High-strength cold-drawn steel and its preparation process

Abstract

The application relates to the technical field of flat steel, in particular to high-strength cold-drawing flat steel and a preparation process thereof. The high-strength cold-drawing flat steel comprises a base and an extension base arranged on the surface of the flat steel, a pressing groove and a blocking groove arranged in the flat steel, a baffle arranged on the surface of a pressing plate, a cylinder and a positioning plate arranged on the surface of the baffle, a cross plate arranged on the surface of the positioning plate, a resisting plate arranged on the surface of a connecting plate, a circular connecting groove arranged in the connecting plate, and a circular resisting groove arranged in the resisting plate. The baffle can limit the flat steel, and the baffle can block the flat steel. Compared with traditional bolts, the baffle has greater rigidity and cannot be damaged, so that the stability of a building structure is ensured. The resisting plate can strengthen the limiting effect on the baffle, so that the rigidity of the baffle is strengthened. The circular resisting groove can increase the contact area of the resisting plate and the baffle. The cylinder and the circular resisting groove are in limiting connection, so that the stability of the baffle is strengthened.

Description

Technical Field

[0001] This invention relates to the field of flat steel technology, specifically to a high-strength cold-drawn flat steel and its manufacturing process. Background Technology

[0002] Flat steel, also known as flat bar, refers to a type of steel whose width is much greater than its thickness. Its cross-sectional shape is rectangular, and the edges are usually right angles, but can also be chamfered. Compared with other shapes of steel, flat steel has greater load-bearing capacity and rigidity.

[0003] In the existing technology, high-strength cold-drawn flat steel is used to make building structural components. The high-strength cold-drawn flat steel is placed on the building beam and fixed to the building by bolts. Concrete is poured on the high-strength cold-drawn flat steel to achieve the function of bearing the concrete.

[0004] However, when high-strength cold-drawn flat steel is subjected to heavy loads for a long time, the flat steel will deform. The deformation will generate tensile force on the bolts, which will cause the bolts to be damaged. The damage will cause the high-strength cold-drawn flat steel to be unstable in the building, thus affecting the stability of the building. Summary of the Invention

[0005] The purpose of this invention is to provide a high-strength cold-drawn flat steel and its manufacturing process, in order to solve the problem mentioned in the background art that when the high-strength cold-drawn flat steel is subjected to heavy loads for a long time, the flat steel will deform, the deformation will generate tensile force on the bolts, the tensile force will cause the bolts to be damaged, and the damage will lead to instability of the high-strength cold-drawn flat steel in buildings, thereby affecting the stability of the buildings.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a high-strength cold-drawn flat steel, characterized in that it comprises:

[0007] A flat steel bar, wherein a base and an extension seat are provided on the surface of the flat steel bar, and a pressure groove and a retaining groove are provided inside the flat steel bar;

[0008] A pressure plate, wherein the surface of the pressure plate is provided with a baffle, and the surface of the baffle is provided with a cylinder and a positioning plate, and the surface of the positioning plate is provided with a cross plate; and

[0009] A connecting plate, wherein a backing plate is provided on the surface of the connecting plate, and a circular connecting groove is provided in the connecting plate, and a circular backing groove is provided in the backing plate.

[0010] Preferably, the bottom end of the flat steel is fixedly connected to the top end of the extension seat, the bottom end of the flat steel is fixedly connected to the top end of the base, and the outer surface of the top of the base is fixedly connected to the side surface of the extension seat. The bottom side surface of the base is provided with a base plate, the bottom side surface of the base is fixedly connected to the inner surface of the base plate, and a pressure groove is opened inside the top end of the flat steel. A baffle groove is opened inside the flat steel, and a pressure plate is provided on the inner surface of the pressure groove.

[0011] Preferably, the cross-sectional dimension of the pressure plate is smaller than that of the pressure groove, the bottom end of the pressure plate abuts against the bottom surface of the pressure groove, a baffle is provided on the outer surface of the bottom end of the pressure plate, and the outer surface of the bottom end of the pressure plate and the top end of the baffle are fixedly connected.

[0012] Preferably, the outer surface of the baffle is provided with a plurality of cylinders, which are evenly distributed on both sides of the outer surface of the baffle. The cylinders are semi-cylindrical, and the inner surface of the cylinders is fixedly connected to the outer surface of the baffle. A positioning plate is provided at the bottom end of the baffle.

[0013] Preferably, the positioning plate is rectangular, with the top end of the positioning plate and the bottom end of the baffle fixedly connected. The outer surface of the bottom end of the positioning plate is provided with multiple cross plates, which are evenly distributed on the outer surface of the bottom end of the positioning plate. The outer surface of the top end of the cross plates is fixedly connected to the outer surface of the bottom end of the positioning plate. The outer surface of the cross plates is provided with multiple convex plates, which are evenly distributed around the outer surface of the cross plates. The inner surface of the convex plates is fixedly connected to the outer surface of the cross plates.

[0014] Preferably, the inner surface of the side end of the connecting plate and the outer surface of the side end of the base are fixedly connected. The top outer surface of the connecting plate is provided with a stop plate, and the top outer surface of the connecting plate and the bottom end of the stop plate are fixedly connected. Multiple circular stop grooves are opened in the stop plate, and a stop groove is opened on the outside of the stop plate. The inner diameter of the circular stop groove is larger than the diameter of the cylinder. The inner surface of the circular stop groove and the outer surface of the cylinder are slidably connected. A circular connecting groove is opened inside the connecting plate, and the size of the circular connecting groove is equal to the size of the circular stop groove. An insertion port is opened inside the connecting plate, and the inner surface of the insertion port and the outer surface of the baffle are slidably connected.

[0015] Preferably, the outer surface of the base side end is provided with multiple insert plates, and the multiple insert plates are located at the upper and lower parts of the outer surface of the base side end. The inner surface of the insert plate side end and the outer surface of the base side end are fixedly connected. Multiple triangular grooves are opened inside the insert plate, and the multiple triangular grooves are evenly distributed inside the insert plate. The outer surface of the base bottom end is provided with a bottom plate.

[0016] Preferably, the inner surface of the side end of the base plate and the outer surface of the side end of the base are fixedly connected. The base plate has a positioning groove inside, and a positioning plate is provided on the inner surface of the positioning groove. The cross-sectional size of the positioning groove is larger than the cross-sectional size of the positioning plate. The inner surface of the positioning groove and the outer surface of the positioning plate abut each other. The bottom surface of the positioning groove has multiple cross grooves.

[0017] Preferably, the inner surface of the cross groove is provided with a cross plate, the cross groove cross-sectional dimension is larger than the cross plate cross-sectional dimension, the bottom surface of the cross groove and the bottom end of the cross plate abut against each other, and multiple cross grooves are evenly distributed on the bottom surface of the positioning groove, and the bottom end of the cross groove and the bottom surface of the positioning groove are fixedly connected.

[0018] A process for producing high-strength cold-drawn flat steel, the process comprising the following steps:

[0019] Step 1: Installation. Place the flat steel on the top surface of the building structure. At the same time, insert the connecting plate and the bottom plate into the building. Insert the pressure plate into the pressure groove and the baffle into the baffle groove. Pour concrete onto the pressure plate. The concrete fixes the flat steel and the pressure plate. The pressure plate limits the movement of the flat steel, and the baffle blocks the flat steel. Compared with traditional bolts, the baffle has greater rigidity and will not be damaged, ensuring the stability of the building structure.

[0020] Step 2: Limiting. When the baffle moves downward, it passes through the positioning groove, and the cylinder on the baffle passes through the circular abutment groove. The abutment plate supports the baffle and strengthens its limiting function, thus increasing the rigidity of the baffle. The circular abutment groove increases the contact area between the abutment plate and the baffle. The cylinder and the circular abutment groove limit the connection and enhance the stability of the baffle.

[0021] Step 3: Positioning. When the baffle reaches the base plate, the positioning plate on the baffle is inserted into the positioning groove, and the cross plate is inserted into the cross groove. The positioning plate achieves the positioning function of the bottom end of the baffle, the cross plate enhances the stability of the positioning plate, and the convex plate enhances the positioning function of the cross plate.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] This invention proposes a high-strength cold-drawn flat steel section. The flat steel section is placed on the top surface of a building structure. Simultaneously, connecting plates and a base plate are inserted into the building's interior. A pressure plate is inserted into a pressure groove, and a baffle is inserted into a baffle groove. Concrete is poured onto the pressure plate, fixing the flat steel section and the pressure plate in place. The pressure plate limits the movement of the flat steel section, while the baffle obstructs its movement. Compared to traditional bolts, the baffle has greater rigidity, preventing damage and ensuring the stability of the building structure. When the baffle moves downwards, it passes through a fixed... The cylindrical part of the baffle passes through the circular abutment groove. The abutment plate supports the baffle and strengthens its limiting function, thus increasing the baffle's rigidity. The circular abutment groove increases the contact area between the abutment plate and the baffle. The cylindrical part and the circular abutment groove are connected for limiting, enhancing the stability of the baffle. When the baffle reaches the bottom plate, the positioning plate on the baffle inserts into the positioning groove, and the cross plate inserts into the cross groove. The positioning plate positions the bottom of the baffle, and the cross plate strengthens the stability of the positioning plate. The protruding plate strengthens the positioning function of the cross plate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0025] Figure 2 This is a cross-sectional view of the main structure of the present invention;

[0026] Figure 3 For the present invention Figure 2Enlarged schematic diagram of the structure at point A;

[0027] Figure 4 This is a schematic diagram of the connecting plate structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the cross-shaped plate structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the abutment structure of the present invention.

[0030] In the diagram: 1. Flat steel; 2. Pressure plate; 3. Base; 4. Extension seat; 5. Pressure groove; 6. Baffle; 7. Insert plate; 8. Triangular groove; 9. Connecting plate; 10. Abutment plate; 11. Circular abutment groove; 12. Insertion port; 13. Positioning groove; 14. Cross groove; 15. Cylinder; 16. Positioning plate; 17. Cross plate; 18. Baffle groove; 19. Circular connecting groove; 20. Base plate; 21. Abutment groove; 22. Protruding plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit 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.

[0032] In the description of this invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.

[0035] Example 1

[0036] Please see Figures 1 to 6 This invention provides a technical solution: a high-strength cold-drawn flat steel, characterized in that it comprises:

[0037] Flat steel 1, the surface of flat steel 1 is provided with base 3 and extension seat 4, and the flat steel 1 is provided with pressure groove 5 and stop groove 18;

[0038] Pressure plate 2, the surface of pressure plate 2 is provided with baffle 6, and the surface of baffle 6 is provided with cylinder 15 and positioning plate 16, and the surface of positioning plate 16 is provided with cross plate 17; and

[0039] The connecting plate 9 has a backing plate 10 on its surface, a circular connecting groove 19 inside the connecting plate 9, and a circular backing groove 11 inside the backing plate 10.

[0040] The bottom end of the flat steel 1 is fixedly connected to the top end of the extension seat 4, and the bottom end of the flat steel 1 is fixedly connected to the top end of the base 3. The outer surface of the top of the base 3 is fixedly connected to the side surface of the extension seat 4. A base plate 20 is provided on the side surface of the bottom end of the base 3. The side surface of the bottom end of the base 3 is fixedly connected to the inner surface of the base plate 20. A pressure groove 5 is formed inside the top end of the flat steel 1, and a retaining groove 18 is formed inside the flat steel 1. A pressure plate 2 is provided on the inner surface of the pressure groove 5. The cross-sectional dimension of the pressure plate 2 is smaller than the cross-sectional dimension of the pressure groove 5. The bottom end of the pressure plate 2 abuts against the bottom surface of the pressure groove 5. A baffle is provided on the outer surface of the bottom end of the pressure plate 2. 6. The bottom outer surface of the pressure plate 2 is fixedly connected to the top of the baffle 6; the flat steel 1 is placed on the top surface of the building structure, and at the same time, the connecting plate 9 and the bottom plate 20 are inserted into the building. The pressure plate 2 is inserted into the pressure groove 5, and the baffle 6 is inserted into the baffle groove 18. Concrete is poured onto the pressure plate 2. The concrete fixes the flat steel 1 and the pressure plate 2. The pressure plate 2 realizes the function of limiting the flat steel 1, and the baffle 6 plays the role of blocking the flat steel 1. Compared with traditional bolts, the baffle 6 has greater rigidity and will not be damaged, thus ensuring the stability of the building structure.

[0041] Example 2

[0042] See attached document Figures 1 to 6Based on Embodiment 1, in order to achieve the effect of the abutment plate 10, the outer surface of the baffle 6 is provided with a plurality of cylinders 15, which are evenly distributed on both sides of the outer surface of the baffle 6. The cylinders 15 are semi-cylindrical, and their inner surfaces are fixedly connected to the outer surface of the baffle 6. The bottom end of the baffle 6 is provided with a positioning plate 16, which is rectangular. The top end of the positioning plate 16 is fixedly connected to the bottom end of the baffle 6. The outer surface of the bottom end of the positioning plate 16 is provided with a plurality of cross plates 17, which are evenly distributed on the outer surface of the bottom end of the positioning plate 16. The top outer surface of the cross plate 17 is fixedly connected to the bottom outer surface of the positioning plate 16. Multiple protruding plates 22 are provided on the outer surface of the cross plate 17, and these protruding plates 22 are evenly distributed around the perimeter of the outer surface of the cross plate 17. The inner surface of the protruding plates 22 is fixedly connected to the outer surface of the cross plate 17. The inner surface of the side end of the connecting plate 9 is fixedly connected to the outer surface of the side end of the base 3. A stop plate 10 is provided on the top outer surface of the connecting plate 9. The top outer surface of the connecting plate 9 is fixedly connected to the bottom end of the stop plate 10. Multiple circular grooves 11 are formed inside the stop plate 10, and grooves 21 are formed on the outside of the stop plate 10. The inner diameter of the circular groove 11 is larger than the diameter of the cylinder 15. The inner surface of the circular groove 11 and the outer surface of the cylinder 15 are slidably connected. A circular connecting groove 19 is provided inside the connecting plate 9, and the size of the circular connecting groove 19 is equal to the size of the circular groove 11. An insertion port 12 is provided inside the connecting plate 9, and the inner surface of the insertion port 12 is slidably connected to the outer surface of the baffle 6. Multiple insertion plates 7 are provided on the outer surface of the side end of the base 3, and the multiple insertion plates 7 are located at two positions above and below the outer surface of the side end of the base 3. The inner surface of the side end of the insertion plate 7 is fixedly connected to the outer surface of the side end of the base 3. The base 3 has multiple triangular grooves 8 evenly distributed inside the insert plate 7, and a base plate 20 is provided on the outer surface of the bottom end of the base 3. When the baffle 6 moves downward, the baffle 6 passes through the positioning groove 13, and the cylinder 15 on the baffle 6 passes through the circular abutment groove 11. The abutment plate 10 supports the baffle 6 and strengthens the limiting effect on the baffle 6, thereby increasing the rigidity of the baffle 6. The circular abutment groove 11 increases the contact area between the abutment plate 10 and the baffle 6. The cylinder 15 and the circular abutment groove 11 are connected in a limiting manner, which strengthens the stability of the baffle 6.

[0043] Example 3

[0044] See attached document Figures 1 to 6Based on Embodiment 2, in order to achieve the effect of the positioning plate 17, the inner surface of the side end of the base plate 20 and the outer surface of the side end of the base 3 are fixedly connected. A positioning groove 13 is provided inside the base plate 20, and a positioning plate 16 is provided on the inner surface of the positioning groove 13. The cross-sectional dimension of the positioning groove 13 is larger than the cross-sectional dimension of the positioning plate 16. The inner surface of the positioning groove 13 and the outer surface of the positioning plate 16 abut against each other. A plurality of cross grooves 14 are provided on the bottom surface of the positioning groove 13. A cross plate 17 is provided on the inner surface of the cross groove 14. The cross-sectional dimension of the cross groove 14 is larger than that of the cross plate 17. The cross-sectional dimensions are 17. The bottom surface of the cross groove 14 abuts against the bottom end of the cross plate 17, and multiple cross grooves 14 are evenly distributed on the bottom surface of the positioning groove 13. The bottom end of the cross groove 14 and the bottom surface of the positioning groove 13 are fixedly connected. When the baffle 6 reaches the base plate 20, the positioning plate 16 on the baffle 6 is inserted into the positioning groove 13, and the cross plate 17 is inserted into the cross groove 14. The positioning plate 16 realizes the positioning function of the bottom end of the baffle 6, the cross plate 17 enhances the stability of the positioning plate 16, and the protruding plate 22 enhances the positioning function of the cross plate 17.

[0045] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A high strength cold rolled steel strip characterised in that: Include: Flat steel (1), the flat steel (1) surface is equipped with base (3) and extension seat (4), the flat steel (1) is equipped with pressure groove (5) and blocking groove (18) in; The pressing plate (2) is equipped with a baffle (6) on the surface, and the baffle (6) is equipped with a cylinder (15) and a positioning plate (16) on the surface, and the positioning plate (16) is equipped with a cross plate (17) on the surface. And the bottom end of the positioning plate (16) is equipped with a plurality of convex plates (22), and the plurality of convex plates (22) are evenly distributed around the outer surface of the cross plate (17), and the inner surface of the convex plate (22) and the outer surface of the cross plate (17) are fixedly connected. The connecting plate (9) is equipped with a resisting plate (10) on the surface, and the connecting plate (9) is equipped with a circular connecting groove (19) in the inside, and the resisting plate (10) is equipped with a circular resisting groove (11) in the inside. The bottom end of the flat steel (1) and the top end of the extension seat (4) are fixedly connected, the bottom end of the flat steel (1) and the top end of the base (3) are fixedly connected, and the outer surface of the top of the base (3) and the side surface of the extension seat (4) are fixedly connected. The side surface of the bottom end of the base (3) is equipped with a bottom plate (20), the side surface of the bottom end of the base (3) and the inner surface of the bottom plate (20) are fixedly connected, and the inside of the top end of the flat steel (1) is equipped with a pressure groove (5), the inside of the flat steel (1) is equipped with a blocking groove (18), and the inner surface of the pressure groove (5) is equipped with a pressing plate (2). The cross-sectional size of the pressing plate (2) is smaller than the cross-sectional size of the pressure groove (5), the bottom end of the pressing plate (2) abuts the bottom surface of the pressure groove (5), the outer surface of the bottom end of the pressing plate (2) is equipped with a baffle (6), and the outer surface of the bottom end of the pressing plate (2) and the top end of the baffle (6) are fixedly connected. The outer surface of the baffle (6) is equipped with a plurality of cylinders (15), and the plurality of cylinders (15) are evenly distributed on both sides of the outer surface of the baffle (6), the cylinder (15) is in the shape of a semi-cylinder, the inner surface of the cylinder (15) and the outer surface of the baffle (6) are fixedly connected, and the bottom end of the baffle (6) is equipped with a positioning plate (16). The positioning plate (16) is in the shape of a rectangle, the top end of the positioning plate (16) and the bottom end of the baffle (6) are fixedly connected, the outer surface of the bottom end of the positioning plate (16) is equipped with a plurality of cross plates (17), and the plurality of cross plates (17) are evenly distributed on the outer surface of the bottom end of the positioning plate (16). The outer surface of the cross plate (17) is equipped with a plurality of convex plates (22), and the plurality of convex plates (22) are evenly distributed around the outer surface of the cross plate (17), the inner surface of the convex plate (22) and the outer surface of the cross plate (17) are fixedly connected.

2. A high strength cold rolled steel strip as claimed in claim 1, wherein: The inner surface of the side end of the connecting plate (9) and the outer surface of the side end of the base (3) are fixedly connected, the outer surface of the top of the connecting plate (9) is equipped with a resisting plate (10), the outer surface of the top of the connecting plate (9) and the bottom end of the resisting plate (10) are fixedly connected, and the resisting plate (10) is equipped with a plurality of circular resisting grooves (11) in the inside. The outer part of the resisting plate (10) is equipped with a resisting groove (21), the inner diameter of the circular resisting groove (11) is larger than the diameter of the cylinder (15), the inner surface of the circular resisting groove (11) and the outer surface of the cylinder (15) are slidingly connected, and the inside of the connecting plate (9) is equipped with a circular connecting groove (19), and the size of the circular connecting groove (19) is equal to the size of the circular resisting groove (11). The inside of the connecting plate (9) is equipped with a socket (12), and the inner surface of the socket (12) and the outer surface of the baffle (6) are slidingly connected.

3. A high strength cold rolled steel flat according to claim 2, characterized in that: The outer surface of the side end of the base (3) is provided with a plurality of plug plates (7), and the plurality of plug plates (7) are located on the upper and lower parts of the outer surface of the side end of the base (3). The inner surface of the side end of the plug plate (7) is fixedly connected with the outer surface of the side end of the base (3). A plurality of triangular grooves (8) are formed in the plug plate (7), and the plurality of triangular grooves (8) are uniformly distributed in the plug plate (7). The outer surface of the bottom end of the base (3) is provided with a bottom plate (20).

4. A high strength cold rolled steel flat according to claim 3, characterized in that: The inner surface of the side end of the bottom plate (20) is fixedly connected with the outer surface of the side end of the base (3). The inner part of the bottom plate (20) is provided with a positioning groove (13). The inner surface of the positioning groove (13) is provided with a positioning plate (16). The cross-sectional size of the positioning groove (13) is larger than that of the positioning plate (16). The inner surface of the positioning groove (13) is in abutment with the outer surface of the positioning plate (16). The bottom surface of the positioning groove (13) is provided with a plurality of cross grooves (14).

5. A high strength cold rolled steel strip as claimed in claim 4, wherein: The inner surface of the cross groove (14) is provided with a cross plate (17). The cross-sectional size of the cross groove (14) is larger than that of the cross plate (17). The bottom surface of the cross groove (14) is in abutment with the bottom end of the cross plate (17). The plurality of cross grooves (14) are uniformly distributed on the bottom surface of the positioning groove (13). The bottom end of the cross groove (14) is fixedly connected with the bottom surface of the positioning groove (13).

6. A process for producing a high-strength cold-rolled steel sheet, for producing the high-strength cold-rolled steel sheet according to claim 5, characterized by, The preparation process comprises the following steps: Step one: installation, the flat steel (1) is placed on the top surface of the building structure, at the same time, the connecting plate (9) and the bottom plate (20) are inserted into the building, the pressing plate (2) is inserted into the pressing groove (5), the baffle (6) is inserted into the blocking groove (18), the concrete is poured on the pressing plate (2), the concrete fixes the flat steel (1) and the pressing plate (2), the pressing plate (2) realizes the limiting effect of the flat steel (1), the baffle (6) has the blocking effect of the flat steel (1), compared with the traditional bolt, the rigidity of the baffle (6) is larger, and the baffle (6) will not be damaged, so that the stability of the building structure is ensured; Step two: limiting, when the baffle (6) moves downward, the baffle (6) passes through the positioning groove (13), the cylinder (15) on the baffle (6) passes through the circular abutting groove (11), and the abutting plate (10) realizes the top-holding of the baffle (6), the abutting plate (10) strengthens the limiting effect of the baffle (6), so that the rigidity of the baffle (6) is strengthened, the circular abutting groove (11) increases the contact area of the abutting plate (10) and the baffle (6), the cylinder (15) and the circular abutting groove (11) are limitedly connected, and the stability of the baffle (6) is strengthened; Step three: positioning, when the baffle (6) reaches the bottom plate (20), the positioning plate (16) on the baffle (6) is inserted into the positioning groove (13), and the cross plate (17) is inserted into the cross groove (14). The positioning plate (16) realizes the positioning effect of the bottom end of the baffle (6). The cross plate (17) strengthens the stability of the positioning plate (16). The convex plate (22) strengthens the positioning effect of the cross plate (17).

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