Preparation method of autoclaved aerated concrete plate with built-in insulation board

Abstract

The invention discloses a preparation method of an autoclaved aerated concrete plate with a built-in insulation board, and belongs to the technical field of production of aerated concrete plates. The preparation method comprises the following steps: placing the support frame; the concentric-square-shaped frame is placed on the supporting frame; the steel chisel mounting cross beam is mounted on the concentric-square-shaped frame; mounting a steel chisel on the steel chisel mounting cross beam; the mesh mounting piece is mounted on the steel chisel; a connecting piece is installed between the two reinforcing mesh pieces of the reinforcing mesh set; the reinforcing mesh is hung on the mesh mounting piece; the heat preservation plate is installed between the two steel bar meshes; injecting the slurry into a mold; feeding the steel chisel, the reinforcing mesh and the insulation board into a mold of the grouting material, and pre-curing to form a green body; pulling out the steel chisel from the mesh mounting piece, and demolding; the green body is cut and then subjected to steam curing; after steam curing is completed, the autoclaved aerated concrete plate is prepared. According to the invention, integrated production of the whole sandwich thermal insulation composite board can be realized, and the production efficiency of the composite wallboard is improved.

Description

Technical Field

[0001] The invention relates to the technical field of aerated concrete board production, in particular to a method for preparing an autoclaved aerated concrete board with a built-in thermal insulation board. Background Art

[0002] As a new type of wall material, autoclaved aerated concrete has the advantages of light weight, heat preservation, sound insulation, fire resistance, etc. It has gradually replaced traditional clay bricks and solid bricks and become one of the commonly used wall materials in modern buildings. However, autoclaved aerated concrete still has some problems in practical applications, such as easy cracking, insufficient heat insulation performance, and poor sound absorption and sound insulation effect.

[0003] At present, the manufacturing process of autoclaved aerated concrete panels is relatively complicated, and problems such as cracks are prone to occur during use. In order to solve these problems, some patents have proposed a method for preparing a composite panel by adding an insulation board between the inner blade of the substrate and the outer blade of the substrate. For example, patent CN115319904A discloses a fully automatic production line for aerated concrete composite insulation wall panels, which can quickly and efficiently realize the production of composite wall panels and reduce workload; but the production process is based on the formed ALC panels for production, and the process still involves problems such as the transportation of ALC panels. Compared with the production method of the composite wall panels in the production line in the present invention, its efficiency is lower. This method requires the autoclaved aerated concrete panels to be compounded after they are formed, and the construction process is complicated. In addition, the prepared composite panels have poor structural integrity and are difficult to meet high standards.

[0004] Therefore, it is necessary to improve the existing autoclaved aerated concrete board manufacturing process, so as to prepare autoclaved aerated concrete composite boards with good structural integrity, so that they can be more widely used in the construction field. Summary of the invention

[0005] The present invention provides a method for preparing an autoclaved aerated concrete board with a built-in thermal insulation board. The thermal insulation board is placed and installed between steel meshes, the steel meshes and the thermal insulation board are moved as a whole into a mold, slurry is poured into the mold, and after pre-curing and autoclaving, an autoclaved aerated concrete board with a built-in thermal insulation board is prepared, thereby realizing the integrated production of an integral sandwich thermal insulation composite wallboard, and the process is simple, which can greatly save production costs and improve the production efficiency of the composite wallboard. Compared with the traditional production method, the autoclaved aerated concrete board produced by the preparation method of the present invention has better structural integrity.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] The method for preparing an autoclaved aerated concrete board with a built-in thermal insulation board comprises the following steps:

[0008] S1. Place a support frame on the ground;

[0009] S2. Place the circular frame on the support frame;

[0010] S3, fixing the steel drill installation beam on the circular frame; the steel drill installation beams are arranged on the circular frame at intervals and are parallel to each other, and the steel drill installation beams extend in the first direction;

[0011] S4, fixing a plurality of steel chisels on the steel chisel mounting beam, wherein the steel chisels extend in the second direction;

[0012] The steel drill installation crossbeam is a long rectangular cavity structure, the upper part of the steel drill installation crossbeam is provided with steel drill placement holes spaced evenly along its length direction and penetrating vertically, the lower part of the steel drill installation crossbeam is provided with a steel drill fastening hole aligned vertically with the steel drill placement hole, and the side wall of the steel drill fastening hole is provided with two insertion guide grooves penetrating vertically and symmetrically about the center of the steel drill fastening hole;

[0013] A rotary handle is provided at one end of the steel drill; a first protrusion and a second protrusion are provided at one end of the steel drill close to the rotary handle, and the first protrusion and the second protrusion are arranged along the axial direction of the steel drill; a positioning hole penetrating in the radial direction is provided below the second protrusion of the steel drill;

[0014] The distance between the bottom surface of the rotary handle and the top surface of the second protrusion is equal to the height of the steel drill installation beam, and the distance between the bottom surface of the first protrusion and the top surface of the second protrusion is equal to the wall thickness of the steel drill installation beam;

[0015] The specific process of installing the steel drill to the steel drill installation beam is as follows: the second protrusion of the steel drill first passes through the steel drill placement hole, and then passes through the insertion guide groove of the side wall of the steel drill fastening hole, and the bottom surface of the rotary handle is connected with the top surface of the steel drill installation beam. After rotating the rotary handle, the top surface of the second protrusion is connected with the bottom surface of the steel drill installation beam, and the first protrusion is connected with the bottom surface of the inner cavity of the steel drill installation beam, and the steel drill is fixedly connected to the steel drill installation beam; the fastening rod is passed through the positioning hole of the steel drill installed on the same steel drill installation beam to perform secondary positioning on each steel drill;

[0016] S5, installing the mesh mounting piece onto the steel chisel;

[0017] The mesh installation part comprises a mounting ring with an annular opening, a connecting arm arranged on the outer side wall of the mounting ring, and a hanging part arranged on one end of the connecting arm away from the mounting ring, the opening spacing of the mounting ring is smaller than the diameter of the steel bar, and a steel mesh installation groove is provided on the hanging part; the mounting ring is fixedly arranged on the steel bar by elastic matching;

[0018] The mounting ring is buckled to the middle of the steel drill and the end away from the rotating handle;

[0019] The hanging directions of any adjacent mesh mounting parts are arranged in opposite directions;

[0020] S6. Hanging the prepared steel mesh on the mesh mounting member, embedding the transverse ribs of the steel mesh into the steel mesh mounting groove, and extending the steel mesh in the second direction and the third direction; the steel mesh includes transverse ribs and longitudinal ribs, and the transverse ribs and the longitudinal ribs are perpendicularly staggered to form the steel mesh;

[0021] A plurality of steel drills along the third direction constitute a steel drill group, and two steel mesh sheets between two adjacent steel drill groups in the first direction constitute a steel mesh group;

[0022] A connector is installed between two steel mesh sheets of the steel mesh group, and the connector is used to connect the two steel mesh sheets of the steel mesh group and improve the strength of the autoclaved aerated concrete slab;

[0023] Install insulation board supports at intervals along the third direction at the bottom ends of the two steel mesh sheets of the steel mesh group;

[0024] S7, the transmission device is connected to the return frame, the return frame together with the steel chisel and the steel mesh is lifted, the return frame is separated from the support frame, the insulation board is installed between the two steel meshes of the steel mesh group along the third direction, the insulation board is installed in sections in the second direction, and the adjacent insulation boards in the second direction are separated by the connecting piece;

[0025] The bottom surface of the insulation board at the bottom end in the second direction is connected to the insulation board supporting member, and the top surface of the insulation board at the top end in the second direction is connected to the side wall of the fastening rod;

[0026] S8, inject the prepared slurry into the mold, connect the transmission device to the return frame, and send the return frame together with the steel chisel, the steel mesh and the insulation board into the mold, so that the insulation board support part contacts the bottom surface of the mold;

[0027] S9, pre-curing to form a green body;

[0028] S10, when the strength of the pre-cured green body reaches the set requirement, the transmission device is connected to the return frame, the return frame is lifted, and the return frame drives the steel chisel to be pulled out from the mesh mounting piece, and the steel mesh, the connecting piece, the insulation board supporting piece and the insulation board remain in the green body;

[0029] Fill the hole left by pulling out the steel chisel with slurry and perform demoulding;

[0030] S11, turning over the blank by a turning machine, and cutting the blank by a cutting device after turning over, cutting at the center position between two adjacent insulation boards to form a plurality of composite wall panels;

[0031] S12, placing the cut composite wall panel assembly into a steam curing kettle for autoclave curing;

[0032] S13, removing the composite wall panel after autoclaving and curing from the autoclave to prepare an autoclaved aerated concrete panel with a concrete layer and an insulation board.

[0033] According to the aforementioned method for preparing the autoclaved aerated concrete board with a built-in thermal insulation board, the top of the upper steel bar placement hole of the steel bar installation beam is provided with a first positioning protrusion and a second positioning protrusion along the circumferential direction;

[0034] A third protrusion is provided at the middle part of the steel drill and at one end away from the rotating handle;

[0035] A blocking protrusion is provided at the bottom of the mounting ring of the mesh mounting piece;

[0036] In S4, during the process of fixing the steel drill to the steel drill installation beam, when the side of the rotary handle contacts the side of the first positioning protrusion, the second protrusion passes through the insertion guide groove; when the rotary handle is rotated until its side contacts the side of the second positioning protrusion, the second protrusion rotates away from the insertion guide groove, and the top surface of the second protrusion contacts the bottom surface of the steel drill installation beam, thereby realizing the steel drill and the steel drill installation beam;

[0037] In S5, after the mesh installation piece is installed on the steel chisel, the third protrusion is connected to the blocking protrusion, the top surface of the third protrusion is connected to the bottom surface of the installation ring, the side surface of the third protrusion is connected to the side surface of the blocking protrusion, and the third protrusion drags the mesh installation piece;

[0038] Before S10, it also included:

[0039] The handle is screwed until the side surface of the handle contacts the side surface of the first positioning protrusion, and at this time, the third protrusion of the steel chisel is aligned with the opening of the mounting ring in the upper and lower parts.

[0040] Furthermore, S6 also includes: installing the insulation board positioning piece onto two steel mesh sheets of the steel mesh group;

[0041] The insulation board positioning piece includes a mounting buckle and a positioning plate connected to the mounting buckle, the mounting buckle is connected to the steel mesh buckle, and the insulation board positioning pieces installed on the two steel meshes of the steel mesh group are arranged relatively;

[0042] In S7, the insulation board is installed between two insulation board positioning members along the third direction.

[0043] Furthermore, first bolt holes are provided at both ends of the steel chisel mounting beam, and second bolt holes are provided on the circular frame and arranged at intervals corresponding to the first bolt holes. The steel chisel mounting beam is fixedly connected to the circular frame by fastening bolts.

[0044] Further, in S6, the connecting member is an I-shaped steel plate, a C-shaped steel plate or a Z-shaped steel plate extending in a third direction, and the edge end of the I-shaped steel plate, the C-shaped steel plate or the Z-shaped steel plate is connected and fixed to two steel meshes of the steel mesh group; or, the connecting member is a steel truss, and the two ends of the steel truss are connected and fixed to two steel meshes of the steel mesh group.

[0045] Furthermore, the insulation board supporting member is a fastening C-shaped ring, and the two ends of the fastening C-shaped ring are connected to two steel mesh sheets of the steel mesh group; or, the insulation board supporting member is a steel plate.

[0046] Furthermore, the insulation board is a high temperature resistant board, specifically one of silicon plastic board and rock wool, and the thickness of the insulation board is not less than 90 mm.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] (1) The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board of the present invention improves the key production equipment of the existing production line, introduces more efficient and longer-lasting production equipment, realizes the integrated production of the integral sandwich thermal insulation composite board, makes the production process more convenient, can greatly save production costs, and improves the production efficiency of the composite wallboard;

[0049] (2) The present invention has a unique structural design for the steel bar and the mesh installation piece, which ensures the accuracy of the steel mesh installation position, and can conveniently fix the steel bar on the steel bar installation beam, and the steel bar can be easily installed and detached from the mesh installation piece;

[0050] (3) The present invention optimizes the design of the steel drill installation beam. The first positioning protrusion and the second positioning protrusion arranged on the top of the steel drill installation beam can play a positioning role in the installation and detachment of the steel drill on the steel drill installation beam, thereby improving the accuracy of the production process and further improving the production efficiency;

[0051] (4) The present invention provides an insulation board positioning piece on the steel mesh, which can ensure the spacing between the steel mesh and the insulation board, avoid the position of the insulation board from being offset during the pouring of slurry, and ensure that the insulation board will not be cut or the insulation board will be biased to one side of the board body during the subsequent cutting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] FIG1 is a perspective view of the assembly state of the support frame, the return frame, the steel drill installation beam, the steel drill and the fastening rod in step S4;

[0053] FIG2 is a partial enlarged view of point A in FIG1;

[0054] FIG3 is a perspective view of a support frame;

[0055] FIG4 is a perspective view of the return frame;

[0056] FIG5 is a perspective view of the steel drill installation beam, steel drill, fastening rod and mesh installation member in an assembled state;

[0057] Fig. 6 is a cross-sectional view of the steel drill assembly state of the crossbeam and the steel drill;

[0058] Fig. 7 is a perspective view of the steel chisel mounting crossbeam;

[0059] FIG8 is a top partial cross-sectional view of the steel drill installation beam;

[0060] FIG9 is a perspective view of the steel chisel and mesh mounting member in an assembled state;

[0061] FIG10 is a partial enlarged view of point B in FIG9;

[0062] FIG11 is a perspective view of a steel drill;

[0063] FIG12 is a perspective view of a mesh mounting member;

[0064] 13 is a perspective view of the steel drill installation beam, steel drill, fastening rod, mesh installation member, steel mesh and connecting member assembly state in step S7;

[0065] 14 is a front view of the steel drill installation beam, steel drill, fastening rod, mesh installation member, steel mesh and connecting member assembly state in step S7;

[0066] FIG15 is a perspective view of the insulation board after installation in step S8;

[0067] Fig.16 This is a front view after the insulation board is installed in step S8;

[0068] FIG17 is a perspective view of the assembled state of the steel mesh and the insulation board positioning member;

[0069] FIG18 is a front view of the steel mesh and the insulation board positioning member in the assembled state;

[0070] FIG19 is a perspective view of a thermal insulation board positioning member;

[0071] FIG20 is a perspective view of another insulation board positioning member;

[0072] FIG21 is a perspective view of step S10 after adding slurry;

[0073] FIG22 is a perspective view of the steel drill after being pulled out in step S11;

[0074] FIG23 is a three-dimensional view of the prepared autoclaved aerated concrete board with built-in thermal insulation board;

[0075] FIG. 24 is a three-dimensional partial cross-sectional view of the prepared autoclaved aerated concrete board with built-in thermal insulation board.

[0076] In the figure, 100, support frame; 101, steel support pillar; 102, steel support beam; 200, return frame; 201, second bolt hole; 202, lifting connection block; 300, steel drill installation beam; 301, steel drill placement hole; 302, steel drill fastening hole; 303, insertion guide groove; 304, first positioning protrusion; 305, second positioning protrusion; 306, first bolt hole; 400, steel drill; 401, rotary handle; 402, first protrusion; 403, second protrusion; 404, positioning hole; 405, first Three protrusions; 500, fastening rod; 600, mesh mounting part; 601, mounting ring; 602, connecting arm; 603, hanging part; 604, steel mesh mounting groove; 605, blocking protrusion; 700, steel mesh; 701, transverse ribs; 702, longitudinal ribs; 800, connecting part; 900, insulation board supporting part; 110, insulation board; 120, mold; 130, blank; 140, insulation board positioning part; 141, mounting buckle; 142, positioning plate; 150, fastening bolt; 160, concrete layer. DETAILED DESCRIPTION

[0077] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0078] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0079] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0080] The embodiment of the present invention, in conjunction with FIG. 1 to FIG. 22 of the accompanying drawings of the specification, illustrates a method for preparing an autoclaved aerated concrete board with a built-in insulation board provided by the embodiment of the present invention, which specifically includes the following steps:

[0081] S1. Place a support frame 100 on the ground. The support frame 100 is used to support the circular frame 200, so as to facilitate the assembly of the steel drill installation beam 300 and the steel drill 400 on the circular frame 200.

[0082] Specifically, the support frame 100 includes a steel support column 101 and a steel support crossbeam 102 disposed at the top of the steel support column 101. As shown in FIG3, the size of the support frame 100 should meet the size of the autoclaved aerated concrete board required to produce the built-in insulation board. The support frame 100 can also be other supporting structures, such as a three-dimensional rectangular parallelepiped frame, and the structure that can support the circular frame 200 is the support frame 100 protected by the present invention.

[0083] S2, placing the retractable frame 200 on the support frame 100. The retractable frame 200 is a frame structure formed by welding I-shaped steel beams, as shown in FIG4. In order to facilitate the transportation of the retractable frame 200 in the subsequent production process, two lifting connection blocks 202 are respectively provided on the left and right sides of the top of the retractable frame 200 for connecting the transmission device, as shown in FIG2.

[0084] S3. The steel drill installation beams 300 are fixedly installed on the circular frame 200; the steel drill installation beams 300 are arranged on the circular frame 200 at intervals and are parallel to each other, and the steel drill installation beams 300 extend in a first direction.

[0085] Specifically, first bolt holes 306 are provided at both ends of the steel drill installation beam 300, and second bolt holes 201 arranged at intervals corresponding to the first bolt holes 306 are provided on the circular frame 200, and the steel drill installation beam 300 is fixedly connected to the circular frame 200 by fastening bolts 150. The fixed connection between the steel drill installation beam 300 and the circular frame 200 can also be a slot connection, and the circular frame 200 is provided with a slot, and the bottom end of the steel drill installation beam 300 is embedded in the slot.

[0086] S4. Fix a plurality of steel chisels 400 onto the steel chisel mounting crossbeam 300 , and the steel chisels 400 extend in the second direction, as shown in FIG. 1 and FIG. 5 .

[0087] The structure of the steel drill installation crossbeam 300 is shown in Figures 7 and 8. The steel drill installation crossbeam 300 is a long rectangular cavity structure, and the upper part of the steel drill installation crossbeam 300 is provided with steel drill placement holes 301 spaced evenly along its length and penetrating vertically, and the lower part of the steel drill installation crossbeam 300 is provided with a steel drill fastening hole 302 aligned vertically with the steel drill placement hole 301, and the side wall of the steel drill fastening hole 302 is provided with two insertion guide grooves 303 penetrating vertically and symmetrically about the center of the steel drill fastening hole 302;

[0088] The structure of the steel chisel 400 is shown in Figure 11. A rotary handle 401 is provided at one end of the steel chisel 400; a first protrusion 402 and a second protrusion 403 are provided at one end of the steel chisel 400 close to the rotary handle 401, and the first protrusion 402 and the second protrusion 403 are arranged along the axial direction of the steel chisel 400; a positioning hole 404 that penetrates radially is opened below the second protrusion 403 of the steel chisel 400.

[0089] The distance between the bottom surface of the rotary handle 401 and the top surface of the second protrusion 403 is equal to the height of the steel drill installation beam 300 , and the distance between the bottom surface of the first protrusion 402 and the top surface of the second protrusion is equal to the wall thickness of the steel drill installation beam 300 .

[0090] The specific process of installing the steel drill 400 to the steel drill installation beam 300 is as follows: the second protrusion 403 of the steel drill 400 first passes through the steel drill placement hole 301, and then passes through the insertion guide groove 303 of the side wall of the steel drill fastening hole 302, the bottom surface of the rotary handle 401 is connected to the top surface of the steel drill installation beam 300, and after rotating the rotary handle 401, the top surface of the second protrusion 403 is connected to the bottom surface of the steel drill installation beam 300, and the first protrusion 402 is connected to the bottom surface of the inner cavity of the steel drill installation beam 300, as shown in Figures 5 and 6. The steel drill 400 is fixedly connected to the steel drill installation beam 300. The fastening rod 500 is passed through the positioning hole 404 of the steel drill 400 installed on the same steel drill installation beam 300 to perform secondary positioning on each steel drill 400.

[0091] S5, installing the mesh mounting member 600 onto the steel chisel 400.

[0092] The structure of the mesh mounting member 600 is shown in FIG12. The mesh mounting member 600 comprises a mounting ring 601 with an annular opening, a connecting arm 602 disposed on the outer side wall of the mounting ring 601, and a hanging member 603 disposed at one end of the connecting arm 602 away from the mounting ring 601. The opening spacing of the mounting ring 601 is smaller than the diameter of the steel drill 400. The hanging member 603 is provided with a steel mesh mounting groove 604. The mounting ring 601 is fixedly disposed on the steel drill 400 by elastic fitting. The connection structure of the mesh mounting member 600 and the steel drill 400 is shown in FIG11. The mounting ring 601 is buckled at the middle part of the steel drill 400 and at one end away from the rotary handle 401.

[0093] The directions of the hangers 603 of any adjacent mesh mounting members 600 are opposite, that is, the directions of the hangers 603 of any two adjacent mesh mounting members 600 are opposite. Multiple mesh mounting members 600 work together to ensure the stable installation of the steel mesh 700.

[0094] The mesh mounting member 600 has a simple structure. The hanger 603 is arranged on one side of the mounting ring 601 of the mesh mounting member 600. Compared with the structure in which the hangers 603 are arranged on two opposite sides of the mounting ring 601, the hanger 603 is arranged on one side, which is convenient for factory production, reduces production materials, and reduces production costs.

[0095] During the installation process of the mounting ring 601 of the mesh mounting piece 600 and the steel bar 400, the mounting ring 601 undergoes elastic deformation, and the opening width of the annular opening becomes larger, allowing the steel bar 400 to smoothly enter the mounting ring 601; when the steel bar 400 completely enters the mounting ring 601, the mounting ring 601 is deformed and restored, and the inner wall of the mounting ring 601 contacts the circumferential surface of the steel bar 400.

[0096] It should be noted that the elastic material of the mesh mounting member 600 is preferably but not limited to ABS plastic, and other elastic and corrosion-resistant materials can also be used to make the mesh mounting member 600 in this embodiment.

[0097] S6, hang the prepared steel mesh 700 on the mesh installation member 600, embed the transverse ribs 701 of the steel mesh 700 into the steel mesh installation groove 604, and the steel mesh 700 extends in the second direction and the third direction; the steel mesh 700 includes transverse ribs 701 and longitudinal ribs 702, and the transverse ribs 701 and the longitudinal ribs 702 are perpendicularly staggered to each other to form the steel mesh 700;

[0098] The plurality of steel drills 400 along the third direction constitute a steel drill group, and the two steel mesh sheets 700 between two adjacent steel drill groups in the first direction constitute a steel mesh group;

[0099] A connector 800 is installed between two steel mesh sheets 700 of the steel mesh group, and the connector 800 is used to connect the two steel mesh sheets of the steel mesh group and improve the strength of the autoclaved aerated concrete board;

[0100] At the bottom ends of the two steel mesh sheets 700 of the steel mesh group, insulation board supports 900 are installed at intervals along the third direction;

[0101] Specifically, the connector 800 is an I-shaped steel plate, C-shaped steel plate or Z-shaped steel plate extending in a third direction, and the edge end of the I-shaped steel plate, C-shaped steel plate or Z-shaped steel plate is connected and fixed to the two steel mesh sheets 700 of the steel mesh group, specifically by welding; or, the connector 800 is a steel truss, and the two ends of the steel truss are connected and fixed to the two steel mesh sheets 700 of the steel mesh group, and the specific connection and fixing method is welding or binding. The height of various connectors 800 can be freely adjusted according to the thickness of the plate, and the material can be steel, FRP glass fiber reinforced plastic and other materials to ensure that the connector 800 has greater rigidity and is not easy to deform.

[0102] Specifically, the insulation board support 900 is a fastening C-shaped ring, the two ends of which are connected to two steel mesh sheets of the steel mesh group, and the fastening C-shaped ring is formed by bending steel bars. Alternatively, the insulation board support 900 is a steel plate.

[0103] Before installing the steel mesh 700, the steel mesh 700 is immersed in a phenolic resin slurry pool to attach a protective layer on the surface of the steel mesh 700 that can ensure effective bonding between the steel bars and the autoclaved aerated concrete.

[0104] The transverse ribs 701 and longitudinal ribs 702 in the prepared concrete slab can ensure that the steel bars and connectors 800 in the concrete slab are connected to each other to form a system, which facilitates the positioning of the connectors 800, thereby ensuring that the various components of the concrete slab are fastened and connected to form a complete component, so that the concrete slab has a higher structural integrity.

[0105] S7, the transmission device connects the return frame 200, and the return frame 200 is lifted together with the steel bar 400 and the steel mesh 700, and the return frame 200 is separated from the support frame 100, and the insulation board 110 is installed between the two steel meshes 700 of the steel mesh group along the third direction, and the insulation board 110 is installed in sections in the second direction (that is, the insulation board 110 is installed in sections in the height direction), and the adjacent insulation boards 110 in the second direction are separated by the connecting piece 800. The bottom surface of the insulation board 110 at the bottom end of the second direction is connected to the insulation board support piece 900, and the top surface of the insulation board 110 at the top end of the second direction is connected to the side wall of the fastening rod 500, as shown in Figures 15 and 16. Fig.16 shown.

[0106] The insulation board 110 is a high temperature resistant board, specifically one of silicon plastic board and rock wool; if the 83% energy saving requirement is to be met, the thickness of each type of insulation board is: when the insulation board 110 is a silicon plastic board, its thickness is not less than 90 mm; when the insulation board 110 is rock wool, its thickness is not less than 90 mm.

[0107] S8. Inject the prepared slurry into the mold 120. Connect the transmission device to the retractable frame 200. Send the retractable frame 200 together with the steel bar 400, the steel mesh 700 and the insulation board 110 into the mold 120 so that the insulation board support 900 contacts the bottom surface of the mold 120.

[0108] S9, pre-curing to form a green body 130, as shown in Figures 21 and 22. Specifically, the pre-curing temperature of the green body 130 is 50-60°C.

[0109] S10, after the strength of the pre-cured blank 130 reaches the set requirement, the transmission device connects the return frame 200, lifts the return frame 200, and the return frame 200 drives the steel bar 400 to be pulled out from the mesh installation part 600, and the steel mesh 700, the connecting part 800, the insulation board holding part 900 and the insulation board 110 remain in the blank 130. The hole left by pulling out the steel bar 400 is filled with slurry, and demoulding is performed.

[0110] S11, turning over the blank 130 by a turning machine, and cutting the blank 130 by a cutting device after turning over, and cutting at the center position between two adjacent insulation boards 110 to form a plurality of composite wall panels.

[0111] S12, placing the cut composite wall panel assemblies into a steam curing kettle for autoclave curing. Specifically, the steam curing temperature of the steam curing kettle is 200-210°C.

[0112] S13, the composite wall panel after autoclaving is removed from the autoclave to prepare an autoclaved aerated concrete panel having a concrete layer 160 sandwiched with an insulation board 110.

[0113] The prepared autoclaved aerated concrete board with built-in thermal insulation board is shown in FIGS. 23 and 24 .

[0114] The preparation method of the autoclaved aerated concrete board with built-in insulation board of the present invention improves the key production equipment of the existing production line, introduces more efficient production equipment with longer service life, realizes the integrated production of the whole sandwich insulation composite board, makes the production process more convenient, can greatly save production costs, and improves the production efficiency of the composite board.

[0115] As a preferred embodiment, the top of the upper steel drill placement hole 301 of the steel drill installation beam 300 is provided with a first positioning protrusion 304 and a second positioning protrusion 305 along the circumferential direction; the middle part of the steel drill 400 and the end away from the rotary handle 401 are provided with a third protrusion 405; and the bottom of the mounting ring 601 of the mesh mounting member 600 is provided with a blocking protrusion 605. In step S4, during the process of fixing the steel drill 400 to the steel drill installation beam 300, when the side of the rotary handle 401 contacts the side of the first positioning protrusion 304, the second protrusion 403 passes through the insertion guide groove 303; when the rotary handle 401 is screwed until its side contacts the side of the second positioning protrusion 305, the second protrusion 403 rotates away from the insertion guide groove 303, and the top surface of the second protrusion 403 contacts the bottom surface of the steel drill installation beam 300, so that the steel drill 400 is fixed to the steel drill. Install the crossbeam 300; in step S5, after the mesh mounting member 600 is mounted on the steel drill 400, the third protrusion 405 is connected to the blocking protrusion 605, the top surface of the third protrusion 405 is connected to the bottom surface of the mounting ring 601, the side surface of the third protrusion 405 is connected to the side surface of the blocking protrusion 605, the third protrusion 405 drags the mesh mounting member 600, and the third protrusion 405 and the blocking protrusion 605 play a positioning role for the mesh mounting member 600, as shown in Figure 10. Before step S10, it also includes: rotating the handle 401 until the side surface of the handle 401 is connected to the side surface of the first positioning protrusion 304, at which time the third protrusion 405 of the steel drill 400 is aligned with the opening of the mounting ring 601.

[0116] When the steel bar 400 is pulled out upward, the third protrusion 405 of the steel bar 400 is disengaged from the opening of the mounting ring 601 , thereby achieving the separation of the steel bar 400 from the mesh mounting piece 600 .

[0117] The present invention has a unique structural design for the steel bar and the mesh installation part, which ensures the accuracy of the steel mesh installation position, and can conveniently fix the steel bar on the steel bar installation beam, and the steel bar can be conveniently installed and detached from the mesh installation part. The present invention also optimizes the design of the steel bar installation beam, and the first positioning protrusion and the second positioning protrusion set on the top of the steel bar installation beam can play a positioning role in the installation and detachment of the steel bar on the steel bar installation beam, thereby improving the accuracy of the production process and further improving the production efficiency.

[0118] As a preferred embodiment, step S6 also includes: installing the insulation board positioning piece 140 onto the two steel meshes 700 of the steel mesh group, as shown in Figures 17 and 18; the structure of the insulation board positioning piece 140 is shown in Figures 19 and 20, the insulation board positioning piece 140 includes a mounting buckle 141 and a positioning plate 142 connected to the mounting buckle 141, the mounting buckle 141 is buckled with the steel mesh 700, and the insulation board positioning pieces 140 installed on the two steel meshes 700 of the steel mesh group are relatively arranged; in step S7, the insulation board 110 is installed between the two insulation board positioning pieces 140 along the third direction, and the insulation board 110 is clamped between the positioning plates 142 of the insulation board positioning piece 140.

[0119] An insulation board positioning piece 140 is provided on the steel mesh 700, which can ensure the distance between the steel mesh 700 and the insulation board 110, avoid the position of the insulation board 110 from being offset during the pouring of slurry, and ensure that the insulation board 110 will not be cut or the insulation board 110 will be biased to one side of the board body during the subsequent cutting process.

[0120] The first direction mentioned in the present invention is the length direction of the steel chisel installation beam 300; the second direction is the direction perpendicular to the plane of the circular frame 200, that is, the up and down direction; the third direction is perpendicular to the first direction on the horizontal plane of the circular frame 200, and the first direction, the second direction and the third direction are perpendicular to each other.

[0121] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed by the present invention, or can easily conceive of changes, or make equivalent replacements for some of the technical features therein. Such modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A method for preparing an autoclaved aerated concrete board with a built-in thermal insulation board, characterized in that: The following steps are involved: S1. placing a support frame (100) on the ground; S2, placing the return frame (200) on the support frame (100); S3, fixing the steel drill installation beam (300) on the circular frame (200); the steel drill installation beams (300) are arranged on the circular frame (200) at intervals and parallel to each other, and the steel drill installation beams (300) extend in a first direction; S4, fixing a plurality of steel drills (400) on the steel drill installation beam (300), wherein the steel drills (400) extend in the second direction; The steel drill installation crossbeam (300) is a long rectangular cavity structure, the upper portion of the steel drill installation crossbeam (300) is provided with steel drill placement holes (301) spaced evenly along its length direction and extending vertically therethrough, the lower portion of the steel drill installation crossbeam (300) is provided with a steel drill fastening hole (302) aligned vertically with the steel drill placement hole (301), and the side wall of the steel drill fastening hole (302) is provided with two insertion guide grooves (303) extending vertically therethrough and symmetrically about the center of the steel drill fastening hole (302); A rotary handle (401) is provided at one end of the steel drill (400); a first protrusion (402) and a second protrusion (403) are provided at one end of the steel drill (400) close to the rotary handle (401), and the first protrusion (402) and the second protrusion (403) are arranged along the axial direction of the steel drill (400); a positioning hole (404) penetrating in the radial direction is provided below the second protrusion (403) of the steel drill (400); The distance between the bottom surface of the rotary handle (401) and the top surface of the second protrusion (403) is equal to the height of the steel drill mounting crossbeam (300), and the distance between the bottom surface of the first protrusion (402) and the top surface of the second protrusion is equal to the wall thickness of the steel drill mounting crossbeam (300); The specific process of installing the steel drill (400) to the steel drill installation beam (300) is as follows: the second protrusion (403) of the steel drill (400) first passes through the steel drill placement hole (301), and then passes through the insertion guide groove (303) on the side wall of the steel drill fastening hole (302), and the bottom surface of the rotary handle (401) is connected to the top surface of the steel drill installation beam (300). After the rotary handle (401) is rotated, the top surface of the second protrusion (403) is connected to the bottom surface of the steel drill installation beam (300), and the first protrusion (402) is connected to the bottom surface of the inner cavity of the steel drill installation beam (300), so that the steel drill (400) is fixedly connected to the steel drill installation beam (300); the fastening rod (500) is passed through the positioning hole (404) of the steel drill (400) installed on the same steel drill installation beam (300), and each steel drill (400) is positioned twice; S5, installing the mesh installation member (600) onto the steel drill (400); The mesh installation component (600) comprises a mounting ring (601) with an annular opening, a connecting arm (602) arranged on the outer side wall of the mounting ring (601), and a hanging component (603) arranged at one end of the connecting arm (602) away from the mounting ring (601); the opening spacing of the mounting ring (601) is smaller than the diameter of the steel bar (400); and a steel mesh installation groove (604) is provided on the hanging component (603); the mounting ring (601) is fixedly arranged on the steel bar (400) by elastic matching; The mounting ring (601) is buckled on the middle part of the steel drill (400) and one end away from the rotating handle (401); The hanging parts (603) of any adjacent mesh installation parts (600) are arranged in opposite directions; S6, hanging the prepared steel mesh (700) on the mesh installation component (600), embedding the transverse ribs (701) of the steel mesh (700) into the steel mesh installation groove (604), and extending the steel mesh (700) in the second direction and the third direction; the steel mesh (700) comprises transverse ribs (701) and longitudinal ribs (702), and the transverse ribs (701) and the longitudinal ribs (702) are perpendicularly interlaced to form the steel mesh (700); A plurality of steel drills (400) along the third direction form a steel drill group, and two steel mesh sheets (700) between two adjacent steel drill groups in the first direction form a steel mesh group; A connecting piece (800) is installed between two steel mesh sheets (700) of the steel mesh group, wherein the connecting piece (800) is used to connect the two steel mesh sheets of the steel mesh group and improve the strength of the autoclaved aerated concrete board; Thermal insulation board supports (900) are installed at intervals along the third direction at the bottom ends of the two steel mesh sheets (700) of the steel mesh group; S7, the transmission device is connected to the return frame (200), the return frame (200) together with the steel bar (400) and the steel mesh (700) are hoisted, the return frame (200) is separated from the support frame (100), the insulation board (110) is installed between two steel meshes (700) of the steel mesh group along the third direction, the insulation board (110) is installed in sections in the second direction, and adjacent insulation boards (110) in the second direction are separated by a connecting piece (800); The bottom surface of the insulation board (110) at the bottom end in the second direction is connected to the insulation board supporting member (900), and the top surface of the insulation board (110) at the top end in the second direction is connected to the side wall of the fastening rod (500); S8, injecting the prepared slurry into the mold (120), connecting the return frame (200) with the transmission device, and sending the return frame (200) together with the steel chisel (400), the steel mesh (700) and the insulation board (110) into the mold (120), so that the insulation board supporting member (900) is in contact with the bottom surface of the mold (120); S9, pre-curing to form a green body (130); S10, after the strength of the pre-cured green body (130) reaches a set requirement, the transmission device is connected to the return frame (200), the return frame (200) is lifted, and the return frame (200) drives the steel chisel (400) to be pulled out from the mesh installation member (600), and the steel mesh (700), the connecting member (800), the insulation board supporting member (900) and the insulation board (110) remain in the green body (130); Fill the hole left by pulling out the steel chisel (400) with slurry and perform demoulding; S11, turning over the blank (130) by means of a turning machine, and after turning over, cutting the blank (130) by means of a cutting device, cutting at a central position between two adjacent insulation boards (110), thereby forming a plurality of composite wall panels; S12, placing the cut composite wall panel assembly into a steam curing kettle for autoclave curing; S13, removing the composite wall panel that has been autoclaved and cured from the autoclave to prepare an autoclaved aerated concrete panel having a concrete layer (160) and an insulation board (110).

2. The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board according to claim 1, characterized in that: A first positioning protrusion (304) and a second positioning protrusion (305) are provided at the top of the upper steel drill placement hole (301) of the steel drill installation crossbeam (300) along the circumferential direction; A third protrusion (405) is provided at the middle of the steel drill (400) and at one end away from the rotating handle (401); A blocking protrusion (605) is provided at the bottom of the mounting ring (601) of the mesh mounting piece (600); In S4, during the process of fixing the steel drill (400) to the steel drill installation beam (300), when the side of the rotary handle (401) contacts the side of the first positioning protrusion (304), the second protrusion (403) passes through the insertion guide groove (303); when the rotary handle (401) is rotated until its side contacts the side of the second positioning protrusion (305), the second protrusion (403) rotates away from the insertion guide groove (303), and the top surface of the second protrusion (403) contacts the bottom surface of the steel drill installation beam (300), thereby achieving the steel drill (400) and the steel drill installation beam (300); In S5, after the mesh installation component (600) is installed on the steel drill (400), the third protrusion (405) is connected to the blocking protrusion (605), the top surface of the third protrusion (405) is connected to the bottom surface of the installation ring (601), the side surface of the third protrusion (405) is connected to the side surface of the blocking protrusion (605), and the third protrusion (405) drags the mesh installation component (600); Before S10, it also included: The rotary handle (401) is screwed until the side surface of the rotary handle (401) contacts the side surface of the first positioning protrusion (304), and at this time, the third protrusion (405) of the steel drill (400) is aligned with the opening of the mounting ring (601) in the upper and lower directions.

3. The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board according to claim 2, characterized in that: S6 also includes: installing the insulation board positioning member (140) onto two steel mesh sheets (700) of the steel mesh group; The insulation board positioning piece (140) comprises a mounting buckle (141) and a positioning plate (142) connected to the mounting buckle (141); the mounting buckle (141) is buckledly connected to the steel mesh (700); the insulation board positioning pieces (140) mounted on the two steel meshes (700) of the steel mesh group are arranged opposite to each other; In S7, the thermal insulation board (110) is installed between two thermal insulation board positioning members (140) along the third direction.

4. The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board according to any one of claims 1 to 3, characterized in that: Both ends of the steel drill installation crossbeam (300) are provided with first bolt holes (306) extending therethrough, and the circular frame (200) is provided with second bolt holes (201) arranged at intervals corresponding to the first bolt holes (306). The steel drill installation crossbeam (300) and the circular frame (200) are fixedly connected by fastening bolts (150).

5. The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board according to any one of claims 1 to 3, characterized in that: In S6, the connecting member (800) is an I-shaped steel plate, a C-shaped steel plate or a Z-shaped steel plate extending in a third direction, and the edge end of the I-shaped steel plate, the C-shaped steel plate or the Z-shaped steel plate is connected and fixed to the two steel mesh sheets (700) of the steel mesh group; or, the connecting member (800) is a steel truss, and the two ends of the steel truss are connected and fixed to the two steel mesh sheets (700) of the steel mesh group.

6. The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board according to any one of claims 1 to 3, characterized in that: The insulation board support (900) is a fastening C-shaped ring, and the two ends of the fastening C-shaped ring are connected to two steel mesh sheets (700) of the steel mesh group; or, the insulation board support (900) is a steel plate.

7. The method for preparing the autoclaved aerated concrete board with built-in thermal insulation board according to any one of claims 1 to 3, characterized in that: The insulation board (110) is a high temperature resistant board, specifically a silicon plastic board or rock wool, and the thickness of the insulation board (110) is not less than 90 mm.

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