CN206054720U - A kind of inside injection grease seal ring in adjustable sealing gap - Google Patents
A kind of inside injection grease seal ring in adjustable sealing gap Download PDFInfo
- Publication number
- CN206054720U CN206054720U CN201621091512.4U CN201621091512U CN206054720U CN 206054720 U CN206054720 U CN 206054720U CN 201621091512 U CN201621091512 U CN 201621091512U CN 206054720 U CN206054720 U CN 206054720U
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- annular base
- ring
- parabola
- wall
- hollow
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Abstract
This utility model is related to a kind of inside injection grease seal ring in adjustable sealing gap.Its technical scheme is：The entirety that the sealing ring is made up of hollow O type ring (1) and annular base (2), greasing through hole (3) is provided with to the cavity of hollow O type ring (1) in the outer wall of annular base (2), the outer wall of annular base (2) is provided with two alignment pins (4).The cross sectional shape of hollow O type ring (1) is the approximate pipe composition with the sealing ring centrage as axis of symmetry, and the approximate pipe is surrounded with approximately cylindrical by the approximate inner circle of concentric.The cross sectional shape of the annular base (2) is the rectangle composition with the sealing ring centrage as axis of symmetry.The greasing through hole (3) is that flaring type parabola, disjunctor stopple of the paraboloid after cutting for greasing through hole (3) are cut into inwardly and on the outside of the parabola along aperture parabola.The characteristics of this utility model has long service life, efficiency high, highly reliable, low friction, high frequency sound and can adjust sealing property.
Description
Technical field
This utility model belongs to sealing ring technical field.The inside injection oils and fatss in specifically related to a kind of adjustable sealing gap
Sealing ring.
Background technology
Hydraulic cylinder is quite varied in technical field of hydraulic pressure application, no matter in small-sized hydraulic system, or super-huge, heavily loaded
Lotus hydraulic system is used widely.To make hydraulic cylinder normal work and ensureing certain volumetric efficiency, typically it is mounted on close
Seal, to prevent hydraulic fluid leak.According to planform, sealing ring is divided into O-shaped, Y types, combination sealing etc..Sealing ring loads
Oil liquid leakage can be effectively prevented in hydraulic cylinder, while keeping low-frictional force, response speed also reach job requirement.
Sealing ring in use, as the working time extends, weares and teares increasing, and leakage rate also gradually increases, liquid
The volumetric efficiency of cylinder pressure is also reduced, and uses certain hour, it is impossible to adjust the sealing property of sealing ring, and sealing ring must be changed,
Otherwise hydraulic cylinder cannot work.When large-scale or super-huge hydraulic cylinder will change sealing ring, it is necessary to crane gear by cylinder cap, work
The weights such as stopper rod are sling, and need the long period complete, and assemble and disassemble high cost.
The content of the invention
This utility model is intended to overcome above-mentioned technological deficiency, it is therefore an objective to provide a kind of long service life, efficiency high, reliability
By force, low friction, high frequency sound, can adjust sealing property adjustable sealing gap inside injection grease seal ring.
For achieving the above object, the technical solution adopted in the utility model is：The sealing ring is by hollow O type ring and ring
The entirety of shape base composition, the outer wall of hollow O type ring are close to the inwall of annular base.Annular base outer wall to hollow O type
The cavity of ring is provided with greasing through hole, and the outer wall of annular base is provided with two alignment pins.
The cross sectional shape of hollow O type ring is the approximate pipe composition with the sealing ring centrage as axis of symmetry, described near
It is by with O like pipe1Approximate inner circle for the center of circle and with O1Approximate cylindrical for concentric is surrounded.The approximate inner circle is with R1
Inner circle and the string of the inner circle for radius is formed by connecting, the chordal distance center of circle O1Apart from h1=0.7~0.8R1；It is described approximate
Cylindrical is with R2For the cylindrical of radius and with R1Tangent line for the inner circle of radius is formed by connecting, and the length of tangent degree is b1=2R2-
(4 ~ 8) mm, the two ends of the tangent line and cylindrical connection, tangent line two ends are with cylindrical line perpendicular to the tangent line.The tangent line
The as plain line of hollow O type ring outer wall, the string of the inner circle are parallel with the tangent line, between the string of the inner circle and the tangent line
Apart from h0=R1-h1。
The cross sectional shape of the annular base is the rectangle composition with the sealing ring centrage as axis of symmetry.The annular
The width B=2R of base2, the thickness h of the annular base2=R2-R1=(2 ~ 4) mm, the inwall radius of the annular base are equal to
The exterior radius of hollow O type ring.
The orifice shapes of the greasing through hole are parabola, and parabolical axis of symmetry is second-class with the annular base outer wall
Separated time overlaps, in the parabola A/F b of the annular base outer wall2=0.3 ~ 0.4B, in the throwing of the annular base outer wall
Thing line horizontal plane projection along axis of symmetry length L=0.3 ~ 0.4B.Greasing through hole is inwardly and along described along aperture parabola
Flaring type parabola is cut on the outside of parabola, paraboloidal inclined angle alpha=15 ~ 25 ° of flaring type, the gap width after cutting are little
In 0.01mm.Disjunctor stopple of the paraboloid formed after cutting for greasing through hole, outer surface and the annular of the disjunctor stopple
The outer wall of base is linked as entirety.
Described two alignment pins are arranged in the bisecting line of the annular base outer ring surface, and two alignment pins are located at greasing
The both sides of through hole；Described two alignment pins are identical：Highly it is 1 ~ 2mm, a diameter of 2 ~ 3mm.
Compared to the prior art there is advantages below due to adopting above-mentioned technical proposal, this utility model：
(1) outer ring surface of annular base of the present utility model is provided with greasing through hole, greasing through hole be along aperture parabola to
It is interior and flaring type parabola, i.e. flaring type parabola are cut on the outside of the parabola are made up of the parabola of variable cross-section,
Inclined angle alpha=15 ~ 25 ° of variable cross-section；Disjunctor stopple of the paraboloid formed after cutting for greasing through hole, the disjunctor stopple
Entirety is linked as with the outer ring surface of annular base；Due to the section of disjunctor stopple it is inwardly increasing, therefore good seal performance.
(2) this utility model injects oils and fatss to the cavity of hollow O type ring by greasing through hole, by the oils and fatss for adjusting injection
Amount, increases or decreases outward expansionary force of the oils and fatss to hollow O type sealing ring, so as to adjust seal degree, long service life.
(3) outer wall of annular base of the present utility model is touched with seal groove bottom connection, can prevent from reversing, and strengthens stable
Property, reliability height extends the replacement cycle.
(4) this utility model be respectively connected with greasing through hole two ends cylinder alignment pin, the position of fixed seal ring,
Reliability is high.
Therefore, this utility model has long service life, efficiency high, highly reliable, low friction, high frequency sound and can adjust close
The characteristics of sealing property.
Description of the drawings
Fig. 1 is a kind of structural representation of the present utility model；
Cross-sectional schematics of the Fig. 2 for Fig. 1；
Fig. 3 is the cross-sectional schematic of hollow o-ring 1 in Fig. 1；
Elevational schematic views of the Fig. 4 for Fig. 1.
Specific embodiment
With reference to the accompanying drawings and detailed description this utility model is described further, not this utility model is protected
The restriction of shield scope.
Embodiment 1
A kind of inside injection grease seal ring in adjustable sealing gap.As depicted in figs. 1 and 2, the sealing ring be by
The entirety of hollow O type ring 1 and the composition of annular base 2, the outer wall of hollow O type ring 1 are close to the inwall of annular base 2.At annular bottom
The outer wall of seat 2 is provided with greasing through hole 3 to the cavity of hollow O type ring 1, and the outer wall of annular base 2 is provided with two alignment pins 4.
As shown in figure 3, the cross sectional shape of hollow O type ring 1 is the approximate pipe with the sealing ring centrage as axis of symmetry
Composition, the approximate pipe is by with O1Approximate inner circle for the center of circle and with O1Approximate cylindrical for concentric is surrounded.It is described approximate
Inner circle is with R1Inner circle and the string of the inner circle for radius is formed by connecting, the chordal distance center of circle O1Apart from h1=0.7~
0.8R1；It is described it is approximate it is cylindrical be with R2For the cylindrical of radius and with R1Tangent line for the inner circle of radius is formed by connecting, the tangent line
Length be b1=2R2- (4 ~ 8) mm, the two ends of the tangent line and cylindrical connection, tangent line two ends are with cylindrical line perpendicular to described
Tangent line.The tangent line is the plain line of 1 outer wall of hollow O type ring, and the string of the inner circle is parallel with the tangent line, the string of the inner circle
With between the tangent line apart from h0=R1-h1。
As depicted in figs. 1 and 2, the cross sectional shape of the annular base 2 is with the sealing ring centrage as axis of symmetry
Rectangle is constituted.The width B=2R of the annular base 22, the thickness h of the annular base 22=R2-R1=(2 ~ 4) mm, the annular
The inwall radius of base 2 is equal to the exterior radius of hollow O type ring 1.
As shown in Figure 1, Figure 2 and Figure 4, the orifice shapes of the greasing through hole 3 are parabola, parabolical axis of symmetry and institute
The bisecting line for stating 2 outer wall of annular base overlaps, in the parabola A/F b of 2 outer wall of the annular base2=0.3~
0.35B, 2 outer wall of the annular base parabola horizontal plane projection along axis of symmetry length L=0.3 ~ 0.35B.Greasing
Through hole 3 is that flaring type parabola, the solid line parabola table of Fig. 4 are cut into inwardly and on the outside of the parabola along aperture parabola
Show the aperture of 2 outer wall of annular base, the dotted line parabola of Fig. 4 represents the aperture of 1 cavity face of hollow O type ring.The solid line and institute
State the face between dotted line and represent projection of the flaring type parabola in horizontal plane, paraboloidal inclined angle alpha=15 ~ 20 ° of flaring type,
Gap width after cutting is less than 0.01mm.Disjunctor stopple of the paraboloid formed after cutting for greasing through hole 3, the disjunctor
The outer surface of stopple is linked as entirety with the outer wall of annular base 2.
As shown in Figure 1, Figure 2 and Figure 4, described two alignment pins 4 are arranged on the bisecting line of 2 outer ring surface of the annular base
On, two alignment pins 4 are located at the both sides of greasing through hole 3；Described two alignment pins 4 are identical：It is highly 1 ~ 2mm, a diameter of 2 ~
3mm。
Embodiment 2
A kind of inside injection grease seal ring in adjustable sealing gap.In addition to following technical parameters, remaining same embodiment
1。
Paraboloidal inclined angle alpha=20 ° ~ 25 ° of the flaring type；
In the parabola A/F b of 2 outer wall of the annular base2=0.35 ~ 0.4B, in 2 outer wall of the annular base
Parabola horizontal plane projection along axis of symmetry length L=0.35 ~ 0.4B.
Compared to the prior art this specific embodiment has advantages below：
(1) outer ring surface of the annular base 2 of this specific embodiment is provided with greasing through hole 3, and greasing through hole 3 is along aperture
Parabola is inwardly and flaring type parabola, i.e. flaring type parabola are cut on the outside of the parabola is by the parabolic of variable cross-section
Line is constituted, inclined angle alpha=15 ~ 25 ° of variable cross-section；Disjunctor stopple of the paraboloid formed after cutting for greasing through hole 3, it is described
Disjunctor stopple is linked as entirety with the outer ring surface of annular base 2；Due to the section of disjunctor stopple it is inwardly increasing, in hollow O type
In the cavity of ring 1 after injection oils and fatss, the seal performance of pressure effect internally can be good.
(2) this specific embodiment injects oils and fatss to the cavity of hollow O type ring 1 by greasing through hole 3, by adjusting injection
Oil quantity, increase or decrease outward expansionary force of the oils and fatss to hollow O type sealing ring 1, so as to adjust seal degree, service life
It is long.
(3) outer wall of the annular base 2 of this specific embodiment is touched with seal groove bottom connection, can be prevented from reversing, be strengthened
Stability, reliability are high, extend the replacement cycle.
(4) this specific embodiment is respectively connected with the alignment pin 4 of cylinder, fixed seal ring at 3 two ends of greasing through hole
Position, reliability is high.
Claims (2)
1. grease seal ring is injected in a kind of inside in adjustable sealing gap, it is characterised in that the sealing ring is by hollow O type
The entirety that ring (1) and annular base (2) are constituted, the outer wall of hollow O type ring (1) are close to the inwall of annular base (2)；At annular bottom
The outer wall of seat (2) is provided with greasing through hole (3) to the cavity of hollow O type ring (1), and the outer wall of annular base (2) is provided with two positioning
Pin (4)；
The cross sectional shape of hollow O type ring (1) is the approximate pipe composition with the sealing ring centrage as axis of symmetry, described approximate
Pipe is by with O1Approximate inner circle for the center of circle and with O1Approximate cylindrical for concentric is surrounded；The approximate inner circle is with R1For
The inner circle of radius is formed by connecting with the string of the inner circle, the chordal distance center of circle O1Apart from h1=0.7~0.8R1；It is described approximate outer
Circle is with R2For the cylindrical of radius and with R1Tangent line for the inner circle of radius is formed by connecting, and the length of tangent degree is b1=2R2-(4
~ 8) mm, the two ends of the tangent line and cylindrical connection, tangent line two ends are with cylindrical line perpendicular to the tangent line；The tangent line is
For the plain line of hollow O type ring (1) outer wall, the string of the inner circle is parallel with the tangent line, between the string of the inner circle and the tangent line
Apart from h0=R1-h1；
The cross sectional shape of the annular base (2) is the rectangle composition with the sealing ring centrage as axis of symmetry；The annular
The width B=2R of base (2)2, the thickness h of the annular base (2)2=R2-R1=(2 ~ 4) mm, the inwall of the annular base (2)
Radius is equal to the exterior radius of hollow O type ring (1)；
The orifice shapes of the greasing through hole (3) be parabola, parabolical axis of symmetry and the two of the annular base (2) outer wall
Bisector overlaps, in the parabola A/F b of the annular base (2) outer wall2=0.3 ~ 0.4B, in the annular base (2)
The parabola of outer wall horizontal plane projection along axis of symmetry length L=0.3 ~ 0.4B；Greasing through hole (3) is along aperture parabola
It is cut into inwardly and on the outside of the parabola flaring type parabola, paraboloidal inclined angle alpha=15 ~ 25 ° of flaring type, after cutting
Gap width be less than 0.01mm；Disjunctor stopple of the paraboloid formed after cutting for greasing through hole (3), the disjunctor stopple
The outer wall of outer surface and annular base (2) be linked as entirety.
2. grease seal ring is injected in the inside in the adjustable sealing gap according to claims 1, it is characterised in that described
Two alignment pins (4) are arranged in the bisecting line of the annular base (2) outer ring surface, and two alignment pins (4) are logical positioned at greasing
The both sides in hole (3)；Described two alignment pins (4) are identical：Highly it is 1 ~ 2mm, a diameter of 2 ~ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091512.4U CN206054720U (en) | 2016-09-29 | 2016-09-29 | A kind of inside injection grease seal ring in adjustable sealing gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621091512.4U CN206054720U (en) | 2016-09-29 | 2016-09-29 | A kind of inside injection grease seal ring in adjustable sealing gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206054720U true CN206054720U (en) | 2017-03-29 |
Family
ID=58366463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621091512.4U Withdrawn - After Issue CN206054720U (en) | 2016-09-29 | 2016-09-29 | A kind of inside injection grease seal ring in adjustable sealing gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206054720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246910A (en) * | 2016-09-29 | 2016-12-21 | 武汉科技大学 | A kind of internal adjustable dense seal injecting grease |
-
2016
- 2016-09-29 CN CN201621091512.4U patent/CN206054720U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246910A (en) * | 2016-09-29 | 2016-12-21 | 武汉科技大学 | A kind of internal adjustable dense seal injecting grease |
| CN106246910B (en) * | 2016-09-29 | 2017-10-24 | 武汉科技大学 | A kind of adjustable dense seal of internal injection lubricating grease |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170329 Effective date of abandoning: 20171024 |
|
| AV01 | Patent right actively abandoned |