CN103967008A - Clip type pre-stress anchor cable active clip feeding and tension locking device and use method - Google Patents
Clip type pre-stress anchor cable active clip feeding and tension locking device and use method Download PDFInfo
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- CN103967008A CN103967008A CN201410134981.9A CN201410134981A CN103967008A CN 103967008 A CN103967008 A CN 103967008A CN 201410134981 A CN201410134981 A CN 201410134981A CN 103967008 A CN103967008 A CN 103967008A
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- steel strand
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Abstract
The invention discloses a clip type pre-stress anchor cable active clip feeding and tension locking device and a use method. The clip type pre-stress anchor cable active clip feeding and tension locking device comprises a steel strand, a working anchor, a clip, an anchor matching plate, a tool anchor, a tool anchor clip and a jack, and is characterized in that the jack is a composite center hole jack, one end of the composite center hole jack is provided with a tension jack, and the other end of the composite center hole jack is used for locking a clip feeding and locking jack of the steel strand. The use method of the clip type pre-stress anchor cable active clip feeding and tension locking device includes the steps that after the tensioning force reaches a designed value and is stable, a clip feeding piston of the clip feeding and locking jack pushes the anchor matching plate, the anchor matching plate pushes the working anchor clip to move into a conical wedge hole of the working anchor, and therefore a steel strand bundle is actively wedged and locked. The clip type pre-stress anchor cable active clip feeding and tension locking device and the use method have the advantages that the clip feeding and locking jack pushes the corresponding anchor matching plate so as to enable the clip to move towards the wedge hole of the working anchor, the working anchor clip is wedged into the wedge hole of the working anchor while thrust of the clip feeding and locking jack increases, and therefore the steel strand bundle is clamped tightly; in this way, the steel strand can not be drawn back, the loss value of pre-stress does not need to be estimated, operation is more accurate, and errors are smaller.
Description
Technical field
This patent relates to a kind of clip type prestress anchorage cable and initiatively send folder tensioning fixation device and using method, belongs to Construction of Civil Engineering field, at aspects such as geological hazard control, deep foundation pit support, prestressed member and bridges, has a wide range of applications.
Background technology
Current traditional strand tapered anchorage (as shown in Figure 1), utilize exactly the wedging principle of taper hole by steel strand anchoring, be wedge shape intermediate plate steel strand anchoring in anchor slab bellmouth, when using jack pair steel wire bundle to carry out stretch-draw, locking plate moves toward limiting plate direction under the effect of steel strand, and amount of movement is subject to the restriction of the spacing amount of limiting plate; According to different industries code requirement, surpass after design stress value certain limit, jack is slowly put and is opened, the intermediate plate of ground tackle is brought in the bellmouth of anchor slab by the steel wire bundle of retracting motion, thereby locking steel strand, form an anchoring unit, the stress of steel wire bundle is delivered in building structure by anchor slab and anchor plate, forms permanent prestressing force.The size of this retraction distance has determined the size that steel strand stress loses in locking process, and the motion that locks intermediate plate in whole process is to be controlled by steel strand and passive movement all the time.The spacing distance of strand tapered anchorage limiting plate is excessive, will cause loss of prestress excessive, and too small intermediate plate scraping steel strand are serious, very easily causes steel strand damage and occurs intermediate plate stripped thread or fracture of wire.
In the existing construction prestressed cable standard of every profession and trade, the stretching force during to anchor pole tensioning fixation provides as follows: axis force of anchor when 1. < < building foundation pit supporting tecnical regulations > > (JGJ120-2012) 4.8.7 bar 4 locks should be considered the prestress lose of locking process; Prestress lose should be by determining locking the test of forward and backward axis force of anchor; While lacking test data, 1.1 times～1.15 times of the desirable lock value of axis force of anchor during locking; 2. during the formal stretch-draw of < < Technical code for shotcrete rock bolts shore > > (GB50086-2001) 7.5.5 bar 5 presstressed reinforcing steel, should be stretched to 105%～110% of design load, then value locks in accordance with regulations; 3. < < Technique Code for Building Slope Engineering > > (GB50330-2002) 7.5.6 bar 4 should surpass the super stretch-draw of 1.05～1.10 times of Soil Anchor Design prestress values, and prestressing force retention should meet design requirement; 4. < < rock soil anchor (rope) tecnical regulations > > (CECS22:2005) 8.5.2 bar anchor pole is stretched to the axial tension design load N of 1.05～1.10 times
ttime, rock stratum, sandy soil layer are kept to 10min, viscous soil horizon is kept to 15min, then off-load locks to locking design load; 5. < < high-pressure injection enlarged footing anchor pole tecnical regulations > > (JGJ/T282-2012) 5.7.2 bar anchor pole is stretched to the uplift resistance characteristic value T of 1.10～1.20 times
aktime, to sandy soil layer, should hold lotus 10min, to viscous soil horizon, should hold lotus 15min, then off-load to the tensioning lock definite value of designing requirement locks.
The super stretch-draw amount overwhelming majority of afore mentioned rules is for compensating stress loss that steel strand retractions brings.
In order to overcome above-mentioned stress loss, traditional strand tapered anchorage has also been released a kind of " low retraction prestressed anchor " at present, as shown in Figure 2, he has been divided into anchor cup and outer nut two parts by work anchor body, anchor cup and outer nut are by screw thread link, its basic principle is need be to steel strand two times tensioning: stretch-draw for the first time, identical with the conventional stretch-draw of tradition, punching jack withstands on anchor cup, tension steel strand, after reaching design pulling force, pack up jack, the intermediate plate in anchor cup clamps prestress wire in the process of steel strand retraction; Stretch-draw for the second time, punching jack withstands on anchor plate by support, stretch-draw anchor cup, the ground tackle outer nut of now working leaves anchor plate together in company with anchor cup, until stretch-draw after design load, tightens the ground tackle outer nut outside anchor cup, make it and anchor plate close contact, pack up jack and lock.Stress loss when though this type ground tackle can reduce intermediate plate locking by two times tensioning, manufacturing cost increases, tensioning fixation operation is loaded down with trivial details.
Therefore, while inventing a kind of stretch-draw, do not need super design load stretch-draw, low-cost high-efficiency prestress anchorage cable tensioning fixation device and tensioning fixation method, will produce significant impact to industry standard and working specification.
Summary of the invention
The present invention has made up that anchor clipper in prior art bounces back passive wedging by steel strand and the defect that causes anchor cable stress loss provides a kind of clip type prestress anchorage cable initiatively to send folder tensioning fixation device and using method
The technology of the present invention is achieved by the following technical solution:
A kind of clip type prestress anchorage cable initiatively send folder tensioning fixation device, comprise steel strand, steel strand front end is through work anchor and intermediate plate, by work anchor hole count and the definite ground tackle adaptation board of steel strand diameter, be used for locking moveable anchor and the tool anchor clamp of steel strand, and be used for the jack of tension steel strand, it is characterized in that: described jack is for being compound punching jack, compound punching jack one end is stretch-draw jack, the other end is to lock jack for locking the folder that send of steel strand, locking jack is used for promoting ground tackle adaptation board and work anchor intermediate plate is locked the steel strand that stretch-draw puts in place.
Further preferred version is: described compound punching jack is that electric oil pump drives respectively.
Described clip type prestress anchorage cable initiatively send the using method of folder tensioning fixation device as follows:
(1) installation work anchor, work anchor intermediate plate, ground tackle adaptation board, compound punching jack, moveable anchor, tool anchor clamp successively;
(2) connect compound punching jack and the electric oil pump and the hydraulic oil pipeline that drive jack;
(3) open the stretch-draw jack of compound punching jack, its stretch-draw piston promotes moveable anchor steel wire bundle is carried out to stretch-draw, and now, tool anchor clamp is with the increasing wedging instrument anchor chock hole of stretching force, thereby clamping steel wire bundle, work anchor intermediate plate moves toward ground tackle adaptation board direction simultaneously;
(4) when stretching force reaches design load, and stablize after certain hour by designing requirement, folder jack is sent in the locking that starts compound punching jack, send folder piston to promote ground tackle adaptation board, the ground tackle adaptation board anchoring clamping piece that pushes the work forward moves in the cone wedge hole of work anchor, thereby by initiatively wedging locking of steel wire bundle;
(5) tensioning fixation finishes, and unloads moveable anchor, compound punching jack, ground tackle adaptation board.
The invention has the beneficial effects as follows:
(1) steel strand carry out in the process of stretch-draw, the stretch-draw jack of compound punching jack one side carries out stretch-draw to steel strand, when stretch-draw is to design load and keep somewhere after certain hour, the locking of compound punching jack send folder jack to carry out work, promoting corresponding ground tackle adaptation board moves intermediate plate toward work anchor chock hole direction, work anchor intermediate plate send the increasing wedging work anchor chock hole of folder jack thrust with locking, thereby to initiatively wedging locking of steel wire bundle, active wedging due to work anchor intermediate plate, has reduced the stress loss of prestress anchorage cable in intermediate plate locking process greatly.
(2) can be according to designing requirement, keep somewhere arbitrarily stretch-draw stabilization time, because stretch-draw jack and send folder locking top to control respectively.
(3) improve utilization rate, the tensioning fixation efficiency of construction of prestressed material.
(4) with respect to " low retraction prestressed anchor ", reduced its ground tackle manufacturing cost.
Accompanying drawing explanation
Fig. 1 is traditional clip type prestress anchorage cable " limiting plate " formula tensioning fixation device basic structure schematic diagram;
Fig. 2 is traditional clip type prestress anchorage cable " low retraction prestressed anchor " basic structure schematic diagram;
Fig. 3 is that clip type prestress anchorage cable of the present invention initiatively send folder tensioning fixation device basic structure simplified schematic diagram;
Fig. 4 is that clip type prestress anchorage cable of the present invention initiatively send folder tensioning fixation device basic structure schematic diagram;
Fig. 5 is that compound punching jack of the present invention drives oil pump and control system schematic diagram.
Fig. 6 is that ground tackle adaptation board master of the present invention looks and sectional structure schematic diagram.
1 prestress wire in figure, 2 tool anchor clamps, 3 moveable anchors, 4 compound punching jack, 5 stretch-draw jacks, 6 stretch-draw pistons, 7 stretch-draw jack pistons return cylinder oil nozzle, and 8 stretch-draw jack pistons go out cylinder oil nozzle, and 9 lockings send 10 lockings of folder jack to send folder jack piston, 11 lockings send folder jack piston to go out cylinder oil nozzle, and 12 lockings send folder jack piston to return cylinder oil nozzle, 13 ground tackle adaptation boards, 13-1 limiting plate, 14 work anchor intermediate plates, 15 work anchors, 15-1 work anchor anchor cup, 15-2 work anchor nut.
The specific embodiment
For technical scheme of the present invention is better described, below in conjunction with accompanying drawing, further describe: as shown in the figure, the present invention includes prestressing force prestress wire 1, tool anchor clamp 2, moveable anchor 3, compound punching jack 4, stretch-draw jack 5, stretch-draw piston 6, stretch-draw jack piston returns cylinder oil nozzle 7, stretch-draw jack piston goes out cylinder oil nozzle 8, folder jack 9 is sent in locking, folder jack piston 10 is sent in locking, locking send folder jack piston to go out cylinder oil nozzle 11, locking send folder jack piston to return cylinder oil nozzle 12, ground tackle adaptation board 13, limiting plate 13-1, work anchor intermediate plate 14, work anchor 15, work anchor anchor cup 15-1, work anchor nut 15-2.
Clip type prestress anchorage cable of the present invention initiatively send folder tensioning fixation device, comprise prestress wire 1, prestress wire 1 front end is through work anchor 15 and work anchor intermediate plate 14, by the ground tackle adaptation board 13 matching with work anchor 15 hole counts and prestress wire 1 diameter, be used for locking moveable anchor 3 and the tool anchor clamp 2 of prestress wire 1, and be used for the jack of stretch-draw prestressing force steel strand 1, described jack is for being compound punching jack 4, compound punching jack 4 one end are stretch-draw jack 5, the other end is to lock jack 9 for locking the folder that send of prestress wire 1, locking jack 9 is used for promoting ground tackle adaptation board 13 and work anchor intermediate plate 14 is locked the prestress wire 1 that stretch-draw put in place.
Its device installation procedure is: the compound punching jack of installation work anchor 15---work anchor intermediate plate 14---ground tackle adaptation board 13---4---moveable anchor 3---tool anchor clamp 2.
Clip type prestress anchorage cable of the present invention initiatively send the using method of folder tensioning fixation device as follows:
(1) installation work anchor 15, work anchor intermediate plate 14, ground tackle adaptation board 13, compound punching jack 4, moveable anchor 3, tool anchor clamp 2 successively;
(2) connect compound punching jack 4 and the electric oil pump and the hydraulic oil pipeline that drive jack;
(3) open the stretch-draw jack 5 of compound punching jack 4, its stretch-draw piston 6 promotes 3 pairs of steel wire bundles of moveable anchor and carries out stretch-draw, now, tool anchor clamp 2 is with the increasing wedging moveable anchor 3 wedge holes of stretching force, thereby clamping steel wire bundle, work anchor intermediate plate 14 moves toward ground tackle adaptation board 13 directions simultaneously;
(4) when stretching force reaches design load, and stablize after certain hour by designing requirement, folder jack 9 is sent in the locking that starts compound punching jack 4, locking send folder jack piston 10 to promote ground tackle adaptation board 13, ground tackle adaptation board 13 anchoring clamping piece 14 that pushes the work forward moves in the cone wedge hole of work anchor 15, thereby by initiatively wedging locking of steel wire bundle;
(5) tensioning fixation finishes, and unloads moveable anchor 3, compound punching jack 4, ground tackle adaptation board 13.
Implementation process is with reference to accompanying drawing 4, when stretch-draw jack 5 work, its stretch-draw jack piston 6 promotes 3 pairs of prestress wires of moveable anchor 1 and carries out stretch-draw, now, tool anchor clamp 2 is with the increasing wedging instrument anchor chock hole of stretching force, thereby clamp steel strand 1, work anchor intermediate plate 14 moves toward ground tackle adaptation board 13 directions simultaneously, now because work anchor intermediate plate 14 and ground tackle adaptation board 13 leave enough spaces, such as 10mm, so steel wire bundle is not had to effect of contraction, when stretching force reaches design load, and by designing requirement while stablizing certain hour, folder jack 9 is sent in the locking that starts compound punching jack 4, locking send folder jack piston 10 to promote ground tackle adaptation board 13, ground tackle adaptation board 13 anchoring clamping piece 14 that pushes the work forward, in the cone wedge hole of work anchor 15, move, thereby to initiatively wedging locking of steel wire bundle, active wedging due to work anchor intermediate plate 14, greatly reduced the stress loss of prestress anchorage cable in intermediate plate locking process.
Here during prestressed anchor cable stretching without keeping somewhere super stretch-draw surplus, thereby improved the prestressing force utilization rate of steel strand materials.
Ground tackle adaptation board 13 should match with the steel strand radical of anchor cable, the size of diameter.
The selected of compound punching jack 4 should match with the design stretching force of anchor cable.
It should be noted that above-mentioned specific embodiment is exemplary; under above-mentioned instruction of the present invention; those skilled in the art can carry out various improvement and distortion to compound punching jack 4 and ground tackle adaptation board 13 on the basis of above-described embodiment, and these improvement or distortion drop in protection scope of the present invention.
It will be understood by those skilled in the art that specific descriptions are above in order to explain object of the present invention,
Not for limiting the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (3)
1. a clip type prestress anchorage cable initiatively send folder tensioning fixation device, comprise steel strand, steel strand front end is through work anchor and intermediate plate, by work anchor hole count and the definite ground tackle adaptation board of steel strand diameter, be used for locking moveable anchor and the tool anchor clamp of steel strand, and be used for the jack of tension steel strand, it is characterized in that: described jack is for being compound punching jack, compound punching jack one end is stretch-draw jack, the other end is to lock jack for locking the folder that send of steel strand, locking jack is used for promoting ground tackle adaptation board and work anchor intermediate plate is locked the steel strand that stretch-draw puts in place.
2. according to the clip type prestress anchorage cable described in claim 1, initiatively send folder tensioning fixation device, it is characterized in that: described compound punching jack is that electric oil pump drives respectively.
3. clip type prestress anchorage cable initiatively send the using method of folder tensioning fixation device as follows according to claim 1:
(1) installation work anchor, work anchor intermediate plate, ground tackle adaptation board, compound punching jack, moveable anchor, tool anchor clamp successively;
(2) connect compound punching jack and the electric oil pump and the hydraulic oil pipeline that drive jack;
(3) open the stretch-draw jack of compound punching jack, its stretch-draw piston promotes moveable anchor steel wire bundle is carried out to stretch-draw, and now, tool anchor clamp is with the increasing wedging instrument anchor chock hole of stretching force, thereby clamping steel wire bundle, work anchor intermediate plate moves toward ground tackle adaptation board direction simultaneously;
(4) when stretching force reaches design load, and stablize after certain hour by designing requirement, folder jack is sent in the locking that starts compound punching jack, send folder piston to promote ground tackle adaptation board, the ground tackle adaptation board anchoring clamping piece that pushes the work forward moves in the cone wedge hole of work anchor, thereby by initiatively wedging locking of steel wire bundle;
(5) tensioning fixation finishes, and unloads moveable anchor, compound punching jack, ground tackle adaptation board.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134981.9A CN103967008A (en) | 2014-04-04 | 2014-04-04 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410134981.9A CN103967008A (en) | 2014-04-04 | 2014-04-04 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
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| CN103967008A true CN103967008A (en) | 2014-08-06 |
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| CN201410134981.9A Pending CN103967008A (en) | 2014-04-04 | 2014-04-04 | Clip type pre-stress anchor cable active clip feeding and tension locking device and use method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544557A (en) * | 2016-01-08 | 2016-05-04 | 上海强劲地基工程股份有限公司 | T-shaped prestress locking device and method for foundation pit support fish belly sill structure |
| CN107269007A (en) * | 2017-06-11 | 2017-10-20 | 桂林理工大学 | A kind of unbonded prestressing tendon method for stretching for being easy to move back anchor |
| CN107265332A (en) * | 2017-07-14 | 2017-10-20 | 中天合创能源有限责任公司 | A kind of secondary drawing jack and the application method of rising in double loop |
| CN108408636A (en) * | 2018-02-01 | 2018-08-17 | 重庆恒佳工程技术咨询有限公司 | A kind of two-way jacking component of intelligent tensioning |
| CN108425500A (en) * | 2018-02-01 | 2018-08-21 | 重庆恒佳工程技术咨询有限公司 | A kind of non-return system of intelligent tensioning presstressed reinforcing steel |
| CN108468275A (en) * | 2018-02-01 | 2018-08-31 | 重庆恒佳工程技术咨询有限公司 | A kind of prestressing force intelligent tensioning system |
| CN108468276A (en) * | 2018-02-01 | 2018-08-31 | 重庆恒佳工程技术咨询有限公司 | A kind of two-way jack-up system of prestressing force intelligent tensioning |
| CN108487644A (en) * | 2018-02-01 | 2018-09-04 | 重庆恒佳工程技术咨询有限公司 | A kind of prestressed stretch-draw intellectual monitoring control system |
| CN108612313A (en) * | 2018-02-01 | 2018-10-02 | 重庆恒佳工程技术咨询有限公司 | A kind of prestressing force intelligent tensioning autocontrol method |
| CN108625297A (en) * | 2018-06-27 | 2018-10-09 | 中铁十七局集团有限公司 | Clip type prestressed anchor work clip sheet pressing device |
| CN110004926A (en) * | 2019-04-21 | 2019-07-12 | 河北建科唐秦建筑科技有限公司 | A kind of fluid pressure type anchor rod prestress stops loss device |
| CN113152793A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Clamping device for clamping piece type anchorage device |
| CN113640126A (en) * | 2021-10-13 | 2021-11-12 | 中国矿业大学(北京) | Rock-soil prestressed anchor cable or anchor rod tensioning device |
| CN113652965A (en) * | 2021-06-23 | 2021-11-16 | 中铁建工集团山东有限公司 | Stay cable space positioning tensioning construction system and tensioning construction method |
| CN114592514A (en) * | 2022-03-14 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Clamping type anchorage device structure convenient for compensation tensioning |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544557A (en) * | 2016-01-08 | 2016-05-04 | 上海强劲地基工程股份有限公司 | T-shaped prestress locking device and method for foundation pit support fish belly sill structure |
| CN107269007A (en) * | 2017-06-11 | 2017-10-20 | 桂林理工大学 | A kind of unbonded prestressing tendon method for stretching for being easy to move back anchor |
| CN107265332A (en) * | 2017-07-14 | 2017-10-20 | 中天合创能源有限责任公司 | A kind of secondary drawing jack and the application method of rising in double loop |
| CN108612313A (en) * | 2018-02-01 | 2018-10-02 | 重庆恒佳工程技术咨询有限公司 | A kind of prestressing force intelligent tensioning autocontrol method |
| CN108612313B (en) * | 2018-02-01 | 2020-10-16 | 重庆恒佳工程技术咨询有限公司 | Automatic control method for intelligent prestress tensioning |
| CN108468275A (en) * | 2018-02-01 | 2018-08-31 | 重庆恒佳工程技术咨询有限公司 | A kind of prestressing force intelligent tensioning system |
| CN108468276A (en) * | 2018-02-01 | 2018-08-31 | 重庆恒佳工程技术咨询有限公司 | A kind of two-way jack-up system of prestressing force intelligent tensioning |
| CN108487644A (en) * | 2018-02-01 | 2018-09-04 | 重庆恒佳工程技术咨询有限公司 | A kind of prestressed stretch-draw intellectual monitoring control system |
| CN108408636A (en) * | 2018-02-01 | 2018-08-17 | 重庆恒佳工程技术咨询有限公司 | A kind of two-way jacking component of intelligent tensioning |
| CN108425500A (en) * | 2018-02-01 | 2018-08-21 | 重庆恒佳工程技术咨询有限公司 | A kind of non-return system of intelligent tensioning presstressed reinforcing steel |
| CN108625297A (en) * | 2018-06-27 | 2018-10-09 | 中铁十七局集团有限公司 | Clip type prestressed anchor work clip sheet pressing device |
| CN110004926A (en) * | 2019-04-21 | 2019-07-12 | 河北建科唐秦建筑科技有限公司 | A kind of fluid pressure type anchor rod prestress stops loss device |
| CN113152793A (en) * | 2021-04-19 | 2021-07-23 | 南京润华建设集团有限公司 | Clamping device for clamping piece type anchorage device |
| CN113152793B (en) * | 2021-04-19 | 2022-05-17 | 南京润华建设集团有限公司 | Clamping device for clamping piece type anchorage device |
| CN113652965A (en) * | 2021-06-23 | 2021-11-16 | 中铁建工集团山东有限公司 | Stay cable space positioning tensioning construction system and tensioning construction method |
| CN113640126A (en) * | 2021-10-13 | 2021-11-12 | 中国矿业大学(北京) | Rock-soil prestressed anchor cable or anchor rod tensioning device |
| CN113640126B (en) * | 2021-10-13 | 2022-01-11 | 中国矿业大学(北京) | Rock-soil prestressed anchor cable or anchor rod tensioning device |
| CN114592514A (en) * | 2022-03-14 | 2022-06-07 | 深圳市工勘岩土集团有限公司 | Clamping type anchorage device structure convenient for compensation tensioning |
| CN114592514B (en) * | 2022-03-14 | 2024-01-26 | 深圳市工勘岩土集团有限公司 | Clamping type anchorage structure convenient for compensation tensioning |
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Inventor after: Peng Guobin Inventor after: Wan Gengjun Inventor after: Wang Longjun Inventor after: Lu Qiusheng Inventor after: Liu Shaohua Inventor before: Peng Guobin Inventor before: Wan Gengjun Inventor before: Wang Longjun Inventor before: Lu Qiusheng |
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Free format text: CORRECT: INVENTOR; FROM: PENG GUOBIN WAN GENGJUN WANG LONGJUN LU QIUSHENG TO: PENG GUOBIN WAN GENGJUN WANG LONGJUN LU QIUSHENG LIU SHAOHUA |
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Application publication date: 20140806 |