CN103557311B - Sealing device used for sealing end cover on shaft - Google Patents
Sealing device used for sealing end cover on shaft Download PDFInfo
- Publication number
- CN103557311B CN103557311B CN201310594585.XA CN201310594585A CN103557311B CN 103557311 B CN103557311 B CN 103557311B CN 201310594585 A CN201310594585 A CN 201310594585A CN 103557311 B CN103557311 B CN 103557311B
- Authority
- CN
- China
- Prior art keywords
- ring
- sealing device
- breach
- sealing
- end cap
- 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.)
- Active
Links
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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Abstract
The invention provides a sealing device used for sealing an end cover on a shaft. The sealing device comprises at least one internal retracting ring and at least one external elastic ring, wherein the internal retracting ring is arranged in a first inner groove of the end cover and allows the shaft to penetrate through an inner hole of the internal retracting ring; the diameter of the inner hole of the internal retracting ring is smaller than that of the shaft; the outer diameter of the external elastic ring is larger than the inner diameter of the first inner groove of the end cover; and the inner retracting ring and the external elastic ring are alternately arranged in the axial direction and arranged in a radial overlapping manner simultaneously. Besides, a cover plate, a felt piece and skeleton oil seal are further arranged on the end cover and combined with the internal retracting ring and the external elastic ring to guarantee sealing of transmission equipment, that is, not only is lubricating oil in a bearing prevented from draining, but also outside dust is prevented from entering the interior of a gear box. The sealing device is simple in structure, convenient to manufacture and good in sealing effect.
Description
Technical field
The present invention relates to the sealing device for drive apparatus, the sealing particularly for end cover on axle fills
Put.
Background technology
In some drive apparatus, such as, the gear-box in engineering machinery, static end cap and output power
Relate between rotary shaft seal structure, the lubricant grease in bearing can be prevented to run off, the external world can be prevented again
Dust enters into the inside of gear-box.Particularly, the drive apparatus used in harsh environments, such as coal
The gear-box run in ore deposit, seals and once damages, and on the one hand causes equipment oil leakage so that lack of lubrication, thus
Cause bearing and gear failure；On the other hand so that the impurity such as extraneous dust and earth are easily accessible rotation
Equipment, enters Bearing inner and meshing zone of gears territory, causes bearing and gear failure.Therefore, good close
Envelope design is to ensure that the important leverage means that drive apparatus runs.
In the prior art, use Double-lip framework oil sealing, but this oil enveloping structure reliability is low, in dust atmosphere
It is easily damaged.The employing labyrinth end covers and the outside framework oil seal that also have act on jointly, although reliability is compared and is used alone
Outside framework oil seal improves, but in some liquid and liquid in the case of belt wear impurity, such as mud, this sealing is imitated
The most unreliable, mud is easy to enter outside framework oil seal by labyrinth, thus causes the damage of outside framework oil seal.
Summary of the invention
It is desirable to provide a kind of sealing device for end cover on axle, it has simple in construction, easily
In advantages such as installation, low price, applied ranges.Meanwhile, sealing effectiveness is the best.
According to the present invention on axle the sealing device of end cover, including the first inside groove being arranged on end cap
In and axle can be made to pass at least one of its endoporus inside contract ring and at least one outer plays ring, wherein inside contract the endoporus of ring
Diameter dimension is less than the diameter dimension of axle, and the outer diameter dimension of outer bullet ring is more than the interior diameter of the first inside groove of end cap
Size, and inside contract ring and be alternately arranged in the axial direction with outer bullet ring.
In one embodiment, inside contract and on ring, be provided with the first breach making it in circumferential direction disconnection, outer bullet ring
On be provided with and make its second breach disconnected in circumferential direction, and the second breach and the first breach do not weigh
Close.While ensureing that inside contracting that ring is countershaft has certain tightening force so that inside contract ring and install easily.Meanwhile,
Ensure that outer bullet ring can be arranged in end cap the first inside groove, and contact with the end of the first inside groove of end cap.
Preferably, the opening direction of the second breach and the opening direction of the first breach are inconsistent.
Preferably, the first breach direction is set to radial parallel, and the second breach direction is set to radially in one
Determine angle.
Preferably, inside contract ring and/or the outer ring that plays is steel loop.
In one embodiment, inside contract ring and outer bullet ring is set to overlapping contact in radial directions.Thus realize
Seal.
Preferably, inside contract ring and Wai Danhuan overlapping contact district arranges grease.Thus can effectively cut off dust
Entrance and minimizing inside contract the friction between ring and outer bullet ring.
In another embodiment, the cover plate being arranged on the first end of end cap is also included.Control cover plate and axle
Gap, can effectively stop dust and oarse-grained abrasion impurity to enter.
According to preferred embodiment, also include the outside framework oil seal being arranged in the 3rd inside groove of end cap.Thus avoid
Equipment oil leakage and the lack of lubrication that causes, also prevent the impurity to enter simultaneously.
According to a preferred embodiment, also include in the second inside groove between the first inside groove and the 3rd inside groove
Felt member.Can effective impurity screening, play sealing effectiveness.
Compared with prior art, it is an advantage of the current invention that and inside contract ring and outer bullet ring self structure is simple, it is easy to
Produce and low cost, coordinate installation can effectively stop dust to enter.Meanwhile, end cap arranges cover plate,
Felt member is set in two inside grooves and outside framework oil seal is set in the 3rd inside groove, its synergy, effectively cuts off
Dust or wear particle enter inside gear-box, it is ensured that the sealing of drive apparatus.Outside framework oil seal can also stop tooth
Grease within roller box runs off.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.In the drawings:
Fig. 1 shows the sealing device for end cover on axle according to the present invention；
Fig. 2 shows the plan view inside contracting ring according to the present invention；
Fig. 3 shows the plan view of the outer bullet ring according to the present invention；
Fig. 4 shows the profile of the end cap according to the present invention.
In the accompanying drawings, identical parts use identical reference.Accompanying drawing is not drawn according to actual ratio.
Detailed description of the invention
Hereinafter will introduce according to a preferred embodiment of the invention.
Fig. 1 shows the sealing device 20 for end cover on axle.It includes being arranged on the first of end cap 5
Inside groove 51 inside contracts ring 7 and outer bullet ring 8.Inside contract ring 7 and be configured to circular, as shown in Figure 2.It is not pacified
Under dress situation, its diameter of bore r7Outer diameter dimension R less than axle 22, such as, the overall diameter R of axle2For
120mm, and inside contract the diameter of bore r of ring 77It is sized to about 119～119.5mm (that is, r7Compare R2
Little 0.5～1mm).Outer bullet ring 8 is configured to circular, as shown in Figure 3.Under its non-installation situation, outer bullet ring 8
Overall diameter R8Interior diameter r more than the first inside groove 51 of end cap 551, such as, at the overall diameter R of axle2For
In the case of 120mm, R8Compare r51Larger about 1～2mm.Inside contract ring 7 to replace in the axial direction with outer bullet ring 8
Ground is arranged.Thus meet sealing demand.It is to be appreciated that the direction parallel with the axle 2 of gear housing 1 is
Axially, vertical with the axle 2 of gear housing 1 direction is radially.
As in figure 2 it is shown, include the first breach on ring 7 inside contracting, the first breach will inside contract ring 7 in circumference and disconnect.
Preferably, the first breach be arranged so that in the mounted state two along between vertical dimension be about 1.0～2.0mm.
This first breach ensure that and is installed to inside contracting ring 7 on axle 2, ensure that the banding inside contracting ring 7 countershaft 2 simultaneously
Power, makes to inside contract ring 7 and contacts with axle 2.
Including the second breach as it is shown on figure 3, play outside on ring 8, outer bullet ring 8 is disconnected by it in circumference.Such as,
Second breach be arranged so that in the mounted state two along between vertical dimension be about 0.6～1.2mm.This is years old
Two breach ensure that outer bullet ring 8 is arranged in the first inside groove 51 of end cap 5, also meets outer bullet ring 8 and opens
Contact with the end of the first inside groove 51.
For ensureing sealing effectiveness, inside contract ring 7 and outer bullet ring 8 at radial direction overlapping contact, i.e. inside contract ring 7
Overall diameter R7Interior diameter r more than outer bullet ring 88.Preferably, overlapping radial dimension is not less than 4mm.
Sealing device 20 includes that at least one inside contracts ring 7 and at least one outer bullet ring 8, such as, can arrange two
Inside contract and outside ring 7 and two, play ring 8, and inside contract ring 7 and outer bullet ring 8 interlaced arrangement, as it is shown in figure 1, at end
In first inside groove 51 of lid 5, inside contract ring 7, outer bullet from the first end to setting gradually the axial direction of the second end
Ring 8, inside contract ring 7 and outer bullet ring 8.Preferably, in the first inside groove 51 of end cap 5, in the first end is arranged
Contracting ring 7.As it is shown in figure 1, the end away from gear housing 1 is the first end, it is the near the end of gear housing 1
Two ends.Additionally, for ensureing good sealing effectiveness, the first breach and the second breach are the most overlapping in radial direction.
The direction of the first breach and the second breach is inconsistent, thus ensure that better seal effect.Such as, may be used
It is set to the direction by the first breach and inside contracts the radial parallel of ring 7, and the second breach is set to and described footpath
To at an angle.It will be understood by those skilled in the art that and the direction of the second breach can also be set to and footpath
To parallel, and the direction of the first breach is with the most at an angle.
Preferably, inside contract ring 7 and outer bullet ring 8 can use steel making.
The axial dimension controlling the first inside groove 51 ensures to inside contract the gap between ring 7 and outer bullet ring 8, and including
Grease is coated in the region that contracting ring 7 and outer bullet ring 8 contact with each other, also can close simultaneously inside contract ring 7 breach and
The breach of outer bullet ring 8, has cut off the entrance of dust the most effectively, and decreases and inside contract ring 7 and outer bullet ring 8
Between friction.Meanwhile, coat inside contracting ring 7 and outer bullet ring 8 contact area with the first inside groove 51 and axle 2
Grease, improves sealing effectiveness, and decreases and inside contract ring 7 and outer bullet ring 8 and end cap 5 and the friction of axle 2.
Sealing device 20 also includes cover plate 6, and it is fixedly installed on the first end of end cap 5.For example, it is possible to
Being fixed on end cap 5 by cover plate 6 by bolt, bolt fastening structure is well known to those skilled in the art, because of
This is not shown.Control the interior diameter (being not shown) of cover plate 6 and the outer diameter dimension R of axle 22
Between gap, just can realize seal.Preferably, gap is 1mm, can effectively stop major part bulky grain
Dust enters.
As shown in Fig. 4 and Fig. 1, sealing device 20 also includes the bone being arranged in the 3rd inside groove 53 of end cap 5
Frame oil sealing 3.In addition to its lubricant grease in preventing bearing runs off, moreover it is possible to stop impurity to enter gear housing 1
Internal.The structure of outside framework oil seal 3 does not provides detailed description known to those skilled in the art being at this.
As shown in Fig. 4 and Fig. 1, the felt that sealing device 20 is arranged in also including the second inside groove 52 of end cap 5
Part 4.Described second inside groove 52 is between described first inside groove 51 and the 3rd inside groove 53.On end cap 5,
From the first end to the second extreme direction, set gradually the first inside groove the 51, second inside groove 52 and the 3rd inside groove 53.
The present invention utilizes cover plate 6, inside contracts ring 7 and outer bullet ring 8, felt member 4 and the common reality of outside framework oil seal 3
Now seal.Cover plate 6 is arranged on the first end of end cap 5, plays the dust-proof effect with partition wear particle of first,
Control cover plate 5 and can efficiently control most of bulky grain abrasion impurity entrance gear-box 1 with the gap of axle 2.In
Contracting ring 7 and outer bullet ring 8 are arranged in the first inside groove 51, inside contract ring 7 and contact with axle 2, outer bullet ring 8 and
The end contact of one inside groove 51, and inside contract ring 7 and outer bullet ring 8 is staggered installation of, play second sealing function.Hair
In piece of felt 4 is arranged in the second inside groove 52, plays the 3rd road and cut off dust and the function of wear particle, especially exist
In some rugged environments, such as slurry environment, wear particle still may be stretched into by liquid, and felt member 4 has
Effect ground impurity screening.Cover plate 6, inside contract ring 7 and outer bullet ring 8 and felt member 4 also acts protection outside framework oil seal
The effect of 3.In the 3rd inside groove 53, it is additionally provided with the outside framework oil seal 3 that the 4th road seals.It also has
Prevent the effect that the lubricant grease in gear housing 1 runs off.This device 20 has versatility, can extensively apply
In needing the drive apparatus sealed.
The foregoing is only the preferred embodiment of the present invention, but scope is not limited thereto, appoint
What those skilled in the art, in technical scope disclosed by the invention, can easily be changed or change, and
This being altered or varied all should be contained within protection scope of the present invention.Therefore, protection scope of the present invention should
It is as the criterion with the protection domain of claims.
Claims (10)
1. one kind is used for the sealing device of end cover on axle, it is characterised in that include being arranged on end cap
In first inside groove and axle can be made to pass at least one of its endoporus inside contract ring and at least one outer plays ring, wherein said
The diameter of bore inside contracting ring is smaller in size than the diameter dimension of described axle, and the outer diameter dimension of described outer bullet ring is more than institute
State the inner diameter size of the first inside groove of end cap, and described in inside contract ring and hand in the axial direction with described outer bullet ring
Alternately arrange.
Sealing device the most according to claim 1, it is characterised in that described in inside contract to be provided with on ring and make
Its first breach disconnected in circumferential direction, described outer bullet ring is provided with make it disconnect in circumferential direction second
Breach, and described second breach is the most misaligned with described first breach.
Sealing device the most according to claim 2, it is characterised in that the openings of described second breach
To inconsistent with the opening direction of described first breach.
Sealing device the most according to claim 3, it is characterised in that described first breach direction is arranged
For with radial parallel, described second breach direction is set to the most at an angle.
Sealing device the most according to claim 2, it is characterised in that described in inside contract ring and/or described outside
Bullet ring is steel loop.
6. according to the sealing device according to any one of claim 1 to 4, it is characterised in that described in inside contract
Ring and described outer bullet ring are set to overlapping contact in radial directions.
Sealing device the most according to claim 6, it is characterised in that described in inside contract ring and described outer bullet
The described overlapping contact district of ring arranges grease.
Sealing device the most according to claim 1, it is characterised in that also include being arranged on described end cap
First end on cover plate.
Sealing device the most according to claim 1, it is characterised in that also include being arranged on described end cap
The 3rd inside groove in outside framework oil seal.
Sealing device the most according to claim 9, it is characterised in that also include being positioned at described first
The felt member in the second inside groove between groove and described 3rd inside groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594585.XA CN103557311B (en) | 2013-11-22 | 2013-11-22 | Sealing device used for sealing end cover on shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310594585.XA CN103557311B (en) | 2013-11-22 | 2013-11-22 | Sealing device used for sealing end cover on shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103557311A CN103557311A (en) | 2014-02-05 |
| CN103557311B true CN103557311B (en) | 2017-01-11 |
Family
ID=50011636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310594585.XA Active CN103557311B (en) | 2013-11-22 | 2013-11-22 | Sealing device used for sealing end cover on shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103557311B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322455A (en) * | 2005-05-16 | 2006-11-30 | Sulzer Pumpen Ag | Centrifugal force pump and its fixed seal |
| CN101093020A (en) * | 2007-08-06 | 2007-12-26 | 刘洪然 | Sealing device for end face of traversing part |
| CN201198899Y (en) * | 2008-05-19 | 2009-02-25 | 宁波中策动力机电集团有限公司 | Mechanical sealing device for shaft |
| CN201731064U (en) * | 2010-08-27 | 2011-02-02 | 段文静 | Fastening type seal ring |
| WO2012152846A1 (en) * | 2011-05-11 | 2012-11-15 | Rheinfelden Alloys Gmbh & Co. Kg | Sealing assembly |
| CN203023451U (en) * | 2012-12-19 | 2013-06-26 | 郑州宇通重工有限公司 | Anti-silt device of power head box body of rotary drilling rig |
| CN203585282U (en) * | 2013-11-22 | 2014-05-07 | 株洲高精传动技术有限公司 | Sealing device for sealing end cover on shaft |
-
2013
- 2013-11-22 CN CN201310594585.XA patent/CN103557311B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006322455A (en) * | 2005-05-16 | 2006-11-30 | Sulzer Pumpen Ag | Centrifugal force pump and its fixed seal |
| CN101093020A (en) * | 2007-08-06 | 2007-12-26 | 刘洪然 | Sealing device for end face of traversing part |
| CN201198899Y (en) * | 2008-05-19 | 2009-02-25 | 宁波中策动力机电集团有限公司 | Mechanical sealing device for shaft |
| CN201731064U (en) * | 2010-08-27 | 2011-02-02 | 段文静 | Fastening type seal ring |
| WO2012152846A1 (en) * | 2011-05-11 | 2012-11-15 | Rheinfelden Alloys Gmbh & Co. Kg | Sealing assembly |
| CN203023451U (en) * | 2012-12-19 | 2013-06-26 | 郑州宇通重工有限公司 | Anti-silt device of power head box body of rotary drilling rig |
| CN203585282U (en) * | 2013-11-22 | 2014-05-07 | 株洲高精传动技术有限公司 | Sealing device for sealing end cover on shaft |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103557311A (en) | 2014-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104067014B (en) | Gear-driven bearing unit | |
| CN102954194A (en) | Railway vehicle traveling gearbox sealing structure | |
| CN204985720U (en) | A sealing device for driven shaft | |
| CN104110480A (en) | Sealing device of speed reducer | |
| CN108258835A (en) | Heavily loaded Self-aligning flame-proof type thin oil lubricant rolling bearing structure | |
| CN204239455U (en) | A kind of doubling sealed bearing | |
| CN205298497U (en) | Vertical installation speed reducer | |
| CN103557311B (en) | Sealing device used for sealing end cover on shaft | |
| CN202193136U (en) | Supporting wheel or guide wheel with combined type mud water sealing structure | |
| CN105526365B (en) | Rotary seal structure | |
| CN205064844U (en) | Rotary mechanism hides oily wear -resisting rotary seal | |
| CN206072132U (en) | Vibrating motor double-layer seal deep groove ball bearing | |
| CN204573052U (en) | The multiple labyrinth seal device of a kind of split type S type | |
| CN202955231U (en) | Novel bearing housing sealing structure | |
| CN203585282U (en) | Sealing device for sealing end cover on shaft | |
| WO2018214848A1 (en) | Sealing assembly | |
| CN205064598U (en) | A bearing assembly and reclaimer for level wheel | |
| CN105351366A (en) | Bearing end cap seal device | |
| CN205371582U (en) | Spacing antifriction structure of axial | |
| CN203670778U (en) | Stirring shaft sealing structure and mortar stirring device | |
| CN102359131A (en) | Grader and drive axle and balance box supporting connecting structure thereof | |
| CN202188130U (en) | Reducer rotating shaft dustproof and greaseproof sealing device | |
| CN203272467U (en) | Bearing lubricating device for traveling wheel of coal mining machine | |
| CN204300314U (en) | Oil sealing mounting structure and retarder | |
| CN108951735A (en) | A kind of pivoting support component and land leveller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20151104 Address after: Dong Jia Duan high-tech park in Hunan province 412002 Zhuzhou city Lusong District Applicant after: Hunan Nanfang Aviation High Precision Transmission Co., Ltd. Address before: Dong Jia Duan high-tech park in Hunan province 412002 Zhuzhou city Lusong District Applicant before: Zhuzhou Gaojing Transmission Technology Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |