CN104776203A - Sealing structure of reducer input shaft - Google Patents
Sealing structure of reducer input shaft Download PDFInfo
- Publication number
- CN104776203A CN104776203A CN201510097244.0A CN201510097244A CN104776203A CN 104776203 A CN104776203 A CN 104776203A CN 201510097244 A CN201510097244 A CN 201510097244A CN 104776203 A CN104776203 A CN 104776203A
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- China
- Prior art keywords
- input shaft
- slip body
- annular
- seal ring
- oil sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 title claims abstract description 75
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 25
- 230000009467 reduction Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
Abstract
The invention discloses a sealing structure of a reducer input shaft and aims to provide a sealing structure of an input shaft, which can effectively solve the problems of time and labor consumption and heavy workload when a shaft seal needs to be replaced in the condition that the shaft seal of the reducer input shaft leaks in the prior art. The sealing structure comprises a reducer case body, the input shaft and an input shaft sealing cover, wherein the input shaft passes through the input shaft sealing cover and is installed on the reducer case body through a bearing, an oil seal is arranged between the input shaft sealing cover and the input shaft, and a standby input oil seal structure is arranged between the input shaft sealing cover and the input shaft and is positioned on the outer side of the reducer case body.
Description
Technical field
The present invention relates to a kind of retarder, be specifically related to a kind of reducer input shaft sealing configuration.
Background technique
Retarder is a kind of mechanical transmission common at present, and it plays coupling rotating speed and transmitting torque between prime mover and working machine or actuator.Current reducer structure generally includes casing, input shaft, input gear, input shaft end-blocking lid, output gear, output shaft and output shaft end-blocking lid, they successively transmission complete speed-down action.Shaft seal is provided with between shaft seal end cap and input/shaft; And shaft seal leakage of oil is bad problem common in current retarder, one shaft seal leakage of oil occurs needs to change oil sealing timely.Cause the reason of shaft seal leakage of oil varied, more common reason comprise shaft seal (seal ring) wear and tear in Long-Time Service process or grease accumulation in reasons such as shaft seal places, all can easily cause retarder input/shaft shaft seal place produce Leakage.Current retarder once there is shaft seal Leakage, then needs to change shaft seal; And when changing shaft seal, need speed reducer to disintegrate, pull down coupling, take out reductor shaft end-blocking lid, then change shaft seal, and reinstall; This make the workload changing shaft seal this process large, waste time and energy.
Summary of the invention
The object of the invention is to overcome retarder in prior art once there is the shaft seal leakage of oil of input shaft, then need the shaft seal changing input shaft, waste time and energy, problem that workload is large, there is provided a kind of when effectively can solve the shaft seal leakage of oil of current reducer input shaft, then need to change shaft seal, waste time and energy, the reducer input shaft sealing configuration of problem that workload is large.
Technological scheme of the present invention is:
A kind of reducer input shaft sealing configuration, comprises reduction case, input shaft and input shaft end-blocking lid, and described input shaft passes input shaft end-blocking lid and is arranged on reduction case by bearing, is provided with oil sealing between described input shaft end-blocking lid and input shaft; Input oil seal structure for subsequent use is also provided with between described input shaft end-blocking lid and input shaft, this input oil seal structure for subsequent use is positioned at outside reduction case, input oil seal structure for subsequent use comprises and is arranged on the fixing body in first on input shaft end-blocking lid exterior edge face, is slidably arranged on the first slip body in the first fixing body and is arranged on first fixing the first buckle connecting structure between body and the first slip body; Described first fixing body is set on input shaft, and coaxially arranges with input shaft, and described first slip body is set on input shaft, and coaxially arranges with input shaft; Described first buckle connecting structure comprises and is arranged on the first snap ring on the first fixing body inner side surface and at least one to be arranged on the first slip body end face and first Elastic buckle that can coordinate with the first snap ring, described first snap ring, the first Elastic buckle and input shaft end-blocking lid are positioned at the same side of the first slip body; Described first fixing is provided with the first exterior seal ring between body and the first slip body, be provided with the first inner seal ring, and the first inner seal ring is fixed on the first slip body inner side surface between described first slip body and input shaft; On described input shaft outer side surface, be positioned at and be provided with the first annular outside reduction case and step down groove; Described first fixing body inner side surface is provided with the first outer ring spacing block set, on first flip sleeve outside, be positioned at inside the first outer ring spacing block set and be provided with the first annular spacing block set, on described first flip sleeve outside, be positioned at the first external side of fixed cover and be provided with collar stop, on the first slip body, the first fixing being provided with between body end face and collar stop, annular spacing block set in first can be made to be resisted against the first pretension Compress Spring on the first outer ring spacing block set; When in first, annular spacing block set is resisted against on the first outer ring spacing block set, described first inner seal ring is positioned at the first annular and steps down groove, and the first inner seal ring and the first annular are stepped down between groove inner wall and be provided with gap; When after the first Elastic buckle and the first snap ring clamping, described first inner seal ring is positioned at the first annular and steps down outside groove, and forms Hermetical connecting structure between the first slip body and input shaft.
When the shaft seal leakage of oil of this programme input shaft (during oil sealing leakage of oil), only need the first slip body to push away toward in, and make the first Elastic buckle and the first snap ring clamping.When after the first Elastic buckle and the first snap ring clamping, the first inner seal ring is positioned at the first annular and steps down outside groove, and forms novel sealing linkage structure between the first slip body and input shaft; Thus form novel sealing linkage structure between the first slip body outside shaft seal and input shaft, solve shaft seal Leakage, disintegration speed reducer can be eliminated like this, tear the operation that shaft joint etc. wastes time and energy open; Can effectively solve retarder in prior art once there is the shaft seal leakage of oil of input shaft, then need speed reducer to disintegrate, pull down coupling, take out reductor shaft end-blocking lid, then change shaft seal, and reinstall, waste time and energy, problem that workload is large.
As preferably, be provided with axis hole in the middle part of input shaft end-blocking lid, described input shaft is through this axis hole; Described axis hole inner side surface is provided with oil sealing mounting groove, and be provided with the annular pressing plate that can move axially along input shaft in oil sealing mounting groove, annular pressing plate is set on input shaft; Described oil sealing is hollow O-ring seal, and this oil sealing is arranged in oil sealing mounting groove, and described annular pressing plate is between oil sealing and the first slip body, and oil sealing and annular pressing plate fit tightly; Be provided with at least two guide through hole paralleled with input shaft in described oil sealing mounting groove side, near the side of the first slip body, and each guide through hole is uniform around input shaft circumference; Slidably be provided with axial push rod respectively in each guide through hole, one end of axial push rod is connected with annular pressing plate, and the other end is positioned at the first fixing body, and described annular pressing plate and axial push rod are positioned at the same side of the first slip body; When annular spacing block set is resisted against on the first outer ring spacing block set in first, between described axial push rod and the first slip body, there is gap; When the first slip body is passed toward oil sealing direction, and after making the first Elastic buckle and the first snap ring clamping, the end face of described first slip body is resisted against the end of axial push rod, and axial push rod is passed 0.3 to 1.2 millimeter toward oil sealing direction.
When the shaft seal leakage of oil of this programme input shaft, only need the first slip body to push away toward in, and make the first Elastic buckle and the first snap ring clamping.Owing to passing toward oil sealing direction when the first slip body, and after making the first Elastic buckle and the first snap ring clamping, the end face of the first slip body is resisted against the end of axial push rod, and axial push rod is passed 0.3 to 1.2 millimeter toward oil sealing direction; Such annular pressing plate will push oil sealing, simultaneously because oil sealing is hollow O-ring seal (hollow O-ring seal has larger deformation quantity), to protrude toward input shaft after oil sealing is by annular pressing plate extruding, increase the mating face between oil sealing and input shaft and positive pressure, thus the Hermetical connecting structure repaired between oil sealing and input shaft, and coordinate input oil seal structure for subsequent use, two seals structure before and after new one-tenth on input shaft, the sealing effect of further raising input shaft, effectively solves further, prevents shaft seal Leakage.
As preferably, be threaded connection between axial push rod and annular pressing plate.
As preferably, the first Elastic buckle comprises and to be arranged on the first slip body end face and the elastic arm extended along input shaft and the fixture block that is arranged on elastic arm end are formed.
As preferably, the step down cross section of groove of the first annular is circular arc.
As preferably, the first flip sleeve outside is provided with the first exterior seal ring mounting groove, and described first exterior seal ring is fixedly installed in the first exterior seal ring mounting groove.
As preferably, the first slip body inner side surface is provided with the first inner seal ring mounting groove, and described first inner seal ring is fixedly installed in the first inner seal ring mounting groove.
As preferably, be threaded connection between collar stop and the first slip body.
The invention has the beneficial effects as follows: can effectively solve reducer input shaft in prior art once there is shaft seal leakage of oil, then need to change shaft seal, waste time and energy, problem that workload is large.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention.
Fig. 2 is the partial enlarged drawing at A place in Fig. 1.
Fig. 3 is a kind of partial structurtes schematic diagram after the first Elastic buckle of the present invention and the first snap ring clamping.
In figure: reduction case 1, input shaft 2, input shaft end-blocking lid 3, oil sealing 31, axis hole 32, oil sealing mounting groove 33, input oil seal structure 4, first buckle connecting structure 41, first snap ring 41a for subsequent use, the first Elastic buckle 41b, the first fixing body 42, first annular are stepped down annular spacing block set 49, the 3rd exterior seal ring 410 in groove 43, first inner seal ring 44, first slip body 45, first pretension Compress Spring 46, collar stop 47, first outer ring spacing block set 48, first, annular pressing plate 5, axial push rod 51.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail:
Embodiment 1: as shown in Figure 1, and a kind of reducer input shaft sealing configuration comprises reduction case 1, input shaft 2 and input shaft end-blocking lid 3.Input shaft is passed input shaft end-blocking lid and is arranged on reduction case by bearing.Oil sealing 31 is provided with between input shaft end-blocking lid and input shaft.Oil sealing is seal ring.
As shown in Figure 1 and Figure 2, input oil seal structure 4 for subsequent use is also provided with between input shaft end-blocking lid and input shaft.This input oil seal structure for subsequent use is positioned at outside reduction case.Input oil seal structure for subsequent use comprises and is arranged on the fixing body 42 in first on input shaft end-blocking lid exterior edge face, is slidably arranged on the first slip body 45 in the first fixing body and is arranged on first fixing the first buckle connecting structure 41 between body and the first slip body.First fixing body is set on input shaft, and coaxially arranges with input shaft.First slip body is set on input shaft, and coaxially arranges with input shaft.First buckle connecting structure comprises and is arranged on the first snap ring 41a on the first fixing body inner side surface and at least one to be arranged on the first slip body end face and the first Elastic buckle 41b that can coordinate with the first snap ring.The first Elastic buckle quantity in the present embodiment is four, and four the first Elastic buckles are uniform around input shaft circumference.First snap ring, the first Elastic buckle and input shaft end-blocking lid are positioned at the same side of the first slip body.First Elastic buckle comprise be arranged on the first slip body end face and along input shaft extend elastic arm and be arranged on elastic arm end fixture block form.
First fixing is provided with the first exterior seal ring 410 between body and the first slip body.First flip sleeve outside is provided with the first exterior seal ring mounting groove, and the first exterior seal ring is fixedly installed in the first exterior seal ring mounting groove.Be provided with the first inner seal ring 44 between first slip body and input shaft, and the first inner seal ring is fixed on the first slip body inner side surface.First slip body inner side surface is provided with the first inner seal ring mounting groove, and the first inner seal ring is fixedly installed in the first inner seal ring mounting groove.On input shaft outer side surface, be positioned at and be provided with the first annular outside casing and step down groove 43.The step down cross section of groove of first annular is circular arc.
First fixing body inner side surface is provided with the first outer ring spacing block set 48.On first flip sleeve outside, be positioned at inside the first outer ring spacing block set and be provided with the first annular spacing block set 49.On first flip sleeve outside, be positioned at the first external side of fixed cover and be provided with collar stop 47.Be threaded connection between collar stop and the first slip body.Fix on first slip body, first and be provided with the first pretension Compress Spring 46 between body end face and collar stop, this first pretension Compress Spring can make annular spacing block set in first be resisted against on the first outer ring spacing block set.
As shown in Figure 2, when in first, annular spacing block set is resisted against on the first outer ring spacing block set, the first inner seal ring is positioned at the first annular and steps down groove, and the first inner seal ring and the first annular are stepped down between groove inner wall and be provided with gap.As shown in Figure 3, when after the first Elastic buckle and the first snap ring clamping, first inner seal ring is positioned at the first annular and steps down outside groove (i.e. the first inner seal ring and the first annular step down groove be in staggered distribution), and forms Hermetical connecting structure between the first slip body and input shaft.
As shown in Figure 1 and Figure 2, when input oil seal structure for subsequent use does not work, in first, annular spacing block set is resisted against on the first outer ring spacing block set, and the first inner seal ring is positioned at the first annular and steps down groove, and the first inner seal ring and the first annular are stepped down between groove inner wall and be provided with gap; In retarder working procedure, the first inner seal ring can not be worn like this.
As shown in Figure 1, Figure 3, when the shaft seal leakage of oil of input shaft, operator only needs the first slip body to pass toward oil sealing direction, and make the first Elastic buckle and the first snap ring clamping, now the first inner seal ring is positioned at the first annular and steps down outside groove, and novel sealing linkage structure is formed between the first slip body and input shaft, thus form novel sealing linkage structure between the first slip body outside shaft seal and input shaft, solve shaft seal Leakage.
Embodiment 2: all the other structures of the present embodiment are with reference to embodiment 1, and its difference is:
As shown in Figure 1 and Figure 2, axis hole 32 is provided with in the middle part of input shaft end-blocking lid.Input shaft is through this axis hole.Axis hole inner side surface is provided with oil sealing mounting groove 33.The annular pressing plate 5 that can move axially along input shaft is provided with in oil sealing mounting groove.Annular pressing plate is set on input shaft.Oil sealing 31 is hollow O-ring seal.This oil sealing is arranged in oil sealing mounting groove.Annular pressing plate is between oil sealing and the first slip body.Oil sealing and annular pressing plate fit tightly; Simultaneously oil sealing and oil sealing mounting groove bottom surface and fit tightly away from the oil sealing mounting groove side of the first slip body.Be provided with four guide through hole paralleled with input shaft in oil sealing mounting groove side, near the side of the first slip body, and each guide through hole is uniform around input shaft circumference.Axial push rod 51 is slidably provided with respectively in each guide through hole.One end of axial push rod is connected with annular pressing plate, and the other end is positioned at the first fixing body.Be threaded connection between axial push rod and annular pressing plate.Annular pressing plate and axial push rod are positioned at the same side of the first slip body.
As shown in Figure 2, when annular spacing block set is resisted against on the first outer ring spacing block set in first, between axial push rod and the first slip body, there is gap.As shown in Figure 3, when the first slip body is passed toward oil sealing direction, and after making the first Elastic buckle and the first snap ring clamping, the end face of the first slip body is resisted against the end of axial push rod, and axial push rod is passed 0.3 millimeter or 0.5 millimeter or 0.8 millimeter or 1.2 millimeters toward oil sealing direction.
Claims (8)
1. a reducer input shaft sealing configuration, comprise reduction case, input shaft and input shaft end-blocking lid, described input shaft passes input shaft end-blocking lid and is arranged on reduction case by bearing, it is characterized in that, between described input shaft end-blocking lid and input shaft, be provided with oil sealing; Input oil seal structure for subsequent use is also provided with between described input shaft end-blocking lid and input shaft, this input oil seal structure for subsequent use is positioned at outside reduction case, input oil seal structure for subsequent use comprises and is arranged on the fixing body in first on input shaft end-blocking lid exterior edge face, is slidably arranged on the first slip body in the first fixing body and is arranged on first fixing the first buckle connecting structure between body and the first slip body; Described first fixing body is set on input shaft, and coaxially arranges with input shaft, and described first slip body is set on input shaft, and coaxially arranges with input shaft; Described first buckle connecting structure comprises and is arranged on the first snap ring on the first fixing body inner side surface and at least one to be arranged on the first slip body end face and first Elastic buckle that can coordinate with the first snap ring, described first snap ring, the first Elastic buckle and input shaft end-blocking lid are positioned at the same side of the first slip body;
Described first fixing is provided with the first exterior seal ring between body and the first slip body, be provided with the first inner seal ring, and the first inner seal ring is fixed on the first slip body inner side surface between described first slip body and input shaft; On described input shaft outer side surface, be positioned at and be provided with the first annular outside reduction case and step down groove;
Described first fixing body inner side surface is provided with the first outer ring spacing block set, on first flip sleeve outside, be positioned at inside the first outer ring spacing block set and be provided with the first annular spacing block set, on described first flip sleeve outside, be positioned at the first external side of fixed cover and be provided with collar stop, on the first slip body, the first fixing being provided with between body end face and collar stop, annular spacing block set in first can be made to be resisted against the first pretension Compress Spring on the first outer ring spacing block set;
When in first, annular spacing block set is resisted against on the first outer ring spacing block set, described first inner seal ring is positioned at the first annular and steps down groove, and the first inner seal ring and the first annular are stepped down between groove inner wall and be provided with gap; When after the first Elastic buckle and the first snap ring clamping, described first inner seal ring is positioned at the first annular and steps down outside groove, and forms Hermetical connecting structure between the first slip body and input shaft.
2. reducer input shaft sealing configuration according to claim 1, is characterized in that, is provided with axis hole in the middle part of described input shaft end-blocking lid, and described input shaft is through this axis hole; Described axis hole inner side surface is provided with oil sealing mounting groove, and be provided with the annular pressing plate that can move axially along input shaft in oil sealing mounting groove, annular pressing plate is set on input shaft; Described oil sealing is hollow O-ring seal, and this oil sealing is arranged in oil sealing mounting groove, and described annular pressing plate is between oil sealing and the first slip body, and oil sealing and annular pressing plate fit tightly;
Be provided with at least two guide through hole paralleled with input shaft in described oil sealing mounting groove side, near the side of the first slip body, and each guide through hole is uniform around input shaft circumference; Slidably be provided with axial push rod respectively in each guide through hole, one end of axial push rod is connected with annular pressing plate, and the other end is positioned at the first fixing body, and described annular pressing plate and axial push rod are positioned at the same side of the first slip body;
When annular spacing block set is resisted against on the first outer ring spacing block set in first, between described axial push rod and the first slip body, there is gap; When the first slip body is passed toward oil sealing direction, and after making the first Elastic buckle and the first snap ring clamping, the end face of described first slip body is resisted against the end of axial push rod, and axial push rod is passed 0.3 to 1.2 millimeter toward oil sealing direction.
3. reducer input shaft sealing configuration according to claim 2, is characterized in that, is threaded connection between described axial push rod and annular pressing plate.
4. reducer input shaft sealing configuration according to claim 1, is characterized in that, described first Elastic buckle comprise be arranged on the first slip body end face and along input shaft extend elastic arm and be arranged on elastic arm end fixture block form.
5. the reducer input shaft sealing configuration according to claim 1 or 2 or 3 or 4, is characterized in that, the step down cross section of groove of described first annular is circular arc.
6. the reducer input shaft sealing configuration according to claim 1 or 2 or 3 or 4, is characterized in that, described first flip sleeve outside is provided with the first exterior seal ring mounting groove, and described first exterior seal ring is fixedly installed in the first exterior seal ring mounting groove.
7. the reducer input shaft sealing configuration according to claim 1 or 2 or 3 or 4, is characterized in that, described first slip body inner side surface is provided with the first inner seal ring mounting groove, and described first inner seal ring is fixedly installed in the first inner seal ring mounting groove.
8. the reducer input shaft sealing configuration according to claim 1 or 2 or 3 or 4, is characterized in that, be threaded connection between described collar stop and the first slip body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097244.0A CN104776203B (en) | 2015-03-04 | 2015-03-04 | Reducer input shaft sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510097244.0A CN104776203B (en) | 2015-03-04 | 2015-03-04 | Reducer input shaft sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776203A true CN104776203A (en) | 2015-07-15 |
| CN104776203B CN104776203B (en) | 2017-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510097244.0A Expired - Fee Related CN104776203B (en) | 2015-03-04 | 2015-03-04 | Reducer input shaft sealing structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104776203B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691993A (en) * | 2017-04-07 | 2018-10-23 | 通用汽车环球科技运作有限责任公司 | Seal assembly for tooth sector input shaft |
| CN112728048A (en) * | 2021-01-05 | 2021-04-30 | 埃夫特智能装备股份有限公司 | Sealing structure and robot |
| CN112728048B (en) * | 2021-01-05 | 2024-04-30 | 埃夫特智能装备股份有限公司 | Sealing structure and robot |
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| CN203796906U (en) * | 2014-01-26 | 2014-08-27 | 唐山市丰润区鑫源机械制造有限公司 | Reducer input and output shaft end sealing device |
| CN204477265U (en) * | 2015-03-04 | 2015-07-15 | 盐城工学院 | A kind of reducer input shaft sealing configuration |
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2015
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| CN201177042Y (en) * | 2008-03-28 | 2009-01-07 | 宁波东力传动设备股份有限公司 | Combination type sealing structure for heavy-duty gear box high speed axis |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108691993A (en) * | 2017-04-07 | 2018-10-23 | 通用汽车环球科技运作有限责任公司 | Seal assembly for tooth sector input shaft |
| CN108691993B (en) * | 2017-04-07 | 2022-03-11 | 通用汽车环球科技运作有限责任公司 | Seal assembly for steering gear input shaft |
| CN112728048A (en) * | 2021-01-05 | 2021-04-30 | 埃夫特智能装备股份有限公司 | Sealing structure and robot |
| CN112728048B (en) * | 2021-01-05 | 2024-04-30 | 埃夫特智能装备股份有限公司 | Sealing structure and robot |
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| Publication number | Publication date |
|---|---|
| CN104776203B (en) | 2017-08-15 |
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