Connecting device for fabricated building and construction method of connecting device

Abstract

The invention discloses a connecting device for a fabricated building and a construction method thereof, and relates to the technical field of building structure connecting equipment.The connecting device comprises a connecting base body and a connecting plate arranged on the surface of the connecting base body, the connecting plate is provided with four symmetrically-distributed adjusting grooves, and the connecting plate is provided with a corner fixing mechanism used for fixing a square pipe to be connected; four groups of adjusting parts which are symmetrically distributed are arranged on the connecting plate, the adjusting parts are used for adjusting the distance between the corner fixing mechanisms, and surface fixing mechanisms used for fixing square pipes to be connected are arranged between the corner fixing mechanisms. According to the device, the surface fixing mechanisms are arranged, so that the device can be used for connecting and fixing the surfaces of the square pipes to be connected, and meanwhile, the connecting and fixing of the surfaces of the square pipes through the surface fixing mechanisms is matched with the connecting and fixing of corners of the square pipes through the corner fixing mechanisms, so that the connecting and fixing effect of the device on the square pipes to be connected is greatly improved; therefore, the situation of loosening or even separation in the subsequent use process is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structure connecting device, and particularly relates to a connecting device for fabricated building and a construction method thereof. BACKGROUND

[0002] In the process of transformation of the construction industry towards industrialization and greenization, fabricated building has become an important direction to promote the upgrading of the building industry due to its high construction efficiency, energy saving and environmental protection and other advantages. The performance of the connecting device as the core component of the fabricated building directly determines the integrity, stability and safety of the building structure. In the fabricated building, square tubes are widely used in building frames, support structures and other parts due to their high strength and easy processing. Reliable connection between square tubes is the key to ensuring the stability of the fabricated building structure.

[0003] At present, the common connecting device for fabricated building square tubes on the market has many deficiencies. Traditional connecting methods mostly use bolt connection and welding. Although bolt connection is convenient to install, it is easy to loosen in the long-term use process due to the influence of building structure vibration, load change and other factors, which leads to the decrease of the stability of the square tube connection part. Although the welding method can provide high connection strength, it has high technical requirements for construction personnel, and the high temperature generated in the welding process easily affects the material performance of the square tube. At the same time, the welding quality is difficult to guarantee, and problems such as virtual welding and welding through are easy to occur, which leads to unstable connection of the square tube. In addition, most of the existing connecting devices only focus on the fixation of one aspect of the square tube, such as connecting only the surface of the tube body or fixing only the corner of the square tube, and cannot realize stable connection in all directions and multiple levels. This single fixation method makes the square tube prone to local overloading when subjected to complex external forces, which further leads to loosening or even separation of the connection part, seriously threatening the structural safety of the fabricated building. Therefore, it is urgent to improve. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a connecting device for fabricated building and a construction method thereof, which solves the above technical problems.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions: The utility model provides a connecting device for fabricated building, connecting base body, connecting base body is regular hexahedron, and each surface of connecting base body is equipped with multiple groups of evenly distributed thread hole, the surface of connecting base body is provided with connecting plate, connecting plate is detachable fixed connection with connecting base body through thread hole, four symmetrical distribution adjusting grooves are formed in the connecting plate, four groups of symmetrical distribution fixed angle mechanism are arranged on the connecting plate, and the fixed angle mechanism is used for fixing the square tube to be connected, four groups of symmetrical distribution adjusting parts are arranged on the connecting plate, and the adjusting part is used for adjusting the spacing between each fixed angle mechanism, and the fixed surface mechanism for fixing the square tube to be connected is arranged between each group of fixed angle mechanism.

[0006] Preferably, the fixed angle mechanism comprises: The closed carrier plate is arranged on the surface of the connecting plate away from the connecting base, and the length of the closed carrier plate is greater than the length of the adjusting groove. The first fixed angle plate is fixedly arranged on the closed carrier plate, the first fixed angle plate is L-shaped, and sliding grooves are formed in the opposite surfaces of each first fixed angle plate. The extension part is arranged on the surface of each first fixed angle plate away from the connecting plate.

[0007] Preferably, the extension part comprises: The fixed column is fixedly arranged on the surface of the first fixed angle plate away from the connecting plate, and two built-in grooves are formed in the fixed column. The built-in spring is arranged in the built-in groove, and the built-in spring is always in a compressed state. The clamping ball is slidably arranged in the built-in groove. The second fixed angle plate is arranged on the fixed column, and sliding grooves are also formed in the opposite surfaces of each second fixed angle plate, and the second fixed angle plate is attached to the first fixed angle plate in the initial state.

[0008] Preferably, a column groove is formed in the surface of the second fixed angle plate close to the first fixed angle plate, the second fixed angle plate is slidably connected with the fixed column through the column groove, two clamping ball grooves are formed in the column groove, and the distance between the two clamping ball grooves is equal to the distance between the two built-in grooves.

[0009] Preferably, the adjusting part comprises: The adjusting block is arranged in the adjusting groove and is slidably connected with the connecting plate, and the surface of the adjusting block close to the closed carrier plate is fixedly connected with the closed carrier plate. The adjusting screw is rotatably arranged in the adjusting groove, and the adjusting screw is threadedly connected with the adjusting block. The adjusting knob is fixedly arranged on one end of the adjusting screw, and the adjusting knob is used to drive the adjusting screw to rotate.

[0010] Preferably, the fixed surface mechanism comprises: a partition plate located between the sliding grooves and extending into the adjacent sliding grooves at both ends, the partition plate being in sliding connection with the first fixed-angle plate and the second fixed-angle plate; a plurality of fixing portions equidistantly arranged on the partition plate, the fixing portions being used for fixing the square tubes to be connected.

[0011] Preferably, the fixing portion comprises: a plug column slidingly arranged on the partition plate, one end of the plug column being inserted into the square tube through a hole pre-formed on the square tube; a ring baffle sleeved on the plug column and fixedly connected with the plug column; an inner cavity formed in the plug column; a plurality of through grooves uniformly formed on the plug column, the through grooves being in communication with the inner cavity; a plurality of reset grooves formed in the inner cavity, the number of the reset grooves being consistent with that of the through grooves, and the reset grooves being in communication with the adjacent through grooves; a plurality of fixing members uniformly arranged on the plug column, the fixing members being used for cooperating with the partition plate to fix the surface of the square tube to be connected; a rotating member arranged on the plug column.

[0012] Preferably, the fixing member comprises: a fixing sliding block arranged on the plug column and in sliding connection with the through groove, the distance between the end of the fixing sliding block away from the axis of the plug column and the axis of the plug column being less than the diameter of the plug column in the initial state, and the end of the fixing sliding block close to the axis of the plug column being arranged as an inclined surface; a reset plate fixedly arranged on the surface of the fixing sliding block close to the reset groove, the reset plate being in sliding connection with the reset groove; a reset spring fixedly arranged in the reset groove, and the end of the reset spring close to the reset plate being fixedly connected with the reset plate, the reset spring being free of stress in the initial state.

[0013] Preferably, the rotating member comprises: a rotating screw arranged on the plug column and in threaded connection with the plug column, the axis of the rotating screw coinciding with the axis of the plug column, and an internal hexagonal groove being formed on the end face of the rotating screw; a transmission rod located in the inner cavity and fixedly connected with the rotating screw, the axis of the transmission rod coinciding with the axis of the rotating screw, and the end of the transmission rod close to the fixing sliding block also being arranged as an inclined surface matched with the inclined surface on the fixing sliding block.

[0014] A construction method of a connecting device for fabricated buildings, which adopts the connecting device described above, and comprises the following steps: S1, according to the demand, the end of the square tube to be connected is abutted on the closed loading plate, so that the center line of the square tube coincides with the center line of the connecting plate; S2, synchronously moving the second fixed angle plates in each group of fixed angle mechanisms until the spacing between the second fixed angle plates and the first fixed angle plates is moved to the maximum; S3, synchronously adjusting the four groups of fixed angle mechanisms, so that the first fixed angle plates and the second fixed angle plates in the four groups of fixed angle mechanisms are attached to the surface of the square tube to be connected and exert pressure on the surface of the square tube; S4, the insertion column is inserted into the hole pre-formed on the surface of the square tube to be connected through the spacing plate until the ring stop plate is attached to the spacing plate, and then the rotating screw is rotated through the cooperation between the transmission rod and the fixed sliding block to extrude part of the fixed sliding block out of the insertion column, thereby completing the connection and fixation of the square tube to be connected.

[0015] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present application are: The device can connect and fix the surface of the square tube to be connected through the fixed surface mechanism, and the connection and fixation of the square tube surface by the fixed surface mechanism cooperates with the connection and fixation of the square tube corners by the fixed angle mechanism, thereby greatly improving the effect of the device on the connection and fixation of the square tube to be connected, and avoiding the situation of loosening or even disengagement in the subsequent use process.

[0016] The device can adjust the distance between the first fixed angle plates in each fixed angle mechanism according to the actual size of the square tube, so that the device can be suitable for the connection and fixation of square tubes of different sizes, thereby improving the application range of the device to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0018] Figure 1 A perspective structural schematic view of a connecting device for prefabricated buildings is shown.

[0019] Figure 2 A front view of a connecting device for prefabricated buildings is shown.

[0020] Figure 3 A schematic view of part of the structure of a connecting device for prefabricated buildings is shown.

[0021] Figure 4 A perspective structural schematic view of a connecting device for prefabricated buildings is shown. Figure 3Schematic view of the middle part structure.

[0022] Figure 5 A side view is shown Figure 4

[0023] Figure 6 An enlarged schematic view of the partial structure at A in Figure 5

[0024] Figure 7 An enlarged schematic view of the partial structure at B in Figure 6

[0025] Figure 8 A front view is shown Figure 4

[0026] Figure 9 A sectional view of B-B in Figure 8

[0027] Figure 10 An enlarged schematic view of the partial structure at B in Figure 9

[0028] Figure 11 A flow chart showing a construction method of a connecting device for fabricated buildings.

[0029] Legend: 1, connecting base; 2, threaded hole; 3, connecting plate; 4, adjusting groove; 5, closed carrier plate; 6, first fixed angle plate; 7, sliding groove; 8, fixed column; 9, built-in groove; 10, built-in spring; 11, clamping ball; 12, second fixed angle plate; 13, column groove; 14, clamping ball groove; 15, adjusting block; 16, adjusting screw; 17, adjusting knob; 18, intermediate plate; 19, insertion column; 20, ring baffle; 21, inner cavity; 22, through groove; 23, reset groove; 24, fixed sliding block; 25, reset plate; 26, reset spring; 27, rotating screw; 28, inner hexagonal groove; 29, transmission rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0031] ​​​​​​In the description of the present application, it needs to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0032] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used herein are for illustrative purposes only.

[0033] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0034] Reference Figures 1 to 10 Further description is made to the embodiment of the connecting device for fabricated building and the construction method thereof.

[0035] A connecting device for fabricated building, comprising a connecting base body 1, the connecting base body 1 is a regular hexahedron, and a plurality of groups of uniformly distributed threaded holes 2 are formed on each surface of the connecting base body 1. It should be noted that by setting the connecting base body 1 as a regular hexahedron and forming a plurality of groups of uniformly distributed threaded holes 2 on each surface of the connecting base body 1, it is convenient for the staff to connect according to the actual connection requirements of the square tube, thereby to a certain extent, the application range of the device is improved; a connecting plate 3 is arranged on the surface of the connecting base body 1, and the connecting plate 3 is detachably fixedly connected with the connecting base body 1 through the threaded holes 2. By setting the connecting plate 3 and the connecting base body 1 in a detachable fixed connection mode, it is convenient for the staff to set the connecting plate 3 on the surface of the connecting base body 1 according to the actual use requirements; four symmetrically distributed adjusting grooves 4 are formed on the connecting plate 3, and four groups of symmetrically distributed fixed angle mechanisms are arranged on the connecting plate 3, the fixed angle mechanisms are used for fixing the square tube to be connected, and the fixed angle mechanisms comprise: A closed carrier plate 5 is arranged on the surface of the connecting plate 3 away from the connecting base 1, and the length of the closed carrier plate 5 is greater than that of the adjusting groove 4; A first fixed angle plate 6 is fixedly arranged on the closed carrier plate 5, the first fixed angle plate 6 is L-shaped, and a sliding groove 7 is arranged on the surface of each first fixed angle plate 6. An extension part is arranged on the surface of each first fixed angle plate 6 away from the connecting plate 3, and the extension part comprises: A fixed column 8 is fixedly arranged on the surface of the first fixed angle plate 6 away from the connecting plate 3, and two built-in grooves 9 are arranged on the fixed column 8; A built-in spring 10 is arranged in the built-in groove 9, and the built-in spring 10 is always in a compressed state; A clamping ball 11 is slidingly arranged in the built-in groove 9; A second fixed angle plate 12 is arranged on the fixed column 8, and a sliding groove 7 is also arranged on the surface of each second fixed angle plate 12. In the initial state, the second fixed angle plate 12 is attached to the first fixed angle plate 6. A column groove 13 is arranged on the surface of the second fixed angle plate 12 close to the first fixed angle plate 6. The second fixed angle plate 12 is slidingly connected with the fixed column 8 through the column groove 13. Two clamping ball grooves 14 are arranged in the column groove 13, and the distance between the two clamping ball grooves 14 is equal to the distance between the two built-in grooves 9.

[0036] In use, according to the requirements, one end of the square tube to be connected is abutted against the closed carrier plate 5, and the center line of the square tube coincides with the center line of the connecting plate 3, and then the second fixed angle plates 12 in each group of fixed angle mechanisms are synchronously moved, so that the second fixed angle plates 12 move away from the first fixed angle plates 6, until the clamping balls 11 away from the first fixed angle plates 6 slide into the clamping ball grooves 14 on the second fixed angle plates 12 close to the first fixed angle plates 6, at this time, the distance between the first fixed angle plates 6 and the second fixed angle plates 12 is stretched to the maximum; By arranging the extension part, the device can increase the contact area of the square tube corner, thereby improving the stability of the fixed angle mechanism in the device.

[0037] Four groups of adjusting parts are symmetrically arranged on the connecting plate 3, and the adjusting part comprises: An adjusting block 15 is arranged in the adjusting groove 4 and is slidingly connected with the connecting plate 3, and the surface of the adjusting block 15 close to the closed carrier plate 5 is fixedly connected with the closed carrier plate 5; An adjusting screw 16 is rotationally arranged in the adjusting groove 4, and the adjusting screw 16 is threadedly connected with the adjusting block 15; An adjusting knob 17 is fixedly arranged on one end of the adjusting screw 16, and the adjusting knob 17 is used to drive the adjusting screw 16 to rotate. An inner hexagonal groove 28 is arranged on the surface of the adjusting knob 17 away from the adjusting screw 16.

[0038] After the distance between the first fixed angle plate 6 and the second fixed angle plate 12 is adjusted to the maximum, the adjusting knobs in each group of adjusting parts are rotated synchronously, so that the adjusting screws 16 fixedly connected with the adjusting knobs are rotated, and through the threaded transmission cooperation between the adjusting screws 16 and the adjusting blocks 15, the adjusting blocks 15 are synchronously slid in the adjusting grooves 4, so that the closing load plates 5 fixedly connected with the adjusting blocks 15 are synchronously moved towards the corners of the square tube, and then the first fixed angle plates 6 fixedly connected with the closing load plates 5 are synchronously moved towards the corners of the square tube, so that the second fixed angle plates 12 are synchronously moved towards the corners of the square tube through the first fixed angle plates 6 and the second fixed angle plates 12 fixedly connected with the second fixed angle plates 12, until the first fixed angle plates 6 and the second fixed angle plates 12 are attached to the corners of the square tube, and the square tube is applied with corresponding pressure, so that the connection and fixation of the corners of the square tube to be connected are completed. The adjusting parts are arranged, so that the device can adjust the distance between the first fixed angle plates 6 in each fixed angle mechanism according to the actual size of the square tube, so that the device can be applied to the connection and fixation of square tubes with different sizes, and the application range of the device is improved to a certain extent.

[0039] The adjusting parts are arranged, so that the device can adjust the distance between the first fixed angle plates 6 in each fixed angle mechanism according to the actual size of the square tube, so that the device can be applied to the connection and fixation of square tubes with different sizes, and the application range of the device is improved to a certain extent. The interval plate 18 is located between the sliding grooves 7, and the two ends of the interval plate 18 extend into the adjacent sliding grooves 7, the interval plate 18 is slidably connected with the first fixed angle plate 6, and the interval plate 18 is also slidably connected with the second fixed angle plate 12; The fixing parts are arranged, so that the device can adjust the distance between the first fixed angle plates 6 in each fixed angle mechanism according to the actual size of the square tube, so that the device can be applied to the connection and fixation of square tubes with different sizes, and the application range of the device is improved to a certain extent. The insertion column 19 is slidably arranged on the interval plate 18, one end of the insertion column 19 is inserted into the square tube through the hole pre-formed on the square tube; The ring baffle 20 is sleeved on the insertion column 19 and is fixedly connected with the insertion column 19; The inner cavity 21 is formed in the insertion column 19; The through grooves 22 are arranged on the insertion column 19, and the through grooves 22 are in communication with the inner cavity 21; The reset grooves 23 are arranged in the inner cavity 21, the number of the reset grooves 23 is consistent with the number of the through grooves 22, and the reset grooves 23 are in communication with the adjacent through grooves 22; The fixing parts are arranged, so that the device can adjust the distance between the first fixed angle plates 6 in each fixed angle mechanism according to the actual size of the square tube, so that the device can be applied to the connection and fixation of square tubes with different sizes, and the application range of the device is improved to a certain extent. The fixed sliding block 24 is arranged on the insertion column 19 and is in sliding connection with the through slot 22. In the initial state, the distance between the end of the fixed sliding block 24 away from the axis of the insertion column 19 and the axis of the insertion column 19 is less than the diameter of the insertion column 19. The end of the fixed sliding block 24 close to the axis of the insertion column 19 is arranged as an inclined surface. By arranging the fixed sliding block 24, the subsequent cooperation of the fixed sliding block 24 and the interval plate 18 for the surface of the square tube is facilitated. The reset plate 25 is fixedly arranged on the surface of the fixed sliding block 24 close to the reset slot 23. The reset plate 25 is in sliding connection with the reset slot 23. The reset spring 26 is fixedly arranged in the reset slot 23. The end of the reset spring 26 close to the reset plate 25 is fixedly connected with the reset plate 25. In the initial state, the reset spring 26 has no internal stress. It needs to be noted that by arranging the reset plate 25 and the reset spring 26, when the fixed sliding block 24 slides away from the axis of the insertion column 19, the reset plate 25 can extrude the reset spring 26, so that the reset spring 26 stores elastic potential energy. When the subsequent transmission rod 29 resets, the reset spring 26 releases the stored elastic potential energy, so that the reset plate 25 can return to the original position.

[0040] The rotating member is arranged on the insertion column 19. The rotating member comprises: The rotating screw 27 is arranged on the insertion column 19 and is in threaded connection with the insertion column 19. The axis of the rotating screw 27 coincides with the axis of the insertion column 19. The end surface of the rotating screw 27 is provided with an internal hexagonal groove 28. By arranging the internal hexagonal groove 28, the rotating screw 27 is convenient for the staff to rotate. The transmission rod 29 is located in the internal cavity 21 and is fixedly connected with the rotating screw 27. The axis of the transmission rod 29 coincides with the axis of the rotating screw 27. The end of the transmission rod 29 close to the fixed sliding block 24 is also provided with an inclined surface matched with the inclined surface of the fixed sliding block 24.

[0041] After the corner connecting and fixing of the square tube is completed, the rotating screw 27 is rotated. Through the threaded transmission cooperation of the rotating screw 27 and the insertion column 19, the rotating screw 27 moves into the internal cavity 21, and then the transmission rod 29 fixedly connected with the rotating screw 27 also moves into the internal cavity 21. The transmission rod 29 exerts force on each fixed sliding block 24. Through the cooperation of the inclined surface on the transmission rod 29 and the inclined surface on the fixed sliding block 24, each fixed sliding block 24 slides away from the axis of the insertion column 19, so that part of the fixed sliding block 24 slides out of the through slot 22. Through the cooperation between the fixed sliding block 24 and the interval plate 18, the surface of the square tube to be connected is connected and fixed.

[0042] The device is provided with a surface fixing mechanism, so that the device can connect and fix the surface of the to-be-connected square tube, and through the connection and fixation of the surface of the square tube by the surface fixing mechanism, the connection and fixation of the edge angle of the square tube by the corner fixing mechanism are matched, so that the effect of the device on the connection and fixation of the to-be-connected square tube is greatly improved, so that the loosening or even separation in the subsequent use process is avoided.

[0043] Referring to Figure 11 A construction method of a connecting device for fabricated buildings, using the connecting device, comprising the following steps: Step one, according to the requirement, the end of the to-be-connected square tube is abutted on the closed load plate 5, so that the center line of the square tube coincides with the center line of the connecting plate 3; Step two, synchronously move the second corner fixing plate 12 in each group of corner fixing mechanisms until the distance between the second corner fixing plate 12 and the first corner fixing plate 6 is moved to the maximum; Step three, synchronously adjust the four groups of corner fixing mechanisms, so that the first corner fixing plate 6 and the second corner fixing plate 12 in the four groups of corner fixing mechanisms are attached to the surface of the to-be-connected square tube and apply pressure to the surface of the square tube; Step four, insert the insertion column 19 into the hole pre-drilled on the surface of the to-be-connected square tube through the interval plate 18 until the ring baffle 20 is attached to the interval plate 18, and then rotate the rotating screw 27 through the cooperation between the transmission rod 29 and the fixed sliding block 24 to extrude part of the fixed sliding block 24 out of the insertion column 19, thereby completing the connection and fixation of the to-be-connected square tube.

[0044] Working principle: in use, according to the requirement, one end of the to-be-connected square tube is abutted on the closed load plate 5, and the center line of the square tube coincides with the center line of the connecting plate 3, and then the second corner fixing plate 12 in each group of corner fixing mechanisms is synchronously moved, so that the second corner fixing plate 12 moves away from the first corner fixing plate 6, until the clamping ball 11 away from the first corner fixing plate 6 slides into the clamping ball groove 14 on the second corner fixing plate 12, at this time, the distance between the first corner fixing plate 6 and the second corner fixing plate 12 is stretched to the maximum; After the distance between the first fixed angle plate 6 and the second fixed angle plate 12 is adjusted to the maximum, the adjusting knobs in each group of adjusting parts are rotated synchronously, so that the adjusting screw 16 fixedly connected with the adjusting knob is rotated, and through the threaded transmission cooperation between the adjusting screw 16 and the adjusting block 15, each adjusting block 15 is synchronously slid in the adjusting groove 4, so that each closed load plate 5 fixedly connected with each adjusting block 15 is synchronously moved towards the corner of the square tube, and then each first fixed angle plate 6 fixedly connected with each closed load plate 5 is synchronously moved towards the corner of the square tube, so that each second fixed angle plate 12 is synchronously moved towards the corner of the square tube by each fixed column 8 fixedly connected with each first fixed angle plate 6, until each first fixed angle plate 6 and each second fixed angle plate 12 are attached to the corner of the square tube, and the square tube is applied with corresponding pressure, so that the connection and fixation of the corners of the square tube to be connected are completed. After the corners of the square tube to be connected are fixed and connected by the fixed angle mechanism, the rotating screw 27 is rotated, and through the threaded transmission cooperation between the rotating screw 27 and the plug column 19, the rotating screw 27 is moved into the inner cavity 21, and then the transmission rod 29 fixedly connected with the rotating screw 27 is also moved into the inner cavity 21, so that the transmission rod 29 applies a force to each fixed sliding block 24, through the cooperation between the inclined surface on the transmission rod 29 and the inclined surface on the fixed sliding block 24, each fixed sliding block 24 is slid towards the direction away from the axis of the plug column 19, so that part of the fixed sliding block 24 slides out of the through slot 22, and through the cooperation between each fixed sliding block 24 sliding out of the through slot 22 and the partition plate 18, the connection and fixation of the surface of the square tube to be connected are realized.

[0045] The above description of the embodiments enables those skilled in the art to make or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connection device for prefabricated buildings, comprising a connection base (1), wherein the connection base (1) is a regular hexagon, and each surface of the connection base (1) has a plurality of evenly distributed threaded holes (2), and a connection plate (3) is provided on the surface of the connection base (1), wherein the connection plate (3) is detachably and fixedly connected to the connection base (1) through the threaded holes (2), characterized in that, The connecting plate (3) has four symmetrically distributed adjustment slots (4), and the connecting plate (3) has four symmetrically distributed corner fixing mechanisms. The corner fixing mechanisms are used to fix the square tube to be connected. The connecting plate (3) has four symmetrically distributed adjustment parts. The adjustment parts are used to adjust the distance between each corner fixing mechanism. Each set of corner fixing mechanisms is provided with a surface fixing mechanism for fixing the square tube to be connected.

2. The connection device for prefabricated buildings according to claim 1, characterized in that, The corner fixing mechanism includes: A closed carrier plate (5) is disposed on the surface of the connecting plate (3) away from the connecting substrate (1), and the length of the closed carrier plate (5) is greater than the length of the adjusting groove (4); The first corner plate (6) is fixedly mounted on the closed carrier plate (5). The first corner plate (6) is L-shaped, and sliding grooves (7) are provided on the surfaces of opposite sides of each first corner plate (6). The extension is provided on the surface of each first corner plate (6) away from the connecting plate (3).

3. A connection device for prefabricated buildings according to claim 2, characterized in that, The extension includes: A fixing post (8) is fixedly installed on the surface of the first corner plate (6) away from the connecting plate (3), and two built-in grooves (9) are provided on the fixing post (8); An internal spring (10) is disposed in the internal groove (9), and the internal spring (10) is always in a compressed state; The receiving ball (11) is slidably disposed within the built-in groove (9); The second corner plate (12) is set on the fixed column (8), and the surfaces of the opposite sides of each second corner plate (12) are also provided with sliding grooves (7). In the initial state, the second corner plate (12) is in contact with the first corner plate (6).

4. A connection device for prefabricated buildings according to claim 3, characterized in that, The second corner plate (12) has a column groove (13) on its surface near the first corner plate (6). The second corner plate (12) is slidably connected to the fixed column (8) through the column groove (13). Two engaging ball grooves (14) are opened in the column groove (13), and the distance between the two engaging ball grooves (14) is equal to the distance between the two built-in grooves (9).

5. A connection device for prefabricated buildings according to claim 4, characterized in that, The adjustment unit includes: An adjusting block (15) is disposed in the adjusting groove (4) and is slidably connected to the connecting plate (3), and the surface of the adjusting block (15) near the closed carrier plate (5) is fixedly connected to the closed carrier plate (5). The adjusting screw (16) is rotatably disposed in the adjusting groove (4), and the adjusting screw (16) is threadedly connected to the adjusting block (15); An adjustment knob (17) is fixedly installed at one end of the adjustment screw (16), and the adjustment knob (17) is used to drive the adjustment screw (16) to rotate.

6. A connection device for prefabricated buildings according to claim 5, characterized in that, The surface-fixing mechanism includes: The partition plate (18) is located between the sliding grooves (7), and both ends of the partition plate (18) extend into the sliding grooves (7) on the adjacent side. The partition plate (18) is slidably connected to the first corner plate (6), and the partition plate (18) is also slidably connected to the second corner plate (12). The fixing part has multiple sets, and the multiple sets of fixing parts are equidistantly arranged on the partition plate (18). The fixing part is used to fix the square tube to be connected.

7. A connection device for prefabricated buildings according to claim 6, characterized in that, The fixing part includes: Insert post (19) is slidably disposed on the partition plate (18), and one end of the insert post (19) is inserted into the square tube through a pre-drilled hole in the square tube; A ring baffle (20) is sleeved on the insert post (19) and fixedly connected to the insert post (19); The cavity (21) is located within the insert (19); The through slot (22) has multiple slots, and the multiple through slots (22) are evenly opened on the insert (19), and the through slots (22) are connected to the inner cavity (21); Reset slots (23) are formed in the inner cavity (21). The number of reset slots (23) is the same as the number of through slots (22), and the reset slots (23) are connected to the adjacent through slots (22). The fastener has multiple sets, and the multiple sets of fasteners are evenly arranged on the insert (19). The fastener is used to cooperate with the partition plate (18) to fix the surface of the square tube to be connected. A rotating component is provided on the insert (19).

8. A connection device for prefabricated buildings according to claim 7, characterized in that, The fastener includes: A fixed slider (24) is set on the insert post (19) and slidably connected to the through groove (22). In the initial state, the distance between the end of the fixed slider (24) away from the axis of the insert post (19) and the axis of the insert post (19) is less than the diameter of the insert post (19). The end of the fixed slider (24) close to the axis of the insert post (19) is set as an inclined surface. A reset plate (25) is fixedly disposed on the surface of the fixed slider (24) near the reset groove (23), and the reset plate (25) is slidably connected to the reset groove (23); The reset spring (26) is fixedly installed in the reset groove (23), and the end of the reset spring (26) near the reset plate (25) is fixedly connected to the reset plate (25). The reset spring (26) has no internal stress in its initial state.

9. A connection device for prefabricated buildings according to claim 8, characterized in that, The rotating component includes: A rotating screw (27) is mounted on the insert (19) and threadedly connected to the insert (19). The axis of the rotating screw (27) coincides with the axis of the insert (19). An internal hexagonal groove (28) is provided on the end face of the rotating screw (27). The transmission rod (29) is located inside the cavity (21) and is fixedly connected to the rotating screw (27). The axis of the transmission rod (29) coincides with the axis of the rotating screw (27), and the end of the transmission rod (29) near the fixed slider (24) is also provided with an inclined surface that cooperates with the inclined surface on the fixed slider (24).

10. A construction method for a connection device used in prefabricated buildings, characterized in that, The use of the connection device as described in any one of claims 1-9 includes the following steps: S1. According to the requirements, place one end of the square tube to be connected against the closed carrier plate (5) so that the center line of the square tube coincides with the center line of the connecting plate (3); S2. Simultaneously move the second corner plate (12) in each set of corner fixing mechanisms until the distance between the second corner plate (12) and the first corner plate (6) is moved to the maximum. S3. Synchronously adjust the four sets of corner fixing mechanisms so that the first corner fixing plate (6) and the second corner fixing plate (12) in the four sets of corner fixing mechanisms are attached to the surface of the square tube to be connected and apply pressure to the surface of the square tube. S4. Insert the insert (19) into the pre-drilled hole on the surface of the square tube to be connected through the partition plate (18) until the ring baffle (20) fits against the partition plate (18). Then rotate the rotating screw (27) and through the cooperation between the transmission rod (29) and the fixed slider (24), part of the fixed slider (24) is squeezed out of the insert (19), thus completing the connection and fixing of the square tube to be connected.

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