CN215716049U

CN215716049U - Prefabricated concrete sandwich heat preservation wallboard connecting piece

Info

Publication number: CN215716049U
Application number: CN202120927219.1U
Authority: CN
Inventors: 张付强; 刘运林; 陈旭东; 何夕平; 胡桥
Original assignee: Anhui Jianzhu University
Current assignee: Anhui Jianzhu University
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-02-01
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a prefabricated concrete sandwich heat-insulation wallboard connecting piece, and particularly relates to the field of building external wallboard connecting pieces. The connecting piece of the prefabricated concrete sandwich heat-insulation wallboard is connected with the connecting steel bars in the inner and outer panels through the FRP anchoring hooks, so that the anchoring performance between the inner and outer panels of the connecting piece is greatly enhanced, and meanwhile, the connecting piece is made of FRP materials, so that the cold and heat bridge effect can be further avoided.

Description

Prefabricated concrete sandwich heat preservation wallboard connecting piece

Technical Field

The utility model relates to the technical field of building external wall panel connecting pieces, in particular to a connecting piece of a prefabricated concrete sandwich heat-insulation wall panel.

Background

The connecting piece is used for connecting three parts of the prefabricated sandwich heat-insulation wall together, so that the stress performance of the prefabricated sandwich heat-insulation wall under the combination of multiple loads is considered, and the influence of the prefabricated sandwich heat-insulation wall on the heat-insulation performance, the durability and the fire resistance of the prefabricated sandwich heat-insulation wall is also considered in the using process. The common steel bar connecting piece has low manufacturing cost and convenient installation, but has high heat conductivity coefficient, and the steel bar connecting piece has poor corrosion resistance, thereby easily causing potential safety hazards of the wall body. As a connecting piece of a heat-insulating wall board, the following requirements are met: the strength and the rigidity are enough, so that the connection is ensured to be safe and reliable; the heat transfer can be blocked, and cold and heat bridges are prevented from being formed, so that the heat preservation effect is influenced; and thirdly, the heat insulation board has a certain limiting effect, and prevents the inner leaf plate and the outer leaf plate concrete plate from extruding heat insulation materials in the manufacturing process, so that the heat insulation board is excessively compressed and deformed to influence the heat insulation effect.

At present, fiber plastic (FRP) connecting pieces are mainly adopted as prefabricated concrete sandwich heat-insulation wall board connecting pieces. The fiber plastic (FRP) connecting piece is a key part for connecting concrete slabs on the inner layer and the outer layer of the precast concrete sandwich heat-insulation wall body, and mainly bears pulling load and shearing load in the wall body. The bonding area and the connection form of the FRP connecting piece and the precast concrete sandwich heat-insulation composite wall body are not perfect enough, so that the anchoring performance is low.

The retrieved prefabricated concrete sandwich heat-insulation wallboard connecting piece comprises the following components:

utility model patent granted Specification CN202020561860.3 discloses a heat preservation wallboard connecting piece, including last connection piece, lower link, connecting rod, go up and be connected through the connecting rod between connection piece and the lower link, be equipped with the reinforcing bar hole on last connection piece, the lower link. This heat preservation wallboard connecting piece is used for connecting lower floor concrete placement layer and upper concrete connection layer, and the reinforcing bar hole on upper and lower connection piece is used for adjusting counterpoint and being connected with the upper and lower floor's reinforcing bar of heat preservation wallboard, and middle connecting rod passes the heat preservation of heat preservation wallboard, does not influence the thermal-insulated effect of heat preservation to can carry out corresponding regulation according to the heat preservation thickness, simple manufacture, economic nature is good. But this utility model patent go up the connection piece with the lower connection piece is the steel sheet, and coefficient of heat conductivity is high, and the reinforcing bar connecting piece corrosion resisting property is relatively poor, forms cold, heat bridge effect easily.

Utility model patent grant specification CN201621100045.7 discloses a composite wall panel connecting piece, including the connecting rod, the connecting rod is prepared by thermal insulation material, the one end of connecting rod is equipped with anchor assembly, and the other end is equipped with the clamping piece, the clamping piece is used for connecting pre-buried embedded buried reinforcing bar in composite wall panel. The outer leaf plate, the heat-insulating layer and the inner leaf plate are connected into a whole by the utility model. The utility model has the advantages of relatively simple manufacture, high strength, capability of blocking heat transfer and reliable connection. But the wallboard connecting piece can not well play the anchoring role in the connection form of the inner and outer leaf wallboards.

The utility model patent granted Specification CN201420585393.2 discloses a connecting piece, which comprises a main body rod, a limit envelope and a knocking seal cap; the whole main body rod is in a slender flat shape, the front end of the main body rod is an anchoring part, the middle of the main body rod is a limiting part, and the tail end of the main body rod is a knocking part; the anchor portion of main part pole is closed angle barb structure, and the cover is equipped with spacing big envelope in the spacing portion of main part pole, and the portion of knocking of main part pole is covered with strikes the sealing cap. The structural style of connecting piece is simple, and the barb structure that the closed angle was modelled and was drawn in the prevention of vibrating is increased to the bottom, and the closed angle structure can improve connecting piece installation effectiveness, prevent that the barb structure that the vibrating was drawn can guarantee the installation quality and the installation effectiveness of connecting piece self. But the anchoring performance of the connecting piece is general, and the wall body is difficult to ensure to be tightly combined.

Most of the existing prefabricated concrete sandwich heat-insulation wall board connecting pieces and connecting methods are not perfect in the bonding area and the connecting form of the connecting pieces and the prefabricated concrete sandwich heat-insulation composite wall body, so that the anchoring performance is low, the material of the connecting pieces is limited, the cold and hot bridge effect is caused, and the heat-insulation effect is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defects in the prior art, embodiments of the present invention provide a connector for a precast concrete sandwich thermal insulation wallboard, and the problems to be solved by the present invention are: the utility model provides a connecting piece which has a simple structure, is easy to construct, is suitable for prefabricated sandwich heat-insulation wallboards, can greatly reduce the influence of a cold and hot bridge, effectively ensures that a sandwich heat-insulation material and a structural wall have the same service life and are not damaged, has higher anchoring performance and improves the safety performance of the connecting piece.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a precast concrete presss from both sides core insulation wall board connecting piece, includes FRP connecting rod, FRP screw cap, FRP anchor hook and FRP spacing ring, FRP connecting rod top is provided with the external screw thread, set up the internal thread with external screw thread looks adaptation in the FRP screw cap, through external screw thread and internal thread swing joint between FRP screw cap and the FRP screw cap.

Preferably, the FRP connecting rod is cylindrical.

Preferably, the FRP anchoring hook is connected with the connecting steel bars in the inner and outer leaf wall boards.

Preferably, the FRP screw cap and the FRP anchoring hook are of an integral structure made of the same material.

Preferably, the FRP connecting rod, the FRP limiting ring and the bottom FRP anchoring hook are of an integral structure made of the same material.

Preferably, the cross section of the FRP limit ring is circular or rectangular.

Preferably, the included angle formed by the FRP anchoring hook, the FRP screw cap and the FRP limiting ring ranges from 30 degrees to 60 degrees.

The utility model has the technical effects and advantages that:

1. the utility model has simple structure, easy construction and simple operation;

2. the connecting piece of the utility model adopts FRP material, has high strength, low price, low heat conductivity coefficient and better thermal bridge influence, and has wide application prospect;

3. the FRP anchoring hooks on the connecting piece are connected with the transverse steel bars in the inner leaf and the outer leaf, so that the anchoring performance between the connecting piece and the inner leaf wall board and the outer leaf wall board is greatly improved;

4. the FRP screw cap and the FRP connecting rod are divided into two parts, the FRP rod can easily penetrate through the heat-insulating plate, and the FRP screw cap and the limiting ring can play a limiting role to fix the heat insulation.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a plan view of the overall structure of the present invention;

FIG. 3 is a schematic structural view of an FRP screw cap according to the present invention;

fig. 4 is a schematic structural view of the wallboard connector of the present invention during construction.

The reference signs are: 1. FRP connecting rods; 2. FRP screw caps; 3. FRP anchoring hooks; 4. an external thread; 5. FRP limit rings; 6. an internal thread; 7. an outer sheet; 8. a thermal insulation board; 9. an inner page plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The prefabricated concrete sandwich thermal insulation wallboard connecting piece comprises an FRP connecting rod 1, an FRP screw cap 2, an FRP anchoring hook 3 and an FRP limiting ring 5, wherein an external thread 4 is arranged above the FRP connecting rod 1, an internal thread 6 matched with the external thread 4 is arranged in the FRP screw cap 2, and the FRP screw cap 2 is movably connected with the FRP screw cap 2 through the external thread 4 and the internal thread 6.

The FRP connecting rod 1 is cylindrical.

The FRP anchoring hooks 3 are connected with connecting steel bars in the inner and outer leaf wall boards.

The FRP screw cap 2 and the FRP anchoring hook 3 are of an integral structure with the same material.

The FRP connecting rod 1, the FRP limiting ring 5 and the bottom FRP anchoring hook 3 are of an integral structure with the same material.

The section of the FRP limit ring 5 is circular or rectangular.

The included angle formed by the FRP anchoring hook 3, the FRP screw cap 2 and the FRP limiting ring 5 ranges from 30 degrees to 60 degrees.

As shown in fig. 1 to 4, the implementation scenario specifically includes: (1) firstly, arranging two layers of reinforcing mesh sheets at the bottom of the inner sheet plate 9, hooking the two FRP anchoring hooks 3 at the bottom of the FRP connecting rod 1 on the reinforcing mesh sheets, keeping the connecting rod vertical, and pouring concrete of the inner sheet plate 9 according to the position of the limiting ring to reach the specified height;

(2) slightly pressing the insulation board 8, pressing a trace on the insulation board by utilizing the top of the FRP connecting rod 1, and then drilling a hole at the trace;

(3) mounting the insulation board 8 through the drilled hole, exposing the end of the FRP connecting rod 1 at the moment, fixing the insulation board 8 by rotating the FRP screw cap 2, ensuring the directions of two FRP anchoring hooks 3 at the upper end of the FRP screw cap 2, enabling the FRP anchoring hooks 3 to hook the reinforcing mesh of the outer leaf plate 7, and then sealing the hole seam between the FRP connecting rod 1 and the insulation board 8 by using polyurethane foaming adhesive;

(4) and casting the outer board 7 concrete and curing.

And finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. The utility model provides a precast concrete presss from both sides core insulation wallboard connecting piece, includes FRP connecting rod (1), FRP spiral shell (2), FRP anchor hook (3) and FRP spacing ring (5), its characterized in that: the FRP connecting rod (1) is provided with an external thread (4) above, an internal thread (6) matched with the external thread (4) is arranged in the FRP screw cap (2), and the FRP screw cap (2) is movably connected with the FRP screw cap (2) through the external thread (4) and the internal thread (6).

2. The prefabricated concrete sandwich heat-insulation wallboard connecting piece of claim 1, characterized in that: the FRP connecting rod (1) is cylindrical.

3. The prefabricated concrete sandwich heat-insulation wallboard connecting piece of claim 1, characterized in that: the FRP anchoring hooks (3) are connected with connecting steel bars in the inner and outer leaf wall boards.

4. The prefabricated concrete sandwich heat-insulation wallboard connecting piece of claim 1, characterized in that: the FRP screw cap (2) and the FRP anchoring hook (3) are of an integral structure made of the same material.

5. The prefabricated concrete sandwich heat-insulation wallboard connecting piece of claim 1, characterized in that: the FRP connecting rod (1), the FRP limiting ring (5) and the bottom FRP anchoring hook (3) are of an integral structure made of the same material.

6. The prefabricated concrete sandwich heat-insulation wallboard connecting piece of claim 1, characterized in that: the section of the FRP limit ring (5) is circular or rectangular.

7. The prefabricated concrete sandwich heat-insulation wallboard connecting piece of claim 1, characterized in that: the included angle formed by the FRP anchoring hook (3), the FRP screw cap (2) and the FRP limiting ring (5) ranges from 30 degrees to 60 degrees.