CN108639933A - A kind of turnover bracket and the hanging method of the main driving of shield - Google Patents
A kind of turnover bracket and the hanging method of the main driving of shield Download PDFInfo
- Publication number
- CN108639933A CN108639933A CN201810395530.9A CN201810395530A CN108639933A CN 108639933 A CN108639933 A CN 108639933A CN 201810395530 A CN201810395530 A CN 201810395530A CN 108639933 A CN108639933 A CN 108639933A
- Authority
- CN
- China
- Prior art keywords
- shield
- main driving
- face
- turnover bracket
- connecting plate
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
Abstract
The present invention relates to tunnel shield machine tunneling construction fields; disclose a kind of turnover bracket and the hanging method of the main driving of shield; turnover bracket includes the lifting and supporting rack for being connected to the main driving opposite sides of shield; mast-up is mainly used for connecting the suspension hook of loop wheel machine; support frame as described above is mainly used for the auxiliary overturning of lifting process; colliding with when lifting is prevented, and turnover bracket can protect the main driving of shield in the entire hoisting process that lifts and go into the well；The main driving of shield can be easily lifted by crane using the hanging method of the main driving of shield in the present invention, only a loop wheel machine is needed just to realize overturning and entire hoisting process, saves lifting space.
Description
Technical field
The present invention relates to tunnel shield machine tunneling construction field, more particularly to a kind of turnover bracket and the main driving of shield
Hanging method.
Background technology
Shield method as more common engineering method in current tunnel construction, be generally used for urban track traffic, vcehicular tunnel,
The construction of pipe gallery.In recent years, China greatly develops infrastructure construction, has been the most huge state of shield machine ownership
Family, shield machine diameter is generally based on 6m, 8m, 10m or more, master of the 6 rice diameter shield machines as Construction of Urban Rail Traffic
Power army, accounting are maximum；And highway in China tunnel construction is also gradually increased the dynamics of shield method in recent years, makes 10 meters or more of ultra-large type
Shield machine has wide application platform.
Shield machine is the Large Complex Equipment of the multisystems compositions such as current collection, air-liquid pressure, and component number is various.Shield
Machine needs to disassemble again after producing is transported to construction site, and parts lift again is assembled into complete machine into launching shaft, warp
After debugging, driving can be originated.The parts that the main driving of shield is most accurate as shield machine, finally wants, hoisting process is not
Have mistake, collide with there is a situation where any, may all cause the main driving internal structure of shield impaired, shield machine driving is made to bring not
The disaster that can be estimated.Super-large-diameter shield machine is smaller in China's application case, how safe and smooth by shield when assembling is gone into the well
Main driving hangs in starting well safely, and is assembled into complete machine, is the major issue for needing to solve at present.
When shield machine lifting is gone into the well, shield machine is generally split as knife, anterior shield, middle shield, shield tail, rear mating trolley (part
Super-large-diameter shield has no point anterior shield and middle shield, with main shield body replacement), it hangs in starting well respectively, then re-assembly debugging.Often
The main driving of rule 6m shields, without detaching, can be hung in starting well, shield body itself plays the protection main drive of shield together with anterior shield shield body
Dynamic effect；But super-large-diameter shield can not once lift the parts such as main shield body, shield tail due to its huge volume, need by
It continues to be split as multiple portions to lift respectively.The diameter of the main driving of super-large-diameter shield is up to 7.6m and weight up to 450 tons, much
More than the scale of the main driving of 6m diameter shields, the hanging device and lifting mode needed for lifting are also different greatly.
Currently, two large-scale lifting appliance (No. 1 loop wheel machine and No. 2 are usually used in the lifting of the main driving of super-large-diameter shield
Loop wheel machine, No. 1 loop wheel machine can individually lift by crane the main driving of shield, No. 2 loop wheel machine auxiliary), it is whole respectively in the main driving both sides connecting shackle of shield
A shield is main to drive the lifting that lies low, and is lifted to after meeting turning height, and No. 1 loop wheel machine up lifts by crane the main driving one end of shield, with
Reach the action of the main driving overturning of shield, subsequent No. 2 loop wheel machines avulse, 1 loop wheel machine by shield is main drive toward starting well under hang, under be hung to
After proper height, the connection of shield main driving and shield body is completed.This hanging method is primarily present following defect：
1, more demanding to the crane capacity of lifting appliance；
2, two ultra-large type lifting appliances are needed, sufficiently large field hoisting platform product is needed；
3, to the more demanding of the operator of lifting appliance, operator needs experience abundant enough and cooperates and grasps
Make；
Shield main driving unprotect when being hung under 4, lifting stability is insufficient.
Invention content
The purpose of the present invention is can overcome the deficiencies of the prior art and provide one kind the main driving of shield can be assisted in hoisting process
The turnover bracket of middle overturning and a kind of hanging method of the main driving of shield, especially for the main drive of shield of super-large-diameter shield machine
It is dynamic.
To achieve the goals above, the present invention provides a kind of turnover bracket, is turned over for auxiliary when lifting the main driving of shield
Turn, which is characterized in that including mast-up and supporting rack, the mast-up and support frame as described above are respectively arranged in the main drive of the shield
Dynamic opposite both sides,
The mast-up includes the first end face connecting plate being mutually connected vertically and first side connecting plate, the first end
The first end face mounting portion for being connect with the end face of the main driving of the shield is provided on the connecting plate of face, the first side connects
The first side mounting portion for being connect with the side of the main driving of the shield is provided on fishplate bar, and the first side connects
It is additionally provided with lifting lug on plate, support frame as described above includes the second end face connecting plate being mutually connected vertically and second side connecting plate,
The second end face mounting portion for being connect with the end face of the main driving of the shield is provided on the second end face connecting plate, it is described
The second side mounting portion for being connect with the side of the main driving of the shield is provided on second side connecting plate.
Preferably, the profile of lateral surface of the second side connecting plate far from the second end face connecting plate is set
It is set to arc.
Preferably, the first end face mounting portion and the second end face mounting portion are described in inner surface fitting
The supporting steel plate of the end face of the main driving of shield is offered for being connect with the end face of the main driving of the shield on the supporting steel plate
Mounting hole.
Preferably, the first side mounting portion and the second side mounting portion are described in inner surface fitting
The support steel plate of the side of the main driving of shield, the support steel plate are equipped with for connecting with the side of the main driving of the shield
Trip.
Preferably, the first end face mounting portion, first side mounting portion and the junction of the mast-up are equal
It is provided with deep floor, the junction of the second end face mounting portion, second side mounting portion and support frame as described above is also equipped with
Deep floor.
Preferably, the turnover bracket includes two intervals and the parallel arrangement of mast-up, described in two
It is connected by crossbeam between mast-up.
Preferably, the turnover bracket includes two intervals and parallel arrangement of support frame as described above, described in two
It is connected by crossbeam between supporting rack.
Same purpose, the present invention also provides a kind of hanging method of the main driving of shield, the specific steps are：By above-mentioned
Turnover bracket described in one is connected in the main driving of the shield, and the mast-up and support frame as described above are connected to described
The opposite both sides of the main driving of shield, the first end face connecting plate and first end face connecting plate are installed on the same of the main driving of shield
The suspension hook of loop wheel machine is connected on the lifting lug of the mast-up by end face, and during loop wheel machine lifting, the main driving of shield is by lying low
Lifting, the main one end for being drivingly connected the mast-up of the shield is up lifted by crane, at this point, bottom of the supporting rack to the main driving of shield
It shields, as sling height gradually rises, the main driving state in a vertical shape of shield is sling completely.
The present invention provides a kind of turnover bracket and the hanging method of the main driving of shield, and turnover bracket includes mast-up and support
Frame is respectively used to connect with loop wheel machine, lifts protection of the switching process to the main driving of shield, and is all connected to the main driving of shield
End face and lateral surface, using the turnover bracket, can not only be realized light when the main driving of shield is lifted by crane in hoisting process
Overturning, and the main driving of shield can be protected during going into the well lifting；In addition, need to only be adopted using the turnover bracket
The main driving of the shield just can be lifted by crane and be lifted with a loop wheel machine, saves lifting space.
Description of the drawings
Fig. 1 is the mounting structure schematic diagram that a kind of turnover bracket is applied to the main driving of shield in the embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram of the mast-up of turnover bracket in the embodiment of the present invention；
Fig. 3 is the schematic diagram in A-A direction of Fig. 2；
Fig. 4 is a kind of structural schematic diagram of the supporting rack of turnover bracket in the embodiment of the present invention；
Fig. 5 is the B-B direction schematic diagram of Fig. 4.
In figure, 10, the main driving of shield；20, turnover bracket；21, mast-up；211, first end face connecting plate；211a, first
End face mounting portion；212, first side connecting plate；212a, first side mounting portion；212b, lifting lug；22, turnover bracket；221、
Second end face connecting plate；221a, second end face mounting portion；222, second side connecting plate；222a, second side mounting portion；31、
Mounting hole；41, trip；50, deep floor；60, crossbeam.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
In the description of the present invention, it is to be understood that, it is described using term " first ", " second " etc. in the present invention each
Kind information, but these information should not necessarily be limited by these terms, and these terms are only used for same type of information being distinguished from each other out.Example
Such as, without departing from the present invention, " first " information can also be referred to as " second " information, similar, " second "
Information can also be referred to as " first " information.
As shown in Figs. 1-3, a kind of turnover bracket 20 of the preferred embodiment of the present invention, for lift shield it is main driving 10 when
Auxiliary overturning comprising mast-up 21 and supporting rack 22, the mast-up 21 and support frame as described above 22 are respectively arranged in the shield
10 opposite both sides of the main driving of structure, the mast-up 21 include the first end face connecting plate 211 being mutually connected vertically and the first side
Face connecting plate 212 is provided with for being connect with the end face of the main driving of the shield 10 on the first end face connecting plate 211
End face mounting portion 211a is provided on the first side connecting plate 212 for connecting with the side of the main driving of the shield 10
The first side mounting portion 212a connect, and lifting lug 212b, support frame as described above 22 are additionally provided on the first side connecting plate 212
Including the second end face connecting plate 221 being mutually connected vertically and second side connecting plate 222, the second end face connecting plate 221
On be provided with second end face mounting portion 221a for connect with the end face of the main driving of the shield 10, the second side connects
Be provided on plate 222 for the second side mounting portion 222a that connect of side of the main driving of the shield 10.The overturning branch
Mast-up 21 and supporting rack 22 is respectively set in frame 20, the two relative side of the main driving of shield 10 is connected to, and to shield
The end face and side of main driving 10 form protective effect, and mast-up 21 with the suspension hook of loop wheel machine for connecting, during lifting, shield
Structure is main to drive 10 to be gradually increased by one end of lying status to its mast-up 21, and hoisting platform also supports the main driving of shield at this time
10 other end can be protected in driving main to shield 10 using supporting rack 22 in switching process, and auxiliary overturning makes overturning
Process more easily and prevent from colliding with, and shield it is main driving 10 go into the well lifting when, it can be protected to avoid being collided with；In addition, sharp
Can also be in shield machine assembling process with the turnover bracket, main driving supplys the steadying hand when being connect with shield body.
Based on the above-mentioned technical proposal, a kind of turnover bracket 20 is provided in the present embodiment, the second side connecting plate 222 is remote
The profile of lateral surface from the second end face connecting plate 221 is set as arc.Outer by second end face connecting plate 221 shows to set
Be set to arcuate structure, make shield it is main driving 10 rotated in switching process it is more smooth, overturning it is more stable, more can easily make shield
The main driving of structure 10 is turned into upright posture, it is ensured that the main driving of lifting process shield 10 will not directly collide with outside.
Specifically, in order to make mast-up 21 and supporting rack 22 be connect securely with the end face of the main driving of shield 10, described the
The end face mounting portion 211a and second end face mounting portion 221a be inner surface be bonded the shield it is main driving 10 end face
Supporting steel plate, the mounting hole 31 for connect with the end face of the main driving of the shield 10 is offered on the supporting steel plate, it is sharp
Mast-up 21 and supporting rack 22 can be connected to the end face of the main driving of the shield 10 with fastener by the mounting hole 31.
Preferably likewise, in the present embodiment, the first side mounting portion 212a and the second side mounting portion
222a be inner surface be bonded the shield it is main driving 10 side support steel plate, the support steel plate be equipped with for institute
The trip 41 of the side connection of the main driving of shield 10 is stated, the main mounting hole for driving 10 sides of trip 41 and shield is matched, will be hung
Shelve 21 and the side of the main driving of supporting rack 22 and shield 10 steadily connect.
Preferably, in order to ensure the intensity of each interconnecting piece in turnover bracket 20, the first end face mounting portion 211a,
One side mounting portion 212a and the junction of the mast-up 21 are both provided with deep floor 50, the second end face mounting portion
221a, second side mounting portion 222a and the junction of support frame as described above 22 are also equipped with deep floor 50.
Based on the above-mentioned technical proposal, in the present embodiment, in order to preferably protect the main driving of shield in lifting, switching process
10, the turnover bracket 20 includes two intervals and the parallel arrangement of mast-up 21, is led between two mast-ups 21
Cross the connection of crossbeam 60.
Similarly, the turnover bracket 20 includes two intervals and parallel arrangement of support frame as described above 22, two branch
It is connected by crossbeam 60 between support 22.
Illustratively, the crossbeam 60 uses H profile steel, structure more secured.
Same purpose, the present invention also provides a kind of hanging method of the main driving of shield, the specific steps are：By above-mentioned
Mast-up 21 and support frame as described above 22 described in one are connected to 10 opposite both sides of the main driving of the shield, and described first
End face connecting plate 211 and first end face connecting plate 221 are installed on the same end face of the main driving of shield 10, and the suspension hook of loop wheel machine is connected
In on the lifting lug 212b of the mast-up 21, during loop wheel machine lifting, the shield is main to drive 10 to be lifted by crane by lying low, the shield
One end that main driving 10 connects the mast-up 21 is up lifted by crane, at this point, guarantor is played in the bottom for driving 10 main to shield of supporting rack 22
Shield acts on, and as sling height gradually rises, the first side connecting plate 212 is far from the first end face connecting plate 211
Side is contacted with hoisting platform, and contact position is connected from close to the first end face connecting plate 211 to far from the first end face
Plate 211 moves, and contact area changes from small to big and becomes smaller again, finally completely disengages hoisting platform, and the main driving of the shield 10 is in perpendicular
Straight state is sling completely.
Using hanging method described above, easily the main driving of shield 10 can be overturn from lying status to vertical shape
State need to only use a loop wheel machine, just can be completed without using more lifting machines, save lifting space, and can effectively prevent
Shield 10 colliding with during lifting of main driving.
After completing above-mentioned lifting action, it is also necessary to will the main driving of shield 10 be gone into the well lifting to be assembled in shield body
On, at this time turnover bracket 20 can the main driving of shield 10 prevent colliding with during going into the well, and the main driving of shield 10 can be made
It supplys the steadying hand with the connection procedure of shield body.
To sum up, the embodiment of the present invention provides a kind of turnover bracket 20 and the hanging method of the main driving of shield 10, turnover bracket
20 are mainly used for assisting the overturning during main 10 lifting of driving of shield, and turnover bracket 20 includes being connected to the main driving of shield
The mast-up 21 and supporting rack 22 of 10 two opposing lateral sides are connect with the main end face for driving 10 of shield and side, in lifting shield
During main driving 10, turnover bracket 20 can assist shield is main to drive 10 overturning from lying status to upright state, turn over
Turn light, and protect the main driving 10 of shield, to prevent colliding in lifting and entire hoisting process.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these improve and replace
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of turnover bracket, for lifting auxiliary overturning when the main driving of shield, which is characterized in that including mast-up and support
Frame, the mast-up and support frame as described above are respectively arranged in the opposite both sides of the main driving of the shield,
The mast-up includes the first end face connecting plate being mutually connected vertically and first side connecting plate, and the first end face connects
The first end face mounting portion for being connect with the end face of the main driving of the shield, the first side connecting plate are provided on fishplate bar
On be provided with first side mounting portion for being connect with the side of the main driving of the shield, and on the first side connecting plate
Lifting lug is additionally provided with,
Support frame as described above includes the second end face connecting plate being mutually connected vertically and second side connecting plate, and the second end face connects
The second end face mounting portion for being connect with the end face of the main driving of the shield, the second side connecting plate are provided on fishplate bar
On be provided with second side mounting portion for being connect with the side of the main driving of the shield.
2. turnover bracket as described in claim 1, which is characterized in that the second side connecting plate is far from the second end face
The profile of the lateral surface of connecting plate is set as arc.
3. turnover bracket as described in claim 1, which is characterized in that the first end face mounting portion and second end face peace
Dress portion is the supporting steel plate that inner surface is bonded the end face of the main driving of the shield, offered on the supporting steel plate for institute
State the mounting hole of the end face connection of the main driving of shield.
4. turnover bracket as claimed in claim 3, which is characterized in that the first side mounting portion and second side peace
Dress portion is the support steel plate that inner surface is bonded the side of the main driving of the shield, the support steel plate be equipped with for it is described
The trip of the side connection of the main driving of shield.
5. turnover bracket as described in claim 1, which is characterized in that the first end face mounting portion, first side mounting portion
Be both provided with deep floor with the junction of the mast-up, the second end face mounting portion, second side mounting portion with it is described
The junction of supporting rack is also equipped with deep floor.
6. the turnover bracket as described in any one of claim 1-5, which is characterized in that the turnover bracket includes two intervals
And the parallel arrangement of mast-up, it is connected by crossbeam between two mast-ups.
7. the turnover bracket as described in any one of claim 1-5, which is characterized in that the turnover bracket includes two intervals
And parallel arrangement of support frame as described above, it is connected by crossbeam between two support frames as described above.
8. a kind of hanging method of the main driving of shield, which is characterized in that the specific steps are：
Turnover bracket described in any one of claim 1-7 is connected in the main driving of the shield, the mast-up and institute
It states supporting rack and is connected to the opposite both sides of the main driving of the shield, the first end face connecting plate and first end face connecting plate
It is installed on the same end face of the main driving of shield, the suspension hook of loop wheel machine is connected on the lifting lug of the mast-up, loop wheel machine lifts by crane process
In, the main driving of shield is up lifted by crane by the lifting that lies low, the main one end for being drivingly connected the mast-up of the shield, at this point,
Supporting rack shields to the bottom of the main driving of shield, and as sling height gradually rises, the main driving of shield is in vertical
State is sling completely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395530.9A CN108639933B (en) | 2018-04-27 | 2018-04-27 | Overturning bracket and hoisting method of shield main drive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810395530.9A CN108639933B (en) | 2018-04-27 | 2018-04-27 | Overturning bracket and hoisting method of shield main drive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108639933A true CN108639933A (en) | 2018-10-12 |
| CN108639933B CN108639933B (en) | 2020-06-05 |
Family
ID=63748102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810395530.9A Active CN108639933B (en) | 2018-04-27 | 2018-04-27 | Overturning bracket and hoisting method of shield main drive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108639933B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482395A (en) * | 2019-08-27 | 2019-11-22 | 中铁隧道局集团有限公司 | A kind of shield body auxiliary turning-over device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0949389A (en) * | 1995-05-26 | 1997-02-18 | Taisei Corp | Shield machine |
| CN202744191U (en) * | 2012-06-05 | 2013-02-20 | 华锐风电科技(集团)股份有限公司 | Hanger for variable pitch bearing |
| CN206376871U (en) * | 2017-01-13 | 2017-08-04 | 中铁十一局集团城市轨道工程有限公司 | Turnover bracket is disassembled in a kind of shield owner driving hole |
| CN208103873U (en) * | 2018-04-25 | 2018-11-16 | 中铁工程装备集团有限公司 | A kind of main driving turnover hoisting device of major diameter |
| CN208378195U (en) * | 2018-04-27 | 2019-01-15 | 广州轨道交通建设监理有限公司 | A kind of turnover bracket |
-
2018
- 2018-04-27 CN CN201810395530.9A patent/CN108639933B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0949389A (en) * | 1995-05-26 | 1997-02-18 | Taisei Corp | Shield machine |
| CN202744191U (en) * | 2012-06-05 | 2013-02-20 | 华锐风电科技(集团)股份有限公司 | Hanger for variable pitch bearing |
| CN206376871U (en) * | 2017-01-13 | 2017-08-04 | 中铁十一局集团城市轨道工程有限公司 | Turnover bracket is disassembled in a kind of shield owner driving hole |
| CN208103873U (en) * | 2018-04-25 | 2018-11-16 | 中铁工程装备集团有限公司 | A kind of main driving turnover hoisting device of major diameter |
| CN208378195U (en) * | 2018-04-27 | 2019-01-15 | 广州轨道交通建设监理有限公司 | A kind of turnover bracket |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110482395A (en) * | 2019-08-27 | 2019-11-22 | 中铁隧道局集团有限公司 | A kind of shield body auxiliary turning-over device |
| CN110482395B (en) * | 2019-08-27 | 2020-12-11 | 中铁隧道局集团有限公司 | Supplementary turnover device of shield body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108639933B (en) | 2020-06-05 |
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Inventor after: Yang Mingxian Inventor after: Sun Zhenchuan Inventor after: Li Fengyuan Inventor after: Zhang Bing Inventor after: Chen Qiao Inventor after: Yang Zhenxing Inventor after: Wang Kai Inventor after: Wang Famin Inventor after: Chen Ruixiang Inventor after: Lv Qianqian Inventor after: Huang Weiran Inventor after: Li Shijia Inventor after: Qu Suihui Inventor after: Kong Shaobo Inventor after: Zhang Lianghui Inventor after: Yang Jiangxiao Inventor after: Niu Zilong Inventor after: Yang Shujiang Inventor before: Yang Mingxian Inventor before: Zhang Zhenchuan Inventor before: Li Fengyuan Inventor before: Zhang Bing Inventor before: Chen Qiao Inventor before: Yang Zhenxing Inventor before: Wang Kai Inventor before: Wang Famin Inventor before: Chen Ruixiang Inventor before: Lv Qianqian Inventor before: Huang Weiran Inventor before: Li Shijia Inventor before: Qu Suihui Inventor before: Kong Shaobo Inventor before: Zhang Lianghui Inventor before: Yang Jiangxiao Inventor before: Niu Zilong Inventor before: Yang Shujiang |
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