CN104214348A - Shaft seal structure for speed reducer - Google Patents
Shaft seal structure for speed reducer Download PDFInfo
- Publication number
- CN104214348A CN104214348A CN201410523553.5A CN201410523553A CN104214348A CN 104214348 A CN104214348 A CN 104214348A CN 201410523553 A CN201410523553 A CN 201410523553A CN 104214348 A CN104214348 A CN 104214348A
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- CN
- China
- Prior art keywords
- speed reducer
- shaft seal
- seal structure
- spring seat
- end cap
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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.)
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Abstract
The invention discloses a shaft seal structure for a speed reducer. The shaft seal structure is arranged between a shaft body and an end cover at a shaft end of the speed reducer. The shaft seal structure for the speed reducer is characterized by comprising a static assembly and a rotating assembly, wherein the static assembly is arranged between the shaft body and the end cover by a sleeving manner and is also fixed to the end cover; the rotating assembly is arranged between the shaft body and the end cover by the sleeving manner and is also fixed to the shaft body; one end surface of the rotating assembly is arranged against the static assembly. The shaft seal structure for the speed reducer, the shaft slipping and floating preventing type integrated shaft seal design is adopted, the connection between the end cover of the speed reducer, the shaft seal and the shaft body is performed by a static sealing manner, the shaft seal body oppositely moves, and therefore, a reversing force can be avoided producing between the end cover of the speed reducer and the shaft body, and as a result, the sealing performance is improved.
Description
Technical field
The present invention relates to braking technique field, be specifically related to a kind of shaft seal structure for speed reducer.
Background technique
C2AB belt conveyer is widely used in current coal handling system unloads seam, and coal is all transported to coal yard by it from harbour ship unloaders, and the transport single channel total length of this kind of C2AB belt conveyer can reach 3700m, and every road belt is all furnished with many speed reducers.
But; in the time of speed reducer real-world operation; there is the oil leakage phenomenon of speed reducer axis body (described axis body can be high speed shaft or the lower velocity shaft of speed reducer) axial end; what its reason was to adopt between the axis body of every speed reducer and speed reducer end cap is the sealing means of outside framework oil seal; sealing effect variation especially poor in operating mode or oil sealing run up in the situation that; to such an extent as to need frequent shutdown to refuel; once oil product is supplied not in time also by causing the too low bearing burnt causing of oil level, affects the stable operation of coal handling system.
As can be seen here, stopping the leakage of oil hidden danger at speed reducer axle head place, is the problem that those skilled in the art need solution badly.
Summary of the invention
The object of the present invention is to provide a kind of shaft seal structure for speed reducer, can improve the sealing of axial end, avoid axial end leakage of oil.
In order to achieve the above object, the present invention is achieved through the following technical solutions:
For a shaft seal structure for speed reducer, it is arranged between the axis body and end cap of speed reducer, it is characterized in that, this shaft seal structure that is used for speed reducer comprises:
Stationary components, it is sheathed between described axis body and end cap, and is fixed on described end cap;
Swivel assembly, it is sheathed between described axis body and end cap, and is fixed on described axis body, and one end offsets with described stationary components, makes to form sealing between end cap and axis body, avoids axis body to have a contest with end cap generation in the running simultaneously.
The above-mentioned shaft seal structure for speed reducer, wherein: between described axis body outer wall and described swivel assembly internal face, be provided with back-up ring.
The above-mentioned shaft seal structure for speed reducer, wherein, described stationary components comprises:
Stationary ring, it is sheathed between described axis body and end cap, and is fixed on described end cap;
Packing ring, it is sheathed between described end cap and stationary ring, fixed static ring.
The above-mentioned shaft seal structure for speed reducer, wherein:
Described stationary ring adopts Langaloy material to make.
The above-mentioned shaft seal structure for speed reducer, wherein, described swivel assembly comprises:
Spring seat, it comprises axle sleeve and is located at the shaft shoulder in the outer wall of described axle sleeve one end; Described spring socket sleeve is located between described axis body and end cap, and is fixed on described axis body;
Rotating ring group, it is sheathed between described spring seat axle sleeve and end cap, and one end is fixedly connected with the shaft shoulder of described spring seat, and its other end and described stationary components offset.
The above-mentioned shaft seal structure for speed reducer, wherein, this shaft seal structure that is used for speed reducer also comprises:
Cock screw, it,, through the described spring seat shaft shoulder, is fixed on spring seat on axis body.
The above-mentioned shaft seal structure for speed reducer, wherein, described rotating ring group comprises:
Cutting ferrule, it is sheathed between described spring seat axle sleeve and end cap, and inner wall surface thereof contacts with described spring seat axle sleeve outer wall, and one end is fixedly connected with the shaft shoulder of described spring seat;
Movable sheath, it is sheathed on outside described spring seat axle sleeve, and inner wall surface thereof contacts with described spring seat axle sleeve outer wall, and one end and described cutting ferrule offset, and its other end and described stationary components offset.
The above-mentioned shaft seal structure for speed reducer, wherein, this shaft seal structure that is used for speed reducer also comprises:
Transmission screw, is connected and fixed by described transmission screw between described cutting ferrule and the spring seat shaft shoulder.
The above-mentioned shaft seal structure for speed reducer, wherein, this shaft seal structure that is used for speed reducer also comprises:
Elastic component, it is located between described cutting ferrule and the spring seat shaft shoulder, and one side and described cutting ferrule offset, and its opposite side and the described spring seat shaft shoulder offset.
The above-mentioned shaft seal structure for speed reducer, wherein: between described cutting ferrule internal face and described spring seat axle sleeve outer wall, be provided with back-up ring.
The present invention compared with prior art has the following advantages:
1, adopt anti-axle to alter unsteady comprehensive shaft seal design, making shaft seal is all static seal with speed reducer end cap and shaft seal with being connected of axis body, and shaft seal body does relative motion, and has avoided producing and having a contest between the end cap of speed reducer and axis body, has strengthened sealing;
2, provide internal force Compensation Regulation by elastic component to stationary components and swivel assembly, make end cap little to the reaction of axle head situation, improve Leakage;
3, under high-speed case, adopt this shaft seal structure more can effectively reduce surface friction drag, guarantee on axis body without relative movement, eliminate the wearing and tearing to axle journal, improve the reliability of equipment.
Brief description of the drawings
Fig. 1 is embodiments of the invention structural representation.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the present invention is further elaborated.
For a shaft seal structure for speed reducer, it is arranged between the axis body 5 and end cap at speed reducer axle head place, and it comprises: stationary components, and it is sheathed between described axis body 5 and end cap, and is fixed on described end cap; Swivel assembly, it is sheathed between described axis body 5 and end cap, and is fixed on described axis body 5, and one end offsets with described stationary components, makes to form and seal between end cap and axis body 5, avoids axis body 5 to have a contest with end cap generation in the running simultaneously.
Described stationary components comprises: the stationary ring 2 that adopts Langaloy material to make, and it is sheathed between described axis body 5 and end cap, and is fixed on described end cap; L-type packing ring 1, it is sheathed between described end cap and stationary ring 2, fixed static ring 2.
Described swivel assembly comprises: spring seat 7, it comprises axle sleeve and is located at the shaft shoulder in the outer wall of described axle sleeve one end, described spring seat 7 is sheathed between described axis body 5 and end cap, and be fixed on described axis body 5 by 4 interior hexagon concave-end locking screws 9, between described axis body 5 outer wall and described spring seat 7 internal faces, be provided with O type circle 71; Rotating ring group, it is sheathed between described spring seat 7 axle sleeves and end cap, and one end is fixedly connected with the shaft shoulder of described spring seat 7, and its other end and described stationary components offset.
Described rotating ring group comprises: cutting ferrule 4, it is sheathed between described spring seat 7 axle sleeves and end cap, inner wall surface thereof contacts with described spring seat 7 axle sleeve outer wall, one end is fixedly connected with the shaft shoulder of described spring seat 7 by 4 transmission screws 6, between described cutting ferrule 4 internal faces and described spring seat 7 axle sleeve outer wall, is provided with O type circle 41; Movable sheath 3, it is sheathed on outside described spring seat 7 axle sleeves, and inner wall surface thereof contacts with described spring seat 7 axle sleeve outer wall, and one end and described cutting ferrule 4 offset, and its other end and described stationary components offset.
The shaft seal structure of described speed reducer also comprises: 16 springs 8, it is located between described cutting ferrule 4 and spring seat 7 shaft shoulders, one side and described cutting ferrule 4 offset, its opposite side and described spring seat 7 shaft shoulders offset, to ensure the engaging force between stationary components and swivel assembly, and stressed even, axle is altered in 1mm axle jumping 0.1mm and is all had not big harm.
The present invention has adopted anti-axle to alter unsteady comprehensive shaft seal design, and making shaft seal is all static seal with speed reducer end cap and shaft seal with being connected of axis body, and shaft seal body does relative motion, and has avoided producing and having a contest between speed reducer end cap and axis body, has strengthened sealing; Provide internal force Compensation Regulation by elastic component to stationary components and swivel assembly, make end cap little to the reaction of axle head situation, improve Leakage; Under high-speed case, adopt this shaft seal structure more can effectively reduce surface friction drag, guarantee on axis body without relative movement, eliminate the wearing and tearing to axle journal, improve the reliability of equipment.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.Read after foregoing those skilled in the art, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. for a shaft seal structure for speed reducer, it is arranged between the axis body (5) and end cap at speed reducer axle head place, it is characterized in that, this shaft seal structure that is used for speed reducer comprises:
Stationary components, it is sheathed between described axis body (5) and end cap, and is fixed on described end cap;
Swivel assembly, it is sheathed between described axis body (5) and end cap, and it is upper to be fixed on described axis body (5), and one end and described stationary components offset, make to form sealing between end cap and axis body (5), avoid axis body (5) to produce and have a contest with end cap in the running simultaneously.
2. the shaft seal structure for speed reducer as claimed in claim 1, is characterized in that: between described axis body (5) outer wall and described swivel assembly internal face, be provided with back-up ring (71).
3. the shaft seal structure for speed reducer as claimed in claim 1, is characterized in that, described stationary components comprises:
Stationary ring (2), it is sheathed between described axis body (5) and end cap, and is fixed on described end cap;
Packing ring (1), it is sheathed between described end cap and stationary ring (2), fixed static ring (2).
4. the shaft seal structure for speed reducer as claimed in claim 3, is characterized in that:
Described stationary ring (2) adopts Langaloy material to make.
5. the shaft seal structure for speed reducer as claimed in claim 1, is characterized in that, described swivel assembly comprises:
Spring seat (7), it comprises axle sleeve and is located at the shaft shoulder in the outer wall of described axle sleeve one end; Described spring seat (7) is sheathed between described axis body (5) and end cap, and is fixed on described axis body (5);
Rotating ring group, it is sheathed between described spring seat (7) axle sleeve and end cap, and one end is fixedly connected with the shaft shoulder of described spring seat (7), and its other end and described stationary components offset.
6. the shaft seal structure for speed reducer as claimed in claim 5, is characterized in that, this shaft seal structure that is used for speed reducer also comprises:
Cock screw (9), it,, through described spring seat (7) shaft shoulder, is fixed on spring seat (7) on axis body (5).
7. the shaft seal structure for speed reducer as claimed in claim 5, is characterized in that, described rotating ring group comprises:
Cutting ferrule (4), it is sheathed between described spring seat (7) axle sleeve and end cap, and inner wall surface thereof contacts with described spring seat (7) axle sleeve outer wall, and one end is fixedly connected with the shaft shoulder of described spring seat (7);
Movable sheath (3), it is sheathed on outside described spring seat (7) axle sleeve, and inner wall surface thereof contacts with described spring seat (7) axle sleeve outer wall, and one end and described cutting ferrule (4) offset, and its other end and described stationary components offset.
8. the shaft seal structure for speed reducer as claimed in claim 7, is characterized in that, this shaft seal structure that is used for speed reducer also comprises:
Transmission screw (6), is connected and fixed by described transmission screw (6) between described cutting ferrule (4) and spring seat (7) shaft shoulder.
9. the shaft seal structure for speed reducer as claimed in claim 7, is characterized in that, this shaft seal structure that is used for speed reducer also comprises:
Elastic component (8), it is located between described cutting ferrule (4) and spring seat (7) shaft shoulder, and one side and described cutting ferrule (4) offset, and its opposite side and described spring seat (7) shaft shoulder offset.
10. the shaft seal structure for speed reducer as claimed in claim 7, is characterized in that: between described cutting ferrule (4) internal face and described spring seat (7) axle sleeve outer wall, be provided with back-up ring (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523553.5A CN104214348A (en) | 2014-10-08 | 2014-10-08 | Shaft seal structure for speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523553.5A CN104214348A (en) | 2014-10-08 | 2014-10-08 | Shaft seal structure for speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104214348A true CN104214348A (en) | 2014-12-17 |
Family
ID=52096123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410523553.5A Pending CN104214348A (en) | 2014-10-08 | 2014-10-08 | Shaft seal structure for speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214348A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876700A (en) * | 2022-06-13 | 2022-08-09 | 大唐雅安电力开发有限公司 | Water turbine maintenance sealing method and device based on air sealing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0149895A1 (en) * | 1983-12-01 | 1985-07-31 | Flexibox Limited | Backup seal |
| CN87202941U (en) * | 1987-03-03 | 1988-06-22 | 乌鲁木齐石油化工总厂 | Anti-evacuation machinery sealing |
| CN2072620U (en) * | 1990-08-27 | 1991-03-06 | 夏新龙 | High-floatability machinery seal |
| CN1166581A (en) * | 1996-05-29 | 1997-12-03 | 及同寅 | Mechanical sealing part for devitrified glass and its production method |
| CN2663741Y (en) * | 2003-12-23 | 2004-12-15 | 沈阳高新密封技术研究所 | Quick setting complete enclosed packaging type machinery seal device |
| CN103322200A (en) * | 2013-07-09 | 2013-09-25 | 朱兴生 | Spindle head sealing structure of speed reducer of pumping unit |
| CN204187004U (en) * | 2014-10-08 | 2015-03-04 | 江苏大唐国际吕四港发电有限责任公司 | A kind of shaft seal structure for speed reducer |
-
2014
- 2014-10-08 CN CN201410523553.5A patent/CN104214348A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0149895A1 (en) * | 1983-12-01 | 1985-07-31 | Flexibox Limited | Backup seal |
| CN87202941U (en) * | 1987-03-03 | 1988-06-22 | 乌鲁木齐石油化工总厂 | Anti-evacuation machinery sealing |
| CN2072620U (en) * | 1990-08-27 | 1991-03-06 | 夏新龙 | High-floatability machinery seal |
| CN1166581A (en) * | 1996-05-29 | 1997-12-03 | 及同寅 | Mechanical sealing part for devitrified glass and its production method |
| CN2663741Y (en) * | 2003-12-23 | 2004-12-15 | 沈阳高新密封技术研究所 | Quick setting complete enclosed packaging type machinery seal device |
| CN103322200A (en) * | 2013-07-09 | 2013-09-25 | 朱兴生 | Spindle head sealing structure of speed reducer of pumping unit |
| CN204187004U (en) * | 2014-10-08 | 2015-03-04 | 江苏大唐国际吕四港发电有限责任公司 | A kind of shaft seal structure for speed reducer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114876700A (en) * | 2022-06-13 | 2022-08-09 | 大唐雅安电力开发有限公司 | Water turbine maintenance sealing method and device based on air sealing |
| CN114876700B (en) * | 2022-06-13 | 2024-02-13 | 大唐雅安电力开发有限公司 | Water turbine maintenance sealing method based on air sealing |
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Application publication date: 20141217 |
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| RJ01 | Rejection of invention patent application after publication |