Device for detecting wear performance of motor bearing

Abstract

The invention discloses a motor bearing wear performance detection device, and relates to the technical field of bearing wear detection.The motor bearing wear performance detection device comprises a workbench, a portal frame is fixedly connected to the upper end face of the workbench, an electric telescopic column is fixedly connected to the lower end face of the portal frame, and a connecting block is fixedly connected to the end, away from the portal frame, of the electric telescopic column; a conveying pipe is fixedly connected to one side of the connecting block in a penetrating mode, spraying pipes are fixedly connected to the two sides of the portal frame, nozzles are fixedly connected to the ends, away from the connecting block, of the spraying pipes, and the distance between the two nozzles can be adjusted according to the size of a bearing, so that the nozzles can descend into a bearing raceway to spray fluorescent agents; according to the fluorescent agent spraying device, the fluorescent agent can be ensured to uniformly cover the raceways of the bearings with different sizes, the fluorescent agent can be prevented from being accumulated for the small-size bearings, and the situation that partial areas are not covered due to insufficient spraying can be prevented for the large-size bearings, so that the fluorescent agent on each bearing raceway is ensured to be uniformly distributed, and more accurate and reliable data are provided for subsequent detection.

Description

Technical Field

[0001] This invention relates to the field of bearing wear detection technology, specifically to a device for detecting the wear performance of motor bearings. Background Technology

[0002] An electric motor bearing wear performance testing device is a piece of equipment used to detect the degree of wear of electric motor bearings. It mainly includes vibration testing, fluorescent agent testing, eddy current sensor testing, and profile measuring instrument testing. In the fluorescent agent testing process, a fluorescent agent is sprayed onto the inner and outer ring surfaces of the bearing, and the fluorescent agent penetrates into surface opening defects. By wiping away the residual fluorescent agent on the surface, the fluorescent agent in the defects is retained, thus clearly showing the location of the wear. A bearing wear performance testing device disclosed in existing patent CN119827514A includes a testing platform for arranging the inner and outer rings of the bearing. The testing platform has a groove with a positioning column installed inside. It also includes a rotary motor mounted on the testing platform, with a rotating rod fixed to the output end of the motor via a coupling. An electric push rod is fixed to the bottom of the rotating rod, and a connecting seat is fixed to the outer end of the electric push rod. A rotating frame is rotatably mounted on the outer side of the connecting seat via a bearing. A baffle is fixed to one side of the connecting seat, and a magnetic block that fits against the rotating frame is fixed to the other side. Finally, it includes a mating ring mounted on the rotating frame, with a spraying unit inserted inside the mating ring. The spraying unit is used to... Fluorescent agent is sprayed between the inner and outer rings. A drive unit for raising and lowering the spraying unit is installed on the connecting seat. A wiping unit is installed on the rotating frame to remove the fluorescent agent between the inner and outer rings. The designed spraying unit sprays fluorescent agent onto the inner and outer rings of the bearing, allowing the fluorescent agent to penetrate into the surface opening defects. The wiping unit then removes the residual fluorescent agent on the outer walls of the inner and outer rings, thus retaining the residual fluorescent agent in the defects. This allows for a more obvious detection of the bearing's wear. The drive unit designed in this invention can drive the spraying unit to raise and lower, and can easily switch between the spraying unit and the wiping unit, improving detection efficiency. While the aforementioned method can spray fluorescent agent onto the raceways of bearings, the shape of the spraying ring is not adjustable. Since the spacing between raceways varies depending on the bearing size, the fixed-shape spraying ring cannot be adjusted to accommodate different bearing sizes. This not only makes it difficult to ensure uniform spraying of the fluorescent agent on every bearing raceway, but also leads to overspray and fluorescent agent buildup for small bearings, and underspray and missing coverage for large bearings, affecting the accuracy of subsequent bearing raceway condition inspections. Furthermore, because it cannot be adjusted according to bearing size, the spraying ring cannot completely cover all the raceway areas to be inspected, limiting its applicability to bearings of specific sizes. When inspecting bearings of other sizes, it is necessary to replace the appropriate spraying ring or use other equipment, thus reducing the equipment's versatility and utilization rate.

[0003] Therefore, this invention proposes a device for detecting the wear performance of motor bearings to solve the above problems. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a device for detecting the wear performance of motor bearings, which can effectively solve the problems in existing technologies.

[0005] (II) Technical Solution To achieve the above objectives, the present invention can be accomplished through the following technical solutions: A device for testing the wear performance of motor bearings includes a workbench, a gantry frame fixedly connected to the upper surface of the workbench, an electric telescopic column fixedly connected to the lower surface of the gantry frame, a connecting block fixedly connected to the end of the electric telescopic column away from the gantry frame, a conveying pipe fixedly connected through one side of the connecting block, spraying pipes fixedly connected to both sides of the gantry frame, and spray nozzles fixedly connected to the ends of the spraying pipes away from the connecting blocks. The conveying pipes and spraying pipes are interconnected. The device also includes a spraying gap adjustment mechanism and a bearing limiting mechanism. The spraying gap adjustment mechanism includes symmetrically arranged telescopic pipes, each fixedly connected to the spraying pipes. The spraying gap adjustment mechanism is used to adjust the position of the spray nozzles according to the position of the bearing raceway. The bearing limiting mechanism is used to limit the bearing before spraying inspection.

[0006] As a further embodiment of the present invention: the spray gap adjustment mechanism further includes a fixed column, the fixed column is fixedly connected to the lower end face of the connecting block, a lifting block is slidably connected to the outer surface of the fixed column, a connecting plate is rotatably connected to both sides of the lifting block, a fixed plate is rotatably connected to the side of the connecting plate away from the lifting block, and the fixed plates are all fixedly connected to the outer surface of the spray pipe.

[0007] As a further embodiment of the present invention: the outer surface of the fixed column is provided with equidistant locking holes, the lifting block is slidably connected with a locking post, the locking post and the locking holes are locked together, and a pull plate is fixedly connected to the end of the locking post away from the locking hole.

[0008] As a further aspect of the present invention: a first spring is fixedly connected to the side of the pull plate near the lifting block, the side of the first spring away from the pull plate is fixedly connected to the side wall of the lifting block, and the first spring is sleeved on the outer surface of the locking post.

[0009] As a further embodiment of the present invention: the bearing limiting mechanism includes an annular plate, the annular plate being located on the upper surface of a workbench, the upper surface of the workbench having an annular groove, the annular plate being slidably connected within the annular groove, a detection platform being fixedly connected to the upper surface of the annular plate, a horizontal groove being formed on the upper surface of the detection platform, and vertical grooves being symmetrically formed on the upper surface of the detection platform, a moving block and a slider being symmetrically slidably connected within the horizontal groove, rollers being rotatably connected to the upper surface of each moving block, and an arc-shaped limiting block being fixedly connected to the slider on the side near the moving block.

[0010] As a further embodiment of the present invention: a centering block and an inner support block are slidably connected in the vertical groove, and a threaded rod is threadedly connected between the centering block and the inner support block. The threaded rod is rotatably connected to the testing platform, and a knob is fixedly connected to one end of the threaded rod through the testing platform.

[0011] As a further embodiment of the present invention: the lower end face of each of the moving blocks is rotatably connected to a second elastic telescopic plate, the end of the second elastic telescopic plate away from the moving block is rotatably connected to the lower end face of the inner support block, the lower end face of each of the sliders is rotatably connected to a first elastic telescopic plate, and the first elastic telescopic plate is rotatably connected to the lower end face of the center block.

[0012] As a further aspect of the present invention: both the first elastic telescopic plate and the second elastic telescopic plate include a hollow plate and an extension plate, the extension plates are slidably connected through the hollow plate, and a second spring is fixedly connected between the extension plate and the interior of the hollow plate.

[0013] As a further aspect of the present invention: a support frame is fixedly connected to the upper surface of the workbench, a drive motor is fixedly connected to the upper surface of the support frame, a drive shaft is fixedly connected to the output end of the drive motor, a transmission gear is fixedly connected to the lower end of the drive shaft, a ring rack is meshed with one side of the transmission gear, and the ring rack is fixedly connected to the outer surface of the ring plate.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a device for detecting the wear performance of motor bearings, which has the following advantages: 1. The spray gap adjustment mechanism allows for adjustment of the distance between the two nozzles according to the size of the bearing. This enables the nozzles to descend into the bearing raceway to spray fluorescent agent, ensuring uniform coverage of the raceway for bearings of different sizes. For small bearings, this prevents fluorescent agent buildup, while for large bearings, it prevents under-coating and ensures uniform distribution of fluorescent agent on each bearing raceway. This provides more accurate and reliable data for subsequent testing. Furthermore, the nozzles' ability to descend into the raceway allows the fluorescent agent to penetrate every corner, including areas difficult to reach with traditional spraying methods. This ensures all raceway areas requiring testing are covered by the fluorescent agent, reducing the possibility of missed detections. Moreover, the nozzles can be adapted to the testing needs of bearings of different sizes without needing to be replaced, thus improving the versatility and utilization of the nozzles and reducing equipment investment costs for enterprises.

[0015] 2. The set locking pins and holes can limit the nozzle position after adjustment. This not only effectively prevents the nozzle from moving accidentally in the horizontal direction and ensures that the nozzle always stays in the adjusted and precise position, but also allows the fluorescent agent to be sprayed stably and accurately onto the designated area of ​​the bearing raceway. Moreover, a stable nozzle position is the key to obtaining a uniform spraying effect. When the nozzle position is fixed, the spray angle, range and flow rate of the fluorescent agent can be kept consistent, avoiding uneven spraying problems caused by nozzle shaking or deviation, such as local fluorescent agent accumulation or insufficient coverage, thereby improving the uniformity of fluorescent agent distribution on the bearing raceway surface.

[0016] 3. The bearing limiting mechanism allows for simultaneous limiting and fixing of the inner and outer rings of the bearing before spraying, facilitating the nozzle's entry into the bearing raceway to spray fluorescent agent. This not only ensures uniform spraying according to preset parameters and trajectory, preventing uneven spraying due to bearing movement or displacement, but also avoids localized accumulation or absence of fluorescent agent, resulting in a uniform coating layer on the raceway surface. Furthermore, the limiting and fixing mechanism prevents the bearing from rotating or moving during spraying, ensuring the nozzle accurately reaches all parts of the raceway for comprehensive spraying of the entire circumference. This prevents unsprayed areas due to bearing movement, thus ensuring the integrity of the spraying process.

[0017] 4. Through the design of the hollow plate, extension plate, and second spring, the device can automatically adjust and adapt during the simultaneous limiting and fixing of the inner and outer rings of the bearing. When dealing with bearings of different sizes, the second spring can not only generate corresponding expansion and contraction deformation according to the actual size of the bearing, but also drive the extension plate to slide within the hollow plate, thereby automatically adjusting the limiting and fixing range to ensure a tight fit between the inner and outer rings of various bearing sizes and achieve precise limiting. Moreover, because this limiting and fixing structure can adapt to bearings of various sizes and shapes, the same set of equipment can be used for fluorescent agent spraying and testing of different types of bearings without the need to equip each bearing with a dedicated limiting device. This further improves the versatility and utilization rate of the equipment and reduces the equipment investment cost for enterprises. Attached Figure Description

[0018] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the electric telescopic column and the nozzle of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram of region A in the middle; Figure 4 This is a schematic diagram of the upper surface structure of the worktable of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram of region B in the middle; Figure 6 This is a schematic diagram of the connection structure between the workbench and the testing station of the present invention; Figure 7 This is a schematic diagram of the connection structure between the center block and the inner support block of the present invention; Figure 8 This is a schematic diagram of the connection structure between the hollow plate and the extension plate of the present invention.

[0020] In the diagram: 1. Workbench; 2. Inspection table; 3. Gantry frame; 4. Electric telescopic column; 5. Connecting block; 6. Conveying pipe; 701. Telescopic tube; 702. Fixing plate; 703. Connecting plate; 704. Fixing column; 705. Lifting block; 706. Locking hole; 707. Pull plate; 708. Locking column; 709. First spring; 801. Support frame; 802. Drive motor; 803. Drive shaft; 804. Transmission gear; 805. Ring rack; 806. Ring plate; 807. Knob; 808. Threaded rod; 809. Centering block; 810. Inner support block; 811. Moving block; 812. Roller; 813. Slider; 814. Arc-shaped limiting block; 815. First elastic telescopic plate; 816. Second elastic telescopic plate; 8001. Hollow plate; 8002. Extension plate; 8003. Second spring; 9. Spray pipe; 10. Spray nozzle; 11. Horizontal groove; 12. Vertical groove; 13. Annular groove. Detailed Implementation

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

[0022] This embodiment provides a device for detecting the wear performance of motor bearings, such as... Figure 1 - Figure 8 As shown, the system includes a workbench 1, a gantry frame 3 fixedly connected to the upper surface of the workbench 1, an electric telescopic column 4 fixedly connected to the lower surface of the gantry frame 3, a connecting block 5 fixedly connected to the end of the electric telescopic column 4 away from the gantry frame 3, a conveying pipe 6 fixedly connected through one side of the connecting block 5, spraying pipes 9 fixedly connected to both sides of the gantry frame 3, and spray nozzles 10 fixedly connected to the ends of the spraying pipes 9 away from the connecting block 5. The conveying pipe 6 and the spraying pipes 9 are connected to each other. The system also includes a spraying gap adjustment mechanism and a bearing limiting mechanism. The spraying gap adjustment mechanism includes symmetrically arranged telescopic pipes 701, which are all fixedly connected to the spraying pipes 9. The spraying gap adjustment mechanism is used to adjust the position of the spray nozzles 10 according to the position of the bearing raceway.

[0023] In this embodiment, as Figure 2 and Figure 3 As shown, the spray gap adjustment mechanism also includes a fixed column 704, which is fixedly connected to the lower end face of the connecting block 5. A lifting block 705 is slidably connected to the outer surface of the fixed column 704. A connecting plate 703 is rotatably connected to both sides of the lifting block 705. A fixing plate 702 is rotatably connected to the side of the connecting plate 703 away from the lifting block 705. The fixing plates 702 are fixedly connected to the outer surface of the spray pipe 9. When the lifting block 705 is driven to slide up and down on the outer surface of the fixed column 704, the connecting plates 703 and fixing plates 702 on both sides of the lifting block 705 can push the two spray pipes 9 closer or further apart, thereby adjusting the gap between the spray pipes 9.

[0024] In this embodiment, as Figure 3As shown, the outer surface of the fixed column 704 is provided with equidistant locking holes 706, and the lifting block 705 is slidably connected with a locking post 708. The locking post 708 and the locking hole 706 are locked together. The end of the locking post 708 away from the locking hole 706 is fixedly connected with a pull plate 707. By locking the locking post 708 and the locking hole 706 together, the lifting block 705 can be fixed at a specified position on the outer surface of the fixed column 704.

[0025] In this embodiment, as Figure 3 As shown, a first spring 709 is fixedly connected to the side of the pull plate 707 near the lifting block 705, and the side of the first spring 709 away from the pull plate 707 is fixedly connected to the side wall of the lifting block 705. The first spring 709 is sleeved on the outer surface of the locking post 708. When the pull plate 707 is pulled away from the lifting block 705, the first spring 709 will be pulled. When the pull plate 707 is released, the rebound force of the first spring 709 can automatically pull the pull plate 707 closer to the lifting block 705.

[0026] In existing technologies, although fluorescent agents can be sprayed between the raceways of bearings, the shape of the spraying ring is not adjustable. Since the spacing between raceways varies depending on the bearing size, the fixed-shape spraying ring cannot be adjusted accordingly. Different bearing sizes have different raceway spacings, and a fixed-shape spraying ring not only makes it difficult to ensure uniform spraying of the fluorescent agent on each bearing raceway, but also leads to overspray and fluorescent agent accumulation for small bearings, and underspray and missing coverage for large bearings, affecting the accuracy of subsequent bearing raceway condition inspections. Furthermore, because it cannot be adjusted according to bearing size, the spraying ring cannot completely cover all the raceway areas to be inspected, making it only suitable for bearings within a specific size range. When inspecting bearings of other sizes, it is necessary to replace the corresponding spraying ring or use other equipment, thus reducing the equipment's versatility and utilization rate. Compared to other technologies, this method allows for adjustment of the distance between the two nozzles 10 according to the size of the bearing. This enables the nozzles 10 to descend into the bearing raceway to spray fluorescent agent, ensuring uniform coverage of the raceway for bearings of different sizes. For small bearings, this prevents fluorescent agent buildup, while for large bearings, it prevents under-coating and uncovered areas. This ensures uniform distribution of fluorescent agent on each bearing raceway, providing more accurate and reliable data for subsequent testing. Furthermore, the nozzles 10 can descend into the raceway to reach every corner, including areas difficult to access with traditional spraying methods. This ensures all raceway areas requiring testing are covered by fluorescent agent, reducing the possibility of missed detections. Moreover, it eliminates the need to replace the nozzles 10, adapting to the testing needs of bearings of different sizes. This improves the versatility and utilization of the nozzles 10, reducing equipment investment costs for enterprises.

[0027] At other levels, this embodiment also provides a bearing limiting mechanism for limiting the bearing before bearing spraying inspection, such as... Figure 1 , Figure 4 - Figure 8 As shown, the bearing limiting mechanism includes an annular plate 806, which is located on the upper surface of the worktable 1. An annular groove 13 is provided on the upper surface of the worktable 1. The annular plate 806 is slidably connected in the annular groove 13. A detection table 2 is fixedly connected to the upper surface of the annular plate 806. A horizontal groove 11 is provided on the upper surface of the detection table 2. A vertical groove 12 is symmetrically provided on the upper surface of the detection table 2. A moving block 811 and a slider 813 are symmetrically slidably connected in the horizontal groove 11. Rollers 812 are rotatably connected to the upper surface of the moving block 811. Arc-shaped limiting blocks 814 are fixedly connected to the slider 813 on the side near the moving block 811.

[0028] In this embodiment, as Figure 5 and Figure 7 As shown, a centering block 809 and an inner support block 810 are slidably connected in the vertical groove 12. A threaded rod 808 is threadedly connected between the centering block 809 and the inner support block 810. The threaded rod 808 is rotatably connected to the testing table 2. A knob 807 is fixedly connected to one end of the threaded rod 808 through the testing table 2. When the knob 807 is rotated, the threaded rod 808 is rotated. Since both the centering block 809 and the inner support block 810 are threadedly connected to the threaded rod 808, the centering block 809 and the inner support block 810 can be driven to slide synchronously in the vertical groove 12.

[0029] In this embodiment, as Figure 7 As shown, the lower end face of the movable block 811 is rotatably connected to a second elastic telescopic plate 816. The end of the second elastic telescopic plate 816 away from the movable block 811 is rotatably connected to the lower end face of the inner support block 810. The lower end face of the slider 813 is rotatably connected to a first elastic telescopic plate 815. The first elastic telescopic plate 815 is rotatably connected to the lower end face of the center block 809. When the inner support block 810 and the center block 809 move, the first elastic telescopic plate 815 and the second elastic telescopic plate 816 can pull the movable block 811 and the slider 813 to move synchronously.

[0030] In this embodiment, as Figure 7 and Figure 8 As shown, both the first elastic telescopic plate 815 and the second elastic telescopic plate 816 include a hollow plate 8001 and an extension plate 8002. The extension plate 8002 is slidably connected through the hollow plate 8001. A second spring 8003 is fixedly connected between the extension plate 8002 and the hollow plate 8001. When the extension plate 8002 slides into or out of the hollow plate 8001, it will simultaneously compress or stretch the second spring 8003.

[0031] In this embodiment, as Figure 4 As shown, a support frame 801 is fixedly connected to the upper end face of the workbench 1. A drive motor 802 is fixedly connected to the upper end face of the support frame 801. A drive shaft 803 is fixedly connected to the output end of the drive motor 802. A transmission gear 804 is fixedly connected to the lower end of the drive shaft 803. A ring rack 805 is meshed on one side of the transmission gear 804. The ring rack 805 is fixedly connected to the outer surface of the ring plate 806. When the drive motor 802 is turned on and the transmission gear 804 is rotated through the drive shaft 803, the transmission gear 804 will push the ring rack 805 to drive the ring plate 806 to slide in the ring groove 13.

[0032] Compared with existing technologies, this method can simultaneously limit and fix the inner and outer rings of the bearing before spraying, so that the nozzle 10 can enter the bearing raceway to spray fluorescent agent. This not only ensures uniform spraying according to preset parameters and trajectory, preventing uneven spraying of fluorescent agent due to bearing shaking or displacement, but also avoids local accumulation or lack of fluorescent agent, forming a uniform coating layer of fluorescent agent on the raceway surface. Furthermore, the limiting and fixing method can prevent the bearing from rotating or moving during the spraying process, ensuring that the nozzle 10 can accurately reach all parts of the raceway and spray the entire circumference of the raceway. This prevents the phenomenon of some raceway areas not being sprayed due to bearing movement, thus ensuring the integrity of the spraying.

[0033] The overall working process and principles involved in the above embodiments are as follows: It should be noted that the end of the delivery pipe 6 away from the connecting block 5 is fixedly connected to the fluorescent agent storage tank, and the fluorescent agent is delivered into the delivery pipe 6 through the pump body, and then sprayed out through the spray pipe 9 and the nozzle 10.

[0034] When the staff needs to perform a spray coating test on the bearing raceway, first place the outer and inner rings of the bearing at the center of the upper end face of the test bench 2, then turn the knob 807 to drive the threaded rod 808 to rotate. Since the outer surface of the threaded rod 808 is threadedly connected to a centering block 809 and an inner support block 810, and the centering block 809 and the inner support block 810 are slidably connected in two vertical grooves 12 respectively, as the threaded rod 808 rotates, it can drive the centering block 809 and the inner support block 810 to move synchronously in the vertical grooves. Sliding within 12, as the centering block 809 moves, the centering block 809 will pull one end of the two first elastic telescopic plates 815 connected to the lower end face to move synchronously, and through the first elastic telescopic plates 815, pull the two sliders 813 on both sides to slide closer to each other in the transverse groove 11, causing the arc-shaped limiting block 814 connected to the side wall of the slider 813 to move and fit against the surface of the outer ring of the bearing, and under the influence of the arc-shaped limiting block 814, the outer ring will be pushed to move to the center of the upper end face of the detection table 2; As the inner support block 810 moves, it drives the two second elastic telescopic plates 816 connected to its lower end face to move synchronously. The second elastic telescopic plates 816 push the moving block 811 to slide away from each other within the transverse groove 11, causing the roller 812 connected to the upper end face of the moving block 811 to move and fit against the inner wall of the bearing inner ring, supporting the bearing inner ring. Simultaneously, it pushes the bearing inner ring to the center of the upper end face of the inspection table 2. This allows for simultaneous positioning and fixing of the bearing's inner and outer rings before spraying, facilitating the entry of the spray nozzle 10 into the bearing raceway. The fluorescent agent is sprayed onto the raceway surface. This not only ensures uniform spraying according to preset parameters and trajectory, preventing uneven spraying due to bearing shaking or displacement, but also avoids localized accumulation or absence of fluorescent agent. This results in a uniform coating layer of fluorescent agent on the raceway surface. Furthermore, the limiting and fixing mechanism prevents the bearing from rotating or moving during the spraying process, ensuring that the nozzle 10 can accurately reach all parts of the raceway and spray the entire circumference of the raceway. This prevents any unsprayed areas of the raceway due to bearing movement, thus ensuring the integrity of the spraying. During the process of fixing the inner and outer rings of the bearing by the rollers 812 and the arc-shaped limiting block 814 respectively, after one of the rollers 812 or the arc-shaped limiting block 814 has finished fixing the inner or outer ring, as the centering block 809 and the inner support block 810 continue to move, the extension plate 8002 provided on the first elastic telescopic plate 815 or the second elastic telescopic plate 816 will slide out or slide into the hollow plate 8001, stretching or compressing the second spring 8003 until the inner and outer rings of the bearing are completely fixed. Automatic adjustment is then performed to adapt to different sizes. When the bearing is being inspected, the second spring 8003 can not only expand and contract according to the actual size of the bearing, causing the extension plate 8002 to slide within the hollow plate 8001, thereby automatically adjusting the range of the limiting and fixing, ensuring that it can closely fit the inner and outer rings of various sizes of bearings and achieve precise positioning, but also, because this limiting and fixing structure can adapt to bearings of various sizes and shapes, the same set of equipment can be used for fluorescent agent spraying and testing of different types of bearings, without the need to equip each bearing with a special limiting device, thereby further improving the versatility and utilization of the equipment and reducing the equipment investment cost of enterprises; After the inner and outer rings of the bearing placed on the upper end face of the testing table 2 are fixed, the operator can pull the pull plate 707 according to the raceway of the inner and outer rings. This will cause the locking pin 708 to slide out from one of the locking holes 706 on the outer surface of the fixing pin 704. At the same time, the first spring 709 connected between the pull plate 707 and the lifting block 705 will be pulled. After the locking pin 708 has completely slid out from the locking hole 706, the operator can lift the pull plate 707 upwards and use the locking pin 708 to move the lifting block 705. The outer surface of the fixed column 704 slides upward synchronously. During the process on the lifting block 705, since both sides of the lifting block 705 are rotatably connected to the connecting plate 703, and the end of the connecting plate 703 away from the lifting block 705 is rotatably connected to the side wall of the fixed plate 702, and the fixed plate 702 is connected to the outer surface of the spray pipe 9, and the spray pipe 9 is connected to the telescopic tube 701, as the lifting block 705 rises, the lifting block 705 will drive the lower end of the connecting plate 703 to rise synchronously, so that the connecting plate 703 moves from an inclined position to a horizontal position. During the change of state of the connecting plate 703, the connecting plate 703 will push the fixing plate 702 away from the fixing post 704, and drive the two spray pipes 9 to move away from each other. This allows the nozzle 10 connected to the lower end of the spray pipe 9 to descend vertically into the bearing raceway below to spray fluorescent agent. This not only ensures that the fluorescent agent evenly covers the raceways of bearings of different sizes, but also prevents fluorescent agent accumulation for small bearings and prevents some areas from being uncovered due to insufficient spraying for large bearings. This ensures that the fluorescent agent is evenly distributed on each bearing raceway, providing more accurate and reliable data for subsequent testing. Moreover, the nozzle 10 can descend into the bearing raceway to spray, allowing the fluorescent agent to penetrate into every corner of the raceway, including areas that are difficult to reach with traditional spraying methods. This ensures that all raceway areas that need to be tested are covered with fluorescent agent, reducing the possibility of missed detections. Furthermore, the nozzle 10 can be adapted to the testing needs of bearings of different sizes without the need to replace it, thereby improving the versatility and utilization of the nozzle 10 and reducing the equipment investment cost for enterprises. Once the nozzle 10 position is adjusted, the operator can maintain the height of the pull plate 707 while releasing it. The rebound force of the first spring 709 connecting the pull plate 707 and the lifting block 705 will pull the pull plate 707 closer to the lifting block 705, causing the locking post 708 to slide back into the lifting block 705. This allows the locking post 708 to engage with the locking hole 706 on the outer surface of the fixing post 704, fixing the position of the lifting block 705. Because the position of the lifting block 705 is limited, the lifting block 705 can pass through the connecting plate 703, the fixing plate 702, and the spray pipe 9. Fixing the position of the nozzle 10 not only effectively prevents the nozzle 10 from moving accidentally in the horizontal direction, ensuring that the nozzle 10 always stays in the adjusted and precise position, so that the fluorescent agent can be sprayed stably and accurately onto the designated area of ​​the bearing raceway, but also the stable position of the nozzle 10 is the key to obtaining a uniform spraying effect. When the position of the nozzle 10 is fixed, the spraying angle, range and flow rate of the fluorescent agent can be kept consistent, avoiding the problem of uneven spraying caused by the shaking or deviation of the nozzle 10, such as local accumulation of fluorescent agent or insufficient coverage, thereby improving the uniformity of fluorescent agent distribution on the bearing raceway surface. After the nozzle 10 is positioned, the operator can open the electric telescopic column 4, push the connecting block 5, and lower the spray pipe 9, so that the nozzle 10 connected to the lower end of the spray pipe 9 descends into the bearing raceway fixed on the upper surface of the testing table 2. When it is necessary to spray the fluorescent agent into the bearing raceway through the delivery pipe 6, spray pipe 9, telescopic pipe 701, and nozzle 10, the operator simultaneously opens the drive motor 802, driving the drive shaft 803 to rotate, so that the transmission gear 804 connected to the lower end of the drive shaft 803 rotates synchronously. Because the transmission gear 804 passes through... The annular rack 805 and the annular plate 806 are meshed and connected. The annular plate 806 is slidably connected in the annular groove 13 and is fixedly connected to the lower end face of the detection table 2. Therefore, during the rotation of the transmission gear 804, the transmission gear 804 will push the annular plate 806 to slide in the annular groove 13 through the annular rack 805, and at the same time drive the detection table 2 to rotate. As the detection table 2 rotates, the detection table 2 will drive the bearing to rotate synchronously, thereby changing the position of the bearing raceway during the spraying of fluorescent agent by the nozzle 10, so that the fluorescent agent can be evenly sprayed to all parts of the raceway.

[0035] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for testing the wear performance of motor bearings, comprising a workbench (1), a gantry frame (3) fixedly connected to the upper end face of the workbench (1), an electric telescopic column (4) fixedly connected to the lower end face of the gantry frame (3), a connecting block (5) fixedly connected to the end of the electric telescopic column (4) away from the gantry frame (3), a conveying pipe (6) fixedly connected through one side of the connecting block (5), spraying pipes (9) fixedly connected to both sides of the gantry frame (3), and a nozzle (10) fixedly connected to the end of each spraying pipe (9) away from the connecting block (5), wherein the conveying pipe (6) and the spraying pipe (9) are connected in communication, characterized in that, It also includes a spray gap adjustment mechanism and a bearing limiting mechanism; The spray gap adjustment mechanism includes symmetrically arranged telescopic tubes (701), all of which are fixedly connected to the spray tube (9). The spray gap adjustment mechanism is used to adjust the position of the nozzle (10) according to the position of the bearing raceway. The bearing limiting mechanism is used to limit the bearing before the bearing is sprayed and inspected.

2. The device for detecting wear performance of motor bearings according to claim 1, characterized in that, The spray gap adjustment mechanism also includes a fixed column (704), which is fixedly connected to the lower end face of the connecting block (5). A lifting block (705) is slidably connected to the outer surface of the fixed column (704). A connecting plate (703) is rotatably connected to both sides of the lifting block (705). A fixed plate (702) is rotatably connected to the side of the connecting plate (703) away from the lifting block (705). The fixed plates (702) are all fixedly connected to the outer surface of the spray pipe (9).

3. The device for detecting wear performance of motor bearings according to claim 2, characterized in that, The outer surface of the fixed column (704) is provided with equidistant locking holes (706), and the lifting block (705) is slidably connected with a locking column (708). The locking column (708) and the locking hole (706) are locked together. The end of the locking column (708) away from the locking hole (706) is fixedly connected with a pull plate (707).

4. The device for detecting wear performance of motor bearings according to claim 3, characterized in that, The pull plate (707) is fixedly connected to the side of the lifting block (705) with a first spring (709). The side of the first spring (709) away from the pull plate (707) is fixedly connected to the side wall of the lifting block (705). The first spring (709) is sleeved on the outer surface of the locking post (708).

5. The device for detecting wear performance of motor bearings according to claim 1, characterized in that, The bearing limiting mechanism includes an annular plate (806), which is located on the upper surface of the workbench (1). An annular groove (13) is provided on the upper surface of the workbench (1). The annular plate (806) is slidably connected in the annular groove (13). A detection table (2) is fixedly connected to the upper surface of the annular plate (806). A horizontal groove (11) is provided on the upper surface of the detection table (2). A vertical groove (12) is symmetrically provided on the upper surface of the detection table (2). A moving block (811) and a slider (813) are symmetrically slidably connected in the horizontal groove (11). A roller (812) is rotatably connected to the upper surface of the moving block (811). An arc-shaped limiting block (814) is fixedly connected to the side of the slider (813) near the moving block (811).

6. The device for detecting the wear performance of motor bearings according to claim 5, characterized in that, A centering block (809) and an inner support block (810) are slidably connected in the vertical groove (12). A threaded rod (808) is threadedly connected between the centering block (809) and the inner support block (810). The threaded rod (808) is rotatably connected to the testing table (2). A knob (807) is fixedly connected to one end of the threaded rod (808) through the testing table (2).

7. The device for detecting wear performance of motor bearings according to claim 6, characterized in that, The lower end face of each movable block (811) is rotatably connected to a second elastic telescopic plate (816), and the end of the second elastic telescopic plate (816) away from the movable block (811) is rotatably connected to the lower end face of the inner support block (810). The lower end face of each slider (813) is rotatably connected to a first elastic telescopic plate (815), and the first elastic telescopic plate (815) is rotatably connected to the lower end face of the center block (809).

8. The device for detecting wear performance of motor bearings according to claim 7, characterized in that, The first elastic telescopic plate (815) and the second elastic telescopic plate (816) both include a hollow plate (8001) and an extension plate (8002). The extension plate (8002) is slidably connected through the hollow plate (8001). A second spring (8003) is fixedly connected between the extension plate (8002) and the hollow plate (8001).

9. The device for detecting the wear performance of motor bearings according to claim 5, characterized in that, A support frame (801) is fixedly connected to the upper end face of the workbench (1). A drive motor (802) is fixedly connected to the upper end face of the support frame (801). A drive shaft (803) is fixedly connected to the output end of the drive motor (802). A transmission gear (804) is fixedly connected to the lower end of the drive shaft (803). A ring rack (805) is meshed on one side of the transmission gear (804). The ring rack (805) is fixedly connected to the outer surface of the ring plate (806).

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