Self-adaptive damping bearing

Abstract

The invention relates to the field of damping bearings, and discloses a self-adaptive damping bearing which comprises an outer shaft, an inner shaft assembly is arranged on the inner side of the outer shaft, an elastic adjusting assembly is arranged between the outer shaft and the inner shaft assembly, a lubricating oil injection assembly is arranged on the outer shaft, and the lubricating oil injection assembly communicates with a gap between the outer shaft and the inner shaft assembly. The adjusting spring in the elastic adjusting assembly can play a role in shock absorption when the bearing rotates, and the elastic force of the adjusting spring can be changed through the adjusting bolt, so that the adjusting spring can adaptively absorb shock force under different conditions so as to adapt to different working conditions and shock environments, and the stability and reliability of the bearing are improved.

Description

Technical Field

[0001] The present invention relates to the field of shock-absorbing bearings, and in particular to an adaptive shock-absorbing bearing. Background Art

[0002] In a wide range of modern industrial production and mechanical applications, bearings, as the core components ensuring the smooth operation of mechanical parts, play a decisive role in the overall performance of equipment. With the rapid development of technology and the continuous progress of the industrial process, various mechanical equipment is evolving towards high speed, high precision, high load, and long life, which undoubtedly poses extremely stringent requirements on the comprehensive performance of bearings.

[0003] Under numerous actual working conditions, the vibration interference suffered during equipment operation becomes a key factor affecting its performance and stability. Take wind power generation equipment as an example. The huge blades rotate at different wind speeds, causing the bearings to bear complex and intense vibrations. If these vibrations cannot be effectively alleviated, it will not only lead to a reduction in power generation efficiency but also may cause premature damage to key components such as blades and gearboxes, significantly increasing maintenance costs and downtime, and seriously affecting the stability of power supply. In the field of rail transit, during the high-speed operation of trains, the uneven contact between the wheels and the track, the curvature change of the track, etc., will cause the bearings to face frequent and strong vibration impacts. This will not only reduce the running smoothness and riding comfort of the train but also pose a potential threat to the safety of train operation. In addition, in heavy machinery operation scenarios such as mining and construction, mechanical equipment needs to frequently deal with complex terrains and high-intensity workloads, and the bearings it is equipped with are constantly under huge vibrations and impacts. The shock-absorbing ability of conventional bearings far from meets the requirements of these harsh working conditions.

[0004] At the same time, the lubrication condition of bearings is also crucial for their service life and working performance. In industries with extremely high precision requirements such as electronic manufacturing, if the micro-bearings inside the equipment suffer from wear due to insufficient lubrication, even a very small amount of wear may lead to deviations in product manufacturing precision, resulting in a large number of defective products, seriously affecting the production efficiency and product quality of enterprises. For equipment working in special environments such as chemical industry and food processing, its bearings not only have to bear the load of normal operation but also need to cope with adverse factors such as high temperature, high humidity, and corrosive media. In these harsh environments, lubricating oil is extremely easy to deteriorate and lose, and traditional lubrication methods are difficult to ensure that the bearings continuously obtain good lubrication, thus exacerbating the wear of the bearings, significantly shortening the maintenance cycle of the equipment, increasing the risks and costs of equipment operation. Therefore, we propose an adaptive shock-absorbing bearing. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an adaptive shock-absorbing bearing, which solves the above problems.

[0006] To achieve the above object, the present invention provides the following technical solution: an adaptive shock-absorbing bearing, including an outer shaft, an inner shaft assembly is arranged inside the outer shaft, an elastic adjustment assembly is arranged between the outer shaft and the inner shaft assembly, a lubricating oil injection assembly is arranged on the outer shaft, and the lubricating oil injection assembly communicates with the gap between the outer shaft and the inner shaft assembly.

[0007] Preferably, the inner shaft assembly includes an inner shaft, arc-shaped connection assemblies located on both sides of the inner shaft, and a ring-shaped protrusion integrally formed on the outer side of the inner shaft. A ring-shaped groove is formed on the ring-shaped protrusion, and a rotating bead is arranged inside the ring-shaped groove, and the rotating bead is kept in contact with the inner wall of the outer shaft.

[0008] Preferably, the arc-shaped connection assembly includes an inner shaft ring connection block and a ring connection block. The ring connection block is integrally formed at the end of the inner shaft ring connection block, and the joint of the inner shaft ring connection block and the ring connection block fits the step surface of the joint of the inner shaft and the ring-shaped protrusion. A plurality of groups of through holes are equidistantly arranged on both sides of the inner shaft ring connection block and the inner shaft, and a bolt locking assembly is arranged inside the through holes.

[0009] Preferably, the bolt locking assembly locks a bolt and a locking threaded tube, and the locking bolt is threadedly connected with the locking threaded tube.

[0010] Preferably, an inner wall ring block is integrally formed at the inner end of the outer shaft, and the inner wall of the inner ring of the inner wall ring block fits the inner shaft ring connection block, and the elastic adjustment assembly is arranged in the gap between the inner wall ring block and the inner shaft.

[0011] Preferably, the elastic adjustment assembly includes an adjustment assembly and an adjustment spring. An adjustment spring is arranged on one side of the adjustment assembly, and the other end of the adjustment spring is connected to the inner shaft.

[0012] Preferably, the adjustment assembly includes a pressing plate and an adjustment bolt. The pressing plate is annular, and the pressing plate is sleeved outside the inner shaft ring connection block. The other side of the pressing plate fits the inner wall of the outer shaft. One side of the pressing plate fits the adjustment spring. A plurality of groups of bolt grooves are formed on the inner wall ring block, and an adjustment bolt is threadedly installed inside the bolt grooves. One end of the adjustment bolt extends into the outer shaft. A rotating ring block is fixedly installed at the position of the pressing plate corresponding to the adjustment bolt, and the rotating ring block is rotatably connected to the end of the adjustment bolt.

[0013] Preferably, a sealing bead groove is formed on the inner wall ring block, a flow channel is formed on one side of the sealing bead groove, the flow channel is located inside the outer shaft, and the flow channel communicates with the inside of the outer shaft. The position of the adjustment spring corresponds to the rotating bead, and a lubricating oil injection assembly is arranged inside the sealing bead groove.

[0014] Preferably, the lubricating oil injection assembly includes a guide rod, a socket spring, a plugging bead, and a limit block. The outlet end of the plugging bead groove is conical. A guide rod is fixedly installed on the inner wall of the plugging bead groove. A socket spring is sleeved on the outer side of the guide rod. An internal groove is formed inside the plugging bead. One end of the guide rod is inserted into the internal groove. A limit block is fixedly installed at the end of the guide rod located inside the internal groove. The plugging bead is in contact with the socket spring.

[0015] Compared with the prior art, the present invention provides an adaptive shock-absorbing bearing, which has the following beneficial effects: Good shock-absorbing effect: The adjusting spring in the elastic adjusting assembly can play a role in absorbing shock when the bearing rotates. The elastic force of the adjusting spring can be changed through the adjusting bolt, so that it can adapt to absorb shock forces in different situations to adapt to different working conditions and vibration environments, and improve the stability and reliability of the bearing.

[0016] Convenient for installation and maintenance: The inner shaft assembly is installed through the arc-shaped connecting assembly and the bolt locking assembly, and the installation process is simple and convenient. The inner shaft annular connecting block and the annular connecting block of the arc-shaped connecting assembly are in contact with the step surfaces of the inner shaft and the annular protrusion, and are connected and fixed through the locking bolt and the locking threaded tube, which is convenient for disassembly and maintenance. In addition, the lubricating oil injection assembly is convenient for lubricating the rotating beads, ensuring the good operation of the bearing and extending the service life.

[0017] High rotational flexibility: An annular groove is provided on the annular protrusion on the outer side of the inner shaft, and the internal rotating beads are in contact with the inner wall of the outer shaft. When the shaft rotates, the rotating beads roll, reducing the friction between the inner shaft and the outer shaft, and improving the rotational flexibility and efficiency.

[0018] Compact and reasonable structure: The designs of each component are compact. The inner wall annular block at the inner end of the outer shaft is in contact with the inner shaft annular connecting block, and the elastic adjusting assembly is arranged in the gap between the two. The overall structural layout is reasonable, occupying a small space, and is suitable for various equipment and scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a front view schematic diagram of the present invention; Figure 3 is Figure 2 the A-A cross-sectional schematic diagram in Figure 4 is Figure 3 the partial enlarged schematic diagram at B in Figure 5 is Figure 3 the partial enlarged schematic diagram at C in Figure 6 is Figure 2 the D-D cross-sectional schematic diagram in Figure 7 is Figure 6 a partial enlarged schematic view of location E in

[0020] In the figure: 1. Outer shaft; 2. Inner shaft; 3. Annular protrusion; 4. Annular groove; 5. Rotating bead; 6. Inner shaft annular connection block; 7. Annular connection block; 8. Inner wall annular block; 9. Bolt groove; 10. Adjusting bolt; 11. Extrusion plate; 12. Rotating annular block; 13. Adjusting spring; 14. Through hole; 15. Locking threaded tube; 16. Locking bolt; 17. Plug bead groove; 18. Guide rod; 19. Socket spring; 20. Plug bead; 21. Internal groove; 22. Limiting block; 23. Flow channel. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-7 , an adaptive shock-absorbing bearing, including an outer shaft 1, an inner shaft assembly is arranged inside the outer shaft 1, an elastic adjustment assembly is arranged between the outer shaft 1 and the inner shaft assembly, a lubricating oil injection assembly is arranged on the outer shaft 1, and the lubricating oil injection assembly communicates with the gap between the outer shaft 1 and the inner shaft assembly.

[0023] Furthermore, the inner shaft assembly includes an inner shaft 2, arc connection assemblies located on both sides of the inner shaft 2, and an annular protrusion 3 integrally formed on the outer side of the inner shaft 2. An annular groove 4 is opened on the annular protrusion 3, and a rotating bead 5 is arranged inside the annular groove 4. The rotating bead 5 is in contact with the inner wall of the outer shaft 1. When the shaft is inserted through the inner shaft 2 and then rotated, the rotating bead 5 rotates, and the inner shaft 2 and the annular protrusion 3 rotate.

[0024] Furthermore, the arc connection assembly includes an inner shaft annular connection block 6 and an annular connection block 7. The annular connection block 7 is integrally formed at the end of the inner shaft annular connection block 6, and the joint of the inner shaft annular connection block 6 and the annular connection block 7 fits the step surface of the joint of the inner shaft 2 and the annular protrusion 3. A plurality of groups of through holes 14 are equidistantly opened on both the inner shaft annular connection block 6 and the inner shaft 2 on both sides, and a bolt locking assembly is arranged inside the through holes 14.

[0025] Further, the bolt locking assembly locks the bolt 16 and the locking threaded tube 15. The locking bolt 16 is threadedly connected to the locking threaded tube 15. When installation is required, the two arc-shaped connecting assemblies are respectively placed on both sides of the inner shaft 2. At the same time, the joint of the inner shaft annular connecting block 6 and the annular connecting block 7 is fitted to the stepped surface at the joint of the inner shaft 2 and the annular protrusion 3. Subsequently, the locking threaded tube 15 and the locking bolt 16 are respectively inserted into the through holes 14 opened on the inner shaft 2 from the through holes 14 opened on the inner shaft annular connecting blocks 6 on both sides, and then the locking bolt 16 is threadedly connected to the locking threaded tube 15.

[0026] Further, an inner wall annular block 8 is integrally formed at the inner end of the outer shaft 1. The inner wall of the inner circle of the inner wall annular block 8 is kept in contact with the inner shaft annular connecting block 6. The elastic adjustment assembly is arranged in the gap between the inner wall annular block 8 and the inner shaft 2.

[0027] Further, the elastic adjustment assembly includes an adjustment assembly and an adjustment spring 13. One side of the adjustment assembly is provided with the adjustment spring 13. The other end of the adjustment spring 13 is connected to the inner shaft 2. The setting of the adjustment spring 13 can play a role in shock absorption when the bearing rotates, and the adjustment spring 13 deforms and buffers.

[0028] Further, the adjustment assembly includes an extrusion plate 11 and an adjustment bolt 10. The extrusion plate 11 is annular, and the extrusion plate 11 is sleeved on the outside of the inner shaft annular connecting block 6. The other side of the extrusion plate 11 is kept in contact with the inner wall of the outer shaft 1. One side of the extrusion plate 11 is in contact with the adjustment spring 13. A plurality of bolt grooves 9 are opened on the inner wall annular block 8. The adjustment bolt 10 is threadedly installed in the bolt grooves 9. One end of the adjustment bolt 10 extends into the inside of the outer shaft 1. A rotating annular block 12 is fixedly installed at the position of the extrusion plate 11 corresponding to the adjustment bolt 10. The rotating annular block 12 is rotatably connected to the end of the adjustment bolt 10. When different shock absorption conditions are required, the adjustment bolt 10 is rotated. One end of the adjustment bolt 10 moves into the inside of the outer shaft 1. At this time, the extrusion plate 11 is extruded and moves towards the inner shaft 2. Subsequently, the adjustment spring 13 is compressed, changing the elastic force of the adjustment spring 13. Therefore, when the bearing vibrates, it further adapts to absorb the vibration force in different situations.

[0029] Further, a plug bead groove 17 is opened on the inner wall annular block 8. A flow channel 23 is opened on one side of the plug bead groove 17. The flow channel 23 is located inside the outer shaft 1 and communicates with the inside of the outer shaft 1. The position of the adjustment spring 13 corresponds to the rotating bead 5. A lubricating oil injection assembly is arranged inside the plug bead groove 17. When lubricating oil needs to be injected, the lubricating oil injection assembly is opened, and lubricating oil is injected into the plug bead groove 17. The lubricating oil enters the inside of the outer shaft 1 through the plug bead groove 17 and the flow channel 23 to lubricate the rotating bead 5.

[0030] Further, the lubricating oil injection assembly includes a guide rod 18, a socket spring 19, a plugging bead 20, and a limit block 22. The outlet end of the plugging bead groove 17 is conical. A guide rod 18 is fixedly installed on the inner wall of the plugging bead groove 17. A socket spring 19 is sleeved outside the guide rod 18. An internal groove 21 is formed inside the plugging bead 20. One end of the guide rod 18 is inserted into the internal groove 21. A limit block 22 is fixedly installed at the end of the guide rod 18 located inside the internal groove 21. The plugging bead 20 is in contact with the socket spring 19. When the socket spring 19 rebounds normally, at this time, the plugging bead 20 remains in contact with the conical inner wall of the plugging bead groove 17. When lubricating oil needs to be injected, the plugging bead 20 is pressed inward. At this time, the socket spring 19 is compressed. Subsequently, the gap between the plugging bead 20 and the inner wall of the plugging bead groove 17 is opened. Then, lubricating oil is injected. The lubricating oil is injected into the plugging bead groove 17. The lubricating oil enters the inside of the outer shaft 1 through the plugging bead groove 17 and the flow channel 23, and lubricating oil is added to the rotating beads 5.

[0031] Structural description: Outer shaft 1: It is the outermost structure of the bearing. An inner shaft assembly is arranged inside it. A lubricating oil injection assembly is arranged on the outer shaft 1, which is used to connect the gap between the outer shaft 1 and the inner shaft assembly and provide a lubricating oil injection channel for the internal structure. An inner wall annular block 8 is integrally formed at the inner end of the outer shaft 1, which plays a role in structural support and cooperation with other components.

[0032] Inner shaft 2: The core part of the inner shaft assembly. The shaft passes through the inner shaft 2. Arc-shaped connection assemblies are arranged on both sides of the inner shaft 2. An annular protrusion 3 is integrally formed on the outside. The inner shaft 2 and the annular protrusion 3 rotate together when the shaft rotates. A plurality of groups of through holes 14 are equally spaced on the inner shaft 2, which are used to cooperate with the through holes 14 on the arc-shaped connection assembly and are connected and fixed through a bolt locking assembly.

[0033] Annular protrusion 3: Integrally formed on the outside of the inner shaft 2. An annular groove 4 is formed on the annular protrusion 3. Rotating beads 5 are arranged inside the annular groove 4. The rotating beads 5 are in contact with the inner wall of the outer shaft 1. During the rotation of the shaft, the rotating beads 5 rotate in the annular groove 4, thereby driving the inner shaft 2 and the annular protrusion 3 to rotate.

[0034] Annular groove 4: Formed on the annular protrusion 3, which is used to accommodate the rotating beads 5 and provide space for the rotation of the rotating beads 5, so that the rotating beads 5 can contact and roll on the inner side with the inner wall of the outer shaft 1 when the shaft rotates.

[0035] Rotating beads 5: Located inside the annular groove 4, in contact with the inner wall of the outer shaft 1, and rotate during the rotation of the shaft, which plays a role in reducing the friction between the inner shaft assembly and the outer shaft 1, so that the inner shaft 2 and the annular protrusion 3 can rotate more smoothly.

[0036] Inner shaft annular connection block 6: A part of the arc connection assembly, located on both sides of the inner shaft 2. Multiple groups of through holes 14 are evenly arranged on the inner shaft annular connection block 6, corresponding to the through holes 14 on the inner shaft 2, and are connected and fixed to the inner shaft 2 through a bolt locking assembly. An annular connection block 7 is integrally formed at the end of the inner shaft annular connection block 6, and the joint between the inner shaft annular connection block 6 and the annular connection block 7 fits the step surface at the joint of the inner shaft 2 and the annular protrusion 3, playing a role in positioning and connection.

[0037] Annular connection block 7: Integrally formed at the end of the inner shaft annular connection block 6, jointly constituting the arc connection assembly with the inner shaft annular connection block 6. Its joint fits the step surface at the joint of the inner shaft 2 and the annular protrusion 3, and is fixedly connected to the inner shaft 2 through a bolt locking assembly to enhance the overall stability of the inner shaft assembly.

[0038] Inner wall annular block 8: Integrally formed at the inner end of the outer shaft 1, and its inner wall fits the inner shaft annular connection block 6, playing a role in structural support and positioning. Multiple groups of bolt grooves 9 are provided on the inner wall annular block 8 for installing adjustment bolts 10, and a plug bead groove 17 is also provided for setting a lubricating oil injection assembly.

[0039] Bolt groove 9: Provided on the inner wall annular block 8, and an adjustment bolt 10 is threadedly installed inside. By screwing the adjustment bolt 10 in and out, the pressing plate 11 is pushed to move, thereby changing the elastic force of the adjustment spring 13 to adapt to different shock absorption requirements.

[0040] Adjustment bolt 10: Installed in the bolt groove 9, one end extends into the interior of the outer shaft 1 and is rotatably connected to a rotating annular block 12 fixedly installed on the pressing plate 11. When the adjustment bolt 10 is rotated, one end moves into the interior of the outer shaft 1, pressing the pressing plate 11, and further compressing the adjustment spring 13 to adjust the elastic force of the adjustment spring 13.

[0041] Pressing plate 11: An annular structure, sleeved outside the inner shaft annular connection block 6, and the other side fits the inner wall of the outer shaft 1. One side of the pressing plate 11 fits the adjustment spring 13, and under the action of the adjustment bolt 10, the pressing plate 11 moves towards or away from the inner shaft 2, thereby compressing or releasing the adjustment spring 13.

[0042] Rotating annular block 12: Fixedly installed at the position of the pressing plate 11 corresponding to the adjustment bolt 10, and rotatably connected to the end of the adjustment bolt 10, enabling the adjustment bolt 10 to push the pressing plate 11 to move when rotated, without affecting the rotation of the adjustment bolt 10 due to the friction between the two.

[0043] Adjustment spring 13: It is set in the gap between the inner wall annular block 8 and the inner shaft 2, with one end in contact with the extrusion plate 11 and the other end connected to the inner shaft 2. The adjustment spring 13 can absorb shock when the bearing rotates, and reduce vibration transmission through deformation buffering. And the compression degree can be changed by adjusting the bolt 10 and the extrusion plate 11, thereby adjusting the elastic force to adapt to the vibration force in different situations.

[0044] Through holes 14: Multiple groups of through holes 14 are evenly spaced on the inner shaft 2 and the inner shaft annular connecting blocks 6 on both sides for inserting locking threaded tubes 15 and locking bolts 16. The arc connection assembly is connected and fixed to the inner shaft 2 through the bolt locking assembly to ensure the overall structural stability of the inner shaft assembly.

[0045] Locking threaded tube 15: a part of the bolt locking assembly, threadedly connected with the locking bolt 16. During installation, the locking threaded tube 15 is inserted from the through hole 14 opened on the inner shaft annular connecting block 6 on one side into the through hole 14 opened on the inner shaft 2, and is threadedly connected with the locking bolt 16 inserted from the other side, so as to realize the fixed connection between the arc connection assembly and the inner shaft 2.

[0046] Locking bolt 16: a part of the bolt locking assembly, threadedly connected with the locking threaded tube 15. During installation, the through hole 14 opened on the inner shaft annular connecting block 6 on the other side is inserted into the through hole 14 opened on the inner shaft 2, and connected with the locking threaded tube 15, playing the role of fastening the connection.

[0047] The plugging bead groove 17 is provided on the inner wall annular block 8, and a flow channel 23 is provided on one side, and the flow channel 23 is connected to the inside of the outer shaft 1. A lubricating oil injection assembly is provided inside the plugging bead groove 17 for injecting lubricating oil, and the lubricating oil enters the inside of the outer shaft 1 through the plugging bead groove 17 and the flow channel 23 to lubricate the rotating ball 5.

[0048] Guide rod 18: fixedly mounted on the inner wall of the blocking bead groove 17, with a sleeve spring 19 sleeved on the outer side. One end of the guide rod 18 is inserted into the inner groove 21 opened inside the blocking bead 20, and a limit block 22 is fixedly mounted on one end inside the inner groove 21, which is used to guide the movement of the blocking bead 20 and prevent it from leaving the blocking bead groove 17.

[0049] Sleeve spring 19: Sleeved on the outside of guide rod 18, one end of which is fitted with blocking bead 20. When the sleeve spring 19 rebounds normally, the blocking bead 20 is kept in contact with the tapered inner wall of the blocking bead groove 17 to prevent lubricating oil leakage; when lubricating oil needs to be injected, the blocking bead 20 is pressed inward, the sleeve spring 19 is compressed, and the gap between the blocking bead 20 and the inner wall of the blocking bead groove 17 is opened to inject lubricating oil.

[0050] Plugging bead 20: An internal groove 21 is provided inside, which cooperates with the guide rod 18 and fits with the socket spring 19. The plugging bead 20 cooperates with the tapered inner wall of the plugging bead groove 17. Under the action of the socket spring 19, it can plug the outlet of the plugging bead groove 17 to prevent lubricating oil from leaking; when pressed, it can open a gap to allow lubricating oil to be injected.

[0051] Internal groove 21: It is opened inside the plugging bead 20 and is used to accommodate one end of the guide rod 18. A limiting block 22 is fixedly installed at one end of the guide rod 18 located inside the internal groove 21, enabling the plugging bead 20 to move under the guidance of the guide rod 18.

[0052] Limiting block 22: It is fixedly installed at one end of the guide rod 18 located inside the internal groove 21, preventing the plugging bead 20 from detaching from the guide rod 18 and ensuring the normal operation of the lubricating oil injection assembly.

[0053] Flow channel 23: It is located inside the outer shaft 1, one end is connected to the plugging bead groove 17, and the other end is connected to the inside of the outer shaft 1. When injecting lubricating oil, the lubricating oil enters the inside of the outer shaft 1 through the plugging bead groove 17 and the flow channel 23, reaches the rotating bead 5, and lubricates the rotating bead 5.

[0054] Working principle: When installation is required, the two arc-shaped connection components are respectively placed on both sides of the inner shaft 2. At the same time, the connection parts of the inner shaft annular connection block 6 and the annular connection block 7 are fitted with the step surfaces at the connection parts of the inner shaft 2 and the annular protrusion 3. Subsequently, the locking threaded pipe 15 and the locking bolt 16 are respectively inserted into the through holes 14 opened on the inner shaft annular connection block 6 on both sides and into the through holes 14 opened on the inner shaft 2. Then, the locking bolt 16 is threadedly connected to the locking threaded pipe 15. When the socket spring 19 rebounds normally, at this time, the plugging bead 20 remains in contact with the tapered inner wall of the plugging bead groove 17. When lubricating oil needs to be injected, the plugging bead 20 is pressed inward. At this time, the socket spring 19 is compressed, and then the gap between the plugging bead 20 and the inner wall of the plugging bead groove 17 is opened. Subsequently, lubricating oil is injected. The lubricating oil is injected into the inside of the plugging bead groove 17, and the lubricating oil enters the inside of the outer shaft 1 through the plugging bead groove 17 and the flow channel 23 to add lubricating oil to the rotating bead 5.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive shock-absorbing bearing, comprising an outer shaft (1), characterized in that, An inner shaft assembly is provided inside the outer shaft (1). An elastic adjustment assembly is provided between the outer shaft (1) and the inner shaft assembly. A lubricating oil injection assembly is provided on the outer shaft (1), and the lubricating oil injection assembly communicates with the gap between the outer shaft (1) and the inner shaft assembly.

2. The self - adaptive shock - absorbing bearing according to claim 1, wherein: The inner shaft assembly includes an inner shaft (2), arc-shaped connection assemblies located on both sides of the inner shaft (2), and an annular protrusion (3) integrally formed on the outer side of the inner shaft (2). An annular groove (4) is formed on the annular protrusion (3), and a rotating bead (5) is arranged inside the annular groove (4), and the rotating bead (5) is kept in contact with the inner wall of the outer shaft (1).

3. The self - adaptive shock - absorbing bearing according to claim 2, wherein: The arc-shaped connection assembly includes an inner shaft annular connection block (6) and an annular connection block (7). The annular connection block (7) is integrally formed at the end of the inner shaft annular connection block (6), and the joint of the inner shaft annular connection block (6) and the annular connection block (7) is in contact with the step surface at the joint of the inner shaft (2) and the annular protrusion (3). A plurality of groups of through holes (14) are equidistantly arranged on both sides of the inner shaft annular connection block (6) and the inner shaft (2), and a bolt locking assembly is arranged inside the through holes (14).

4. The self - adaptive shock - absorbing bearing according to claim 3, characterized in that: The bolt locking assembly locks a locking bolt (16) and a locking threaded pipe (15), and the locking bolt (16) is threadedly connected with the locking threaded pipe (15).

5. An adaptive shock-absorbing bearing according to claim 2, characterized in that: An inner wall annular block (8) is integrally formed at the inner side end of the outer shaft (1), and the inner wall of the inner circle of the inner wall annular block (8) is kept in contact with the inner shaft annular connection block (6). The elastic adjustment assembly is arranged in the gap between the inner wall annular block (8) and the inner shaft (2).

6. The self - adaptive shock - absorbing bearing according to claim 5, wherein: The elastic adjustment assembly includes an adjustment assembly and an adjustment spring (13). One side of the adjustment assembly is provided with the adjustment spring (13), and the other end of the adjustment spring (13) is connected to the inner shaft (2).

7. An adaptive shock-absorbing bearing according to claim 6, characterized in that: The adjustment assembly includes a pressing plate (11) and an adjustment bolt (10). The pressing plate (11) is annular, and the pressing plate (11) is sleeved outside the inner shaft annular connection block (6). The other side of the pressing plate (11) is in contact with the inner wall of the outer shaft (1). One side of the pressing plate (11) is in contact with the adjustment spring (13). A plurality of groups of bolt grooves (9) are formed on the inner wall annular block (8), and the adjustment bolt (10) is threadedly installed inside the bolt grooves (9). One end of the adjustment bolt (10) extends into the inside of the outer shaft (1). A rotating annular block (12) is fixedly installed at the position of the pressing plate (11) corresponding to the adjustment bolt (10), and the rotating annular block (12) is rotatably connected to the end of the adjustment bolt (10).

8. An adaptive shock-absorbing bearing according to claim 5, characterized in that: A sealing bead groove (17) is formed on the inner wall annular block (8). A flow channel (23) is formed on one side of the sealing bead groove (17). The flow channel (23) is located inside the outer shaft (1), and the flow channel (23) communicates with the inside of the outer shaft (1). The position of the adjustment spring (13) corresponds to that of the rotating bead (5), and a lubricating oil injection assembly is arranged inside the sealing bead groove (17).

9. An adaptive shock-absorbing bearing according to claim 8, characterized in that: The lubricating oil injection assembly includes a guide rod (18), a socket spring (19), a plugging bead (20), and a limit block (22). The outlet end of the plugging bead groove (17) is conical. A guide rod (18) is fixedly installed on the inner wall of the plugging bead groove (17). A socket spring (19) is sleeved on the outer side of the guide rod (18). An internal groove (21) is formed inside the plugging bead (20). One end of the guide rod (18) is inserted into the internal groove (21). A limit block (22) is fixedly installed at the end of the guide rod (18) located inside the internal groove (21). The plugging bead (20) is in contact with the socket spring (19).

Images