CN109322986A - A kind of shaft end oil seal structure of gear-box - Google Patents
A kind of shaft end oil seal structure of gear-box Download PDFInfo
- Publication number
- CN109322986A CN109322986A CN201811479483.2A CN201811479483A CN109322986A CN 109322986 A CN109322986 A CN 109322986A CN 201811479483 A CN201811479483 A CN 201811479483A CN 109322986 A CN109322986 A CN 109322986A
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- Prior art keywords
- oil
- oil sealing
- dynamic
- gear
- box
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Of Bearings (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The invention discloses a kind of shaft end oil seal structures of gear-box, the shaft end oil seal structure includes Oil sealing assembly, the Oil sealing assembly includes dynamic Oil sealing assembly and quiet Oil sealing assembly, the dynamic Oil sealing assembly interts with the quiet Oil sealing assembly to be equipped with, wear-resisting ring is arranged in the rotary shaft, the dynamic Oil sealing assembly is mounted in gear-box transparent cover and is located on the outside of the wear-resisting ring, the dynamic Oil sealing assembly includes the first dynamic oil sealing and the second dynamic oil sealing, the first dynamic oil sealing is arranged far from the rotary shaft shaft end close to box bearing, the second dynamic oil sealing is arranged close to the rotary shaft shaft end；Oil trap and oil return line are additionally provided in the gear-box transparent cover, the oil trap is connected to the oil return line, the first dynamic oil sealing and the second dynamic oil sealing respectively with the oil sump.
Description
Technical field
The present invention relates to oil seal technique fields, and in particular to a kind of shaft end oil seal structure of gear-box.
Background technique
Gear-box is a kind of important transmission parts, and the lubricating system of gear-box has very the normal work of gear-box
Important meaning.In the reason of the gearbox failure, lack of lubrication has accounted for a greater part of.Currently, gear-box generallys use profession
Gear oil lubrication, but the problem of often leaked in use along with gear oil, as shown in Figure 1, the oil of gear-box
Envelope system includes static seal component and dynamic sealing assembly, and each static seal can be real by reasonable end face plane degree combination sealing element
Now reliable leak sealing effect, if shaft end static seal component generallys use O shape rubber seal, O shape rubber seal rings for seal performance is good,
Service life is long, compact-sized and convenient for disassembly and assembly, is not susceptible to leak；And dynamic sealing is many kinds of and due to there are relative motion, because
Usually there is easy oil leakage in this.Control for oil leak is always the research hotspot of machinery industry.Low-speed situations
Under, rotary lip-shaped sealed ring axial dimension and radial dimension are more compact, the processing is simple and sealing is tight, but sealing ring lip
One layer of stable hydrodynamic oil film is hardly formed between the interface of axis, oil film is too thick, and fluid will leak；And oil film is too
It is thin, fluid lubrication film cannot be formed, lip will be worn because of dry friction, and the two is difficult to take into account and cause oil leak,
Environment is not only polluted in oil leak, and oil level deficiency is also resulted in when leaking serious but will cause the service life of gear and bearing
It reduces, causes equipment fault, cause to shut down, stop production, cause huge economic losses to user.
Summary of the invention
The technical problems to be solved by the present invention are: providing a kind of shaft end oil seal structure of gear-box that sealing effect is good.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: a kind of shaft end oil seal structure of gear-box,
Oil sealing assembly including being located at gear-box rotary shaft shaft end, the Oil sealing assembly include dynamic Oil sealing assembly and quiet Oil sealing assembly, institute
It states that Oil sealing assembly and the quiet Oil sealing assembly are interspersed to be equipped with, wear-resisting ring, the dynamic oil sealing is arranged in the rotary shaft
Component is mounted in gear-box transparent cover and is located on the outside of the wear-resisting ring, and the dynamic Oil sealing assembly includes the first dynamic oil sealing and second
Dynamic oil sealing, the first dynamic oil sealing are arranged far from the rotary shaft shaft end close to box bearing, and the second dynamic oil sealing is close
The rotary shaft shaft end setting；
Oil trap and oil return line are additionally provided in the gear-box transparent cover, the oil trap is connected to the oil return line, described
First dynamic oil sealing and the second dynamic oil sealing respectively with the oil sump.
Further, the wear-resisting ring is chromium plating wear-resisting ring.
Preferably, the described first dynamic oil sealing is the secondary lip-type packing of band, and the second dynamic oil sealing is OR type rotating seal.
Preferably, the described first dynamic oil sealing is the secondary lip-type packing of band, and the second dynamic oil sealing is labyrinth seal ring.
Preferably, the quiet Oil sealing assembly includes the first quiet oil sealing and the second quiet oil sealing, and the first quiet oil sealing is mounted on
On the inside of wear-resisting ring, the cabinet of the second quiet oil sealing and gear-box is connected.
Preferably, the first quiet oil sealing and the second quiet oil sealing are O shape rubber seal.
Further, the oil return line is equipped with oil extraction portion, and the oil extraction portion is connected to box house.
Further, it is connected outside the oil return line and cabinet.
The beneficial effects of the present invention are: oil trap collects the oil leak of the first dynamic oil sealing, static oil sealing and high speed rotation
Axis gap can design it is looser, so that fluid lubrication film be more readily formed；It simultaneously can also be dynamic in the first dynamic oil sealing or second
Reinforce lubricant passage way processed between oil sealing and oil trap；It is arranged wear-resisting ring on gear shaft, avoids direct abrased gear axis；Twice are set
Dynamic oil sealing, effectively prevent oil leak, keeps gearbox seals effect more preferable；Oil trap and oil return line are set, and it is extra to collect
Lubricating oil controls oil leak；All movable sealing structures are all disposed in gear-box transparent cover, reduce shaft end and axial dimension.
Detailed description of the invention
Fig. 1 is a kind of fragmentary sectional view of the shaft end oil seal structure of gear-box common in the art；
Fig. 2 is the fragmentary sectional view of the shaft end oil seal structure of the gear-box of the embodiment of the present invention；
Fig. 3 is the partial enlarged view of part A in Fig. 2.
Label declaration:
1, cabinet, 2, single-row tapered roller bearing；3, the first quiet oil sealing；4, gear-box transparent cover；5, wear-resisting ring；6, first is dynamic
Oil sealing；7, the second quiet oil sealing；8, rotary shaft；9, circlip for shaft；10, the second dynamic oil sealing；11, oil trap；12, oil return line.
Specific embodiment
To explain the technical content, the achieved purpose and the effect of the present invention in detail, below in conjunction with embodiment and cooperate attached
Figure is explained.
A kind of shaft end oil seal structure of gear-box, the Oil sealing assembly including being located at gear-box rotary shaft shaft end, the oil sealing
Component includes dynamic Oil sealing assembly and quiet Oil sealing assembly, and the dynamic Oil sealing assembly interts with the quiet Oil sealing assembly to be equipped with, institute
It states and is arranged with wear-resisting ring in rotary shaft, the dynamic Oil sealing assembly is mounted in gear-box transparent cover and is located on the outside of the wear-resisting ring,
The dynamic Oil sealing assembly includes the first dynamic oil sealing and the second dynamic oil sealing, and the first dynamic oil sealing is close far from the rotary shaft shaft end
Box bearing setting, the second dynamic oil sealing are arranged close to the rotary shaft shaft end；
Oil trap and oil return line are additionally provided in the gear-box transparent cover, the oil trap is connected to the oil return line, described
First dynamic oil sealing and the second dynamic oil sealing respectively with the oil sump.
As can be seen from the above description, the beneficial effects of the present invention are: oil trap collects the oil leak of the first dynamic oil sealing, static
The gap of oil sealing and high-speed rotating axis can be designed more loosely, so that fluid lubrication film be more readily formed；It simultaneously can also be first
Reinforce lubricant passage way processed between dynamic oil sealing or the second dynamic oil sealing and oil trap, is arranged wear-resisting ring on gear shaft, avoids direct abrasion
Gear shaft；Twice are set and move oil sealing, effectively prevent oil leak, keeps gearbox seals effect more preferable；Oil trap is set and is returned
Oil circuit collects extra lubricating oil control oil leak；All movable sealing structures are all disposed in gear-box transparent cover, reduce shaft end and
Axial dimension.
Further, the wear-resisting ring is chromium plating wear-resisting ring.
As can be seen from the above description, the beneficial effects of the present invention are: it is coated with layers of chrome on wear-resisting ring, improves the resistance to of wear-resisting ring
Performance is ground, the chromium plating on wear-resistant sleeve reduces production cost compared to the chromium plating on the full part of gear shaft, and is easier to more after wearing
It changes；Chrome layer on wear-resisting ring covers the micro- lines of the machining on wear-resistant sleeve, avoids lubricating oil and is added by the machine of non-chromium plating
The micro- lines of work, which forms pumping effect, leads to oil leak, to further reduced the probability of oil leak generation, multiple-protection makes lubricating oil
Not only oil film is formed between static oil sealing and high-speed rotating axis but also is not made oil film too thick and is revealed.
Preferably, the described first dynamic oil sealing is the secondary lip-type packing of band, and the second dynamic oil sealing is OR type rotating seal.
Preferably, the described first dynamic oil sealing is the secondary lip-type packing of band, and the second dynamic oil sealing is labyrinth seal ring.
Further, the sealing ring of other forms can also be used in the first dynamic oil sealing and the second dynamic oil sealing.
Preferably, the quiet Oil sealing assembly includes the first quiet oil sealing and the second quiet oil sealing, and the first quiet oil sealing is mounted on
On the inside of wear-resisting ring, the cabinet of the second quiet oil sealing and gear-box is connected.
Further, the oil trap is between the described first dynamic oil sealing and the second dynamic oil sealing.
Preferably, the first quiet oil sealing and the second quiet oil sealing are O shape rubber seal.
Further, the oil return line is equipped with oil extraction portion, and the oil extraction portion is connected to box house.
Further, it is connected outside the oil return line and cabinet.
As can be seen from the above description, the beneficial effects of the present invention are: the lubricating oil of collection can both have been flowed back into tooth by oil return line
Recycling inside roller box, can also be led to outside gear-box by oil circuit and separately be collected.
The embodiment of the present invention one are as follows: a kind of shaft end oil seal structure of gear-box, referring to figure 2. and shown in Fig. 3, including position
Oil sealing assembly in gear-box rotary shaft shaft end, Oil sealing assembly include dynamic Oil sealing assembly and quiet Oil sealing assembly, move Oil sealing assembly with
Quiet Oil sealing assembly is interspersed to be equipped with, and chromium plating wear-resisting ring 5 is arranged in rotary shaft 8,5 front of chromium plating wear-resisting ring is additionally provided with axis bullet
Property retaining ring 9 for limiting, it is ensured that the fastness that chromium plating wear-resisting ring 5 is installed, dynamic Oil sealing assembly is mounted in gear-box transparent cover 4 and position
In 5 outside of chromium plating wear-resisting ring, moving Oil sealing assembly includes the first dynamic oil sealing 6 (the secondary lip-type packing of band) and the second dynamic 10 (OR of oil sealing
Type rotating seal), the first dynamic oil sealing 6 is set far from 8 shaft end of rotary shaft close to box bearing (single-row tapered roller bearing 11)
It sets, the second dynamic oil sealing 10 is arranged close to 8 shaft end of rotary shaft；Oil trap 11 and oil return line 12, oil-collecting are additionally provided in gear-box transparent cover 4
Slot 11 is connected to oil return line 12, and the first dynamic oil sealing 6 and the second dynamic oil sealing 10 are connected to oil trap 11 respectively, and oil return line 12 can
It is connected with gear-box inside, can also be connected with gear-box outside so that the lubricating oil that oil return line is collected can be discharged into outside gear-box
Portion can also directly recycle.
Quiet Oil sealing assembly includes the first quiet oil sealing 3 and the second quiet oil sealing 7, and the first quiet oil sealing 3 is mounted on the inside of wear-resisting ring, the
Two quiet oil sealings 7 are connect with the cabinet 1 of gear-box.First quiet oil sealing 3 and the second quiet oil sealing 7 are O shape rubber seal.Oil return line
It is equipped with oil extraction portion, oil return line leads to box house by oil extraction portion.
Sealing ring quantity in above-described embodiment before and after oil trap can also be further added by.
The embodiment of the present invention two are as follows: a kind of shaft end oil seal structure of gear-box, the difference with embodiment one are: the
Two dynamic oil sealings 10 are labyrinth seal ring.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalents made by bright specification and accompanying drawing content are applied directly or indirectly in relevant technical field, similarly include
In scope of patent protection of the invention.
Claims (8)
1. a kind of shaft end oil seal structure of gear-box, it is characterised in that: the Oil sealing assembly including being located at gear-box rotary shaft shaft end,
The Oil sealing assembly includes dynamic Oil sealing assembly and quiet Oil sealing assembly, and the dynamic Oil sealing assembly and the quiet Oil sealing assembly intert cooperation
It is arranged, wear-resisting ring is arranged in the rotary shaft, the dynamic Oil sealing assembly is mounted in gear-box transparent cover and is located at described wear-resisting
Circle outside, the dynamic Oil sealing assembly include the first dynamic oil sealing and the second dynamic oil sealing, and the first dynamic oil sealing is far from the rotary shaft
Shaft end is arranged close to box bearing, and the second dynamic oil sealing is arranged close to the rotary shaft shaft end；
Oil trap and oil return line are additionally provided in the gear-box transparent cover, the oil trap is connected to the oil return line, and described first
Dynamic oil sealing and the second dynamic oil sealing respectively with the oil sump.
2. the shaft end oil seal structure of gear-box according to claim 1, it is characterised in that: the wear-resisting ring is that chromium plating is wear-resisting
Circle.
3. the shaft end oil seal structure of gear-box according to claim 1, it is characterised in that: the first dynamic oil sealing is that band is secondary
Lip-type packing, the second dynamic oil sealing are OR type rotating seal.
4. the shaft end oil seal structure of gear-box according to claim 1, it is characterised in that: the first dynamic oil sealing is that band is secondary
Lip-type packing, the second dynamic oil sealing are labyrinth seal ring.
5. the shaft end oil seal structure of gear-box according to claim 1, it is characterised in that: the oil trap is located at described the
Between one dynamic oil sealing and the second dynamic oil sealing.
6. the shaft end oil seal structure of gear-box according to claim 1, it is characterised in that: the quiet Oil sealing assembly includes the
One quiet oil sealing and the second quiet oil sealing, the first quiet oil sealing are mounted on the inside of wear-resisting ring, the second quiet oil sealing and gear-box
Cabinet connection.
7. the shaft end oil seal structure of gear-box according to claim 6, it is characterised in that: the first quiet oil sealing and the second quiet oil
Envelope is O shape rubber seal.
8. the shaft end oil seal structure of gear-box according to claim 1, it is characterised in that: the oil return line is equipped with oil extraction
Portion, the oil extraction portion are connected to box house.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479483.2A CN109322986A (en) | 2018-12-05 | 2018-12-05 | A kind of shaft end oil seal structure of gear-box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811479483.2A CN109322986A (en) | 2018-12-05 | 2018-12-05 | A kind of shaft end oil seal structure of gear-box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109322986A true CN109322986A (en) | 2019-02-12 |
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ID=65256884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811479483.2A Pending CN109322986A (en) | 2018-12-05 | 2018-12-05 | A kind of shaft end oil seal structure of gear-box |
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| Country | Link |
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| CN (1) | CN109322986A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995004891A1 (en) * | 1993-08-10 | 1995-02-16 | United Technologies Corporation | Reverse pressure tolerant seal means |
| CN202381703U (en) * | 2011-12-22 | 2012-08-15 | 太原重工股份有限公司 | Reducer rotating shaft sealing device |
| CN103925373A (en) * | 2014-04-30 | 2014-07-16 | 湖北新置密封件有限公司 | Labyrinth type halt two-way sealing device |
| CN204201092U (en) * | 2014-10-31 | 2015-03-11 | 湖北新置密封件有限公司 | A kind of bi-directional combination ring gear seal arrangement |
| CN205278312U (en) * | 2015-12-28 | 2016-06-01 | 杭州杰牌传动科技有限公司 | Reducer shaft end movive seal protection architecture |
| CN207814396U (en) * | 2017-09-20 | 2018-09-04 | 北京交通大学 | A kind of novel locomotive gear box combination sealing device |
-
2018
- 2018-12-05 CN CN201811479483.2A patent/CN109322986A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995004891A1 (en) * | 1993-08-10 | 1995-02-16 | United Technologies Corporation | Reverse pressure tolerant seal means |
| CN202381703U (en) * | 2011-12-22 | 2012-08-15 | 太原重工股份有限公司 | Reducer rotating shaft sealing device |
| CN103925373A (en) * | 2014-04-30 | 2014-07-16 | 湖北新置密封件有限公司 | Labyrinth type halt two-way sealing device |
| CN204201092U (en) * | 2014-10-31 | 2015-03-11 | 湖北新置密封件有限公司 | A kind of bi-directional combination ring gear seal arrangement |
| CN205278312U (en) * | 2015-12-28 | 2016-06-01 | 杭州杰牌传动科技有限公司 | Reducer shaft end movive seal protection architecture |
| CN207814396U (en) * | 2017-09-20 | 2018-09-04 | 北京交通大学 | A kind of novel locomotive gear box combination sealing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190212 |
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| RJ01 | Rejection of invention patent application after publication |