CN106763148A - A kind of anti-avulsion sliding bearing and antenna - Google Patents
A kind of anti-avulsion sliding bearing and antenna Download PDFInfo
- Publication number
- CN106763148A CN106763148A CN201710190750.3A CN201710190750A CN106763148A CN 106763148 A CN106763148 A CN 106763148A CN 201710190750 A CN201710190750 A CN 201710190750A CN 106763148 A CN106763148 A CN 106763148A
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- China
- Prior art keywords
- axle sleeve
- rotating shaft
- avulsion
- sliding bearing
- hole
- 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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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Support Of Aerials (AREA)
Abstract
The present invention provides a kind of anti-avulsion sliding bearing, including axle sleeve and the rotating shaft that is mutually assembled with the axle sleeve, and the axle sleeve includes positive stop end and installation end and its middle part offers the mounting hole at insertion two ends；The rotating shaft includes the auxiliary section that is placed in the mounting hole and is passed from the mounting hole and for connecting the extension of part to be supported, the auxiliary section of the axle sleeve and rotating shaft is designed to the axle sleeve and limits the rotating shaft to be come off from axle sleeve, so as to ensure the service life of antiwhip and extension bearing.In addition, present invention also offers a kind of antenna using the anti-avulsion sliding bearing.
Description
Technical field
The present invention relates to portable antenna field, specifically, should stop the present invention relates to a kind of anti-avulsion sliding bearing and use
Try to shirk responsibility the antenna of dynamic bearing.
Background technology
Two-dimentional adjustable antenna increased the adjustable functional module of remote horizontal on the basis of traditional antenna, remote controlled
Antenna automatically adjusts radiation direction, and realization is more accurately managed.
A kind of sliding bearing of rotation supporting role has been applied in the adjustable functional module of level.Ordinary circumstance, axle
The function of support rotation is held.But because the rotating shaft of bearing is fixed on base plate by fixed seat, and base plate and fixed seat are easy
Deformation causes rotating shaft to be come off from axle sleeve, or makes rotating shaft and axle sleeve because of the axial fit clearance that causes of part's machining errors
It is separated from each other, causes normally using for antenna impacted, in some instances it may even be possible to cause antenna to be damaged.
For its application circumstances, it is necessary to which bearing is improved, to prevent during antenna use, due to turning
Axle comes off from axle sleeve and influences the normal of antenna to use.
The content of the invention
The first object of the present invention aims to provide a kind of anti-avulsion sliding bearing for preventing rotating shaft from being come off from axle sleeve.
The second object of the present invention aims to provide a kind of antenna using above-mentioned bearing, to ensure that it normally uses and extends
Service life.
To achieve these goals, the present invention provides following technical scheme：
A kind of anti-avulsion sliding bearing, including axle sleeve and the rotating shaft that is mutually assembled with the axle sleeve, the axle sleeve includes spacing
End and installation end and its middle part offer the mounting hole at insertion two ends；The rotating shaft includes the auxiliary section being placed in the mounting hole
The auxiliary section of the extension with being passed from the mounting hole and for connecting part to be supported, the axle sleeve and rotating shaft is designed
The rotating shaft is limited into the axle sleeve to be come off from axle sleeve.
Preferably, the installation end of the axle sleeve and the auxiliary section of rotating shaft are corresponding, positive stop end and the rotating shaft of the axle sleeve
Extension is corresponding；The auxiliary section of the rotating shaft is provided with defining flange in its periphery, and the positive stop end of the axle sleeve is in the installation
The positive stop lug boss for defining flange described in unidirectional block is provided with hole.
Preferably, the defining flange is radially extended by the auxiliary section and formed.
Preferably, the positive stop lug boss is obliquely installed to the direction of positive stop end along the installation end towards axle center, the limit
Position flange is designed to be mutually twisted with positive stop lug boss when it is slided at positive stop lug boss.
Preferably, the extension of the rotating shaft is provided with least one first connecting poles, and it is from the end surface that stretches out to matching somebody with somebody
Conjunction portion extends, and is passed through for threaded connector and be connected with part to be supported.
Preferably, the auxiliary section is recessed groove by end face, and first connecting pole has what is connected with groove to lead to
Hole, so that threaded connector passes through through hole from the groove.
Preferably, the axle sleeve is provided with cover in the positive stop end, and offers the extension for the rotating shaft thereon
The resigning hole for passing and the connecting hole for being installed to the axle sleeve on external support body.
Preferably, the axle sleeve includes the inner ring and the outer ring that are coaxially disposed and are connected with the cover, between Internal and external cycle
Multiple second connecting poles are distributed with, each second connecting pole offers the through hole for connecting the connecting hole.
Preferably, it is provided with the reinforcement being connected with inner ring and outer ring between two neighboring second connecting pole.
Preferably, one end relative with the cover on the axle sleeve is provided with a pair alignment pins along sleeve diameter distribution.
Preferably, the axle sleeve is made with the rotating shaft of highstrenghtpiston or fiber-reinforced plastic.
A kind of antenna, including antenna cover, be fixed on upper and lower ends in antenna cover upper end installing plate and lower end install
Plate, the bearing for being fixed on upper end installing plate, the drive module for being fixed on lower end installing plate and it is connected to bearing and drive module
Between antenna-reflected plate, the bearing is above-mentioned anti-avulsion sliding bearing, wherein, the axle sleeve connects with the upper end installing plate
Connect, the rotating shaft is connected with the antenna-reflected plate.
Preferably, the upper end installing plate offers location hole corresponding with the alignment pin and set with the cover
The corresponding through hole of connecting hole.
Compared to existing technology, in the solution of the present invention, axle sleeve is mutually assembled with rotating shaft and used, wherein, the auxiliary section of rotating shaft
Be provided with defining flange in its periphery, the positive stop end of axle sleeve in being provided with positive stop lug boss in the mounting hole, during bearing working, by
In the presence of positive stop lug boss so that the defining flange can only between positive stop lug boss and external support body small range movement,
Come off from axle sleeve so as to limit rotating shaft, it is ensured that the stability in use of bearing, so as to ensure that normally using and prolong for antenna
The service life of antenna long.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by practice of the invention.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is that one embodiment of the invention stops the stereogram of dynamic bearing of trying to shirk responsibility；
Fig. 2 is the use state sectional view of anti-avulsion sliding bearing shown in Fig. 1；
Fig. 3 is the three-dimensional structure diagram of rotating shaft in anti-avulsion sliding bearing shown in Fig. 1；
Fig. 4 is the three-dimensional structure diagram of another angle of anti-skidding rotating shaft of anti-avulsion shown in Fig. 3；
Fig. 5 is the three-dimensional structure diagram of anti-avulsion sliding bearing bottom bracket axle shown in Fig. 1；
Fig. 6 is the three-dimensional structure diagram of another angle of anti-skidding axle sleeve of anti-avulsion shown in Fig. 5；
Fig. 7 is the three-dimensional structure diagram of antenna in one embodiment of the invention；
Fig. 8 is the three-dimensional structure diagram of upper end installing plate in antenna shown in Fig. 7.
Specific embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from start to finish
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
It is exemplary to scheme the embodiment of description, is only used for explaining the present invention, and is not construed as limiting the claims.
Fig. 1 and Fig. 2 collectively illustrate anti-avulsion sliding bearing 4 of the invention, are mountable in adjustable antenna, for supporting day
The spinfunction of line main body, in order to realize the remotely electricity tune function of horizontal azimuth of antenna.
The anti-avulsion sliding bearing 4 includes the axle sleeve 41 and the rotating shaft 42 that mutually assemble, wherein the rotating shaft 42 can relative axle
Set 41 is rotated, and the axle sleeve 41 defines that rotating shaft 42 small range can only be moved and cannot come off from it vertically.
The axle sleeve 41 axially includes installation end 412 and positive stop end 413 along it, and offers insertion two ends in the middle
Mounting hole 411.Wherein, the installation end 412 is used to for the bearing to be installed to external support body, and the upper end than following article is installed
On plate 2 (referring to Fig. 7).
The rotating shaft 42 axially includes auxiliary section 421 and extension 422 along it.Wherein, the auxiliary section 421 is placed in axle sleeve
In 41 mounting hole 411, and by the axle sleeve 41 constrain its along auxiliary section 421 to extension 422 move axially away from
From.The extension 422 is passed from mounting hole 411 and exposes to the positive stop end 413, to be connected to the portion to be supported of outside
Part, than on the antenna-reflected plate 6 (referring to Fig. 7) of following article, to be constituted support to antenna-reflected plate 6, and support its around the shaft 42
Axial-rotation.
In anti-avulsion sliding bearing of the invention, first, the mounting hole 411 is bigger in the aperture of the side of positive stop end 413
In rotating shaft 42 in the diameter of the side of extension 422, rotating shaft 42 is placed in mounting hole 411 after installation, and the rotating shaft is stretched out
Portion 422 almost fits with installation internal surface of hole 411, therefore, the free degree diametrically of rotating shaft 42 is almost completely restricted.Its
It is secondary, the axle sleeve 41 be designed to constrain the rotating shaft 42 along axial movement distance from auxiliary section 421 to extension 422.Therefore,
In this programme, rotating shaft 42 is only capable of small range movement in the axial direction and around axial rotation, the equal quilt in remaining multiple free degree
Limitation, therefore, it is possible to the purpose for realizing preventing rotating shaft 42 from departing from from axle sleeve 41, effectively ensures the stability in use of bearing 4 simultaneously
Extend its service life.
Preferably, the auxiliary section 421 of the rotating shaft 42 is provided with defining flange 423 in its periphery, the axle sleeve 41 it is spacing
End 413 is in the interior positive stop lug boss 4111 being provided with for defining flange 423 described in unidirectional block of the mounting hole 411.
As it was previously stated, the installation end 412 of the axle sleeve is used to connect external support body, therefore, in the installation of bearing 4
Afterwards, the defining flange 423 will between positive stop lug boss 4111 and external support body, therefore, rotating shaft 42 in the axial direction can only
The movement of small range.During anti-avulsion sliding bearing 4 works, although due to there is assembling when each parts are assembled in antenna
The problems such as error, rotating shaft 42 may reduce with the Bite size of axle sleeve 41, and now, rotating shaft 42 can be subject to along part side to be supported
To active force, but, in the present invention, due to the presence of positive stop lug boss 4111, unidirectional block defining flange 423 is along cooperation
Axial movement from portion 421 to extension 422, thus, can prevent rotating shaft 42 from departing from from axle sleeve 41, it is ensured that anti-avulsion sliding bearing 4
Stability simultaneously extends its service life.
Specifically, the defining flange 423 is radially extended by the auxiliary section 421 and formed.The defining flange 423 with
Rotating shaft 42 is integrally formed, and increased the toughness of defining flange 423, has been also convenient for production.
Preferably, the positive stop lug boss 4111 is inclined towards axle center to the direction of positive stop end 413 along the installation end 412 and set
Put, the defining flange 423 is configured to be mutually twisted with positive stop lug boss 4111 when it is slided at positive stop lug boss 4111.
As described above, antenna overall parts there are problems that when assembling, in the anti-avulsion sliding bearing 4
In the course of work, when the Bite size of rotating shaft 42 and axle sleeve 41 reduces, rotating shaft 42 can be made by along part direction to be supported
Firmly, but due to the stop of positive stop lug boss 4111, be distributed in average on defining flange 423 by the active force, of course,
The positive stop lug boss 4111 can also be subject to corresponding reaction force, and heretofore described positive stop lug boss 4111 is obliquely installed will be favourable
In decomposition active force thereon, so as to reduce the abrasion between defining flange 423 and positive stop lug boss 4111, increase rotating shaft
42 with the robustness of axle sleeve 41.Certainly, in embodiments of the invention, the angle of inclination to positive stop lug boss 4111 is not limited,
As long as defining flange 423 described in unidirectional block can be realized.
With reference to Fig. 3, in an embodiment of the present invention, the extension 422 of the rotating shaft 42 is provided with least one first connections
Post 4221, it is extended from the end face of the extension 422 to auxiliary section 421, and is available for threaded connector to pass through and part to be supported
Connection.First connecting pole, 4221 pairs of threaded connectors play restriction effect, prevent threaded connector from being worked in bearing 4
When produce and rock, strengthen anti-avulsion sliding bearing 4 and be attached thereto the soundness of parts.In addition, first connecting pole
The hole position for being used to be passed through for threaded connector on 4221 is counterbore, to save the occupancy to axial space in mounting hole.
In another embodiment of the present invention, can open up on the auxiliary section 421 of insertion rotating shaft 42 and the end face of extension 422 to
A few screwed hole, and be connected with part to be supported through the screwed hole by Nut column.In another embodiment of the present invention,
The part to be supported is provided with adapter sleeve with the junction of the rotating shaft 42, and the rotating shaft 42 can be inserted into the adapter sleeve and realize and treat
The tight fit connection of support member.It is apparent that the present invention countershaft 42 is not limited with the connected mode of part to be supported.
Preferably, with reference to Fig. 4, the auxiliary section 421 is recessed groove 4211, first connecting pole 4221 by end face
With the through hole connected with groove 4211, so that threaded connector passes through through hole from the groove 4211.It is readily appreciated that, it is described
Auxiliary section 421 is recessed groove by end face to be helped to mitigate the weight of rotating shaft 42, is conducive to the lightweight of bearing 4.In addition, institute
The internal edge for stating groove 4211 is provided with reinforcement 4123, the toughness for strengthening rotating shaft 42, further consolidates anti-avulsion slip
The overall structure of bearing 4.
Preferably, axle sleeve described in reference diagram 5 41 is provided with cover 4131 in the positive stop end 413, and offers confession thereon
Resigning hole 4132 and the connection for being installed to the axle sleeve 41 on external support body that the extension 422 of the rotating shaft 42 is passed
Hole 4133.In one embodiment of the present of invention, the connecting hole 4133 is screwed hole, and the axle sleeve 41 can pass through institute by screw
State the connection of screwed hole realization and external support body.In another embodiment of the present invention, the connecting hole 4133 is through hole, described
Dielectric material is filled with through hole, axle sleeve 41 can realize the company with external support body by tapping screw through the dielectric material
Connect.
Preferably, the axle sleeve 41 include be coaxially disposed and be connected with the cover 4131 inner ring (non-label, under
Together) and outer ring (non-label, similarly hereinafter), multiple second connecting poles 4122 are distributed between inside and outside circle, each described second connecting pole
4122 offer the through hole for connecting the connecting hole 4133, as shown in Figure 6.
Preferably, it is provided with the reinforcement 4123 being connected with inner ring and outer ring between two neighboring second connecting pole 4122.
The reinforcement 4123 is used to strengthen the toughness of axle sleeve 41, further consolidates the overall structure of anti-avulsion sliding bearing 4.
Preferably, one end relative with the cover 4131 on the axle sleeve 41 is provided with a pair along the distribution of the diameter of axle sleeve 41
Alignment pin 4124.
Please continue to refer to Fig. 3, the alignment pin 4124 is on the outer ring of axle sleeve 41.With reference to Fig. 8, set on external support body
Have with the corresponding through hole of connecting hole 4133 and with the corresponding location hole of the alignment pin 4124, the alignment pin 4124 inserts described
It is used for advance fixedly connected hole 4133 and the relative position with corresponding through hole on external support body in location hole so that
Without adjustment connecting hole 4133 one by one and external support body during by connector fixed hub 41 and external support body
The position of upper through hole aligns.In another embodiment of the present invention, the alignment pin 4124 can also be located at the reinforcement 4223
Or on inner ring.
Preferably, the axle sleeve 41 is made with the rotating shaft 42 of highstrenghtpiston or fiber-reinforced plastic.It is described
Highstrenghtpiston and fiber-reinforced plastic are respectively provided with certain flexibility, can also strengthen the intensity of the structure of anti-avulsion sliding bearing 4, make
Obtain axle sleeve and rotating shaft hollow out can be set to a certain extent, and structural strength is not reduced when its weight is mitigated, and lifting anti-avulsion is slided
The stability and reliability of bearing 4.
As shown in fig. 7, the present invention also provides a kind of antenna 1000, including antenna cover 1, it is fixed on antenna cover two ends
Upper end installing plate 2 and lower end installing plate 3, the bearing 4 for being fixed on upper end installing plate 2, the drive module for being fixed on lower end installing plate 3
5 and the antenna-reflected plate 6 that is connected between bearing 4 and drive module 5, the bearing 4 is above-mentioned anti-avulsion sliding bearing 4,
Wherein, the axle sleeve 41 is connected with the upper end installing plate 2, and the rotating shaft 42 is connected with the antenna-reflected plate 6.
Specifically, as shown in figure 8, the upper end installing plate 2 offers location hole 21 corresponding with the alignment pin 4124
And with the corresponding through hole of set connecting hole on the cover 4,131 4133.As described above, the alignment pin 4124 inserts described fixed
In the hole 21 of position, the relative position for advance fixedly connected hole 4133 and with corresponding through hole on external support body.
The course of work of antenna of the invention is：Remote control drive module drives the rotation of antenna-reflected plate to adjust antenna
Radiation direction, because rotating shaft is fixedly connected with antenna-reflected plate, therefore, rotating shaft can be further driven to around axial-rotation.The present invention
Antenna in, as a result of above-mentioned bearing, the motion of rotating shaft is limited in the axial direction, therefore, rotating shaft without departing from axle sleeve,
The overall stability of antenna is improved, the service life of antenna is extended.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (13)
1. a kind of anti-avulsion sliding bearing, it is characterised in that the rotating shaft mutually assembled including axle sleeve and with the axle sleeve, the axle sleeve
Mounting hole including offering insertion two ends in the middle part of positive stop end and installation end and its；The rotating shaft includes being placed in the mounting hole
Auxiliary section and passed from the mounting hole and for connecting the cooperation of the extension of part to be supported, the axle sleeve and rotating shaft
Portion is designed to the axle sleeve and limits the rotating shaft to be come off from axle sleeve.
2. anti-avulsion sliding bearing according to claim 1, it is characterised in that the installation end of the axle sleeve and the cooperation of rotating shaft
Portion is corresponding, and the positive stop end of the axle sleeve is corresponding with the extension of rotating shaft；The auxiliary section of the rotating shaft is provided with limit in its periphery
Position flange, the positive stop end of the axle sleeve is in being provided with the positive stop lug boss for defining flange described in unidirectional block in the mounting hole.
3. anti-avulsion sliding bearing according to claim 2, it is characterised in that the defining flange is by the auxiliary section along footpath
Formed to extending.
4. anti-avulsion sliding bearing according to claim 3, it is characterised in that the positive stop lug boss is along the installation end to limit
The direction at position end is obliquely installed towards axle center, and the defining flange is designed to can be with limit convex when it is slided at positive stop lug boss
Platform is mutually twisted.
5. anti-avulsion sliding bearing according to claim 1, it is characterised in that the extension of the rotating shaft is provided with least one
First connecting pole, it is extended from the end surface that stretches out to auxiliary section, and is passed through for threaded connector and be connected with part to be supported.
6. anti-avulsion sliding bearing according to claim 5, it is characterised in that the auxiliary section is recessed recessed by end face
Groove, first connecting pole has the through hole connected with groove, so that threaded connector passes through through hole from the groove.
7. anti-avulsion sliding bearing according to claim 1, it is characterised in that the axle sleeve is provided with face in the positive stop end
Lid, and the resigning hole passed for the extension of the rotating shaft is offered thereon and for the axle sleeve to be installed into external support body
On connecting hole.
8. anti-avulsion sliding bearing according to claim 7, it is characterised in that the axle sleeve includes being coaxially disposed and and institute
Inner ring and the outer ring of cover connection are stated, multiple second connecting poles are distributed between Internal and external cycle, each described second connecting pole is opened
It is communicated with the through hole of the connecting hole.
9. anti-avulsion sliding bearing according to claim 8, it is characterised in that be provided between two neighboring second connecting pole
The reinforcement being connected with inner ring and outer ring.
10. anti-avulsion sliding bearing according to claim 8, it is characterised in that relative with the cover on the axle sleeve
One end is provided with a pair alignment pins being distributed along sleeve diameter.
The 11. anti-avulsion sliding bearing according to claim 1 to 10 any one, it is characterised in that the axle sleeve with it is described
Rotating shaft is made of highstrenghtpiston or fiber-reinforced plastic.
A kind of 12. antennas, including antenna cover, be fixed on upper and lower ends in antenna cover upper end installing plate and lower end install
Plate, the bearing for being fixed on upper end installing plate, the drive module for being fixed on lower end installing plate and it is connected to bearing and drive module
Between antenna-reflected plate, it is characterised in that the bearing be claim 1~11 any one described in anti-avulsion sliding axle
Hold, wherein, the axle sleeve is connected with the upper end installing plate, and the rotating shaft is connected with the antenna-reflected plate.
13. antennas according to claim 12, it is characterised in that the upper end installing plate is offered and the alignment pin pair
The location hole and through hole corresponding with set connecting hole on the cover answered.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190750.3A CN106763148B (en) | 2017-03-28 | 2017-03-28 | Antenna |
| PCT/CN2017/120177 WO2018176959A1 (en) | 2017-03-28 | 2017-12-29 | Non-loosening sliding bearing and antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190750.3A CN106763148B (en) | 2017-03-28 | 2017-03-28 | Antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763148A true CN106763148A (en) | 2017-05-31 |
| CN106763148B CN106763148B (en) | 2023-03-14 |
Family
ID=58966812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710190750.3A Active CN106763148B (en) | 2017-03-28 | 2017-03-28 | Antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106763148B (en) |
| WO (1) | WO2018176959A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107202066A (en) * | 2017-07-21 | 2017-09-26 | 如皋市非标轴承有限公司 | It is a kind of to facilitate oil injecting lubricating and easy disassembly formula bearing |
| WO2018176959A1 (en) * | 2017-03-28 | 2018-10-04 | 京信通信系统（中国）有限公司 | Non-loosening sliding bearing and antenna |
| CN109004941A (en) * | 2018-06-06 | 2018-12-14 | 合肥数理电子信息科技有限公司 | A kind of electronic information transmitting apparatus based on wireless transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111577771B (en) * | 2020-04-29 | 2023-05-23 | 国网山西省电力公司长治供电公司 | Hot-line operation isolating switch base bearing replacement device |
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Also Published As
| Publication number | Publication date |
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| WO2018176959A1 (en) | 2018-10-04 |
| CN106763148B (en) | 2023-03-14 |
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