CN109386709A - A kind of large scale and high accuracy radiation resistance lifting device - Google Patents
A kind of large scale and high accuracy radiation resistance lifting device Download PDFInfo
- Publication number
- CN109386709A CN109386709A CN201710685093.XA CN201710685093A CN109386709A CN 109386709 A CN109386709 A CN 109386709A CN 201710685093 A CN201710685093 A CN 201710685093A CN 109386709 A CN109386709 A CN 109386709A
- Authority
- CN
- China
- Prior art keywords
- extension sleeve
- level
- sleeve
- pyatyi
- extension
- 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.)
- Pending
Links
- 230000005855 radiation Effects 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000005484 gravity Effects 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims 2
- 229910021529 ammonia Inorganic materials 0.000 claims 1
- 230000003139 buffering effect Effects 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007787 solid Substances 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
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Manipulator (AREA)
Abstract
The invention belongs to lift technique fields, and in particular to a kind of large scale and high accuracy radiation resistance lifting device.Level-one extension sleeve to Pyatyi extension sleeve is sequentially sleeved in together from inside to outside, can move up and down between sleeves at different levels；The end of Pyatyi extension sleeve to second level extension sleeve is respectively provided with there are two lower stopper, and upper end is provided with upper stopper；Stay-supported encoder is mounted on Pyatyi extension sleeve upper end, and encoder switching wheel and leading block are mounted in pulley fixed plate, and pulley fixed plate is fixed on Pyatyi extension sleeve upper end；Traction device fixed plate is mounted on steel cord ends rope clamp, and steel cable clamp is mounted on steel cord ends rope clamp upper end；Steel cord ends rope clamp is mounted on wirerope tries to stop people from fighting each other, and wirerope, which is tried to stop people from fighting each other, is mounted on the top of level-one extension sleeve；Wirerope one end provides pulling force by traction mechanism, and the other end sequentially passes through steel cable clamp, wirerope is tried to stop people from fighting each other and steel cord ends rope clamp.The present invention can effectively work in small space.
Description
Technical field
The invention belongs to lift technique fields, and in particular to a kind of large scale and high accuracy radiation resistance lifting device.
Background technique
Mechanical ascending and descending equipment is a kind of very common equipment in engineering technology, and in particular surroundings occasion such as core spoke
The demand penetrated under environment is more and more.In the prior art, the lifting equipment under the nuclear environment of small space detected
Device is less, and Radiation hardness is poor.And common lifting device not can be carried out accurate regulation for the height of lifting,
This results in the general lifting device under radiation environment not competent.
Summary of the invention
Large scale and high accuracy that is simple the purpose of the present invention is to provide a kind of structure and can be applied to small space is resistance to
Lifting device is irradiated, to overcome the shortcomings of the prior art.
In order to achieve the above objectives, the technical solution used in the present invention are as follows:
A kind of large scale and high accuracy radiation resistance lifting device, level-one extension sleeve, second level extension sleeve, three-level telescopic
Cylinder, level Four extension sleeve and Pyatyi extension sleeve are sequentially sleeved in together from inside to outside, can move up and down between sleeves at different levels；Five
Grade extension sleeve, level Four extension sleeve, three-level extension sleeve and second level extension sleeve end be respectively provided with that there are two lower stoppers；Five
Grade extension sleeve, level Four extension sleeve, three-level extension sleeve and second level extension sleeve upper end be respectively arranged with Pyatyi telescopic
Cylinder upper stopper, level Four extension sleeve upper stopper, three-level extension sleeve upper stopper and second level extension sleeve upper stopper；Stay-supported coding
Device is mounted on Pyatyi extension sleeve upper end, and encoder switching wheel and leading block are mounted in pulley fixed plate, pulley fixed plate
It is fixed on Pyatyi extension sleeve upper end；Traction device fixed plate is mounted on steel cord ends rope clamp, and steel cable clamp is mounted on
Steel cord ends rope clamp upper end；Steel cord ends rope clamp is mounted on wirerope tries to stop people from fighting each other, and wirerope is tried to stop people from fighting each other, and to be mounted on level-one flexible
The top of sleeve；Wirerope one end provides pulling force by traction mechanism, and the other end sequentially passes through steel cable clamp, wirerope is drawn
Frame and steel cord ends rope clamp.
Extension sleeve slide block limiting plate, extension sleeve slide block limiting plate lower section are installed on the outside of the level-one extension sleeve
Polyurethane block is installed, sliding block is mounted in extension sleeve slide block limiting plate, and sliding block connects with guide rail, and guide rail is connected to second level
On the inside of extension sleeve；Between second level extension sleeve and three-level extension sleeve, between three-level extension sleeve and level Four extension sleeve, four
Connected by extension sleeve slide block limiting plate, polyurethane block, sliding block and guide rail between grade extension sleeve and Pyatyi extension sleeve
It connects.
Between the three-level extension sleeve and level Four extension sleeve, between level Four extension sleeve and Pyatyi extension sleeve
There are two sliding blocks for setting.
Between the level-one extension sleeve and second level extension sleeve, between second level extension sleeve and three-level extension sleeve
It is provided with a sliding block.
The end of the level-one extension sleeve is equipped with fast replacing device interface, and fast replacing device interface installs the fast changing-over of holder
Head, holder quick-release connector install holder.
Extension sleeve fixed plate is installed on the Pyatyi extension sleeve.
During decline, the gravity of level-one extension sleeve to level Four extension sleeve is attached on Pyatyi extension sleeve, level-one
The gravity of extension sleeve to three-level extension sleeve is attached on level Four extension sleeve, and so on；Level Four extension sleeve is to level-one
Extension sleeve is successively stretched out by extension sleeve slide block limiting plate, sliding block and guide rail by big end to small end；When level Four extension sleeve
First dropping to limiting length will be blocked by the lower stopper of Pyatyi extension sleeve, thus three-level extension sleeve, second level extension sleeve
Gravity decline is continued reliance on level-one extension sleeve；When extension sleeves at different levels, which drop to limiting length, to be blocked by lower stopper, gather
Urethane block plays buffer function.
In uphill process, wirerope pulls wirerope to try to stop people from fighting each other, and wirerope, which is tried to stop people from fighting each other, pulls level-one extension sleeve to go up；Work as level-one
Extension sleeve, which gos up, to be contacted to limiting length with second level extension sleeve upper stopper, so that second level extension sleeve be driven to go up；Successively
Level-one extension sleeve, second level extension sleeve, three-level extension sleeve and level Four extension sleeve are gone up to Pyatyi extension sleeve.
It is obtained by the present invention to have the beneficial effect that
(1) lifting device can remote control, it is simple and convenient, convenient for operation, it is practical, can make in particular circumstances
Operator avoids endangering.
(2) lifting device can effectively work in small space.
(3) lifting device structure is simple, function admirable, can detect falling head.
(4) lifting device is equipped with rapid replacing interface, can quick-replaceable end-of-arm tooling.
Detailed description of the invention
Fig. 1 is lifting device overall structure figure；
Fig. 2 is the top half sectional view of lifting device；
Fig. 3 is the structural profile partial enlarged view of lifting device；
Fig. 4 is the guide rail and sliding block mounting means schematic diagram of lifting device；
Fig. 5 is the polyurethane block mounting means schematic diagram of lifting device；
In figure: 1, stay-supported encoder；2, encoder switching wheel；3, leading block；4, Pyatyi extension sleeve upper stopper；5,
Level Four extension sleeve upper stopper；6, three-level extension sleeve upper stopper；7, second level extension sleeve upper stopper；8, steel cable clamp；9,
Wirerope is tried to stop people from fighting each other；10, steel cord ends rope clamp；11, Pyatyi extension sleeve；12, level Four extension sleeve；13, three-level extension sleeve；
14, second level extension sleeve；15, level-one extension sleeve；16, extension sleeve slide block limiting plate；17, polyurethane block；18, lower block
Block；19, fast replacing device interface；20, guide rail；21, sliding block；22, pulley fixed plate；23, traction device fixed plate；24, telescopic
Cylinder fixed plate；25, holder quick-release connector.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Fig. 1-5, large scale and high accuracy radiation resistance lifting device of the present invention includes stay-supported encoder 1, compiles
Code device switching wheel 2, leading block 3, Pyatyi extension sleeve upper stopper 4, level Four extension sleeve upper stopper 5, on three-level extension sleeve
Block 6, second level extension sleeve upper stopper 7, steel cable clamp 8, wirerope are tried to stop people from fighting each other 9, steel cord ends rope clamp 10, Pyatyi telescopic
Cylinder 11, level Four extension sleeve 12, three-level extension sleeve 13, second level extension sleeve 14, level-one extension sleeve 15, extension sleeve sliding block
Limit plate 16, polyurethane block 17, lower stopper 18, fast replacing device interface 19, guide rail 20, sliding block 21, pulley fixed plate 22, traction
Device fixed plate 23, extension sleeve fixed plate 24 and holder quick-release connector 25；
Level-one extension sleeve 15, second level extension sleeve 14, three-level extension sleeve 13, level Four extension sleeve 12 and Pyatyi are flexible
Sleeve 11 is sequentially sleeved in together from inside to outside, can move up and down between sleeves at different levels；Pyatyi extension sleeve 11, level Four telescopic
Cylinder 12, three-level extension sleeve 13 and second level extension sleeve 14 end be respectively provided with that there are two lower stoppers 18；Pyatyi extension sleeve 11,
The upper end of level Four extension sleeve 12, three-level extension sleeve 13 and second level extension sleeve 14 is respectively arranged on Pyatyi extension sleeve and keeps off
Block 4, level Four extension sleeve upper stopper 5, three-level extension sleeve upper stopper 6 and second level extension sleeve upper stopper 7；
Extension sleeve slide block limiting plate 16,16 lower section of extension sleeve slide block limiting plate are installed on the outside of level-one extension sleeve 15
Polyurethane block 17 is installed, sliding block 21 is mounted in extension sleeve slide block limiting plate 16, and sliding block 21 connects with guide rail 20 to be made respectively
Grade extension sleeve opposite can slide, and guide rail 20 is riveted on 14 inside of second level extension sleeve by bolt；Second level extension sleeve 14 with
Between three-level extension sleeve 13, between three-level extension sleeve 13 and level Four extension sleeve 12, level Four extension sleeve 12 stretches with Pyatyi
It is connected by extension sleeve slide block limiting plate 16, polyurethane block 17, sliding block 21 and guide rail 20 between contracting sleeve 11；Three-level is stretched
It is sliding there are two being respectively provided between contracting sleeve 13 and level Four extension sleeve 12, between level Four extension sleeve 12 and Pyatyi extension sleeve 11
Block 21；Between level-one extension sleeve 15 and second level extension sleeve 14, between second level extension sleeve 14 and three-level extension sleeve 13
It is provided with a sliding block 21；
Stay-supported encoder 1 is mounted on 11 upper end of Pyatyi extension sleeve, encoder switching wheel 2 and the fixed peace of leading block 3
In pulley fixed plate 22, pulley fixed plate 22 is fixed on 11 upper end of Pyatyi extension sleeve；Traction device fixed plate 23 to
Traction device is installed, is mounted on steel cord ends rope clamp 10 by wirerope and leading block 3, steel cable clamp 8 is mounted on
10 upper end of steel cord ends rope clamp, prevents looseness of steel wire ropes；Steel cord ends rope clamp 10 is mounted on wirerope and tries to stop people from fighting each other on 9, steel wire
Rope is tried to stop people from fighting each other 9 the tops for being mounted on level-one extension sleeve 15, and traction device passes through wirerope pulling level-one extension sleeve 15；Level-one
The end of extension sleeve 15 is equipped with fast replacing device interface 19, and fast replacing device interface 19 installs holder quick-release connector 25, and holder is fast
Changing-over head 25 installs holder；Extension sleeve fixed plate 24 is mounted on Pyatyi extension sleeve 11, can be by solid with other equipment
Dingan County's dress realizes fixed Pyatyi extension sleeve 11.
Wirerope one end provides pulling force by traction mechanism, and the other end sequentially passes through steel cable clamp 8, wirerope is tried to stop people from fighting each other 9
With steel cord ends rope clamp 10.The mode of the movement of lifting device is that straight down, and have very high straight line to extension sleeve
Degree requires, therefore realizes decline using the gravity of extension sleeve itself.
During decline, since level-one extension sleeve 15 to 12 gravity of level Four extension sleeve can be attached to Pyatyi extension sleeve
On 11, the gravity of level-one extension sleeve 15 to three-level extension sleeve 13 can be attached on level Four extension sleeve 12, and so on.Four
Grade extension sleeve 12 to level-one extension sleeve 15 by extension sleeve slide block limiting plate 16, sliding block 21, guide rail 20 by big end to small
End is successively stretched out.It will be kept off by the lower stopper 18 of Pyatyi extension sleeve 11 when level Four extension sleeve 12 first drops to limiting length
Firmly, so that three-level extension sleeve 13, second level extension sleeve 14, level-one extension sleeve 15 continue successively to decline by gravity.When each
When grade extension sleeve drops to limiting length and blocked by lower stopper 18, polyurethane block 17 plays buffer function.
In uphill process, wirerope pulls wirerope to try to stop people from fighting each other 9, and wirerope is tried to stop people from fighting each other the rise of 9 pulling level-one extension sleeves 15.When
Level-one extension sleeve 15, which gos up to limiting length, to be contacted with second level extension sleeve upper stopper 7, to drive second level extension sleeve
14 go up.Successively level-one extension sleeve 15, second level extension sleeve 14, three-level extension sleeve 13, level Four extension sleeve 12 are gone up
To Pyatyi extension sleeve 11.
Claims (8)
1. a kind of large scale and high accuracy radiation resistance lifting device, it is characterised in that: level-one extension sleeve (15), second level extension sleeve
(14), three-level extension sleeve (13), level Four extension sleeve (12) and Pyatyi extension sleeve (11) are sequentially sleeved in together from inside to outside,
It can move up and down between sleeves at different levels；Pyatyi extension sleeve (11), level Four extension sleeve (12), three-level extension sleeve (13) and
The end of second level extension sleeve (14) is respectively provided with there are two lower stopper (18)；Pyatyi extension sleeve (11), level Four extension sleeve
(12), the upper end of three-level extension sleeve (13) and second level extension sleeve (14) be respectively arranged with Pyatyi extension sleeve upper stopper (4),
Level Four extension sleeve upper stopper (5), three-level extension sleeve upper stopper (6) and second level extension sleeve upper stopper (7)；Stay-supported coding
Device (1) is mounted on Pyatyi extension sleeve (11) upper end, and encoder switching wheel (2) and leading block (3) are mounted on pulley fixed plate
(22) on, pulley fixed plate (22) is fixed on Pyatyi extension sleeve (11) upper end；Traction device fixed plate (23) is mounted on steel wire
It restricts on end rope clamp (10), steel cable clamp (8) is mounted on steel cord ends rope clamp (10) upper end；Steel cord ends rope clamp (10)
Wirerope is mounted on to try to stop people from fighting each other on (9), wirerope try to stop people from fighting each other (9) be mounted on the tops of level-one extension sleeve (15)；Wirerope one end
Pulling force, the other end sequentially passes through steel cable clamp (8), wirerope is tried to stop people from fighting each other (9) and steel cord ends rope are provided by traction mechanism
It presss from both sides (10).
2. large scale and high accuracy radiation resistance lifting device according to claim 1, it is characterised in that: the level-one is flexible
It is equipped with extension sleeve slide block limiting plate (16) on the outside of sleeve (15), poly- ammonia is installed below extension sleeve slide block limiting plate (16)
Ester block (17), sliding block (21) are mounted on extension sleeve slide block limiting plate (16), and sliding block (21) connects with guide rail (20), guide rail
(20) it is connected on the inside of second level extension sleeve (14)；Between second level extension sleeve (14) and three-level extension sleeve (13), three-level stretches
Pass through between contracting sleeve (13) and level Four extension sleeve (12), between level Four extension sleeve (12) and Pyatyi extension sleeve (11)
Extension sleeve slide block limiting plate (16), polyurethane block (17), sliding block (21) and guide rail (20) connection.
3. large scale and high accuracy radiation resistance lifting device according to claim 2, it is characterised in that: the three-level is flexible
It is provided between sleeve (13) and level Four extension sleeve (12), between level Four extension sleeve (12) and Pyatyi extension sleeve (11)
Two sliding blocks (21).
4. large scale and high accuracy radiation resistance lifting device according to claim 2, it is characterised in that: the level-one is flexible
It is provided between sleeve (15) and second level extension sleeve (14), between second level extension sleeve (14) and three-level extension sleeve (13)
One sliding block (21).
5. large scale and high accuracy radiation resistance lifting device according to claim 1, it is characterised in that: the level-one is flexible
The end of sleeve (15) is equipped with fast replacing device interface (19), and fast replacing device interface (19) installs holder quick-release connector (25), cloud
Platform quick-release connector (25) installs holder.
6. large scale and high accuracy radiation resistance lifting device according to claim 1, it is characterised in that: the Pyatyi is flexible
Extension sleeve fixed plate (24) are installed on sleeve (11).
7. large scale and high accuracy radiation resistance lifting device according to claim 2, it is characterised in that: during decline, one
The gravity of grade extension sleeve (15) to level Four extension sleeve (12) is attached on Pyatyi extension sleeve (11), level-one extension sleeve
(15) it is attached on level Four extension sleeve (12) to the gravity of three-level extension sleeve (13), and so on；Level Four extension sleeve
(12) to level-one extension sleeve (15) by extension sleeve slide block limiting plate (16), sliding block (21) and guide rail (20) by big end to small
End is successively stretched out；When level Four extension sleeve (12) first drops to limiting length will be by the lower stopper of Pyatyi extension sleeve (11)
(18) it blocks, so that three-level extension sleeve (13), second level extension sleeve (14) and level-one extension sleeve (15) continue reliance on gravity
Decline；When extension sleeves at different levels, which drop to limiting length, to be blocked by lower stopper (18), polyurethane block (17) plays buffering and makees
With.
8. large scale and high accuracy radiation resistance lifting device according to claim 2, it is characterised in that: in uphill process, steel
Cord pull wirerope try to stop people from fighting each other (9), wirerope try to stop people from fighting each other (9) pull level-one extension sleeve (15) go up；When level-one extension sleeve
(15) go up to contact to limiting length with second level extension sleeve upper stopper (7), so that second level extension sleeve (14) be driven to go up；According to
It is secondary that level-one extension sleeve (15), second level extension sleeve (14), three-level extension sleeve (13) and level Four extension sleeve (12) go up
To Pyatyi extension sleeve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710685093.XA CN109386709A (en) | 2017-08-11 | 2017-08-11 | A kind of large scale and high accuracy radiation resistance lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710685093.XA CN109386709A (en) | 2017-08-11 | 2017-08-11 | A kind of large scale and high accuracy radiation resistance lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109386709A true CN109386709A (en) | 2019-02-26 |
Family
ID=65414622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710685093.XA Pending CN109386709A (en) | 2017-08-11 | 2017-08-11 | A kind of large scale and high accuracy radiation resistance lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704743A (en) * | 2022-04-22 | 2022-07-05 | 西安博展电力技术有限公司 | Telescopic device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0848973A1 (en) * | 1996-12-19 | 1998-06-24 | HUSS MASCHINENFABRIK GMBH & CO. KG | Mobile business device with gondola conveyable to changeable heights |
| CN2431702Y (en) * | 1999-07-09 | 2001-05-23 | 隋萨色康脱拉塔斯国际股份有限公司 | Length adjustable device for X-ray equipment space position |
| CN202704862U (en) * | 2012-07-06 | 2013-01-30 | 太原高科锐志物流仓储设备有限公司 | Bridge type stacking crane |
| CN106051098A (en) * | 2016-07-30 | 2016-10-26 | 北京工业大学 | Telescopic retractable device |
-
2017
- 2017-08-11 CN CN201710685093.XA patent/CN109386709A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0848973A1 (en) * | 1996-12-19 | 1998-06-24 | HUSS MASCHINENFABRIK GMBH & CO. KG | Mobile business device with gondola conveyable to changeable heights |
| CN2431702Y (en) * | 1999-07-09 | 2001-05-23 | 隋萨色康脱拉塔斯国际股份有限公司 | Length adjustable device for X-ray equipment space position |
| CN202704862U (en) * | 2012-07-06 | 2013-01-30 | 太原高科锐志物流仓储设备有限公司 | Bridge type stacking crane |
| CN106051098A (en) * | 2016-07-30 | 2016-10-26 | 北京工业大学 | Telescopic retractable device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704743A (en) * | 2022-04-22 | 2022-07-05 | 西安博展电力技术有限公司 | Telescopic device |
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| PB01 | Publication | ||
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Application publication date: 20190226 |