An embedded concrete pouring device and pouring method for external wall insulation

Abstract

This invention discloses a built-in concrete placing device and method for pouring external wall insulation concrete, comprising an angle steel bracket, a guide cover plate, a placing baffle, and a suspension hook. The angle steel bracket includes angle steel one and angle steel two welded together. Angle steel two is vertically arranged, and one side rib of angle steel one is horizontally arranged with its end welded to the outer side of angle steel two. A placing baffle is placed on top of two adjacent angle steel brackets, and a guide cover plate is welded to the bottom front end of angle steel one of two adjacent angle steel brackets. The placing baffle is supported outside the protective layer template, and the guide cover plate is located on top of the insulation layer. A suspension hook is hinged to the front end of angle steel one, and the suspension hook is used to suspend the placing device on the horizontal distribution reinforcement of the external wall. This invention has the characteristics of safety, applicability, advanced technology, and economic rationality. It can save machinery and labor costs to the greatest extent, reduce process time, reduce material waste, and ensure the integrated construction quality of the insulation layer and the external wall structure.

Description

Technical Field

[0001] This invention relates to the field of exterior wall insulation technology for civil buildings, and in particular to a built-in exterior wall insulation concrete pouring and placing device and pouring method. Background Technology

[0002] Building energy conservation is an important part of national energy conservation efforts. The most direct way to reduce building energy consumption is to adopt thermal insulation technology for external wall envelopes, thereby reducing the heat (cooling) load required for building heating and air conditioning and improving energy utilization efficiency. The "Technical Standard for Built-in Insulation Cast-in-place Concrete Composite Shear Walls" (JGJ / T451-2018) issued by the Ministry of Housing and Urban-Rural Development officially came into effect on April 1, 2019. This technical standard has become a recommended industry standard for engineering construction. Compared with other insulation methods, the built-in integrated insulation system has technical advantages such as low overall cost, lifespan comparable to the building, no risk of detachment or flammability, and is increasingly widely used in the field of engineering construction.

[0003] The built-in external wall insulation integrated system refers to the installation of a protective layer with stainless steel welded mesh on the outside of the external wall, with a sandwich panel insulation layer between the protective layer and the wall structure layer. Concrete is poured on both sides of the insulation layer and the 50mm thick protective layer (with anchor bars for connection), forming an external wall insulation system that integrates insulation and external wall structure.

[0004] In the construction of cast-in-place exterior wall concrete, the outer protective layer has a dense wire mesh, and the concrete cross-section is only 50mm. Due to the constraint of coarse aggregate particle size, it is difficult to put the material into the formwork, and conventional ready-mixed concrete cannot be used for pouring. Article 7.4.3 of the "Technical Standard for Cast-in-place Composite Shear Wall with Built-in Insulation" requires that "the concrete of the composite shear wall structural layer and the protective layer should be poured continuously at the same time". Therefore, the exterior wall structural layer and the protective layer generally use self-compacting concrete or ordinary fine stone concrete of the design strength grade.

[0005] Self-compacting concrete is a type of high-performance concrete, requiring good cohesion and fluidity. Its performance requirements for cementitious materials, coarse and fine aggregates, and admixtures are more stringent than those for ordinary concrete. Due to its high price and the difficulty in strictly distinguishing different concrete types for the overall structure of interior and exterior walls, the extensive use of self-compacting concrete would inevitably increase project costs and generate huge material costs, contradicting the "technologically advanced and economically reasonable" advantages advocated by integrated built-in insulation systems. While using self-compacting concrete only for the protective layer and ordinary concrete for the exterior structural layer could significantly reduce material costs, the simultaneous pouring of two different types of concrete would exponentially increase the need for concrete transportation, pouring equipment, and labor, while also lengthening the construction period and increasing machinery and labor costs, thus failing to effectively address its economic rationality.

[0006] Based on on-site construction practice, current technologies for integrated thermal insulation systems tend to use fine aggregate concrete for the simultaneous pouring of the exterior wall structural layer and protective layer, which solves some of the bottleneck problems related to high costs and coarse aggregate particle size. However, due to the excessively narrow 50mm thick protective layer on the outer side of the exterior wall, concrete placement is extremely difficult, easily leading to significant concrete spillage and waste. Furthermore, the extended pouring time results in quality defects such as hollow areas, cold joints, exposed reinforcement, and honeycombing in the exterior wall concrete. The built-in insulation board, lacking necessary protective measures, is highly susceptible to damage, cracking, or displacement under the vertical impact of concrete pouring, severely affecting the structural quality and the insulation effect of the exterior wall, thus violating the original intention of the integrated thermal insulation system: "safety, applicability, and quality assurance." Additionally, to address these quality defects, a thicker crack-resistant mortar leveling layer must be added, which not only makes it difficult to guarantee construction quality but also increases the workload and construction costs.

[0007] Therefore, it is essential to develop an auxiliary material placement tool for pouring concrete for exterior walls with built-in insulation systems, so as to fully leverage the technical advantages of integrated built-in insulation systems while meeting construction specifications. Summary of the Invention

[0008] The purpose of this invention is to provide a built-in external wall insulation concrete pouring and placing device and pouring method to solve the problems existing in the prior art. It has the characteristics of safety, applicability, advanced technology, and economic rationality. It can save machinery and labor costs to the greatest extent, shorten process time, reduce material waste, ensure the integrated construction quality of insulation layer and external wall structure, promote the development of civil building external wall insulation projects towards refinement and specialization, meet the needs of high-quality development and standardized construction of the construction industry, and play a positive role in promoting the technological progress of built-in integrated insulation systems.

[0009] To achieve the above objectives, the present invention provides the following solution: The present invention provides a built-in external wall insulation concrete pouring placing device, including an angle steel bracket, a flow guide plate, a placing baffle, and a suspension hook. The angle steel bracket includes angle steel one and angle steel two welded together. Angle steel two is vertically arranged, and one side rib of angle steel one is horizontally arranged with its end welded to the outer side of angle steel two. The placing baffle is placed on the top of two adjacent angle steel brackets, and the flow guide plate is welded to the bottom front end of angle steel one of two adjacent angle steel brackets. The placing baffle is supported outside the protective layer template, and the flow guide plate is located on the top of the insulation layer. The suspension hook is hinged to the front end of angle steel one, and the suspension hook is used to suspend the placing device on the horizontal distribution reinforcement of the external wall.

[0010] In one embodiment, the length of the other side rib of angle steel one is less than the length of the side welded to angle steel two, and bolt holes are drilled at the end of angle steel one.

[0011] In one embodiment, the fabric baffle is made from a wooden template.

[0012] In one embodiment, the flow guide cover has an inverted V-shaped structure, and the width of the bottom opening of the flow guide cover is equal to the thickness of the insulation board.

[0013] In one embodiment, reinforcing ribs are welded between the two steel plates of the flow guide cover.

[0014] In one embodiment, the suspension hook is made of steel bars, and the suspension hook is bolted to the front end of the angle steel.

[0015] In one embodiment, the bottom end of the side rib of the second angle steel welded to the first angle steel is provided with a U-shaped groove.

[0016] The present invention also provides a method for pouring built-in external wall insulation concrete, including the above-mentioned built-in external wall insulation concrete pouring and placing device, and further including the following steps:

[0017] (1) Binding the external wall reinforcement;

[0018] (2) Numbering and matching

[0019] Before leaving the factory, the layout and segmentation scheme of the built-in insulation panels are determined according to the design dimensions in the drawings, and an installation layout diagram is drawn. Based on the layout diagram, the insulation panels are numbered and classified before leaving the factory to clarify the specific application location.

[0020] (3) Built-in insulation board assembly installation

[0021] After the external wall reinforcement is tied and positioned, the built-in insulation board is installed.

[0022] (4) Install connectors

[0023] The steel reinforcement connectors built into the built-in insulation system are inserted into the positioning chucks on the insulation board to ensure the cross-sectional dimensions of the template and limit the position of the insulation board.

[0024] (5) Install exterior wall formwork

[0025] First, erect the inner formwork of the outer wall. Adjust the position of the base of the formwork according to the formwork control line. The end of the formwork should be accurately positioned according to the end formwork position line and temporarily supported with steel pipes. Then, erect the outer formwork. Drill holes at the position of the tie rods of the formwork, install PVC sleeves and insert the tie rods. Install the double steel pipe main keel from bottom to top. Place the tie rods between the main keels, insert the U-shaped clips and fastening nuts, and lock and fix the wall formwork.

[0026] (6) Install the fabric feeder

[0027] After the external wall formwork is installed and reinforced, the concrete placing device is installed in place as a whole. The U-shaped groove at the bottom of the angle steel bracket is inserted into the external wall tie rod and locked with nuts. The suspension hook of the angle steel bracket is hung on the horizontal distribution bar of the external wall to fix the concrete placing device.

[0028] (7) Exterior wall concrete pouring

[0029] ① Both the outer protective layer and the outer wall structural layer are constructed simultaneously using fine stone concrete, which is transported and poured using a truck-mounted pump and a concrete placing boom.

[0030] ② The guide cover plate connected to the concrete placing device is located above the built-in insulation board. It guides the concrete from the outer wall and the protective layer into the formwork through the triangular cross section; the concrete placing baffle is erected outside the protective layer formwork.

[0031] ③ When pouring concrete, the difference in pouring height between the two sides of the insulation board at any cross section shall not exceed 400mm.

[0032] ④ Vibrate the concrete of the exterior wall structural layer.

[0033] The present invention achieves the following beneficial technical effects compared to the prior art:

[0034] (1) Eliminate the cost constraints of self-compacting concrete

[0035] Both the outer protective layer and the outer wall structural layer are constructed simultaneously using fine stone concrete, which saves machinery, material and labor costs to the greatest extent and ensures the integrity of the integrated composite exterior wall insulation structure.

[0036] (2) Solving the bottleneck of material distribution in narrow working areas

[0037] Concrete is poured into the formwork by a concrete placing device installed on the exterior wall formwork. Concrete spillage and waste are prevented by the concrete placing baffle on the outside of the formwork. This solves the problem of difficulty in pouring concrete into narrow sections, and reasonably shortens the construction cycle, reduces the labor intensity of workers, and reduces material consumption.

[0038] (3) Preventing impact damage to the built-in insulation board

[0039] The guide plate connected to the concrete placing device can prevent the insulation board from being damaged and cracked by the impact of concrete. At the same time, it can increase the concrete placing area and guide the flow of concrete to be poured into the formwork from the outer wall and the protective layer respectively, effectively avoiding mechanical damage to the insulation board and further improving the quality of the external wall insulation project.

[0040] (4) Promote the effective application of integrated built-in insulation systems

[0041] With its safety, applicability, advanced technology, and economic rationality, this invention can be widely applied in the field of engineering construction, promote the development of civil building exterior wall insulation projects towards refinement and specialization, meet the needs of high-quality development and standardized construction in the construction industry, and play a positive role in promoting the technological progress of integrated built-in insulation systems. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a side view of angle steel one;

[0044] Figure 2 This is a three-dimensional view of angle steel one;

[0045] Figure 3 These are two side views of the angle steel.

[0046] Figure 4 This is a three-dimensional view of angle steel two;

[0047] Figure 5 This is a side view of the angle steel bracket;

[0048] Figure 6 This is a three-dimensional view of the angle steel bracket;

[0049] Figure 7 This is a side view of the flow guide cover.

[0050] Figure 8 A three-dimensional view of the flow guide cover;

[0051] Figure 9 This is a schematic diagram of a suspended hook;

[0052] Figure 10 This is a schematic diagram of the fabric feeder assembly.

[0053] Figure 11 Assemble a 3D view of the fabric feeder;

[0054] Figure 12 A schematic diagram of the concrete placement for the exterior wall with an internal insulation system;

[0055] Among them, 1. Angle steel one; 2. Angle steel two; 3. Concrete placing baffle; 4. Hanging hook; 5. Guide cover plate; 6. Concrete placing device; 7. Longitudinal distribution reinforcement of the exterior wall; 8. Tie bar; 9. Horizontal distribution reinforcement of the exterior wall; 10. Built-in insulation board; 11. 50mm thick protective layer; 12. Exterior wall formwork; 13. Square timber secondary keel; 14. Tie rod; 15. Floor support; 16. Lower layer already poured wall; 17. Concrete delivery pump pipe. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] The purpose of this invention is to provide a built-in external wall insulation concrete pouring and placing device and pouring method to solve the problems existing in the prior art. It has the characteristics of safety, applicability, advanced technology, and economic rationality. It can save machinery and labor costs to the greatest extent, shorten process time, reduce material waste, ensure the integrated construction quality of insulation layer and external wall structure, promote the development of civil building external wall insulation projects towards refinement and specialization, meet the needs of high-quality development and standardized construction of the construction industry, and play a positive role in promoting the technological progress of built-in integrated insulation systems.

[0058] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0059] This invention provides a built-in concrete placing device for external wall insulation, including an angle steel bracket, a flow guide plate, a placing baffle, and a suspension hook. The angle steel bracket includes angle steel 1 and angle steel 2 welded together. Angle steel 2 is vertically arranged, and one of the side ribs of angle steel 1 is horizontally arranged with its end welded to the outer side of angle steel 2. A placing baffle 3 is placed on the top of two adjacent angle steel brackets, and a flow guide plate 5 is welded to the bottom front end of angle steel 1 of two adjacent angle steel brackets. The placing baffle 3 is supported outside the protective layer template, and the flow guide plate 5 is located on the top of the insulation layer. A suspension hook 4 is hinged to the front end of angle steel 1, and the suspension hook 4 is used to suspend the placing device 6 on the horizontal distribution reinforcement 9 of the external wall.

[0060] Specifically, the length of the other side rib of angle steel 1 is less than the length of the side welded to angle steel 2, and bolt holes are drilled at the end of angle steel 1; the fabric baffle 3 is made of wooden template; the flow guide plate 5 has an inverted V-shaped structure, and the width of the bottom opening of the flow guide plate 5 is equal to the thickness of the insulation board; reinforcing ribs are welded between the two steel plates of the flow guide plate 5.

[0061] The suspension hook 4 is made of steel bars, and the suspension hook 4 is connected to the front end of angle steel 1 by bolts; the bottom end of the side rib of angle steel 2 that is welded to angle steel 1 is provided with a U-shaped groove.

[0062] Among them, the angle steel bracket is welded together by angle steel 1 and angle steel 2, the flow guide cover 5 is formed by pressing 3mm thick steel plate, the fabric baffle 3 is made using 1000*300mm wooden template, and the suspension hook 4 is made of Φ8 steel bar and is connected to the angle steel bracket by bolts.

[0063] In actual use on site, after the external wall reinforcement is tied, the built-in insulation board is installed, the external wall formwork is erected, and the floor slab casting formwork is set up. The internal support of the built-in insulation system is used to ensure the cross-sectional dimensions of the formwork and limit the position of the insulation board. The concrete placing device 6 is pre-assembled and installed on the external wall formwork 12. The U-shaped groove at the bottom of the angle steel 2 on the angle steel bracket is inserted into the external wall tie rod 14 and locked with a nut. The angle steel 1 is connected to the suspension hook 4 by bolts and is suspended on the external wall horizontal distribution reinforcement 9 using the suspension hook 4 to fix the concrete placing device 6 in place.

[0064] Both the outer protective layer and the outer wall structural layer are constructed simultaneously using fine aggregate concrete, which is transported and poured using a truck-mounted pump and a concrete placing boom. The guide plate 5 connected to the placing boom 6 is located above the built-in insulation board 10, which can prevent the concrete impact from damaging and cracking the insulation board. At the same time, it can increase the concrete placing area and play a guiding and diverting role. The triangular cross section guides the concrete to be poured into the formwork from the outer wall and the protective layer respectively. The placing baffle 3 is erected outside the protective layer formwork to prevent concrete from overflowing and causing spillage and waste.

[0065] During concrete pouring, the height difference between the concrete on both sides of the insulation board at any cross-section must not exceed 400mm to prevent the insulation board from being squeezed and displaced. The exterior wall structural layer concrete is vibrated using a conventional immersion vibrator, while the protective layer concrete is vibrated using... The use of micro vibrators for mechanical compaction, external vibration of the formwork, and manual tamping ensures smooth concrete delivery and a dense structure for the protective layer.

[0066] The steps for making fabric feeder 6 are as follows:

[0067] The material placing device 6 is composed of an angle steel bracket, a flow guide plate 5, a material placing baffle 3, and a suspension hook 4. The angle steel bracket is welded together from angle steel 1 and angle steel 2. The flow guide plate 5 is made of 3mm thick steel plate, the material placing baffle 3 is made using a 1000*300mm wooden template, and the suspension hook 4 is made of Φ8 steel bars and bolted to the angle steel bracket. The specific dimensions and manufacturing methods of each component are as follows:

[0068] (1) Fabrication of angle steel brackets

[0069] ① Making angle steel - 1

[0070] Use 40*40*4mm angle steel, 300mm long, cut at a 45° angle at the center of the upper edge of the side rib, and drill out the other end. For detailed fabrication drawings of bolt holes and angle steel 1, please refer to [the original text]. Figure 1 See the 3D schematic diagram. Figure 2 .

[0071] ② Making angle steel 2

[0072] Using 50*50*5mm angle steel, with a length of 650mm, one end is cut at a 45° bevel and welded to the edge ribs with 50*50*3mm steel plate. A 50*14mm U-shaped groove is cut into the edge ribs at the other end. See the detailed drawing for the fabrication of angle steel 2. Figure 3 See the 3D schematic diagram. Figure 4 .

[0073] ③ Assemble and weld angle steel brackets

[0074] Weld angle steel 1 and angle steel 2 at right angles according to the dimensions shown in the diagram, using double-sided fillet welds to ensure a full and strong weld. See the detailed diagram of the angle steel support structure. Figure 5 See the 3D schematic diagram. Figure 6 .

[0075] (2) Fabrication of the flow guide cover 5

[0076] The flow guide cover 5 is made of 3mm thick steel plate, pressed into shape, with an A-shaped cross section, 1000mm long and 80mm high. The width of the bottom surface is the thickness of the insulation board, and the lower opening utilizes... The reinforcing bars are spot-welded to ensure the cover plate is firm and does not deform. See the detailed fabrication drawing for guide cover plate 5. Figure 7 See the 3D schematic diagram. Figure 8 .

[0077] (3) Make a fabric baffle 3

[0078] Fabric baffle 3 is made by cutting from a wooden template and measures 1000*300mm.

[0079] (4) Make suspension hooks 4

[0080] Suspension hook 4 utilization The reinforcing bar is bent into shape, with a length of 300mm, and a 30*30*4mm steel plate is welded to the end. The steel plate is drilled out from the center. See the schematic diagram for bolt holes and hanging hook 4. Figure 9 .

[0081] (5) Fabric feeder 6 assembly

[0082] Prepare two sets of angle steel brackets. Weld the angle steel brackets to the guide cover plate 5 according to the dimensions shown in the figure. The outer edge of the angle steel brackets is flush with the end of the guide cover plate 5. Insert the fabric baffle 3 between the beveled ribs of angle steel 1 and angle steel 2 of the angle steel brackets, and fix it to angle steel 2 with rivets. The suspension hook 4 is connected to angle steel 1 with M12 bolts. The whole assembly is the fabric feeder 6. See the assembly drawing for details. Figure 10 See the 3D schematic diagram. Figure 11 .

[0083] The operational steps for pouring external wall insulation concrete using the aforementioned built-in external wall insulation concrete pouring and placing device are as follows:

[0084] (1) Tying the external wall reinforcement

[0085] Clear debris from the base layer. Based on the design drawings, mark out detailed dimensions such as floor axes, wall edges and control lines, and door and window opening positions. Measure the +500mm horizontal elevation control point on the vertical reinforcement of the walls and columns. Correct the position of the lower layer joint longitudinal reinforcement. First, tie the hidden column reinforcement, then install the vertical and horizontal ladder reinforcement, and then tie the wall distribution reinforcement. The first horizontal reinforcement should be 50mm from the bottom slab. Then, install the horizontal reinforcement according to the spacing of the vertical ladder reinforcement. All reinforcement intersections should be tied point by point using 20# binding wire in a figure-eight knot. After that, tie the beam reinforcement. The length of the beam longitudinal reinforcement anchored into the hidden columns on both sides of the opening should meet the design anchorage requirements. Double F-clip reinforcement is used between the double rows of wall reinforcement to control displacement and fix the skeleton spacing of the double rows of reinforcement. The reinforcement is distributed in the upper, middle, and lower parts of the wall. Reinforcement protective layer spacers are set on the outside of the horizontal reinforcement in a quincunx pattern with a spacing of 600mm.

[0086] (2) Numbering and matching

[0087] Before leaving the factory, the layout and segmentation scheme of the built-in insulation boards should be determined according to the design dimensions in the drawings, and an installation layout diagram should be drawn. To reduce construction difficulty and material waste, and to minimize cracking at the joints, the main specification dimensions should be used as much as possible. The height of the insulation board should be the floor height minus the floor board thickness. Vertical splicing should be avoided, and cutting on the construction site is strictly prohibited. According to the layout diagram, the insulation boards should be numbered and classified before leaving the factory, clearly indicating their specific application areas.

[0088] When transporting insulation boards, handle them with care. Do not throw, drop, or step on them during loading and unloading. The storage area for insulation boards should be flat, compacted, or hardened. Take measures to ensure drainage, rain protection, and sun protection. Store them in categories, flat, and stacked. Do not store them in the open air. The storage area should be located within the working range of hoisting equipment.

[0089] (3) Built-in insulation board assembly installation

[0090] After the external wall reinforcement is tied and positioned, the built-in insulation boards are installed. The insulation boards are transported vertically using a tower crane. Protective measures are taken around the boards using templates or timber. The hoisting ropes should be securely fixed to prevent them from falling from the air. Hoisting is prohibited when the wind force exceeds level 5. The insulation boards are installed sequentially according to the design layout, starting with the corners and proceeding from one side to the other. After installation, they are temporarily fixed with manual assistance. A concrete cantilever slab is set on the lower floor, extending to 4 / 5 of the protective layer thickness, as a support for the insulation board installation. Holes are drilled at the positions of the tie bolts on the template corresponding to the insulation boards, and bolts are inserted. The joints at the corners of the insulation boards are ensured to be tight. The wire mesh is connected to the external wall reinforcement with tie wire to enhance stability. The wire mesh at the joints of the insulation boards is also tied together. After the insulation boards are installed, reinforcement protective layer spacers are installed on the wire mesh in a quincunx pattern with a spacing of 600mm.

[0091] (4) Install connectors

[0092] The Φ8 steel bar connectors of the built-in insulation system are inserted into the positioning chucks on the insulation board to ensure the cross-sectional dimensions of the template and limit the position of the insulation board. There should be no less than 8 connectors per square meter. The steel bar connectors that pass through the insulation board are covered with engineering plastic hot melt coating. The connectors are arranged in a matrix. Additional connectors can be added at door and window openings as appropriate.

[0093] (5) Install exterior wall formwork

[0094] First, erect the inner formwork of the exterior wall. Adjust the position of the base of the formwork according to the formwork control line, and accurately position the end of the formwork according to the end formwork position line and temporarily support it with steel pipes. Then, erect the outer formwork, drill holes at the position of the tie rods of the formwork, install PVC sleeves and insert the tie rods, install the double steel pipe main keel from bottom to top, place the tie rods between the main keels, insert the U-shaped clips and fastening nuts, and lock and fix the wall formwork.

[0095] The template should be assembled tightly. Mortar should be laid at the bottom of the template to prevent grout leakage during concrete pouring. The through bolt holes on the template should be drilled from the indoor side to the outside using a special hand drill. A cleaning opening should be left at the bottom of the template. After the template is fixed, the insulation board fragments inside the template should be cleaned and the cleaning opening should be sealed.

[0096] (6) Install the fabric feeder

[0097] After the exterior wall formwork 12 is installed and reinforced, the concrete placing device 6 is installed in place. The U-shaped groove at the bottom of the angle steel 2 of the angle steel bracket is inserted into the exterior wall tie rod 14 and locked with M12 nuts; the suspension hook 4 of the angle steel bracket is hung on the horizontal distribution reinforcement 9 of the exterior wall to fix the concrete placing device 6.

[0098] (7) Exterior wall concrete pouring

[0099] ① Both the outer protective layer and the outer wall structural layer are constructed simultaneously using fine aggregate concrete, which is transported and poured using a truck-mounted pump and a concrete placing boom.

[0100] ② The guide cover plate 5 connected to the concrete placing device 6 is located above the built-in insulation board 10. It can prevent the concrete impact force from causing damage and cracking to the insulation board. At the same time, it can increase the concrete placing area and play a guiding and diverting role. The triangular cross section guides the concrete to be poured into the formwork from the outer wall and the protective layer respectively. The placing baffle 3 is erected outside the protective layer formwork to prevent concrete from overflowing and causing spillage and waste.

[0101] ③ During concrete pouring, the height difference between the two sides of the insulation board at any cross section shall not exceed 400mm to prevent the insulation board from being squeezed and displaced.

[0102] ④ The concrete of the external wall structural layer is vibrated using a conventional immersion vibrator, and the concrete of the protective layer is vibrated using... Micro-vibrators, supplementary vibration outside the formwork, and manual tamping are used to ensure smooth concrete placement and a dense structure in the protective layer. During concrete vibration, it is strictly forbidden to let the vibrator directly touch the insulation board to avoid damage. A schematic diagram of the concrete placement for the built-in insulation system on the exterior wall is shown below. Figure 12 .

[0103] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0104] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A built-in concrete pouring and placing device for external wall insulation, characterized in that: The system includes angle steel brackets, flow guide plates, material distribution baffles, and suspension hooks. The angle steel brackets consist of angle steel one and angle steel two welded together. Angle steel two is vertically arranged, and one side rib of angle steel one is horizontally arranged with its end welded to the outer side of angle steel two. The material distribution baffles are placed on top of two adjacent angle steel brackets, and the flow guide plates are welded to the bottom front end of angle steel one of two adjacent angle steel brackets. The material distribution baffles are supported outside the protective layer template, and the flow guide plates are located on top of the insulation layer. The suspension hooks are hinged to the front end of angle steel one and are used to suspend the material distributor on the horizontal distribution reinforcement bars of the outer wall. The flow guide cover has an inverted V-shaped structure, and the width of the bottom opening of the flow guide cover is equal to the thickness of the insulation board; the suspension hook is made of steel bars, and the suspension hook is connected to the front end of angle steel one by bolts; the bottom end of the side rib of angle steel two welded to angle steel one has a U-shaped groove. The concrete placing device is pre-assembled and installed as a whole on the exterior wall formwork. The U-shaped groove at the bottom of angle steel 2 is inserted into the tie rod of the exterior wall and locked with a nut. Angle steel 1 is connected to the suspension hook by bolts and is suspended on the horizontal distribution reinforcement of the exterior wall using the suspension hook to fix the concrete placing device in place. The outer protective layer and the exterior wall structural layer are both constructed with fine stone concrete simultaneously. The guide cover plate connected to the concrete placing device is located above the built-in insulation board, which can prevent the concrete impact from causing damage and cracking to the insulation board. At the same time, it can increase the concrete placing area and play a guiding and diverting role. The triangular cross section guides the concrete to be poured into the formwork from the exterior wall and the protective layer respectively. The concrete baffle is erected outside the protective layer formwork to prevent concrete from overflowing and causing spillage and waste.

2. The built-in external wall insulation concrete pouring and placing device according to claim 1, characterized in that: The length of the other side rib of angle steel one is less than the length of the side welded to angle steel two, and bolt holes are drilled at the end of angle steel one.

3. The built-in external wall insulation concrete pouring and placing device according to claim 1, characterized in that: The fabric baffle is made of wooden templates.

4. The built-in external wall insulation concrete pouring and placing device according to claim 1, characterized in that: The guide cover has reinforcing ribs welded between the two steel plates.

5. A method for pouring concrete for built-in external wall insulation, characterized in that, The built-in external wall insulation concrete pouring and placing device according to any one of claims 1-4 further includes the following steps: (1) Binding the external wall reinforcement; (2) Numbering and matching Before leaving the factory, the layout and segmentation scheme of the built-in insulation panels are determined according to the design dimensions in the drawings, and an installation layout diagram is drawn. Based on the layout diagram, the insulation panels are numbered and classified before leaving the factory to clarify the specific application location. (3) Installation of built-in insulation panels After the external wall reinforcement is tied and positioned, the built-in insulation board is installed. (4) Install connectors The steel reinforcement connectors built into the built-in insulation system are inserted into the positioning chucks on the insulation board to ensure the cross-sectional dimensions of the template and limit the position of the insulation board. (5) Install exterior wall formwork First, erect the inner formwork of the outer wall. Adjust the position of the base of the formwork according to the formwork control line. The end of the formwork should be accurately positioned according to the end formwork position line and temporarily supported with steel pipes. Then, erect the outer formwork. Drill holes at the position of the tie rods of the formwork, install PVC sleeves and insert the tie rods. Install the double steel pipe main keel from bottom to top. Place the tie rods between the main keels, insert the U-shaped clips and fastening nuts, and lock and fix the wall formwork. (6) Install the fabric feeder After the external wall formwork is installed and reinforced, the concrete placing device is installed in place as a whole. The U-shaped groove at the bottom of the angle steel bracket is inserted into the external wall tie rod and locked with nuts. The suspension hook of the angle steel bracket is hung on the horizontal distribution bar of the external wall to fix the concrete placing device. (7) External wall concrete pouring ① Both the outer protective layer and the outer wall structural layer are constructed simultaneously using fine stone concrete, which is transported and poured using a truck-mounted pump and a concrete placing boom. ② The guide cover plate connected to the concrete placing device is located above the built-in insulation board. It guides the concrete from the outer wall and the protective layer into the formwork through the triangular cross section; the concrete placing baffle is erected outside the protective layer formwork. ③ When pouring concrete, the difference in pouring height between the two sides of the insulation board at any cross section shall not exceed 400mm. ④ Vibrate the concrete of the exterior wall structural layer.

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