CN211918385U

CN211918385U - Brushless drive assembly

Info

Publication number: CN211918385U
Application number: CN202020360868.3U
Authority: CN
Inventors: 孙丰成; 唐伟鑫
Original assignee: Qingdao Auste Electric Drive Equipment Co ltd
Current assignee: Qingdao Auste Electric Drive Equipment Co ltd
Priority date: 2020-03-20
Filing date: 2020-03-20
Publication date: 2020-11-13
Anticipated expiration: 2030-03-20

Abstract

The utility model relates to the technical field of steering wheels, and discloses a brushless driving assembly, which comprises a reduction gearbox, a walking motor and walking wheels, wherein the reduction gearbox transmits the power of the walking motor to the walking wheels, and the walking motor is a brushless motor; the reduction gearbox comprises a box body and a box cover, and the box body and the box cover enclose a transmission cavity; a connecting shaft is arranged on the side of the box body, which is far away from the box cover, and the travelling wheels are rotatably arranged on the connecting shaft; a shaft hole is formed in the connecting shaft, the walking motor is fixed on the end face of the connecting shaft, and an output shaft of the walking motor penetrates through the shaft hole and extends into the transmission cavity; a transmission shaft is rotatably arranged in the transmission cavity and is parallel to the output shaft; the output shaft is in transmission connection with the transmission shaft through the transmission gear set, and the transmission shaft drives the traveling wheels to rotate. The box body is connected with the walking motor, the front end cover of the walking motor is saved, the box body has the bearing effect and the effect of the front end cover of the walking motor, the box body can bear larger bearing capacity, and meanwhile, the cost of the driving assembly is greatly reduced.

Description

Brushless drive assembly

Technical Field

The utility model relates to a steering wheel technical field especially indicates a brushless drive assembly.

Background

The driving assembly is used as a core component of the electric industrial vehicle, integrates key parts such as a traveling motor, a reduction gearbox, wheels, a brake and the like, and determines the power and the operating performance of the whole vehicle; at present, similar products in the market are limited by processing technology and design reasons, a driving assembly assembled by market-formed direct-current brush motors is generally adopted, the noise is high, the cost is high, and the carbon brushes need to be maintained regularly.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brushless drive assembly has solved the big problem of steering wheel noise among the prior art.

The technical scheme of the utility model is realized like this: a brushless driving assembly comprises a reduction gearbox, a walking motor and a walking wheel, wherein the reduction gearbox transmits the power of the walking motor to the walking wheel, and the walking motor is a brushless motor; the reduction gearbox comprises a box body and a box cover, and a transmission cavity is enclosed by the box body and the box cover; a connecting shaft is arranged on the side surface of the box body, which is far away from the box cover, and the travelling wheels are rotatably arranged on the connecting shaft; a shaft hole is formed in the connecting shaft, the walking motor is fixed on the end face of the connecting shaft, and an output shaft of the walking motor penetrates through the shaft hole and extends into the transmission cavity; a transmission shaft is rotatably arranged in the transmission cavity and is parallel to the output shaft; the output shaft is in transmission connection with the transmission shaft through a transmission gear set, and the transmission shaft drives the traveling wheels to rotate.

Preferably, a brake is arranged on the case cover, and the output shaft penetrates through the case cover and is fixedly connected with a friction disc of the brake.

Preferably, the transmission gear set includes a first bevel gear and a second bevel gear, the first bevel gear is fixed on the output shaft, the second bevel gear is fixed on the transmission shaft, and the first bevel gear and the second bevel gear are in mesh transmission.

As a preferable technical scheme, the walking wheel is fixed on the outer wall of the inner gear ring, a connecting sleeve is arranged at one end of the inner gear ring, which is far away from the box body, the connecting sleeve is rotatably connected with the outer wall of the connecting shaft through a bearing, and the inner gear ring is in transmission connection with the transmission shaft.

As a preferable technical scheme, the output end of the transmission shaft extends out of the transmission cavity and is fixedly provided with a straight gear, and the straight gear is in meshing transmission with the gear ring.

Preferably, the housing is provided with a connecting arm which is located at an upper end of the housing and extends toward the traveling wheel side.

The beneficial effects of the utility model reside in that: the brushless driving assembly is improved by combining the reduction gearbox and the walking motor, the box body is connected with the walking motor, the front end cover of the walking motor is saved, the box body plays a role in bearing and the front end cover of the walking motor, larger bearing capacity can be borne, and meanwhile the cost of the driving assembly is greatly reduced. The walking motor adopts a brushless motor, so that the noise of the driving assembly is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic diagram of the internal structure of the present invention.

In the figure, 1-a walking motor; 11-a stator-rotor assembly; 12-an output shaft; 13-motor housing; 2-travelling wheels; 3-a brake; 4-a reduction gearbox; 41-box cover; 42-a box body; 43-a connecting shaft; 44-a first bevel gear; 45-a drive shaft; 46-a second bevel gear; 48-a spur gear; 5-inner gear ring; 6-connecting sleeves; 7-bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and the descriptions of these embodiments are used to help understanding the present invention, but do not constitute a limitation of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A brushless drive assembly, as shown in figure 1 and figure 2, includes reducing gear box 4, walking motor 1 and walking wheel 2, and reducing gear box 4 transmits the power of walking motor 1 to walking wheel 2, and walking motor 1 is brushless motor, and frictional force reduces greatly when brushless motor operates, and the operation is smooth and easy, and the noise can hang down a lot of, can reduce drive assembly's whole noise, has increased drive assembly's life.

The reduction gearbox 4 comprises a box body 42 and a box cover 41, and the box body 42 and the box cover 41 enclose a transmission cavity; a connecting shaft 43 is arranged on the side surface of the box body 42 departing from the box cover 41, and the travelling wheel 2 is rotatably arranged on the connecting shaft 43; preferably, the walking wheel device also comprises an inner gear ring 5, the walking wheel 2 is fixed on the outer wall of the inner gear ring 5, one end of the inner gear ring 5 departing from the box body 42 is provided with a connecting sleeve 6, the connecting sleeve 6 is rotationally connected with the outer wall of the connecting shaft 43 through a bearing 7,

the traveling motor 1 includes a motor housing 13, a stator-rotor assembly 11, and an output shaft 12. The connecting shaft 43 is internally provided with a shaft hole, the motor shell 13 of the walking motor 1 is fixed on the end surface of the connecting shaft 43 through connecting pieces such as bolts, and the end cover of the walking motor 1 can be omitted, so that the manufacturing cost is reduced. The output shaft 12 of the walking motor 1 penetrates through the shaft hole and extends into the transmission cavity, and a bearing is arranged between the output shaft 12 and the inner wall of the shaft hole, so that the stability of the output shaft 12 is improved.

A transmission shaft 45 is rotatably arranged in the transmission cavity, and the transmission shaft 45 is parallel to the output shaft 12; the output shaft 12 is in transmission connection with the transmission shaft 45 through a transmission gear set, and the transmission shaft 45 drives the travelling wheels 2 to rotate.

Preferably, the transmission gear set comprises a first bevel gear 44 and a second bevel gear 46, the first bevel gear 44 is fixed on the output shaft 12, the second bevel gear 46 is fixed on the transmission shaft 45, and the first bevel gear 44 and the second bevel gear 46 are in mesh transmission. The first bevel gear 44 is smaller than the second bevel gear 46, and the small gear is provided with a large gear, so that the rotating speed is reduced, and the power performance is improved.

Furthermore, a brake 3 is arranged on the box cover 41, the output shaft 12 penetrates through the box cover 41 and is fixedly connected with a friction disc of the brake 3, and the brake 3 directly brakes the output shaft 12. The brake 3 can be a commercially available product, which is not modified and will not be described in detail.

The inner gear ring 5 is in transmission connection with the transmission shaft 45, preferably, the output end of the transmission shaft 45 extends out of the transmission cavity and is fixed with a straight gear 48, and the straight gear 48 is in meshing transmission with the gear ring 5.

The box body 42 is provided with a connecting arm which is located at the upper end of the box body 42 and extends toward the road wheels 2. The connecting arm is used for being connected with the frame, and the central plane of the connecting shaft of the connecting arm and the central plane of the travelling wheel 2 are located in the same vertical plane, so that the frame is supported stably.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a brushless drive assembly, includes reducing gear box, walking motor and walking wheel, the reducing gear box will the power transmission of walking motor gives the walking wheel, its characterized in that: the walking motor is a brushless motor; the reduction gearbox comprises a box body and a box cover, and a transmission cavity is enclosed by the box body and the box cover; a connecting shaft is arranged on the side surface of the box body, which is far away from the box cover, and the travelling wheels are rotatably arranged on the connecting shaft; a shaft hole is formed in the connecting shaft, the walking motor is fixed on the end face of the connecting shaft, and an output shaft of the walking motor penetrates through the shaft hole and extends into the transmission cavity; a transmission shaft is rotatably arranged in the transmission cavity and is parallel to the output shaft; the output shaft is in transmission connection with the transmission shaft through a transmission gear set, and the transmission shaft drives the traveling wheels to rotate.

2. A brushless drive assembly as recited in claim 1, wherein: the box cover is provided with a brake, and the output shaft penetrates through the box cover and is fixedly connected with a friction disc of the brake.

3. A brushless drive assembly as recited in claim 1, wherein: the transmission gear set comprises a first bevel gear and a second bevel gear, the first bevel gear is fixed on the output shaft, the second bevel gear is fixed on the transmission shaft, and the first bevel gear and the second bevel gear are in meshing transmission.

4. A brushless drive assembly as recited in claim 1, wherein: the walking wheel is fixed on the outer wall of the inner gear ring, a connecting sleeve is arranged at one end of the inner gear ring, which is far away from the box body, the connecting sleeve is rotatably connected with the outer wall of the connecting shaft through a bearing, and the inner gear ring is in transmission connection with the transmission shaft.

5. A brushless drive assembly as recited in claim 4, wherein: the output end of the transmission shaft extends out of the transmission cavity and is fixedly provided with a straight gear, and the straight gear is in meshing transmission with the gear ring.

6. A brushless drive assembly as claimed in any one of claims 1 to 5, wherein: the box is equipped with the linking arm, the linking arm is located the upper end of box just to walking wheel side extension.