Double-sided output electric driving wheel edge planetary reducer

Abstract

This invention relates to the technical field of reducers for tracked special vehicles or tracked armored vehicles. The invention discloses a double-sided output electric drive wheel-side planetary reducer, comprising an output shaft of a motor, one end of which is connected to a left transmission plate, and the other end to a right bearing pressure plate; an input sun gear is sleeved on the output shaft, and input planet gears mesh on the input sun gear; an input planet gear shaft is provided inside the input planet gears, and an input internal gear ring and an output planet carrier composite are meshed outside the input planet gears; the input planet gear shaft is connected to the output planet gears via the input planet carrier and the output sun gear composite, and an output planet gear shaft is provided inside the output planet gears; an output internal gear ring meshes on the output planet gears, and a positioning shaft is connected to the output internal gear ring; one side of the left transmission plate has an adjusting nut connected to the output shaft, and the other side has a gearbox cover connected to the motor; a bearing cover is provided between the left transmission plate and the gearbox cover; the output planet gear shaft is connected to the input internal gear ring and the output planet carrier composite, and the positioning shaft is connected to the output shaft. This invention has the advantages of compact structure, high transmission efficiency, and dual-sided power output. By adopting a two-stage planetary reduction mechanism and an integrated input internal gear ring and output planetary carrier, the overall structure is compact and stable. By adopting a hollow transmission structure and using a dual-sided connection between the drive wheel and the reducer, dual-sided power output is achieved.

Description

Technical Field

[0001] This invention relates to the technical field of tracked special vehicles or tracked armored vehicles with tracked running gear reducers. Background Technology

[0002] Tracked special vehicles or tracked armored vehicles can be basically divided into three categories: hydraulic motor drive, engine drive, and electric motor drive. Regardless of the type of drive, the drive wheels need to use planetary reducers to reduce speed and increase torque. However, with the development of "three-electric" technology in China, electrification is one of the important directions for the development of high-end equipment.

[0003] In the existing technology, the connection structure between the drive wheel and the reducer is a single-sided connection, which can be regarded as a cantilever structure, and is a typical structure with internal shear stress. Summary of the Invention

[0004] The purpose of this invention is to provide a double-sided output electric drive wheel-side planetary reducer, which improves shear stress and the drive wheel and reducer are connected by a double-sided connection.

[0005] To solve the above-mentioned technical problems, the present invention provides a double-sided output electric drive wheel-side planetary reducer, including an output shaft, one end of which is connected to a left transmission plate, and the other end of which is connected to a right bearing pressure plate; an input sun gear is sleeved on the output shaft, and an input planet gear meshes on the input sun gear; an input planet gear shaft is provided inside the input planet gear, and an input internal gear ring and an output planet carrier composite are meshed outside the input planet gear; the input planet gear shaft is connected to the output planet gear via the input planet carrier and the output sun gear composite, and an output planet gear shaft is provided inside the output planet gear; an output internal gear ring meshes on the output planet gear, and a positioning shaft is connected to the output internal gear ring; one side of the left transmission plate is provided with an adjusting nut connected to the output shaft, and the other side is provided with a gearbox cover connected to the motor, and a bearing cover is provided between the left transmission plate and the gearbox cover; the output planet gear shaft is connected to the input internal gear ring and the output planet carrier composite, and the positioning shaft is connected to the output shaft.

[0006] A bearing a is provided between the right bearing pressure plate and the motor, and an annular groove is provided on the inner side of the right bearing pressure plate, in which an oil seal is installed.

[0007] The bearing cover is connected to the gearbox cover by cover bolts, and a bearing b is provided between the input planetary gear and the input planetary gear shaft.

[0008] The gearbox cover is connected to the motor via motor connecting bolts, and a bearing c is provided between the gearbox cover and the positioning shaft.

[0009] The adjusting nut is threaded to the output shaft, the positioning shaft is connected to the output shaft via a spline, and both the left transmission plate and the right bearing pressure plate are connected to the output shaft via splines.

[0010] The input internal gear ring and output planetary carrier composite and the input planetary carrier and output sun gear composite are both integrally formed structures.

[0011] The composite component of the input internal gear ring and the output planetary carrier includes an output planetary carrier, on which the input internal gear ring is provided.

[0012] The input planetary carrier and output sun gear composite includes an input planetary carrier, on which an output sun gear is mounted.

[0013] The input planetary gear meshes with the input internal gear ring, the output planetary gear shaft is interference-fitted with the output planetary carrier, and the input internal gear ring is interference-fitted with the motor.

[0014] The output planetary gear meshes with the output sun gear, and the input planetary gear shaft is interference-fitted with the input planetary carrier.

[0015] Compared with the prior art, this invention has the advantages of compact structure, high transmission efficiency, and dual-sided power output. By adopting a two-stage planetary reduction mechanism and an integrated input internal gear ring and output planetary carrier, the overall structure is compact and stable. By adopting a hollow transmission structure and a dual-sided connection between the drive wheel and the reducer, dual-sided power output is achieved.

[0016] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0017] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the composite component of the input internal gear ring and the output planetary carrier of the present invention; Figure 4 yes Figure 3 Rear view; Figure 5This is a schematic diagram of the structure of the input planetary carrier and output sun gear composite component of the present invention. Figure 6 yes Figure 5 Rear view.

[0019] In the diagram: 1-Output shaft, 2-Left transmission plate, 3-Bearing cover, 4-Positioning shaft, 5-Output internal gear ring, 6-Output planetary gear, 7-Input internal gear ring and output planetary carrier composite, 71-Output planetary carrier, 72-Input internal 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 pressure 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-Gearbox cover, 20-Bearing c, 21-Cover bolt, 22-Adjusting nut. Detailed Implementation

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

[0021] like Figures 1-6 As shown, the present invention includes a gearbox cover 19, an input reduction mechanism, an output reduction mechanism, etc. The input reduction mechanism includes an input sun gear 10, an input planetary gear 9, an input internal gear ring 72, and an input planetary carrier 81. The input internal gear ring 72 is fixed. The input sun gear 10 is connected to the motor output shaft 1 to receive power. The input planetary carrier 81 rotates in the input reduction mechanism and outputs power. The output reduction mechanism includes an output sun gear 82, an output planetary gear 6, an output internal gear ring 5, and an output planetary carrier 71. 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 mechanism. The output internal gear ring 5 rotates in the output reduction mechanism and outputs power to the positioning shaft 4.

[0022] Furthermore, the positioning shaft 4 transmits power to the output shaft 1 via a spline. The output shaft 1 then outputs power bilaterally to the left transmission plate 2 and the right bearing pressure plate 11 at both ends of the wheel-side planetary reducer via a hollow transmission. Figure 2 As shown.

[0023] Furthermore, the input internal gear ring 72 of the input reduction mechanism and the output planetary carrier 71 of the output reduction mechanism are integrated into one structure, and the input planetary carrier 81 of the input reduction mechanism and the output sun gear 82 of the output reduction mechanism are integrated into one structure.

[0024] Furthermore, in the hollow transmission structure, the positioning shaft 4 is connected to the output shaft 1 via a spline, and the output shaft 1 is connected to the left transmission plate 2 and the right bearing pressure plate 11 via a spline.

[0025] Furthermore, the input sun gear 10 is the output shaft of the motor 14, used to receive the power input of the motor 14. The input planetary gear shaft 16 is interference-fitted onto the input planetary carrier 81. The input planetary gear 9 has a bearing b15 installed inside it, and the bearing b15 is installed on the input planetary gear shaft 16. The output planetary gear shaft 18 is interference-fitted onto the output planetary carrier 71, and the output planetary gear 6 is installed on the output planetary gear shaft 18.

[0026] Furthermore, the input internal gear ring and output planetary carrier composite 7 are fixed to the motor 14 by interference fit through the outer ring of the input internal gear ring 72; the gearbox cover 19 is fixed to the motor 14 by motor connecting bolt 17; the bearing cover 3 is fixed to the gearbox cover 19 by cover bolt 21; the adjusting nut 22 is threaded to the output shaft 1 to fix the axial position of the left transmission plate 2 and the right bearing pressure plate 11.

[0027] Furthermore, a bearing c20 is installed inside the gearbox cover 19, and the left transmission plate 2 restricts the axial position of the bearing c20; a bearing a13 is installed on the inner right side of the motor 14, and the right bearing pressure plate 11 restricts the axial position of the bearing a13, and an oil seal 12 is installed on its inner side.

[0028] Those skilled in the art will understand that the above embodiments can be modified in form and detail in practical applications without departing from the spirit and scope of the invention.

Claims

1. A dual-output electric drive wheel-side planetary reducer, characterized in that: The system includes an output shaft (1), one end of which is connected to a left transmission plate (2), and the other end is connected to a right bearing pressure plate (11). 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). An output planet gear (6) is connected to the input planet carrier and the output sun gear composite (8) via the input planet carrier and the output sun gear composite (8), and an output planet gear shaft (18) is provided inside the output planet gear (6). An output internal gear ring (5) meshes on the output planet gear (6), and a positioning shaft is connected to the output internal gear ring (5). (4); 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); The input sun gear (10) is the motor output shaft, used to receive the power input of the motor (14); The adjusting nut (22) is threaded to the output shaft (1), and the positioning shaft (4) is connected to the output shaft (1) through a spline. The left transmission plate (2) and the right bearing pressure plate (11) are both connected to the output shaft (1) through a spline.

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) via 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 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.

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) includes an output planetary carrier (71) on which an input internal gear ring (72) is provided.

7. 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).

8. The dual-output electric drive wheel-side planetary reducer as described in claim 6, 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).

9. 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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