CN211666254U - Early system of tearing open of floor template free of support - Google Patents
Early system of tearing open of floor template free of support Download PDFInfo
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- CN211666254U CN211666254U CN201922383103.1U CN201922383103U CN211666254U CN 211666254 U CN211666254 U CN 211666254U CN 201922383103 U CN201922383103 U CN 201922383103U CN 211666254 U CN211666254 U CN 211666254U
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Abstract
The utility model relates to a building templates especially relates to a building floor template exempts from to support early system of tearing open. The wall comprises wall bodies, embedded parts, angle plates, bolts and supporting beams which are arranged oppositely, wherein the embedded parts are arranged in a plurality, are symmetrically distributed on opposite side surfaces of the wall body along the direction of a transverse shaft, and are arranged on the same horizontal plane and are provided with internal threaded holes; a plurality of threaded holes matched with the embedded parts are formed in one side plate of the angle plate, the threaded holes are longitudinal strip-shaped holes, and the diameter of a first hole at the upper end is smaller than that of a second hole at the lower end; the bolt comprises a screw and a nut, and the screw is matched with the internal thread hole and the first hole of the embedded part; the nut is cylindrical, and the diameter of the nut is matched with the inner diameter of the second hole. The supporting beams are arranged on the corresponding angle plates at intervals. The utility model discloses light simple and convenient when dismantling, be favorable to human cost and material cost's saving, simultaneously owing to avoid setting up vertical bearing support and make implementation time basically not dangerous.
Description
Technical Field
The utility model relates to a building templates belongs to building engineering technical field, especially relates to a building floor template exempts from to support early system of tearing open.
Background
At present, the floor slabs of the steel structure house mainly comprise a composite floor slab and a non-composite floor slab formed by casting concrete on a profiled steel sheet in situ, an assembled integral reinforced concrete floor slab, an assembled floor slab and the like. When a floor slab is built, templates are often needed to be used, the templates are important tools used in building construction, template frames are generally needed to be additionally arranged even when the existing templates are used, and adjacent templates are connected with each other through the template frames to form a complete template system.
Among the prior art when building floor needs the pouring concrete, use generally to nail into a floor die cavity with the plank, then pour into the die cavity of plank with the concrete thick liquid, it demolishs to need to prize the plank after the concrete setting shaping, this easily causes the plank to damage, the efficiency of construction is lower, can not form quick effectual demolishment structure after concrete placement accomplishes, cause man-hour overlength, intensity of labour is too high, be unfavorable for human cost and material cost's saving, removable floor template erects the bearing support usually in the floor below and is used for supporting among the prior art in addition, still have certain danger during the demolishment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to prior art's defect and not enough, a support-free system and application method that can dismantle floor template fast simply is provided, realize light simple and convenient dismantlement under the condition that does not destroy floor template and avoid setting up vertical bearing support, the efficiency of construction consumes weak point in man-hour, and intensity of labour is not big, be favorable to the saving of human cost and material cost, simultaneously because avoid setting up vertical bearing support and make the technical scheme in this patent implement time basically not dangerous, thereby reach the purpose of dismantling floor template fast simply and safely, the availability factor and the life-span of template have also been improved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a floor template exempts from to support early system of tearing open which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the embedded parts are arranged in a plurality and symmetrically distributed on the opposite side surfaces of the wall body along the direction of the transverse shaft, and the embedded parts are arranged on the same horizontal plane and are provided with internal thread holes;
the corner plate is characterized in that a plurality of threaded holes matched with the embedded parts are formed in one side plate of the corner plate, the threaded holes are longitudinal strip-shaped holes, and the diameter of a first hole at the upper end is smaller than that of a second hole at the lower end;
the bolt comprises a screw and a nut, and the screw is matched with the internal thread hole and the first hole of the embedded part; the nut is cylindrical and the diameter of the nut is matched with the inner diameter of the second hole,
and a plurality of supporting beams which are arranged on the corresponding angle plates at intervals.
The beam in the direction of the cross shaft is used for manufacturing a template carrier for bearing floor casting, the embedded parts are matched with the bolts to carry the corresponding angle plates so as to easily and simply realize template carrying, more complex embedded parts and templates which are easily damaged by using steel bars for connection are not required to be arranged, the threaded holes formed in the angle plates provide ingenious buckling relation for the subsequent steps of carrying and detaching the templates, and the operation is simple and convenient.
The utility model discloses a further improvement is, nut thickness more than or equal to scute thickness, the nut is higher than the position of scute is the polygon cylinder.
The utility model discloses a further improvement scheme is, still include:
the cross arm connecting piece is arranged in the middle of the supporting beam, and the cross arm is arranged on the cross arm connecting piece and is vertical to the supporting beam;
and one end of the reinforcing beam is arranged on the angle plate, and the other end of the reinforcing beam is arranged on the cross beam.
The utility model discloses a further improvement scheme is, the cross arm roof beam both sides are located to the stiffening beam symmetry, and the upper surface is in the coplanar with a supporting beam.
The utility model discloses a further improvement is, the cross arm connecting piece is including connecting in a supporting beam's first part and the second part of carrying on one's arms and establishing the cross arm roof beam, the second part is connected in first part below, elevation structure is installed to the second part.
The utility model discloses a further improvement is, the side is equipped with the opening that is greater than the cross arm roof beam height on the second part, and it has the hasp structure that can open and shut to articulate on the opening, the cross arm roof beam passes the hasp shoulder pole and establishes on elevation structure.
The utility model discloses a further improvement is that, elevation structure is including establishing on the second part gliding first steel sheet from top to bottom, fixing in second part bottom and being equipped with the third steel sheet that can supply the support column to pass the second through-hole comprehensively, first steel sheet is equipped with downwards and takes bellied support column, place the second steel sheet on the third steel sheet, be equipped with on the second steel sheet with the second through-hole the same first through-hole, and first through-hole intercommunication only supply the gliding slip track in support column protruding below position, second steel sheet, third steel sheet are passed in proper order downwards to the support column.
The utility model discloses a further improvement scheme is, the stretcher roof beam is born on the arm and is established on first steel sheet.
The utility model discloses a further improvement is, it is equipped with two cross arm connecting pieces to prop up supporting beam middle part correspondence, and every row of cross arm connecting piece all takes on an arm and establishes a cross arm roof beam, stiffening beam one end is taken on an arm and is established on the scute, and the other end is taken on an arm and is established on an at least cross arm roof beam.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the template carrier for bearing floor casting is made only by using the beams in the direction of the transverse shaft, corresponding angle plates are carried by utilizing the embedded parts and the bolts to easily and simply realize template carrying, more complex embedded parts and templates which are easily damaged by using steel bars for connection are not required to be arranged, and the threaded holes formed by the angle plates provide ingenious buckling connection for the subsequent steps of carrying and detaching the templates, so that the operation is simple and convenient.
(2) Through the arrangement of the plurality of reinforcing beams and the structure which is arranged in parallel with the supporting beams, the bearing concrete can be stressed uniformly in casting from the mechanical aspect, and the stability is good.
(3) The angle plate and the wall body are fixed to serve as a bearing base in a special method by utilizing the threaded holes with small upper parts and large lower parts arranged on the angle plate and matching with the bolts with the external threaded screws and the nuts, and the bearing method is easy and strong in operability.
(4) The bolt sets up the head, can make the head laminating and cover on the second hole when with scute screw in wallboard, not only makes the screw in screw out more convenient and difficult slippage.
(5) Through the cooperation of the special screw hole of scute and bolt, the operating procedure when dismantling floor template is with carrying the thing and establishing when reverse going on, can be fixed after the concrete floor is moulded, light laborsaving dismantlement under the condition of harmless floor template, and do not have the dangerous reduction of vertical support.
(6) A more simple, convenient and quick method is provided for mounting and dismounting the cross arm beam by arranging the lifting structure in the cross arm connecting piece.
Drawings
FIG. 1 is a bottom view of the support-free early-dismantling system of the present invention
FIG. 2 is a bottom view of the improved embodiment of the support-free early-dismantling system of the present invention
FIG. 3 is a bottom view of the improved embodiment of the support-free early-dismantling system of the present invention
FIG. 4 is the schematic view of the cross arm connecting piece structure of the present invention
FIG. 5 is the schematic view of the lifting structure of the cross arm connecting piece of the present invention
FIG. 6 is a schematic view of the corner plate bolt hole of the present invention
FIG. 7 is the angle plate bolt hole optimization schematic diagram of the present invention
FIG. 8 is a schematic view of the bolt of the present invention
In the figure: 1-a wall body; 2-embedded parts; 3-corner plate: 301-first hole, 302-second hole; 4-a support beam; 5-cross arm connecting piece: 501-first part, 502-second part: 5021-first steel plate: 5021A-support column, 5021B-bulge, 5022-second steel plate: 5022A, a first through hole, 5022B, a sliding track, 5023, a third steel plate: 5023A-second through hole B; 6-a reinforcing beam; 7-horizontal stretcher bar; 8-bolt: 801-screw and 802-nut.
Detailed Description
The present invention will be further clarified by the following detailed description, which is to be understood as being given by way of illustration only, and not by way of limitation, of the scope of the invention, which, after reading the present invention, is intended to fall within the scope of the appended claims, as modified by those skilled in the art in various equivalent forms.
The floor formwork support-free early-dismantling system comprises oppositely arranged wall bodies 1, and the wall bodies 1 are completely identical in structure. The wall body 1 is provided with an embedded part 2, internal threads are arranged in the embedded part 2, an angle plate 3 is fixed on the wall body 1, and the angle plate 3 is connected with the wall body 1 through a bolt 8. A plurality of threaded holes matched with the embedded parts 2 are formed in one side plate of the angle plate 3, the threaded holes are longitudinal strip-shaped holes, and the diameter of a first hole 301 at the upper end is smaller than that of a second hole 302 at the lower end; the bolt 8 comprises a screw 801 and a nut 802, wherein the screw 801 is matched with the internal thread hole and the first hole 301 of the embedded part 2; the nut 802 is cylindrical with a diameter that matches the inner diameter of the second bore 302. The thickness of the nut 802 is larger than or equal to that of the angle plate 3, and the part of the nut 802 higher than the angle plate 3 is a polygonal column. The supporting beams 4 are arranged on the corresponding angle plates 3 of the two opposite wall bodies 1 at intervals, the cross arm connecting pieces 5 arranged at corresponding positions in the middle of the supporting beams 4 are provided with cross arm beams 7 perpendicular to the supporting beams 7 below the supporting beams 5, the cross arm connecting pieces 5 sleeved in the middle of the supporting beams 4 penetrate through the cross arm beams 7, and the reinforcing beams 6 with the same specification as the supporting beams 4 are arranged on the cross arm beams 7 and the corresponding angle plates 3 and form the same plane with the supporting beams 4.
The utility model discloses a concrete embodiment as follows:
example 1:
according to the method, as shown in figure 1, two opposite walls 1 are required to be cast according to floor distance design, when the walls 1 are cast, a plurality of embedded parts 2 with internal threads are horizontally embedded at proper positions as required, openings of the embedded parts 2 are flush with the walls 1 outwards, and angle plates 3 with certain thicknesses are fixed on the walls 1 at the proper positions through bolts 8. A plurality of reserved threaded holes are formed in the angle plate 3 at intervals, the threaded holes are longitudinal strip-shaped holes, and the diameter of a first hole 301 at the upper end is smaller than that of a second hole 302 at the lower end; the bolt 8 comprises a screw 801 and a nut 802, wherein the screw 801 is matched with the internal thread hole and the first hole 301 of the embedded part 2; the nut 802 is cylindrical with a diameter that matches the inner diameter of the second bore 302. When the angle plate is installed, the first hole 301 of the angle plate 3 is aligned with the position of the embedded part 2 and attached to the wall body 1, the bolt 8 is aligned and screwed until the nut 802 is attached to the angle plate 3, the polygonal column part higher than the angle plate 3 covers the second hole 302, an upward force is applied to the angle plate 3 to lift the angle plate 3, so that the part of the screw 801, which is positioned in the first hole 301 of the angle plate 3, is relatively dropped into the second hole 302, and the bolt 8 is continuously screwed until the nut 802 enters the second hole 302.
And a plurality of supporting beams 4 are arranged on the corresponding angle plate 3 at intervals to form a plane, a floor formwork is laid on the plane, staggered reinforcing steel bars are arranged on the floor formwork in a binding mode according to design requirements, and concrete is poured to form the reinforced concrete floor slab. And the reinforced beam 6 is disassembled after the reinforced concrete floor is in the set type. When the reinforcing beam 6 is disassembled, firstly, the bolt 8 is unscrewed, when the nut 802 is unscrewed from the second hole 302 on the angle plate 3, the screw 801 is dropped into the first hole 301 relative to the angle plate 3 by applying a downward pressing force to the angle plate 3, namely, the angle plate 3 is displaced downwards, and at the moment, the supporting beam 4 carried on the angle plate 3 is displaced downwards to form a gap with the reinforced concrete floor, so that the operation of disassembling the reinforcing beam 6 easily and harmlessly can be realized.
Example 2:
as shown in fig. 2, 4, 5 and 8, the embodiment 2 is improved on the basis of the above embodiment, and the mounting and dismounting method of the embodiment is the same as the method of the embodiment 1, and the structure for erecting the supporting beams 4 as the supporting carriers of the floor forms is improved.
Three supporting beams 4 are arranged on the corresponding angle plate 3 at intervals and are evenly distributed on the wall body 1 with two opposite surfaces. The middle part of the supporting beam 4 is provided with a first part 501 on a row of cross arm connecting pieces 5, and a second part 502 is closely connected below the first part 501 and is used for traversing the cross arm beam 7 vertical to the supporting beam 4, so that the cross arm beam 7 is closely attached to and suspended below the supporting beam 4. A plurality of reinforcing beams 6 are erected on the corresponding gusset 3 and the cross-arm beam 7 so as to be flush with the support beam 4.
When the cross arm beam 7 is sleeved, the openable lock catch on the second component 502 included in the cross arm connector 5 is opened, after the cross arm beam 7 is transversely placed into the cross arm beam 7, the support column 5021A with the protrusion 5021B which is provided at the bottom of the second component 502 and can slide up and down is jacked up, the protrusion 5021B is 3 cm away from the first steel plate 5021, the second steel plate 5022 included in the second component 502 is placed on the third steel plate 5023 fixedly connected with the second component 502, the second through hole 5023A which is coincident with the vertical projection of the support column 5021A and is provided on the third steel plate 5023 is provided with the second through hole 5023A which is coincident with the vertical projection of the support column 5021A through the sliding rail 5022B which is only provided for sliding of the lower part of the protrusion 5021B of the support column 5021A, the first through hole 5022A 5021A which is coincident with the vertical projection of the support column 5021A is connected with the support column 5021A, and the first through hole 5022A and the second through hole 5022A can be completely penetrated by jacking up to push the support column 5021A to sleeve 5022A of the support column 502, the supporting column 5021A falls into the sliding rail 5022B, so that the protrusion 5021B is clamped on the second steel plate 5022, the first steel plate 5021 moves upwards, a certain height exists between the first steel plate 5021 and the second steel plate 5022, and the cross beam 7 is attached to the supporting beam 4 by the top of the first steel plate 5021.
One end of a reinforcing beam 6 is arranged on the angle plate 3, the other end of the reinforcing beam is arranged on a cross beam 7, a plurality of reinforcing beams 6 are arranged on the left and right sides in a staggered mode in sequence to form a plane with the supporting beam 4, a floor formwork is laid on the plane formed by the reinforcing beams 6 and the supporting beam 4, staggered reinforcing steel bars are arranged on the floor formwork in a binding mode according to design requirements, and concrete is poured to form a reinforced concrete floor.
During disassembly, the second steel plate 5022 is knocked by a small hammer to enable the part, sleeved with the support column 5021A, of the second steel plate 5022 to slide to the first through hole 5022A through the sliding rail 5022B, at the moment, the support column 5021A with the protrusion 5021B is superposed with the first through hole 5022A and the second through hole 5023B in a vertical direction in a projection mode, the support column 5021A slides downwards to the first steel plate 5021, the second steel plate 5022 and the third steel plate 5023 in an overlapped mode, the cross arm beam 5027 falls down, and the cross arm beam 5027 can be taken out after the lock catch is opened. The rest disassembly methods are the same as those in the embodiment 1, so that the planes formed by the supporting beams 4, the cross arm beams 7 and the reinforcing beams 6 which are arranged on the angle plates 3 are displaced downwards, and gaps are formed between the planes and the reinforced concrete floor, and the process of disassembling the reinforcing beams 6 easily and nondestructively can be realized.
The embodiment improves the base carrier only erecting the supporting beams 4 as the floor formwork, and adds the cross beams 7 and the reinforced I-shaped beams 6 to ensure better bearing capacity.
Example 3:
as shown in fig. 3, 4, 5 and 8, the method of mounting and dismounting of embodiment 3 is the same as that of embodiment 2, and the stability of the structure for erecting the support beams 4 and the cross-arm beams 7 is further improved.
Four supporting beams 4 are arranged on the corresponding angle plate 3 at intervals and are uniformly distributed on the wall body 1 with two opposite surfaces. The corresponding position in the middle part of the supporting beam 4 is sleeved with two rows of first parts 501 on the cross arm connecting pieces 5, the second parts 502 are closely connected under the first parts 501, each row of cross arm connecting pieces 5 transversely penetrates through the cross arm beam 7 vertical to the supporting beam 4, so that the cross arm beam 7 is closely attached to and suspended under the supporting beam 4, and the cross arm beams 7 can be sleeved in parallel or alternatively sleeved in a staggered mode by taking the supporting beam 4 as a unit. A plurality of reinforcing beams 6 are arranged on both sides of the supporting beam 4 in a left-right staggered manner in sequence, one end of each reinforcing beam is arranged on the angle plate 3, and the other end of each reinforcing beam is arranged on one or two cross beams 7, so that the reinforcing beams and the supporting beam 4 form the same plane.
All the other are consistent with embodiment 2, on the basis that the reinforcing beam 6 can still be disassembled easily and nondestructively in the embodiment, the reinforcing beam 6 is more stable due to the improved structures of the supporting beam 4 and the cross arm beam 7, two staggered shorter cross arm beams 7 are arranged during construction, and the method is more convenient than the method for arranging one longer cross arm beam 7 and has better bearing capacity.
Example 4:
as shown in fig. 7, the embodiment 4 only makes a further improvement on the threaded holes on the corner plates, and only optimizes the structure of the threaded holes under the condition that other structures are unchanged. The diameters of the first hole 301 and the second hole 302 are unchanged, the first hole 301 and the second hole 302 at the upper end of the threaded hole are formed in a mode that the central axes of the first hole 301 and the second hole 302 are perpendicular to the ground, and the center of the first hole 301 is located on the intersecting chord of the first hole and the second hole and is higher than the center of the second hole 302. The rest is not described in detail.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a floor template exempts from to support early system of tearing open, includes wall body (1) of relative setting, its characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the embedded parts (2) are multiple, and are symmetrically distributed on the opposite side surfaces of the two wall bodies (1) along the direction of the transverse shaft, and the embedded parts (2) are arranged on the same horizontal plane and are provided with internal threaded holes;
a plurality of threaded holes matched with the embedded parts (2) are formed in one side plate of the angle plate (3), the threaded holes are longitudinal strip-shaped holes, and the diameter of a first hole (301) at the upper end is smaller than that of a second hole (302) at the lower end;
the bolt (8) comprises a screw (801) and a nut (802), and the screw (801) is matched with the internal thread hole and the first hole (301) of the embedded part (2); the nut (802) is cylindrical and has a diameter matching the inner diameter of the second bore (302);
and a plurality of supporting beams (4) are arranged on the corresponding angle plate (3) at intervals.
2. The support-free early-dismantling system for the floor formwork as claimed in claim 1, wherein: the thickness of the nut (802) is larger than or equal to that of the angle plate (3), and the part of the nut (802) higher than the angle plate (3) is a polygonal column.
3. The support-free early-dismantling system for the floor formwork as claimed in claim 1, wherein: also comprises the following steps of (1) preparing,
the cross arm connecting piece (5) is arranged in the middle of the supporting beam (4), and the cross arm beam (7) is arranged on the cross arm connecting piece (5) and is vertical to the supporting beam (4);
and one end of the reinforcing beam (6) is arranged on the angle plate (3), and the other end of the reinforcing beam (6) is arranged on the cross arm beam (7).
4. The support-free early-dismantling system for the floor formwork as claimed in claim 3, wherein: the reinforcing beams (6) are symmetrically arranged on two sides of the cross beam (7), and the upper surfaces of the reinforcing beams and the supporting beams (4) are in the same plane.
5. The support-free early-dismantling system for the floor formwork as claimed in claim 3, wherein: the cross arm connecting piece (5) comprises a first component (501) connected to the supporting beam (4) and a second component (502) for bearing the cross arm beam (7), the second component (502) is connected below the first component (501), and a lifting structure is installed on the second component (502).
6. The support-free early-dismantling system for the floor formwork as claimed in claim 5, wherein: the upper side of the second component (502) is provided with an opening which is higher than the height of the cross arm beam (7), the opening is hinged with a locking structure which can be opened and closed, and the cross arm beam (7) penetrates through the opening to be arranged on the lifting structure.
7. The support-free early-dismantling system for the floor formwork as claimed in claim 5, wherein: the lifting structure comprises a first steel plate (5021) which is arranged on a second component (502) and can slide up and down, a third steel plate (5023) which is fixed at the bottom of the second component (502) and is provided with a second through hole (5023B) which can be completely penetrated by a support column (5021A), wherein the first steel plate (5021) is downwards provided with the support column (5021A) with a bulge (5021B), the third steel plate (5022) is placed on the third steel plate (5023), a first through hole (5022A) which is the same as the second through hole (5023B) is arranged on the second steel plate (5022), a sliding rail (5022B) which is communicated with the first through hole (5022A) and only supplies the part sliding below the bulge (5021B) of the support column (5021A), and the second steel plate (5022) and the third steel plate (5023) are downwards sequentially penetrated by the support column (5021A).
8. The support-free early demolition system for floor formwork of claim 7, wherein: the cross arm beam (7) is arranged on the first steel plate (5021).
9. The support-free early demolition system for floor formwork of claim 8, wherein: two rows of cross arm connecting pieces (5) are correspondingly arranged in the middle of the supporting beam (4), each row of cross arm connecting pieces (5) is provided with a cross arm beam (7), one end of the reinforcing beam (6) is arranged on the angle plate (3), and the other end of the reinforcing beam is arranged on at least one cross arm beam (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922383103.1U CN211666254U (en) | 2019-12-26 | 2019-12-26 | Early system of tearing open of floor template free of support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922383103.1U CN211666254U (en) | 2019-12-26 | 2019-12-26 | Early system of tearing open of floor template free of support |
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| CN211666254U true CN211666254U (en) | 2020-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922383103.1U Active CN211666254U (en) | 2019-12-26 | 2019-12-26 | Early system of tearing open of floor template free of support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058621A (en) * | 2019-12-26 | 2020-04-24 | 江苏恒桂创科建筑工程科技有限公司 | Early system of tearing open of floor template free of support |
| CN111058621B (en) * | 2019-12-26 | 2024-06-04 | 江苏恒桂创科建筑工程科技有限公司 | Early system of tearing open of floor template support-free |
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2019
- 2019-12-26 CN CN201922383103.1U patent/CN211666254U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111058621A (en) * | 2019-12-26 | 2020-04-24 | 江苏恒桂创科建筑工程科技有限公司 | Early system of tearing open of floor template free of support |
| CN111058621B (en) * | 2019-12-26 | 2024-06-04 | 江苏恒桂创科建筑工程科技有限公司 | Early system of tearing open of floor template support-free |
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