Node connection structure

Abstract

The present invention discloses a node connection structure, which includes a first profile, a second profile, and a connection structure for connecting the first profile and the second profile. The first profile is connected to the second profile to form a hollow inner cavity. The connection structure is disposed in the inner cavity and abuts against the inner cavity on multiple surfaces. The connection structure includes a first connection plate and a second connection plate that are connected to each other. Since the connection structure is placed in the inner cavity of the first profile and the second profile and abuts against the inner cavity on multiple surfaces, there is no moving gap between the connection structure and the inner cavity, so that the node connection structure has good rigidity, good seismic resistance, and is structurally stable and beautiful.

Description

Technical Field

[0001] The present invention relates to the technical field of profile connection, and particularly to a node connection structure. Background Art

[0002] In existing marquees or other structures that need to be erected, when encountering node connections during erection, external clip-type bolt installation or internal part-type screw connection is usually adopted; both external clip-type bolt installation and internal part-type screw connection adopt ordinary bolt installation methods. When the nut is pre-tightened, the side wall of the profile is deformed, resulting in the inability to tighten between the bolt and the nut. There is no frictional force between the external clip or internal part and the side wall of the profile, and the load is mainly borne by the extrusion of the hole wall. The hole wall is easily damaged, and the node bearing capacity is poor. In addition, there is a gap between the external clip-type bolt and the connection hole. When the node is stressed, relative sliding will occur between the bolt and the hole wall, resulting in rotation of the node position. When the profile is relatively long, large displacement will occur in the structure, and the rigid connection effect cannot be achieved, and the node rigidity is poor. When using the internal part connection method, the specification of the internal part is smaller than the inner cavity of the profile, and there is no surface contact between the profile and the internal part, and the node is prone to rotation and has poor rigidity.

[0003] Therefore, there is an urgent need for a node connection structure with a simple structure that can eliminate the gap between the profile and the connection structure, so that the node connection has good rigidity and strong earthquake resistance. Summary of the Invention

[0004] The purpose of the present invention is to provide a node connection structure with a simple structure, good connection rigidity and strong earthquake resistance.

[0005] To achieve the above object, the present invention provides a node connection structure, including a first profile, a second profile, and a connection structure for connecting the first profile and the second profile. The first profile is connected to the second profile to form a hollow inner cavity. The connection structure is arranged in the inner cavity and abuts against the inner cavity on multiple surfaces. The connection structure includes a first connecting plate and a second connecting plate connected to each other.

[0006] Compared with the prior art, the node connection structure provided by the present invention, due to including a first profile, a second profile, and a connection structure for connecting the first profile and the second profile, and the connection structure is placed in the inner cavity of the first profile and the second profile and abuts against the inner cavity on multiple surfaces, so that the first profile and the second profile are in surface contact with the connection structure. Surface contact can generate a large frictional force to bear the load, so that the bolt is not sheared and the hole wall is not extruded, and the node has a good rigid effect. In addition, the connection structure is connected by two connecting plates, and the connection is closer. The node will not be affected by vibration and has good earthquake resistance.

[0007] Preferably, the inner cavity includes a top wall and a bottom wall which are oppositely arranged. The first connecting plate includes an upper surface and a lower surface which are oppositely arranged. The lower surface abuts against the bottom wall, and an included angle is formed between the upper surface and the top wall. The lower surface of the first connecting plate is parallel to and abuts against the bottom wall of the inner cavity, and a space with an included angle is formed between the upper surface and the top wall for installing the second connecting plate. The structure is simple and the connection effect is good.

[0008] Preferably, the second connecting plate is installed between the upper surface and the top wall and abuts against the upper surface and the top wall. The second connecting plate enters the inner cavity from the wide-mouth end of the included angle and presses the upper surface and the top wall, so that there is no gap between the upper surface and the top wall. The structure is compact and there will be no sliding. The connection of the node will not affect the rigidity due to vibration, and the seismic resistance is good.

[0009] Preferably, the second connecting plate has a structure with a gradually decreasing cross-section. The second connecting plate enters the included angle space from the small end first, so that the second connecting plate can fill the entire included angle space. The structure is compact and there will be no sliding. The connection of the node will not affect the rigidity due to vibration, and the seismic resistance is good.

[0010] Preferably, the inner cavity further includes two side walls. A limiting block is arranged on the side surface of the first connecting plate away from the side wall. The limiting block is fixed on the side surface and protrudes from the upper surface. The second connecting plate is connected to the first connecting plate along a preset track by means of the limiting block. By providing a protruding limiting block, when the second connecting plate cooperates with the first connecting plate, it can slide along the upper surface of the first connecting plate and will not deviate from the first connecting plate. The structure is simple and the design is reasonable.

[0011] Preferably, the top wall and / or the bottom wall are provided with rib plates for limiting. The second connecting plate is connected to the first connecting plate along a preset track by means of the rib plates. By providing rib plates for limiting in the inner cavities of the first profile and the second profile, after installing the first connecting plate, a limiting space is formed between the upper surface and / or the lower surface of the first connecting plate, the side walls of the inner cavity and the rib plates, so that when the second connecting plate cooperates with the first connecting plate, it can slide along the upper surface of the first connecting plate and will not deviate from the first connecting plate. The structure is simple and the design is reasonable.

[0012] Preferably, a through first connection hole is formed in the side wall, and a through second connection hole is formed in the side surface. The first connection hole is screwed to the second connection hole to install the first connecting plate in the inner cavity. First connection holes are formed in the side walls of the first profile and the second profile, and a second connection hole is formed in the side surface of the first connecting plate. The first connection hole and the second connection hole are connected by bolts. The structure is simple and the connection is stable.

[0013] Preferably, a first screw hole is formed on the upper surface, and a through second screw hole is formed on the second connecting plate. The first screw hole is screwed into the second screw hole to fix the second connecting plate to the first connecting plate. After the second connecting plate is placed in the included angle space without shaking, the first connecting plate and the second connecting plate are connected together by screws, and the structure is more stable.

[0014] Preferably, a long strip hole is formed through the top wall, and a third screw hole is formed on the second connecting plate. The long strip hole is screwed into the third screw hole to fix the second connecting plate to the first profile or the second profile. By forming a long strip hole on the profile, the second connecting plate can be locked to the first profile or the second profile through the long strip hole at any position of the first connecting plate. The long strip hole has stronger adaptability and is more convenient for installation.

[0015] Preferably, a convex portion is further provided on the upper surface to determine that the second connecting plate is installed in place by means of the convex portion. By providing the convex portion, the first connecting plate can be clamped between the first profile and the second profile during installation, and the convex portion can limit the second connecting plate. The structure is simple and the design is reasonable.

[0016] Preferably, a chamfered portion is provided at the end of the second connecting plate to relieve the contact between the second connecting block and the convex portion by means of the chamfered portion. By providing a chamfered portion at the end of the second connecting plate, the second connecting plate can be prevented from directly colliding with the convex portion. By providing a chamfered portion, a buffering effect can be achieved. The structure is simple and the design is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of a node connection structure provided by an embodiment of the present invention.

[0019] Figure 2 is Figure 1 a schematic exploded view of the node connection structure in

[0020] Figure 3 is Figure 1 a schematic structural diagram of the first profile in

[0021] Figure 4 is Figure 1 a schematic internal structure diagram of the first profile in

[0022] Figure 5 is Figure 1 a schematic structural diagram of the connection structure in

[0023] Figure 6 is Figure 5 An enlarged view of the structure at location A in

[0024] Figure 7 is Figure 5 A schematic diagram of the structure of the first connecting plate in

[0025] Figure 8 is Figure 5 A schematic diagram of the structure of the second connecting plate in

[0026] Description of reference numerals:

[0027] 100, Node connection structure; 101, Inner cavity;

[0028] 10, First profile; 11, First connection hole; 12, Longitudinal slot; 13, Rib plate;

[0029] 20, Second profile;

[0030] 30, First connecting plate; 31, Limiting block; 32, Protrusion; 33, Second connection hole; 34, First screw hole;

[0031] 40, Second connecting plate; 41, Chamfered part; 42, Second screw hole; 43, Third screw hole. Detailed implementation mode

[0032] In order to elaborate in detail on the technical content and structural features of the present invention, the following further explanations are provided in conjunction with the implementation modes and with reference to the accompanying drawings.

[0033] Please refer to Figure 1 and Figure 2 , the present invention provides a node connection structure 100, which includes a first profile 10, a second profile 20, and a connection structure for connecting the first profile 10 and the second profile 20. The first profile 10 is connected to the second profile 20 through the connection structure and forms a hollow inner cavity 101. Specifically, the connection structure is arranged in the inner cavity 101 and abuts against the inner cavity 101 on multiple sides. The connection structure includes a first connecting plate 30 and a second connecting plate 40 that are connected to each other.

[0034] After adopting the above technical solution, the node connection structure 100 provided by the present invention includes a first profile 10, a second profile 20, and a connection structure for connecting the first profile 10 and the second profile 20. The connection structure is placed in the inner cavity 101 of the first profile 10 and the second profile 20 and abuts against the inner cavity 101 on multiple sides, so that there is no clearance between the connection structure and the inner cavity 101, and the first profile 10 and the second profile 20 are in surface contact with the connection structure. The surface contact can generate a large frictional force to bear the load, so that the bolts are not sheared and the hole walls are not extruded, and the node has good rigidity. In addition, the connection structure is connected by two connecting plates, the connection is tighter, the node will not be affected by vibration and the rigidity is good, and the earthquake resistance is good.

[0035] Please refer to Figure 2 and Figure 3 , in some alternative embodiments, the inner cavity 101 includes a top wall and a bottom wall arranged opposite to each other. The first connecting plate 30 includes an upper surface and a lower surface arranged opposite to each other. The lower surface abuts against the bottom wall, and an included angle (not shown in the figure) is formed between the upper surface and the top wall. It can be understood that the lower surface of the first connecting plate 30 is parallel to the bottom wall of the inner cavity 101 and abuts against the bottom wall, and a space with an included angle is formed between the upper surface and the top wall. The included angle space is used to install the second connecting plate 40, and the structure is simple and the connection effect is good. Of course, included angles can also be provided on both the upper surface and the lower surface of the first connecting plate 30, and then the second connecting plate 40 is used to cooperate with the included angle space at both the upper and lower ends, so that there is no clearance between the entire connection structure and the inner cavity 101, and the structure is more stable. As long as there is an included angle between the first connecting plate 30 and the inner cavity 101 to install the wedge-shaped second connecting plate 40, the included angle space can exist on the upper surface, the lower surface, or both surfaces, and the present invention does not limit this.

[0036] Please refer to Figures 2 to 5 , in some alternative embodiments, the second connecting plate 40 is installed between the upper surface of the first connecting plate 30 and the top wall of the inner cavity 101, and the second connecting plate 40 abuts against the upper surface and the top wall, that is, the second connecting plate 40 is installed in the included angle space and abuts against the upper surface of the first connecting plate 30 and the top wall of the inner cavity 101 respectively. It can be understood that the second connecting plate 40 enters the inner cavity 101 from the wide-mouth end of the included angle until the second connecting plate 40 squeezes the upper surface and the top wall, so that there is no clearance between the upper surface and the top wall, the structure is compact, there is no sliding, and the connection of the node will not be affected by vibration and the rigidity is good, and the earthquake resistance is good.

[0037] Please refer to Figure 8, in some alternative embodiments, the second connecting plate 40 has a structure with a gradually decreasing cross-section, that is, a wedge-shaped structure. It can be understood that the second connecting plate 40 enters the included angle space from the small end first, so that the second connecting plate 40 can fill the entire included angle space, with a compact structure, no sliding will occur, and the connection of the node will not affect the rigidity due to vibration, and it has good seismic resistance.

[0038] Please refer to Figures 3 to 7 , in some alternative embodiments, the inner cavity 101 further includes two side walls. The first connecting plate 30 is installed on the side of the inner cavity 101 away from the side walls, and a limiting block 31 is provided. The limiting block 31 is fixed to the side and protrudes from the top surface, so that the second connecting plate 40 is connected to the first connecting plate 30 according to a preset trajectory. The limiting block 31 can be fixed to the first connecting plate 30 by welding or the like, or integrally formed with the first connecting plate 30 when the first connecting plate 30 is formed. In this embodiment, the protruding limiting block 31 is provided, so that when the second connecting plate 40 cooperates with the first connecting plate 30, the second connecting plate 40 slides between the limiting block 31 and the side wall of the inner cavity 101 along the upper surface of the first connecting plate 30. It can be understood that the preset trajectory is the trajectory along which the second connecting plate 40 is installed on the upper surface of the first connecting plate 30, that is, the second connecting plate 40 will not deviate from the first connecting plate 30, with a simple structure and reasonable design.

[0039] Please refer to Figure 4 , in some alternative embodiments, the top wall and / or the bottom wall are provided with rib plates 13 for limiting, so that the second connecting plate 40 is connected to the first connecting plate 30 according to a preset trajectory. By providing rib plates 13 for limiting in the inner cavity 101 of the first profile 10 and the second profile 20, after the first connecting plate 30 is installed, a limiting space is formed between the upper surface and / or the lower surface of the first connecting plate 30, the side wall of the inner cavity 101 and the rib plates 13, so that when the second connecting plate 40 cooperates with the first connecting plate 30, it slides along the upper surface and / or the lower surface of the first connecting plate 30 and will not deviate from the first connecting plate 30. It can be understood that after the rib plates 13 are provided, the first connecting plate 30 does not need to be provided with a protruding limiting block 31, with a simpler structure and more convenient forming. The preset trajectory is the trajectory along which the second connecting plate 40 is installed on the upper surface of the first connecting plate 30, that is, the second connecting plate 40 will not deviate from the first connecting plate 30, with a simple structure and reasonable design.

[0040] Please refer to Figure 3 and Figure 4, in some alternative embodiments, a through first connection hole 11 is provided on the side wall, and a through second connection hole 33 is provided on the side surface. The first connection hole 11 is screwed into the second connection hole 33 so that the first connection plate 30 is installed in the inner cavity 101. The first connection holes 11 are provided on the side walls of both the first profile 10 and the second profile 20. The outer shape of the first connection plate 30 matches the outer shapes of the first profile 10 and the second profile 20. A second connection hole 33 is provided on the side surface of the first connection plate 30. The first connection hole 11 and the second connection hole 33 are connected by bolts, so that the first connection plate 30 is fixed to the first profile 10 and the second profile 20. The structure is simple and the connection is firm. The first profile 10, the second profile 20, the first connection plate 30, and the second connection plate 40 can respectively be made of various metal materials such as steel and copper. The present invention places no restrictions on the material.

[0041] Please refer to Figure 7 and Figure 8 , in some alternative embodiments, a first screw hole 34 is provided on the upper surface of the first connection plate 30, and a through second screw hole 42 is provided on the second connection plate 40. The first screw hole 34 is screwed into the second screw hole 42 so that the second connection plate 40 is fixed to the first connection plate 30. It can be understood that after the second connection plate 40 is placed in the angular space without shaking, the first connection plate 30 and the second connection plate 40 are connected together by screws, and the structure is more stable.

[0042] Please refer to Figure 3 and Figure 4 , in some alternative embodiments, a long through hole 12 is provided on the top wall, and a third screw hole 43 is provided on the second connection plate 40. The long through hole 12 is screwed into the third screw hole 43 so that the second connection plate 40 is fixed to the first profile 10 or the second profile 20. It can be understood that by providing the long through hole 12 on the first profile 10 and the second profile 20, the second connection plate 40 can be locked to the first profile 10 or the second profile 20 through the long through hole 12 regardless of its position relative to the first connection plate 30. The long through hole 12 has stronger adaptability and is more convenient for installation.

[0043] Please refer to Figure 7 , in some alternative embodiments, a convex portion 32 is further provided on the upper surface. By means of the convex portion 32, it can be determined that the second connection plate 40 has been installed in place. Additionally, by providing the convex portion 32, the first connection plate 30 can be clamped between the first profile 10 and the second profile 20 during installation, playing a role of pre-positioning when the first connection plate 30 cooperates with the first profile 10 and the second profile 20. Moreover, the convex portion 32 can limit the second connection plate 40. The structure is simple and the design is reasonable.

[0044] Please refer to Figure 8, in some alternative embodiments, a chamfered portion 41 is provided at the end of the second connecting plate 40, and the chamfered portion 41 is used to ease the contact between the second connecting block and the convex portion 32. It can be understood that providing the chamfered portion 41 at the end of the second connecting plate 40 can prevent the second connecting plate 40 from directly colliding with the convex portion 32. The chamfered portion 41 can play a buffering role, with a simple structure and reasonable design.

[0045] The node connection structure 100 of the present invention can adopt the following connection method, including the following connection steps:

[0046] Provide the first profile 10, the second profile 20, the first connecting plate 30 and the second connecting plate 40. The first profile 10 and the second profile 20 are connected through the first connecting plate 30 to form a structure with a hollow inner cavity 101.

[0047] The first connecting plate 30 is respectively screwed and fixed to the first profile 10 and the second profile 20, and an included angle is formed between the first connecting plate 30 and the top wall of the inner cavity 101;

[0048] Place the second connecting plate 40 at the included angle, and tap the second connecting block so that the second connecting block abuts against the first connecting plate 30 and the first profile 10 / the second profile 20;

[0049] Screw and fix the first connecting plate 30 and the second connecting plate 40, and screw and fix the second connecting plate 40 and the first profile 10 / the second profile 20.

[0050] In the node connection method of the present invention, first, the first profile 10 and the second profile 20 are connected together through the first connecting plate 30, and the first connecting plate 30 is built inside the first profile 10 and the second profile 20, which is an internal connection structure. Then, the first connecting plate 30 is fixed to the first profile 10 and the second profile 20 with screws. The side surface and the bottom surface of the first connecting plate 30 abut against the inner cavity 101, and an included angle space is formed between the top surface of the first connecting plate 30 and the inner cavity 101. The second connecting plate 40 is installed in the included angle space, and then the second connecting plate 40 is gradually made to enter the included angle space by tapping, and the second connecting plate 40 is made to abut against the inner cavity 101 and the first connecting plate 30, so that there is no clearance between the first connecting plate 30 and the profile, the connection is tight, the node will not be affected by vibration in terms of rigidity, and the seismic resistance is good. Finally, the first connecting plate 30 and the second connecting plate 40 are locked with screws, and the second connecting plate 40 and the first profile 10 and the second profile 20 are locked, making the structure more stable.

[0051] Compared with the prior art, the node connection structure 100 provided by the present invention includes a first profile 10 and a second profile 20, as well as a connection structure for connecting the first profile 10 and the second profile 20. The connection structure is placed in the inner cavity 101 of the first profile 10 and the second profile 20 and abuts against the inner cavity 101 on multiple surfaces, so that there is no clearance between the connection structure and the inner cavity 101. It can be understood that the first profile 10 and the second profile 20 are in surface contact with the connection structure, and the surface contact can generate a large frictional force to bear the load, so that the bolts are not sheared and the hole walls are not extruded, and the node has good rigidity. In addition, the connection structure is connected by two connecting plates, the connection is tighter, the node will not affect the rigidity due to vibration, and the seismic resistance is good. In the present invention, the first connecting plate 30 and the second connecting plate 40 can be processed by laser, which can be applied to connection nodes at any angle, and has high precision and guaranteed quality. In addition, the connection structure is built in the first profile 10 and the second profile 20, which is more beautiful and reliable.

[0052] The above-disclosed are only the preferred examples of the present invention, and the scope of the rights of the present invention cannot be limited thereby. Therefore, all equivalent changes made according to the claims of the present invention are within the scope covered by the present invention.

Claims

1. A node connection structure, characterized in that, It includes a first profile, a second profile, and a connecting structure for connecting the first profile and the second profile. The first profile is connected to the second profile to form a hollow inner cavity. The connecting structure is disposed in the inner cavity and abuts against the inner cavity on multiple surfaces. The connecting structure includes a first connecting plate and a second connecting plate connected to each other. The inner cavity includes a top wall and a bottom wall disposed opposite to each other. The first connecting plate includes an upper surface and a lower surface disposed opposite to each other. The lower surface abuts against the bottom wall, and an included angle is formed between the upper surface and the top wall. The second connecting plate is installed between the upper surface and the top wall and abuts against the upper surface and the top wall. The inner cavity further includes two side walls. A limiting block is disposed on a side surface of the first connecting plate away from the side wall. The limiting block is fixed to the side surface and protrudes from the upper surface. The second connecting plate slides between the limiting block and the side wall of the inner cavity along the upper surface of the first connecting plate; or, a rib plate for limiting is disposed on the top wall, and the second connecting plate is connected to the first connecting plate along a preset track by means of the rib plate.

2. The node connection structure according to claim 1, characterized in that, The second connecting plate has a structure with a gradually decreasing cross-section.

3. The node connection structure according to claim 1, characterized in that, A through first connection hole is formed in the side wall, and a through second connection hole is formed in the side surface. The first connection hole is screwed to the second connection hole to install the first connecting plate in the inner cavity.

4. The node connection structure according to claim 1, characterized in that, A first screw hole is formed in the upper surface, and a through second screw hole is formed in the second connecting plate. The first screw hole is screwed to the second screw hole to fix the second connecting plate to the first connecting plate.

5. The node connection structure according to claim 1, characterized in that, A through elongated hole is formed in the top wall, and a third screw hole is formed in the second connecting plate. The elongated hole is screwed to the third screw hole to fix the second connecting plate to the first profile or the second profile.

6. The node connection structure according to claim 1, characterized in that, A convex portion is further disposed on the upper surface to determine that the second connecting plate is installed in place by means of the convex portion; a chamfered portion is disposed at the end of the second connecting plate to relieve the contact between the second connecting block and the convex portion by means of the chamfered portion.

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