CN203585282U - Sealing device for sealing end cover on shaft - Google Patents
Sealing device for sealing end cover on shaft Download PDFInfo
- Publication number
- CN203585282U CN203585282U CN201320744773.1U CN201320744773U CN203585282U CN 203585282 U CN203585282 U CN 203585282U CN 201320744773 U CN201320744773 U CN 201320744773U CN 203585282 U CN203585282 U CN 203585282U
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- Prior art keywords
- ring
- breach
- seal arrangement
- internal
- outer bullet
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- 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 - Lifetime
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- 238000007789 sealing Methods 0.000 title abstract description 25
- 239000004519 grease Substances 0.000 claims abstract description 9
- 230000001050 lubricating effect Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
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- Sealing Devices (AREA)
- General Details Of Gearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a sealing device for sealing an end cover on a shaft. The sealing device comprises at least one internal shrink ring and at least one external bounce ring, wherein the internal shrink rings are arranged in a first internal groove of the end cover, the shaft can penetrate through internal holes of the internal shrink rings, the diameter of the internal holes of the internal shrink rings is smaller than the diameter of the shaft, the external diameter of the external bounce rings is larger than the internal diameter of the first internal groove of the end cover, and the internal shrink rings and the external bounce rings are arranged in an alternate mode in the axial direction and arranged in an overlaid mode in the radial direction. The end cover is further provided with a cover plate, a hair felt piece and a framework oil seal, sealing of a transmission device is guaranteed by the cover plate, the hair felt piece, the framework oil seal, the internal shrink rings and the external bounce rings, namely, lubricating grease in a bearing is prevented from flowing away, and outside dust is also prevented from entering a gear case. The sealing device is simple in structure, convenient to manufacture and good in sealing effect.
Description
Technical field
The utility model relates to the seal arrangement for transmission device, is specially the seal arrangement for end cover on axle.
Background technique
In some transmission device, for example, the gear-box in engineering machinery, relates to sealing configuration between static end cap and the running shaft of outputting power, can prevent that the lubricant grease in bearing runs off, and can prevent that again extraneous dust from entering into the inside of gear-box.Particularly, the transmission device using in severe working environment, the gear-box for example moving in colliery, once sealing damages, causes equipment oil leakage on the one hand, makes lack of lubrication, thereby causes bearing and gear failure; On the other hand, make the impurity such as extraneous dust and earth easily enter the equipment of rotation, enter bearing inside and meshing zone of gears territory, cause bearing and gear failure.Therefore, good Seal Design is the important leverage means that guarantee transmission device operation.
In the prior art, adopt Double-lip framework oil sealing, but this oil seal structure reliability is low, in dust atmosphere, easily damages.The employing labyrinth end cap and the outside framework oil seal acting in conjunction that also have, although comparing independent use outside framework oil seal, reliability improves, but in some liquid and liquid in belt wear impurity situation, mud for example, sealing effect is unreliable, mud is easy to enter outside framework oil seal by labyrinth, thereby causes the damage of outside framework oil seal.
Model utility content
The utility model aims to provide a kind of seal arrangement for end cover on axle, and it has simple in structure, is easy to install low price, the advantages such as applied range.Meanwhile, sealing effect is very good.
According to the seal arrangement for end cover on axle of the present utility model, comprise in the first inside groove that is arranged on end cap and can make that axle passes its endoporus that at least one inside contracts ring and at least one outer bullet ring, the diameter of bore size that wherein inside contracts ring is less than the diameter dimension of axle, the outer diameter size of outer bullet ring is greater than the inner diameter size of the first inside groove of end cap, and inside contracts ring and the alternately setting in the axial direction of outer bullet ring.
In one embodiment, inside contract on ring and be provided with and make its first breach disconnecting in circumferential direction, on outer bullet ring, be provided with and make its second breach disconnecting in circumferential direction, and the second breach does not upwards overlap in week with the first breach.When guaranteeing that inside contracting ring has certain tightening force to axle, make to inside contract ring and install at an easy rate.Meanwhile, guaranteed that outer bullet ring can be arranged in end cap the first inside groove, and contacted with the end of the first inside groove of end cap.
Preferably, the opening direction of the opening direction of the second breach and the first breach is inconsistent.
Preferably, the first breach direction is set to and radial parallel, and the second breach direction is set to radially at an angle.
Preferably, inside contracting ring and/or outer bullet ring is steel loop.
In one embodiment, inside contracting ring is set to overlapping contact in the radial direction with outer bullet ring.Thereby realized sealing.
Preferably, inside contract ring and the overlapping contact area of outer bullet ring lubricating grease is set.So just can effectively cut off dust enter and reduce inside contract ring and outer bullet ring between friction.
In another embodiment, also comprise the cover plate on the first end that is arranged on end cap.The gap of controlling cover plate and axle, can stop dust and oarse-grained wearing and tearing impurity to enter effectively.
According to preferred embodiment, also comprise the outside framework oil seal in the 3rd inside groove that is arranged on end cap.Thereby the lack of lubrication of having avoided equipment oil leakage and having caused, has also stoped impurity to enter simultaneously.
According to a preferred embodiment, also comprise the felt member in the second inside groove between the first inside groove and the 3rd inside groove.Effectively impurity screening, plays sealing effect.
Compared with prior art, the utility model has the advantage of, inside contract ring and outer bullet ring self structure simple, be easy to production and cost low, coordinate and install and can effectively stop dust to enter.Meanwhile, cover plate is set on end cap, felt member is set in the second inside groove and in the 3rd inside groove, outside framework oil seal is set, its synergy, has effectively cut off dust or wear particle and has entered gear-box inside, has guaranteed the sealing of transmission device.Outside framework oil seal can also stop the lubricating grease of gear-box inside to run off.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.In the drawings:
Fig. 1 has shown according to the seal arrangement for end cover on axle of the present utility model;
Fig. 2 has shown the plane view that inside contracts ring according to of the present utility model;
Fig. 3 has shown according to the plane view of outer bullet ring of the present utility model;
Fig. 4 has shown the sectional drawing according to end cap of the present utility model.
In the accompanying drawings, identical parts are used identical reference character.Accompanying drawing is not according to actual scale.
Embodiment
To introduce according to preferred embodiment of the present utility model hereinafter.
Fig. 1 has shown the seal arrangement 20 for end cover on axle.It comprises and inside contracting ring 7 and outer bullet ring 8 in the first inside groove 51 that is arranged on end cap 5.Inside contract ring 7 be configured to circular, as shown in Figure 2.Under its not installation situation, its diameter of bore r
7be less than the outer diameter size R of axle 2
2, for example, the outer diameter R of axle
2for 120mm, and inside contract the diameter of bore r that encircles 7
7size is set to about 119～119.5mm(, r
7compare R
2little 0.5～1mm).Outer bullet ring 8 is configured to circular, as shown in Figure 3.Under its not installation situation, the outer diameter R of outer bullet ring 8
8be greater than the inner diameter r of the first inside groove 51 of end cap 5
51, for example, at the outer diameter R of axle
2in 120mm situation, R
8compare r
51larger about 1～2mm.Inside contracting ring 7 alternately arranges in the axial direction with outer bullet ring 8.Thereby met sealing demand.Understandably, the direction parallel with the axle 2 of gear housing 1 is axially, and the direction vertical with the axle 2 of gear housing 1 is for radially.
As shown in Figure 2, comprise that the first breach 71, the first breach 71 circumferentially will inside contract ring 7 disconnections on 7 inside contracting ring.Preferably, the first breach 71 be arranged so that under installment state two along between perpendicular distance be approximately 1.0～2.0mm.This first breach 71 has guaranteed to inside contract ring 7 and has been installed on axle 2, has guaranteed to inside contract the tightening force of 7 pairs of axles 2 of ring simultaneously, makes to inside contract ring 7 and contacts with axle 2.
As shown in Figure 3, comprise outside the second breach 81 on bullet ring 8, it circumferentially disconnects outer bullet ring 8.For example, the second breach 81 is arranged so that the perpendicular distance between two edges is approximately 0.6～1.2mm under installment state.This second breach 81 has guaranteed that outer bullet ring 8 is arranged in the first inside groove 51 of end cap 5, has also met outer bullet ring 8 and has opened with the end of the first inside groove 51 and contact.
For guaranteeing sealing effect, inside contract ring 7 and outer bullet ring 8 and contact radial direction is overlapping, inside contract the outer diameter R of ring 7
7be greater than the inner diameter r of outer bullet ring 8
8.Preferably, overlapping radial dimension is not less than 4mm.
Seal arrangement 20 comprises that at least one inside contracts ring 7 and at least one outer bullet ring 8, for example can arrange two and inside contract 7 and two outer bullet rings 8 of ring, and inside contract ring 7 and outer bullet ring 8 interlaced arrangement, as shown in Figure 1, in the first inside groove 51 of end cap 5, the axial direction from first end to the second end sets gradually and inside contracts ring 7, outer bullet ring 8, inside contracts ring 7 and outer bullet ring 8.Preferably, in the first inside groove 51 of end cap 5, first end setting inside contracts ring 7.As shown in Figure 1, away from the end of gear housing 1, be first end, near the end of gear housing 1, be the second end.In addition,, for guaranteeing good sealing effect, the first breach 71 and the second breach 81 are not overlapping in radial direction.
The direction of the first breach 71 and the second breach 81 is inconsistent, thereby has guaranteed better sealing effect.For example, direction that can the first breach 71 is set to and inside contracts the radial parallel of ring 7, and the second breach 81 be set to described radially at an angle.It will be understood by those skilled in the art that also can the second breach 81 direction be set to and radial parallel, and the direction of the first breach 71 is with radially at an angle.
Preferably, inside contract ring 7 and outer bullet ring 8 and can use steel making.
The axial dimension of controlling the first inside groove 51 guarantees to inside contract the gap between ring 7 and outer bullet ring 8, and inside contracting ring 7 and lubricating grease is coated in the region that is in contact with one another of outer bullet ring 8, also can seal and inside contract the breach 71 of ring 7 and the breach 81 of outer bullet ring 8 simultaneously, so effectively cut off entering of dust, and reduced the friction inside contracting between ring 7 and outer bullet ring 8.Meanwhile, in the contact area that inside contracts ring 7 and outer bullet ring 8 and the first inside groove 51 and axle 2, coat lubricating grease, improved sealing effect, and reduced the friction that inside contracts ring 7 and outer bullet ring 8 and end cap 5 and axle 2.
Seal arrangement 20 also comprises cover plate 6, and it is fixedly installed on the first end of end cap 5.For example, can cover plate 6 be fixed on end cap 5 by bolt, bolt fastening structure is well known to those skilled in the art, does not therefore illustrate in the drawings.Control the inner diameter (not illustrating in the drawings) of cover plate 6 and the outer diameter size R of axle 2
2between gap, just can realize sealing.Preferably, gap is 1mm, can effectively stop most of big dust particle to enter.
As shown in Fig. 4 and Fig. 1, seal arrangement 20 also comprises the outside framework oil seal 3 in the 3rd inside groove 53 that is arranged on end cap 5.Its lubricant grease in preventing bearing runs off, can also stop impurity to enter gear housing 1 inside.The structure of outside framework oil seal 3 is known those skilled in the art, at this, does not provide detailed description.
As shown in Fig. 4 and Fig. 1, seal arrangement 20 also comprises the felt member 4 of the second inside groove 52 interior settings of end cap 5.Described the second inside groove 52 is between described the first inside groove 51 and the 3rd inside groove 53.On end cap 5, from first end, to the second extreme direction, set gradually the first inside groove 51, the second inside groove 52 and the 3rd inside groove 53.
The utility model utilizes cover plate 6, inside contracts ring 7 and the common realization sealing of outer bullet ring 8, felt member 4 and outside framework oil seal 3.Cover plate 6 is arranged on the first end of end cap 5, plays first and prevents dust and cut off wear particle, and control cover plate 5 can effectively be controlled most of large particle wearing and tearing impurity with the gap of axle 2 and enter gear-box 1.Inside contract ring 7 and outer bullet ring 8 and be arranged in the first inside groove 51, inside contract ring and 7 contact with axle 2, outer bullet ring 8 contacted with the end of the first inside groove 51, and inside contract encircle 7 and outer bullet ring 8 be staggered installation of, a second sealing function.Felt member 4 is arranged in the second inside groove in 52, and Qi tri-roads cut off the function of dust and wear particle, especially in some rugged environments, and slurry environment for example, wear particle still may stretch into by liquid, and felt member 4 is impurity screening effectively.Cover plate 6, inside contract the effect that ring 7 and outer bullet ring 8 and felt member 4 have also played protection outside framework oil seal 3.In the 3rd inside groove 53, be also provided with the outside framework oil seal 3 that Si road seals.It prevents the effect that the lubricant grease in gear housing 1 runs off in addition.This device 20 has versatility, can be widely used in the transmission device that needs sealing.
The foregoing is only preferred implementation of the present utility model; but the utility model protection domain is not limited to this; any those skilled in the art is in the disclosed technical scope of the utility model; can easily change or change, and this change or change and all should be encompassed in protection domain of the present utility model within.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (10)
1. the seal arrangement for end cover on axle, it is characterized in that, comprise in the first inside groove that is arranged on end cap and can make that axle passes its endoporus that at least one inside contracts ring and at least one outer bullet ring, the wherein said diameter of bore size that inside contracts ring is less than the diameter dimension of described axle, the outer diameter size of described outer bullet ring is greater than the inner diameter size of the first inside groove of described end cap, and described in inside contract ring and alternately arrange in the axial direction with described outer bullet ring.
2. seal arrangement according to claim 1, it is characterized in that, described inside contracting on ring is provided with and makes its first breach disconnecting in circumferential direction, be provided with and make its second breach disconnecting in circumferential direction, and described the second breach upwards do not overlap in week with described the first breach on described outer bullet ring.
3. seal arrangement according to claim 2, is characterized in that, the opening direction of the opening direction of described the second breach and described the first breach is inconsistent.
4. seal arrangement according to claim 3, is characterized in that, described the first breach direction is set to and radial parallel, and described the second breach direction is set to radially at an angle.
5. seal arrangement according to claim 2, is characterized in that, described in inside contract ring and/or described outer bullet ring be steel loop.
6. according to the seal arrangement described in any one in claim 1 to 4, it is characterized in that, described in inside contract ring and be set to overlapping contact in the radial direction with described outer bullet ring.
7. seal arrangement according to claim 6, is characterized in that, described in inside contract ring and the described overlapping contact area of described outer bullet ring arranges lubricating grease.
8. seal arrangement according to claim 1, is characterized in that, also comprises the cover plate on the first end that is arranged on described end cap.
9. seal arrangement according to claim 1, is characterized in that, also comprises the outside framework oil seal in the 3rd inside groove that is arranged on described end cap.
10. seal arrangement according to claim 9, is characterized in that, also comprises the felt member in the second inside groove between described the first inside groove and described the 3rd inside groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744773.1U CN203585282U (en) | 2013-11-22 | 2013-11-22 | Sealing device for sealing end cover on shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320744773.1U CN203585282U (en) | 2013-11-22 | 2013-11-22 | Sealing device for sealing end cover on shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203585282U true CN203585282U (en) | 2014-05-07 |
Family
ID=50583209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320744773.1U Expired - Lifetime CN203585282U (en) | 2013-11-22 | 2013-11-22 | Sealing device for sealing end cover on shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203585282U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557311A (en) * | 2013-11-22 | 2014-02-05 | 株洲高精传动技术有限公司 | Sealing device used for sealing end cover on shaft |
-
2013
- 2013-11-22 CN CN201320744773.1U patent/CN203585282U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557311A (en) * | 2013-11-22 | 2014-02-05 | 株洲高精传动技术有限公司 | Sealing device used for sealing end cover on shaft |
| CN103557311B (en) * | 2013-11-22 | 2017-01-11 | 湖南南方宇航高精传动有限公司 | Sealing device used for sealing end cover on shaft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151029 Address after: Dong Jia Duan high-tech park in Hunan province 412002 Zhuzhou city Lusong District Patentee 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 Patentee before: Zhuzhou Gaojing Transmission Technology Co., Ltd. |