CN202251973U

CN202251973U - Multifunctional hub oil seal

Info

Publication number: CN202251973U
Application number: CN2011204156326U
Authority: CN
Inventors: 吴克胜
Original assignee: JIEYANG TIANCHENG SEAL COMPONENTS CO Ltd
Current assignee: Guangdong Tiancheng seal Limited by Share Ltd
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2012-05-30
Anticipated expiration: 2021-10-27

Abstract

The utility model relates to a multifunctional hub oil seal applied to an axle structure comprising an external connecting ring, an external helical cover and a working shaft. The multifunctional hub oil seal comprises a metal framework, an inner sealing colloid being arranged on the inner end of the metal framework and being in tight contact with the working shaft, an external sealing colloid arranged on the outer side surface of the metal framework and tightly matched with an internal thread of the external helical inner cover, and a spring sleeved on the inner sealing colloid, wherein the upper end of the metal framework is in contact with the bottom of the external helical cover in a force-bearing manner, and the lower bottom surface of the metal framework is in contact with the external connecting ring in a force-bearing manner. The utility model realizes that one part has multiple functions, breaks the traditional principle that the oil seal only has the single sealing function, is equivalent to three parts of the traditional hub oil seal, the traditional internal connecting ring and the traditional oil seal cavity in the axle structure so as to save two parts of the internal connecting ring and the oil seal cavity, thus quantity of parts is reduced, assembly procedures are simplified, and purposes of reducing cost, increasing efficiency and saving resources are achieved.

Description

Multi-functional wheel hub oil sealing

Technical field

The utility model relates to a kind of multi-functional wheel hub oil sealing that following type and semi-floating drive the new structure of vehicle bridge new technology that applies to adapt to.

Background technique

At present domestic mainly is the vehicle bridge structure that adopts a plurality of parts to form, and this kind structure is mainly formed (as shown in Figure 4) by outer connecting ring assembly (5), interior connecting ring (8), oil sealing die cavity (9), hub oil seal, external spiral lid (6) and working shaft (7).Wherein the hub oil seal of vehicle bridge is the TC structure oil sealing that extensively uses at present, and this type of oil sealing design is simpler, but for the vehicle bridge structure; The part of the coupling that need install is more; Difficulty is bigger, and the difficult control of the process of installation causes a lot of inconvenience; And later period maintenance is also cumbersome, and Environmental Conditions is very restricted.

Summary of the invention

The utility model is in order to satisfy the seal request that improves day by day and to adapt to harsh more working condition, according to the characteristics of vehicle bridge structure; Relevant part and oil sealing incorporated becomes single multi-functional wheel hub oil sealing part; Make this hub oil seal not only simplify the structure of vehicle bridge, and possessed the function of lubrication and seal simultaneously, the hub oil seal body can storing lubricating oil fat be that bearing provides lubrication protection; And play the support positioning action of bearing, further promoted the technical merit in oil sealing field.

The utility model; Be applied to contain in the vehicle bridge structure of outer connecting ring assembly, external spiral lid and working shaft; Said multi-functional wheel hub oil sealing comprises metal frame, be positioned at the inner and sealed colloid that closely contact with working shaft of metal frame, be positioned at the metal frame outer side surface and cover the close-fitting external sealed colloid of internal thread and be enclosed within the spring on the sealed colloid with external spiral; The upper end of said metal frame contacts with external spiral lid bottom load, and the bottom surface of said metal frame contacts with connecting ring assembly load.

The utility model, said external sealed colloid contain the worm structure with external spiral lid screw-thread fit, below interior sealed colloid, are provided with two slow secondary lips of pressing.

The utility model, said metal frame is by the steel plate impact briquetting processing of thickness >=2mm, pressure >=20t that its bottom surface can bear.

The utility model has following good effect:

(1) the utility model is to the simplification of the wheel hub system that drives vehicle bridge and each component of the whole vehicle bridge of more omnibearing protection; Thereby carry out the multi-functional wheel hub oil sealing of innovative design; Not only simplify the vehicle bridge structure, and improved the Safety performance of the system of vehicle bridge;

(2) this multi-functional wheel hub oil sealing realized one multi-functional; Break the traditional idea that oil sealing only possesses single sealing function, in the vehicle bridge structure, be equivalent to original hub oil seal, interior connecting ring and three parts of oil sealing die cavity; Connecting ring and two parts of oil sealing cavity in saving; Both reduced the quantity of part, also simplified assembly process, and reduced cost to reach, raise the efficiency, aim of saving;

(3) this multi-functional wheel hub oil sealing not only can be tackled more abominable seal operation situation, and has the function that stores heavy wool fat more, supports the location.

The utlity model has simple in structure, install convenient, lubrication and seal property strong, long service life, the assurance bearing working is stable and satisfy harsh advantages such as working condition.

Description of drawings

Fig. 1 is the structure principle chart of traditional hub oil seal; Fig. 2 is the structure principle chart of the multi-functional wheel hub oil sealing of the utility model; Fig. 3 is the structure principle chart of metal frame in the multi-functional wheel hub oil sealing of the utility model; Fig. 4 is applied to the assembly structure figure in the vehicle bridge structure for traditional hub oil seal; Fig. 5 is applied to the assembly structure figure in the vehicle bridge structure for the multi-functional wheel hub oil sealing of the utility model.

Among the figure, 1, the secondary lip of metal frame 11, upper end-hole 12, bottom surface 2, interior sealed colloid 21, two slow pressure 3, external sealed colloid 31, worm structure 4, spring 5, outer connecting ring 6, external spiral lid 7, working shaft 8, interior connecting ring 9, oil sealing die cavity 10, lubricating grease.

Embodiment

With reference to Fig. 1, Fig. 3 and Fig. 5; This multi-functional wheel hub oil sealing; Be applied to contain in the vehicle bridge structure of outer connecting ring 5, external spiral lid 6 and working shaft 7; Said multi-functional wheel hub oil sealing comprises metal frame 1, be positioned at the inner and sealed colloids 2 that closely contact with working shaft 7 of metal frame, be positioned at the metal frame outer side surface and cover the close-fitting external sealed colloid 3 of 6 internal threads and be enclosed within the spring 4 on the sealed colloid 2 with external spiral; The upper end 11 and the external spiral of said metal frame 1 covers 6 bottom loads and contacts, and the bottom surface 12 of said metal frame 1 contacts with outer connecting ring 5 loads; Said external sealed colloid 3 contains the worm structure 31 that covers 6 screw-thread fit with external spiral, below interior sealed colloid 2, is provided with two slow secondary lips 21 of pressing; Said metal frame 1 is by the steel plate impact briquetting processing of thickness >=2mm, pressure >=20t that its bottom surface 12 can bear.

The utility model compares with existing hub oil seal, has following difference:

1, from Fig. 1 and Fig. 2, can find out; Be different from traditional oil seal structure on the multi-functional wheel hub oil seal structure of the utility model; In Fig. 2: the effect of worm structure 31 is that oil sealing can cooperate with the external spiral lid of vehicle bridge more closely; Not only can simplify the part of assembling, and the inner chamber position of screw lid stores more lubricating oil fat outside, for each position of vehicle bridge provides lubricated more fully; When the effect that anti-height bears pressure bottom surface 12 is this axle components work, can produce 20 tons work gravity, and this hub oil seal need bear huge working pressure separately because of being to be directly installed on the working position of vehicle bridge; The effect of the secondary lip 21 of slow pressure is to play the skeleton end face and better dustproof effect of protection hub oil seal; When working pressure increases suddenly; Can the not wound skeleton end face of hub oil seal of the part end face that cooperates with hub oil seal, this product is that the design of two-pack lip has better guaranteed the dustproof effect to axle simultaneously.

2, because of the vehicle bridge structural system in when work, can produce the work gravity more than 20 tons, the skeleton of this hub oil seal need be selected the steel plate of adequate thickness and intensity; Flatness to bottom the oil tight skeleton of bringing into play this effect requires high; As shown in Figure 3: the external diameter tolerance of skeleton and height tolerance are controlled very strictly, and skeleton thickness reaches 2mm, and must possess has outstanding punching equipment and technology just can reach; Must heat-treat skeleton simultaneously; And can not influence the bonding effect of skeleton and rubber, the concentricity of perpendicularity and internal diameter all must remain in 0.05 simultaneously, is the appearance quality that when vulcanizing, can better guarantee product in order to ensure skeleton like this; Reduced the phenomenon that the product surface encapsulate takes place; The more important thing is that this skeleton can possess the gravity that bears more than 20 tons, guarantee bearing is played support and locating effect, use more safe and reliable.And the metal frame in traditional oil sealing; Only play the effect of supporting interior sealed colloid 2 and external sealed colloid 3; In the vehicle bridge structure, the metal frame in traditional oil sealing does not bear the pressure of working part, and this also is the essential distinction of the metal frame in the utility model metal frame and the traditional oil sealing.

3,, make that the traditional oil sealing of the volume ratio of internal reservoir grease is bigger, more storing lubricating oil fat because the design that the multi-functional wheel hub oil sealing of the utility model adopts skeleton to expose; Under high temperature condition, lubricating grease is easier to swash and takes off, and guarantees the lubrication system of vehicle bridge; Can produce the interior pressure of 1Mpa simultaneously in the vehicle bridge body, this moment, lip also will bear huge radially tension, and skeleton must be exposed in the oil sealing bottom; Can not be wrapped up by rubber, this is that traditional oil sealing production technology institute is irrealizable.

Claims

1. multi-functional wheel hub oil sealing; Be applied to contain in the vehicle bridge structure of outer connecting ring (5), external spiral lid (6) and working shaft (7); It is characterized in that: said multi-functional wheel hub oil sealing comprises metal frame (1), be positioned at the inner and sealed colloid (2) that closely contact with working shaft (7) of metal frame, be positioned at the metal frame outer side surface and cover the close-fitting external sealed colloid of (6) internal thread (3) and be enclosed within the spring (4) on the sealed colloid (2) with external spiral; The upper end (11) of said metal frame (1) contacts with external spiral lid (6) bottom load, and the bottom surface (12) of said metal frame (1) contacts with outer connecting ring (5) load.

2. multi-functional wheel hub oil sealing according to claim 1 is characterized in that: said external sealed colloid (3) contains the worm structure (31) with external spiral lid (6) screw-thread fit, and the below in interior sealed colloid (2) is provided with two slow secondary lips (21) of pressing.

3. multi-functional wheel hub oil sealing according to claim 1 and 2 is characterized in that: said metal frame (1) is by the steel plate impact briquetting processing of thickness >=2mm, pressure >=20t that its bottom surface (12) can bear.