Butt-joint for tubular rods

FIELD: building, particularly to create rod structures of pipes.

SUBSTANCE: butt-joint comprises tubular rod ends, ribs and tightening bolts. The ribs are inserted in cuts made in tubular rods and connected one to another in crossing areas along the full length thereof. Flanges are spaced from tubular rod ends.

EFFECT: reduced flange mass.

2 cl, 4 dwg

 

The invention relates to the field of construction, namely, the butt joints of tubular rods, and can be used in the mounting joints belts lattice structures.

You know the connection of tubular rods, including the ends of the pipes with flanges protruding dimensions of the tubular rod, tightened bolts ["Metal structures" edited Ehimare. M.: stroiizdat, 1986, str].

The lack of connection is the large dimensions of the flange and in a large thickness, since the flange operates as a plate, not supported by the protruding ends of the ribs.

Known joint connection of tubular rods, including the ends of the tubular rods with flanges, additional ribs and steel bolts installed along the perimeter of the pipe to a distance greater than the radius [Metal structures. The guide designer. V.1." Edited Nmelikov. M.: stroiizdat, 1986, str, ris.3.10].

The lack of connection is the large dimensions of the flange, which leads to increase in their weight.

Closest to the invention is the coupling joint of tubular rods, including flanges, ribs, attached to the ends of the tubular rods and flanges, and clamping bolts. Coupling bolts when it is placed in the cut made in the ribs [autospid. No. 1060773, MKI E 04 1/58, Bulletin No. 46 from 15.12.83,]. The placement of the article the author bolts in the cut edges allows to reduce the computational effort in the flanges and thereby reduce their thickness.

However, the implementation of joint leads to a significant increase in the overall dimensions of the flange that does not allow significant reduction of the mass of the flanges. In addition, at the ends of the ribs in the tubular elements have additional voltage, which requires increasing the thickness of the tubular rods or lengths of the edges.

The invention is directed to reducing the weight and size of the flanges.

The result is achieved that in butt connection of tubular rods, including flanges, ribs, attached to the ends of the tubular rods and flanges, and clamping bolts, flanges, installed with respect to the ends of the tubular rods with a gap, and the edges are inserted in the slots of the tubular rods and connected by a length at the intersection.

The result is also achieved by the fact that the ribs are made of different length.

Figure 1 shows a General view of a butt-joint tubular rods, figure 2 Dan cut 1-1 in figure 1; figure 3 and 4 show variants of the flanges, section 2-2 in figure 1.

Butt connection of tubular rods includes the ends of the tubular rods 1, which is made of the slot. The flanges 2 are set in relation to the ends of the tubular rods 1 with a gap. In slotted tubular rods 1 set of ribs 3 with welded thereto by flanges 2. The flanges 2 interconnected clamping bolts 4.

Stikova the connection is assembled as follows. The ends of the tubular rods 1 slots into which insert ribs 3, pre-welded between each other along the length of the intersection. The ends of the ribs before they are inserted into the slots or after installation on the welding attach the flanges 2 round (figure 3), square (figure 4) or other form. After installation of the ribs and flanges latest tighten the 4 bolts. For freedom of installation of the bolts, the flanges are separated from the ends of the tubular rods for a distance equal to A (figure 1). To avoid stress concentrations at the ends of the ribs and their length is made different, for example ribs in one direction by the amount "a" (figure 1) is longer than the ribs of the other direction. The ends of the tubular rods can be closed with plugs 5.

In the assembled state of the flanges of the proposed connection may have dimensions not exceeding the dimensions of the tubular rods. Butt connection of tubular rods allows coupling bolts as close to the ribs, which ultimately leads to reduction of the mass of the flanges 2-3 times.

1. Butt connection of tubular rods, including flanges, ribs, attached to the ends of the tubular rods and flanges, and clamping bolts, characterized in that the flanges are set in relation to the ends of the tubular rods with a gap, and the edges are inserted in the slots of the tubular rods and interconnected at length in m is the degree of intersection.

2. Joint connection of the tubular rod according to claim 1, characterized in that the ribs are made of different length.



 

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