Insulation structure for preventing shaft current generation of motor and process method

Abstract

The invention discloses an insulation structure for preventing shaft current generation of a motor and a process method, and relates to the technical field of motor shaft insulation, the insulation structure comprises a rotating assembly, the rotating assembly is used for rotating along inner and outer rings of a bearing, the rotating assembly is arranged in an upper box body, the rotating assembly comprises a rotating motor, and the output end of the rotating motor is fixedly connected with a rotating disc; a small motor is fixedly connected to the rotating disc, and the output end of the small motor is fixedly connected with a lead screw. According to the invention, the motor bearing is embedded and assembled in the middle of the bearing sleeve, and the assembled shaft connecting assembly is assembled on the motor bearing; and the circular insulating plate, the first strip-shaped insulating plate and the second strip-shaped insulating plate are made of epoxy glass cloth plate insulating materials, so that shaft current can be effectively prevented from being generated, the reliability of the motor is improved, the service life of the motor is prolonged, and the motor is unlikely to be affected with damp and is not influenced by the use environment of the motor.

Description

Technical Field

[0001] The present invention relates to the technical field of motor shaft insulation, and particularly to an insulation structure and a process method for preventing shaft current generation in a motor. Background Art

[0002] During the operation of a motor, due to various reasons (such as harmonic components of the power supply voltage, the influence of surrounding high-voltage equipment, static charge accumulation caused by complex wiring, etc.), a potential difference, i.e., shaft voltage, may be generated between the two ends of the rotating shaft or between the shaft and the bearing. When the shaft voltage is relatively high, or the oil film is not stably formed at the moment of motor startup, the shaft voltage will break down the lubricating oil film to form a path, thereby generating shaft current. The shaft current is extremely harmful to the motor. It will generate high temperatures on the inner ring, outer ring, or balls of the bearing, causing melting in a small area and forming grooves, and then generating noise and vibration. In severe cases, it may even cause bearing failure, affecting the normal operation of production.

[0003] For example, in Chinese Patent Grant Publication No. CN115261765A, an insulating coating for a traction motor bearing and its spraying method. An insulating coating for a traction motor bearing includes a metal-based bottom layer and a composite alumina insulating coating; the metal-based bottom layer is formed by a plasma spraying process, with a thickness of 40μm - 100μm and a porosity of 2 - 3%. The insulating coating for a traction motor bearing and its preparation method disclosed in the present invention optimize the spraying process. The prepared alumina composite coating with a metal-based bottom layer, combined with secondary sealing operation, grinding operation, and large fillet design, makes the coating have high bonding strength, environmental adaptability, impact resistance, and good insulating performance. However, during the operation of the motor, due to the imbalance of the magnetic field in the magnetic circuit, a potential difference is generated between the two ends of the rotating shaft or between the rotating shaft and the bearing, thereby causing damage to the motor. Moreover, when spraying the motor bearing, the circular diameter required for spraying the outer ring and the inner ring cannot be adjusted, and the effect of spraying the insulating coating on the motor bearing is poor. Summary of the Invention

[0004] The purpose of the present invention is to provide an insulation structure and a process method for preventing shaft current generation in a motor, to solve the problems that during the operation of the motor, due to the imbalance of the magnetic field in the magnetic circuit, a potential difference is generated between the two ends of the rotating shaft or between the rotating shaft and the bearing, thereby causing damage to the motor, the position cannot be adjusted according to the inner ring and the outer ring of the motor bearing, and the effect of spraying the insulating coating on the motor bearing is poor.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] An insulation structure for preventing shaft current generation in a motor, including a rotating assembly, the rotating assembly is used to rotate along the inner and outer rings of the bearing, the rotating assembly is arranged in the upper box body, and the rotating assembly includes

[0007] Rotate the motor. The output end of the rotating motor is fixedly connected to a turntable, and a small motor is fixedly connected to the turntable. The output end of the small motor is fixedly connected to a lead screw. At the same time, a sliding block is threadedly connected to the lead screw. A chute is provided on the turntable, and the sliding block is slidably connected in the chute;

[0008] A storage tank for storing insulating paint. One side of the storage tank is fixedly connected to a liquid pump, and one end of the liquid pump is fixedly connected to a transfer pipe. A feeding hole is provided on the storage tank, and the feeding hole is used to add insulating paint into the storage tank.

[0009] As a further solution of the present invention: The small motor is arranged in a groove on the turntable. The lead screw passes through and is rotatably connected to the middle of the turntable. The rotating motor is fixedly connected to one side of the upper box body, and the output end of the rotating motor passes through and is rotatably connected to one side of the upper box body.

[0010] As a further solution of the present invention: The upper box body is fixedly connected to a lower box body. A through hole is provided at the connection between the upper box body and the lower box body. The lower box body is fixedly connected to an upper connecting plate, and air drying fans are arranged on both sides inside the upper connecting plate.

[0011] As a further solution of the present invention: The lower surface of the upper box body is fixedly installed with support legs. At the same time, there are four groups of support legs arranged around the lower surface of the upper box body. The upper connecting plate is internally communicated with the lower box body.

[0012] As a further solution of the present invention: An adjustment component is installed on the sliding block. The adjustment component includes

[0013] A fixed block fixedly connected to the sliding block. An electric push rod is fixedly connected inside the fixed block. The side of the electric push rod away from the fixed block is fixedly connected to an extension rod. One side of the extension rod is fixedly connected to a driving motor 1. At the same time, the output end of the driving motor 1 is fixedly connected to a spray head, and spray holes are provided on one side of the spray head.

[0014] As a further solution of the present invention: The output end of the driving motor 1 passes through and is rotatably connected to one side of the extension rod. The extension rod is slidably connected inside the fixed block. There are multiple spray holes arranged in a ring on one side of the spray head. At the same time, one side of the spray head is connected to the side of the transfer pipe away from the liquid pump.

[0015] As a further solution of the present invention: Limit components are installed on both sides of the lower box body. The limit components include

[0016] A hydraulic cylinder is fixedly connected to one side of the lower box body. The output end of the hydraulic cylinder is fixedly connected with a telescopic shaft. A connecting shaft is slidably connected inside the telescopic shaft. A connecting frame is fixedly connected to the side of the connecting shaft away from the telescopic shaft. A driving motor two is fixedly connected to the connecting frame. The output end of the driving motor two is fixedly connected with a clamping wheel. A connecting hole two is arranged on the connecting shaft, and a connecting hole one is arranged on the telescopic shaft.

[0017] A connecting pin is arranged in the connecting hole one and the connecting hole two, and the connecting pin is used to connect the telescopic shaft and the connecting shaft together.

[0018] As a further scheme of the present invention: the clamping wheel is arranged in the middle of the connecting frame. The output end of the driving motor two penetrates and is rotatably connected to the middle of the connecting frame. The telescopic shaft penetrates and is slidably connected to one side of the lower box body.

[0019] As a further scheme of the present invention: it further includes a shaft connection assembly. The shaft connection assembly includes a bearing sleeve, and the bearing sleeve is used to connect with a bearing;

[0020] A circular insulating plate is used to insulate and protect the inner ring of the bearing sleeve;

[0021] A hoop is used to clamp and limit the circular insulating plate;

[0022] A first strip-shaped insulating plate is used to insulate and protect the outer circular surface of the circular insulating plate;

[0023] A second strip-shaped insulating plate is used to lock the first strip-shaped insulating plate to prevent it from falling off.

[0024] The present invention also discloses a process method for preventing shaft current generation in a motor, including the following steps:

[0025] Step one: Place the bearing to be coated with insulating paint in the lower box body. Set two groups of limiting components. The two groups of limiting components clamp and limit the bearing and drive the bearing to rotate;

[0026] Step two: Adjust the inner and outer rings of the bearing by setting a rotating component. Set an adjusting component. The adjusting component drives the nozzle to adjust the height and angle. Set a liquid pump to spray insulating paint on the inner ring or outer ring surface of the bearing. After spraying, set an air-drying fan to blow and dry;

[0027] Step three: Place the bearing sleeve on the workbench, and assemble the circular insulating plate, the hoop, the first strip-shaped insulating plate, and the second strip-shaped insulating plate on the bearing sleeve;

[0028] Step four: Connect the bearing sprayed with insulating paint to the assembled shaft connection assembly.

[0029] Advantages of the present invention:

[0030] (1) In the present invention, the motor bearing is inlaid and assembled in the middle of the bearing sleeve, the assembled shaft connection assembly is assembled on the motor bearing, and then the end cover is installed on the bearing sleeve and fastened to the frame mounting hole on the stator. Moreover, the circular insulating plate, the first strip-shaped insulating plate, and the second strip-shaped insulating plate are made of epoxy glass cloth board insulating material, which can effectively prevent the generation of shaft current, improve the reliability and service life of the motor, is not easily affected by moisture, and is not affected by the motor's operating environment;

[0031] (2) By setting the rotating assembly and the adjusting assembly in the present invention, the spraying can be moved and adjusted according to the outer ring or inner ring of the motor bearing, and can be adjusted according to the appropriate height and angle, so that it is more convenient to adjust when spraying the insulating paint on the motor bearing and can adjust the spraying of the inner ring and the outer ring;

[0032] (3) By setting the hydraulic cylinder in the present invention, the output end of the hydraulic cylinder drives the telescopic shaft, the connecting shaft, the connecting frame, and the clamping wheel to move inward to clamp the motor bearing in the middle. A second driving motor is set, the output end of the second driving motor drives the clamping wheel to rotate, and the clamping wheel drives the motor bearing to rotate, so that the motor bearing can rotate while being clamped and limited, thereby enhancing the effect of spraying the insulating paint. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below with reference to the accompanying drawings.

[0034] Figure 1 is a three-dimensional structure schematic diagram of the insulating structure for preventing shaft current generation in the motor of the present invention Figure I ;

[0035] Figure 2 is a three-dimensional structure schematic diagram of the insulating structure for preventing shaft current generation in the motor of the present invention Figure II ;

[0036] Figure 3 is a three-dimensional structure schematic diagram of the rotating assembly of the present invention;

[0037] Figure 4 is a component disassembly structure schematic diagram of the adjusting assembly of the present invention;

[0038] Figure 5 is Figure 4 an enlarged view of part A in

[0039] Figure 6 is a component disassembly structure schematic diagram of the limiting assembly of the present invention;

[0040] Figure 7 is a three-dimensional structure schematic diagram of the shaft connection assembly of the present invention;

[0041] Figure 8 It is an exploded view of the shaft connection assembly of the present invention.

[0042] In the figure: 1. Upper box body; 2. Lower box body; 3. Rotating assembly; 4. Adjusting assembly; 5. Limiting assembly; 6. Through hole; 7. Support leg; 8. Shaft connection assembly; 9. Upper connecting plate; 10. Air drying fan; 300. Turntable; 301. Rotating motor; 302. Small motor; 303. Sliding block; 304. Lead screw; 305. Storage box; 306. Liquid pump; 307. Transfer pipe; 308. Feeding hole; 309. Chute; 400. Fixed block; 401. Electric push rod; 402. Extension rod; 403. Driving motor 1; 404. Nozzle; 405. Spray hole; 500. Hydraulic cylinder; 501. Telescopic shaft; 502. Connecting shaft; 503. Connecting hole 1; 504. Connecting hole 2; 505. Connecting pin; 506. Connecting frame; 507. Driving motor 2; 508. Clamping wheel; 801. Bearing sleeve; 802. Circular insulating plate; 803. Hoop; 804. First strip-shaped insulating plate; 805. Second strip-shaped insulating plate. Detailed implementation manners

[0043] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1 - 8 As shown, the present invention is an insulation structure for preventing shaft current generation in a motor, including a rotating assembly 3 for rotating along the inner and outer rings of a bearing. The rotating assembly 3 is arranged in the upper box body 1 and includes

[0045] a rotating motor 301, the output end of the rotating motor 301 is fixedly connected to a turntable 300, and a small motor 302 is fixedly connected to the turntable 300. Moreover, the output end of the small motor 302 is fixedly connected to a lead screw 304. At the same time, a sliding block 303 is threadedly connected to the lead screw 304. A chute 309 is arranged on the turntable 300, and the sliding block 303 is slidably connected in the chute 309;

[0046] a storage box 305 for storing insulation paint. A liquid pump 306 is fixedly connected to one side of the storage box 305, and one end of the liquid pump 306 is fixedly connected to a transfer pipe 307. A feeding hole 308 is arranged on the storage box 305, and the feeding hole 308 is used for adding insulation paint into the storage box 305.

[0047] It should be noted that the transmission pipe 307 is made of flexible hose material for easy adjustment following movement, and the length of the chute 309 is less than the radius length of the turntable 300 to avoid interference during movement.

[0048] In the present invention, preferably, the small motor 302 is disposed in the groove on the turntable 300, the lead screw 304 penetrates and is rotatably connected to the middle of the turntable 300, the rotating motor 301 is fixedly connected to one side of the upper box body 1, and the output end of the rotating motor 301 penetrates and is rotatably connected to one side of the upper box body 1.

[0049] In the present invention, preferably, a lower box body 2 is fixedly connected to the upper box body 1, a through hole 6 is provided at the connection between the upper box body 1 and the lower box body 2, an upper connecting plate 9 is fixedly connected to the lower box body 2, and air drying fans 10 are provided on both sides inside the upper connecting plate 9.

[0050] It should be noted that the air drying fans 10 communicate with the inside of the lower box body 2, and the air drying fans 10 are electrically connected to dry the bearings inside the lower box body 2, and the diameter of the through hole 6 is larger than the diameter of the turntable 300.

[0051] In the present invention, preferably, the lower surface of the upper box body 1 is fixedly provided with support legs 7. At the same time, there are four groups of support legs 7 and they are arranged around the lower surface of the upper box body 1, and the upper connecting plate 9 communicates with the inside of the lower box body 2.

[0052] It should be noted that the support legs 7 are used to support the upper box body 1, and both the upper box body 1 and the lower box body 2 are provided with box doors, so that the upper box body 1 can be protected from paint spraying during spraying.

[0053] In the present invention, preferably, an adjustment assembly 4 is installed on the sliding block 303, and the adjustment assembly 4 includes

[0054] a fixed block 400. The fixed block 400 is fixedly connected to the sliding block 303. An electric push rod 401 is fixedly connected inside the fixed block 400, and an extension rod 402 is fixedly connected to the side of the electric push rod 401 away from the fixed block 400. And a driving motor 403 is fixedly connected to one side of the extension rod 402. At the same time, the output end of the driving motor 403 is fixedly connected to a nozzle 404, and a spray hole 405 is provided on one side of the nozzle 404.

[0055] In the present invention, preferably, the output end of the driving motor 403 penetrates and is rotatably connected to one side of the extension rod 402, and the extension rod 402 is slidably connected inside the fixed block 400. A plurality of spray holes 405 are arranged in a ring on one side of the nozzle 404, and at the same time, one side of the nozzle 404 is connected to the side of the transmission pipe 307 away from the liquid pump 306.

[0056] It should be noted that the liquid pump 306 is electrically connected, and the liquid pump 306 can provide a stable liquid conveying force.

[0057] In the present invention, preferably, limiting components 5 are installed on both sides of the lower box body 2. The limiting component 5 includes

[0058] a hydraulic cylinder 500. The hydraulic cylinder 500 is fixedly connected to one side of the lower box body 2. The output end of the hydraulic cylinder 500 is fixedly connected with a telescopic shaft 501. A connecting shaft 502 is slidably connected inside the telescopic shaft 501. A connecting frame 506 is fixedly connected to the side of the connecting shaft 502 away from the telescopic shaft 501. A second driving motor 507 is fixedly connected to the connecting frame 506. The output end of the second driving motor 507 is fixedly connected with a clamping wheel 508. A second connecting hole 504 is provided on the connecting shaft 502, and a first connecting hole 503 is provided on the telescopic shaft 501;

[0059] a connecting pin 505. The connecting pin 505 is arranged in the first connecting hole 503 and the second connecting hole 504, and the connecting pin 505 is used to connect the telescopic shaft 501 and the connecting shaft 502 together.

[0060] It should be noted that the connecting pin 505 is made of solid iron material and can be used for a long time and is coated with an anti-rust coating to reduce rusting.

[0061] In the present invention, preferably, the clamping wheel 508 is arranged in the middle of the connecting frame 506. The output end of the second driving motor 507 penetrates and is rotatably connected to the middle of the connecting frame 506. The telescopic shaft 501 penetrates and is slidably connected to one side of the lower box body 2.

[0062] It should be noted that the material of the clamping wheel 508 is rubber material, so that the clamping wheel 508 can better contact with the bearing and better promote rotation. Its rotation motor 301, small motor 302, liquid pump 306, first driving motor 403, hydraulic cylinder 500, and second driving motor 507 are all coordinately controlled by wireless signal transmission of a controller (not shown).

[0063] In the present invention, preferably, it further includes a shaft connection component 8. The shaft connection component 8 includes a bearing sleeve 801, and the bearing sleeve 801 is used to connect with the bearing;

[0064] a circular insulating plate 802, and the circular insulating plate 802 is used for insulating protection of the inner ring of the bearing sleeve 801;

[0065] a hoop 803, and the hoop 803 is used for clamping and limiting the circular insulating plate 802;

[0066] a first strip-shaped insulating plate 804, and the first strip-shaped insulating plate 804 is used for insulating protection of the outer circular surface of the circular insulating plate 802;

[0067] a second strip-shaped insulating plate 805, and the second strip-shaped insulating plate 805 is used for locking the first strip-shaped insulating plate 804 to prevent it from falling off.

[0068] It should be noted that the circular insulating plate 802, the first strip-shaped insulating plate 804, and the second strip-shaped insulating plate 805 are made of 3240 epoxy glass cloth board insulating material with a thickness of 0.5 mm / 1.0 mm. They have good insulation performance and mechanical strength, can withstand the long-term operating pressure of the motor, and have a relatively low cost.

[0069] The present invention also discloses a process method for preventing shaft current generation in a motor, including the following steps;

[0070] Step 1: Place the bearing to be coated with insulating paint in the lower box body 2, and set two groups of limiting components 5. The two groups of limiting components 5 clamp and limit the bearing and drive the bearing to rotate;

[0071] Step 2: Adjust the inner and outer rings of the bearing by setting the rotating component 3. Set the adjusting component 4. The adjusting component 4 drives the spray head 404 to adjust the height and angle. Set the liquid pump 306 to spray insulating paint on the inner ring or outer ring surface of the bearing. After spraying is completed, set the air-drying fan 10 to blow and dry.

[0072] Step 3: Place the bearing sleeve 801 on the workbench, and assemble the circular insulating plate 802, the hoop 803, the first strip-shaped insulating plate 804, and the second strip-shaped insulating plate 805 on the bearing sleeve 801;

[0073] Step 4: Connect the bearing sprayed with insulating paint to the assembled shaft connection component 8.

[0074] The working principle of the present invention: First, place the motor bearing to be sprayed in the middle of the two clamping wheels 508 in the lower box body 2. Set the hydraulic cylinder 500. The output end of the hydraulic cylinder 500 drives the telescopic shaft 501, the connecting shaft 502, the connecting frame 506, and the clamping wheel 508 to move inward to clamp the motor bearing in the middle. Set the driving motor two 507. The output end of the driving motor two 507 drives the clamping wheel 508 to rotate, and the clamping wheel 508 drives the motor bearing to rotate;

[0075] The small motor 302 is arranged according to the position of the inner ring or outer ring of the motor bearing. The output end of the small motor 302 drives the lead screw 304 to rotate. The rotation of the lead screw 304 enables the sliding block 303 to move along the lead screw 304 and the chute 309 to adjust the position. The chute 309 drives the fixed block 400, the electric push rod 401, the extension rod 402, the driving motor 403, and the nozzle 404 to adjust according to the outer ring or inner ring of the motor bearing. The electric push rod 401 is arranged. The output end of the electric push rod 401 drives the extension rod 402 to move up or down along the fixed block 400 to adjust the height. The extension rod 402 drives the driving motor 403 and the nozzle 404 to adjust according to the height of the motor bearing. The driving motor 403 is arranged. The output end of the driving motor 403 drives the nozzle 404 to rotate along the extension rod 402 to adjust the angle according to the position of the motor bearing. The rotating motor 301 is arranged. The output end of the rotating motor 301 drives the turntable 300 to rotate. The turntable 300 drives the sliding block 303, the fixed block 400, the electric push rod 401, the extension rod 402, and the nozzle 404 to rotate. The liquid pump 306 is arranged. The liquid pump 306 sucks out the insulating paint in the storage tank 305 and finally sprays it on the outer ring or inner ring of the motor bearing through the transmission pipe 307 by the nozzle 404. After spraying, the air-drying fan 10 is arranged. The air-drying fan 10 blows on the motor bearing for air-drying;

[0076] Lay the bearing sleeve 801 flat on the workbench. Surround the outer surface of the bearing sleeve 801 with the first strip-shaped insulating board 804. The joint is firmly adhered with self-adhesive imide film to prevent it from opening due to tension. Then surround the outer surface of the first strip-shaped insulating board 804 with the second strip-shaped insulating board 805. Similarly, firmly adhere the joint with self-adhesive imide film. The joint between the second strip-shaped insulating board 805 and the first strip-shaped insulating board 804 is staggered by 180°. Put the circular insulating board 802 on the bearing sleeve 801 and make it abut against the end face of the bearing sleeve 801. Place the hoop 803 on the heater for heating. After heating, quickly place it on the bearing sleeve 801 and press the circular insulating board 802 tightly to prevent the circular insulating board 802 from falling off;

[0077] After assembly, inlay and assemble the motor bearing in the middle of the bearing sleeve 801. Assemble the assembled shaft connection assembly 8 on the motor bearing. Then install the end cover on the bearing sleeve 801 and fasten it to the seat mounting hole on the stator. In this way, an insulating bearing assembly insulating component with insulating properties is placed between the end cover and the motor shaft.

[0078] The above has described a specific embodiment of the present invention in detail, but the described content is only a preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. The insulation structure of the motor to prevent shaft current generation is characterized by: The invention comprises a rotating assembly (3), wherein the rotating assembly (3) is used to rotate along the inner and outer rings of the bearing, and the rotating assembly (3) is arranged in the upper housing (1). The rotating assembly (3) comprises A rotating motor (301), wherein the output end of the rotating motor (301) is fixedly connected to a rotating disk (300), and a small motor (302) is fixedly connected to the rotating disk (300), and a screw rod (304) is fixedly connected to the output end of the small motor (302), and a sliding block (303) is threadedly connected to the screw rod (304), and a sliding groove (309) is provided on the rotating disk (300), and the sliding block (303) is slidably connected in the sliding groove (309); A storage box (305) is used to store insulating paint. A liquid pump (306) is fixedly connected to one side of the storage box (305), and a transmission pipe (307) is fixedly connected to one end of the liquid pump (306). A feeding hole (308) is provided on the storage box (305), and the feeding hole (308) is used to add insulating paint to the inside of the storage box (305).

2. The insulation structure for preventing shaft current from being generated in a motor according to claim 1, characterized in that: The small motor (302) is arranged in a groove on the turntable (300), the screw rod (304) passes through and is rotatably connected to the middle of the turntable (300), the rotating motor (301) is fixedly connected to one side of the upper box (1), and the output end of the rotating motor (301) passes through and is rotatably connected to one side of the upper box (1).

3. The insulation structure for preventing shaft current from being generated in a motor according to claim 2, characterized in that: The upper box body (1) is fixedly connected to a lower box body (2); a through hole (6) is provided at the connection between the upper box body (1) and the lower box body (2); an upper connecting plate (9) is fixedly connected to the lower box body (2); and air-drying fans (10) are provided on both sides of the upper connecting plate (9).

4. The insulation structure for preventing shaft current from being generated in a motor according to claim 3, characterized in that: The lower surface of the upper box body (1) is fixedly mounted with support legs (7), and four groups of support legs (7) are arranged around the lower surface of the upper box body (1). The upper connecting plate (9) is in communication with the interior of the lower box body (2).

5. The insulation structure for preventing shaft current from being generated in a motor according to claim 4, characterized in that: The sliding block (303) is provided with an adjustment component (4), the adjustment component (4) comprising a fixed block (400), the fixed block (400) being fixedly connected to the sliding block (303), an electric push rod (401) being fixedly connected inside the fixed block (400), an extension rod (402) being fixedly connected to a side of the electric push rod (401) away from the fixed block (400), a drive motor (403) being fixedly connected to one side of the extension rod (402), a nozzle (404) being fixedly connected to an output end of the drive motor (403), and a nozzle (405) being provided on one side of the nozzle (404).

6. The insulation structure for preventing shaft current from being generated in a motor according to claim 5, characterized in that: The output end of the driving motor (403) passes through and is rotatably connected to one side of the extension rod (402), and the extension rod (402) is slidably connected to the fixed block (400). A plurality of spray holes (405) are provided and are arranged in a ring on one side of the spray head (404). At the same time, one side of the spray head (404) is connected to a side of the transmission pipe (307) away from the liquid pump (306).

7. The insulation structure for preventing shaft current from being generated in a motor according to claim 6, characterized in that: Limiting components (5) are installed on both sides of the lower box (2), and the limiting components (5) include A hydraulic cylinder (500), wherein the hydraulic cylinder (500) is fixedly connected to one side of the lower box (2), the output end of the hydraulic cylinder (500) is fixedly connected to a telescopic shaft (501), and a connecting shaft (502) is slidably connected inside the telescopic shaft (501), and a connecting frame (506) is fixedly connected to the side of the connecting shaft (502) away from the telescopic shaft (501), and a second driving motor (507) is fixedly connected to the connecting frame (506), and a clamping wheel (508) is fixedly connected to the output end of the second driving motor (507), and a second connecting hole (504) is provided on the connecting shaft (502), and a first connecting hole (503) is provided on the telescopic shaft (501); A connecting pin (505) is disposed in the first connecting hole (503) and the second connecting hole (504), and the connecting pin (505) is used to connect the telescopic shaft (501) and the connecting shaft (502) together.

8. The insulation structure for preventing shaft current from being generated in a motor according to claim 7, characterized in that: The clamping wheel (508) is arranged in the middle of the connecting frame (506), the output end of the second driving motor (507) passes through and is rotatably connected to the middle of the connecting frame (506), and the telescopic shaft (501) passes through and is slidably connected to one side of the lower box body (2).

9. The insulation structure for preventing shaft current from being generated in a motor according to claim 8, characterized in that: It also includes a shaft connection assembly (8), wherein the shaft connection assembly (8) includes a bearing sleeve (801), and the bearing sleeve (801) is used to be connected to a bearing; A circular insulating plate (802), wherein the circular insulating plate (802) is used to provide insulation protection for the inner ring of the bearing sleeve (801); A hoop (803), wherein the hoop (803) is used to clamp and limit the circular insulating plate (802); A first strip-shaped insulating plate (804), the first strip-shaped insulating plate (804) being used to provide insulation protection for the outer circular surface of the circular insulating plate (802); The second strip-shaped insulating plate (805) is used to lock the first strip-shaped insulating plate (804) to prevent it from falling off.

10. A process for preventing shaft current from being generated in a motor, characterized in that: The insulation structure for preventing shaft current from being generated in a motor according to any one of claims 1 to 9 comprises the following steps: Step 1: Place the bearing to be coated with insulating paint in the lower box (2), and set two sets of limit assemblies (5), which clamp and limit the bearing and rotate it; Step 2: by setting a rotating component (3) to adjust the inner and outer rings of the bearing, setting an adjusting component (4), the adjusting component (4) with a spray head (404) to adjust the height and angle, setting a liquid pump (306) to spray the insulating paint on the surface of the inner ring or outer ring of the bearing, and after the spraying is completed, setting a drying fan (10) to blow and dry; Step 3: Place the bearing sleeve (801) on a workbench, and assemble the circular insulating plate (802), the hoop (803), the first strip insulating plate (804), and the second strip insulating plate (805) on the bearing sleeve (801); Step 4: Connect the bearing tube sprayed with insulating paint to the assembled shaft connection component (8).

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