Prefabricated building connecting structure and connecting and fixing method thereof

Abstract

The application discloses an assembled building connecting structure and a connecting and fixing method thereof, wherein the connecting structure comprises vertical section steel, corner connecting steel, angle adjusting assembly and horizontal section steel; the vertical section steel comprises a first steel body, load bearing plates fixed vertically on both sides of the first steel body, and a positioning column fixedly connected to the top of the load bearing plates; the corner connecting steel is arranged on the top of the load bearing plates and connected with the positioning column and the first steel body; the angle adjusting assembly is connected with one end of the corner connecting steel away from the first steel body; and the horizontal section steel is connected with one end of the angle adjusting assembly away from the corner connecting steel. The application has the advantages of simple operation, good connecting strength between corners, and the capability of adjusting the angle of the corner connecting steel according to requirements, so that the corner connecting steel and the horizontal section steel can be vertically assembled together with the vertical section steel.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building technology, and in particular to a prefabricated building connection structure and its connection and fixing method. Background Technology

[0002] Prefabricated construction refers to a construction method in which some or all of the building components are manufactured in a component prefabrication factory, then transported to the construction site by appropriate transportation methods, and the components are assembled using reliable installation methods and installation machinery to become a building with usable functions.

[0003] Prefabricated steel structure buildings and prefabricated reinforced concrete buildings. Among them, steel structure houses are the most widely used type of prefabricated steel structure building. Light steel structure houses are mainly made of light steel keel synthesized by cold rolling technology from hot-dip galvanized steel strips. Through precise calculations and the support and combination of auxiliary components, they achieve reasonable load-bearing capacity, thus replacing traditional houses.

[0004] However, in the construction of existing steel structure buildings, workers often use direct fixing, which results in poor connection strength between corners and easily leads to problems such as insufficient perpendicularity of the angles. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a prefabricated building connection structure and its connection and fixing method, mainly comprising:

[0007] The vertical steel section includes a first steel body, a bearing plate fixed perpendicularly to both sides of the first steel body, and a positioning column fixedly connected to the top of the bearing plate;

[0008] A corner connecting steel is provided on the top of the bearing plate and is connected to the positioning column and the first steel body;

[0009] An angle adjustment component is connected to the end of the corner connecting steel that is away from the first steel body;

[0010] A transverse steel section is connected to the end of the angle adjustment assembly away from the corner connecting steel section.

[0011] As a preferred embodiment of the prefabricated building connection structure of the present invention, one end of the corner connecting steel is fixedly connected to the first steel body, a positioning hole is provided at the bottom of the corner connecting steel, and the positioning column is adapted to engage with the positioning hole.

[0012] As a preferred embodiment of the prefabricated building connection structure of the present invention, the angle adjustment component includes an intermediate component, a pair of connectors rotatably connected to both ends of the intermediate component, and a pair of fixing components respectively disposed on the front and rear sides of the pair of connectors.

[0013] The pair of connectors and the pair of fasteners are symmetrically arranged, and the fasteners are connected to the connectors and the intermediate components.

[0014] As a preferred embodiment of the prefabricated building connection structure of the present invention, the intermediate component includes an intermediate plate, both ends of the intermediate plate are arc-shaped structures, a pair of fixed columns are fixedly connected to the front and rear sides of the intermediate plate, a guide plate is fixedly connected to the end of the fixed column away from the intermediate plate, both ends of the intermediate plate are rotatably connected to a connector, and the front and rear sides of the intermediate plate are fixedly connected to the fixing components.

[0015] As a preferred embodiment of the prefabricated building connection structure of the present invention, the connector includes a U-shaped channel plate rotatably connected to the intermediate plate via a rotating shaft and a pair of locking plates fixedly connected to one end of the U-shaped channel plate away from the intermediate plate. The distance between the pair of locking plates is consistent with the height of the corner connecting steel and the transverse steel. The pair of locking plates are fixedly connected to the upper and lower sides of the corner connecting steel and the transverse steel, respectively. The front and rear sides of the U-shaped channel plate are provided with arc-shaped grooves. The center of the arc-shaped groove is on the same central axis as the rotating shaft. The fixed column is slidably inserted through the arc-shaped groove.

[0016] As a preferred embodiment of the prefabricated building connection structure of the present invention, the fastener includes a fixing plate fixedly connected to the intermediate plate, a stabilizing structure fixedly connected to the side of the fixing plate away from the intermediate plate, and a pair of fixing structures symmetrically arranged on the left and right sides of the fixing plate. The stabilizing structure is connected to the pair of fixing structures, and the pair of fixing structures are respectively connected to a pair of U-shaped groove plates.

[0017] As a preferred embodiment of the prefabricated building connection structure of the present invention, the fixing structure includes: an arc-shaped plate fixedly connected to the U-shaped channel plate, a fixing sleeve fixedly connected to the fixing plate, a spring fixedly connected to the inner bottom wall of the fixing sleeve, a telescopic rod slidably connected to the inside of the fixing sleeve, a connecting plate fixedly connected to the outer end of the telescopic rod, and a pair of insert rods fixedly connected to the end of the connecting plate away from the telescopic rod. The arc-shaped plate has a plurality of insertion holes arranged in an arc-shaped array. The inner end of the telescopic rod is fixedly connected to the spring. The included angle between the pair of insert rods is an acute angle, and both are adapted to be inserted into the insertion holes. The side of the fixing sleeve away from the U-shaped channel plate has a movable groove communicating with the inside of the fixing sleeve. A movable rod slides through the movable groove, and the inner end of the movable rod is fixedly connected to the insert rods.

[0018] As a preferred embodiment of the prefabricated building connection structure of the present invention, the center of the arc-shaped plate is on the same central axis as the rotating shaft, and the inner side of the arc-shaped plate is in movable contact with the side of the guide plate.

[0019] As a preferred embodiment of the prefabricated building connection structure of the present invention, the stabilizing structure includes a connecting rod fixedly connected to a fixed plate, a threaded rod fixedly connected to one end of the connecting rod away from the fixed plate, the threaded rod slidingly passing through a pair of movable rods, and a pair of nuts spirally sleeved on the threaded rod between the pair of movable rods, the pair of nuts respectively abutting against the pair of movable rods.

[0020] The connection and fixing method using the prefabricated building connection structure described above includes the following steps:

[0021] Step 1: First, adjust the angle of the corner connecting steel according to the position of the vertical steel section to ensure that the bottom of the corner connecting steel is parallel to the bearing plate and perpendicular to the first steel body;

[0022] Step 2: When adjusting the angle of the corner connecting steel, first rotate the nut away from the moving rod, and then move the telescopic rod into the fixed sleeve through the moving rod. The spring is compressed, and the telescopic rod drives the insert rod to move backward through the connecting plate, and separates the insert rod from the arc plate, which is used to release the fixed relationship between the fixing part and the connecting part.

[0023] Step 3: Then, the U-shaped channel plate drives the corner connecting steel to rotate, so that the corner connecting steel can be parallel to the bearing plate and perpendicular to the first steel body. Then, the positioning hole on the corner connecting steel is engaged with the positioning post on the bearing plate. Then, one end of the corner connecting steel is fixedly connected to the first steel body with bolts. Through the insertion action of the positioning post and the positioning hole, the corner connecting steel can be quickly positioned, improving assembly efficiency. Through the supporting action of the bearing plate, the connection strength between the corner connecting steel and the first steel body is improved.

[0024] Step 4: Fix the angle of the corner connecting steel. When fixing, release the pulling force of the moving rod. The telescopic rod will return to its original position under the action of the spring's rebound force. The telescopic rod pushes the insert rod forward through the connecting plate and engages with the corresponding insert hole to prevent the U-shaped channel plate from rotating spontaneously.

[0025] Step 5: Finally, rotate the nut to make it abut against the moving rod to prevent the moving rod from moving backward, thereby further preventing the U-shaped channel plate from rotating spontaneously.

[0026] The beneficial effects of this invention are:

[0027] 1. In this invention, the corner connecting steel is quickly positioned and installed on the bearing plate through the insertion of the positioning post and the positioning hole, and then fixed by bolts. It has the characteristics of simple operation and good connection strength between corners.

[0028] 2. In this invention, by setting an angle adjustment component, the angle of the corner connecting steel can be adjusted as needed, so that the corner connecting steel, as well as the horizontal and vertical steel sections, can be assembled together vertically. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0031] Figure 2 This is a schematic diagram of the vertical steel section of the present invention.

[0032] Figure 3 This is a schematic diagram of the corner connecting steel of the present invention.

[0033] Figure 4 This is a schematic diagram of the angle adjustment component of the present invention.

[0034] Figure 5 This is a schematic diagram of the structure of the middleware of the present invention.

[0035] Figure 6 This is a schematic diagram of the connector of the present invention.

[0036] Figure 7 This is a structural schematic diagram of the fastener of the present invention.

[0037] Figure 8 This is a schematic diagram of the fixed structure of the present invention.

[0038] Figure 9 This is a schematic diagram of the stable structure of the present invention.

[0039] In the diagram: 100, vertical steel section; 101, first steel body; 102, bearing plate; 103, positioning post; 200, corner connecting steel; 201, positioning hole; 300, angle adjustment assembly; 301, intermediate component; 301-1, intermediate plate; 301-2, fixing post; 301-3, guide plate; 302, connector; 302-1, U-shaped channel plate; 302-2, locking plate; 302-3, arc groove; 303, fixing component; 303-1, fixing. Plate; 303-2, Stable structure; 303-21, Connecting rod; 303-22, Screw rod; 303-23, Nut; 303-3, Fixed structure; 303-31, Curved plate; 303-32, Fixing sleeve; 303-33, Spring; 303-34, Telescopic rod; 303-35, Connecting plate; 303-36, Insert rod; 303-37, Insertion hole; 303-38, Moving slot; 303-39, Moving rod; 400, Horizontal steel section. Detailed Implementation

[0040] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0043] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0044] Example 1

[0045] Reference Figure 1-8 This is the first embodiment of the present invention, which provides a prefabricated building connection structure, mainly comprising:

[0046] Vertical steel section 100, such as Figure 2 The vertical steel section 100 includes a first steel body 101, a bearing plate 102 that is vertically fixed to both sides of the first steel body 101, and a positioning column 103 that is fixedly connected to the top of the bearing plate 102.

[0047] An angle connecting steel 200 is provided on the top of the bearing plate 102 and is connected to the positioning column 103 and the first steel body 101.

[0048] Angle adjustment component 300 is connected to the end of corner connecting steel 200 away from the first steel body 101;

[0049] The transverse steel section 400 is connected to the end of the angle adjustment component 300 away from the corner connecting steel 200.

[0050] Specifically, such as Figure 3 One end of the corner connecting steel 200 is fixedly connected to the first steel body 101 by bolts. The bottom of the corner connecting steel 200 is provided with a positioning hole 201. The positioning post 103 is adapted to engage with the positioning hole 201. Through the engagement of the positioning post 103 with the positioning hole 201, and through the support of the bearing plate 102 on the corner connecting steel 200, the connection strength between the corner connecting steel 200 and the first steel body 101 can be strengthened, that is, the connection strength between the corners is good.

[0051] Specifically, such as Figure 4 The angle adjustment component 300 includes an intermediate component 301, a pair of connectors 302 rotatably connected to both ends of the intermediate component 301, and a pair of fixing components 303 respectively disposed on the front and rear sides of the pair of connectors 302.

[0052] A pair of connectors 302 and a pair of fasteners 303 are symmetrically arranged, and the fasteners 303 are connected to the connectors 302 and the intermediate member 301.

[0053] Furthermore, such as Figure 5-8 The intermediate component 301 includes an intermediate plate 301-1. Both ends of the intermediate plate 301-1 are arc-shaped structures. A pair of fixing posts 301-2 are welded and fixed on the front and rear sides of the intermediate plate 301-1. A guide plate 301-3 is fixed on the end of the fixing post 301-2 away from the intermediate plate 301-1. Both ends of the intermediate plate 301-1 are rotatably connected to a connecting member 302. The front and rear sides of the intermediate plate 301-1 are fixedly connected to the fixing member 303.

[0054] The connector 302 includes a U-shaped channel plate 302-1 rotatably connected to the intermediate plate 301-1 via a rotating shaft, and a pair of locking plates 302-2 fixedly connected to the end of the U-shaped channel plate 302-1 away from the intermediate plate 301-1. The U-shaped channel plate 302-1 and the pair of locking plates 302-2 are integrally connected, which is convenient for manufacturing and has good strength. The distance between the pair of locking plates 302-2 is related to the height of the corner connecting steel 200 and the transverse steel 400. The alignment allows the corner connecting steel 200 and the transverse steel 400 to be engaged with a pair of locking plates 302-2. The pair of locking plates 302-2 are respectively fixed to the upper and lower sides of the corner connecting steel 200 and the transverse steel 400 by bolts. The front and rear sides of the U-shaped channel plate 302-1 are provided with arc-shaped grooves 302-3. The center of the arc-shaped grooves 302-3 is on the same central axis as the rotating shaft. The fixing column 301-2 is slidably inserted through the arc-shaped grooves 302-3.

[0055] The fastener 303 includes a fixing plate 303-1 that is welded and fixed to the intermediate plate 301-1, and a pair of fixing structures 303-3 symmetrically arranged on the left and right sides of the fixing plate 303-1. The stabilizing structure 303-2 is connected to the pair of fixing structures 303-3, and the pair of fixing structures 303-3 are respectively connected to a pair of U-shaped groove plates 302-1.

[0056] The fixed structure 303-3 includes an arc-shaped plate 303-31 welded and fixed to the U-shaped channel plate 302-1, a fixing sleeve 303-32 welded and fixed to the fixing plate 303-1, a spring 303-33 bonded and fixed to the inner bottom wall of the fixing sleeve 303-32, a telescopic rod 303-34 slidably connected to the inside of the fixing sleeve 303-32, a connecting plate 303-35 welded and fixed to the outer end of the telescopic rod 303-34, and a connecting plate 303-35. -35 A pair of insert rods 303-36 are welded and fixed at one end away from the telescopic rod 303-34. Several insertion holes 303-37 are arranged in an arc-shaped array on the arc-shaped plate 303-31. The inner end of the telescopic rod 303-34 is fixedly connected to the spring 303-33. The included angle between the pair of insert rods 303-36 is acute, and both are fitted into the insertion holes 303-37. Through the insertion of the insert rods 303-36 into the insertion holes 303-37, it is used to... The U-shaped channel plate 302-1 is fixedly connected to the intermediate plate 301-1 to prevent the U-shaped channel plate 302-1 from causing the corner connecting steel 200 to rotate spontaneously. The fixed sleeve 303-32 has a movable groove 303-38 on the side away from the U-shaped channel plate 302-1, which is connected to the inside of the fixed sleeve 303-32. A movable rod 303-39 slides through the movable groove 303-38, and the inner end of the movable rod 303-39 is welded to the insertion rod 303-36. When it is necessary to release the fixation of the U-shaped channel plate 302-1, the telescopic rod 303-34 is moved into the fixed sleeve 303-32 by the moving rod 303-39. The telescopic rod 303-34 drives the insertion rod 303-36 to retract through the connecting plate 303-35, so that the insertion rod 303-36 is separated from the insertion hole 303-37. After separation, the angle of the corner connecting steel 200 can be adjusted by the U-shaped channel plate 302-1.

[0057] The center of the arc plate 303-31 is on the same central axis as the rotating shaft, and the inner side of the arc plate 303-31 is in contact with the side of the guide plate 301-3. The purpose of this arrangement is to allow the U-shaped groove plate 302-1 to rotate stably.

[0058] Example 2

[0059] Reference Figure 7 and Figure 9This is the second embodiment of the present invention. This embodiment differs from the first embodiment in that the fixing member 303 further includes a stabilizing structure 303-2 fixedly connected to the side of the fixing plate 303-1 away from the intermediate plate 301-1. The stabilizing structure 303-2 includes a connecting rod 303-21 fixedly connected to the fixing plate 303-1. A lead screw 303-22 is fixedly connected to one end of the connecting rod 303-21 away from the fixing plate 303-1. The lead screw 303-22 slides through a pair of moving rods 303-39. A pair of nuts 303-23 ​​are spirally sleeved on the lead screw 303-22 between the pair of moving rods 303-39. The pair of nuts 303-23 ​​abut against the pair of moving rods 303-39 respectively, improving the stability of the moving rods 303-39 and making them less prone to backward movement. This ensures that the insertion rod 303-36 and the insertion hole 303-37 are stably engaged, thereby preventing the U-shaped groove plate 302-1 from rotating spontaneously.

[0060] The remaining structure is the same as that in Example 1.

[0061] The connection and fixing method of the above-mentioned prefabricated building connection structure is as follows: First, adjust the angle of the corner connecting steel 200 according to the position of the vertical steel 100 to ensure that the bottom of the corner connecting steel 200 is parallel to the bearing plate 102 and perpendicular to the first steel body 101; when adjusting the angle of the corner connecting steel 200, first rotate the nut 303-23 ​​to move it away from the moving rod 303-39, and then drive the telescopic rod 303-34 to move into the fixed sleeve 303-32 through the moving rod 303-39, and the spring 30 3-33 is compressed, and the telescopic rod 303-34 drives the insertion rod 303-36 to retract through the connecting plate 303-35, thus separating the insertion rod 303-36 from the arc plate 303-31, thereby releasing the fixed relationship between the fixing member 303 and the connecting member 302; then, the U-shaped channel plate 302-1 drives the corner connecting steel 200 to rotate, so that the corner connecting steel 200 can remain parallel to the bearing plate 102 and perpendicular to the first steel body 101, and then the positioning hole 201 on the corner connecting steel 200 is closed. The corner connecting steel 200 is engaged with the positioning post 103 on the bearing plate 102, and then one end of the corner connecting steel 200 is fixedly connected to the first steel body 101 by bolts. The positioning post 103 and the positioning hole 201 allow for quick positioning of the corner connecting steel 200, improving assembly efficiency. The bearing plate 102 provides support, enhancing the connection strength between the corner connecting steel 200 and the first steel body 101. The angle of the corner connecting steel 200 is fixed by loosening the moving rod 303 during fixing. The tension of 39 causes the telescopic rod 303-34 to reset under the restoring force of the spring 303-33. The telescopic rod 303-34 pushes the insertion rod 303-36 forward through the connecting plate 303-35 and engages with the corresponding insertion hole 303-37 to prevent the U-shaped groove plate 302-1 from rotating spontaneously. Finally, the nut 303-23 ​​is rotated to abut against the moving rod 303-39 to prevent the moving rod 303-39 from retracting, thereby further preventing the U-shaped groove plate 302-1 from rotating spontaneously.

[0062] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A prefabricated building connection structure, characterized in that, include: The vertical steel section (100) includes a first steel body (101), a bearing plate (102) vertically fixed to both sides of the first steel body (101), and a positioning column (103) fixedly connected to the top of the bearing plate (102). An angle connecting steel (200) is provided on the top of the bearing plate (102) and is connected to the positioning column (103) and the first steel body (101); An angle adjustment assembly (300) is connected to the end of the corner connecting steel (200) away from the first steel body (101); A transverse steel section (400) is connected to the end of the angle adjustment assembly (300) away from the corner connecting steel section (200); The angle adjustment assembly (300) includes an intermediate part (301), a pair of connectors (302) rotatably connected to both ends of the intermediate part (301), and a pair of fixing parts (303) respectively disposed on the front and rear sides of the pair of connectors (302). The pair of connectors (302) and the pair of fasteners (303) are symmetrically arranged, and the fasteners (303) are connected to the connectors (302) and the intermediate member (301); The intermediate component (301) includes an intermediate plate (301-1), both ends of which are arc-shaped structures. A pair of fixing posts (301-2) are fixedly connected to the front and rear sides of the intermediate plate (301-1). A guide plate (301-3) is fixedly connected to the end of the fixing post (301-2) away from the intermediate plate (301-1). Both ends of the intermediate plate (301-1) are rotatably connected to a connector (302). The front and rear sides of the intermediate plate (301-1) are fixedly connected to a fixing member (303). The fastener (303) includes a fixed plate (303-1) fixedly connected to the intermediate plate (301-1), a stabilizing structure (303-2) fixedly connected to the side of the fixed plate (303-1) away from the intermediate plate (301-1), and a pair of fixed structures (303-3) symmetrically arranged on the left and right sides of the fixed plate (303-1). The stabilizing structure (303-2) is connected to the pair of fixed structures (303-3), and the pair of fixed structures (303-3) are respectively connected to a pair of U-shaped groove plates (302-1).

2. The prefabricated building connection structure as described in claim 1, characterized in that: One end of the corner connecting steel (200) is fixedly connected to the first steel body (101), and a positioning hole (201) is provided at the bottom of the corner connecting steel (200). The positioning post (103) is adapted to engage with the positioning hole (201).

3. The prefabricated building connection structure as described in claim 1, characterized in that: The connector (302) includes a U-shaped channel plate (302-1) rotatably connected to the intermediate plate (301-1) via a rotating shaft, and a pair of locking plates (302-2) fixedly connected to one end of the U-shaped channel plate (302-1) away from the intermediate plate (301-1). The distance between the pair of locking plates (302-2) is consistent with the height of the corner connecting steel (200) and the transverse steel (400). The pair of locking plates (302-2) are fixedly connected to the upper and lower sides of the corner connecting steel (200) and the transverse steel (400) respectively. The front and rear sides of the U-shaped channel plate (302-1) are provided with arc-shaped grooves (302-3). The center of the arc-shaped grooves (302-3) is on the same central axis as the rotating shaft. The fixing column (301-2) is slidably inserted through the arc-shaped grooves (302-3).

4. The prefabricated building connection structure as described in claim 1, characterized in that: The fixing structure (303-3) includes an arc-shaped plate (303-31) fixedly connected to the U-shaped channel plate (302-1), a fixing sleeve (303-32) fixedly connected to the fixing plate (303-1), a spring (303-33) fixedly connected to the inner bottom wall of the fixing sleeve (303-32), a telescopic rod (303-34) slidably connected to the inside of the fixing sleeve (303-32), a connecting plate (303-35) fixedly connected to the outer end of the telescopic rod (303-34), and a pair of inserts (303-36) fixedly connected to the end of the connecting plate (303-35) away from the telescopic rod (303-34). -31) has several insertion holes (303-37) arranged in an arc shape. The inner end of the telescopic rod (303-34) is fixedly connected to the spring (303-33). The included angle between a pair of insertion rods (303-36) is an acute angle, and both are adapted to be inserted into the insertion holes (303-37). The fixed sleeve (303-32) has a moving groove (303-38) on the side away from the U-shaped groove plate (302-1) that communicates with the inside of the fixed sleeve (303-32). A moving rod (303-39) slides through the moving groove (303-38), and the inner end of the moving rod (303-39) is fixedly connected to the insertion rod (303-36).

5. The prefabricated building connection structure as described in claim 4, characterized in that: The center of the arc plate (303-31) is on the same central axis as the rotating shaft, and the inner side of the arc plate (303-31) is in movable contact with the side of the guide plate (301-3).

6. The prefabricated building connection structure as described in claim 1, characterized in that: The stabilizing structure (303-2) includes a connecting rod (303-21) fixedly connected to the fixed plate (303-1). The end of the connecting rod (303-21) away from the fixed plate (303-1) is fixedly connected to a lead screw (303-22). The lead screw (303-22) is slidably connected through a pair of movable rods (303-39). A pair of nuts (303-23) are screwed on the lead screw (303-22) between the pair of movable rods (303-39). The pair of nuts (303-23) respectively abut against the pair of movable rods (303-39).

7. The connection and fixing method for prefabricated building connection structures as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: First, adjust the angle of the corner connecting steel (200) according to the position of the vertical steel (100) to ensure that the bottom of the corner connecting steel (200) is parallel to the bearing plate (102) and perpendicular to the first steel body (101); Step 2: When adjusting the angle of the corner connecting steel (200), first rotate the nut (303-23) to move it away from the moving rod (303-39), and then drive the telescopic rod (303-34) to move into the fixed sleeve (303-32) through the moving rod (303-39). The spring (303-33) is compressed, and the telescopic rod (303-34) drives the insert rod (303-36) to retract through the connecting plate (303-35), and separates the insert rod (303-36) from the arc plate (303-31) to release the fixed relationship between the fixing part (303) and the connecting part (302). Step 3: Then, the U-shaped channel plate (302-1) drives the corner connecting steel (200) to rotate, so that the corner connecting steel (200) can be parallel to the bearing plate (102) and perpendicular to the first steel body (101). Then, the positioning hole (201) on the corner connecting steel (200) is engaged with the positioning post (103) on the bearing plate (102). Then, one end of the corner connecting steel (200) is fixedly connected to the first steel body (101) by bolts. Through the insertion action of the positioning post (103) and the positioning hole (201), the corner connecting steel (200) can be quickly positioned, improving the assembly efficiency. Through the supporting action of the bearing plate (102), the connection strength between the corner connecting steel (200) and the first steel body (101) is improved. Step 4: Fix the angle of the corner connecting steel (200). When fixing, release the pulling force of the moving rod (303-39). The telescopic rod (303-34) will reset under the action of the spring (303-33). The telescopic rod (303-34) pushes the insertion rod (303-36) forward through the connecting plate (303-35) and engages with the corresponding insertion hole (303-37) to prevent the U-shaped channel plate (302-1) from rotating spontaneously. Step 5: Finally, rotate the nut (303-23) to make it abut against the moving rod (303-39) to prevent the moving rod (303-39) from moving backward, thereby further preventing the U-shaped channel plate (302-1) from rotating spontaneously.

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