Planetary gear shaft of differential mechanism

Abstract

The utility model discloses a differential mechanism planetary gear shaft which comprises a differential mechanism shell, planetary gear shaft bodies are clamped in the differential mechanism shell, the inner walls of the planetary gear shaft bodies are in threaded connection with limiting bolts, two planetary gear bodies are arranged in the differential mechanism shell, and the inner wall of each planetary gear body is rotationally connected with a limiting cylinder. The inner wall of each limiting cylinder makes contact with the outer surface of the planetary gear shaft body, a bidirectional threaded rod is rotationally connected into the planetary gear shaft body, two conical blocks are in threaded connection with the outer surface of the bidirectional threaded rod, and four limiting plates are fixedly installed on the inner wall of the planetary gear shaft body. Stress springs are fixedly mounted on the upper surface and the bottom surface of each limiting plate; the conical block can be driven to move by rotating the rotary two-way threaded rod, and the insertion block can be driven to return to the original position by elasticity provided by the stress spring, so that the planetary gear body is convenient to disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of differentials, in particular to a differential planetary gear shaft. Background Art

[0002] The car differential enables the left and right or front and rear drive wheels to rotate at different speeds. It is mainly composed of left and right half-shaft gears, two planetary gears and a gear rack. The function of the differential is to adjust the speed difference between the left and right wheels. The differential planetary gear shaft is mainly used to fix the planetary gears in the differential.

[0003] The utility model with application number 202120475006.X discloses a planetary gear shaft of a differential, which is provided with a uniquely structured oil passage, through which lubricating oil can flow during operation, so as to more fully lubricate the planetary gear shaft and the planetary gear, and effectively avoid the problems of burning and breaking of the planetary gear shaft caused by insufficient lubrication. However, there are still the following shortcomings: it is inconvenient to disassemble and install the planetary gear shaft, making it inconvenient to replace the planetary gear shaft after it is damaged or worn, which not only increases the labor intensity of the staff, but also reduces the replacement efficiency. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a differential planetary gear shaft, which is convenient for disassembly and installation of the planetary gear shaft.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned objectives, the utility model provides the following technical solutions: a differential planetary gear shaft differential case, the interior of the differential case is clamped with a planetary gear shaft body, the inner wall of the planetary gear shaft body is threadedly connected to a limiting bolt, two planetary gear bodies are arranged inside the differential case, the inner wall of each of the planetary gear bodies is rotatably connected to a limiting cylinder, the inner wall of each of the limiting cylinders is in contact with the outer surface of the planetary gear shaft body, the interior of the planetary gear shaft body is rotatably connected with a two-way threaded rod, the outer surface of the two-way threaded rod is threadedly connected to two conical blocks, four limiting plates are fixedly installed on the inner wall of the planetary gear shaft body, the upper surface and bottom surface of each limiting plate are fixedly installed with a force spring, and a limiting block is fixedly installed on the end of each group of the force springs away from each other, and each of the limiting blocks is clamped inside the limiting cylinder.

[0008] Preferably, two side gears are meshed together on the outer surfaces of the two planetary gear bodies, and a connecting shaft is fixedly installed on the side surfaces of the two side gears that are away from each other.

[0009] Preferably, flanges are fixedly mounted on the ends of the two connecting shafts that are away from each other, and the upper surface of each flange is provided with connecting holes arranged at equal distances.

[0010] Preferably, a connection plate is fixedly mounted on the outer surface of the differential case, and an upper surface of the connection plate is provided with mounting holes arranged at equal distances.

[0011] Preferably, a bearing is fixedly mounted on the left end of the bidirectional threaded rod, and the left side surface of the bearing is fixedly connected to the inner side wall of the planetary gear shaft body.

[0012] Preferably, a disc is fixedly mounted on the right end of the bidirectional threaded rod, and a rectangular groove is formed on the right side surface of the disc.

[0013] Preferably, a limit plate is fixedly mounted on the right end of the planetary gear shaft body, and a circular groove is formed on the right side surface of the limit plate.

[0014] Preferably, a reinforcement block is fixedly mounted on the upper surface of the connecting plate, and the inner wall of the reinforcement block is fixedly connected to the outer surface of the differential case.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a differential planetary gear shaft, which has the following beneficial effects:

[0017] The differential planetary gear shaft of the utility model can clamp and limit the planetary gear shaft body by being provided with a differential case, and the limiting bolt can limit and fix the planetary gear shaft body, and the conical block can be driven to move by rotating the two-way threaded rod, so that the conical block can squeeze the limiting block, so that the limiting block can be directly inserted into the limiting cylinder, thereby facilitating the connection of the planetary gear body, and the reverse rotation of the two-way threaded rod can drive the conical block to move, and the elasticity provided by the force spring can drive the insert block to return to its original position, thereby facilitating the disassembly of the planetary gear body, and facilitating the disassembly and installation of the planetary gear shaft body, so that the planetary gear shaft body can be easily replaced after being damaged or worn, thereby reducing the labor intensity of the staff and increasing the replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the connection disk of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the differential case body of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the planetary gear of the utility model in a right-side cutaway perspective;

[0021] Figure 4 It is a schematic diagram of the structure of the planetary gear shaft body of the utility model in a right side sectional three-dimensional view.

[0022] In the figure: 1. differential case; 2. planetary gear shaft body; 3. limit bolt; 4. planetary gear body; 5. limit cylinder; 6. bidirectional threaded rod; 7. conical block; 8. limit plate; 9. force spring; 10. limit block; 11. half-axle gear; 12. connecting shaft; 13. limit plate; 14. circular groove; 15. flange; 16. connecting hole; 17. mounting hole; 18. connecting plate; 19. bearing; 20. circular plate; 21. rectangular groove; 22. reinforcement block. DETAILED DESCRIPTION

[0023] In order to better understand the purpose, structure and function of the utility model, a differential planetary gear shaft of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0024] See also Figure 1-4 The utility model: a differential planetary gear shaft comprises a differential case 1, a planetary gear shaft body 2 is clamped inside the differential case 1, the inner wall of the planetary gear shaft body 2 is threadedly connected with a limiting bolt 3, two planetary gear bodies 4 are arranged inside the differential case 1, the inner wall of each planetary gear body 4 is rotatably connected with a limiting cylinder 5, the inner wall of each limiting cylinder 5 is in contact with the outer surface of the planetary gear shaft body 2, a bidirectional threaded rod 6 is rotatably connected inside the planetary gear shaft body 2, and the outer surface of the bidirectional threaded rod 6 is threadedly connected with two conical blocks 7, four limiting plates 8 are fixedly installed on the inner wall of the planetary gear shaft body 2, and a force spring 9 is fixedly installed on the upper surface and the bottom surface of each limit plate 8, and a limiting block 10 is fixedly installed on the end of each group of force springs 9 away from each other, and each limit block 10 is clamped inside the limit cylinder 5.

[0025] The outer surfaces of the two planetary gear bodies 4 are meshed with two half-shaft gears 11, and the side faces of the two half-shaft gears 11 that are away from each other are fixedly installed with connecting shafts 12. The connecting shafts 12 can drive the half-shaft gears 11 to rotate, thereby driving the planetary gear bodies 4 to rotate, thereby increasing the convenience of the device.

[0026] A flange 15 is fixedly installed at one end of the two connecting shafts 12 away from each other. The upper surface of each flange 15 is provided with connecting holes 16 arranged at equal distances. The flange 15 facilitates the connection between the connecting shaft 12 and the automobile axle, thereby facilitating the disassembly of the connecting shaft 12 and increasing the practicality of the device.

[0027] A connection plate 18 is fixedly mounted on the outer surface of the differential case 1, and mounting holes 17 arranged at equal distances are provided on the upper surface of the connection plate 18. The differential case 1 can be mounted through the connection plate 18, thereby facilitating the use of the device and further increasing the practicability of the device.

[0028] A bearing 19 is fixedly installed on the left end of the bidirectional threaded rod 6, and the left side surface of the bearing 19 is fixedly connected to the inner wall of the planetary gear shaft body 2. The bearing 19 can support the bidirectional threaded rod 6, thereby preventing the bidirectional threaded rod 6 from deviating during rotation, thereby increasing the stability of the bidirectional threaded rod 6.

[0029] A disc 20 is fixedly mounted on the right end of the bidirectional threaded rod 6 , and a rectangular groove 21 is provided on the right side of the disc 20 , which facilitates the insertion of external tools, thereby driving the bidirectional threaded rod 6 to rotate, thereby increasing the convenience of rotating the bidirectional threaded rod 6 .

[0030] A limit plate 13 is fixedly installed on the right end of the planetary gear shaft body 2, and a circular groove 14 is provided on the right side surface of the limit plate 13. The planetary gear shaft body 2 can be limited and fixed by the limit plate 13, thereby preventing the planetary gear shaft body 2 from deflecting and increasing the stability of the planetary gear shaft body 2.

[0031] A reinforcing block 22 is fixedly mounted on the upper surface of the connecting plate 18, and the inner wall of the reinforcing block 22 is fixedly connected to the outer surface of the differential case 1. The reinforcing block 22 can increase the stability of the differential case 1, thereby preventing the differential case 1 from shaking and increasing the stability of the differential case 1.

[0032] The working principle of the utility model is as follows: first, the differential planetary gear shaft can be installed through the limit plate 13, the flange 15 facilitates the connection between the connecting shaft 12 and the vehicle shaft, thereby facilitating the disassembly of the connecting shaft 12, the planetary gear shaft body 2 can be clamped and limited through the differential case 1, the limit bolt 3 can limit and fix the planetary gear shaft body 2, and the rectangular groove 21 facilitates the insertion of external tools, thereby driving the bidirectional threaded rod 6 to rotate, and the bidirectional threaded rod 6 can drive the conical block 7 to move, so that the conical block 7 can squeeze the limit block 10, so that the limit block 1 0 can be directly inserted into the limiting cylinder 5, so as to facilitate the connection of the planetary gear body 4, the reverse rotation of the bidirectional threaded rod 6 can drive the tapered block 7 to move, the bearing 19 can support the bidirectional threaded rod 6, so as to prevent the bidirectional threaded rod 6 from deflecting when rotating, and the elasticity provided by the force spring 9 can drive the insert block to return to its original position, so as to facilitate the disassembly of the planetary gear body 4, and to facilitate the disassembly and installation of the planetary gear shaft body 2, so that the planetary gear shaft body 2 can be easily replaced after being damaged or worn, thereby reducing the labor intensity of the staff and increasing the replacement efficiency.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A differential planetary gear shaft, comprising a differential case (1), characterized in that: A planetary gear shaft body (2) is clamped inside the differential case (1), and the inner wall of the planetary gear shaft body (2) is threadedly connected to a limit bolt (3). Two planetary gear bodies (4) are arranged inside the differential case (1), and the inner wall of each planetary gear body (4) is rotatably connected to a limit cylinder (5), and the inner wall of each limit cylinder (5) contacts the outer surface of the planetary gear shaft body (2). A bidirectional threaded rod (6) is rotatably connected inside the planetary gear shaft body (2), and the outer surface of the bidirectional threaded rod (6) is threadedly connected to two conical blocks (7). Four limit plates (8) are fixedly mounted on the inner wall of the planetary gear shaft body (2), and a force spring (9) is fixedly mounted on the upper surface and the bottom surface of each limit plate (8). A limit block (10) is fixedly mounted on one end of each group of force springs (9) that is away from each other, and each limit block (10) is clamped inside the limit cylinder (5).

2. A differential planetary gear shaft according to claim 1, characterized in that: Two half-shaft gears (11) are meshed together on the outer surfaces of the two planetary gear bodies (4), and a connecting shaft (12) is fixedly mounted on the side surfaces of the two half-shaft gears (11) that are away from each other.

3. A differential planetary gear shaft according to claim 2, characterized in that: A flange (15) is fixedly mounted on one end of the two connecting shafts (12) that is away from each other, and the upper surface of each flange (15) is provided with connecting holes (16) arranged at equal distances.

4. The differential planetary gear shaft according to claim 1, characterized in that: A connection plate (18) is fixedly mounted on the outer surface of the differential case (1), and mounting holes (17) arranged at equal distances are formed on the upper surface of the connection plate (18).

5. The differential planetary gear shaft according to claim 1, characterized in that: A bearing (19) is fixedly mounted on the left end of the bidirectional threaded rod (6), and the left side surface of the bearing (19) is fixedly connected to the inner side wall of the planetary gear shaft body (2).

6. The differential planetary gear shaft according to claim 1, characterized in that: A disc (20) is fixedly mounted on the right end of the bidirectional threaded rod (6), and a rectangular groove (21) is formed on the right side surface of the disc (20).

7. The differential planetary gear shaft according to claim 1, characterized in that: A limiting plate (13) is fixedly mounted on the right end of the planetary gear shaft body (2), and a circular groove (14) is provided on the right side surface of the limiting plate (13).

8. The differential planetary gear shaft according to claim 4, characterized in that: A reinforcing block (22) is fixedly mounted on the upper surface of the connecting plate (18), and an inner wall of the reinforcing block (22) is fixedly connected to the outer surface of the differential case (1).

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