A device for detecting the wear performance of bearings

Abstract

The present invention relates to the technical field of bearing wear detection, and mainly relates to a bearing wear performance detection device, which includes a detection table for placing the inner and outer rings of the bearing. A chute is provided on the detection table, and a positioning column is installed in the chute. The device also includes a rotating motor installed on the detection table. The output end of the rotating motor is fixed with a rotating rod through a coupling, and an electric push rod I is fixed at the bottom of the rotating rod. A connecting seat is fixed at the outer end of the electric push rod I. A rotating frame is rotatably installed on the outer side of the connecting seat through a bearing. A baffle is fixed on one side of the connecting seat, and a magnetic attraction block that fits with the rotating frame is fixed on the other side. In the present invention, a spraying unit is designed to spray fluorescent agent on the inner and outer rings of the bearing. The fluorescent agent penetrates into the surface opening defects, and then in cooperation with a wiping unit, the residual fluorescent agent on the outer walls of the inner and outer rings is removed, so as to retain the fluorescent agent remaining in the defects, and the wear degree of the bearing can be more obviously detected.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing wear detection, and specifically relates to a device for detecting the wear performance of bearings. Background Art

[0002] A bearing is a mechanical component used to support and reduce friction in rotational or reciprocating motion. It generally consists of an inner ring, an outer ring, rolling elements, and a cage.

[0003] During the operation of the bearing, due to the periodic contact stress between the rolling elements and the raceways. Under the long-term repeated action, micro-cracks will appear on the material surface, and if there are impurities such as dust and sand grains in the bearing working environment, or abrasive particles such as metal debris in the lubricating oil, and these particles enter between the rolling elements and the raceways, it will also cause bearing wear. The existing methods for detecting the wear performance of bearings mainly include visual inspection, magnetic particle inspection, and measurement methods. The visual inspection method has low detection accuracy and completely relies on the naked eye of humans to observe. The magnetic particle method and the measurement method have requirements for the bearing size. When the bearing is a large-size bearing used in large equipment, using the magnetic particle method requires a large amount of magnetic powder, and the measurement method has a large number of measured values, which requires personnel to spend a lot of time measuring, resulting in low detection efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for detecting the wear performance of bearings to solve the problems of consuming a large amount of magnetic powder and manpower when inspecting large-size bearings as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A device for detecting the wear performance of bearings, including a detection table for placing the inner and outer rings of the bearing, a chute is opened on the detection table, a positioning column is installed in the chute, and further includes a rotating motor installed on the detection table. The output end of the rotating motor is fixed with a rotating rod through a coupling, and an electric push rod I is fixed at the bottom of the rotating rod. A connecting seat is fixed at the outer end of the electric push rod I. The outer side of the connecting seat is rotatably installed with a rotating frame through a bearing, and a baffle is fixed on one side of the connecting seat, and a magnetic attraction block that fits with the rotating frame is fixed on the other side; and a docking ring installed on the rotating frame, a spraying unit is inserted into the docking ring, and the spraying unit is used to spray a fluorescent agent between the inner and outer rings. A driving member for driving the spraying unit to lift is installed on the connecting seat; and a wiping unit installed on the rotating frame is used to wipe off the fluorescent agent between the inner and outer rings.

[0006] Preferably, the spraying unit includes a lifting column slidably inserted into the docking ring. A toothed plate is fixed to the outer side of the lifting column and is docked with the driving member. A track groove is formed in the lifting column. A spraying rod is slidably inserted into the lifting column. A plug post slidably inserted into the track groove is fixed to the outer side of the spraying rod. A spraying ring is fixed to the bottom of the spraying rod, and a hose is fixed to the top of the spraying rod. An elastic member abutting against the lifting column is installed at the bottom of the spraying rod, and an abutting member is installed at the top of the spraying rod.

[0007] Preferably, the elastic member includes a bottom plate fixed to the bottom of the lifting column. An extrusion spring abutting against the bottom plate and the spraying ring is sleeved on the outer side of the spraying rod.

[0008] Preferably, the abutting member includes an abutting plate fixed to the top of the spraying rod. A limiting plate and a clamping plate are fixed to the rotating frame.

[0009] Preferably, the driving member includes a driving motor fixed to the connecting seat. A driving gear meshing with the toothed plate is fixed to the output end of the driving motor. A transmission rod is fixed to the outer side of the driving gear. A docking groove is formed in the outer side of the transmission rod. A toothed block adapted to the docking groove is fixed to the bottom plate.

[0010] Preferably, the wiping unit includes an electric push rod two fixed to the rotating frame. A connecting plate is fixed to the outer end of the electric push rod two. A spraying pipe is rotatably installed on the connecting plate. A plastic bag is fixed to the outer end of the spraying pipe. Spraying holes are formed in the outer side of the plastic bag. A hose for feeding is rotatably installed on the spraying pipe. A rotating member for driving the spraying pipe to rotate is installed on the connecting plate.

[0011] Preferably, the rotating member includes a rotating motor fixed to the connecting plate. A rotating gear is fixed to the output end of the rotating motor. A transmission gear meshing with the rotating gear is fixed to the outer side of the spraying pipe.

[0012] Preferably, an end plate is fixed to the top of the rotating rod. Two infusion pumps are installed on the end plate. The two infusion pumps are respectively docked with the spraying pipe and the spraying tube through hoses. The outer ends of the infusion pumps are docked with a liquid supply device through hoses.

[0013] Preferably, a fluff layer is arranged on the outer side of the plastic bag.

[0014] Preferably, the outer side of the toothed plate is attached to the inner wall of the notch of the docking ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the present invention, a designed spraying unit sprays a fluorescent agent on the inner and outer rings of a bearing. The fluorescent agent penetrates into surface opening defects, and then in cooperation with a wiping unit, the residual fluorescent agent on the outer walls of the inner and outer rings is removed, so as to retain the fluorescent agent remaining in the defects, and the wear degree of the bearing can be more obviously detected.

[0017] In the present invention, the designed driving member can drive the spraying unit to perform lifting adjustment, which can more conveniently switch between the spraying unit and the wiping unit, improving the detection efficiency. Description of the Drawings

[0018] Figure 1 Schematic diagram of the overall structure of the present invention docked with the bearing;

[0019] Figure 2 Schematic diagram of the structure of the bearing after partial section of the present invention;

[0020] Figure 3 Front view of the present invention;

[0021] Figure 4 Schematic diagram of the overall structure of the present invention;

[0022] Figure 5 Schematic diagram of the docking of the spraying unit of the present invention with the connecting seat;

[0023] Figure 6 Schematic diagram of the structure of the spraying unit of the present invention in the bearing raceway;

[0024] Figure 7 Schematic diagram of the structure of the spraying ring in the spraying unit of the present invention after rotation;

[0025] Figure 8 Schematic diagram of the upward movement state of the spraying unit of the present invention;

[0026] Figure 9 Schematic diagram of the state after the docking groove and the tooth block of the present invention are docked;

[0027] Figure 10 Schematic diagram of the state of the rotating frame of the present invention after rotating 90°;

[0028] Figure 11 Schematic diagram of the plug post and the track groove of the present invention.

[0029] In the figure: 1, inspection table; 2, sliding groove; 3, positioning post; 4, rotating motor; 5, rotating rod; 6, first electric push rod; 7, connecting seat; 8, rotating frame; 9, baffle; 10, magnetic attraction block; 11, docking ring; 12, spraying unit; 13, driving part; 14, wiping unit; 15, lifting post; 16, toothed plate; 17, track groove; 18, spraying rod; 19, inserting post; 20, spraying ring; 21, elastic part; 22, abutting part; 23, bottom plate; 24, extrusion spring; 25, abutting plate; 26, limiting plate; 27, clamping plate; 28, driving motor; 29, driving gear; 30, transmission rod; 31, docking groove; 32, toothed block; 33, second electric push rod; 34, connecting plate; 35, spraying pipe; 36, plastic bag; 37, spraying hole; 38, rotating part; 39, rotating motor; 40, rotating gear; 41, transmission gear; 42, end plate; 43, infusion pump. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figure 1 - Figure 5 , a bearing wear performance detection device shown in the figure, including an inspection table 1 for placing the inner ring and outer ring of the bearing. A sliding groove 2 is opened on the inspection table 1, and a positioning post 3 is installed in the sliding groove 2. It also includes a rotating motor 4 installed on the inspection table 1. The output end of the rotating motor 4 is fixed with a rotating rod 5 through a coupling. The bottom of the rotating rod 5 is fixed with a first electric push rod 6. The outer end of the first electric push rod 6 is fixed with a connecting seat 7. The outer side of the connecting seat 7 is rotatably installed with a rotating frame 8 through a bearing. One side of the connecting seat 7 is fixed with a baffle 9, and the other side is fixed with a magnetic attraction block 10 that fits the rotating frame 8; and a docking ring 11 installed on the rotating frame 8. A spraying unit 12 is inserted into the docking ring 11. The spraying unit 12 is used to spray fluorescent agent between the inner ring and the outer ring. A driving part 13 for driving the spraying unit 12 to lift is installed on the connecting seat 7; and a wiping unit 14 installed on the rotating frame 8 is used to remove the fluorescent agent between the inner ring and the outer ring.

[0032] In this solution, the inner ring and the outer ring of the bearing are concentrically placed on the detection table 1 and positioned by means of the positioning posts 3. Then, the electric push rod 6 drives the connecting seat 7 to move above the inner ring and the outer ring. The spraying unit 12 is driven by the driving member 13 to move down to the raceway between the inner ring and the outer ring. Then, with the help of the rotating motor 4, the rotating rod 5 and the spraying unit 12 are driven to rotate, so as to spray the fluorescent agent on the inner walls of the inner ring and the outer ring. Subsequently, the spraying unit 12 rises through the driving member 13 and rotates the rotating frame 8 to place the wiping unit 14 in the raceway between the inner ring and the outer ring, so as to remove the residual fluorescent agent on the inner walls of the inner ring and the outer ring, which is convenient for observing the fluorescent agent infiltrated into the surface opening defects, and thus the bearing wear condition can be clearly observed;

[0033] It should be noted that: the wiping unit 14 can effectively wipe the fluorescent agent attached to the inner ring and the outer ring, while the fluorescent agent infiltrated into the notches on the inner walls of the inner ring and the outer ring adheres to the notches. Therefore, after wiping, the personnel can still clearly observe the defect degree of the bearing raceway through the residual fluorescent agent.

[0034] Further, referring to Figure 5 - Figure 11 The spraying unit 12 includes a lifting column 15 slidably inserted into the docking ring 11. A toothed plate 16 is fixed on the outside of the lifting column 15 and is docked with the driving member 13. A track groove 17 is opened in the lifting column 15. A spraying rod 18 is slidably inserted into the lifting column 15. A plug column 19 fixed to the outside of the spraying rod 18 is slidably inserted into the track groove 17. A spraying ring 20 is fixed to the bottom of the spraying rod 18. A hose is fixed to the top of the spraying rod 18. An elastic member 21 that abuts against the lifting column 15 is installed at the bottom of the spraying rod 18, and an abutting member 22 is installed at the top of the spraying rod 18;

[0035] It should be noted that: when the plug column 19 moves along the track groove 17, it can drive the spraying rod 18 to rotate, so that the spraying ring 20 rotates 90°, which is more convenient to insert between the inner ring and the outer ring. At the same time, in order to enable the lifting column 15 to move stably in the docking ring 11, the outside of the toothed plate 16 is designed to fit the inner wall of the notch of the docking ring 11.

[0036] Among them, the elastic member 21 includes a bottom plate 23 fixed to the bottom of the lifting column 15. An extrusion spring 24 that abuts against the bottom plate 23 and the spraying ring 20 is sleeved on the outside of the spraying rod 18. The existence of the extrusion spring 24 enables the spraying rod 18 to maintain a downward extended state without external force, so that the angle of the spraying ring 20 will not change easily;

[0037] Meanwhile, the abutting member 22 includes an abutting plate 25 fixed to the top of the spraying rod 18. A limiting plate 26 and a clamping plate 27 are fixed to the rotating frame 8. After the abutting plate 25 on the spraying rod 18 abuts against the limiting plate 26, when the lifting column 15 continues to move downward, it can drive the spraying rod 18 to rotate correspondingly.

[0038] Further, referring to Figure 5 - Figure 9 , the driving member 13 includes a driving motor 28 fixed to the connecting seat 7. A driving gear 29 meshing with the toothed plate 16 is fixed to the output end of the driving motor 28. A transmission rod 30 is fixed to the outside of the driving gear 29. A docking groove 31 is formed on the outside of the transmission rod 30. A toothed block 32 adapted to the docking groove 31 is fixed to the bottom plate 23. Driven by the driving motor 28, the driving gear 29 rotates, so that the toothed plate 16 and the lifting column 15 are lifted or lowered correspondingly.

[0039] In this solution, the principle of the driving member 13 driving the spraying unit 12 to lift and lower is as follows:

[0040] First, by rotating the driving motor 28, the driving gear 29 is driven to rotate, thereby driving the corresponding lifting and lowering of the toothed plate 16, so that the lifting column 15 is lifted and lowered correspondingly within the docking ring 11. When descending, the spraying ring 20 will be first sent between the inner ring and the outer ring. After entering the raceways of the inner ring and the outer ring, the abutting plate 25 at the outer end of the spraying rod 18 will abut against the limiting plate 26 first. After that, as the lifting column 15 continues to move downward, the spraying rod 18 will rotate correspondingly, so that the spraying ring 20 rotates 90° in the raceway, making the spraying nozzles on the outside of the spraying ring 20 face the outer walls of the inner ring and the outer ring. Then, by driving the rotating rod 5 to rotate with the rotating motor 4, the spraying ring 20 rotates along the raceway, thereby spraying the fluorescent agent on the outer walls of the inner ring and the outer ring;

[0041] After the spraying is completed, as shown in Figure 7 - Figure 9 , by rotating the driving motor 28 in the reverse direction, the toothed plate 16 is lifted correspondingly. When lifting, since the abutting plate 25 on the spraying rod 18 abuts against the clamping plate 27, the spraying rod 18 does not move. The upward movement of the lifting column 15 will drive the spraying rod 18 to rotate correspondingly until it rotates 90°. At this time, the abutting plate 25 also disengages from the clamping plate 27. Subsequently, by the upward movement of the lifting column 15, the spraying rod 18 and the spraying ring 20 are driven to move upward synchronously until they are separated from the bearing;

[0042] Finally, as shown in Figure 9 and Figure 10As shown in the figure, the lifting column 15 continues to move upward until the tooth block 32 abuts against the docking groove 31. At this time, when the driving motor 28 drives the transmission rod 30 to continue rotating, the entire lifting column 15 and the rotating frame 8 will rotate 90°, until the rotating frame 8 abuts against the baffle 9. At this time, the wiping unit 14 will be rotated to the lower part, which is convenient for the wiping unit 14 to enter the bearing for wiping.

[0043] After the wiping is completed, the driving motor 28 is rotated again to reset the rotating frame 8. After the rotating frame 8 is reset, it will be positioned by the magnetic attraction block 10, so as to ensure that the rotating frame 8 can remain fixed without external force. Then, the spraying unit 12 is driven to lift and spray.

[0044] In this solution, the spraying rod 18 first descends, then rotates between the inner ring and the outer ring. After spraying, it rotates in the reverse direction and moves upward until it drives the entire rotating frame 8 to rotate. This method is more convenient for the spraying operation of the spraying unit 12, and at the same time, it is also convenient for the conversion between the spraying unit 12 and the wiping unit 14.

[0045] Further, refer to Figure 6 - Figure 10 The wiping unit 14 includes an electric push rod two 33 fixed to the rotating frame 8. The outer end of the electric push rod two 33 is fixed with a connecting plate 34. A spray pipe 35 is rotatably installed on the connecting plate 34. The outer end of the spray pipe 35 is fixed with a plastic bag 36. Spray holes 37 are opened on the outside of the plastic bag 36. A hose for feeding is rotatably installed on the spray pipe 35. A rotating member 38 for driving the spray pipe 35 to rotate is installed on the connecting plate 34.

[0046] In this solution, the principle of using the wiping unit 14 to wipe between the inner ring and the outer ring of the bearing:

[0047] First, after the rotating frame 8 drives the rotation, the wiping unit 14 is aligned between the inner ring and the outer ring of the bearing. By extending the electric push rod two 33, the plastic bag 36 enters the raceway of the bearing. Then, through an external liquid supply device, liquid is supplied into the plastic bag 36, so that the spray holes 37 on the plastic bag 36 spray out the cleaning liquid outward, which is used to clean the residual fluorescent agent on the inner ring and the outer ring.

[0048] It should also be noted that since the plastic bag 36 itself has a certain elasticity, when the liquid supply volume is greater than the liquid discharge volume, the plastic bag 36 will expand, so that it fits with the inner ring and the outer ring walls. When the plastic bag 36 moves along the raceway, it can play a good wiping role. At the same time, in order to improve the wiping effect, a fluff layer is provided on the outside of the plastic bag 36.

[0049] In this solution, an end plate 42 is fixed to the top of the rotating rod 5. Two infusion pumps 43 are installed on the end plate 42. The two infusion pumps 43 are respectively connected to the spraying pipe 35 and the spraying tube through hoses. The outer ends of the infusion pumps 43 are connected to the liquid supply device through hoses. The infusion pumps 43 are used to transport the fluorescent agent and the cleaning liquid. To avoid hose entanglement, the rotation motor 4 can be rotated one full turn forward and then one full turn backward to control the movement of the plastic bag 36 and the spraying ring 20 in the raceway.

[0050] In this solution, the method for detecting the wear performance of the bearing includes the following steps:

[0051] In the first step, the inner ring and the outer ring of the bearing are concentrically placed on the detection table 1 by the personnel, and then positioned with the positioning posts 3.

[0052] In the second step, the electric push rod 6 drives the connecting seat 7, so that the bottom of the spraying unit 12 is located between the inner and outer rings of the bearing.

[0053] In the third step, power is provided by the driving member 13 to drive the spraying ring 20 at the bottom of the spraying unit 12 to move down into the bearing raceway, and the rotation motor 4 is rotated to start spraying the fluorescent agent on the bearing raceway.

[0054] In the fourth step, after spraying, the driving member 13 is used to lift the spraying unit 12 and drive the rotating frame 8 to rotate, so that the bottom of the wiping unit 14 is located between the inner and outer rings of the bearing.

[0055] In the fifth step, the plastic bag 36 at the bottom of the wiping unit 14 is rotated in the raceway, so that the fluorescent agent remaining on the outer wall of the raceway can be effectively wiped off. However, the fluorescent agent in the notch on the bearing raceway cannot be contacted and wiped, so it will be retained.

[0056] In the sixth step, the wiping unit 14 is removed, the inner and outer rings of the bearing are taken off by the personnel, and specific light is used for irradiation to make the fluorescent agent emit light. Through the degree of light emission, the wear degree inside the bearing can be clearly observed, making the detection more convenient.

[0057] Embodiment 2: Please refer to Figure 7 - Figure 10 , this embodiment further illustrates Embodiment 1, and the difference lies in optimizing and disclosing one of the embodiments of the rotating member 38.

[0058] Specifically, the rotating member 38 includes a rotating motor 39 fixed on the connecting plate 34. The output end of the rotating motor 39 is fixed with a rotating gear 40. A transmission gear 41 meshing with the rotating gear 40 is fixed on the outside of the spraying pipe 35.

[0059] It should be noted that after the plastic bag 36 is placed in the raceway, the plastic bag 36 is inflated by supplying liquid, and then moves along the raceway. During the movement, the power is provided by rotating the motor 39 to drive the rotation of the rotating gear 40, so that the transmission gear 41 outside the material spraying pipe 35 rotates accordingly, thereby driving the material spraying pipe 35 and the plastic bag 36 to rotate correspondingly, realizing self-rotation in the raceway and improving the wiping effect on the raceway.

[0060] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0061] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bearing wear performance detection device, comprising: A detection table (1) for placing the inner and outer rings of the bearing. A chute (2) is opened on the detection table (1), and a positioning column (3) is installed in the chute (2); It is characterized in that it further comprises: A rotating motor (4) installed on the detection table (1). The output end of the rotating motor (4) is fixed with a rotating rod (5) through a coupling, and an electric push rod one (6) is fixed at the bottom of the rotating rod (5). A connecting seat (7) is fixed at the outer end of the electric push rod one (6). A rotating frame (8) is rotatably installed on the outer side of the connecting seat (7) through a bearing, and a baffle (9) is fixed on one side of the connecting seat (7), and a magnetic attraction block (10) that fits with the rotating frame (8) is fixed on the other side; and, A docking ring (11) installed on the rotating frame (8). A spraying unit (12) is inserted into the docking ring (11). The spraying unit (12) is used to spray fluorescent agent between the inner and outer rings. A driving member (13) for driving the spraying unit (12) to lift is installed on the connecting seat (7); and, A wiping unit (14) installed on the rotating frame (8) is used to remove the fluorescent agent between the inner and outer rings; the spraying unit (12) includes a lifting column (15) slidably inserted into the docking ring (11). A toothed plate (16) opposite to the driving member (13) is fixed on the outer side of the lifting column (15). A track groove (17) is opened in the lifting column (15). A spraying rod (18) is slidably inserted into the lifting column (15). An inserting column (19) that slidably plugs into the track groove (17) is fixed on the outer side of the spraying rod (18). A spraying ring (20) is fixed at the bottom of the spraying rod (18), and a hose is fixed at the top of the spraying rod (18). An elastic member (21) that abuts against the lifting column (15) is installed at the bottom of the spraying rod (18), and a abutting member (22) is installed at the top of the spraying rod (18).

2. The bearing wear performance detection device according to claim 1, characterized in that: The elastic member (21) includes a bottom plate (23) fixed at the bottom of the lifting column (15). A compression spring (24) that abuts against the bottom plate (23) and the spraying ring (20) is sleeved on the outer side of the spraying rod (18).

3. The bearing wear performance detection device according to claim 1, characterized in that: The abutting member (22) includes an abutting plate (25) fixed at the top of the spraying rod (18). A limiting plate (26) and a clamping plate (27) are fixed on the rotating frame (8).

4. The bearing wear performance detection device according to claim 2, characterized in that: The driving member (13) includes a driving motor (28) fixed on the connecting seat (7). The output end of the driving motor (28) is fixed with a driving gear (29) that meshes with the toothed plate (16). A transmission rod (30) is fixed on the outer side of the driving gear (29). A docking groove (31) is opened on the outer side of the transmission rod (30). A toothed block (32) adapted to the docking groove (31) is fixed on the bottom plate (23).

5. The bearing wear performance detection device according to claim 1, characterized in that: The wiping unit (14) includes an electric push rod two (33) fixed to the rotary frame (8). A connecting plate (34) is fixed to the outer end of the electric push rod two (33). A spraying pipe (35) is rotatably installed on the connecting plate (34). A plastic bag (36) is fixed to the outer end of the spraying pipe (35). Spraying holes (37) are formed in the outer side of the plastic bag (36). A hose for feeding is rotatably installed on the spraying pipe (35). A rotating member (38) for driving the spraying pipe (35) to rotate is installed on the connecting plate (34).

6. The bearing wear performance detection device according to claim 5, characterized in that: The rotating member (38) includes a rotating motor (39) fixed to the connecting plate (34). A rotating gear (40) is fixed to the output end of the rotating motor (39). A transmission gear (41) meshing with the rotating gear (40) is fixed to the outer side of the spraying pipe (35).

7. An apparatus for detecting the wear performance of a bearing according to claim 5, characterized in that: An end plate (42) is fixed to the top of the rotating rod (5). Two infusion pumps (43) are installed on the end plate (42). The two infusion pumps (43) are respectively connected to the spraying pipe (35) and the spraying tube through hoses. The outer ends of the infusion pumps (43) are connected to a liquid supply device through hoses.

8. An apparatus for detecting the wear performance of a bearing according to claim 5, characterized in that: A fluff layer is arranged on the outer side of the plastic bag (36).

9. The bearing wear performance detection device according to claim 1, characterized in that: The outer side of the toothed plate (16) is attached to the inner wall of the notch of the docking ring (11).

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