs.

[0083] In the disclosed embodiment, the lubrication assembly 6 includes a grease injection unit 61 and a connecting pipeline 62. The outlet of the grease injection unit 61 is connected to one end of the connecting pipeline 62, and the other end of the connecting pipeline 62 is connected to the first lubrication channel 210. The grease injection unit 61 can be a grease injector equipped with a pump body. The connecting pipeline 62 is any pipeline capable of conveying lubricating oil, such as a rubber high-pressure hose, a plastic high-pressure hard pipe, etc.

[0084] Optionally, the first lubrication channel 210 extends along the length direction of the guide rail 21, wherein one end of the first lubrication channel 210 is connected to the connecting pipeline 62. The outer surface of the guide rail 21 has a plurality of oil outlets 2100 arranged at intervals along its length direction, and the oil outlets 2100 are connected to the other end of the first lubrication channel 210.

[0085] The second lubricating channel 300 is arranged along the radial direction of the shaft sleeve 31, and one end of the second lubricating channel 300 is connected to one of the oil outlets 2100, and the other end of the second lubricating channel 300 extends to the inner wall of the shaft sleeve 31. In this way, the lubricating grease can enter the first lubricating channel 210 through the connecting pipeline 62 under the drive of the grease injection unit 61, and then flow to the outer surface of the guide rail 21 through the oil outlet 2100 to enter the friction motion pair between the guide rail 21 and the seat body 32. At the same time, it can also flow to the inner wall of the shaft sleeve 31 through the oil outlet to enter the friction motion pair between the shaft sleeve 31 and the guide shaft 22.

[0086] In the disclosed embodiment, there are four oil outlets 2100 and two second lubrication channels 300, wherein the two oil outlets 2100 are respectively connected to the two second lubrication channels 300.

[0087] Optionally, the friction and wear test device further comprises a water tank 7, which is filled with seawater. The support assembly 1, the test fixing assembly 2, the test moving assembly 3 and the drive assembly 4 are all located in the water tank 7, and the test fixing assembly 2 and the test moving assembly 3 are submerged in the seawater.

[0088] In the above implementation, the water tank 7 is used to contain seawater so that the test material can be placed in seawater conditions during the test process, thereby simulating seawater conditions to perform friction and wear tests on the material.

[0089] In the disclosed embodiment, the water tank 7 may be any box structure, such as a square structure, a cylindrical structure, etc.

[0090] The following is a brief description of the working process of the friction and wear testing device provided by the embodiment of the present disclosure:

[0091] First, install and fix the friction and wear test device as required, and debug it so that the entire test device runs smoothly without obvious abnormal noise and jamming, and record the working parameters. After debugging, inject homemade seawater into the water tank 7. The water tank 7 must not leak, and the two moving friction pairs must be completely immersed in the seawater.

[0092] Adjust the two drive cylinders 41 to be in the fully extended state, ( Figure 1), and then the lubrication assembly 6 is turned on to inject grease into the two friction motion pairs. Next, the drive cylinder 41 is controlled to extend and retract, so that the test moving assembly 3 moves relative to the guide rail 21 and the guide shaft 22. Finally, the wear surface of the friction pair is detected, observed and analyzed, and the test results under the working condition parameters are obtained.

[0093] The above description is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A friction and wear testing device, characterized in that: The friction and wear testing device comprises a supporting assembly (1), a testing fixing assembly (2), a testing moving assembly (3) and a driving assembly (4); The test fixing assembly (2) comprises a guide rail (21) and a guide shaft (22); the length direction of the guide rail (21) is the same as the length direction of the guide shaft (22); the guide rail (21) and the guide shaft (22) are spaced apart along a length direction perpendicular to the guide rail (21); the guide rail (21) and the guide shaft (22) are both connected to the support assembly (1); and the outer surfaces of the guide rail (21) and the guide shaft (22) are both provided with materials to be tested; The test movable component (3) is located on a side of the guide rail (21) facing the guide shaft (22), the test movable component (3) is sleeved outside the guide shaft (22), the test movable component (3) is in contact with the guide rail (21) and the guide shaft (22) respectively, and the contact parts of the test movable component (3) with the guide rail (21) and the guide shaft (22) are all provided with materials to be tested; The driving assembly (4) is connected to the test moving assembly (3) and is used to drive the test moving assembly (3) to move relative to the guide rail (21) and the guide shaft (22) along the length direction of the guide shaft (22).

2. The friction and wear testing device according to claim 1, characterized in that: The test moving assembly (3) comprises a shaft sleeve (31) and a seat body (32), wherein the seat body (32) is located on the outer periphery of the shaft sleeve (31) and is connected to the shaft sleeve (31); The shaft sleeve (31) is sleeved outside the guide shaft (22) and is in contact with the guide shaft (22); the shaft sleeve (31) is connected to the support assembly (1); and the seat body (32) is slidably connected to the guide rail (21).

3. The friction and wear testing device according to claim 2, characterized in that: The inner wall of the shaft sleeve (31) has a plurality of first ridges (3101) arranged at intervals in the circumferential direction and a plurality of first grooves (3102) arranged at intervals in the circumferential direction, and the outer surface of the first ridges (3101) and the inner surface of the first grooves (3102) are both provided with materials to be tested; Any one of the first ridges (3101) is located between two adjacent first grooves (3102), and the length directions of the first ridge (3101) and the first groove (3102) are both the axial direction of the sleeve (31); The guide shaft (22) has a plurality of second ridges (2201) and second grooves (2202) arranged at intervals along its circumference, any one of the second ridges (2201) is located between two adjacent second grooves (2202), the length directions of the second ridges (2201) and the second grooves (2202) are both the length directions of the guide shaft (22), and the outer surface of the second ridge (2201) and the inner surface of the second groove (2202) are both provided with a material to be tested; Each of the second ridges (2201) is located in one of the first grooves (3102) and contacts the groove wall of the first groove (3102). Each of the first ridges (3101) is located in one of the second grooves (2202) and contacts the groove wall of the second groove (2202).

4. The friction and wear testing device according to claim 2, characterized in that: The support assembly (1) comprises two support arms (11) and a guide rod (12), the two ends of the guide rod (12) are respectively connected to the two support arms (11), the guide rod (12) and the guide rail (21) are respectively located on opposite sides of the guide shaft (22), and the length direction of the guide rod (12) is the same as the length direction of the guide rail (21); The side of the shaft sleeve (31) away from the guide rail (21) is sleeved outside the guide rod (12) and is in contact with the guide rod (12), and the shaft sleeve (31) can move relative to the guide rod (12).

5. The friction and wear testing device according to claim 4, characterized in that: The support assembly (1) further comprises a base (13) and a bearing seat (14); The base (13) is respectively connected to the guide rail (21) and a side of the support arm (11) away from the guide rod (12); The bearing seat (14) is located on the base (13) and connected to the base (13); the bearing seat (14) is connected to the first end of the guide shaft (22); and the second end of the guide shaft (22) is located in the shaft sleeve (31).

6. The friction and wear testing device according to any one of claims 1 to 5, characterized in that: The friction and wear testing device further comprises a counterweight assembly (5), wherein the counterweight assembly (5) is connected to the test movable assembly (3), and the counterweight assembly (5) is used to adjust the gap between the test movable assembly (3) and the test fixed assembly (2).

7. The friction and wear testing device according to claim 6, characterized in that: The counterweight assembly (5) comprises a counterweight sleeve (51) and a counterweight block (52), wherein the counterweight sleeve (51) is located on one side of the test moving assembly (3) and is spaced apart from the guide shaft (22); The counterweight block (52) is located outside the counterweight sleeve (51) and is detachably connected to the counterweight sleeve (51).

8. The friction and wear testing device according to any one of claims 1 to 5 and 7, characterized in that: The guide rail (21) has a first lubrication channel (210), and the test movable assembly (3) has a second lubrication channel (300), the first lubrication channel (210) is connected to the second lubrication channel (300), the first lubrication channel (210) is used to provide lubrication grease to the contact portion between the guide rail (21) and the test movable assembly (3), and the second lubrication channel (300) is used to provide lubrication grease to the contact portion between the guide shaft (22) and the test movable assembly (3); The friction and wear testing device further comprises a lubrication component (6), wherein the lubrication component (6) is connected to the first lubrication channel (210), and the lubrication component (6) is used to inject lubrication grease into the first lubrication channel (210).

9. The friction and wear testing device according to any one of claims 1 to 5 and 7, characterized in that: The driving assembly (4) comprises two driving cylinders (41), the two driving cylinders (41) are respectively located on opposite sides of the guide shaft (22), the extension direction of the driving cylinders (41) is the length direction of the guide shaft (22), one end of each of the two driving cylinders (41) is connected to the supporting assembly (1), and the other end of the driving cylinder (41) is connected to the test moving assembly (3).

10. The friction and wear testing device according to any one of claims 1 to 5 and 7, characterized in that: The friction and wear testing device further comprises a water tank (7), wherein the water tank (7) is filled with seawater; The support assembly (1), the test fixing assembly (2), the test moving assembly (3) and the driving assembly (4) are all located in the water tank (7), and the test fixing assembly (2) and the test moving assembly (3) are immersed in seawater.

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