CN203115099U - Oil main shaft sealing structure - Google Patents
Oil main shaft sealing structure Download PDFInfo
- Publication number
- CN203115099U CN203115099U CN2013201110809U CN201320111080U CN203115099U CN 203115099 U CN203115099 U CN 203115099U CN 2013201110809 U CN2013201110809 U CN 2013201110809U CN 201320111080 U CN201320111080 U CN 201320111080U CN 203115099 U CN203115099 U CN 203115099U
- Authority
- CN
- China
- Prior art keywords
- main shaft
- nut
- dust cover
- sealing structure
- tegillum
- 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.)
- Expired - Fee Related
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Classifications
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/80—Labyrinth sealings
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to an oil main shaft sealing structure. The oil main shaft sealing structure comprises a main shaft with the axis extending in the front-and-back direction, a front nut capable of rotating along with the main shaft is arranged outside the main shaft through threads in a sleeved mode, a dustproof cover is arranged on the main shaft at the front end of the front nut in a sleeved mode, and a front small cover is arranged at the rear end of the front nut. A first labyrinth sealing structure is arranged between the rear end of the front nut and the front small cap, and the first labyrinth sealing structure is at least a pair of rear annular groove and front annular protrusion which are in fit with each other and rotationally matched in an inserting mode and are arranged between the rear end face of the front nut and the front small cover; and a second labyrinth sealing structure is arranged between the front end face of the front nut and the dustproof cover, and the second labyrinth sealing structure is at least a pair of front annular groove and rear annular protrusion which are in fit with each other and rotationally matched in an inserting mode and are arranged between the front end face of the front nut and the dustproof cover. The oil main shaft sealing structure adopts a front-and-back two-layer labyrinth type sealing structure, is better in sealing effect, prolongs service life of the main shaft and promotes using reliability of the main shaft.
Description
Technical field
The utility model relates to sealing of spindles, relates in particular to a kind of grease main shaft sealing construction.
Background technique
The grease main shaft belongs to disposable greasing, need not oil gas and mist of oil device, and the front-end of spindle operated by rotary motion has sealing configuration.Have disclosed electric sealing of spindles structure in the Chinese patent application " design of Sealing Structure of electric main shaft of oil fog mill " that sealing configuration such as publication number are CN 101494402A now, comprise the electric main shaft that axis extends along fore-and-aft direction, the electricity spindle jacket is provided with bearing, bearing outside is provided with front-end bearing pedestal, bearing ear end face roof pressure is on front-end bearing pedestal, the bearing front-end face is provided with the preceding nut that is connected with electric spindle thread, preceding nut is provided with the back annular groove near bearing one end, one side roof pressure of back annular groove is on bearing inner race, be provided with preceding tegillum between preceding nut and the bearing, preceding tegillum is provided with and the corresponding annular protrusion of the annular groove of preceding nut near preceding nut one side, be provided with labyrinth seal structure between preceding tegillum and the preceding nut, described labyrinth seal structure is annular protrusion and the annular groove of the identical rotation inserting of relative set on preceding tegillum and the preceding nut, preceding nut is provided with the water dumping groove, also be arranged with dust cover on the electric main shaft of preceding nut front end, be provided with the gap between dust cover front inner wall and the preceding nut, seal by O type circle between dust cover and the front-end bearing pedestal.Annular groove between preceding nut and the preceding tegillum and annular protrusion constitute sealing configuration.But this sealing configuration still has impurity or cutting fluid enters bearing.
The model utility content
The purpose of this utility model is the grease main shaft sealing construction that proposes a kind of good sealing effect.
For addressing the above problem, the technical solution adopted in the utility model is:
A kind of main shaft sealing construction, comprise the main shaft that axis extends along fore-and-aft direction, the outer preceding nut that can rotate with main shaft that is provided with by thread bush of main shaft, be arranged with dust cover on the main shaft of preceding nut front end, preceding nut rear end is provided with preceding tegillum, be provided with first labyrinth seal structure between nut rear end and the described preceding tegillum before described, described first labyrinth seal structure is at least one pair of identical back annular groove and the preceding annular protrusion that rotates inserting that arranges between described preceding nut rear end end face and the described preceding tegillum, be provided with second labyrinth seal structure between the front-end face of nut and the described dust cover before described, described second labyrinth seal structure is at least one pair of preceding annular groove and the back annular protrusion that coincide and rotate inserting that arranges between described preceding nut front-end face and the described dust cover.
Be Spielpassung between preceding nut and dust cover, dust cover and main shaft, preceding nut and the preceding tegillum, radial clearance is 0.3～0.7mm, and axial clearance is 0.5～1mm.
Described dust cover and described preceding tegillum lower end are provided with the water dumping groove that radially extends.
Described dust cover lower end is provided with the drain boles that radially extends along it, be used for discharging impurity.
Described drain boles aperture is at least 6mm.
Be arranged with bearing on the main shaft of little cover back-end before described, described bearing outside is provided with front-end bearing pedestal, is provided with O-ring seals between described front-end bearing pedestal and the described dust cover.
A kind of grease main shaft sealing construction that the utility model proposes, be arranged with preceding nut on the main shaft, preceding nut and main shaft pass through screw-thread fit, before the nut front end form second labyrinth seal structure with being sheathed at least one pair of preceding annular groove and back annular protrusion that rotates inserting that coincide of offering on the dust cover on the main shaft, coincide back annular groove and the preceding annular protrusion of rotation inserting of at least one pair of that offer on preceding nut rear end and the preceding tegillum forms first labyrinth seal structure.After cutting fluid and impurity enter into gap between dust cover and the main shaft, stopped by second labyrinth seal structure, can be stopped by first labyrinth seal structure between preceding nut and the preceding tegillum if still have a spot of impurity and cutting fluid to enter then.Two-layer labyrinth seal structure before and after the utility model adopts, sealing effect is better, has improved working life and the reliability of grease main shaft.
Further, at dust cover and preceding tegillum lower end the water dumping groove that radially extends along it is set, after the labyrinth seal structure of dust cover and preceding nut composition stops, when still having small amount of impurities and cutting fluid to enter, adopt the water dumping groove that it is thrown away, further reduce entering of impurity etc.
Further, in the lower end of dust cover drain boles is set, the impurity that the water dumping groove throws away is discharged.
Further, the drain boles aperture is at least 6mm, is convenient to the smooth discharge of cutting fluid and impurity.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation.
Embodiment
Embodiment of the present utility model is elaborated below in conjunction with the embodiment of accompanying drawing to present embodiment as shown in Figure 1:
A kind of grease main shaft sealing construction, comprise the main shaft 1 that axis extends along fore-and-aft direction, be connected to the preceding nut 3 that can rotate with main shaft by thread bush on the main shaft 1, preceding nut 3 front-end faces are provided with preceding annular groove, preceding nut 3 ear end faces are provided with the back annular groove, be set with dust cover 2 on the main shaft 1 in preceding nut 3 the place aheads, described dust cover 2 is provided with and the preceding annular groove of preceding nut 3 coincide rotates the back annular protrusion of inserting, and described back annular protrusion cooperates formation second labyrinth seal structure with preceding annular groove; Tegillum 4 before nut 3 rears are provided with before described, preceding tegillum 4 are provided with and the identical preceding annular protrusion that rotates inserting of the back annular groove of preceding nut 3, and described back annular groove and preceding annular protrusion constitute first labyrinth seal structure; Be set with bearing 7 on the main shaft 1 at preceding tegillum 4 rears, be arranged with front-end bearing pedestal 6 outside the bearing 7, adopt O-ring seals 5 to be sealed and matched between front-end bearing pedestal 6 and the dust cover 2.This grease main shaft is horizontal positioned in use, discharge smoothly in order to make the cutting fluid and the impurity that enter second labyrinth, offer the first water dumping groove 81 that radially extends along it towards a side on ground at dust cover, preceding tegillum is offered the second water dumping groove 82 that radially extends along it towards a side on ground, the side of dust cover towards ground offer radially extend along it, diameter is the drain boles 9 of 6mm, adopt Spielpassung between preceding nut and dust cover, dust cover and main shaft, preceding nut and the preceding tegillum, its radial clearance is 0.5mm, and axial clearance is 0.7mm.
When main shaft runs up, preceding nut 3 rotates with main shaft 1, be rotatably assorted for the gap between dust cover 2 and preceding tegillum 4 and the preceding nut 3, cutting fluid and impurity will enter from the gap between dust cover 2 and the main shaft 1, part cutting fluid and impurity are stopped by second labyrinth seal structure of the back annular protrusion of the identical rotation inserting on dust cover 2 and the preceding nut 3 and preceding annular groove composition, can not stop portions then throw away by the water dumping groove that dust cover 2 and preceding tegillum 4 lower ends arrange, and the drain boles that arranges through dust cover 2 lower ends discharge, the impurity that can not in time discharge and cutting fluid are arranged the back annular groove of two pairs of rotation insertings that coincide on preceding nut 3 and the preceding tegillum 4 and first sealing configuration that preceding annular protrusion is formed stops; By stopping of first labyrinth seal structure and second labyrinth seal structure, better guaranteed sealing reliability, improve the working life of main shaft.
The back annular protrusion and the preceding annular groove that constitute the identical rotation inserting of first labyrinth seal structure in the present embodiment are a pair of, can be two pairs or more in other embodiments; The preceding annular protrusion and the back annular groove that constitute the identical rotation inserting of second labyrinth seal structure in the present embodiment are two pairs, also can be a pair of or more than two pairs in other embodiments.
In the present embodiment, for guaranteeing sealing effect, adopt Spielpassung between preceding nut and dust cover, dust cover and main shaft, preceding nut and the preceding tegillum, its radial clearance is 0.5mm, axial clearance is 0.7mm, radial clearance can be to remove the arbitrary value of 0.5mm between 0.3～0.7mm in other embodiments of the present utility model, also can adopt the arbitrary value outside 0.3～0.7mm.
In the present embodiment, the diameter of drain boles is 6mm, and the diameter of drain boles can be greater than 6mm or less than the arbitrary value of 6mm in other embodiments of the present utility model.
Claims (6)
1. grease main shaft sealing construction, comprise the main shaft that axis extends along fore-and-aft direction, the outer preceding nut that can rotate with main shaft that is provided with by thread bush of main shaft, be arranged with dust cover on the main shaft of preceding nut front end, preceding nut rear end is provided with preceding tegillum, be provided with first labyrinth seal structure between nut rear end and the described preceding tegillum before described, described first labyrinth seal structure is at least one pair of identical back annular groove and the preceding annular protrusion that rotates inserting that arranges between described preceding nut rear end end face and the described preceding tegillum, it is characterized in that: be provided with second labyrinth seal structure between the front-end face of nut and the described dust cover before described, described second labyrinth seal structure is at least one pair of preceding annular groove and the back annular protrusion that coincide and rotate inserting that arranges between described preceding nut front-end face and the described dust cover.
2. grease main shaft sealing construction according to claim 1, it is characterized in that: be Spielpassung between preceding nut and dust cover, dust cover and main shaft, preceding nut and the preceding tegillum, radial clearance is 0.3～0.7mm, and axial clearance is 0.5～1mm.
3. grease main shaft sealing construction according to claim 1 and 2 is characterized in that: described dust cover and described before the lower end of tegillum be provided with the water dumping groove that radially extends.
4. grease main shaft sealing construction according to claim 3 is characterized in that: described dust cover lower end is provided with the drain boles that radially extends along it, be used for discharging impurity.
5. grease main shaft sealing construction according to claim 4, it is characterized in that: described drain boles aperture is at least 6mm.
6. grease main shaft sealing construction according to claim 3 is characterized in that: be arranged with bearing on the main shaft of little cover back-end before described, described bearing outside is provided with front-end bearing pedestal, is provided with O-ring seals between described front-end bearing pedestal and the described dust cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201110809U CN203115099U (en) | 2013-03-12 | 2013-03-12 | Oil main shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201110809U CN203115099U (en) | 2013-03-12 | 2013-03-12 | Oil main shaft sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203115099U true CN203115099U (en) | 2013-08-07 |
Family
ID=48895447
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201110809U Expired - Fee Related CN203115099U (en) | 2013-03-12 | 2013-03-12 | Oil main shaft sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203115099U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485768A (en) * | 2014-11-05 | 2015-04-01 | 杭州华星轴承有限公司 | Non-oil-mist energy saving environmental protection electric main shaft |
| CN106763217A (en) * | 2017-01-10 | 2017-05-31 | 佛山市金银河智能装备股份有限公司 | A kind of non-contact type high speed shaft seal mechanism |
| CN107061747A (en) * | 2017-05-31 | 2017-08-18 | 江苏海川卓越密封材料有限公司 | A kind of L-type liquid labyrinth seal |
| WO2018189118A1 (en) | 2017-04-11 | 2018-10-18 | Ketten-Wulf Betriebs-Gmbh | Articulated chain |
| CN108825673A (en) * | 2018-09-10 | 2018-11-16 | 内蒙古第机械集团股份有限公司 | Elastic cement shaft coupling |
| CN109226791A (en) * | 2018-11-21 | 2019-01-18 | 陕西海力特精密机械有限公司 | The sealing structure of digital control machine tool tailstock live spindle |
| CN110052950A (en) * | 2018-12-03 | 2019-07-26 | 杭州众硅电子科技有限公司 | A kind of sealing structure of polishing wafer main shaft |
| CN114389395A (en) * | 2020-10-21 | 2022-04-22 | 襄阳中车电机技术有限公司 | Shaft end sealing structure of motor with coupling, motor and new energy automobile |
| CN114389394A (en) * | 2020-10-21 | 2022-04-22 | 襄阳中车电机技术有限公司 | Shaft end sealing device of motor with coupling, motor and new energy automobile |
-
2013
- 2013-03-12 CN CN2013201110809U patent/CN203115099U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104485768A (en) * | 2014-11-05 | 2015-04-01 | 杭州华星轴承有限公司 | Non-oil-mist energy saving environmental protection electric main shaft |
| CN106763217A (en) * | 2017-01-10 | 2017-05-31 | 佛山市金银河智能装备股份有限公司 | A kind of non-contact type high speed shaft seal mechanism |
| WO2018189118A1 (en) | 2017-04-11 | 2018-10-18 | Ketten-Wulf Betriebs-Gmbh | Articulated chain |
| CN107061747A (en) * | 2017-05-31 | 2017-08-18 | 江苏海川卓越密封材料有限公司 | A kind of L-type liquid labyrinth seal |
| CN108825673A (en) * | 2018-09-10 | 2018-11-16 | 内蒙古第机械集团股份有限公司 | Elastic cement shaft coupling |
| CN109226791A (en) * | 2018-11-21 | 2019-01-18 | 陕西海力特精密机械有限公司 | The sealing structure of digital control machine tool tailstock live spindle |
| CN110052950A (en) * | 2018-12-03 | 2019-07-26 | 杭州众硅电子科技有限公司 | A kind of sealing structure of polishing wafer main shaft |
| CN114389395A (en) * | 2020-10-21 | 2022-04-22 | 襄阳中车电机技术有限公司 | Shaft end sealing structure of motor with coupling, motor and new energy automobile |
| CN114389394A (en) * | 2020-10-21 | 2022-04-22 | 襄阳中车电机技术有限公司 | Shaft end sealing device of motor with coupling, motor and new energy automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180510 Address after: 471000 No. 1 axis research road, Jianxi science and Technology Industrial Park, Luoyang, Henan Patentee after: LUOYANG BEARING RESEARCH INSTITUTE Co.,Ltd. Address before: 471039 Fenghua Road 6, hi tech Development Zone, Luoyang, Henan. Patentee before: LUOYANG BEARING SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 |