CN107386114A - Tilting pier shaft casting system - Google Patents
Tilting pier shaft casting system Download PDFInfo
- Publication number
- CN107386114A CN107386114A CN201710581539.4A CN201710581539A CN107386114A CN 107386114 A CN107386114 A CN 107386114A CN 201710581539 A CN201710581539 A CN 201710581539A CN 107386114 A CN107386114 A CN 107386114A
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- China
- Prior art keywords
- pier shaft
- tilting
- casting system
- concrete form
- brace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000005266 casting Methods 0.000 title claims abstract description 27
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000004873 anchoring Methods 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 20
- 238000000034 method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 239000011230 binding agent Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of tilting pier shaft casting system, including：Concrete form, including some modular units for enclosing pouring cavity, wherein at least one modular unit bear the oblique pressure of maximum as pressure flank, and the side relative with the pressure flank is defined as pulling force side；Support meanss, it is resisted against the outside of the pressure flank；Puller system, it is arranged on inside the concrete form, including pressure flank described in horizontal connection and the girt of pulling force side, and connect the brace of the bottom of the pressure flank and the pulling force side.By the implementation of this programme, it, which may be implemented in tilting pier shaft or king-post construction, improves the security of construction, reduces construction cost.
Description
Technical field
The present invention relates to civil construction technical field, and specifically, the present invention relates to a kind of tilting pier shaft casting system.
Background technology
With the rapid development of China's communications and transportation, the type of bridge is also maked rapid progress, in the construction of bridge, general root
According to the landform of bridge structure, auxiliary pier or transition pier pier shaft for main bridge, can select using inclination transom pier.Tilt gate-type
Pier top is provided with horizontal binder in pier, and pier shaft is inclined entity structure pier laterally.When building the inclination transom pier, need
Consider that, because pier shaft carries gradient, the pier shaft of tilting or tower column formwork need to bear concrete side pressure during concrete placings
Power.In the prior art, bear due to the method for the lateral pressure that concreting is brought have hydraulic climbing formwork method, cantilever form method,
Make English truss method, stiff skeleton method for strengthening etc. by oneself.
In the method for above-mentioned resistance concrete lateral pressure, though it is safe in hydraulic climbing formwork structure, and operating procedure is ripe,
This handling process input is big, cost is high；Though concrete lateral pressure is preferably resisted using cantilever form structure restocking physical efficiency, this
Handling process needs to carry out the lifting in casting process by tower crane, and cost input is also high while security is not good enough；Using certainly
The construction method of English truss processed is consistent with the cantilever form to be needed to carry out carrying in casting process by external force, i.e. tower crane
Rise, security is not good enough；Using the construction method of stiff skeleton by the way that pull bar is welded on stiff skeleton, tilting knot can be resisted
The concrete lateral pressure that structure thing carries, but the handling process demand stiff skeleton rigidity is big and the operational sequence is complicated, and cost is big.
The content of the invention
The purpose of the present invention aims to provide the tilting pier shaft that a kind of constructing operation is simple, safe, cost is low and poured
System.
To achieve these goals, the present invention provides following technical scheme：
A kind of tilting pier shaft casting system, including
Concrete form, including some modular units for enclosing pouring cavity, wherein at least one modular unit is as pressure
The oblique pressure of maximum is born in side, and the side relative with the pressure flank is defined as pulling force side；
Support meanss, it is resisted against the outside of the pressure flank；
Puller system, it is arranged on inside the concrete form, including pressure flank described in horizontal connection and the water of pulling force side
Horizontal drawing bar, and connect the brace of the bottom of the pressure flank and the pulling force side.
Further, the concrete form in the vertical direction is divided into some sections, and joint part is formed between section and section.
Further, the modular unit includes surface plate and the circular arc for connecting the corner between surface plate
Plate.
Further, the support meanss are triangular prism shape frame structure, including at least the gusseted frame of two sides,
And it is laterally connected at least one cross bar on two gusseted frame summits.
Further, the gusseted frame is included against the brace of the pressure flank, for fixing the support
The bottom bar of setting position, the first support bar being supported between the brace and the bottom bar.
Preferably, the gusseted frame also include the second support bar that is connected with brace, bottom bar point midway and with
Brace, the 3rd support bar of first support bar point midway connection.
Further, respectively symmetrically slotted on the concrete form pressure flank and pulling force side to reserve many places mistake
Hole, for interting girt on the inside of the concrete form.
Further, the girt two ends are fixed on the outside of the concrete form.
Further, the brace bottom is fixed with the pre-buried anchoring piece positioned at pulling force side bottom, top
It is interspersed in obliquely on the inside of the concrete form at the reserved via of the concrete form pressure flank.
Wherein, the pre-buried anchoring piece includes being fixed on the fixture of the vertical cage bar bottom of pier shaft and pours section previous
The pre-buried anchor rib of section.
Further, brace both ends end points is on different level, and the termination in pressure flank is higher than place
In the termination of pulling force side.
Further, the tilting pier shaft casting system is also at least made up of including being erected on pier shaft surrounding four steel pipes
Protective frame；The each steel pipe set up angle with close on the angle of inclination one of pier shaft show it is parallel with pier shaft.
Compared with prior art, the solution of the present invention has advantages below：
(1) tilting pier shaft casting process of the invention, using segmented pouring construction, when pouring first section successively, adopt
Implement the resistance to concrete lateral pressure with concrete form combination support meanss, the concrete form is to be temporarily fixed on pier shaft bottom, and with
The support meanss are independent construction part, and it can flexibly have enough to meet the need, and make full use of during the pouring construction of other sections, together
When, because the concrete form plays a part of curable type to the concrete poured, it can ensure that the aesthetic property of pier shaft concrete appearance.
The support meanss are combined by least two side gusseted frames and cross bar, and the supporting construction resistance to overturning is good,
First section concrete lateral pressure successively has not only been resisted, has even more improved the positioning precision of pier shaft structure.
(2) tilting pier shaft casting process of the invention, using segmented pouring construction, when pouring any section,
Concrete form combination puller system can be used to implement the resistance to concrete lateral pressure.The puller system girt, brace composition；
The girt is laid on the inside of the concrete form with brace, by using the inclined relative stress of pier shaft itself, is born
Concrete lateral pressure, while tilting pier construction precision is ensured, the implementation of this handling process is simple to operate, avoids to other
The processing of part, input are small.
The additional aspect of the present invention and advantage will be set forth in part in the description, and these will become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and it is readily appreciated that, wherein：
Fig. 1 is side layout's schematic diagram in one embodiment of the invention, and the layout of its main presentation tilting pier shaft regards
Figure.
Fig. 2 be one embodiment of the invention in dimensional structure diagram, the stereochemical structure of its main presentation concrete form.
Fig. 3 is the dimensional structure diagram in one embodiment of the invention, its main presentation concrete form and support meanss
Position relationship.
Fig. 4 be one embodiment of the invention in dimensional structure diagram, the stereochemical structure of its main presentation support means.
Fig. 5 be one embodiment of the invention in topology layout schematic diagram, the structure of its main presentation gusseted frame.
Fig. 6 be one embodiment of the invention in dimensional structure diagram, the stereochemical structure of its main presentation puller system.
Fig. 7 is the dimensional structure diagram in one embodiment of the invention, and the another kind of its main presentation puller system is stood
Body structure.
Fig. 8 is side layout's schematic diagram in one embodiment of the invention, and it is mainly the lateral plan of puller system.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
In an embodiment of the present invention, there is provided a kind of tilting pier shaft casting system, as shown in figure 1, the tilting pier
Body casting system is applied to tilt pouring for transom pier, but gate-type pier structure is tilted shown in Fig. 1 not to technology provided by the invention
The scope that scheme is applicable is construed as limiting, and casting system provided by the present invention is applied to all inclined buildings, such as leaning tower.At this
In embodiment, illustrated exemplified by suitable for the inclination transom pier, tilting transom pier includes two inclination pier shafts 01, connection
The binder 02 of two inclination pier tops of pier shaft 01.Described two inclination pier shafts 01 be defined by the axis of symmetry it is outward-dipping, it is every pouring
During one tilting pier shaft 01, due to certain angle of inclination, during concrete placings, to tilting the structure of pier shaft 01 then
Concrete lateral pressure need to be considered.In the present embodiment, it is resistance concrete lateral pressure, there is provided following casting system：
Concrete form 1, support meanss 2, puller system 3.
As shown in Fig. 2 the concrete form 1, which is used to be formed, pours cavity to enter the construction of the concrete placings of line tilt pier shaft 01.Institute
Stating concrete form 1 includes some modular units 10 for enclosing and pouring cavity, and wherein at least one modular unit 10 is as on the pressure side
The oblique pressure of maximum is born in face 11, and the side relative with the pressure flank 11 is defined as pulling force side 12.Specifically, it is described
The in the vertical direction of concrete form 1 is divided into some sections, and joint part is formed between section and section, and (it is some that Fig. 1 show concrete form 1
A certain section in section), including some sections concrete form 1 be useful in pour tilt pier shaft 01 whole work progress, such as
Tilt floor portions (the first section successively poured), the other parts (other sections poured) of pier shaft 01.Wherein, the template
Unit 10 includes surface plate 101 and the arc plate 102 connected for corner between surface plate 101；The surface plate 101 with
The bolt composition of arc plate 102 pours cavity, and the cavity is the parallelepipedal with certain angle of inclination, and angle of inclination and institute
It is consistent to state inclination pier shaft 01.
As shown in figure 3, the support meanss 2 are resisted against the outside of the pressure flank 11, suitable for tilting the bottom of pier shaft 01
The pouring construction of layer segment.Specifically, the support meanss 2 are triangular prism shape frame structure (as shown in Figure 4), and it is comprised at least
The gusseted frame 21 of two sides and it is laterally connected in two summits 23 (as shown in Figure 5) of gusseted frame 21 extremely
A few cross bar 22；Preferably, in the present embodiment, each summit 23 (totally three) of two gusseted frames 21 is horizontal
To being connected with a cross bar 22.The gusseted frame 21 (as shown in Figure 4,5) includes brace 211, bottom bar 212, first supports
Bar 213；The brace 211 is close proximity to the pressure flank 11 of the concrete form 1；The bottom bar 212 is used for the support meanss 2
It is fixed on the side rest position of the floor portions of concrete form 1 so that the support meanss 2 are born and resist concrete lateral pressure；
The bottom bar 212 outside the pressure flank 11 of concrete form 1 by forming temporary fixing structure with the position of fixing support rack 120
While, because annexation be present with the brace 211, the concrete form 1 is further subject in the position of floor portions
It is fixed；The first support bar 213 is connected with the end points of the brace 211 and the bottom bar 212, to be primarily subjected to concrete side pressure
The steel pole of power.Further, the ability of concrete lateral pressure is born to improve the steadiness of the gusseted frame 21 and raising,
The gusseted frame 21 also includes second support bar 214, the 3rd support bar 215；The second support bar 214 is connected to
The brace 211, the point midway of the bottom bar 212；3rd support bar 215 is connected to the brace 211, first
The point midway of support bar 213.When setting up the second support bar 214 and three support bars 215, it is preferable that setting up
The second support bar 214, the point of intersection between the 3rd support bar 215 correspondingly sets up the cross bar 22 and carries out to described in two
Connection between gusseted frame 21.
Being realized against relation by temporary fixing structure between the concrete form 1 and support meanss 2, tilting pier shaft
After 01 floor portions (first section successively) pour end, applied after the concrete form 1 is detachable and tilting the other parts of pier shaft 01
The concrete placings construction of (other sections), thus, the flexibility for improving the concrete form 1 and the production for reducing the present embodiment are thrown
Enter.And in the support meanss 2 for forming triangular prism shape frame structure, the gusseted frame 21 can lay multiple, its tool
The factors such as the angle of inclination of quantity and pier shaft 01 that body is laid, the position of laying, environment are relevant, and this problem does not influence this area skill
Understanding of the art personnel to the present embodiment, is not described one by one herein then.
As shown in fig. 6, reserved many places of respectively symmetrically being slotted on the pressure flank 11 of the concrete form and pulling force side 12
Via 31 specifically, in the vertical direction of concrete form 1 uniformly lay by the via 31.Further, the girt
32 two ends are fixed on the outside of concrete form 1 (as shown in Figure 8).Further, the bottom of brace 33 and (such as Fig. 6
It is shown, but scheme the shown one way in which that only brace bottom is fixed, more, as shown in fig. 7, bottom can uniformly be laid
Concrete placings joint part in the pulling force side 12；The fixation of the bottom of brace 33 should be according to the actual conditions of concrete lateral pressure
Make adjustment, by can be calculated, the present embodiment is described in detail those skilled in the art not to the utmost herein) it is fixed on 01 vertical cage bar of pier shaft
Bottom when puller system 2 () as pier shaft 01 or in the previous pre-buried anchor rib in section that pours (as 01 other pulling force of pier shaft
During device 2) it is fixed；Further, the outside of concrete form 1 (as shown in Figure 8) is fixed in the top termination of brace 33.Institute
State puller system 3 and resist the resistance of puller system 3 concrete lateral pressure described in concrete lateral pressure mainly by using the bottom of pulling force side 12
Pre-buried anchoring piece and the fixing brace bar 33 of via 31 reserved on pressure flank 11, form oblique pull bar, complete to brace
33 laying, brace 33 is only set up in its construction on the basis of girt 32, simple to operate, and input is small, safe.
It is adapted to embodiments of the invention, the tilting pier shaft casting system can meet to tilt pouring for gate-type pier shaft,
In the pouring of gate-type pier shaft is tilted, it includes two horizontal binders 02 for tilting pier shaft 01 of connection.Due in tilting pier shaft
Pour and employ support meanss 2 easy to operate and safe and puller system 3, be adapted to the inclination gate-type pier shaft to binder 02
Pour, the present invention also provides another embodiment for including protective frame 03 on the basis of above example.
As shown in figure 1, in this embodiment, the protective frame 03 (is taken mainly in combination with the existing steel pipe in scene, section steel material
If being formed) comprise at least four steel pipes for being erected on the surrounding of pier shaft 01, and the steel pipe sets up angle and closes on pier shaft 01
Angle of inclination one show it is parallel with pier shaft 01；Further, the present embodiment also includes setting up with reference to the protective frame 03 applying
Cat ladder (not shown) used in work (reinforcement installation, template peace tear operation open).Specifically, the steel pipe bottom and pier shaft 01 are held
The pre-buried fixation of platform；The top of the steel pipe and the bottom for pouring support 021 of binder 02 are fixed temporarily；Further, the steel
A diameter of 426mm of pipe.It is (including vertical as pier shaft that the protective frame 03 that the present embodiment is provided is primarily adapted for use in no triangular platform
Pier shaft) construction operation platform situation, it improves the safety of no triangular platform pier construction by setting up protective frame 03 on periphery
Property and convenience, and the protective frame 03 to set up simple, input small (being completed using job site current material), cost low.
In the present invention, tilting pier shaft is poured, completed using concrete form, support meanss and puller system, due to
The cooperation of concrete form and support meanss gives pier shaft bottom firm structure well；The combination of puller system and concrete form is very
The structure that any section including pier shaft head successively section consolidates is given well, which ensure that concrete placings pier shaft precision is same
When, reduce input, improve the efficiency of construction.
Described above is only some embodiments of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (12)
- A kind of 1. tilting pier shaft casting system, it is characterised in that includingConcrete form, including some modular units for enclosing pouring cavity, wherein at least one modular unit is as pressure flank The oblique pressure of maximum is born, the side relative with the pressure flank is defined as pulling force side；Support meanss, it is resisted against the outside of the pressure flank；Puller system, it is arranged on inside the concrete form, includes the horizontal drawing of pressure flank described in horizontal connection and pulling force side Bar, and connect the brace of the bottom of the pressure flank and the pulling force side.
- 2. tilting pier shaft casting system according to claim 1, it is characterised in that the concrete form in the vertical direction It is divided into some sections, joint part is formed between section and section.
- 3. tilting pier shaft casting system according to claim 1, it is characterised in that the modular unit includes surface plate And for connecting the arc plate of the corner between surface plate.
- 4. tilting pier shaft casting system according to claim 1, it is characterised in that the support meanss are triangular prism shape Frame structure, including at least the gusseted frame of two sides, and it is laterally connected in two gusseted frame summits At least one cross bar.
- 5. tilting pier shaft casting system according to claim 4, it is characterised in that the gusseted frame include against The brace of the pressure flank, the bottom bar for fixing the support meanss position, it is supported between the brace and the bottom bar First support bar.
- 6. tilting pier shaft casting system according to claim 5, it is characterised in that the gusseted frame also include with Brace, the bottom bar point midway second support bar connected and the 3rd support being connected with brace, first support bar point midway Bar.
- 7. tilting pier shaft casting system according to claim 1, it is characterised in that the concrete form pressure flank with And respectively symmetrically slotted on pulling force side to reserve many places via, for interting girt on the inside of the concrete form.
- 8. tilting pier shaft casting system according to claim 7, it is characterised in that the girt two ends are fixed On the outside of the concrete form.
- 9. tilting pier shaft casting system according to claim 7, it is characterised in that the brace bottom is with being located at institute The pre-buried anchoring piece for stating pulling force side bottom is fixed, and top is interspersed in the concrete form pressure on the inside of the concrete form obliquely At the reserved via in side.
- 10. tilting pier shaft casting system according to claim 9, it is characterised in that the pre-buried anchoring piece includes solid The pre-buried anchor rib in section is poured due to the fixture of the vertical cage bar bottom of pier shaft and previous.
- 11. tilting pier shaft casting system according to claim 7, it is characterised in that at the end points of the brace both ends In on different level, the termination in pressure flank is higher than the termination in pulling force side.
- 12. tilting pier shaft casting system according to claim 1, it is characterised in that the tilting pier shaft, which pours, is System also includes being erected on the protective frame that pier shaft surrounding is at least made up of four steel pipes；The each steel pipe sets up angle with closing on Show parallel with pier shaft in the angle of inclination one of pier shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710581539.4A CN107386114A (en) | 2017-07-17 | 2017-07-17 | Tilting pier shaft casting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710581539.4A CN107386114A (en) | 2017-07-17 | 2017-07-17 | Tilting pier shaft casting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107386114A true CN107386114A (en) | 2017-11-24 |
Family
ID=60339781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710581539.4A Pending CN107386114A (en) | 2017-07-17 | 2017-07-17 | Tilting pier shaft casting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107386114A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339033A (en) * | 1997-06-05 | 1998-12-22 | Sumitomo Constr Co Ltd | Concrete multistory building construction device and construction method for concrete oblique post |
| CN203007846U (en) * | 2012-12-19 | 2013-06-19 | 中铁十局集团第三建设有限公司 | Y-type block template and support system |
| CN203755173U (en) * | 2014-03-08 | 2014-08-06 | 中交三公局第二工程有限公司 | Formwork device used for hydraulic climbing of bridge high pier |
| CN104088461A (en) * | 2014-07-18 | 2014-10-08 | 北京城建建设工程有限公司 | Y-type cast-in-place concrete column formwork system and construction method thereof |
| CN105821769A (en) * | 2016-04-01 | 2016-08-03 | 上海城建市政工程（集团）有限公司 | Large-angle inclined leg pier pouring construction method |
| CN206986739U (en) * | 2017-07-17 | 2018-02-09 | 中交路桥华南工程有限公司 | Tilting pier shaft casting system |
-
2017
- 2017-07-17 CN CN201710581539.4A patent/CN107386114A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10339033A (en) * | 1997-06-05 | 1998-12-22 | Sumitomo Constr Co Ltd | Concrete multistory building construction device and construction method for concrete oblique post |
| CN203007846U (en) * | 2012-12-19 | 2013-06-19 | 中铁十局集团第三建设有限公司 | Y-type block template and support system |
| CN203755173U (en) * | 2014-03-08 | 2014-08-06 | 中交三公局第二工程有限公司 | Formwork device used for hydraulic climbing of bridge high pier |
| CN104088461A (en) * | 2014-07-18 | 2014-10-08 | 北京城建建设工程有限公司 | Y-type cast-in-place concrete column formwork system and construction method thereof |
| CN105821769A (en) * | 2016-04-01 | 2016-08-03 | 上海城建市政工程（集团）有限公司 | Large-angle inclined leg pier pouring construction method |
| CN206986739U (en) * | 2017-07-17 | 2018-02-09 | 中交路桥华南工程有限公司 | Tilting pier shaft casting system |
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Inventor after: An Bang Inventor after: Liu Huaigang Inventor after: Gao Shiqiang Inventor after: Fei Yongzhong Inventor after: Xiao Xiangrong Inventor after: Zhao Shenghui Inventor before: Liu Huaigang Inventor before: An Bang Inventor before: Gao Shiqiang Inventor before: Fei Yongzhong Inventor before: Xiao Xiangrong Inventor before: Zhao Shenghui |
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Application publication date: 20171124 |