CN104213555B - Ultra-long pile foundation steel protection tube nondestructive recovery method - Google Patents
Ultra-long pile foundation steel protection tube nondestructive recovery method Download PDFInfo
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- CN104213555B CN104213555B CN201410416202.4A CN201410416202A CN104213555B CN 104213555 B CN104213555 B CN 104213555B CN 201410416202 A CN201410416202 A CN 201410416202A CN 104213555 B CN104213555 B CN 104213555B
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Abstract
The invention relates to the field of pile foundation protection tube pile construction, and discloses an ultra-long pile foundation steel protection tube nondestructive recovery method. The method comprises the following steps that a, an operation platform (4) is arranged, and an outer protection tube (1) is buried; b, an inner protection tube (2) is buried in the outer protection tube (1); c, a drill bit of a drilling machine is charged into the inner protection tube (2), and holes are drilled in the inner protection tube (2); d, after the drilling completion, concrete casting is carried out; e, after the casting completion, the inner protection tube (2) is pulled out before the primary concrete setting; f, a concrete pile foundation is detected, and the outer protection tube (1) is pulled out after the detection qualification; g, the outer protection tube (1) and the inner protection tube (2) are trimmed for being used in a next time. The method provided by the invention has the advantages that the steel protection tube is designed into a segmented flange connecting structure, meanwhile, a pressure ejection mode is adopted, i.e., the steel protection tube can still be taken out to be repeatedly used during the preparation of the steel protection tube concrete foundation pile being more than 21 to 30m, the energy sources are saved, the environment is protected, and the engineering construction cost is reduced.
Description
Technical field
The present invention relates to pile foundation steel pile casting pile driving construction field, a kind of more particularly, to lossless time of overlength pile foundation steel pile casting
Receiving method.
Background technology
At present, traditional pile foundation steel pile casting construction, the steel using amount of steel pile casting is big, and steel pile casting also cannot effectively enter
Row recycles, and therefore cost is higher.Although also relating to the construction method of steel pile casting recycling in prior art,
It is merely able to solve less than 10 meters of steel pile casting and reclaims, when steel pile casting length is more than 11 meters, or reach 30 meters and longer when, due to
Steel pile casting is greatly increased with the contact area of concrete, therefore, uses conventional methods and will be unable to effectively extract steel pile casting.
Content of the invention
The present invention is directed to traditional pile foundation steel pile casting construction in prior art it is impossible to carry out reclaiming profit steel pile casting
With or be only capable of reclaiming less than 10 meters steel pile casting, when building longer Pile Foundation Concrete, steel pile casting just cannot efficient recovery etc. lack
Point, there is provided one kind, by steel pile casting is designed to segmentation structure, is connected by segmentation between each steel pile casting, adopts simultaneously
Pressure pushing method, even if prepare more than 21 meters of steel pile casting concrete foundation pile, remains able to take out steel pile casting and reuses
Overlength pile foundation steel pile casting recycle without damage method.
In order to solve above-mentioned technical problem, the present invention is addressed by following technical proposals:
Overlength pile foundation steel pile casting recycle without damage method, comprises the following steps:
A, placement operations platform, bury outer casing；
B, embedded in outer casing in casing；
C, by the drill bit of boring machine load in casing, and in interior casing internal drilling；
After the completion of d, boring, carry out pouring concrete；
E, pour end after, concrete initial set before extract interior casing；
F, concrete pipe base is detected, after detection is qualified, extract outer casing；
G, outer casing, interior casing treat use next time after rebuilding.
Preferably, in step e: after Pile Foundation Concrete pours and finishes, before concrete initial set, with loop wheel machine, interior casing is extracted.
Preferably, in step e: after Pile Foundation Concrete pours and finishes, before concrete initial set, using with loop wheel machine, interior casing is pulled out
Go out.Vibration hammer is clamped with outer casing during piling, is squeezed into outer casing by continuous vibration.
Preferably, in step f: treat pile foundation after the assay was approved, using pressure jacking apparatus, outer casing is extracted, pressure
Jacking apparatus include forcing press and end socket, are connected by pipeline between forcing press and end socket, and end socket is solid with the sealing of outer casing upper end
Fixed connection, is pressurizeed by injection liquids and gases in the outside casing of forcing press, using the retroaction of liquids and gases pressure
End socket and outer casing constantly jack-up upwards, loop wheel machine are fixedly connected by power with end socket, and loop wheel machine is sling end socket pull out outer casing together
Go out.The advantage of liquid pressing is stable, safety, but ejection speed is slow；And the shortcoming of gas pressurized is to be not sufficiently stable, pressurizeed
Conference leads to outer casing explosion.Pressurizeed using being injected simultaneously into liquids and gases, the advantage having had both concurrently, there is ejection speed
Degree is fast, more stablizes safety simultaneously.
Preferably, outer casing is by outer connection casing, and more than two sections of outer casing unit forms, under outer connection casing
End is connected with outer casing unit, the two ends setting adpting flange of outer casing unit, and adpting flange arranges bolt connecting hole.Every section
The length of outer casing unit is 10-15 rice.
Preferably, arranging groove or fin on adpting flange, between adjacent adpting flange, a setting groove, another
Individual setting fin, is connected by groove or fin between two adjacent adpting flanges.Single outer casing unit or interior casing
Unit is respectively provided with a flange up and down, and one of flange arranges groove, and another flange is provided with fin, therefore two outer
Can be connected by groove or fin between casing unit or interior casing unit.
Preferably, adpting flange groove in arrange compressive sealed bonding material, compressive sealed bonding material be silica gel,
One of rubber, Colophonium of hot melt or more than one mixture, or the mixture of the Colophonium of hot melt and rubber powder, or hot melt
Colophonium and wood flour mixture.Silica gel, rubber, the Colophonium of hot melt, as the binding agent between outer casing unit, simultaneously work as
The effect connecting and sealing, by adding rubber powder or wood flour in above-mentioned hot melt liquid, can reduce the mobility of hot melt liquid,
Improve adhesion strength, effectively strengthen the pressure of sealing system.
Preferably, when outer connection casing bottom is apart from more than 1 meter of operating platform plane, by outer connection casing and outer shield
Cylinder unit disassembling separates, and is moved to end socket above outer casing unit by loop wheel machine, end socket is tightly connected with outer casing unit, leads to
Injection liquids and gases are pressurizeed in the outside casing of excess pressure machine, using liquids and gases pressure counteracting force by end socket and
Outer casing constantly jack-up upwards, when the outer casing unit being connected with end socket rises to operating platform, by outer casing unit with
The outer casing unit of section separates, after end socket and connected outer casing unit are hung, by connected for end socket outer casing list
Unit's partition, end socket is connected with the outer casing unit of lower section, so constantly reclaims remaining outer casing unit.Outer connect casing upper
Hold as straight tube, be not provided with flange, end socket is sealed by hydraulic clamp with the outer upper end connecting casing, and whole process is due to end socket one
Straight and outer connection casing is fixedly connected, and need not dismantle it is only necessary to constantly outer connection casing is carried out dismounting group with outer casing unit
Dress.Outer connection casing is separated with outer casing unit disassembling directly to split into after outer casing installation and separates.
Preferably, the length of outer casing unit is more than 21 meters, the length of interior casing unit is more than 21 meters.Outer casing
Unit is connected by flange, and interior casing unit passes through to be welded to connect.
Preferably, casing positioner in interior casing outer wall setting, interior casing positioner is arc spacer, arc
Spacer is welded on interior casing outer wall, and arc spacer is axially distributed along interior casing.
The present invention, due to employing above technical scheme, has significant technique effect: the present invention is by setting steel pile casting
Count into segmentation structure, adopt pressure pushing method simultaneously, even if when 11 meters of preparation, more than 30 meters of steel pile casting concrete foundation pile,
Remain able to take out steel pile casting and reuse, reduce the construction cost of engineering, saved the energy, protect environment.
Brief description
Fig. 1 is the scheme of installation of overlength pile foundation steel pile casting of the present invention.
Fig. 2 is the connection diagram of end socket and outer casing in embodiment 1.
Fig. 3 is schematic diagram when pulling out on embodiment 1 China and foreign countries' casing.
Fig. 4 is connection diagram between outer connection casing and outer casing unit.
Fig. 5 is outer casing unit top view.
Fig. 6 is to pass through adpting flange connection diagram between outer casing unit.
Fig. 7 is top view when interior casing is socketed in outer casing.
Fig. 8 is interior casing positioner is arc.
The toponym that in the figures above, each number designation is referred to is as follows: wherein 1 outer casing, casing in 2,3
Loop wheel machine, 4 operating platforms, 5 the earth, 6 pressure jacking apparatus, casing positioner, 11 outer casing lists in 7,8
Unit, 12 adpting flanges, 13 bolt connecting holes, 14 fins, 15 outer connection casings, 61 forcing presses, 62 end sockets.
Specific embodiment
1,2,4,5,6,7,8 with embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings:
Embodiment 1
Overlength pile foundation steel pile casting recycle without damage method, comprises the following steps:
A, placement operations platform 4, bury outer casing 1；
B, embedded in outer casing 1 in casing 2；
C, by the drill bit of boring machine load in casing 2, and in the internal drilling of interior casing 2；
After the completion of d, boring, carry out pouring concrete；
E, pour end after, concrete initial set before extract interior casing 2；
F, concrete pipe base is detected, after detection is qualified, extract outer casing 1；
G, outer casing 1, interior casing 2 treat use next time after rebuilding.
In step a, when burying outer casing, vibration hammer is connected with the outer connection casing 15 on outer casing 1, and vibration hammer passes through folder
Tightly outer casing is fixed, and during piling, vibration hammer vibrates outer casing, while outer casing 2 is squeezed into.When outer casing 1 is extracted, directly
Connect and outer connection casing 15 is dismantled, outer casing unit 11 is directly tightly connected with the end socket 62 on pressure jacking apparatus 6, works as end socket
62 and one the outer casing unit 11 of section rise to operating platform after, outer for this section casing unit 11 is saved outer casing unit and separates with lower,
End socket 62 and this outer casing unit 11 hang after moving to correct position, end socket 62 are separated with this outer casing unit 11, end socket 62 is again
Continue to be connected with the outer casing unit of lower section, so circulate, realize all outer casing units and reclaim.
In step e: after Pile Foundation Concrete pours and finishes, before concrete initial set, with loop wheel machine 3, interior casing 2 is extracted.
In step f: treat pile foundation after the assay was approved, using pressure jacking apparatus 6, outer casing 1 is extracted, pressure jacking fills
Put 6 and include forcing press 61 and end socket 62, be connected by pipeline between forcing press 61 and end socket 62, end socket 62 and outer casing 1 upper end
It is sealedly and fixedly connected, pressurizeed by injection liquids and gases in the outside casing 1 of forcing press 61, using liquids and gases pressure
Counteracting force by end socket 62 and outer casing 1 constantly jack-up upwards, loop wheel machine 3 is fixedly connected with end socket 62, and loop wheel machine 3 is sling end socket 62
And outer casing 1 is extracted together.Interior casing 2 is made up of more than one group of interior casing unit, passes through welding between interior casing unit
Connect.
Outer casing 1 is made up of the outer outer casing unit 11 connecting more than casing 15, and two sections, outer connection casing 15 lower end
It is connected with outer casing unit 11, the two ends setting adpting flange 12 of outer casing unit 11, adpting flange 12 arranges bolt connection
Hole 13.The length of every section of outer casing unit 11 is 11 meters.
Setting groove 14 or fin 16 on adpting flange 12, a setting groove 14 between adjacent adpting flange 12, separately
One setting fin 16, passes through groove 14 between two adjacent adpting flanges 12 or fin 16 is connected.
Compressive sealed bonding material is set in the groove 14 of adpting flange 12, compressive sealed bonding material is silica gel, rubber,
One of Colophonium of hot melt or more than one mixture, or the mixture of the Colophonium of hot melt and rubber powder, or the drip of hot melt
The blue or green mixture with wood flour.
When outer connection casing 15 bottom is apart from more than 1 meter of operating platform 4 plane, will be with outer connection casing 15 and outer casing
Unit 11 dismounting separates, and is moved to end socket 62 above outer casing unit 11 by loop wheel machine 3, will be close with outer casing unit 11 for end socket 62
Envelope connects, and is pressurizeed by injection liquids and gases in the outside casing 1 of forcing press 61, using the anti-work of liquids and gases pressure
Firmly by end socket 62 and the continuous jack-up upwards of outer casing 1, when the outer casing unit 11 being connected with end socket 62 rises to operating platform
When, outer casing unit 11 is separated with the outer casing unit of lower section, after end socket 62 and connected outer casing unit 11 are hung,
Connected for end socket 62 outer casing unit 11 is decoupled, end socket 62 is connected with the outer casing unit of lower section, so will be remaining outer
Casing unit constantly reclaims.The outer upper end connecting casing 15 is straight tube, is not provided with flange, and end socket 62 connects the upper of casing 15 with outer
End is sealed by hydraulic clamp, and whole process is fixedly connected with outer connection casing 15 always due to end socket 62, need not dismantle, only need
Outer connection casing 15 is constantly carried out dismounting assembling with outer casing unit 11.
The total length of outer casing 1 is more than 21 meters, and the total length of interior casing 2 is more than 21 meters.Interior casing positioner 8 is
Arc spacer, along outer casing 1 radial distribution, arc spacer is fixedly welded on outer casing 1 inwall arc spacer.As figure
7th, shown in 8, casing positioner 8 in interior casing 2 outer wall setting, interior casing positioner 8 is arc spacer, arc spacer
It is welded on interior casing 2 outer wall, arc spacer is axially distributed along interior casing 2.
Embodiment 2
The present embodiment is with the difference of embodiment 1: outer casing 1 is made up of more than two sections of outer casing unit 11, outer company
Connect casing 15 upper end to be fixedly connected with end socket 62, outer connection casing 15 lower end is connected with outer casing unit 11, outer casing unit 11
Two ends setting adpting flange 12, on adpting flange 12 arrange bolt connecting hole 13.The length of every section of outer casing unit 11 is 12
Rice.In the groove 14 of adpting flange 12, compressive sealed bonding material is set, compressive sealed bonding material is Colophonium and the rubber of hot melt
The mixture of rubber powder.Add rubber powder in the Colophonium after hot melt, Colophonium mobility can be reduced, improve fin 16 and groove 14
Bond strength it is ensured that sealing effectiveness.
Embodiment 3
The present embodiment is with the difference of embodiment 1: outer casing 1 is by the outer outer shield connecting more than casing 15, and two sections
Cylinder unit 11 forms, and outer connection casing 15 upper end is fixedly connected with end socket 62, outer connection casing 15 lower end and outer casing unit 11
Connect, the two ends setting adpting flange 12 of outer casing unit 11, adpting flange 12 arranges bolt connecting hole 13.Every section of outer casing
The length of unit 11 is 13 meters.
Compressive sealed bonding material is set in the groove 14 of adpting flange 12, compressive sealed bonding material be hot-melt asphalt with
The mixture of wood flour.Sealing between adjacent outer casing unit 11 can be improved by setting hot-melt asphalt, meanwhile, in hot melt
Add wood flour in Colophonium afterwards, Colophonium mobility can be reduced, improve the bond strength of fin 16 and groove 14.
Embodiment 4
The present embodiment is with the difference of embodiment 1: outer casing 1 is by the outer outer shield connecting more than casing 15, and two sections
Cylinder unit 11 forms, and outer connection casing 15 upper end is fixedly connected with end socket 62, outer connection casing 15 lower end and outer casing unit 11
Connect, the two ends setting adpting flange 12 of outer casing unit 11, adpting flange 12 arranges bolt connecting hole 13.Every section of outer casing
The length of unit 11 is 14 meters.In the groove 14 of adpting flange 12, compressive sealed bonding material, compressive sealed bonding material are set
For silica gel or rubber.
Embodiment 5
The present embodiment is with the difference of embodiment 1: outer casing 1 is by the outer outer shield connecting more than casing 15, and two sections
Cylinder unit 11 forms, and outer connection casing 15 upper end is fixedly connected with end socket 62, outer connection casing 15 lower end and outer casing unit 11
Connect, the two ends setting adpting flange 12 of outer casing unit 11, adpting flange 12 arranges bolt connecting hole 13.Every section of outer casing
The length of unit 11 is 14.6 meters.In the groove 14 of adpting flange 12, compressive sealed bonding material, compressive sealed adhesive are set
Matter is the Colophonium of hot melt.
In a word, the foregoing is only presently preferred embodiments of the present invention, all equalizations made according to scope of the present invention patent
Change and modification, all should belong to the covering scope of patent of the present invention.
Claims (5)
1. overlength pile foundation steel pile casting recycle without damage method is it is characterised in that comprise the following steps:
A, placement operations platform (4), bury outer casing (1)；Outer connection when burying outer casing, on vibration hammer and outer casing (1)
Casing (15) connects, and vibration hammer passes through to clamp outer casing to be fixed, during piling, the vibration hammer outer casing of vibration, while by outer shield
Cylinder (1) is squeezed into；Outer casing (1) is by outer connection casing (15), and more than two sections of outer casing unit (11) forms, outer connection shield
Cylinder (15) lower end is connected with outer casing unit (11), and adpting flange (12) is upper to arrange bolt connecting hole (13)；Outer casing unit
(11) two ends setting adpting flange (12), the length of every section of outer casing unit is 10-15 rice；The upper setting of adpting flange (12) is recessed
Groove (14) or fin (16), setting groove (14) between adjacent adpting flange (12), another setting fin (16), two
Pass through groove (14) between individual adjacent adpting flange (12) or fin (16) is connected；
B, embedded in outer casing (1) in casing (2)；Interior casing positioner (8) is arc spacer, and arc spacer edge is outer
Casing (1) radial distribution, arc spacer is fixedly welded on outer casing (1) inwall；
C, will boring machine drill bit load in casing (2), and in interior casing (2) internal drilling；
After the completion of d, boring, carry out pouring concrete；
E, pour end after, concrete initial set before extract interior casing (2)；After Pile Foundation Concrete pours and finishes, before concrete initial set, use loop wheel machine
(3) interior casing (2) is extracted；
F, concrete pipe base is detected, after detection is qualified, extract outer casing (1)；Treat pile foundation after the assay was approved, using pressure
Outer casing (1) is extracted by power jacking apparatus (6), and pressure jacking apparatus (6) include forcing press (61) and end socket (62), forcing press
(61) it is connected by pipeline between end socket (62), end socket (62) is sealedly and fixedly connected with outer casing (1) upper end, by forcing press
(61) outwards in casing (1), injection liquids and gases are pressurizeed, using liquids and gases pressure counteracting force by end socket
(62) and outer casing (1) constantly jack-up upwards, loop wheel machine (3) is fixedly connected with end socket (62), and loop wheel machine (3) is sling end socket (62) general
Outer casing (1) is extracted together；The outer upper end connecting casing (15) is straight tube, is not provided with flange, end socket (62) and outer connection casing
(15) upper end is sealed by hydraulic clamp；
G, outer casing (1), interior casing (2) treat use next time after rebuilding.
2. overlength pile foundation steel pile casting recycle without damage method according to claim 1 it is characterised in that: adpting flange (12)
Groove (14) in compressive sealed bonding material is set, compressive sealed bonding material is silica gel, rubber, in the Colophonium of hot melt one
Plant or more than one mixture, or the mixture of the Colophonium of hot melt and rubber powder, or the mixture of the Colophonium of hot melt and wood flour.
3. overlength pile foundation steel pile casting recycle without damage method according to claim 1 it is characterised in that: when outer connection casing
(15) bottom apart from more than 1 meter of operating platform (4) plane when, by outer connection casing (15) and outer casing unit (11) dismounting point
From end socket (62) being moved to above outer casing unit (11) by loop wheel machine (3), by end socket (62) and the sealing of outer casing unit (11)
Connect, pressurizeed by injection liquids and gases in forcing press (61) outwards casing (1), anti-using liquids and gases pressure
Active force by end socket (62) and outer casing (1) constantly jack-up upwards, when the outer casing unit (11) being connected with end socket (62) is risen
During to operating platform, outer casing unit (11) is separated with the outer casing unit of lower section, by end socket (62) and connected outer shield
After cylinder unit (11) hangs, connected for end socket (62) outer casing unit (11) is decoupled, end socket (62) saves outer casing with lower
Unit connects, and so constantly reclaims remaining outer casing unit.
4. overlength pile foundation steel pile casting recycle without damage method according to claim 1 it is characterised in that: outer casing unit
(11) length is more than 21 meters, and the length of interior casing unit is more than 21 meters.
5. overlength pile foundation steel pile casting recycle without damage method according to claim 1 it is characterised in that: interior casing (2) is outward
Casing positioner (8) in wall setting, interior casing positioner (8) is arc spacer, and arc spacer is welded on interior casing
(2) on outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416202.4A CN104213555B (en) | 2014-08-22 | 2014-08-22 | Ultra-long pile foundation steel protection tube nondestructive recovery method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410416202.4A CN104213555B (en) | 2014-08-22 | 2014-08-22 | Ultra-long pile foundation steel protection tube nondestructive recovery method |
Publications (2)
| Publication Number | Publication Date |
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| CN104213555A CN104213555A (en) | 2014-12-17 |
| CN104213555B true CN104213555B (en) | 2017-02-01 |
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| CN201410416202.4A Expired - Fee Related CN104213555B (en) | 2014-08-22 | 2014-08-22 | Ultra-long pile foundation steel protection tube nondestructive recovery method |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703027A (en) * | 2015-11-12 | 2017-05-24 | 中国电力科学研究院 | Combined pile casing for power transmission tower foundation |
| CN107966405B (en) * | 2017-12-25 | 2024-07-02 | 合肥工业大学 | Experimental model structure for binding characteristics of concrete and steel casing |
| CN110080225B (en) * | 2019-03-29 | 2021-06-18 | 徐胜祥 | Recovery method for ultra-long and ultra-large steel casing |
| CN109958128B (en) * | 2019-04-01 | 2024-02-27 | 浙江交工路桥建设有限公司 | Pile foundation drilling steel casing inserted into land deep soil layer and recovery method thereof |
| CN111005374A (en) * | 2019-11-27 | 2020-04-14 | 亨通海洋工程有限公司 | Construction process for replacing slurry retaining wall |
| CN111021356A (en) * | 2019-12-26 | 2020-04-17 | 上海隧道工程有限公司 | Method and device for recovering steel casing of mudflat pile foundation |
| CN113309080B (en) * | 2021-04-19 | 2022-10-21 | 中铁十九局集团第三工程有限公司 | Construction method of double-casing cast-in-situ bored pile |
| CN115288138A (en) * | 2022-08-26 | 2022-11-04 | 中国铁建大桥工程局集团有限公司 | Method for pulling off steel casing of offshore deep pile without platform |
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| CN200988964Y (en) * | 2006-12-27 | 2007-12-12 | 朱启贵 | Steel protective tube for drilling pile |
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| CN104213555A (en) | 2014-12-17 |
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Address after: 310051, 15-16 building, Qianjiang building, 2031 Jiangling Road, Binjiang District, Zhejiang, Hangzhou Applicant after: QIANCHAO CONSTRUCTION CO.,LTD. OF ZHEJIANG COMMUNICATIONS CONSTRUCTION Group Address before: 310051, 15-16 building, Qianjiang building, 2031 Jiangling Road, Binjiang District, Zhejiang, Hangzhou Applicant before: ENGINEERING CONSTRUCTION Group OF THE TRAFFIC IN ZHEJIANG |
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Inventor after: Xu Shengxiang Inventor after: Yang Changneng Inventor after: Sheng Zhenhua Inventor after: Zhu Ruwu Inventor after: Gao Shuitang Inventor after: Kong Qinglin Inventor after: Shao Yanhua Inventor after: Song Jianqiang Inventor after: Wang Xiaoming Inventor after: Li Qiuzhang Inventor after: Fang Junjie Inventor after: Mao Yihua Inventor after: Lin Qiong Inventor after: Sun Yeping Inventor after: Chen Dinghai Inventor after: Bian Hangfeng Inventor after: Liu Bin Inventor after: Jin Yifeng Inventor after: Zhao Zhenyu Inventor after: Luo Pengcheng Inventor after: Liang Binbin Inventor after: Wu Keshuang Inventor after: Wu Youping Inventor after: Li Weiyan Inventor after: Wei Chaohui Inventor after: Huang Xiaowei Inventor after: Zhou Quan Inventor after: Sheng Yongjun Inventor before: Xu Shengxiang Inventor before: Kong Qinglin Inventor before: Shao Yanhua Inventor before: Song Jianqiang Inventor before: Fang Junjie Inventor before: Lin Qiong Inventor before: Sun Yeping Inventor before: Chen Dinghai Inventor before: Bian Hangfeng Inventor before: Mao Yihua Inventor before: Wu Keshuang Inventor before: Li Weiyan Inventor before: Huang Xiaowei Inventor before: Zhou Quan Inventor before: Sheng Yongjun Inventor before: Sheng Zhenhua Inventor before: Gao Shuitang |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170201 Termination date: 20210822 |