Prefabricated sandwich thermal insulation external wall panel and connecting piece thereof

Abstract

The utility model relates to the technical field of building heat preservation, in particular to a prefabricated sandwich heat preservation external wall panel and a connecting piece thereof, the prefabricated sandwich heat preservation external wall panel is provided with a first part, a second part and a third part which are coaxially arranged and mutually connected, resistance grooves are formed in the first part and the third part, and a limiting plate is arranged at the connecting position of the third part and the second part. The plane where the limiting plate is located is perpendicular to the axis of the second part, a plurality of ribs are evenly distributed on one surface of the limiting plate and extend in the radial direction of the limiting plate, and a threaded installation piece is arranged on the other surface of the limiting plate. According to the prefabricated sandwich thermal insulation external wall panel, through cooperative arrangement of the protruding parts, the resistance grooves, the resistance protrusions and the limiting plates, stable connection of the inner wall, the thermal insulation plate and the outer wall of the prefabricated sandwich thermal insulation external wall panel is achieved, and meanwhile the connection strength and stability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of building thermal insulation, and in particular to a prefabricated sandwich thermal insulation exterior wall panel and a connecting piece thereof. Background Art

[0002] In recent years, with the development of industrialized housing in my country, a new type of exterior wall sandwich insulation technology has emerged - prefabricated composite exterior wall insulation board technology, which places the insulation material in the middle of the concrete wall structure and casts it together with the entire wall in the prefabricated component factory to form a new insulation system as a whole.

[0003] In the related technology, the inner side of the prefabricated exterior wall is the stress-bearing structural layer, the middle is the insulation layer, and the outermost is the protective layer. The structural layer, insulation layer and protective layer are connected into a whole through connectors with very good heat resistance, thereby ensuring that the insulation layer and the structural layer have the same lifespan and avoiding thermal bridges, thereby improving the insulation effect.

[0004] In order to improve the connection effect between the connecting parts and the structural layer, insulation layer and protective layer, and to increase the strength, grooves will be opened in the parts of the connecting parts located in the structural layer and the protective layer. The grooves can increase the adhesion with the concrete and improve the pull-out resistance; and protrusions are set on the surface of the part of the connecting parts located in the insulation layer to increase the friction between the connecting parts and the insulation layer.

[0005] The problem with the related art is that when inserting the connector, a positioning hole is generally pre-opened on the insulation layer and then the connector is directly inserted. However, due to the special structural limitations of the connector, it is difficult to insert the connector and install it in place. Utility Model Content

[0006] In order to facilitate the installation of the connecting piece, the first aspect of the present application provides a connecting piece, and the second aspect of the present application provides a prefabricated sandwich insulation exterior wall panel.

[0007] In a first aspect, the present application provides a connector, which adopts the following technical solution:

[0008] A connecting piece comprises a first part, a second part and a third part which are coaxially arranged and connected to each other, wherein resistance grooves are formed on the first part and the third part, and a limiting plate is provided at the connection between the third part and the second part, and the plane where the limiting plate is located is perpendicular to the axis of the second part, and a surface of the limiting plate is provided with a plurality of evenly distributed ribs, each of which extends along the radial direction of the limiting plate, and a threaded mounting piece is provided on the other surface of the limiting plate.

[0009] By adopting the above technical solution, resistance grooves are arranged on the first part and the third part of the connector, which can increase the bonding force between the connector and the concrete and improve the pull-out resistance. The setting of the limit plate can limit the position of the connector during the installation process so that the two ends of each connector can be flush.

[0010] Optionally, it includes a connecting rod and a ring injection molded on the outside of the connecting rod, the first part, the second part and the third part are arranged in sequence along the axial direction of the connecting rod, the ring is arranged on the second part, the limiting plate is formed at one end of the ring, and the rib is formed on a side of the limiting plate close to the third part.

[0011] By adopting the above technical solution, the ribs arranged on the surface of the limiting plate can improve the connection effect between the connecting piece and the concrete layer, and play a role in fixing and limiting.

[0012] Optionally, the collar has a first section and a second section, the threaded mounting piece is formed in the first section, and the outer diameter of the threaded mounting piece is larger than the outer diameter of the second section, and the outer diameter of the limiting plate is larger than the outer diameter of the threaded mounting piece.

[0013] By adopting the above technical solution, the connecting piece can be installed from a specified direction and the position of each part can be limited.

[0014] Optionally, a plurality of resistance protrusions are provided on the outer circumferential surface of the second section of the collar, and the plurality of resistance protrusions are arranged at intervals along the circumference of the collar.

[0015] By adopting the above technical solution, the provision of the resistance protrusion can increase the friction between the connecting piece and the insulation board, thereby enhancing the connection effect.

[0016] Optionally, the connecting rod includes a rod body and a plurality of protrusions integrally formed on the outer surface of the rod body, each of the protrusions extends along the axial direction of the rod body and has two ends flush with the rod body, and the resistance groove is formed on the protrusion.

[0017] By adopting the above technical solution, the protrusion is provided to increase the cross-sectional area of ​​the connecting piece, thereby improving the pulling force between the connecting piece and the material to be connected.

[0018] Optionally, the connecting rod is made of at least one of glass fiber, basalt fiber and carbon fiber, and at least one of epoxy resin and vinyl resin through a pultrusion process.

[0019] By adopting the above technical solution, the connecting rod has low thermal conductivity, good corrosion resistance, high tensile strength, good durability, and has the advantages of a thermal expansion coefficient close to that of concrete and light weight. It can avoid the thermal bridge effect at the connection between the connecting piece and the wall of the prefabricated sandwich insulation exterior wall panel, thereby improving the thermal insulation performance of the wall.

[0020] In a second aspect, the present application provides a prefabricated sandwich insulation exterior wall panel, which adopts the following technical solution:

[0021] A prefabricated sandwich insulation exterior wall panel comprises an inner leaf wall, an insulation board and an outer leaf wall which are distributed in sequence, and a connector connecting the inner leaf wall, the insulation board and the outer leaf wall. The connector adopts the connector as described above, and the first part of the connector corresponds to the inner leaf wall, the second part corresponds to the insulation board, and the third part corresponds to the outer leaf wall.

[0022] By adopting the above technical solution, the inner leaf wall, the insulation board and the outer leaf wall are connected using the above-mentioned connecting parts, which has a higher connection effect, improves the overall strength, extends the service life, and also has a better insulation effect.

[0023] Optionally, a through positioning hole is provided on the insulation board, and an internal threaded hole is provided on a side of the positioning hole facing the outer leaf wall, and the internal threaded hole is adapted to be compatible with a threaded mounting piece.

[0024] By adopting the above technical solution, the positioning holes and the internal threaded holes are provided to determine the installation position of the connecting piece and facilitate the connection of the connecting piece with the insulation board.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. Through the coordinated arrangement of the protrusion, the resistance groove, the resistance protrusion and the limit plate, the inner leaf wall, the insulation board and the outer leaf wall of the prefabricated sandwich insulation exterior wall panel are stably connected, and the connection strength and stability are improved;

[0027] 2. By setting ribs on the limit plate, the structural strength of the limit plate is increased, and at the same time, the friction between the limit plate and the exterior wall plate is increased, further improving the stability of the connection;

[0028] 3. By setting the threaded mounting parts, the installation of the connecting parts is facilitated and the construction efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front view structural schematic diagram of a connecting piece according to an embodiment of the present application.

[0030] Figure 2 It is a schematic diagram of the top view of the structure of the connecting piece of Example 1 of the present application.

[0031] Figure 3 It is a schematic diagram of the side cross-sectional structure of the prefabricated sandwich insulation exterior wall panel of Example 2 of the present application.

[0032] Figure numerals: 01, first part; 02, second part; 03, third part; 1, connecting rod; 11, rod body; 12, protrusion; 2, ring; 21, first section; 22, second section; 3, limit plate; 31, rib; 4, threaded mounting part; 5, resistance protrusion; 6, resistance groove; 7, inner leaf wall; 8, insulation board; 9, outer leaf wall. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] Embodiment 1

[0035] The present application embodiment discloses a connecting piece. Figure 1 A connector has a first part 01, a second part 02 and a third part 03 which are sequentially distributed and connected to each other along the axial direction. The connector has resistance grooves 6 formed at the first part 01 and the third part 03, and these resistance grooves 6 can increase the friction between the connector and the exterior wall panel, thereby improving the stability of the connection.

[0036] Specifically, the connector in this embodiment includes a connecting rod 1 and a collar 2 injection-molded on the outside of the connecting rod 1. The first part 01, the second part 02 and the third part 03 are sequentially distributed in the axial direction of the connecting rod 1, and the collar 2 is correspondingly arranged at the second part 02 of the connecting rod 1. In terms of material selection, the connecting rod 1 can be made of at least one of glass fiber, basalt fiber and carbon fiber as a reinforcing material, and at least one of epoxy resin and vinyl resin as a matrix material, through a pultrusion process. This composite material not only has the characteristics of light weight and high strength, but also has good corrosion resistance and insulation properties, and is very suitable for the manufacture of connectors in the field of building insulation.

[0037] Furthermore, the connecting rod 1 includes a rod body 11 and a plurality of protrusions 12 integrally formed on the outer surface of the rod body 11, and the protrusions 12 extend along the axial direction of the rod body 11, and both ends are flush with the rod body 11 (i.e., a connecting piece structure with a Y-shaped cross section is formed). The resistance grooves 6 are formed on the protrusions 12 to increase the contact area and friction between the connecting rod 1 and the exterior wall panel, thereby improving the reliability of the connection.

[0038] The specific shape of the collar 2 is adapted to the connecting rod 1, and the collar 2 is further refined to have a first section 21 and a second section 22, wherein the first section 21 is close to the third portion 03, and the second section 22 is close to the first portion 01. A threaded mounting member 4 is formed on the first section 21 of the collar 2, the outer diameter of the threaded mounting member 4 is larger than the outer diameter of the second end, and an outer thread is formed on its outer surface, which is used to facilitate the installation of the connector on the exterior wall panel.

[0039] A limit plate 3 is also provided at one end of the collar 2 facing the third part 03. The plane where the limit plate 3 is located is perpendicular to the axis of the connecting rod 1, and the outer diameter of the limit plate 3 is larger than the outer diameter of the threaded mounting member 4 to provide a larger supporting area and enhance the stability of the connection.

[0040] Further, see Figure 2 A plurality of evenly distributed ribs 31 are arranged on a surface of the limiting plate 3 facing the third portion 03 . The ribs 31 extend radially along the limiting plate 3 , and can further enhance the connection strength between the connecting piece and the exterior wall panel.

[0041] Embodiment 2

[0042] The difference of this embodiment lies in the further optimized design of the connecting piece. Specifically, the resistance groove 6 provided on the protruding portion 12 of the connecting rod 1 can adopt different shapes and sizes to adapt to different installation requirements and external wall panel material properties. For example, the resistance groove 6 can be set as a V-shaped groove or a U-shaped groove, etc., and the friction coefficient and contact area between the connecting piece and the external wall panel can be changed by adjusting the width and depth of the groove, so as to achieve a more flexible and reliable connection effect.

[0043] Embodiment 3

[0044] This embodiment discloses a prefabricated sandwich insulation exterior wall panel. Figure 3 The prefabricated sandwich insulation exterior wall panel comprises an inner leaf wall 7, an insulation board 8 and an outer leaf wall 9 which are sequentially distributed, and is characterized in that the connector described in the above embodiment is used to connect the inner leaf wall 7, the insulation board 8 and the outer leaf wall 9. A through positioning hole is provided on the insulation board 8, and an internal threaded hole matching the threaded mounting member 4 is formed on the side of the positioning hole facing the outer leaf wall 9.

[0045] The first part 01 of the connecting piece corresponds to the inner leaf wall 7, the second part 02 corresponds to the insulation board 8, and the third part 03 corresponds to the outer leaf wall 9 for installation and fixation.

[0046] In order to ensure that the exterior wall panels have good thermal insulation performance and structural strength and reduce material costs, the inner leaf wall 7 and the outer leaf wall 9 can be made of concrete, and the thermal insulation board 8 can be made of polystyrene. This material combination not only meets the building energy-saving requirements, but also realizes the lightweight and economical overall structure of the exterior wall panels.

[0047] The following connection methods can be specifically adopted between the connecting parts and the prefabricated sandwich insulation exterior wall panels.

[0048] First, the inner leaf wall 7 is formed by pouring and vibrating concrete. After vibration, the insulation board 8 is laid on its surface. The insulation board 8 is preset with a positioning hole. The connector is installed at the preset positioning hole so that the first part 01 of the connector passes through the positioning hole and extends into the inner leaf wall 7. When the threaded mounting member 4 gradually extends into the internal threaded hole, the connector is rotated to make it screw into the positioning hole as a whole until the limit plate 3 abuts against the surface of the insulation board 8 (the minimum anchoring length of the connector inserted into the inner leaf wall 7 is 30mm, and the length of the collar 2 should be consistent with the thickness of the insulation board 8). The multiple connectors arranged on the insulation board 8 are preferably arranged in a rectangular shape, and the spacing between adjacent connectors should be determined according to the design requirements, generally 300mm-600mm. Then, concrete is poured on the insulation board 8 and vibrated to form the outer leaf wall 9. It should be noted that when the longitudinal and transverse reinforcement settings in the inner leaf wall 7 and the outer leaf wall 9 conflict with the arrangement of the connectors, the reinforcement spacing should be fine-tuned to ensure that the connectors are buried in the concrete to a specified depth, and the fine-tuning distance is determined according to the design requirements.

[0049] In summary, by adopting the prefabricated sandwich insulation exterior wall panels and their connecting parts provided by the present application, the problems of insufficient connection strength and poor stability existing in the connection method and structure of the exterior wall panels can be effectively solved.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A connecting piece, characterized in that: The invention relates to a device comprising a first part (01), a second part (02) and a third part (03) which are coaxially arranged and connected to each other, wherein the first part (01) and the third part (03) are both formed with a resistance groove (6), a limit plate (3) is arranged at the connection between the third part (03) and the second part (02), the plane where the limit plate (3) is located is perpendicular to the axis of the second part (02), a surface of the limit plate (3) is provided with a plurality of evenly distributed ribs (31), each of the ribs (31) extends in the radial direction of the limit plate (3), and a threaded mounting member (4) is arranged on the other surface of the limit plate (3).

2. The connecting piece according to claim 1, characterized in that: The invention comprises a connecting rod (1) and a collar (2) injection-molded on the outside of the connecting rod (1), wherein the first part (01), the second part (02) and the third part (03) are arranged in sequence along the axial direction of the connecting rod (1), the collar (2) is arranged on the second part (02), the limiting plate (3) is formed on one end of the collar (2), and the rib (31) is formed on a side of the limiting plate (3) close to the third part (03).

3. A connector according to claim 2, characterized in that: The collar (2) comprises a first section (21) and a second section (22), the threaded mounting member (4) is formed in the first section (21), the outer diameter of the threaded mounting member (4) is greater than the outer diameter of the second section (22), and the outer diameter of the limiting plate (3) is greater than the outer diameter of the threaded mounting member (4).

4. A connector according to claim 3, characterized in that: A plurality of resistance protrusions (5) are arranged on the outer peripheral surface of the second section (22) of the collar (2), and the plurality of resistance protrusions (5) are arranged at intervals along the circumference of the collar (2).

5. A connector according to claim 2, characterized in that: The connecting rod (1) comprises a rod body (11) and a plurality of protrusions (12) integrally formed on the outer surface of the rod body (11), each of the protrusions (12) extending along the axial direction of the rod body (11) and having two ends flush with the rod body (11), and the resistance groove (6) is formed on the protrusion (12).

6. A prefabricated sandwich insulation exterior wall panel, characterized in that: The invention comprises an inner leaf wall (7), an insulation board (8) and an outer leaf wall (9) which are distributed in sequence, and a connector connecting the inner leaf wall (7), the insulation board (8) and the outer leaf wall (9), wherein the connector is a connector as described in any one of claims 1 to 5, wherein the first part (01) of the connector corresponds to the inner leaf wall (7), the second part (02) corresponds to the insulation board (8), and the third part (03) corresponds to the outer leaf wall (9).

7. The prefabricated sandwich insulation exterior wall panel according to claim 6, characterized in that: A through positioning hole is provided on the insulation board (8), and an internal threaded hole is provided on a side of the positioning hole facing the outer leaf wall (9), wherein the internal threaded hole is compatible with the threaded mounting member (4).

Images