Connection node and steel structure

Abstract

The present application relates to the technical field of steel structure node connection, and discloses a connecting node and a steel structure, the connecting node comprising a first connecting plate, a second connecting plate and a first fastening assembly; one side of the first connecting plate is provided with at least two first limiting grooves, and the at least two first limiting grooves are distributed at intervals around the circumference of the first connecting plate; one side of the second connecting plate is provided with at least two second limiting grooves, and the at least two second limiting grooves are distributed at intervals around the circumference of the second connecting plate; the positions and quantities of the first limiting grooves and the second limiting grooves are one-to-one correspondingly arranged; the first fastening assembly detachably connects the first connecting plate and the second connecting plate, the first limiting grooves and the second limiting grooves are spliced with each other to form a limiting hole, and a first rod to be connected is adapted to be detachably inserted into the limiting hole. The connecting node of the present application realizes plug-in connection, does not need welding, is highly operable, and is convenient and fast to install.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel structure joint connection, in particular to a connecting joint and a steel structure. BACKGROUND

[0002] In the existing steel structures such as diagonal grid structures and cross braces, in order to facilitate transportation, the steel structures are usually divided into multiple sections, and the multiple sections of the steel structures are connected through connecting joints. The intersecting nodes of the multiple sections of the steel structures are generally connected through bolt ball joint connection, welded ball joint connection, and interpenetrating welding.

[0003] However, in the bolt ball joint connection, tightening operation needs to be performed in the air, and the phenomenon of "false tightening" is prone to occur between the bolts and the bolt ball, which makes it difficult to ensure the reliability of the connection, and the steel structure has serious safety hazards. In the welded ball joint connection, the structural members can be directly welded to the welded ball to complete the installation. However, due to the large number of structural members and the large amount of welding, the installation process is slow, which affects the construction progress. In addition, it is extremely inconvenient to perform welding in the air, and it is difficult to ensure the welding quality and the safety of the operators. The reliability of the welding is poor, and the steel structure also has certain safety hazards. In addition, in the interpenetrating welding or welded ball joint connection, a certain length of sleeve is generally added at the joint to facilitate the insertion of the rear-mounted member into the sleeve for welding. However, due to the need to leave enough space for welding, the addition of the sleeve may result in an increase in the diameter of the main pipe or the diameter of the welded ball, ultimately leading to an increase in the amount of steel used and a decrease in economic efficiency.

[0004] In the above-mentioned joint connection methods, there are problems of poor connection reliability and complex connection operation, which result in safety hazards of the connected steel structure. SUMMARY

[0005] Therefore, the present application provides a connecting joint and a steel structure to solve the problems of poor joint connection reliability and complex connection operation of the steel structure in the prior art, which result in safety hazards of the connected steel structure.

[0006] In a first aspect, the present application provides a connecting joint, comprising a first connecting plate, a second connecting plate, and a first fastening assembly. At least two first limiting grooves are arranged on one side of the first connecting plate and are distributed at intervals around the circumference of the first connecting plate. At least two second limiting grooves are arranged on one side of the second connecting plate and are distributed at intervals around the circumference of the second connecting plate. The positions and numbers of the first limiting grooves and the second limiting grooves are one-to-one corresponding. The first fastening assembly is detachably connected to the first connecting plate and the second connecting plate. The first limiting grooves and the second limiting grooves are mutually spliced to form a limiting hole, and a first member to be connected is adapted to be detachably inserted into the limiting hole.

[0007] Beneficial effects: The connection node provided by the present application can form at least two limiting holes at circumferential intervals of the connection node through the detachable connection of the first connecting plate and the second connecting plate, and the first rod members at different angles can be directly plugged into the connection node without welding, with strong operability, convenient and quick installation, and no increase in steel consumption due to the addition of a sleeve for convenient welding; and the limiting holes formed by the splicing of the first limiting groove and the second limiting groove form a constraint limit on the first rod member at the outer periphery of the first rod member, preventing the first rod member from sliding or swinging, making the overall stability of the structure stronger, the strength higher, the connection reliability good, and avoiding safety hazards in the steel structure after connection.

[0008] In an optional embodiment, it also includes a first baffle and a second baffle; the first baffle is arranged in the first limiting groove and is located in the first limiting groove at one end away from the outer edge of the first connecting plate; the second baffle is arranged in the second limiting groove and is located in the second limiting groove at one end away from the outer edge of the second connecting plate; the first baffle and the second baffle are arranged correspondingly and are suitable for limiting the first rod.

[0009] Beneficial effect: The arrangement of the first baffle and the second baffle can not only limit and transmit force for the end of the first rod, but also serve as ribs to enhance the strength of the first connecting plate and the second connecting plate.

[0010] In an optional embodiment, at least two of the first limiting grooves are cross-arranged, and the first baffle is arranged at the intersection position; at least two of the second limiting grooves are cross-arranged, and the second baffle is arranged at the intersection position.

[0011] Beneficial Effects: The at least two intersecting first limiting grooves facilitate processing and forming, and also increase the overall strength of the first connecting plate. Furthermore, after the two through-end first limiting grooves intersect, four first baffles are provided at the intersection to form four first limiting grooves, thereby increasing the number of first limiting grooves. The at least two intersecting second limiting grooves facilitate processing and forming, and also increase the overall strength of the second connecting plate. Furthermore, after the two through-end second limiting grooves intersect, four second baffles are provided at the intersection to form four second limiting grooves, thereby increasing the number of second limiting grooves.

[0012] In an optional embodiment, there are four first limiting grooves and four second limiting grooves, the four first limiting grooves are evenly distributed around the circumference of the first connecting plate, and the four second limiting grooves are evenly distributed around the circumference of the second connecting plate.

[0013] Beneficial effects: the first limiting groove and the second limiting groove each have four, and are uniformly distributed, can be spliced to form four limiting holes, and then the four first rod members can be inserted, limited and fixed.

[0014] In an alternative embodiment, the first connecting plate and the second connecting plate are regular octagons, having four straight sides and four oblique angle sides alternately arranged; each oblique angle side of the first connecting plate is provided with the first limiting groove, and each oblique angle side of the second connecting plate is correspondingly provided with the second limiting groove.

[0015] In an alternative embodiment, the first connecting plate is provided with a first connecting portion, the first connecting portion is arranged between two adjacent first limiting grooves, and the first connecting portion is provided with a first connecting hole; the second connecting plate is provided with a second connecting portion, the second connecting portion is arranged between two adjacent second limiting grooves, and the second connecting portion is provided with a second connecting hole; the first connecting hole and the second connecting hole are threadedly connected through the first fastening assembly.

[0016] In an alternative embodiment, further comprising:

[0017] a third connecting plate arranged at the outer periphery of the first connecting plate and fixedly connected with the first connecting portion;

[0018] a fourth connecting plate arranged at the outer periphery of the second connecting plate and fixedly connected with the second connecting portion;

[0019] One end of a second rod member to be connected is adapted to be detachably connected with the third connecting plate and the fourth connecting plate.

[0020] In an alternative embodiment, the third connecting plate is provided with a third connecting hole, and the fourth connecting plate is provided with a fourth connecting hole; an end portion of the second rod member is provided with an end plate, the end plate is connected with a fifth connecting plate, the fifth connecting plate is provided with a fifth connecting hole, the fifth connecting plate is arranged between the third connecting plate and the fourth connecting plate, and the third connecting hole, the fourth connecting hole and the fifth connecting hole are threadedly connected through a second fastening assembly.

[0021] In an alternative embodiment, further comprising a third fastening assembly, a first through hole is arranged at the first limiting groove, a second through hole is correspondingly arranged at the second limiting groove, and a pair of coaxial and oppositely arranged third through holes are arranged on the side wall of the first rod member, and the first through hole, the pair of third through holes and the second through hole are threadedly connected through the third fastening assembly.

[0022] In an alternative embodiment, the first limiting groove is formed by outwardly recessing the middle portion of the first connecting plate; and the second limiting groove is formed by outwardly recessing the middle portion of the second connecting plate.

[0023] In an alternative embodiment, the first rod is a cylindrical rod structure, and the first limiting groove and the second limiting groove are both semi-cylindrical grooves.

[0024] In a second aspect, the present application further provides a steel structure comprising a plurality of first rods to be connected and the connecting node as described above, wherein the first rods are respectively detachably inserted into the limiting holes. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0026] Figure 1 FIG. 1 is a schematic view of a first connecting node in an embodiment of the present application;

[0027] Figure 2 FIG. 2 is a schematic view of a first connecting plate of the first connecting node in the embodiment of the present application;

[0028] Figure 3 FIG. 3 is a top view of the first connecting plate of the first connecting node in the embodiment of the present application;

[0029] Figure 4 FIG. 4 is a bottom view of the first connecting plate of the first connecting node in the embodiment of the present application;

[0030] Figure 5 FIG. 5 is a schematic view of a second connecting plate of the first connecting node in the embodiment of the present application;

[0031] Figure 6 FIG. 6 is a bottom view of the second connecting plate of the first connecting node in the embodiment of the present application;

[0032] Figure 7 FIG. 7 is a top view of a second connecting node in an embodiment of the present application;

[0033] Figure 8 FIG. 8 is a bottom view of a first connecting plate of the second connecting node in the embodiment of the present application;

[0034] Figure 9 FIG. 9 is a top view of a third connecting node in an embodiment of the present application;

[0035] Figure 10 isometric view of the first connecting plate of the third connecting node in the embodiment of the present application;

[0036] Figure 11 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0037] Figure 12 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0038] Figure 13 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0039] Figure 14 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0040] Figure 15 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0041] Figure 16 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0042] Figure 17 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0043] Figure 18 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0044] Figure 19 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0045] Figure 20 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0046] Figure 21 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0047] Figure 22 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0048] Figure 23 isometric view of the first connecting plate of the fourth connecting node in the embodiment of the present application;

[0049] Figure 24It is a schematic view of a steel structure (single-layer oblique grid hyperbolic cooling tower structure) in an embodiment of the present application.

[0050] Figure 25 It is a schematic view of a steel structure (double-layer oblique grid hyperbolic cooling tower structure) in an embodiment of the present application.

[0051] Explanation of reference signs:

[0052] 100, connecting node; 200, first rod; 300, second rod; 400, steel structure; 1, first connecting plate; 11, first limiting groove; 12, first connecting part; 2, second connecting plate; 21, second limiting groove; 22, second connecting part; 3, limiting hole; 4, first fastening assembly; 5, first baffle; 6, second baffle; 7, third connecting plate; 8, fourth connecting plate; 9, second fastening assembly; 10, third fastening assembly. DETAILED DESCRIPTION

[0053] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described below in a clear and complete manner with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0054] The embodiments of the present application will be described below with reference to the drawings. Figures 1 to 25

[0055] According to the embodiments of the present application, in one aspect, the present application provides a connecting node 100, comprising a first connecting plate 1, a second connecting plate 2 and a first fastening assembly 4; one side of the first connecting plate 1 is provided with at least two first limiting grooves 11, and the at least two first limiting grooves 11 are distributed at intervals around the circumference of the first connecting plate 1; one side of the second connecting plate 2 is provided with at least two second limiting grooves 21, and the at least two second limiting grooves 21 are distributed at intervals around the circumference of the second connecting plate 2; the positions and quantities of the first limiting grooves 11 and the second limiting grooves 21 are one-to-one correspondingly arranged; the first fastening assembly 4 is detachably connected with the first connecting plate 1 and the second connecting plate 2, the first limiting grooves 11 and the second limiting grooves 21 are spliced with each other to form a limiting hole 3, and a first rod 200 to be connected is adapted to be detachably inserted into the limiting hole 3.

[0056] ​The connecting node 100 provided by the embodiment is detachably connected through the first connecting plate 1 and the second connecting plate 2, at least two limiting holes 3 are formed at the circumferential intervals of the connecting node 100, the first rod member 200 at different angles is directly inserted into the connecting node 100 for connection, welding is not needed, the operability is strong, the installation is convenient and fast, and the steel consumption is not increased due to the sleeve for facilitating welding; and the limiting hole 3 formed by splicing the first limiting groove 11 and the second limiting groove 21 restricts and positions the first rod member 200 at the outer periphery of the first rod member 200, prevents the first rod member 200 from sliding and swinging, makes the overall structure more stable and stronger, has good connection reliability, and avoids the security risks of the steel structure 400 after connection.

[0057] In one embodiment, the first baffle 5 and the second baffle 6 are further included; the first baffle 5 is arranged in the first limiting groove 11 and located at one end of the first limiting groove 11 away from the outer edge of the first connecting plate 1; the second baffle 6 is arranged in the second limiting groove 21 and located at one end of the second limiting groove 21 away from the outer edge of the second connecting plate 2; the first baffle 5 and the second baffle 6 are correspondingly arranged and adapted to limit the first rod member 200.

[0058] The arrangement of the first baffle 5 and the second baffle 6 not only limits and transmits the force of the end of the first rod member 200, but also enhances the strength of the first connecting plate 1 and the second connecting plate 2 as a rib plate.

[0059] Specifically, the first baffle 5 can be welded in the first limiting groove 11, or a sliding groove can be arranged in the first limiting groove 11 to detachably fix the first baffle 5. The second baffle 6 can be welded in the second limiting groove 21, or a sliding groove can be arranged in the second limiting groove 21 to detachably fix the second baffle 6. The shape of the first baffle 5 can match the shape of the first limiting groove 11, and the shape of the second baffle 6 can match the shape of the second limiting groove 21.

[0060] In one embodiment, the at least two first limiting grooves 11 are cross arranged, and the first baffle 5 is arranged at the cross position; the at least two second limiting grooves 21 are cross arranged, and the second baffle 6 is arranged at the cross position.

[0061] The at least two first limiting grooves 11 arranged in cross manner can facilitate the forming and increase the strength of the first connecting plate 1 as a whole; and after the two first limiting grooves 11 arranged in cross manner, four first limiting grooves 11 are formed by arranging four first limiting grooves 5 at the cross position, thereby increasing the number of the first limiting grooves 11. The at least two second limiting grooves 21 arranged in cross manner can facilitate the forming and increase the strength of the second connecting plate 2 as a whole; and after the two second limiting grooves 21 arranged in cross manner, four second limiting grooves 21 are formed by arranging four second limiting grooves 6 at the cross position, thereby increasing the number of the second limiting grooves 21.

[0062] In one embodiment, the first limiting grooves 11 and the second limiting grooves 21 are both four, and the four first limiting grooves 11 are uniformly distributed around the circumference of the first connecting plate 1, and the four second limiting grooves 21 are uniformly distributed around the circumference of the second connecting plate 2.

[0063] The first limiting grooves 11 and the second limiting grooves 21 are both four and are uniformly distributed, and can be spliced to form four limiting holes 3, thereby enabling the four first rod members 200 to be inserted, limited and fixed.

[0064] In one embodiment, the first connecting plate 1 and the second connecting plate 2 are both regular octagons with four straight sides and four oblique angle sides arranged alternately; each oblique angle side of the first connecting plate 1 is provided with a first limiting groove 11, and each oblique angle side of the second connecting plate 2 is provided with a corresponding second limiting groove 21.

[0065] The first connecting plate 1 and the second connecting plate 2 are both regular octagons, which facilitates the splicing of the first connecting plate 1 and the second connecting plate 2, ensures that the first limiting grooves 11 and the second limiting grooves 21 can be easily spliced to form the limiting holes 3, and the regular octagonal structure is also regular and facilitates the forming of the first limiting grooves 11 and the second limiting grooves 21. The first fastening assembly 4 can detachably connect the first connecting plate 1 and the second connecting plate 2 at the four straight angle sides, thereby avoiding affecting the strength of the first limiting grooves 11 and the second limiting grooves 21 by opening holes on the oblique angle sides.

[0066] In one embodiment, the first connecting plate 1 is provided with a first connecting portion 12 arranged between two adjacent first limiting grooves 11, and the first connecting portion 12 is provided with a first connecting hole; the second connecting plate 2 is provided with a second connecting portion 22 arranged between two adjacent second limiting grooves 21, and the second connecting portion 22 is provided with a second connecting hole; and the first connecting hole and the second connecting hole are threadedly connected by the first fastening assembly 4.

[0067] The first fastening assembly 4 is used for threadedly connecting, which is simple and convenient in connection mode and is easier to operate and has higher safety than welding.

[0068] The first fastening assembly 4 includes a first bolt and a first nut. One end of the first bolt is provided with a first nut, and the other end passes through the first connecting hole and the second connecting hole in sequence and is threadedly connected to the first nut, clamping the first connecting part 12 and the second connecting part 22 between the first nut and the first nut.

[0069] In one embodiment, a third connecting plate 7 and a fourth connecting plate 8 are further included; the third connecting plate 7 is arranged on the periphery of the first connecting plate 1 and is fixedly connected to the first connecting portion 12; the fourth connecting plate 8 is arranged on the periphery of the second connecting plate 2 and is fixedly connected to the second connecting portion 22; one end of the second rod 300 to be connected is suitable for detachable connection with the third connecting plate 7 and the fourth connecting plate 8.

[0070] The provision of the third and fourth connecting plates 7, 8 allows for the connection of a second rod 300 between the two limiting holes 3, increasing the number of rods that can be connected to the connection node 100 and allowing for a wider range of angles. Specifically, the third connecting plate 7 can be welded to the first connecting portion 12, and the fourth connecting plate 8 can be welded to the second connecting portion 22. Furthermore, the connection between the second rod 300 and the third and fourth connecting plates 7, 8 is detachable, eliminating the need for welding. This provides enhanced operability and facilitates quick and easy installation.

[0071] Specifically, each first connection portion 12 is connected to a third connection plate 7 , or only some of the first connection portions 12 are connected to the third connection plate 7 , and the third connection plates 7 and the fourth connection plates 8 are provided correspondingly.

[0072] In one embodiment, a third connecting hole is provided on the third connecting plate 7, and a fourth connecting hole is provided on the fourth connecting plate 8; an end plate is provided at the end of the second rod 300, and a fifth connecting plate is connected to the end plate, and a fifth connecting hole is provided on the fifth connecting plate, and the fifth connecting plate is arranged between the third connecting plate 7 and the fourth connecting plate 8, and the third connecting hole, the fourth connecting hole and the fifth connecting hole are threadedly connected by a second fastening assembly 9.

[0073] The second fastening assembly 9 is used for threaded connection, which is simple, easier to operate than welding, and has higher safety.

[0074] The second fastening assembly 9 includes a second bolt and a second nut. One end of the second bolt is provided with a second nut, and the other end is threadedly connected to the second nut after passing through the third connecting hole, the fifth connecting hole, and the fourth connecting hole in sequence, thereby sandwiching the third connecting plate 7, the fifth connecting plate, and the fourth connecting plate 8 between the second nut and the second nut. Specifically, after the first connecting portion 12 and the second connecting portion 22 abut, a connection gap can be formed between the third connecting plate 7 and the fourth connecting plate 8. The fifth connecting plate is inserted into the connection gap and is detachably connected by the second fastening assembly 9.

[0075] In one embodiment, a third fastening assembly 10 is further included, the first through hole is arranged at the first limiting slot 11, the second through hole is correspondingly arranged at the second limiting slot 21, and a pair of coaxial and opposite third through holes are arranged on the side wall of the first rod 200. The first through hole, the pair of third through holes and the second through hole are threadedly connected through the third fastening assembly 10.

[0076] When the force on the component connected by the connecting node 100 is large, in order to prevent the first rod 200 from deforming too much and coming out of the limiting hole 3, the first limiting slot 11, the first rod 200 and the second limiting slot 21 can be fastened through the third fastening assembly 10.

[0077] In the specific embodiment, the third fastening assembly includes a third bolt and a third nut, one end of the third bolt is provided with a third nut, and the other end is sequentially threaded through the first through hole, the third through hole and the second through hole and is threadedly connected with the third nut.

[0078] In one embodiment, the first limiting slot 11 is formed by outwardly recessing the middle part of the first connecting plate 1; and the second limiting slot 21 is formed by outwardly recessing the middle part of the second connecting plate 2.

[0079] The first limiting slot 11 is formed by recessing the first connecting plate 1, which is simple in forming mode and low in processing cost. The second limiting slot 21 is formed by recessing the second connecting plate 2, which is simple in forming mode and low in processing cost.

[0080] In one embodiment, the first rod 200 is a cylindrical rod structure, and the first limiting slot 11 and the second limiting slot 21 are both semicylindrical slots. The first limiting slot 11 and the second limiting slot 21 can be spliced into a circular hole matched with the shape of the first rod 200, further enhancing the limiting effect.

[0081] According to the embodiment of the present application, on the other hand, a steel structure 400 is provided, which includes a plurality of first rods 200 to be connected and the connecting node 100 described above; and the plurality of first rods 200 to be connected are respectively detachably inserted into at least two limiting holes 3.

[0082] In the embodiment, the steel structure 400 can be a single-layer oblique grid structure, for example, a single-layer oblique grid hyperbolic cooling tower structure, such as Figure 24As shown, the single-layer skew grid structure is connected by inserting the first rod 200 into the limiting hole 3 during installation. When the steel structure 400 is small in size and the steel structure 400 is under small stress, each first rod 200 is inserted into the limiting hole 3 and tightly connected with the first baffle 5 and the second baffle 6. When the steel structure 400 is large in size and the steel structure 400 is under large stress, in order to prevent the first rod 200 from deforming too much and coming out of the limiting hole 3, a third fastening assembly 10 can be arranged on the part of the first rod 200 inserted into the limiting hole 3, and the first limiting slot 11, the first rod 200 and the second limiting slot 21 are connected through the third fastening assembly 10 to make a secondary strengthening connection between the connecting node 100 and the first rod 200, so that the connecting node 100 is safe and reliable and has strong stability.

[0083] The steel structure 400 can also be a double-layer skew grid structure, for example, a double-layer skew grid hyperbolic cooling tower structure, as shown in Figure 25 As shown, the double-layer skew grid structure is composed of single trusses, each single truss being a standard unit, which is processed and assembled in a processing factory. If the size is large, the single trusses can be assembled on the project site. During hoisting, the two ends of the chord of each single truss are inserted into the limiting hole 3 of the connecting node 100 and tightly connected, that is, the chord of the single truss is the first rod 200, which is installed layer by layer to realize assembly construction, and the installation efficiency is greatly improved. When the steel structure 400 is under large stress, in order to prevent the first rod 200 from deforming too much and coming out of the limiting hole 3, the third fastening assembly 10 can be arranged on the part of the first rod 200 inserted into the limiting hole 3, and the first limiting slot 11, the first rod 200 and the second limiting slot 21 are connected through the third fastening assembly 10 to make a secondary strengthening connection between the connecting node 100 and the first rod 200, so that the connecting node 100 is safe and reliable and has strong stability.

[0084] When the single-layer skew grid structure and the double-layer skew grid structure need to be provided with horizontal and vertical rods or trusses, the third connecting plate 7 and the fourth connecting plate 8 can be connected at the first connecting part 12 and the second connecting part 22 of the connecting node 100 respectively, and the third connecting hole and the fourth connecting hole can be arranged on the third connecting plate 7 and the fourth connecting plate 8 respectively, and the end plate and the fifth connecting plate are arranged at the two ends of the horizontal and vertical rods or chords (that is, the second rod 300), and the fifth connecting hole is arranged on the fifth connecting plate, and the third connecting hole, the fourth connecting hole and the fifth connecting hole are threadedly connected through the second fastening assembly 9, so as to form a rice-shaped grid structure.

[0085] In a large-span arch truss structure, for example, Figure 22As shown, in order to ensure lateral stability, rigid cross braces are arranged, the distance between each arch truss is generally about 15m, the length of the cross brace is about 16-18m, the cross brace often has the characteristics of large length and large diameter, the length exceeds the transportation length, needs to be transported to the project site in two sections, then butt welding, the welding seam grade is first class, needs to be welded for weld detection, the process is complex, and the welding quality cannot be guaranteed. In the embodiment, the cross brace can be divided into two sections, connected by the connecting node 100, inserted and connected during installation, without welding; and the problem of the two ends of the welding ball protruding to cause the cross brace to be unable to be installed after installation and the need to increase the sleeve is avoided, the problem of the welding ball on the rod and the sleeve being insufficient in welding seam space due to the increase of the sleeve, thereby the diameter of the welding ball needs to be increased, and finally the problem of the increase of the steel amount is solved; and since the sleeve needs to be provided with 4-6 plug welding seams around, the length is about 300mm, the welding engineering quantity is increased, and when the connecting node 100 is used for connection, the connecting engineering quantity is also simplified. The connecting node 100 is arranged at the intersection node of the two cross braces, the cross brace is divided into four first rods 200, the first rod 200 is connected by inserting the limiting hole 3 of the connecting node 100, and the other end does not need to be provided with a sleeve, installation is convenient, and the welding engineering quantity is less. Therefore, the steel structure 400 can also be a rigid cross brace.

[0086] The steel structure 400 can also be a single-layer dome roof structure, as shown in FIG. 4. Figure 23 As shown, the connection of some rod members at the intersections is performed by the connecting node 100.

[0087] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A connection node, characterized in that: include: A first connecting plate (1) is provided with at least two first limiting grooves (11) on one side, and the at least two first limiting grooves (11) are distributed at intervals around the circumference of the first connecting plate (1); The second connecting plate (2) is provided with at least two second limiting grooves (21) on one side, and the at least two second limiting grooves (21) are distributed at intervals around the circumference of the second connecting plate (2); the positions and numbers of the first limiting grooves (11) and the second limiting grooves (21) are arranged in a one-to-one correspondence; A first fastening assembly (4) is detachably connected to the first connecting plate (1) and the second connecting plate (2); the first limiting groove (11) and the second limiting groove (21) are spliced ​​together to form a limiting hole (3); and the first rod (200) to be connected is suitable for being detachably inserted into the limiting hole (3); Also includes: A first baffle (5) is disposed in the first limiting groove (11) and is located at an end of the first limiting groove (11) away from the outer edge of the first connecting plate (1); A second baffle (6) is arranged in the second limiting groove (21) and is located at an end of the second limiting groove (21) away from the outer edge of the second connecting plate (2); the first baffle (5) and the second baffle (6) are correspondingly arranged and are suitable for limiting the first rod (200); At least two of the first limiting grooves (11) are arranged crosswise, and the first baffle (5) is arranged at the crosswise position; At least two of the second limiting grooves (21) are arranged crosswise, and the second baffle (6) is arranged at the crosswise position; The first connecting plate (1) is provided with a first connecting portion (12), the first connecting portion (12) is arranged between two adjacent first limiting grooves (11), and the first connecting portion (12) is provided with a first connecting hole; the second connecting plate (2) is provided with a second connecting portion (22), the second connecting portion (22) is arranged between two adjacent second limiting grooves (21), and the second connecting portion (22) is provided with a second connecting hole; the first connecting hole and the second connecting hole are threadedly connected via the first fastening assembly (4); Also includes: a third connecting plate (7), arranged on the outer periphery of the first connecting plate (1) and fixedly connected to the first connecting portion (12); a fourth connecting plate (8), arranged on the outer periphery of the second connecting plate (2) and fixedly connected to the second connecting portion (22); One end of the second rod (300) to be connected is suitable for being detachably connected to the third connecting plate (7) and the fourth connecting plate (8); The third connecting plate (7) is provided with a third connecting hole, and the fourth connecting plate (8) is provided with a fourth connecting hole; an end plate is provided at the end of the second rod (300), a fifth connecting plate is connected to the end plate, and a fifth connecting plate is provided with a fifth connecting hole, the fifth connecting plate is arranged between the third connecting plate (7) and the fourth connecting plate (8), and the third connecting hole, the fourth connecting hole and the fifth connecting hole are threadedly connected via a second fastening assembly (9).

2. The connection node according to claim 1, wherein: There are four of each of the first limiting grooves (11) and the second limiting grooves (21), the four first limiting grooves (11) are evenly distributed around the circumference of the first connecting plate (1), and the four second limiting grooves (21) are evenly distributed around the circumference of the second connecting plate (2); And / or, the first connecting plate (1) and the second connecting plate (2) are both regular octagons, having four straight sides and four beveled sides arranged alternately; each beveled side of the first connecting plate (1) is provided with the first limiting groove (11), and each beveled side of the second connecting plate (2) is correspondingly provided with the second limiting groove (21).

3. The connection node according to claim 1 or 2, characterized in that: The invention also includes a third fastening assembly (10), wherein a first through hole is provided at the first limiting groove (11), a second through hole is correspondingly provided at the second limiting groove (21), and a pair of coaxial and oppositely arranged third through holes are provided on the side wall of the first rod (200), and the first through hole, the pair of the third through holes and the second through hole are threadedly connected via the third fastening assembly (10).

4. The connection node according to claim 1 or 2, characterized in that: The first limiting groove (11) is formed by the middle portion of the first connecting plate (1) being recessed outwards; the second limiting groove (21) is formed by the middle portion of the second connecting plate (2) being recessed outwards; And / or, the first rod (200) is a cylindrical rod-shaped structure, and the first limiting groove (11) and the second limiting groove (21) are both semi-cylindrical grooves.

5. A steel structure, characterized in that: include: a plurality of first rods (200) to be connected; In the connection node according to any one of claims 1 to 4 above, the first rods (200) are detachably inserted into the limiting holes (3).

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