A waterproof protection structure for motor shaft bearing

Abstract

This application discloses a waterproof protection structure for a motor shaft bearing, relating to the field of bearings. It includes a motor end cover and a shaft coaxially mounted on the motor end cover. The motor end cover and the shaft are rotatably connected via a bearing. A sealing ring is provided on the shaft, located outside the motor end cover. A sealing cover is provided on the motor end cover, located outside the sealing ring. A waterproof cover is provided on the shaft, located outside both the sealing ring and the sealing cover. The beneficial effect of this application is that the multi-layered protective structure of the sealing ring, sealing cover, and waterproof cover significantly improves the waterproof performance of the motor shaft bearing. Whether it's minor splashes, a humid environment, or severe immersion, it effectively prevents water from entering the motor, protecting the bearing from water corrosion. This greatly reduces the risk of motor failure due to water and improves the reliability and stability of the motor.

Description

Technical Field

[0001] The present application relates to the field of bearings, and in particular to a waterproof protection structure for a motor shaft bearing. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machines. The motor shaft used with the motor is the output end of the motor and is used for the power connection and transmission of the motor.

[0003] Motors working outdoors or in humid environments are prone to water ingress and moisture in the internal panels of the motors due to prolonged exposure to rain, causing the motors to short-circuit and burn. Since the motor shaft extends from the motor cover, the sealing between the motor shaft and the motor cover is crucial. If the seal is not good and the motor is exposed to moisture or water, it will directly affect the wire ends and winding wires, causing the motor to short-circuit and burn, seriously affecting the service life of the motor.

[0004] In view of the defects in the above-mentioned related technologies, the present application proposes a waterproof protection structure for a motor shaft bearing. Summary of the invention

[0005] In order to improve the waterproof performance of a motor shaft bearing, the present application provides a motor shaft bearing waterproof protection structure.

[0006] The present application provides a motor shaft bearing waterproof protection structure adopts the following technical solution:

[0007] A waterproof protection structure for a motor shaft bearing comprises a motor end cover and a shaft coaxially arranged on the motor end cover, wherein the motor end cover and the shaft are rotatably connected via a bearing, a sealing ring is provided on the shaft, and the sealing ring is located on the outside of the motor end cover, a sealing cover is provided on the motor end cover, and the sealing cover is located on the outside of the sealing ring, and a waterproof cover is provided on the shaft, and the waterproof cover is located on the outside of the sealing ring and the sealing cover.

[0008] By adopting the above technical solution, when the motor is running, the shaft rotates at high speed under the support of the bearing. The sealing ring is tightly sleeved on the shaft and is located on the outside of the motor end cover. When water or other liquids approach the shaft, the sealing ring can prevent most of the liquid from directly entering the gap between the motor end cover and the shaft, reducing the risk of liquid erosion on the bearing. The sealing cover is installed on the motor end cover and is located on the outside of the sealing ring. The function of the sealing cover is to further enhance the waterproof protection effect. It cooperates with the sealing ring to form a relatively closed space to isolate the shaft from the external environment. Even if a small amount of liquid breaks through the defense line of the sealing ring, the sealing cover can also play a blocking role to prevent the liquid from continuing to penetrate into the motor. The waterproof cover is located on the outside of the sealing ring and the sealing cover and is sleeved on the shaft. Its main function is to provide additional waterproof protection on the outermost layer. When encountering harsh working environments, such as heavy rain, spraying or immersion, the waterproof cover can prevent a large amount of water from directly impacting the sealing ring and the sealing cover. At the same time, the waterproof cover can also prevent dust, debris, etc. from entering the sealing area, further improving the reliability of the waterproof protection structure.

[0009] Preferably, a first receiving groove for receiving the sealing ring is provided on the rotating shaft, a clamp is provided on the outer side of the sealing ring, a second receiving groove for receiving the clamp is provided on the sealing ring, and the clamp is used to press the sealing ring onto the rotating shaft.

[0010] By adopting the above technical solution, the sealing ring is placed in the first receiving groove on the rotating shaft. The size of the first receiving groove matches the sealing ring, which can ensure that the position of the sealing ring on the rotating shaft is relatively fixed and will not be easily displaced. When it is necessary to ensure the sealing between the sealing ring and the rotating shaft, the clamp is installed on the second receiving groove of the sealing ring. The clamp is gradually tightened by its own elasticity or by a fastening device. As the clamp is tightened, the clamp exerts radial pressure on the sealing ring. This pressure causes the sealing ring to be pressed against the rotating shaft, and the sealing ring undergoes elastic deformation to fill the gap between the sealing ring and the rotating shaft. Under the pressure of the clamp, the sealing ring fits tightly with the surface of the rotating shaft to form a good seal. This can effectively prevent impurities such as water and dust from entering the motor from the gap between the rotating shaft and the sealing ring.

[0011] Preferably, the rotating shaft is provided with limiting grooves on both sides of the sealing ring, limiting rings are provided in the limiting grooves, and the two limiting rings are respectively pressed against the two sides of the sealing ring.

[0012] By adopting the above technical solution, the sealing ring is installed at a specific position on the rotating shaft so that it is located between the two limit grooves, and the limit rings are respectively placed in the limit grooves on the rotating shaft. The size of the limit ring matches the limit groove, which can ensure that the position of the limit ring in the limit groove is relatively fixed, and when the motor is running, the rotating shaft rotates at high speed. In the axial direction, the two limit rings are respectively pressed against the two sides of the sealing ring, limiting the axial movement of the sealing ring. When the sealing ring is subjected to various forces during the operation of the motor, it will not be displaced along the axial direction of the rotating shaft, ensuring that the sealing ring is always in the correct working position and can continue to play the role of waterproofing and dustproofing.

[0013] Preferably, the sealing cover is provided with a plurality of through holes, bolts are passed through the through holes, the motor end cover is provided with screw holes, and the bolts are threadedly connected in the screw holes.

[0014] By adopting the above technical solution, the sealing cover is placed at a specific position of the motor end cover, so that the through holes on the sealing cover correspond to the screw holes on the motor end cover one by one, and a suitable bolt is selected, and the bolt is passed through the through hole on the sealing cover, and the bolt is rotated. Since the screw hole on the motor end cover is provided with a thread matching the bolt, the bolt is gradually screwed into the screw hole during the rotation process. As the bolt is continuously screwed in, the head of the bolt gradually presses the sealing cover, so that the gap between the sealing cover and the motor end cover is gradually reduced. By setting a through hole on the sealing cover and using the bolt to thread the screw hole on the motor end cover, the sealing cover can be firmly fixed and well sealed, ensuring the safe and reliable operation of the motor under various working conditions.

[0015] Preferably, the bolt is provided with an anti-loosening gear, the motor end cover is provided with a slot, an anti-loosening gear ring is clamped in the slot, and the anti-loosening gear ring is used to mesh with multiple anti-loosening gears at the same time.

[0016] By adopting the above technical solution, the bolts are passed through the through holes on the sealing cover and screwed into the screw holes on the motor end cover, and the bolts are gradually tightened to fix the sealing cover. At this time, the anti-loosening gear on the bolt is in a specific position as the bolt is installed, and the anti-loosening gear ring is placed in the slot on the motor end cover. The size of the slot matches the anti-loosening gear ring to ensure that the anti-loosening gear ring can be stably placed in the slot and will not move easily. After the anti-loosening gear ring is placed in the slot, its position is adjusted so that it can mesh with the anti-loosening gears on multiple bolts at the same time. During the operation of the motor, due to factors such as vibration, impact or temperature changes, the bolts may tend to loosen. However, when the anti-loosening gear ring meshes with the anti-loosening gears on multiple bolts, it will generate a reverse resistance to the bolts to prevent the bolts from loosening.

[0017] Preferably, an engagement groove is provided on the inner side of the sealing cover, the outer side of the sealing ring extends into the engagement groove, and the outer side of the sealing ring abuts against the bottom wall of the engagement groove.

[0018] By adopting the above technical solution, after the sealing ring is installed at the corresponding position on the rotating shaft, the sealing cover is installed on the motor end cover. As the sealing cover is installed, the outer side of the sealing ring gradually approaches the inner side of the sealing cover. When the sealing cover is installed in place, the outer side of the sealing ring extends into the bite groove inside the sealing cover. The outer side of the sealing ring abuts against the bottom wall of the bite groove, forming a close contact. This contact increases the sealing area and tightness, effectively preventing impurities such as water and dust from entering the motor from the connection between the sealing cover and the sealing ring.

[0019] Preferably, the sealing cover is provided with a plurality of drainage holes, the inlets of the drainage holes are communicated with the bite grooves, the outlets of the drainage holes are open, and the drainage holes are curved.

[0020] By adopting the above technical solution, when the motor is in an environment where liquid may come into contact, such as a humid environment, splashing water or short-term immersion in water, the liquid may enter the bite groove through the tiny gap between the sealing cover and other components. If a small amount of water or other liquid enters the bite groove between the sealing cover and the sealing ring, the liquid will gather in the bite groove due to gravity or the flow trend of the liquid. Since the inlet of the drain hole is connected to the bite groove and the drain hole is curved, the liquid will flow along the curved channel of the drain hole under the influence of gravity and capillary action. The curved design can prevent the liquid from easily flowing back into the bite groove without external force. The outlet of the drain hole is open, and the liquid is finally discharged to the outside of the motor through the open drain hole. This can effectively prevent the accumulation of liquid at the sealing cover and avoid damage to the shaft bearings and other components inside the motor. The curved drainage hole with an open outlet arranged in an annular shape on the sealing cover can discharge the liquid that may enter the bite groove in time, ensuring that the motor can still operate normally in a humid or liquid-contact environment, thereby improving the reliability of the waterproof protection structure of the motor shaft bearing.

[0021] Preferably, the sealing cover is provided with a brush, and the brush abuts against the sealing ring.

[0022] By adopting the above technical solution, when the motor is not running, the brush on the sealing cover gently abuts against the sealing ring, and the brush is in a stationary state. As the motor runs, the sealing ring may accumulate some dirt due to friction with the rotating shaft or the influence of the external environment. The brush can play a certain cleaning role in the process of abutting against the sealing ring. When the sealing ring rotates, the fibers of the brush will gently wipe the surface of the sealing ring, remove some dirt, and keep the sealing ring clean.

[0023] Preferably, a clamping block is connected to the rotating shaft in a radial sliding manner along the rotating shaft, a clamping groove for accommodating the clamping block is provided on the waterproof cover, a spring is provided between the clamping block and the rotating shaft, one end of the spring is connected to the clamping block, and the other end of the spring is connected to the rotating shaft, the spring is in a compressed state, and the spring causes the clamping block to have a tendency to slide toward the waterproof cover.

[0024] By adopting the above technical solution, the waterproof cover is installed at a specific position on the rotating shaft, so that the clamping groove on the waterproof cover corresponds to the clamping block on the rotating shaft. When the waterproof cover is installed in place, since the spring is in a compressed state, the spring will apply a continuous pressure to the clamping block, so that the clamping block has a tendency to slide in the direction of the waterproof cover. Under the action of the spring, the clamping block will slide into the clamping groove on the waterproof cover, thereby fixing the waterproof cover on the rotating shaft. This ensures that the waterproof cover will not fall off easily due to vibration, impact or other external forces during the operation of the motor, thereby ensuring the stability and reliability of the waterproof cover. In short, by arranging a slidable clamping block on the rotating shaft and using a spring to make the clamping block cooperate with the clamping groove on the waterproof cover, the waterproof cover can be firmly fixed, the waterproof performance can be enhanced, it can adapt to different working conditions, and the reliability of the waterproof protection structure of the motor shaft bearing can be improved.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] The multi-layer protection structure of the sealing ring, sealing cover and waterproof cover can significantly improve the waterproof performance of the motor shaft bearing. Whether it is a slight splash, a humid environment or a serious immersion, it can effectively prevent water from entering the motor and protect the bearing from water erosion. This greatly reduces the risk of motor failure caused by water and improves the reliability and stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the waterproof protection structure of an embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the overall structure of the motor end cover of an embodiment of the present application;

[0029] Figure 3 For the embodiments of this application Figure 1 Enlarged view of point A in the middle.

[0030] Reference numerals:

[0031] 1. Motor end cover; 2. Rotating shaft; 21. Clamp block; 22. Clamp groove; 23. Spring; 3. Bearing; 4. Sealing ring; 41. First accommodating groove; 42. Hoop; 43. Second accommodating groove; 44. Limiting groove; 45. Limiting ring; 46. Brush; 5. Sealing cover; 51. Through hole; 52. Bolt; 53. Screw hole; 54. Anti-loosening gear; 55. Slot; 56. Anti-loosening gear ring; 57. Occlusal groove; 58. Drain hole; 6. Waterproof cover. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] The present invention provides a waterproof protection structure for a motor shaft bearing, the structure of which is as follows: Figure 1 - Figure 3 As shown, it includes a motor end cover 1 and a rotating shaft 2 coaxially arranged on the motor end cover 1, the motor end cover 1 and the rotating shaft 2 are rotatably connected through a bearing 3, a sealing ring 4 is provided on the rotating shaft 2, and the sealing ring 4 is located on the outside of the motor end cover 1, a sealing cover 5 is provided on the motor end cover 1, and the sealing cover 5 is located on the outside of the sealing ring 4, and a waterproof cover is provided on the rotating shaft 2, and the waterproof cover is located on the outside of the sealing ring 4 and the sealing cover 5.

[0034] When in use, when the motor is running, the shaft 2 rotates at high speed under the support of the bearing 3. The sealing ring 4 is tightly sleeved on the shaft 2 and is located on the outside of the motor end cover 1. When water or other liquids approach the shaft 2, the sealing ring 4 can prevent most of the liquid from directly entering the gap between the motor end cover 1 and the shaft 2, reducing the risk of liquid erosion on the bearing 3. The sealing cover 5 is installed on the motor end cover 1 and is located on the outside of the sealing ring 4. The function of the sealing cover 5 is to further enhance the waterproof protection effect. It cooperates with the sealing ring 4 to form a relatively closed space to isolate the shaft 2 from the external environment. Even if a small amount of liquid breaks through the defense line of the sealing ring 4, the sealing cover 5 can also play a blocking role to prevent the liquid from continuing to penetrate into the motor. The waterproof cover is located on the outside of the sealing ring 4 and the sealing cover 5 and is sleeved on the shaft 2. Its main function is to provide additional waterproof protection on the outermost layer. When encountering harsh working environments, such as heavy rain, spraying or immersion, the waterproof cover can prevent a large amount of water from directly impacting the sealing ring 4 and the sealing cover 5. At the same time, the waterproof cover can also prevent dust, debris, etc. from entering the sealed area, further improving the reliability of the waterproof protection structure.

[0035] In the present invention, the multi-layer protection structure of the sealing ring 4, the sealing cover 5 and the waterproof cover can significantly improve the waterproof performance of the motor shaft 2 bearing 3. Whether it is a slight splash, a humid environment or a serious immersion, it can effectively prevent water from entering the motor and protect the bearing 3 from water erosion. This greatly reduces the risk of motor failure caused by water and improves the reliability and stability of the motor.

[0036] To fix the sealing ring 4, please refer to Figure 3 In a preferred embodiment, the rotating shaft 2 is provided with a first receiving groove 41 for receiving the sealing ring 4, a clamp 42 is provided on the outer side of the sealing ring 4, and a second receiving groove 43 for receiving the clamp 42 is provided on the sealing ring 4, and the clamp 42 is used to press the sealing ring 4 onto the rotating shaft 2.

[0037] When in use, the sealing ring 4 is placed in the first receiving groove 41 on the rotating shaft 2. The size of the first receiving groove 41 matches that of the sealing ring 4, which can ensure that the position of the sealing ring 4 on the rotating shaft 2 is relatively fixed and will not be easily displaced. When it is necessary to ensure the sealing between the sealing ring 4 and the rotating shaft 2, the clamp 42 is installed on the second receiving groove 43 of the sealing ring 4. The clamp 42 is gradually tightened by its own elasticity or by a fastening device. As the clamp 42 is tightened, the clamp 42 generates radial pressure on the sealing ring 4. This pressure causes the sealing ring 4 to be pressed against the rotating shaft 2, and the sealing ring 4 is elastically deformed to fill the gap between the sealing ring 4 and the rotating shaft 2. Under the pressure of the clamp 42, the sealing ring 4 is tightly fitted to the surface of the rotating shaft 2 to form a good seal. In this way, impurities such as water and dust can be effectively prevented from entering the motor from the gap between the rotating shaft 2 and the sealing ring 4.

[0038] To improve the stability of the sealing ring 4, please refer to Figure 3 In a preferred embodiment, the rotating shaft 2 is provided with limiting grooves 44 on both sides of the sealing ring 4 , and limiting rings 45 are provided in the limiting grooves 44 . The two limiting rings 45 are respectively pressed against the two sides of the sealing ring 4 .

[0039] When in use, the sealing ring 4 is installed at a specific position on the rotating shaft 2 so that it is located between the two limiting grooves 44, and the limiting rings 45 are respectively placed in the limiting grooves 44 on the rotating shaft 2. The size of the limiting ring 45 matches the limiting groove 44, which can ensure that the position of the limiting ring 45 in the limiting groove 44 is relatively fixed. When the motor is running, the rotating shaft 2 rotates at high speed. In the axial direction, the two limiting rings 45 are respectively pressed against the two sides of the sealing ring 4, limiting the axial movement of the sealing ring 4. When the sealing ring 4 is subjected to various forces during the operation of the motor, it will not be displaced along the axial direction of the rotating shaft 2, ensuring that the sealing ring 4 is always in the correct working position and can continue to play the role of waterproofing and dustproofing.

[0040] To fix the sealing cover 5, please refer to Figure 1 In a preferred embodiment, the sealing cover 5 is provided with a plurality of through holes 51 , and bolts 52 are passed through the through holes 51 . The motor end cover 1 is provided with screw holes 53 , and the bolts 52 are threadedly connected in the screw holes 53 .

[0041] When in use, the sealing cover 5 is placed at a specific position of the motor end cover 1, so that the through hole 51 on the sealing cover 5 corresponds to the screw hole 53 on the motor end cover 1, and a suitable bolt 52 is selected, and the bolt 52 is passed through the through hole 51 on the sealing cover 5, and the bolt 52 is rotated. Since the screw hole 53 on the motor end cover 1 is provided with a thread matching the bolt 52, the bolt 52 is gradually screwed into the screw hole 53 during the rotation process. As the bolt 52 is continuously screwed in, the head of the bolt 52 gradually presses the sealing cover 5, so that the gap between the sealing cover 5 and the motor end cover 1 is gradually reduced. By providing the through hole 51 on the sealing cover 5 and using the bolt 52 to be threadedly connected with the screw hole 53 on the motor end cover 1, the sealing cover 5 can be firmly fixed and well sealed, ensuring the safe and reliable operation of the motor under various working conditions.

[0042] In order to improve the stability of the sealing cover 5, please refer to Figure 2 In a preferred embodiment, the bolt 52 is provided with an anti-loosening gear 54, and the motor end cover 1 is provided with a slot 55, in which an anti-loosening tooth ring 56 is clamped, and the anti-loosening tooth ring 56 is used to engage with multiple anti-loosening gears 54 at the same time.

[0043] When in use, the bolt 52 is passed through the through hole 51 on the sealing cover 5 and screwed into the screw hole 53 on the motor end cover 1, and the bolt 52 is gradually tightened to fix the sealing cover 5. At this time, the anti-loosening gear 54 on the bolt 52 is in a specific position as the bolt 52 is installed, and the anti-loosening tooth ring 56 is placed in the slot 55 on the motor end cover 1. The size of the slot 55 matches the anti-loosening tooth ring 56 to ensure that the anti-loosening tooth ring 56 can be stably placed in the slot 55 without moving easily. After the anti-loosening tooth ring 56 is placed in the slot 55, its position is adjusted so that it can be meshed with the anti-loosening gears 54 on multiple bolts 52 at the same time. During the operation of the motor, due to factors such as vibration, impact or temperature changes, the bolt 52 may tend to loosen. However, when the anti-loosening tooth ring 56 is meshed with the anti-loosening gears 54 on multiple bolts 52, a reverse resistance will be generated on the bolt 52 to prevent the bolt 52 from loosening.

[0044] To improve the sealing performance between the sealing cover 5 and the sealing ring 4, please refer to Figure 1 In a preferred embodiment, an engagement groove 57 is provided on the inner side of the sealing cover 5 , the outer side of the sealing ring 4 extends into the engagement groove 57 , and the outer side of the sealing ring 4 abuts against the bottom wall of the engagement groove 57 .

[0045] When in use, after the sealing ring 4 is installed at the corresponding position on the rotating shaft 2, the sealing cover 5 is installed on the motor end cover 1. As the sealing cover 5 is installed, the outer side of the sealing ring 4 gradually approaches the inner side of the sealing cover 5. When the sealing cover 5 is installed in place, the outer side of the sealing ring 4 extends into the bite groove 57 on the inner side of the sealing cover 5. The outer side of the sealing ring 4 abuts against the bottom wall of the bite groove 57, forming a close contact. This contact increases the sealing area and tightness, and effectively prevents impurities such as water and dust from entering the motor from the connection between the sealing cover 5 and the sealing ring 4.

[0046] In order to drain the water that has entered the connection between the sealing ring 4 and the sealing cover 5 in time, please refer to Figure 1 In a preferred embodiment, the sealing cover 5 is provided with a plurality of drainage holes 58, the inlet of the drainage holes 58 is connected with the bite groove 57, the outlet of the drainage holes 58 is open, and the drainage holes 58 are curved.

[0047] During use, when the motor is in an environment where liquid may come into contact, such as a humid environment, splashing water or short-term immersion in water, the liquid may enter the bite groove 57 through the tiny gap between the sealing cover 5 and other components. If a small amount of water or other liquid enters the bite groove 57 between the sealing cover 5 and the sealing ring 4, the liquid will gather in the bite groove 57 due to gravity or the flow trend of the liquid. Since the inlet of the drain hole 58 is connected to the bite groove 57 and the drain hole 58 is curved, the liquid will flow along the curved channel of the drain hole 58 under the influence of gravity and capillary action. The curved design can prevent the liquid from easily flowing back into the bite groove 57 without external force. The outlet of the drain hole 58 is open, and the liquid is finally discharged to the outside of the motor through the open drain hole 58. This can effectively prevent the liquid from accumulating at the sealing cover 5 and avoid damage to the shaft 2, bearing 3 and other components inside the motor. The curved drainage hole 58 with an open outlet arranged on the sealing cover 5 can timely discharge the liquid that may enter the bite groove 57, ensuring that the motor can still operate normally in a humid or liquid-contact environment, thereby improving the reliability of the waterproof protection structure of the motor shaft 2 bearing 3.

[0048] To clean the connection between the sealing cover 5 and the sealing ring 4, please refer to Figure 3 In a preferred embodiment, a brush 46 is provided on the sealing cover 5 , and the brush 46 abuts against the sealing ring 4 .

[0049] When in use, when the motor is not running, the brush 46 on the sealing cover 5 gently abuts against the sealing ring 4, and the brush 46 is in a stationary state. As the motor runs, the sealing ring 4 may accumulate some dirt due to friction with the rotating shaft 2 or the influence of the external environment. The brush 46 can play a certain cleaning role in the process of abutting against the sealing ring 4. When the sealing ring 4 rotates, the fibers of the brush 46 will gently wipe the surface of the sealing ring 4, remove some dirt, and keep the sealing ring 4 clean.

[0050] To secure the waterproof cover, refer to Figure 1 In a preferred embodiment, a clamp block 21 is slidably connected to the rotating shaft 2 along the radial direction of the rotating shaft 2, and a clamp groove 22 for accommodating the clamp block 21 is provided on the waterproof cover. A spring 23 is provided between the clamp block 21 and the rotating shaft 2, one end of the spring 23 is connected to the clamp block 21, and the other end of the spring 23 is connected to the rotating shaft 2. The spring 23 is in a compressed state, and the spring 23 causes the clamp block 21 to have a tendency to slide toward the waterproof cover.

[0051] When in use, the waterproof cover is installed at a specific position on the rotating shaft 2, so that the clamping groove 22 on the waterproof cover corresponds to the clamping block 21 on the rotating shaft 2. When the waterproof cover is installed in place, since the spring 23 is in a compressed state, the spring 23 will apply a continuous pressure to the clamping block 21, so that the clamping block 21 has a tendency to slide toward the waterproof cover. Under the action of the spring 23, the clamping block 21 will slide into the clamping groove 22 on the waterproof cover, thereby fixing the waterproof cover on the rotating shaft 2, so that the waterproof cover will not fall off easily due to vibration, impact or other external forces during the operation of the motor, thereby ensuring the stability and reliability of the waterproof cover. In short, by arranging a slidable clamping block 21 on the rotating shaft 2, and using the spring 23 to make the clamping block 21 cooperate with the clamping groove 22 on the waterproof cover, the waterproof cover can be firmly fixed, the waterproof performance can be enhanced, it can adapt to different working conditions, and the reliability of the waterproof protection structure of the motor shaft 2 bearing 3 can be improved.

[0052] The implementation principle of a waterproof protection structure for a motor shaft bearing in an embodiment of the present application is as follows: when the motor is running, the shaft 2 rotates at high speed under the support of the bearing 3. The sealing ring 4 is tightly sleeved on the shaft 2 and is located on the outside of the motor end cover 1. When water or other liquids approach the shaft 2, the sealing ring 4 can prevent most of the liquid from directly entering the gap between the motor end cover 1 and the shaft 2, reducing the risk of liquid erosion on the bearing 3. The sealing cover 5 is installed on the motor end cover 1 and is located on the outside of the sealing ring 4. The function of the sealing cover 5 is to further enhance the waterproof protection effect. It cooperates with the sealing ring 4 to form a relatively closed space to isolate the shaft 2 from the external environment. Even if a small amount of liquid breaks through the defense line of the sealing ring 4, the sealing cover 5 can also play a blocking role to prevent the liquid from continuing to penetrate into the motor. The waterproof cover is located on the outside of the sealing ring 4 and the sealing cover 5 and is sleeved on the shaft 2. Its main function is to provide additional waterproof protection on the outermost layer. When encountering harsh working environments, such as heavy rain, spraying or immersion, the waterproof cover can prevent a large amount of water from directly impacting the sealing ring 4 and the sealing cover 5. At the same time, the waterproof cover can also prevent dust, debris, etc. from entering the sealed area, further improving the reliability of the waterproof protection structure.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waterproof protection structure for a motor shaft bearing, characterized in that: The motor comprises a motor end cover (1) and a rotating shaft (2) coaxially arranged on the motor end cover (1), the motor end cover (1) and the rotating shaft (2) being rotatably connected via a bearing (3), the rotating shaft (2) being provided with a sealing ring (4), the sealing ring (4) being located on the outside of the motor end cover (1), the motor end cover (1) being provided with a sealing cover (5), the sealing cover (5) being located on the outside of the sealing ring (4), and the rotating shaft (2) being provided with a waterproof cover (6), the waterproof cover (6) being located on the outside of the sealing ring (4) and the sealing cover (5); The sealing cover (5) is provided with a plurality of through holes (51), bolts (52) are inserted into the through holes (51), the motor end cover (1) is provided with screw holes (53), and the bolts (52) are threadedly connected into the screw holes (53); The bolt (52) is provided with an anti-loosening gear (54), the motor end cover (1) is provided with a slot (55), an anti-loosening toothed ring (56) is clamped in the slot (55), and the anti-loosening toothed ring (56) is used to mesh with a plurality of anti-loosening gears (54) at the same time; A clamping block (21) is slidably connected to the rotating shaft (2) in the radial direction of the rotating shaft (2); a clamping groove (22) for accommodating the clamping block (21) is provided on the waterproof cover (6); a spring (23) is provided between the clamping block (21) and the rotating shaft (2); one end of the spring (23) is connected to the clamping block (21), and the other end of the spring (23) is connected to the rotating shaft (2); the spring (23) is in a compressed state, and the spring (23) causes the clamping block (21) to have a tendency to slide toward the waterproof cover (6); The sealing cover (5) is provided with a plurality of drainage holes (58) in a ring, the inlets of the drainage holes (58) are connected to the bite grooves (57), the outlets of the drainage holes (58) are open, and the drainage holes (58) are curved; The sealing cover (5) is provided with a brush (46), and the brush (46) abuts against the sealing ring (4).

2. The waterproof protection structure for a motor shaft bearing according to claim 1, characterized in that: The rotating shaft (2) is provided with a first receiving groove (41) for receiving the sealing ring (4), a clamp (42) is provided on the outer side of the sealing ring (4), and a second receiving groove (43) for receiving the clamp (42) is provided on the sealing ring (4), and the clamp (42) is used to press the sealing ring (4) onto the rotating shaft (2).

3. The waterproof protection structure for a motor shaft bearing according to claim 2, characterized in that: The rotating shaft (2) is provided with limiting grooves (44) on both sides of the sealing ring (4), and limiting rings (45) are provided in the limiting grooves (44). The two limiting rings (45) are respectively pressed against the two sides of the sealing ring (4).

4. The waterproof protection structure for a motor shaft bearing according to claim 1, characterized in that: An engagement groove (57) is provided on the inner side of the sealing cover (5), the outer side of the sealing ring (4) extends into the engagement groove (57), and the outer side of the sealing ring (4) abuts against the bottom wall of the engagement groove (57).

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