CN219487083U

CN219487083U - Wet braking drive axle assembly for engineering machinery

Info

Publication number: CN219487083U
Application number: CN202223379542.3U
Authority: CN
Inventors: 黄兴明; 蒙小行; 王小雪; 贾策东; 于凡; 孙奥; 刘虹
Original assignee: Lovol Heavy Industry Group Co ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-08-08
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a wet brake drive axle assembly for engineering machinery, which comprises an axle housing, wherein a main speed reducer assembly is arranged in the axle housing, the output end of the main speed reducer assembly is connected with a half axle, both ends of the axle housing are respectively provided with a support shaft, the support shafts are of hollow structures, the inner sides of the support shafts are rotationally connected with sun shafts, the sun shafts are in transmission connection with the half axles, sun gears are arranged on the sun shafts, planet carriers are arranged on the outer sides of the support shafts, planet gears are rotationally connected with the planet carriers, an output gear ring is rotationally connected with the outer sides of the support shafts, the output gear ring is meshed with the planet gears, a brake housing is further arranged on the outer sides of the support shafts, an active friction plate is arranged on the inner sides of the brake housing, a driven friction plate matched with the active friction plate is arranged on the outer sides of the output gear ring, pistons which can be abutted against the active friction plate are in the brake housing, a reset device is arranged between the pistons and the support shafts, and a brake oil inlet is formed in the brake housing. The heat exchange efficiency is improved, and the maintenance is convenient.

Description

Wet braking drive axle assembly for engineering machinery

Technical Field

The utility model relates to the field of engineering machinery ending, in particular to a wet brake drive axle assembly for engineering machinery.

Background

The main braking semi-axis of braking transaxle in the trade at present, and the semi-axis rotational speed is higher, and the vibration noise of production is big, and braking friction disc lubricating oil and transaxle gear lubricating oil sharing, and the heat that the braking produced causes gear lubricating oil high temperature easily, accelerates transaxle bearing, sealed damage, influences transaxle life and reliability, easy maintenance scheduling shortcoming.

Disclosure of Invention

The utility model aims to provide the wet braking drive axle assembly for the engineering machinery, which improves the heat exchange efficiency and is convenient to install a support shaft and an axle housing.

In order to achieve the purpose, the utility model discloses a wet brake drive axle assembly for engineering machinery, which comprises an axle housing, wherein a main reducer assembly is installed in the axle housing, an output end of the main reducer assembly is connected with a half axle, an input end of the main reducer assembly is connected with a main reducer input flange, both ends of the axle housing are respectively provided with a support shaft, the support shaft is of a hollow structure, the inner side of the support shaft is rotationally connected with a sun wheel shaft, the sun wheel shaft is in transmission connection with the half axle, a sun wheel is installed on the sun wheel shaft, a planet carrier is installed on the outer side of the support shaft, a planet wheel is rotationally connected on the planet carrier, an output gear ring is rotationally connected on the outer side of the support shaft, the output gear ring is meshed with the planet wheel, a brake housing is also installed on the outer side of the support shaft, a driving friction plate is installed on the inner side of the brake housing, a piston capable of being abutted against the driving friction plate is installed on the outer side of the output gear ring, an oil inlet is arranged between the piston and the support shaft, an oil inlet is formed in the brake housing, and the brake oil inlet is driven to move. When the brake is used, power is transmitted to the sun gear shaft through the main speed reducer assembly, the sun gear shaft rotates to drive the planet gears and the output gear ring to rotate, power transmission is carried out, when braking is needed, oil is discharged from an oil inlet of the brake, the piston moves under the action of the resetting device, the driving friction plate is in contact with the driven friction plate, braking is completed, and the supporting shaft and the axle housing are convenient to install.

Preferably, the shape of the piston is in a ladder shape, the shape of the inner side wall of the brake shell is in a ladder shape, and the brake oil inlet is communicated with the ladder position of the inner side wall of the brake shell. When in use, the space between the step part of the inner side wall of the brake shell and the step part of the piston forms an oil cavity, thereby being convenient for processing and manufacturing and convenient for use.

Preferably, the brake housing is provided with an air permeable plug, and the air permeable plug corresponds to the positions of the driving friction plate and the driven friction plate. When in use, the influence of air pressure on the piston is reduced.

Preferably, the reset device comprises a large spring and a small spring positioned on the inner side of the large spring, and a spring groove for accommodating the large spring is formed in the piston. When the piston is used, the piston is reset by the elastic force of the large spring and the small spring, and the piston is braked by the elastic force.

Preferably, an end cover is arranged on the output gear ring, and a wear-resistant pin shaft corresponding to the sun gear shaft is arranged on the end cover. When in use, the output gear ring is convenient to install.

Preferably, a first support bearing and a second support bearing are arranged between the output gear ring and the support shaft, and a lock nut for fixing the first support bearing is connected to the support shaft in a threaded manner. When the rotary type gear is used, the output gear ring and the support shaft rotate smoothly, and the rotary type gear is convenient to use.

Preferably, a first floating oil seal is arranged between the output gear ring and the brake shell, and a second floating oil seal is arranged between the output gear ring and the support shaft. When the sealing device is used, the sealing performance between the output gear ring and the brake shell and between the output gear ring and the support shaft is improved.

Preferably, an input spline housing is arranged on the sun gear shaft, the input spline housing is adapted to the half shaft, an input bearing is arranged between the input spline housing and the inner side of the support shaft, and a hole check ring for fixing the input bearing is arranged on the inner side of the support shaft. When in use, the sun gear shaft rotates smoothly.

Preferably, the support shaft is connected with a mounting and fixing interface which is annular and protruding, and the mounting and fixing interface is adapted to the axle housing. When in use, the power input structure is convenient to install.

Preferably, a large braking sealing ring and a small braking sealing ring are arranged between the piston and the brake shell. When the sealing device is used, the sealing performance between the piston and the brake shell is improved.

In summary, the beneficial effects of the utility model are as follows: when the novel electric brake is used, power is transmitted to the sun gear shaft through the main speed reducer assembly, the sun gear shaft rotates to drive the planet gears and the output gear ring to rotate, power transmission is carried out, when braking is needed, the oil is discharged from the oil inlet of the brake, the piston moves under the action of the resetting device, the driving friction plate is in contact with the driven friction plate, braking is completed, oil is arranged in the brake shell, the lubricating oil of the braking friction plate is independent of the lubricating oil of the driving axle gear, heat exchange efficiency is improved, and the novel electric brake is integrated with the wheel-side speed reducer, is convenient to arrange, reasonable in layout and convenient to maintain and repair. The supporting shaft and the axle housing are convenient to install and detach and convenient to maintain.

Drawings

FIG. 1 is a schematic illustration of a wet brake drive axle assembly for a construction machine in accordance with the present utility model;

FIG. 2 is a schematic illustration of the internal structure of a wet brake drive axle assembly for a construction machine in accordance with the present utility model;

FIG. 3 is a schematic illustration of the internal structure of a brake in a wet brake drive axle assembly for a construction machine in accordance with the present utility model;

fig. 4 is a right side view of fig. 3.

In the figure: 1. a support shaft; 2. a piston; 3. braking the large sealing ring; 4. a large spring; 5. braking the small sealing ring; 6. a small spring; 7. a ventilation plug; 8. a driven friction plate; 9. an active friction plate; 10. a brake housing; 11. a first floating oil seal; 12. an output gear ring; 13. a bolt; 14. an end cap; 15. a planet wheel; 16. a planet carrier; 17. wear-resisting pin shaft; 18. a sun gear shaft; 19. a planet wheel bearing; 20. a lock nut; 21. an input bearing; 22. an oil drain plug; 23. a first support bearing; 24. a second support bearing; 25. the second floating oil seal; 26. inputting a spline housing; 27. a retainer ring for holes; 28. adding an oil drain screw plug; 29. a screw; 30. a brake oil inlet; 31. installing a fixed interface; 32. a sun gear; 33. a bridge housing; 34. a half shaft; 35. a final drive assembly; 36. a main reducer input flange; 37. the axle housing is provided with an oil drain screw plug.

Detailed Description

The following describes in further detail the embodiments of the present utility model with reference to the drawings and examples. The following examples are illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, 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, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The utility model is further described with reference to the drawings and detailed description which follow:

as shown in fig. 1 to 4, a wet brake driving axle assembly for engineering machinery comprises an axle housing 33, an axle housing oil drain screw plug 37 is mounted on the axle housing 33, a main speed reducer assembly 35 is mounted in the axle housing 33, an output end of the main speed reducer assembly 35 is connected with a half axle 34, an input end of the main speed reducer assembly 35 is connected with a main speed reducer input flange 36, support shafts 1 are mounted at two ends of the axle housing 33, the support shafts 1 are in a conical shape, the size of the input end of the support shafts 1 is larger than that of the output end of the support shafts 1, the support shafts 1 are of hollow structures, a sun wheel shaft 18 is in transmission connection with the half axle 34, a sun wheel 32 is mounted on the sun wheel shaft 18, a planet carrier 16 is mounted on the outer side of the support shafts 1, a planet wheel 15 is in rotation connection with the planet wheel 16, a planet wheel bearing 19 is mounted between the planet wheel 15 and the planet carrier 16, an output gear 12 is in rotation connection with the outer side of the support shafts 1, the planet wheel 15 is meshed with the planet wheel 15, a brake housing 10 is mounted on the outer side of the support shafts 1 through screws 29, the inner side of the brake housing 10 is in a conical shape, the inner side of the brake housing 10 is in rotation with the brake housing 10, an oil inlet 9 is mounted on the outer side of the brake housing 10 and is in friction plate 2 is in friction fit with the brake housing 2, an oil inlet is mounted on the inner side of the brake housing 2, and is in friction plate 2 is in friction fit with the brake housing 2, and is in friction plate 2. The brake housing 10 is provided with an oil drain plug 22. When the brake is used, power is transmitted to the sun gear shaft 18 through the main speed reducer assembly 35, the sun gear shaft 18 rotates to drive the planet gears 15 and the output gear ring 12 to rotate, power transmission is carried out, when braking is needed, the oil is discharged from the brake oil inlet 30, the piston 2 moves under the action of the resetting device, the driving friction plate 9 contacts with the driven friction plate 8, braking is completed, oil is arranged in the brake shell 10, heat exchange efficiency is improved, and the support shaft 1 and the axle housing 33 are convenient to install.

Preferably, the piston 2 is in a stepped shape, the inner side wall of the brake housing 10 is in a stepped shape, and the brake oil inlet 30 is communicated with the stepped part of the inner side wall of the brake housing 10. When in use, the space between the ladder position of the inner side wall of the brake shell 10 and the ladder position of the piston 2 forms an oil cavity, thereby being convenient for processing and manufacturing and convenient for use.

Preferably, the brake housing 10 is provided with an air-permeable plug 7, and the air-permeable plug 7 corresponds to the positions of the driving friction plate 9 and the driven friction plate 8. In use, the influence of air pressure on the piston 2 is reduced.

The resetting device comprises a large spring 4 and a small spring 6 positioned at the inner side of the large spring 4, and a spring groove for accommodating the large spring 4 is formed in the piston 2. When in use, the piston 2 is reset by the elastic force of the big spring 4 and the small spring 6, and is braked by the elastic force.

An end cover 14 is arranged on the output gear ring 12 through a bolt 13, and a wear-resistant pin shaft 17 corresponding to a sun gear shaft 18 is arranged on the end cover 14. The end cap 14 is provided with a filling and draining plug screw 28. In use, the output ring gear 12 is conveniently mounted.

A first support bearing 23 and a second support bearing 24 are arranged between the output gear ring 12 and the support shaft 1, and a lock nut 20 for fixing the first support bearing 23 is connected to the support shaft 1 in a threaded manner. When in use, the output gear ring 12 and the support shaft 1 rotate smoothly, and the use is convenient.

A first floating oil seal 11 is arranged between the output gear ring 12 and the brake housing 10, and a second floating oil seal 25 is arranged between the output gear ring 12 and the support shaft 1. In use, the tightness between the output ring gear 12 and the brake housing 10 and between the output ring gear 12 and the support shaft 1 is improved.

An input spline housing 26 is mounted on the sun gear shaft 18, the input spline housing 26 is adapted to the half shaft 34, an input bearing 21 is mounted between the input spline housing 26 and the inner side of the support shaft 1, and a hole retainer ring 27 for fixing the input bearing 21 is mounted on the inner side of the support shaft 1. In use, the sun gear shaft 18 rotates smoothly.

The support shaft 1 is connected with a mounting and fixing interface 31 which is in a ring-shaped bulge shape, and the mounting and fixing interface 31 is adapted to the axle housing 33. When in use, the power input structure is convenient to install.

A large braking sealing ring 3 and a small braking sealing ring 5 are arranged between the piston 2 and the brake shell 10. In use, the tightness between the piston 2 and the brake housing 10 is improved.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.

Claims

1. The utility model provides a wet brake driving axle assembly for engineering machinery, a serial communication port, including axle housing (33), install main reducer assembly (35) in axle housing (33), the output of main reducer assembly (35) is connected with semi-axis (34), back shaft (1) are all installed at axle housing (33) both ends, back shaft (1) is hollow structure, back shaft (1) inboard rotation is connected with sun gear axle (18), sun gear axle (18) are connected with semi-axis (34) transmission, install sun gear (32) on sun gear axle (18), planet carrier (16) are installed in back shaft (1) outside, rotationally be connected with planet wheel (15) on planet carrier (16), back shaft (1) outside rotation is connected with output ring gear (12), output ring gear (12) mesh with planet wheel (15), back shaft (1) outside still installs stopper casing (10), stopper casing (10) inboard is installed initiative friction disc (9), driven friction disc (8) with initiative friction disc (9) matched with are installed in back shaft (12) outside, stopper casing (10) is connected with in a sliding way and can be equipped with piston (2) and reset between piston (2), a brake oil inlet (30) is formed in the brake shell (10), the brake oil inlet (30) is used for driving the piston (2) to move, and an oil drain plug (22) is arranged on the brake shell (10).

2. The wet brake drive axle assembly for engineering machinery according to claim 1, wherein the piston (2) is stepped, the inner side wall of the brake housing (10) is stepped, and the brake oil inlet (30) is communicated with the stepped position of the inner side wall of the brake housing (10).

3. The wet brake drive axle assembly for construction machinery according to claim 1, wherein the brake housing (10) is provided with a ventilation plug (7), and the ventilation plug (7) corresponds to the positions of the driving friction plate (9) and the driven friction plate (8).

4. The wet brake drive axle assembly for engineering machinery according to claim 1, wherein the reset device comprises a large spring (4) and a small spring (6) positioned on the inner side of the large spring (4), and a spring groove for accommodating the large spring (4) is formed in the piston (2).

5. A wet brake drive axle assembly for construction machinery according to claim 1, characterized in that an end cover (14) is mounted on the output gear ring (12), and a wear-resistant pin (17) corresponding to the sun gear shaft (18) is mounted on the end cover (14).

6. A wet brake drive axle assembly for a construction machine according to any one of claims 1 to 5, characterized in that a first support bearing (23) and a second support bearing (24) are mounted between the output ring gear (12) and the support shaft (1), and that a lock nut (20) for fixing the first support bearing (23) is screwed to the support shaft (1).

7. A wet brake drive axle assembly for a construction machine according to any one of claims 1 to 5, characterized in that a first floating oil seal (11) is mounted between the output ring gear (12) and the brake housing (10), and a second floating oil seal (25) is mounted between the output ring gear (12) and the support shaft (1).

8. A wet brake drive axle assembly for a construction machine according to any one of claims 1 to 5, characterized in that an input spline housing (26) is mounted on the sun gear shaft (18), the input spline housing (26) is adapted to the half shaft (34), an input bearing (21) is mounted between the input spline housing (26) and the inside of the support shaft (1), and a hole retainer ring (27) for fixing the input bearing (21) is mounted on the inside of the support shaft (1).

9. A wet brake drive axle assembly for construction machinery according to any one of claims 1 to 5, characterized in that the support shaft (1) is connected with a mounting and fixing interface (31) in the form of an annular projection, the mounting and fixing interface (31) being adapted to the axle housing (33).

10. A wet brake drive axle assembly for a construction machine according to any one of claims 1 to 5, characterized in that a large brake sealing ring (3) and a small brake sealing ring (5) are mounted between the piston (2) and the brake housing (10).