CN103938624A - Quincunx high-strength bored pile and forming method - Google Patents
Quincunx high-strength bored pile and forming method Download PDFInfo
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- CN103938624A CN103938624A CN201410178458.6A CN201410178458A CN103938624A CN 103938624 A CN103938624 A CN 103938624A CN 201410178458 A CN201410178458 A CN 201410178458A CN 103938624 A CN103938624 A CN 103938624A
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Abstract
The invention relates to a quincunx high-strength bored pile and a forming method. The quincunx high-strength bored pile is good in perpendicularity and inclination resistance, has full-load bearing capacity, and comprises a concrete bored pile. The two end faces and the body of the concrete bored pile are formed by connecting a plurality of quincunx petals. One or more concrete and cement columns with the column bodies being of spiral structures are arranged in the polygonal quincunx concrete bored pile. The quincunx high-strength bored pile has the advantages that the quincunx cement bored columns are distributed in a polygonal mode, and due to the fact that a pile foundation is large in bearing area and bearing support points are distributed in a polygonal mode, the pile foundation is good in stability; when the pile body formed by polygonal quincunx petals is placed in a soft foundation, the pile body formed by the quincunx petals with the same included angle acts on the wall of the soft foundation as a plurality of protruding support pillars, and it is guaranteed that the cement pile can not tilt and vertically stands in the soft foundation; one or more concrete and cement columns are placed in the triangular-quincunx cement-stirred high-strength bearing pile body, and the compactness of soil of the wall of the bored pile is increased.
Description
Technical field
The present invention relates to good, the anti-tilt capability of a kind of verticality good, there is quincunx high strength drilled pile and the manufacturing process of supporting capacity at full capacity, belong to cement drilled pile and manufacture field.
Background technology
CN1632233 A, title " the one-tenth pile operation method of bidirectional stirring pile ", a: leveling place; B: bidirectional stirring pile machine location: crane suspention mixer is to referring to fixed pile centering; C: stir: start bidirectional stirring pile machine, make bidirectional stirring pile driver drilling rod along leading truck to incision soil, open and send stock pump, to soil body water-spray type slurry, the blade of the forward and reverse rotation of difference Stirring cement-soil simultaneously on bidirectional stirring pile driver drilling rod; D: bidirectional stirring pile driver drilling rod continues to sink and stirring concrete earth, until projected depth; E: stir when lifting, on bidirectional stirring pile driver drilling rod, the blade of forward and reverse rotation continues stirring concrete earth; F: promote, be stirred to the above 50cm of earth's surface or design elevation, complete the construction of two-way stirring concrete drill hole stake.Its weak point: the one, the stake of background technology moulding is still single-column cement earth pile, single-column cement earth pile in soft foundation because pile foundation area is little, stake surrounding soil property rare soft, be vertically not enough to support single-column cement earth pile by support force and keep vertically, thereby very easily cause the single-column cement earth pile run-off the straight of institute's moulding and scrap; The 2nd, because cement paste in single-column cement earth pile and native stirring are for stirring in the same way, cannot make cannot reach mixing between cement paste and soil evenly, thereby certainly will cause the single-column strength of the cement-soil piles of institute's moulding low.
Summary of the invention
Purpose of design: avoid the weak point in background technology, design good, the anti-tilt capability of a kind of verticality good, there is quincunx high strength drilled pile and the manufacturing process of supporting capacity at full capacity.
Design scheme: in order to realize above-mentioned purpose of design.1, the both ends of the surface of concrete drill hole stake and pile body, by the connected design forming of many plum blossom petals, are one of technical characterictics of the present invention.The object of design is like this: because the pile foundation (stake end face) of the application's concrete drill hole stake is polygonal quincunx, many overall structures that plum blossom petal forms that pile body is equated mutually by angle, not only the supporting surface of pile foundation large, be polygonal stable support, and pile body in weak soil is that the polygonal legs of the tripod supports mutually due to what form, thereby effectively solve the defect that single-column cement earth pile very easily tilts.2, multi-drill rod bit is by the control of controller, makes the design of rotating with mutually opposite direction between multiaxis drilling rod, is two of technical characterictic of the present invention.The object of design is like this: the object of design is like this: distribute because multiaxis drilling rod is polygonal, and overlapped between the boring aperture radius between the multiaxis drilling rod that polygonal distributes, form the polygonal quincuncial pile hole that many lobes are interconnected, the agitation pile of the polygonal quincuncial pile hole formed thereby that these many lobes are interconnected, between many lobes pile body in its polygonal plum blossom pile foundation, shape becomes the support at Coarse angle, improve the stability of pile foundation, and many lobes polygonal plum blossom pile body has greatly increased the contact area between pile body and soil layer, not only improve the supporting capacity of stake, and strengthen the stability of pile body.3, having between multi-turn lug boss on many plum blossom concrete drill hole stake pile bodies is the design that spacing distributes, and is three of technical characterictic of the present invention.The object of design is like this: the spacing at many plum blossom concrete drill hole stake pile bodies is provided with hoop projection, both just as the reinforcing rib of pile body, again just as a circle brace table, not only increase the friction factor between pile body and ground, effectively carry the bearing capacity of establishing pile body, and make the bearing strength of stake obtain effectively improving.4, the concrete cement stake spiral that one or more pile body is helicoidal structure is pressed into the design in polygonal plum blossom Soil-cement high strength carrying pile body, is four of technical characterictic of the present invention.The object of design is like this: because the last radicle of concrete cement stake of helicoidal structure is equipped with point, this pile top is along with logical enough the piercing in concrete of rotation of stake, concrete is pushed to weak soil, not only strengthen concrete compactness, and concrete extruding forces the soil property compactness of concrete drill hole pile lining to increase, the bearing capacity that has greatly strengthened weak soil to drilled pile, and then increased the bearing capacity of drilled pile.
Technical scheme 1: a kind of quincunx high strength drilled pile, comprise concrete drill hole stake, the both ends of the surface of described concrete drill hole stake and pile body are connected and are formed by many plum blossom petals, and the concrete cement stake that one or more pile body is helicoidal structure is positioned at polygonal quincunx boring concrete pile body.
Technical scheme 2: a kind of manufacturing process of quincunx high strength drilled pile, (one) preparatory stage: (1) stake position setting-out: survey crew is squeezed into severely-weathered layer as guide pile using polygonal quincunx steel pipe; (2) by fixing to the steel cofferdam direction peg of lifting i iron welding and guide pile layering connection, guarantee that guide housing position is accurate; (3) the polygonal quincunx steel casing of inserted to play, casing submergence depth is through covering layer; (4) inserted to play steel sheet-pile cofferdam, until through covering layer; (2) in the boring stage: (1) installs multiple-drill press, make multiaxis drilling rod center superposition, and its horizontal movement and bank error are pressed code requirement adjustment; (2), during with multiaxis the impact drilling, when the concrete setting that should pour on adjacent holes position has also reached some strength, just can spud in; (3) three axle boring procedures adopt normal circulation slewing drilling machine to enter construction technology, at clay layer, suitably throw less earth, by creeping into pulping voluntarily, strengthen concentration of hydraulic mixture Gu Bi at sandy soils, and multiaxis rate of penetration adapts with mud discharge rate all the time; (4) in polygonal plum blossom hole, remain the hydrostatic pressure of 0.2kg/cm2, in polygonal casing, water level is all the time higher than reservoir level, while meeting scall, suitably increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduce rotating speed and the pressure of the drill to meet quality control on construction requirement simultaneously; (5) drilling process is left and taken slag specimen at any time, and every meter is no less than 1 group, and within the scope of design elevation 1.0～1.5m, every 30cm stays 1 group, and every pile slag specimen is no less than 3 groups; (3) the clear hole stage: after (1) boring finishes, multi spindle drilling head is carried to the 0.2-O.3m place at the bottom of hole, made it to dally, then by the boring mud sucking-off remaining at the bottom of hole; (3) after polygonal quincunx reinforcing cage sinks to fixing, again recheck hole depth and sediment thickness, if sediment exceeds standard, with airduct attached in conduit clear hole again, until all meet designing requirement and technological standards.(4) concrete perfusion: after clear complete hole, prefabricated polygonal quincunx reinforcing cage is vertically hung onto in hole, behind location, to be fixed, then use tremie concrete, when perfusion, concrete does not interrupt, otherwise be prone to pile breaking phenomenon, concrete continuous be filled into top, polygonal quincunx hole and etc. its solidify and obtain quincunx high strength drilled pile; (5) piling: the concrete cement stake that is helicoidal structure by one or more pile body rotation is pressed in polygonal plum blossom Soil-cement high strength carrying pile body and obtains polygonal quincunx high strength drilled pile.
The present invention compared with background technology, the one, the blossom type cement drilled pile of polygonal distribution is because the loaded area of pile foundation is large, bearing support point is polygonal and distributes, thereby the good stability of pile foundation; The 2nd, the pile body forming when polygonal plum blossom petal is during in soft foundation, and the many plum blossom petal pile bodies that its angle equates act on soft foundation wall just as the protruding fore-set of multicolumn, have guaranteed that cement earth pile does not tilt, stands vertically in soft foundation; The 3rd, one or more concrete cement stake is positioned to triangle plum blossom Soil-cement high strength carrying pile body, the compactness of pile lining soil property of not only making to hole increases, and greatly strengthened the bearing capacity of soil property to drilled pile, and then increase the bearing capacity of drilled pile.
Brief description of the drawings
Fig. 1 is the perspective view of quincunx high strength drilled pile.
Fig. 2 is the perspective view with the quincunx high strength drilled pile of annular relief.
Fig. 3 is one of plan structure schematic diagram of quincunx high strength drilled pile.
Fig. 4 be quincunx high strength drilled pile plan structure schematic diagram two.
Fig. 5 be quincunx high strength drilled pile plan structure schematic diagram three.
Fig. 6 be quincunx high strength drilled pile plan structure schematic diagram four.
Fig. 7 be quincunx high strength drilled pile plan structure schematic diagram four.
Detailed description of the invention
Embodiment 1: with reference to accompanying drawing 1.A kind of quincunx high strength drilled pile, comprise concrete drill hole stake 1, the both ends of the surface of described concrete drill hole stake 1 and pile body 2 are connected and are formed by many plum blossom petals, and the concrete cement stake 5 that one or more pile body is helicoidal structure is positioned at polygonal quincunx boring concrete pile body.This concrete tubular pile 3 can be both the real core stake of prefabricated cement, also can prefabricated hollow core concrete stake, and can also be with replacements such as the high-strength plastic stock column of various shapes, steel column, steel pipe, section bars.Angle between many plum blossom petals equates or is unequal.It is quincunx that reinforcing cage 3 in concrete drill hole stake 1 is polygonal.
Embodiment 3: with reference to accompanying drawing 2-4.A kind of polygonal plum blossom Soil-cement high strength bearing peg, comprise cement mixing method 1, the both ends of the surface of described cement mixing method 1 and pile body 2 are connected and are formed by many plum blossom petals, and many concrete cement stakes (pile tube) 5 are positioned at polygonal plum blossom Soil-cement high strength carrying pile body.These many concrete tubular piles 5 can be both the real core stakes of prefabricated cement, also can prefabricated hollow core concrete stakes, and can also be with replacements such as the high-strength plastic stock column of various shapes, steel column, steel pipe, section bars.Angle between three plum blossom petals equates or is unequal.Many plum blossom concrete drill holes stake 1 pile body 2 has multi-turn lug boss 4.Having on many plum blossom concrete drill holes stake 1 pile body 2 is spacing between multi-turn lug boss 4 and distributes.
Embodiment 3: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 4.Many plum blossom cement mixing methods 1 are arranged in double dislocation or many misarrangements position Soil-cement pilework side by side.
Embodiment 4: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 5.Many plum blossom cement mixing methods 1 are arranged in dihedral Soil-cement pilework side by side.
Embodiment 5: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 6.Many plum blossom cement mixing methods 1 are arranged in T-shaped Soil-cement pilework side by side.
Embodiment 6: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 7.Many plum blossom cement mixing methods 1 are arranged in cross Soil-cement pilework side by side.
Embodiment 7: on the basis of above-described embodiment, a kind of manufacturing process of quincunx high strength drilled pile, (one) preparatory stage: (1) stake position setting-out: survey crew is squeezed into severely-weathered layer as guide pile using polygonal quincunx steel pipe; (2) by fixing to the steel cofferdam direction peg of lifting i iron welding and guide pile layering connection, guarantee that guide housing position is accurate; (3) the polygonal quincunx steel casing of inserted to play, casing submergence depth is through covering layer; The key of boring success or failure is to prevent hole wall collapse.In the time that boring is darker, the hole wall soil below groundwater table can cave in, even occur quicksand phenomenon under hydrostatic pressure in hole.If can keep the head higher than groundwater table in boring, increase hydrostatic pressure in hole, can be hole wall, prevent the hole that collapses.Casing, except playing this effect, has isolation surface water, protection ground, aperture, spud pile hole site and drill bit guide effect etc. with fashion.Make the material of casing and have three kinds, wood, steel, steel concrete.Casing requires sturdy and durable, water-tight, its internal diameter should be larger than bore diameter (the approximately large 20cm of rotary drilling, diving bores, impacts or the approximately large 40cm of cone is grabbed in punching), approximately 2 ~ 3m of every joint length.General Common Steels casing.(4) inserted to play steel sheet-pile cofferdam, until through covering layer; (5) drilling slurry is made up of water, clay (swell soil) and additive, there is floating outstanding boring mud, cooling drill bit, lubricated drilling tool, increase hydrostatic pressure, and form mud skin at hole wall, cut off the inside and outside seepage flow in hole, the effect in hole prevents from collapsing, the mud of the drilling slurry of modulation and process circularly purifying, should determine slip consistency according to boring method and strata condition, and slip consistency should be looked formation variation or the motor-driven grasp of operation requirements, mud is too rare, and deslagging ability is little, retaining wall weak effect; Mud is too thick can weaken drill bit impact function, reduces rate of penetration.(2) in the boring stage: (1) installs multiple-drill press, make multiaxis drilling rod center superposition, and its horizontal movement and bank error are pressed code requirement adjustment; (2), during with multiaxis the impact drilling, when the concrete setting that should pour on adjacent holes position has also reached some strength, just can spud in; (3) multi-spindle drilling process adopts normal circulation slewing drilling machine to enter construction technology, at clay layer, suitably throws less earth, by creeping into pulping voluntarily, strengthens concentration of hydraulic mixture Gu Bi at sandy soils, and multiaxis rate of penetration adapts with mud discharge rate all the time; (4) in polygonal plum blossom hole, remain the hydrostatic pressure of 0.2kg/cm2, in polygonal casing, water level is all the time higher than reservoir level, while meeting scall, suitably increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduce rotating speed and the pressure of the drill to meet quality control on construction requirement simultaneously; (5) drilling process is left and taken slag specimen at any time, and every meter is no less than 1 group, and within the scope of design elevation 1.0～1.5m, every 30cm stays 1 group, and every pile slag specimen is no less than 3 groups; (3) the clear hole stage: the degree of depth, diameter, position and the hole shape of boring is directly connected to pile quality and the right and wrong song of pile body., in boring procedure, observation is supervised closely, reach after the designing requirement degree of depth in boring, reply hole depth hole, Kong Wei, hole shape, aperture etc. check for this reason.Check while meeting designing requirement completely in whole hole, should carry out immediately cleaning at the bottom of hole, avoid every time long so that mud sediment, cause borehole collapse.In the time that hole wall easily caves in, require sediment thickness before pouring underwater concrete to be not more than 30cm for friction pile; In the time that hole wall is difficult for caving in, be not more than 20cm.For stanchion, require at jetting or penetrate before wind, sediment thickness is not more than 5cm.Clear hole method is the rig difference that uses and flexible Application.Conventionally can adopt direct circulation rotary rig, anti-circulation rotating machine vacuum-cleaner dredge and take out the clear holes such as slag cylinder.Wherein, with the clear hole of suction dredge, equipment needed thereby is few, easy to operate, and clear hole is also more thorough, but should use cautiously in unstable soil layer.Its principle is exactly to be blown in suction dredge pipeline body refuse is blown out with the pressure-air that compressor produces.Therefore: after (1) boring finishes, multi spindle drilling head is carried to the 0.2-O.3m place at the bottom of hole, made it to dally, then by the boring mud sucking-off remaining at the bottom of hole; (3) after polygonal quincunx reinforcing cage sinks to fixing, again recheck hole depth and sediment thickness, if sediment exceeds standard, with airduct attached in conduit clear hole again, until all meet designing requirement and technological standards; (4) pouring underwater concrete: after clear complete hole, prefabricated polygonal quincunx reinforcing cage is vertically hung onto in hole, behind location, to be fixed, then use tremie concrete, due to intrinsic motor in head vibrator on conduit lower end wall, therefore concrete edge perfusion in the time of perfusion, limit vibration, makes concrete continuous in vibration, be filled into top, polygonal quincunx hole, when perfusion, do not interrupt, otherwise be prone to pile breaking phenomenon; (5) piling: the concrete cement stake that is helicoidal structure by one or more pile body 5 rotations are pressed in polygonal plum blossom Soil-cement high strength carrying pile body and obtain polygonal quincunx high strength drilled pile.
It is to be understood that: although above-described embodiment is to the mentality of designing of the present invention detailed text description of contrasting; but these text descriptions; just the simple text of mentality of designing of the present invention is described; instead of restriction to mentality of designing of the present invention; any combination, increase or amendment that does not exceed mentality of designing of the present invention, all falls within the scope of protection of the present invention.
Claims (10)
1. a quincunx high strength drilled pile, comprise concrete drill hole stake (1), it is characterized in that: the both ends of the surface of described concrete drill hole stake (1) and pile body (2) are connected and are formed by many plum blossom petals, and the concrete cement stake (5) that one or more pile body is helicoidal structure is positioned at polygonal quincunx boring concrete pile body.
2. quincunx high strength drilled pile according to claim 1, is characterized in that: the angle between many plum blossom petals equates or be unequal.
3. quincunx high strength drilled pile according to claim 1, is characterized in that: many plum blossom concrete drill holes stake (1) pile body (2) has multi-turn lug boss (4).
4. quincunx high strength drilled pile according to claim 3, is characterized in that: be positioned at having on many plum blossom concrete drill holes stake (1) pile body (2) and between multi-turn lug boss (4), be spacing and distribute.
5. quincunx high strength drilled pile according to claim 1, is characterized in that: it is quincunx that the reinforcing cage (3) in concrete drill hole stake (1) is polygonal.
6. quincunx high strength drilled pile according to claim 1, is characterized in that: the many quincunx high strength drilled piles of plum blossom (1) are arranged in the quincunx high strength drilled pile of double dislocation or many misarrangements position structure side by side.
7. quincunx high strength drilled pile according to claim 1, is characterized in that: the many quincunx high strength drilled piles of plum blossom (1) are arranged in the quincunx high strength drilled pile of dihedral structure side by side.
8. quincunx high strength drilled pile according to claim 1, is characterized in that: the many quincunx high strength drilled piles of plum blossom (1) are arranged in T-shaped quincunx high strength drilled pile structure side by side.
9. quincunx high strength drilled pile according to claim 1, is characterized in that: the many quincunx high strength drilled piles of plum blossom (1) are arranged in the quincunx high strength drilled pile of cross structure side by side.
10. a manufacturing process for quincunx high strength drilled pile, is characterized in that:
(1) preparatory stage
(1) stake position setting-out: survey crew is squeezed into severely-weathered layer as guide pile using polygonal quincunx steel pipe;
(2) by fixing to the steel cofferdam direction peg of lifting i iron welding and guide pile layering connection, guarantee that guide housing position is accurate;
(3) the polygonal quincunx steel casing of inserted to play, casing submergence depth is through covering layer;
(4) inserted to play steel sheet-pile cofferdam, until through covering layer;
(2) the boring stage
(1) install multiple-drill press, make multiaxis drilling rod center superposition, its horizontal movement and bank error are pressed code requirement adjustment;
(2), during with multiaxis the impact drilling, when the concrete setting that should pour on adjacent holes position has also reached some strength, just can spud in;
(3) three axle boring procedures adopt normal circulation slewing drilling machine to enter construction technology, at clay layer, suitably throw less earth, by creeping into pulping voluntarily, strengthen concentration of hydraulic mixture Gu Bi at sandy soils, and multiaxis rate of penetration adapts with mud discharge rate all the time;
(4) in polygonal plum blossom hole, remain the hydrostatic pressure of 0.2kg/cm2, in polygonal casing, water level is all the time higher than reservoir level, while meeting scall, suitably increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduce rotating speed and the pressure of the drill to meet quality control on construction requirement simultaneously;
(5) drilling process is left and taken slag specimen at any time, and every meter is no less than 1 group, and within the scope of design elevation 1.0～1.5m, every 30cm stays 1 group, and every pile slag specimen is no less than 3 groups;
(3) the clear hole stage
(1) after boring finishes, multi spindle drilling head is carried to the 0.2-0.3m place at the bottom of hole, made it to dally, then by the boring mud sucking-off remaining at the bottom of hole;
(3) after polygonal quincunx reinforcing cage sinks to fixing, again recheck hole depth and sediment thickness, if sediment exceeds standard, with airduct attached in conduit clear hole again, until all meet designing requirement and technological standards;
(4) concrete perfusion:
After clear complete hole, prefabricated polygonal quincunx reinforcing cage is vertically hung onto in hole, behind location, to be fixed, then use tremie concrete, when perfusion, concrete does not interrupt, otherwise be prone to pile breaking phenomenon, concrete continuous be filled into top, polygonal quincunx hole and etc. its solidify and obtain quincunx high strength drilled pile;
(5) piling:
The concrete cement stake that is helicoidal structure by one or more pile body rotation is pressed in polygonal plum blossom Soil-cement high strength carrying pile body and obtains polygonal quincunx high strength drilled pile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410178458.6A CN103938624B (en) | 2014-04-30 | 2014-04-30 | Quincunx high strength drilled pile and manufacturing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410178458.6A CN103938624B (en) | 2014-04-30 | 2014-04-30 | Quincunx high strength drilled pile and manufacturing process |
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| CN103938624A true CN103938624A (en) | 2014-07-23 |
| CN103938624B CN103938624B (en) | 2016-03-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126264A (en) * | 1994-12-26 | 1996-07-10 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| JP2004270440A (en) * | 2003-02-17 | 2004-09-30 | Mitani Sekisan Co Ltd | Construction method for foundation pile, and prefabricated pile |
| CN1542235A (en) * | 2003-04-29 | 2004-11-03 | 天津市水利科学研究所 | Strong-core deep injection stirring pile-making method and special drill bit therefor |
| CN203846488U (en) * | 2014-04-30 | 2014-09-24 | 杭州小尔科技有限公司 | Plum-blossom-shaped high-strength bored pile |
-
2014
- 2014-04-30 CN CN201410178458.6A patent/CN103938624B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1126264A (en) * | 1994-12-26 | 1996-07-10 | 石寅生 | Making method for non-annular borehole cast-in-place pile |
| CN1208102A (en) * | 1998-07-31 | 1999-02-17 | 叶长生 | Deposited pile and its construction |
| JP2004270440A (en) * | 2003-02-17 | 2004-09-30 | Mitani Sekisan Co Ltd | Construction method for foundation pile, and prefabricated pile |
| JP4496553B2 (en) * | 2003-02-17 | 2010-07-07 | 三谷セキサン株式会社 | Construction method of foundation pile and ready-made pile |
| CN1542235A (en) * | 2003-04-29 | 2004-11-03 | 天津市水利科学研究所 | Strong-core deep injection stirring pile-making method and special drill bit therefor |
| CN203846488U (en) * | 2014-04-30 | 2014-09-24 | 杭州小尔科技有限公司 | Plum-blossom-shaped high-strength bored pile |
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| CN103938624B (en) | 2016-03-30 |
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Effective date of registration: 20200117 Address after: Kaohsiung streets Pu Beilun District 315801 in Zhejiang province Ningbo City No. 18 Patentee after: Zhou Zhaodi Address before: Yuhang street Nanyuan District Henan Dai Road Hangzhou city Zhejiang province 311100 No. 46 Patentee before: Hangzhou Xiaoer Technology Co.,Ltd. |