CN112196095B - L-shaped concrete prefabricated member - Google Patents
L-shaped concrete prefabricated member Download PDFInfo
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- CN112196095B CN112196095B CN202010947636.2A CN202010947636A CN112196095B CN 112196095 B CN112196095 B CN 112196095B CN 202010947636 A CN202010947636 A CN 202010947636A CN 112196095 B CN112196095 B CN 112196095B
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/02—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements
- E04B1/04—Structures consisting primarily of load-supporting, block-shaped, or slab-shaped elements the elements consisting of concrete, e.g. reinforced concrete, or other stone-like material
- E04B1/043—Connections specially adapted therefor
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6125—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
- E04B1/6137—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface the connection made by formlocking
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6125—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface
- E04B1/6141—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with protrusions on the one frontal surface co-operating with recesses in the other frontal surface the connection made by an additional locking key
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6145—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with recesses in both frontal surfaces co-operating with an additional connecting element
- E04B1/6158—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with recesses in both frontal surfaces co-operating with an additional connecting element the connection made by formlocking
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
- E04B1/61—Connections for building structures in general of slab-shaped building elements with each other
- E04B1/6108—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together
- E04B1/612—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces
- E04B1/6145—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with recesses in both frontal surfaces co-operating with an additional connecting element
- E04B1/6162—Connections for building structures in general of slab-shaped building elements with each other the frontal surfaces of the slabs connected together by means between frontal surfaces with recesses in both frontal surfaces co-operating with an additional connecting element the connection made by an additional locking key
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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
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
- E04B1/68—Sealings of joints, e.g. expansion joints
- E04B1/6812—Compressable seals of solid form
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- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention belongs to the technical field of concrete prefabricated parts, in particular to an L-shaped concrete prefabricated part; comprises a main board body; the main plate body is formed by pouring concrete; the main board body comprises a horizontal board and a vertical board; the end surfaces of the horizontal plate and the vertical plate are both provided with rotating grooves, and rotating blocks are rotatably arranged in the rotating grooves through rotating columns; a dovetail clamping block is fixed on the bottom end surface of the rotating block which is rotatably arranged at the end part of the horizontal plate; a dovetail block is fixed on the end face of the rotating block rotatably arranged at the top end of the vertical plate, and a dovetail clamping groove is formed in the upper end of the dovetail block; the dovetail clamping groove and the dovetail clamping block are in sliding splicing contact; a cross slot cavity is formed in each rotating block, and rotating cavities are formed at two ends of each cross slot cavity; a cross through hole is formed in the rotating column and is aligned with the cross slot cavity; the rotating column is rotatably arranged in the rotating cavity; a cross-shaped inserting pipe is inserted in the cross-shaped through hole in a sliding manner; the stability and the fastness of connecting between the prefab of assembling each other have been improved.
Description
Technical Field
The invention belongs to the technical field of concrete prefabricated parts, and particularly relates to an L-shaped concrete prefabricated part.
Background
The concrete prefabricated member is concrete for manufacturing concrete products at a factory or a construction site instead of a final design position, the concrete prefabricated member is cast elsewhere instead of a final construction site, and the concrete prefabricated members with different sizes and shapes can adopt fibers to enhance the reliability and the toughness after cracking.
Concrete prefabricated parts are a new favorite in the construction industry due to their low cost and excellent performance. The wide variety of styles, weights coupled with excellent flexural strength and performance have led to their widespread use in the area of roadblocks, tanks, exterior walls, construction and decoration.
Current L type concrete prefabricated member is when using, because concrete prefabricated member is most as an organic whole pouring formation, and then when a plurality of concrete prefabricated members interconnect the assembly mutually, then need set up a plurality of connecting holes or a plurality of spread groove on the prefabricated member, this kind of mode not only influences the stability of prefabricated member interconnect assembly, influences the fastness that the prefabricated member is connected simultaneously.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides the L-shaped concrete prefabricated member which is mainly used for solving the problems that when the existing L-shaped concrete prefabricated member is used, because most of the concrete prefabricated members are integrally cast, when a plurality of concrete prefabricated members are connected and assembled, a plurality of connecting holes or a plurality of connecting grooves need to be formed in the prefabricated member, the mode not only influences the stability of the mutual connection and assembly of the prefabricated members, but also influences the firmness of the connection of the prefabricated members.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an L-shaped concrete prefabricated part, which comprises a main plate body; the main plate body is formed by pouring concrete; the main board body comprises a horizontal board and a vertical board; the end surfaces of the horizontal plate and the vertical plate are both provided with a rotating groove, and rotating blocks are rotatably arranged in the rotating grooves through rotating columns; a dovetail clamping block is fixed on the bottom end face of the rotating block which is rotatably arranged at the end part of the horizontal plate; a dovetail block is fixed on the end face of the rotating block rotatably arranged at the top end of the vertical plate, and a dovetail clamping groove is formed in the upper end of the dovetail block; the dovetail clamping grooves are used for being in mutual sliding, inserting and contacting with dovetail clamping blocks of other prefabricated parts; the rotating blocks are internally provided with cross slot cavities, and the two ends of each cross slot cavity are provided with rotating cavities; a cross through hole is formed in the rotating column and is aligned with the cross slot cavity; the rotating column is rotatably arranged in the rotating cavity; a cross-shaped inserting pipe is inserted in the cross-shaped through hole in a sliding manner, and the inner end part of the cross-shaped inserting pipe is inserted in the cross-shaped slot cavity in a sliding manner; the cross plug-in pipe is communicated with the cross slot cavity; during operation, when two L type precast concrete pieces are required to be assembled, if the horizontal plate of one of the precast concrete pieces is required to be assembled on the top end of the vertical plate of the other precast concrete piece, the cross plug-in pipe inserted above the vertical plate of one of the precast concrete pieces can be firstly drawn out from the rotating column by an assembler, then the assembler needs to rotate the dovetail block installed in the rotating groove above the vertical plate through the rotating block to be right above the vertical plate, then the assembler slides the clamping block arranged below the end part of the horizontal plate of the other precast concrete piece into the dovetail clamping groove formed in the adjusted dovetail block, then the cross plug-in pipe is inserted into the cross through hole and the cross slot cavity above the vertical plate, so that the cross plug-in pipe can perform limited rotating operation on the dovetail block, the precast concrete pieces assembled mutually are prevented from swinging, and then the assembler inserts viscous concrete slurry into the dovetail slot formed by the cross plug-in the end parts of the vertical plate and the horizontal plate The connecting pipe is injected into the cross slot cavity, so that the phenomenon that the cross splicing pipe is separated from the interior of the vertical plate and the horizontal plate after concrete slurry is solidified can be prevented, meanwhile, the assembling personnel uniformly daubs the concrete slurry on the connecting part between the dovetail clamping block and the dovetail block, the phenomenon that the dovetail clamping block is separated from the interior of the dovetail block is prevented, and the stability and firmness of connection between the prefabricated parts which are mutually assembled are improved; if need assemble the horizontal plate of one of them prefab to the side of the vertical board of another prefab, the assembly quality rotates the lateral surface of vertical board with the forked tail piece of installing on the vertical board of one of them prefab earlier, then peg graft fixedly through the cross plug tube, then rotate the forked tail fixture block that the horizontal plate tip of another prefab set up to the upper surface parallel and level with the horizontal plate, then assembly quality can with the horizontal forked tail fixture block of horizontal plate slip insert in the forked tail piece of vertical board side surface, and then make two prefabs can realize the connection of different modes, and then enlarged L type concrete prefab's use occasion, need not punch the operation to L type concrete prefab surface simultaneously, alright carry out the mutual assembly operation with a plurality of L type concrete prefabs.
Preferably, a plurality of inserting cavities are uniformly formed in the end face of the rotating groove; a plurality of flow guide cavities are formed in the surface, attached to the rotating groove, of the rotating block, and the flow guide cavities are aligned with the insertion cavities; the flow guide cavity is communicated with the cross slot cavity; elastic water-absorbing expansion strips are inserted into the insertion cavities, and the top ends of the elastic water-absorbing expansion strips are elastically inserted into the flow guide cavities; elastic reinforcing steel bars are arranged inside the elastic water absorption expansion strips; when the prefabricated member assembling device works, after the two prefabricated members are assembled, the plurality of flow guide cavities formed in the rotating block can be aligned with the plurality of inserting cavities, the upper ends of the flow guide cavities are communicated with the cross inserting cavity, when an assembler injects concrete slurry into the cross inserting cavity, the concrete slurry can correspondingly flow into the plurality of inserting cavities through the plurality of flow guide cavities, the elastic water-absorbing expansion strips are arranged in the inserting cavities, the top ends of the elastic water-absorbing expansion strips are elastically inserted into the flow guide cavities, the concrete slurry continuously flows into the flow guide cavities and the inserting cavities along with the flow guide cavities, the elastic water-absorbing expansion strips can absorb partial water of the concrete slurry, so that the elastic water-absorbing expansion strips can be expanded and hardened, the elastic water-absorbing expansion strips can be hardened into the flow guide cavities and the inserting cavities after absorbing water, the strength of the elastic water-absorbing expansion strips after being hardened can be further improved by the elastic steel ribs arranged in the elastic water-absorbing expansion strips, and the mounting stability and the connection firmness of the rotating block in the rotating groove can be further improved, when effectively preventing the prefab from producing the vibration, lead to the turning block to produce wobbling phenomenon in rotating the recess, and then influence the stability of connecting between the prefab.
Preferably, a plurality of water guide holes are formed in the outer end wall of the elastic water absorption expansion strip; the elastic reinforcing steel bar is inserted into the elastic water-absorbing expansion strip in a sliding manner; the water guide hole is communicated with the outer wall of the elastic steel bar; the during operation, when the concrete thick liquids enter into the grafting intracavity, partial concrete thick liquids can permeate the outer wall of elastic reinforcement through the water guide hole, and bond to the outer wall of elastic reinforcement, after the concrete thick liquids solidify, the concrete thick liquids can form the bulge form at the both ends in water guide hole, the fastness of being connected between elastic reinforcement outer wall and the elasticity water absorption expansion strip has not only been increased, the bulge form that a plurality of water guide hole outer ends produced simultaneously can make the elasticity water absorption expansion strip outside form a large amount of bulges, and then make and pour into the concrete thick liquids into and can the efficient bond on the outer wall of grafting chamber and elasticity water absorption expansion strip, prevent because the elasticity water absorption expansion strip is non-concrete material, and then influence the stability of elasticity water absorption expansion strip at grafting intracavity portion-mounting.
Preferably, a plurality of through cavities are uniformly formed in the dovetail fixture block and communicated with a cross slot cavity in a rotating block rotatably arranged at the end part of the horizontal plate; a mesh film ball is arranged in the penetrating cavity, and a plurality of water-absorbing swelling particles are filled in the mesh film ball; when the dovetail block is in work, when concrete slurry is injected into a cross slot cavity of a rotating block provided with a dovetail clamping block, the concrete slurry in the cross insertion cavity can be injected into a through cavity through the cross insertion cavity, the concrete slurry entering the through cavity can be contacted with water-absorbing expansion particles through mesh film balls, so that the water-absorbing expansion particles are expanded and hardened, the expansion and hardening of the water-absorbing expansion particles can enable the mesh film balls to be extruded and crushed, the hardened water-absorbing expansion particles fall onto the groove wall of the dovetail groove, meanwhile, the concrete slurry penetrating the cavity can also permeate into the groove wall of the dovetail groove, further, the dovetail clamping block and the dovetail block which are mutually inserted can be mutually bonded and fixed through the concrete slurry injected inside, the phenomenon that the dovetail clamping block breaks away from the dovetail block due to the uneven concrete slurry coated on the outer wall of the dovetail clamping block and the outer wall of the dovetail block is prevented, thereby affecting a stable connection between the preforms.
Preferably, a plurality of water suction cavities are uniformly formed in the dovetail clamping groove, and the bottom end of each water suction cavity is communicated with a cross-shaped slot cavity formed in a rotating block rotatably arranged at the top end of the vertical plate; the top ends of the water absorption cavities are aligned with a plurality of through cavities formed in dovetail fixture blocks which are inserted in a sliding mode, a plurality of water absorption expansion columns are vertically arranged in the water absorption cavities, and the water absorption expansion columns are supported into the water absorption cavities through the mesh layer; when the dovetail clamping block is inserted into the dovetail clamping groove in a sliding mode, a plurality of water absorption cavities formed in the dovetail clamping groove can be aligned with a plurality of through cavities in the dovetail clamping block, when concrete slurry is injected into the rotating block connected with the dovetail clamping block and the rotating block connected with the dovetail block, the concrete slurry injected into the rotating block connected with the dovetail block can be distributed to the water absorption cavities, one part of the concrete slurry injected into the water absorption cavities can be contacted with water absorption expansion columns arranged in the water absorption cavities through the mesh layer, so that the water absorption expansion columns expand, meanwhile, the concrete slurry can push the mesh layer to move towards the upper portions of the water absorption cavities, the mesh layer moves upwards to drive the water absorption expansion columns to be inserted into the through cavities, and the water absorption expansion particles expanded in the through cavities correspondingly fall into the water absorption holes, so that the concrete slurry, the water absorption expansion columns and the water absorption expansion particles can be hard limiting inserted columns in the water absorption cavities and the through cavities after being hardened, and then can prevent that the forked tail piece and the forked tail fixture block that mutual slip was pegged graft from producing the phenomenon of dislocation slip, further improve forked tail fixture block at the stability and the fastness of the interior slip grafting of forked tail piece.
Preferably, a plurality of conical bulges are arranged on the upper surface of the mesh layer at the top end of the water suction cavity; the bottom end of the mesh film ball is provided with a plurality of hard conical sheets, and the hard conical sheets and the conical bulges are arranged in a staggered manner; the during operation, can promote the mesh layer that absorbs water the chamber top and upwards move under the upwards inflation's of a plurality of inflation posts that absorb water when the mesh layer, make the toper arch that mesh layer upper surface set up can enter into and run through the intracavity, the toper arch that mesh film ball bottom end face set up can extrude the mesh layer simultaneously, and then make the toper arch on the mesh layer and the toper arch of mesh film ball can form the extrusion force each other and extrude the breakage with the position of its contact, make mesh layer and mesh film ball can quick broken operation, and then be convenient for absorb water the chamber and run through the chamber and communicate.
Preferably, a plurality of overflow ports are uniformly formed in the rotating block and are communicated with the cross slot cavity; sealing blocks are movably inserted into the overflow ports; when the rotary column rotates, an operator can take the sealing block off the overflow port, then the rotary block rotates to enable the overflow port to be aligned with the splicing cavity, the rotary block can be communicated with the splicing cavity conveniently after rotation, and concrete injected into the rotary block enters the splicing cavity through the overflow port; then insert the water conservancy diversion intracavity with the sealed piece of taking off, and then be convenient for the water conservancy diversion chamber and form the overflow mouth for the inside concrete thick liquids that can fully pour into of turning block improves the bonding fastness between the prefab of concrete thick liquids to splicing each other.
Preferably, the size of the overflow ports is the same as that of the diversion cavities; a plurality of metal strips are uniformly arranged on the inner side wall of the sealing block and are inserted into the overflow port; when the rotating block rotates, the plurality of overflow ports formed in the rotating block can be aligned with the plurality of inserting cavities, so that the elastic water-absorbing expansion strips extending out of the inserting cavities can be elastically inserted into the overflow ports, and the overflow ports can be communicated with the inserting cavities; when the sealing block inserted the water conservancy diversion intracavity that corresponds, the metal strip that the sealing block terminal surface set up can insert the water conservancy diversion intracavity, when the water conservancy diversion intracavity flowed in there is concrete slurry, the concrete slurry can adsorb the parcel on the metal strip, and after concrete slurry solidifies, the parcel can be fixed the sealing plug at the concrete slurry of metal strip, can prevent effectively that the sealing plug from producing the phenomenon that breaks away from.
Preferably, the bottom ends of the plurality of plugging cavities are mutually communicated through communicating cavities, and metal elastic pieces are inserted into the communicating cavities; the upper end surfaces of the metal elastic sheets are connected with elastic steel bars; the during operation, when the grafting intracavity is poured into and is had the concrete thick liquids, the concrete thick liquids can flow into the intercommunication intracavity along the grafting chamber, simultaneously the concrete thick liquids can adsorb the parcel on the metal shell fragment in the intercommunication intracavity, and then can fix the intercommunication intracavity with the metal shell fragment, simultaneously the concrete thick liquids adsorbs the elastic reinforcement that can connect the metal shell fragment top to the parcel of metal shell fragment, and then be convenient for carry out the elastic fixation operation with a plurality of elasticity water absorption expansion strips behind the expansion hardening, effectively prevent because a plurality of elasticity water absorption expansion strips exist at grafting intracavity mutually independent, and then when the prefab produces and rocks, the turning block produces the swing in rotating the recess and rocks the phenomenon, and then influence the stability of connecting between the prefab.
Preferably, the outer wall of the elastic steel bar is provided with the protruding sheets in a layered manner, and the protruding sheets are inserted into the water guide holes in a sliding manner; during operation, when concrete slurry passes through the water guide hole and contacts with the elastic reinforcement, the concrete slurry in the water guide hole can wrap up on the burl sheet, and then can pass through the concrete with the elastic reinforcement and fix to the elasticity inflation strip that absorbs water, has improved the metal shrapnel that the elastic reinforcement lower extreme is connected simultaneously and has carried out fixed effect with the elasticity inflation strip that absorbs water.
Preferably, a convex ball is formed on the cavity wall in the cavity of the cross slot, and a metal sheet is exposed at the top end of the convex ball; during operation, when the cross grafting intracavity was injected into and is had the concrete thick liquids, the concrete thick liquids can wrap up on protruding ball, and the concrete thick liquids can condense at the sheetmetal simultaneously, and then improves the fashioned stability of cross grafting intracavity concrete thick liquids and fastness.
The invention has the following beneficial effects:
1. according to the invention, through the mutual insertion and matching of the dovetail clamping blocks and the dovetail blocks, an assembler can insert the dovetail clamping blocks horizontal to the horizontal plate into the dovetail blocks on the side surface of the vertical plate in a sliding manner, so that the two prefabricated members can be connected in different modes, the use occasions of the L-shaped concrete prefabricated members are enlarged, meanwhile, the mutual assembly operation of a plurality of L-shaped concrete prefabricated members can be carried out without carrying out punching operation on the surfaces of the L-shaped concrete prefabricated members, and the stability and the firmness of the connection between the mutually assembled prefabricated members are improved.
2. According to the invention, the elastic water-absorbing expansion strips can be hardened into the flow guide cavity and the splicing cavity after absorbing water, and the elastic steel bars arranged in the elastic water-absorbing expansion strips can further improve the strength of the elastic water-absorbing expansion strips after hardening, so that the mounting stability and connection firmness of the rotating blocks in the rotating grooves are improved, and the phenomenon that the rotating blocks swing in the rotating grooves when the prefabricated members vibrate is effectively prevented, and the connection stability between the prefabricated members is further influenced.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of a horizontal plate of the present invention;
FIG. 3 is a cross-sectional view of a vertical plate of the present invention;
in the figure: the water absorption expansion plate comprises a main plate body 1, a horizontal plate 2, a vertical plate 3, a rotating groove 31, an inserting cavity 32, a communicating cavity 33, a rotating column 4, a cross through hole 41, a rotating block 5, a cross slot cavity 51, a rotating cavity 52, a flow guide cavity 53, an overflow port 54, a convex ball 55, a dovetail clamping block 6, a penetrating cavity 61, a dovetail block 7, a dovetail clamping groove 71, a water absorption cavity 72, a cross inserting pipe 8, an elastic water absorption expansion strip 9, a water guide hole 91, an elastic steel bar 10, a spure sheet 101, a mesh film ball 20, a hard conical sheet 201, a water absorption expansion column 30, a mesh layer 40, a conical protrusion 401, a sealing block 50, a metal strip 60 and a metal elastic sheet 70.
Detailed Description
An L-shaped concrete preform according to an embodiment of the present invention will be described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the L-shaped precast concrete member according to the present invention includes a main plate body 1; the main plate body 1 is formed by pouring concrete; the main plate body 1 comprises a horizontal plate 2 and a vertical plate 3; the end surfaces of the horizontal plate 2 and the vertical plate 3 are both provided with a rotating groove 31, and a rotating block 5 is rotatably arranged in each rotating groove 31 through a rotating column 4; a dovetail clamping block 6 is fixed on the bottom end surface of a rotating block 5 which is rotatably arranged at the end part of the horizontal plate 2; a dovetail block 7 is fixed on the end face of the rotating block 5 which is rotatably arranged at the top end of the vertical plate 3, and a dovetail clamping groove 71 is formed in the upper end of the dovetail block 7; the dovetail clamping grooves 71 are used for being in mutual sliding, inserting and contacting with dovetail clamping blocks of other prefabricated members; a cross slot cavity 51 is formed in each rotating block 5, and rotating cavities 52 are formed at two ends of each cross slot cavity 51; a cross through hole 41 is formed in the rotating column 4, and the cross through hole 41 is aligned with the cross slot cavity 51; the rotating column 4 is rotatably arranged in the rotating cavity 52; a cross plug pipe 8 is inserted in the cross through hole 41 in a sliding manner, and the inner end part of the cross plug pipe 8 is inserted in the cross slot cavity 51 in a sliding manner; the cross plug pipe 8 is communicated with the cross slot cavity 51;
when the two L-shaped precast concrete pieces are assembled, if the horizontal plate 2 of one precast concrete piece is assembled to the top end of the vertical plate 3 of the other precast concrete piece, an assembler can firstly draw out the cross plug-in pipe 8 inserted above the vertical plate 3 of one precast concrete piece from the rotating column 4, then the assembler needs to rotate the dovetail block 7 installed in the rotating groove 31 above the vertical plate 3 through the rotating block 5 to be right above the vertical plate 3, then the assembler slides the dovetail block 6 arranged below the end part of the horizontal plate 2 of the other precast concrete piece into the dovetail clamping groove 71 arranged on the adjusted dovetail block 7, then inserts the cross plug-in pipe 8 into the cross through hole 41 and the cross plug-in groove cavity 51 above the vertical plate 3, so that the cross plug-in pipe 8 can perform the operation of limiting rotation on the dovetail block 7, the phenomenon that prefabricated parts which are mutually assembled swing is prevented, then, an assembler injects viscous concrete slurry into a cross slot cavity 51 through a cross splicing pipe 8 spliced by the end parts of a vertical plate 3 and a horizontal plate 2, and then the phenomenon that the cross splicing pipe 8 is separated from the interior of the vertical plate 3 and the interior of the horizontal plate 2 after the concrete slurry is solidified can be prevented, meanwhile, the assembler uniformly paints the concrete slurry on the connecting part between a dovetail clamping block 6 and a dovetail block 7, so that the phenomenon that the dovetail clamping block 6 is separated from the interior of the dovetail block 7 is prevented, and further, the stability and the firmness of connection between the prefabricated parts which are mutually assembled are improved; if it is desired to fit the horizontal plate 2 of one of the preforms to the side of the vertical plate 3 of the other preform, the assembler rotates the dovetail block 7 mounted on the vertical plate 3 of one of the prefabricated members to the outer side surface of the vertical plate 3, then the dovetail block 6 arranged at the end part of the horizontal plate 2 of the other prefabricated part is rotated to be flush with the upper surface of the horizontal plate 2, the fitter can then slidingly insert the dovetail block 6 that is horizontal to the horizontal plate 2 into the dovetail block 7 of the side surface of the vertical plate 3, thereby enabling the two prefabricated members to realize the connection in different modes, further enlarging the application occasions of the L-shaped concrete prefabricated members, simultaneously, the surface of the L-shaped concrete prefabricated member does not need to be punched, and a plurality of L-shaped concrete prefabricated members can be assembled with each other.
As an embodiment of the present invention, a plurality of insertion cavities 32 are uniformly formed on the end surface of the rotation groove 31; a plurality of flow guide cavities 53 are formed in the surfaces, attached to the rotating grooves 31, of the rotating blocks 5, and the flow guide cavities 53 are aligned with the insertion cavities 32; the diversion cavity 53 is communicated with the cross slot cavity 51; elastic water-absorbing expansion strips 9 are inserted into the insertion cavities 32, and the top ends of the elastic water-absorbing expansion strips 9 are elastically inserted into the flow guide cavity 53; an elastic steel bar 10 is arranged in the elastic water absorption expansion strip 9; during operation, after the two prefabricated members are assembled, at the moment, the plurality of flow guide cavities 53 formed in the rotating block 5 can be aligned with the plurality of inserting cavities 32, the upper ends of the flow guide cavities 53 are communicated with the cross slot cavity 51, when an assembler injects concrete slurry into the cross slot cavity 51, the concrete slurry can correspondingly flow into the plurality of inserting cavities 32 through the plurality of flow guide cavities 53, the elastic water-absorbing expansion strips 9 are arranged in the inserting cavities 32, the top ends of the elastic water-absorbing expansion strips 9 are elastically inserted into the flow guide cavities 53, the elastic water-absorbing expansion strips 9 can absorb partial moisture of the concrete slurry along with the continuous inflow of the concrete slurry in the flow guide cavities 53 and the inserting cavities 32, so that the elastic water-absorbing expansion strips 9 can be expanded and hardened, the elastic steel bars 10 arranged in the elastic water-absorbing expansion strips 9 can further improve the strength of the elastic water-absorbing expansion strips 9 after being hardened, and then increased the stability of turning block 5 installation and the fastness of connection in rotating recess 31, when effectively preventing the prefab to produce the vibration, lead to turning block 5 to produce wobbling phenomenon in rotating recess 31, and then the stability of connecting between the influence prefab.
As an embodiment of the present invention, the outer end wall of the elastic water-absorbing and expanding strip 9 is provided with a plurality of water guide holes 91; the elastic reinforcing steel bar 10 is inserted into the elastic water-absorbing expansion strip 9 in a sliding manner; the water guide hole 91 is communicated with the outer wall of the elastic steel bar 10; the during operation, when the concrete grout enters into grafting chamber 32 in, partial concrete grout can permeate the outer wall of elastic reinforcement 10 through water guide hole 91, and bond on the outer wall of elastic reinforcement 10, after the concrete grout solidifies, the concrete grout can form the knub form at the both ends of water guide hole 91, the fastness of being connected between elastic reinforcement 10 outer wall and the elasticity water absorption expansion strip 9 has not only been increased, the knub form that a plurality of water guide hole 91 outer ends produced can make the elasticity water absorption expansion strip 9 outside form a large amount of knurls simultaneously, and then make and pour into the concrete grout and can the efficient bond on grafting chamber 32 and the outer wall of elasticity water absorption expansion strip 9, prevent because elasticity water absorption expansion strip 9 is non-concrete material, and then influence the stability of elasticity water absorption expansion strip 9 at grafting chamber 32 internally mounted.
As an embodiment of the present invention, a plurality of through cavities 61 are uniformly formed in the dovetail fixture block 6, and the through cavities 61 are communicated with a cross slot cavity 51 inside a rotating block 5 rotatably disposed at an end of the horizontal plate 2; the penetrating cavity 61 is internally provided with a mesh film ball 20, and a plurality of water-absorbing swelling particles are filled in the mesh film ball 20; when the dovetail slot is in operation, when concrete slurry is injected into the cross slot cavity 51 of the rotating block 5 provided with the dovetail clamping block 6, the concrete slurry in the cross slot cavity 32 can be injected into the through cavity 61 through the cross slot cavity 32, the concrete slurry entering the through cavity 61 can be contacted with the water-absorbing expansion particles through the mesh film balls 20, so that the water-absorbing expansion particles are expanded and hardened, the expansion and hardening of a plurality of water-absorbing expansion particles can extrude and crush the mesh film balls 20, so that the hardened water-absorbing expansion particles fall onto the slot walls of the dovetail slot, meanwhile, the concrete slurry penetrating the cavity 61 can also penetrate into the slot walls of the dovetail slot, further, the dovetail clamping block 6 and the dovetail block 7 which are mutually inserted can be mutually bonded and fixed through the concrete slurry injected inside, and the situation that the concrete slurry smeared on the outer walls of the dovetail clamping block 6 and the dovetail block 7 is uneven is prevented, and then the phenomenon that the dovetail clamping block 6 is separated from the dovetail block 7 is caused, and the stable connection between the prefabricated parts is influenced.
As an embodiment of the present invention, a plurality of water suction cavities 72 are uniformly formed in the dovetail slot 71, and the bottom ends of the water suction cavities 72 are communicated with a cross slot cavity 51 formed in a rotating block 5 rotatably disposed at the top end of the vertical plate 3; the top ends of the water suction cavities 72 are aligned with the through cavities 61 formed in the dovetail clamping blocks 6 which are in sliding insertion connection, a plurality of water suction expansion columns 30 are vertically arranged in the water suction cavities 72, and the water suction expansion columns 30 are supported in the water suction cavities 72 through the mesh layer 40; when the dovetail clamping block 6 is inserted into the dovetail clamping groove 71 in a sliding manner, the water absorption cavities 72 formed in the dovetail clamping groove 71 can be aligned with the through cavities 61 in the dovetail clamping block 6, and further when the rotating block 5 connected with the dovetail clamping block 6 and the rotating block 5 connected with the dovetail block 7 are simultaneously injected with concrete slurry, the concrete slurry injected into the rotating block 5 connected with the dovetail block 7 can be distributed to the water absorption cavities 72, one part of the concrete slurry injected into the water absorption cavities 72 can be contacted with the water absorption expansion columns 30 arranged in the water absorption expansion columns through the mesh layer 40, so that the water absorption expansion columns 30 are expanded, meanwhile, the concrete slurry can push the mesh layer 40 to move above the water absorption cavities 72, and then the mesh layer 40 moves upwards to drive the water absorption expansion columns 30 to be inserted into the through cavities 61, and the water absorption expansion particles expanded in the through cavities 61 can correspondingly fall into the water absorption holes, make concrete slurry, a plurality of expansion columns 30 that absorb water and the expansion granule that absorbs water can absorb water the chamber 72 after the sclerosis with run through the spacing post of inserting of shape stereoplasm in the chamber 61, and then can prevent that the forked tail piece 7 and the forked tail fixture block 6 that mutual slip pegged graft from producing the slip phenomenon of dislocation, further improve the stability and the fastness that the forked tail fixture block 6 slided and pegged graft in forked tail piece 7.
As an embodiment of the present invention, the upper surface of the mesh layer 40 at the top end of the water suction cavity 72 is provided with a plurality of conical protrusions 401; the bottom end of the mesh film ball 20 is provided with a plurality of hard conical sheets, and the hard conical sheets and the conical bulges 401 are arranged in a staggered manner; during operation, can promote the mesh layer 40 that absorbs water the chamber 72 top and upwards remove under the pushing force of a plurality of upwards inflation of the inflation post 30 that absorb water of mesh layer 40, make the protruding 401 of toper of mesh layer 40 upper surface setting can enter into and run through in the chamber 61, the protruding 401 of toper that mesh film ball 20 bottom end face set up simultaneously can extrude mesh layer 40 on, and then make the protruding 401 of toper on the mesh layer 40 and the protruding 401 of toper of mesh film ball 20 can form the extrusion force each other and extrude the breakage with the position of its contact, make mesh layer 40 and mesh film ball 20 can quick broken operation, and then be convenient for absorb water chamber 72 and run through chamber 61 and communicate.
As an embodiment of the present invention, a plurality of overflow ports 54 are uniformly formed on the rotating block 5, and the plurality of overflow ports 54 are all communicated with the cross slot cavity 51; the sealing blocks 50 are movably inserted into the overflow ports 54; during operation, when the rotating column 4 needs to rotate, an operator can take the sealing block 50 down from the overflow port 54, then the rotating block 5 can make the overflow port 54 align with the plugging cavity 32 when rotating, so that the rotating block 5 after rotating can be communicated with the plugging cavity 32, and concrete injected into the rotating block 5 enters the plugging cavity 32 through the overflow port 54; then the sealing block 50 that will take off inserts in the water conservancy diversion chamber 53, and then the water conservancy diversion chamber 53 of being convenient for forms overflow mouth 54 for concrete thick liquids can fully be poured into to the turning block 5 inside, improve the bonding fastness between the prefab of concrete thick liquids to splicing each other.
As an embodiment of the present invention, the size of the overflow ports 54 is the same as the size of the diversion cavities 53; a plurality of metal strips 60 are uniformly arranged on the inner side wall of the sealing block 50, and the metal strips 60 are inserted into the overflow port 54; during operation, when the rotating block 5 rotates, the plurality of overflow ports 54 formed in the rotating block 5 can align with the plurality of inserting cavities 32, so that the elastic water-absorbing expansion strips 9 extending out of the inserting cavities 32 can be elastically inserted into the overflow ports 54, and the overflow ports 54 can be communicated with the inserting cavities 32; when the sealing block 50 is inserted into the corresponding diversion cavity 53, the metal strip 60 arranged on the end face of the sealing block 50 can be inserted into the diversion cavity 53, when concrete slurry flows into the diversion cavity 53, the concrete slurry can be adsorbed and wrapped on the metal strip 60, and after the concrete slurry is solidified, the sealing plug can be fixed by the concrete slurry wrapped on the metal strip 60, so that the sealing plug can be effectively prevented from being separated.
As an embodiment of the present invention, the bottom ends of the plurality of plugging cavities 32 are mutually communicated through a communicating cavity 33, and a metal elastic sheet 70 is inserted into the communicating cavity 33; the upper end surfaces of the metal elastic sheets 70 are all connected with elastic steel bars 10; the during operation, when having poured into the concrete thick liquids in grafting chamber 32, the concrete thick liquids can flow into in the intercommunication chamber 33 along grafting chamber 32, simultaneously the concrete thick liquids can adsorb the parcel on metal shrapnel 70 in intercommunication chamber 33, and then can be fixed metal shrapnel 70 in the intercommunication chamber 33, simultaneously the concrete thick liquids adsorbs the elasticity reinforcing bar 10 that can be connected above metal shrapnel 70 to metal shrapnel 70's parcel, and then be convenient for carry out the elastic fixation operation with a plurality of elasticity water absorption expansion strips 9 behind the expansion hardening, effectively prevent because a plurality of elasticity water absorption expansion strips 9 exist each other in grafting chamber 32, and then when the prefab produces and rocks, turning block 5 produces the swing phenomenon in rotating groove 31, and then influence the stability of connecting between the prefab.
As an embodiment of the present invention, the outer wall of the elastic reinforcement 10 is provided with the protruding sheets 101 in layers, and the protruding sheets 101 are slidably inserted into the water guide holes 91; during operation, when concrete slurry passes through water guide hole 91 and elastic reinforcement 10 contact, concrete slurry in the water guide hole 91 can wrap up on bur piece 101, and then can fix elastic reinforcement 10 to elasticity water absorption expansion strip 9 through the concrete, has improved metal shrapnel 70 that elastic reinforcement 10 lower extreme is connected simultaneously and has carried out the effect fixed with elasticity water absorption expansion strip 9.
As an embodiment of the present invention, a convex ball 55 is formed on the inner cavity wall of the cross slot cavity 51, and a metal sheet is exposed at the top end of the convex ball 55; during operation, when the concrete slurry is injected into the cross splicing cavity 32, the concrete slurry can be wrapped on the convex balls 55, and the concrete slurry can be condensed on the metal sheet, so that the stability and the firmness of the concrete slurry formed in the cross splicing cavity 32 are improved.
The specific working process is as follows:
when the two L-shaped precast concrete pieces are assembled, if the horizontal plate 2 of one precast concrete piece is assembled to the top end of the vertical plate 3 of the other precast concrete piece, an assembler can firstly draw out the cross plug-in pipe 8 inserted above the vertical plate 3 of one precast concrete piece from the rotating column 4, then the assembler needs to rotate the dovetail block 7 installed in the rotating groove 31 above the vertical plate 3 through the rotating block 5 to be right above the vertical plate 3, then the assembler slides the dovetail block 6 arranged below the end part of the horizontal plate 2 of the other precast concrete piece into the dovetail clamping groove 71 arranged on the adjusted dovetail block 7, then inserts the cross plug-in pipe 8 into the cross through hole 41 and the cross plug-in groove cavity 51 above the vertical plate 3, so that the cross plug-in pipe 8 can perform the operation of limiting rotation on the dovetail block 7, the phenomenon that prefabricated parts which are mutually assembled swing is prevented, then, an assembler injects viscous concrete slurry into a cross slot cavity 51 through a cross splicing pipe 8 spliced by the end parts of a vertical plate 3 and a horizontal plate 2, and then the phenomenon that the cross splicing pipe 8 is separated from the interior of the vertical plate 3 and the interior of the horizontal plate 2 after the concrete slurry is solidified can be prevented, meanwhile, the assembler uniformly paints the concrete slurry on the connecting part between a dovetail clamping block 6 and a dovetail block 7, so that the phenomenon that the dovetail clamping block 6 is separated from the interior of the dovetail block 7 is prevented, and further, the stability and the firmness of connection between the prefabricated parts which are mutually assembled are improved; if need assemble the horizontal plate 2 of one of them prefab to the side of the vertical plate 3 of another prefab, the assembly personnel rotate the forked tail piece 7 of installing on the vertical plate 3 of one of them prefab to the lateral surface of vertical plate 3 earlier, then peg graft fixedly through cross plug tube 8, then rotate the forked tail fixture block 6 that the horizontal plate 2 tip of another prefab set up to with the upper surface parallel and level of horizontal plate 2.
In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (11)
1. An L-shaped concrete prefabricated part comprises a main plate body (1); the main plate body (1) is formed by pouring concrete; the method is characterized in that: the main plate body (1) comprises a horizontal plate (2) and a vertical plate (3); the end surfaces of the horizontal plate (2) and the vertical plate (3) are both provided with a rotating groove (31), and a rotating block (5) is rotatably arranged in each rotating groove (31) through a rotating column (4); a dovetail clamping block (6) is fixed on the bottom end face of a rotating block (5) which is rotatably arranged at the end part of the horizontal plate (2); a dovetail block (7) is fixed on the end face of a rotating block (5) rotatably arranged at the top end of the vertical plate (3), and a dovetail clamping groove (71) is formed in the upper end of the dovetail block (7); the dovetail clamping grooves (71) are used for being in mutual sliding, inserting and contacting with dovetail clamping blocks of other prefabricated parts; a cross slot cavity (51) is formed in each rotating block (5), and rotating cavities (52) are formed in two ends of each cross slot cavity (51); a cross through hole (41) is formed in the rotating column (4), and the cross through hole (41) is aligned with the cross slot cavity (51); the rotating column (4) is rotatably arranged in the rotating cavity (52); a cross-shaped inserting pipe (8) is inserted in the cross-shaped through hole (41) in a sliding manner, and the inner end part of the cross-shaped inserting pipe (8) is inserted in the cross-shaped slot cavity (51) in a sliding manner; the cross plug-in pipe (8) is communicated with the cross slot cavity (51).
2. An L-shaped concrete preform as claimed in claim 1, wherein: a plurality of plug-in cavities (32) are uniformly formed in the end face of the rotating groove (31); the surfaces of the rotating blocks (5) attached to the rotating grooves (31) are provided with a plurality of flow guide cavities (53), and the flow guide cavities (53) are aligned with the insertion cavities (32); the diversion cavity (53) is communicated with the cross slot cavity (51); elastic water-absorbing expansion strips (9) are inserted into the insertion cavities (32), and the top ends of the elastic water-absorbing expansion strips (9) are elastically inserted into the flow guide cavity (53); and an elastic steel bar (10) is arranged in the elastic water absorption expansion strip (9).
3. An L-shaped concrete preform as claimed in claim 2, wherein: a plurality of water guide holes (91) are formed in the outer end wall of the elastic water absorption expansion strip (9); the elastic steel bar (10) is inserted into the elastic water-absorbing expansion strip (9) in a sliding manner; the water guide hole (91) is communicated with the outer wall of the elastic steel bar (10).
4. An L-shaped concrete preform as claimed in claim 3, wherein: a plurality of through cavities (61) are uniformly formed in the dovetail clamping block (6), and the through cavities (61) are communicated with a cross slot cavity (51) in a rotating block (5) which is rotatably arranged at the end part of the horizontal plate (2); the penetrating cavity (61) is internally provided with a mesh film ball (20), and a plurality of water-absorbing swelling particles are filled in the mesh film ball (20).
5. An L-shaped concrete preform as claimed in claim 4, wherein: a plurality of water suction cavities (72) are uniformly formed in the dovetail clamping groove (71), and the bottom ends of the water suction cavities (72) are communicated with a cross slot cavity (51) formed in a rotating block (5) which is rotatably arranged at the top end of the vertical plate (3); a plurality of cavities (61) that run through that set up on the top of a plurality of chamber (72) that absorb water and the forked tail fixture block (6) of sliding plug-in connection align, and absorb water chamber (72) inside vertically be provided with a plurality of inflation posts (30) that absorb water, and a plurality of inflation posts (30) that absorb water support through mesh layer (40) and absorb water in the chamber (72).
6. An L-shaped concrete preform as claimed in claim 5, wherein: a plurality of conical bulges (401) are arranged on the upper surface of the mesh layer (40) at the top end of the water suction cavity (72); the bottom end of the mesh film ball (20) is provided with a plurality of hard conical sheets (201), and the hard conical sheets (201) and the conical bulges (401) are arranged in a staggered mode.
7. An L-shaped concrete preform as claimed in claim 6, wherein: a plurality of overflow ports (54) are uniformly formed in the rotating block (5), and the overflow ports (54) are communicated with the cross slot cavity (51); the inner parts of the overflow ports (54) are movably inserted with sealing blocks (50).
8. An L-shaped concrete preform as claimed in claim 7, wherein: the sizes of the overflow ports (54) are the same as the sizes of the diversion cavities (53); the inner side wall of the sealing block (50) is uniformly provided with a plurality of metal strips (60), and the metal strips (60) are inserted into the overflow port (54).
9. An L-shaped concrete preform as claimed in claim 8, wherein: the bottom ends of the plurality of inserting cavities (32) are mutually communicated through communicating cavities (33), and metal elastic sheets (70) are inserted in the communicating cavities (33); the upper end faces of the metal elastic sheets (70) are connected with elastic steel bars (10).
10. An L-shaped concrete preform as claimed in claim 9, wherein: the outer wall of the elastic steel bar (10) is provided with the protruding sheets (101) in a layered mode, and the protruding sheets (101) are inserted into the water guide holes (91) in a sliding mode.
11. An L-shaped concrete preform as claimed in claim 9, wherein: a convex ball (55) is formed on the inner cavity wall of the cross slot cavity (51), and a metal sheet is exposed at the top end of the convex ball (55).
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| CN202010947636.2A CN112196095B (en) | 2020-09-10 | 2020-09-10 | L-shaped concrete prefabricated member |
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| CN209891465U (en) * | 2019-03-16 | 2020-01-03 | 浙江高盛钢结构有限公司 | Assembled outer wall |
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| US9238155B2 (en) * | 2014-06-19 | 2016-01-19 | Mark A. Borchardt | Concrete deck tie-off anchor point and system |
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| CN2424617Y (en) * | 2000-03-30 | 2001-03-28 | 孙健 | L-shape prefabricated vertical greening structure member |
| CN201828149U (en) * | 2010-10-21 | 2011-05-11 | 淄博鲁铭高温材料科技有限公司 | Special-shaped brick for side wall of circular cooler |
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