CN219263146U

CN219263146U - Wet-type braking wheel-side speed reducer assembly for engineering machinery

Info

Publication number: CN219263146U
Application number: CN202223379564.XU
Authority: CN
Inventors: 黄兴明; 蒙小行; 王小雪; 贾策东; 于凡; 孙奥; 刘虹
Original assignee: LOVOL Engineering Machinery Group Co Ltd
Current assignee: Lovol Heavy Industry Group Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-06-27
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a wet brake hub reduction gear assembly for engineering machinery, which comprises a support shaft, wherein the support shaft is of a hollow structure, the inner side of the support shaft is rotationally connected with a sun gear shaft, a sun gear is arranged on the sun gear shaft, a planet carrier is arranged 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 shell is further arranged on the outer side of the support shaft, a driving friction plate is arranged on the inner side of the brake shell, a driven friction plate matched with the driving friction plate is arranged on the outer side of the output gear ring, a piston capable of propping against the driving friction plate is slidingly connected in the brake shell, a reset device is arranged between the piston and the support shaft, a brake oil inlet is formed in the brake shell, and the oil inlet of the brake oil is used for driving the piston to move. The brake and the wheel-side speed reducer are integrated, so that the brake is convenient to arrange, reasonable in layout and convenient to maintain and repair.

Description

Wet-type braking wheel-side speed reducer assembly for engineering machinery

Technical Field

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

Background

The wheel-side speed reducer and the brake of the existing engineering machinery are arranged in a split mode, and the technical scheme has the following defects: the wheel-side speed reducer and the brake are required to be arranged at the respective positions, so that the layout and design are troublesome, and meanwhile, as the circuit arrangement is also troublesome, the brake and the drive axle share lubricating oil, the heat exchange capacity of the friction pair of the brake is low, and the friction pair of the brake is easy to overheat. In addition, when the brake is maintained and repaired, the hub reduction gear needs to be disassembled, and the brake is poor in maintenance and repair.

Disclosure of Invention

The utility model aims to provide a wet brake hub reduction gear assembly for engineering machinery, and the integrated design of a brake and a hub reduction gear.

In order to achieve the purpose, the utility model discloses a wet brake wheel-side speed reducer assembly for engineering machinery, which comprises a support shaft, wherein the support shaft is of a hollow structure, the inner side of the support shaft is rotationally connected with a sun wheel shaft, a sun wheel is arranged on the sun wheel shaft, a planet carrier is arranged 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 shell is further arranged on the outer side of the support shaft, an active friction plate is arranged on the inner side of the brake shell, a driven friction plate matched with the active friction plate is arranged on the outer side of the output gear ring, a piston capable of being propped against the active friction plate is slidingly connected in the brake shell, a reset device is arranged between the piston and the support shaft, a brake oil inlet is formed in the brake shell, the brake oil inlet is driven by oil inlet, and an oil drain plug is arranged on the brake shell. When the brake is used, 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, and the driving friction plate is contacted with the driven friction plate, so that braking is completed.

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, 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 in the shape of an annular bulge. 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: the brake and the wheel-side speed reducer are integrated, so that the brake is convenient to arrange, reasonable in layout and convenient to maintain and repair. When the brake is used, 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 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, and the lubricating oil of the braking friction plate is independent of the lubricating oil of the driving axle gear, so that the heat exchange efficiency is improved.

Drawings

FIG. 1 is a schematic diagram of a wet brake hub reduction assembly for a construction machine according to the present utility model;

fig. 2 is a schematic structural view of the section A-A in fig. 1.

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. and a sun gear.

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 and 2, the wet brake hub reduction gear assembly for engineering machinery comprises a support shaft 1, specifically, the shape of the support shaft 1 is conical, the size of the input end of the support shaft 1 is larger than that of the output end of the support shaft 1, the support shaft 1 is of a hollow structure, a sun gear shaft 18 is rotatably connected to the inner side of the support shaft 1, a sun gear 32 is mounted on the sun gear shaft 18, a planet carrier 16 is mounted on the outer side of the support shaft 1, a planet wheel 15 is rotatably connected to the planet carrier 16, a planet wheel bearing 19 is mounted between the planet wheel 15 and the planet carrier 16, an output gear ring 12 is rotatably connected to the outer side of the support shaft 1, the output gear ring 12 is meshed with the planet wheel 15, a brake housing 10 is further mounted on the outer side of the support shaft 1 through a screw 29, a driving friction plate 9 is mounted on the inner side of the brake housing 10, a driven friction plate 8 matched with the driving friction plate 9 is mounted on the outer side of the output gear ring 12, a piston 2 capable of propping against the driving friction plate 9 is slidably connected to the inner side of the brake housing 10, a reset device is arranged between the piston 2 and the support shaft 1, an oil inlet is formed in the brake housing 10, a brake 30 is rotatably mounted on the brake housing 30, and the brake housing 30 drives the piston 2 to move in a driving oil inlet. The brake housing 10 is provided with an oil drain plug 22. When the brake is used, 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 brake oil inlet 30 discharges oil, 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, and heat exchange efficiency is improved.

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, 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 in the shape of an annular protrusion. 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-type brake wheel limit reduction gear assembly for engineering machine tool, a serial communication port, including back shaft (1), back shaft (1) is hollow structure, back shaft (1) inboard rotates and is connected with sun gear axle (18), install sun gear (32) on sun gear axle (18), planet carrier (16) are installed in back shaft (1) outside, rotate on planet carrier (16) and be connected with planet wheel (15), back shaft (1) outside rotates and is connected with output ring gear (12), output ring gear (12) meshes with planet wheel (15), brake housing (10) are still installed in back shaft (1) outside, brake housing (10) inboard installs initiative friction disc (9), output ring gear (12) outside install with initiative friction disc (9) matched with driven friction disc (8), brake housing (10) inboard sliding connection has piston (2) that can offset with initiative friction disc (9), be equipped with reset device between piston (2) and back shaft (1), brake housing (10) are equipped with stopper (30), brake oil inlet (30) are equipped with on brake housing (10) and brake housing (2) motion is equipped with stopper (22).

2. The wet brake hub reduction gear assembly for engineering machinery according to claim 1, wherein 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).

3. The wet brake hub reduction assembly for construction machinery according to claim 1, wherein 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).

4. The wet brake hub reduction gear 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. The wet brake hub reduction assembly for construction machinery according to claim 1, wherein an end cover (14) is mounted on the output gear ring (12), and a wear-resistant pin shaft (17) corresponding to the sun gear shaft (18) is mounted on the end cover (14).

6. Wet brake hub reduction assembly for construction machinery according to any of claims 1 to 5, characterized in that a first support bearing (23) and a second support bearing (24) are mounted between the output gear ring (12) and the support shaft (1), and that a lock nut (20) for fixing the first support bearing (23) is screwed onto the support shaft (1).

7. Wet brake hub reduction gear assembly for construction machinery according to any 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. Wet brake hub reduction assembly for construction machinery according to any of claims 1 to 5, characterized in that an input spline housing (26) is mounted on the sun gear shaft (18), 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. Wet brake hub reduction assembly for construction machinery according to any of claims 1 to 5, characterized in that the support shaft (1) is connected with a mounting and fixing interface (31) in the shape of an annular bulge.

10. Wet brake hub reduction gear assembly for construction machinery according to any 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).