CN115233882A - Close piece together and exempt from to support coincide floor based on additional rigidity piece of bottom drop-down spring - Google Patents
Close piece together and exempt from to support coincide floor based on additional rigidity piece of bottom drop-down spring Download PDFInfo
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- CN115233882A CN115233882A CN202210783035.1A CN202210783035A CN115233882A CN 115233882 A CN115233882 A CN 115233882A CN 202210783035 A CN202210783035 A CN 202210783035A CN 115233882 A CN115233882 A CN 115233882A
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- 239000002131 composite material Substances 0.000 claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 59
- 239000010959 steel Substances 0.000 claims description 59
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- 238000005520 cutting process Methods 0.000 claims description 15
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- 238000007906 compression Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 23
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 239000004567 concrete Substances 0.000 description 13
- 238000010586 diagram Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
- E04B5/29—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated the prefabricated parts of the beams consisting wholly of metal
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/142—Means in or on the elements for connecting same to handling apparatus
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
- E04B5/17—Floor structures partly formed in situ
- E04B2005/176—Floor structures partly formed in situ with peripheral anchors or supports
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/58—Construction or demolition [C&D] waste
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a close-spliced support-free composite floor slab based on an additional stiffness member of a bottom pull-down spring, which comprises a prefabricated bottom plate, an additional stiffness member and a plugging backing plate, wherein the additional stiffness member and the plugging backing plate are arranged at the lower part of the prefabricated bottom plate; the problem of the bottom easily ftracture when the hoist and mount of being not convenient for that exists among the current assembled supporting coincide floor handling process of exempting from and the handling leads to the construction measure cost to increase, the efficiency of construction reduces is solved.
Description
Technical Field
The invention belongs to the technical field of building construction, and relates to a close-spliced support-free composite floor slab based on a bottom pull-down spring additional stiffness piece.
Background
In-situ casting (called as cast-in-situ casting) reinforced concrete building structure, because the processing, binding, template making and supporting, concrete casting and curing molding of the reinforcing steel bars are completed in a construction site, and a large material stacking and material processing site and a large amount of manual investment are needed, the mutual interference of all working procedures in construction is often caused, the construction quality is not easy to guarantee, the site wet operation amount is large, the building garbage is accumulated, the construction site and the surrounding environment are seriously influenced, and the environmental pollution is caused.
In recent years, because the land use of China is increasingly tense, the land use rate of builders is higher and higher, the operation surface of a construction site is narrower and narrower, the labor cost of the construction market is increased, the utilization rate of a template is low, and a large amount of wood is wasted, a new construction mode is urgently needed, and the field construction problem is fundamentally solved.
The prefabricated support-free prefabricated ribbed light composite floor slab can solve the construction problem of a floor slab with a cast-in-place reinforced concrete structure to the maximum extent, and can be suitable for floor slabs of almost all types of civil and industrial buildings such as a cast-in-place concrete structure, an assembled integral concrete structure, a masonry structure, a steel structure and the like. The prefabricated part of the slab is processed and finished in a standardized way in a component production factory, the processing amount and the concrete pouring amount of the floor slab reinforcing steel bars in a construction site are greatly saved, a template and a template supporting system of a floor slab do not need to be poured in site, the construction speed is improved, building materials and the labor consumption in the site are saved, the processing and construction precision is high, the space for stacking the components and the site processing can be effectively reduced, the construction waste is greatly reduced, the construction cost can be greatly saved, the energy-saving, environment-friendly and low-carbon building industrialization policy advocated by the state is met, and the slab is a novel building technology which is widely popularized in China at present.
However, when the assembled support-free composite floor slab is used for construction, the span of the composite slab is large, and the composite floor slab is usually hoisted by a crane in the assembling process and is transported to a specific position for assembly. At present, when the composite floor slab is hoisted, a truss is generally hooked by a hook according to the size of the composite floor slab, and then a hoisting device is used for hooking a hoisting ring and hoisting the composite floor slab to a preset position. Because the bottom plate of the composite floor slab is smaller in thickness, cracks are easily generated at the bottom in the transportation and hoisting process of the composite floor slab, so that the cost of construction measures is increased, and the construction efficiency is reduced. Therefore, the support-free composite floor slab with the additional rigidity part needs to be designed, the bottom of the composite floor slab is not cracked in the processes of manufacturing, demolding, transporting and hoisting, and the additional rigidity part can be recycled.
Disclosure of Invention
In view of the above, the invention provides a close-spliced support-free composite floor slab based on additional stiffness members of bottom pull-down springs, which aims to solve the problems that the existing assembled support-free composite floor slab is inconvenient to hoist and easy to crack at the bottom during hoisting, so that the construction measure cost is increased and the construction efficiency is reduced.
In order to achieve the purpose, the invention provides the following technical scheme:
close piece together exempt from to support coincide floor based on bottom drop-down spring additional stiffness piece, including prefabricated bottom plate, establish additional stiffness piece and the shutoff backing plate in prefabricated bottom plate lower part, a plurality of through-holes have been seted up to the symmetry on the prefabricated bottom plate, the joint has the hoist and mount supporting mechanism who uses with the through-hole cooperation on the additional stiffness piece, be provided with the drop-down spring in the hoist and mount supporting mechanism, the one end of hoist and mount supporting mechanism can stretch out the through-hole under the effect of drop-down spring and be convenient for prefabricated bottom plate lift by crane and also can contract to the dismantlement of hoist and mount supporting mechanism of being convenient for bottom the through-hole and recycle, the shutoff backing plate is used for the through-hole on the shutoff prefabricated bottom plate after the drop-down spring pulls down.
The beneficial effect of this basic scheme lies in: the additional rigidity piece is arranged at the bottom of the prefabricated bottom plate, and plays a role in supporting the prefabricated bottom plate and preventing the bottom of the prefabricated bottom plate from cracking in the transportation process of the prefabricated bottom plate. Hoist and mount supporting mechanism one end stretches out the through-hole and is convenient for hoisting accessory lifts by crane to prefabricated bottom plate in the prefabricated bottom plate transportation, and after prefabricated bottom plate transported to the assigned position, with hoist and mount supporting mechanism's the end that stretches out from prefabricated bottom plate to pull out and block the shutoff backing plate card between hoist and mount supporting mechanism top and prefabricated bottom plate bottom under the effect of pulldown spring, hoist and mount supporting mechanism is convenient for like this and retrieve and recycle, and the concrete can not flow when pouring after simultaneously going on the through-hole of seting up on the prefabricated bottom plate.
Further, the additional rigidity piece is a long straight steel bar truss; hoist and mount supporting mechanism includes the bearing plate of card on steel bar truss, the welding is at the cutting steel pipe of bearing plate bottom and the pressure-bearing gasket of welding in cutting steel pipe bottom, the through hole has been seted up at the bearing plate middle part, wear to be equipped with the hoist and mount telescopic link in the through hole, integrated into one piece installs the hoist and mount board on the hoist and mount telescopic link, pull-down spring is the compression spring who sets up in the cutting steel pipe, compression spring one end and hoist and mount telescopic link fixed connection other end and pressure-bearing gasket fixed connection.
Has the advantages that: the width of the bearing plate in the hoisting support mechanism is larger than the width between two cross beams of the steel bar truss, the bearing plate can be movably clamped on the two cross beams of the steel bar truss, the hoisting telescopic rod and the hoisting plate on the hoisting telescopic rod penetrate out from the through hole on the prefabricated bottom plate, the hoisting device hoists the prefabricated bottom plate through the hoisting plate, the prefabricated bottom plate is pulled down after being transported to a specified position, the hoisting telescopic rod is contracted into the cutting steel pipe, a proper plugging base plate is inserted between the hoisting plate and the prefabricated bottom plate, the plugging base plate is clamped between the hoisting plate and the prefabricated bottom plate under the restoring force action of the compression spring, and pouring of the through hole on the prefabricated bottom plate is facilitated.
Furthermore, the lower part of the hoisting telescopic rod is fixedly provided with a pull-down lifting hook, and the pull-down lifting hook is positioned at the lower part of the bearing plate and penetrates out of the cutting steel pipe. Has the advantages that: the pull-down lifting hook is helpful for lifting the telescopic rod and moving the lifting plate on the telescopic rod.
Furthermore, an anti-slip sleeve is arranged on the pull-down lifting hook.
Further, the plugging base plate is inserted between the hoisting plate and the bottom of the prefabricated bottom plate. Has the beneficial effects that: the hoisting plate moves downwards under the action of the lower-pull lifting hook to the lower part of the through hole of the prefabricated bottom plate, the plugging base plate is inserted between the hoisting plate and the bottom of the prefabricated bottom plate, the lower-pull lifting hook is loosened, the compression spring in a pressed state tightly clamps the plugging base plate between the hoisting plate and the bottom of the prefabricated bottom plate under the action of restoring force, when concrete is poured into the through hole of the prefabricated bottom plate, the concrete cannot leak, the plugging base plate is kept at the bottom of the prefabricated bottom plate, and the steel bar truss and the hoisting support mechanism can be detached to be recycled.
Further, the additional rigidity piece is long and straight double-angle steel or double-channel steel, and a connecting steel plate is welded between the double-angle steel or the double-channel steel; the hoisting support mechanism comprises a transverse pressure plate fixed between double angle steel or double channel steel, a bolt rod penetrates through the transverse pressure plate, nuts are fixedly mounted at the upper end and the lower end of the bolt rod, a pressure-bearing washer is sleeved at the lower end of the bolt rod, an extension spring is sleeved on the bolt rod between the pressure-bearing washer and the transverse pressure plate, one end of the extension spring is fixedly connected with the transverse pressure plate, the other end of the extension spring is fixedly connected with the pressure-bearing washer, and the pressure-bearing washer is welded and fixed with the nut at the lower end of the bolt rod.
Has the advantages that: transverse pressing plates in the hoisting supporting mechanism are fixedly installed between the double-angle steel or the double-channel steel, a bolt rod and a nut at the upper end of the bolt rod penetrate through a through hole in a prefabricated base plate, a hoisting device hoists the prefabricated base plate through the nut at the upper end of the bolt rod, the nut at the lower end of the bolt rod and a pressure-bearing gasket are pulled downwards after the prefabricated base plate is transported to a specified position, the nut at the upper end of the bolt rod and the nut at the upper end of the bolt rod are contracted to the position below the through hole in the prefabricated base plate, an extension spring on the bolt rod is in a tensioned state, a proper plugging base plate is inserted between the nut at the upper end of the bolt rod and the prefabricated base plate, and the plugging base plate is clamped between the hoisting plate and the prefabricated base plate under the restoring force of the extension spring, so that the through hole in the prefabricated base plate can be conveniently poured.
Further, the plugging base plate is inserted between a screw cap at the upper end of the bolt rod and the bottom of the prefabricated bottom plate. Has the beneficial effects that: the nut of shank of bolt and shank of bolt upper end moves down to prefabricated bottom plate through-hole below under the effect of lower pull-down shank of bolt, extension spring is in tensile state on the shank of bolt this moment, insert the shutoff backing plate and establish between shank of bolt upper end nut and prefabricated bottom plate bottom, extension spring in tensile state tightly blocks the shutoff backing plate between hoist and mount board and prefabricated bottom plate bottom under the effect of restoring force, when pouring concrete behind the through-hole on the prefabricated bottom plate, the concrete can not spill, the shutoff backing plate is kept somewhere in prefabricated bottom plate bottom, angle iron or channel-section steel and hoist and mount supporting mechanism can dismantle and get off and recycle.
The invention has the beneficial effects that:
1. according to the densely spliced support-free composite floor slab based on the additional stiffness member of the bottom pull-down spring, the additional stiffness member is arranged at the bottom of the prefabricated bottom plate and is directly attached to the prefabricated bottom plate, so that the additional stiffness member and the prefabricated bottom plate are integrated, the thickness of the whole prefabricated bottom plate under stress is increased, the rigidity of the whole prefabricated bottom plate is improved, the effects of supporting the prefabricated bottom plate and preventing the bottom of the prefabricated bottom plate from cracking are achieved in the transportation process of the prefabricated bottom plate, the construction cost is reduced, and the construction efficiency is improved.
2. According to the densely spliced support-free composite floor slab based on the additional stiffness member of the bottom pull-down spring, one end of a hoisting support mechanism extends out of a through hole in the transportation process of a prefabricated bottom plate, so that the hoisting device can hoist the prefabricated bottom plate conveniently, after the prefabricated bottom plate is transported to a specified position, the extending end of the hoisting support mechanism is pulled out downwards from the prefabricated bottom plate under the action of the pull-down spring, and a plugging base plate is clamped between the top of the hoisting support mechanism and the bottom of the prefabricated bottom plate.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a first schematic structural diagram according to a first embodiment of the present invention;
FIG. 2 is a second schematic structural diagram according to a first embodiment of the present invention;
FIG. 3 is a third schematic structural diagram according to a first embodiment of the present invention;
fig. 4 is a first structural schematic diagram of the hoisting support mechanism in the first embodiment of the invention;
fig. 5 is a schematic structural diagram of a second hoisting support mechanism according to the first embodiment of the invention;
FIG. 6 is a first schematic structural diagram according to a second embodiment of the present invention;
FIG. 7 is a second schematic structural diagram according to a second embodiment of the present invention;
fig. 8 is an installation schematic diagram of a hoisting support mechanism in the second embodiment of the invention;
fig. 9 is a schematic view of a hoisting support mechanism in the second embodiment of the invention.
Reference numerals: the steel bar truss type prefabricated bottom plate comprises a prefabricated bottom plate 1, an additional steel member 2, a steel bar truss 21, double angle steel 22, a connecting steel plate 23, a hoisting support mechanism 3, a bearing plate 31, a hoisting plate 32, a hoisting telescopic rod 33, a cut steel pipe 34, a bearing gasket 35, a pull-down hook 36, a compression spring 37, a transverse pressing plate 41, a bolt rod 42, a nut 43, a bearing gasket 44 and an extension spring 45.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; for a better explanation of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Example one
The close-spliced support-free composite floor slab based on the additional stiffness members of the bottom pull-down springs shown in the figures 1-5 comprises a prefabricated bottom plate 1, two rows of additional stiffness members and plugging base plates, wherein the two rows of additional stiffness members and the plugging base plates are arranged at the lower part of the prefabricated bottom plate 1, the prefabricated bottom plate 1 is symmetrically provided with two rows of four through holes, the additional stiffness members are long and straight steel bar trusses 21 and are arranged at the bottom of the prefabricated bottom plate 1 along the length direction of the prefabricated bottom plate 1.
The hoisting support mechanism 3 comprises a bearing plate 31 clamped on the steel bar truss 21, a cutting steel pipe 34 welded at the bottom of the bearing plate 31 and a bearing gasket 35 welded at the bottom of the cutting steel pipe 34, the cutting steel pipe 34 is obtained by longitudinally slotting the steel pipe, and the material is simple and easy to obtain. The width of the bearing plate 31 in the hoisting support mechanism 3 is greater than the width between two crossbeams of the steel bar truss 21, the bearing plate 31 can be movably clamped on the two crossbeams of the steel bar truss 21, the connection between the steel bar truss 21 and the prefabricated bottom plate 1 is realized through the bearing plate 31, a through hole is formed in the middle of the bearing plate 31, a hoisting telescopic rod 33 is arranged in the through hole in a penetrating way, the hoisting plate 32 is installed on the hoisting telescopic rod 33 in an integrated forming mode, the hoisting telescopic rod 33 and the hoisting plate 32 on the hoisting telescopic rod 33 penetrate out of the through hole in the prefabricated bottom plate 1, a compression spring 37 is arranged in the cutting steel pipe 34, one end of the compression spring 37 is fixedly connected with the other end of the hoisting telescopic rod 33 and a pressure-bearing gasket 35. The lower part of the lifting telescopic rod 33 is fixedly provided with a pull-down hook 36, and the pull-down hook 36 is positioned at the lower part of the bearing plate 31 and penetrates out of the longitudinal slot of the cutting steel pipe 34. Hoisting accessory lifts by crane prefabricated bottom plate 1 through hoist and mount board 32, pull-down compression spring 37 behind prefabricated bottom plate 1 transportation to the assigned position, shrink hoist and mount telescopic link 33 to cutting steel pipe 34 in, hoist and mount board 32 moves down to prefabricated bottom plate 1 through-hole below under the effect of pull-down lifting hook 36, insert the shutoff backing plate and establish between hoist and mount board 32 and prefabricated bottom plate 1 bottom, loosen pull-down lifting hook 36, compression spring 37 in compression state tightly blocks the shutoff backing plate between hoist and mount board 32 and prefabricated bottom plate 1 bottom under the restoring force effect, when pouring concrete behind the through-hole to prefabricated bottom plate 1, the concrete can not leak, the shutoff backing plate is kept somewhere in prefabricated bottom plate 1 bottom, steel bar truss 21 and hoist and mount supporting mechanism 3 can be dismantled and recycle.
Example two
The close-spliced support-free composite floor slab based on the additional stiffness member of the bottom pull-down spring as shown in fig. 6-9 comprises a prefabricated bottom plate 1, two rows of additional stiffness members and a plugging base plate, wherein the two rows of additional stiffness members and the plugging base plate are arranged at the lower part of the prefabricated bottom plate 1, the prefabricated bottom plate 1 is symmetrically provided with two rows of four through holes, the additional stiffness members are long and straight double angle steels 22, and connecting steel plates 23 are welded between the double angle steels 22; the hoisting support mechanism 3 comprises a transverse pressure plate 41 fixed between the double angle steels 22, a bolt rod 42 penetrates through the transverse pressure plate 41, nuts 43 are fixedly mounted at the upper end and the lower end of the bolt rod 42, a pressure bearing washer 44 is sleeved at the lower end of the bolt rod 42, an extension spring 45 is sleeved on the bolt rod 42 between the pressure bearing washer 44 and the transverse pressure plate 41, one end of the extension spring 45 is fixedly connected with the transverse pressure plate 41, the other end of the extension spring is fixedly connected with the pressure bearing washer 44, and the pressure bearing washer 44 is welded and fixed with the nut 43 at the lower end of the bolt rod 42.
In the hoisting support mechanism 3, a transverse pressure plate 41 is fixedly arranged between double angle steels 22, a bolt rod 42 and a nut 43 at the upper end of the bolt rod 42 penetrate through a through hole in a prefabricated base plate 1, a hoisting device hoists the prefabricated base plate 1 through the nut 43 at the upper end of the bolt rod 42, the prefabricated base plate 1 is transported to a specified position and then penetrates through the nut 43 at the lower end of a lower pull bolt rod 42 and a pressure-bearing washer 44, the bolt rod 42 and the nut 43 at the upper end of the bolt rod 42 move downwards to the lower part of the through hole of the prefabricated base plate 1 under the action of the lower pull bolt rod 42, at the moment, a tension spring 45 on the bolt rod 42 is in a tension state, a plugging base plate is inserted between the nut 43 at the upper end of the bolt rod 42 and the bottom of the prefabricated base plate 1, the tension spring 45 in the tension state tightly clamps the plugging base plate between a hoisting plate 32 and the bottom of the prefabricated base plate 1 under the action of restoring force, when concrete is poured behind the through hole on the prefabricated base plate 1, the concrete cannot leak out, the plugging base plate is left at the bottom of the prefabricated base plate 1, and the double angle steels 22 or the hoisting support mechanism 3 can be disassembled for reuse.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (7)
1. Close piece together exempt from to support coincide floor based on bottom pull-down spring additional stiffness piece, a serial communication port, including prefabricated bottom plate, establish additional stiffness piece and shutoff backing plate in prefabricated bottom plate lower part, a plurality of through-holes have been seted up to the symmetry on the prefabricated bottom plate, the joint has the hoist and mount supporting mechanism who uses with the through-hole cooperation on the additional stiffness piece, be provided with the pull-down spring in the hoist and mount supporting mechanism, the through-hole can be stretched out to the one end of hoist and mount supporting mechanism under the effect of pull-down spring and the prefabricated bottom plate of being convenient for hoist and also can contract to the through-hole bottom be convenient for hoist and mount supporting mechanism's dismantlement and recycle, the shutoff backing plate is used for shutoff through-hole on the prefabricated bottom plate after the pull-down spring pulls down.
2. A laminated, close-fitting, support-free floor slab as claimed in claim 1, wherein said additional rigid members are long, straight steel trusses; hoist and mount supporting mechanism includes the bearing plate of card on steel bar truss, the welding is at the cutting steel pipe of bearing plate bottom and the pressure-bearing gasket of welding in cutting steel pipe bottom, the through hole has been seted up at the bearing plate middle part, wear to be equipped with the hoist and mount telescopic link in the through hole, integrated into one piece installs the hoist and mount board on the hoist and mount telescopic link, pull-down spring is the compression spring who sets up in the cutting steel pipe, compression spring one end and hoist and mount telescopic link fixed connection other end and pressure-bearing gasket fixed connection.
3. The close-spliced support-free composite floor slab as claimed in claim 2, wherein a pull-down hook is fixedly mounted at the lower part of the hoisting telescopic rod, is positioned at the lower part of the bearing plate and penetrates out of the cutting steel pipe.
4. A laminated, tightly-spliced, unsupported floor slab as claimed in claim 3, wherein the drop-down hooks are fitted with anti-slip sleeves.
5. A composite floor slab as claimed in claim 4, wherein said blocking mat is interposed between the hang-off plate and the bottom of the prefabricated slab.
6. The close-spliced support-free composite floor slab as claimed in claim 1, wherein the additional rigid member is a long straight double angle steel or a double channel steel, and a connecting steel plate is welded between the double angle steel or the double channel steel; the hoisting support mechanism comprises a transverse pressing plate fixed between double-angle steel or double-channel steel, a bolt rod penetrates through the transverse pressing plate, nuts are fixedly mounted at the upper end and the lower end of the bolt rod, a pressure-bearing washer is sleeved at the lower end of the bolt rod, an extension spring is sleeved on the bolt rod between the pressure-bearing washer and the transverse pressing plate, one end of the extension spring is fixedly connected with the transverse pressing plate, the other end of the extension spring is fixedly connected with the pressure-bearing washer, and the pressure-bearing washer is welded and fixed with the nut at the lower end of the bolt rod.
7. A composite floor slab as claimed in claim 6, wherein said sealing pad is interposed between the upper end of the bolt and the bottom of the prefabricated slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210783035.1A CN115233882A (en) | 2022-07-05 | 2022-07-05 | Close piece together and exempt from to support coincide floor based on additional rigidity piece of bottom drop-down spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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