CN207278846U - A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end - Google Patents
A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end Download PDFInfo
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- CN207278846U CN207278846U CN201721314051.7U CN201721314051U CN207278846U CN 207278846 U CN207278846 U CN 207278846U CN 201721314051 U CN201721314051 U CN 201721314051U CN 207278846 U CN207278846 U CN 207278846U
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Abstract
A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end, is related to shaft end sealing structure for speed reducer technical field, solves mining gear reducer shaft end sealing and dustproof and the undesirable technical problem of oil-leakage-prevention effect, solution are：The bearing includes inner bearing and outer bearing, inner bearing and between the outer spacer ring of bearing is set, distance collar is installed at the end face outside of outer bearing, distance collar is equipped with distance collar oil return opening, oil baffle is installed between distance collar and boss；The axle sleeve includes internal axle sleeve and outer shaft, the periphery of internal axle sleeve is equipped with Sealing shield ring one, the periphery of outer shaft is equipped with Sealing shield ring two, Sealing shield ring one and Sealing shield ring two form axial seal labyrinth between the opposing end surface of boss respectively, and at least one of radial direction oil groove is additionally provided with one end face outside of Sealing shield ring.Leakage of the utility model to lubricating oil and oil gas has good sealing effect, while can effectively avoid the dust in working environment from entering inside box body of speed reducer.
Description
Technical field
Shaft end sealing structure for speed reducer technical field is the utility model is related to, more particularly to a kind of mining gear reducer shaft end is more
Solid axle is to mechanical labyrinth formula sealing structure.
Background technology
The mining gear reducers such as development machine gear reducer, drag conveyor gear reducer, belt conveyer gear reducer are widely used in
In the coal mining of coal mine industry, transporting equipment.Since gear reducer working environment is severe, dust is big, difficult in maintenance, so to subtracting
Speed is confidential to seek good leakproofness, on the one hand to avoid lubricating oil from being leaked from reductor shaft end position, ensures that lubricating oil is not permeable
Leakage.On the other hand dust is also avoided to enter by gear reducer shaft end inside box body of speed reducer, once subtract because dust enters
Inside fast box body, dust is sufficiently mixed lubricant effect and the flowing for directly affecting lubricating oil with lubricating oil under gear stirring
Property, lubricating oil is polluted, and then cause gear and bearing excessive wear, while dust greasy dirt is in the aggregation of drainback passage
The reflux of lubricating oil can be blocked.It can be seen that the sealing of mining gear reducer is critically important.But in actual use, by
In structure design and the factor of manufacture etc., often produce due to seal failure, oil leak, is caused in gear reducer
The generation of the failures such as bearing, gear failure.
The current mining following two structures of gear reducer shaft end seal generally use：
Scheme one：Using skeleton oil seal structure, seal is single rubber framework grease seal or two rubber skeleton oil
Envelope, outside framework oil seal are contacted to produce certain pressure by lip with axis, rubber lip is produced elastic deformation, so that lip
It is in close contact with axis and achievees the purpose that sealing.Using this sealing structure, good dustproof effect, can effectively prevent dust from entering to subtract
It inside fast machine, but due to being also easy to produce frictional heating between axis and oil sealing, will be worn in the short time, cause lubricating oil from axis
Leakage at the oil sealing of end is, it is necessary to often replace oil sealing, therefore sealing effect is bad.
Scheme two：Using mechanical labyrinth radial seal structure, on transmission shaft circumference or at boss endoporus, it is machined with
Sealed groove, sealed groove keep less gap, using between this perpendicular to center transmission shaft line between transmission shaft and boss
Throttle effect between gap produces sealing function.This sealing belongs to non-contacting seal, is not contacted between axis and flange, forever without abrasion,
Sealing element need not be replaced, overcome using outside framework oil seal deficiency easy to wear, but since dust can pass through axis
Gap between flange is entered inside gear reducer, and has a small amount of lubricating oil or oil gas can be by the clearance leakage between axis and flange
To outside gear reducer.Therefore it is dust-proof and oil-leakage-prevention effect is undesirable using the structure.
Utility model content
The purpose of this utility model is that：It is easy using skeleton oil seal structure for current mining gear reducer shaft end seal
Wear, cause lubricating oil to be leaked from shaft end, it is necessary to often replace, heavy workload is difficult in maintenance；Using mechanical labyrinth radially
Although sealing structure can overcome the shortcomings of easy to wear using outside framework oil seal, it is necessary to often replace, dust-proof and oil-leakage-prevention effect is not
The series of technical such as ideal, there is provided a kind of multiple axial mechanical labyrinth formula sealing structure in new mining gear reducer shaft end, has
Effect solves gear reducer shaft end oil leak and dust into the technical problem inside gear reducer.
The utility model is achieved by the following technical programs.
A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end, it includes bearing, axle sleeve, shaft end method
Blue, box body of speed reducer and transmission shaft, the side wall of box body of speed reducer are provided with through hole, and the boss is installed on the outer of through hole
Endface, is provided with axis hole, transmission shaft is installed on inside box body of speed reducer through axis hole, is being driven through the end face of boss
The shaft shoulder at two is provided with the outer end of axis, the bearing is installed between two shaft shoulders, the inner wall of the outer baffle ring and through hole of bearing
It is engaged, the outer end of transmission shaft is extended on the outside of axis hole, and the axle sleeve is installed between transmission shaft and axis hole, wherein：
The bearing includes inner bearing and outer bearing, between being provided between inner bearing and the end face of outer bearing opposite side
Gap, is provided with the spacer ring bearing between the outer baffle ring of the outer baffle ring and outer bearing that are fixedly mounted on inner bearing Wai in the gap,
It is provided with the outer spacer ring of bearing along the diametric oilhole of transmission shaft, with oil-hole location corresponding position along transmission shaft on box body of speed reducer
Diametric(al) be provided with fuel feed hole；Distance collar is installed, perpendicular to transmission shaft on distance collar at the end face outside of outer bearing
Axis direction sets distance collar oil return opening, and gear oil is provided between the end face outside of distance collar and the inner side end of boss
Circle；
The axle sleeve includes internal axle sleeve and outer shaft, and Sealing shield ring one, Sealing shield ring are provided with the periphery of internal axle sleeve
One is integrally formed with internal axle sleeve, is provided with Sealing shield ring two on the periphery of outer shaft, Sealing shield ring two and outer shaft one into
Type；The end face outside of the Sealing shield ring one and the inner side end of boss are oppositely arranged, the end face outside of Sealing shield ring one
On be provided with least axial seal groove one parallel with the axis direction of transmission shaft together, on the inner side end of boss
Be provided with the matched axial seal boss of axial seal groove one, set between axial seal groove one and axial seal boss
Gap is equipped with, axial seal labyrinth, one outboard end of Sealing shield ring are formed between Sealing shield ring one and the opposing end surface of boss
At least one of radial direction oil groove perpendicular with the axis direction of transmission shaft is additionally provided with face；The inner side end of Sealing shield ring two with
The end face outside of boss is oppositely arranged, and at least one of axis with transmission shaft is provided with the inner side end of Sealing shield ring two
The parallel axial seal groove two in direction, is provided with the end face outside of boss matched with axial seal groove two
Axial seal boss, sets between axial seal groove two and axial seal boss and has the gap, Sealing shield ring two and boss
Opposing end surface between form axial seal labyrinth；
Chamber portion between boss inner side end and oil baffle is provided with oil return opening, boss inside edge
Diametric(al) is provided with boss oil return opening；Babinet oil return hole one and babinet oil return are provided with the decelerating chassis body sidewall
Hole two, one end of babinet oil return hole one are connected with distance collar oil return opening and oil return opening, the other end of babinet oil return hole one and deceleration
The connects with the internal cavities of box body；One end of babinet oil return hole two is connected with boss oil return opening, babinet oil return hole two it is another
One end and the connects with the internal cavities of box body of speed reducer.
Further, outer shaft is fixed on transmission shaft by holding screw.
Further, set and have the gap between the inner hole surface of oil baffle and internal axle sleeve outer circumference surface.
Grease pump oil outlet is communicated with oil inlet, and lubricating oil is entered by the oil groove and oilhole processed on spacer ring outside bearing
At cavity among inside and outside two bearings, the lubrication to bearing is realized, a part of lubricating oil is flowed back to by the bearing installed in inner side
To inside box body of speed reducer, another part lubricating oil is flowed between outboard bearing and oil baffle by the bearing installed in outside
At cavity, subtract into the lubricating oil at the cavity due to playing the role of oil baffle, most of flowed back to by the oil return hole on babinet
In fast box body, only a small amount of lubricating oil enters oil baffle, internal axle sleeve and axis by the gap between oil baffle and internal axle sleeve
End flanges formed cavity in, this parts of lubricating oil be also pass through it is same at cavity between above-mentioned outboard bearing and oil baffle
Oil return hole is flowed back in decelerating chassis body.
At this moment if also minimal amount of lubricating oil is not flow back into decelerating chassis body, then will be by being machined with axis
The labyrinth formed to the internal axle sleeve of sealed groove with the boss for being machined with axial seal groove enters returning on boss
Oil groove, oil-recovery tank are connected with the babinet oil return hole one on box body of speed reducer, and box body of speed reducer is flowed back to by babinet oil return hole one
It is internal.
In addition, an outer shaft for being machined with axial seal groove is also installed in gear reducer shaft end, with being equally machined with axis
A labyrinth is formed to the boss of sealed groove, can effectively avoid the dust in working environment from entering box body of speed reducer
It is internal.
The utility model has the advantages that compared with prior art.
1st, since the sealing structure is not contacted all using mechanical labyrinth seal form, sealing element with axis, forever without abrasion,
Without needing to change, will not produce because abrasion needs replacing the situation of sealing.
2nd, since the sealing structure is designed with multiple tracks oil return, multiple labyrinth seal design, even box body of speed reducer or
, will not be from the gap in labyrinth because the oil gas of high temperature generation can be also sufficiently cooled behind multiple tracks labyrinth at bearing
In be leaked in air, therefore the leakage to lubricating oil and oil gas has good sealing effect.
3rd, the axial seal groove processed on outer shaft is formed with the axial seal groove processed on boss outer end face
Mechanical labyrinth, can effectively avoid the dust in working environment from entering inside box body of speed reducer, therefore with dust-proof well
Effect.
4th, processed on babinet, internal axle sleeve, outer shaft and boss oil return hole or sealed groove facilitate it is feasible.
Brief description of the drawings
Fig. 1 is the utility model overall structure diagram.
In figure, 1 is transmission shaft, and 2 be box body of speed reducer, and 3 be inner bearing, and 4 be outer bearing, and 5 be the outer spacer ring of bearing, and 6 be fixed
Away from ring, 7 be oil baffle, and 8 be internal axle sleeve, and 9 be boss, and 10 be outer shaft, and 11 be holding screw, and 12 be babinet oil return hole
One, 13 be babinet oil return hole two, and 14 be fuel feed hole.
Embodiment
Elaborate with reference to embodiment to the utility model：The present embodiment be using technical solutions of the utility model as
Premise is implemented, and gives detailed embodiment and specific operating process, but the scope of protection of the utility model is unlimited
In the following examples.
A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end as shown in Figure 1, it includes bearing, axis
Set, boss 9, box body of speed reducer 2 and transmission shaft 1, the side wall of box body of speed reducer 2 are provided with through hole, the boss 9
It is installed at the outer end face of through hole, the end face of boss 9 is provided with axis hole, transmission shaft 1 is installed on deceleration through axis hole
Inside box body 2, the shaft shoulder at two is provided with the outer end of transmission shaft 1, the bearing is installed between two shaft shoulders, bearing
Outer baffle ring is engaged with the inner wall of through hole, and the outer end of transmission shaft 1 is extended on the outside of axis hole, and the axle sleeve is installed on transmission shaft 1
Between axis hole, wherein：
The bearing includes inner bearing 3 and outer bearing 4, is provided between the end face of 4 opposite side of inner bearing 3 and outer bearing
Gap, be provided with the gap bearing between the outer baffle ring of the outer baffle ring and outer bearing 4 that are fixedly mounted on inner bearing 3 Wai every
Ring 5, is provided with the outer spacer ring 5 of bearing along 1 diametric oilhole of transmission shaft, on box body of speed reducer 2 with oil-hole location corresponding position
The diametric(al) of transmission shaft 1 is provided with fuel feed hole 14；Distance collar 6 is installed, on distance collar 6 at the end face outside of outer bearing 4
Perpendicular to the axis direction of transmission shaft 1, distance collar oil return opening, the end face outside of distance collar 6 and the medial extremity of boss 9 are set
Oil baffle 7 is installed between face；
The axle sleeve includes internal axle sleeve 8 and outer shaft 10, and Sealing shield ring one is provided with the periphery of internal axle sleeve 8, seals
Baffle ring one is integrally formed with internal axle sleeve 8, and Sealing shield ring two, Sealing shield ring two and outer shaft are provided with the periphery of outer shaft 10
10 are integrally formed；The end face outside and the inner side end of boss 9 of the Sealing shield ring one are oppositely arranged, Sealing shield ring one
At least one of axial seal groove one parallel with the axis direction of transmission shaft 1 is provided with end face outside, boss 9
It is provided with inner side end and the matched axial seal boss of axial seal groove one, axial seal groove one and axial seal
Set and have the gap between boss, axial seal labyrinth, sealing gear are formed between the opposing end surface of Sealing shield ring one and boss 9
Enclose in an end face outside and be additionally provided with least one of radial direction oil groove perpendicular with the axis direction of transmission shaft 1；Sealing shield ring two
The end face outside of inner side end and boss 9 be oppositely arranged, be provided with the inner side end of Sealing shield ring two at least together
The axial seal groove two parallel with the axis direction of transmission shaft 1, be provided with the end face outside of boss 9 with it is axial close
The matched axial seal boss of groove two is sealed, sets and has the gap between axial seal groove two and axial seal boss, seal
Axial seal labyrinth is formed between the opposing end surface of baffle ring two and boss 9；
Chamber portion between 9 inner side end of boss and oil baffle 7 is provided with oil return opening, in boss 9
Portion is diametrically disposed boss oil return opening；Be provided with 2 side wall of box body of speed reducer babinet oil return hole 1 with
Babinet oil return hole 2 13, one end of babinet oil return hole 1 are connected with distance collar oil return opening and oil return opening, babinet oil return hole 1
The other end and box body of speed reducer 2 connects with the internal cavities；One end of babinet oil return hole 2 13 is connected with boss oil return opening,
The other end of babinet oil return hole 2 13 and the connects with the internal cavities of box body of speed reducer 2.
Further, outer shaft 10 is fixed on transmission shaft 1 by holding screw 11.
Further, set and have the gap between 8 outer circumference surface of the inner hole surface of oil baffle 7 and internal axle sleeve.
The use process of the utility model is：
First, spacer ring 5, outer bearing 4 outside inner bearing 3, bearing are in turn mounted on transmission shaft 1, make inner bearing 3 and transmission
The shaft shoulder clamping set on axis 1, above-mentioned mounted component is installed in box body of speed reducer 2 together；Then, by distance collar 6
In bearing hole of the oil baffle 7 loaded on box body of speed reducer 2, boss 9 is secured by bolts on babinet 2.
The distance collar oil return hole of 6 lower part of distance collar processing is connected with oil return hole 12,7 inner hole surface of oil baffle and internal axle sleeve 8
Less gap is left between outer circumference surface.Internal axle sleeve 8 is machined with parallel to transmission shaft 1 on the end face opposite with boss 9
The axial seal groove one and seal boss of the mutual cooperation of center line, form mechanical labyrinth, are also machined with internal axle sleeve 8 vertical
In the radial seal groove of 1 center line of transmission shaft；Cavity portion between 9 inner side end of boss and oil baffle 7 sets up separately
Oil return opening is equipped with, boss oil return hole is machined with boss 9, is connected respectively with oil return hole 12 and babinet oil return hole 13
It is logical.Outer shaft 10 and boss 9 are to the axial seal ditch that the mutual cooperation parallel to 1 center line of transmission shaft is machined with opposite
Groove two and seal boss, form mechanical labyrinth.
When it is implemented, the oil inlet 14 in box body of speed reducer 2 should be connected with the oil outlet of grease pump, the profit after lubrication
Lubricating oil is flow back into box body of speed reducer 2.
In the present embodiment, 8 interference of internal axle sleeve is connected on transmission shaft 1, and outer shaft 10 is fixed on by holding screw 11
On transmission shaft 1, internal axle sleeve 8 and outer shaft 10 are together as transmission shaft 1 is rotated, bearing outer spacer ring 5, distance collar 6, oil baffle
7 and 9 opposite case 2 of boss be actionless.
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
It is any to be familiar with those skilled in the art in the technical scope that the utility model discloses in this, the change that can be readily occurred in
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be with the power
Subject to the protection domain that profit requires.
Claims (3)
1. a kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end, it includes bearing, axle sleeve, boss
（9）, box body of speed reducer（2）And transmission shaft（1）, box body of speed reducer（2）Side wall be provided with through hole, the boss（9）
It is installed at the outer end face of through hole, through boss（9）End face be provided with axis hole, transmission shaft（1）It is installed on through axis hole
Box body of speed reducer（2）Inside, in transmission shaft（1）Outer end on be provided with the shaft shoulder at two, the bearing be installed on two shaft shoulders it
Between, the outer baffle ring of bearing is engaged with the inner wall of through hole, transmission shaft（1）Outer end extend on the outside of axis hole, the axle sleeve peace
Loaded on transmission shaft（1）Between axis hole, it is characterised in that：
The bearing includes inner bearing（3）With outer bearing（4）, inner bearing（3）With outer bearing（4）Set between the end face of opposite side
Gap is equipped with, is provided with the gap and is fixedly mounted on inner bearing（3）Outer baffle ring and outer bearing（4）Outer baffle ring between
The outer spacer ring of bearing（5）, the outer spacer ring of bearing（5）On be provided with along transmission shaft（1）Diametric oilhole, box body of speed reducer（2）On
With oil-hole location corresponding position along transmission shaft（1）Diametric(al) be provided with fuel feed hole（14）；Outer bearing（4）End face outside at pacify
Equipped with distance collar（6）, distance collar（6）On perpendicular to transmission shaft（1）Axis direction set distance collar oil return opening, distance collar（6）
End face outside and boss（9）Inner side end between oil baffle is installed（7）；
The axle sleeve includes internal axle sleeve（8）With outer shaft（10）, internal axle sleeve（8）Periphery on be provided with Sealing shield ring one, it is close
Block circle one and internal axle sleeve（8）It is integrally formed, outer shaft（10）Periphery on be provided with Sealing shield ring two, Sealing shield ring two with
Outer shaft（10）It is integrally formed；The end face outside and boss of the Sealing shield ring one（9）Inner side end be oppositely arranged, it is close
At least one and transmission shaft are provided with the end face outside of block circle one（1）The parallel axial seal groove of axis direction
One, boss（9）Inner side end on be provided with and the matched axial seal boss of axial seal groove one, axial seal
Set and have the gap between groove one and axial seal boss, Sealing shield ring one and boss（9）Opposing end surface between formed
Axial seal labyrinth, is additionally provided with one end face outside of Sealing shield ring at least together and transmission shaft（1）Axis direction it is perpendicular
Radial direction oil groove；The inner side end and boss of Sealing shield ring two（9）End face outside be oppositely arranged, Sealing shield ring two it is interior
At least one and transmission shaft are provided with side end face（1）The parallel axial seal groove two of axis direction, boss（9）
End face outside on be provided with and the matched axial seal boss of axial seal groove two, axial seal groove two and axial close
Set and have the gap between envelope boss, Sealing shield ring two and boss（9）Opposing end surface between form axial seal labyrinth；
Positioned at boss（9）Inner side end and oil baffle（7）Between chamber portion be provided with oil return opening, boss（9）
Inside is diametrically disposed boss oil return opening；The box body of speed reducer（2）Babinet oil return hole one is provided with side wall
（12）With babinet oil return hole two（13）, babinet oil return hole one（12）One end connected with distance collar oil return opening and oil return opening, babinet
Oil return hole one（12）The other end and box body of speed reducer（2）Connects with the internal cavities；Babinet oil return hole two（13）One end and axis
End flanges oil return opening connects, babinet oil return hole two（13）The other end and box body of speed reducer（2）Connects with the internal cavities.
2. the multiple axial mechanical labyrinth formula sealing structure in a kind of mining gear reducer shaft end according to claim 1, its feature
It is：Outer shaft（10）Pass through holding screw（11）It is fixed on transmission shaft（1）On.
3. the multiple axial mechanical labyrinth formula sealing structure in a kind of mining gear reducer shaft end according to claim 1, its feature
It is：Oil baffle（7）Inner hole surface and internal axle sleeve（8）Set and have the gap between outer circumference surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721314051.7U CN207278846U (en) | 2017-10-12 | 2017-10-12 | A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721314051.7U CN207278846U (en) | 2017-10-12 | 2017-10-12 | A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end |
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| Publication Number | Publication Date |
|---|---|
| CN207278846U true CN207278846U (en) | 2018-04-27 |
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ID=61980072
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721314051.7U Active CN207278846U (en) | 2017-10-12 | 2017-10-12 | A kind of multiple axial mechanical labyrinth formula sealing structure in mining gear reducer shaft end |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494144A (en) * | 2018-05-04 | 2018-09-04 | 苏州瑞纳电气科技有限公司 | A kind of axle sealing structure of the grease lubrication of motor axis |
| CN110053649A (en) * | 2019-03-11 | 2019-07-26 | 上海磁浮交通发展有限公司 | A kind of floating track switch driving shafting of waterproof magnetic |
| CN111396566A (en) * | 2020-04-24 | 2020-07-10 | 湖南三一快而居住宅工业有限公司 | Shaft end sealing structure and material distributor |
| CN113357369A (en) * | 2021-05-11 | 2021-09-07 | 中国船舶重工集团武汉船舶工业有限公司 | Sealing structure of speed reducer |
| DE102021002931A1 (en) | 2020-07-01 | 2022-01-05 | Sew-Eurodrive Gmbh & Co Kg | Transmission with a shaft, at least one first bearing, a housing part and a cover |
| CN114060704A (en) * | 2021-12-01 | 2022-02-18 | 上海亿博机电设备有限公司 | Lubricating system and method of intermediate bearing for long spiral |
-
2017
- 2017-10-12 CN CN201721314051.7U patent/CN207278846U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108494144A (en) * | 2018-05-04 | 2018-09-04 | 苏州瑞纳电气科技有限公司 | A kind of axle sealing structure of the grease lubrication of motor axis |
| CN108494144B (en) * | 2018-05-04 | 2020-04-07 | 苏州瑞纳电气科技有限公司 | Grease lubricated shaft sealing structure of motor transmission shaft |
| CN110053649A (en) * | 2019-03-11 | 2019-07-26 | 上海磁浮交通发展有限公司 | A kind of floating track switch driving shafting of waterproof magnetic |
| CN111396566A (en) * | 2020-04-24 | 2020-07-10 | 湖南三一快而居住宅工业有限公司 | Shaft end sealing structure and material distributor |
| DE102021002931A1 (en) | 2020-07-01 | 2022-01-05 | Sew-Eurodrive Gmbh & Co Kg | Transmission with a shaft, at least one first bearing, a housing part and a cover |
| WO2022002432A2 (en) | 2020-07-01 | 2022-01-06 | Sew-Eurodrive Gmbh & Co. Kg | Transmission with a shaft, at least one first bearing, a housing part, and a cover |
| WO2022002432A3 (en) * | 2020-07-01 | 2022-03-03 | Sew-Eurodrive Gmbh & Co. Kg | Transmission with a shaft, at least one first bearing, a housing part, and a cover |
| CN113357369A (en) * | 2021-05-11 | 2021-09-07 | 中国船舶重工集团武汉船舶工业有限公司 | Sealing structure of speed reducer |
| CN113357369B (en) * | 2021-05-11 | 2024-05-28 | 中国船舶重工集团武汉船舶工业有限公司 | Sealing structure of speed reducer |
| CN114060704A (en) * | 2021-12-01 | 2022-02-18 | 上海亿博机电设备有限公司 | Lubricating system and method of intermediate bearing for long spiral |
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