Rod end reducing welding ball joint with taper pipe

Abstract

The utility model discloses a rod end reducing welding ball joint with a taper pipe. The rod end reducing welding ball joint comprises a round pipe rod piece, the taper pipe, a small-diameter round pipe and a welding ball. Wherein the annular ribs are arranged at the two ends of the taper pipe, the four vertical stiffening ribs are arranged between the two annular ribs, the circular pipe rod piece is connected with one end of the taper pipe through the butt weld, the other end of the taper pipe is connected with the small-diameter circular pipe through the butt weld, and the small-diameter circular pipe is connected with the welding ball through the butt weld. The taper pipe containing the annular ribs and the vertical stiffening ribs and the small-diameter round pipe are ingeniously introduced between the rod piece and the welding ball, so that the welding ball joint has the advantages of reducing the diameter of the welding ball, reducing the steel consumption and the overall weight of the welding ball joint, enhancing the strength and the stability of the welding ball joint, and improving the welding quality of the welding ball joint. And meanwhile, the process difficulty of field installation is remarkably reduced, the project progress is accelerated, considerable economic benefits are brought to the project, and the method can be widely applied to the field of structural engineering.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of large-span space grid structure, concretely to a rod end shrinkage welding ball node containing a taper pipe. BACKGROUND

[0002] The net rack structure is a kind of commonly used space truss structure, and it is widely applied in large-span coal shed, gymnasium and airport and other facilities due to good stress performance, large space stiffness, economic safety, standardized production and installation.The node of net rack is space node, and the number of gathered bars is more, and comes from different directions, and the structure is more complex.Therefore, whether the design of net rack node is reasonable directly influences the stress performance of whole structure, production and installation, steel consumption and engineering cost etc., and it is one of important links in net rack design.

[0003] The node of large-span space grid structure is mainly divided into bolt ball node and welding ball node.The bolt ball is solid ball, so when the diameter of ball body is larger, the weight of bolt ball is larger, leading to excessive total steel consumption and weight of structure.The welding ball is hollow ball, is suitable for larger diameter ball node, and bars are directly welded on the surface of ball body, and the amount of field welding is large, due to the diameter of bar being larger or due to the reason of bar angle being smaller, so the diameter of welding ball is very large, thereby causing excessive steel consumption and weight of node and structure, and being not conducive to field construction. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a kind of rod end shrinkage welding ball node containing taper pipe, can effectively reduce the diameter of welding ball, thereby reduce the steel consumption, weight and field workload of welding ball node.

[0005] The utility model technical scheme is as follows: a kind of rod end shrinkage welding ball node containing taper pipe, including round pipe bar, taper pipe, small diameter round pipe and welding ball.The two ends of taper pipe are provided with ring rib, and there are four vertical stiffening ribs between the two ring ribs, round pipe bar is connected with one end of taper pipe by butt weld, the other end of taper pipe is connected with small diameter round pipe by butt weld, and small diameter round pipe is connected with welding ball by butt weld.

[0006] Preferably, the wall thickness of the taper pipe is the same, and the pipe diameter gradually decreases along the direction from the end connected to the round pipe to the end connected to the small diameter round pipe.

[0007] Preferably, the minimum cross-sectional area of the taper pipe is 1.1-1.2 times the cross-sectional area of the round pipe bar.

[0008] Preferably, the ratio of the outer diameter of the small diameter round pipe to the outer diameter of the round pipe bar is in the range of 0.5-0.7.

[0009] Preferably, the cross-sectional area of the small diameter round pipe is 1.1-1.2 times the cross-sectional area of the round pipe bar.

[0010] Preferably, a welding bevel is provided between the round tube rod and the small-diameter round tube and the tapered tube.

[0011] The beneficial effects of this utility model are as follows: Compared with traditional welded ball joints, this utility model cleverly introduces a tapered tube containing ring ribs and vertical stiffening ribs and a small-diameter round tube between the rod and the welded ball, which has many advantages. It can reduce the diameter of the welded ball, reduce the amount of steel used and the overall weight of the welded ball joint, and enhance the strength of the welded ball joint. At the same time, the connection of the round tube rod, tapered tube, ring ribs, vertical stiffening ribs and small-diameter round tube can be completed in the factory, realizing standardized and industrialized production. This not only ensures the quality of the project, but also significantly reduces the difficulty of on-site installation, greatly accelerates the project progress, and brings considerable economic benefits. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic cross-sectional view of the connection between the small-diameter circular tube and the tapered tube of this utility model.

[0014] Explanation of reference numerals in the attached drawings: 1-Circular tube; 2-Welded ball; 3-Small diameter circular tube; 4-Conical tube; 5-Ring rib; 6-Vertical stiffening rib Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings of the embodiments.

[0016] like Figure 1 As shown, the tapered tube 4 is provided with two 5-ring ribs, and there are four 6-vertical stiffening ribs between the 5-ring ribs. A small-diameter round tube 3 and a tapered tube 4 of the same material as the round tube 1 are provided between the round tube member 1 and the welded ball 2. The round tube member 1 and the small-diameter round tube 3 are connected to the tapered tube 4 by a butt weld to form a whole. The small-diameter round tube 3 and the welded ball 2 are connected by a butt weld.

[0017] like Figure 1 As shown, the tapered tube 4 has the same wall thickness, and the tube diameter gradually decreases from the end connecting the circular tube rod to the end connecting the small-diameter circular tube.

[0018] like Figure 1 As shown, the minimum cross-sectional area of ​​the tapered tube 4 is 1.1-1.2 times the cross-sectional area of ​​the circular tube rod 1.

[0019] like Figure 1 As shown, the ratio of the outer diameter of the small-diameter circular tube 3 to the outer diameter of the circular tube rod 1 is in the range of 0.5-0.7.

[0020] As shown in Figure 1 The cross-sectional area of the small-diameter circular tube 3 is 1.1-1.2 times the cross-sectional area of the circular tube rod 1.

[0021] Finally, it should be pointed out that the above examples are merely intended to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and all such modifications or replacements should be included in the scope of the claims of the present application.

Claims

1. A reduced diameter welded spherical joint for a rod end containing a taper tube, characterized by: The pipe rod comprises a round pipe, a taper pipe, a small diameter round pipe and a welded ball, wherein the taper pipe is provided with ring ribs at two ends, four vertical stiffening ribs are arranged between the two ring ribs, the round pipe is connected with one end of the taper pipe through butt welding, the other end of the taper pipe is connected with the small diameter round pipe through butt welding, and the small diameter round pipe is connected with the welded ball through butt welding.

2. The cone-in-pipe rod end reduced diameter welded spherical node of claim 1, wherein: The wall thickness of the taper pipe is the same, and the pipe diameter gradually decreases along the direction from the end connected with the round pipe to the end connected with the small diameter round pipe.

3. The cone-in-pipe rod end reduced diameter welded spherical node of claim 1, wherein: The minimum cross-sectional area of the taper pipe is 1.1-1.2 times the cross-sectional area of the round pipe.

4. The cone-in-pipe rod end reduced diameter welded spherical node of claim 1, wherein: The ratio of the outer diameter of the small diameter round pipe to the outer diameter of the round pipe is 0.5-0.

7.

5. The cone-in-pipe rod end reduced diameter welded spherical node of claim 1, wherein: The cross-sectional area of the small diameter round pipe is 1.1-1.2 times the cross-sectional area of the round pipe.

6. The reduced diameter welded spherical node of a tubular end of a shaft according to any of claims 1-5, characterized in that: The round pipe and the small diameter round pipe are provided with welding grooves between the round pipe and the taper pipe and between the small diameter round pipe and the taper pipe.

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