Bearing anti-slip structure and motor

Abstract

The application relates to the technical field of motor manufacturing, and discloses a bearing anti-slip structure, which comprises a bearing seat and a bearing outer ring matched with the bearing seat through gap cooperation, a groove is arranged on the matching surface of the bearing seat and the bearing outer ring, a heat-deformed metal sheet is placed in the groove, a through hole is arranged on the heat-deformed metal sheet, when the temperature of the bearing exceeds a preset threshold value due to motor operation, the heat-deformed metal sheet is in contact with the bearing in the bearing seat, the heat-deformed metal sheet is protruded inward along the through hole, the protruded heat-deformed metal sheet tightly holds the bearing outer ring, and the running bearing is stopped from rotating. The application solves the problem that the interference amount of the bearing and the shaft is insufficient during the operation of the motor, the friction force between the bearing and the shaft neck is insufficient, and the bearing runs.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, and in particular to a bearing anti-slip structure and a motor. Background Technology

[0002] Most motors require bearings to ensure stable operation. However, insufficient interference fit between the bearing and shaft can lead to insufficient friction between the bearing and the journal, causing the inner ring to slip. During operation, temperature differences exist between the shaft, inner ring, outer ring, and bearing housing. These temperature differences result in insufficient interference fit at the mating points. Over time, wear occurs at the mating points, gradually leading to ring slippage. Subsequently, the bearing temperature rises, the bearing clearance decreases or even disappears, and the inner and outer rings rotate together with the shaft until the bearing is unusable. Poor bearing lubrication, such as ineffective lubricating oil, improper selection of lubricating oil, or excessive impurities, can also cause bearing temperature increases. Changes in the dimensional fit between the bearing and the shaft or bearing housing can also cause ring slippage. When the grease is very hard or contains impurities, it can create a damming effect on the rolling elements, preventing their rotation and generating frictional heat. This also causes the outer ring to rotate, resulting in wear. When the resistance is high, this resistance can overcome the friction between the inner ring and the shaft, causing slippage and further wear.

[0003] Bearing race slippage is a very common failure. Bearing race slippage occurs when the bearing slides relative to the bearing housing on the shaft or the bearing in the end cover. Sliding between the inner ring and the bearing housing on the shaft results in inner race slippage, while sliding between the outer ring and the end cover bearing housing results in outer race slippage. Bearing race slippage directly leads to increased bearing temperature, increased vibration, abnormal noise, premature bearing failure, and wear or even damage to mating components in the equipment. Summary of the Invention

[0004] This invention provides a bearing anti-slip structure and a motor, which solves the problem that insufficient interference fit between the bearing and the shaft during motor operation leads to insufficient friction between the bearing and the journal, resulting in bearing slippage.

[0005] To achieve the above objectives, the present invention provides a bearing anti-slip structure, comprising: a bearing housing, and a bearing outer ring that mates with the bearing housing via a clearance fit. The structure is characterized by a groove provided on the mating surface of the bearing housing and the bearing outer ring, through which a heat-deformable metal sheet is placed. A through hole is provided on the heat-deformable metal sheet. When the motor operates and the bearing temperature exceeds a preset threshold, the heat-deformable metal sheet contacts the bearing inside the bearing housing, causing the heat-deformable metal sheet to bulge inward along the through hole. The bulging heat-deformable metal sheet grips the bearing outer ring, stopping the running bearing from rotating.

[0006] Preferably, the groove is an annular groove, wherein the annular groove is formed in the axial direction of the bearing chamber to prevent water from entering the motor when the oil seal fails, thus preventing water from accumulating in the bearing chamber.

[0007] Preferably, the heat-deformable metal sheet is annular in shape to ensure that it can be placed in the annular groove.

[0008] Preferably, the size of the heat-deformable metal sheet is the same as the size of the annular groove, and the number of the heat-deformable metal sheets is the same as the number of the annular grooves and corresponds one-to-one.

[0009] Preferably, the heat-deformable metal sheet is formed by pressing two layers of metal sheets together.

[0010] Preferably, the double-layer metal sheet includes an outer heat-deformable metal sheet and an inner heat-deformable metal sheet, wherein the heat sensitivity of the outer heat-deformable metal sheet is higher than that of the inner heat-deformable metal sheet.

[0011] Preferably, a through hole is provided on the heat-deformed metal sheet along the circumferential direction.

[0012] Preferably, the through hole is a U-shaped through hole. When the bearing races, the temperature of the outer ring of the bearing rises, causing the heat-deformed metal sheet to bulge inward along the U-shaped through hole, thus stopping the bearing from rotating.

[0013] The present invention also provides an electric motor, wherein the bearing anti-slip structure is detachably provided inside the electric motor.

[0014] Preferably, when the motor bearing is running, the temperature of the outer ring of the bearing rises rapidly, causing the entire annular metal sheet to bulge inward along the U-shaped through hole. The bulging heat-deformed metal sheet hugs the outer ring of the bearing, and under the action of resistance, the running bearing stops rotating, so that the outer ring of the bearing and the bearing housing fit tightly together.

[0015] Compared with the prior art, the advantages of this invention are that it provides a bearing anti-slip structure, consisting of a bearing housing and a bearing outer ring that mates with the bearing housing via a clearance fit. An annular groove is provided on the mating surface of the bearing housing and the bearing outer ring. A heat-deformable metal sheet is placed through the annular groove, and a through hole is provided on the heat-deformable metal sheet. When the motor is operating, if the bearing races, the temperature of the bearing outer ring rises rapidly. The heat-deformable metal sheet, in contact with the high-temperature bearing, deforms under the influence of heat. Because the outer ring is more heat-sensitive than the inner ring, the entire heat-deformable metal sheet can bulge inward along the through hole. The bulging heat-deformable metal sheet tightly grips the bearing outer ring, and under the action of resistance, the running bearing stops rotating. Thus, the outer ring of the bearing and the bearing housing are tightly fitted, solving the problem of insufficient interference fit between the bearing and the shaft during motor operation, which leads to insufficient friction between the bearing and the shaft journal and causes the bearing to run away. Attached Figure Description

[0016] The invention will now be described in more detail with reference to embodiments and the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the bearing anti-slip structure in an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the groove in an embodiment of the present invention;

[0019] Figure 3 This is a cross-sectional view of the bearing running ring structure in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the heat-deformable metal sheet in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the installation of the annular groove in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram of the bearing installation in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the installation of the double-layer heat-deformable metal sheet in an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the through hole in an embodiment of the present invention;

[0025] Figure 9 This is a schematic diagram of the protruding heat-deformable metal sheet in an embodiment of the present invention;

[0026] Figure 10 This is a schematic diagram of the working operation of the bearing anti-slip structure in an embodiment of the present invention.

[0027] Figure label:

[0028] 1. Inner ring of bearing; 2. Outer ring of bearing; 3. Bearing housing; 4. Shaft; 5. First annular groove; 6. Second annular groove; 7. Bearing; 8. Heat-deformed metal sheet; 9. Through hole; 8.1. Outer ring heat-deformed metal sheet; 8.2. Inner ring heat-deformed metal sheet. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the 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. It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicators will also change accordingly.

[0030] Example 1:

[0031] Please see Figure 1 A bearing anti-slip structure includes a bearing housing 3 and a bearing outer ring 2 that mates with the bearing housing 3 via a clearance fit. The structure is characterized by a groove on the mating surface of the bearing housing 3 and the bearing outer ring 2, through which a heat-deformable metal sheet 8 is placed. A through hole 9 is provided on the heat-deformable metal sheet 8. When the motor operates and the temperature of the bearing 7 exceeds a preset threshold, the heat-deformable metal sheet 8 contacts the bearing 7 inside the bearing housing 3, causing the heat-deformable metal sheet 8 to bulge inward along the through hole 9. The bulging heat-deformable metal sheet 8 grips the bearing outer ring 2, stopping the running bearing 7 from rotating.

[0032] It is worth noting that bearing 7 slippage is a very common fault. Bearing 7 slippage occurs when there is relative sliding between bearing 7 and bearing position of shaft 4 or between bearing 7 and bearing housing of end cover. Relative sliding between bearing inner ring 1 and bearing position of shaft 4 is inner ring slippage, while relative sliding between bearing outer ring 2 and bearing housing of end cover is outer ring slippage. Bearing 7 slippage will directly lead to increased bearing temperature, increased vibration, and abnormal noise. Bearing 7 will fail prematurely, causing wear or even damage to the mating parts of the equipment.

[0033] It should be noted that under normal circumstances, when the motor is working, the shaft 4 rotates, and the inner ring 1 of the bearing and the shaft, and the outer ring 2 of the bearing and the end cover are in a state of mutual stillness.

[0034] Furthermore, if the inner ring 1 of the bearing rotates with the shaft, the inner ring 1 of the bearing and the shaft are tightly fitted, and the outer ring 2 of the bearing and the bearing housing 3 are loosely fitted. Thus, the outer ring 2 of the bearing is fitted with the bearing housing 3 through the loose fit.

[0035] Furthermore, most motors require bearings 7 to ensure stable operation. However, during operation, there is a temperature difference between the shaft, the inner ring 1 of the bearing, the outer ring 2 of the bearing, and the bearing housing 3. This temperature difference results in insufficient interference fit at the mating points. Over time, wear occurs at the mating points, gradually leading to bearing slippage. Subsequently, the temperature of bearing 7 rises, the clearance of bearing 7 decreases or even disappears, and the inner and outer rings of the bearing rotate together with the shaft until it is scrapped. Poor lubrication of bearing 7, such as lubricant failure, improper selection, or excessive impurities, can also cause bearing slippage. Lubrication failure leads to increased bearing temperature and changes in the dimensional fit between bearing 7 and the shaft or bearing housing 3. When the grease is very hard or contains impurities, it can create a damming effect on the rolling elements of the shaft 7, preventing rotation and generating frictional heat. This also drives the outer ring 2 of the bearing to rotate, causing wear. When the resistance is high, this resistance can overcome the friction between the inner ring 1 of the bearing and the shaft, causing slippage between the shaft and the inner ring 1 of the bearing, resulting in wear.

[0036] Please see Figure 2 The diagram shows a groove, which is an annular groove. The annular groove is slotted along the axial direction of the bearing chamber to prevent water from accumulating in the bearing chamber.

[0037] It is worth noting that a groove is provided on the mating surface between the bearing housing 3 and the outer ring 2 of the bearing. Generally, the groove includes a first annular groove 5 and a second annular groove 6, and a heat-deformable metal sheet 8 is placed in the first annular groove 5 and the second annular groove 6 respectively.

[0038] It should be noted that the number of the annular grooves can be appropriately reduced or increased, and is not fixed to only the first annular groove 5 and the second annular groove 6.

[0039] Furthermore, the annular grooves can be added or reduced at appropriate positions according to the design and requirements of the bearing housing 3, so as to install the heat-deformable metal sheet 8 and achieve the effect of clamping the outer ring 2 of the bearing. The arrangement and quantity of the heat-deformable metal sheet 8 can be adjusted according to the specific situation to achieve the best effect.

[0040] Please see Figure 3 The diagram shows a cross-sectional view of the bearing race structure. The bearing 7 is installed in the bearing housing 3. The outer ring heat-deformable metal sheet 8.1 is placed in the first annular groove 5, and the inner ring heat-deformable metal sheet 8.2 is placed in the second annular groove 6. This solves the problem of high heat caused by race and noise caused by axial movement, extends the service life of the bearing 7, and improves the energy consumption of the motor.

[0041] It should be noted that the outer ring heat-deformed metal sheet 8.1 and the inner ring heat-deformed metal sheet 8.2 help to disperse the heat generated by the bearing 7. When the bearing 7 is running, friction generates heat. If heat cannot be dissipated in time, it may cause the bearing 7 to overheat, be damaged, or even fail. The presence of the outer ring heat-deformed metal sheet 8.1 and the inner ring heat-deformed metal sheet 8.2 can promote heat conduction and dissipation, thereby reducing the operating temperature of the bearing 7 and increasing its service life; it can also reduce axial movement noise, which refers to the slight movement of the bearing 7 during operation caused by unstable friction and vibration. This axial movement can generate noise and increase energy consumption. By placing the heat-deformed metal sheet 8 inside the bearing housing 3, axial movement can be reduced to a certain extent, thereby reducing noise and energy consumption.

[0042] Please see Figure 4 This is a schematic diagram of a heat-deformable metal sheet 8, wherein the double-layer metal of the heat-deformable metal sheet 8 includes an outer heat-deformable metal sheet 8.1 and an inner heat-deformable metal sheet 8.2.

[0043] It should be noted that the heat-deformable metal sheet 8 is annular in shape to ensure that the heat-deformable metal sheet 8 can be placed in the annular groove.

[0044] Furthermore, the size of the heat-deformable metal sheet 8 is the same as the size of the annular groove, and the number of the heat-deformable metal sheet 8 is the same as the number of the annular groove and they correspond one-to-one.

[0045] Please see Figure 5 The diagram shows the installation of the annular groove. A second annular groove 6 is opened on the mating surface between the bearing housing 3 and the outer ring 2 of the bearing. The first annular groove 5 and the second annular groove 6 are used to install the heat-deformable metal sheet 8.

[0046] Please see Figure 6 The diagram shows the installation of the bearing. After the heat-deformed metal sheet 8 is installed, the rotating shaft 4 will drive the bearing 7 to move, thereby confirming whether the bearing 7 has a running wheel fault.

[0047] It is worth noting that before the bearing 7 is placed into the bearing housing 3, the annular heat-deformed metal sheet 8 is placed into the groove reserved in the bearing housing 3, and then the bearing 7 is placed into the bearing housing 3 according to the standard.

[0048] Furthermore, two annular grooves, namely the first annular groove 5 and the second annular groove 6, are made on the mating surface between the bearing housing 3 and the outer ring 2 of the bearing. Before the bearing 7 is placed into the bearing housing 3, two annular heat-deformed metal sheets 8 are placed into the grooves reserved in the bearing housing 3, and then the bearing 7 is placed into the bearing housing 3 according to the standard, ensuring that the number of annular grooves is consistent with the number of heat-deformed metal sheets 8 and corresponds one-to-one.

[0049] Furthermore, the process of placing bearing 7 into bearing housing 3 generally follows standard procedures. First, ensure that both bearing housing 3 and bearing 7 are clean, and apply an appropriate amount of lubricant if necessary. Then, place bearing 7 vertically upwards and gently push it into bearing housing 3, ensuring proper alignment. Using suitable tools (such as impact tools or bearing installers) can help ensure that bearing 7 is placed correctly; finally, after completing the installation of bearing 7, ensure that bearing 7 is correctly installed and can rotate freely.

[0050] Specifically, the heat-deformable metal sheet 8 is formed by pressing two layers of metal together, that is, the heat-deformable metal sheet 8 formed by pressing two layers of metal together is usually referred to as a double-layer jacketed heat-deformable sheet.

[0051] It should be noted that the double-layer metal of the heat-deformable metal sheet 8 includes an outer heat-deformable metal sheet 8.1 and an inner heat-deformable metal sheet 8.2. The heat sensitivity of the outer heat-deformable metal sheet 8.1 and the inner heat-deformable metal sheet 8.2 is different, wherein the heat sensitivity of the outer heat-deformable metal sheet 8.1 is higher than that of the inner heat-deformable metal sheet 8.2.

[0052] It is worth noting that the heat-deformed metal sheet 8 is usually made of a material with good resilience, such as spring steel, which serves to provide additional fastening force and anti-loosening function.

[0053] Specifically, the number of layers of the heat-deformed metal sheet 8 can be appropriately reduced or increased, and the shape of the heat-deformed metal sheet 8 can also be continuously changed according to the actual situation.

[0054] Furthermore, the heat-deformable metal sheet 8 is a heat-deformable element composed of two layers of metal material. It typically consists of inner and outer metal sheets fixed together by pressing or other methods. These two layers have different coefficients of thermal expansion, meaning they expand at different rates when heated. The heat-deformable metal sheet 8 is designed to utilize this different thermal expansion property to achieve specific functions. When the heat-deformable metal sheet 8 is exposed to high temperatures, the different coefficients of thermal expansion cause the inner and outer metal sheets to expand to different degrees. This difference can be used to achieve fastening, sealing, or other mechanical adjustment effects; for example, in fastening applications, when the heat-deformable sheet is heated, the outer ring heat-deformable metal sheet 8.1 expands due to its larger coefficient of thermal expansion, thereby applying additional pressure and making the connection more secure. This can be applied to bolt fastening, pipe connections, and other fields. The heat-deformable metal sheet 8 can also be used for temperature compensation and thermal control. By selecting different metal materials and thicknesses, specific thermal expansion characteristics can be achieved to adapt to application requirements under different temperature conditions.

[0055] Furthermore, the heat-deformable metal sheet 8 can deform under high-temperature conditions, thereby generating a fastening force. Specifically, at high temperatures, the coefficient of thermal expansion of the outer ring heat-deformable metal sheet 8.1 is greater than that of the inner ring heat-deformable metal sheet 8.2. Therefore, the outer ring heat-deformable metal sheet 8.1 will expand and apply pressure, making the bearing more firmly fixed in the housing. This design also has the functions of preventing loosening and resisting vibration. When using the heat-deformable metal sheet 8, attention should be paid to its applicable operating temperature range to ensure its normal operation.

[0056] Please see Figure 7 The diagram shows the installation of the double-layer heat-deformable metal sheet. The heat-deformable metal sheet 8 is placed along the groove on the bearing seat 3, so that the heat-deformable metal sheet 8 protrudes and hugs the outer ring 2 of the bearing.

[0057] It should be noted that by using the protrusions of the heat-deformable metal sheet 8 to grip the outer ring 2 of the bearing, the movement of the bearing 7 can be effectively reduced, thereby reducing noise and energy consumption. When the bearing 7 is working, excessive friction and movement may cause the bearing 7 to overheat, be damaged, or even fail. By using the heat-deformable metal sheet 8 to grip the outer ring 2 of the bearing, the movement of the bearing 7 can be reduced, and the heat generated by the bearing 7 can be helped to be distributed, thereby extending the service life of the bearing 7.

[0058] It is worth noting that in practical applications, the appropriate heat-deformable metal sheet 8 should be selected based on the specific bearing type 7, operating conditions, and requirements, and proper installation and maintenance should be ensured. Furthermore, due to the special properties of the heat-deformable metal sheet 8, regular inspection and replacement may be necessary to ensure its normal operation and service life.

[0059] Please see Figure 8 The diagram shows a through hole. A through hole 9 is provided on the heat-deformed metal sheet 8 along the circumferential direction. The through hole 9 is a U-shaped through hole. When the bearing 7 runs, the temperature of the outer ring 2 of the bearing rises, causing the heat-deformed metal sheet 8 to bulge inward along the U-shaped through hole, thus stopping the running bearing 7 from rotating.

[0060] It should be noted that by opening multiple U-shaped through holes on the edge, the heat-deformable metal sheet 8 can more easily deform and bend when heated. Its flexibility provides better adaptability and adjustability, allowing the heat-deformable metal sheet 8 to adapt to connecting parts of different shapes and sizes. The presence of through holes 9 can increase the contact area between the heat-deformable metal sheet 8 and the surrounding environment, thereby promoting heat transfer and dissipation, helping to distribute heat evenly, and avoiding problems caused by overheating. By opening through holes 9 on the edge, the total weight of the heat-deformable metal sheet 8 can be reduced, thereby reducing the system load and cost to a certain extent.

[0061] It is worth noting that the shape of the through hole 9 does not necessarily have to be set as a U-shaped through hole; different shapes of through holes 9 can be set.

[0062] Please see Figure 9 The diagram shows a protruding heat-deformable metal sheet. When the motor is working, if the bearing runs out of its race under special circumstances, the temperature of the outer ring 2 of the bearing will rise rapidly. At this time, the heat-deformable metal sheet 8, which is in contact with the high-temperature bearing 7, will deform under the action of heat. Because the outer ring is more heat-sensitive than the inner ring, the entire heat-deformable metal sheet 8 can bulge inward along the U-shaped through hole. The protruding heat-deformable metal sheet 8 hugs the outer ring 2 of the bearing, and under the action of resistance, the running bearing 7 stops rotating, so that the outer ring of the bearing 7 and the bearing housing 3 are tightly fitted.

[0063] Working principle and usage process:

[0064] First, under normal circumstances, when the motor is working, the shaft rotates, and the inner ring 1 of the bearing and the shaft, and the outer ring 2 of the bearing and the end cover are in a state of mutual stillness.

[0065] Next, when the motor is working, if the bearing runs out of its race under special circumstances, the temperature of the outer ring 2 of the bearing will rise rapidly. At this time, the heat-deformable metal sheet 8, which is in contact with the high-temperature bearing 7, will deform under the action of heat. Because the outer ring is more heat-sensitive than the inner ring, the entire heat-deformable metal sheet 8 can bulge inward along the U-shaped through hole. The bulging heat-deformable metal sheet 8 hugs the outer ring 2 of the bearing, and under the action of resistance, the running bearing 7 stops rotating, so that the outer ring of the bearing 7 and the bearing housing 3 fit tightly together.

[0066] Please see Figure 10 This is a schematic diagram of the bearing anti-slip structure. When the motor is working, the bearing 7 will rotate in a clockwise direction. During the rotation of the bearing 7, if the bearing runs off under special circumstances, the temperature of the outer ring 2 of the bearing will rise rapidly, causing the entire heat-deformed metal sheet 8 to bulge inward along the U-shaped through hole. The bulging heat-deformed metal sheet 8 hugs the outer ring 2 of the bearing, and under the action of resistance, the running bearing 7 stops rotating, so that the outer ring of the bearing 7 and the bearing seat 3 are tightly fitted.

[0067] Furthermore, the bearing anti-slip structure can solve the risk of bearing slippage while simplifying the assembly process, improve the service life of bearing 7, and reduce motor energy consumption; it can automatically tighten according to changes in operating temperature, and the clamping force can be changed through different design dimensions, so as to achieve sufficient clamping force without damaging the surface of bearing 7; it can axially groove in the bearing chamber 3 to deal with the problem of water entering the motor when the oil seal fails, water accumulating in the bearing chamber 3, and causing corrosion and damage to bearing 7 during long-term operation.

[0068] Example 2:

[0069] Furthermore, the present invention provides an electric motor, characterized in that the bearing anti-slip structure is detachably provided inside the electric motor.

[0070] The motor has an internal bearing anti-slip structure, which can be referred to here. Figure 1 A bearing anti-slip structure includes a bearing housing 3 and a bearing outer ring 2 that mates with the bearing housing 3 via a clearance fit. The structure is characterized by a groove on the mating surface of the bearing housing 3 and the bearing outer ring 2, through which a heat-deformable metal sheet 8 is placed. A through hole 9 is provided on the heat-deformable metal sheet 8. When the motor operates and the temperature of the bearing 7 exceeds a preset threshold, the heat-deformable metal sheet 8 contacts the bearing 7 inside the bearing housing 3, causing the heat-deformable metal sheet 8 to bulge inward along the through hole 9. The bulging heat-deformable metal sheet 8 grips the bearing outer ring 2, stopping the running bearing 7 from rotating.

[0071] It is worth noting that bearing 7 slippage is a very common fault. Bearing 7 slippage occurs when there is relative sliding between bearing 7 and bearing position of shaft 4 or between bearing 7 and bearing housing of end cover. Relative sliding between bearing inner ring 1 and bearing position of shaft 4 is inner ring slippage, while relative sliding between bearing outer ring 2 and bearing housing of end cover is outer ring slippage. Bearing 7 slippage will directly lead to increased bearing temperature, increased vibration, and abnormal noise. Bearing 7 will fail prematurely, causing wear or even damage to the mating parts of the equipment.

[0072] It should be noted that under normal circumstances, when the motor is working, the shaft 4 rotates, and the inner ring 1 of the bearing and the shaft, and the outer ring 2 of the bearing and the end cover are in a state of mutual stillness.

[0073] Furthermore, if the inner ring 1 of the bearing rotates with the shaft, the inner ring 1 of the bearing and the shaft are tightly fitted, and the outer ring 2 of the bearing and the bearing housing 3 are loosely fitted. Thus, the outer ring 2 of the bearing is fitted with the bearing housing 3 through the loose fit.

[0074] Furthermore, most motors require bearings 7 to ensure stable operation. However, during operation, there is a temperature difference between the shaft, the inner ring 1 of the bearing, the outer ring 2 of the bearing, and the bearing housing 3. This temperature difference results in insufficient interference fit at the mating points. Over time, wear occurs at the mating points, gradually leading to bearing slippage. Subsequently, the temperature of bearing 7 rises, the clearance of bearing 7 decreases or even disappears, and the inner and outer rings of the bearing rotate together with the shaft until it is scrapped. Poor lubrication of bearing 7, such as lubricant failure, improper selection, or excessive impurities, can also cause bearing slippage. Lubrication failure leads to increased bearing temperature and changes in the dimensional fit between bearing 7 and the shaft or bearing housing 3. When the grease is very hard or contains impurities, it can create a damming effect on the rolling elements of the shaft 7, preventing rotation and generating frictional heat. This also drives the outer ring 2 of the bearing to rotate, causing wear. When the resistance is high, this resistance can overcome the friction between the inner ring 1 of the bearing and the shaft, causing slippage between the shaft and the inner ring 1 of the bearing, resulting in wear.

[0075] Please see Figure 2 The diagram shows a groove, which is an annular groove. The annular groove is slotted along the axial direction of the bearing chamber to prevent water from accumulating in the bearing chamber.

[0076] It is worth noting that a groove is provided on the mating surface between the bearing housing 3 and the outer ring 2 of the bearing. Generally, the groove includes a first annular groove 5 and a second annular groove 6, and a heat-deformable metal sheet 8 is placed in the first annular groove 5 and the second annular groove 6 respectively.

[0077] It should be noted that the number of the annular grooves can be appropriately reduced or increased, and is not fixed to only the first annular groove 5 and the second annular groove 6.

[0078] Furthermore, the annular grooves can be added or reduced at appropriate positions according to the design and requirements of the bearing housing 3, so as to install the heat-deformable metal sheet 8 and achieve the effect of clamping the outer ring 2 of the bearing. The arrangement and quantity of the heat-deformable metal sheet 8 can be adjusted according to the specific situation to achieve the best effect.

[0079] Please see Figure 3 The diagram shows a cross-sectional view of the bearing race structure. The bearing 7 is installed in the bearing housing 3. The outer ring heat-deformable metal sheet 8.1 is placed in the first annular groove 5, and the inner ring heat-deformable metal sheet 8.2 is placed in the second annular groove 6. This solves the problem of high heat caused by race and noise caused by axial movement, extends the service life of the bearing 7, and improves the energy consumption of the motor.

[0080] It should be noted that the outer ring heat-deformed metal sheet 8.1 and the inner ring heat-deformed metal sheet 8.2 help to disperse the heat generated by the bearing 7. When the bearing 7 is running, friction generates heat. If heat cannot be dissipated in time, it may cause the bearing 7 to overheat, be damaged, or even fail. The presence of the outer ring heat-deformed metal sheet 8.1 and the inner ring heat-deformed metal sheet 8.2 can promote heat conduction and dissipation, thereby reducing the operating temperature of the bearing 7 and increasing its service life; it can also reduce axial movement noise, which refers to the slight movement of the bearing 7 during operation caused by unstable friction and vibration. This axial movement can generate noise and increase energy consumption. By placing the heat-deformed metal sheet 8 inside the bearing housing 3, axial movement can be reduced to a certain extent, thereby reducing noise and energy consumption.

[0081] Please see Figure 4 This is a schematic diagram of a heat-deformable metal sheet 8, wherein the double-layer metal of the heat-deformable metal sheet 8 includes an outer heat-deformable metal sheet 8.1 and an inner heat-deformable metal sheet 8.2.

[0082] It should be noted that the heat-deformable metal sheet 8 is annular in shape, ensuring that the heat-deformable metal sheet 8 can be placed in the annular groove.

[0083] Furthermore, the size of the heat-deformable metal sheet 8 is the same as the size of the annular groove, and the number of the heat-deformable metal sheet 8 is the same as the number of the annular groove and they correspond one-to-one.

[0084] Please see Figure 5 The diagram shows the installation of the annular groove. A second annular groove 6 is opened on the mating surface between the bearing housing 3 and the outer ring 2 of the bearing. The first annular groove 5 and the second annular groove 6 are used to install the heat-deformable metal sheet 8.

[0085] Please see Figure 6 This is a schematic diagram of bearing installation. After the heat-deformed metal sheet 8 is installed, the rotating shaft 4 will drive the bearing 7 to move, thereby confirming whether the bearing 7 has a running wheel failure.

[0086] It is worth noting that before the bearing 7 is placed into the bearing housing 3, the annular heat-deformed metal sheet 8 is placed into the groove reserved in the bearing housing 3, and then the bearing 7 is placed into the bearing housing 3 according to the standard.

[0087] Furthermore, two annular grooves, namely the first annular groove 5 and the second annular groove 6, are made on the mating surface between the bearing housing 3 and the outer ring 2 of the bearing. Before the bearing 7 is placed into the bearing housing 3, two annular heat-deformed metal sheets 8 are placed into the grooves reserved in the bearing housing 3, and then the bearing 7 is placed into the bearing housing 3 according to the standard, ensuring that the number of annular grooves is consistent with the number of heat-deformed metal sheets 8 and corresponds one-to-one.

[0088] Furthermore, the process of placing bearing 7 into bearing housing 3 generally follows standard procedures. First, ensure that both bearing housing 3 and bearing 7 are clean, and apply an appropriate amount of lubricant if necessary. Then, place bearing 7 vertically upwards and gently push it into bearing housing 3, ensuring proper alignment. Using suitable tools (such as impact tools or bearing installers) can help ensure that bearing 7 is placed correctly; finally, after completing the installation of bearing 7, ensure that bearing 7 is correctly installed and can rotate freely.

[0089] Specifically, the heat-deformable metal sheet 8 is formed by pressing two layers of metal together, that is, the heat-deformable metal sheet 8 formed by pressing two layers of metal together is usually referred to as a double-layer jacketed heat-deformable sheet.

[0090] It should be noted that the double-layer metal of the heat-deformable metal sheet 8 includes an outer heat-deformable metal sheet 8.1 and an inner heat-deformable metal sheet 8.2. The heat sensitivity of the outer heat-deformable metal sheet 8.1 and the inner heat-deformable metal sheet 8.2 is different, wherein the heat sensitivity of the outer heat-deformable metal sheet 8.1 is higher than that of the inner heat-deformable metal sheet 8.2.

[0091] It is worth noting that the heat-deformed metal sheet 8 is usually made of a material with good resilience, such as spring steel, which serves to provide additional fastening force and anti-loosening function.

[0092] Specifically, the number of layers of the heat-deformed metal sheet 8 can be appropriately reduced or increased, and the shape of the heat-deformed metal sheet 8 can also be continuously changed according to the actual situation.

[0093] Furthermore, the heat-deformable metal sheet 8 is a heat-deformable element composed of two layers of metal material. It typically consists of inner and outer metal sheets fixed together by pressing or other methods. These two layers have different coefficients of thermal expansion, meaning they expand at different rates when heated. The heat-deformable metal sheet 8 is designed to utilize this different thermal expansion property to achieve specific functions. When the heat-deformable metal sheet 8 is exposed to high temperatures, the different coefficients of thermal expansion cause the inner and outer metal sheets to expand to different degrees. This difference can be used to achieve fastening, sealing, or other mechanical adjustment effects; for example, in fastening applications, when the heat-deformable sheet is heated, the outer ring heat-deformable metal sheet 8.1 expands due to its larger coefficient of thermal expansion, thereby applying additional pressure and making the connection more secure. This can be applied to bolt fastening, pipe connections, and other fields. The heat-deformable metal sheet 8 can also be used for temperature compensation and thermal control. By selecting different metal materials and thicknesses, specific thermal expansion characteristics can be achieved to adapt to application requirements under different temperature conditions.

[0094] Furthermore, the heat-deformable metal sheet 8 can deform under high-temperature conditions, thereby generating a fastening force. Specifically, at high temperatures, the coefficient of thermal expansion of the outer ring heat-deformable metal sheet 8.1 is greater than that of the inner ring heat-deformable metal sheet 8.2. Therefore, the outer ring heat-deformable metal sheet 8.1 will expand and apply pressure, making the bearing more firmly fixed in the housing. This design also has the functions of preventing loosening and resisting vibration. When using the heat-deformable metal sheet 8, attention should be paid to its applicable operating temperature range to ensure its normal operation.

[0095] Please see Figure 7 The diagram shows the installation of the double-layer heat-deformable metal sheet. The heat-deformable metal sheet 8 is placed along the groove on the bearing seat 3, so that the heat-deformable metal sheet 8 protrudes and hugs the outer ring 2 of the bearing.

[0096] It should be noted that by using the protrusions of the heat-deformable metal sheet 8 to grip the outer ring 2 of the bearing, the movement of the bearing 7 can be effectively reduced, thereby reducing noise and energy consumption. When the bearing 7 is working, excessive friction and movement may cause the bearing 7 to overheat, be damaged, or even fail. By using the heat-deformable metal sheet 8 to grip the outer ring 2 of the bearing, the movement of the bearing 7 can be reduced, and the heat generated by the bearing 7 can be helped to be distributed, thereby extending the service life of the bearing 7.

[0097] It is worth noting that in practical applications, the appropriate heat-deformable metal sheet 8 should be selected based on the specific bearing type 7, operating conditions, and requirements, and proper installation and maintenance should be ensured. Furthermore, due to the special properties of the heat-deformable metal sheet 8, regular inspection and replacement may be necessary to ensure its normal operation and service life.

[0098] Please see Figure 8 The diagram shows a through hole. A through hole 9 is provided on the heat-deformed metal sheet 8 along the circumferential direction. The through hole 9 is a U-shaped through hole. When the bearing 7 runs, the temperature of the outer ring 2 of the bearing rises, causing the heat-deformed metal sheet 8 to bulge inward along the U-shaped through hole, thus stopping the running bearing 7 from rotating.

[0099] It should be noted that by opening multiple U-shaped through holes on the edge, the heat-deformable metal sheet 8 can more easily deform and bend when heated. Its flexibility provides better adaptability and adjustability, allowing the heat-deformable metal sheet 8 to adapt to connecting parts of different shapes and sizes. The presence of through holes 9 can increase the contact area between the heat-deformable metal sheet 8 and the surrounding environment, thereby promoting heat transfer and dissipation, helping to distribute heat evenly, and avoiding problems caused by overheating. By opening through holes 9 on the edge, the total weight of the heat-deformable metal sheet 8 can be reduced, thereby reducing the system load and cost to a certain extent.

[0100] It is worth noting that the shape of the through hole 9 does not necessarily have to be set as a U-shaped through hole; different shapes of through holes 9 can be set.

[0101] Please see Figure 9 The diagram shows a protruding heat-deformable metal sheet. When the motor is working, if the bearing runs out of its race under special circumstances, the temperature of the outer ring 2 of the bearing will rise rapidly. At this time, the heat-deformable metal sheet 8, which is in contact with the high-temperature bearing 7, will deform under the action of heat. Because the outer ring is more heat-sensitive than the inner ring, the entire heat-deformable metal sheet 8 can bulge inward along the U-shaped through hole. The protruding heat-deformable metal sheet 8 hugs the outer ring 2 of the bearing, and under the action of resistance, the running bearing 7 stops rotating, so that the outer ring of the bearing 7 and the bearing housing 3 are tightly fitted.

[0102] Working principle and usage process:

[0103] First, under normal circumstances, when the motor is working, the shaft rotates, and the inner ring 1 of the bearing and the shaft, and the outer ring 2 of the bearing and the end cover are in a state of mutual stillness.

[0104] Next, when the motor is working, if the bearing runs out of its race under special circumstances, the temperature of the outer ring 2 of the bearing will rise rapidly. At this time, the heat-deformable metal sheet 8, which is in contact with the high-temperature bearing 7, will deform under the action of heat. Because the outer ring is more heat-sensitive than the inner ring, the entire heat-deformable metal sheet 8 can bulge inward along the U-shaped through hole. The bulging heat-deformable metal sheet 8 hugs the outer ring 2 of the bearing, and under the action of resistance, the running bearing 7 stops rotating, so that the outer ring of the bearing 7 and the bearing housing 3 fit tightly together.

[0105] Please see Figure 10 This is a schematic diagram of the bearing anti-slip structure. When the motor is working, the bearing 7 will rotate in a clockwise direction. During the rotation of the bearing 7, if the bearing runs off under special circumstances, the temperature of the outer ring 2 of the bearing will rise rapidly, causing the entire heat-deformed metal sheet 8 to bulge inward along the U-shaped through hole. The bulging heat-deformed metal sheet 8 hugs the outer ring 2 of the bearing, and under the action of resistance, the running bearing 7 stops rotating, so that the outer ring of the bearing 7 and the bearing seat 3 are tightly fitted.

[0106] Furthermore, the bearing anti-slip structure can solve the risk of bearing slippage while simplifying the assembly process, improve the service life of bearing 7, and reduce motor energy consumption; it can automatically tighten according to changes in operating temperature, and the clamping force can be changed through different design dimensions, so as to achieve sufficient clamping force without damaging the surface of bearing 7; it can axially groove in the bearing chamber 3 to deal with the problem of water entering the motor when the oil seal fails, water accumulating in the bearing chamber 3, and causing corrosion and damage to bearing 7 during long-term operation.

Claims

1. A bearing anti-slip structure, comprising: A bearing housing and a bearing outer ring that mates with the bearing housing via a clearance fit are characterized in that a groove is provided on the mating surface of the bearing housing and the bearing outer ring, through which a heat-deformable metal sheet is placed, and a through hole is provided on the heat-deformable metal sheet along the circumferential direction. When the motor operates and the bearing temperature exceeds a preset threshold, the heat-deformable metal sheet contacts the bearing in the bearing housing, causing the heat-deformable metal sheet to bulge inward along the through hole. The bulging heat-deformable metal sheet hugs the bearing outer ring, causing the running bearing to stop rotating. The through hole is a U-shaped through hole. When the bearing races, the temperature of the outer ring of the bearing rises, causing the heat-deformed metal sheet to bulge inward along the U-shaped through hole. The bulging heat-deformed metal sheet hugs the outer ring of the bearing, causing the running bearing to stop rotating.

2. The bearing anti-slip structure according to claim 1, characterized in that, The groove is an annular groove, which is formed in the axial direction within the bearing housing to prevent water from entering the motor and accumulating in the bearing housing when the oil seal fails.

3. The bearing anti-slip structure according to claim 2, characterized in that, The heat-deformable metal sheet is circular in shape, ensuring that it can be placed within the annular groove.

4. The bearing anti-slip structure according to claim 3, characterized in that, The size of the heat-deformable metal sheet is the same as the size of the annular groove, and the number of the heat-deformable metal sheets is the same as the number of the annular grooves and they correspond one-to-one.

5. The bearing anti-slip structure according to claim 1, characterized in that, The heat-deformable metal sheet is formed by pressing two layers of metal sheets together.

6. The bearing anti-slip structure according to claim 5, characterized in that, The double-layer metal sheet includes an outer heat-deformable metal sheet and an inner heat-deformable metal sheet, wherein the heat sensitivity of the outer heat-deformable metal sheet is higher than that of the inner heat-deformable metal sheet.

7. An electric motor, characterized in that, The motor is provided with a bearing anti-slip structure as described in any one of claims 1-6.

8. The motor according to claim 7, characterized in that, When the motor bearing is running, the temperature of the outer ring of the bearing rises rapidly, causing the entire annular heat-deformed metal sheet to bulge inward along the U-shaped through hole. The bulging heat-deformed metal sheet hugs the outer ring of the bearing, and under the action of resistance, the running bearing stops rotating, so that the outer ring of the bearing is tightly fitted with the bearing housing.

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