CN108894428B - Prefabricated slab with embedded fasteners and manufacturing method thereof - Google Patents
Prefabricated slab with embedded fasteners and manufacturing method thereof Download PDFInfo
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- CN108894428B CN108894428B CN201810648132.3A CN201810648132A CN108894428B CN 108894428 B CN108894428 B CN 108894428B CN 201810648132 A CN201810648132 A CN 201810648132A CN 108894428 B CN108894428 B CN 108894428B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
- E04C2/06—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres reinforced
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The invention discloses a prefabricated slab with pre-embedded fasteners, which comprises a steel bar layer positioned in the prefabricated slab, wherein the steel bar layer comprises longitudinally arranged steel bars and transversely arranged steel bars, two ends of the longitudinally arranged steel bars and the transversely arranged steel bars respectively penetrate through the side edge of the prefabricated slab and extend to the outside of the prefabricated slab, a plurality of nut-type fasteners are pre-embedded in the prefabricated slab, connecting ports of the nut-type fasteners are arranged on the surface of the prefabricated slab, and the steel bar layer and the nut-type fasteners are pre-embedded in light concrete. The invention discloses a precast slab embedded with a nut-type fastener, which solves the problems that the existing sticky hook has insufficient adhesive force and the cement wall surface is not easy to install screws, and has simple operation method and strong practicability; the manufacturing method of the prefabricated plate with the fastener pre-embedded on the single surface or the double surfaces, disclosed by the invention, has the advantages of simple operation process and easiness in industrial production.
Description
Technical Field
The invention belongs to the technical field of building prefabricated members, and particularly relates to a prefabricated plate with a fastener embedded in the prefabricated plate and a manufacturing method of the prefabricated plate.
Background
In life, some objects such as clothes racks, calligraphy and painting, televisions, air conditioners and the like need to be fixed on wall surfaces inevitably, but the existing wall surfaces are mostly concrete wall surfaces, electric drill drilling is needed when a nut type fastener is installed, the operation process is complex, the adhesive force of a common adhesive hook is not easy to fall off, and therefore a prefabricated slab with a nut type fastener embedded in is needed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a precast slab with a nut-type fastener embedded therein and a manufacturing method thereof.
In order to achieve the above object, the technical solution of the present invention is to provide a precast slab with a nut-type fastener embedded therein, which includes a steel bar layer located inside the precast slab, where the steel bar layer includes longitudinally arranged steel bars and transversely arranged steel bars, both ends of the longitudinally arranged steel bars and the transversely arranged steel bars respectively penetrate through the side edges of the precast slab and extend to the outside of the precast slab, a plurality of nut-type fasteners are embedded inside the precast slab, connection ports of the nut-type fasteners are disposed on the surface of the precast slab, and the steel bar layer and the nut-type fasteners are embedded in light concrete; be equipped with on the prefabricated plate and be used for the pre-buried mould of fastener, including the template, be provided with in the template and hoist and mount the piece, be provided with in the template and be the array with nut type fastener position corresponding and arrange or be the screw of staggered arrangement, install the sleeve pipe in the screw, the sleeve pipe surface is equipped with the external screw thread with screw thread looks adaptation, and annular elastic component is equipped with towards the one end of prefabricated plate to the sleeve pipe, and the stopper is installed to the sheathed tube other end, elastic component has a plurality of open slots including installing the annular elastic gasket at sleeve pipe tip, along elastic gasket's inner ring equipartition, is equipped with the end cap with sleeve pipe outer wall threaded connection on annular elastic gasket, is equipped with the axial through-hole on the end cap, and the axial through-hole diameter is greater than or equal to sheathed tube internal diameter and is less than the.
Preferably, the nut-type fastener is a plastic expansion plug, a matched screw is installed inside the plastic expansion plug, and the screw is made of a ferromagnetic material.
Preferably, the plastic expansion plugs are pre-embedded in one surface of the prefabricated plate or arranged on two surfaces of the prefabricated plate in a staggered mode, the ports of the plastic expansion plugs are located on the plate surface of the prefabricated plate, and the positions, close to the surfaces of the positions, where the plastic expansion plugs are pre-embedded, of the prefabricated plate are sunken by 0.5-3.0 cm.
Preferably, the nut-type fastener is an internal threaded pipe, a matched screw is installed inside the internal threaded pipe, the screw is made of ferromagnetic materials, one port of the internal threaded pipe is located on the surface of the prefabricated plate, a recess of 0.5-3.0 cm is formed in the position, close to the surface of the position where the internal threaded pipe is pre-embedded, of the prefabricated plate, and the other port of the internal threaded pipe is located inside the prefabricated plate.
Preferably, the nut-type fasteners are arrayed or staggered in the prefabricated slab, the distance between adjacent fasteners is 8-15 cm, the distance between the peripheral nut-type fasteners and the edge of the slab surface of the prefabricated slab is 8-15 cm, and the nut-type fasteners are set to be different in specification.
The embedding method for embedding the fastener in the single face of the precast slab is characterized by comprising the following steps of:
s1: preparation work: be used for the pre-buried template of fastener in the preparation prefabricated plate, fix annular elastic gasket in sheathed tube one end with the end cap, dock the one end of the port of plastics bloated stopper or internal thread pipe and the outer terminal surface of end cap, fix plastics bloated stopper or internal thread pipe outside the cover pipe with the screw at the intraductal cover, and with the elastic gasket centre gripping between the bottom surface of screw with plastics bloated stopper or internal thread pipe and screw cap, install the intraductal portion of cover from sheathed tube another port with the stopper, and the sleeve pipe one end precession screw that will install the stopper is inside, make end cap and template zonulae occludens.
S2: embedding a nut type fastener: after concrete mortar in the prefabricated slab forming die is poured and leveled, the die plate which is pre-provided with the plastic expansion plug or the internal threaded pipe is placed on the upper surface of the prefabricated slab forming die through a hoisting piece on the die plate, wherein one surface provided with the plastic expansion plug or the internal threaded pipe faces the upper surface of the prefabricated slab forming die, so that the die plate and the prefabricated slab forming die are completely attached.
S3: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
The embedding method for the fasteners pre-embedded in the two surfaces of the prefabricated slab is characterized by comprising the following steps of:
s1: preparation work: be used for the pre-buried template of fastener in two prefabricated slabs of preparation, fix annular elastic gasket in sheathed tube one end with the end cap, dock the one end of the port of plastics bloated stopper or internal thread pipe and the outer terminal surface of end cap, fix plastics bloated stopper or internal thread pipe outside the cover pipe with the screw at the intraductal cover, and with the elastic gasket centre gripping between the bottom surface of screw with plastics bloated stopper or internal thread pipe and screw cap, install the intraductal portion of cover from sheathed tube another port with the stopper, and the sleeve pipe one end precession screw that will install the stopper is inside, make end cap and template zonulae occludens.
S2: embedding a lower surface nut type fastener: and laying one template provided with the plastic expansion plug or the internal threaded pipe on the lower end face of the inner part of the precast slab forming die, wherein the side provided with the plastic expansion plug or the internal threaded pipe faces upwards, and pouring lightweight concrete.
S3: embedding an upper surface nut type fastener: after concrete mortar in the prefabricated slab forming die is poured and leveled, another template pre-provided with a plastic expansion plug or an internal threaded pipe is placed on the upper surface of the prefabricated slab forming die through a hoisting piece on the template, wherein one surface provided with the plastic expansion plug or the internal threaded pipe faces the upper surface of the prefabricated slab forming die, so that the template and the prefabricated slab forming die are completely attached to each other
S4: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
The invention has the advantages and beneficial effects that:
1. nut type fasteners with different specifications are pre-embedded in the prefabricated plate, so that a user can conveniently select the nut type fasteners with corresponding bearing capacity according to needs, and the problem that the existing sticky hooks are not easy to fall off due to insufficient adhesive force is solved.
2. The distance between the nut of the screw and the board surface of the precast slab is less than 1cm, the wall surface is smeared by using paint when the precast slab is used, the position of the nut-type fastener is the same as that of a common wall surface when the precast slab is not used, the position of the nut is found by a magnet when the precast slab is used, the nut-type fastener can be found by prying the concrete layer, and the screw can be screwed out for use, so that the operation is simple;
3. the template for preparing the prefabricated plate with the pre-embedded fastener is simple in assembly mode with the existing prefabricated plate mold, and the drying and solidification efficiency of the prefabricated plate is not influenced due to the fact that the air holes are formed in the template;
4. the method for preparing the prefabricated plate with the nut-type fastener pre-embedded on one side or both sides has simple operation procedures and is easy to realize industrial production.
Drawings
FIG. 1 is a front view of a prefabricated panel;
FIG. 2a is a sectional view taken along the direction AA in FIG. 1, and FIG. 2b is a sectional view taken along the direction AA in another embodiment in FIG. 1;
FIG. 3 is an enlarged view at H of FIG. 2 a;
FIG. 4 is a bottom view of the die plate;
FIG. 5 is a sectional view taken in the direction of FF in FIG. 4;
FIG. 6 is an enlarged view taken at I in FIG. 4;
FIG. 7 is a schematic view of a resilient pad construction;
FIG. 8 is a top view of the auxiliary template;
fig. 9 is a sectional view taken in the direction SS of fig. 8.
Description of reference numerals:
1. prefabricating a slab; 2. a reinforcing steel bar layer; 3. a nut-type fastener; 4. concrete; 5. a screw; 6. a template; 7. hoisting a piece; 8. a screw hole; 9. a sleeve; 10. an end cap; 11. a plug; 12. an elastic pad; 13. an open slot; 14. air holes are formed; 15. an auxiliary template; 16. the nut-type fastener is snapped into the hole.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 and 4-7, the prefabricated slab comprises a reinforcing steel bar layer 2 positioned inside a prefabricated slab 1, wherein the reinforcing steel bar layer 2 comprises longitudinally arranged reinforcing steel bars and transversely arranged reinforcing steel bars, two ends of the longitudinally arranged reinforcing steel bars and two ends of the transversely arranged reinforcing steel bars respectively penetrate through the side edges of the prefabricated slab 1 and extend to the outside of the prefabricated slab 1, a plurality of nut-type fasteners 3 are embedded inside the prefabricated slab 1, connecting ports of the nut-type fasteners 3 are arranged on the surface of the prefabricated slab 1, and the reinforcing steel bar layer 2 and the nut-type fasteners 3 are embedded in lightweight concrete 4; be equipped with on the prefabricated plate and be used for the pre-buried mould of fastener, including template 6, be provided with hoist and mount piece 7 on the template 6, be provided with on the template 6 with 3 positions of nut type fastener be the array arrange or be the screw 8 of staggered arrangement, install sleeve pipe 9 in the screw 8, the sleeve pipe 9 surface is equipped with the external screw thread with 8 screw thread looks adaptations of screw, annular elastic component is equipped with towards the one end of prefabricated plate to sleeve pipe 9, stopper 14 is installed to the other end of sleeve pipe 9. Elastic component has a plurality of open slots 13 including installing annular elastic gasket 12 at the sleeve pipe tip, along elastic gasket 12's inner ring equipartition, is equipped with the end cap 10 with sleeve pipe 9 outer wall threaded connection on annular elastic gasket 12, is equipped with the axial through hole on the end cap 10, and the internal diameter that the axial through hole diameter is more than or equal to sleeve pipe 9 is less than elastic gasket 12 external diameter, and the height of end cap 10 is 0.5~3cm still be provided with bleeder vent 14 on the template 6.
As shown in fig. 2a, 2b and 3, the nut-type fastener 3 is a plastic expansion plug, and a matching screw 5 is installed inside the plastic expansion plug, wherein the screw 5 is made of a ferromagnetic material. The plastic expansion plug is pre-embedded in one surface or two surfaces of the prefabricated plate 1, the port of the plastic expansion plug is located on the plate surface of the prefabricated plate 1, and the position, close to the surface where the plastic expansion plug is pre-embedded, of the prefabricated plate 1 is sunken by 0.5-3.0 cm.
In the preferred mode of this embodiment, the nut-type fastener is an internal threaded tube, a mating screw is installed inside the internal threaded tube, the screw is made of a ferromagnetic material, one end of the internal threaded tube is located on the surface of the prefabricated plate, a recess of 0.5-3.0 cm is formed in the position, close to the surface, of the prefabricated plate, where the internal threaded tube is pre-embedded, and the other end of the internal threaded tube is located inside the prefabricated plate.
In the preferred mode of the embodiment, the nut-type fasteners are arrayed or staggered in the prefabricated slab, the distance between adjacent fasteners is 8-15 cm, the distance between the peripheral nut-type fasteners and the edge of the slab surface of the prefabricated slab is 8-15 cm, and the nut-type fasteners are set to be different in specification.
The embedding method for embedding the fastener in the single face of the precast slab is characterized by comprising the following steps of:
s1: preparation work: the method comprises the steps of manufacturing a template 6 for pre-embedding a fastener in a prefabricated plate 1, fixing an annular elastic gasket 12 at one end of a sleeve 9 by using an end cap 10, butting a port of a plastic expansion plug or one end of an internal thread pipe with the outer end face of the end cap 10, fixing the plastic expansion plug or the internal thread pipe on the sleeve 9 by using a screw 5 in the sleeve 9, installing a plug 11 into the sleeve 9 from the other port of the sleeve 9, screwing one end of the sleeve 9 provided with the plug 11 into a screw hole 8, and enabling the end cap 10 to be tightly connected with the template 6.
S2: embedding a nut type fastener: after concrete mortar in the precast slab forming die is poured and leveled, the template 6 pre-installed with the plastic expansion plug or the internal threaded pipe is placed on the upper surface of the precast slab forming die through the hoisting piece 7 on the template 6, wherein one surface installed with the plastic expansion plug or the internal threaded pipe faces to the upper surface of the precast slab forming die, so that the template 6 is completely attached to the precast slab forming die.
S3: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
The embedding method for the fasteners pre-embedded in the two surfaces of the prefabricated slab is characterized by comprising the following steps of:
s1: preparation work: the method comprises the steps of manufacturing a template 6 for pre-embedding a fastener in two prefabricated plates 1, fixing an annular elastic gasket 12 at one end of a sleeve 9 by using an end cap 10, butting a port of a plastic expansion plug or one end of an internal thread pipe with the outer end face of the end cap 10, fixing the plastic expansion plug or the internal thread pipe on the sleeve 9 by using a screw 5 in the sleeve 9, installing a plug into the sleeve 9 from the other port of the sleeve 9, screwing one end of the sleeve 9 provided with the plug into a screw hole 8, and enabling the end cap 10 to be tightly connected with the template 6.
S2: embedding a lower surface nut type fastener: and laying one template 6 provided with the plastic expansion plug or the internal threaded pipe on the lower end face of the inner part of the precast slab forming die, wherein the side provided with the plastic expansion plug or the internal threaded pipe faces upwards, and pouring lightweight concrete.
S3: embedding an upper surface nut type fastener: after concrete mortar in the precast slab forming die is poured and leveled, another die plate 6 which is pre-provided with a plastic expansion plug or an internal threaded pipe is arranged on the upper surface of the precast slab forming die through a hoisting piece 7 on the die plate 6, wherein one surface provided with the plastic expansion plug or the internal threaded pipe faces to the upper surface of the precast slab forming die, so that the die plate 6 and the precast slab forming die are completely attached
S4: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
The secondary use method of the fastener by the fastener pre-buried die for single-side pre-buried fastener comprises the following steps:
as shown in fig. 8 and 9:
s1: preparation work: an auxiliary template 15 is manufactured, nut type fastener clamping holes which are arranged in an array or staggered mode are formed in the auxiliary template and correspond to the positions of screw holes 8 in the template 6, a plastic expansion plug or an internal thread pipe is installed in the nut type fastener clamping holes 16 in the auxiliary template 15, the plug 11 in a sleeve 9 on the template 6 is pulled out, the template 6 is placed above the auxiliary template 15, one end of a port of the plastic expansion plug or one end of the internal thread pipe is in butt joint with the outer end face of an end cap 10, and the plastic expansion plug or the internal thread pipe is fixed on the sleeve 9 in the sleeve 9 through a screw 5.
S2: embedding a nut type fastener: after concrete mortar in the precast slab forming die is poured and leveled, the template 6 pre-installed with the plastic expansion plug or the internal threaded pipe is placed on the upper surface of the precast slab forming die through the hoisting piece 7 on the template 6, wherein one surface installed with the plastic expansion plug or the internal threaded pipe faces to the upper surface of the precast slab forming die, so that the template 6 is completely attached to the precast slab forming die.
S3: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
The secondary use method of the double-sided pre-buried fastener by the pre-buried die of the fastener comprises the following steps:
s1: preparation work: manufacturing two auxiliary templates 15, arranging nut type fastener clamping holes 16 which are arranged in an array or staggered mode and correspond to the positions of screw holes 8 in the templates 6 on the auxiliary templates, installing a plastic expansion plug or an internal thread pipe in the nut type fastener clamping holes 16 on the auxiliary templates 15, pulling out a plug 11 in a sleeve 9 on the templates 6, placing the templates 6 above the auxiliary templates 15, enabling one end of a port of the plastic expansion plug or one end of the internal thread pipe to be in butt joint with the outer end face of an end cap 10, and fixing the plastic expansion plug or the internal thread pipe on the sleeve 9 by using screws 5 in the sleeve 9.
S2: embedding a lower surface nut type fastener: and laying the template 6 provided with the plastic expansion plug or the internal threaded pipe on the lower end face of the inner part of the precast slab forming die, wherein the side provided with the plastic expansion plug or the internal threaded pipe faces upwards, and pouring lightweight concrete mortar.
S3: embedding an upper surface nut type fastener: after concrete mortar in the precast slab forming die is poured and leveled, another die plate 6 which is pre-provided with a plastic expansion plug or an internal threaded pipe is arranged on the upper surface of the precast slab forming die through a hoisting piece 7 on the die plate 6, wherein one surface provided with the plastic expansion plug or the internal threaded pipe faces to the upper surface of the precast slab forming die, so that the die plate 6 and the precast slab forming die are completely attached
S4: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
In this embodiment, it is preferable that the nut-type fastening members are located at a depth inside the prefabricated panels that does not reach the reinforcing-bar layer or that the nut-type fastening members are arranged to be offset from the reinforcing bars.
In the preferred mode of the embodiment, in the pre-embedding process of the fastening piece, the plug is installed in the sleeve on the template, and the fastening piece on the template is not ejected out by sand when contacting with the sand in the concrete mortar, but extrudes the sand to the periphery of the fastening piece.
In the preferred mode in this embodiment, when demoulding, need not screw out stopper and screw, directly utilize hoist and mount spare on the template to pull up the template, open slot on the elastic gasket contracts simultaneously, and then the nut and the elastic gasket of screw break away from easy operation.
In the preferred mode of this embodiment, the screw cap outer side is provided with a word or cross recess.
The use method of the nut type fastener on the prefabricated plate comprises the following steps: when the prefabricated slab with the nut-type fastener pre-embedded on one side or two sides is used, paint is painted or wallpaper is pasted on the outer side of the prefabricated slab, and the position of the nut-type fastener is the same as that of a common wall surface; when the nut-type fastener on the prefabricated plate needs to be used, the accurate position of the nut-type fastener is found by utilizing the attraction between the magnet and the ferromagnetic material screw of the nut-type fastener, the paint or the wallpaper at the position of the nut-type fastener is removed, and the screw is screwed out by utilizing a screwdriver, so that the prefabricated plate can be used for fixing objects.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. The prefabricated slab with the pre-embedded fasteners is characterized by comprising a steel bar layer positioned in the prefabricated slab, wherein the steel bar layer comprises longitudinally arranged steel bars and transversely arranged steel bars, two ends of the longitudinally arranged steel bars and two ends of the transversely arranged steel bars respectively penetrate through the side edges of the prefabricated slab and extend to the outside of the prefabricated slab, a plurality of nut-type fasteners are pre-embedded in the prefabricated slab, connecting ports of the nut-type fasteners are arranged on the surface of the prefabricated slab, and the steel bar layer and the nut-type fasteners are pre-embedded in light concrete; be equipped with on the prefabricated plate and be used for the pre-buried mould of fastener, including the template, be provided with in the template and hoist and mount the piece, be provided with in the template and be the array with nut type fastener position corresponding and arrange or be the screw of staggered arrangement, install the sleeve pipe in the screw, the sleeve pipe surface is equipped with the external screw thread with screw thread looks adaptation, and annular elastic component is equipped with towards the one end of prefabricated plate to the sleeve pipe, and the stopper is installed to the sheathed tube other end, elastic component has a plurality of open slots including installing the annular elastic gasket at sleeve pipe tip, along elastic gasket's inner ring equipartition, is equipped with the end cap with sleeve pipe outer wall threaded connection on annular elastic gasket, is equipped with the axial through-hole on the end cap, and the axial through-hole diameter is greater than or equal to sheathed tube internal diameter and is less than the.
2. The precast panel embedded with the fastener according to claim 1, wherein: the nut type fastener is a plastic expansion plug, a matched screw is arranged in the plastic expansion plug, and the screw is made of ferromagnetic materials.
3. The precast panel embedded with the fastener according to claim 2, wherein: the plastic expansion plugs are pre-buried in one side of the prefabricated plate or are arranged on the two sides in a staggered mode, the ports of the plastic expansion plugs are located on the plate surface of the prefabricated plate, and the positions, close to the surface where the plastic expansion plugs are pre-buried, of the prefabricated plate are recessed by 0.5-3.0 cm.
4. The precast panel embedded with the fastener according to claim 1, wherein: the nut-type fastener is an internal threaded pipe, a matched screw is arranged in the internal threaded pipe, the screw is made of ferromagnetic materials, one end opening of the internal threaded pipe is located on the board surface of the prefabricated board, the position, close to the surface, of the prefabricated board, where the internal threaded pipe is pre-embedded, is recessed by 0.5-3.0 cm, and the other end opening of the internal threaded pipe is located in the prefabricated board.
5. The prefabricated panel with the embedded fasteners as claimed in any one of claims 1 to 4, wherein: the nut-type fasteners are arrayed or staggered in the prefabricated slab, the distance between every two adjacent fasteners is 8-15 cm, the distance between the peripheral nut-type fasteners and the edge of the slab surface of the prefabricated slab is 8-15 cm, and the nut-type fasteners are set to be different in specification.
6. The embedding method for embedding the fastener in the single face of the precast slab is characterized by comprising the following steps of:
s1: preparation work: manufacturing a template according to claim 1, fixing an annular elastic gasket at one end of a sleeve by using an end cap, butting a port of a plastic expansion plug or one end of an internal threaded pipe with the outer end surface of the end cap, fixing the plastic expansion plug or the internal threaded pipe outside the sleeve by using a screw in the sleeve, clamping the elastic gasket between the plastic expansion plug or the internal threaded pipe and the bottom surface of a screw cap by using the screw, installing a plug into the sleeve from the other port of the sleeve, screwing one end of the sleeve provided with the plug into a screw hole, and tightly connecting the end cap with the template;
s2: embedding a nut type fastener: after concrete mortar in the precast slab forming die is poured and leveled, placing a template pre-provided with a plastic expansion plug or an internal threaded pipe on the upper surface of the precast slab forming die through a hoisting piece on the template, wherein one surface provided with the plastic expansion plug or the internal threaded pipe faces the upper surface of the precast slab forming die, so that the template and the precast slab forming die are completely attached;
s3: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
7. The embedding method for the fasteners pre-embedded in the two surfaces of the prefabricated slab is characterized by comprising the following steps of:
s1: preparation work: manufacturing two templates according to claim 1, fixing an annular elastic gasket at one end of a sleeve by using an end cap, butting a port of a plastic expansion plug or one end of an internal threaded pipe with the outer end surface of the end cap, fixing the plastic expansion plug or the internal threaded pipe outside the sleeve by using a screw in the sleeve, clamping the elastic gasket between the plastic expansion plug or the internal threaded pipe and the bottom surface of a screw cap by using the screw, installing a plug into the sleeve from the other port of the sleeve, screwing one end of the sleeve provided with the plug into a screw hole, and tightly connecting the end cap with the templates;
s2: embedding a lower surface nut type fastener: laying a template provided with a plastic expansion plug or an internal threaded pipe on the lower end face of the inner part of a precast slab forming die, wherein the side provided with the plastic expansion plug or the internal threaded pipe faces upwards, and pouring lightweight concrete;
s3: embedding an upper surface nut type fastener: after concrete mortar in the precast slab forming die is poured and leveled, placing the other template pre-provided with the plastic expansion plug or the internal threaded pipe on the upper surface of the precast slab forming die through a hoisting piece on the template, wherein one surface provided with the plastic expansion plug or the internal threaded pipe faces the upper surface of the precast slab forming die, so that the template and the precast slab forming die are completely attached;
s4: and demolding and maintaining, taking down the template after the concrete of the precast slab is solidified, and maintaining the precast slab to obtain a finished precast slab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810648132.3A CN108894428B (en) | 2018-06-22 | 2018-06-22 | Prefabricated slab with embedded fasteners and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810648132.3A CN108894428B (en) | 2018-06-22 | 2018-06-22 | Prefabricated slab with embedded fasteners and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108894428A CN108894428A (en) | 2018-11-27 |
| CN108894428B true CN108894428B (en) | 2020-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810648132.3A Active CN108894428B (en) | 2018-06-22 | 2018-06-22 | Prefabricated slab with embedded fasteners and manufacturing method thereof |
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| FR2907704B1 (en) * | 2006-10-30 | 2008-12-26 | Rector Lesage Sa | METHOD FOR MOLDING A PREFABRICATED CONCRETE ELEMENT AND MOLDING MACHINE USING THE SAME |
| US8182260B2 (en) * | 2007-06-25 | 2012-05-22 | Rampf Molds Industries, Inc. | Apparatus and method for forming tapered products |
| CN201140446Y (en) * | 2007-12-13 | 2008-10-29 | 中铁二十三局集团有限公司 | Easily doffing mode casing tube positioning device |
| CN201679137U (en) * | 2010-04-07 | 2010-12-22 | 燕山大学 | Multifunctional building block capable of identifying positions of preformed holes |
| CN204263340U (en) * | 2014-11-28 | 2015-04-15 | 中铁二十三局集团第二工程有限公司 | The punching block that III molded cannula installed by rod member located rod member and utilizes nylon to locate by a kind of nylon |
| CN207513002U (en) * | 2017-09-26 | 2018-06-19 | 广东省建筑科学研究院集团股份有限公司 | A kind of concrete prefabricated wallboard |
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