A cast-in-situ concrete built-in thermal insulation wall structure without cold bridge

Abstract

The application discloses a cold-bridge-free cast-in-situ concrete built-in thermal insulation wall structure and relates to the technical field of building formwork connecting and supporting. The cold-bridge-free cast-in-situ concrete built-in thermal insulation wall structure comprises a steel mesh, further comprises a thermal insulation structure, the thermal insulation structure is arranged between the steel mesh and a cast-in-situ concrete wall, an inner sleeve is arranged in the thermal insulation structure, the inner sleeve can rotate at most one circle in the thermal insulation structure, the rotated inner sleeve is locked in the circumferential direction through buckle connection, and the two ends of the inner sleeve penetrate through the thermal insulation structure and are respectively provided with waterproof caps and heat insulation nut caps. The hollow cross column and the cross column are connected and transmit torque, the fastening bolt is driven to be fastened with the inner threaded sleeve, the cast-in-situ concrete wall is fixed on one side, the heat insulation nut cap is locked, the steel mesh is fixed on the side, and the efficiency bottleneck of frequent operation of a large number of connecting pieces in the traditional process is solved.

Description

Technical Field

[0001] This invention relates to the field of building formwork connection and support technology, specifically to a non-cold bridge cast-in-place concrete built-in insulation wall structure. Background Technology

[0002] In the construction of cast-in-place concrete walls, an integrated cast-in-place insulation system is often used to efficiently improve the thermal insulation performance of the wall. The core of this system is to pre-position and install insulation boards on one side of the wall frame to be poured. To ensure that the insulation boards remain structurally stable and do not deform or crack under the huge pressure of subsequent concrete pouring, and to enhance their integrity, wire mesh is fixedly installed on the side of the insulation board facing the concrete. The wire mesh is firmly anchored to the main body of the insulation board through special connectors to form a stable skeleton. To further enhance the mechanical connection strength and pull-out resistance between the insulation system and the cast-in-place concrete structure, steel bars are typically selected to pass through limiting members, with both ends extending and anchoring into the outer protective layer of the insulation board and the inner concrete structural layer, respectively. Crucially, to minimize the thermal bridge path formed by the metal connectors, low thermal conductivity heat-insulating caps must be installed at the ends of the steel bars exposed on both sides of the insulation layer. These heat-insulating caps effectively prevent heat from being conducted between the insulation layer and the concrete structural layer through the metal members, significantly reducing the thermal bridge effect, ensuring the uniformity of insulation performance, and preventing abnormal local heat loss or accumulation.

[0003] Chinese patent CN216142207U discloses a cast-in-place concrete insulation board system. In this structure, the concrete wall, outer protective layer and insulation board are connected by connectors, and the wall does not need to take additional insulation measures to meet the current building energy conservation standards.

[0004] Chinese patent CN118207973A discloses a cast-in-place concrete insulation board system. This device uses a positioning detection mechanism to ensure that the four steel wires around the mesh of the wire mesh are fully in contact with the corresponding fixing buckles. Only then can the movable buckles on the limiting baffle move towards the fixing buckles and complete the positioning and engagement. If any one of the steel wires around the mesh is not fully in contact with the corresponding fixing buckle, none of the four movable buckles on the limiting baffle can move towards the corresponding fixing buckle. This improves the accuracy of the fixing position of the insulation board and the wire mesh, ensures that the corresponding wire mesh can be effectively fixed, and enhances the firmness of the insulation board and the wire mesh.

[0005] In the thermal insulation wall system, the connectors need to be rigidly anchored to the thermal insulation wall panel and the wire mesh, respectively. That is, the connectors need to be fixed in both directions. However, due to the large area of ​​the thermal insulation wall panel, a large number of limiting parts need to be densely arranged to meet the structural stability requirements. This results in workers having to perform high-frequency and repetitive connector installation and tightening operations, and the cumbersomeness of this process significantly reduces construction efficiency. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a cold-bridge-free cast-in-place concrete built-in insulation wall structure, which solves the problems mentioned in the background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a cold-bridge-free cast-in-place concrete wall structure with built-in insulation, comprising a wire mesh and an insulation structure disposed between the wire mesh and the cast-in-place concrete wall; an inner sleeve disposed within the insulation structure, which can rotate up to one revolution within the insulation structure, and the rotated inner sleeve is circumferentially locked by a snap-fit ​​connection; both ends of the inner sleeve penetrate the insulation structure and are respectively fitted with a waterproof cap and a heat-insulating nut cap; a cross post disposed inside the inner sleeve, which can slide axially along the inner sleeve; a fastening bolt fixed at the end of the cross post near the waterproof cap, the fastening bolt being threadedly connected to the inner wall of the inner sleeve; and a hollow cross post disposed within the heat-insulating nut cap, which can be inserted into the cross post by moving axially along the inner sleeve.

[0008] Furthermore, the fastening bolt is rotatably connected to the waterproof cap, and an internally threaded sleeve is fixed inside the inner sleeve, which is threadedly connected to the fastening bolt.

[0009] Furthermore, the insulation structure is equipped with an outer bushing on one side of the cast-in-place concrete wall. The outer bushing is slidably connected to the inner sleeve. The end of the outer bushing away from the insulation structure is provided with a second meshing tooth. The waterproof cap is sleeved with the inner sleeve, and one end of the waterproof cap is provided with a first meshing tooth that matches the second meshing tooth.

[0010] Furthermore, the insulation structure has an outer sleeve on the side facing the wire mesh, and an inner limiting plate that abuts against the wire mesh is fixed at one end of the outer sleeve; one end of the inner sleeve passes through the outer sleeve and has an external thread on its surface, the external thread being compatible with the heat insulation nut cap, and an outer limiting plate is also provided on the outside of the inner sleeve, the outer limiting plate cooperating with the inner limiting plate to fix the wire mesh.

[0011] Furthermore, the length of the heat-insulating nut cap is greater than the maximum lead of the external thread, and a rotating ring is rotatably connected to one end of the heat-insulating nut cap facing the outer limiting plate.

[0012] Furthermore, the length of the insertion area between the cross post and the hollow cross post is greater than the sum of the maximum lead of the external thread and the fastening bolt, so as to ensure that the cross post can be inserted into the hollow cross post when the heat insulation nut cap contacts the rotating ring.

[0013] Furthermore, a support member is provided between the insulation structure and the wire mesh. The support member is placed within the square area enclosed by the line connecting two adjacent inner sleeves to assist in supporting the wire mesh. The insulation structure is assembled from two symmetrically arranged insulation boards. The opposite surfaces of the two insulation boards have grooves, and a reinforcing mesh is provided inside the gap formed by the two grooves. The reinforcing mesh is fixedly connected to the insulation board on the side away from the cast-in-place concrete wall.

[0014] Furthermore, the snap-fit ​​connection includes a connecting frame fixed on the reinforcing mesh. The connecting frame consists of two parts: a ring sleeved on the outside of the inner sleeve and a side plate on the outside of the ring. The side plate is fixed on the reinforcing mesh. The inner sleeve is provided with a snap head, and the connecting frame is provided with a hook-shaped snap. The inner sleeve is rotated to engage the snap head with the hook-shaped snap, which is used for circumferential positioning of the inner sleeve.

[0015] Furthermore, the outer bushing is provided with a first gasket on the side facing the insulation structure, and the outer sleeve is provided with a second gasket on the side facing the insulation structure.

[0016] Furthermore, the inner and outer limiting discs are provided with grooves on their opposite surfaces, and the grooves are adapted to the wire mesh.

[0017] Furthermore, the support includes a cross guide rail that abuts against the insulation board and a cross support located at the node of the wire mesh. A telescopic rod is provided between the cross support and the cross guide rail, and a first support arm is hinged to the lower surface of the cross support at the end. A sliding hinge seat is slidably connected inside the cross guide rail. A compression spring is provided between the sliding hinge seat and the telescopic rod, and a second support arm is rotatably connected to the sliding hinge seat and hinged to the other end of the corresponding first support arm.

[0018] The present invention has the following beneficial effects:

[0019] (1) The cold-bridge-free cast-in-place concrete built-in insulation wall structure transmits torque through the cross hollow column and cross column insertion, drives the fastening bolt and the internal thread sleeve thread to be fastened, realizes the fixation of one side of the cast-in-place concrete wall, and pushes the heat insulation nut cap and the external thread to lock, realizes the fixation of the wire mesh side, and solves the efficiency bottleneck of frequent operation of a large number of connecting parts in the traditional process.

[0020] (2) The cold-bridge-free cast-in-place concrete built-in insulation wall structure is assembled by two grooved insulation boards to form an insulation structure, and a reinforcing mesh is embedded inside, which significantly improves the overall compressive and deformation resistance, avoids transportation damage, and reduces on-site assembly procedures through factory prefabrication and modularization, thereby reducing construction complexity and time costs.

[0021] (3) The cold-bridge-free cast-in-place concrete built-in insulation wall structure ensures that the rotating ring at the end of the heat insulation nut cap can still rotate freely after reaching the maximum stroke, avoiding locking failure due to overtravel. The length of the cross column and the cross hollow column is greater than the sum of the maximum lead of the thread, ensuring that the torque transmission is not limited by the stroke and improving the stability of torque transmission.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention;

[0024] Figure 2 In this invention Figure 1 Side view;

[0025] Figure 3 This is a schematic diagram of the internal structure of the thermal insulation structure in this invention;

[0026] Figure 4 This is a schematic diagram of the installation structure of the wire mesh in this invention;

[0027] Figure 5 In this invention Figure 4 Side view;

[0028] Figure 6 This is a schematic diagram of the installation structure of the outer limiting plate and the inner limiting plate in this invention;

[0029] Figure 7 In this invention Figure 6 The main view;

[0030] Figure 8 This is an exploded view of the inner sleeve during installation in this invention;

[0031] Figure 9 This is a schematic diagram of the internal structure of the inner sleeve in this invention;

[0032] Figure 10 This is a schematic diagram of the connection structure between the cross-shaped column and the hollow cross-shaped column of the present invention;

[0033] Figure 11 This is a schematic diagram of the connection structure between the card head and the hook-shaped buckle in this invention;

[0034] Figure 12This is a schematic diagram of the support structure in this invention;

[0035] Figure 13 In this invention Figure 12 The main view.

[0036] In the diagram, 1. Insulation structure; 1001. Insulation board; 1002. Groove; 1003. Reinforcing mesh; 1004. Through hole; 2. Wire mesh; 3. Outer limiting plate; 4. Insulation nut cap; 5. Rotating ring; 6. Outer bushing; 7. Waterproof cap; 8. First meshing tooth; 9. Second meshing tooth; 10. First washer; 11. Second washer; 12. Outer sleeve; 13. Inner limiting plate; 14. Inner sleeve; 15. External thread; 16. Connecting bracket; 17. Clamp; 18. Hook-shaped buckle; 19. Fastening bolt; 20. Cross post; 21. Internal threaded sleeve; 22. Hollow cross post; 23. Support component; 2301. Cross guide rail; 2302. Cross support; 2303. Telescopic rod; 2304. Sliding hinge seat; 2305. Second support arm; 2306. First support arm; 2307. Compression spring. Detailed Implementation

[0037] 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.

[0038] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0039] The following is based on Figure 1 - Figure 13 This invention describes a cold-bridge-free cast-in-place concrete built-in insulation wall structure provided by an embodiment of the present invention.

[0040] Please see Figure 1 - Figure 13This invention provides a technical solution: a cold-bridge-free cast-in-place concrete built-in insulation wall structure, including a wire mesh 2 and an insulation structure 1. The insulation structure 1 is disposed between the wire mesh 2 and the cast-in-place concrete wall. The insulation structure 1 is assembled from two symmetrically arranged insulation boards 1001. Grooves 1002 are formed on the opposite surfaces of the two insulation boards 1001. A reinforcing mesh 1003 is provided inside the gap formed by the two grooves 1002. The reinforcing mesh 1003 is fixedly connected to the insulation board 1001 on the side away from the cast-in-place concrete wall. It should be noted that the reinforcing mesh 1003 is preferably injection molded from an engineering plastic material with high mechanical strength and good thermal insulation and heat resistance. It is mainly used to improve the structural strength of the insulation structure 1 itself to prevent damage and deformation during transportation. The grooves 1002... The design allows the outer edge of the reinforcing mesh 1003 to be covered, thereby blocking the thermal bridge path formed by the reinforcing mesh 1003. During use, the insulation structure 1 does not require on-site assembly. It can be modularly assembled at the factory, thus reducing the burden of on-site construction. The inner sleeve 14 is also assembled with the insulation structure 1. The inner sleeve 14 is located inside the insulation structure 1 and can rotate up to one revolution inside the insulation structure 1. After rotation, the inner sleeve 14 is circumferentially locked by a snap-fit ​​connection. Both ends of the inner sleeve 14 penetrate the insulation structure 1 and are respectively equipped with a waterproof cap 7 and a heat insulation nut cap 4. The inner sleeve 14 is detachably connected to the waterproof cap 7 and the heat insulation nut cap 4. Preferably, a horizontal rib is provided on the outside of the waterproof cap 7 to enhance the connection effect between the waterproof cap 7 and other components and the cast-in-place concrete wall.

[0041] To achieve double-end fixation of the insulation structure 1 and the wire mesh 2, the cold-bridge-free cast-in-place concrete built-in insulation wall structure provided in this embodiment also includes a cross post 20. The cross post 20 is made of steel, has high structural strength, and is mainly used for support and connection. The cross post 20 is located inside the inner sleeve 14, and the cross post 20 can slide axially along the inside of the inner sleeve 14. A fastening bolt 19 is fixed to one end of the cross post 20 near the waterproof cap 7. The fastening bolt 19 is threadedly connected to the inner wall of the inner sleeve 14 to achieve end-face fixation of the insulation structure 1, and to achieve fixation of one end of the wire mesh 2. The cold-bridge-free cast-in-place concrete built-in insulation wall structure provided in this embodiment also includes a cross-shaped hollow column 22. The cross-shaped hollow column 22 is also made of steel. The cross-shaped hollow column 22 is located inside the heat insulation nut cap 4, and the cross-shaped hollow column 22 can be inserted into the cross column 20 by moving axially along the inner sleeve 14. The inner sleeve 14, the cross-shaped hollow column 22, and the cross column 20 form a support frame, and the inner sleeve 14 itself is fixed circumferentially and its two ends are fixed, so that the insulation structure 1 and the wire mesh 2 can be fixed by simply rotating the heat insulation nut cap 4.

[0042] like Figure 8 - Figure 10As shown, in order to limit the inner sleeve 14 to the end near the cast-in-place concrete wall, the fastening bolt 19 in this scheme is rotatably connected to the waterproof cap 7. The inner sleeve 14 is fixed with an internal threaded sleeve 21, which is threadedly connected to the fastening bolt 19. By rotating the heat insulation nut cap 4, the cross hollow column 22 can drive the cross column 20 to rotate, which in turn drives the fastening bolt 19 to rotate, thereby making the fastening bolt 19 threadedly connected to the internal threaded sleeve 21.

[0043] like Figure 4 and Figure 5 As shown, in this scheme, to avoid the thermal bridging effect at the connection between the insulation structure 1 and the inner sleeve 14, an outer bushing 6 is installed on the side of the insulation structure 1 located in the cast-in-place concrete wall. The outer bushing 6 blocks the thermal bridging effect at the connection between the insulation structure 1 and the inner sleeve 14, thereby improving the insulation effect. The outer bushing 6 is slidably connected to the inner sleeve 14 so that one end of the inner sleeve 14 can pass through the outer bushing 6. The end of the outer bushing 6 away from the insulation structure 1 is provided with a second meshing tooth 9. The waterproof cap 7 is sleeved with the inner sleeve 14, and one end of the waterproof cap 7 is provided with a first meshing tooth 8 that matches the second meshing tooth 9, thereby reducing the pressure and rotation of the waterproof cap 7 during the concrete pouring process and resisting the rotational force during concrete pouring.

[0044] like Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6 As shown, to fix the wire mesh 2, an outer sleeve 12 is provided on the side of the insulation structure 1 facing the wire mesh 2. One end of the outer sleeve 12 is fixed with an inner limiting plate 13 that abuts against the wire mesh 2. One end of the inner sleeve 14 passes through the outer sleeve 12 and has an external thread 15 on its surface. The external thread 15 is adapted to the heat insulation nut 4. An outer limiting plate 3 is also provided on the outside of the inner sleeve 14. The outer limiting plate 3 and the inner limiting plate 13 cooperate to fix the wire mesh 2. It should be noted that the spiral direction of the external thread 15 is opposite to the spiral direction of the inner thread sleeve 21, so as to ensure that when the cross column 20 rotates, the connection between the external thread 15 and the heat insulation nut 4 and the connection between the inner thread sleeve 21 and the fastening bolt 19 respectively allow the heat insulation nut 4 and the fastening bolt 19 to move towards the insulation structure 1.

[0045] It is important to note that when rotating the heat insulation nut cap 4 during use, the magnitudes of the frictional forces F1 generated by the rotation of the inner sleeve 14, F2 between the external thread 15 and the heat insulation nut cap 4, and F3 between the internal threaded sleeve 21 and the fastening bolt 19 only affect the connection process, not the connection result. Specifically, when F1 > F2 > F3, the internal threaded sleeve 21 and the fastening bolt 19 are tightened first, followed by the external thread 15 and the heat insulation nut cap 4. Finally, after rotating the heat insulation nut cap 4 again, the inner sleeve... After rotating a certain angle, the inner sleeve 14 is locked by a snap-fit ​​connection to fix the insulation structure 1 and the wire mesh 2 at both ends. When F1 < F2 < F3, the inner sleeve 14 will first rotate a certain angle and be locked by a snap-fit ​​connection. Then, the outer thread 15 will be tightened with the heat insulation nut cap 4. Finally, the inner thread sleeve 21 will be tightened with the fastening bolt 19, thus achieving the double-end fixation of the insulation structure 1 and the wire mesh 2. When F2 < F1 < F3, the outer thread 15 will be tightened with the heat insulation nut cap 4 first, followed by the inner sleeve 14 rotating a certain angle and being locked by a snap-fit ​​connection. After rotating a certain angle, the internal threaded sleeve 21 is locked by a snap-fit ​​connection. Finally, the internal threaded sleeve 21 is tightened between the internal threaded sleeve and the fastening bolt 19, thus achieving double-end fixation of the insulation structure 1 and the wire mesh 2. When F2 < F3 < F1, the external thread 15 is tightened first to the heat insulation nut cap 4, followed by the internal threaded sleeve 21 and the fastening bolt 19. Finally, the internal threaded sleeve 14 will rotate a certain angle and be locked by a snap-fit ​​connection to achieve double-end fixation of the insulation structure 1 and the wire mesh 2. When F2 > F1 > F3, the internal threaded sleeve 21 and the fastening bolt... First, tighten the inner sleeve 14 between the inner and outer threads 19. After rotating the heat insulation nut cap 4, the inner sleeve 14 will rotate a certain angle and be locked by the buckle connection. Finally, the outer thread 15 is tightened with the heat insulation nut cap 4, thereby achieving double-end fixation of the insulation structure 1 and the wire mesh 2. When F2 > F3 > F1, the inner sleeve 14 will rotate a certain angle and be locked by the buckle connection. Then, the inner thread sleeve 21 is tightened with the fastening bolt 19. Finally, the outer thread 15 is tightened with the heat insulation nut cap 4, thereby achieving double-end fixation of the insulation structure 1 and the wire mesh 2.

[0046] Therefore, the changes in the magnitudes of the frictional force F1 generated when the inner sleeve 14 rotates, the frictional force F2 between the external thread 15 and the heat insulation nut cap 4, and the frictional force F3 between the internal thread sleeve 21 and the fastening bolt 19 do not affect the limiting effect or the effect is negligible. Regardless of the relationship between the magnitudes of F1, F2, and F3, the system can complete the fastening of each component, and the reliability is not affected by the difference in operation. The advantage of this connection method is that the torque is transmitted through the insertion of the cross hollow column 22 and the cross column 20, which drives the fastening bolt 19 to be threadedly fastened to the internal thread sleeve 21, thereby fixing one side of the cast-in-place concrete wall and pushing the heat insulation nut cap 4 to be locked to the external thread 15, thereby fixing the two sides of the wire mesh.

[0047] like Figure 8 - Figure 10 As shown, the length of the heat insulation nut cap 4 is greater than the maximum lead of the external thread 15 (lead refers to the axial distance advanced by rotating one revolution on the same helix). That is, when the heat insulation nut cap 4 moves to the maximum distance on the external thread 15, the heat insulation nut cap 4 will abut against the outer limit plate 3. The end of the heat insulation nut cap 4 facing the outer limit plate 3 is rotatably connected to the rotating ring 5. By setting the rotating ring 5, the heat insulation nut cap 4 can still rotate after moving to the maximum distance on the external thread 15, avoiding locking failure due to overtravel, so as not to affect the locking of the inner sleeve 14 or the fastening bolt 19.

[0048] like Figure 8 - Figure 10 As shown, the length of the insertion area between the cross post 20 and the hollow cross post 22 in this scheme is greater than the sum of the maximum lead of the external thread 15 and the fastening bolt 19, so as to ensure that when the heat insulation nut cap 4 contacts the rotating ring 5, the cross post 20 can be inserted into the hollow cross post 22, ensuring that the torque transmission is not limited by the stroke, improving the stability of the torque transmission, so that the rotation of the heat insulation nut cap 4 can be stably transmitted to the fastening bolt 19 through the hollow cross post 22 and the cross post 20.

[0049] like Figure 3 , Figure 7 and Figure 11 As shown, the snap-fit ​​connection provided in this embodiment includes a connecting frame 16 fixed on the reinforcing mesh 1003. The connecting frame 16 consists of two parts: a ring sleeved on the outside of the inner sleeve 14 and side plates on the outside of the ring. Preferably, there are four side plates, and the side plates can be telescopic structures. The reinforcing mesh 1003 is provided with an insertion port. One end of the side plate is inserted into the insertion port on the reinforcing mesh 1003, thereby fixing the connecting frame 16. The inner sleeve 14 is provided with a clip 17, and the connecting frame 16 is provided with a hook-shaped buckle 18. The inner sleeve 14 is rotated so that the clip 17 engages with the hook. The hook-shaped buckle 18 engages to limit the circumferential movement of the inner sleeve 14. It should be noted that the opening of the hook-shaped buckle 18 faces the opposite direction of rotation of the heat insulation nut cap 4, so that when the heat insulation nut cap 4 rotates, it drives the inner sleeve 14 to rotate in the same direction, thereby causing the clamp head 17 to engage with the hook-shaped buckle 18. In addition, the opening direction of the hook-shaped buckle 18 has an angle with the connecting frame 16, so that when the clamp head 17 engages with the hook-shaped buckle 18, it can pull the two insulation boards 1001 closer to each other, further enhancing the integrity of the assembled structure and strengthening the structural stability of the insulation structure 1.

[0050] like Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, in this scheme, a through hole 1004 is provided at the connection between the insulation board 1001 and the inner sleeve 14. A first washer 10 is provided on the side of the outer bushing 6 facing the insulation structure 1, and a second washer 11 is provided on the side of the outer sleeve 12 facing the insulation structure 1. Preferably, both the first washer 10 and the second washer 11 are made of rubber. The first washer 10 and the second washer 11 can improve the sealing effect of the through hole 1004 and increase the friction between the outer bushing 6, the outer sleeve 12 and the surface of the insulation structure 1, thus preventing the outer bushing 6 and the outer sleeve 12 from rotating.

[0051] like Figure 4 - Figure 7 As shown, in order to improve the fixing effect of the wire mesh 2, grooves are provided on the opposite surfaces of the inner limiting plate 13 and the outer limiting plate 3. The grooves are adapted to the wire mesh 2. Through the groove cooperation, relative displacement between the wire mesh 2 and the inner limiting plate 13 and the outer limiting plate 3 is avoided, thereby improving the stability of the wire mesh 2 after fixing.

[0052] like Figure 1 , Figure 2 , Figure 12 and Figure 13As shown, to reduce the rigid anchoring structure between the insulation board 1001 and the wire mesh 2 without changing the supporting connection effect of the wire mesh 2, a support member 23 is provided between the insulation structure 1 and the wire mesh 2 in this embodiment. The support member 23 is placed within the square area enclosed by the line connecting two adjacent inner sleeves 14, and is used to assist in supporting the wire mesh 2. The support member 23 includes a cross guide rail 2301 that abuts against the insulation board 1001 and a cross support 2302 located at the node of the wire mesh 2. The surface of the cross guide rail 2301 is provided with an anti-slip pad to prevent displacement of the support member 23 after installation. The cross support 2302 is provided with a rubber pad inside to improve the contact stability between the cross support 2302 and the wire mesh 2. In addition, the cross support 2302 and the wire mesh 2 are connected by a snap-fit ​​connection to facilitate loading and unloading. An extension is provided between the cross support 2302 and the cross guide rail 2301. The telescopic rod 2303 and the lower surface of the cross support 2302 are both hinged to the first support arm 2306 at the port. The cross guide rail 2301 is slidably connected to the sliding hinge seat 2304. A compression spring 2307 is provided between the sliding hinge seat 2304 and the telescopic rod 2303. The sliding hinge seat 2304 is rotatably connected to the second support arm 2305, which is hinged to the other end of the corresponding first support arm 2306. In specific use, the support member 23 is installed between the insulation board 1001 and the wire mesh 2. The elastic force of the compression spring 2307 is released, causing the sliding hinge seat 2304 to move inside the cross guide rail 2301, thereby changing the angle between the first support arm 2306 and the second support arm 2305. This allows the distance between the cross guide rail 2301 and the cross support 2302 to match the distance between the insulation board 1001 and the wire mesh 2, thus supporting the wire mesh 2.

[0053] During use (operation), first, place the outer bushing 6 on the end of the inner sleeve 14 facing the cast-in-place concrete wall, then place the outer sleeve 12 on the other end of the inner sleeve 14, and install the wire mesh 2. Insert the cross post 20 into the inner sleeve 14 through the waterproof cap 7, and insert the hollow cross post 22 into the inner sleeve 14 through the heat insulation nut cap 4, so that the cross post 20 and the hollow cross post 22 are connected. Rotate the heat insulation nut cap 4, and the rotational force of the heat insulation nut cap 4 is transmitted to the fastening bolt 19 through the connection of the cross post 20 and the hollow cross post 22. The frictional force F1 generated when the inner sleeve 14 rotates, the frictional force F2 between the external thread 15 and the heat insulation nut cap 4, and the frictional force F3 between the internal threaded sleeve 21 and the fastening bolt 19 are different, so that the internal threaded sleeve 21 and the fastening bolt 19, and the external thread 15 and the heat insulation bolt 19 are different. After the nut 4 is tightened and the inner sleeve 14 is rotated at a certain angle, it is locked by a snap-fit ​​connection to achieve double-end fixation of the insulation structure 1 and the wire mesh 2. The advantage of this connection method is that the torque is transmitted through the insertion of the hollow cross column 22 and the cross column 20, which drives the fastening bolt 19 to be threaded and tightened with the inner threaded sleeve 21, thereby fixing one side of the cast-in-place concrete wall and pushing the heat insulation nut 4 to lock with the external thread 15, thereby fixing the wire mesh 2 side. In this process, by setting a rotating ring 5 at the end of the heat insulation nut 4, it is ensured that it can still rotate freely after reaching the maximum stroke, avoiding locking failure due to overtravel. The insertion length of the cross column 20 and the hollow cross column 22 is greater than the sum of the maximum lead of the external thread 15 and the fastening bolt 19, ensuring that the torque transmission is not limited by the stroke and improving the stability of torque transmission.

[0054] In addition, the insulation structure 1 is assembled from two insulation boards 1001 with grooves 1002, and a reinforcing mesh 1003 is embedded inside, which significantly improves the overall compressive and deformation resistance and insulation effect of the insulation structure 1, avoids transportation damage, and reduces on-site assembly procedures through factory prefabrication and modularization, thereby reducing construction complexity and time costs.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A non-cold bridge cast-in-place concrete built-in thermal insulation wall structure, comprising a wire mesh (2), characterized in that, Also includes: Thermal insulation structure (1) is located between the wire mesh (2) and the cast-in-place concrete wall; Inner sleeve (14) is located inside the insulation structure (1), and the inner sleeve (14) can rotate up to one revolution inside the insulation structure (1). After rotation, the inner sleeve (14) is circumferentially locked by a snap-fit ​​connection. Both ends of the inner sleeve (14) penetrate the insulation structure (1) and are respectively equipped with a waterproof cap (7) and a heat insulation nut cap (4). A cross post (20) is located inside the inner sleeve (14), and the cross post (20) can slide along the inner axial direction of the inner sleeve (14). A fastening bolt (19) is fixed at one end of the cross post (20) near the waterproof cap (7). The fastening bolt (19) is threaded to the inner wall of the inner sleeve (14). A hollow cross column (22) is located inside the heat insulation nut cap (4), and the hollow cross column (22) can be inserted into the cross column (20) by moving axially along the inner sleeve (14); The insulation structure (1) is provided with an outer sleeve (12) on the side facing the wire mesh (2), and an inner limiting plate (13) that abuts against the wire mesh (2) is fixed at one end of the outer sleeve (12). One end of the inner sleeve (14) passes through the outer sleeve (12) and has an external thread (15) on its surface. The external thread (15) is adapted to the heat insulation nut cap (4). An outer limiting plate (3) is also provided on the outside of the inner sleeve (14). The outer limiting plate (3) and the inner limiting plate (13) cooperate to fix the wire mesh (2).

2. The cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 1, characterized in that: The fastening bolt (19) is rotatably connected to the waterproof cap (7), and the inner sleeve (14) is fixed with an internal threaded sleeve (21), which is threadedly connected to the fastening bolt (19).

3. The cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 2, characterized in that: The insulation structure (1) is installed with an outer bushing (6) on one side of the cast-in-place concrete wall. The outer bushing (6) is slidably connected to the inner sleeve (14). The outer bushing (6) is provided with a second meshing tooth (9) at one end away from the insulation structure (1). The waterproof cap (7) is sleeved with the inner sleeve (14), and one end of the waterproof cap (7) is provided with a first meshing tooth (8) that matches the second meshing tooth (9).

4. The cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 3, characterized in that: The outer bushing (6) is provided with a first gasket (10) on the side facing the insulation structure (1), and the outer sleeve (12) is provided with a second gasket (11) on the side facing the insulation structure (1). The inner limiting plate (13) and the outer limiting plate (3) are provided with grooves on their opposite surfaces, and the grooves are adapted to the wire mesh (2).

5. The cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 4, characterized in that: The length of the heat insulation nut cap (4) is greater than the maximum lead of the external thread (15), and the end of the heat insulation nut cap (4) facing the outer limiting plate (3) is rotatably connected to a rotating ring (5).

6. The cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 5, characterized in that: The length of the insertion area between the cross post (20) and the hollow cross post (22) is greater than the sum of the maximum lead of the external thread (15) and the fastening bolt (19) to ensure that the cross post (20) can be inserted into the hollow cross post (22) when the heat insulation nut cap (4) contacts the rotating ring (5).

7. A cold-bridge-free cast-in-place concrete built-in insulation wall structure according to any one of claims 1-6, characterized in that: A support member (23) is provided between the thermal insulation structure (1) and the wire mesh (2). The support member (23) is placed in the square area enclosed by the line connecting two adjacent inner sleeves (14) to assist in supporting the wire mesh (2). The insulation structure (1) is assembled from two symmetrically arranged insulation boards (1001). The opposite surfaces of the two insulation boards (1001) have grooves (1002). A reinforcing mesh (1003) is provided inside the gap formed by the two grooves (1002). The reinforcing mesh (1003) is fixedly connected to the insulation board (1001) on the side away from the cast-in-place concrete wall.

8. A cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 7, characterized in that: The snap-fit ​​connection includes a connecting frame (16) fixed on the reinforcing mesh (1003). The connecting frame (16) consists of a ring sleeved on the outside of the inner sleeve (14) and a side plate on the outside of the ring. The side plate is fixed on the reinforcing mesh (1003). The inner sleeve (14) is provided with a clamp (17), and the connecting frame (16) is provided with a hook-shaped buckle (18). The inner sleeve (14) is rotated to make the clamp (17) engage with the hook-shaped buckle (18) for circumferential positioning of the inner sleeve (14).

9. A cold-bridge-free cast-in-place concrete built-in insulation wall structure according to claim 8, characterized in that: The support member (23) includes a cross guide rail (2301) that abuts against the insulation board (1001) and a cross support (2302) located at the node of the wire mesh (2). A telescopic rod (2303) is provided between the cross support (2302) and the cross guide rail (2301). A first support arm (2306) is hinged to the lower surface of the cross support (2302) at the port. A sliding hinge seat (2304) is slidably connected inside the cross guide rail (2301). A compression spring (2307) is provided between the sliding hinge seat (2304) and the telescopic rod (2303). A second support arm (2305) is rotatably connected to the sliding hinge seat (2304) and hinged to the other end of the corresponding first support arm (2306).

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