Connecting structure of steel pipes
By setting steel pipe sections and bent extension plates in a welded structure on the longitudinal steel pipe, the strength of the steel pipe connection is enhanced, the problem of easy breakage of the transverse steel pipe is solved, and a higher load-bearing capacity is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XUCHANG JUNFU STEEL STRUCTURE ENGINEERING CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-08
AI Technical Summary
In existing steel pipe connection structures, the transverse steel pipes are prone to breakage at the weld joints, affecting the load-bearing capacity.
A steel pipe section is installed on the longitudinal steel pipe. The left end of the steel pipe section has a protruding piece. The protruding piece is bent and welded in the insertion hole. The transverse steel pipe is inserted into the free section of the steel pipe section and welded to ensure a more secure connection.
It improves the load-bearing capacity of steel pipe connections and prevents transverse steel pipes from breaking or deforming at the connection points with longitudinal steel pipes.
Smart Images
Figure CN224209307U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connecting steel pipes, and more specifically to the connecting structure of steel pipes. Background Technology
[0002] The steel pipe connection structure, also known as the connecting steel pipe, consists of two steel pipes: a longitudinal steel pipe and a transverse steel pipe. The left end of the transverse steel pipe is welded to the right side of the longitudinal steel pipe. In the prior art, the transverse steel pipe of the steel pipe connection structure does not have other reinforcing components; it relies solely on the left end of the transverse steel pipe being welded to the right side of the longitudinal steel pipe. This has the disadvantage that the transverse steel pipe is prone to breakage at the weld, affecting the load-bearing strength of the connecting steel pipe. For example, the transverse steel pipe is easily broken at the connection point. Summary of the Invention
[0003] The purpose of this utility model is to address the above-mentioned shortcomings by providing a steel pipe connection structure that has strong load-bearing capacity and makes it difficult for the transverse steel pipe to break or deform at the connection point with the longitudinal steel pipe.
[0004] The technical solution of this utility model is implemented as follows: A steel pipe connection structure includes two steel pipes, namely a longitudinal steel pipe and a transverse steel pipe. The left end of the transverse steel pipe is welded to the right side of the longitudinal steel pipe. The structure further includes a steel pipe section, the outer circumference of which is designed to fit the inner circumference of the transverse steel pipe. The left end of the steel pipe section has left-facing extension plates on its upper and lower sides, namely an upper extension plate and a lower extension plate. The upper and lower sides of the longitudinal steel pipe each have through-holes on both sides, namely an upper insertion hole and a lower insertion hole. The upper protruding piece is inserted into the upper insertion hole, and the upper protruding piece has an upward bending structure at the left end of the upper insertion hole. This bending structure is an upward bending structure, and the free end of the upward bending structure is welded to the longitudinal steel pipe. The lower protruding piece is inserted into the lower insertion hole, and the lower protruding piece has a downward bending structure at the left end of the lower insertion hole. This bending structure is a downward bending structure, and the free end of the lower bending structure is welded to the longitudinal steel pipe. The steel pipe section has a free section at the right end of the longitudinal steel pipe, and the left end of the transverse steel pipe is also inserted into the free section for connection.
[0005] Furthermore, the length of the free section is not less than five times the height of the transverse steel pipe.
[0006] Furthermore, the protruding piece is also welded to the left end of the insertion hole.
[0007] The beneficial effects of this utility model are: such a steel pipe connection structure has the advantages of strong load-bearing capacity and the transverse steel pipe is not easy to break or deform at the connection of the longitudinal steel pipe. Attached Figure Description
[0008] Figure 1 This is a schematic diagram of the longitudinal section structure of this utility model.
[0009] Figure 2 yes Figure 1 A schematic diagram of the A-A direction.
[0010] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure along the B-B direction.
[0011] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure along the C-C direction.
[0012] Among them: 1. Longitudinal steel pipe 11, insertion hole 111, upper insertion hole 112, lower insertion hole 2, transverse steel pipe 3, steel pipe section 31, protruding piece 311, upper protruding piece 3111, upper bending structure 31111, free end at the upper bending structure 312, lower protruding piece 3121, lower bending structure 31211, free end at the lower bending structure 32, free section 41, first welding material 42, second welding material 43, third welding material. Detailed Implementation
[0013] The present invention will be further described below with reference to the accompanying drawings.
[0014] like Figure 1 , 2As shown in Figure 3, a steel pipe connection structure includes two steel pipes, namely a longitudinal steel pipe 1 and a transverse steel pipe 2. The left end of the transverse steel pipe is welded to the right side of the longitudinal steel pipe. The welding material formed by this welding is the first welding material, as shown in Figure 41. Its characteristic is that it also includes a steel pipe section 3. The outer circumference of the steel pipe section is a structure that matches the inner circumference of the transverse steel pipe. The left end of the steel pipe section has left-facing extension pieces 31 on its upper and lower sides, namely an upper extension piece 311 and a lower extension piece 312. The upper and lower sides of the longitudinal steel pipe have left-right through insertion holes 11, namely an upper insertion hole 111 and a lower insertion hole 112. The upper protruding piece is inserted into the upper insertion hole, and the upper protruding piece has an upward bending structure at the left end of the upper insertion hole. This bending structure is the upper bending structure 3111. The free end 31111 of the upper bending structure is welded to the longitudinal steel pipe. The welding material formed by this welding is the second welding material, as shown in Figure 42. The lower protruding piece is inserted into the lower insertion hole, and the lower protruding piece has a downward bending structure at the left end of the lower insertion hole. This bending structure is the lower bending structure 3121. The free end 31211 of the lower bending structure is welded to the longitudinal steel pipe. The steel pipe section has a free section 32 at the right end of the longitudinal steel pipe, and the left end of the transverse steel pipe is also inserted into the free section for connection.
[0015] Due to the above structural design, the longitudinal and transverse steel pipes are more firmly connected, thus achieving the purpose of this utility model.
[0016] Furthermore, the length of the free section is not less than five times the height of the transverse steel pipe.
[0017] Furthermore, the protruding piece is also welded to the left end of the insertion hole, and the weld material formed by this welding is a third weld material, as shown in Figure 43.
[0018] The above-mentioned features of this utility model can make the connection between the steel pipe section and the longitudinal steel pipe more secure.
[0019] Furthermore, the left end of the transverse steel pipe is also connected to the free section with an interference fit.
[0020] The above-mentioned features of this utility model can make the connection between the steel pipe section and the transverse steel pipe more secure.
[0021] The name of this utility model can also be a composite steel pipe.
[0022] The above description is only a specific embodiment of the present utility model, but the structural features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.
Claims
1. A connection structure for steel pipes, comprising two steel pipes, namely a longitudinal steel pipe and a transverse steel pipe, wherein the left end of the transverse steel pipe is welded to the right side of the longitudinal steel pipe, characterized in that: It also includes a steel pipe section, the outer circumference of which is designed to fit the inner circumference of the transverse steel pipe. The left end of the steel pipe section has left-facing extensions at its upper and lower ends, namely an upper extension and a lower extension. The upper and lower ends of the longitudinal steel pipe each have through-holes, namely an upper insertion hole and a lower insertion hole. The upper extension is inserted into the upper insertion hole, and at its left end, it has an upward bend (an upward bend), which welds the free end of the upper bend to the longitudinal steel pipe. The lower extension is inserted into the lower insertion hole, and at its left end, it has a downward bend (a downward bend), which welds the free end of the lower bend to the longitudinal steel pipe. The steel pipe section has a free section at the right end of the longitudinal steel pipe, and the left end of the transverse steel pipe is also inserted into this free section for connection.
2. The connection structure of the steel pipe according to claim 1, characterized in that: The length of the free section shall not be less than 5 times the height of the transverse steel pipe.
3. The connection structure of the steel pipe according to claim 1, characterized in that: The protruding piece is also welded to the left end of the insertion hole.
4. The connection structure of the steel pipe according to claim 1, characterized in that: The left end of the transverse steel pipe is also connected to the free section with an interference fit.