Single-layer grid roof circular steel tube joint connecting structure

Abstract

The utility model discloses a single-layer grid roof round steel pipe joint connecting structure which comprises a first round pipe and a second round pipe, one end of the first round pipe is provided with a connecting piece used for being connected with the second round pipe, a plurality of supporting ribs are evenly distributed on the peripheral wall of the second round pipe in the circumferential direction, and the supporting ribs are arranged in the length direction of the second round pipe. The connecting piece is arranged on the peripheral wall of the second round pipe in a sleeving mode and can be matched with the supporting rib for positioning, a limiting part is arranged on the connecting piece, and the round pipe and steel pipe joint is stable in connection, high in connecting strength, convenient to position, simple in structure and convenient to install.

Description

Technical Field

[0001] The utility model relates to the technical field of grid roofs, in particular to a circular steel pipe node connection structure for a single-layer grid roof. Background Art

[0002] The circular steel pipe node of a single-layer grid roof is an important part of grid structure technology and is often used in the roof construction of public buildings and industrial facilities. The circular steel pipe has a high inertia radius and an effective torsional cross-section. Its shape can effectively resist wind force, and it is easy to transport and has a beautiful building appearance. It is often used as a component of the grid roof. Its node connection usually adopts intersecting welding: that is, the intersecting line is cut on the circular steel pipe and welded to another circular steel pipe. The bearing performance of the existing circular steel pipe node is closely related to the welding strength. However, due to the special shape of this circular steel pipe node, the welding difficulty is relatively high. Workers are often prone to incomplete welding, slag inclusion, etc. during welding, which leads to a reduction in the overall bearing performance. In addition, the grid roof made of this circular steel pipe is large in size, not easy to repair later, and has a short service life. The connected nodes are prone to deformation or reduced bearing capacity. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the utility model provides a single-layer grid roof circular steel pipe node connection structure, which has stable connection, high bearing capacity, easy positioning, simple structure and convenient installation.

[0004] To achieve the above-mentioned purpose, the utility model provides a single-layer grid roof circular steel tube node connection structure, comprising a first circular tube and a second circular tube, wherein one end of the first circular tube is provided with a connecting piece for connecting to the second circular tube, and the outer circumferential wall of the second circular tube is evenly distributed with a plurality of supporting ribs, and the supporting ribs are arranged along the length direction of the second circular tube, the connecting piece is sleeved on the outer circumferential wall of the second circular tube and can cooperate with the supporting ribs for positioning, and a limiting portion is provided on the connecting piece.

[0005] The above technical solution can produce the following effects: through the coordinated positioning of the connecting piece and the supporting ribs, the connection between the first circular tube and the second circular tube can be made more secure, preventing relative displacement caused by external forces; the supporting ribs are evenly arranged along the circumference of the second circular tube, which is conducive to dispersing the load and improving the stability and bearing capacity of the structure; the use of the connecting piece makes the installation process simpler, and only needs to put the connecting piece on the second circular tube and coordinate with the supporting ribs for positioning, and the adjustment process is simple; the setting of the limit part further improves the reliability of the connection, prevents the connecting piece from falling off or shifting when subjected to force, and ensures safety for long-term use; the structural design can adapt to circular tubes of different diameters and has good versatility and adaptability.

[0006] The utility model is further provided with: the connecting piece includes a first part and a second part, the first part and the second part are combined to form a ring sleeve with an opening, the ring sleeve is sleeved on the outer circumferential wall of the second circular tube, one end of the first part is connected to the first circular tube, and the other end is provided with a bolt, one end of the second part is connected to the first circular tube, and the other end is provided with a connecting hole for threaded connection with the bolt, and the first part and the second part can cooperate to clamp the second circular tube.

[0007] The above technical solution can produce the following effects: the first part and the second part are combined to form an annular structure with an opening, which can be sleeved on the outer circumferential wall of the second circular tube; one end of the first part is connected to the first circular tube, and the other end is equipped with a bolt for fastening the connection; the second part is also connected to the first circular tube, but the other end is provided with a connecting hole, which is threadedly engaged with the bolt of the first part to achieve connection. This structure enables the first and second parts to cooperate with each other to effectively clamp the second circular tube, thereby achieving a stable connection; this connection structure can adapt to circular tubes of different diameters, ensuring a tight and reliable connection, while also facilitating disassembly and maintenance.

[0008] The present invention is further provided with: the limiting portion is a plurality of limiting grooves which are evenly distributed in the first part and the second part corresponding to the positions of the supporting ribs, the bottom of each limiting groove is arranged at the same horizontal position, and the supporting ribs are plugged into and matched with the limiting grooves.

[0009] The effect that can be produced by adopting the above technical solution is: a number of limit grooves are evenly distributed in the first part and the second part to ensure the plug-in fit between the support ribs and the limit grooves; this structure makes the bottom of each limit groove located at the same horizontal position, thereby ensuring the stability and consistency of the structure; such a layout not only improves the support efficiency of the overall structure, but also facilitates installation and maintenance. The support ribs can be easily aligned and fixed with the limit grooves. In addition, the evenly distributed limit groove design also helps to disperse the load and enhance the durability and reliability of the structure.

[0010] The present invention is further configured as follows: the limiting groove has an arc-shaped bottom, and the supporting rib has an arc-shaped end corresponding to one end of the limiting groove bottom.

[0011] The above technical solution can produce the following effects: by setting up a curved bottom and a curved end for connection, the adaptability of the same shape is higher, and the curved bottom and the curved end are more likely to fit tightly, thereby improving the stability of the connection.

[0012] The present invention is further provided with: the first part and the second part are both provided with at least one fixing hole for fixing with a second round tube bolt.

[0013] The effect produced by adopting the above technical solution is that the provision of fixing holes can facilitate strengthening the fixing strength of the first part and the second part to the first round tube after being connected, thereby improving the connection stability.

[0014] The utility model is further provided with: inclined surfaces are provided on both end faces of the first part and the second part corresponding to the axial direction of the circular tube.

[0015] The effect produced by adopting the above technical solution is that the provision of the inclined surface can prevent dust from accumulating easily between the first part and the second part, thereby avoiding adhesion at the joint caused by dust accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a partial practical state of an embodiment of the utility model;

[0017] Figure 2 A partial cross-sectional view of an embodiment of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of a connecting piece according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0019] The present invention provides an embodiment of a single-layer grid roof circular steel pipe node connection structure as shown in the figure. In order to achieve the above-mentioned purpose, the present invention provides a single-layer grid roof circular steel pipe node connection structure, including a first circular pipe 1 and a second circular pipe 2, wherein one end of the first circular pipe 1 is provided with a connector 3 for connecting with the second circular pipe 2, and the outer peripheral wall of the second circular pipe 2 is uniformly provided with a plurality of support ribs 21 in the circumferential direction, and the support ribs 21 are arranged along the length direction of the second circular pipe 2, and the connector 3 is sleeved on the outer peripheral wall of the second circular pipe 2 and can cooperate with the support ribs 21 for positioning. A limiting portion is provided on the connecting piece 3. By coordinating and positioning the connecting piece 3 with the supporting rib 21, the connection between the first circular tube 1 and the second circular tube 2 can be made more secure, and relative displacement caused by external force can be prevented; the supporting rib 21 is evenly arranged along the circumference of the second circular tube 2, which is conducive to distributing the load and improving the stability and bearing capacity of the structure; the setting of the connecting piece 3 makes the installation process simpler, and only needs to put the connecting piece 3 on the second circular tube 2 and cooperate with the supporting rib 21 for positioning, and the adjustment process is simple; the setting of the limiting portion further improves the reliability of the connection and prevents the connection from The connecting member 3 does not fall off or shift when subjected to force, ensuring the safety of long-term use; the structural design can adapt to round tubes of different diameters and has good versatility and adaptability; the connecting member 3 includes a first part 31 and a second part 32, the first part 31 and the second part 32 are combined to form a ring sleeve with an opening, the ring sleeve is sleeved on the outer peripheral wall of the second round tube 2, one end of the first part 31 is connected to the first round tube 1, and the other end is provided with a bolt 33, one end of the second part 32 is connected to the first round tube 1, and the other end is provided with a bolt for connecting with the bolt 3 3 is matched with a connecting hole 34 for threaded connection. The first part 31 and the second part 32 can cooperate to clamp the second circular tube 2. The first part 31 and the second part 32 are combined to form an annular structure with an opening, which can be sleeved on the outer peripheral wall of the second circular tube 2. One end of the first part 31 is connected to the first circular tube 1, and the other end is equipped with a bolt 33 for fastening. The second part 32 is also connected to the first circular tube 1, but the other end is provided with a connecting hole 34, which is connected to the bolt 33 of the first part 31 through threaded cooperation. The structure enables the first part 31 and the second part 32 to cooperate with each other to effectively clamp the second circular tube 2, thereby achieving a stable connection; this connection structure can adapt to circular tubes of different diameters, ensure the tightness and reliability of the connection, and facilitate disassembly and maintenance; the limiting portion is a plurality of limiting grooves 35 uniformly arranged on the first part 31 and the second part 32 corresponding to the position of the support rib 21, and the bottom of each of the limiting grooves 35 is arranged at the same horizontal position. The support rib 21 is plugged into the limiting grooves 35. The plurality of limiting grooves 35 are uniformly arranged on the first part 31 and the second part 32 to ensure the plug-in fit between the support rib 21 and the limiting grooves 35;This structure makes the bottom of each limiting groove 35 be at the same horizontal position, thereby ensuring the stability and consistency of the structure; such a layout not only improves the supporting efficiency of the overall structure, but also facilitates installation and maintenance, and the support ribs 21 can be easily aligned with and fixed to the limiting grooves 35. In addition, the uniformly distributed limiting grooves 35 design also helps to disperse the load and enhance the durability and reliability of the structure; the limiting grooves 35 have an arc-shaped bottom 36, and the support ribs 21 have an arc-shaped end 37 at one end corresponding to the bottom of the limiting groove 35. The arc-shaped bottom 36 and the arc-shaped end 37 are arranged for connection, and the same shape has a higher adaptability, and the arc-shaped bottom 36 and the arc-shaped end 37 are used for connection, which makes it easier to fit tightly, thereby improving the stability of the connection; the first part 31 The first and second parts 31 and 32 are both provided with at least one fixing hole 38 for fixing with a bolt 33 of the second round tube 2. The setting of the fixing hole 38 can facilitate the first part 31 and the second part 32 to strengthen the fixing strength with the first round tube 1 after being connected, thereby improving the connection stability; the first part 31 and the second part 32 are both provided with inclined surfaces 39 at both end faces corresponding to the axial direction of the round tube. The setting of the inclined surfaces 39 can prevent dust from easily accumulating in the first part 31 and the second part 32, thereby avoiding adhesion of the connection caused by dust accumulation. When implementing this solution, those skilled in the art first place the two round tubes to be welded opposite each other, that is, place them corresponding to their welding points, and then weld the opposite parts of the round tubes by traditional welding methods. In order to make up for the difference In the event of insufficient welding strength, slag inclusion, etc., a person skilled in the art can respectively connect the first part 31 and the second part 32 to the support ribs 21 on the outer wall of the second circular tube 2, and weld one end thereof to the first circular tube 1, and connect the other end thereof by a bolt 33 and clamp the second circular tube 2. The first part 31 and the second part 32 in this solution have slight elasticity, and this elasticity enables the first part 31 and the second part 32 to be slightly deformed when connected by the bolt 33, and is used to clamp an object set between the first part 31 and the second part 32. After that, a person skilled in the art can further pass the bolt 33 for strengthening the fixation through the fixing holes 38 on the first part 31 and the second part 32 and tighten it to the second circular tube 2. For strong fixation, when the volume of the circular tube is small, those skilled in the art may first securely install the first portion 31 and the second portion 32 at one end of the first circular tube 1. Thereafter, the second circular tube 2 is passed through the annulus formed between the first portion 31 and the second portion 32. When the first portion 31 and the second portion 32 reach the position of the support rib 21 on the second circular tube 2, those skilled in the art will insert the limiting grooves 35 on the first portion 31 and the second portion 32 into the corresponding positions of the support rib 21, so that the curved end of the support rib 21 reaches the bottom of the limiting groove 35 until it is fully inserted. Thereafter, those skilled in the art will first connect the first portion 31 and the second portion 32 with the bolt 33, and then insert the bolt 33 through the fixing hole 38 to connect it to the second circular tube 2.

[0020] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A circular steel tube node connection structure for a single-layer grid roof, characterized by: It includes a first circular tube and a second circular tube, wherein one end of the first circular tube is provided with a connecting piece for connecting to the second circular tube, and the outer circumferential wall of the second circular tube is evenly distributed with a plurality of supporting ribs, and the supporting ribs are arranged along the length direction of the second circular tube. The connecting piece is sleeved on the outer circumferential wall of the second circular tube and can cooperate with the supporting ribs for positioning, and a limiting portion is provided on the connecting piece.

2. The circular steel tube node connection structure for a single-layer grid roof according to claim 1, characterized in that: The connecting piece includes a first part and a second part, and the first part and the second part are combined to form a ring sleeve with an opening, and the ring sleeve is arranged on the outer circumferential wall of the second circular tube. One end of the first part is connected to the first circular tube, and the other end is provided with a bolt. One end of the second part is connected to the first circular tube, and the other end is provided with a connecting hole for threaded connection with the bolt. The first part and the second part can cooperate to clamp the second circular tube.

3. The circular steel tube node connection structure for a single-layer grid roof according to claim 2, characterized in that: The limiting portion is a plurality of limiting grooves evenly distributed on the first part and the second part corresponding to the positions of the supporting ribs. The bottom of each limiting groove is set at the same horizontal position, and the supporting ribs are plugged into the limiting grooves.

4. The circular steel tube node connection structure for a single-layer grid roof according to claim 3, characterized in that: The limiting groove has an arc-shaped bottom, and the supporting rib has an arc-shaped end corresponding to one end of the limiting groove bottom.

5. The circular steel tube node connection structure for a single-layer grid roof according to claim 2, characterized in that: The first part and the second part are both provided with at least one fixing hole for fixing with a second round tube bolt.

6. The circular steel tube node connection structure for a single-layer grid roof according to claim 2, characterized in that: Both end surfaces of the first part and the second part corresponding to the axial direction of the circular tube are provided with inclined surfaces.

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