CN103938624B - Quincunx high strength drilled pile and manufacturing process - Google Patents
Quincunx high strength drilled pile and manufacturing process Download PDFInfo
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- CN103938624B CN103938624B CN201410178458.6A CN201410178458A CN103938624B CN 103938624 B CN103938624 B CN 103938624B CN 201410178458 A CN201410178458 A CN 201410178458A CN 103938624 B CN103938624 B CN 103938624B
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Abstract
The present invention relates to good, the anti-tilt capability of a kind of verticality is good, have supporting capacity at full capacity quincunx high strength drilled pile and manufacturing process, comprise concrete drill hole stake, the both ends of the surface of described concrete drill hole stake and pile body are connected by many plum blossom petals and form, and one or more pile body is that the concrete cement stake of helicoidal structure is positioned at polygonal quincunx boring concrete pile body.Advantage: one is that the blossom type cement drilled pile of polygonal distribution is because the loaded area of pile foundation is large, bearing support point be that polygonal distributes, the thus good stability of pile foundation; Two is that the many plum blossom petal pile bodies that its angle is equal act on soft foundation wall just as the protruding fore-set of multicolumn, ensure that cement earth pile does not tilt in soft foundation, stand vertically when the pile body of polygonal plum blossom petal formation is in soft foundation; Three is one or more concrete cement stake is positioned at triangle plum blossom Soil-cement high strength carrying pile body, and the compactness of boring pile lining soil property is increased.
Description
Technical field
The present invention relates to good, the anti-tilt capability of a kind of verticality is good, have supporting capacity at full capacity quincunx high strength drilled pile and manufacturing process, belong to cement drilled pile and manufacture field.
Background technology
CN1632233A, title " the one-tenth pile operation method of bidirectional stirring pile ", a: leveling place; B: bidirectional stirring pile machine is located: crane suspention mixer is to referring to fixed pile and centering; C: stir: start bidirectional stirring pile machine, makes bidirectional stirring pile driver drilling rod native along leading truck to incision, opens and send stock pump, to soil body water-spray type slurry, and the blade Stirring cement-soil simultaneously of forward and reverse rotation respectively 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 while promoting, the blade of forward and reverse rotation on bidirectional stirring pile driver drilling rod continues stirring concrete earth; F: promote, be stirred to earth's surface or the above 50cm of design elevation, complete the construction of two-way stirring concrete drill hole stake.Its weak point: one be the shaping stake of background technology is still single-column cement earth pile, the single-column cement earth pile being in soft foundation because pile foundation area is little, stake surrounding soil property is rare softly, vertical is not enough to support single-column cement earth pile by support force and keeps vertically, thus very easily causing shaping single-column cement earth pile run-off the straight and scrapping; Two is because cement paste in single-column cement earth pile and native stirring are for stir in the same way, mixing between cement paste with soil cannot be made cannot to reach even, shaping single-column strength of the cement-soil piles thus certainly will be caused low.
Summary of the invention
Purpose of design: avoid the weak point in background technology, designs good, the anti-tilt capability of a kind of verticality is good, have supporting capacity at full capacity quincunx high strength drilled pile and manufacturing process.
Design scheme: in order to realize above-mentioned purpose of design.1, the both ends of the surface of concrete drill hole stake 1 and pile body to be connected the design formed by many plum blossom petals, are one of technical characteristics of the present invention.The object of such design is: the overall structure that the pile foundation (stake end face) due to the concrete drill hole stake of the application is made up of the many plum blossom petals that angle is mutually equal in polygonal quincunx, pile body, not only the supporting surface of pile foundation large, in polygonal stable support, and the pile body be in weak soil is that the polygonal legs of the tripod supports mutually due to what formed, thus efficiently solves the defect that single-column cement earth pile very easily tilts.2, multi-drill rod bit is by the control of controller, and making with the design that mutually opposite direction is rotated between multiaxis drilling rod, is technical characteristic two of the present invention.The object of such design is: because multiaxis drilling rod is polygonal distribution, and it is overlapped between the boring aperture radius between the multiaxis drilling rod of polygonal distribution, form the polygonal plum blossom stake holes that many lobes are interconnected, the agitation pile that the polygonal plum blossom stake holes that this many lobe is interconnected is formed thereby, 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 greatly increases the contact area between pile body and soil layer, not only increase the supporting capacity of stake, and enhance the stability of pile body.3, the design having the distribution in spacing between multi-turn lug boss on many plum blossom concrete drill hole stake pile bodies is technical characteristic three of the present invention.The object of such design is: be provided with hoop projection in the spacing of many plum blossom concrete drill hole stake pile bodies, 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 establishing pile body, and the bearing strength of stake is obtained effectively improve.4, one or more pile body is the design in the concrete cement stake spiral press-in polygonal plum blossom Soil-cement high strength carrying pile body of helicoidal structure, is technical characteristic four of the present invention.The object of such design is: because the last radicle of concrete cement stake of helicoidal structure is equipped with point, this pile top enough pierces in concrete along with the rotary of stake, by concrete extrusion weak soil, not only increase concrete compactness, and concrete extruding forces the soil property compactness of concrete drill hole pile lining to increase, with significantly enhancing weak soil to the bearing capacity of drilled pile, and then increase 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 by many plum blossom petals and form, and one or more pile body is that the concrete cement stake of 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: polygonal quincunx steel pipe is squeezed into severely-weathered layer as guide pile by survey crew; (2) the steel cofferdam direction peg of lifting i iron welding and guide pile layering are connect fixing, guarantee that guide housing position is accurate; (3) the polygonal quincunx steel pile casting of inserted to play, casing submergence depth is through covering layer; (4) inserted to play steel sheet-pile cofferdam, till passing covering layer; (2) drilling stage: (1) installs multiple-drill press, makes multiaxis drilling rod center superposition, and its horizontal movement and bank error press code requirement adjustment; (2), time with multi-axial Impact boring, the concrete setting should poured on adjacent holes position also, when having reached some strength, just can be spudded in; (3) three axle boring procedures adopt normal circulation slewing drilling machine to enter construction technology, and at clay layer, suitably throwing earth less, by creeping into pulping voluntarily, then strengthening concentration of hydraulic mixture Gu Bi at sandy soils, multiaxis rate of penetration adapts with mud discharge rate all the time; (4) hydrostatic pressure of 0.2kg/cm2 is remained in polygonal plum blossom hole, in polygonal casing, water level is all the time higher than reservoir level, when meeting scall, suitable increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduction rotating speed and the pressure of the drill are to meet quality control on construction requirement simultaneously; (5) drilling process leaves and takes 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) in the clear hole stage: after (1) boring terminates, multi spindle drilling head is carried to apart from the 0.2-O.3m place at the bottom of hole, make it idle running, then will remain in the boring mud sucking-off at the bottom of hole; (3) after polygonal quincunx reinforcing cage sinks to fixing, again hole depth and sediment thickness is rechecked, 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, to be fixed behind location, then tremie concrete is used, during perfusion, concrete does not interrupt, otherwise easily occur pile breaking phenomenon, concrete continuous is filled into polygonal top, quincunx hole and waits it solidify and obtain quincunx high strength drilled pile; (5) piling: be that the concrete cement stake of helicoidal structure rotates in press-in polygonal plum blossom Soil-cement high strength carrying pile body and namely obtains polygonal quincunx high strength drilled pile by one or more pile body.
The present invention is compared with background technology, and one is that the blossom type cement drilled pile of polygonal distribution is because the loaded area of pile foundation is large, bearing support point be that polygonal distributes, the thus good stability of pile foundation; Two is that the many plum blossom petal pile bodies that its angle is equal act on soft foundation wall just as the protruding fore-set of multicolumn, ensure that cement earth pile does not tilt in soft foundation, stand vertically when the pile body of polygonal plum blossom petal formation is in soft foundation; Three is one or more concrete cement stake is positioned at triangle plum blossom Soil-cement high strength carrying pile body, the compactness of boring pile lining soil property is not only made to increase, and significantly enhance the bearing capacity of soil property to drilled pile, and then increase the bearing capacity of drilled pile.
Accompanying drawing explanation
Fig. 1 is the perspective view of quincunx high strength drilled pile.
Fig. 2 is the perspective view of the quincunx high strength drilled pile with annular relief.
Fig. 3 is one of plan structure schematic diagram of quincunx high strength drilled pile.
Fig. 4 is the plan structure schematic diagram two of quincunx high strength drilled pile.
Fig. 5 is the plan structure schematic diagram three of quincunx high strength drilled pile.
Fig. 6 is the plan structure schematic diagram four of quincunx high strength drilled pile.
Fig. 7 is the plan structure schematic diagram four of quincunx high strength drilled pile.
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 by many plum blossom petals and form, and one or more pile body is that the concrete cement stake 5 of helicoidal structure is positioned at polygonal quincunx boring concrete pile body.This concrete tubular pile 5 both can be the real core stake of pre-cast concrete, also can prefabricated hollow core concrete stake, can also with the replacement such as high-strength plastic stock column, steel column, steel pipe, section bar of various shape.Angle between many plum blossom petals is equal or unequal.Reinforcing cage 3 in concrete drill hole stake 1 is quincunx in 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 by many plum blossom petals and form, 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 both can be the real core stakes of pre-cast concrete, also can prefabricated hollow core concrete stake, can also with the replacement such as high-strength plastic stock column, steel column, steel pipe, section bar of various shape.Angle between three plum blossom petals is equal or unequal.Many plum blossom concrete drill holes stake 1 pile body 2 has multi-turn lug boss 4.Having between multi-turn lug boss 4 on many plum blossom concrete drill holes stake 1 pile body 2 distributes in spacing.
Embodiment 3: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 4.Many plum blossom cement mixing method 1 arranged in parallel become double dislocation or many misarrangements position Soil-cement pilework.
Embodiment 4: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 5.Many plum blossom cement mixing method 1 arranged in parallel become dihedral cement mixing method structure.
Embodiment 5: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 6.Many plum blossom cement mixing method 1 arranged in parallel become T-shaped Soil-cement pilework.
Embodiment 6: on the basis of above-described embodiment 1 or 2, with reference to accompanying drawing 7.Many plum blossom cement mixing method 1 arranged in parallel across Soil-cement pileworks.
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: polygonal quincunx steel pipe is squeezed into severely-weathered layer as guide pile by survey crew; (2) the steel cofferdam direction peg of lifting i iron welding and guide pile layering are connect fixing, guarantee that guide housing position is accurate; (3) the polygonal quincunx steel pile casting of inserted to play, casing submergence depth is through covering layer; The key of boring success or failure prevents hole wall collapse.When holing darker, the hole wall soil below groundwater table can cave in, even quicksand phenomenon occur under hydrostatic pressure in hole.If the head higher than groundwater table can be kept 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.The material making casing has wood, steel, steel concrete three kinds.Casing requires sturdy and durable, water-tight, and its internal diameter should larger than bore diameter (the about large 20cm of rotary drilling, diving bores, impact or the about large 40cm of cone is grabbed in punching), often saves length about 2 ~ 3m.General Common Steels casing.(4) inserted to play steel sheet-pile cofferdam, till passing covering layer; (5) drilling slurry is made up of water, clay (swell soil) and additive, there is floating outstanding boring mud, cooling drill bit, lubrication drilling tool, increase hydrostatic pressure, and form mud skin at hole wall, cut off seepage flow inside and outside hole, prevent from collapsing the effect in hole, the drilling slurry of modulation and the mud through circularly purifying, should determine slip consistency according to boring method and strata condition, slip consistency should look 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) drilling stage: (1) installs multiple-drill press, makes multiaxis drilling rod center superposition, and its horizontal movement and bank error press code requirement adjustment; (2), time with multi-axial Impact boring, the concrete setting should poured on adjacent holes position also, when having reached some strength, just can be spudded in; (3) multi-spindle drilling process adopts normal circulation slewing drilling machine to enter construction technology, and at clay layer, suitably throwing earth less, by creeping into pulping voluntarily, then strengthening concentration of hydraulic mixture Gu Bi at sandy soils, multiaxis rate of penetration adapts with mud discharge rate all the time; (4) hydrostatic pressure of 0.2kg/cm2 is remained in polygonal plum blossom hole, in polygonal casing, water level is all the time higher than reservoir level, when meeting scall, suitable increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduction rotating speed and the pressure of the drill are to meet quality control on construction requirement simultaneously; (5) drilling process leaves and takes 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 of boring, diameter, position and hole shape are directly connected to pile quality and the right and wrong song of pile body.For this reason, except in boring procedure, observation is supervised closely, after boring reaches the designing requirement degree of depth, reply hole depth hole, Kong Wei, hole shape, aperture etc. check.Check in whole hole when meeting designing requirement completely, cleaning at the bottom of hole should be carried out immediately, avoid every time long so that mud sediment, cause borehole collapse.For friction pile when hole wall easily caves in, require that sediment thickness is not more than 30cm before pouring underwater concrete; When hole wall not easily caves in, be not more than 20cm.For stanchion, require that sediment thickness is not more than 5cm at jetting or before penetrating wind.Clear hole method is the rig difference and flexible Application that use.Usually can adopt direct circulation rotary rig, reacting cycle whirler 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 comparatively thorough, but should use cautiously in unstable soil layer.Its principle is exactly be blown in suction dredge pipeline body refuse to blow out with the pressure-air that compressor produces.Therefore: after (1) boring terminates, multi spindle drilling head is carried to apart from the 0.2-O.3m place at the bottom of hole, make it idle running, then will remain in the boring mud sucking-off at the bottom of hole; (3) after polygonal quincunx reinforcing cage sinks to fixing, again hole depth and sediment thickness is rechecked, 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, to be fixed behind location, then tremie concrete is used, due to motor in head vibrator intrinsic on conduit lower end wall, the therefore concrete edge perfusion when pouring into, limit vibration, makes concrete continuous in vibration, be filled into top, polygonal quincunx hole, do not interrupt during perfusion, otherwise easily occur pile breaking phenomenon; (5) piling: be that the concrete cement stake 5 of helicoidal structure rotates in press-in polygonal plum blossom Soil-cement high strength carrying pile body and namely obtains polygonal quincunx high strength drilled pile by one or more pile body.
It is to be understood that: although above-described embodiment to be contrasted detailed text description to mentality of designing of the present invention; but these text descriptions; just the simple text of mentality of designing of the present invention is described; instead of the restriction to mentality of designing of the present invention; any do not exceed mentality of designing of the present invention combination, increase or amendment, all fall within the scope of protection of the present invention.
Claims (10)
1. a manufacturing process for quincunx high strength drilled pile, is characterized in that:
(1) preparatory stage
(1) stake position setting-out: polygonal quincunx steel pipe is squeezed into severely-weathered layer as guide pile by survey crew;
(2) the steel cofferdam direction peg of lifting i iron welding and guide pile layering are connect fixing, guarantee that guide housing position is accurate;
(3) the polygonal quincunx steel pile casting of inserted to play, casing submergence depth is through covering layer;
(4) inserted to play steel sheet-pile cofferdam, till passing covering layer;
(2) drilling stage
(1) install multiple-drill press, make multiaxis drilling rod center superposition, its horizontal movement and bank error press code requirement adjustment;
(2), time with multi-axial Impact boring, the concrete setting should poured on adjacent holes position also, when having reached some strength, just can be spudded in;
(3) three axle boring procedures adopt normal circulation slewing drilling machine to enter construction technology, and at clay layer, suitably throwing earth less, by creeping into pulping voluntarily, then strengthening concentration of hydraulic mixture Gu Bi at sandy soils, multiaxis rate of penetration adapts with mud discharge rate all the time;
(4) hydrostatic pressure of 0.2kg/cm2 is remained in polygonal plum blossom hole, in polygonal casing, water level is all the time higher than reservoir level, when meeting scall, suitable increase specific gravity of mud and denseness, alleviate as far as possible and rush the impact of liquid on hole wall, reduction rotating speed and the pressure of the drill are to meet quality control on construction requirement simultaneously;
(5) drilling process leaves and takes 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 terminates, multi spindle drilling head is carried to apart from the 0.2-O.3m place at the bottom of hole, make it idle running, then will remain in the boring mud sucking-off at the bottom of hole;
(3) after polygonal quincunx reinforcing cage sinks to fixing, again hole depth and sediment thickness is rechecked, 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, to be fixed behind location, then tremie concrete is used, during perfusion, concrete does not interrupt, otherwise easily occur pile breaking phenomenon, concrete continuous is filled into polygonal top, quincunx hole and waits it solidify and obtain quincunx high strength drilled pile;
(5) piling:
Be that the concrete cement stake of helicoidal structure rotates in press-in polygonal plum blossom Soil-cement high strength carrying pile body and namely obtains polygonal quincunx high strength drilled pile by one or more pile body.
2. the manufacturing process of quincunx high strength drilled pile according to claim 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 by many plum blossom petals and form, and one or more pile body is that the concrete cement stake (5) of helicoidal structure is positioned at polygonal quincunx boring concrete pile body.
3. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: the angle between many plum blossom petals is equal or unequal.
4. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: many plum blossom concrete drill holes stake (1) pile body (2) has multi-turn lug boss (4).
5. the manufacturing process of quincunx high strength drilled pile according to claim 4, is characterized in that: be positioned on many plum blossom concrete drill holes stake (1) pile body (2) and have the distribution in spacing between multi-turn lug boss (4).
6. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: the reinforcing cage (3) in concrete drill hole stake (1) is quincunx in polygonal.
7. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: many quincunx high strength drilled piles (1) line up the quincunx high strength drilled pile structure of double dislocation or many misarrangements position side by side.
8. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: many quincunx high strength drilled pile (1) arranged in parallel become dihedral high strength drilled pile structure.
9. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: many quincunx high strength drilled pile (1) arranged in parallel become T-shaped high strength drilled pile structure.
10. the manufacturing process of quincunx high strength drilled pile according to claim 2, is characterized in that: many quincunx high strength drilled pile (1) arranged in parallel across high strength drilled pile structures.
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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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| CN201410178458.6A CN103938624B (en) | 2014-04-30 | 2014-04-30 | Quincunx high strength drilled pile and manufacturing process |
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| CN103938624A CN103938624A (en) | 2014-07-23 |
| CN103938624B true CN103938624B (en) | 2016-03-30 |
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Citations (5)
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| 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 |
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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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| CN103938624A (en) | 2014-07-23 |
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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. |