Motor bearing nanometer lubrication structure

Abstract

The utility model relates to the technical field of motor bearing lubrication, and particularly discloses a motor bearing nanometer lubrication structure which comprises an inner ring, an outer ring, a rolling body and a retainer, annular rolling grooves are formed in the inner ring and the outer ring, the rolling body is installed in the two rolling grooves in a rolling mode, and a plurality of oil outlet holes are formed in the inner wall of the outer ring at intervals. And a lubricating mechanism which is communicated with the oil outlet hole and is used for lubricating the rolling body is arranged in the outer ring. When the bearing is dismounted and cleaned regularly, the outer ring is shifted to drive the lubricating mechanism to discharge oil, and the nano lubricating oil flows out of the oil outlets to lubricate the rolling body. As the nanometer lubricating oil is gradually consumed up, friction can be generated between the rolling body and the two rolling grooves, as the inner ring is in a high-speed rotating state, the friction between the inner ring and the rolling body can be transmitted to the outer ring, the outer ring vibrates, and the lubricating mechanism in the outer ring can automatically discharge oil. Therefore, friction loss between the rolling bodies and the rolling grooves is reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of motor bearing lubrication, and in particular to a nano-lubrication structure for motor bearings. Background Art

[0002] The motor rotor and the end cover are connected by bearings. Bearings are an important component in modern mechanical equipment. Their main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] However, during long-term high-speed operation, bearings will be worn and damaged due to friction, corrosion, seal damage and other reasons, resulting in reduced rotation accuracy, thereby reducing the overall performance of the motor. In severe cases, it may even cause motor failure and accidents. In addition, as the motor runs, it will cause wear of the rotating seals on the motor shaft, and high temperature will cause aging of rubber parts, which will cause the internal sealing of the motor to decrease, causing a series of problems due to leakage.

[0004] According to the above-mentioned problems, it is urgent to improve the bearing structure. Utility Model Content

[0005] In order to reduce the loss of bearings during use, the present application provides a nano-lubrication structure for motor bearings.

[0006] The present application provides a motor bearing nano-lubricating structure, which adopts the following technical solution:

[0007] A nano-lubricating structure for a motor bearing, comprising an inner ring, an outer ring rotatably sleeved outside the inner ring, a plurality of rolling bodies rollingly mounted between the inner ring and the outer ring, and a retaining frame for limiting the relative positions of the rolling bodies, an annular rolling groove is circumferentially provided on the outer side wall of the inner ring and the inner side wall of the outer ring, and the rolling bodies are rollingly mounted in the two rolling grooves;

[0008] A plurality of oil outlet holes are arranged at intervals on the inner wall of the outer ring, and a lubrication mechanism connected with the oil outlet holes and used for lubricating the rolling element is arranged inside the outer ring.

[0009] By adopting the above technical solution, in order to maintain and repair the wear of the bearing, some bearings will be disassembled and cleaned regularly. After the bearing is cleaned, the inner ring of the bearing is fixed and the outer ring of the bearing is moved. At this time, the outer ring will rotate. The rotating outer ring will drive the lubrication mechanism to discharge oil, so that the nano-lubricating oil flows out from each oil outlet, thereby lubricating the rolling element and extending the service life of the bearing.

[0010] As the nano-lubricant is gradually consumed, friction will occur between the rolling elements and the two rolling grooves. Since the inner ring is in a high-speed rotation state, the friction between the inner ring and the rolling elements will be transmitted to the outer ring, causing the outer ring to vibrate. At this time, the lubrication mechanism in the outer ring can also automatically discharge oil. Although this level of oil discharge is not as much as the oil discharge of directly rotating the outer ring, it can reduce the friction loss between the rolling elements and the rolling grooves to a certain extent, and also extend the service life of the bearing.

[0011] Optionally, the lubrication mechanism comprises a block and a slider, the slider is slidably mounted on the block and can slide along the length direction of the block, a plurality of slide grooves are spaced apart on the peripheral wall of the outer ring, and the length direction of the slide grooves extends along the circumference of the outer ring;

[0012] The clamping block and the sliding block are both located in the sliding groove, and the clamping block is clamped and fixed in the inner wall of the sliding groove, and the sliding block is movably installed in the sliding groove, and the sliding block can slide along the length direction of the sliding groove;

[0013] A connecting cavity connecting the slide grooves is provided in the outer ring, nano-lubricating oil is installed in the connecting cavity and the slide groove, an oil filling hole connected to the connecting cavity is provided on the outer ring, a one-way valve is arranged in the oil filling hole, a connecting hole penetrating the slider and a plurality of oil guide holes connected to the connecting hole are provided on the slider, and each of the oil guide holes is connected to each of the oil outlet holes during the sliding process of the slider.

[0014] By adopting the above technical solution, when the bearing is regularly disassembled and cleaned, the inside of the bearing is first cleaned and maintained. After the bearing is cleaned, the bearing is installed and clean nano-lubricant is injected into the oil filling hole to fill the connecting cavity and part of the slide groove with the nano-lubricant. The outer ring is rotated, and the outer ring rotates to generate acceleration. At this time, relative sliding occurs between the slider and the block, and the slider slides in the slide groove. When sliding to a certain extent, each oil guide hole is connected with the corresponding oil outlet hole, and the nano-lubricant in the oil guide hole flows out through each oil outlet hole into the rolling groove, so as to lubricate the rolling body, thereby protecting the rolling body and the inner wall of the rolling groove. At this time, the bearing can be reinstalled in the motor.

[0015] During the use of the motor, the nano-lubricant will be gradually consumed. When the nano-lubricant is consumed and it is not yet time for regular disassembly and maintenance, friction will occur between the rolling body and the high-speed rotating inner ring, causing vibration. The vibration will be transmitted to the outer ring, causing the slider in the outer ring to vibrate slightly. In this process, the oil guide hole and the oil outlet hole will be connected, thereby filling the rolling body with oil, thereby protecting the rolling body and reducing the friction loss between the rolling body and the rolling groove during operation.

[0016] Optionally, a plurality of groups of elastic members for elastically supporting the slider are respectively arranged at both ends of the slider in the sliding direction, and one end of each elastic member is fixedly connected to the side of the slider, and the other end abuts against the inner wall of the slide groove.

[0017] By adopting the above technical solution, the elastic member can elastically support the slider, so that the slider can move repeatedly in the slide groove more easily, and the slider can finally reset during the sliding process, so that the lubrication mechanism will not continue to discharge oil.

[0018] Optionally, a limiting groove connected to the sliding groove is provided on the outer ring of the side of the sliding groove, and a limiting block is provided on the side of the clamping block corresponding to the limiting groove, and the limiting block is clamped and fixed in the corresponding limiting groove.

[0019] By adopting the above technical solution, the limiting groove can limit the limiting block, so that the card block can be limited after being inserted to a certain depth, which is convenient for rapid installation of the card block.

[0020] Optionally, a locking member for locking the block to prevent it from falling off is provided on the outer ring.

[0021] By adopting the above technical solution, the locking member can lock the clamping of the clamping block, so that the clamping block will not fall out of the sliding groove, thereby improving the connection stability of the clamping block.

[0022] Optionally, the outer ring and the limiting block are provided with mutually communicating limiting holes, and the locking member includes a pin inserted into the limiting hole.

[0023] By adopting the above technical solution, the latch can be inserted into the limiting hole to fix the limiting block to the outer ring, so that the clamping block is fixed in the slide groove.

[0024] Optionally, sealing gaskets for sealing are provided at the gaps on both sides of the inner ring and the outer ring, and slots are provided on the inner walls of the inner ring and the outer ring, and two ends of the sealing gasket are respectively clamped in the slots.

[0025] By adopting the above technical solution, both ends of the sealing gasket can be respectively clamped in the clamping groove, so as to seal the gap between the inner ring and the outer ring, so that the bearing can be dust-proof and the internal nano-lubricant can be prevented from leaking.

[0026] Optionally, one end of the sealing gasket is slidably fitted with the corresponding card slot, and the other end is provided with two sealing parts, and the ends of the two sealing parts are slidably abutted against the inner wall of the corresponding card slot.

[0027] By adopting the above technical solution, one end of the sealing gasket is adapted to the slot, so that the sliding sealing between the sealing gasket and the slot can be made stronger, and the other end is not to affect the rotation between the inner ring and the outer ring. The two sealing parts can provide secondary protection for the nano-lubricant, making it difficult for the nano-lubricant to flow out of the bearing, thereby avoiding the leakage of the nano-lubricant as much as possible.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. When maintaining and inspecting the wear of bearings, some bearings will be disassembled and cleaned regularly. After the bearings are cleaned, fix the inner ring of the bearing and move the outer ring of the bearing. At this time, the outer ring will rotate. The rotating outer ring will drive the lubrication mechanism to discharge oil, so that the nano-lubricating oil flows out from each oil outlet, thereby lubricating the rolling element and extending the service life of the bearing;

[0030] 2. Nano-lubricating oil will be gradually consumed during use. At this time, friction will occur between the rolling element and the two rolling grooves. Since the inner ring is in a high-speed rotation state, the friction between the inner ring and the rolling element will be transmitted to the outer ring, causing the outer ring to vibrate. At this time, the lubrication mechanism in the outer ring can also automatically discharge oil. Although this level of oil discharge is not as much as the oil discharge of directly rotating the outer ring, it can reduce the friction loss between the rolling element and the rolling groove to a certain extent, and also extend the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 is a schematic diagram of the overall structure of the motor bearing in an embodiment of the present application;

[0033] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the motor bearing;

[0034] Figure 3 yes Figure 1 A side cross-sectional view of the middle motor bearing;

[0035] Figure 4 yes Figure 1 Schematic diagram of the structure at the middle and outer circles;

[0036] Figure 5 yes Figure 1 A front cross-sectional view of the middle motor bearing;

[0037] Figure 6 yes Figure 5 The enlarged view of point A in the middle;

[0038] Figure 7 yes Figure 1 Schematic diagram of the structure of the lubrication mechanism.

[0039] Figure numerals: 1. inner ring; 11. slot; 2. outer ring; 21. rolling groove; 22. oil outlet hole; 23. slide groove; 24. connecting chamber; 25. oil filling hole; 26. limit groove; 27. limit hole; 28. locking member; 3. rolling element; 4. retaining frame; 5. sealing gasket; 51. sealing part; 6. lubrication mechanism; 61. block; 611. limit block; 62. slider; 621. connecting hole; 622. oil guide hole; 7. elastic member. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-7 , further details of this application are given.

[0041] The embodiment of the present application discloses a nano-lubricating structure for a motor bearing.

[0042] A nano-lubricating structure for motor bearings, referring to Figure 1 , Figure 2 and Figure 3 , including an inner ring 1, an outer ring 2 rotatably mounted outside the inner ring 1, a plurality of rolling bodies 3 rollingly mounted between the inner ring 1 and the outer ring 2, and a retaining frame 4 for limiting the relative positions of the rolling bodies 3.

[0043] An annular rolling groove 21 is provided on the outer wall of the inner ring 1 and the inner wall of the outer ring 2 along the circumferential direction, and the rolling elements 3 are rollingly installed in the two rolling grooves 21 .

[0044] A plurality of oil outlet holes 22 are provided at intervals on the inner wall of the outer ring 2 , and a lubrication mechanism 6 is provided inside the outer ring 2 and is connected to the oil outlet holes 22 and is used to lubricate the rolling elements 3 .

[0045] Reference Figure 3 and Figure 4 A sealing gasket 5 for sealing is provided at the gaps on both sides of the inner ring 1 and the outer ring 2. A clamping groove 11 is provided on the inner walls of the inner ring 1 and the outer ring 2. The two ends of the sealing gasket 5 are respectively clamped in the clamping groove 11. One end of the sealing gasket 5 is slidably fitted with the corresponding clamping groove 11, and the other end is provided with two sealing parts 51. The ends of the two sealing parts 51 are slidably abutted against the inner walls of the corresponding clamping groove 11.

[0046] One end of the sealing gasket 5 is adapted to the slot, which can make the sliding sealing between the sealing gasket 5 and the slot 11 stronger, and the other end is used so as not to affect the rotation between the inner ring 1 and the outer ring 2. The two sealing parts 51 can provide secondary protection for the nano-lubricant, making it difficult for the nano-lubricant to flow out of the bearing, thereby avoiding the leakage of the nano-lubricant as much as possible.

[0047] Reference Figure 5 and Figure 6 The lubrication mechanism 6 includes a block 61 and a slider 62. The slider 62 is slidably mounted on the block 61 and can slide along the length direction of the block 61. A plurality of slide grooves 23 are spaced apart on the peripheral wall of the outer ring 2. The length direction of the slide grooves 23 extends along the circumference of the outer ring 2.

[0048] The block 61 and the slider 62 are both located in the slide groove 23, and the block 61 is fixed in the inner wall of the slide groove 23, and the slider 62 is movably installed in the slide groove 23. The slider 62 can slide along the length direction of the slide groove 23, and multiple groups of elastic members 7 for elastically supporting the slider 62 are respectively arranged at both ends of the sliding direction of the slider 62. The elastic member 7 adopts a spring, and one end of each spring is fixedly connected to the side of the slider 62, and the other end is movably abutted against the inner wall of the slide groove 23. The spring can be fixed at both ends, or one end can be fixed and the other end is not connected. The present application only adopts one of the suitable methods, and does not limit the structure.

[0049] Reference Figure 4 , Figure 6 and Figure 7 A connecting cavity 24 connecting the slide grooves 23 is provided in the outer ring 2, an oil filling hole 25 connected to the connecting cavity 24 is provided on the outer ring 2, a one-way valve is arranged in the oil filling hole 25, a connecting hole 621 penetrating the slider 62 and a plurality of oil guide holes 622 connected to the connecting hole 621 are provided on the slider 62, and each oil guide hole 622 is connected to each oil outlet hole 22 during the sliding process of the slider 62.

[0050] The nano-lubricating oil can be injected into the connecting cavity 24 and the slide groove 23 through the oil injection hole 25 for storage. The nano-lubricating oil is composed of the following components in mass percentage: 2.0-2.9% of nano-graphite particles, 3.5-5% of nano-metal copper particles, 3-8% of surfactant, 4-6% of dispersant, 1.5-2.5% of antioxidant and corrosion inhibitor, 2-4% of high-temperature antioxidant, 0.3-0.8% of pour point depressant, and the rest is base oil.

[0051] Nano-lubricant is a lubricant made by evenly dispersing nano-scale solid lubricant particles in lubricating oil through unique dispersing technology and advanced production processes. Nano-lubricant has a huge specific surface area and high activity. It can fill the tiny gaps on the contact surface of the bearing to form a lubricating film, reduce contact pressure and friction coefficient, and greatly improve the life and operating efficiency of the bearing.

[0052] In order to facilitate the position limiting of the block 61, refer to Figure 4 , Figure 6 and Figure 7 A limiting groove 26 communicating with the slide groove 23 is provided on the outer ring 2 on the side of the slide groove 23 , and a limiting block 611 is provided on the side of the clamping block 61 corresponding to the limiting groove 26 , and the limiting block 611 is clamped and fixed in the corresponding limiting groove 26 .

[0053] Furthermore, in order to enable the clamping block 61 to be more stably clamped and fixed on the outer ring 2, a locking member 28 is provided on the outer ring 2 to prevent the clamping block 61 from falling off. The locking member 28 is a latch. The outer ring 2 and the limit block 611 are provided with limit holes 27 that are interconnected, and the latch is inserted into the limit hole 27.

[0054] The implementation principle of the nano-lubricating structure of the motor bearing in the embodiment of the present application is as follows: when the bearing is regularly disassembled and cleaned, the inside of the bearing is first cleaned and maintained. After the bearing is cleaned, the bearing is installed and clean lubricating oil is injected into the oil filling hole 25 to fill the connecting cavity 24 and part of the slide groove 23 with the lubricating oil;

[0055] The outer ring 2 rotates, and the rotation of the outer ring 2 generates acceleration. At this time, relative sliding occurs between the slider 62 and the block 61. The slider 62 slides in the slide groove 23. When sliding to a certain extent, each oil guide hole 622 is connected with the corresponding oil outlet hole 22, and the lubricating oil in the oil guide hole 622 flows out into the rolling groove 21 through each oil outlet hole 22, so as to lubricate the rolling element 3, thereby protecting the rolling element 3 and the inner wall of the rolling groove 21. At this time, the bearing can be reinstalled into the motor;

[0056] During the use of the motor, the lubricating oil will be gradually consumed. When the lubricating oil is consumed and it is not yet time for regular disassembly and maintenance, friction will occur between the rolling body 3 and the high-speed rotating inner ring 1, resulting in vibration. The vibration will be transmitted to the outer ring 2, causing the slider 62 in the outer ring 2 to vibrate slightly. In this process, the oil guide hole 622 and the oil outlet hole 22 will also be connected, so that the rolling body 3 is filled with oil, thereby protecting the rolling body 3 and reducing the friction loss between the rolling body 3 and the rolling groove 21 during operation.

[0057] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0058] The above are all optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A nano-lubricating structure for a motor bearing, characterized in that: The invention comprises an inner ring (1), an outer ring (2) rotatably sleeved outside the inner ring (1), a plurality of rolling bodies (3) rollingly mounted between the inner ring (1) and the outer ring (2), and a retaining frame (4) for limiting the relative position of each of the rolling bodies (3); an annular rolling groove (21) is provided on the outer side wall of the inner ring (1) and the inner side wall of the outer ring (2) along the circumferential direction, and the rolling bodies (3) are rollingly mounted in the two rolling grooves (21); A plurality of oil outlet holes (22) are provided at intervals on the inner wall of the outer ring (2), and a lubrication mechanism (6) is provided inside the outer ring (2) and is connected to the oil outlet holes (22) and is used to lubricate the rolling element (3).

2. The nano-lubricating structure for a motor bearing according to claim 1, characterized in that: The lubrication mechanism (6) comprises a block (61) and a slider (62), wherein the slider (62) is slidably mounted on the block (61) and is capable of sliding along the length direction of the block (61), and a plurality of slide grooves (23) are arranged at intervals on the peripheral wall of the outer ring (2), and the length direction of the slide grooves (23) extends along the circumference of the outer ring (2); The clamping block (61) and the sliding block (62) are both located in the sliding groove (23), and the clamping block (61) is clamped and fixed in the inner wall of the sliding groove (23), and the sliding block (62) is movably installed in the sliding groove (23), and the sliding block (62) can slide along the length direction of the sliding groove (23); The outer ring (2) is provided with a connecting cavity (24) for connecting the slide grooves (23), and nano-lubricating oil is installed in the connecting cavity (24) and the slide grooves (23). The outer ring (2) is provided with an oil injection hole (25) connected with the connecting cavity (24), and a one-way valve is arranged in the oil injection hole (25). The slider (62) is provided with a connecting hole (621) penetrating the slider (62) and a plurality of oil guide holes (622) connected with the connecting hole (621), and each of the oil guide holes (622) is connected with each of the oil outlet holes (22) during the sliding process of the slider (62).

3. The nano-lubricating structure for a motor bearing according to claim 2, characterized in that: A plurality of groups of elastic members (7) for elastically supporting the slider (62) are respectively arranged at both ends of the slider (62) in the sliding direction, and each of the elastic members (7) has one end fixedly connected to the side of the slider (62) and the other end abutting against the inner wall of the slide groove (23).

4. The nano-lubricating structure for a motor bearing according to claim 2, characterized in that: A limiting groove (26) communicating with the sliding groove (23) is provided on the outer ring (2) on the side of the sliding groove (23); a limiting block (611) is provided on the side of the clamping block (61) corresponding to the limiting groove (26); and the limiting block (611) is clamped and fixed in the corresponding limiting groove (26).

5. The nano-lubricating structure for a motor bearing according to claim 4, characterized in that: The outer ring (2) is provided with a locking piece (28) for locking the clamping block (61) to prevent it from falling off.

6. The nano-lubricating structure for a motor bearing according to claim 5, characterized in that: The outer ring (2) and the limiting block (611) are provided with mutually communicating limiting holes (27), and the locking member (28) comprises a latch pin inserted into the limiting hole (27).

7. The motor bearing nano-lubricating structure according to claim 1, characterized in that: Sealing gaskets (5) for sealing are provided at the gaps on both sides of the inner ring (1) and the outer ring (2); inner walls of the inner ring (1) and the outer ring (2) are provided with clamping grooves (11); and two ends of the sealing gasket (5) are respectively clamped in the clamping grooves (11).

8. The nano-lubricating structure for a motor bearing according to claim 7, characterized in that: One end of the sealing gasket (5) is slidably matched with the corresponding card slot (11), and the other end is provided with two sealing parts (51), and the ends of the two sealing parts (51) are slidably abutted against the inner wall of the corresponding card slot (11).

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