CN109469329A - One kind can have enough to meet the need steel pipe column pumping Lifting Equipment and jacking interface construction method - Google Patents

One kind can have enough to meet the need steel pipe column pumping Lifting Equipment and jacking interface construction method Download PDF

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Publication number
CN109469329A
CN109469329A CN201811272466.1A CN201811272466A CN109469329A CN 109469329 A CN109469329 A CN 109469329A CN 201811272466 A CN201811272466 A CN 201811272466A CN 109469329 A CN109469329 A CN 109469329A
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CN
China
Prior art keywords
connection board
steel pipe
pipe column
fixed bolt
plate
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Granted
Application number
CN201811272466.1A
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Chinese (zh)
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CN109469329B (en
Inventor
宋建中
陈锋
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Zhejiang Zhongnan Construction Group Co Ltd
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Zhejiang Zhongnan Construction Group Co Ltd
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Priority to CN201811272466.1A priority Critical patent/CN109469329B/en
Publication of CN109469329A publication Critical patent/CN109469329A/en
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Publication of CN109469329B publication Critical patent/CN109469329B/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/04Devices for both conveying and distributing

Abstract

The present invention relates to one kind can have enough to meet the need steel pipe column pumping Lifting Equipment and jacking interface construction method, belongs to Architectural Equipment field.Most at present has enough to meet the need steel pipe column pumping Lifting Equipment in casting concrete, and flow velocity is also difficult to control, and operation is extremely inconvenient.The present invention includes steel pipe column, two pieces of strengthening steel slabs, junction steel plate, connection bolt, pump line and disabling mechanism;The lower part of steel pipe column is reserved with jacking interface, two pieces of strengthening steel slabs are welded on inner wall, the shear resistance for improving connecting node of jacking interface, bolt hole is reserved on strengthening steel slab, coupling nut is welded in bolt hole, junction steel plate and steel pipe column are connected by connection bolt and coupling nut, rubber pad, the leakproofness to improve steel pipe column and junction steel plate are installed between steel pipe column and junction steel plate, pump line level is welded on junction steel plate, concrete is smoothly poured, disabling mechanism is mounted on pump line, to ensure to pour when stability.

Description

One kind can have enough to meet the need steel pipe column pumping Lifting Equipment and jacking interface construction method
Technical field
The present invention relates to one kind can have enough to meet the need steel pipe column pumping Lifting Equipment and jacking interface construction method, belongs to Architectural Equipment Field.
Background technique
With scientific and technological progress and the raising of material property, super high-rise building is more and more, and outline border makes in super high-rise building The structure type combined with concrete filled steel tube is also more universal.It is most at present have enough to meet the need steel pipe column pumping Lifting Equipment be all by Bolt is mounted in Lifting Equipment, nut be mounted on it is outer, needed using hand bolt is sawed-off, while in casting concrete, stream Speed is also difficult to control, and operation is extremely inconvenient.
In view of this, disclosing a kind of steel pipe column concrete in the patent document application No. is 201620304861.3 Jack interface turnover device, comprising: concrete conveyance structure, including pump line, be set to the pump line shut-off valve and concrete conveyance Pump;And the pump line is fixed in the fixed structure of the steel pipe column, the jacking that the pump line passes through the steel pipe column Mouthful and be connected to the inside of the steel pipe column.There are flow velocitys to be difficult to control for above-mentioned documents, dismounting trouble, and working efficiency is low etc. Disadvantage.
Summary of the invention
It is an object of the invention to overcome the above deficiencies in the existing technologies, and provide a kind of reasonable in design Steel pipe column pumping Lifting Equipment and jacking interface construction method can be had enough to meet the need.
Technical solution used by the present invention solves the above problems is: this can have enough to meet the need steel pipe column pumping Lifting Equipment, including Steel pipe column, two pieces of strengthening steel slabs, junction steel plate, connection bolt, pump line and disabling mechanism;The lower part of the steel pipe column is reserved with top Interface is risen, two pieces of strengthening steel slabs are welded on inner wall, the shear resistance for improving connecting node of jacking interface, described to add Gu being reserved with bolt hole on steel plate, coupling nut is welded in the bolt hole, the junction steel plate passes through with steel pipe column Connection bolt connected with coupling nut, be equipped between the steel pipe column and junction steel plate rubber pad, to improve steel pipe column and The leakproofness of junction steel plate, the pump line level are welded on junction steel plate, concrete are smoothly poured, and described section Locking mechanism is mounted on pump line, to ensure to pour when stability, design feature is: the disabling mechanism includes activity Plate, fixed bolt hole, bolt, spring, securing plate, speed adjusting plate, fixing bolt, sliding rail, left connection board and right connection board;Institute It states left connection board and right connection board is installed on pump line, the securing plate is connected by bolt and left connection board and right connection board It connects;The wall surface of the left connection board and right connection board is provided with the sliding rail for installation activity plate, the movable plate Two sides are slidably installed in the sliding track;The movable plate, securing plate, left connection board and right connection board constitute an airtight cavity, The spring is located in airtight cavity, and one end of the spring is contacted with securing plate, the plate and bullet of the bottom of the movable plate Another end in contact of spring;Pipe hole is provided on the movable plate, the speed adjusting plate is mounted on movable plate, on the speed adjusting plate It is provided with speed regulation mouth, the flow velocity for adjusting concrete of the annular disk for installing different-diameter, the pipe hole and speed regulation Mouth cooperation;Three groups of fixed bolt holes are provided on the movable plate, the pitch-row between fixed bolt hole between every two groups is equal, The two group fixed bolt holes equal with pitch-row on movable plate, the movable plate are provided in the left connection board and right connection board On two adjacent groups fixed bolt hole connect with two groups of fixed bolt holes in left connection board and right connection board by fixing bolt. Equipment tool is convenient for disassembly and assembly, remove nut after the completion of use, and it is not necessary that bolt is sawed-off, flow velocity can according to the actual situation It needs to select annular disk.
Further, the movable plate is T-type movable plate.
Further, the mortar being provided in the left connection board and right connection board for flowing out pipeline drains Remove, avoid the drainage seam of obstruction sliding rail.
Further, three groups of fixed bolt holes be respectively first group of fixed bolt hole, second group of fixed bolt hole and Third group fixed bolt hole, when on first group of fixed bolt hole and second group of fixed bolt hole and left connection board and right connection board When two groups of fixed bolt holes are connected by fixing bolt, at this time to pour state;When second group of fixed bolt hole and third group are solid It is at this time cut-off shape when determining bolt hole and being connect with two groups of fixed bolt holes in left connection board and right connection board by fixing bolt State.
Further, the spring be carbon spring, the carbon spring can when needing to end, using its own Movable plate is jacked and is then connected by fixing bolt by elastic force, is solved tradition and is needed artificial drawback.
Further, the two sides of the movable plate are provided with the protrusion for sliding in the sliding track.
Further, every group of fixed bolt hole includes two fixed bolt holes, two fixed bolt hole institute groups in every group At face it is horizontally disposed.
Further, jacking the distance between the interface and ground are 400mm ± 100mm.
Further, the jacking interface construction method for having enough to meet the need steel pipe column pumping Lifting Equipment, it is characterized in that: When dismounting, pump line is removed by connection bolt to be had enough to meet the need, connection bolt is tightened to the sealing for carrying out steel pipe column after dismounting; When work, the cut-off and circulation of concrete are carried out by the movable plate in disabling mechanism and passes through first after movable Board position determines Two groups of fixed bolt holes on group fixed bolt hole and second group of fixed bolt hole and left connection board and right connection board pass through fixation It is bolted;Or second group of fixed bolt hole and third group fixed bolt hole are fixed with two groups in left connection board and right connection board Bolt hole is connected by fixing bolt, to control the cut-off and circulation of concrete.
Further, the axis of the speed regulation mouth is identical as the axis of annular disk.
Compared with prior art, the invention has the following advantages that equipment tool is convenient for disassembly and assembly, coupling nut is mounted on equipment It is interior, connection bolt is removed after the completion of use, it is not necessary that bolt is sawed-off, flow velocity can be according to the needs of actual conditions to annular Disk is selected, and the shear resistance of connecting node is improved, and the mortar that pipeline flows out can be drained away, avoid blocking by drainage seam Sliding rail;Then carbon spring can be jacked movable plate through fixed spiral shell using the elastic force of its own when needing to end It tethers and connects, solve tradition and need artificial drawback.
Detailed description of the invention
Fig. 1 is the schematic view of the front view for having enough to meet the need steel pipe column pumping Lifting Equipment of the embodiment of the present invention.
Fig. 2 is the structural schematic diagram of the disabling mechanism of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of the annular disk of the embodiment of the present invention.
Fig. 4 is the overlooking structure diagram for having enough to meet the need steel pipe column pumping Lifting Equipment of the embodiment of the present invention.
In figure: steel pipe column 1, strengthening steel slab 2, junction steel plate 3, connection bolt 4, pump line 5, disabling mechanism 6, movable plate 6.1, Fixed bolt hole 6.2, spring 6.4, securing plate 6.5, speed adjusting plate 6.6, fixing bolt 6.7, sliding rail 6.8, draws bolt 6.3 Stream seam 6.9, left connection board 6.10, right connection board 6.11, pipe hole 6.12, speed regulation mouth 6.13.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawing and by embodiment, and following embodiment is to this hair Bright explanation and the invention is not limited to following embodiments.
Embodiment.
Referring to FIG. 1 to FIG. 4, it should however be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc. are only used To cooperate the revealed content of specification, so that those skilled in the art understands and reads, being not intended to limit the invention can The qualifications of implementation, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, it should all still fall in disclosed skill In the range of art content can cover.Meanwhile if in this specification with reference as "upper", "lower", "left", "right", " centre " and The term of " one " etc. is merely convenient to being illustrated for narration, rather than to limit the scope of the invention, relativeness It is altered or modified, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
Steel pipe column pumping Lifting Equipment, including 1, two piece of strengthening steel slab 2 of steel pipe column, connection steel are had enough to meet the need in the present embodiment Plate 3, connection bolt 4, pump line 5 and disabling mechanism 6;The lower part of steel pipe column 1 is reserved with jacking interface, jacks between interface and ground Distance be 400mm ± 100mm, two pieces of strengthening steel slabs 2 are welded on the jacking inner wall of interface, the shearing resistance for improving connecting node Ability is reserved with bolt hole on strengthening steel slab 2, and coupling nut is welded in bolt hole, and junction steel plate 3 and steel pipe column 1 are logical It crosses connection bolt 4 to connect with coupling nut, rubber pad is installed, to improve steel pipe column 1 between steel pipe column 1 and junction steel plate 3 With the leakproofness of junction steel plate 3,5 level of pump line is welded on junction steel plate 3, concrete is smoothly poured, cut-off Mechanism 6 is mounted on pump line 5, to ensure to pour when stability.
Disabling mechanism 6 in the present embodiment includes movable plate 6.1, fixed bolt hole 6.2, bolt 6.3, spring 6.4, reinforces Plate 6.5, speed adjusting plate 6.6, fixing bolt 6.7, sliding rail 6.8, left connection board 6.10 and right connection board 6.11.
Left connection board 6.10 and right connection board 6.11 in the present embodiment are installed on pump line 5,6.10 He of left connection board The drainage that the mortar for flowing out pipeline drains away, avoids obstruction sliding rail 6.8 is provided in right connection board 6.11 Seam 6.9, securing plate 6.5 are connect by bolt 6.3 with left connection board 6.10 and right connection board 6.11.
The wall surface of left connection board 6.10 and right connection board 6.11 in the present embodiment is provided with for installation activity plate 6.1 Sliding rail 6.8, the two sides of movable plate 6.1 are slidably mounted in sliding rail 6.8, and the two sides setting of movable plate 6.1 is useful In the protrusion slided in sliding rail 6.8, movable plate 6.1 is T-type movable plate.
It is closed that movable plate 6.1, securing plate 6.5, left connection board 6.10 and right connection board 6.11 in the present embodiment constitute one Cavity, spring 6.4 are located in airtight cavity, and spring 6.4 is carbon spring, and carbon spring can utilize it when needing to end Movable plate 6.1 is jacked and is then connected by fixing bolt 6.7 by the elastic force of itself, is solved tradition and is needed artificial drawback, spring 6.4 one end is contacted with securing plate 6.5, the plate of the bottom of movable plate 6.1 and another end in contact of spring 6.4.
Pipe hole 6.12 is provided on movable plate 6.1 in the present embodiment, speed adjusting plate 6.6 is mounted on movable plate 6.1, is adjusted Speed regulation mouth 6.13, the flow velocity for adjusting concrete of the annular disk for installing different-diameter, pipe hole are provided on fast plate 6.6 Mouth 6.12 cooperates with speed regulation mouth 6.13;The axis for adjusting the speed mouth 6.13 is identical as the axis of annular disk.
Three groups of fixed bolt holes 6.2, the fixed bolt hole between every two groups are provided on movable plate 6.1 in the present embodiment Pitch-row between 6.2 is equal, is provided in left connection board 6.10 and right connection board 6.11 equal with pitch-row on movable plate 6.1 Two groups of fixed bolt holes 6.2, two adjacent groups fixed bolt hole 6.2 and left connection board 6.10 and right connection board on movable plate 6.1 Two groups of fixed bolt holes 6.2 on 6.11 are connected by fixing bolt 6.7;Every group of fixed bolt hole 6.2 includes two fixed spiral shells Keyhole 6.2, face composed by two fixed bolt holes 6.2 in every group are horizontally disposed.
Three groups of fixed bolt holes 6.2 in the present embodiment are respectively first group of fixed bolt hole, second group of fixed bolt hole With third group fixed bolt hole, when first group of fixed bolt hole and second group of fixed bolt hole and left connection board 6.10 and right connection When two groups of fixed bolt holes 6.2 on plate 6.11 are connected by fixing bolt 6.7, at this time to pour state;It is fixed when second group Bolt hole and third group fixed bolt hole pass through with two groups of fixed bolt holes 6.2 in left connection board 6.10 and right connection board 6.11 It is at this time off state when fixing bolt 6.7 connects.
The jacking interface construction method for having enough to meet the need steel pipe column pumping Lifting Equipment in the present embodiment, when dismounting, passes through company Connecting bolt 4 is had enough to meet the need to remove pump line 5, bolt 4 will be connected after dismounting tightens and carry out the sealing of steel pipe column 1;When work, lead to The cut-off and circulation that the movable plate 6.1 crossed in disabling mechanism 6 carries out concrete pass through first group after 6.1 position of movable plate determines Two groups of fixed bolt holes 6.2 on fixed bolt hole and second group of fixed bolt hole and left connection board 6.10 and right connection board 6.11 It is connected by fixing bolt 6.7;Or second group of fixed bolt hole and third group fixed bolt hole and left connection board 6.10 and right company Two groups of fixed bolt holes 6.2 on fishplate bar 6.11 are connected by fixing bolt 6.7, to control the cut-off and circulation of concrete.
Equipment tool is convenient for disassembly and assembly, and coupling nut is mounted in equipment, removes connection bolt 4 after the completion of use, Sawed-off without that will connect bolt 4, flow velocity can according to the needs of actual conditions select annular disk, improve the anti-of connecting node Ability is cut, drainage seam 6.9 can drain away the mortar that pipeline flows out, and avoid obstruction sliding rail 6.8;Carbon spring can be with When needing to end, movable plate 6.1 is jacked using the elastic force of its own and is then connected by fixing bolt 6.7, tradition is solved Need artificial drawback.
In addition, it should be noted that, the specific embodiments described in this specification, the shape of parts and components are named Title etc. can be different, and above content is only to structure of the invention example explanation described in this specification.It is all according to According to equivalence changes or simple change that the invention patent design structure, feature and principle is done, it is included in this hair In the protection scope of bright patent.Those skilled in the art can do described specific embodiment various The mode that the modify or supplement or adopt of various kinds is similar substitutes, and without departing from structure of the invention or surmounts present claims Range defined in book, is within the scope of protection of the invention.

Claims (10)

1. one kind can have enough to meet the need steel pipe column pumping Lifting Equipment, including steel pipe column (1), two pieces of strengthening steel slabs (2), junction steel plate (3), Connect bolt (4), pump line (5) and disabling mechanism (6);The lower part of the steel pipe column (1) is reserved with jacking interface, and described two pieces add Gu steel plate (2) is welded on inner wall, the shear resistance for improving connecting node of jacking interface, pre- on the strengthening steel slab (2) There are bolt hole, coupling nut is welded in the bolt hole, the junction steel plate (3) passes through with steel pipe column (1) to be connect Bolt (4) is connected with coupling nut, is equipped with rubber pad between the steel pipe column (1) and junction steel plate (3), to improve steel pipe The leakproofness of column (1) and junction steel plate (3), pump line (5) level are welded on junction steel plate (3), make concrete smooth Carry out pour, the disabling mechanism (6) is mounted on pump line (5), to ensure to pour when stability, it is characterised in that: institute State disabling mechanism (6) include movable plate (6.1), fixed bolt hole (6.2), bolt (6.3), spring (6.4), securing plate (6.5), Speed adjusting plate (6.6), fixing bolt (6.7), sliding rail (6.8), left connection board (6.10) and right connection board (6.11);The left side Connecting plate (6.10) and right connection board (6.11) are installed on pump line (5), the securing plate (6.5) by bolt (6.3) with Left connection board (6.10) and right connection board (6.11) connection;The wall surface of the left connection board (6.10) and right connection board (6.11) is equal It is provided with the sliding rail (6.8) for installation activity plate (6.1), the two sides of the movable plate (6.1) are slidably mounted on sliding In track (6.8);The movable plate (6.1), securing plate (6.5), left connection board (6.10) and right connection board (6.11) constitute one Airtight cavity, the spring (6.4) are located in airtight cavity, and one end of the spring (6.4) is contacted with securing plate (6.5), institute State the plate of the bottom of movable plate (6.1) and another end in contact of spring (6.4);Pipe hole is provided on the movable plate (6.1) Mouth (6.12), the speed adjusting plate (6.6) are mounted on movable plate (6.1), are provided on the speed adjusting plate (6.6) for installing not With speed regulation mouth (6.13), the flow velocity for adjusting concrete of the annular disk of diameter, the pipe hole (6.12) and speed regulation mouth (6.13) cooperate;Three groups of fixed bolt holes (6.2), the fixed bolt hole between every two groups are provided on the movable plate (6.1) (6.2) pitch-row between is equal, is provided on the left connection board (6.10) and right connection board (6.11) and movable plate (6.1) Two groups of equal fixed bolt holes (6.2) of upper pitch-row, two adjacent groups fixed bolt hole (6.2) on the movable plate (6.1) with Two groups of fixed bolt holes (6.2) in left connection board (6.10) and right connection board (6.11) are connected by fixing bolt (6.7).
2. according to claim 1 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: the movable plate (6.1) For T-type movable plate.
3. according to claim 1 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: the left connection board (6.10) and in right connection board (6.11) mortar for flowing out pipeline is provided with to drain away, avoid obstruction sliding rail (6.8) (6.9) are stitched in drainage.
4. according to claim 1 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: three groups of fixing bolts Hole (6.2) is respectively first group of fixed bolt hole, second group of fixed bolt hole and third group fixed bolt hole, is fixed when first group Two groups of fixed bolt holes on bolt hole and second group of fixed bolt hole and left connection board (6.10) and right connection board (6.11) (6.2) when being connected by fixing bolt (6.7), at this time to pour state;When second group of fixed bolt hole and the fixed spiral shell of third group Two groups of fixed bolt holes (6.2) on keyhole and left connection board (6.10) and right connection board (6.11) pass through fixing bolt (6.7) It is at this time off state when connection.
5. according to claim 1 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: the spring (6.4) is Movable plate (6.1) can be jacked using the elastic force of its own and then be led to when needing to end by carbon spring, the carbon spring Fixing bolt (6.7) connection is crossed, tradition is solved and needs artificial drawback.
6. according to claim 1 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: the movable plate (6.1) Two sides be provided with the protrusion for sliding in the sliding rail (6.8).
7. according to claim 1 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: every group of fixed bolt hole It (6.2) include two fixed bolt holes (6.2), face composed by two fixed bolt holes (6.2) in every group is horizontally disposed.
8. according to claim 7 have enough to meet the need steel pipe column pumping Lifting Equipment, it is characterised in that: the jacking interface and ground The distance between face is 400mm ± 100mm.
9. a kind of jacking interface for having enough to meet the need steel pipe column pumping Lifting Equipment as described in any claim in claim 1-8 Construction method, it is characterised in that: when dismounting, pump line (5) is removed by connection bolt (4) to be had enough to meet the need, will be connected after dismounting Connecting bolt (4) tightens the sealing for carrying out steel pipe column (1);When work, mixed by the movable plate (6.1) in disabling mechanism (6) It coagulates the cut-off and circulation of soil and passes through first group of fixed bolt hole and second group of fixed bolt hole after movable plate (6.1) position determines It is connect with two groups of fixed bolt holes (6.2) in left connection board (6.10) and right connection board (6.11) by fixing bolt (6.7); Or two groups on second group of fixed bolt hole and third group fixed bolt hole and left connection board (6.10) and right connection board (6.11) Fixed bolt hole (6.2) is connected by fixing bolt (6.7), to control the cut-off and circulation of concrete.
10. the jacking interface construction method according to claim 9 for having enough to meet the need steel pipe column pumping Lifting Equipment, feature exist In: the axis of speed regulation mouth (6.13) is identical as the axis of annular disk.
CN201811272466.1A 2018-10-30 2018-10-30 Recyclable steel pipe column pumping jacking equipment and jacking interface construction method Active CN109469329B (en)

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CN201811272466.1A CN109469329B (en) 2018-10-30 2018-10-30 Recyclable steel pipe column pumping jacking equipment and jacking interface construction method

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Application Number Priority Date Filing Date Title
CN201811272466.1A CN109469329B (en) 2018-10-30 2018-10-30 Recyclable steel pipe column pumping jacking equipment and jacking interface construction method

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CN109469329B CN109469329B (en) 2021-04-23

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CN105569342A (en) * 2015-12-31 2016-05-11 江苏省交通科学研究院有限公司 Discharging grooved plate being used with concrete hopper
CN205475710U (en) * 2016-04-13 2016-08-17 中国建筑第八工程局有限公司 Steel -pipe column concrete jacking interface turnover device
CN205677249U (en) * 2016-05-13 2016-11-09 江苏启安建设集团有限公司 A kind of casting concrete constructional column hopper
CN106065690A (en) * 2016-07-19 2016-11-02 江苏中南建筑产业集团有限责任公司 A kind of steel pipe column (wall) concrete lift-up compaction forming device and method
CN106179703A (en) * 2016-07-20 2016-12-07 南通天蓝环保能源成套设备有限公司 Preventing clogging up device is broken in a kind of counterattack for treating construction waste
CN206681384U (en) * 2017-04-27 2017-11-28 中建城市建设发展有限公司 A kind of anti-backflow concrete filled steel tube jacks interface arrangement
CN206874852U (en) * 2017-05-12 2018-01-12 宏润建设集团股份有限公司 Jack concrete filled steel tube stop valve
CN207373468U (en) * 2017-10-18 2018-05-18 福建三凯建筑材料有限公司 A kind of antisiludging building mortar mixing blow-down drum of two-way stirring
CN207829478U (en) * 2017-10-24 2018-09-07 中国建筑第六工程局有限公司 A kind of magazine attachment
CN108004895A (en) * 2017-12-01 2018-05-08 倪敏芳 A kind of high efficiency construction equipment of municipal administration bituminous concrete highway pavement
CN108202397A (en) * 2017-12-26 2018-06-26 彭斌明 A kind of constructing tunnel normal concrete blender

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