CN211145349U

CN211145349U - Assembled rolling mill oil seal

Info

Publication number: CN211145349U
Application number: CN201922088574.XU
Authority: CN
Inventors: 徐健; 杨晓敏
Original assignee: Shanghai Jieying Sealing Technology Co ltd
Current assignee: Shanghai Jieying Sealing Technology Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-07-31
Anticipated expiration: 2029-11-27

Abstract

The utility model relates to an assembled rolling mill oil blanket relates to the hydraulic seal spare field, including outer skeleton, inner frame, the oil blanket body and self-tightening coil spring, the oil blanket body centre gripping is fixed inboard at the outer skeleton, and the turn-ups of grease proofing blanket body lip turn over of preventing is respectively installed in oil blanket body both sides supports and fixes self-tightening coil spring's flexible support. To the turn-ups phenomenon that exists in the use of current oil blanket, this rolling mill oil blanket has the difficult turn-ups advantage, can effectively reduce the fault rate of oil blanket in use, reduces the maintenance in order to promote production efficiency.

Description

Assembled rolling mill oil seal

Technical Field

The utility model belongs to the technical field of the hydraulic seal spare and specifically relates to an assembled rolling mill oil blanket is related to.

Background

Oil seals are a common term for seals, simply the seal of lubricating oil. The oil seal is a mechanical element for sealing grease, and separates a part needing lubrication in a transmission part from a force-applying part, so that lubricating oil is prevented from leaking. Static seals and dynamic seals (generally reciprocating) are called oil seals. The framework oil seal is a typical representative of the oil seal, and the oil seal is generally referred to as the framework oil seal. The oil seal generally serves to isolate the components to be lubricated from the external environment, so as not to allow the lubricating oil to leak. The framework acts as a reinforcement for the steel bars inside the concrete member and allows the oil seal to maintain shape and tension.

A present skeleton oil blanket, including the annular metal skeleton and the annular rubber oil seal body of circle, the rubber inboard extends the flexure of rubber material, and the flexure end is provided with the lip, and the flexure outside cover is equipped with from tight coil spring. When the oil blanket was used in the dynamic seal, because lip portion and installation axle butt and the material of flexure are easily compressed, when installation axle along axial displacement, probably because frictional force is great takes the flexure out, the turn-ups's of lip phenomenon appears, makes the oil blanket can't play the sealed effect and influences the normal operating of device simultaneously, if the turn-ups of lip appears, the oil blanket must be dismantled and repack, has reduced machining efficiency.

The above prior art solutions have the following problems: the lip flanging phenomenon easily occurs in the use process of the existing oil seal.

SUMMERY OF THE UTILITY MODEL

To prior art there is the problem that the turn-ups phenomenon takes place for the oil blanket relatively easily, the utility model aims at providing an assembly type rolling mill oil blanket with prevent lip turn-ups function.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

an assembled rolling mill oil seal comprises an outer framework, an oil seal body and a self-tightening spiral spring, wherein the oil seal body comprises a fixing part fixed on the outer framework and a bending part with a sealing function, and an anti-overturning support for preventing the bending part from outwards overturning is arranged on one side, far away from the bending part, of the fixing part.

By adopting the technical scheme, the oil seal body is arranged on the outer framework, the fixed part of the oil seal body is fixed on the outer framework, and the flexible part forms a sealing structure by being abutted against the shaft to prevent grease from leaking; the self-tightening spiral spring sleeved on the outer side of the deflection part is used for hooping the deflection part, so that the lip can be abutted against the shaft to form an oil seal structure; the anti-overturning support can prevent the bending part from overturning when the bending part is driven by friction force to overturn outwards, so that the probability of lip overturning is effectively reduced.

The utility model discloses further set up to: the anti-turnover support is a circular support, and one end of the anti-turnover support, which is far away from the fixing part, is bent towards the bending part and is abutted against the bending part.

By adopting the technical scheme, the annular anti-overturning support forms a supporting structure on one side of the oil seal body, and when the deflection part of the oil seal body has the tendency of moving outwards along the axial direction, the oil seal body can be prevented from being overturned, so that the phenomenon that the deflection part is flanged along with the movement of the shaft is avoided.

The utility model discloses further set up to: and a dustproof lip with a dustproof function is arranged on one side of the anti-turnover support and the bending part attaching part, which is far away from the bending part, and the dustproof lip is deviated to one side, which is far away from the bending part.

Through adopting above-mentioned technical scheme, the dust lip can effectively block external dust and get into the oil blanket region, places the dust and pollutes the oil blanket region, influences the oil blanket effect.

The utility model discloses further set up to: the internal diameter of dust lip is greater than the diameter of installation axle, the edge that the dust lip tip is close to the installation axle has seted up antifriction fillet.

Through adopting above-mentioned technical scheme, the fillet is seted up to the edge of dust lip can be placed the edge and scrape smooth installation axle, can reduce the friction between dust lip and the installation axle simultaneously and reduce and generate heat.

The utility model discloses further set up to: an inner framework is arranged in the outer framework, and the inner framework and the outer framework are matched, clamped and fixed to the fixing portion.

Through adopting above-mentioned technical scheme, set up the inner frame and replace the great easily destroyed oil blanket body partial structure of elasticity, can effectively promote oil blanket overall structure's intensity in fixed oil blanket body, make the oil blanket more difficult to damage increase of service life in the use.

The utility model discloses further set up to: and a flexible support is arranged between the inner framework and the oil seal body and is abutted against the oil seal body.

Through adopting above-mentioned technical scheme, the flexible support laminating is kept away from one side of exoskeleton supporting part at the oil blanket body, works as lip and axle butt, deflection portion pressurized expansion, flexible support and deflection portion laminating part can provide the power that makes the deflection portion shrink, make the lip can with axle in close contact with, follow shaft class part pivoted operating mode in some sealing washers and probably receive centrifugal force to influence unable effective locking deflection portion, flexible support can continue to keep the close fit of lip and axle this moment.

The utility model discloses further set up to: and one end of the flexible support, which is far away from the fixed part, is provided with a spring groove for clamping the self-tightening spiral spring.

By adopting the technical scheme, the self-tightening spring is clamped on the flexible support, so that the self-tightening spring is fixed, and the self-tightening spiral spring is not easy to fall off.

The utility model discloses further set up to: and the outer side contour edge of the outer framework is provided with a fillet.

By adopting the technical scheme, the rolling mill oil seal can be more convenient to install in the hole structure.

To sum up, the utility model discloses a beneficial technological effect does:

the anti-turnover support is arranged on one side, close to the supporting part, of the oil seal body, so that the lip flanging phenomenon can be avoided to a certain extent, the normal use of the oil seal is ensured, the fault rate of the oil seal in use is reduced, and the production efficiency is improved to a certain extent;

through set up the flexible support at one side that the oil blanket body is close to the inner frame, the flexible support can prevent the expansion of flexion and then provides certain pretightning force for between lip and the axle, installs the self-tightening coil spring at the tip of flexible support, further ensures the cooperation between lip and the axle, ensures the oil blanket reliability of oil blanket.

Drawings

FIG. 1 is a schematic view of the external structure of the oil seal of the rolling mill;

fig. 2 is a partial sectional view taken along a-a in fig. 1.

Reference numerals: 1. an outer skeleton; 2. an inner skeleton; 3. an oil seal body; 4. a fixed part; 5. a flexure; 6. anti-overturning supports; 7. a flexible support; 8. a self-tightening coil spring; 11. a support portion; 12. a clamping portion; 13. installing a fillet; 51. a lip; 61. a dust lip; 62. friction-reducing round corners; 71. and a spring groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses an assembled rolling mill oil blanket, this assembled rolling mill oil blanket is annular sealing member.

The internal structure of the oil seal structure refers to fig. 2, and the oil seal structure comprises an oil seal body 3, an outer framework 1, an inner framework 2 and a self-tightening spiral spring 8, wherein a flexible support 7 and an anti-overturn support 6 are respectively arranged on two sides of the oil seal body 3.

The outer framework 1 is an annular metal framework of an L-type structure, the outer framework 1 comprises a supporting portion 11 and a clamping portion 12, the inner framework 2 is an annular metal framework with a rectangular cross section and is matched with the supporting portion 11 of the outer framework 1 to clamp the oil seal body 3, the oil seal body 3 is an annular rubber oil seal piece, two ends of the oil seal body 3 are respectively provided with a fixing portion 4 and a deflection portion 5, the fixing portion 4 is clamped and fixed between the inner framework 2 and the clamping portion 12 of the outer framework 1, the deflection portion 5 deflects towards one side far away from the clamping portion 12, and the included angle between the deflection portion 5 and the fixing portion 4 is larger than 90.

A lip 51 having a sealing function is integrally provided at one end of the flexure 5 away from the fixing portion 4, and the lip 51 is in contact with the mounting shaft, and the diameter of the lip 51 is smaller than that of the mounting shaft. The included angle between the flexible part 5 and the fixed part 4 is more than 90. In order to ensure that the lip 51 on the flexing portion 5 can effectively abut against the mounting shaft; the diameter of the lip 51 is smaller than that of the mounting shaft to ensure the lip 51 and the mounting shaft to tightly abut against each other and ensure the sealing reliability.

The flexible support 7 and the anti-overturning support 6 are respectively arranged on two sides of the oil seal body 3.

The anti-overturning support 6 made of annular metal materials is clamped and fixed between the oil seal body 3 and the clamping part 12, the outline of the anti-overturning support 6 is attached to the oil seal body 3, resistance is provided when the bending part 5 bends towards the direction of the supporting plate through the anti-overturning support 6, and the phenomenon of port overturning of the oil seal in use is avoided to a certain extent.

A flexible support 7 made of annular metal is clamped and fixed between the oil seal body 3 and the inner framework 2, and one end of the flexible support 7, which is close to the supporting part 11, is bent towards the side of the oil seal body 3 to form a right-angled structure, so that the fixing structure of the flexible support 7 is more reliable; the flexible support 7 can provide resistance when the bending part 5 bends towards the inner framework 2, can enhance the fit tightness between the bending part 5 and the shaft workpiece, one end of the flexible support 7 far away from the inner framework 2 is bent into a spring groove 71 used for clamping the self-tightening spiral spring 8, and the self-tightening force is further provided for the bending part 5 through the self-tightening spiral spring 8, so that the reliability of oil sealing is ensured.

In order to prevent dust from polluting the lip 51 part of the oil seal body 3 in the use process of the oil seal, one side of the anti-overturning support 6, which is far away from the oil seal body 3, is integrally provided with an annular dust-proof lip 61, and the dust-proof lip 61 can isolate dust in a working environment to a certain extent and plays a role in protecting oil seal components; the diameter of dust lip 61 slightly is greater than the diameter of installation axle, and the inboard edge of dust lip 61 is seted up for reducing friction fillet 62, and reducing friction fillet 62 alleviates the friction between dust lip 61 and the axle and reduces the produced heat of friction.

Furthermore, the edge on the outer contour of the outer framework 1 is provided with a mounting fillet 13 so as to facilitate the mounting of the rolling mill oil seal.

The implementation principle of the embodiment is as follows: before installation, lubricating grease is coated on the inner ring of the rolling mill oil seal to avoid dry friction between the shaft and the lip 51, the shaft is inserted into the oil seal, the deflection part 5 is pressed to expand, and at the moment, the flexible support 7 and the self-tightening spiral spring 8 provide force for preventing the deflection part 5 from expanding, so that the lip 51 is tightly attached to the shaft to ensure the effect of the oil seal, and meanwhile, the double-layer locking is not easy to lose efficacy; meanwhile, the dust-proof lip 61 can isolate the lip 51 from the external environment, so that an effective dust-proof function is achieved; when the shaft moves axially relative to the oil seal, the anti-flanging support 6 can prevent the bending part 5 from bending outwards, so that the effect of preventing the flanging of the lip 51 is achieved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an assembled rolling mill oil blanket, includes exoskeleton (1), oil seal body (3) and self-tightening coil spring (8), its characterized in that: the oil seal body (3) comprises a fixing part (4) fixed on the exoskeleton (1) and a flexing part (5) with a sealing function, wherein an overturn-preventing support (6) for preventing the flexing part (5) from turning outwards is arranged on one side, far away from the flexing part (5), of the fixing part (4).

2. The fabricated mill oil seal of claim 1, wherein: the anti-overturning support (6) is a circular support, and one end, far away from the fixing part (4), of the anti-overturning support (6) is bent towards the bending part (5) and is abutted against the bending part (5).

3. The fabricated mill oil seal of claim 2, wherein: and a dust lip (61) with a dust-proof function is arranged on one side, away from the bending part (5), of the joint part of the anti-turnover support (6) and the bending part (5), and the dust lip (61) is deviated to one side, away from the bending part (5).

4. A fabricated mill oil seal according to claim 3, wherein: the internal diameter of dust lip (61) is greater than the diameter of installation axle, antifriction fillet (62) have been seted up to the edge that dust lip (61) tip is close to the installation axle.

5. The fabricated mill oil seal of claim 1, wherein: be provided with inner frame (2) in exoskeleton (1), inner frame (2) are installed in exoskeleton (1) and with exoskeleton (1) cooperate the centre gripping fixed part (4).

6. The fabricated mill oil seal of claim 5, wherein: and a flexible support (7) is arranged between the inner framework (2) and the oil seal body (3), and the flexible support (7) is abutted to the oil seal body (3).

7. The fabricated mill oil seal of claim 6, wherein: and one end of the flexible support (7) far away from the fixed part (4) is provided with a spring groove (71) for clamping the self-tightening spiral spring (8).

8. The fabricated mill oil seal of claim 1, wherein: and an installation fillet (13) is arranged on the outer side contour edge of the outer framework (1).