CN201202814Y

CN201202814Y - Vehicle axel hub oil seal

Info

Publication number: CN201202814Y
Application number: CNU2008200227918U
Authority: CN
Inventors: 杜杰
Original assignee: 杜杰
Current assignee: Yantai Runfuxiang Oil Seal Co., Ltd.
Priority date: 2008-05-23
Filing date: 2008-05-23
Publication date: 2009-03-04
Anticipated expiration: 2018-05-23

Abstract

The utility model discloses a vehicle-bridge wheel hub oil seal which comprises an inner oil seal and an outer oil seal; wherein, the inner oil seal is composed of an inner framework and an inner rubber body; the outer oil seal is composed of an outer rubber body and an outer framework; the vehicle-bridge wheel hub oil seal is characterized in that the outer oil seal is mounted in the space formed by the inner framework outer cylindrical surface of the inner oil seal and the framework end surface; the L-shaped outer framework is vertically mounted with the hemline framework end surface of the inner framework; a convex main lip port is formed on the upper part of the outer rubber body; the main lip port is contacted with the outer cylindrical surface of the inner framework; a lubricating grease cavity is formed between the inner oil seal and the outer oil seal. The vehicle-bridge wheel hub oil seal has the advantages of low cost, high mounting efficiency, avoiding the oil seal assembly failure, combination structure, reducing the assembly number and improving the assembly efficiency.

Description

A kind of vehicle bridge hub oil seal

Technical field

The utility model belongs to running shaft and uses the oil seal technique field, especially the built-up shaft oil sealing that uses on the vehicle bridge wheel hub of heavy goods vehicles.

Background technique

At present, domestic heavy goods vehicles is when carrying, can not be in strict accordance with specified requirement carrying, serious the exceeding standard of being born of actual supporting power, thereby the vehicle bridge that causes vehicle is being born considerable damage power and is being caused the vehicle bridge hub oil seal to damage or destruction generation leakage of oil, in order to solve the oil sealing problem of oil sealing, most of Railway Car Plant man assembles before and after two single oil sealings of the technical employing of the oil sealing of wheel hub, prevents the actual effect of oil sealing with the mode of secondary oil sealing.Do like this and not only improved cost of material, and improved installation work-hour; The oil sealing leakage of oil, mainly, causes the oil-sealing mouth of oil sealing because being destroyed, the destruction of oil seal lip has the relation except the structure and material with oil sealing, exist very big relation with the whole assembly process of oil sealing, the axletree of large car is as easy as rolling off a log in processing or handling process to cause bump injury or scuffing, if can not effectively avoid, even adopt two oil sealings to adopt the secondary oil sealing neither finally solve the way of oil sealing problem.

Summary of the invention

The purpose of this utility model is to improve the deficiency of prior art and provides that a kind of cost is low, installation efficiency is high, is difficult for causing oil sealing assembling inefficacy, fabricated structure, has reduced the assembling number of times, has improved the vehicle bridge hub oil seal of efficiency of assembling.

The purpose of this utility model is to realize like this, a kind of vehicle bridge hub oil seal, the outer oil seal that inner oil seal that is made of inner frame and interior rubber body and outer rubber body, dermoskeleton are configured to is formed, be characterized in that outer oil seal is installed in the space that the inner frame external cylindrical surface of inner oil seal and skeleton end face form, the cross section is that the outer skeleton of L type and the base skeleton end face of inner frame form installation up and down, the main lip of projection is formed at the top of outer rubber body, main lip contacts with the external cylindrical surface of inner frame, forms grease pocket between inner oil seal and outer oil seal.

In order further to realize the purpose of this utility model, can be that the bottom of rubber body outside is provided with dustproof lip, dustproof lip contacts with inner frame.

In order further to realize the purpose of this utility model, can be that dustproof lip is more than 2 roads reach.

In order further to realize the purpose of this utility model, can be that the base of skeleton outside is provided with the rubber bumps that contacts with inner frame base skeleton end face away from the inner frame place.

In order further to realize the purpose of this utility model, can be that the main lip opposite side of rubber body outside is provided with spring.

Compared with the prior art the utility model has following distinguishing feature and good effect: this uses novel employing outer oil seal and inner oil seal to combine, inner oil seal is assembled on the hub spindle by the size interference between interior rubber body and the hub spindle, play the effect of static seal, inner oil seal is along with hub spindle together rotates simultaneously, outer oil seal is by the static seal oil sealing of outer skeleton and outer rubber body and hub oil seal assembling die cavity interference realization wheel hub die cavity, the outer rubber body oil sealing master lip of outer oil seal is close to the oil sealing that realizes motive sealing on the external cylindrical surface with the inner frame of the inner oil seal that together rotates along with hub spindle, design has dustproof lip on the outer oil seal, contact with the inner frame of inner oil seal respectively, realize dust reduction capability; Design has rubber bumps on the outer oil seal, the frock of purpose to be oil sealing be pressed into when assembling oil sealing is pushed down inner oil seal and together interior outer oil seal is pressed into the specified position of hub spindle and wheel hub die cavity by the rubber bumps of outer oil seal, has guaranteed that simultaneously the cooperation of interior outer oil seal meets designing requirement.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described in further detail.

Fig. 1 is a kind of structural representation of the present utility model.

Fig. 2 is an another kind of structural representation of the present utility model.

Fig. 3 is another structural representation of the present utility model.

Specific embodiments

Embodiment 1, a kind of vehicle bridge hub oil seal, with reference to Fig. 1, it is the inner oil seal 1 that rubber body 3 constitutes in the outside of inner frame 2 is enclosed with, outer skeleton 6 is wrapped with the outer oil seal 4 that outer rubber body 5 constitutes, the cross section of inner frame 2 and outer skeleton 6 is the L type, outer oil seal 4 is installed in the space that inner frame 2 external cylindrical surfaces of inner oil seal 1 and skeleton end face form, the base skeleton end face of the outer skeleton 6 of L type and inner frame 2 forms up and down by dress, the main lip 7 of projection is formed at the top of outer rubber body 5, main lip 7 contacts with the external cylindrical surface of inner frame 2,4 of inner oil seal 1 and outer oil seals form grease pocket 8, be filled with lubricating grease in the grease pocket 8, this constitutes a kind of structure of the present utility model.

Embodiment 2, a kind of vehicle bridge hub oil seal, with reference to Fig. 2, be on embodiment 1 basis, the bottom of rubber body 5 is provided with dustproof lip 9 outside, dustproof lip 9 contacts with inner frame 2, dustproof lip 9 is more than 2 roads reach, and present embodiment adopts together dustproof lip 9, and dustproof lip 9 contacts with inner frame 2 Transverse planes of inner oil seal 1, realize dust reduction capability, other and embodiment 1 are identical.

Embodiment 3, a kind of vehicle bridge hub oil seal, with reference to Fig. 3, be on embodiment 2 basis, the base of skeleton 6 is provided with the rubber bumps 10 that contacts with inner frame 2 base skeleton end faces away from inner frame 2 places outside, and main lip 7 opposite sides of rubber body 5 are provided with spring 11 outside, present embodiment adopts the dustproof lip 9 of twice, the dustproof lip 9 of twice contact with external cylindrical surface with inner frame 2 Transverse planes of inner oil seal 1 respectively, the realization dust reduction capability, and other and embodiment 2 are identical.

When using the utility model, fix with the running shaft interference by the interior rubber body 3 that inner oil seal 1 endoporus place is adhered to, play the static seal function, main lip 7 on the outer oil seal 4 contacts with the external cylindrical surface interference of inner frame 2, realize motive sealing, the dustproof lip 9 of design contacts with Transverse plane with the skeleton cylndrical surface of inner oil seal 1 respectively on the outer oil seal 4, realize dust reduction capability, outer oil seal 4 wheel hub die cavity cooperation places are designed to the metal body and the die cavity body interference fit of outer skeleton 6, realize the reliability of assembling, outer rubber body 5 and wheel hub die cavity body interference fit on the periphery of outer skeleton 6 of while, realize the static seal at die cavity position, height in the uniform rubber bumps 10 of the planar end surface outside of the outer skeleton 6 of outer oil seal 4 guarantees that just in time dustproof lip 9 meets designing requirement with the degree that inner frame 2 contacts, during oil sealing assembling simultaneously, the Transverse plane of pushing down inner oil seal 1 with frock is pressed into inner oil seal 1 and outer oil seal 4 formulation position in hub spindle and the wheel hub die cavity simultaneously by rubber bumps 10, in the grease pocket 8 lithium grease is arranged, can effectively improve the working life of oil sealing.

Claims

1, a kind of vehicle bridge hub oil seal, be inner oil seal (1) and the outer rubber body (5) that constitutes by inner frame (2) and interior rubber body (3), the outer oil seal (4) that outer skeleton (6) constitutes is formed, it is characterized in that outer oil seal (4) is installed in the space that inner frame (2) external cylindrical surface of inner oil seal (1) and skeleton end face form, the cross section is that the outer skeleton (6) of L type and the base skeleton end face of inner frame (2) form installation up and down, the main lip (7) of projection is formed at the top of outer rubber body (5), main lip (7) contacts with the external cylindrical surface of inner frame (2), forms grease pocket (8) between inner oil seal (1) and outer oil seal (4).

2, a kind of vehicle bridge hub oil seal according to claim 1 is characterized in that the bottom of rubber body (5) is provided with dustproof lip (9) outside, and dustproof lip (9) contacts with inner frame (2).

3, a kind of vehicle bridge hub oil seal according to claim 2 is characterized in that dustproof lip (9) is more than 2 roads reach.

4, a kind of vehicle bridge hub oil seal according to claim 1 and 2 is characterized in that the rubber bumps (10) that contacts with inner frame (2) base skeleton end face is located to be provided with away from inner frame (2) in the base of skeleton (6) outside.

5, a kind of vehicle bridge hub oil seal according to claim 1 is characterized in that main lip (7) opposite side of rubber body (1) is provided with spring (11) outside.