A drive shaft with high stability

Abstract

The present application relates to the technical field of drive shafts, and particularly to a drive shaft with high stability, which includes a shaft body, a follower gear, and a driving gear coaxially connected to the shaft body. The follower gear can rotate together with the shaft body. A plurality of the follower gears are provided, and the driving gear is located between adjacent follower gears. A locking assembly for restricting the axial movement of the driving gear along the shaft body is provided on the shaft body. The present application has the effect of improving the service life of the drive shaft.

Description

Technical Field

[0001] This application relates to the technical field of drive shafts, and in particular to a drive shaft with high stability. Background Art

[0002] A drive shaft is a kind of working device of a loader, which is a device that can promote the smoothness of the loader and enable the drive wheels to rotate at different angular velocities.

[0003] There is a conventional drive shaft, on which a plurality of gears for adjusting the vehicle gear are coaxially sleeved. Some of the gears are rotatably connected to the drive shaft body, and some gears rotate together with the shaft body. The gears and the shaft body are connected by a circlip. When the gear rotatably connected to the shaft body is located between the gears rotating together with the shaft body, if the circlip pops off, at this time, the gear rotatably connected to the shaft body is likely to have an axial relative slip with the shaft body, thereby colliding with the adjacent gears and causing gear beating, which reduces the overall stability of the drive shaft and shortens the overall service life of the drive shaft. Summary of the Invention

[0004] In order to improve the service life of the drive shaft, this application provides a drive shaft with high stability.

[0005] The drive shaft with high stability provided by this application adopts the following technical solutions:

[0006] A drive shaft with high stability includes a shaft body, follower gears, and a driving gear coaxially connected to the shaft body. The follower gears can rotate together with the shaft body. There are a plurality of the follower gears. The driving gear is located between adjacent follower gears. A locking assembly for restricting the axial movement of the driving gear along the shaft body is provided on the shaft body.

[0007] By adopting the above technical solutions, the relative position between the driving gear and the shaft body is restricted by the locking assembly, so that the driving gear rotates relative to the shaft body, restricting the axial slip between the driving gear and the shaft body, thereby reducing the possibility of collision between the driving gear and the follower gears and causing gear beating, improving the stability of the drive shaft during use, and extending the service life of the drive shaft.

[0008] Optionally, the locking assembly includes a first limiting ring. A guiding groove and a limiting groove are provided on the shaft body. The guiding groove is arranged along the length direction of the shaft body. The limiting groove is coaxially arranged with the shaft body and communicates with the guiding groove. A limiting block is connected to the inner side wall of the first limiting ring, and the limiting block is slidably matched with the guiding groove and the limiting groove.

[0009] By adopting the above technical solution, the first limiting ring is sleeved on the shaft body through the sliding fit of the limiting ring and the guiding groove until the first limiting ring abuts against the driving gear, and then the first limiting ring is rotated so that the limiting block is located in the limiting groove, thereby restricting the axial movement of the first limiting ring, and thus facilitating the restriction of the axial movement of the driving gear along the shaft body.

[0010] Optionally, the locking assembly further includes a second limiting ring, which is located on the side of the first limiting ring away from the driving gear. The second limiting ring is coaxially arranged with the shaft body. A guiding block that is slidably engaged with the guiding groove is connected to the inner side wall of the second limiting ring, and the guiding block penetrates through the limiting groove.

[0011] By adopting the above technical solution, the second limiting ring is sleeved on the shaft body through the sliding fit of the guiding block and the guiding groove until the first limiting ring abuts against the second limiting ring, and the limiting block is inserted between adjacent limiting blocks, thereby restricting the rotation of the first limiting ring and improving the stability of the first limiting ring.

[0012] Optionally, a first insertion rod is slidably connected to the first limiting ring along the radial direction of the shaft body. The first insertion rod is inserted and matched with the guiding block. A second insertion rod is slidably connected to the second limiting ring along the radial direction of the shaft body. The second insertion rod is inserted and matched with the shaft body.

[0013] By adopting the above technical solution, after the first limiting ring and the second limiting ring are sleeved on the shaft body, the first insertion rod and the second insertion rod are moved towards the axis of the shaft body, strengthening the connection relationship between the first limiting ring, the second limiting ring and the shaft body, and thus improving the stability of the driving gear.

[0014] Optionally, an elastic groove is provided on the side wall of the second limiting ring facing the first limiting ring. A second abutting block is slidably connected to the bottom of the elastic groove along the axial direction of the shaft body through a second elastic member. A sliding hole for the second insertion rod to slide is provided on the inner side wall of the second limiting ring. The second insertion rod is connected to the bottom of the sliding hole through a third elastic member. A through hole that is slidably engaged with the second insertion rod is provided on the second abutting block. When the second elastic member is in a natural state, one end of the second abutting block is located in the elastic groove, the other end is located in the elastic groove, the through hole is located on the side of the second insertion rod close to the first limiting ring, and the second insertion rod abuts against the side wall of the second abutting block away from the inner side wall of the second limiting ring, and the third elastic member is in a compressed state.

[0015] By adopting the above technical solution, when the second limiting ring moves towards the first limiting ring, the first limiting ring pushes the second abutting block into the elastic groove, and the through hole is opposite to the second insertion rod. Under the action of the third elastic member, the insertion rod moves towards the axis of the shaft body, and the second insertion rod is inserted into the shaft body, realizing the connection between the second limiting ring and the shaft body, restricting the relative sliding and rotation between the second limiting ring and the shaft body, and improving the stability of the second limiting ring.

[0016] Optionally, a first abutting block is slidably connected to the first limiting ring along its axial direction through a sliding cavity. A first elastic member is connected between the first abutting block and the side wall of the sliding cavity away from the second limiting ring. A jack corresponding to the second abutting block is provided on the first limiting ring. The elasticity of the second elastic member is stronger than that of the first elastic member. A through hole for the first insertion rod to penetrate is provided on the first abutting block.

[0017] By adopting the above technical solution, when the second limiting ring moves towards the first limiting ring, the second abutting block moves towards the first abutting block through the jack. The second abutting block pushes the first abutting block, and the first elastic member is compressed. After the first elastic member is compressed to the limit, the through hole moves to be opposite to the sliding hole. At this time, under the pressing of the first abutting block on the second abutting block, the second elastic member is compressed, and the second abutting block moves away from the first limiting ring. The through hole is opposite to the sliding hole. Under the elastic action of the third elastic member, the first insertion rod is inserted into the guiding block, and the second insertion rod is inserted into the shaft body, so as to simultaneously realize the connection between the first limiting ring and the second limiting ring and the connection between the second limiting ring and the shaft body.

[0018] Optionally, a pulling rope is connected to both the first insertion rod and the second insertion rod, and the pulling rope penetrates through the first limiting ring and the second limiting ring.

[0019] By adopting the above technical solution, pulling the pulling rope drives the first insertion rod and the second insertion rod to move, pulling the first insertion rod back to the side of the first abutting block away from the axis of the shaft body, and pulling the second insertion rod back to the side of the second abutting block away from the axis of the shaft body, so as to release the connection relationship between the second limiting ring and the shaft body and the connection relationship between the first limiting ring and the second limiting ring, facilitating the disassembly of the second limiting ring and the first limiting ring from the shaft body.

[0020] Optionally, a first adjusting ring is slidably connected to the outer side wall of the first limiting ring, and a second adjusting ring is slidably connected to the outer side wall of the second limiting ring. The first adjusting ring and the second adjusting ring are in plug-in fit with each other. One end of the pulling rope away from the first insertion rod is connected to the first adjusting ring, and one end of the pulling rope away from the second insertion rod is connected to the second adjusting ring. A positioning member for positioning the second adjusting ring is connected to the second limiting ring.

[0021] By adopting the above technical solution, when the second limiting ring moves towards the first limiting ring, the first adjusting ring and the second adjusting ring are plugged together, and at the same time, rotating the first adjusting ring and the second adjusting ring facilitates pulling the pulling ropes on the first insertion rod and the second insertion rod simultaneously.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By restricting the relative position between the driving gear and the shaft body through the locking component, relative rotation between the driving gear and the shaft body is enabled, axial slippage between the driving gear and the shaft body is restricted, thereby reducing the possibility of collision between the driving gear and the driven gear and the occurrence of tooth breakage, improving the stability of the drive shaft during use, and extending the service life of the drive shaft;

[0024] 2. The second limiting ring is sleeved on the shaft body through the sliding fit of the guiding block and the guiding groove until the first limiting ring abuts against the second limiting ring, and the limiting block is inserted between adjacent limiting blocks, thereby restricting the rotation of the first limiting ring and improving the stability of the first limiting ring;

[0025] 3. When the second limiting ring moves towards the first limiting ring, the second abutting block moves towards the first abutting block through the jack, the second abutting block pushes the first abutting block, and the first elastic member is compressed. After the first elastic member is compressed to the limit, the through port moves to be opposite to the sliding port. At this time, under the pressing of the first abutting block, the second elastic member is compressed, the second abutting block moves away from the first limiting ring, the through hole is opposite to the sliding hole, and under the elastic action of the third elastic member, the first insertion rod is inserted into the guiding block, and the second insertion rod is inserted into the shaft body, thereby simultaneously realizing the connection between the first limiting ring and the second limiting ring and the connection between the second limiting ring and the shaft body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of a highly stable drive shaft in Embodiment 1 of the present application;

[0027] Figure 2 is a schematic diagram showing the positional relationship between the first limiting ring and the second limiting ring in Embodiment 1 of the present application;

[0028] Figure 3 is a schematic diagram showing the positional relationship between the second adjusting ring and the second limiting ring in Embodiment 2 of the present application;

[0029] Figure 4 is used to illustrate Figure 3 an enlarged view of part A showing the positional relationship between the first abutting plate and the second abutting plate;

[0030] Figure 5 is a schematic diagram showing the positional relationship between the first adjusting ring and the second adjusting ring in Embodiment 2 of the present application;

[0031] Figure 6 is used to illustrate Figure 3 an enlarged view of part B showing the positional relationship between the first abutting plate and the first insertion rod.

[0032] DESCRIPTION OF THE REFERENCE NUMERALS:

[0033] 1. Shaft body; 2. Driving gear; 3. Driven gear; 4. First limiting ring; 5. Second limiting ring; 6. Guide groove; 7. Limiting groove; 8. Limiting block; 9. Guide block; 10. Ball; 11. First abutting block; 12. Second abutting block; 13. Elastic groove; 14. First elastic member; 15. Sliding cavity; 16. Second elastic member; 17. Insertion hole; 18. First insertion rod; 19. Second insertion rod; 20. Third elastic member; 21. Sliding opening; 22. Through opening; 23. Sliding hole; 24. Through hole; 25. First adjusting ring; 26. Second adjusting ring; 27. Pulling rope; 28. Bracket; 29. Positioning bolt; 30. Inserting block; 31. Inserting slot. Detailed implementation manners

[0034] An embodiment of the present application discloses a drive shaft with high stability.

[0035] Embodiment 1

[0036] Referring to Figure 1 , a drive shaft with high stability includes a shaft body 1, a driven gear 3 and a driving gear 2. The driving gear 2 is coaxially and rotatably connected to the shaft body 1. There are multiple driven gears 3, and the driven gears 3 are coaxially and fixedly connected to the shaft body 1. The driven gears 3 rotate following the shaft body 1, and the driving gear 2 is located between two adjacent driven gears 3.

[0037] Referring to Figure 1 and Figure 2 , a drive shaft with high stability further includes a locking assembly for restricting the axial movement of the driving gear 2 along the shaft body 1.

[0038] Referring to Figure 1 and Figure 2 , the locking assembly includes a first limiting ring 4 and a second limiting ring 5. The first limiting ring 4 and the second limiting ring 5 are located between the driving gear 2 and the driven gear 3, and the first limiting ring 4 is located between the second limiting ring 5 and the driving gear 2. The shaft body 1 is provided with a guide groove 6 and a limiting groove 7. The guide groove 6 is arranged along the length direction of the shaft body 1, and there are multiple guide grooves 6 arranged circumferentially centered on the axis of the shaft body 1. The limiting groove 7 is arranged in a ring shape and coaxially with the shaft body 1. The limiting groove 7 communicates with the guide groove 6. A limiting block 8 is connected to the inner side wall of the first limiting ring 4, and the limiting block 8 is slidably matched with the guide groove 6 and the limiting groove 7. A guide block 9 is connected to the inner side wall of the second limiting ring 5, and the guide block 9 is slidably matched with the guide groove 6 along the axial direction of the shaft body 1.

[0039] The implementation principle of the drive shaft with high stability in the present application is as follows:

[0040] Align the limiting block 8 with the guiding groove 6, move the limiting block 8 along the guiding groove 6, and move the first limiting ring 4 towards the driving gear 2. After the driving gear 2 abuts against the first limiting ring 4, rotate the first limiting ring 4 so that the limiting block 8 moves into the limiting groove 7, and the limiting block 8 is located between adjacent guiding grooves 6. Then move the second limiting ring 5 towards the first limiting ring 4 through the sliding fit between the guiding block 9 and the guiding groove 6 until the second limiting ring 5 abuts against the side wall of the first limiting ring 4 away from the driving gear 2. At this time, the guiding block 9 penetrates the limiting groove 7 and is inserted between the first limiting ring 4 and the shaft body 1. The guiding block 9 is located between adjacent limiting blocks 8, and the limiting block 8 on the first limiting ring 4 is inserted into the limiting groove 7, thereby realizing the detachable connection between the first limiting ring 4 and the shaft body 1, restricting the axial movement of the driving gear 2 along the shaft body 1. The guiding block 9 is inserted between adjacent limiting blocks 8, restricting the rotation of the first limiting ring 4 and preventing the limiting block 8 from moving from the limiting groove 7 to the guiding groove 6, improving the connection stability between the first limiting ring 4 and the shaft body 1. Install the follower gear 3 on the shaft body 1, and the follower gear 3 abuts against the second limiting ring 5, thereby clamping the second limiting ring 5 and the first limiting ring 4 on the shaft body 1.

[0041] Embodiment 2

[0042] Refer to Figure 3 and Figure 4 On the side wall of the first limiting ring 4 facing the driving gear 2, a ball 10 can be rotatably connected to reduce the friction between the first limiting ring 4 and the driving gear 2. Inside the first limiting ring 4, a first abutting block 11 is slidably connected along the axial direction of the first limiting ring 4 through a sliding cavity 15. The first abutting block 11 is arranged in a ring shape, and a first elastic member 14 is connected between the first abutting block 11 and the side wall of the sliding cavity 15 away from the second limiting ring 5. On the side wall of the second limiting ring 5 facing the first limiting ring 4, an elastic groove 13 is provided. A plurality of elastic grooves 13 are arranged in a circumferential manner centered on the axis of the second limiting ring 5. The elastic grooves 13 are located between adjacent guiding blocks 9. At the bottom of the elastic groove 13, a second abutting block 12 is slidably connected along the axial direction of the shaft body 1 through a second elastic member 16. On the side wall of the first limiting ring 4 facing the second limiting ring 5, a jack 17 for inserting the second abutting block 12 is provided. The jack 17 is communicated with the sliding cavity 15, and the elasticity of the second elastic member 16 is stronger than that of the first elastic member 14.

[0043] Refer to Figure 5 and Figure 6, a first limiting ring 4 is slidably connected with a first inserting rod 18 along the radial direction of the shaft body 1. The first inserting rod 18 is in plug-in fit with the guiding block 9. A sliding port 21 for the first inserting rod 18 to slide is arranged on the inner side wall of the first limiting ring 4. The sliding port 21 is communicated with the sliding cavity 15. The first inserting rod 18 and the sliding port 21 are both located between adjacent limiting blocks 8. The bottom of the sliding port 21 is connected with a third elastic member 20. The third elastic member 20 is a spring. One end of the third elastic member 20 far away from the bottom of the sliding port 21 is connected with the first inserting rod 18. A through port 22 for the first inserting rod 18 to penetrate is arranged on the first abutting block 11. When the first elastic member 14 is in a natural state, the through port 22 is located on the side of the first inserting rod 18 close to the second limiting ring 5. The first inserting rod 18 abuts against the side wall of the first abutting block 11 far away from the axis of the first limiting ring 4, and the third elastic member 20 is in a compressed state.

[0044] Referring to Figure 4 and Figure 6 , a second limiting ring 5 is slidably connected with a second inserting rod 19 along the radial direction of the shaft body 1. The second inserting rod 19 is in plug-in fit with the shaft body 1. A sliding hole 23 for the second inserting rod 19 to slide is arranged on the inner side wall of the second limiting ring 5. The bottom of the second inserting rod 19 and the sliding hole 23 is also connected with a third elastic member 20. A through hole 24 for sliding cooperation with the second inserting rod 19 is arranged on the second abutting block 12. When the second elastic member 16 is in a natural state, one end of the second abutting block 12 is located in the elastic groove 13, and the other end is located in the elastic groove 13. The through hole 24 is located on the side of the second inserting rod 19 close to the first limiting ring 4. The second inserting rod 19 abuts against the side wall of the second abutting block 12 far away from the inner side wall of the second limiting ring 5, and at this time the third elastic member 20 is in a compressed state.

[0045] When the second limiting ring 5 moves towards the first limiting ring 4, the second abutting block 12 moves towards the first abutting block 11 through the inserting hole 17. The second abutting block 12 pushes the first abutting block 11 far away from the second limiting ring 5, and the first elastic member 14 is compressed. After the first elastic member 14 is compressed to the limit, the through port 22 moves to be opposite to the sliding port 21. At this time, under the pressing of the first abutting block 11, the second elastic member 16 is compressed, and the second abutting block 12 moves away from the first limiting ring 4, and the through hole 24 is opposite to the sliding hole 23; the third elastic member 20 returns to the natural state, the first inserting rod 18 penetrates through the sliding port 21 and is in plug-in fit with the guiding block 9, and the second inserting rod 19 penetrates through the sliding hole 23 and is in plug-in fit with the shaft body 1, so as to fix the relative position between the second limiting ring 5 and the shaft body 1, improve the connection stability between the second limiting ring 5 and the shaft body 1, and reduce the possibility of axial slip between the driving gear 2 and the shaft body 1.

[0046] Referring to Figure 3 and Figure 4, a first adjusting ring 25 is coaxially and rotatably connected to the outer side wall of the first limiting ring 4, and a second adjusting ring 26 is coaxially and rotatably connected to the outer side wall of the second limiting ring 5. A pulling rope 27 is connected between the first inserting rod 18 and the first adjusting ring 25, and between the second inserting rod 19 and the second adjusting ring 26. An inserting block 30 is connected to the side wall of the first adjusting ring 25 facing the second adjusting ring 26, and a slot 31 for inserting the inserting block 30 is provided on the second adjusting ring 26. A positioning member for positioning the second adjusting ring 26 is connected to the second limiting ring 5. In this embodiment, the positioning member is a positioning bolt 29. A bracket 28 is connected to the outer side wall of the second limiting ring 5. The bracket 28 is located on the side of the second adjusting ring 26 away from the first limiting ring 4. The positioning bolt 29 is threadedly connected to the bracket 28, and the positioning bolt 29 passes through the bracket 28 and is threadedly connected to the second adjusting ring 26.

[0047] When the second limiting ring 5 moves towards the first limiting ring 4, the inserting block 30 is inserted into the slot 31; when it is necessary to disassemble the first limiting ring 4 and the second limiting ring 5, the first adjusting ring 25 and the second adjusting ring 26 are rotated simultaneously, and the pulling rope 27 pulls the first inserting rod 18 and the second inserting rod 19, so that the first inserting rod 18 moves to the side of the first abutting block 11 away from the axis of the first limiting ring 4, and the second inserting rod 19 moves to the side of the second abutting block 12 away from the axis of the second limiting ring 5.

[0048] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A drive shaft with high stability, comprising a shaft body (1), a follower gear (3), and a driving gear (2) coaxially connected to the shaft body (1). The follower gear (3) can rotate together with the shaft body (1). A plurality of the follower gears (3) are provided, and the driving gear (2) is located between adjacent follower gears (3). It is characterized in that: A locking assembly for restricting the axial movement of the driving gear (2) along the shaft body (1) is provided on the shaft body (1). The locking assembly includes a first limiting ring (4). A guiding groove (6) and a limiting groove (7) are provided on the shaft body (1). The guiding groove (6) is arranged along the length direction of the shaft body (1). The limiting groove (7) is coaxially arranged with the shaft body (1). The limiting groove (7) communicates with the guiding groove (6). A limiting block (8) is connected to the inner side wall of the first limiting ring (4). The limiting block (8) is in sliding fit with the guiding groove (6) and the limiting groove (7). The locking assembly further includes a second limiting ring (5). The second limiting ring (5) is located on the side of the first limiting ring (4) away from the driving gear (2). The second limiting ring (5) is coaxially arranged with the shaft body (1). A guiding block (9) that is in sliding fit with the guiding groove (6) is connected to the inner side wall of the second limiting ring (5). The guiding block (9) penetrates through the limiting groove (7). A first insertion rod (18) is slidably connected to the first limiting ring (4) along the radial direction of the shaft body (1). The first insertion rod (18) is in plug-in fit with the guiding block (9). A second insertion rod (19) is slidably connected to the second limiting ring (5) along the radial direction of the shaft body (1). The second insertion rod (19) is in plug-in fit with the shaft body (1). An elastic groove (13) is provided on the side wall of the second limiting ring (5) facing the first limiting ring (4). A second abutting block (12) is slidably connected to the bottom of the elastic groove (13) along the axial direction of the shaft body (1) through a second elastic member (16). A sliding hole (23) for the second insertion rod (19) to slide is provided on the inner side wall of the second limiting ring (5). The second insertion rod (19) is connected to the bottom of the sliding hole (23) through a third elastic member (20). A through hole (24) that is in sliding fit with the second insertion rod (19) is provided on the second abutting block (12). When the second elastic member (16) is in a natural state, one end of the second abutting block (12) is located in the elastic groove (13), and the other end is also located in the elastic groove (13). The through hole (24) is located on the side of the second insertion rod (19) close to the first limiting ring (4). The second insertion rod (19) abuts against the side wall of the second abutting block (12) away from the inner side wall of the second limiting ring (5). The third elastic member (20) is in a compressed state.

2. The drive shaft with high stability according to claim 1, wherein: A first abutting block (11) is slidably connected to the first limiting ring (4) along its axial direction through a sliding cavity (15). A first elastic member (14) is connected between the first abutting block (11) and the side wall of the sliding cavity (15) away from the second limiting ring (5). A jack (17) corresponding to the second abutting block (12) is provided on the first limiting ring (4). The elasticity of the second elastic member (16) is stronger than that of the first elastic member (14). A through port (22) for the first insertion rod (18) to penetrate is provided on the first abutting block (11).

3. A drive shaft with high stability according to claim 1, characterized in that: Pulling ropes (27) are connected to both the first insertion rod (18) and the second insertion rod (19). The pulling ropes (27) penetrate through the first limiting ring (4) and the second limiting ring (5).

4. A drive shaft with high stability according to claim 3, characterized in that: A first adjusting ring (25) is slidably connected to the outer side wall of the first limiting ring (4), a second adjusting ring (26) is slidably connected to the outer side wall of the second limiting ring (5), the first adjusting ring (25) and the second adjusting ring (26) are inserted and matched with each other, one end of the pulling rope (27) far away from the first inserting rod (18) is connected to the first adjusting ring (25), one end of the pulling rope (27) far away from the second inserting rod (19) is connected to the second adjusting ring (26), and a positioning member for positioning the second adjusting ring (26) is connected to the second limiting ring (5).

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