CN203962946U - A kind of rotation axis seal structure of gear-box - Google Patents
A kind of rotation axis seal structure of gear-box Download PDFInfo
- Publication number
- CN203962946U CN203962946U CN201420355582.0U CN201420355582U CN203962946U CN 203962946 U CN203962946 U CN 203962946U CN 201420355582 U CN201420355582 U CN 201420355582U CN 203962946 U CN203962946 U CN 203962946U
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- CN
- China
- Prior art keywords
- end cover
- dividing plate
- running shaft
- casing
- gear
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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.)
- Withdrawn - After Issue
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- General Details Of Gearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of rotation axis seal structure of gear-box, comprise casing, end cover, running shaft and solid of rotation, described end cover is fixedly mounted on one end of casing, one end of running shaft is positioned at casing, the other end overhangs outside casing through the center hole of end cover, between running shaft and the center hole of end cover, there is clearance seal, described solid of rotation is arranged on the outer end of running shaft, the arranged outside of described end cover has unsettled dividing plate, unsettled dividing plate has endoporus, described inner hole sleeve on running shaft and and running shaft between leave annular space, between one side of unsettled dividing plate and end cover, form atmospheric area, between the opposite side of unsettled dividing plate and solid of rotation, form allobar, annular space is communicated with atmospheric area and allobar.The utility model can be eliminated pressure reduction, avoids causing gear-box clearance seal leakage loss phenomenon.
Description
Technical field
The utility model relates to a kind of rotation axis seal of gear-box, in particular for rotating part clearance sealing structure.
Background technique
The high speed shaft of gear-box, because design needs, on complete machine, need to connect a brake disc that diameter is larger, but because of installing space restriction, brake disc distance High-speed hubcap (corresponding to the gap sealed aperture position of high speed shaft) is very little, and as the wind-powered electricity generation complete machine of certain MW class, its brake disc diameter reaches 930mm, be installed to after wind power gear case high speed axis, the spacing of distance High-speed hubcap only has 140mm left and right.And in complete machine using process, the High Rotation Speed of high speed shaft, drive brake disc High Rotation Speed, affected by brake disc centrifugal force and Bernoulli effect, near brake disc, produced a negative pressuren zone, the gas of braking core portion is braked dish and outwards throws away, and causes disc centres position (near high speed shaft surface portion) negative pressure very large.For conventional high speed shaft clearance seal, because clearance opening is in high speed shaft end cap, conventionally near high speed shaft surface, and nearer apart from brake disc, under the impact of negative pressure, the lubricant oil in high speed shaft clearance seal or gas mixture are extracted out along gap, cause seal failure, cause seepage.
For improving the reliability of high speed shaft seal, Ge Jia research unit and gear-box producer, a large amount of research and modification in construction have all been done, but the overwhelming majority around how improving gap sealed structure carries out, as improve drainback passage, labyrinth shape, gap length, get rid of oily structure etc., or increase the modes such as contact sealing, because of the system of failing, consider the impact of clearance seal external pressure and cannot effect a radical cure seepage.In the patent that is ZL201120525968 in China Patent No., a kind of gear case sealing device is disclosed.Its utilization arranges spill port on lubricating ring, makes in lubricant oil backflow gear-box; And in labyrinth seal outer end arranges cascade sealing outer shroud and cascade sealing, ring forms the gap dwindling step by step, makes to be discharged to the external world after pressurized gas throttling, step-down; In the patent that is ZL201120523043 in China Patent No., in the oil circuit both sides of running shaft, be respectively provided with 2 ~ 3 road circular grooves, nicked annular piston ring is respectively installed in each circular groove, strengthened the effect of sealing.Above-mentioned two patents all can only gear-box inside sealing configuration carried out improvement, optimization, although it has certain effect to sealability, lack the concern to external environment condition.When running into sealed external, exist while causing the situation of negative pressure (as the High Rotation Speed of major diameter part) by other reasons, still have the risk of leakage loss.
Summary of the invention
The purpose of this utility model is to provide a kind ofly can eliminate pressure reduction, avoids causing the rotation axis seal structure of gear-box of the clearance seal leakage loss phenomenon of gear-box.
To achieve these goals, the technical solution of the utility model is: a kind of rotation axis seal structure of gear-box, comprise casing, end cover, running shaft and solid of rotation, described end cover is fixedly mounted on one end of casing, one end of running shaft is positioned at casing, the other end overhangs outside casing through the center hole of end cover, between running shaft and the center hole of end cover, there is clearance seal, described solid of rotation is arranged on the outer end of running shaft, the arranged outside of described end cover has unsettled dividing plate, unsettled dividing plate has endoporus, described inner hole sleeve on running shaft and and running shaft between leave annular space, between one side of unsettled dividing plate and end cover, form atmospheric area, between the opposite side of unsettled dividing plate and solid of rotation, form allobar, annular space is communicated with atmospheric area and allobar.
Described unsettled dividing plate is fixedly connected on end cover by sleeve pipe and dividing plate fixing bolt, and casing pipe sleeve is on dividing plate fixing bolt, and between unsettled dividing plate and end cover.
Described unsettled dividing plate is fixedly connected on casing.
Described end cover is fixedly mounted on one end of casing by end cap fixing bolt.
Described annular space radial dimension be 0.2～2mm.。
The axial width of described atmospheric area is not less than 5mm.
Technique effect: the utility model utilizes unsettled dividing plate, the allobar that conventional end cover external cause large-diameter revolving body High Rotation Speed is formed, be divided into an allobar dwindling and an atmospheric area, guarantee the normal barometric pressure outside end cover, stopped the conventional clearance seal leakage loss problem causing due to pressure reduction impact.
Accompanying drawing explanation
The embodiment who provides below in conjunction with accompanying drawing is described in further detail the utility model.
Fig. 1 is the schematic diagram of the rotation axis seal structure of gear-box of the present utility model;
Fig. 2 is the local amplification view of the Z portion of Fig. 1.
Embodiment
As Fig. 1, shown in 2, the rotation axis seal structure of gear-box of the present utility model, comprise casing 8, end cover 7, running shaft 2 and solid of rotation 1, described end cover 7 is fixedly mounted on one end of casing 8, one end of running shaft 2 is positioned at casing 8, the other end overhangs outside casing 8 through the center hole of end cover 7, between the center hole of running shaft 2 and end cover 7, there is clearance seal b, described solid of rotation 1 is arranged on the outer end of running shaft 2, the arranged outside of described end cover 7 has unsettled dividing plate 4, unsettled dividing plate 4 has endoporus, described inner hole sleeve on running shaft 2 and and running shaft 2 between leave annular space c, between one side of unsettled dividing plate 4 and end cover 7, form atmospheric area a, between the opposite side of unsettled dividing plate 4 and solid of rotation 1, form allobar d, annular space c is communicated with atmospheric area a and allobar d.
As shown in Figure 1, 2, described unsettled dividing plate 4 is fixedly connected on end cover 7 by sleeve pipe 5 and dividing plate fixing bolt 3, and sleeve pipe 5 is enclosed within on dividing plate fixing bolt 3, and between unsettled dividing plate 4 and end cover 7.Or described unsettled dividing plate 4 is fixedly connected on casing 8.
As shown in Figure 1, described end cover 7 is fixedly mounted on one end of casing 8 by end cap fixing bolt 6.
As shown in Figure 2, described annular space c radial dimension be 0.2～2mm.
As shown in Figure 2, the axial width of described atmospheric area a is not less than 5mm.
The utility model is for the rotation axis seal of wind turbine gearbox.Also for the rotation axis seal of other gear-box.
Claims (6)
1. the rotation axis seal structure of a gear-box, comprise casing (8), end cover (7), running shaft (2) and solid of rotation (1), described end cover (7) is fixedly mounted on one end of casing (8), one end of running shaft (2) is positioned at casing (8), the other end overhangs outside casing (8) through the center hole of end cover (7), between the center hole of running shaft (2) and end cover (7), there is clearance seal (b), described solid of rotation (1) is arranged on the outer end of running shaft (2), it is characterized in that:
The arranged outside of described end cover (7) has unsettled dividing plate (4), unsettled dividing plate (4) has endoporus, described inner hole sleeve at running shaft (2) upper and and running shaft (2) between leave annular space (c), between one side of unsettled dividing plate (4) and end cover (7), form atmospheric area (a), between the opposite side of unsettled dividing plate (4) and solid of rotation (1), form allobar (d), annular space (c) is communicated with atmospheric area (a) and allobar (d).
2. the rotation axis seal structure of gear-box according to claim 1, it is characterized in that: described unsettled dividing plate (4) is fixedly connected on end cover (7) by sleeve pipe (5) and dividing plate fixing bolt (3), it is upper that sleeve pipe (5) is enclosed within dividing plate fixing bolt (3), and be positioned between unsettled dividing plate (4) and end cover (7).
3. the rotation axis seal structure of gear-box according to claim 1, is characterized in that: described unsettled dividing plate (4) is fixedly connected on casing (8).
4. gear case sealing structure according to claim 1, is characterized in that: described end cover (7) is fixedly mounted on one end of casing (8) by end cap fixing bolt (6).
5. the rotation axis seal structure of gear-box according to claim 1, is characterized in that: the radial dimension of described annular space (c) is 0.2～2mm.
6. the rotation axis seal structure of gear-box according to claim 1, is characterized in that: the axial width of described atmospheric area (a) is not less than 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355582.0U CN203962946U (en) | 2014-06-30 | 2014-06-30 | A kind of rotation axis seal structure of gear-box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420355582.0U CN203962946U (en) | 2014-06-30 | 2014-06-30 | A kind of rotation axis seal structure of gear-box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962946U true CN203962946U (en) | 2014-11-26 |
Family
ID=51923530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420355582.0U Withdrawn - After Issue CN203962946U (en) | 2014-06-30 | 2014-06-30 | A kind of rotation axis seal structure of gear-box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074957A (en) * | 2014-06-30 | 2014-10-01 | 南车戚墅堰机车车辆工艺研究所有限公司 | Rotating shaft sealing method of gear box and sealing structure thereof |
-
2014
- 2014-06-30 CN CN201420355582.0U patent/CN203962946U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074957A (en) * | 2014-06-30 | 2014-10-01 | 南车戚墅堰机车车辆工艺研究所有限公司 | Rotating shaft sealing method of gear box and sealing structure thereof |
| CN104074957B (en) * | 2014-06-30 | 2016-07-06 | 南车戚墅堰机车车辆工艺研究所有限公司 | The rotation axis seal method of gear-box and sealing structure thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160706 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |