Special-shaped light steel keel sandwich thermal insulation wall

Abstract

The utility model provides a special-shaped light steel keel sandwich thermal insulation wall, which comprises keels, a light sandwich and leaf walls on the two sides of the light sandwich, the keels are a plurality of special-shaped light steel keel welding parts which are vertically arranged, and each special-shaped light steel keel welding part comprises two vertical back-to-back groove-shaped keels. The bottom surfaces of the two groove-shaped keels are parallel to the central plane of the wall body and are connected through a plurality of connecting plates which are arranged at intervals, and the connecting plates are vertical and are perpendicular to the bottom surfaces of the groove-shaped keels; a longitudinal welding positioning groove is formed in the middle of the bottom face of each groove-shaped keel, the two ends of the connecting plate are inserted into the welding positioning grooves, tooth-shaped welding contacts are arranged at the two ends of the connecting plate and are in butt-welding with the groove-shaped keels in the welding positioning grooves, and the light sandwich is arranged between the connecting plate and the groove-shaped keels on the two sides. The framework is simple in structure and high in strength, the framework can be welded in an automatic welding mode easily, welding is firm, and welding quality is stable.

Description

Technical Field

[0001] This utility model relates to a prefabricated building wall, and in particular to an irregularly shaped light steel keel sandwich insulated wall. Background Technology

[0002] With the increasing standards for building energy efficiency, thermal performance, and sound insulation, the planning, design, construction, and acceptance of engineering projects are beginning to strictly adhere to relevant requirements, in response to the modernization trends in the construction industry, such as carbon emissions, building energy conservation, prefabricated buildings, and energy conservation and waste utilization. Currently, various composite wall panels are available on the market, generally including a keel, a lightweight sandwich core, and leaf walls on both sides of the lightweight sandwich core. Some keels use existing profiles on the market, while others are assembled components. For example, CN113502950A discloses a "thermally broken bridge supported steel mesh cage sandwich composite partition wall and its manufacturing method," whose partition wall includes a steel mesh and a lightweight thermal insulation board. The lightweight thermal insulation board is fixed between two steel meshes by a flame-retardant resin-made irregularly shaped support. A protective layer pad is also provided between the lightweight thermal insulation board and the steel mesh, and the steel mesh is connected into a steel mesh cage by connecting steel bars passing through the protective layer pad and the lightweight thermal insulation board. The partition wall's frame uses flame-retardant, one-piece molded plastic supports, but this requires more material and its structural strength is inferior to metal components. The outer side of these supports cannot support the reinforcing mesh, necessitating the use of protective layer spacers and connecting steel bars to secure it. Therefore, this type of partition wall has lower frame strength and a more complex structure. Some designs use welded metal components as the wall frame, but the welding quality is unsatisfactory and unstable, requiring further structural improvements. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an irregularly shaped light steel keel sandwich insulation wall, whose frame structure is simple and high-strength, and whose frame is easy to weld using automated welding methods, resulting in strong welds and stable welding quality.

[0004] To achieve the above objectives, the technical solution provided by this utility model is as follows: an irregularly shaped light steel keel sandwich insulation wall, comprising a keel, a lightweight sandwich, and leaf walls on both sides of the lightweight sandwich. The keel consists of multiple vertically arranged irregularly shaped light steel keel welded components, each including two vertically facing back-to-back channel-shaped keels. The bottom surfaces of the two channel-shaped keels are parallel to the center plane of the wall and connected by multiple spaced connecting plates. The connecting plates are vertical and perpendicular to the bottom surfaces of the channel-shaped keels. A longitudinal welding positioning groove is provided in the middle of the bottom surface of the channel-shaped keel. The two ends of the connecting plates are inserted into the welding positioning groove. The two ends of the connecting plates are provided with toothed welding contacts that are butt-welded to the channel-shaped keels in the welding positioning groove. The lightweight sandwich is disposed between the connecting plates and the channel-shaped keels on both sides.

[0005] This utility model innovatively employs a non-circular light steel keel welded component, comprising two vertically aligned, back-to-back channel-shaped keels. The bottom surface of each channel-shaped keel has a longitudinal welding positioning groove. Both ends of a connecting plate are equipped with serrated welding contacts, which are positioned within the welding positioning grooves. Automated welding equipment enables butt welding between the serrated welding contacts and the channel-shaped keels. The welding positioning grooves allow for precise positioning of the connecting plate, and the serrated welding contacts facilitate metal melting and fusion at the contact point, resulting in rapid and robust welding. Furthermore, the weld spatter is small and can be concealed within the welding positioning grooves, improving the appearance quality of the welded component. This structure and method enable automated welding, resulting in strong, consistent, and aesthetically pleasing welds. Furthermore, the aforementioned irregularly shaped light steel keel welded components form a three-dimensional structure through metal welding, resulting in high frame strength and enhancing the strength, load-bearing capacity, and service life of the wall panels. Moreover, since the channel-shaped keel has two spaced-apart sides, which are connected and fixed to the steel mesh or metal tension mesh at their outer ends, no other connecting components are required. The installation frame of the lightweight sandwich and steel mesh can be achieved solely using the irregularly shaped light steel keel welded components, simplifying the wall frame.

[0006] Furthermore, to achieve better welding quality, the serrated weld contacts are evenly distributed along both ends of the connecting plate, forming a sawtooth shape, and the connecting plate surface is provided with reinforcing ribs. The addition of reinforcing ribs allows the connecting plate to use a thinner steel plate, saving material.

[0007] Furthermore, the side of the trough-shaped keel is provided with a first wire-threading hole, and the two outer sides of the trough-shaped keel are respectively fixed with steel mesh or metal tension mesh by binding wire passing through the first wire-threading hole.

[0008] Furthermore, as an implementation method for achieving rapid on-site construction, the lightweight sandwich core is a B1-grade flame-retardant insulation board. The two ends of the lightweight sandwich core are placed in the installation groove formed by the two groove-shaped keel and the connecting plate of the irregular light steel keel welded component. The lightweight sandwich core is tied and fixed to the steel mesh or metal tension mesh by binding wire with a heat-insulating outer layer.

[0009] Furthermore, a fire-retardant polyurethane foam layer is provided on the bottom surface of the lightweight sandwich core and the channel-shaped keel. The gap between the two is filled with a fire-retardant polyurethane foam agent, which can not only prevent the lightweight sandwich core from shaking, but also further insulate and retain heat.

[0010] Furthermore, non-perforated, non-removable templates are respectively installed on both sides of the lightweight sandwich core. These templates are fixed to the bottom surface of the channel-shaped keel. The lightweight sandwich core is either Class A non-combustible insulation board or lightweight concrete. The Class A non-combustible insulation board is made of rock wool, mineral wool, or glass wool and needs to be isolated from water. To prevent the Class A non-combustible insulation board from absorbing moisture from the concrete poured / sprayed into the leaf wall, thus reducing its fire resistance, non-perforated, non-removable templates are used to separate the lightweight sandwich core from the leaf wall. If lightweight concrete is used as the lightweight filling layer, non-removable templates are required as formwork before the lightweight filling layer hardens, and these templates can also further strengthen the wall structure.

[0011] Furthermore, the connecting plate has a rebar positioning groove on at least one side, and a second threading hole is opened beside the rebar positioning groove. A through rebar, passing laterally through multiple irregularly shaped light steel keel welded components, is placed in the rebar positioning groove. The through rebar is tied and fixed to the connecting plate by binding wire passing through the second threading hole. The lightweight core is lightweight concrete. A reinforcing steel mesh is added inside the lightweight concrete. The transverse through rebars of the reinforcing steel mesh are positioned by the rebar positioning groove, and the reinforcing steel mesh is fixed to the irregularly shaped light steel keel welded components by binding wire passing through the second threading hole.

[0012] Furthermore, to achieve a better strengthening effect, vertical seismic reinforcement is also connected to the through steel bar.

[0013] Furthermore, the removable template is a fiber-reinforced cement board, a fiber-reinforced calcium silicate board, or a thin steel plate.

[0014] Furthermore, the leaf wall is a layer of recycled concrete, ceramsite concrete, or fine aggregate concrete, and the concrete layer of the leaf wall is connected to the lightweight sandwich or the non-removable formwork on the outside of the lightweight sandwich through a steel mesh or metal tension mesh.

[0015] Compared with the prior art, the advantages of this utility model are: its wall frame structure is simple and strong, the frame is easy to weld using automated welding methods, the welding is firm and the welding quality is stable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the irregular light steel keel welded component in Example 1.

[0018] Figure 3 for Figure 2 A schematic diagram of the structure of the medium-groove keel.

[0019] Figure 4 for Figure 2 A schematic diagram of the middle connecting plate.

[0020] Figure 5 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0021] Figure 6 This is a structural schematic diagram of Embodiment 3 of the present invention.

[0022] Figure 7 This is a schematic diagram of the connecting plate of the irregular light steel keel welded component in Example 3.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. Detailed Implementation

[0024] Example 1: As Figures 1 to 4 As shown, an irregularly shaped light steel keel sandwich insulation wall includes a keel, a light sandwich 2, and leaf walls 3 on both sides of the light sandwich 2. There is also a steel mesh or metal stretched mesh 4 with the leaf wall material attached between the light sandwich 2 and the leaf walls 3. The keel is composed of multiple vertically arranged irregularly shaped light steel keel welded components 1. Each irregularly shaped light steel keel welded component 1 includes two vertically facing back-to-back channel-shaped keels 11. The bottom surfaces of the two channel-shaped keels 11 are parallel to the center plane of the wall and are connected by multiple spaced connecting plates 12. The connecting plates 12 are parallel and spaced apart, and are vertical, i.e., parallel to the vertical plane, and perpendicular to the bottom surface of the channel-shaped keel 11. A longitudinal welding positioning groove 111 is provided in the middle of the bottom surface of the channel-shaped keel 11. The welding positioning groove 111 is longitudinally extended on the channel-shaped keel 11, and its groove width is adapted to the thickness of the connecting plate 12. The two ends of the connecting plate 12 are inserted into the welding positioning groove 111. The two ends of the connecting plate 12 are provided with toothed welding contacts 121. The two ends of the connecting plate 12 are positioned in the welding positioning groove 111 and are butt-welded to the channel-shaped keel 11 in the welding positioning groove 111 through the toothed welding contacts 121.

[0025] The connecting plate 12 has reinforcing ribs 122 on its surface. These ribs allow for the use of thinner steel plates, saving material. In this embodiment, the reinforcing ribs 122 are horizontal parallel ribs, with simple shapes and molds, making implementation easy. The toothed weld contacts are evenly distributed along both ends of the connecting plate 12, forming a serrated shape. The connecting plate 12 can be precisely positioned via the welding positioning groove 111. The toothed weld contacts facilitate metal melting and fusion at the contact points, resulting in fast and strong welding. Furthermore, the weld spatter is small and can be hidden within the welding positioning groove 111, improving the appearance quality of the welded part. This structure and method enable automated welding, resulting in strong, stable, and aesthetically pleasing welded parts.

[0026] The channel-shaped keel 11 has two sides, and the ends of the two sides are provided with reinforcing rolled edges 112. This serves two purposes: firstly, it strengthens the channel-shaped keel 11, and secondly, it increases the contact area with the reinforcing mesh or metal stretched mesh 4. First wire-passing holes 113 are provided on both sides of the channel-shaped keel 11. Reinforcing mesh or metal stretched mesh 4 is fixed to the two outer sides of the channel-shaped keel 11 along the width direction of the wall by binding wires passing through the first wire-passing holes 113. The aforementioned irregularly shaped light steel keel welded component 1 is a three-dimensional structure formed by metal welding. Its high frame strength improves the strength, load-bearing capacity, and service life of the wall panel. Moreover, since the channel-shaped keel 11 has two spaced-apart sides, and the outer ends of these sides are connected and fixed to the reinforcing mesh or metal stretched mesh 4, no other connecting parts are needed. The installation frame of the lightweight sandwich core 2 and the reinforcing mesh or metal stretched mesh 4 is achieved solely using the irregularly shaped light steel keel welded component 1, simplifying the wall frame.

[0027] like Figure 1 As shown, a lightweight sandwich core 2 is provided between the connecting plate 12 and the channel-shaped keel 11 on both sides. In this embodiment, the lightweight sandwich core 2 is a B1-grade flame-retardant insulation board. The two ends of the lightweight sandwich core 2 are placed in the installation groove formed by the two channel-shaped keels 11 and the connecting plate 12 of the irregular light steel keel welded part 1. The lightweight sandwich core 2 is tied and fixed to the steel mesh or metal tension mesh 4 by binding wire with a heat-insulating outer layer. A fire-retardant polyurethane foam layer is provided on the bottom surface of the lightweight sandwich core 2 and the channel-shaped keel 11. The gap between the two is filled with fire-retardant polyurethane foam, which can not only prevent the lightweight sandwich core 2 from shaking, but also further insulate the heat. The leaf wall 3 is a layer of recycled concrete, ceramsite concrete or fine stone concrete. The concrete layer of the leaf wall 3 is connected to the lightweight sandwich core 2 through the steel mesh or metal tension mesh 4. The leaf wall 3 hardening material is made of ceramsite concrete or fine stone concrete spraying, or it can be recycled concrete made from solid waste such as construction waste. It is connected to the lightweight sandwich core 2 and wrapped and attached to the steel mesh or metal tension mesh 4 to form the outer layer of the wall.

[0028] Example 2: The structure and interrelationships of the components in this example are basically the same as those in Example 1, except that, for example... Figure 5 As shown, non-perforated, non-removable templates 5 are respectively installed on both sides of the lightweight sandwich core 2. The non-removable templates 5 are fixed to the bottom surface of the channel-shaped keel 11. In this embodiment, the lightweight sandwich core 2 is a Class A non-combustible insulation board. The concrete layer of the leaf wall 3 is connected to the non-removable template 5 through the steel mesh or metal tension mesh 4. Class A non-combustible insulation boards are generally rock wool, mineral wool, or glass wool. To prevent the moisture in the concrete poured / sprayed into the leaf wall 3 from being absorbed by the Class A non-combustible insulation board and reducing the fire resistance quality, non-perforated, non-removable templates 5 are used to separate the lightweight sandwich core 2 from the leaf wall 3. The non-removable template 5 can also further strengthen the strength of the wall. In this embodiment, the non-removable template 5 is made of fiber-reinforced calcium silicate board material.

[0029] Example 3: The structure and interrelationships of the components in this example are basically the same as those in Example 2, except that, for example... Figure 6 and Figure 7 As shown, the connecting plate 12 of the irregular light steel keel welded component 1 has a rebar positioning groove 123 on the lower side center edge. The rebar positioning groove 123 is an arc groove. A second threading hole 124 is opened above the rebar positioning groove 123. A through rebar 6 that passes horizontally through multiple irregular light steel keel welded components 1 is provided in the rebar positioning groove 123. The through rebar 6 is tied and fixed to the connecting plate 12 by the binding wire passing through the second threading hole 124. Several vertical seismic reinforcement bars 7 are also connected to the through rebar 6. The two can be connected by spot welding or binding to form a reinforcing steel mesh in the center of the wall panel. In this embodiment, the lightweight sandwich core 2 is lightweight concrete, which serves as a lightweight filling layer for fireproofing, heat insulation, sound insulation, and thermal insulation of the wall. The lightweight filling layer material can be recycled lightweight concrete from construction waste or other solid waste, lightweight ceramsite concrete, or lightweight granular slurry such as perlite, vermiculite, and foam, as well as foamed cement slurry. The formwork 5 is used as the formwork for pouring, and the formwork 5 is made of fiber-reinforced cement board or thin steel plate.

[0030] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A non-circular lightweight steel keel sandwich insulated wall, comprising a keel, a lightweight sandwich core, and leaf walls on both sides of the lightweight sandwich core, characterized in that: The keel is composed of multiple vertically arranged irregularly shaped light steel keel welded components. Each irregularly shaped light steel keel welded component includes two vertically facing back-to-back channel-shaped keels. The bottom surfaces of the two channel-shaped keels are parallel to the center plane of the wall and are connected by multiple spaced-apart connecting plates. The connecting plates are vertical and perpendicular to the bottom surfaces of the channel-shaped keels. A longitudinal welding positioning groove is provided in the middle of the bottom surface of the channel-shaped keel. The two ends of the connecting plates are inserted into the welding positioning groove. The two ends of the connecting plates are provided with toothed welding contacts that are butt-welded to the channel-shaped keels in the welding positioning groove. A lightweight sandwich is provided between the connecting plates and the channel-shaped keels on both sides.

2. The irregularly shaped light steel keel sandwich insulated wall according to claim 1, characterized in that: The toothed welding contacts are evenly distributed on both ends of the connecting plate and are serrated. The surface of the connecting plate is provided with reinforcing ribs.

3. The irregularly shaped light steel keel sandwich insulated wall according to claim 1, characterized in that: The side of the trough-shaped keel is provided with a first wire-threading hole, and the two outer sides of the trough-shaped keel are respectively fixed with steel mesh or metal tension mesh by binding wire passing through the first wire-threading hole.

4. The irregularly shaped light steel keel sandwich insulated wall according to claim 3, characterized in that: The lightweight sandwich core is a B1-grade flame-retardant insulation board. The two ends of the lightweight sandwich core are placed in the mounting groove formed by the two grooved keels and the connecting plate of the irregular light steel keel welded component. The lightweight sandwich core is tied and fixed to the steel mesh or metal tension mesh by binding wire with a heat-insulating outer layer.

5. The irregularly shaped light steel keel sandwich insulated wall according to claim 4, characterized in that: The lightweight sandwich core and the bottom surface of the grooved keel are provided with a fire-resistant polyurethane foam layer.

6. The irregularly shaped light steel keel sandwich insulated wall according to claim 1, characterized in that: On both sides of the lightweight sandwich core, there are non-perforated templates that can be removed without holes. The templates are fixed to the bottom surface of the grooved keel. The lightweight sandwich core is a Class A non-combustible insulation board or lightweight concrete.

7. The irregularly shaped light steel keel sandwich insulated wall according to claim 6, characterized in that: The connecting plate has a rebar positioning groove on at least one side, and a second threading hole is opened on the side of the rebar positioning groove. A through rebar is provided in the rebar positioning groove, which passes through multiple irregular light steel keel welded parts laterally. The through rebar is tied and fixed to the connecting plate by binding wire passing through the second threading hole. The lightweight sandwich core is lightweight concrete.

8. The irregularly shaped light steel keel sandwich insulated wall according to claim 7, characterized in that: Vertical seismic reinforcement is also connected to the through steel bar.

9. The irregularly shaped light steel keel sandwich insulated wall according to claim 6, characterized in that: The removable formwork is fiber-reinforced cement board, fiber-reinforced calcium silicate board, or thin steel plate.

10. The irregularly shaped light steel keel sandwich insulated wall according to any one of claims 1-9, characterized in that: The leaf wall is a layer of recycled concrete, ceramsite concrete, or fine aggregate concrete. The concrete layer of the leaf wall passes through a steel mesh or metal tension mesh and is connected to the lightweight sandwich or the non-removable formwork on the outside of the lightweight sandwich.

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