High-strength combined gear shaft

Abstract

The utility model belongs to the field of gear shafts, and particularly relates to a high-strength combined gear shaft which is characterized in that a through hole is formed in the side wall of a gear, a first gear shaft is arranged in the through hole in a sliding mode, and a second gear shaft is arranged on one side of the first gear shaft in the through hole in a sliding mode; a clamping assembly capable of clamping the first gear shaft and the second gear shaft into the through hole is arranged on the outer circle face of the second gear shaft, two clamping net plates are arranged in the through hole between the first gear shaft and the second gear shaft in a sliding mode, an oil absorption sponge is arranged between the two clamping net plates, and lubricating oil is stored in the oil absorption sponge; and a plurality of elastic connecting clamping pieces capable of elastically supporting the two clamping net plates are connected between the two clamping net plates. Through the arrangement of the clamping net plate and other assemblies, the multiple second clamping blocks can be clamped and limited in the multiple second clamping blocks through the elastic tensioning force of the elastic connecting clamping piece, and meanwhile lubricating oil can be continuously released along with rotation of the gear shaft.

Description

Technical Field

[0001] This utility model belongs to the field of gear shaft technology, and in particular relates to a high-strength combined gear shaft. Background Technology

[0002] Gear shafts are core components in mechanical transmission systems, integrating gears and shafts. They function to transmit power, change speed / torque, and adjust the direction of motion. Essentially, they are made by forging, casting, or machining gears (such as spur gears, helical gears, and bevel gears) and supporting shafts into a single part or a detachable structure. They are widely used in the automotive, machine tool, and aerospace industries.

[0003] Patent application CN202322580152.0 discloses a high-strength combined gear shaft, including a gear, with detachable combined gear shafts on both sides of the gear. The gear shaft includes a first gear shaft component and a second gear shaft component, with a snap-fit ​​assembly on the side of the first and second gear shaft components near the gear. The snap-fit ​​assembly includes at least two locking blocks that rotate within the gear shaft. A torsion spring is provided on the rotation shaft of each locking block, and a hoop is fitted on the outer periphery of each locking block. A first retaining ring and a second retaining ring are symmetrically provided on the inner wall of the gear. The gear and gear shaft can be locked by the locking blocks abutting against the first retaining ring. This utility model allows the gear shaft to be directly inserted into the gear, locked by the retaining ring, and then the retaining ring to be loosened. The gear shaft can be removed by pushing and pulling, without the need for interference fit, thus avoiding damage to the gear and shaft.

[0004] Existing technologies, through the use of snap-fit ​​components and retaining rings, facilitate the installation and replacement of gears and gear shafts, but still have shortcomings:

[0005] First, existing combined gear shafts use components such as torsion springs to clamp and fix the gear shaft and gear together. Under the high-intensity working environment of the gear shaft, it is prone to damage, which leads to frequent replacement of gear shaft parts, affecting the normal operation of the machine and increasing maintenance costs.

[0006] Secondly, after prolonged operation, existing combined gear shafts are prone to noise and rust due to lack of lubrication between the gears and shafts, which can affect subsequent disassembly of the gear shafts and gears. Furthermore, when lubricating oil is added from the outside to the inside of the combined gear shaft after assembly, the lubricating oil has difficulty penetrating into the interior of each part, resulting in poor lubrication effect when lubricating oil is added from the outside. Utility Model Content

[0007] To overcome the shortcomings of existing technologies, this invention provides a high-strength combined gear shaft. Through the inclusion of components such as clamping plates, this invention utilizes the elastic tension of the elastic connecting clips to secure and limit multiple second clamping blocks within their respective compartments, while simultaneously providing continuous lubrication as the gear shaft rotates.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-strength combined gear shaft, including a gear, a through hole provided on the side wall of the gear, a first gear shaft slidably disposed inside the through hole, a second gear shaft slidably disposed on one side of the first gear shaft inside the through hole, a snap-fit ​​assembly provided on the outer circumferential surface of the second gear shaft to snap the first gear shaft and the second gear shaft into the through hole, two clamping mesh plates slidably disposed between the first gear shaft and the second gear shaft inside the through hole, an oil-absorbing sponge disposed between the two clamping mesh plates, the oil-absorbing sponge storing lubricating oil, and a plurality of elastic connecting clips connected between the two clamping mesh plates to provide elastic support for the two clamping mesh plates.

[0009] Optionally, a plurality of first slots are provided on the inner circular surface of the through hole, and a first block is slidably disposed inside each first slot, and each first block is fixedly connected to the outer circular surface of the first gear shaft.

[0010] Optionally, a rotating annular groove is provided on one side of the first gear shaft on the inner circular surface of the through hole, and a third slot is provided on one side of each first slot on the inner wall of the rotating annular groove, and each third slot is engaged and fixed with its adjacent elastic connecting piece.

[0011] Optionally, a second slot is provided on the inner wall of the rotating ring groove on one side of the third slot, and a second block is engaged inside each second slot, and each second block is fixedly connected to the outer circular surface of the second gear shaft.

[0012] Optionally, a support slider is slidably disposed on one side of each of the second card blocks inside the first card slot, and a filling block is connected to one side of each of the support sliders, and each of the filling blocks forms a filling support for the second toothed shaft, the second card block and the through hole.

[0013] Optionally, the snap-fit ​​assembly includes a plurality of first internal threads disposed on the inner circular surface of the through hole, and an external thread retaining ring is rotatably disposed on the outside of the second gear shaft. The external thread retaining ring is threadedly connected to the plurality of first internal threads, and a limit ring plate is fixedly disposed on one side of the external thread retaining ring.

[0014] Optionally, a limiting bolt is provided between the limiting ring plate and the second gear shaft.

[0015] Optionally, a protective oil film is provided between the two clamping mesh plates at the external connection of the oil-absorbing sponge.

[0016] In summary, compared with existing technologies, the beneficial effects of this solution are as follows:

[0017] This utility model, through the setting of components such as clamping mesh plate, elastic connecting card and second card slot, can use the elastic tension of the elastic connecting card itself to clamp and limit multiple second card blocks inside multiple second card slots. With the help of external thread fixing ring, it can form a stable fixation of the first gear shaft and the second gear shaft inside the gear, thereby improving the stability of the combined gear shaft.

[0018] This invention, through the arrangement of components such as a clamping mesh plate, elastic connecting clips, and oil-absorbing sponge, enables the initial release of lubricating oil inside the oil-absorbing sponge during the assembly of the gear shaft by the compression of one side of the clamping mesh plate by the second gear shaft. This ensures sufficient lubrication for multiple components inside the gear. Furthermore, as the oil-absorbing sponge rotates with the gear shaft, the centrifugal force of the gear shaft further and slowly releases the lubricating oil inside the sponge, thus achieving continuous lubrication. This effectively prevents noise caused by insufficient lubrication of internal gear parts and also prevents disassembly difficulties due to rust on the assembled gear shaft. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 for Figure 2 A three-dimensional cross-sectional view at point AA;

[0022] Figure 4 This is an exploded view of the installation of this utility model;

[0023] Figure 5 This is a perspective view of the gear part in this utility model.

[0024] In the figure: Gear 10, First Gear Shaft 11, Second Gear Shaft 12, First Slot 13, First Block 14, Clamping Mesh Plate 15, Elastic Connecting Clip 16, Protective Oil Film 17, Oil Absorbing Sponge 18, Rotating Ring Groove 19, Third Slot 20, Second Slot 21, Second Block 22, Support Slider 23, External Threaded Fixing Ring 24, First Internal Thread 25, Limiting Ring Plate 26, Through Hole 27, Second Internal Thread 28, Limiting Bolt 29, Filler Block 30. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example 1:

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a high-strength combined gear shaft includes a gear 10. A through hole 27 is provided on the side wall of the gear 10. A first gear shaft 11 is slidably disposed inside the through hole 27. A second gear shaft 12 is slidably disposed on one side of the first gear shaft 11 inside the through hole 27. A plurality of first slots 13 are provided on the inner circular surface of the through hole 27. A first block 14 is slidably disposed inside each first slot 13. The plurality of first blocks 14 are fixedly disposed on the outer circular surface of the first gear shaft 11. The arrangement of the plurality of first slots 13 and first blocks 14 can restrict the rotation of the first gear shaft 11, so that the first gear shaft 11 can rotate with the gear 10. A snap-fit ​​assembly is provided on the outer circular surface of the second gear shaft 12 to snap the first gear shaft 11 and the second gear shaft 12 into the through hole 27.

[0027] Two clamping mesh plates 15 are slidably disposed between the first gear shaft 11 and the second gear shaft 12 inside the through hole 27. An oil-absorbing sponge 18 is disposed between the two clamping mesh plates 15. The oil-absorbing sponge 18 stores lubricating oil and needs to be fully saturated with lubricating oil before installation. When replenishing lubricating oil later, it can be added directly through multiple drainage holes on the end face of the clamping mesh plate 15 without disassembling the oil-absorbing sponge 18 or other components. Multiple elastic connecting clips 16 are provided between the two clamping mesh plates 15 to provide elastic support. The overall shape of the elastic connecting clips 16 is M-shaped. The elastic connecting clips 16 can be made of elastic metal or high-toughness plastic material, as long as they provide good elastic support and a good service life. This solution does not impose too many restrictions. The elastic tension of the connecting clip 16 can form an elastic support between the two clamping mesh plates 15. The two clamping mesh plates 15 will abut against the end faces of the first gear shaft 11 and the second gear shaft 12 under the action of the elastic connecting clip 16, thereby forming an elastic support between the first gear shaft 11 and the second gear shaft 12. This allows multiple first clips 14 to be securely engaged in the interior of multiple first slots 13. At the same time, after rotating the second gear shaft 12, each second clip 22 moves to the side of its adjacent second slot 21. Under the elastic support of the two clamping mesh plates 15 and the elastic connecting clip 16, multiple second clips 22 at one end of the second gear shaft 12 are securely engaged in the interior of multiple second slots 21, forming a preliminary assembly and engagement of the gear 10, the first gear shaft 11, and the second gear shaft 12, making the overall assembly of the combined gear shaft more convenient and stable.

[0028] A rotating annular groove 19 is provided on one side of the first gear shaft 11 on the inner circular surface of the through hole 27. The distance between the two clamping mesh plates 15 is greater than the width of the rotating annular groove 19. A third groove 20 is provided on one side of the first slot 13 on the inner side wall of the rotating annular groove 19. The diameter and width of the third groove 20 are basically the same as the shape of the elastic connecting clip 16. Each third groove 20 is engaged and fixed with its adjacent elastic connecting clip 16. Through the engagement of the elastic connecting clip 16 and the third groove 20, the two clamping mesh plates 15 and the oil-absorbing sponge 18 can rotate with the gear 10 and other components. Thus, the oil-absorbing sponge 18 can continuously release lubricating oil during the rotation, continuously lubricating the combined gear shaft and improving the service life of the device.

[0029] Furthermore, such as Figure 4As shown, the snap-fit ​​assembly includes multiple first internal threads 25 disposed on the inner circular surface of the through hole 27. An external threaded retaining ring 24 is rotatably disposed on the outside of the second gear shaft 12. The external threaded retaining ring 24 is threadedly connected to the multiple first internal threads 25. When the external threaded retaining ring 24 is screwed into the first internal threads 25, one end of the external threaded retaining ring 24 abuts against one end of the multiple second locking blocks 22. The arrangement of the external threaded retaining ring 24 and the first internal threads 25 can limit one side of the multiple second locking blocks 22, thereby forming a snap-fit ​​limit on one end of the second gear shaft 12, so that the first... The gear shaft 11 and the second gear shaft 12 are securely engaged inside the through hole 27. A limiting ring plate 26 is fixedly provided on one side of the external threaded fixing ring 24. The setting of the limiting ring plate 26 forms a limit on the threaded rotation of the external threaded fixing ring 24 inside the through hole 27, and also forms a limit on the multiple support sliders 23 inside the first slot 13. By supporting one side of the multiple first locking blocks 14 through the multiple support sliders 23, the abutment limit on the first gear shaft 11 is formed, which also facilitates the rotation of the external threaded fixing ring 24, thereby facilitating the installation of the external threaded fixing ring 24.

[0030] Furthermore, such as Figure 1 As shown, a limiting bolt 29 is provided between the limiting ring plate 26 and the second gear shaft 12. After the external threaded fixing ring 24 is threadedly fixed inside the gear 10, the limiting ring plate 26 is also fixed along with the external threaded fixing ring 24. However, under the long-term rotation of the combined gear shaft, relative rotation may occur between the threaded external threaded fixing ring 24 and the gear 10, which may cause loosening between the combined gear shaft parts. By having one end of the limiting bolt 29 pass through both the second gear shaft 12 and the limiting ring plate 26, a further positional limitation is formed between the second gear shaft 12 and the limiting ring plate 26, thereby forming a limiting fixation between the gear ring 10 and the limiting ring plate 26. This effectively prevents the external threaded fixing ring 24 from loosening during the rotation of the gear shaft and improves the overall stability of the gear shaft.

[0031] Furthermore, such as Figure 4 and Figure 5 As shown, each third slot 20 has a second slot 21 on one side of the inner wall of the rotating ring groove 19. A second locking block 22 is engaged inside each second slot 21. The second slot 21 is an irregularly shaped slot, with an overall shape as shown in the figure. Figure 5As shown, the second locking block 22 moves to one side of the second locking slot 21 through the first locking slot 13. Then, one end of the second gear shaft 12 needs to be pressed to drive the second locking block 22 to form an elastic compression on one side of the clamping mesh plate 15. Then rotate the second gear shaft 22 until the second locking block 22 abuts against the inner side wall of the second locking slot 21. Finally, release one end of the second gear shaft 12 so that the second locking block 22 is locked and fixed inside the second locking slot 21 under the elastic support of the two clamping mesh plates 15 and the elastic connecting card 16, thereby forming a more stable locking and fixing of one end of the second gear shaft 12. Each second locking block 22 is fixedly connected to the outer circular surface of the second gear shaft 12.

[0032] Furthermore, such as Figure 4 As shown, a support slider 23 is slidably disposed on one side of each second locking block 22 inside the first locking groove 13. The placement of the support slider 23 forms support between the limiting ring plate 26 and the multiple first locking blocks 14, and further forms support and fixation for the first gear shaft 11. A second internal thread 28 is provided on the inner circular surface of each support slider 23. The multiple second internal threads 28 can be threadedly connected to the external thread fixing ring 24, thereby further forming thread fixation for the external thread fixing ring 24. A filling block 30 is connected to one side of each support slider 23. Each filling block 30 forms filling support between the second gear shaft 12, the second locking block 22, and the through hole 27.

[0033] Installation process of this utility model:

[0034] First, the first gear shaft 11 is inserted into the through hole 27, so that one end of the first gear shaft 11 passes through the through hole 27. At this time, the multiple first locking blocks 14 at the other end of the first gear shaft 11 move to the bottom of the multiple first locking slots 13. At this time, one side wall of the multiple first locking blocks 14 and one side wall of the rotating annular groove 19 form an annular plane. Then, the clamping mesh plate 15 is installed into the through hole 27, and the multiple elastic connecting clips 16 slide along the inside of the multiple first locking slots 13 until one end of the multiple elastic connecting clips 16 is connected to the multiple first locking slots 13. The first clamping block 14 abuts against the first clamping plate 15, then presses down on one of the clamping mesh plates 15, causing the two clamping mesh plates 15 to press against each other and come closer together. Then the clamping mesh plate 15 is rotated so that the multiple elastic connecting clips 16 rotate to one side of each third slot 20. Then the clamping mesh plate 15 is released from pressure, so that the elastic connecting clips 16 regain their elastic support and are engaged inside each third slot 20. Then, lubricating oil is added to the inside of the protective oil film 17 through the through hole on one side of the clamping mesh plate 15.

[0035] Then, the second gear shaft 12 is inserted into the through hole 27. During this process, multiple second locking blocks 22 slide inside multiple first locking slots 13 until one end of the second gear shaft 12 abuts against one end of one of the clamping mesh plates 15. Then, one end of the second gear shaft 12 is pressed and rotated so that multiple second locking blocks 22 are engaged into the interior of multiple second locking slots 21. During this process, one end of the second gear shaft 12 will form a compression on one end of the clamping mesh plate 15, thereby forming a large compression on the protective oil film 17, which in turn causes the lubricating oil inside the protective oil film 17 to initially leak out, forming lubrication between multiple parts inside the gear 10.

[0036] Finally, multiple support sliders 23 are installed, allowing them to slide along the interior of multiple first slots 13 until they abut against each other. During this process, multiple filler blocks 30 follow the support sliders 23 to provide support and fill the exterior of the second gear shaft 12. Then, the limiting ring plate 26 is turned, causing it to drive the external threaded fixing ring 24 to be installed inside the through hole 27. Finally, the limiting bolt 29 is passed through the limiting ring plate 26 and the second gear shaft 12 to fix the limiting ring plate 26 and the second gear shaft 12. Example 2:

[0037] Based on Example 1, further examples are made, such as... Figure 4 As shown, a protective oil film 17 is provided between the two clamping mesh plates 15 and the outside of the oil-absorbing sponge 18. The protective oil film 17 is made of corrosion-resistant elastic fabric. Lubricating oil can slowly penetrate outward through the protective oil film 17. The setting of the protective oil film 17 can further form a protective wrap around the oil-absorbing sponge 18, effectively preventing displacement of the oil-absorbing sponge 18 during the rotation with the gear shaft, which would affect the normal release of lubricating oil from the oil-absorbing sponge 18. At the same time, the protective oil film 17 can slow down the release of lubricating oil from the oil-absorbing sponge 18 under the action of centrifugal force, increase the release time of the lubricating oil inside the oil-absorbing sponge 18, and shorten the lubricating oil filling cycle of the oil-absorbing sponge 18.

[0038] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0039] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes said element.

[0040] The foregoing description illustrates and describes several preferred embodiments of this application. However, as previously stated, it should be understood that this application is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the application concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this application should be within the protection scope of the appended claims.

Claims

1. A high-strength combined gear shaft, comprising a gear (10), wherein a through hole (27) is provided on the side wall of the gear (10), a first gear shaft (11) is slidably disposed inside the through hole (27), and a second gear shaft (12) is slidably disposed on one side of the first gear shaft (11) inside the through hole (27), characterized in that, The outer surface of the second gear shaft (12) is provided with a snap-fit ​​assembly that can snap the first gear shaft (11) and the second gear shaft (12) into the through hole (27). Two clamping mesh plates (15) are slidably arranged between the first gear shaft (11) and the second gear shaft (12) inside the through hole (27). An oil-absorbing sponge (18) is arranged between the two clamping mesh plates (15). The oil-absorbing sponge (18) stores lubricating oil. Multiple elastic connecting clips (16) that can provide elastic support for the two clamping mesh plates (15) are connected between the two clamping mesh plates (15).

2. The high-strength combined gear shaft according to claim 1, characterized in that, The inner circular surface of the through hole (27) is provided with a plurality of first slots (13), and a first block (14) is slidably disposed inside each first slot (13), and each first block (14) is fixedly connected to the outer circular surface of the first gear shaft (11).

3. A high-strength combined gear shaft according to claim 2, characterized in that, A rotating ring groove (19) is provided on one side of the first gear shaft (11) on the inner circular surface of the through hole (27). A third groove (20) is provided on one side of the first slot (13) on the inner side wall of the rotating ring groove (19). Each third groove (20) is engaged and fixed with its adjacent elastic connecting piece (16).

4. A high-strength combined gear shaft according to claim 3, characterized in that, Each of the third slots (20) has a second slot (21) on one side of the inner wall of the rotating ring groove (19). Each second slot (21) has a second block (22) inside it, and each second block (22) is fixedly connected to the outer surface of the second gear shaft (12).

5. A high-strength combined gear shaft according to claim 4, characterized in that, Each of the second locking blocks (22) has a support slider (23) slidably disposed on one side inside the first locking groove (13), and a filling block (30) is connected to one side of each support slider (23). Each filling block (30) forms a filling support between the second gear shaft (12), the second locking block (22), and the through hole (27).

6. A high-strength combined gear shaft according to claim 1, characterized in that, The snap-fit ​​assembly includes a plurality of first internal threads (25) disposed on the inner circular surface of the through hole (27), and an external thread retaining ring (24) is rotatably disposed on the outside of the second gear shaft (12). The external thread retaining ring (24) is threadedly connected to the plurality of first internal threads (25), and a limit ring plate (26) is fixedly disposed on one side of the external thread retaining ring (24).

7. A high-strength combined gear shaft according to claim 6, characterized in that, A limiting bolt (29) is provided between the limiting ring plate (26) and the second gear shaft (12).

8. A high-strength combined gear shaft according to claim 1, characterized in that, A protective oil film (17) is provided between the two clamping mesh plates (15) at the external connection of the oil-absorbing sponge (18).

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