Prefabricated building post-poured concrete part dismantling-free self-reinforcing device and using method

Abstract

The application is obtained by the inventor's practice and summary, and is used for solving the complex reinforcing system of the outer wall post-poured part, eliminating the safety hidden danger of free space and the water seepage hidden danger of the pull bolt hole, and the scheme is as follows: including a removable formwork and a prefabricated component, a reinforcing female head is installed on the removable formwork, a reinforcing male head matched with the reinforcing female head is installed on the prefabricated component, and a plurality of reinforcing assemblies suitable for connecting post-poured concrete steel bars are installed on one side of the removable formwork for pouring concrete. The reinforcing assembly can be fixed with the post-poured concrete steel bar to ensure the connecting strength of the removable formwork and the steel bar, the reinforcing female head and the reinforcing male head can form a connecting structure between the two prefabricated wall bodies, thereby ensuring the structural strength of the removable formwork in all directions, eliminating the water seepage hidden danger of the pull bolt hole, and only the outer side removable formwork needs to be installed on the inner side of the outer wall, thereby eliminating the safety hidden danger of the previous free space operation.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building exterior wall construction, specifically to a self-reinforcing device and its usage method for post-cast concrete sections in prefabricated buildings that does not require dismantling. Background Technology

[0002] Prefabricated buildings refer to buildings where a large amount of on-site work in traditional construction methods is transferred to factories. Building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in factories, transported to the construction site, and assembled and installed on-site using reliable connection methods.

[0003] Prefabricated buildings mainly include precast concrete structures, steel structures, and modern wood structures. Because they adopt standardized design, factory production, assembly construction, information management, and intelligent applications, they represent modern industrialized production methods.

[0004] After prefabricated buildings are hoisted into place, the post-concrete sections require reinforcement with steel bars, formwork reinforcement, and concrete pouring. During this period, manual formwork installation and reinforcement with tie rods are necessary. For the exposed side of the exterior wall, the traditional formwork reinforcement method is required, which necessitates prolonged work at height, posing a safety hazard. Furthermore, tie rod holes will be left in the exterior wall, requiring later sealing and creating a risk of water seepage. Summary of the Invention

[0005] The problem solved by this invention is: how to solve the complex reinforcement system of the post-cast part of the exterior wall, and eliminate the safety hazards of the air-facing part and the water seepage hazards of the tie bolt holes.

[0006] Through the inventor's practice and summarization, a solution for a self-reinforcing device for the post-cast concrete section of prefabricated buildings without dismantling was developed to solve this problem. The solution is as follows: it includes a self-reinforcing template and precast components. A reinforcing female head is installed on the self-reinforcing template, and a reinforcing male head compatible with the reinforcing female head is installed on the precast component. Several reinforcing components suitable for connecting the reinforcing bars of the post-cast concrete are installed on one side of the self-reinforcing template where concrete is poured. Each reinforcing component includes a connector fixedly installed on the self-reinforcing template. The overall cross-section of the connector is C-shaped. A one-way locking body is rotatably installed on one side of the connector's opening. A flexible anti-slip structure relative to the one-way locking body is provided inside the connector. The stop body is provided with a guide groove, and a return spring and a slider are installed in the guide groove. The slider is installed on the connecting body through a rotating shaft, and a torsion spring is installed at the rotation node of the slider. The connecting body is provided with a clearance groove and a locking component. The post-cast concrete reinforcement is suitable for squeezing the one-way locking body into the interior of the connecting body and squeezing the flexible anti-slip structure. The one-way locking body is gradually rotated along the outer circumference of the post-cast concrete reinforcement under pressure. The return spring is suitable for the one-way locking body to reset along the outer circumference of the post-cast concrete reinforcement after it enters the connecting body. The clearance groove is suitable for the post-cast concrete reinforcement to be able to completely pass through the one-way locking body after it enters the connecting body. The locking component is suitable for limiting the outward turning angle after the one-way locking body resets.

[0007] Compared to existing technologies, the use of reinforcement components can ensure the connection strength between the formwork and the reinforcing steel in the post-cast concrete. At the same time, the reinforcement female and male heads can also form a connection structure between the precast components on both sides, thereby ensuring the structural strength of the formwork in all aspects, eliminating the risk of water seepage in the tie bolt holes, and the external formwork can be installed only on the inside of the exterior wall, eliminating the safety hazards of previous high-altitude operations.

[0008] Based on the above solution, the following improvements are made: both the reinforced male and female heads are provided with T-shaped connecting grooves, and the reinforced male and female heads are connected by connectors and pull on each other to form a matching structure corresponding to the T-shaped connecting grooves.

[0009] Based on the above scheme, the following improvements are made: the connector includes a connecting piece 1 and a connecting piece 2. Two connecting pieces 1 are arranged in front and behind, and two connecting pieces 2 are arranged in the left and right. Connecting pieces 3 are connected to both ends of the connecting piece 1. The two connecting pieces 3 are used to connect the corresponding connecting pieces 1 and connecting pieces 2. An anti-torsion component is connected between the two connecting pieces 2.

[0010] Based on the above scheme, the following improvements are made: the anti-torsion component includes a cylinder and anti-torsion plates symmetrically distributed on both sides of the cylinder.

[0011] Based on the above solution, the following improvements are made: the interior of the T-shaped connecting groove is provided with a guide part and a sealing part.

[0012] Based on the above solution, the following improvement is made: the distance between the two guide parts gradually decreases along the direction of the pressure application part towards the sealing part.

[0013] Based on the above solution, the following improvement is made: the second connecting piece bends inward by at least 180° under working conditions.

[0014] Compared to existing technologies, this method utilizes two connecting pieces (one), two connecting pieces (two), and four connecting pieces (three) to connect the T-shaped connecting grooves on the reinforcing male and female connectors. After connection, the mutual pulling action of the connecting pieces (two) forces the reinforcing male and female connectors to form a double and large-area seal at this point. This large-area seal is achieved through the contact and adhesion of most of the surface between the connecting pieces (three) and the sealing part. The purpose of using this structure is that, due to the distance between the reinforcing component and the adjacent precast component, mortar leakage is very likely to occur at this point under pressure after concrete pouring. If waterproof sealant is directly applied between the formwork, it will only be applied to the side or end. Applying it to the side will result in a stepped structure on the wall surface between the formwork and the precast component, which is not conducive to subsequent wall painting. Applying it to the end will result in a small seal thickness, and the waterproof sealant is prone to migration and failure under pressure.

[0015] Based on the above solution, the following improvements are made: a pressure-applying component is also installed between the reinforced male and reinforced female connectors. A guide structure and a locking structure are provided on the opposite side of the reinforced male and reinforced female connectors. The pressure-applying component enters between the reinforced male and reinforced female connectors through the guide structure and acts on the connecting piece two from the outside to the inside, and then is locked in the opposite direction by the locking structure.

[0016] Based on the above scheme, the following improvements are made: the side of the pressure-applying component facing away from the connecting piece two is provided with a locking ramp that is compatible with the locking structure.

[0017] Compared to existing technologies, the reverse locking of the aforementioned pressure-applying component can reverse lock the reinforced male and female heads via a locking ramp and locking structure. Adding a reverse locking structure between the reinforced male and female heads ensures the structural stability and reliability at that point, preventing micro-cracks from appearing due to the impact of the post-poured concrete and the pressure of the concrete near that point. At the same time, the reverse pressure locking of the connecting piece two can add two additional waterproof sealing structures: the matching point of the locking ramp and locking structure on the pressure-applying component, and the conical structure formed by the two locking structures.

[0018] The operating steps for using the self-reinforcing device for post-cast concrete sections in prefabricated buildings without the need for dismantling are as follows:

[0019] First, grooves are cut and cleaned on the side end of the precast component near the post-cast concrete part. Waterproof adhesive is applied to the back of the reinforcing male and the reinforcing male is installed in the groove using anchor bolts. The main bars and stirrups of the post-cast concrete are installed in accordance with specifications. Several sets of reinforcing components are installed on the back of the formwork that can be removed.

[0020] Secondly, the reinforced male and reinforced female are connected by a connector. The operator brings the connecting pieces 3 at both ends of the connecting piece 1 close to each other until they meet the opening width of the T-shaped connecting groove. At this time, the bending angle of the connecting piece 1 increases and the bending angle of the connecting piece 2 decreases. After the connecting pieces 1 and 3 enter the interior of the T-shaped connecting groove, the connecting piece 3 will enter along the inner wall of the T-shaped connecting groove. The two ends of the connecting piece 1 will move outward to reset the angle along the depth of the T-shaped connecting groove and abut the connecting pieces 3 at both ends against the corresponding guide parts.

[0021] Furthermore, as the gap between the reinforcing male and female heads decreases, the bending angle of the second connecting piece will gradually recover, and both sides of the pressure-applying component will contact the guide structure. As the gap continues to decrease, the pressure-applying component will change the stable linear state of the anti-torsion plate to a stable bending state along the guide structure. The two ends of the second connecting piece will retract inward, causing the bending angle to increase significantly to more than 180°, and driving the third connecting piece to adhere to the sealing part. At the same time, the first connecting piece will further increase the bending angle and squeeze one end of the third connecting piece outward.

[0022] During the above step, the following actions occur simultaneously: the stirrups of the post-cast concrete reinforcement move from the opening of the connector into the connector and squeeze the one-way locking body. The one-way locking body will rotate, forcing the slider to move upward relative to the guide groove while rotating, and squeezing the return spring. The rotation process of the one-way locking body is that it rotates along the outer circumference of the stirrup under the action of the return spring and the torsion spring. After the stirrup is completely inside the connector, the torsion spring at the slider rotation node will rotate the one-way locking body in the opposite direction, and at the same time, the return spring will reset the one-way locking body, and finally form a fixed connection with the corresponding stirrup.

[0023] Finally, concrete is poured between the two formwork panels that do not need to be removed.

[0024] Compared to existing technologies, this method involves installing the reinforcing male connector on the end of the precast component near the post-cast concrete, using waterproof sealant and anchor bolts for fixing and sealing. The reinforcing components and stirrups are assembled from the inside of the precast component with a non-removable formwork suspended from the outside of the wall. Connectors can also be used to seal the reinforcing male and female connectors, eliminating the safety hazards associated with prolonged work at height. This method also eliminates the problem of water seepage in tie bolt holes, and the double large-area sealing structure of the connectors at the connection between the non-removable formwork and the precast component eliminates leakage. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the overall structure of the reinforcement component of the present invention;

[0027] Figure 3 This is an initial state diagram of the reinforcing components and stirrups of the present invention before connection;

[0028] Figure 4 This is a diagram showing the connection state of the reinforcing components and stirrups of the present invention;

[0029] Figure 5 This is a diagram showing the connection state (fixed connection) between the reinforcing component and the stirrup of the present invention;

[0030] Figure 6 This is a connection diagram of the reinforced male connector and the reinforced female connector in one embodiment of the present invention;

[0031] Figure 7 This is a diagram showing the initial connection relationship between the reinforced male connector and the reinforced female connector in one embodiment of the present invention;

[0032] Figure 8 This is a diagram showing the connection relationship of the connector entering the T-shaped connecting groove in one embodiment of the present invention;

[0033] Figure 9 This is a connection diagram of the reinforced male connector and the reinforced female connector in one embodiment of the present invention;

[0034] Figure 10 This describes the connection relationship of the connector entering the T-shaped connecting groove in one embodiment of the present invention.

[0035] Figure 11 This is an exploded top view of a precast wall structure that requires no dismantling of formwork and reinforcing steel.

[0036] In the picture:

[0037] 10. No need to disassemble the formwork; 11. Reinforced female connector;

[0038] 20. Precast components; 21. Reinforced male connectors;

[0039] 30. Reinforcing component; 31. Connector; 311. Clearance groove; 312. Locking element; 32. One-way locking body; 33. Guide groove one; 34. Return spring; 35. Slider; 36. Torsion spring; 40. T-shaped connecting groove; 41. Guide part; 42. Sealing part; 50. Connector; 51. Connecting piece one; 52. Connecting piece two; 53. Connecting piece three; 54. Anti-torsion component; 541. Cylinder; 542. Anti-torsion plate; 60. Pressure application component;

[0040] 70. Guiding structure;

[0041] 80. Locking structure. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0044] Example 1, such as Figures 1 to 5 , Figure 11 As shown, the self-reinforcing device for the post-cast concrete section of a prefabricated building includes a self-reinforcing template 10 and precast components 20. A reinforcing female head 11 is installed on the self-reinforcing template 10, and a reinforcing male head 21 adapted to the reinforcing female head 11 is installed on the precast component 20. Several reinforcing components 30 suitable for connecting the reinforcing bars of the post-cast concrete are installed on one side of the self-reinforcing template 10 where concrete is poured. Each reinforcing component 30 includes a connector 31 fixedly installed on the self-reinforcing template 10. The connector 31 has a C-shaped cross-section. A one-way locking body 32 is rotatably installed on one side of the opening of the connector 31. A flexible anti-slip structure relative to the one-way locking body 32 is provided inside the connector 31. A guide groove 33 is provided on the one-way locking body 32. A return spring 34 and a slider 35 are installed. The slider 35 is mounted on the connecting body 31 via a rotating shaft, and a torsion spring 36 is installed at the rotation node of the slider 35. The connecting body 31 is provided with a clearance groove 311 and a locking member 312. The post-cast concrete reinforcement is suitable for squeezing the one-way locking body 32 into the connecting body 31 and squeezing the flexible anti-slip structure. The one-way locking body 32 is compressed and rotates gradually along the outer circumference of the post-cast concrete reinforcement. The return spring 34 is suitable for the one-way locking body 32 to reset along the outer circumference of the post-cast concrete reinforcement after it enters the connecting body 31. The clearance groove 311 is suitable for the post-cast concrete reinforcement to be able to completely pass through the one-way locking body 32 after it enters the connecting body 31. The locking member 312 is suitable for limiting the outward turning angle after the one-way locking body 32 resets.

[0045] After the reinforcement bars of the post-cast concrete are tied according to specifications, the formwork 10 is hoisted and installed, causing the stirrups of the post-cast concrete reinforcement bars to move from the opening of the connector 31 into the connector 31 and press against the one-way locking body 32. The one-way locking body 32 will rotate, forcing the slider 35 to move upward relative to the guide groove 33 while rotating, and pressing against the return spring 34. The rotation process of the one-way locking body 32 is that it rotates along the outer circumference of the stirrup under the action of the return spring 34 and the torsion spring 36. After the stirrup is completely inserted into the connector 31, the torsion spring 36 at the rotation node of the slider 35 will rotate the one-way locking body 32 in the opposite direction, and at the same time, the return spring 34 will reset the one-way locking body 32, and finally form a fixed connection with the corresponding stirrup. When installing the outer formwork, after hoisting the formwork 10 to the set height, move the formwork 10 horizontally from the inside of the outer wall so that the stirrups of the post-cast concrete reinforcement can be inserted into the connector 31 and fixed under the action of the one-way locking body 32. This eliminates the safety risk of long-term high-altitude operation required in the past when reinforcing the formwork. The reinforcement component 30 can fix the formwork 10 and the stirrups without removing them, ensuring the stability and reliability of the formwork 10 when pouring concrete.

[0046] As another embodiment of the present invention, based on the above embodiments: as Figures 6 to 8 As shown, T-shaped connecting grooves 40 are provided on both the reinforced male connector 21 and the reinforced female connector 11. The interior of the T-shaped connecting groove 40 is provided with a guide part 41 and a sealing part 42. The distance between the two guide parts 41 gradually decreases along the direction of the pressure part close to the sealing part 42. The reinforced male connector 21 and the reinforced female connector 11 are connected by the connector 50 and pull each other to form a matching structure corresponding to the T-shaped connecting grooves 40.

[0047] Wherein: the connector 50 includes a first connector 51 and a second connector 52. Two first connectors 51 are arranged at the front and back, and two second connectors 52 are arranged at the left and right. The two ends of the first connector 51 are respectively connected to the third connector 53. The two third connectors 53 are used to connect the corresponding first connector 51 and second connector 52. The two second connectors 52 are connected to the anti-torsion member 54. The anti-torsion member 54 includes a cylinder 541 and anti-torsion plates 542 symmetrically distributed on both sides of the cylinder 541.

[0048] Two connecting pieces 51, two connecting pieces 52, and four connecting pieces 53 are used to connect the T-shaped connecting grooves 40 on the reinforcing male head 21 and the reinforcing female head 11. After connection, the connecting piece 52 drives the connecting piece 53 and the sealing part 42 to seal and adhere to each other, so that the reinforcing male head 21 and the reinforcing female head 11 are pulled to each other under its action, forcing the reinforcing male head 21 and the reinforcing female head 11 to form a double and large-area sealing effect at this point. The large-area sealing effect is brought about by the contact and adhesion of most of the surface of the connecting piece 53 and the sealing part 42. The purpose of using the above structure here is that, since there is a certain distance between the reinforcing component 30 and the adjacent precast component 20, mortar leakage is very likely to occur at this location under pressure after the concrete is poured. If waterproof sealant is directly applied between the formwork, it will be applied either on the side or at the end. If it is applied on the side, it will result in a stepped structure on the wall surface of the formwork and precast component, which is not conducive to the later wall painting. If it is applied at the end, it will result in a small sealing thickness, and the waterproof sealant will easily move outward and fail under pressure.

[0049] As another embodiment of the present invention, based on the above embodiments: as Figures 9 to 10 As shown, a pressure-applying component 60 is also installed between the reinforcing male connector 21 and the reinforcing female connector 11. A guide structure 70 and a locking structure 80 are provided on the opposite side of the reinforcing male connector 21 and the reinforcing female connector 11. The pressure-applying component 60 enters between the reinforcing male connector 21 and the reinforcing female connector 11 through the guide structure 70 and acts on the connecting piece 2 52 from the outside to the inside. Then it is locked in the opposite direction by the locking structure 80. A locking ramp adapted to the locking structure 80 is provided on the side of the pressure-applying component 60 that is opposite to the connecting piece 2 52.

[0050] The reverse locking of the aforementioned pressure-applying component 60 can lock the reinforced male head 21 and the reinforced female head 11 in reverse via the locking ramp and the locking structure 80. Adding a reverse locking structure between the reinforced male head 21 and the reinforced female head 11 can ensure the structural stability and reliability at this point, and prevent micro-cracks from appearing at this point due to the impact of the post-poured concrete and the pressure of the concrete near this point. At the same time, the reverse pressure locking of the connecting piece 2 52 can add two additional waterproof sealing structures, namely the fitting point of the locking ramp on the pressure-applying component 60 and the locking structure 80, and the conical structure formed by the two locking structures.

[0051] The operating steps for using the self-reinforcing device for post-cast concrete sections in prefabricated buildings without the need for dismantling are as follows:

[0052] First, a groove is cut and cleaned at the side end of the precast component 20 near the post-cast concrete part. Waterproof adhesive is applied to the back of the reinforcing male head 21 and the reinforcing male head 21 is installed at the groove using anchor bolts. The main bars and stirrups of the post-cast concrete steel bars are installed in accordance with specifications. Several sets of reinforcing components 30 are installed on the back of the formwork 10 that can be removed.

[0053] Secondly, the reinforced male head 21 and the reinforced female head 11 are connected by the connector 50. The operator brings the connecting pieces 53 at both ends of the connecting piece 1 51 closer together to meet the opening width of the T-shaped connecting groove 40. At this time, the bending angle of the connecting piece 1 51 increases and the bending angle of the connecting piece 2 52 decreases. After the connecting piece 1 51 and the connecting piece 3 53 enter the interior of the T-shaped connecting groove 40, the connecting piece 3 53 will enter along the inner wall of the T-shaped connecting groove 40. The two ends of the connecting piece 1 51 will perform an outward repositioning angle action along the depth of entering the T-shaped connecting groove 40 and abut the connecting pieces 3 53 at both ends against the corresponding guide part 41. Then, a pressure member 60 is temporarily installed on the outside of each of the two connecting pieces 2 52.

[0054] Furthermore, as the gap between the reinforcing male connector 21 and the reinforcing female connector 11 decreases, the bending angle of the connecting piece 2 52 gradually recovers, and both sides of the pressure-applying component 60 come into contact with the guide structure 70. As the gap continues to decrease, the pressure-applying component 60 will move along the guide structure 70 towards the side closer to the connecting piece 2 52, disrupting the stable linear state of the anti-torsion piece 542 and causing it to change to a stable bending state. The two ends of the connecting piece 2 52 will retract inward, causing the bending angle to increase significantly to more than 180°, and driving the connecting piece 3 53 to adhere to the sealing part 42. At the same time, the connecting piece 1 51 will further increase its bending angle and cause the connecting piece 3 53 to adhere to the sealing part 42. As one end of 53 is pressed outward, and the distance between the reinforcing male head 21 and the reinforcing female head 11 further decreases, the pressure-applying member 60 will adhere to the surface of the connecting piece 2 52 under the action of the two guide structures 70 and press the connecting piece 2 52 inward, forcing the connecting pieces 3 53 at both ends of the connecting piece 1 51 to have areas that are close to each other or to further adhere to the sealing part 42. When the pressure-applying member 60 is fully inserted between the reinforcing male head 21 and the reinforcing female head 11, the connecting piece 2 52 will reverse the action of the pressure-applying member 60 to adapt the locking ramp on the pressure-applying member 60 and the locking structure 80 on the reinforcing male head 21 and the reinforcing female head 11 to form a locking adaptation structure.

[0055] During the above step, the following actions occur simultaneously: the stirrups of the post-cast concrete reinforcement move from the opening of the connector 31 into the connector 31 and press against the one-way locking body 32. The one-way locking body 32 will rotate, forcing the slider 35 to move upward relative to the guide groove 33 while rotating, and pressing against the return spring 34. The rotation process of the one-way locking body 32 is that it rotates along the outer circumference of the stirrup under the action of the return spring 34 and the torsion spring 36. After the stirrup is completely inserted into the connector 31, the torsion spring 36 at the rotation node of the slider 35 will rotate the one-way locking body 32 in the opposite direction, and at the same time, cooperate with the return spring 34 to reset the one-way locking body 32, and finally form a fixed connection with the corresponding stirrup.

[0056] Finally, concrete is poured between the two formwork panels 10 that do not need to be removed.

[0057] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made to the technical solutions and inventive concepts of the present invention should all be covered within the scope of protection of the present invention.

Claims

1. A self-reinforcing device for the post-cast concrete part of a fabricated building, comprising a removable formwork (10) and a prefabricated component (20), characterized in that, The template (10) is equipped with a reinforcing female head (11), and the precast component (20) is equipped with a reinforcing male head (21) that is compatible with the reinforcing female head (11). Several reinforcing components (30) suitable for connecting the reinforcing steel bars of the post-cast concrete are installed on one side of the template (10) where concrete is poured. The reinforcing components (30) include a connector (31) fixedly installed on the template (10). The overall cross-section of the connector (31) is a C-shaped structure. A one-way locking body (32) is rotatably installed on one side of the opening of the connector (31). A flexible anti-slip structure relative to the one-way locking body (32) is provided in the connector (31). A guide groove (33) is provided on the one-way locking body (32). A reset spring (34) and a slider (35) are installed in the guide groove (33). (35) A torsion spring (36) is installed on the connecting body (31) via a rotating shaft and at the rotation node of the slider (35). The connecting body (31) is provided with a relief groove (311) and a locking member (312). The post-cast concrete reinforcement is suitable for squeezing the one-way locking body (32) into the connecting body (31) and squeezing the flexible anti-slip structure. The one-way locking body (32) is pressed and rotates gradually along the outer circumference of the post-cast concrete reinforcement. The reset spring (34) is suitable for the one-way locking body (32) to reset along the outer circumference of the post-cast concrete reinforcement after the post-cast concrete reinforcement enters the connecting body (31). The relief groove (311) is suitable for the post-cast concrete reinforcement to be able to completely pass through the one-way locking body (32) after entering the connecting body (31). The locking member (312) is suitable for limiting the outward turning angle after the one-way locking body (32) is reset. Both the reinforced male connector (21) and the reinforced female connector (11) are provided with T-shaped connecting grooves (40). The reinforced male connector (21) and the reinforced female connector (11) are connected by connectors (50) and pull each other to form a matching structure by corresponding T-shaped connecting grooves (40). The connector (50) includes a first connector (51) and a second connector (52). Two first connectors (51) are arranged in front and back, and two second connectors (52) are arranged in the left and right. The two ends of the first connector (51) are respectively connected to the third connector (53). The two third connectors (53) are respectively used to connect the corresponding first connector (51) and second connector (52). An anti-torsion member (54) is connected between the two second connectors (52). The T-shaped connecting groove (40) is provided with a guide part (41) and a sealing part (42). The distance between the two guide portions (41) gradually decreases in the direction close to the sealing portion (42); The connecting piece 2 (52) bends inward by at least 180° under operating conditions.

2. The self-reinforcing device for post-cast concrete sections of prefabricated buildings without dismantling, as described in claim 1, is characterized in that... The anti-torsion component (54) includes a cylinder (541) and anti-torsion plates (542) symmetrically distributed on both sides of the cylinder (541).

3. The self-consolidating device according to claim 2, wherein, A pressure-applying component (60) is also installed between the reinforced male connector (21) and the reinforced female connector (11). A guide structure (70) and a locking structure (80) are provided on the opposite side of the reinforced male connector (21) and the reinforced female connector (11). The pressure-applying component (60) enters between the reinforced male connector (21) and the reinforced female connector (11) through the guide structure (70) and acts on the connecting piece 2 (52) from the outside to the inside, and then is locked in the opposite direction by the locking structure (80).

4. The post-cast concrete part dismantling-free self-reinforcing device of the fabricated building according to claim 3, characterized in that, The pressure-applying member (60) has a locking ramp on the side opposite to the connecting piece 2 (52) that is adapted to the locking structure (80).

5. The method of using the self-reinforcing device for post-cast concrete sections in prefabricated buildings without dismantling, as described in claim 4, is characterized in that... The operation steps are as follows: First, grooves are cut and cleaned at the side end of the precast component (20) near the post-cast concrete part. Waterproof glue is applied to the back of the reinforcing male (21) and the reinforcing male (21) is installed at the groove through anchor bolts. The main bars and stirrups of the post-cast concrete steel bars are installed in accordance with the specifications. Several sets of reinforcing components (30) are installed on the back of the formwork (10) that can be removed. Next, the reinforced male head (21) and the reinforced female head (11) are connected by a connector (50). The operator brings the connecting pieces three (53) at both ends of the connecting piece one (51) closer together to meet the opening width of the T-shaped connecting groove (40). At this time, the bending angle of the connecting piece one (51) increases and the bending angle of the connecting piece two (52) decreases. After the connecting piece one (51) and the connecting piece three (53) enter the interior of the T-shaped connecting groove (40), the connecting piece three (53) will enter along the inner wall of the T-shaped connecting groove (40). The two ends of the connecting piece one (51) will move outward to reset the angle along the depth of entering the T-shaped connecting groove (40) and abut the connecting pieces three (53) at both ends against the corresponding guide part (41). Then, a pressure member (60) is temporarily installed on the outside of each of the two connecting pieces two (52). Furthermore, as the gap between the reinforcing male (21) and the reinforcing female (11) decreases, the bending angle of the connecting piece two (52) will gradually recover, and both sides of the pressure-applying component (60) will contact the guide structure (70). As the gap continues to decrease, the pressure-applying component (60) will move along the guide structure (70) towards the side closer to the connecting piece two (52), disrupting the stable linear state of the anti-torsion piece (542) and causing it to change to a stable bending state. The two ends of the connecting piece two (52) will retract, causing the bending angle to increase significantly to a bending angle greater than 180°, and driving the connecting piece three (53) to adhere to the sealing part (42). At the same time, the connecting piece one (51) will further increase the bending angle and cause the connecting piece three (53) to... As the ends are squeezed outward, the distance between the reinforcing male head (21) and the reinforcing female head (11) further decreases. The pressure-applying component (60) will adhere to the surface of the connecting piece two (52) under the action of the two guide structures (70) and apply pressure to the connecting piece two (52) inward, forcing the connecting pieces three (53) at both ends of the connecting piece one (51) to have areas close to each other or further adhere to the sealing part (42). When the pressure-applying component (60) is fully inserted between the reinforcing male head (21) and the reinforcing female head (11), the connecting piece two (52) will reverse the action of the pressure-applying component (60) to adapt the locking ramp on the pressure-applying component (60) and the locking structure (80) on the reinforcing male head (21) and the reinforcing female head (11) to form a locking adaptation structure. In the above step, the following actions occur simultaneously: the stirrups of the post-cast concrete reinforcement move from the opening position of the connector (31) into the connector (31) and squeeze the one-way locking body (32). The one-way locking body (32) will rotate, forcing the one-way locking body (32) to rotate. At the same time, the slider (35) will move upward relative to the guide groove (33) and squeeze the reset spring (34). The rotation process of the one-way locking body (32) is that it rotates along the outer circumference of the stirrup under the action of the reset spring (34) and the torsion spring (36). After the stirrup is completely inserted into the connector (31), the torsion spring (36) at the rotation node of the slider (35) will rotate the one-way locking body (32) in the opposite direction. At the same time, the reset spring (34) will reset the one-way locking body (32) and finally form a fixed connection with the corresponding stirrup. Finally, concrete is poured between the two non-removable formwork (10).

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