CN212455372U

CN212455372U - Planetary reducer with rolling bearing

Info

Publication number: CN212455372U
Application number: CN202020986422.1U
Authority: CN
Inventors: 王愿坚; 王忠引; 王超
Original assignee: Ningbo Linjian Intelligent Technology Co ltd
Current assignee: Ningbo Linjian Intelligent Technology Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-02-02
Anticipated expiration: 2030-06-03

Abstract

The utility model provides a take antifriction bearing's planetary reducer, include: the planetary speed reducer comprises a shell and a planetary speed reducing mechanism arranged in the shell, wherein an output connecting piece with an output shaft section is arranged at the lower end of the shell; the output connecting piece is rotationally connected with an output planet carrier of the planetary reduction mechanism; the shell is in output connecting piece one side is installed antifriction bearing, antifriction bearing's inner circle with the output shaft section is connected, planetary reduction mechanism includes interconnect's first order speed reduction group and second grade speed reduction group. The utility model reduces the play of the planetary reduction mechanism in the axial direction through the rolling bearing, the radial rotation of the output connecting piece becomes smoother, the energy consumption loss is reduced, and the operation noise is reduced; the whole friction is changed from the original sliding friction into rolling friction, and the transmission efficiency, the energy consumption and the noise of the whole planetary reducer are effectively improved.

Description

Planetary reducer with rolling bearing

Technical Field

The utility model relates to a reduction gear technical field, in particular to take antifriction bearing's planetary reducer.

Background

The decelerator is often used as a deceleration transmission between the prime mover and the working machine. The function of matching the rotating speed and transmitting the torque between a prime mover and a working machine or an actuating mechanism is very widely applied to modern machines, and is a main component which plays a role in reducing the rotating speed and increasing the torque in a transmission system. The principle of the planetary reduction gear is a power transmission mechanism that uses a gear speed converter to reduce the number of revolutions of a motor to a desired number of revolutions and obtain a large torque. The gear with less teeth on the transmission shaft of the planetary reducer is meshed with the big gear on the output shaft to achieve the purpose of speed reduction. The planetary reducer has the advantages of small volume, light weight, high bearing capacity, long service life, stable operation and low noise. Has the unique characteristics of power splitting and multi-tooth meshing.

Some traditional speed reduction structure's requirements are higher and higher in the intelligent transmission, because the cluster in whole drive mechanism moves about, leads to the unstability of output operation process at present planet wheel primary drive in-process to great noise has been produced, thereby lead to customer experience to descend, simultaneously, increased the energy consumption, there is great influence to the green of enterprise's product requirement. Therefore, a good auxiliary mechanism is needed to achieve stable transmission and limit up-and-down movement of the planet wheel.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The to-be-solved technical problem of the utility model is to provide a take antifriction bearing's planetary reducer can realize steady transmission, and through setting up antifriction bearing, the upper and lower drunkenness of planet wheel mechanism has further been restricted simultaneously.

(II) technical scheme

In order to solve the technical problem, the utility model provides a take antifriction bearing's planetary reducer, include: the planetary speed reducer comprises a shell and a planetary speed reducing mechanism arranged in the shell, wherein an output connecting piece with an output shaft section is arranged at the lower end of the shell, and the output shaft section is used for being connected with an external transmission shaft; the output connecting piece is rotationally connected with an output planet carrier of the planetary reduction mechanism; and the shell is provided with a rolling bearing on one side of the output connecting piece, and an inner ring of the rolling bearing is connected with the output shaft section. The outer ring of the rolling bearing is fixed in the shell, the inner ring of the rolling bearing is fixedly connected with the outer circumferential surface of the output shaft section of the output connecting piece, the output connecting piece is fixedly connected with an external transmission shaft, the rolling bearing is used for limiting the planetary speed reducing mechanism, the play of the planetary speed reducing mechanism in the axial direction is reduced, the radial rotation is smoother, the energy consumption loss is reduced, and the operation noise is reduced; the whole friction is changed from the original sliding friction into rolling friction, and the transmission efficiency, the energy consumption and the noise of the whole planetary reducer are effectively improved.

Further, the rolling bearing is a ball bearing or a thrust bearing.

Further, the planetary reduction mechanism comprises a primary reduction group and a secondary reduction group which are connected with each other. Through setting up two speed reduction groups, with the driving link speed reduction transmission of outside high rotational speed to the working machine on, effectively reduced the operation rotational speed.

Further, the primary reduction group comprises an input planet carrier, a plurality of primary planet gears arranged on the input planet carrier and a primary gear ring arranged inside the upper end of the shell; the primary planet gear is meshed with the primary gear ring.

Further, the two-stage reduction group comprises the output planet carrier and a plurality of two-stage planet gears arranged on the output planet carrier; the inside second grade ring gear that is provided with of casing lower extreme, second grade planetary gear with the meshing of second grade ring gear, the sun gear axle of output planet carrier upper end with the meshing of one-level planetary gear, through sun gear axle with the meshing of one-level planetary gear, with one-level speed reduction group and the transmission of second grade speed reduction group couple together. Through setting up one-level speed reduction group and second grade speed reduction group, effectively reduced the operation rotational speed, two speed reduction group integrations are in the casing, holistic compact structure.

Further, the secondary gear ring and the shell are integrally formed.

Furthermore, the first-stage planetary gear is installed on a first support shaft of the input planet carrier, the second-stage planetary gear is installed on a second support shaft of the output planet carrier, a positioning end cover is installed on one side of the first support shaft, and the output connecting piece is installed on one side of the second support shaft.

Furthermore, one side of the positioning end cover, which is close to the output planet carrier, is provided with an annular arc-shaped protruding part; and one end of the output connecting piece, which is close to the inner side wall of the shell, is provided with an arc-shaped protruding part with the same structure.

Further, an input shaft section is arranged at the upper end of the input planet carrier, a sealing end cover is mounted on the input shaft section, the sealing end cover is axially limited through a clamp spring mounted on the input shaft section, and a power input port is formed in the end portion of the input shaft section; the output shaft section is provided with a power output port connected with an external transmission shaft.

(III) advantageous effects

The utility model discloses take antifriction bearing's planetary reducer compares prior art and has following advantage:

1) the rolling bearing is arranged on one side, close to the output connecting piece, of the shell, so that the play of the speed reducing mechanism in the axial direction is reduced, the radial rotation of the output end is smoother, the energy consumption loss is reduced, the operation noise is reduced, and the service life of the whole product is effectively prolonged;

2) meanwhile, the planetary reduction mechanism comprises two reduction groups integrated in the shell, the whole structure is light and compact, and the running rotating speed is effectively reduced.

Drawings

FIG. 1 is a schematic structural view of a planetary reducer with a rolling bearing according to the present invention;

wherein: the structure comprises a shell 1, an output shaft section 2, an output connecting piece 3, an output planet carrier 4, an input planet carrier 5, a first-stage planetary gear 6, a first-stage gear ring 7, a second-stage planetary gear 8, a second-stage gear ring 9, a central gear shaft 10, a first support shaft 11, a second support shaft 12, a positioning end cover 13, an arc-shaped protruding part 14, an input shaft section 15, a sealing end cover 16, a power input port 17, a power output port 18, a snap spring 19 and a rolling bearing 20.

Detailed Description

Referring to fig. 1, the utility model provides a take antifriction bearing's planetary reducer, include: the planetary speed reducer comprises a shell 1 and a planetary speed reducing mechanism arranged in the shell 1, wherein an output connecting piece 3 with an output shaft section 2 is arranged at the lower end of the shell 1, and the output shaft section 2 is used for being connected with an external transmission shaft; the output connecting piece 3 is rotationally connected with an output planet carrier 4 of the planetary reduction mechanism; the housing 1 is provided with a rolling bearing 20 on the side of the output connection piece 3, and the inner ring of the rolling bearing 4 is connected with the output shaft section 2.

The outer ring of the rolling bearing 20 is fixed in the shell 1, the inner ring of the rolling bearing is fixedly connected with the outer circumferential surface of the output shaft section 2 of the output connecting piece 3, the output connecting piece 3 is fixedly connected with an external transmission shaft, the rolling bearing 20 is used for limiting the planetary speed reducing mechanism, the play in the axial direction is reduced, the radial rotation is smoother, the energy consumption loss is reduced, and the operation noise is reduced; the whole friction is changed from the original sliding friction into rolling friction, the transmission efficiency, the energy consumption and the noise of the whole planetary reducer are effectively improved, and the service life of the whole product is prolonged.

The rolling bearing 20 in the present embodiment is a ball bearing, and may be provided as a thrust bearing.

Referring to fig. 1, the planetary reduction mechanism includes a primary reduction group and a secondary reduction group connected to each other. The first-stage reduction group comprises an input planet carrier 5, a plurality of first-stage planet gears 6 arranged on the input planet carrier 5 and a first-stage gear ring 7 arranged inside the upper end of the shell 1; the primary planet gears 6 mesh with a primary ring gear 7. The secondary reduction group comprises an output planet carrier 4 and a plurality of secondary planet gears 8 arranged on the output planet carrier 4; a secondary gear ring 9 is arranged inside the lower end of the shell 1, and in the embodiment, the secondary gear ring 9 is integrally formed with the shell 1; the secondary planet gear 8 is meshed with the secondary gear ring 9, a central gear shaft 10 at the upper end of the output planet carrier 4 is meshed with the primary planet gear 6, and the primary speed reduction group and the secondary speed reduction group are connected in a transmission mode through the meshing of the central gear shaft 10 and the primary planet gear 6.

Through setting up one-level speed reduction group and second grade speed reduction group, with the high rotational speed of outside on the driving link speed reduction transmission to the working machine, effectively reduced the operation rotational speed, two speed reduction group are integrated in casing 1, holistic compact structure.

Referring to fig. 1, the primary planetary gear 6 is mounted on a first carrier shaft 11 of the input carrier 5, the secondary planetary gear 8 is mounted on a second carrier shaft 12 of the output carrier 4, a positioning end cover 13 is mounted on one side of the first carrier shaft 11, and the output connecting member 3 is mounted on one side of the second carrier shaft 12. An annular arc-shaped bulge part 14 is arranged on one side, close to the output planet carrier 4, of the positioning end cover 13; one end of the output connecting piece 3 close to the inner side wall of the shell 1 is provided with an arc-shaped convex part 14 with the same structure.

The upper end of the input planet carrier 5 is provided with an input shaft section 15, the input shaft section 15 is provided with a sealing end cover 16, the sealing end cover 16 is axially limited by a clamp spring 19 arranged on the input shaft section 15, and the end part of the input shaft section 15 is provided with a power input port 17; the output shaft section 2 is provided with a power take-off 18 connected to an external drive shaft.

Wherein the power input port 17 may be provided in an internal hexagonal shape or an internal spline shape. The power input port 17 of this embodiment is of an internal hexagonal shape.

In the planetary reducer with the rolling bearing, the rolling bearing is arranged at the lower end of the shell, the outer ring of the rolling bearing is fixedly arranged on the object, and the inner ring of the rolling bearing is fixed on the output shaft section of the output connecting piece; the play of the speed reducing mechanism in the axial direction can be reduced, the radial rotation of the output end becomes smoother, the energy consumption loss is reduced, the operation noise is reduced, and the service life of the whole product is effectively prolonged; meanwhile, the planetary reduction mechanism comprises a primary reduction group and a secondary reduction group which are integrated in the shell, a central gear shaft of the secondary reduction group is meshed with a primary planetary gear of the primary reduction group, the whole structure is light and compact, and the running rotating speed is effectively reduced.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A planetary reducer with a rolling bearing is characterized by comprising: the planetary speed reducer comprises a shell (1) and a planetary speed reducing mechanism arranged in the shell (1), wherein an output connecting piece (3) with an output shaft section (2) is arranged at the lower end of the shell (1), and the output shaft section (2) is used for being connected with an external transmission shaft; the output connecting piece (3) is rotationally connected with an output planet carrier (4) of the planetary reduction mechanism; the shell (1) is provided with a rolling bearing (20) on one side of the output connecting piece (3), and the inner ring of the rolling bearing (20) is connected with the output shaft section (2).

2. A planetary reducer with rolling bearing according to claim 1, characterized in that said rolling bearing (20) is a ball bearing.

3. A planetary reducer with rolling bearing according to claim 1, wherein the planetary reduction mechanism includes a primary reduction group and a secondary reduction group connected to each other.

4. A planetary reducer with rolling bearing according to claim 3, characterized in that said primary reduction group comprises an input planet carrier (5), a plurality of primary planet gears (6) mounted on said input planet carrier (5) and a primary ring gear (7) mounted inside the upper end of said casing (1); the primary planet gear (6) is meshed with the primary gear ring (7).

5. A planetary reducer with rolling bearing according to claim 4, characterized in that said two-stage reduction group comprises said output planet carrier (4) and a plurality of two-stage planetary gears (8) mounted on said output planet carrier (4); the utility model discloses a planetary gear set, including casing (1), second grade planetary gear (8), second grade ring gear (9), second grade planetary gear (8) with second grade ring gear (9) meshing, sun gear axle (10) of output planet carrier (4) upper end with one-level planetary gear (6) meshing.

6. A planetary reducer with rolling bearing according to claim 5, characterized in that said secondary ring gear (9) is integral with said casing (1).

7. A planetary reducer with rolling bearing according to claim 5, characterized in that the primary planetary gear (6) is mounted on a first carrier shaft (11) of the input carrier (5), the secondary planetary gear (8) is mounted on a second carrier shaft (12) of the output carrier (4), a positioning end cap (13) is mounted on one side of the first carrier shaft (11), and the output connecting member (3) is mounted on one side of the second carrier shaft (12).

8. A planetary reducer with rolling bearing according to claim 7, characterized in that the side of the positioning end cap (13) close to the output planet carrier (4) is provided with an annular arc-shaped projection (14); one end of the output connecting piece (3) close to the inner side wall of the shell (1) is provided with an arc-shaped convex part (14) with the same structure.

9. A planetary reducer with rolling bearing according to claim 4, characterized in that the input shaft section (15) is arranged at the upper end of the input planet carrier (5), the input shaft section (15) is provided with a sealing end cover (16), and the end of the input shaft section (15) is provided with a power input port (17); the output shaft section (2) is provided with a power output port (18) connected with an external transmission shaft.

10. A planetary reducer with rolling bearing according to claim 1, characterized in that said rolling bearing (20) is a thrust bearing.