CN106090240B - Labyrinth oil seal protective device - Google Patents
Labyrinth oil seal protective device Download PDFInfo
- Publication number
- CN106090240B CN106090240B CN201610393283.XA CN201610393283A CN106090240B CN 106090240 B CN106090240 B CN 106090240B CN 201610393283 A CN201610393283 A CN 201610393283A CN 106090240 B CN106090240 B CN 106090240B
- Authority
- CN
- China
- Prior art keywords
- outer shroud
- axis
- annular protrusion
- oil sealing
- protective device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
Abstract
The invention discloses a kind of labyrinth oil seal protective device, it is related to machinery manufacturing technology field, it includes the oil sealing being sleeved on axis, and oil sealing is arranged between axis and outer shroud, and axis has radially outer annular protrusion, and oil sealing is placed in the inner side of annular protrusion；Outer shroud includes the first outer shroud and the second outer shroud being sleeved on successively from outside to inside on axis, hole card is provided between the second outer shroud and axis, oil sealing is installed between hole card, the second outer shroud and annular protrusion；First outer shroud and the second outer shroud are connected, the inner peripheral surface of the inner peripheral surface of first outer shroud and the second outer shroud is engaged with the outer circumferential surface of annular protrusion, the outer circumferential surface of annular protrusion is provided with least two shoulders, and the gap between the outer circumferential surface and two inner peripheral surfaces forms labyrinth clearance.The present invention solves the problems, such as that small particle easily invades oil sealing and causes oil seal failure.
Description
Technical field
The present invention relates to machinery manufacturing technology field, especially a kind of mechanical structure for protecting oil sealing.
Background technology
Various mechanical equipments are usually required for reducing friction, protection machinery and processing with liquid or semisolid lubricating oil
Workpiece, and then isolated between the component for needing to lubricate in transmission system and execution unit with oil sealing, avoid oil seepage.
The oil sealing of existing mechanical equipment is the outside for being directly exposed to component, and engineering mechanical device is generally all in severe operating mode ring
Work under border, easily intrusion exposed to exterior oil sealing, thereby results in the earlier period damage of oil sealing, it is necessary to frequency to the small particle such as dust
Replace numerously.
The content of the invention
The object of the present invention is to provide a kind of labyrinth oil seal protective device, this device can solve engineering mechanical device
Under severe operating mode, small particle easily invades the problem of oil sealing causes oil seal failure.
To solve the above-mentioned problems, the technical solution adopted by the present invention is：This labyrinth oil seal protective device includes set
Oil sealing on axis, the oil sealing are arranged between the axis and outer shroud, and the axis has radially outer annular protrusion, institute
State the inner side that oil sealing is placed in the annular protrusion；The outer shroud includes being set with successively from outside to inside outside first on the shaft
Ring and the second outer shroud, are provided with hole card between second outer shroud and the axis, the oil sealing is installed in the hole card, described
Between two outer shrouds and the annular protrusion；First outer shroud is connected with second outer shroud, first outer shroud it is interior
The inner peripheral surface of side face and second outer shroud is engaged with the outer circumferential surface of the annular protrusion, outside the annular protrusion
Side face is provided with two shoulders, and the gap between the outer circumferential surface and two inner peripheral surfaces forms labyrinth clearance；The oil sealing
Side towards the annular protrusion is the Closed End for extending respectively to second outer shroud and the axis；Two described
Shoulder includes outer first shoulder and the second inner shoulder, and the axially inclined angle of the first shoulder chamfering is more than described the
The axially inclined angle of two shoulder bevels.
In the technical solution of above-mentioned labyrinth oil seal protective device, more specifically technical solution can also be：The labyrinth
The unilateral gap in gap is 0~1mm.
Further, the difference in height between the shoulder is 0.5~1mm.
Further, the gap between the madial wall of the oil sealing and the annular protrusion is more than 0.5mm.
Further, first outer shroud and second outer shroud are rotational parts, and the axis is as support retaining element.
Further, first outer shroud and second outer shroud are support retaining element, and the axis is as rotational parts.
Further, the axis is made of one or more part, first outer shroud and second outer shroud difference
It is made of one or more part.
By adopting the above-described technical solution, the present invention has the advantages that compared with prior art：
The 1st, annular protrusion is set on axis, oil sealing is placed in the groove on the inside of the annular protrusion, engagement sleeves are mounted in axis
On outer shroud, oil sealing is arranged in sealing space, avoids oil sealing exposed；The outer circumferential surface of annular protrusion sets at least two again
Shoulder, thus, makes gap between annular protrusion and outer shroud form labyrinth clearance, the structure of the labyrinth clearance as oil sealing outside
Side, in this way, even if engineering mechanical device works under most evil bad operating mode, the small particle such as dust in external environment condition is also difficult to
Oil sealing is invaded by labyrinth clearance, oil sealing earlier period damage is avoided, extends the service life of oil sealing, reduce maintenance cost；Outside
Ring is set to first, second outer shroud coordinated with sealing protrusion, easy to process and installation；
2nd, the big angle of inclination of first shoulder and the restriction of labyrinth clearance, can effectively stop short grained intrusion.
Brief description of the drawings
Fig. 1 is the structure diagram of this labyrinth oil seal protective device embodiment.
Fig. 2 is the enlarged drawing in dotted line frame in Fig. 1.
Embodiment
The invention will be further described for embodiment below in conjunction with the accompanying drawings：
Labyrinth oil seal protective device shown in Fig. 1 mainly includes axis 1 and outer shroud, and oil sealing 6, which is sleeved on axis 1, is placed in axis 1
Between outer shroud.Axis 1 has radially outer annular protrusion 1-1, and oil sealing 6 is placed in the inner side of annular protrusion 1-1, convex annular
It is rounded corner to go out the bottom on the inside of portion 1-1, and referring to Fig. 2, the gap between the madial wall of oil sealing 6 and annular protrusion 1-1 is more than
0.5mm.For ease of processing and installation, outer shroud includes the first outer shroud 4 and the second outer shroud 5 being sleeved on successively from outside to inside on axis 1,
Hole card 7 is provided between second outer shroud 5 and axis 1, the hole card 7 of the present embodiment is flush-mounted in the inner wall of the second outer shroud 5, thus by oil sealing
Between 6 are installed on the inside of hole card 7, the second outer shroud 5 and annular protrusion 1-1；First outer shroud 4 and the second outer shroud 5 are locked by bolt 3
Fasten, the inner peripheral surface of the first outer shroud 4 and the inner peripheral surface corresponding to the second outer shroud 5 of annular protrusion 1-1 are protruded with annular
The outer circumferential surface of portion 1-1 is engaged, as shown in Fig. 2, the outer circumferential surface in annular protrusion 1-1 is provided with two shoulders, between shoulder
Difference in height be 0.5~1mm, between the outer circumferential surface of annular protrusion 1-1 and the inner peripheral surface of the first outer shroud 4 and the second outer shroud 5
Gap forms labyrinth clearance 2, and the unilateral gap of labyrinth clearance 2 is 0~1mm；Two shoulders of the present embodiment include outer the
One shoulder 1-11 and the second inner shoulder 1-12, first shoulder 1-11 chamferings and the second shoulder 1-12 chamferings are all fallen for inclination
Angle, wherein, the axially inclined angles of first shoulder 1-11 chamferings is more than the axially inclined angle of the second shoulder 1-12 chamferings, and first
The length for being shorter in length than the second shoulder 1-12 chamferings of shoulder 1-11 chamferings.It is noted that oil sealing 6 is towards annular protrusion
The side of 1-1 is the Closed End for extending respectively to the second outer shroud and axis；First outer shroud 4 and the second outer shroud 5 are support constant zero
Part, axis 1 are used as rotational parts, and axis 1, the first outer shroud 4 and the second outer shroud 5 are overall single part, the outside of the first outer shroud 4
Wall is equipped with the limiting slot for placing 3 head of bolt, and the madial wall of the first outer shroud 4 is equipped with card slot, and the card is inserted into the outer end of the second outer shroud 5
In groove.
Content described in this specification embodiment is only enumerating to the way of realization of inventive concept, protection of the invention
Scope is not construed as being only limitted to the concrete form that embodiment is stated, for example, the first outer shroud and the second outer shroud can be used as and turn
Dynamic part, axis is then as support retaining element；Axis, the first outer shroud and the second outer shroud can be made of multiple parts respectively；Set three
A or more step etc.；Protection scope of the present invention is also included in those skilled in the art and conceives can think according to the present invention
The equivalent technologies mean arrived.
Claims (8)
1. a kind of labyrinth oil seal protective device, including the oil sealing being sleeved on axis, the oil sealing be arranged on the axis and outer shroud it
Between, it is characterised in that：The axis has radially outer annular protrusion, and the oil sealing is placed in the interior of the annular protrusion
Side；The outer shroud includes being set with the first outer shroud and the second outer shroud on the shaft successively from outside to inside, second outer shroud and
Hole card is provided between the axis, the oil sealing is installed between the hole card, second outer shroud and the annular protrusion；
First outer shroud is connected with second outer shroud, the inner peripheral surface of the inner peripheral surface of first outer shroud and second outer shroud
It is engaged with the outer circumferential surface of the annular protrusion, the outer circumferential surface of the annular protrusion is provided with two shoulders, the periphery
Gap between face and two inner peripheral surfaces forms labyrinth clearance；The oil sealing is to divide towards the side of the annular protrusion
The Closed End of second outer shroud and the axis is not extended to；Two shoulders include outer first shoulder and inner
Second shoulder, the axially inclined angle of the first shoulder chamfering are more than the axially inclined angle of second shoulder bevel.
2. labyrinth oil seal protective device according to claim 1, it is characterised in that：The unilateral gap of the labyrinth clearance
For 0~1mm.
3. labyrinth oil seal protective device according to claim 2, it is characterised in that：Difference in height between the shoulder is
0.5~1mm.
4. labyrinth oil seal protective device according to claim 3, it is characterised in that：The oil sealing and the annular protrusion
Gap between the madial wall in portion is more than 0.5mm.
5. labyrinth oil seal protective device according to claim 4, it is characterised in that：First outer shroud and described second
Outer shroud is rotational parts, and the axis is as support retaining element.
6. labyrinth oil seal protective device according to claim 5, it is characterised in that：The axis by one or more zero
Part forms, and first outer shroud and second outer shroud are made of one or more part respectively.
7. labyrinth oil seal protective device according to claim 4, it is characterised in that：First outer shroud and described second
Outer shroud is support retaining element, and the axis is as rotational parts.
8. labyrinth oil seal protective device according to claim 7, it is characterised in that：The axis by one or more zero
Part forms, and first outer shroud and second outer shroud are made of one or more part respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610393283.XA CN106090240B (en) | 2016-06-06 | 2016-06-06 | Labyrinth oil seal protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610393283.XA CN106090240B (en) | 2016-06-06 | 2016-06-06 | Labyrinth oil seal protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106090240A CN106090240A (en) | 2016-11-09 |
| CN106090240B true CN106090240B (en) | 2018-04-17 |
Family
ID=57447613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610393283.XA Active CN106090240B (en) | 2016-06-06 | 2016-06-06 | Labyrinth oil seal protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106090240B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245856A (en) * | 2008-03-27 | 2008-08-20 | 济南东方天明机械有限公司 | Bearing sealing device |
| CN201202816Y (en) * | 2008-06-10 | 2009-03-04 | 宁波凯特机械有限公司 | Mechanical sealing device of rotating shaft |
| CN101413588A (en) * | 2008-11-24 | 2009-04-22 | 江苏泰隆减速机股份有限公司 | Non-seepage drive seal device |
| CN201339717Y (en) * | 2008-12-26 | 2009-11-04 | 艾志工业技术集团有限公司 | Integral type labyrinth seal |
| CN202674322U (en) * | 2012-08-08 | 2013-01-16 | 温州奕龙汽车零部件有限公司 | Shaft shoulder dustproof structure of electromagnetic clutch |
| CN203214651U (en) * | 2013-03-05 | 2013-09-25 | 宋建华 | Bearing assembly |
| CN203214673U (en) * | 2013-03-07 | 2013-09-25 | 宋锦荣 | Bearing assembly |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS583933Y2 (en) * | 1977-06-09 | 1983-01-24 | 光洋精工株式会社 | Labyrinth structure in the bearing part of a vehicle bearing device |
| JPS5835478B2 (en) * | 1977-06-10 | 1983-08-02 | 本州製紙株式会社 | heat sensitive recording material |
| JPH11315843A (en) * | 1998-05-06 | 1999-11-16 | Nachi Fujikoshi Corp | Shaft seal device |
| JP2005147329A (en) * | 2003-11-18 | 2005-06-09 | Ntn Corp | Bearing device for wind power generator |
| JP2006118620A (en) * | 2004-10-22 | 2006-05-11 | Toshiba Mach Co Ltd | Sealing method of bearing presser |
-
2016
- 2016-06-06 CN CN201610393283.XA patent/CN106090240B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101245856A (en) * | 2008-03-27 | 2008-08-20 | 济南东方天明机械有限公司 | Bearing sealing device |
| CN201202816Y (en) * | 2008-06-10 | 2009-03-04 | 宁波凯特机械有限公司 | Mechanical sealing device of rotating shaft |
| CN101413588A (en) * | 2008-11-24 | 2009-04-22 | 江苏泰隆减速机股份有限公司 | Non-seepage drive seal device |
| CN201339717Y (en) * | 2008-12-26 | 2009-11-04 | 艾志工业技术集团有限公司 | Integral type labyrinth seal |
| CN202674322U (en) * | 2012-08-08 | 2013-01-16 | 温州奕龙汽车零部件有限公司 | Shaft shoulder dustproof structure of electromagnetic clutch |
| CN203214651U (en) * | 2013-03-05 | 2013-09-25 | 宋建华 | Bearing assembly |
| CN203214673U (en) * | 2013-03-07 | 2013-09-25 | 宋锦荣 | Bearing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106090240A (en) | 2016-11-09 |
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