CN-224213630-U - Novel prefabricated sandwich heat preservation external wall panel

CN224213630UCN 224213630 UCN224213630 UCN 224213630UCN-224213630-U

Abstract

The utility model discloses a novel prefabricated sandwich heat-insulating external wall board which comprises an inner leaf plate, an inner leaf plate CFRP rib net, a heat-insulating plate, an outer leaf plate CFRP rib net and an outer leaf plate, wherein the inner leaf plate, the outer leaf plate and the heat-insulating plate are adhered by W glue, a plurality of split tubular drawknot pieces penetrating through the heat-insulating plate are arranged in the external wall board, the split tubular drawknot pieces are anchored between the inner leaf plate and the outer leaf plate and are lapped with the inner leaf plate CFRP rib net through FRP short ribs, embedded parts are arranged at four corners of the external wall board, each embedded part comprises an inner threaded steel sleeve penetrating through the heat-insulating plate and anchored between the inner leaf plate and the outer leaf plate and a high-strength bolt, one end of the high-strength bolt is connected with the inner threaded steel sleeve through mechanical meshing, and the other end of the high-strength bolt extends out of the inner leaf plate to be connected with a main body structure. The high-combination connection performance between the heat-insulating plate and the leaf plate is realized through the combined action of the split pipe type drawknot piece and the W glue, the novel connection mode of the prefabricated sandwich heat-insulating externally-hung wallboard and the main body structure improves the construction efficiency, and the industrial production is facilitated.

Inventors

YANG YANMIN
LIU XIANGDONG
ZHANG BINLIN
LI JIAYI

Assignees

吉林建筑大学

Dates

Publication Date: 20260508
Application Date: 20250604

Claims (8)

1. A novel prefabricated sandwich heat-insulating externally-hung wallboard is characterized by comprising an inner leaf plate, an inner leaf plate CFRP rib net, a heat-insulating plate, an outer leaf plate CFRP rib net, an outer leaf plate, W glue and split tubular drawknot members, wherein the inner leaf plate, the outer leaf plate and the heat-insulating plate are adhered by the W glue, a plurality of split tubular drawknot members penetrating through the heat-insulating plate are arranged in the sandwich heat-insulating externally-hung wallboard, the split tubular drawknot members are anchored between the inner leaf plate and the outer leaf plate and are lapped with the inner leaf plate CFRP rib net through FRP short ribs, embedded parts are respectively arranged at four corners of the externally-hung wallboard, each embedded part comprises an inner threaded steel sleeve penetrating through the heat-insulating plate and anchored between the inner leaf plate and the outer leaf plate and a high-strength screw rod, one end of the high-strength screw rod is connected with the inner threaded steel sleeve through mechanical engagement to form a whole, and the other end of the high-strength screw rod extends out of the inner leaf plate to be connected with a main body structure.
2. The novel prefabricated sandwich heat-insulating externally-hung wallboard according to claim 1, wherein the split tubular drawknot piece comprises a pipe body, a pipe cover and a plurality of FRP short ribs, the pipe body penetrates through the heat-insulating board, a penetrating gap is filled with polyurethane foam, double-row parallel through hole arrays are arranged on the buckling end faces of the pipe cover and the pipe body, the FRP short ribs are inserted into corresponding through holes to realize connection of the pipe cover and the pipe body, the double-row FRP short ribs are distributed in an up-down staggered mode, and the double-row FRP short ribs are respectively connected to the upper portion and the lower portion of the CFRP rib net of the inner leaf plate.
3. The novel prefabricated sandwich thermal insulation external wall panel according to claim 2, wherein the pipe body and the pipe cover are formed by compression molding of fiber reinforced plastics with low heat conduction and high strength, and fibers are distributed along diagonal directions during compression molding.
4. The novel prefabricated sandwich heat-insulating externally hung wallboard according to claim 2, wherein the pipe wall thickness of the pipe body and the pipe cover is 6mm-10mm, the diameter of the FRP short rib is 8mm-10mm, and the material strength is not lower than HRB335.
5. The novel prefabricated sandwich insulation external wall panel according to claim 1, wherein the arrangement space of the split tubular drawknot pieces in the external wall panel is 250mm-650mm.
6. The novel prefabricated sandwich heat-insulating externally-hung wallboard is characterized in that the embedded part further comprises a high-strength anchor plate, anchor bars and nuts, wherein one high-strength anchor plate is arranged in each of the inner leaf plate and the outer leaf plate, four corners of the two high-strength anchor plates are connected through the anchor bars, the inner threaded steel sleeve is welded between the two high-strength anchor plates, a through hole with the same diameter as a high-strength screw rod is formed in the center of the high-strength anchor plate in the inner leaf plate, the high-strength screw rod penetrates through the through hole of the inner leaf plate and stretches into the inner threaded steel sleeve to be meshed with the inner threads, and the nuts are welded and fixed with the high-strength anchor plate and the high-strength screw rod in the inner leaf plate after being meshed with the threads of the high-strength screw rod.
7. The novel prefabricated sandwich heat-insulating externally hung wallboard according to claim 6, wherein the thickness of the high-strength anchor plate is 8-16 mm, the diameter of the high-strength screw is 8-12 mm, the strength grade of the high-strength anchor plate material is at least 8.8 grade, the strength grade of the high-strength screw material is at least 10.9 grade, and the anchor bars are hot rolled ribbed steel bars with the diameter of HRB400 grade of 8mm or more.
8. The novel prefabricated sandwich insulation external wallboard according to claim 1, wherein threads are arranged at two ends in the internally threaded steel sleeve, the internal threads at the two ends are consistent in rotation direction, the middle is not threaded, and the unthreaded part is not more than 1/3 of the length of the internally threaded steel sleeve.

Description

Novel prefabricated sandwich heat preservation external wall panel Technical Field The utility model belongs to the technical field of externally-hung wallboards, and relates to a novel prefabricated sandwich heat-insulating externally-hung wallboard. Background The building industry is a key field for realizing the 'double carbon' target, the energy consumption design of the building in China takes the outer wall as a key point, the peripheral retaining wall of the main stream building is a prefabricated sandwich heat-insulating externally-hung wallboard, and the building energy-saving and green low-carbon building development key is realized, so that the building energy-saving and heat-insulating externally-hung wallboard has huge market potential. The prefabricated sandwich heat-insulating external wall panel consists of an inner leaf plate, an outer leaf plate, a heat-insulating material, a drawknot piece and an embedded piece connected with a main body structure, wherein the effective connection between the leaf plate and the heat-insulating material and the effective connection between the sandwich wall panel and the main body frame are important rings for realizing the functional integration of decoration, heat insulation, low energy consumption and the like of the sandwich wall panel. The existing prefabricated sandwich heat-insulating externally-hung wallboard drawknot parts mainly comprise fiber reinforced plastic rod-shaped drawknot parts and metal plate-type drawknot parts. The FRP drawknot member has the advantages of serious thermal bridge effect, easy corrosion, high cost and easy eccentric problem, and the FRP drawknot member has low heat conductivity coefficient and good durability, but the FRP drawknot member has low shear strength and easy shear damage of interfaces. The existing fiber drawknot piece is mainly in a rod shape, is easy to pull out only by means of concrete anchoring, and is easy to misplace or incline between the reinforcing mesh and the drawknot piece during pouring, so that construction accuracy is affected. The combination property of the sandwich wallboard accords with the development trend, but most commercial drawknot pieces can not provide higher combination property of the wallboard at present. The problems that the wallboard is difficult to assemble, the overhanging part of the embedded part is not firmly connected with the main body structure and is easy to pull out and the like caused by welding errors exist in the prior embedded part, the method for connecting the prefabricated sandwich externally-hung wallboard by using the externally-extended screw rod of the internal thread steel sleeve is a relatively wide solution, but the cost of the internal thread sleeve is greatly increased along with the length increase, and simultaneously, the requirement on a lathe is higher. The patent of application number CN202220765751.2 discloses a prefabricated sandwich heat-insulating externally-hung wallboard structure embedded part and a plate-type drawknot part, which have higher bearing capacity and stability, but the inner heat-insulating material and the outer heat-insulating material of the drawknot part cannot form a whole, the heat-insulating material needs to be cut in advance, the labor cost is increased, and the popularization and the use are inconvenient. The sandwich wallboard heat insulation material and the leaf plates are only tied by the drawknot piece, the stress is easy to generate layering, the heat insulation performance is affected, the requirement on the processing precision of the through-wire internal thread sleeve is strict, and the processing cost of the material is greatly increased along with the increase of the length of the internal thread. Therefore, a novel sandwich heat-insulating wallboard with strong combination property, low material and labor cost and difficult layering under stress is needed. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide the novel prefabricated sandwich heat-insulating externally-hung wallboard, the combination property is improved under the combined action of the split pipe type drawknot piece and the W glue, and the embedded piece ensures the connection precision of the externally-hung wallboard and the main body structure. The utility model provides a novel prefabricated sandwich heat-insulating external wall panel which comprises an inner leaf plate, an inner leaf plate CFRP rib net, a heat-insulating plate, an outer leaf plate CFRP rib net, an outer leaf plate, W glue and split tubular drawknot members, wherein the inner leaf plate, the outer leaf plate and the heat-insulating plate are adhered by the W glue, a plurality of split tubular drawknot members penetrating through the heat-insulating plate are arranged in the sandwich heat-insulating external wall panel, the split tubular drawknot members are anchored between the inner leaf plate and the outer leaf