Planetary speed reducing mechanism of hub motor of commercial robot

Abstract

The utility model discloses a planetary reducing mechanism of a hub motor of a commercial robot, which comprises a casing, a rotating shaft arranged in the middle inside the casing, a rotor assembly and a stator assembly sequentially arranged on the outer side of the rotating shaft, a sun gear arranged in the middle of the rotating shaft, a planet carrier arranged at the upper end of the sun gear, and a planet gear arranged on one side of the sun gear. The other end, away from the sun gear, of the planet carrier is provided with a hub end cover connected with the machine shell. The motor has the advantages that the stator and the rotor drive the sun gear and the hub end cover provided with the inner gear ring, the power density and the installation technology of the motor are effectively optimized, cost is greatly saved, the planetary speed reduction mechanism is arranged in the punching sheet, and the internal space of the motor is effectively utilized.

Description

TECHNICAL FIELD

[0001] The utility model relates to wheel hub motor technical field, concretely is a kind of planetary reduction mechanism of commercial robot wheel hub motor. BACKGROUND

[0002] The wheel hub motor structure of existing industrial robot, when increasing gear box, it occupies larger volume, so that the thickness of wheel hub motor increases, occupies a large amount of whole machine space, and it is also more inconvenient when installing, production efficiency is lower, and product yield is also lower. SUMMARY

[0003] The utility model discloses a kind of planetary reduction mechanism of commercial robot wheel hub motor, to solve the problem presented in above background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of planetary reduction mechanism of commercial robot wheel hub motor, including shell, the middle of the shell inside is equipped with rotating shaft, rotating shaft outside is equipped with rotor assembly and stator assembly in sequence, the middle part of rotating shaft is equipped with sun gear, the upper end of sun gear is equipped with planet carrier, one side of sun gear is equipped with planetary gear, the other end of planet carrier away from sun gear is equipped with wheel hub end cover connected with the shell.

[0005] Further optimization, one end of the wheel hub end cover close to the planet carrier is equipped with inner gear ring.

[0006] Further optimization, step structure is provided on the wheel hub end cover, and the inner gear ring is interference fit, and coated with adhesive.

[0007] Further optimization, the inner gear ring is equipped with rotation-stopping groove.

[0008] Further optimization, the planetary gear and the planet carrier are installed through screw.

[0009] Further optimization, the planet carrier is composed of metal structure and injection molding structure, the plastic structure is connected with the wheel hub end cover through bearing, and the metal structure is connected with the rotating shaft.

[0010] Further optimization, the rotor assembly and the sun gear are connected through the rotating shaft interference fit.

[0011] Beneficial effects

[0012] The planetary reduction mechanism of commercial robot wheel hub motor provided by the utility model, the sun gear driven by the stator and rotor and the wheel hub end cover with inner gear ring are installed, effectively optimize motor power density and installation process, greatly save cost, the planetary reduction mechanism is arranged in the inner part of the punching sheet, effectively utilize the internal space of motor. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 This is a cross-sectional view of the overall structure of this utility model. Detailed Implementation

[0014] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0015] Example

[0016] like Figure 1 As shown, a planetary reduction mechanism for a hub motor of a commercial robot is characterized by: a housing 1, a rotating shaft 2 disposed in the middle inside the housing 1, a rotor assembly 3 and a stator assembly 4 disposed sequentially on the outer side of the rotating shaft 2, a sun gear 5 disposed in the middle of the rotating shaft 2, a planet carrier 6 disposed on the upper end of the sun gear 5, a planet gear 7 disposed on one side of the sun gear 5, and a hub end cap 8 connected to the housing 1 disposed at the other end of the planet carrier 6 away from the sun gear 5.

[0017] In this embodiment, the end of the hub end cap 8 near the planetary carrier 6 is provided with an internal gear ring 9.

[0018] The wheel hub end cap 8 has a stepped structure and is interference-fitted with the inner gear ring 9. It is also coated with adhesive. The inner gear ring 9 has an anti-rotation groove. The gear ring adopts an anti-rotation groove design, which uses the gear ring to cut the end cap step to achieve anti-rotation.

[0019] The planetary gears are mounted to the planetary carrier 6 with screws. The stator core is pre-assembled into a stator assembly by stamping. The planetary gears are mounted by pins riveted to the stamping and rotate using the principle of oil-impregnated bearings.

[0020] The planetary carrier 6 is composed of a metal structure and an injection-molded structure. The plastic structure is connected to the hub end cover 8 via a bearing, while the metal structure is connected to the rotating shaft 2 to prevent rotation.

[0021] The rotor assembly 3 and the sun gear 5 are connected by an interference fit through the shaft 2, and the shaft end is connected to the hub and planetary carrier through a bearing to ensure concentricity.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A planetary reduction mechanism for a commercial robot wheel hub motor, characterized by: The utility model provides a kind of motor, including shell (1), the rotation axis (2) is equipped in the inside middle of the shell (1), the rotation axis (2) outside is equipped with rotor assembly (3) and stator assembly (4) in proper order, the rotation axis (2) middle part is equipped with sun gear (5), the sun gear (5) upper end is equipped with planet carrier (6), the sun gear (5) one side is equipped with planetary gear (7), the planet carrier (6) is equipped with wheel hub end cover (8) being connected with the shell (1) away from the sun gear (5) another end, the wheel hub end cover (8) is equipped with inner gear ring (9) close to one end of the planet carrier (6), the wheel hub end cover (8) is provided with step structure, and with the inner gear ring (9) both interference fit, and coated with adhesive, the inner gear ring (9) is equipped with rotation-stop groove, the planetary gear and the planet carrier (6) are installed by screw, the planet carrier (6) is metal structure and injection molding structure composition, and the injection molding structure is connected with the wheel hub end cover (8) by bearing, the metal structure is connected with the rotation axis (2), the rotor assembly (3) and the sun gear (5) are connected by the rotation axis (2) interference fit.

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