Planetary gear pin shaft of gearbox

Abstract

The utility model relates to the technical field of planetary gear devices, in particular to a gearbox planetary gear pin shaft which comprises a planet carrier, a pin shaft body, a positioning assembly and a fixing assembly, a rectangular sleeve block is fixedly installed on the periphery of the pin shaft body, a through rectangular groove is formed in the surface of the planet carrier, and the rectangular sleeve block is located in the rectangular groove. A first threaded hole is reserved in the side face of the planet carrier. Compared with an existing planetary gear pin shaft which is generally embedded in a planet carrier in an interference mode, in the transmission process of a planetary gear, the planetary gear pin shaft is prone to loosening and even falling off due to the influence of stress and vibration; according to the utility model, the rectangular sleeve block can be sleeved in the rectangular groove, so that the pin shaft body is embedded and sleeved in the planet carrier, the phenomenon of stress concentration can be reduced, the overall strength is improved, and the planet gear pin shaft is prevented from loosening and even falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear devices, in particular to a planetary gear pin shaft of a gearbox. Background Art

[0002] The planetary gear pin shaft of a gearbox is an important component connecting the planetary gear and the planet carrier. It allows the planetary gear to rotate around its own axis while also rotating around the axis of other gears with the planet carrier, thereby achieving complex transmission ratio changes.

[0003] Currently, the planetary gear pin shafts are generally press-fitted and embedded in the planet carrier. During the transmission of the planetary gear, the planetary gear pin shafts are prone to looseness or even detachment due to the influence of force and vibration.

[0004] Therefore, aiming at the problem that currently the planetary gear pin shafts are generally press-fitted and embedded in the planet carrier, and during the transmission of the planetary gear, the planetary gear pin shafts are prone to looseness or even detachment due to the influence of force and vibration, a planetary gear pin shaft of a gearbox can be designed. By installing a rectangular sleeve block on the periphery of the pin shaft and cooperating with a rectangular groove opened on the planet carrier, the phenomenon of stress concentration can be reduced, and the overall strength can be improved. Content of the Utility Model

[0005] In order to overcome the problem that currently the planetary gear pin shafts are generally press-fitted and embedded in the planet carrier, and during the transmission of the planetary gear, the planetary gear pin shafts are prone to looseness or even detachment due to the influence of force and vibration.

[0006] The technical solution of the utility model is: a planetary gear pin shaft of a gearbox, including a planet carrier, a pin shaft body, a positioning component and a fixing component. A rectangular sleeve block is fixedly installed on the periphery of the pin shaft body. A through rectangular groove is opened on the surface of the planet carrier. The rectangular sleeve block is located inside the rectangular groove. A first threaded hole is reserved on the side surface of the planet carrier. The positioning component is arranged inside the first threaded hole. The fixing component is arranged on one side of the rectangular sleeve block.

[0007] Preferably, by setting the rectangular sleeve block, it can be inserted into the rectangular groove, thereby inlaying the pin shaft body in the planet carrier, which can reduce the phenomenon of stress concentration and improve the overall strength. By setting the first threaded hole, it can cooperate with the positioning component to position the rectangular sleeve block. By setting the fixing component, the pin shaft body can be fixed to prevent the pin shaft body from creeping in the axial direction, ensuring the stability and reliability of the transmission.

[0008] Preferably, the positioning component includes a first bolt and a gasket. The first bolt is disposed inside the first threaded hole. The first bolt penetrates through the planet carrier and the rectangular sleeve block, and is threadedly connected to the rectangular sleeve block and the planet carrier. The gasket is disposed around the first bolt and is threadedly connected to the first bolt.

[0009] Preferably, the fixing component includes a rotating shaft, a collar and a fixing block. The rotating shaft is fixedly installed on one side of the rectangular sleeve block. The collar is sleeved around the rotating shaft and is rotatably connected to the rotating shaft. Two fixing blocks are fixedly installed on the outer periphery of the collar.

[0010] Preferably, the fixing component includes a second threaded hole, a second bolt and a rubber pad. A second threaded hole is formed on the surface of the rotating shaft. The second bolt is disposed inside the second threaded hole and is threadedly connected to the rotating shaft through the second threaded hole. The rubber pad is fixedly installed around the second bolt and is located above the rotating shaft.

[0011] Preferably, an axial oil hole is reserved at one end of the pin shaft body, and a radial oil hole is reserved on the side wall of the pin shaft body.

[0012] Preferably, the lower end of the radial oil hole communicates with the axial oil hole.

[0013] Preferably, a bearing is disposed around the pin shaft body. The planet gear body is rotatably connected to the pin shaft body through the bearing. The radial oil hole is located inside the planet gear body.

[0014] Advantages of the present utility model:

[0015] 1. Compared with the current planetary gear pin shafts which are generally press-fitted into the planet carrier, during the transmission of the planetary gear, the planetary gear pin shaft is prone to looseness or even detachment due to the influence of force and vibration; in the present utility model, by providing a rectangular sleeve block that can be inserted into the rectangular groove, the pin shaft body can be inlaid in the planet carrier, which can reduce the stress concentration phenomenon, improve the overall strength, and prevent the planetary gear pin shaft from loosening or even detaching. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is the first three-dimensional structural schematic diagram of the planetary gear pin shaft of the transmission of the present utility model;

[0017] Figure 2 Shown is the exploded three-dimensional structural schematic diagram of the fixing component of the planetary gear pin shaft of the transmission of the present utility model;

[0018] Figure 3 Shown is the second three-dimensional structural schematic diagram of the planetary gear pin shaft of the transmission of the present utility model;

[0019] Figure 4The figure shows a schematic three-dimensional cross-sectional structure diagram of the pin shaft body of the planetary gear of the transmission of the present utility model;

[0020] Explanation of reference numerals: 1. Planet carrier; 2. Pin shaft body; 301. Rectangular sleeve block; 302. Rectangular groove; 303. First threaded hole; 401. First bolt; 402. Gasket; 501. Rotating shaft; 502. Collar; 503. Fixed block; 504. Second threaded hole; 505. Second bolt; 506. Rubber gasket; 601. Radial oil hole; 602. Axial oil hole; 701. Bearing; 702. Planet gear body. Detailed implementation manners

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0022] Please refer to Figures 1-4 , the present utility model provides an embodiment: a planetary gear pin shaft of a transmission, including a planet carrier 1, a pin shaft body 2, a positioning component and a fixing component. A rectangular sleeve block 301 is fixedly installed on the periphery of the pin shaft body 2. A through rectangular groove 302 is formed on the surface of the planet carrier 1. The rectangular sleeve block 301 is located inside the rectangular groove 302. A first threaded hole 303 is reserved on the side surface of the planet carrier 1. The positioning component is arranged inside the first threaded hole 303. The fixing component is arranged on one side of the rectangular sleeve block 301; by providing the rectangular sleeve block 301, it can be inserted into the rectangular groove 302, so that the pin shaft body 2 can be inserted and sleeved inside the planet carrier 1, which can reduce the phenomenon of stress concentration and improve the overall strength. By providing the first threaded hole 303, it can cooperate with the positioning component to position the rectangular sleeve block 301. By providing the fixing component, the pin shaft body 2 can be fixed to prevent the pin shaft body 2 from creeping in the axial direction, ensuring the stability and reliability of the transmission.

[0023] Please refer to Figures 1-2, in this embodiment, the positioning component includes a first bolt 401 and a gasket 402. The first bolt 401 is arranged inside the first threaded hole 303. The first bolt 401 penetrates through the planet carrier 1 and the rectangular sleeve block 301. The first bolt 401 is threadedly connected to the rectangular sleeve block 301 and threadedly connected to the planet carrier 1. The gasket 402 is arranged around the first bolt 401 and threadedly connected to the first bolt 401. By setting the first bolt 401, the rectangular sleeve block 301 can be positioned in the rectangular groove 302 inside the planet carrier 1. By setting the gasket 402, the first bolt 401 can be installed more firmly to prevent loosening. The fixing component includes a rotating shaft 501, a collar 502, and a fixing block 503. The rotating shaft 501 is fixedly installed on one side of the rectangular sleeve block 301. The collar 502 is sleeved around the rotating shaft 501 and rotatably connected to the rotating shaft 501. Two fixing blocks 503 are fixedly installed on the outer periphery of the collar 502. By setting the rotating shaft 501 to install the collar 502, by setting the collar 502 to install the fixing block 503, and by setting the fixing block 503 to fix the rectangular sleeve block 301, the creep of the pin shaft body 2 in the axial direction can be prevented, ensuring the stability and reliability of the transmission. The fixing component includes a second threaded hole 504, a second bolt 505, and a rubber pad 506. A second threaded hole 504 is formed on the surface of the rotating shaft 501. The second bolt 505 is arranged inside the second threaded hole 504. The second bolt 505 is threadedly connected to the rotating shaft 501 through the second threaded hole 504. The rubber pad 506 is fixedly installed around the second bolt 505 and is located above the rotating shaft 501. By setting the second bolt 505 to rotate in the second threaded hole 504, the collar 502 can be pressed tightly by setting the rubber pad 506 to lock the collar 502.

[0024] Please refer to Figures 3-4 , in this embodiment, an axial oil hole 602 is reserved at one end of the pin shaft body 2, and a radial oil hole 601 is reserved on the side wall of the pin shaft body 2. The lower end of the radial oil hole 601 communicates with the axial oil hole 602. By setting the axial oil hole 602, lubricating oil can be added to the inside of the pin shaft body 2. By setting the radial oil hole 601, good lubrication and heat dissipation can be achieved synchronously during operation to extend the service life. A bearing 701 is arranged around the pin shaft body 2. The planetary gear body 702 is rotatably connected to the pin shaft body 2 through the bearing 701. The radial oil hole 601 is located inside the planetary gear body 702. By setting the bearing 701, the planetary gear body 702 can be rotatably connected to the pin shaft body 2.

[0025] During operation, the rectangular sleeve block 301 is sleeved inside the rectangular groove 302, so that the pin shaft body 2 can be sleeved into the inside of the planet carrier 1.

[0026] The rectangular sleeve block 301 can be positioned on the planet carrier 1 by using the first bolt 401. Loosen the second bolt 505, and rotate the collar 502 on the rotating shaft 501, so that the fixed block 503 rotates to contact the planet carrier 1. Then lock the second bolt 505, and fix the collar 502 by using the rubber pad 506. Fix the pin shaft body 2 by using the fixed block 503 to prevent the pin shaft body 2 from creeping in the axial direction, ensuring the stability and reliability of the transmission.

[0027] When disassembly is required, loosen the second bolt 505, rotate the collar 502 to turn the height block above the rectangular sleeve block 301, and remove the first bolt 401, then the pin shaft body 2 can be conveniently taken out from the rectangular groove 302 inside the planet carrier 1.

[0028] By using the axial oil hole 602, lubricating oil can be added to the inside of the pin shaft body 2. By using the radial oil hole 601, good lubrication and heat dissipation can be synchronously achieved during the operation of the planetary gear body 702, so as to extend the service life.

[0029] Through the above steps, by setting that the rectangular sleeve block 301 can be sleeved into the rectangular groove 302, the pin shaft body 2 can be inlaid inside the planet carrier 1, which can reduce the phenomenon of stress concentration, improve the overall strength, and prevent the planetary gear pin shaft from loosening or even falling off, so as to solve the problem that the current planetary gear pin shafts are generally interference-fitted inside the planet carrier 1, and during the process of planetary gear transmission, the planetary gear pin shafts are prone to loosen or even fall off due to the influence of force and vibration.

[0030] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. A planetary gear pin of a gearbox, comprising a planet carrier (1) and a pin body (2); characterized in that: The invention also comprises a positioning component and a fixing component, wherein a rectangular sleeve (301) is fixedly mounted on the periphery of the pin shaft body (2), a through rectangular groove (302) is provided on the surface of the planetary frame (1), the rectangular sleeve (301) is located inside the rectangular groove (302), a first threaded hole (303) is reserved on the side of the planetary frame (1), the positioning component is arranged inside the first threaded hole (303), and the fixing component is arranged on one side of the rectangular sleeve (301).

2. The planetary gear pin of a gearbox according to claim 1, characterized in that: The positioning assembly comprises a first bolt (401) and a gasket (402); the first bolt (401) is arranged inside the first threaded hole (303); the first bolt (401) passes through the planetary frame (1) and the rectangular sleeve (301); the first bolt (401) is threadedly connected to the rectangular sleeve (301); the first bolt (401) is threadedly connected to the planetary frame (1); the gasket (402) is arranged on the periphery of the first bolt (401); and the gasket (402) is threadedly connected to the first bolt (401).

3. The planetary gear pin of a gearbox according to claim 1, characterized in that: The fixing assembly comprises a rotating shaft (501), a sleeve ring (502) and a fixing block (503). The rotating shaft (501) is fixedly mounted on one side of a rectangular sleeve block (301). The sleeve ring (502) is sleeved on the periphery of the rotating shaft (501). The sleeve ring (502) is rotatably connected to the rotating shaft (501). Two groups of fixing blocks (503) are fixedly mounted on the periphery of the sleeve ring (502).

4. The planetary gear pin of a gearbox according to claim 3, characterized in that: The fixing assembly comprises a second threaded hole (504), a second bolt (505) and a rubber pad (506); the second threaded hole (504) is opened on the surface of the rotating shaft (501); the second bolt (505) is arranged inside the second threaded hole (504); the second bolt (505) is threadedly connected to the rotating shaft (501) through the second threaded hole (504); the rubber pad (506) is fixedly installed on the periphery of the second bolt (505); and the rubber pad (506) is located above the rotating shaft (501).

5. The planetary gear pin of a gearbox according to claim 1, characterized in that: An axial oil hole (602) is reserved at one end of the pin shaft body (2), and a radial oil hole (601) is reserved on the side wall of the pin shaft body (2).

6. The planetary gear pin of a gearbox according to claim 5, characterized in that: The lower end of the radial oil hole (601) and the axial oil hole (602) are interconnected.

7. The planetary gear pin of a gearbox according to claim 5, characterized in that: A bearing (701) is disposed on the periphery of the pin shaft body (2), the planetary gear body (702) is rotatably connected to the pin shaft body (2) via the bearing (701), and the radial oil hole (601) is located inside the planetary gear body (702).

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