A fixed structure and a connecting joint of a modular steel structure

Abstract

The utility model relates to the technical field of fabricated steel structure, disclose a kind of fixed structure and the connecting joint of modular steel structure, fixed structure includes at least one first connecting piece, first connecting piece includes plug-in board, connecting plate and support plate, at least one horizontal direction extension slot is provided on plug-in board, connecting plate is fixed in the top side of plug-in board;The plug-in board of each slot lower part is fixed with support plate, and support plate is in contact with steel beam flange plate up and down.The connecting joint of modular steel structure includes fixed structure and second connecting piece, first connecting part inserts and is tightly attached on the inner wall of upper column;Second connecting part inserts and is tightly attached on the inner wall of lower column;Steel beam flange plate inserts each slot, connecting plate is fixedly connected with second connecting piece, and steel beam flange plate is in contact with support plate up and down.The utility model structure is simple, connection is reliable, easy to disassemble, solve the technical problem of the load bearing capacity of weakening steel beam and steel column in the prior art hole, reduce the safety of connecting joint.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated steel structure technology, and in particular to a connection node for fixed and modular steel structures. Background Technology

[0002] Modular buildings consist of multiple modular units with independent functions and complete structural systems. Each modular unit is prefabricated in a factory, transported to the construction site, and then assembled using mechanical connection nodes to form a fully functional integrated building. Modular buildings have advantages such as simple structure, easy disassembly, and shorter construction time, and have been widely used in dormitories, offices, hospitals, and other buildings.

[0003] In modular steel structure buildings, the connection method between module units directly affects the structural safety performance and construction efficiency. In existing technologies, to ensure the reliability of multi-module unit connections, the modules are connected by dense bolt groups. During construction, holes need to be drilled in the steel beams and columns of each module unit. The presence of numerous holes weakens the load-bearing capacity of the steel beams and columns, reducing the safety of the multi-module unit connection nodes. Utility Model Content

[0004] The technical problem this invention aims to solve is that the presence of numerous holes in existing multi-module unit connection nodes weakens the load-bearing capacity of steel beams and columns, thereby reducing the safety of the multi-module unit connection nodes.

[0005] To solve the above-mentioned technical problems, this utility model provides a fixing structure, including at least one first connecting member, the first connecting member comprising:

[0006] The plug-in plate has at least one horizontally extending slot, and each slot has an opening at one end. The flange plate of the steel beam is inserted into the slot through the opening.

[0007] The connecting plate is fixedly installed on one side of the top of the plug-in plate;

[0008] Each slot has a support plate fixedly installed on the plug-in plate at the bottom.

[0009] The slot is used for inserting the flange plate of the steel beam, and the support plate abuts against the flange plate of the steel beam from top to bottom.

[0010] Preferably, there are two slots, which are arranged vertically at an interval.

[0011] Preferably, there are two first connectors, and the two plug plates of the two first connectors are vertically fixedly connected.

[0012] A connection node for a modular steel structure is provided for connecting an upper module and a lower module. The upper module includes at least one upper column and at least one upper beam, with each upper beam fixedly installed on one side of the upper column. The lower module includes at least one lower column and at least one lower beam, with each lower beam fixedly installed on one side of the lower column. The connection node of the modular steel structure includes a fixing structure and a second connector.

[0013] The second connector includes a connecting end plate, a first connecting part is fixedly installed on the upper surface of the connecting end plate, and a second connecting part is fixedly installed on the lower surface of the connecting end plate. The first connecting part is used to insert into each upper column and is tightly attached to the inner wall of each upper column; the second connecting part is used to insert into each lower column and is tightly attached to the inner wall of each lower column.

[0014] The flange plates of each upper beam or each lower beam are inserted into their respective slots. The connecting plate is fixedly connected to the second connecting piece. The flange plates of each upper beam or each lower beam abut against each supporting plate.

[0015] Preferably, the upper module includes four upper columns arranged in two rows and two columns. All four upper columns are box-section columns, and an upper beam is fixedly installed on the column wall of each adjacent upper column that is far apart from each other.

[0016] The lower module includes four lower columns arranged in two rows and two columns. All four lower columns are box-section columns, and a lower beam is fixedly installed on the column wall of each adjacent lower column that is far apart from each other.

[0017] Preferably, the first connecting part includes four vertically spaced first connecting rods, each of which is vertically fixed to the upper surface of the connecting end plate;

[0018] The second connecting part includes four vertically spaced second connecting rods, each of which is vertically fixed to the lower surface of the connecting end plate.

[0019] Preferably, each first connecting rod and each second connecting rod includes a first mounting plate and a second mounting plate that are perpendicular to each other and fixedly connected;

[0020] Each first connecting rod is inserted into each upper column, and the first mounting plate and the second mounting plate are respectively attached to the inner side of the column wall where the upper beam is fixedly installed;

[0021] Each second connecting rod is inserted into each lower column, and the first mounting plate and the second mounting plate are respectively attached to the inner side of the column wall where the lower beam is fixedly installed.

[0022] Preferably, the interval between two adjacent first connecting rods is the sum of the wall thicknesses of the two corresponding upper columns, and the interval between two adjacent second connecting rods is the sum of the wall thicknesses of the two corresponding lower columns.

[0023] Preferably, both the column wall on which the upper beam is fixedly installed and the column wall on which the lower beam is fixedly installed are provided with mounting openings, and each mounting opening is provided with a self-locking structure, which is used to lock the second connecting member.

[0024] Preferably, the self-locking structure includes a self-resetting rotating shaft and a rotating plate. The self-resetting rotating shaft is fixedly installed in the mounting opening. One end of the rotating plate is fixed to the self-resetting rotating shaft, and a locking plate is fixedly installed at an angle on the other end of the rotating plate. The locking plate is located on the side of the rotating plate closer to the second connecting member, and the locking plate is inclined from the horizontal direction toward the self-resetting rotating shaft.

[0025] Each first mounting plate and each second mounting plate is provided with a locking groove corresponding to the locking plate;

[0026] The rotating plate rotates away from the mounting port to drive the self-resetting shaft to rotate elastically, and the self-resetting shaft can rotate elastically to reset, thereby driving the rotating plate to rotate and reset, so that the locking plate is inserted into the locking groove.

[0027] Compared with the prior art, the connection node of the fixed structure and modular steel structure of this utility model has the following advantages:

[0028] One embodiment of this utility model provides a fixing structure that uses slots on a connector plate for inserting the flange plate of a steel beam, thereby achieving a fixed connection between the fixing structure and the steel beam. The fixing structure is then connected to other components via connecting plates, thus achieving a fixed connection between the steel beam and other components. The slots and connecting plates, while achieving the connection between the steel beam and other components, avoid the need for bolt holes on the steel beam, ensuring the load-bearing capacity of the steel beam. In the fixing structure, a support plate is located at the bottom of the slot, and after the flange plate of the steel beam is inserted into the slot, the support plate adheres to the flange plate, enhancing the load-bearing capacity of the steel beam. At the same time, the support plate increases the contact area between the fixing structure and the steel beam, enhancing the connection strength between the steel beam and the fixing structure, thereby improving the reliability of the connection between the steel beam and other components.

[0029] In a modular steel structure connection node according to an embodiment of this utility model, the second connecting part of the second connector is first inserted into the lower column of each lower module, and then the upper column of each upper module is inserted into the first connecting part. Both the first connecting part and the second connecting part are tightly attached to the inner wall of each steel column, so that the first connecting part, the second connecting part and each steel column are tightly connected in the horizontal direction, realizing a reliable connection between each upper module and between each lower module; then the first connecting part and the second connecting part are fixedly connected by the connecting end plate, realizing a fixed connection between the upper module and the lower module in the horizontal direction.

[0030] After the second connector is connected to each steel column, the fixing structure is inserted into the flange plate of each steel beam, and then fixedly connected to the second connector through the connecting plate of the fixing structure. The setting of the fixing structure realizes a reliable connection between the steel beam and the second connector. The beams and columns of the upper module and the lower module are all fixed to the second connector through the fixing structure, realizing a reliable connection between the upper and lower modules in the vertical direction. At the same time, each upper column and each lower column are respectively inserted and fixed to the first connecting part and the second connecting part. Under the action of gravity, the upper column and the lower column are pressed against the connecting end plate. With the cooperation of the first connecting part and the second connecting part inserted inside the steel column, even if the fixing structure and the second connector fail, it is difficult for the upper column and the lower column to separate, which enhances the safety reserve of the connection node and improves the reliability of the connection node.

[0031] The modular steel structure connection node of this utility model embodiment is simple in structure, reliable in connection, and easy to disassemble. No bolt holes are opened in the steel beams and steel columns in the entire connection node, which avoids the weakening of the load-bearing capacity of the components by the holes. It solves the technical problem that the presence of a large number of holes in the existing multi-module unit connection nodes weakens the load-bearing capacity of the steel beams and steel columns and reduces the safety of the multi-module unit connection nodes. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model;

[0033] Figure 2 This is a three-dimensional structural diagram of the second connector according to an embodiment of the present utility model;

[0034] Figure 3 This is a three-dimensional structural diagram of the fixed structure according to an embodiment of the present invention;

[0035] Figure 4 This is a schematic diagram of the self-locking structure of the steel column before insertion according to an embodiment of this utility model;

[0036] Figure 5 This is a schematic diagram of the self-locking structure in the steel column insertion of this utility model embodiment;

[0037] Figure 6 This is a schematic diagram of the self-locking structure of the steel column after insertion according to an embodiment of this utility model;

[0038] Figure 7 This is a schematic diagram of the lower beam and column assembly according to an embodiment of this utility model;

[0039] Figure 8 This is a schematic diagram of the lower beam and column installation and fixing structure according to an embodiment of this utility model;

[0040] Figure 9 This is a schematic diagram of the lower beam and column installation and fixing structure according to an embodiment of this utility model;

[0041] Figure 10 This is a schematic diagram of the upper beam and column insertion according to an embodiment of this utility model;

[0042] Figure 11 This is a schematic diagram of the upper beam and column installation and fixing structure according to an embodiment of this utility model;

[0043] Figure 12 This is a schematic diagram of the installation of the fourth upper column in an embodiment of this utility model;

[0044] In the diagram, 1. First connector; 10. Mounting port; 11. Plug-in plate; 12. Slot; 13. Opening; 14. Connecting plate; 15. Support plate; 16. First connecting hole; 17. Self-locking structure; 171. Torsion spring shaft; 172. Rotating plate; 173. Locking plate; 174. Mounting plate; 18. Locking groove; 2. Upper module; 21. Upper column; 22. Upper beam; 3. Lower module; 31. Lower column; 32. Lower beam; 4. Second connector; 41. Connecting end plate; 411. Second connecting hole; 42. First connecting part; 421. First connecting rod; 43. Second connecting part; 431. Second connecting rod; 5. First mounting plate; 6. Second mounting plate. Detailed Implementation

[0045] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0046] In the description of this utility model, it should be understood that the terms "upper", "lower", "vertical", "horizontal", "bottom", "inner", "outer" and other terms used in this utility model to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] It should be understood that the terms "first," "second," etc., are used in this utility model to describe various information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this utility model, "first" information can also be called "second" information, and similarly, "second" information can also be called "first" information.

[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" 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 utility model based on the specific circumstances.

[0049] like Figure 3 As shown, a preferred embodiment of the present invention includes a fixing structure comprising at least one first connector 1. The first connector 1 includes a plug-in plate 11, a connecting plate 14, and a support plate 15. The plug-in plate 11 is provided with at least one horizontally extending slot 12, with an opening reserved at one end of each slot. The flange plate of the steel beam is inserted into the slot through the opening. The connecting plate 14 is fixedly installed on one side of the top of the plug-in plate 11. A support plate 15 is fixedly installed on the plug-in plate 11 at the lower part of each slot 12. The slot 12 is used for inserting the flange plate of the steel beam, and the support plate 15 abuts against the flange plate of the steel beam. By setting a slot 12 on the plug-in plate 11 for inserting the flange plate of the steel beam, a fixed connection between the fixed structure and the steel beam is achieved. The fixed structure is then connected to other components through the connecting plate 14, thereby achieving a fixed connection between the steel beam and other components. The setting of the slot 12 and the connecting plate 14, while achieving the connection between the steel beam and other components, avoids the need to open bolt holes on the steel beam, ensuring the load-bearing capacity of the steel beam. In the fixed structure, the support plate 15 is set at the lower part of the slot 12, and after the flange plate of the steel beam is inserted into the slot 12, the support plate 15 is attached to the flange plate, which enhances the load-bearing capacity of the steel beam. At the same time, the setting of the support plate 15 increases the contact area between the fixed structure and the steel beam, enhances the connection strength between the steel beam and the fixed structure, and thus improves the reliability of the connection between the steel beam and other components.

[0050] Furthermore, such as Figure 3 As shown in this embodiment of the utility model, the fixing structure includes two first connecting members 1, and two plug-in plates 11 of the two first connecting members 1 are vertically fixedly connected. Each first connecting member 1 has two slots 12, which are arranged vertically at intervals. At the same time, there are also two support plates 15, which are arranged horizontally on the plug-in plates 11 below each slot 12. The top surface of each support plate 15 is flush with the bottom surface of each slot 12, so as to achieve vertical contact between the steel beam flange plate and the support plate 15 after insertion. The two support plates 15 and the connecting plate 14 are all located on the same side of the plug-in plate 11.

[0051] Furthermore, to improve the ease of assembly and disassembly of the fixed structure, each connecting plate 14 is provided with a first connecting hole 16 for bolt connection with the second connecting hole 411 on the second connecting member 4. During installation, the flange plates of each steel beam are inserted into the slots 12 through the openings 13. After the steel beams and the fixed structure are inserted, the bolts are simultaneously passed through the first connecting hole 16 and the second connecting hole 411 to achieve a fixed connection between the fixed structure and the second connecting member 4, thereby achieving the connection between the steel beams and other components.

[0052] like Figures 1 to 12 As shown, a preferred embodiment of the present invention provides a connection node for a modular steel structure, used to connect an upper module and a lower module. The upper module 2 includes at least one upper column 21 and at least one upper beam 22, with each upper beam 22 fixedly installed on one side of the upper column 21. The lower module 3 includes at least one lower column 31 and at least one lower beam 32, with each lower beam 32 fixedly installed on one side of the lower column 31. In this embodiment of the utility model, the upper module 2 includes four upper columns 21 arranged in two rows and two columns. All four upper columns 21 are square steel tubes, which are attached to each other. An upper beam 22 is fixedly installed on the column wall of each adjacent upper column 21 that is far apart from each other. That is, an upper beam 22 is fixedly installed on the column wall of each square steel tube on the outer periphery of the upper column group composed of the four square steel tubes. The upper beam 22 is located at the lower part of each upper column 21. The lower module 3 includes four lower columns 31 arranged in two rows and two columns. All four lower columns 31 are square steel tubes. A lower beam 32 is fixedly installed on the column wall of each adjacent lower column 31 that is far apart from each other. That is, a lower beam 32 is fixedly installed on the column wall of each square steel tube on the outer periphery of the lower column group composed of the four square steel tubes. The lower beam 32 is located at the upper part of each lower column 31. In this embodiment, both the upper beam 22 and the lower beam 32 are channel steel. The webs of the channel steel of adjacent upper columns 21 are arranged in close contact, and the webs of the channel steel of adjacent lower columns 31 are also arranged in close contact. The upper beam 22 and the lower beam 32 are arranged vertically opposite each other. In this embodiment, the upper columns 21 and upper beams 22, and the lower columns 31 and lower beams 32 are fixed by welding. This process can be completed directly in the factory, and the prefabricated upper or lower beams and columns can be directly hoisted during on-site installation.

[0053] Furthermore, such as Figure 1 , Figures 8 to 12As shown, based on the fixed structure provided in the above embodiment, the connection node of the modular steel structure includes a fixed structure and a second connector 4; the second connector 4 includes a connecting end plate 41, on which a second connecting hole 411 corresponding to the first connecting hole 16 is provided; a first connecting part 42 is fixedly installed on the upper surface of the connecting end plate 41; the first connecting part 42 includes four vertically spaced first connecting rods 421, each of which is vertically fixedly connected to the upper surface of the connecting end plate 41; a second connecting part 43 is fixedly installed on the lower surface of the connecting end plate 41; the second connecting part 43 includes four vertically spaced second connecting rods 431, each of which is vertically fixedly connected to the lower surface of the connecting end plate 41.

[0054] Each of the first connecting rods 421 and the second connecting rods 431 includes a first mounting plate 5 and a second mounting plate 6 that are perpendicular to each other and fixedly connected. After each of the first connecting rods 421 is inserted into each of the upper columns 21, the first mounting plate 5 and the second mounting plate 6 are respectively tightly attached to the inner side of the column wall on which the upper beam 22 is fixedly installed. After each of the second connecting rods 431 is inserted into each of the lower columns 31, the first mounting plate 5 and the second mounting plate 6 are respectively tightly attached to the inner side of the column wall on which the lower beam 32 is fixedly installed. Furthermore, the width of the first mounting plate 5 and the second mounting plate 6 is the width of the square steel pipe column minus twice the wall thickness of the square steel pipe, so that the first mounting plate 5 and the second mounting plate 6 are firmly pressed against the inner wall of the square steel pipe column. At the same time, the interval between two adjacent first connecting rods 421 is the sum of the wall thicknesses of the corresponding two upper columns 21, and the interval between adjacent second connecting rods 431 is the sum of the wall thicknesses of the corresponding two lower columns 31, so that the upper columns 21 and the lower columns 31 are firmly pressed against each other. Through the first mounting plate 5 and the second mounting plate 6, and by setting the intervals between the connecting rods, horizontal displacement between the first connecting rod or the second connecting rod and the square steel pipe column is avoided, thus improving the overall integrity of the connection node.

[0055] Furthermore, such as Figures 8 to 12 As shown, in this embodiment of the utility model, there are eight fixing structures. The eight fixing structures are respectively set at the corners of the outer perimeter of the upper column group composed of four square steel pipes and the corners of the outer perimeter of the lower column group composed of four square steel pipes. During installation, the upper flange plate and the lower flange plate of each channel steel are inserted into the slot 12 respectively. The upper flange plate and the lower flange plate of each channel steel abut against each support plate 15. Then, the bolts are passed through the first connecting hole 16 and the second connecting hole 411 at the same time to realize the fixed connection between the fixing structure and the second connecting piece 4.

[0056] Furthermore, such as Figure 1 , Figures 4 to 6As shown, mounting openings 10 are provided on both the column wall where the upper beam 22 is fixedly installed and the column wall where the lower beam 32 is fixedly installed. Each mounting opening 10 contains a self-locking structure 17, which is used to lock the second connecting member 4. The self-locking structure 17 includes a self-resetting shaft and a rotating plate 172. The self-resetting shaft is fixedly installed within the mounting opening 10. In this embodiment, the self-resetting shaft is a torsion spring shaft 171, which is horizontally arranged, with both ends fixed to the column wall within the mounting opening 10. The torsion spring shaft 171 contains a torsion spring. When the torsion spring shaft 171 is subjected to torque, the internal torsion spring undergoes torsional deformation, thereby storing elastic potential energy. When the torque acting on the torsion spring shaft 171 disappears or decreases, the elastic potential energy stored in the spring is released, the spring begins to reset, and this drives the component fixed to the torsion spring shaft 171 to reset.

[0057] Furthermore, one end of the rotating plate 172 is fixed to the outer shell of the torsion spring shaft 171, and a locking plate 173 is fixedly installed at an included angle on the other end of the rotating plate 172. The locking plate 173 is located on the side of the rotating plate 172 near the second connecting member 4, and the locking plate 173 is inclined from the horizontal direction toward the self-resetting shaft 171. In this embodiment of the present invention, the rotating plate 172 is arranged vertically, and the rotating plate 172 is disposed on the side of the torsion spring shaft 171 near the connecting end plate 41. Specifically, in each upper column 21, a rotating plate 172 is fixedly installed at the bottom of a torsion spring shaft 171, and a locking plate 173 is located on the side of the rotating plate 172 facing the interior of the upper column 21, with the locking plate 173 tilting upwards from the horizontal direction; in each lower column 31, a rotating plate 172 is fixedly installed at the top of a torsion spring shaft 171, and a locking plate 173 is located on the side of the rotating plate 172 facing the interior of the lower column 31, with the locking plate 173 tilting downwards from the horizontal direction.

[0058] Furthermore, such as Figures 4 to 6 As shown, in order to seal the mounting opening 10 and prevent corrosive media from entering the steel column, a mounting plate 174 is provided on the torsion spring shaft 171. The mounting plate 174 is located on the side of the torsion spring shaft 171 opposite to the rotating plate 172. Furthermore, each of the first mounting plates 5 and each of the second mounting plates 6 is provided with a locking groove 18 corresponding to the locking plate 173. Each locking groove 18 is a horizontally arranged rectangular groove for inserting the locking plate 173.

[0059] like Figures 4 to 6As shown, during installation, when each upper column 21 is inserted into each first connecting rod 421, the locking plate 173 of the self-locking structure 17 moves downward and abuts against the first connecting rod 421. As each upper column 21 continues to move downward, the first connecting rod 421 moves along the outside of the locking plate 173, thereby squeezing the rotating plate 172, causing the rotating plate 172 to rotate away from the mounting opening 10 on the outside of the upper column 21, thereby driving the torsion spring shaft to rotate, and the torsion spring accumulates energy. When the locking groove 18 on the first connecting rod 421 passes through the locking plate 173, the torsion spring releases energy, the torsion spring shaft rotates to reset, thereby driving the rotating plate 172 to rotate to reset, so that the locking plate 173 is inserted into the locking groove 18, realizing the self-locking between the upper column 21 and the second connecting member 4.

[0060] When the second connecting rod 431 is inserted into each of the lower columns 31, the first mounting plate 5 and the second mounting plate 6 move downwards and abut against the locking plate 173 of the self-locking structure 17. As the second connecting rod 431 continues to move downwards, it moves along the outside of the locking plate 173 and presses the rotating plate 172. The rotating plate 172 rotates away from the mounting opening 10 and drives the torsion spring shaft to rotate, accumulating energy. When the locking groove 18 on the second connecting rod 431 passes the locking plate 173, the torsion spring releases energy, the torsion spring shaft rotates to reset, and drives the rotating plate 172 to rotate to reset, so that the locking plate 173 is inserted into the locking groove 18, realizing the self-locking between the lower column 31 and the second connecting member 4.

[0061] The working process of this utility model is as follows: First, the lower-level column 31 and lower-level beam 32 are hoisted and assembled to form the lower-level module 3. Then, each of the second connecting rods 431 of the second connecting member 4 is inserted into each of the lower-level columns 31, and the second connecting member 4 and each of the lower-level columns 31 are locked by the self-locking structure 17. Then, the four fixing structures are inserted into the lower-level beam 32, and bolts are used to simultaneously pass through the first connecting hole 16 and the second connecting hole 411 for fixed connection, thereby fixing the fixing structure to the second connecting member 4. After that, an upper-level beam 21 is hoisted and inserted into the first connecting rod 431 of the second connecting member 4. The second connecting piece 4 is locked to the upper column 21 via the self-locking structure 17 on the upper column 21. Then, the fixing structure is inserted into the upper beam 22 on the upper column 21, and bolts are used to fix the connection between the fixing structure and the second connecting piece 4 by passing through the first connecting hole 16 and the second connecting hole 411. Then, the next upper beam column is hoisted to lock the upper column 21 and the second connecting piece 4. At the same time, the fixing structure is installed to fix the fixing structure and the second connecting piece 4. This process is repeated until all upper modules 2 are hoisted and fixed.

[0062] In summary, this utility model embodiment provides a fixing structure. By setting a slot 12 on the plug-in plate 11 for inserting the flange plate of the steel beam, a fixed connection between the fixing structure and the steel beam is achieved. The fixing structure is then connected to other components through the connecting plate 14, thereby achieving a fixed connection between the steel beam and other components. The setting of the slot 12 and the connecting plate 14, while achieving the connection between the steel beam and other components, avoids the need for bolt holes on the steel beam, ensuring the load-bearing capacity of the steel beam. In the fixing structure, the support plate 15 is set at the lower part of the slot, and the lower surface of the slot 12 is flush with the upper surface of the support plate 15. When the flange plate of the steel beam is inserted into the slot 12, the support plate 15 is attached to the flange plate, enhancing the load-bearing capacity of the steel beam. At the same time, the setting of the support plate 15 increases the contact area between the fixing structure and the steel beam, enhances the connection strength between the steel beam and the fixing structure, and thus improves the reliability of the connection between the steel beam and other components.

[0063] In a modular steel structure connection node according to an embodiment of the present invention, the second connecting part 43 of the second connecting member 4 is first inserted into the lower column 31 of each lower module 3, and then the upper column 21 of each upper module 2 is inserted into the first connecting part 42. The first connecting part 42 and the second connecting part 43 are both tightly attached to the inner wall of each steel column, so that the first connecting part 42, the second connecting part 43 and each steel column are tightly connected in the horizontal direction, realizing a reliable connection between each upper module 2 and each lower module 3; then the first connecting part 42 and the second connecting part 43 are fixedly connected by the connecting end plate 41, realizing a fixed connection between the upper module 2 and the lower module 3 in the horizontal direction.

[0064] After the second connector 4 is connected to each steel column, the fixing structure is inserted into the flange plate of each steel beam, and then fixedly connected to the second connector 4 through the connecting plate 14 of the fixing structure. The setting of the fixing structure realizes a reliable connection between the steel beam and the second connector 4. The beams and columns of the upper module 2 and the lower module 3 are all fixed to the second connector 4 through the fixing structure, realizing a reliable connection between the upper and lower modules in the vertical direction. At the same time, each upper column 21 and each lower column 31 are respectively inserted and fixed to the first connecting part 42 and the second connecting part 43. Under the action of gravity, the upper column 21 and the lower column 31 are pressed against the connecting end plate 41. With the cooperation of the first connecting part 42 and the second connecting part 43 inserted into the steel column, even if the fixing structure and the second connector 4 fail, it is difficult for the upper column 21 and the lower column 31 to separate, which enhances the safety reserve of the connection node and improves the reliability of the connection node.

[0065] The modular steel structure connection node of this utility model embodiment is simple in structure, reliable in connection, and easy to disassemble. No bolt holes are opened in the steel beams and steel columns in the entire connection node, which avoids the weakening of the load-bearing capacity of the components by the holes. It solves the technical problem that the presence of a large number of holes in the existing multi-module unit connection nodes weakens the load-bearing capacity of the steel beams and steel columns and reduces the safety of the multi-module unit connection nodes.

[0066] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A fixed structure, characterized in that, Includes at least one first connector (1), the first connector (1) comprising: A plug-in plate (11) is provided with at least one horizontally extending slot (12), and an opening (13) is reserved at one end of each slot (12). The flange plate of the steel beam is inserted into the slot (12) through the opening (13). A connecting plate (14) is fixedly installed on one side of the top of the plug-in plate (11); A support plate (15) is fixedly installed on the plug-in plate (11) at the lower part of each slot (12); The slot (12) is used for inserting the flange plate of the steel beam, and the support plate (15) abuts against the flange plate of the steel beam.

2. The fixing structure according to claim 1, characterized in that, There are two slots (12), which are arranged vertically at intervals.

3. The fixing structure according to claim 2, characterized in that, There are two first connectors (1), and the two plug plates (11) of the two first connectors (1) are vertically fixedly connected.

4. A connection node for a modular steel structure, used to connect an upper module and a lower module, wherein the upper module (2) includes at least one upper column (21) and at least one upper beam (22), each of the upper beams (22) being fixedly installed on one side of the upper column (21), and the lower module (3) includes at least one lower column (31) and at least one lower beam (32), each of the lower beams (32) being fixedly installed on one side of the lower column (31), characterized in that, The connection nodes of the modular steel structure include the fixing structure as described in any one of claims 1 to 3 and the second connector (4); The second connector (4) includes a connecting end plate (41), on the upper surface of which a first connecting part (42) is fixedly installed, and on the lower surface of which a second connecting part (43) is fixedly installed. The first connecting part (42) is used to insert into each of the upper columns (21) and is tightly attached to the inner wall of each of the upper columns (21). The second connecting part (43) is used to insert into each of the lower columns (31) and is tightly attached to the inner wall of each of the lower columns (31). The flange plates of each of the upper beams (22) or the lower beams (32) are respectively inserted into the slots (12), the connecting plate (14) is fixedly connected to the second connecting member (4), and the flange plates of each of the upper beams (22) or the lower beams (32) abut against each of the support plates (15) vertically.

5. The connection node of the modular steel structure according to claim 4, characterized in that, The upper module (2) includes four upper columns (21) arranged in two rows and two columns. All four upper columns (21) are box-section columns. An upper beam (22) is fixedly installed on the column wall of each adjacent upper column (21) that is far apart from each other. The lower module (3) includes four lower columns (31) arranged in two rows and two columns. All four lower columns (31) are box-section columns. A lower beam (32) is fixedly installed on the column wall of each adjacent lower column (31) that is far apart from each other.

6. The connection node of the modular steel structure according to claim 5, characterized in that, The first connecting part (42) includes four vertically spaced first connecting rods (421), each of which is vertically fixed to the upper surface of the connecting end plate (41). The second connecting part (43) includes four vertically spaced second connecting rods (431), each of which is vertically fixed to the lower surface of the connecting end plate (41).

7. The connection node of the modular steel structure according to claim 6, characterized in that, Each of the first connecting rods (421) and each of the second connecting rods (431) includes a first mounting plate (5) and a second mounting plate (6) that are perpendicular to each other and fixedly connected; Each of the first connecting rods (421) is inserted into each of the upper columns (21), and the first mounting plate (5) and the second mounting plate (6) are respectively attached to the inner side of the column wall where the upper beam (22) is fixedly installed; Each of the second connecting rods (431) is inserted into each of the lower columns (31), and the first mounting plate (5) and the second mounting plate (6) are respectively attached to the inner side of the column wall where the lower beam (32) is fixedly installed.

8. The connection node of the modular steel structure according to claim 6, characterized in that, The interval between two adjacent first connecting rods (421) is the sum of the wall thicknesses of the two corresponding upper columns (21), and the interval between two adjacent second connecting rods (431) is the sum of the wall thicknesses of the two corresponding lower columns (31).

9. The connection node of the modular steel structure according to claim 7, characterized in that, An installation opening (10) is provided on the column wall where the upper beam (22) is fixedly installed and on the column wall where the lower beam (32) is fixedly installed. Each installation opening (10) is provided with a self-locking structure (17), which is used to lock the second connecting member (4).

10. The connection node of the modular steel structure according to claim 9, characterized in that, The self-locking structure (17) includes a self-resetting rotating shaft (171) and a rotating plate (172). The self-resetting rotating shaft (171) is fixedly installed in the mounting port (10). One end of the rotating plate (172) is fixed to the self-resetting rotating shaft (171). The other end of the rotating plate (172) is fixedly installed with a locking plate (173) at an angle. The locking plate (173) is located on the side of the rotating plate (172) close to the second connecting member (4), and the locking plate (173) is inclined towards the self-resetting rotating shaft (171) from the horizontal direction. Each of the first mounting plates (5) and each of the second mounting plates (6) is provided with a locking groove (18) corresponding to the locking plate (173); The rotating plate (172) rotates away from the mounting port (10) to drive the self-resetting rotating shaft (171) to rotate elastically, and the self-resetting rotating shaft (171) can rotate elastically to reset to drive the rotating plate (172) to rotate and reset, so that the locking plate (173) is inserted into the locking groove (18).

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