CN203560407U - Non-contact sealing structure for gearbox and gearbox - Google Patents

Non-contact sealing structure for gearbox and gearbox Download PDF

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Publication number
CN203560407U
CN203560407U CN201320739203.3U CN201320739203U CN203560407U CN 203560407 U CN203560407 U CN 203560407U CN 201320739203 U CN201320739203 U CN 201320739203U CN 203560407 U CN203560407 U CN 203560407U
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CN
China
Prior art keywords
oil
gear
box
gap
fluid
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Expired - Fee Related
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CN201320739203.3U
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Chinese (zh)
Inventor
李建平
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Beijing Zhongche Nankow Machinery Co. Ltd.
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BEIJING NANKOU RAILWAY TRANSIT MACHINERY Co Ltd
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Priority to CN201320739203.3U priority Critical patent/CN203560407U/en
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Abstract

The utility model provides a non-contact sealing structure for a gearbox and the gearbox. The non-contact sealing structure comprises a movable ring and a fixed ring, wherein the movable ring is arranged on a rotating shaft in the gearbox in a sleeved mode and rotates along with the rotating shaft, the fixed ring is fixed relative to a box body of the gearbox. The periphery of the movable ring is sleeved with the fixed ring so that an oil cavity for containing lubricating oil, a first labyrinth structure for preventing oil in the oil cavity from leakage, an oil return cavity for enabling oil leaking out of the first labyrinth structure to flow back into the gearbox, and a second labyrinth structure for preventing oil in the oil return cavity from leakage can be sequentially formed between the movable ring and the fixed ring in the oil leaking direction. According to the non-contact sealing structure for the gearbox and the gearbox, the movable ring and the fixed ring are arranged, the oil cavity, the first labyrinth structure, the oil return cavity and the second labyrinth structure are formed, and therefore the gearbox has a good sealing effect and is convenient to assemble, disassemble and maintain.

Description

Non-contact seal structure and gear-box for gear-box
Technical field
The utility model relates to the sealing technique of mechanical structure, relates in particular to non-contact seal structure and gear-box for a kind of gear-box.
Background technique
Along with the speed per hour of bullet train, city rail vehicle progressively improves, their driving gearbox changes splashing oil lubrication into by grease lubrication, for prevent that lubricant oil in casing from leaking outside and casing outside water ash enter gear case body, between gear case body and rotatingshaft, the certain sealing configuration of normal employing seals, in prior art, along with the raising of rotatingshaft rotating speed, the sealing configuration between rotatingshaft and gear-box generally adopts the non-contacting sealing structure without wearing and tearing.
But, in the various non-contacting sealing structures that exist at present, some good sealing effect but assembling and dismounting comparatively difficult, to maintenance, make troubles, and some assembling and easy accessibility, but sealing effect is bad, has leakage problem.
Model utility content
The utility model provides non-contact seal structure and gear-box for a kind of gear-box, makes gear-box have good sealing effect, is convenient to again dismounting and maintenance.
The utility model provides a kind of gear-box non-contact seal structure, comprises and is set in gear-box on rotatingshaft and the rotating ring and the fixed stationary ring of relatively described gear case body that with described rotatingshaft, rotate;
Described stationary ring is set in the outer rim of described rotating ring, so that the direction leaking by fluid between described rotating ring and described stationary ring forms to hold the oil pocket of lubricant oil, the first labyrinth structure leaking in order to the fluid stoping in described oil pocket, use successively so that the second labyrinth structure that the fluid that described the first labyrinth structure leaks flows back to the oil back chamber in described gear-box and stops the fluid in described oil back chamber to leak.
Gear-box as above, with in non-contact seal structure, is communicated with and is provided with oil inlet hole with described oil pocket, for making lubricant oil enter described oil pocket by described oil inlet hole;
Be communicated with and be provided with drainback passage with described oil back chamber, use so that the fluid in described oil back chamber is back in the fuel tank of described gear-box by described drainback passage.
Gear-box as above is with in non-contact seal structure, is provided with bearing housing, for the outer shroud of described rotatingshaft upper bearing (metal) is installed on described gear case body for wearing in the axis hole of described rotatingshaft;
Described oil inlet hole is arranged on the upper position of described bearing housing, and described drainback passage is arranged on the lower position of described bearing housing.
Gear-box as above is with in non-contact seal structure, and described axis hole arranged outside has end cap, and described end cap is fixedly connected with described bearing housing;
Described stationary ring comprises set retaining ring on described end cap and described end cap.
Gear-box as above, with in non-contact seal structure, is provided with seal ring between described bearing housing and described end cap, to prevent that fluid is from the clearance leakage between described bearing housing and described end cap;
Between described bearing housing and described end cap, be also provided with gap spacer, for adjusting the axial clearance of described bearing.
Gear-box as above, with in non-contact seal structure, in described oil pocket, is provided with first conical surface on described rotating ring, make fluid in described oil pocket get rid of to splash treat on lubricating structure in order to the centrifugal guiding effect producing by described the first conical surface rotation.
Gear-box as above is with in non-contact seal structure, and described the first labyrinth structure comprises the first gap and the dilatation chamber forming between described rotating ring and described stationary ring;
In described dilatation chamber, on described rotating ring, near the position in described the first gap, be provided with second conical surface, the first gap described in the mist of oil wall shutoff forming in order to the centrifugal guiding effect producing by described the second conical surface rotation;
In described dilatation chamber, on described rotating ring, be provided with the having three pyramidal faces relative with described second conical surface, use so that the fluid in described dilatation chamber arrives the predeterminated position of described oil back chamber by the rotation impelling of described having three pyramidal faces.
Gear-box as above is with in non-contact seal structure, in described oil back chamber, be provided with and make fluid flow back into smoothly the first oil groove and the second oil groove in described gear-box by described drainback passage, the centrifugal guiding effect impelling that the fluid in described dilatation chamber produces by described having three pyramidal faces rotation is in described the first oil groove and described the second oil groove.
In described oil back chamber, position near described dilatation chamber on described rotating ring is provided with the 4th conical surface, and the mist of oil wall forming in order to the centrifugal guiding effect producing by described the 4th conical surface rotation stops the fluid of described the first labyrinth structure to described oil back chamber internal leakage.
Gear-box as above is with in non-contact seal structure, and described the second labyrinth structure comprises the second gap and the roundabout gap forming between described rotating ring and described stationary ring; So that the fluid by described the second slot leakage in described oil back chamber enters into described roundabout gap, the fluid in described roundabout gap can flow back into described oil back chamber;
In described the second gap, on described rotating ring, be provided with the 5th conical surface, the second gap described in the mist of oil wall shutoff forming in order to the centrifugal guiding effect producing by described the 5th conical surface rotation.
Gear-box as above, with in non-contact seal structure, is also formed with to stop the impurity in described gear-box outside to enter into the 3rd labyrinth structure in described gear-box between described stationary ring and described rotating ring.
Gear-box as above is with in non-contact seal structure, described the 3rd labyrinth structure comprises the 3rd gap and the separate cavities forming between described stationary ring and described rotating ring, the impurity in described gear-box outside can enter into described separate cavities by described the 3rd gap, and the ash discharge passage arranging from the bottom of described separate cavities is discharged.
Gear-box as above is with in non-contact seal structure, and the position near described the 3rd gap on described rotating ring is provided with the 6th conical surface, the 3rd gap described in the aerosol wall shutoff forming in order to the centrifugal guiding effect producing by described the 6th conical surface rotation.
The utility model also provides a kind of gear-box, comprises gear-box non-contact seal structure as above.
Non-contact seal structure and gear-box for the gear-box that the utility model provides, by rotating ring and stationary ring are set, form oil pocket, the first labyrinth structure, oil back chamber and the second labyrinth structure, makes gear-box both have good sealing effect, is also convenient to dismounting and maintenance.
Accompanying drawing explanation
The gear-box that Fig. 1 provides for the utility model embodiment structural representation of non-contact seal structure;
Fig. 2 is the enlarged view at A place in Fig. 1;
The schematic diagram that Fig. 3 seals with non-contact seal structure for the gear-box with the utility model embodiment provides;
Fig. 4 is the enlarged view at B place in Fig. 3.
Embodiment
The utility model embodiment provides a kind of gear-box non-contact seal structure, as shown in Figures 1 and 2, this gear-box comprises and is set in gear-box on rotatingshaft 3 and the rotating ring 1 and the fixed stationary ring 2 of relatively described gear case body (not shown) that with described rotatingshaft 3, rotate with non-contact seal structure; Stationary ring 2 is set in the outer rim of rotating ring 1 so that between rotating ring 1 and stationary ring 2 by fluid leak the direction of (leaking to gear-box outside) form successively to hold the oil pocket 10 of lubricant oil, the first labyrinth structure 20 leaking in order to the fluid stoping in described oil pocket 10, with so that the second labyrinth structure 40 that the fluid leaking from the first labyrinth structure 20 flows back to the oil back chamber 30 in gear-box and stops the fluid oil back chamber 30 to leak.
In the present embodiment, be communicated with and be provided with oil inlet hole 11 with oil pocket 10, for making lubricant oil enter into oil pocket 10 by oil inlet hole 11; Be communicated with and be provided with drainback passage 33 with oil back chamber 30, use so that the fluid in oil back chamber 30 is back in the fuel tank of gear-box by drainback passage 33.
In the present embodiment, on gear case body, for wearing in the axis hole of described rotatingshaft 3, be provided with bearing housing 4, for the outer shroud of described rotatingshaft 3 upper bearing (metal)s 7 is installed, oil inlet hole 11 is arranged on the upper position of bearing housing 4, and drainback passage 33 is arranged on the lower position of bearing housing 4.
In the present embodiment, in order to wear the axis hole arranged outside of the gear case body of rotatingshaft 3, have end cap 5, end cap 5 is fixedly connected with bearing housing 4, and bearing housing 4 and end cap 5 are bolted on the casing of gear-box.
In the present embodiment, stationary ring 2 comprises retaining ring 6 set on end cap 5 and end cap 5, concrete, retaining ring 6 is fixed on the inner side of end cap 5, end cap 5 makes default shape with the inner margin portion of the structure that retaining ring 6 forms, and be arranged on the outer rim of rotating ring 1, between retaining ring 6 and rotating ring 1, in the position near bearing 7, form the oil pocket 10 in order to lubricating bearings 7, next-door neighbour's oil pocket 10 is first labyrinth structures 20 that the fluid in order to prevent in oil pocket 10 of formation between rotating ring 1 and retaining ring 6 leaks, between the opposite side of retaining ring 6 and end cap 5 and rotating ring 1, form oil back chamber 30, next-door neighbour's oil back chamber 30, between end cap 5 and the first rotating ring 1, form the second labyrinth structure 40 leaking in order to the fluid preventing in oil back chamber 30.The present embodiment, by be fixedly installed retaining ring 6 on end cap 5, can be convenient to obtain larger oil back chamber space.
In the present embodiment, as shown in Figure 2, between bearing housing 4 and described end cap 5, be provided with O V-shaped ring 8, to prevent that fluid is from the clearance leakage between bearing housing 4 and end cap 5, in addition, between bearing 4 and end cap 5, be also provided with gap spacer 9, in order to adjust the axial clearance of bearing 7.
In the present embodiment, as shown in Figure 2, in oil pocket 10, on rotating ring 1, be provided with first conical surface 101, in order to the rotation by first conical surface 101, make fluid in described oil pocket 10 get rid of to splash and treat on lubricating structure (being bearing 7).During gear-box work, the gear tooth that lubricant oil in oil sump is immersed in oil sump takes up, be splashed to after the oil groove on casing, from oil inlet hole 11, enter into oil pocket 10, part fluid accumulates to roller and the raceway of lubricating bearings 7 at the bottom of oil pocket 10 chambeies, part fluid is got rid of and is splashed on bearing 7 by the rotation of first conical surface 101, and bearing 7 is lubricated.First conical surface 101 is that (cone of rotation is always pointed to large end by small end at the component of the centrifugal force perpendicular to rotating shaft for centrifugal guiding effect according to the conical surface, fluid is moved to large end by small end), fluid is moved and being tangentially thrown on bearing 7 along large end to large end along the small end of first conical surface 101.
In the present embodiment, the first labyrinth structure 20 comprises the first gap 21 and the dilatation chamber 22 forming between rotating ring 1 and stationary ring 2; In dilatation chamber 22, position near the first gap 21 on rotating ring 1 is provided with second conical surface 102, the first gap 21 described in the back draught forming in order to the centrifugal guiding effect producing by the second conical surface 102 rotations and (mist of oil wall) shutoff of liquid stream, few fluid that makes to try one's best leaks from the first gap 21; In dilatation chamber 22, on rotating ring 1, be provided with the having three pyramidal faces 103 relative with second conical surface 102, with so that the fluid in dilatation chamber 22 arrives the predeterminated position of oil back chamber 30 by the rotation impelling of having three pyramidal faces 103, fluid can be refluxed fast at the predeterminated position of oil back chamber 30.Wherein, second conical surface 102 and having three pyramidal faces 103 are the centrifugal guiding effect of utilizing the conical surface equally, and air-flow and liquid stream are moved to large end from small end in the rotary course of the conical surface.
In the present embodiment, in oil back chamber 30, be provided with and make fluid be back to smoothly the first oil groove 31 second oil grooves 32 in gear-box by drainback passage 33, fluid in dilatation chamber 22 passes through the rotation impelling of having three pyramidal faces 103 in the first oil groove 31 and the second oil groove 32, and fluid can enter into smoothly drainback passage 33 from the first oil groove 31 and the second oil groove 32.
In the present embodiment, in oil back chamber 30, position near dilatation chamber 22 on rotating ring 1 is provided with the 4th conical surface 104, the mist of oil wall forming in order to the centrifugal guiding effect producing by the 4th conical surface 104 rotations, make the air-flow that produces and liquid flow resistance only the fluid of the first labyrinth structure 20 to oil back chamber 30 internal leakages.
In the present embodiment, the second labyrinth structure 40 comprises the second gap and the 41 roundabout gaps 42 that form between rotating ring 1 and stationary ring 2, so that the fluid leaking by the second gap 41 in oil back chamber 30 enters into roundabout gap 42, fluid in roundabout gap 42 can flow back into oil back chamber 30, and does not make fluid leak;
Wherein, in the second gap 41, on rotating ring 1, be provided with the 5th conical surface 105, the mist of oil wall forming in order to the centrifugal guiding effect producing by the 5th conical surface 105 rotations, make the air-flow and liquid stream shutoff the second gap 41 that produce, few fluid that makes to try one's best enters into the second gap 41.
In the present embodiment, as shown in Figures 1 and 2, between rotating ring 1 and stationary ring 2, be also formed with to stop the impurity in gear-box outside to enter into the 3rd labyrinth structure 50 in gear-box, the 3rd labyrinth structure 50 comprises the 3rd gap 51 and the separate cavities 52 forming between rotating ring 1 and stationary ring 2, for shutoff the 3rd gap 51, position near the 3rd gap 51 on rotating ring 1 is provided with the 6th conical surface 106, water in separate cavities 52, the aerosol wall that the centrifugal guiding effect that ash and gas etc. produce by the 6th conical surface 106 rotation forms can shutoff the 3rd gap 51, make few water of trying one's best, ash etc. enters into separate cavities 52, and by the 3rd gap 51, enter into the impurity such as water, ash of separate cavities 52, because the increase of volume is slowed down, fall in the groove on separate cavities 52 tops and the groove of bottom, then move to the bottom of separate cavities 52, the water ash passage 53(Fig. 1 arranging from separate cavities 52 bottoms) discharge gear case body.
The detailed process gear-box providing with the present embodiment being sealed with non-contact seal structure below by Fig. 3 and Fig. 4 (simultaneously in conjunction with Fig. 2) is described.(the centrifugal guiding effect that the conical surface of mentioning in following description has all utilized rotation to produce, repeats no more).
Lubricant oil fluid enters into oil pocket 10 by oil inlet hole 11, a fluid part in oil pocket 10 accumulates to lubricating bearings 7 at the bottom of chamber, part fluid is got rid of this part fluid to splash on bearing 7 by the rotation of first conical surface 101 on rotating ring 1, make bearing 7 carry out sufficient lubrication, therefore, a fluid part in this oil pocket 10 is for lubricated, after lubricated, by bearing 7, flow back to fuel tank, a part is stayed in oil pocket 10, and the fluid of staying in oil pocket 10 has sub-fraction to enter into dilatation chamber 22 by the first gap 21 in the first labyrinth structure 20, and gas in dilatation chamber 22 and fluid are by the rotation of second conical surface 102 on the first rotating ring 1, the air-flow that the opposite direction that generation is leaked direction to the first gap 21 moves and liquid stream, form sealing mist of oil wall, shutoff is carried out in the first gap 21, and fraction enters into the fluid in dilatation chamber 22 by the rotation of having three pyramidal faces 103, impelling is in the first oil groove 31 and the second oil groove 32 in oil back chamber 30, from the first oil groove 31 and the second oil groove 32, flow into smoothly the drainback passage 33 of oil back chamber 30 bottoms settings again.Meanwhile, the gas in oil back chamber 30 and fluid produce sealing mist of oil wall by the rotation of the 4th conical surface 104, prevent that the oil liquid leakage in the first labyrinth structure 20 from entering into oil back chamber 30.
In oil back chamber 30, part fluid further leaks and enters into the second labyrinth structure 40, first enter into the second gap 41 of the second labyrinth structure 40, and fluid in the second gap 41 and gas can be by the rotations of the 5th conical surface 105 on rotating ring 1, shutoff the second gap 41, and still by the second gap 41, enter into the fluid in roundabout gap 42, can flow back in oil back chamber 30 by roundabout gap 42, thereby prevent leaking of fluid.
When the 3rd gap 51 at the water in gear case body outside, ash etc. by the 3rd labyrinth structure 50 enters into separate cavities 52, air-flow in separate cavities 52, water ash etc. can come by the rotation of the 6th conical surface 106 on rotating ring 1 shutoff the 3rd gap 51, make to try one's best few water, ashes etc. enter into separate cavities 52, and enter into the water ash passage 53 that the impurity such as water, ash of separate cavities 52 can arrange by separate cavities 52 bottoms, discharge outside gear-boxes.
Gear-box the present embodiment being provided below in conjunction with Fig. 1 is described by the disassembly process of non-contact seal structure.
During assembling, respectively the interior ring of bearing 7 and rotating ring 1 are assembled on rotatingshaft 3(rotatingshaft 3 component such as gear are also housed) on, become rotatingshaft assembly, between the interior ring of bearing 7 and rotating ring 1 and rotatingshaft 5, it is interference fit, the outer shroud of bearing 7 is assembled in bearing housing 4, become bearing housing assembly, on the end cap 5 of retaining ring 6, pack O-ring seals 8 and gap spacer 9 into being fixed with, become end-cap assembly, together with bearing housing assembly is installed to rotatingshaft assembly, be put in the set axis hole of the casing of gear-box, by locating stud, located, again end-cap assembly is assembled to bearing housing assembly, also with locating stud, locate, finally with bolt, bearing housing and end cap are fixed on casing.When dismounting, knockout screw, takes out end-cap assembly, bearing housing assembly successively, then takes out rotatingshaft assembly, as dismantled, can use frock that the interior ring of rotating ring 1 and bearing 7 is pulled down from rotatingshaft 3 again.
The gear-box that the present embodiment provides by rotating ring and stationary ring are set, forms oil pocket, the first labyrinth structure, oil back chamber and the second labyrinth structure with non-contact seal structure, makes gear-box both have good sealing effect, is also convenient to dismounting and maintenance.
The utility model is another embodiment also provide a kind of gear-box, includes the gear-box non-contact seal structure that the utility model any embodiment provides.
Finally it should be noted that: each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit above; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technological scheme that still can record aforementioned each embodiment is modified, or some or all of technical characteristics is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of each embodiment's technological scheme of the utility model.

Claims (13)

1. a gear-box non-contact seal structure, is characterized in that, comprises and is set in gear-box on rotatingshaft and the rotating ring and the fixed stationary ring of relatively described gear case body that with described rotatingshaft, rotate;
Described stationary ring is set in the outer rim of described rotating ring, so that the direction leaking by fluid between described rotating ring and described stationary ring forms to hold the oil pocket of lubricant oil, the first labyrinth structure leaking in order to the fluid stoping in described oil pocket, use successively so that the second labyrinth structure that the fluid that described the first labyrinth structure leaks flows back to the oil back chamber in described gear-box and stops the fluid in described oil back chamber to leak.
2. gear-box non-contact seal structure according to claim 1, is characterized in that, is communicated with and is provided with oil inlet hole, for making lubricant oil enter described oil pocket by described oil inlet hole with described oil pocket;
Be communicated with and be provided with drainback passage with described oil back chamber, use so that the fluid in described oil back chamber is back in the fuel tank of described gear-box by described drainback passage.
3. gear-box non-contact seal structure according to claim 2, is characterized in that, is provided with bearing housing, for the outer shroud of described rotatingshaft upper bearing (metal) is installed on described gear case body for wearing in the axis hole of described rotatingshaft;
Described oil inlet hole is arranged on the upper position of described bearing housing, and described drainback passage is arranged on the lower position of described bearing housing.
4. gear-box non-contact seal structure according to claim 3, is characterized in that, described axis hole arranged outside has end cap, and described end cap is fixedly connected with described bearing housing;
Described stationary ring comprises set retaining ring on described end cap and described end cap.
5. gear-box non-contact seal structure according to claim 4, is characterized in that, between described bearing housing and described end cap, is provided with seal ring, to prevent that fluid is from the clearance leakage between described bearing housing and described end cap;
Between described bearing housing and described end cap, be also provided with gap spacer, for adjusting the axial clearance of described bearing.
6. gear-box non-contact seal structure according to claim 2, it is characterized in that, in described oil pocket, on described rotating ring, be provided with first conical surface, in order to the centrifugal guiding effect producing by described the first conical surface rotation, make fluid in described oil pocket get rid of to splash and treat on lubricating structure.
7. gear-box non-contact seal structure according to claim 2, is characterized in that, described the first labyrinth structure comprises the first gap and the dilatation chamber forming between described rotating ring and described stationary ring;
In described dilatation chamber, on described rotating ring, near the position in described the first gap, be provided with second conical surface, the first gap described in the mist of oil wall shutoff forming in order to the centrifugal guiding effect producing by described the second conical surface rotation;
In described dilatation chamber, on described rotating ring, be provided with the having three pyramidal faces relative with described second conical surface, use so that the predeterminated position of described oil back chamber is arrived in the centrifugal guiding effect impelling that the fluid in described dilatation chamber produces by described having three pyramidal faces rotation.
8. gear-box non-contact seal structure according to claim 7, it is characterized in that, in described oil back chamber, be provided with and make fluid flow back into smoothly the first oil groove and the second oil groove in described gear-box by described drainback passage, the centrifugal guiding effect impelling that fluid in described dilatation chamber produces by described having three pyramidal faces rotation is in described the first oil groove and described the second oil groove
In described oil back chamber, position near described dilatation chamber on described rotating ring is provided with the 4th conical surface, and the mist of oil wall forming in order to the centrifugal guiding effect producing by described the 4th conical surface rotation stops the fluid of described the first labyrinth structure to described oil back chamber internal leakage.
9. gear-box non-contact seal structure according to claim 2, it is characterized in that, described the second labyrinth structure comprises the second gap and the roundabout gap forming between described rotating ring and described stationary ring, so that the fluid by described the second slot leakage in described oil back chamber enters into described roundabout gap, the fluid in described roundabout gap can flow back into described oil back chamber;
In described the second gap, on described rotating ring, be provided with the 5th conical surface, the second gap described in the mist of oil wall shutoff forming in order to the centrifugal guiding effect producing by described the 5th conical surface rotation.
10. according to the arbitrary described gear-box non-contact seal structure of claim 1-9, it is characterized in that, between described stationary ring and described rotating ring, be also formed with to stop the impurity in described gear-box outside to enter into the 3rd labyrinth structure in described gear-box.
11. gear-box non-contact seal structures according to claim 10, it is characterized in that, described the 3rd labyrinth structure comprises the 3rd gap and the separate cavities forming between described stationary ring and described rotating ring, the impurity in described gear-box outside enters into described separate cavities by described the 3rd gap, and the water ash passage arranging from the bottom of described separate cavities is discharged.
12. gear-box non-contact seal structures according to claim 11, it is characterized in that, on described rotating ring, near the position in described the 3rd gap, be provided with the 6th conical surface, the 3rd gap described in the aerosol wall shutoff forming in order to the centrifugal guide function producing by described the 6th conical surface rotation.
13. 1 kinds of gear-boxes, is characterized in that, comprise the arbitrary described gear-box non-contact seal structure of claim 1-12.
CN201320739203.3U 2013-11-20 2013-11-20 Non-contact sealing structure for gearbox and gearbox Expired - Fee Related CN203560407U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320739203.3U CN203560407U (en) 2013-11-20 2013-11-20 Non-contact sealing structure for gearbox and gearbox

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320739203.3U CN203560407U (en) 2013-11-20 2013-11-20 Non-contact sealing structure for gearbox and gearbox

Publications (1)

Publication Number Publication Date
CN203560407U true CN203560407U (en) 2014-04-23

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Application Number Title Priority Date Filing Date
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061317A (en) * 2014-07-14 2014-09-24 江苏金沃机械有限公司 Non-contact seal device for high-speed shaft of gear speed reducer
CN112696485A (en) * 2020-12-25 2021-04-23 中国船舶重工集团公司第七0三研究所 Non-contact combined seal for gearbox

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104061317A (en) * 2014-07-14 2014-09-24 江苏金沃机械有限公司 Non-contact seal device for high-speed shaft of gear speed reducer
CN112696485A (en) * 2020-12-25 2021-04-23 中国船舶重工集团公司第七0三研究所 Non-contact combined seal for gearbox

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C56 Change in the name or address of the patentee
CP03 Change of name, title or address

Address after: 102202 Beijing city Changping District South Town Road North South Town West No. 584 No. 585

Patentee after: Beijing Zhongche Nankow Machinery Co. Ltd.

Address before: 102202 Beijing city Changping District town of South Road North

Patentee before: Beijing NanKou Railway Transit Machinery Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140423

Termination date: 20191120