CN106964834A - A kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust - Google Patents
A kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust Download PDFInfo
- Publication number
- CN106964834A CN106964834A CN201710348418.5A CN201710348418A CN106964834A CN 106964834 A CN106964834 A CN 106964834A CN 201710348418 A CN201710348418 A CN 201710348418A CN 106964834 A CN106964834 A CN 106964834A
- Authority
- CN
- China
- Prior art keywords
- bridge
- steel tubes
- cutter device
- housing
- bridge construction
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D21/00—Machines or devices for shearing or cutting tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D33/00—Accessories for shearing machines or shearing devices
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Abstract
The present invention provides a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust, and is related to bridge field.This is easy to the bridge construction Steel Tubes For Bridge Application cutter device of regulation, including base, the both sides of the base top are installed with montant, and two one end of montant away from base are fixedly connected by the body of rod, the bottom of the body of rod and housing is installed between two montants, the surface of the body of rod is arranged with sleeve pipe, the surface of the body of rod and interspersed is provided with fixed plate positioned at the right side of sleeve pipe.This is easy to the bridge construction Steel Tubes For Bridge Application cutter device of regulation, pass through the setting to sleeve pipe, inserted link, motor, gear, slide plate, sliding block, rack and back-moving spring, reach that convenience bridge construction is fixed with Steel Tubes For Bridge Application cutter device the effect of installation, so as to facilitate the use of user, the operating efficiency of bridge construction Steel Tubes For Bridge Application cutter device is also improved with this.
Description
Technical field
The present invention relates to bridge technology field, specially a kind of bridge construction for being easy to regulation cuts dress with Steel Tubes For Bridge Application
Put.
Background technology
Bridge, refers to and is erected in rivers,lakes and seas, the building for making traffic etc. smoothly to pass through, referred to as bridge, bridge one
As be made up of superstructure, substructure, bearing and attached structure, superstructure is also known as bridge span structure, is across obstacle
Primary structure, substructure includes abutment, bridge pier and basis, and bearing is that the supporting place of bridge span structure and bridge pier or abutment is set
Load transfer device, attached structure then refers to transition slab at bridge head, truncated cone banking, shore protection, training works etc., and bridge is actually just only divided into
Three major types, beam bridge, arch bridge and suspension bridge, stayed-cable bridge, it is very big that beam bridge typically build span in, the shallower place in waters, by bridge post and bridge plate
Composition, weight of object is transmitted to bridge post from bridge plate, and arch bridge is typically built on the less waters of span, and the body of a bridge overarches, typically all
Have several bridge openings, play the weight in the middle of the function of flood discharge, bridge and be transmitted to bridge two ends, and two ends are then transmitted to centre, hanging bridge be as
A kind of modern most practical bridge, bridge can build that span is big, the place of the depth of water in, be made up of bridge post, cable and bridge floor, the hanging bridge of early stage
Just it be able to will not be broken, present suspension bridge can substantially steadfastly stand on one's ground in storm through living to expose to wind and rain.
When being related to bridge, relate to use bridge construction with Steel Tubes For Bridge Application cutter device, but city at present
Bridge construction on field Steel Tubes For Bridge Application cutter device, during use, is not easy to cut bridge construction with Steel Tubes For Bridge Application
Cut device and installation is fixed, use, also reduced with this so as to have impact on the normal of bridge construction Steel Tubes For Bridge Application cutter device
The operating efficiency of bridge construction Steel Tubes For Bridge Application cutter device.
The content of the invention
（One）The technical problem of solution
In view of the shortcomings of the prior art, the invention provides a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust,
Solve the problem of bridge construction is not easy to regulation with Steel Tubes For Bridge Application cutter device.
（Two）Technical scheme
To realize object above, the present invention is achieved by the following technical programs：A kind of bridge construction bridge for being easy to adjust
Beam steel pipe cutting device, including base, the both sides of the base top are installed with montant, and two montants are away from base
One end be fixedly connected by the body of rod, the bottom of the body of rod and be installed with housing, the bar between two montants
The surface of body is arranged with sleeve pipe, the surface of the body of rod and positioned at sleeve pipe right side it is interspersed be provided with fixed plate, the body of rod
Surface and positioned at being surrounded with spring between fixed plate and sleeve pipe, the bottom of described sleeve pipe is installed with expansion link, described
The bottom of expansion link is installed with cutting machine, and the right side of the housing is interspersed to be provided with inserted link, and the inserted link is close to housing
One end runs through the side of housing and extends to the inside of housing, and the inserted link is located at one end of hull outside and the side of expansion link
It is fixedly connected.
Motor is installed with the top of the housing cavity, the output shaft of the motor is installed with gear, described
The inside of housing and slide plate is provided with the right side of the motor, the top and bottom of the slide plate are installed with sliding block, institute
The right side for stating slide plate is fixedly connected with one end that inserted link is located at enclosure interior, and rack, institute are installed with the left of the slide plate
Rack and pinion intermeshing is stated, the one end of the rack away from slide plate is installed with back-moving spring, and the back-moving spring is remote
From slide plate one end with being fixedly connected on the left of housing cavity, the surface of the inserted link and positioned at housing internal sleeve provided with pipe
Body, the right side of the body on the right side of housing cavity with being fixedly connected, the controller electricity of the motor and cutting machine with peripheral hardware
Property connection.
It is preferred that, the top of the base and antiskid plate is installed between two montants, the antiskid plate
Surface offers anti-slip veins.
It is preferred that, the bottom of the base is installed with fixed block, and the bottom of the fixed block is connected by rotating shaft activity
It is connected to roller.
It is preferred that, the quantity of the fixed block is four, and four fixed blocks are distributed in the corner of base bottom.
It is preferred that, side of the sliding block away from slide plate is contacted with the inwall of housing.
It is preferred that, the body is equipped with inserted link.
（Three）Beneficial effect
The invention provides a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust.Possesses following beneficial effect：
1st, this be easy to regulation bridge construction Steel Tubes For Bridge Application cutter device, by sleeve pipe, inserted link, motor, gear, slide plate,
The setting of sliding block, rack and back-moving spring, has reached that installation is fixed with Steel Tubes For Bridge Application cutter device to bridge construction in convenience
Effect, so as to facilitate the use of user, imitated with the work that this also improves bridge construction Steel Tubes For Bridge Application cutter device
Rate.
2nd, the bridge construction Steel Tubes For Bridge Application cutter device for being easy to regulation, by the setting to fixed block and roller, reaches
The effect that convenience is moved to bridge construction with Steel Tubes For Bridge Application cutter device has been arrived, so that the use of user is facilitated, with
This also improves the operating efficiency of bridge construction Steel Tubes For Bridge Application cutter device.
3rd, the bridge construction Steel Tubes For Bridge Application cutter device for being easy to regulation, by the setting to spring, has reached to set
Pipe carries out the effect of buffer limit, so as to facilitate the use of user, also improve bridge construction with this is cut with Steel Tubes For Bridge Application
Cut the operating efficiency of device.
4th, the bridge construction Steel Tubes For Bridge Application cutter device for being easy to regulation, by the setting to antiskid plate, has reached side
Just the effect used with Steel Tubes For Bridge Application cutter device bridge construction, so as to prevent steel pipe from beating occurring during cutting
Sliding phenomenon.
5th, the bridge construction Steel Tubes For Bridge Application cutter device for being easy to regulation, by the setting to body, has reached to inserting
Bar carries out spacing effect, so as to facilitate the use of user, bridge construction Steel Tubes For Bridge Application cutting dress is also improved with this
The operating efficiency put, so as to be also convenient for the use of user.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the internal structure schematic diagram of inventive shell.
In figure：1 base, 2 montants, 3 bodies of rod, 4 housings, 5 sleeve pipes, 6 fixed plates, 7 springs, 8 expansion links, 9 cutting machines, 10 are inserted
Bar, 11 motors, 12 gears, 13 slide plates, 14 sliding blocks, 15 racks, 16 back-moving springs, 17 bodys, 18 antiskid plates, 19 fixed blocks, 20
Roller.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust, as shown in Figure 1-2,
Including base（1）, base（1）Top and positioned at two montants（2）Between be installed with antiskid plate（18）, antiskid plate（18）
Surface offer anti-slip veins, base（1）Bottom be installed with fixed block（19）, fixed block（19）Bottom pass through rotating shaft
It is connected with roller（20）, fixed block（19）Quantity be four, and four fixed blocks（19）It is distributed in base（1）Bottom
Corner, base（1）The both sides at top are installed with montant（2）, and two montants（2）Away from base（1）One end pass through
The body of rod（3）It is fixedly connected, the body of rod（3）Bottom and positioned at two montants（2）Between be installed with housing（4）, the body of rod（3）'s
Surface is arranged with sleeve pipe（5）, the body of rod（3）Surface and positioned at sleeve pipe（5）Right side interspersed be provided with fixed plate（6）, the body of rod（3）
Surface and positioned at fixed plate（6）And sleeve pipe（5）Between be surrounded with spring（7）, sleeve pipe（5）Bottom be installed with and stretch
Contracting bar（8）, expansion link（8）Bottom be installed with cutting machine（9）, housing（4）Right side interspersed be provided with inserted link（10）, insert
Bar（10）Close to housing（4）One end run through housing（4）Side and extend to housing（4）Inside, inserted link（10）Positioned at shell
Body（4）Outside one end and expansion link（8）Side be fixedly connected.
Housing（4）Motor is installed with the top of inner chamber（11）, motor（11）Output shaft be installed with gear
（12）, housing（4）Inside and positioned at motor（11）Right side be provided with slide plate（13）, slide plate（13）Top and bottom it is solid
Dingan County is equipped with sliding block（14）, sliding block（14）Away from slide plate（13）Side and housing（4）Inwall contact, slide plate（13）Right side
With inserted link（10）Positioned at housing（4）Internal one end is fixedly connected, slide plate（13）Left side be installed with rack（15）, rack
（15）With gear（12）Intermeshing, rack（15）Away from slide plate（13）One end be installed with back-moving spring（16）, reset
Spring（16）Away from slide plate（13）One end and housing（4）It is fixedly connected on the left of inner chamber, inserted link（10）Surface and positioned at shell
Body（4）Internal sleeve be provided with body（17）, body（17）With inserted link（10）It is equipped with, body（17）Right side and housing（4）
It is fixedly connected on the right side of inner chamber, motor（11）And cutting machine（9）Controller with peripheral hardware is electrically connected with, the type of peripheral control unit
Number be MAM-300.
Operation principle：In use, operate the controller of peripheral hardware, controlled motor（11）And cutting machine（9）Work, motor
（11）Band moving gear（12）Rotate, so that with carry-over bar（15）On slide plate（14）It is mobile, with this convenient regulation, cutting machine（9）
Work is operated.
In summary, bridge construction Steel Tubes For Bridge Application cutter device for being easy to regulation, by sleeve pipe（5）, inserted link
（10）, motor（11）, gear（12）, slide plate（13）, sliding block（14）, rack（15）And back-moving spring（16）Setting, reach
It is convenient bridge construction to be fixed with Steel Tubes For Bridge Application cutter device the effect of installation, so that the use of user is facilitated, with
This also improves the operating efficiency of bridge construction Steel Tubes For Bridge Application cutter device.
Also, by fixed block（19）And roller（20）Setting, reached convenience to bridge construction Steel Tubes For Bridge Application
The effect that cutter device is moved, so as to facilitate the use of user, bridge construction Steel Tubes For Bridge Application is also improved with this
The operating efficiency of cutter device.
Also, by spring（7）Setting, reached to sleeve pipe（5）The effect of buffer limit is carried out, so as to facilitate
The use of user, the operating efficiency of bridge construction Steel Tubes For Bridge Application cutter device is also improved with this.
Also, by antiskid plate（18）Setting, reached that convenience is entered to bridge construction Steel Tubes For Bridge Application cutter device
The effect of enforcement, so that the phenomenon for preventing steel pipe from being skidded during cutting.
Also, by body（17）Setting, reached to inserted link（10）Spacing effect is carried out, so that facilitating makes
The use of user, the operating efficiency of bridge construction Steel Tubes For Bridge Application cutter device is also improved with this, so as to be also convenient for using
The use of person.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, by sentence " including one ... the key element limited, it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust, including base（1）, it is characterised in that：The bottom
Seat（1）The both sides at top are installed with montant（2）, and two montants（2）Away from base（1）One end pass through the body of rod（3）
It is fixedly connected, the body of rod（3）Bottom and positioned at two montants（2）Between be installed with housing（4）, the body of rod（3）
Surface be arranged with sleeve pipe（5）, the body of rod（3）Surface and positioned at sleeve pipe（5）Right side interspersed be provided with fixed plate（6）,
The body of rod（3）Surface and positioned at fixed plate（6）And sleeve pipe（5）Between be surrounded with spring（7）, described sleeve pipe（5）'s
Bottom is installed with expansion link（8）, the expansion link（8）Bottom be installed with cutting machine（9）, the housing（4）'s
Right side is interspersed to be provided with inserted link（10）, the inserted link（10）Close to housing（4）One end run through housing（4）Side and extend to
Housing（4）Inside, the inserted link（10）Positioned at housing（4）Outside one end and expansion link（8）Side be fixedly connected；It is described
Housing（4）Motor is installed with the top of inner chamber（11）, the motor（11）Output shaft be installed with gear（12）, institute
State housing（4）Inside and positioned at motor（11）Right side be provided with slide plate（13）, the slide plate（13）Top and bottom it is equal
It is installed with sliding block（14）, the slide plate（13）Right side and inserted link（10）Positioned at housing（4）Internal one end is fixedly connected,
The slide plate（13）Left side be installed with rack（15）, the rack（15）With gear（12）Intermeshing, the rack
（15）Away from slide plate（13）One end be installed with back-moving spring（16）, the back-moving spring（16）Away from slide plate（13）One
End and housing（4）It is fixedly connected on the left of inner chamber, the inserted link（10）Surface and positioned at housing（4）Internal sleeve be provided with body
（17）, the body（17）Right side and housing（4）It is fixedly connected on the right side of inner chamber, the motor（11）And cutting machine（9）
It is electrically connected with the controller of peripheral hardware.
2. a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust according to claim 1, it is characterised in that：
The base（1）Top and positioned at two montants（2）Between be installed with antiskid plate（18）, the antiskid plate（18）Table
Face offers anti-slip veins.
3. a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust according to claim 1, it is characterised in that：
The base（1）Bottom be installed with fixed block（19）, the fixed block（19）Bottom be connected with by rotating shaft
Roller（20）.
4. a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust according to claim 3, it is characterised in that：
The fixed block（19）Quantity be（Four）, and four fixed blocks（19）It is distributed in base（1）Bottom（Corner）.
5. a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust according to claim 1-4, its feature exists
In：The sliding block（14）Away from slide plate（13）Side and housing（4）Inwall contact.
6. a kind of bridge construction Steel Tubes For Bridge Application cutter device for being easy to adjust according to claim 1-5, its feature exists
In：The body（17）With inserted link（10）It is equipped with.
7. a kind of bridge construction Steel Tubes For Bridge Application cutting method for being easy to adjust, it is characterised in that：In use, operation peripheral hardware
Controller, controlled motor（11）And cutting machine（9）Work, motor（11）Band moving gear（12）Rotate, so that with carry-over bar（15）
On slide plate（14）It is mobile, with this convenient regulation, cutting machine（9）Work is operated；By to sleeve pipe（5）, inserted link（10）, electricity
Machine（11）, gear（12）, slide plate（13）, sliding block（14）, rack（15）And back-moving spring（16）Setting, reached convenience to bridge
The effect of installation is fixed with Steel Tubes For Bridge Application cutter device for beam construction；By to fixed block（19）And roller（20）Setting,
The effect that convenience is moved to bridge construction with Steel Tubes For Bridge Application cutter device is reached；By to spring（7）Setting, reach
To sleeve pipe（5）Carry out the effect of buffer limit；By to antiskid plate（18）Setting, reached convenience to bridge construction bridge
The effect that beam steel pipe cutting device is used, so that the phenomenon for preventing steel pipe from being skidded during cutting；By right
Body（17）Setting, reached to inserted link（10）Spacing effect is carried out, so as to facilitate the use of user, is also carried with this
High operating efficiency of the bridge construction with Steel Tubes For Bridge Application cutter device, so as to be also convenient for the use of user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348418.5A CN106964834B (en) | 2017-05-17 | 2017-05-17 | A kind of Steel Tubes For Bridge Application cutter device of the bridge construction convenient for adjusting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710348418.5A CN106964834B (en) | 2017-05-17 | 2017-05-17 | A kind of Steel Tubes For Bridge Application cutter device of the bridge construction convenient for adjusting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106964834A true CN106964834A (en) | 2017-07-21 |
| CN106964834B CN106964834B (en) | 2019-04-05 |
Family
ID=59325901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710348418.5A Expired - Fee Related CN106964834B (en) | 2017-05-17 | 2017-05-17 | A kind of Steel Tubes For Bridge Application cutter device of the bridge construction convenient for adjusting |
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| Country | Link |
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| CN (1) | CN106964834B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237273A (en) * | 2017-08-16 | 2017-10-10 | 王赛飞 | A kind of novel bridge construction equipment |
| CN107288042A (en) * | 2017-08-16 | 2017-10-24 | 王赛飞 | A kind of equipment for bridge construction |
| CN107745404A (en) * | 2017-10-16 | 2018-03-02 | 扬中市盛新氟塑制品有限公司 | A kind of fixing device for teflon rod cutting |
| CN107775707A (en) * | 2017-10-16 | 2018-03-09 | 扬中市盛新氟塑制品有限公司 | A kind of chip cleaning plant for polyfluortetraethylene pipe cutting |
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| JPH10131185A (en) * | 1996-10-25 | 1998-05-19 | Taisei Corp | Method and equipment for cutting steel-pipe pile |
| KR20100099495A (en) * | 2009-03-03 | 2010-09-13 | (주)에스앤씨산업 | Central connecting apparatus engaged with lattice type steel pipe pile and construction method of assembling slab bridge using the same |
| CN204248076U (en) * | 2014-12-10 | 2015-04-08 | 嘉兴市靓雅皮具有限公司 | Steel pipe horizontal cutting device |
| CN204621212U (en) * | 2015-03-10 | 2015-09-09 | 天津杰锋钢管工贸有限公司 | A kind of steel tube cutting machine |
| CN204818237U (en) * | 2015-07-29 | 2015-12-02 | 北京亿德佳热电工程设备有限公司 | Diversified accurate steel pipe cutting device |
| CN205614796U (en) * | 2016-03-31 | 2016-10-05 | 中建七局安装工程有限公司 | A support frame for circular saw safety cover |
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2017
- 2017-05-17 CN CN201710348418.5A patent/CN106964834B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10131185A (en) * | 1996-10-25 | 1998-05-19 | Taisei Corp | Method and equipment for cutting steel-pipe pile |
| KR20100099495A (en) * | 2009-03-03 | 2010-09-13 | (주)에스앤씨산업 | Central connecting apparatus engaged with lattice type steel pipe pile and construction method of assembling slab bridge using the same |
| CN204248076U (en) * | 2014-12-10 | 2015-04-08 | 嘉兴市靓雅皮具有限公司 | Steel pipe horizontal cutting device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237273A (en) * | 2017-08-16 | 2017-10-10 | 王赛飞 | A kind of novel bridge construction equipment |
| CN107288042A (en) * | 2017-08-16 | 2017-10-24 | 王赛飞 | A kind of equipment for bridge construction |
| CN107745404A (en) * | 2017-10-16 | 2018-03-02 | 扬中市盛新氟塑制品有限公司 | A kind of fixing device for teflon rod cutting |
| CN107775707A (en) * | 2017-10-16 | 2018-03-09 | 扬中市盛新氟塑制品有限公司 | A kind of chip cleaning plant for polyfluortetraethylene pipe cutting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106964834B (en) | 2019-04-05 |
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Inventor after: Li Yajuan Inventor after: Lu Xinjian Inventor after: Deng Zina Inventor after: Cao Zhenglei Inventor after: Wang Hongjie Inventor after: Xu Shuguan Inventor after: Guo Yufei Inventor after: Di Wenwu Inventor after: Wang Qi Inventor after: Guo Zhijian Inventor after: Dan Shirui Inventor after: Li Yan Inventor after: Li Ming Inventor after: Wu Kuan Inventor after: Xu Hongliang Inventor after: Tan Zujun Inventor after: An Wenchao Inventor after: Gao Yuling Inventor after: Wu Chaoming Inventor after: Geng Jinke Inventor before: Dan Shirui Inventor before: Li Ming |
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