CN207814431U - A kind of mesohigh rotation combination oil sealing - Google Patents

Abstract

The utility model discloses a kind of mesohigh rotation combination oil sealings, its key points of the technical solution are that：Including being tightly attached to the outer skeleton turned in part cavity and the inner frame being sheathed on shaft member outer wall, it is provided with rubbery sealed body between outer skeleton and inner frame, outer skeleton includes dermoskeleton frame body and is set to the outer skeleton accessory body of dermoskeleton frame body lower end, inner frame includes in-seam frame body and the inner frame accessory body for being set to in-seam frame body upper end, rubbery sealed body includes main lip and the secondary lip that is set on main lip one end, secondary lip is in the shape of the letter V setting close to the side of inner frame, side of the secondary lip far from inner frame is provided with regulating tank, secondary lip is provided with inner groovy above abutment end, spring is arranged in regulating tank；By outer wall be in the shape of the letter V setting secondary lip and internal diameter and abutted position that the spring that is sheathed in regulating tank enables rubbery sealed body to adjust secondary lip when being caused internal diameter to increase by axis body bounce, so that it is guaranteed that the service life of rubbery sealed body.

Description

A kind of mesohigh rotation combination oil sealing

Technical field

The utility model is related to oil seal technique fields, more specifically, it relates to a kind of mesohigh rotation combination oil sealing.

Background technology

Currently, various mechanical equipment market developments are rapid, and for some mechanical equipments with rotation work, lubrication The use of oil is essential, and for the safe handling of lubricating oil, the uses of various oil sealings be also it is essential, In, combination oil seal is the most common type in various oil sealings, with ideal sealing and dustproof effect, and assembles and is easy, makes The advantages that with long lifespan, still in the workplace of various high intensity, is susceptible between all parts of combination oil seal and oozes The case where leakage, causes the Market Feedback in the failure oil leak of various mechanical equipment combination oil seals also to remain high always, cannot such as solve Certainly, huge economic loss can be not only caused, but also will influence whether competitiveness of China's mechanical equipment in international market.

As shown in Figure 1, in the prior art, combination oil seal generally comprises the inner oil seal 4 being sheathed on 1 outer wall of axis body and set Outer oil seal 3 on 2 inner wall of cavity passes through the effect of 4 interference fit seal of outer oil seal 3 and inner oil seal；But work as machinery When overflow works, it is easy to cause the bounce of axis body 2 to increase inner oil seal 4, combination oil seal is caused to fail in lifetime.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of mesohigh rotation combination oil Envelope has the effect of still being able to keep sealing when mechanical equipment overload work causes combination oil seal bounce to increase.

To achieve the above object, the utility model provides following technical solution：

A kind of mesohigh rotation combination oil sealing includes for being tightly attached to the outer skeleton turned in part cavity and being sheathed on axis Inner frame on part outer wall, is provided with rubbery sealed body between the outer skeleton and inner frame, the outer skeleton includes being close to In on cavity inner wall dermoskeleton frame body and be set to dermoskeleton frame body lower end and with the vertically disposed outer skeleton pair of outer skeleton Body, the inner frame include the in-seam frame body being sheathed on axis body outer wall and are set to in-seam frame body upper end and and in-seam The inner frame accessory body of frame body outer wall vertical setting, the rubbery sealed body includes that upper surface and the lower surface of outer skeleton accessory body are tight The main lip of closely connected conjunction and it is set to secondary lip of the main lip on one end of inner frame, the pair lip is in close to the side of inner frame V-shaped is arranged, and the side of the pair lip far from inner frame is provided with the regulating tank of u-shaped shape setting, and the pair lip is in abutting End top is provided with inner groovy, and spring is arranged in the regulating tank.

So set, by outer skeleton and and gap of the inner frame support rubbery sealed body between axis body and cavity carry out oil Envelope, when mechanical equipment overloads work, the bounce of axis body can be transmitted to by inner frame on rubbery sealed body, will not to inner frame with And outer skeleton impacts, but the bounce of axis body can still result in the increase of rubbery sealed body internal diameter, when the internal diameter of rubbery sealed body When increase causes oil sealing effect to decay, the spring being sheathed in regulating tank can inwardly bounce back so that secondary lip can be in the work of spring It is bonded with inner frame outer wall under firmly, to achieve the effect that rubbery sealed body keeps oil sealing, and is ground at secondary lip abutting again When damaging serious, spring can be offset up along regulating tank, and spring moves up the active force of secondary lip so that inner groovy upper end can be with Inner frame outer wall abuts, so that rubbery sealed body can continue to abut sealing with inner frame, reaches and increases combination oil seal The effect of service life, outer skeleton accessory body can play rubbery sealed body certain supporting role, prevent main lip compressive deformation, Ensure the service life of rubbery sealed body.

Further setting：The thickness of the pair lip lower end is bigger than the thickness of upper end, and regulating tank upper end is inclined outward Setting, the pair lip lower end are arranged with inner frame outer wall vertical.

So set, the thickness of secondary lip lower end makes greatly the intensity of secondary lip lower end be more than secondary lip upper end than the thickness of upper end Intensity, when the position abrasion that secondary lip is abutted with inner frame body outer wall is excessive, the larger lower end of secondary lip intensity is not susceptible to become Shape so that spring is merely able to carry out crimp to secondary lip upper end, it is ensured that spring is merely able to offset up, so that it is guaranteed that secondary lip goes out When now wearing, spring makes inner groovy upper end abut sealing again with inner frame outer wall to squeezing secondary lip.

Further setting：The inner frame inner wall is interference fitted with axis body, and the inner wall lower end chamfer of the inner frame is set It sets.

So set, can be ensured between inner frame and axis body not by the way of interference fit between inner frame and axis body It will appear gap, be convenient for axis body being inserted into in-seam frame body in the setting of interior inboard wall of skeleton lower end chamfer.

Further setting：The diameter of the main lip outer wall is consistent with the diameter of dermoskeleton frame body outer wall to be arranged, described The rounded corner setting of main lip outer wall lower end.

So set, convenient for rubbery sealed body is embedded in cavity.

Further setting：The dermoskeleton frame body is arranged with outer skeleton accessory body connecting pin rounded corner, on the main lip outer wall End is provided with protrusion, and the protrusion is embedded in rounded corners.

So set, increase the contact area of outer skeleton and rubbery sealed body, and in outer skeleton main body and outer skeleton accessory body Connecting pin rounded corner setting and the protrusion being embedded in rounded corners in the setting of lip outer wall upper end enable to outer skeleton and rubber Connection between glue seal is even closer, further ensures that the leakproofness between outer skeleton and rubbery sealed body.

Further setting：The both ends of the spring is both provided with the shackle of mutually clamping setting.

So set, spring head and the tail both ends can be linked together using shackle, adjusted so as to which spring pocket to be set to It saves in slot, and the restoring force of spring acts secondary lip so that secondary lip can mutually be abutted against with inner frame.

Further setting：It is provided with the resigning ring being recessed inwardly on the surface of the outer skeleton accessory body.

So set, in the prior art, the installation of combination oil seal is usually to be tapped by hammer, in outer skeleton accessory body Surface on setting resigning ring can enhance the structural strength of outer skeleton so that outer skeleton is unlikely to deform.

Further setting：The annular groove being arranged for the clamping of resigning ring is provided with below regulating tank on the secondary lip.

So set, preventing rubbery sealed body from falling off from outer skeleton, it is ensured that rubbery sealed body it is safe to use.

Further setting：The pair lip upper end abuts setting, the pair lip and inner frame master with inner frame accessory body lower surface A circle dirt collection chamber is formed between wall and inner frame accessory body lower surface in vitro.

So set, when combination oil seal penetrates into some atmospheric dusts in long-term work or oozes out some greasy dirts, utilize These atmospheric dusts and greasy dirt can be collected by dirt collection chamber, and entering inside cavity to avoid atmospheric dust makes mechanical equipment At damage, and greasy dirt is avoided to be expelled directly out outside cavity, it is ensured that the whole cleaning of cavity.

By using above-mentioned technical proposal, the utility model is compared compared with the prior art：It is in the shape of the letter V setting by outer wall Secondary lip and the spring being sheathed in regulating tank enable rubbery sealed body to be adjusted when being caused internal diameter to increase by axis body bounce The internal diameter and abutted position of whole pair lip, so that it is guaranteed that the service life of rubbery sealed body.

Description of the drawings

Fig. 1 is the structural schematic diagram of combination oil seal in the prior art；

Fig. 2 is the diagrammatic cross-section of mesohigh rotation combination oil sealing；

Fig. 3 is the structural schematic diagram of the spring of mesohigh rotation combination oil sealing.

In figure：1, axis body；2, cavity；3, outer oil seal；4, inner oil seal；5, rubbery sealed body；51, main lip；511, raised； 52, secondary lip；53, inner groovy；54, annular groove；55, dirt collection chamber；56, regulating tank；6, outer skeleton；61, dermoskeleton frame body；62, outer Skeleton accessory body；63, resigning ring；7, spring；71, shackle；8, inner frame；81, in-seam frame body；82, inner frame accessory body.

Specific implementation mode

Mesohigh is described further with rotation combination oil sealing referring to figs. 1 to Fig. 3.

A kind of mesohigh rotation combination oil sealing, as shown in Fig. 2, including be sheathed on 2 inner wall of cavity and with 2 inner wall of cavity The outer skeleton 6 of interference fit and the inner frame 8 for being sheathed on 1 outer wall of axis body and being interference fitted with 1 outer wall of axis body, outer skeleton 6 The rubbery sealed body 5 for sealing gap between inner frame 8 and outer skeleton 6, rubbery sealed body 5 are provided between inner frame 8 On be arranged with for adjust between rubbery sealed body 5 and inner frame 8 contradict sealing station spring 7.

As shown in Fig. 2, outer skeleton 6 includes the dermoskeleton frame body 61 being interference fitted with 2 inner wall of cavity and is set to dermoskeleton 61 lower end of frame body and it is vertically arranged the outer skeleton accessory body 62 for beaing installation for hammer, dermoskeleton frame body with 2 inner wall of cavity 61, inner frame 8 include the in-seam frame body 81 being interference fitted with 1 outer wall of axis body and be set to 81 upper end of in-seam frame body and with The inner frame accessory body 82 for being used to support rubbery sealed body 5 is arranged in 1 outer wall vertical of axis body；Wherein, dermoskeleton frame body 61 and dermoskeleton The connecting pin rounded corner of frame accessory body 62 is arranged, and is provided with and is recessed inwardly for enhancing outer skeleton pair on the surface of outer skeleton accessory body 62 The resigning ring 63 of 62 structural strength of body, the 81 lower end chamfer setting of in-seam frame body.

As shown in Fig. 2, the main lip 51 that lower surface of the rubbery sealed body 5 including upper surface and outer skeleton accessory body 62 fits closely And it is set to main lip 51 and is in the shape of the letter V on one end of inner frame 8 and be arranged and abutted with 81 outer wall of in-seam frame body setting Secondary lip 52, secondary lip 52 are in the shape of the letter V setting close to the side of inner frame 8, and side of the secondary lip 52 far from inner frame 8 is provided in U-shaped The regulating tank 56 of shape setting, secondary lip 52 are provided with the inner groovy for providing the second conflict sealing station above abutment end 53, spring 7 is sheathed in regulating tank 56, and 56 lower section of regulating tank is provided with the annular groove being clamped for resigning ring 63 on secondary lip 52 54；Wherein, the thickness of 52 lower end of secondary lip is bigger than the thickness of upper end, the inclined outside setting in 56 upper end of regulating tank, under regulating tank 56 End is arranged with 8 outer wall vertical of inner frame, and the setting of 51 outer wall upper end of main lip is embedded in the protrusion 511 in 6 rounded corners of outer skeleton, secondary 52 upper end of lip abuts setting, secondary lip 52 and 81 outer wall of in-seam frame body and inner frame accessory body 82 with 82 lower surface of inner frame accessory body A circle dirt collection chamber 55 is formed between lower surface.

As shown in figure 3,7 both ends of spring are both provided with the shackle 71 for being clamped 7 head and the tail both ends of spring.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims (9)

1. a kind of mesohigh rotation combination oil sealing, it is characterised in that：Turn part cavity including being used to be tightly attached to（2）Interior outer skeleton （6）And it is sheathed on the inner frame on shaft member outer wall（8）, the outer skeleton（6）And inner frame（8）Between to be provided with rubber close Feng Ti（5）, the outer skeleton（6）Including being tightly attached to cavity（2）Dermoskeleton frame body on inner wall（61）And it is set to outer skeleton Main body（61）Lower end and with outer skeleton（6）Vertically disposed outer skeleton accessory body（62）, the inner frame（8）Including being sheathed on axis body （1）In-seam frame body on outer wall（81）And it is set to in-seam frame body（81）Upper end and with in-seam frame body（81）Outer wall hangs down The inner frame accessory body being directly arranged（82）, the rubbery sealed body（5）Including upper surface and outer skeleton accessory body（62）Lower surface it is tight The main lip of closely connected conjunction（51）And it is set to main lip（51）Close to inner frame（8）One end on secondary lip（52）, the pair lip （52）Close to inner frame（8）Side be in the shape of the letter V setting, the pair lip（52）Far from inner frame（8）Side be provided in U-shaped The regulating tank of shape setting（56）, the pair lip（52）Inner groovy is provided with above abutment end（53）, the regulating tank（56） Inside it is arranged with spring（7）.

2. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：The pair lip（52）Lower end Thickness it is bigger than the thickness of upper end, the regulating tank（56）The inclined outside setting in upper end, the pair lip（52）Lower end and in-seam Frame（8）Outer wall vertical is arranged.

3. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：The inner frame（8）It is interior Wall and axis body（1）Interference fit, the inner frame（8）The setting of inner wall lower end chamfer.

4. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：The main lip（51）Outer wall Diameter and dermoskeleton frame body（61）The diameter of outer wall is unanimously arranged, the main lip（51）The rounded corner setting of outer wall lower end.

5. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：The dermoskeleton frame body （61）With outer skeleton accessory body（62）Connecting pin rounded corner setting, the main lip（51）Outer wall upper end is provided with protrusion（511）, described Protrusion（511）It is embedded in rounded corners.

6. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：The spring（7）Both ends It is both provided with the shackle of mutually clamping setting（71）.

7. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：In the outer skeleton accessory body （62）Surface on be provided with the resigning ring being recessed inwardly（63）.

8. a kind of mesohigh rotation combination oil sealing according to claim 7, it is characterised in that：In the secondary lip（52）On In regulating tank（56）Lower section is provided with for resigning ring（63）It is clamped the annular groove of setting（54）.

9. a kind of mesohigh rotation combination oil sealing according to claim 1, it is characterised in that：The pair lip（52）Upper end With inner frame accessory body（82）Lower surface abuts setting, the pair lip（52）With in-seam frame body（81）Outer wall and inner frame accessory body （82）A circle dirt collection chamber is formed between lower surface（55）.