CN202188130U - Reducer rotating shaft dustproof and greaseproof sealing device - Google Patents
Reducer rotating shaft dustproof and greaseproof sealing device Download PDFInfo
- Publication number
- CN202188130U CN202188130U CN2011203062247U CN201120306224U CN202188130U CN 202188130 U CN202188130 U CN 202188130U CN 2011203062247 U CN2011203062247 U CN 2011203062247U CN 201120306224 U CN201120306224 U CN 201120306224U CN 202188130 U CN202188130 U CN 202188130U
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- end cap
- labyrinth disc
- oil sealing
- sealing device
- gap
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Abstract
The utility model relates to a reducer rotating shaft dustproof and greaseproof sealing device, which comprises an end cap, a labyrinth disc and an oil seal, the end cap is fixed on the case of a reducer, the oil seal is installed in the inner hole of the end cover, the labyrinth disc is sleeved on a rotating shaft through a fastening screw, and is positioned on the outer side of the end cover, a gap is left between the labyrinth disc and the end cover, the gap comprises a peripheral gap and a middle gap, the inner side of the labyrinth disc is provided with a circular station which is embedded with the outer side of the end cover, the circular station comprises a central circular station and a peripheral circular station, and is characterized in that the peripheral wall of the central circular station of the labyrinth disc is provided with a circular groove, and a group of mechanical seal rings is arranged between the circular groove and the inner hole wall of the end surface in a tensing way. The utility model has the advantages of scientific and reasonable structure design, compact structure, complete function, reliable performance, prolonged service life and dustproof and oilproof function, and is a sealing device with higher innovation.
Description
Technical field;
The utility model belongs to the speed reducer field, the dustproof anti-oil sealing device of particularly a kind of speed reducer revolution.
Background technique;
Speed reducer is that a kind of power is passed on mechanism, utilizes the velocity transducer of gear, the winding number of motor is decelerated to desired winding number, and obtain the mechanism of big torque.Be used for the mechanism of transferring power and motion at present; The application area of speed reducer is quite extensive, almost in the transmission system of various machinery, can see its trace, from boats and ships, automobile, the locomotive of the traffic tool; Heavy facility for building; Machining machine and tool that mechanical industry is used and automated production equipment, common household electrical appliances in the daily life, clock and watch or the like.Therefore, the quality that guarantees speed reducer be working life very necessary, preventing dust grease proofing is exactly wherein one.The common this sealing configuration that can prevent dust and can be grease proofing mainly adopts the structure of a labyrinth disc and an oil sealing at present, and the oil sealing that wherein is installed near lubricant oil one side is common single lip seal, and sealing lip has spring, and main effect is grease proofing; The labyrinth disc that is installed in the end cap outside and rotates together with the axis is used for preventing dust, and is full of lubricating grease between end cap and the labyrinth disc.There are some problems in the seal arrangement of this structure: because lubricating grease is full of whole gap; The oil sealing place of grease proofing effect also can be full of lubricating grease, operates in when speed reducer under the rugged environment that dust such as coal yard, mining site are big, impurity is many, and dust and impurity can get into the oil sealing place along with lubricating grease; The oil sealing lost of life; Axle head oil impregnate, leakage of oil situation often take place, and after the running, oil mass reduces, oil level descends, insufficient lubrication for a long time; Bearing and gear wear and tear, and have a strong impact on the normal operation and the working life of speed reducer.
Summary of the invention;
The purpose of the utility model is to overcome the deficiency of existing technology, and a kind of multiple functional, reliable performance is provided, and has the dustproof grease proofing seal arrangement that prolongs the oil sealing life-span.
The utility model solves its technical problem and takes following technological scheme to realize:
The dustproof anti-oil sealing device of a kind of speed reducer running shaft comprises end cap, labyrinth disc, oil sealing, and end cap is fixed on the casing of speed reducer; Oil sealing is installed in the end cap endoporus; Labyrinth disc is sleeved on the running shaft through fastening screw trip bolt and is positioned at the end cap outside, leaves the gap between labyrinth disc and the end cap, and this gap comprises circumferential play and center clearance; The labyrinth disc inner side surface is shaped on the annular table with the mutual setting-in of end cap outer side surface; This annular table comprises center ring platform and peripheral ring platform, it is characterized in that: on the excircle wall of the center ring platform of labyrinth disc, be shaped on circular groove, tensioner is equipped with one group of mechanical seal annulus between the endoporus wall of this circular groove and end cap.
And described one group of mechanical seal annulus is open type spring steel annulus, and the interleaved openings of this group of open type spring steel annulus is arranged.
And described one group of mechanical seal annulus is three.
The advantage and the good effect of the utility model are:
1. this dustproof grease proofing seal arrangement is through making circular groove on the excircle wall of labyrinth disc center ring platform; One group of mechanical seal annulus is installed between the endoporus wall of this circular groove and end cap; Stop the many lubricating grease of impurity to enter into oil sealing; Effectively increase the working life of oil sealing, reached purpose dustproof, grease proofing under rugged environment.
2. originally dustproof grease proofing seal arrangement; Said annulus all be opening, material is spring steel, one group of quantity is three, annulus outer ring, back tensioner is installed on the end cap endoporus; Each annulus interleaved openings distributes during running; Lubricating grease just can not enter into the oil sealing place like this, and lubricating grease and oil sealing are isolated fully, reaches the dust-tight purpose.
3. the utility model scientific structure design is reasonable, and have compact structure, multiple functional, reliable performance, increase the service life, dustproof grease proofing advantage, be a kind of seal arrangement that has than high innovation character.
Description of drawings;
Fig. 1 is the plan view of the utility model.
Fig. 2 is the A portion enlarged view of Fig. 1.
Fig. 3 is the B portion enlarged view of Fig. 2.
Embodiment;
Below in conjunction with accompanying drawing, the utility model is done further to detail through specific embodiment.Following examples are descriptive, are not determinate, can not limit the protection domain of the utility model with this.
The utility model relates to the dustproof anti-oil sealing device of a kind of speed reducer running shaft, comprises end cap 2, labyrinth disc 5, oil sealing 12, and lubricating cup 1 is installed on the cylindrical of end cap; Lubricating cup is used for injecting lubricating grease, and end cap is fixed on the casing of speed reducer, and oil sealing is installed in the end cap endoporus; Labyrinth disc is sleeved on the running shaft 8 through fastening screw trip bolt 7 and is positioned at the end cap outside; Leave the gap between labyrinth disc and the end cap, this gap comprises circumferential play 4 and center clearance 11, and the labyrinth disc inner side surface is shaped on the annular table with the mutual setting-in of end cap outer side surface; This annular table comprises center ring platform 6 and peripheral ring platform 3; Its innovation part is: on the excircle wall of the center ring platform of labyrinth disc, be shaped on circular groove 9, tensioner is equipped with one group of mechanical seal annulus 10 between the endoporus wall of this circular groove and end cap, and described one group of mechanical seal annulus is open type spring steel annulus; The interleaved openings of this group of open type spring steel annulus arranges that described one group of mechanical seal annulus is three.
What oil sealing mainly played in the present embodiment is the effect of oil sealing; The rubber seal lip and the running shaft of oil sealing fit tightly;, running shaft rely on the rubber seal lip to stop oil leakage in the casing when rotating; The material of sealing lip is nitrile butadiene rubber or fluorine rubber, has high temperature resistance and friction resistant function, and sealing lip can keep better elastic; Labyrinth disc mainly plays the dust sealing effect; Must between end cap and labyrinth disc, inject lubricating grease before the running shaft running, lubricating grease injects end cap through High Pressure Gun from lubricating cup, and is full of the circumferential play between end cap and the labyrinth disc; End cap is fixed; Labyrinth disc is fixed on the running shaft through fastening screw trip bolt, and moves with running shaft, and the gap becomes tortuous labyrinth-like.
Mechanical seal annulus in this seal arrangement is ringent spring steel.The end cap diameter of bore must rely on the angle of leading into of 30 ° of the interior hole end surfaces of end cap less than sealed circular ring nature external diameter during design during installation.Sealed circular ring is installed the outer ring, back and is compressed; Since elastic reaction all the time tensioner on the end cap endoporus; The interleaved openings of three one group sealed circular ring fits tightly when work, and the middle micro-gap that forms forms good labyrinth seal effect; Can isolate the entering of lubricating grease fully, the protection oil sealing is not polluted by dirty lubricating grease.
Although disclose the embodiment and the accompanying drawing of the utility model for the purpose of illustration; But it will be appreciated by those skilled in the art that: in spirit that does not break away from the utility model and accompanying claims and scope; Various replacements, variation and modification all are possible; Therefore, the scope of the utility model is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (3)
1. the dustproof anti-oil sealing device of speed reducer running shaft comprises end cap, labyrinth disc, oil sealing, and end cap is fixed on the casing of speed reducer; Oil sealing is installed in the end cap endoporus; Labyrinth disc is sleeved on the running shaft through fastening screw trip bolt and is positioned at the end cap outside, leaves the gap between labyrinth disc and the end cap, and this gap comprises circumferential play and center clearance; The labyrinth disc inner side surface is shaped on the annular table with the mutual setting-in of end cap outer side surface; This annular table comprises center ring platform and peripheral ring platform, it is characterized in that: on the excircle wall of the center ring platform of labyrinth disc, be shaped on circular groove, tensioner is equipped with one group of mechanical seal annulus between the endoporus wall of this circular groove and end cap.
2. the dustproof anti-oil sealing device of a kind of speed reducer running shaft according to claim 1, it is characterized in that: described one group of mechanical seal annulus is open type spring steel annulus, and the interleaved openings of this group of open type spring steel annulus is arranged.
3. the dustproof anti-oil sealing device of a kind of speed reducer running shaft according to claim 1, it is characterized in that: described one group of mechanical seal annulus is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203062247U CN202188130U (en) | 2011-08-22 | 2011-08-22 | Reducer rotating shaft dustproof and greaseproof sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203062247U CN202188130U (en) | 2011-08-22 | 2011-08-22 | Reducer rotating shaft dustproof and greaseproof sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202188130U true CN202188130U (en) | 2012-04-11 |
Family
ID=45919582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203062247U Expired - Fee Related CN202188130U (en) | 2011-08-22 | 2011-08-22 | Reducer rotating shaft dustproof and greaseproof sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202188130U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536244A (en) * | 2020-04-08 | 2020-08-14 | 上海机电工程研究所 | Staggered rain-proof structure suitable for rotating shaft |
| CN112431929A (en) * | 2020-11-27 | 2021-03-02 | 清华大学 | Magnetic liquid sealing device using mercury to prevent dust |
-
2011
- 2011-08-22 CN CN2011203062247U patent/CN202188130U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536244A (en) * | 2020-04-08 | 2020-08-14 | 上海机电工程研究所 | Staggered rain-proof structure suitable for rotating shaft |
| CN112431929A (en) * | 2020-11-27 | 2021-03-02 | 清华大学 | Magnetic liquid sealing device using mercury to prevent dust |
| CN112431929B (en) * | 2020-11-27 | 2022-03-04 | 清华大学 | Magnetic liquid sealing device using mercury to prevent dust |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20160822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |