A prefabricated building wallboard post-cast section longitudinal reinforcement fast positioning and fixing device

Abstract

The utility model discloses a kind of assembly type building wallboard post-cast section longitudinal reinforcement quick positioning fixing device, it includes side positioning plate component and intermediate positioning plate component;Side positioning plate component includes linear side positioning plate and first right-angled side positioning plate and second right-angled side positioning plate, one side of linear side positioning plate, the outside of first right-angled side positioning plate and the inside of second right-angled side positioning plate are equipped with positioning slot, the lower surface of the both ends of linear side positioning plate, first right-angled side positioning plate and second right-angled side positioning plate is equipped with limit structure respectively, the upper surface of the both ends of linear side positioning plate, first right-angled side positioning plate and second right-angled side positioning plate is equipped with magnetic block respectively, intermediate positioning plate component is used for being clamped between two rows of longitudinal reinforcement of post-cast section.The utility model improves construction efficiency, and can better guarantee the binding quality of longitudinal reinforcement, use flexible, good practicality.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated building construction, specifically relating to a quick positioning and fixing device for longitudinal reinforcement in the post-cast section of prefabricated building wall panels. Background Technology

[0002] In the current prefabricated building construction process, after the precast wall panels are hoisted, a post-cast section is reserved between adjacent wall panels. Common shapes of post-cast sections include "I-shaped", "L-shaped", "T-shaped", and "cross-shaped". The core purpose of setting up post-cast sections is to form a strong connection between the hoisted precast wall panels through subsequent concrete pouring, thereby meeting the mandatory requirements of building structure for safety and stability.

[0003] However, before the concrete is poured in the post-cast section, the longitudinal reinforcement in the area needs to be tied. Each section of the post-cast section will have two rows of longitudinal reinforcement. The existing process has significant technical limitations: the positioning of the longitudinal reinforcement relies entirely on manual measurement and on-site marking. Not only is the positioning accuracy difficult to guarantee, but it is also very easy for it to shift or misalign due to external disturbances during the tying process.

[0004] This situation directly leads to two major problems: first, the quality and stability of longitudinal reinforcement binding are poor, making it difficult to meet the design specifications for the precise position of the reinforcement; second, the low efficiency of manual operation seriously restricts the construction progress of the post-cast section, thereby affecting the overall project progress efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a quick positioning and fixing device for the longitudinal reinforcement of the post-cast section of prefabricated building wall panels.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A rapid positioning and fixing device for longitudinal reinforcement in the post-cast section of a prefabricated building wall panel is characterized by comprising a side positioning plate assembly and a middle positioning plate assembly. The side positioning plate assembly includes a straight side positioning plate used on the straight edge of the post-cast section and a first right-angle side positioning plate and a second right-angle side positioning plate used on the right-angle side of the post-cast section. Positioning slots are provided on one side of the straight side positioning plate, the outer side of the first right-angle side positioning plate, and the inner side of the second right-angle side positioning plate, respectively, corresponding to the position of the longitudinal reinforcement. Limiting structures that fit onto the upper part of the prefabricated wall panel are provided at both ends of the straight side positioning plate, the first right-angle side positioning plate, and the second right-angle side positioning plate. These limiting structures restrict displacement along the length and width of the prefabricated wall panel. Magnetic blocks are provided on both ends of the straight side positioning plate, the first right-angle side positioning plate, and the second right-angle side positioning plate. During use, the magnetic blocks between adjacent ends attract each other. The middle positioning plate assembly is used to lock between two rows of longitudinal reinforcement in the post-cast section to limit the distance between the two rows of longitudinal reinforcement.

[0008] A further technical solution of this utility model is as follows: the limiting structure is located on the outer side below both ends of the straight side positioning plate, the first right-angle side positioning plate and the second right-angle side positioning plate. The limiting structure includes a length direction limiting block and a width direction limiting block arranged perpendicularly. When in use, the length direction limiting block is attached to the end face of the precast wall panel and the width direction limiting block is attached to the side of the precast wall panel.

[0009] A further technical solution of this utility model is: the intermediate positioning plate assembly includes a straight intermediate positioning plate for being locked between the two rows of longitudinal reinforcement bars in the post-cast section, and the width of the intermediate positioning plate matches the distance between the two rows of longitudinal reinforcement bars in the post-cast section.

[0010] A further technical solution of this utility model is as follows: the two ends of the straight side positioning plate, the first right-angle side positioning plate and the second right-angle side positioning plate are respectively provided with protrusions on the same side as the positioning slot, and the magnetic block is provided on the top of the protrusions. When in use, the end faces of the protrusions between adjacent ends abut together.

[0011] A further technical solution of this utility model is as follows: the first right-angle side positioning plate and the second right-angle side positioning plate are both composed of two perpendicular straight plates, and the two straight plates are connected together by a rotating shaft bolt.

[0012] A further technical solution of this utility model is: the magnetic block is a high-strength magnetic block.

[0013] A further technical solution of this utility model is as follows: the straight side positioning plate, the first right-angle side positioning plate and the second right-angle side positioning plate are provided with top blocks located on the same side as the positioning slot, and the top blocks of the adjacent side positioning plates abut together in use.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention uses the positioning slots of the side positioning plate to restrict the position of the inserted longitudinal reinforcement bars along their length, and the middle positioning plate assembly to restrict the distance between the two rows of longitudinal reinforcement bars, thereby achieving accurate positioning of the longitudinal reinforcement bars. It is evident that by using this invention to position the longitudinal reinforcement bars in the post-cast section, it is no longer necessary to rely on manual measurement and on-site marking, thus improving efficiency and better ensuring the quality of the longitudinal reinforcement bar binding.

[0016] This utility model is flexible in use and highly practical, capable of simultaneously solving the positioning problem of longitudinal reinforcement in post-cast sections of "I-shaped", "L-shaped", "T-shaped", and "cross-shaped" designs. For example, for an "I-shaped" post-cast section, positioning is achieved through a combination of two straight side positioning plates and a middle positioning plate; for an "L-shaped" post-cast section, positioning is achieved through a combination of a first right-angle side positioning plate, a second right-angle side positioning plate, and a middle positioning plate assembly; for a "T-shaped" post-cast section, positioning is achieved through a combination of a straight side positioning plate, two first right-angle side positioning plates, and a middle positioning plate assembly; and for a "cross-shaped" post-cast section, positioning is achieved through a combination of four first right-angle side positioning plates and a middle positioning plate assembly. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the components of the quick positioning and fixing device according to an embodiment of the present utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of the component combination used by the quick positioning and fixing device in this embodiment of the present invention to position the longitudinal reinforcement of the "I-shaped" post-cast section;

[0019] Figure 3 This is a top view of the quick positioning and fixing device of this utility model when positioning the longitudinal reinforcement of the "I-shaped" post-cast section.

[0020] Figure 4 This is a three-dimensional schematic diagram of the component combination used by the quick positioning and fixing device in this embodiment of the present invention to position the longitudinal reinforcement of the "L-shaped" post-cast section;

[0021] Figure 5 This is a top view of the quick positioning and fixing device of this utility model when positioning the longitudinal reinforcement of the "L-shaped" post-cast section.

[0022] Figure 6 This is a three-dimensional schematic diagram of the component combination used by the quick positioning and fixing device in this embodiment of the present invention to position the longitudinal reinforcement of the "T-shaped" post-cast section;

[0023] Figure 7 This is a top view of the quick positioning and fixing device of this utility model when positioning the longitudinal reinforcement of the "T-shaped" post-cast section.

[0024] Figure 8 This is a three-dimensional schematic diagram of the component combination used by the quick positioning and fixing device in this embodiment of the present invention to position the longitudinal reinforcement of the "cross-shaped" post-cast section;

[0025] Figure 9 This is a top view of the quick positioning and fixing device of this utility model when positioning the longitudinal reinforcement of the "cross-shaped" post-cast section.

[0026] Meaning of the labels in the attached diagram:

[0027] 1-First right-angle side positioning plate; 2-Second right-angle side positioning plate; 3-Straight side positioning plate; 4-Intermediate positioning plate; 5-Rotating shaft bolt; 6-Limiting structure; 6.1-Width direction limiting block; 6.2-Length direction limiting block; 7-Magnetic block; 8-Positioning slot; 9-Protrusion; 10-Precast wall panel; 11-Longitudinal reinforcement; 12-Top block. Detailed Implementation

[0028] The present invention will be further described below with reference to embodiments.

[0029] Example:

[0030] like Figure 1 The above describes a quick positioning and fixing device for the longitudinal reinforcement of the post-cast section of a prefabricated building wall panel according to this embodiment. It includes a side positioning plate assembly and a middle positioning plate assembly. The side positioning plate assembly includes a straight side positioning plate 3 used on the straight edge of the post-cast section and a first right-angle side positioning plate 1 and a second right-angle side positioning plate 2 used on the right-angle side of the post-cast section. The middle positioning plate assembly includes a straight middle positioning plate 4 used to be locked between the two rows of longitudinal reinforcements in the post-cast section. The first right-angle side positioning plate 1 and the second right-angle side positioning plate 2 are both composed of two perpendicular straight plates. The two straight plates are connected together by a pivot bolt 5, so that the two straight plates can rotate relative to each other.

[0031] The straight side positioning plate 3, the outer side of the first right-angle side positioning plate 1, and the inner side of the second right-angle side positioning plate 2 are respectively provided with positioning grooves 8 corresponding to the positions of the longitudinal ribs. The depth of the positioning grooves 8 is greater than the diameter of the longitudinal ribs 11.

[0032] The outer sides of the lower ends of the straight side positioning plate 3, the first right-angle side positioning plate 1, and the second right-angle side positioning plate 2 are respectively provided with limiting structures 6 that fit onto the upper end of the precast wall panel. The limiting structures 6 can restrict the displacement along the length and width directions of the precast wall panel 10. In this embodiment, the limiting structure 6 includes a length direction limiting block 6.2 and a width direction limiting block 6.1 arranged perpendicularly. In use, the limiting structure 6 is fitted onto the corner of the corresponding side of the upper end of the precast wall panel 10. The length direction limiting block 6.2 abuts against the end face of the precast wall panel 10, thereby restricting the displacement along the length direction of the precast wall panel 10. The width direction limiting block 6.1 abuts against the side of the precast wall panel 10, thereby restricting the displacement along the width direction of the precast wall panel 10.

[0033] In this embodiment, the straight side positioning plate 3, the first right-angled side positioning plate 1, and the second right-angled side positioning plate 2 each have a protrusion 9 on the same side as the positioning slot. A magnetic block 7 is provided on the outer surface of each protrusion 9. During use, the end faces of the protrusions 9 between adjacent ends abut against each other, and the magnetic blocks 7 between adjacent ends adhere to each other and attract each other, thereby quickly connecting the ends of adjacent positioning plates together. The magnetic block 7 used in this embodiment is a high-strength magnetic block.

[0034] In this embodiment, the straight side positioning plate 3, the first right-angle side positioning plate 1, and the second right-angle side positioning plate 2 are provided with top blocks 12 located on the same side as the positioning slot 8. When in use, the top blocks 12 of adjacent side positioning plates abut together to ensure that there is a set distance between adjacent side positioning plates.

[0035] The width of the intermediate positioning plate 4 is matched with the distance between the two rows of longitudinal reinforcement 11 in the post-cast section. When in use, the intermediate positioning plate 4 is stuck between the two rows of longitudinal reinforcement 11 in the post-cast section, which can limit the distance between the two rows of longitudinal reinforcement 11 in the post-cast section.

[0036] In practical application, different combinations of straight side positioning plates 3, first right-angle side positioning plates 1, second right-angle side positioning plates 2, and intermediate positioning plates 4 are used according to the shape of the post-cast section. This combination can simultaneously solve the positioning problem of the longitudinal reinforcement 11 in "I-shaped", "L-shaped", "T-shaped", and "cross-shaped" post-cast sections. The following is the specific structure for positioning the longitudinal reinforcement 11 in "I-shaped", "L-shaped", "T-shaped", and "cross-shaped" post-cast sections:

[0037] 1. For example Figure 2 and Figure 3 As shown, a “one-line” post-cast section is formed between two precast wall panels 10 on a straight line. When positioning the longitudinal reinforcement 11 of the “one-line” post-cast section, a combination of two straight side positioning plates 3 and one middle positioning plate 4 is used.

[0038] The width of the straight side positioning plate 3 used for the "one-line" post-cast section is 20mm smaller than half the thickness of the precast wall panel 10. The number of positioning slots 8 is the same as the number of longitudinal bars 11 in the same row. The width of the positioning slots 8 is 2mm larger than the diameter of the longitudinal bars 11 (e.g., when the diameter of the longitudinal bars is 16mm, the groove width is 18mm). The spacing of the positioning slots 8 is the same as the spacing of the designed longitudinal bars. The height of the limiting blocks is 20-30mm. The spacing of the length direction limiting blocks 6.2 at both ends of the straight side positioning plate 3 matches the length of the post-cast section. The spacing of the width direction limiting blocks 6.1 at the same end of the combined two straight side positioning plates 3 matches the thickness of the precast wall panel 10.

[0039] The construction operation process is as follows:

[0040] Two straight side positioning plates 3 are placed on both sides of the post-cast section, with the positioning slots 8 facing inward. The limiting structure 6 is correspondingly fitted on the corner of the upper end of the precast wall panel 10, and the magnetic blocks 7 at the same end are attracted to each other.

[0041] Insert each of the longitudinal ribs 11 into the corresponding positioning slots 8 of the straight side positioning plates 3 on both sides to complete the horizontal (left and right) positioning of the longitudinal ribs 11. At this time, the spacing error of the longitudinal ribs 11 is ≤ ±1mm.

[0042] An intermediate positioning plate 4 is inserted between the two rows of longitudinal reinforcement bars 11, with its bottom surface aligned with the top surface of the straight side positioning plate 3, ultimately achieving a horizontal position. The two sides of the intermediate positioning plate 4 abut against the inner sides of the two rows of longitudinal reinforcement bars 11, thereby limiting the distance between the two rows of longitudinal reinforcement bars 11 (e.g., 90mm), thus completing the spatial positioning of the longitudinal reinforcement bars 11. Two straight side positioning plates 3 and one intermediate positioning plate 4 cover the top of the post-cast section.

[0043] Next, the fixed longitudinal reinforcement 11 can be tied directly. Of course, the tying process will also involve stirrups, tie bars, etc. After the tying is completed, the middle positioning plate 4 is pulled out vertically upwards, and then the straight side positioning plate 3 is pulled out horizontally to both sides to complete the removal of the quick positioning and fixing device. Then it can be transferred to the next section of construction. There is no residue in the operation.

[0044] 2. For example Figure 4 and Figure 5 As shown, an "L-shaped" post-cast section is formed between two perpendicular precast wall panels 10. When positioning the longitudinal reinforcement 11 of the "L-shaped" post-cast section, a combination of a first right-angle side positioning plate 1, a second right-angle side positioning plate 2, and two intermediate positioning plates 4 is used.

[0045] The width of the side positioning plate is 20mm smaller than half the thickness of the precast wall panel 10. The number of positioning slots 8 is the same as the number of longitudinal bars 11 in the same row. The width of the positioning slots 8 is 2mm larger than the diameter of the longitudinal bars 11 (e.g., when the diameter of the longitudinal bars is 16mm, the groove width is 18mm). The spacing of the positioning slots 8 is the same as the spacing of the designed longitudinal bars. The height of the limiting block is 20-30mm.

[0046] The construction operation process is as follows:

[0047] The first right-angled side positioning plate 1 and the second right-angled side positioning plate 2 are placed on both sides of the post-cast section, with the positioning slot 8 facing inward. The limiting structure 6 is correspondingly fitted on the corner of the upper end of the precast wall panel 10, and the magnetic blocks 7 at the same end are attracted to each other.

[0048] Insert all longitudinal ribs 11 one by one into the corresponding positioning slots 8 to complete the horizontal (left and right) positioning of the longitudinal ribs 11. At this time, the spacing error of the longitudinal ribs 11 is ≤ ±1mm.

[0049] An intermediate positioning plate 4 is inserted between the two rows of longitudinal reinforcement bars 11. The two intermediate positioning plates 4 are respectively inserted into the horizontal and vertical sections of the post-cast section. The bottom of the intermediate positioning plate 4 is in contact with the top of the side positioning plate, and the two sides of the intermediate positioning plate 4 abut against the inner sides of the two rows of longitudinal reinforcement bars 11, thereby limiting the distance between the two rows of longitudinal reinforcement bars 11 and finally completing the spatial positioning of the longitudinal reinforcement bars 11. The first right-angled side positioning plate 1, the second right-angled side positioning plate 2, and the intermediate positioning plate 4 cover the top of the post-cast section.

[0050] Next, the fixed longitudinal reinforcement 11 can be tied directly. Of course, the tying process will also involve stirrups, tie bars, etc. After the tying is completed, the middle positioning plate 4 is pulled out vertically upwards first, and then the first right-angle side positioning plate 1 and the second right-angle side positioning plate 2 are removed to complete the removal of the quick positioning and fixing device. Then it can be transferred to the next section of construction without any residue.

[0051] The specific disassembly process of the first right-angle side positioning plate 1 and the second right-angle side positioning plate 2 is as follows: First, rotate one of the plates outward so that the positioning slot 8 of the plate separates from the longitudinal rib 11, and then pull out the other plate outward, and finally completely remove it.

[0052] 3. For example Figure 6 and Figure 7 As shown, a "T-shaped" post-cast section is formed between two precast wall panels 10 on the same straight line and a corresponding precast wall panel 10 perpendicularly. When positioning the longitudinal reinforcement 11 of the "T-shaped" post-cast section, a combination of a straight side positioning plate 3, two right-angle side positioning plates 1 and two intermediate positioning plates 4 is used.

[0053] The width of the side positioning plate is 20mm smaller than half the thickness of the precast wall panel. The number of positioning slots 8 is the same as the number of longitudinal bars 11 in the same row. The width of the positioning slots 8 is 2mm larger than the diameter of the longitudinal bars. The spacing of the positioning slots 8 is the same as the spacing of the designed longitudinal bars. The height of the limiting block is 20-30mm.

[0054] The construction operation process is as follows:

[0055] The straight side positioning plate 3 is placed on the straight side of the "T", and the two first right-angle side positioning plates 1 are placed on the two right-angle sides of the "T". The positioning slot 8 faces inward, and the limiting structure 6 is correspondingly fitted on the corner of the upper end of the precast wall panel 10. The magnetic blocks 7 at the same end are attracted to each other.

[0056] Insert all longitudinal ribs 11 one by one into the corresponding positioning slots 8 to complete the horizontal (left and right) positioning of the longitudinal ribs 11. At this time, the spacing error of the longitudinal ribs 11 is ≤ ±1mm.

[0057] An intermediate positioning plate 4 is inserted between the two rows of longitudinal reinforcement bars 11. The two intermediate positioning plates 4 are arranged in a T-shape, with the bottom of the intermediate positioning plate 4 fitting against the top of the side positioning plate. The two sides of the intermediate positioning plate 4 respectively abut against the inner sides of the two rows of longitudinal reinforcement bars 11, thereby limiting the distance between the two rows of longitudinal reinforcement bars 11 and finally completing the spatial positioning of the longitudinal reinforcement bars 11. The straight side positioning plate 3, the first right-angle side positioning plate 1, and the intermediate positioning plate 4 cover the top of the post-cast section.

[0058] Next, the fixed longitudinal reinforcement 11 can be tied directly. Of course, the tying process will also involve stirrups, tie bars, etc. After the tying is completed, first pull the middle positioning plate 4 vertically upward, then pull the straight side positioning plate 3 horizontally to the side, and then remove the first right-angle side positioning plate 1 to complete the removal of the quick positioning and fixing device. Then it can be transferred to the next section of construction. There is no residue in the operation.

[0059] The specific disassembly process of the first right-angle side positioning plate 1 is as follows: First, rotate one of the plates outward so that the positioning slot 8 of the plate separates from the longitudinal rib 11, and then pull out the other plate outward, and finally completely remove it.

[0060] 4. For example Figure 8 and Figure 9 As shown, a "cross-shaped" post-cast section is formed between four precast wall panels 10 arranged in a cross shape. When positioning the longitudinal reinforcement 11 of the "cross-shaped" post-cast section, a combination of four first right-angle side positioning plates 1 and three intermediate positioning plates 4 is used.

[0061] The width of the side positioning plate is 20mm smaller than half the thickness of the precast wall panel 10. The number of positioning slots 8 is the same as the number of longitudinal bars 11 in the same row. The width of the positioning slots 8 is 2mm larger than the diameter of the longitudinal bars 11. The spacing of the positioning slots 8 is the same as the spacing of the designed longitudinal bars. The height of the limiting block is 20-30mm.

[0062] The construction operation process is as follows:

[0063] The four right-angled side positioning plates 1 are placed on the four right-angled sides of the "cross" shape, with the positioning slots 8 facing inward. The limiting structure 6 is correspondingly fitted onto the corner of the upper end of the precast wall panel 10, and the magnetic blocks 7 at the same end are attracted to each other.

[0064] Insert all longitudinal ribs 11 one by one into the corresponding positioning slots 8 to complete the horizontal (left and right) positioning of the longitudinal ribs 11. At this time, the spacing error of the longitudinal ribs 11 is ≤ ±1mm.

[0065] Intermediate positioning plates 4 are inserted between the two rows of longitudinal reinforcement bars 11. The three intermediate positioning plates 4 are arranged in a cross shape, with the bottom of the intermediate positioning plates 4 fitting against the top of the side positioning plates. The two sides of the intermediate positioning plates 4 respectively abut against the inner sides of the two rows of longitudinal reinforcement bars 11, thereby limiting the distance between the two rows of longitudinal reinforcement bars 11 and finally completing the spatial positioning of the longitudinal reinforcement bars 11. Finally, the four right-angled side positioning plates 1 and the three intermediate positioning plates 4 cover the top of the post-cast section.

[0066] Next, the fixed longitudinal reinforcement 11 can be tied directly. Of course, the tying process will also involve stirrups, tie bars, etc. After the tying is completed, the middle positioning plate 4 is pulled out vertically upwards first, and then the first right-angle side positioning plate 1 is removed to complete the removal of the quick positioning and fixing device. Then it can be transferred to the next section of construction. There are no residues in the operation.

[0067] The specific disassembly process of the first right-angle side positioning plate 1 is as follows: First, rotate one of the plates outward so that the positioning slot 8 of the plate separates from the longitudinal rib 11, and then pull out the other plate outward, and finally completely remove it.

[0068] The rapid positioning and fixing device in this embodiment has the following technical effects:

[0069] ① Precise positioning: By using positioning slots, limiting structures, and the width of the intermediate positioning plate, the position of the longitudinal reinforcement is constrained in the horizontal (left and right) and row spacing (front and back) directions, replacing the rough manual positioning and ensuring that the spacing and position of the longitudinal reinforcement meet the design specifications.

[0070] ② Efficiency improvement: The device can be inserted to complete the positioning, and there is no need to repeatedly adjust the steel bars during binding, which greatly shortens the construction time; the dismantling process is simple and can be quickly reused.

[0071] ③ Easy to operate: The structure is simple and workers can get started with simple training; the device can be prefabricated and adapted to different post-cast section sizes (by adjusting the parameters of the groove and limit block), and has strong versatility.

[0072] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A rapid positioning and fixing device for longitudinal reinforcement in the post-cast section of prefabricated building wall panels, characterized in that: The system includes a side positioning plate assembly and a middle positioning plate assembly. The side positioning plate assembly includes a straight side positioning plate for use on the straight edge of the post-cast section, and a first right-angled side positioning plate and a second right-angled side positioning plate for use on the right-angled edge of the post-cast section. Positioning slots are provided on one side of the straight side positioning plate, the outer side of the first right-angled side positioning plate, and the inner side of the second right-angled side positioning plate, corresponding to the positions of the longitudinal reinforcement. The two ends of the straight side positioning plate, the first right-angled side positioning plate, and the second right-angled side positioning plate are respectively provided with limiting structures that fit onto the upper end of the precast wall panel. These limiting structures restrict displacement along the length and width of the precast wall panel. Magnetic blocks are provided on the two ends of the straight side positioning plate, the first right-angled side positioning plate, and the second right-angled side positioning plate, respectively. During use, the magnetic blocks between adjacent ends attract each other. The middle positioning plate assembly is used to lock between the two rows of longitudinal reinforcements in the post-cast section to limit the distance between the two rows of longitudinal reinforcements.

2. The rapid positioning and fixing device for longitudinal reinforcement of post-cast sections of prefabricated building wall panels according to claim 1, characterized in that: The limiting structure is located on the outer side below both ends of the straight side positioning plate, the first right-angle side positioning plate and the second right-angle side positioning plate. The limiting structure includes a length direction limiting block and a width direction limiting block arranged perpendicularly. In use, the length direction limiting block abuts against the end face of the precast wall panel and the width direction limiting block abuts against the side of the precast wall panel.

3. The rapid positioning and fixing device for longitudinal reinforcement of post-cast sections of prefabricated building wall panels according to claim 1, characterized in that: The intermediate positioning plate assembly includes a straight intermediate positioning plate for locking between two rows of longitudinal reinforcement bars in the post-cast section, the width of which matches the distance between the two rows of longitudinal reinforcement bars in the post-cast section.

4. The rapid positioning and fixing device for longitudinal reinforcement of post-cast sections of prefabricated building wall panels according to claim 1, characterized in that: The straight side positioning plate, the first right-angle side positioning plate and the second right-angle side positioning plate are respectively provided with protrusions on the same side as the positioning slots. The magnetic block is located on the protrusions. When in use, the end faces of the protrusions between adjacent ends abut together.

5. The rapid positioning and fixing device for longitudinal reinforcement of post-cast sections of prefabricated building wall panels according to claim 1, characterized in that: Both the first right-angle side positioning plate and the second right-angle side positioning plate are composed of two perpendicular straight plates, which are connected together by a pivot bolt.

6. The rapid positioning and fixing device for longitudinal reinforcement of post-cast sections of prefabricated building wall panels according to claim 1, characterized in that: The magnetic block is a high-strength magnetic block.

7. The rapid positioning and fixing device for longitudinal reinforcement of post-cast sections of prefabricated building wall panels according to claim 1, characterized in that: The straight side positioning plate, the first right-angle side positioning plate, and the second right-angle side positioning plate are provided with top blocks located on the same side as the positioning slot. When in use, the top blocks of adjacent side positioning plates abut together.

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