阅读说明：本技术 双内齿大速比行星传动装置 (Double-internal-tooth large-speed-ratio planetary transmission device ) 是由 曹海军 王昆 吴宏登 罗方 高鉴英 刘年 于 2021-09-28 设计创作，主要内容包括：本发明公开了双内齿大速比行星传动装置,它由壳体和端盖以及安装在壳体、端盖内的太阳轮、太阳轮轴承、行星轮、行星轮轴承、行星轮轴、输入端内齿圈、输出端内齿圈、行星架、输出轴、过渡法兰和输出轴轴承构成；太阳轮驱动行星轮转动,行星轮分别驱动输入端内齿圈和输出端内齿圈；输入端内齿圈和输出端内齿圈存在齿数差,齿数差越小,两个内齿圈的转速差越小；当输入端内齿圈固定时,实现大速比。本发明利用两个内齿圈形成差动传动实现大的速比；只用一个行星架、单排太阳轮和单排行星轮,做到结构紧凑,并且承载力也能满足要求。(The invention discloses a double-internal-tooth large-speed-ratio planetary transmission device, which consists of a shell, an end cover, a sun gear bearing, a planet gear bearing, a planet gear shaft, an input end inner gear ring, an output end inner gear ring, a planet carrier, an output shaft, a transition flange and an output shaft bearing, wherein the sun gear, the sun gear bearing, the planet gear bearing, the planet gear shaft, the input end inner gear ring, the output end inner gear ring, the planet carrier, the output shaft, the transition flange and the output shaft bearing are arranged in the shell and the end cover; the sun wheel drives the planet wheel to rotate, and the planet wheel drives the inner gear ring of the input end and the inner gear ring of the output end respectively; the inner gear ring at the input end and the inner gear ring at the output end have a difference in the number of teeth, and the smaller the difference in the number of teeth, the smaller the difference in the rotational speed of the two inner gear rings; when the inner gear ring of the input end is fixed, a large speed ratio is realized. The invention uses two inner gear rings to form differential transmission to realize large speed ratio; only one planet carrier, a single-row sun gear and a single-row planet gear are used, the structure is compact, and the bearing capacity can meet the requirement.)

1. Two internal tooth high-speed ratio planetary transmission, characterized by: the device comprises a shell (1), an end cover (2), a sun gear (4), a sun gear bearing (3), a planet gear (8), a planet gear bearing (7), a planet gear shaft (6), an input end inner gear ring (9), an output end inner gear ring (10), a planet carrier (5), an output shaft (12), a transition flange (11) and an output shaft bearing (13), wherein the sun gear (4), the sun gear bearing (3), the planet gear (8), the planet gear bearing (7), the planet gear shaft (6), the input end inner gear ring (9), the output end inner gear ring (10) and the output shaft bearing (13) are arranged in the shell (1) and the end cover (2); the shell (1) and the end cover (2) are combined together through a joint surface, the planet wheels (8) are installed on a planet wheel shaft (6) through planet wheel bearings (7), the planet wheel shaft (6) is installed in the planet carrier (5), the planet carrier (5) comprises planet wheels (8) which are located between an input end inner gear ring (9) and an output end inner gear ring (10), the sun wheels (4) are located among the planet wheels (8), the sun wheels (4) are installed on the end cover (2) through sun wheel bearings (3), the input end inner gear ring (9) is fixed on the end cover (2), the output end inner gear ring (10) is installed on an output shaft (12) through a transition flange (11), and the output shaft (12) is installed in the shell (1) through an output shaft bearing (13).

2. The double-internal-tooth large-speed-ratio planetary transmission device according to claim 1, wherein: the input end inner gear ring (9) and the output end inner gear ring (10) have a gear number difference not less than 2.

3. The double-internal-tooth large-speed-ratio planetary transmission device according to claim 1, wherein: at least two planet wheels (8) are circumferentially distributed in the planet carrier (5) along the centre of rotation.

4. The double-internal-tooth large-speed-ratio planetary transmission device according to claim 1, wherein: the input end inner gear ring (9) and the output end inner gear ring (10) are coaxial, and the planet carrier (5) comprises a planet wheel (8) which floats between the input end inner gear ring (9) and the output end inner gear ring (10).

Technical Field

The invention belongs to the technical field of mechanical transmission, and particularly relates to a double-internal-tooth large-speed-ratio planetary transmission device.

Background

The planetary transmission device plays an important role in various industries due to the characteristics of compact structure, large bearing capacity, stable and efficient transmission, convenience in installation and long service life. With the continuous progress of economic development and science and technology, higher requirements are put forward on the miniaturization, large speed ratio and light weight of a mechanical transmission mechanism. At present, the single-stage speed ratio of the planetary transmission device in domestic market cannot be made very large due to structural limitation, the multi-stage planetary transmission can realize large speed ratio, and the characteristics of the planetary transmission device are lost due to the fact that the transmission stages are multiple and deviate from compact structure and miniaturization.

Disclosure of Invention

The purpose of the invention is: the double-internal-tooth large-speed-ratio planetary transmission device is provided, firstly, differential transmission is formed by utilizing two internal gear rings, and large speed ratio is realized; secondly, only one planet carrier, a single-row sun gear and a single-row planet gear are used, the structure is compact, and the bearing capacity can meet the requirement.

The technical solution of the invention is as follows: the double-internal-tooth large-speed-ratio planetary transmission device comprises a shell, an end cover, a sun gear bearing, a planet gear bearing, a planet gear shaft, an input end inner gear ring, an output end inner gear ring, a planet carrier, an output shaft, a transition flange and an output shaft bearing, wherein the sun gear, the sun gear bearing, the planet gear bearing, the planet gear shaft, the input end inner gear ring, the output end inner gear ring, the planet carrier, the output shaft, the transition flange and the output shaft bearing are arranged in the shell; the shell and the end cover are combined together through a joint surface, the planet wheels are arranged on a planet wheel shaft through planet wheel bearings, the planet wheel shaft is arranged in a planet carrier, the sun wheel is positioned among the planet wheels, the sun wheel is arranged on the end cover through the sun wheel bearings, an inner gear ring at the input end is fixed on the end cover, an inner gear ring at the output end is arranged on an output shaft through a transition flange, and the output shaft is arranged in the shell through an output shaft bearing.

Furthermore, the input end ring gear and the output end ring gear have a difference of the number of teeth not less than 2.

Furthermore, at least two planet wheels are distributed in the planet carrier along the rotation center in a circle.

Furthermore, the inner gear ring at the input end and the inner gear ring at the output end are coaxial, and the planet carrier comprises a planet wheel floating between the inner gear ring at the input end and the inner gear ring at the output end.

When the solar energy water heater works, the sun wheel drives the planet wheel to rotate, and the planet wheel drives the inner gear ring of the input end and the inner gear ring of the output end respectively; because the inner gear ring at the input end and the inner gear ring at the output end have the difference of the number of teeth, the inner gear ring at the input end and the inner gear ring at the output end form the difference of the rotating speed; the smaller the difference in the number of teeth, the smaller the difference in the rotational speed; when the inner gear ring at the input end is fixed, a large speed ratio is realized according to the differential transmission characteristic of the gear.

The invention achieves the following effects according to the technical solution: firstly, the transmission device is in planetary differential gear transmission, and the planet carrier is a floating part, so that the meshing precision is improved; the differential transmission of only one planet carrier can realize the speed ratio output of the common multi-stage planetary transmission, and the use requirement of the market on large speed ratio is met; and thirdly, differential transmission is realized by only using one planet carrier, so that the structure is compact and the bearing capacity is large.

Drawings

FIG. 1 is a schematic structural view of the present invention;

in the figure: 1. the planetary gear type planetary gear set comprises a shell, 2 parts of an end cover, 3 parts of a sun gear bearing, 4 parts of a sun gear, 5 parts of a planet carrier, 6 parts of a planet gear shaft, 7 parts of a planet gear bearing, 8 parts of a planet gear, 9 parts of an inner gear ring at an input end, 10 parts of an inner gear ring at an output end, 11 parts of a transition flange, 12 parts of an output shaft and 13 parts of an output shaft bearing.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1, the double-internal-tooth large-speed-ratio planetary transmission device is composed of a shell 1, an end cover 2, a sun gear 4, a sun gear bearing 3, a planet gear 8, a planet gear bearing 7, a planet gear shaft 6, an input end inner gear ring 9, an output end inner gear ring 10, a planet carrier 5, an output shaft 12, a transition flange 11 and an output shaft bearing 13, wherein the sun gear 4, the sun gear bearing 3, the planet gear 8, the planet gear bearing 7, the planet gear shaft 6, the input end inner gear ring 9, the output end inner gear ring 10, the planet carrier 5, the output shaft 12, the transition flange 11 and the output shaft bearing 13 are arranged in the shell 1 and the end cover 2; the shell 1 and the end cover 2 are combined together through a joint surface, the planet wheels 8 are arranged on a planet wheel shaft 6 through planet wheel bearings 7, the planet wheel shaft 6 is arranged in a planet carrier 5, the planet carrier 5 comprises planet wheels 8 positioned between an input end inner gear ring 9 and an output end inner gear ring 10, the sun wheels 4 are positioned among a plurality of planet wheels 8, the sun wheels 4 are arranged on the end cover 2 through sun wheel bearings 3, the input end inner gear ring 9 is fixed on the end cover 2, the output end inner gear ring 10 is arranged on an output shaft 12 through a transition flange 11, and the output shaft 12 is arranged in the shell 1 through an output shaft bearing 13.

Further, the input end ring gear 9 and the output end ring gear 10 have a difference in the number of teeth of not less than 2.

Furthermore, at least two planet wheels 8 are circumferentially distributed in the planet carrier 5 along the centre of rotation.

Furthermore, the input end ring gear 9 and the output end ring gear 10 are coaxial, and the planet carrier 5 comprises planet wheels 8 floating between the input end ring gear 9 and the output end ring gear 10.

When the device works, the sun wheel 4 drives the planet wheel 8 to rotate, and the planet wheel 8 drives the inner gear ring 9 at the input end and the inner gear ring 10 at the output end respectively; because the input end inner gear ring 9 and the output end inner gear ring 10 have a difference in the number of teeth, the input end inner gear ring 9 and the output end inner gear ring 10 form a difference in rotation speed; the smaller the difference of the tooth numbers of the input end inner gear ring 9 and the output end inner gear ring 10 is, the smaller the difference of the rotating speeds of the input end inner gear ring 9 and the output end inner gear ring 10 is; when the inner gear ring at the input end is fixed, a large speed ratio is realized according to the differential transmission characteristic of the gear.