Bilateral output electric drive wheel-side planetary reducer

Abstract

The invention relates to the technical field of crawler belt walking device speed reducers for crawler belt type special vehicles or crawler belt type armored vehicles. The bilateral output electrically-driven wheel-side planetary reducer comprises an output shaft of a motor, one end of the output shaft is connected with a left transmission plate, and the other end of the output shaft is connected with a right bearing pressing plate; the output shaft is sleeved with an input sun gear, and the input sun gear is meshed with an input planet gear. An input planet wheel shaft is arranged in the input planet wheel, and the input planet wheel is externally meshed with an input inner gear ring and output planet carrier composite part; the input planet wheel shaft is connected with an output planet wheel through an input planet carrier and output sun wheel composite part, and an output planet wheel shaft is arranged in the output planet wheel; an output inner gear ring is meshed with the output planet wheel, and a positioning shaft is connected to the output inner gear ring. An adjusting nut connected with the output shaft is arranged on one side of the left transmission plate, a reduction gearbox cover connected with the motor is arranged on the other side of the left transmission plate, and a bearing sealing cover is arranged between the left transmission plate and the reduction gearbox cover; the output planet wheel shaft is connected with the input inner gear ring and output planet carrier composite part, and the positioning shaft is connected with the output shaft. The planetary reducer has the advantages of being compact in structure, high in transmission efficiency, capable of achieving bilateral power output and the like, and the compactness and stability of the whole structure are achieved by adopting the two-stage planetary reduction mechanism and the input inner gear ring and the output planet carrier which are of an integrated structure; a hollow transmission structure is adopted, and the driving wheel and the speed reducer are in bilateral connection, so that bilateral output of power is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of track walking device reducer for tracked special vehicles or tracked armored vehicles. BACKGROUND

[0002] The drive of the track walking device for tracked special vehicles or tracked armored vehicles can be basically divided into three types, namely hydraulic motor drive, engine drive and motor drive. No matter what kind of driving form, the driving wheel needs to use a planetary reducer for speed reduction and torque increase. However, with the development of domestic "three-electricity" technology, electric drive is one of the important directions of high-end equipment development.

[0003] In the prior art, the coupling structure of the driving wheel and the reducer is single-sided coupling, which can be regarded as a cantilever structure from the structure, and is a typical structure with internal shear stress. SUMMARY

[0004] The purpose of the present application is to provide a double-sided output electric driving wheel edge planetary reducer which improves the shear stress and adopts double-sided coupling of the driving wheel and the reducer.

[0005] To solve the above technical problems, the present application provides a double-sided output electric driving wheel edge planetary reducer, comprising an output shaft of a motor, one end of the output shaft being connected with a left transmission plate and the other end being connected with a right bearing pressing plate; an input sun gear is sleeved on the output shaft, and an input planetary gear is meshed on the input sun gear; an input planetary gear shaft is arranged in the input planetary gear, and an input inner gear ring and an output planetary carrier composite are meshed outside the input planetary gear; the output planetary gear is connected with the output sun gear composite through the input planetary carrier and the output planetary gear shaft; an output inner gear ring is meshed on the output planetary gear, and a positioning shaft is connected on the output inner gear ring; an adjusting nut connected with the output shaft is arranged on one side of the left transmission plate, and a reduction box cover connected with the motor is arranged on the other side of the left transmission plate, and a bearing cover is arranged between the left transmission plate and the reduction box cover; the output planetary gear shaft is connected with the input inner gear ring and the output planetary carrier composite, and the positioning shaft is connected with the output shaft.

[0006] A bearing a is arranged between the right bearing pressing plate and the motor, and a ring groove is arranged on the inner side of the right bearing pressing plate, and an oil seal is arranged in the ring groove.

[0007] The bearing cover is connected with the reduction box cover through a cover bolt, and a bearing b is arranged between the input planetary gear and the input planetary gear shaft.

[0008] The reduction box cover is connected with the motor through a motor connecting bolt, and a bearing c is arranged between the reduction box cover and the positioning shaft.

[0009] The adjusting nut is in threaded connection with the output shaft, the positioning shaft is connected with the output shaft through spline, and the left transmission plate and the right bearing pressing plate are connected with the output shaft through spline.

[0010] The input inner gear ring and the output planet carrier composite and the input planet carrier and the output sun gear composite are integrally formed structures.

[0011] The input inner gear ring and the output planet carrier composite comprises the output planet carrier, and the input inner gear ring is arranged on the output planet carrier.

[0012] The input planet carrier and the output sun gear composite comprises the input planet carrier, and the output sun gear is arranged on the input planet carrier.

[0013] The input planet gear is in engagement with the input inner gear ring, the output planet gear shaft is in interference connection with the output planet carrier, and the input inner gear ring is in interference connection with the motor.

[0014] The output planet gear is in engagement with the output sun gear, and the input planet gear shaft is in interference connection with the input planet carrier.

[0015] Compared with the prior art, the application has the advantages of compact structure, high transmission efficiency, double-side power output, compactness and stability of the overall structure achieved by adopting the two-stage planetary reduction mechanism and the integrally formed input inner gear ring and output planet carrier, and double-side power output achieved by adopting the hollow transmission structure and double-side coupling of the driving wheel and the reducer.

[0016] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, the specific embodiments of the application can be implemented according to the content of the description, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0017] One or more embodiments are illustrated by way of example in the drawings that are for illustrative purposes only, and these illustrative examples do not constitute a limitation on the embodiments, elements having the same reference numerals in the drawings represent similar elements, unless otherwise specified, the drawings do not constitute a proportional limit.

[0018] Figure 1 is a structural schematic diagram of the application; Figure 2 is a principle diagram of the application; Figure 3 is a structural schematic diagram of the input inner gear ring and the output planet carrier composite of the application; Figure 4 is Figure 3 rear view of Figure 5is a structural schematic view of the input planetary carrier and output sun gear composite of the application Figure 6 is Figure 5 a rear view.

[0019] In the figure: 1-output shaft, 2-left transmission plate, 3-bearing cover, 4-positioning shaft, 5-output inner gear ring, 6-output planetary gear, 7-input inner gear ring and output planetary carrier composite, 71-output planetary carrier, 72-input inner gear ring, 8-input planetary carrier and output sun gear composite, 81-input planetary carrier, 82-output sun gear, 9-input planetary gear, 10-input sun gear, 11-right bearing pressing plate, 12-oil seal, 13-bearing a, 14-motor, 15-bearing b, 16-input planetary gear shaft, 17-motor connecting bolt, 18-output planetary gear shaft, 19-reduction box cover, 20-bearing c, 21-cover bolt, 22-adjusting nut. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art can understand that in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be realized even without these technical details and various changes and modifications based on the following embodiments. The division of the following embodiments is for the convenience of description and should not constitute any limitation on the specific implementation of the present application. The embodiments can be combined and referenced with each other without contradiction.

[0021] As Figures 1-6 shown, the present application includes a reduction box cover 19, an input reduction mechanism, an output reduction mechanism, etc., wherein the input reduction mechanism includes an input sun gear 10, an input planetary gear 9, an input inner gear ring 72, and an input planetary carrier 81, and the input inner gear ring 72 is fixed, the input sun gear 10 is connected with the motor output shaft 1 to receive power, and the input planetary carrier 81 rotates in the input reduction mechanism and outputs power; wherein the output reduction mechanism includes an output sun gear 82, an output planetary gear 6, an output inner gear ring 5, and an output planetary carrier 71, and the output planetary carrier 71 is fixed, the output sun gear 82 receives power input from the input sun gear 10 of the input reduction structure, and the output inner gear ring 5 rotates in the output reduction mechanism and outputs power to the positioning shaft 4.

[0022] Further, the positioning shaft 4 transmits power to the output shaft 1 through splines, and the output shaft 1 outputs power to the left transmission plate 2 and the right bearing pressing plate 11 at both ends of the wheel-side planetary reducer through hollow transmission, as Figure 2 shown.

[0023] Further, the input inner gear ring 72 of the input reduction mechanism is integrated with the output planet carrier 71 of the output reduction mechanism, and the input planet carrier 81 of the input reduction mechanism is integrated with the output sun gear 82 of the output reduction mechanism.

[0024] Further, the positioning shaft 4 in the hollow transmission structure is connected with the output shaft 1 through the spline, and the output shaft 1 is connected with the left transmission plate 2 and the right bearing pressing plate 11 through the spline.

[0025] Further, the input sun gear 10 is the output shaft of the motor 14, which is used to receive the power input of the motor 14, the input planet wheel shaft 16 is interference fitted on the input planet carrier 81, the bearing b15 is installed in the input planet wheel 9, and the bearing b15 is installed on the input planet wheel shaft 16; the output planet wheel shaft 18 is interference fitted on the output planet carrier 71, and the output planet wheel 6 is installed on the output planet wheel shaft 18.

[0026] Further, the input inner gear ring and the output planet carrier composite 7 are fixed by the interference connection of the outer ring part of the input inner gear ring 72 and the motor 14; the reduction box cover 19 is connected and fixed with the motor 14 through the motor connecting bolt 17; the bearing cover 3 is connected and fixed with the reduction box cover 19 through the cover bolt 21; the adjusting nut 22 is threadedly connected with the output shaft 1, and the axial position of the left transmission plate 2 and the right bearing pressing plate 11 is fixed.

[0027] Further, the bearing c20 is installed in the inside of the reduction box cover 19, and the left transmission plate 2 limits the axial position of the bearing c20; the bearing a13 is installed in the right inside position of the motor 14, the right bearing pressing plate 11 limits the axial position of the bearing a13, and the oil seal 12 is installed in the inside.

[0028] Those skilled in the art can understand that the above-mentioned embodiments can be variously changed in form and details in actual application without departing from the spirit and scope of the present application.

Claims

1. A dual-output electric drive wheel-side planetary reducer, characterized in that: The output shaft (1) of the motor (14) is connected to a left transmission plate (2) at one end and a right bearing pressure plate (11) at the other end. An input sun gear (10) is sleeved on the output shaft (1), and an input planet gear (9) meshes on the input sun gear (10). An input planet gear shaft (16) is provided inside the input planet gear (9), and an input internal gear ring and an output planet carrier composite (7) meshes on the input planet gear (9). The input planet gear shaft (16) is connected to an output planet gear (6) through the input planet carrier and the output sun gear composite (8). The star wheel (6) is provided with an output planetary gear shaft (18); the output planetary gear (6) is meshed with an output internal gear ring (5), and a positioning shaft (4) is connected to the output internal gear ring (5); one side of the left transmission plate (2) is provided with an adjusting nut (22) connected to the output shaft (1), and the other side is provided with a gearbox cover (19) connected to the motor (14). A bearing cover (3) is provided between the left transmission plate (2) and the gearbox cover (19); the output planetary gear shaft (18) is connected to the input internal gear ring and the output planetary carrier composite (7), and the positioning shaft (4) is connected to the output shaft (1).

2. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: A bearing a (13) is provided between the right bearing pressure plate (11) and the motor (14), and an annular groove is provided on the inner side of the right bearing pressure plate (11), and an oil seal (12) is installed in the annular groove.

3. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The bearing cover (3) is connected to the gearbox cover (19) by the cover bolt (21), and a bearing b (15) is provided between the input planetary gear (9) and the input planetary gear shaft (16).

4. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The gearbox cover (19) is connected to the motor (14) by the motor connecting bolt (17), and a bearing c (20) is provided between the gearbox cover (19) and the positioning shaft (4).

5. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The adjusting nut (22) is threadedly connected to the output shaft (1), the positioning shaft (4) is connected to the output shaft (1) via a spline, and the left transmission plate (2) and the right bearing pressure plate (11) are both connected to the output shaft (1) via a spline.

6. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The input internal gear ring and output planetary carrier composite (7) and the input planetary carrier and output sun gear composite (8) are both integrally formed structures.

7. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The input internal gear ring and output planetary carrier composite (7) includes an output planetary carrier (71) on which an input internal gear ring (72) is provided.

8. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The input planetary carrier and output sun gear composite (8) includes an input planetary carrier (81) and an output sun gear (82) is provided on the input planetary carrier (81).

9. The dual-output electric drive wheel-side planetary reducer as described in claim 7, characterized in that: The input planetary gear (9) meshes with the input internal gear ring (72), the output planetary gear shaft (18) is interference-fitted with the output planetary carrier (71), and the input internal gear ring (72) is interference-fitted with the motor (14).

10. The dual-output electric drive wheel-side planetary reducer as described in claim 1, characterized in that: The output planetary gear (6) meshes with the output sun gear (82), and the input planetary gear shaft (16) is interference-fitted with the input planetary carrier (81).

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