High-strength rigid polyurethane sandwich panel

Abstract

The utility model belongs to the technical field of sandwich panels, and particularly relates to a high-strength rigid polyurethane sandwich panel which comprises a cuboid bottom plate. The bottom plate and the special-shaped side plates define a closed rectangle and are fixed through bolts. The composite board further comprises a supporting layer, polyurethane foam layers and color steel plates, the polyurethane foam layers are distributed on the two sides of the supporting layer, and the two color steel plates are arranged on the outer portions of the polyurethane foam layers respectively. The two color steel plates are inserted into the notches in the special-shaped side plates through the installation edges on the two sides to be fixed. C-shaped keels are further arranged on the inner sides of the special-shaped side plates, and the supporting layers are limited through the C-shaped keels. The supporting layer with higher strength is additionally arranged in the sandwich panel, and the C-shaped keels of the special-shaped side plates are combined, so that the strength of the sandwich panel is greatly improved, the original thermal insulation performance is ensured, and the sandwich panel can resist external impact.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of sandwich panel, concretely relates to a high strength hard polyurethane sandwich panel. BACKGROUND

[0002] The sandwich panel has become an ideal choice for building mobile or temporary buildings such as modular houses, temporary offices and exhibition halls due to its characteristics of being convenient for factory prefabrication and on-site rapid installation. The cold storage sandwich panel is mainly composed of two layers of metal plates (such as galvanized steel plates or aluminum plates) and polyurethane foam filled in the middle, and is widely used for manufacturing thermal insulation doors, enclosure structures and the like to maintain the stability of the internal low-temperature environment.

[0003] The existing polyurethane sandwich panel structure is relatively complex, most of the inner core structures focus on the effect of heat preservation and cold prevention, do not have strong supporting materials, and thus deformation, fracture and other phenomena occur in the actual use process, thereby affecting the stability of the overall structure, and under the action of extreme weather or external force, accidents such as collapse may occur, which threatens personnel and property. INVENTION CONTENTS

[0004] The utility model aims at providing a high strength hard polyurethane sandwich panel, including bottom plate, the bottom plate is cuboid, the bottom plate and special-shaped side plate enclose a closed rectangle, and the two are fixed through bolt, still include support layer, polyurethane foam layer and color steel plate, the polyurethane foam layer is distributed in support layer both sides, and two color steel plates are arranged respectively in the outside of polyurethane foam layer, two color steel plates are fixed through the mounting edge of both sides and insert the slot in the inside of special-shaped side plate, the inside of special-shaped side plate still is provided with C type keel, and C type keel limits support layer.

[0005] Preferably, the support layer includes an upper top plate, a lower top plate, and a spiral triangular steel wire, and the upper top plate and the lower top plate are both welded with a plurality of spiral triangular steel wires arranged in order on the surfaces.

[0006] Preferably, the upper top plate and the lower top plate are connected by welding the spiral triangular steel wires on the surfaces of the upper top plate and the lower top plate.

[0007] Preferably, polyurethane foam is injected between the upper top plate and the lower top plate.

[0008] Preferably, the core layer of the support layer has a height of 77 mm.

[0009] The utility model has the advantages of:

[0010] By improving the structure inside the polyurethane sandwich panel, increasing the support mechanism, the overall rigidity of the sandwich panel is enhanced, the overall stability of the sandwich panel is effectively enhanced, the sandwich panel can bear larger load and deformation, thereby prolonging the service life; easier to install and maintain, the support mechanism can provide additional fixing points, so that the sandwich panel is more stable during installation and is not easy to displace or deform; prevent accidents such as collapse under extreme weather or external force, thereby protecting the safety of personnel and property.

[0011] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0012] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0014] Figure 1 is a schematic diagram of the external structure of the sandwich panel of the embodiment of the present application;

[0015] Figure 2 is a transverse sectional view of the sandwich panel of the embodiment of the present application;

[0016] Figure 3 is a schematic diagram of the lower top plate of the support structure of the embodiment of the present application;

[0017] Figure 4 is a schematic diagram of the upper top plate of the support structure of the embodiment of the present application;

[0018] Figure 5 is a spiral triangular steel wire superposition state diagram of the embodiment of the present application.

[0019] In the drawings:

[0020] Sandwich panel body 1, hard metal plate 101, polyurethane foam layer 102, flame-retardant insulation layer 103, polystyrene foam layer 104, aluminum honeycomb 105, glass magnesium filler 106, connecting groove 2, socket 3, connecting head 4, connecting plate 5, limiting strip 501. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] As shown in Figures 1 to 5 The embodiment provides a high-strength rigid polyurethane sandwich panel, which comprises a bottom plate 2, the bottom plate 2 is a cuboid, the bottom plate 2 and a special-shaped side plate 1 form a closed rectangle, and the two are fixed through bolts, wherein the special-shaped side plate 1 is a three-face half-enclosing shape, and a right-angle edge is welded into an entity. Further comprising a supporting layer 4, a polyurethane foam layer 5 and a color steel plate 3, the polyurethane foam layer 5 is distributed on both sides of the supporting layer 4, and two color steel plates 3 are arranged outside the polyurethane foam layer 5 respectively; the two color steel plates 3 are fixed by being inserted into notches 101 in the special-shaped side plate 1 through mounting edges on both sides; a C-shaped keel 102 is further arranged on the inner side of the special-shaped side plate 1, and the C-shaped keel 102 limits the supporting layer 4.

[0023] Reference can be made to the structures of Figure 1 And Figure 2 The height of the C-shaped keel 102 is arranged to be the same as the height of the supporting layer 4, so that the mounting mode of the supporting layer 4 is similar to that of the color steel plate 3, that is, the C-shaped keel 102 limits the supporting layer 4 by being inserted and moved. At this time, the supporting layer 4 and the color steel plate 3 are both installed in place, and then the polyurethane foam layer 5 is formed by injection molding.

[0024] The supporting layer 4 comprises an upper top plate 401, a lower top plate 402 and spiral triangular steel wires 403, a plurality of spiral triangular steel wires 403 arranged in order are welded on the surfaces of the upper top plate 401 and the lower top plate 402. The spiral triangular steel wires 403 on the surfaces of the upper top plate 401 and the lower top plate 402 are welded to each other to realize connection. Polyurethane foam is injected between the upper top plate 401 and the lower top plate 402. Reference is made to Figure 3 、 Figure 4 And Figure 5 A single steel wire is twisted into the shape of the spiral triangular steel wire 403, the stability of such a triangular pyramid is higher than that of a conventional shape, and when the upper top plate 401 and the lower top plate 402 are spliced with each other, the spiral triangular steel wires 403 on the surfaces of the upper top plate 401 and the lower top plate 402 are spliced into a more stable structure by being staggered with each other, and have higher compressive strength.

[0025] The core layer height of the support layer 4 is 77mm. Through multiple tests, the compressive strength of the spiral triangular steel wire 403 core layer with a height of 77mm is better than that of core layers with other heights.

[0026] Each device (parts not specifically described) selected in the present application is a general standard part or a part known to those skilled in the art, and its structure and principle can be known to those skilled in the art through a technical manual or through a conventional experimental method.

[0027] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication between two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0028] In the description of the present application, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0029] Based on the above ideal embodiments according to the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A high-strength rigid polyurethane sandwich panel, comprising a base plate (2), wherein the base plate (2) is a cuboid; characterized in that: The base plate (2) and the irregular side plate (1) form a closed rectangle, which are fixed together by bolts; it also includes a support layer (4), a polyurethane foam layer (5) and a color steel plate (3). The polyurethane foam layer (5) is distributed on both sides of the support layer (4), and two color steel plates (3) are respectively set on the outside of the polyurethane foam layer (5); the two color steel plates (3) are fixed by inserting the mounting edges on both sides into the groove (101) inside the irregular side plate (1); a C-shaped keel (102) is also provided on the inside of the irregular side plate (1), and the C-shaped keel (102) limits the support layer (4).

2. The high-strength rigid polyurethane sandwich panel according to claim 1, characterized in that: The support layer (4) includes an upper top plate (401), a lower top plate (402) and a spiral triangular steel wire (403). Several neatly arranged spiral triangular steel wires (403) are welded to the surfaces of the upper top plate (401) and the lower top plate (402).

3. The high-strength rigid polyurethane sandwich panel according to claim 2, characterized in that: The upper top plate (401) and the lower top plate (402) are connected by welding the spiral triangular steel wires (403) on their respective surfaces together.

4. The high-strength rigid polyurethane sandwich panel according to claim 3, characterized in that: Polyurethane foam is injected between the upper top plate (401) and the lower top plate (402).

5. The high-strength rigid polyurethane sandwich panel according to claim 4, characterized in that: The core layer height of the support layer (4) is 77 mm.

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