CN203560447U - 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
CN203560447U
CN203560447U CN201320739193.3U CN201320739193U CN203560447U CN 203560447 U CN203560447 U CN 203560447U CN 201320739193 U CN201320739193 U CN 201320739193U CN 203560447 U CN203560447 U CN 203560447U
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CN
China
Prior art keywords
gear
oil
rotating ring
gap
box
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Expired - Fee Related
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CN201320739193.3U
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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 CN201320739193.3U priority Critical patent/CN203560447U/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 first movable ring and a second movable ring and further comprises a first fixed ring and a second fixed ring, wherein the first movable ring and the second movable ring are sequentially arranged on a rotating shaft in a sleeved mode in the oil leaking direction and rotate along with the rotating shaft, the first fixed ring and the second fixed ring are fixed relative to a box body of the gearbox. The periphery of the first movable ring is sleeved with the first fixed ring so that an oil cavity for lubrication and a first labyrinth structure for preventing oil in the oil cavity from leakage can be formed between the first fixed ring and the second fixed ring. The periphery of the second movable ring is sleeved with the second fixed ring so that a second labyrinth structure can be formed between the second fixed ring and the second movable ring. An oil return cavity is formed between the first labyrinth structure and the second labyrinth structure so that oil leaking out of the first labyrinth structure can enter the oil return cavity. The second labyrinth structure is used for preventing oil in the oil return cavity from leakage. The non-contact sealing structure for the gearbox and the gearbox have a good sealing effect and are 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 a kind of gear-box non-contact seal structure and 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 a kind of gear-box non-contact seal structure and gear-box, makes gear-box both 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 the first rotating ring and the second rotating ring, and the direction that described the first rotating ring and the second rotating ring leak by fluid is set in successively on the rotatingshaft in gear-box and with described rotatingshaft and rotates;
Also comprise fixed the first stationary ring of relatively described gear case body and the second stationary ring, described the first stationary ring is set in the outer rim of described the first rotating ring, so that form the first labyrinth structure in order to hold the oil pocket of lubricant oil and to leak in order to the fluid stoping in described oil pocket between described the first stationary ring and described the first rotating ring;
Described the second stationary ring is set in the outer rim of described the second rotating ring, so that form the second labyrinth structure between described the second stationary ring and described the second rotating ring;
Between described the first labyrinth structure and described the second labyrinth structure, be formed with oil back chamber, so that the fluid leaking from described the first labyrinth structure enters into described oil back chamber, described the second labyrinth structure is in order to stop 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, in order to wear in the axis hole of gear case body of described rotatingshaft, is provided with bearing housing, and the end cap of described axis hole arranged outside is fixedly connected with described bearing housing;
Described the first stationary ring is installed on described bearing housing, and described the second stationary ring is installed on 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.
Gear-box as above is with in non-contact seal structure, and 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, with in non-contact seal structure, in described oil pocket, is provided with first conical surface on described the first rotating ring, in order to rotate the centrifugal guiding effect producing by described first conical surface, makes fluid in described oil pocket get rid of to splash to treat on lubricating structure.
Gear-box as above is with in non-contact seal structure, and described the first labyrinth structure comprises the first gap, cavity volume and the second gap that between described the first rotating ring and described the first stationary ring, form successively;
In described cavity volume, on described the first 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 cavity volume, by the fluid of described the second slot leakage, enter into described oil back chamber.
Gear-box as above is with in non-contact seal structure, described oil back chamber comprises the first oil groove and the second oil groove, on described the first rotating ring, in the position that described the first oil groove is set, be provided with having three pyramidal faces, in order to the fluid leaking at described the first labyrinth structure, enter into after described the first oil groove, by described having three pyramidal faces, rotate the centrifugal guiding effect producing the fluid in described the first oil groove is got rid of and splashed in described the second oil groove, to flow back to smoothly in gear-box by described drainback passage from described the second oil groove.
Gear-box as above is with in non-contact seal structure, and described the second labyrinth structure comprises the 3rd gap and the roundabout gap that between described the second rotating ring and described the second stationary ring, form;
In described the 3rd gap, on described the second rotating ring, be provided with the 4th conical surface, the 3rd gap described in the mist of oil wall shutoff forming in order to the centrifugal guiding effect producing by described the 4th conical surface rotation;
On described the second stationary ring, corresponding described the 4th conical surface is provided with the 5th conical surface, and the fluid that enters into described roundabout gap from described the 3rd gap flows back to described oil back chamber along described the 5th conical surface.
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 the second stationary ring and described the second rotating ring.
Gear-box as above is with in non-contact seal structure, described the 3rd labyrinth structure comprises the Fpir Crevices gap and the separate cavities that between described the second stationary ring and described the second rotating ring, form, the impurity in described gear-box outside enters into described separate cavities by described Fpir Crevices gap, and the water ash passage arranging from the bottom of described separate cavities is discharged.
Gear-box as above is with in non-contact seal structure, on described the second rotating ring, near the position of described Fpir Crevices gap, be provided with the 6th conical surface, Fpir Crevices 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, includes gear-box non-contact seal structure described above.
Non-contact seal structure and gear-box for the gear-box that the utility model provides, by the first rotating ring, the second rotating ring, the first stationary ring and the second stationary ring are set, form oil pocket, the first labyrinth structure, oil back chamber and the second labyrinth structure, make gear-box both there is good sealing effect, be 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;
Fig. 3 is the enlarged view at B place in Fig. 1;
The schematic diagram of Fig. 4 for sealing with non-contact seal structure with the gear-box that the utility model embodiment provides;
Fig. 5 is the enlarged view at C place in Fig. 4.
Embodiment
The utility model embodiment provides a kind of gear-box non-contact seal structure, as shown in Figure 1, this gear-box comprises the first rotating ring 1 and the second rotating ring 2 with non-contact seal structure, and described the first rotating ring 1 and the second rotating ring 2 are set in successively on rotatingshaft 5 and with described rotatingshaft 5 and rotate by the leak direction of (leaking to gear case body outside) of fluid; Sealing structure also comprises fixed the first stationary ring 3 of relative gear case body (not shown) and the second stationary ring 4, the first stationary ring 3 is set in the outer rim of the first rotating ring 1, so that form oil pocket 10 and first labyrinth structure 20 in order to stop fluid to leak of lubricated use between the first stationary ring 3 and the first rotating ring 1; The second stationary ring 4 is set in the outer rim of the second rotating ring 2, so that form the second labyrinth structure 40 between the second stationary ring 4 and the second rotating ring 2; Between the first labyrinth structure 20 and the second labyrinth structure 40, be formed with oil back chamber 30, so that the fluid leaking from the first labyrinth structure 20 enters into oil back chamber 30, from oil back chamber 30, flow back in the fuel tank of gear-box, the second labyrinth structure 40 is in order to stop the fluid in oil back chamber 30 to leak again.
In the present embodiment, be communicated with and be provided with oil inlet hole 11 with oil pocket 10, for making lubricant oil enter 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, as shown in Figure 1, in order to wear in the axis hole (not shown) of gear case body of rotatingshaft 5, be provided with bearing housing 7, in order to install the bearing 8 on rotatingshaft 5, at the end cap 6 of described axis hole arranged outside, be fixedly connected with bearing housing 7;
In the present embodiment, oil inlet hole 11 is arranged on the upper position of bearing housing 7, and drainback passage 33 is arranged on the lower position of bearing housing 7.
In the present embodiment, the first stationary ring 3 is installed on bearing housing 7, and the second stationary ring 4 is installed on end cap 6.Concrete, the first stationary ring 3 can be one-body molded with bearing housing 7, and the first stationary ring 3 can be a part for bearing housing 7, also can be the structure being fixedly connected with on bearing housing 7; Same, the second stationary ring 4 also can with the integrally manufactured moulding of end cap 6, also can be the structure being fixedly connected with on end cap 6.
In the present embodiment, as shown in Figure 1, for preventing that lubricating oil, from the clearance leakage between end cap 6 and bearing housing 7, is provided with seal ring 9 between end cap 6 and bearing housing 7, seal ring 9 specifically can adopt O RunddichtringO.
In the present embodiment, as shown in Figure 2, in oil pocket 10, first conical surface 101 is set on the first rotating ring 1, in order to make fluid in oil pocket 10 get rid of to splash by the rotation of the first inner conical surface 101, treats on lubricating structure (being bearing 8).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 8 at the bottom of oil pocket 10 chambeies, part fluid is got rid of and is splashed on bearing 8 by the rotation of first conical surface 101, and bearing 8 is lubricated.Specifically according to the centrifugal guiding effect of the conical surface, (centrum of rotation is always pointed to large end by small end at the component of the centrifugal force perpendicular to rotating shaft to first conical surface 101, make fluid have small end to move to large end), fluid is moved and being tangentially thrown on bearing 8 along large end to large end along the small end of first conical surface 101.
In the present embodiment, as shown in Figures 1 and 2, the first labyrinth structure 20 comprises the first gap 21 forming successively between the first rotating ring 1 and the first stationary ring 3, cavity volume 22 and the second gap 23, fluid in oil pocket 10 can leak and enter into cavity volume 22 from the first gap 21, for shutoff the first gap 21, in cavity volume 22, position near the first gap 21 on the first rotating ring 1 is provided with second conical surface 102, in oil pocket 10, by the first gap 21, enter into the fluid of cavity volume 22 and the gas of cavity volume 22 by the rotation of second conical surface 102, air-flow and the liquid stream that the opposite direction of direction moves is leaked in generation along the first gap 21, the first gap 21 described in the shutoff of formation sealing mist of oil wall, few fluid that makes to try one's best leaks from the first gap 21, second conical surface 102 is to utilize the guiding effect of the conical surface by rotation shutoff the first gap 21 equally, and the fluid that still enters into cavity volume 22 from the first gap 21 can leak and enter into oil back chamber 30 from the second gap 23.
In the present embodiment, as shown in Figure 5, oil back chamber 30 comprises and is arranged on the first oil groove 31 on the first rotating ring 1 and is arranged on the second oil groove 32 on the second stationary ring 4, and in the position that the first oil groove 31 is set, be provided with having three pyramidal faces 103 on the first rotating ring 1, in order to the fluid leaking at the first labyrinth structure 20, enter into after the first oil groove 31, by having three pyramidal faces 103, rotating produced centrifugal guiding effect gets rid of the fluid in the first oil groove 31 to splash in the second oil groove 32, from the second oil groove 32, enter into the drainback passage 33 (as Fig. 4) that oil back chamber 30 bottoms arrange again, and then flow back in gear-box.
In the present embodiment, as shown in Figures 1 and 3, the second labyrinth structure 40 comprises the 3rd gap 41 and the roundabout gap 42 that between the second rotating ring 2 and the second stationary ring 4, form, and the fluid in oil back chamber 30 can be leaked and be entered into roundabout gap 42 by the 3rd gap 41;
In the present embodiment, in the 3rd gap 41, on the second rotating ring 2, be provided with the 4th conical surface 104, in order to rotate the 3rd gap 41 described in the mist of oil wall shutoff that produced centrifugal guiding effect forms by the 4th conical surface 104; On the second stationary ring 4, corresponding the 4th conical surface 104 is provided with the 5th conical surface 105, and the fluid that enters into roundabout gap 42 from the 3rd gap 41 can flow back in oil back chamber 30 along the 5th conical surface 105.
In the present embodiment, as shown in Figures 1 and 3, for the impurity such as water, ash that prevents gear case body outside enters in gear-box, between the second stationary ring 4 and the second rotating ring 2, be also formed with the 3rd labyrinth structure 50.
In the present embodiment, the 3rd labyrinth structure 50 comprises the Fpir Crevices gap 51 and the separate cavities 52 that between the second rotating ring 2 and the second stationary ring 4, form, the water in gear-box outside, the impurity such as ash can enter into separate cavities 52 by Fpir Crevices gap 51, for shutoff Fpir Crevices gap 51, position near Fpir Crevices gap 51 on the second rotating ring 2 is provided with the 6th conical surface 106, air-flow in separate cavities 52, water, ashes etc. can rotate the aerosol wall shutoff Fpir Crevices gap 51 that produced centrifugal guiding effect forms by the 6th conical surface 106, and enter into the water of separate cavities 52, ashes etc. are because the increase of volume is slowed down, fall to 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 arranging from separate cavities 52 bottoms is discharged gear case body.
The detailed process gear-box providing with the present embodiment being sealed with non-contact seal structure below by Fig. 4 and Fig. 5 is described.(the centrifugal guiding effect that the conical surface of mentioning in following description has all utilized rotation to produce, repeats no more).
As shown in Figures 4 and 5, lubricant oil fluid enters into oil pocket 10 by oil inlet hole 11, a fluid part in oil pocket 10 accumulates to lubricating bearings 8 at the bottom of chamber, part fluid is got rid of this part fluid to splash on bearing 8 by the rotation of first conical surface 101 on the first rotating ring 1, make bearing 8 carry out sufficient lubrication, therefore, a fluid part in this oil pocket 10 is for lubricated, after lubricated, by bearing 8, 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 pass through the first labyrinth structure 20(in conjunction with Fig. 2) in the first gap 21 enter into cavity volume 22, and fluid in cavity volume 22 part is by rotation shutoff first gap 21 of second conical surface 102 on the first rotating ring 1, there is fraction fluid to leak and flow in the first oil groove 31 of oil back chamber 30 by the second gap 23, fluid in the first oil groove 31 is by the rotation of having three pyramidal faces 103, impelling is in the second oil groove 32, from the second oil groove 32, flow into smoothly the drainback passage 33 of oil back chamber 30 bottoms settings again.
Fluid in oil back chamber 30 still has part fluid to leak and enters into the second labyrinth structure 40(in conjunction with Fig. 3), first enter into the 3rd gap 41 of the second labyrinth structure 40, and fluid and gas in the 3rd gap 41 can pass through rotation shutoff the 3rd gap 41 of the second rotating ring 2 the 4th conical surface 104, and the fluid that still enters into roundabout gap 42 by the 3rd gap 41 can flow back into oil back chamber 30 along the 5th conical surface 105, thereby prevented leaking of fluid.
The impurity such as the water in gear case body outside, ash from the 3rd labyrinth structure 50(in conjunction with Fig. 3) Fpir Crevices gap 51 while entering into separate cavities 52, air-flow in separate cavities 52, water ash etc. can carry out shutoff Fpir Crevices gap 52 by the rotation of the 6th conical surface 106 on the second rotating ring 2, make to try one's best few water, ash enters into separate cavities 52, and enter into the water ash passage 53 that the water, ash etc. of separate cavities 52 can arrange by separate cavities 52 bottoms, discharge.
Gear-box the present embodiment being provided below in conjunction with Fig. 1 is described in detail by the disassembly process of non-contact seal structure.
During assembling, respectively interior bearing 8 ring, the first rotating ring 1 and the second rotating ring 2 are assembled on rotatingshaft 5, become rotatingshaft assembly, between interior ring, the first rotating ring 1 and the second rotating ring 2 and the rotatingshaft 5 of bearing 8, it is interference fit, again this rotatingshaft assembly is encased in the bearing hole of gear case body (not shown), the outer shroud of bearing 8 is assembled in bearing housing 7, bearing housing 7 is encased in the bearing hole of casing, by locating stud, is located; Again O RunddichtringO 9 is encased in the corresponding groove of end cap 6, then end cap 6 and bearing housing 7 are fixed, can first by locating stud, locate equally, finally by screw, bearing housing 7 and end cap 6 are fixed on gear case body.
When dismounting, knockout screw, takes out end cap 6, bearing housing 7 successively, then takes out rotatingshaft assembly, as dismantled, can use frock that the interior ring of the first rotating ring 1, the second rotating ring 2 and bearing 8 is pulled down from rotatingshaft 5 again.
The gear-box that the present embodiment provides with non-contact seal structure by the first rotating ring, the second rotating ring, the first stationary ring and the second stationary ring are set, form oil pocket, the first labyrinth structure, oil back chamber and the second labyrinth structure, make gear-box both there is good sealing effect, be also convenient to dismounting and maintenance.
The utility model is another embodiment also provide a kind of gear-box, and this gear-box includes the gear-box non-contact seal structure that the utility model any embodiment provides.
Finally it should be noted that: above each embodiment, only in order to the technical solution of the utility model to be described, is not intended to limit; 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 the each embodiment's technological scheme of the utility model.

Claims (13)

1. a gear-box non-contact seal structure, is characterized in that, comprises the first rotating ring and the second rotating ring, and the direction that described the first rotating ring and the second rotating ring leak by fluid is set in successively on the rotatingshaft in gear-box and with described rotatingshaft and rotates;
Also comprise fixed the first stationary ring of relatively described gear case body and the second stationary ring, described the first stationary ring is set in the outer rim of described the first rotating ring, so that form the first labyrinth structure in order to hold the oil pocket of lubricant oil and to leak in order to the fluid stoping in described oil pocket between described the first stationary ring and described the first rotating ring;
Described the second stationary ring is set in the outer rim of described the second rotating ring, so that form the second labyrinth structure between described the second stationary ring and described the second rotating ring;
Between described the first labyrinth structure and described the second labyrinth structure, be formed with oil back chamber, so that the fluid leaking from described the first labyrinth structure enters into described oil back chamber, described the second labyrinth structure is in order to stop 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, in order to wear in the axis hole of gear case body of described rotatingshaft, is provided with bearing housing, and the end cap of described axis hole arranged outside is fixedly connected with described bearing housing;
Described the first stationary ring is installed on described bearing housing, and described the second stationary ring is installed on described end cap.
4. gear-box non-contact seal structure according to claim 3, 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.
5. gear-box non-contact seal structure according to claim 3, is characterized in that, 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.
6. gear-box non-contact seal structure according to claim 2, it is characterized in that, in described oil pocket, on described the first rotating ring, be provided with first conical surface, in order to rotate the centrifugal guiding effect producing by described first conical surface, make fluid in described oil pocket get rid of to splash to 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, cavity volume and the second gap that between described the first rotating ring and described the first stationary ring, form successively;
In described cavity volume, on described the first 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 cavity volume, by the fluid of described the second slot leakage, enter into described oil back chamber.
8. gear-box non-contact seal structure according to claim 2, it is characterized in that, described oil back chamber comprises the first oil groove and the second oil groove, on described the first rotating ring, in the position that described the first oil groove is set, be provided with having three pyramidal faces, in order to the fluid leaking at described the first labyrinth structure, enter into after described the first oil groove, by described having three pyramidal faces, rotate the centrifugal guiding effect producing the fluid in described the first oil groove is got rid of and splashed in described the second oil groove, to flow back to smoothly in gear-box by described drainback passage from described the second oil groove.
9. gear-box non-contact seal structure according to claim 2, is characterized in that, described the second labyrinth structure comprises the 3rd gap and the roundabout gap that between described the second rotating ring and described the second stationary ring, form;
In described the 3rd gap, on described the second rotating ring, be provided with the 4th conical surface, the 3rd gap described in the mist of oil wall shutoff forming in order to the centrifugal guiding effect producing by described the 4th conical surface rotation;
On described the second stationary ring, corresponding described the 4th conical surface is provided with the 5th conical surface, and the fluid that enters into described roundabout gap from described the 3rd gap flows back to described oil back chamber along described the 5th conical surface.
10. according to the arbitrary described gear-box non-contact seal structure of claim 1-9, it is characterized in that, between described the second stationary ring and described the second 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 Fpir Crevices gap and the separate cavities that between described the second stationary ring and described the second rotating ring, form, the impurity in described gear-box outside enters into described separate cavities by described Fpir Crevices 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 the second rotating ring, near the position of described Fpir Crevices gap, be provided with the 6th conical surface, Fpir Crevices gap described in the aerosol wall shutoff forming in order to the centrifugal guiding effect 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.
CN201320739193.3U 2013-11-20 2013-11-20 Non-contact sealing structure for gearbox and gearbox Expired - Fee Related CN203560447U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201320739193.3U CN203560447U (en) 2013-11-20 2013-11-20 Non-contact sealing structure for gearbox and gearbox

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Cited By (3)

* 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
CN104329468A (en) * 2014-10-23 2015-02-04 武汉新置密封科技有限公司 Two-way floating seal device
CN112762098A (en) * 2021-01-21 2021-05-07 珞石(北京)科技有限公司 Non-contact sealing system for moving shaft and industrial robot

Cited By (4)

* 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
CN104329468A (en) * 2014-10-23 2015-02-04 武汉新置密封科技有限公司 Two-way floating seal device
CN104329468B (en) * 2014-10-23 2016-08-24 武汉新置密封科技有限公司 A kind of two-way floating sealing device
CN112762098A (en) * 2021-01-21 2021-05-07 珞石(北京)科技有限公司 Non-contact sealing system for moving shaft and industrial robot

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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.

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Granted publication date: 20140423

Termination date: 20191120