High-strength compact wheel type power structure for robot

Abstract

The high-strength compact type wheel type power structure comprises a hub, a motor, a planetary reduction gearbox, an aluminum alloy structural part, a close-fitting ring, a lining and a metal insert, the aluminum alloy structural part is in a long cylinder shape, and a check ring is arranged in the middle of the outer wall of the aluminum alloy structural part in the circumferential direction; the aluminum alloy structural part is arranged outside the planetary reduction gearbox and the motor in a sleeving mode, the planetary reduction gearbox and the motor are connected with each other, the planetary reduction gearbox extends into the hub, an output transmission shaft of the planetary reduction gearbox penetrates through the hub to be connected with the metal insert, and the close-fitting ring is arranged at the end, where the planetary reduction gearbox is located, of the aluminum alloy structural part in a close-fitting mode. The lining is arranged outside the close-fitting ring in a sleeved mode, and a plurality of oil grooves are formed in the outer wall of the close-fitting ring. The wheel type power set is light in weight, high in strength, compact and high in cost performance, and is particularly suitable for robots which work under extremely severe working conditions and meet the requirements for light weight and compactness.

Description

Technical Field

[0001] This utility model belongs to the field of robot power device technology, specifically relating to a high-strength, compact wheeled power structure for robots. Background Technology

[0002] Currently, planetary gearboxes on the market have relatively small output shaft diameters, which cannot directly meet the high-intensity working requirements of special robots. The gearbox housing of planetary gearboxes is relatively long, taking up a lot of space inside the machine, which is not conducive to the installation of other internal equipment and the compact design of robots with lightweight requirements. Redesigning a planetary gearbox with a thick shaft is too costly, and a thick shaft also means that larger bearings are needed for support, which will change the gearbox structure and add more weight. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a high-strength, compact wheeled power structure for robots to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A high-strength, compact wheeled power structure for robots is provided, characterized by comprising a wheel hub, a motor, a planetary gearbox, an aluminum alloy structural component, a fastening ring, a bushing, and a metal insert. The aluminum alloy structural component is an elongated cylindrical shape, with a retaining ring circumferentially arranged in the middle of its outer wall. The aluminum alloy structural component is sleeved around the interconnected planetary gearbox and the motor. The planetary gearbox extends into the wheel hub, and its output drive shaft passes through the wheel hub and connects to the metal insert. The fastening ring is tightly fitted onto the end of the aluminum alloy structural component where the planetary gearbox is located. The bushing is sleeved around the fastening ring, and the outer wall of the fastening ring has several oil grooves.

[0006] In the high-strength compact wheeled power structure for robots described above, a collet is fitted at the connection between the output drive shaft of the planetary gearbox and the metal insert, and a pressure plate for pressing the collet is tightly fitted on the outer wall of the metal insert.

[0007] The high-strength, compact wheeled power structure for robots described herein, wherein the tight-fitting ring is a POM ring.

[0008] The high-strength, compact wheeled power structure for robots described herein, wherein the bushing is a graphite bushing.

[0009] The high-strength, compact wheeled power structure for robots described herein includes an outer rim cast with polyurethane.

[0010] The beneficial effects of this utility model's technical solution are:

[0011] This invention provides a lightweight, high-strength, compact, and cost-effective wheeled power system for robots, which is especially suitable for robots that work in extremely harsh conditions and require lightweight and compact designs. Attached Figure Description

[0012] To further illustrate the above-mentioned objectives, structural features, and effects of this utility model, the following will describe this utility model in detail with reference to the accompanying drawings.

[0013] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention;

[0014] Figure 2 for Figure 1 Sectional view along AA;

[0015] In the diagram: 1. Gearbox; 2. Motor; 3. Planetary gearbox; 4. Aluminum alloy structural component; 5. Fitting ring; 6. Bushing; 7. Metal insert; 8. Retaining ring; 9. Oil groove; 10. Collet; 11. Pressure plate; 12. Polyurethane. Detailed Implementation

[0016] The terms “utility model” and “this utility model” used in this specification are intended to broadly refer to all subject matter of this specification and any of the following patent claims. Statements containing these terms should not be construed as limiting the subject matter described herein or limiting the meaning or scope of any of the following patent claims. Furthermore, this specification does not attempt to describe or limit the subject matter covered by any claim of any particular component, paragraph, statement, or drawing of this application. The subject matter should be understood with reference to the entire specification, all drawings, and any of the following claims. This utility model may have other embodiments and be practiced or implemented in other ways. Moreover, it should be understood that the wording and terminology used herein are for illustrative purposes and should not be considered limiting.

[0017] The use of the terms "comprising," "having," and "including," and variations thereof, herein means to include the items listed herein, their equivalents, and additional items. While reference may be made in the description of the drawings to directions such as above, below, upward, downward, backward, bottom, top, front, rear, etc., for convenience, reference is made relative to the drawings. These directions are not intended to literally accept or limit the invention in any form. Furthermore, terms such as "first," "second," "third," etc., are used herein for illustrative purposes and are not intended to indicate or imply importance or significance.

[0018] See Figure 1 , Figure 2As shown, the high-strength, compact wheeled power structure for robots of this utility model includes a wheel hub 1, a motor 2, a planetary gearbox 3, an aluminum alloy structural component 4, a fastening ring 5, a bushing 6, and a metal insert 7. The aluminum alloy structural component 4 is an elongated cylindrical shape, and a retaining ring 8 is circumferentially arranged in the middle of its outer wall. The aluminum alloy structural component 4 is fitted around the planetary gearbox 3 and the motor 2, which are connected to each other. The planetary gearbox 3 extends into the wheel hub 1, and the output drive shaft of the planetary gearbox 3 passes through the wheel hub 1 and connects to the metal insert 7. The fastening ring 5 is tightly fitted to the end of the aluminum alloy structural component 4 where the planetary gearbox 3 is located, and the bushing 6 is fitted around the fastening ring 5 to reduce friction during rotation.

[0019] The outer wall of the tight-fitting ring 5 is provided with several oil grooves 9, preferably three oil grooves 9 distributed radially, for storing a certain amount of lubricating grease.

[0020] A collet 10 is fitted at the connection between the output drive shaft of the planetary gearbox 3 and the metal insert 7. The collet 10 is an ER11 collet, and the metal insert 7 is made of copper. A pressure plate 11 is tightly fitted on its outer wall. The collet 10 is pressed by the pressure plate 11 and the M4 screw to fix the wheel to the drive output shaft.

[0021] Motor 2 is a 370 motor, and planetary gearbox 3 and 370 motor are connected to each other by aluminum alloy structural parts 4 and screws.

[0022] The tight-fitting ring 5 is a POM ring, which is characterized by high hardness, light weight, high rigidity, and high wear resistance. The bushing 6 is a graphite bushing, which is resistant to high temperature and corrosion, has high strength, and good toughness. The aluminum alloy structural component 4 is made of aluminum alloy, which facilitates weight reduction. The wheel hub 1 is 3D printed, and polyurethane 12 is fixed to the wheel hub 1 by casting to form a rubber-coated wheel. The 3D printed wheel hub 1 can meet the special requirements of wheel diameter.

[0023] When the planetary gearbox 3 drives the drive shaft to rotate, the hub 1 rotates on the aluminum alloy structural component 4 that is fixedly connected to the planetary gearbox 3 and the motor 2, ultimately forming a high-strength, compact wheeled power structure.

[0024] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-strength compact wheeled power structure for a robot, characterized by, The device includes a gearbox, a motor, a planetary gearbox, an aluminum alloy structural component, a fastening ring, a bushing, and a metal insert. The aluminum alloy structural component is a long cylindrical shape, and a retaining ring is circumferentially arranged in the middle of its outer wall. The aluminum alloy structural component is sleeved on the planetary gearbox and the motor, which are connected to each other. The planetary gearbox extends into the gearbox, and the output drive shaft of the planetary gearbox passes through the gearbox and connects to the metal insert. The fastening ring is tightly fitted on the end of the aluminum alloy structural component where the planetary gearbox is located. The bushing is sleeved on the outside of the fastening ring, and the outer wall of the fastening ring is provided with several oil grooves.

2. The high strength compact wheeled power structure for a robot of claim 1, wherein, A collet is fitted at the connection between the output drive shaft of the planetary gearbox and the metal insert, and a pressure plate for pressing the collet is tightly fitted on the outer wall of the metal insert.

3. The high strength compact wheeled power structure for a robot of claim 1, wherein, The tight-fitting ring is a POM ring.

4. The high strength compact wheeled power structure for a robot of claim 1, wherein, The bushing is a graphite bushing.

5. The high strength compact wheeled power structure for a robot of claim 1, wherein, The outer rim of the wheel is cast with polyurethane.

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