CN216158139U

CN216158139U - Bearing sealing device for airplane wheel

Info

Publication number: CN216158139U
Application number: CN202121609710.6U
Authority: CN
Inventors: 张跃; 詹红云
Original assignee: Guizhou Xinan Aviation Machinery Co Ltd
Current assignee: Guizhou Xinan Aviation Machinery Co Ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-04-01
Anticipated expiration: 2031-07-15

Abstract

The utility model provides a bearing seal device for wheel, includes wheel hub, bearing and outer end seal assembly, the bearing is installed at wheel hub center both ends, outer end seal assembly sets up at the bearing outside terminal surface, outer end seal assembly includes the end cover, be equipped with notch and low recess on the end cover, go up the notch and pass through bolt and wheel hub fixed connection, the low recess is connected with the skeleton, the skeleton is located one side of bearing inner ring below, two still be equipped with between the bearing and transfer the clearance bush. According to the bearing sealing device for the airplane wheel, the outer end of the bearing is sealed through the outer end sealing assembly, the sealing performance of the bearing can be improved through the connecting structure and the connecting relation among the hub, the bearing, the end cover, the upper notch, the lower notch, the bolt and the framework, the lubricating effect of the bearing is prevented from being reduced due to the fact that a large amount of lubricating grease is thrown out when the bearing is used at a high speed, the service life of the bearing is shortened, and the frequency of replacing the lubricating grease is effectively reduced.

Description

Bearing sealing device for airplane wheel

Technical Field

The utility model relates to the technical field of airplane bearings, in particular to a bearing sealing device for an airplane wheel.

Background

At present, a bearing sealing structure is widely applied to various mechanical structures, and the main function of the bearing sealing structure is to prevent bearing grease from leaking out, and prevent foreign matters from entering the bearing in the using process to cause abnormal abrasion of rolling parts, so that the bearing is damaged prematurely.

The tapered roller bearing widely used in the airplane wheel adopts a plurality of bearing sealing structures such as oil retainer rings, felt rings and leather cups at present, the tapered roller bearing is mostly arranged on the large end surface of the inner ring of the bearing to be used as an external seal, and the inner end of the tapered roller bearing is not provided with a sealing structure. The oil retainer ring structure is an assembly formed by vulcanizing a metal framework and rubber into a whole, so that the oil retainer ring is convenient to disassemble, but the oil retainer ring is easy to wear under the high rotating speed of a wheel, and bearing lubricating grease can be thrown out; the felt ring has a complex structure, needs to be assembled by matching with metal parts, needs a larger installation space and has poor waterproof performance; the leather cup has a complex structure and needs a large installation space, and is damaged once being disassembled after being used, so that enough leather cups need to be prepared for field use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: a bearing seal arrangement for a wheel is proposed to address the above problems.

In order to realize the purpose, the following technical scheme is adopted: the utility model provides a bearing seal device for wheel, includes wheel hub, bearing and outer end seal assembly, the bearing is installed at wheel hub center both ends, outer end seal assembly sets up at the bearing outside terminal surface, outer end seal assembly includes the end cover, be equipped with notch and low recess on the end cover, go up the notch and pass through bolt and wheel hub fixed connection, the low recess is connected with the skeleton, the skeleton is located one side of bearing inner ring below, two still be equipped with between the bearing and transfer the clearance bush. The action or effect is as follows: make the lower notch that sets up on the end cover and skeleton interconnect form the metal skeleton structure of formula of each other buckled, improve the sealing performance of bearing from this, prevent that bearing in use lubricating grease from throwing away in a large number and causing bearing lubrication effect to reduce, bearing life shortens, effectively reduces lubricating grease and changes the frequency. The upper notch and the lower notch can be positioned on the same side of the end cover or arranged oppositely left and right.

Preferably, two ends of the gap adjusting bush are respectively matched with the end face of the inner ring of the bearing, and leather cups are respectively arranged on two end sleeves of the gap adjusting bush. The action or effect is as follows: the effect of sealing the bearing lubricating grease is realized through the packing cup, and the clearance adjustment can be carried out on the bearing.

Preferably, the gap adjusting bush comprises an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve are connected through a clamping pin, one side, far away from each other, of the outer sleeve and one side, far away from each other, of the inner sleeve are provided with notches, and the leather cup is installed on the notches. The action or effect is as follows: the leather cup is convenient to mount and fix, the internal sealing is realized, and when lubricating grease is prevented from being thrown inwards, the excessive lubricating grease is prevented from being thrown into the hub.

Preferably, the leather cup material is rubber.

Preferably, the section of the leather cup is of a U-shaped structure.

Preferably, the bearing is a tapered roller bearing, which is convenient for installation and play adjustment.

Preferably, gaps are reserved between the cover plate and the inner ring and the outer ring of the bearing, so that the cover plate and the bearing are prevented from being abraded due to friction while sealing is achieved, and the lubricating effect of lubricating grease is guaranteed.

The utility model has the following beneficial effects: the bearing sealing device for the airplane wheel provided by the utility model has the advantages that the outer end of the bearing is sealed through the outer end sealing assembly; the inner end of the bearing is sealed through the gap adjusting bush and the leather cup, and the gap of the bearing can be adjusted. Through the connecting structure and the connecting relation among the hub, the bearing, the end cover, the upper notch, the lower notch, the bolt and the framework, the sealing performance of the bearing can be improved, the bearing is prevented from being reduced in lubricating effect due to the fact that a large amount of lubricating grease is thrown out when the bearing is used at a high speed, the service life of the bearing is shortened, and the frequency of replacing the lubricating grease is effectively reduced; the structure of the leather cup is simple, and the installation position of the leather cup effectively solves the sealing problem.

Drawings

Fig. 1 is a schematic structural diagram of a bearing sealing device for a wheel according to the present invention.

In the figure, 1-hub, 2-bearing, 3-end cover, 4-upper notch, 5-lower notch, 6-bolt, 7-framework, 8-gap adjusting bush, 9-leather cup, 10-outer sleeve, 11-inner sleeve and 12-notch.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, a bearing sealing device for a wheel comprises a wheel hub 1, bearings 2 and outer end sealing assemblies, wherein the bearings 2 are mounted at two central ends of the wheel hub 1, the outer end sealing assemblies are arranged on the end faces of the outer ends of the bearings 2, each outer end sealing assembly comprises an end cover 3, an upper notch 4 and a lower notch 5 are arranged on each end cover 3, each upper notch 4 is fixedly connected with the wheel hub 1 through a bolt 6, each lower notch 5 is connected with a framework 7, so that the end covers 3 can rotate relative to the frameworks 7, the lower part of each framework 7 is located on one side of an inner ring of each bearing 2 to fix the inner ring of each bearing 2, and a gap adjusting bush 8 is further arranged between the two bearings 2; gaps are reserved between the cover plate 3 and the inner ring and the outer ring of the bearing 2, so that abrasion caused by friction between the cover plate 3 and the bearing 2 is avoided; under the high rotating speed of the airplane wheel, bearing lubricating grease cannot be thrown out, and unnecessary abrasion is avoided, so that the lubricating effect and the sealing performance of the lubricating grease are ensured.

And two ends of the gap adjusting bush 8 are respectively matched with the end faces of the inner ring of the bearing 2 to play a role of adjusting the gap of the bearing 2, and the leather cups 9 are respectively arranged on the two end sleeves of the gap adjusting bush 8 to realize the sealing of the inner end of the bearing 2.

Transfer clearance bush 8 and include overcoat 10 and endotheca 11, connect through the bayonet lock between overcoat 10 and the endotheca 11, one side that overcoat 10 and endotheca 11 kept away from each other all is equipped with notch 12, be convenient for with leather cup 9 is installed on notch 12, places bearing 2 in independent space simultaneously, avoids in lubricating grease leaks outward or gets into wheel hub 1.

The leather cup 9 is made of rubber.

The section of the leather cup 9 is of a U-shaped structure, and when lubricating grease is thrown inwards, the lubricating grease is accumulated at the position, so that the phenomenon that the frequency of replacing the lubricating grease or the service life of the lubricating grease is influenced when the redundant lubricating grease is thrown into the hub 1 is prevented.

The bearing 2 is a tapered roller bearing, is convenient to mount and is matched with the clearance adjusting bush 8 to realize clearance adjustment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A bearing seal arrangement for a wheel comprising a hub (1), a bearing (2) and an outer end seal assembly, characterized in that: bearing (2) are installed at wheel hub (1) center both ends, outer end seal assembly sets up at bearing (2) outside end face, outer end seal assembly includes end cover (3), be equipped with notch (4) and lower notch (5) on end cover (3), go up notch (4) through bolt (6) and wheel hub (1) fixed connection, lower notch (5) are connected with skeleton (7), skeleton (7) below is located one side of bearing (2) inner ring, two still be equipped with between bearing (2) and transfer clearance bush (8).

2. A bearing seal arrangement for a wheel according to claim 1, characterised in that: and two ends of the gap adjusting bush (8) are respectively matched with the end surface of the inner ring of the bearing (2), and leather cups (9) are respectively arranged at two end sleeves of the gap adjusting bush (8).

3. A bearing seal arrangement for a wheel according to claim 2, characterised in that: transfer clearance bush (8) including overcoat (10) and endotheca (11), connect through the bayonet lock between overcoat (10) and the endotheca (11), one side that overcoat (10) and endotheca (11) kept away from each other all is equipped with notch (12), leather cup (9) are installed on notch (12).

4. A bearing seal arrangement for a wheel according to claim 2, characterised in that: the leather cup (9) is made of rubber.

5. A bearing seal arrangement for a wheel according to claim 2, characterised in that: the section of the leather cup (9) is of a U-shaped structure.

6. A bearing seal arrangement for a wheel according to any one of claims 1 to 5, characterised in that: the bearing (2) is a tapered roller bearing.