Synchronous output shaft transmission structure of planetary reducer

Abstract

The utility model provides a synchronous output shaft transmission structure of a planetary reducer. The synchronous output shaft transmission structure comprises a transmission box body, a driving output shaft, a driven output shaft and a transmission gear set, the driven output shaft and the driving output shaft are installed in the transmission box body in a left-right distribution mode, a driving gear is installed on the driving output shaft, a driven gear is installed on the driven output shaft, the transmission gear set is installed in the transmission box body and is in transmission connection between the driving gear and the driven gear, and the transmission gear set comprises a plurality of transmission gears. The plurality of transmission gears are distributed left and right; the plurality of transmission gears are arranged from left to right one by one in an up-and-down staggered manner to form upper and lower rows of transmission gears; the axis height of the transmission gears in the upper row is larger than the axis height of the driving output shaft and the driven output shaft, and the axis height of the transmission gears in the lower row is smaller than the axis height of the driving output shaft and the driven output shaft. The transmission gear at the leftmost end is meshed with the driven gear, the transmission gear at the rightmost end is meshed with the driving gear, and the adjacent transmission gears are meshed with each other.

Description

Technical Field

[0001] This utility model relates to the field of planetary reducer technology, and in particular to a synchronous output shaft transmission structure for a planetary reducer. Background Technology

[0002] Planetary gear reducers need to be adapted to different output methods depending on the application scenario. Currently, a dual-shaft synchronous output planetary gear reducer is needed, with a fixed distance between the two output shafts. It is necessary to ensure that the two output shafts are in the same direction and output synchronously. In the past, the two output shafts were driven by linearly distributed transmission gears. However, since gear manufacturing has errors, and the more gears are used between the two output shafts, the lower the error tolerance rate will be. Otherwise, the product cannot be properly assembled and used. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a synchronous output shaft transmission structure for a planetary reducer to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A planetary reducer synchronous output shaft transmission structure includes a transmission housing, a driving output shaft, a driven output shaft, and a transmission gear set. The driving output shaft is rotatably connected to the right side of the transmission housing via two first bearings. A driving gear is mounted in the middle of the driving output shaft. The rear end of the driving output shaft extends beyond the rear side of the transmission housing for connecting to the output end of the planetary reducer, and the front end extends beyond the front side of the transmission housing for outputting power. A first flat keyway is provided at the front end of the driving output shaft. The driven output shaft is rotatably connected to the left side of the transmission housing via two second bearings. The driven output shaft and the driving output shaft are at the same axial height. A driven gear is mounted in the middle of the driven output shaft. The front end of the driven output shaft extends beyond the front side of the transmission housing. The front end of the drive output shaft is provided with a second flat keyway; the second flat keyway and the first flat keyway are opened in the same direction; the transmission gear set includes a plurality of transmission gears; the front and rear ends of the plurality of transmission gears are respectively rotatably connected to the transmission housing through a third bearing and are distributed left and right between the drive gear and the driven gear; the plurality of transmission gears are arranged staggered vertically from left to right to form two rows of transmission gears; the shaft center height of the upper row of transmission gears is higher than the shaft center height of the drive output shaft and the driven output shaft, and the shaft center height of the lower row of transmission gears is lower than the shaft center height of the drive output shaft and the driven output shaft; the leftmost transmission gear meshes with the driven gear, the rightmost transmission gear meshes with the drive gear, and adjacent transmission gears mesh with each other.

[0006] In a further description of this utility model, the transmission housing includes a front cover and a rear cover; the front cover is fixedly connected to the rear cover by a plurality of first screws; the rear cover is fixedly connected to the front cover by a plurality of second screws.

[0007] In a further description of this utility model, the active output shaft is connected to the active gear via a keyway; the driven output shaft is connected to the driven gear via a keyway.

[0008] In a further description of the present invention, two first flat keyways are provided at the front end of the active output shaft, and the two first flat keyways are evenly distributed around the circumference; two second flat keyways are provided at the front end of the driven output shaft, and the two second flat keyways are evenly distributed around the circumference.

[0009] In a further description of this utility model, a set screw is installed at the top of the transmission housing corresponding to the third bearing position of the upper row of transmission gears; the lower end of the set screw abuts against the top of the third bearing at the corresponding position.

[0010] As further described in this utility model, the transmission gear set includes four transmission gears.

[0011] The beneficial effects of this utility model are as follows:

[0012] The active and driven output shafts of this design form a dual output shaft with the same output direction and the same direction of the keyways. They output power synchronously. The transmission gear set is connected between the active and driven gears and forms two rows of transmission gears that are staggered vertically. This results in a height difference between the shaft centers of adjacent gears. By meshing with adjacent gears at a certain angle, errors can be easily adjusted. This distribution method can also adapt to synchronous dual-output transmissions with narrower distances. Attached Figure Description

[0013] Figure 1 This is an overall structural diagram of the present invention;

[0014] Figure 2 This is a diagram of the internal structure of this utility model. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] like Figure 1-2As shown, a planetary reducer synchronous output shaft transmission structure includes a transmission housing 1, a driving output shaft 2, a driven output shaft 3, and a transmission gear set 4. The driving output shaft 2 is rotatably connected to the right side of the transmission housing 1 via two first bearings 201. A driving gear 202 is installed in the middle of the driving output shaft 2. The rear end of the driving output shaft 2 extends out from the rear side of the transmission housing 1 for connecting to the output end of the planetary reducer, and the front end extends out from the front side of the transmission housing 1 for outputting power. A first flat keyway 21 is provided at the front end of the driving output shaft 2. The driven output shaft 3... The driven output shaft 3 is rotatably connected to the left side of the transmission housing 1 via two second bearings 301; the driven output shaft 3 and the driving output shaft 2 are at the same axial height; a driven gear 302 is installed in the middle of the driven output shaft 3; the front end of the driven output shaft 3 extends out of the front side of the transmission housing 1; a second flat keyway 31 is provided at the front end of the driven output shaft 3; the second flat keyway 31 and the first flat keyway 21 are in the same direction; the transmission gear set 4 includes several transmission gears 41; the front and rear ends of the several transmission gears 41 are respectively connected by third bearings 410. A drive gear 41 is rotatably connected within the transmission housing 1 and is arranged horizontally between the drive gear 202 and the driven gear 302. Several drive gears 41 are arranged staggered vertically from left to right, forming two rows of drive gears 41. The shaft center height of the upper row of drive gears 41 is higher than that of the drive output shaft 2 and the driven output shaft 3, while the shaft center height of the lower row of drive gears 41 is lower than that of the drive output shaft 2 and the driven output shaft 3. The leftmost drive gear 41 meshes with the driven gear 302, and the rightmost drive gear 41 meshes with the drive gear 202. The adjacent transmission gears 41 mesh with each other; the active output shaft 2 and the driven output shaft 3 form a double output shaft with the output direction of the two output shafts being the same and the direction of the keyway being the same, so as to output power synchronously. The transmission gear set 4 is connected between the active gear 202 and the driven gear 302, and forms two rows of transmission gears 41 that are staggered vertically, so that there is a height difference between the shaft centers of the two adjacent gears. By meshing with the adjacent gears at a certain angle, it is easy to adjust the error, and this distribution method can adapt to synchronous double output transmission with a narrower distance.

[0017] The transmission housing 1 includes a front cover 11 and a rear cover 12; the front cover 11 is fixedly connected to the rear cover 12 by a number of first screws 111; the rear cover 12 is fixedly connected to the front cover 11 by a number of second screws 121, which locks in both directions and improves the stability of the transmission housing 1.

[0018] The active output shaft 2 is connected to the active gear 202 via a keyway; the driven output shaft 3 is connected to the driven gear 302 via a keyway, and this assembly method is stable.

[0019] Two first flat keyways 21 are provided at the front end of the active output shaft 2, and the two first flat keyways 21 are evenly distributed around the circumference; two second flat keyways 31 are provided at the front end of the driven output shaft 3, and the two second flat keyways 31 are evenly distributed around the circumference. The two flat keyways are connected to the component to be driven to improve stability.

[0020] A set screw 101 is installed at the top of the transmission housing 1 at the position of the third bearing 4101 of the upper row of transmission gears 41. The lower end of the set screw 101 abuts against the top of the third bearing 4101 at the corresponding position, pressing the upper row of third bearings 4101 tightly to improve stability.

[0021] In this design, the transmission gear set 4 includes four transmission gears 41.

[0022] The above description does not limit the technical scope of this invention. Any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this invention shall still fall within the scope of the technical solution of this invention.

Claims

1. A synchronous output shaft transmission structure for a planetary reducer, characterized in that: The transmission includes a transmission housing, a drive output shaft, a driven output shaft, and a transmission gear set. The drive output shaft is rotatably connected to the right side of the transmission housing via two first bearings. A drive gear is mounted in the middle of the drive output shaft. The rear end of the drive output shaft extends beyond the rear side of the transmission housing for connecting to the output end of a planetary reducer, and the front end extends beyond the front side of the transmission housing for outputting power. A first keyway is provided at the front end of the drive output shaft. The driven output shaft is rotatably connected to the left side of the transmission housing via two second bearings. The driven output shaft and the drive output shaft are at the same axial height. A driven gear is mounted in the middle of the driven output shaft. The front end of the driven output shaft extends beyond the front side of the transmission housing. A first keyway is provided at the front end of the driven output shaft. There is a second flat keyway; the second flat keyway and the first flat keyway have the same opening direction; the transmission gear set includes several transmission gears; the front and rear ends of the several transmission gears are respectively rotatably connected to the transmission housing through a third bearing and are distributed left and right between the driving gear and the driven gear; the several transmission gears are arranged vertically and vertically staggered from left to right to form two rows of transmission gears; the shaft center height of the upper row of transmission gears is higher than the shaft center height of the driving output shaft and the driven output shaft, and the shaft center height of the lower row of transmission gears is lower than the shaft center height of the driving output shaft and the driven output shaft; the leftmost transmission gear meshes with the driven gear, the rightmost transmission gear meshes with the driving gear, and adjacent transmission gears mesh with each other.

2. The planetary reducer synchronous output shaft transmission structure according to claim 1, characterized in that: The transmission housing includes a front cover and a rear cover; the front cover is fixedly connected to the rear cover by a number of first screws; the rear cover is fixedly connected to the front cover by a number of second screws.

3. The planetary reducer synchronous output shaft transmission structure according to claim 1, characterized in that: The active output shaft is connected to the active gear via a keyway; the driven output shaft is connected to the driven gear via a keyway.

4. The synchronous output shaft transmission structure of a planetary reducer according to claim 1, characterized in that: The active output shaft has two first flat keyways at its front end, which are evenly distributed around its circumference; the driven output shaft has two second flat keyways at its front end, which are evenly distributed around its circumference.

5. The synchronous output shaft transmission structure of a planetary reducer according to claim 1, characterized in that: Each of the top of the transmission housing is equipped with a set screw at the position of the third bearing of the upper row of transmission gears; the lower end of the set screw abuts against the top of the third bearing at the corresponding position.

6. The synchronous output shaft transmission structure of a planetary reducer according to claim 1, characterized in that: The transmission gear set contains four transmission gears.

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