阅读说明：本技术 减速机 (Speed reducer ) 是由 肖祖荣 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种结构简单、生产工艺简单、生产成本低、体积小、传动范围大、易于机电一体化的减速机,它是两个太阳轮共用一个或多个行星轮而组成的行星轮组装置,并且两个太阳轮安装在同一轴心线上,两个太阳轮分别固定连接相应的齿轮,再通过相应的齿轮啮合,使两个太阳轮在输入轴转动的时候,产生不同转数不同方向的转动,带动共用的行星轮和行星臂公转,再通过行星臂带动输出轴输出相应的转速。本发明主要用于各种功率、传动比范围较大的机械传动。(The invention discloses a speed reducer which has simple structure, simple production process, low production cost, small volume, large transmission range and easy electromechanical integration, and is a planetary wheel set device which is formed by sharing one or more planetary wheels by two sun wheels, wherein the two sun wheels are arranged on the same axis, the two sun wheels are respectively and fixedly connected with corresponding gears, and are meshed by the corresponding gears, so that the two sun wheels rotate at different revolutions in different directions when an input shaft rotates, the common planetary wheels and a planetary arm are driven to revolve, and an output shaft is driven by the planetary arm to output corresponding rotating speed. The invention is mainly used for mechanical transmission with various powers and large transmission ratio range.)

1. A speed reducer is a planetary gear set device which is formed by sharing one or more planet gears with two sun gears, wherein the two sun gears are arranged on the same axis, and are respectively and fixedly connected with corresponding gears, and then are meshed through the corresponding gears, when an input shaft drives the corresponding gears to rotate, the two sun gears rotate in different directions with different revolutions.

2. A speed reducer is characterized in that two sun wheels rotate in different directions at different revolutions to drive a common planet wheel and a common planet arm to revolve, and the planet arm drives an output shaft to output corresponding revolution speed.

Technical Field

The present invention belongs to a mechanical speed reducing transmission device.

Background

At present, in the known speed reducer, the cylindrical gear speed reducer has a small transmission ratio range and a large volume, while the needle thread balance wheel speed reducer has a large volume and a small power, and the worm gear speed reducer has a large volume and is easy to wear.

Disclosure of Invention

In order to overcome the defects of small transmission ratio range, large volume and no benefit to electromechanical integration of the existing speed reducer, the invention provides a speed reducer which adopts two planetary gear sets sharing a planetary gear, and the different rotating speeds of two coaxial positive and negative sun gears drive the common planetary gear and a planetary arm to revolve for mechanical transmission.

In order to solve the technical problems, the invention adopts the technical scheme that: two sun gears in the two planetary gear sets are arranged on the same axis, so that the two sun gears share one or more planetary gears. The two sun gears rotate in a positive-negative mode on the same axis to serve as input sun gears, the positive sun gear serves as a positive sun gear, the negative sun gear serves as a negative sun gear, the cylindrical gear fixedly connected with the negative sun gear serves as a negative gear, the cylindrical gear fixedly connected with the positive sun gear serves as a spur gear, the positive sun gear, the negative sun gear, the positive gear and the negative gear are all on the same axis, the shaft of the negative sun gear connected with the negative gear serves as a negative shaft, and the negative shaft is connected with the negative sun gear and the negative gear at two ends through center holes of the positive sun gear and the spur gear. And the planet wheel shared by the two sun wheels is used as an output planet wheel. The planet arm on the output planet wheel is used as an output end, and the shaft which is coaxial with the sun wheel and is fixedly connected with the planet arm is used as an output shaft. The cylindrical gear engaged with the counter gear serves as an input gear, which is an input end. The cylindrical gear meshed with the spur gear serves as a positive driven input gear, and the cylindrical gear coaxially and fixedly connected with the positive driven input gear and meshed with the input gear serves as a positive input gear. The input gear drives the reverse gear to rotate reversely, and simultaneously drives the positive input gear and the positive driven gear to rotate reversely, the positive driven gear drives the spur gear to rotate positively, the spur gear is fixedly connected with the positive sun gear, and the reverse gear is fixedly connected with the reverse sun gear, so that the two sun gears rotate positively and reversely, when the rotating speeds of the two sun gears are different, the common output planetary gear and the planetary arm are driven to revolve around the axis line of the sun gear, and the planetary arm drives the output shaft to output corresponding rotating speeds.

The invention has the beneficial effects that: the structure is simple and compact, the volume is small, the power is large, the transmission ratio range is large, the production process is simple, the production cost is low, and the electromechanical integration is easier.

Description of the drawings.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic diagram of the operation of the present invention.

In the figure 1, an input gear 2, a reverse gear 3, a reverse sun gear 4, a positive input gear 5, a positive driven input gear 6, a spur gear 7, a positive sun gear 8, an output planet gear 9, a reverse shaft 10, a planet arm 11, a base 12 and an output shaft.

Provided is an implementation mode.

In fig. 1, a positive sun gear 7 and a negative sun gear 3 are mounted on the same axis, and two sun gears share one or more output planet gears 8, the output planet gears 8 are mounted on a planet arm 10, the planet arm 10 is vertically and fixedly connected to an output shaft 12, a spur gear 6 and the positive sun gear 7 are fixedly connected on the same axis, the spur gear 6 is meshed with a positive driven input gear 5, the positive driven input gear 5 and a positive input gear 4 are fixedly connected on the same axis, the positive input gear 4 is meshed with an input gear 1, a reverse shaft 9 fixedly connects the negative sun gear 3 and a reverse gear 2 on the same axis through central holes of the positive sun gear 7 and the spur gear 6, and the reverse gear 2 is meshed with the input gear 1. When the revolution of the counter sun gear 3 is the same as that of the positive sun gear 7 and the revolution of the positive sun gear 7 is opposite in direction, the output planet gear 8 only rotates on the planet arm 10 and cannot drive the planet arm 10 to revolve around the axis of the sun gear, and therefore the output shaft 12 does not rotate. When the number of revolutions of the reverse sun gear 3 is larger than that of the positive sun gear 7, and the direction is opposite, the reverse sun gear 3 rotates for more than the number of revolutions of the positive sun gear 7, the reverse sun gear 3 rotates for more than the number of revolutions, the output planet gear 8 is driven to rotate, the positive sun gear 7 is fixed, the output planet gear 8 rotates, the planet arm 10 is driven to revolve around the sun gear when the output planet gear 8 rotates, and the planet arm 10 drives the output shaft 12 to output corresponding rotating speed. The same principle applies when the positive sun gear 7 rotates more than the negative sun gear 3. When the input gear 1 rotates to drive the counter gear 2 to rotate reversely, the counter gear 2 drives the counter sun gear 3 to rotate reversely together. Meanwhile, the input gear 1 can drive the positive input gear 4 and the positive driven input gear 5 to rotate reversely, the positive driven input gear 5 can drive the spur gear 6 to rotate positively, and the spur gear 6 can drive the positive sun gear 7 to rotate positively. The rotation directions of the positive sun wheel 7 and the negative sun wheel 3 are opposite, the rotation speed of the negative sun wheel 3 is determined by the setting of the input gear 1 and the negative sun wheel 2, the rotation speed of the positive sun wheel 7 is determined by the setting of the input gear 1, the positive input gear 4, the negative input gear 5 and the spur gear 6, so that the negative sun wheel 3 and the positive sun wheel 7 can set different rotation speeds according to different requirements, and the directions are opposite, so that the output planet wheel 8 and the planet arm 10 can be driven to revolve around the sun wheel, the planet arm 10 drives the output shaft 12 to rotate, and the output shaft 12 can obtain corresponding output rotation speed.