Quality control method for the connection between curved cross and round pipe
A technology of connection quality and control method, applied in the direction of measuring devices, material magnetic variables, construction, etc., to achieve the effect of reducing the workload, ensuring overall stability and mechanical strength
Active Publication Date: 2017-11-28
ANHUI HONGLU STEEL CONSTR (GROUP) CO LTD
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Problems solved by technology
[0003] In the prior art, the steel pipe trusses are mainly cut and manufactured by a five-axis linkage intersecting line CNC cutting machine. The above-mentioned processing method can ensure the length of the web and chord and the structure of various grooves. There is no specific welding detection method for intersecting joints of steel pipe trusses in various space steel pipe truss structures
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[0015] The content of the present invention will be described below with reference to specific embodiments.
[0016] like figure 1 and figure 2 As shown, it is a structural schematic diagram of the connecting structure of the arc cross and the round pipe according to the present invention.
[0017] The arc-shaped cross and the circular tube connection structure of the present invention includes four arc-shaped chords 1 and a vertically arranged web rod 2, and the four arc-shaped chords 1 are arranged around the web rod 2 and are centrally symmetric On the axis of the web bar 2, the upper end of each arc chord 1 is connected to the web bar 2, and the extension line of the arc axis of the upper end of each arc chord 1 is at The tangent at the intersection of the axes of the web rods 2 is horizontal, and each connection between the arc-shaped chord 1 and the web rod 2 is provided with an intersecting node, and each intersecting node includes a welding toe 11 , welding edge 13...
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The invention discloses a method for controlling the quality of the connection between an arc-shaped cross and a round tube. The connection structure between an arc-shaped cross and a round tube includes four arc-shaped chord bars and one web bar. Each of the arc-shaped chord bar and the web bar An intersecting node is provided at the connection. Each intersecting node includes a welding toe, a welding edge and a welding root. A straight probe with a frequency of 2.5 Mhz is selected to measure the arc-shaped chord and the web. The outer surface of the connection is inspected for flaw detection, and the welding toe and the welding edge are inspected. The inspection results of the welding toe and the welding edge are qualified if there are no longitudinal defects or transverse defects; the nominal refraction angle is selected as Use a 70° inclined probe to detect the welding root, and if there are no lateral defects, it is qualified. The invention can timely control the degree of welding reinforcement of the web bar and the chord bar, thereby avoiding welding deformation caused by excessive welding reinforcement.
Description
technical field [0001] The invention relates to a quality control method for connecting an arc-shaped cross and a circular pipe, and belongs to the technical field of connection detection of an arc-shaped cross and a circular pipe. Background technique [0002] The space steel pipe truss structure is a space supporting steel structure that is often used in public buildings such as airports, gymnasiums, and exhibition centers. The space steel pipe truss structure has the advantages of high rigidity, good geometric properties, simple construction and material saving. The connection method of the through nodes simplifies the node structure, makes the connection of the secondary components more convenient, and makes the single component more stable. The space steel tube truss structure mainly has the following common structures: an intersecting node structure composed of a vertical connection between a web and a chord; an intersecting node structure composed of a web and two cho...
Claims
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IPC IPC(8): E04B1/38G01N33/00G01N27/84
CPCG01N27/84G01N33/00E04B1/38G01N33/0078
Inventor 开金伟孟凡利
Owner ANHUI HONGLU STEEL CONSTR (GROUP) CO LTD