Planetary reducer special for robot joint

Abstract

The utility model discloses a planetary reducer special for robot joints, and relates to the technical field of reducers. Comprising an input end cover, a mounting disc, a shell, a coupler, an input device, a sun gear, a planet carrier, a planet gear, an inner gear ring, an output flange and a cover plate, the input end cover is fixed to the shell through the mounting disc, the coupler is arranged in the shell and connected with the input device, and the sun gear is arranged at the other end of the input device and meshed with the planet gear; the planetary gear is meshed with the inner gear rings and arranged in a planetary carrier, the output end of the planetary carrier is connected with an output flange, a cover plate is arranged outside the output flange, and the cover plate is fixed to the inner gear ring at one end. The special gear ratio is adopted, the speed ratio of primary planetary speed reduction is increased to 11, meanwhile, the planetary gear is made of PEEK engineering plastics, and the weight of the speed reducer is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a planetary speed reducer for robot joints. Background Technology

[0002] Traditional planetary reducers typically have a single-stage reduction ratio between 3:1 and 10:1. Furthermore, existing planetary reducers are usually made of metal, resulting in a significant weight that makes them unsuitable for use in robot joints, impacting efficiency and increasing production costs. Therefore, this invention designs a lightweight planetary reducer specifically for robot joints. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a planetary reducer for robot joints. It adopts a special gear ratio to increase the speed ratio of the first-stage planetary reducer to 11, and changes the planetary gear material to PEEK engineering plastic, which greatly reduces the weight of the reducer.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a planetary reducer for robot joints, comprising an input end cover, a mounting plate, a housing, a coupling, an input device, a sun gear, a planetary carrier, planetary gears, an internal gear ring, an output flange, and a cover plate. The input end cover is fixed to the housing via the mounting plate. A coupling is provided inside the housing and is connected to the input device. A sun gear is provided at the other end of the input device, meshing with the planetary gears. The planetary gears mesh with the internal gear ring. The planetary gears are located in the planetary carrier. The output end of the planetary carrier is connected to the output flange. A cover plate is provided outside the output flange and is fixed to one end of the internal gear ring.

[0005] Preferably, tapered ball bearings are provided at both ends of the internal gear ring, which increases the load of the reducer.

[0006] Preferably, the ratio of the rotational speed of the sun gear to the rotational speed of the output flange is 11:1.

[0007] Preferably, the input device is equipped with crossed roller bearings, which can better withstand the load and improve the stability and reliability of the reducer.

[0008] Preferably, the sun gear, planetary gear, and internal gear ring are all helical gears, which makes the operation smoother and the noise lower.

[0009] Preferably, the planetary gears are PEEK gears, which are lighter and greatly reduce the overall weight of the reducer.

[0010] The beneficial effects of this utility model are as follows: The structure of this utility model is reasonable, and a special gear ratio is adopted to increase the speed ratio of the first-stage planetary reducer to 11. At the same time, the planetary gear material is changed to PEEK engineering plastic, which greatly reduces the weight of the reducer. Attached Figure Description

[0011] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments;

[0012] Figure 1 This is an exploded view of the present invention;

[0013] Figure 2 This is an exploded view of the present invention from another orientation;

[0014] Figure 3 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0016] Reference Figure 1-3 The specific embodiment adopts the following technical solution: a special planetary reducer for robot joints, including an input end cover 1, a mounting plate 2, a housing 3, a coupling 4, an input device 5, a sun gear 6, a planetary carrier 7, planetary gears 8, an internal gear ring 9, an output flange 10, and a cover plate 11. The input end cover 1 is fixed to the housing 3 through the mounting plate 2. The housing 3 is provided with a coupling 4, which is connected to the input device 5. The other end of the input device 5 is provided with a sun gear 6, which meshes with the planetary gear 8. The planetary gear 8 meshes with the internal gear ring 9. The planetary gear 8 is disposed in the planetary carrier 7. The output end of the planetary carrier 7 is connected to the output flange 10. The output flange 10 is provided with a cover plate 11, which is fixed to one end of the internal gear ring 9.

[0017] It is worth noting that tapered ball bearings 12 are provided at both ends of the internal gear ring 9, which increases the load of the reducer.

[0018] It is worth noting that the speed ratio of the sun gear 6 to the output flange 10 is 11:1.

[0019] It is worth noting that the input device 5 is equipped with a crossed roller bearing 13, which can better bear the load and improve the stability and reliability of the reducer.

[0020] It is worth noting that the sun gear 6, planetary gear 8, and internal gear ring 9 all use helical gears, which makes the operation smoother and the noise lower.

[0021] In addition, the planetary gear 8 is made of PEEK gear, which is lighter and greatly reduces the overall weight of the reducer.

[0022] The working principle of this specific embodiment is as follows: Power is transmitted to the input device 5 through the input end cover 1 and the coupling 4. The input device 5 drives the sun gear 6 to rotate, and the sun gear 6 drives the planet gear 8 to rotate through meshing. The planet gear 8 rotates in the planet carrier 7 and meshes with the internal gear ring 9. The output end of the planet carrier 7 outputs the decelerated power through the output flange 10.

[0023] In this specific embodiment, tapered ball bearings 12 are provided at both ends of the internal gear ring 9, which can withstand greater axial and radial loads, improving the load capacity of the reducer. The speed ratio of the sun gear 6 to the output flange 10 is 11:1, achieving a high reduction ratio, suitable for applications requiring high torque output. Crossed roller bearings 13 are provided on the input device 5, which can better bear the load and improve the stability and reliability of the reducer. The sun gear 6, planetary gears 8, and internal gear ring 9 all adopt helical gear design, resulting in smoother operation and lower noise. The planetary gear 8 uses PEEK gears, which are lighter and greatly reduce the overall weight of the reducer, which is beneficial to improving the robot's motion flexibility.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A planetary reducer specifically for robot joints, characterized in that, The device includes an input end cover (1), a mounting plate (2), a housing (3), a coupling (4), an input device (5), a sun gear (6), a planetary carrier (7), a planetary gear (8), an internal gear ring (9), an output flange (10), and a cover plate (11). The input end cover (1) is fixed to the housing (3) via the mounting plate (2). The housing (3) contains a coupling (4), which is connected to the input device (5). The other end of the input device (5) contains a sun gear (6), which meshes with the planetary gear (8) and the internal gear ring (9). The planetary gear (8) is located in the planetary carrier (7). The output end of the planetary carrier (7) is connected to the output flange (10). The output flange (10) contains a cover plate (11), which is fixed to one end of the internal gear ring (9).

2. The planetary reducer for robot joints according to claim 1, characterized in that, The internal gear ring (9) is provided with tapered ball bearings (12) at both ends.

3. A planetary reducer for robot joints according to claim 1, characterized in that, The ratio of the rotational speed of the sun gear (6) to the rotational speed of the output flange (10) is 11:

1.

4. A planetary reducer for robot joints according to claim 1, characterized in that, The input device (5) is equipped with a cross roller bearing (13).

5. A planetary reducer for robot joints according to claim 1, characterized in that, The sun gear (6), planetary gear (8), and internal gear ring (9) all adopt helical teeth.

6. A planetary reducer for robot joints according to claim 1, characterized in that, The planetary gear (8) is a PEEK gear.

Images