阅读说明：本技术 一种速比差行星减速器的制造和减速比计算方法 (Manufacturing method of speed ratio difference planetary reducer and speed reduction ratio calculating method ) 是由 冯明东 于 2020-06-17 设计创作，主要内容包括：一种速比差行星减速器的制造和减速比计算方法。本发明属于减速器,尤其涉及大减速比和超大减速比的减速装置。本发明解决传统减速器减速比小、传动力小、体积大、重量大、易磨损、传动精度差,制造装配工艺要求高、成本高的问题。本发明通过前后两排不同速比的行星齿连接,通过不同的速比差来得到不同的减速比的方法。本发明主要应用于需要大减速比、高精度、高传动力的减速设备。(A manufacturing method of a speed ratio difference planetary speed reducer and a speed reduction ratio calculating method. The invention belongs to a speed reducer, and particularly relates to a speed reducer with a large speed reduction ratio and an ultra-large speed reduction ratio. The invention solves the problems of small reduction ratio, small transmission force, large volume, heavy weight, easy abrasion, poor transmission precision, high requirement on manufacturing and assembling processes and high cost of the traditional speed reducer. The invention relates to a method for obtaining different reduction ratios through different speed ratio differences by connecting front and rear rows of planet gears with different speed ratios. The invention is mainly applied to speed reduction equipment which needs large speed reduction ratio, high precision and high transmission force.)

1. A speed-difference planetary speed reducer is made up through connecting two rows of planetary gears with different speed ratios, and calculating the speed-difference between two rows of planetary gears.

2. The differential ratio planetary reduction gear according to claim 1, wherein: the front row sun gear and the rear row sun gear are connected to form an input end, the front row planet carrier and the rear row planet carrier are connected to form a follower, and the front row gear ring and the rear row gear ring are fixed and output.

3. The differential ratio planetary reduction gear according to claim 1, wherein: the front row sun gear and the rear row sun gear are connected to form an input end, the front row gear ring and the rear row gear ring are connected to form a follower, and the front row planet carrier and the rear row planet carrier are fixed and output.

4. The differential ratio planetary reduction gear according to claim 1, wherein: the front row planet carrier and the rear row planet carrier are connected to form an input end, the front row sun gear and the rear row sun gear are connected to form a follower, and the front row gear ring and the rear row gear ring are fixed and output.

5. The differential ratio planetary reduction gear according to claim 1, wherein: the front row planet carrier and the rear row planet carrier are connected to form an input end, the front row gear ring and the rear row gear ring are connected to form a follower, and the front row sun gear and the rear row sun gear are fixed and output.

6. The differential ratio planetary reduction gear according to claim 1, wherein: the front row of gear rings and the rear row of gear rings are connected to form an input end, the front row of sun gears and the rear row of sun gears are connected to form a follower, and the front row of planet carriers and the rear row of planet carriers are fixed one by one and output one.

7. The differential ratio planetary reduction gear according to claim 1, wherein: the front row of gear rings and the rear row of gear rings are connected to form an input end, the front row of planet carriers and the rear row of planet carriers are connected to form a follower, and the front row of sun gears and the rear row of sun gears are fixed one by one and output one.

8. The differential planetary reduction ratio of claim 1 calculated as: 1/((fixed row input member tooth number/fixed row follower tooth number-output row input member tooth number/output row follower tooth number) x (output row follower tooth number/output row output member tooth number)) to 1.

Technical Field

The invention belongs to a speed reducer, and particularly relates to a speed reducer with a large speed reduction ratio and an ultra-large speed reduction ratio.

Background

The current speed reducer is mainly divided into a conventional gear speed reducer, a planetary speed reducer, a gear worm speed reducer, a harmonic speed reducer and an RV cycloidal pin gear speed reducer. The conventional gear reducer and the planetary reducer have large transmission torsion but small reduction ratio, and the volume is increased after multi-stage transmission, the weight is increased, and the transmission precision is reduced. The gear worm reducer has large reduction ratio and large transmission torsion, but is easy to wear and has low transmission efficiency. The harmonic reducer has small volume, large transmission ratio, flexible teeth, small transmission torque and easy abrasion. The RV cycloidal pin wheel speed reducer has large transmission torque and large reduction ratio, but the requirements of manufacturing process and assembly process are very high. The high-precision harmonic speed reducer and the RV cycloidal pin wheel speed reducer are basically monopolized abroad, and the cost is high.

Disclosure of Invention

The invention adopts a parallel connection method of two rows of planetary gears with different speed ratios, and solves the defects of small reduction ratio, small transmission force, large volume, heavy weight, easy abrasion, poor transmission precision, high requirements on manufacturing and assembling processes and high cost of the traditional speed reducer.

The solution adopted by the invention is that two rows of planet gears with different speed ratios are connected to obtain different speed ratio differences to generate different speed reduction ratios.

Drawings

The invention is further illustrated with reference to the following figures and examples. FIG. 1 is a cross-sectional view of an embodiment of a sun input and a ring output. FIG. 2 is a cross-sectional view of an embodiment of the sun input and the planet carrier output. FIG. 3 is a cross-sectional view of an embodiment of the input ring gear output of the planet carrier. FIG. 4 is a cross-sectional view of an embodiment of a planet carrier input sun output. FIG. 5 is a cross-sectional view of an embodiment of a ring gear input to a carrier output. FIG. 6 is a cross-sectional view of an embodiment of a ring gear input to a sun gear output. In the figure:

1. the front row of the sun wheel is provided with a sun wheel,

2. the rear row of the sun wheel is provided with a sun wheel,

3. a planet carrier of the front row is arranged,

4. the planet carrier on the back row is provided with a planet carrier,

5. a front row of gear rings are arranged,

6. the gear ring of the back row is provided with a gear ring,

7. a front row of planet wheels is arranged,

8. and a rear row planet wheel.

Detailed Description

In the embodiment shown in fig. 1, a front row sun gear (1) and a rear row sun gear (2) are connected as an input end, a front row planet carrier (3) and a rear row planet carrier (4) are connected as a follower, and a front row gear ring (5) and a rear row gear ring (6) are fixed and output.

In the embodiment shown in fig. 2, the front row sun gear (1) and the rear row sun gear (2) are connected as an input end, the front row gear ring (5) and the rear row gear ring (6) are connected as a follower, and the front row planet carrier (3) and the rear row planet carrier (4) are fixed and output.

In the embodiment shown in fig. 3, the front row planet carrier (3) and the rear row planet carrier (4) are connected as an input end, the front row sun gear (1) and the rear row sun gear (2) are connected as a follower, and the front row ring gear (5) and the rear row ring gear (6) are fixed and output.

In the embodiment shown in fig. 4, the front row planet carrier (3) and the rear row planet carrier (4) are connected as an input end, the front row gear ring (5) and the rear row gear ring (6) are connected as a follower, and the front row sun gear (1) and the rear row sun gear (2) are fixed and output.

In the embodiment shown in fig. 5, the front row ring gear (5) and the rear row ring gear (6) are connected as input ends, the front row sun gear (1) and the rear row sun gear (2) are connected as followers, and the front row planet carrier (3) and the rear row planet carrier (4) are fixed and output.

In the embodiment shown in fig. 6, the front row ring gear (5) and the rear row ring gear (6) are connected as input ends, the front row planet carrier (3) and the rear row planet carrier (4) are connected as followers, and the front row sun gear (1) and the rear row sun gear (2) are fixed and output.

The speed reduction ratio calculation method comprises the following steps: 1/((fixed row input member tooth number/fixed row follower tooth number-output row input member tooth number/output row follower tooth number) x (output row follower tooth number/output row output member tooth number)) to 1.

In the embodiment of fig. 1: the front row of gear rings (5) are fixed, the rear row of gear rings (6) are output, and the calculation method comprises the following steps: 1/((1 tooth/3 tooth-2 tooth/4 tooth) x (4 tooth/6 tooth)) to 1.

The invention adopts two rows of planet gears with different speed ratios to generate different speed ratio differences to obtain different speed reduction ratios, when the speed ratio difference of the front row and the rear row is larger, the speed reduction ratio is smaller, and when the speed ratio difference of the front row and the rear row is smaller, the speed reduction ratio is larger. Reduction ratios ranging from a dozen to one to tens of thousands to one can be achieved. The speed reducer has the advantages of simple structure, small volume, capability of supporting super-large torque, super-wide speed reduction ratio, high transmission efficiency and low production and manufacturing difficulty because only two rows of planets are connected.