DE7327542U - Height-adjustable tubular steel support - Google Patents

Description

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PAT B NT AN VV ALT S OFFICE 4 DÜSSELDORF SCHUMANN8TR. 97

PATENT LAWYERS: Dipl.-Ing. W. COHAUSZ Dipl.-Ing. W. FLORACK Dipl.-Ing. R. KNAUF Dr.-Ing., Dipl.-Wirtsdi.-Ine. A. GERBER

Hiinnebeck GmbH.
Lintorf near Düsseldorf

Height-adjustable tubular steel support

The invention relates to a height-adjustable tubular steel support made of two telescopic tubes, the inner one of which Tube distributed over its length has opposite pairs of holes and the outer tube at its upper end with a External thread is provided, the inner diameter of which is smaller than that of the outer tube. The stepless adjustment of a Such a support takes place in that a bolt is inserted through one of the pairs of holes in the inner tube, which is attached to its abutment takes place anywhere on the outer tube, for example on the upper edge of a welded to the upper end of the outer tube Male thread piece.

With such pipe supports there is a risk that during transport, for example by means of a crane, the inner tube slips upwards out of the outer tube. It has already been suggested to prevent such slipping out by securely attaching a transverse bolt to the lower end of the inner tube, the length of which is smaller than the inner diameter of the outer tube but is larger than the inner diameter of the male thread. Such an arrangement requires an extension of the inner tube downwards.

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The object of the invention is to secure the inner tube from slipping out of the outer tube without the inner tube extending w1 τή.

According to the invention, this object is achieved in that a coaxial pipe section is inserted into the lower end of the inner pipe is that protrudes only with an outwardly protruding flange from the lower end of the inner tube, the outer diameter of which is smaller than the inner diameter of the outer tube but larger than the inner diameter of one attached in the outer tube Stop is and with at least one punched out of its wall and pressed outward tab into an opening of the Wall of the inner tube protrudes.

The drawing shows an embodiment of the invention.

Fig. 1 shows a longitudinal section through the lower part of the inner tube and the upper part of the outer tube;

FIG. 2 shows a section along line II of FIG. 1.

The tubular steel support consists of an inner tube 1, which is • seated in an outer tube 7 so that it can be displaced longitudinally. A threaded piece 8 is welded onto the upper end 2es of the outer tube 7, the inner diameter of which is approximately? is smaller than the inner diameter of the outer tube 7 but is slightly larger than the outer diameter of the inner tube 1. The inner tube 1 has holes 10 distributed over its length, which are diametrically opposed to each other. A bolt 9 can be inserted through such a pair of holes Support is placed on the edge of the threaded piece 8 and thus determines the length of the support. The bolt 9 can be connected to the outer tube 7, for example by a chain.

In the lower end of the inner tube 1, a pipe section 3 is scored, the lower end of which is flanged outward. Of the

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The pipe section firmly connected to the inner pipe 1 by means of the tabs 5 thus prevents the inner pipe from being pulled out completely 1 from the outer tube 7, because the flanging ^! against the lower Edge of the threaded piece 8 strikes. The stop for the flange 4 can also consist of another part that is attached to the inner wall of the outer tube is attached, for example from a ring welded into the outer tube 7, the inner diameter of which is larger than the outer diameter of the inner tube

The length of the pipe section 3 inserted into the inner pipe can, for example, be as great as the outer diameter of the inner pipe 1. It is preferably not significantly greater than that Double or triple the diameter of the inner tube 1.

Expectations:

Claims (3)

I · · ■ · ■ till it ιι> · ι I III »>> 1 I t I 111 * 1! j I 1 Hünnebeck GmbH. Lintorf near Düsseldorf claims: 1. Hölian adjustable tubular steel support made of two slidable one inside the other Tubes, of which the inner tube has opposing holes distributed over its length and the outer tube at its upper end has an abutment for a bolt inserted into a pair of holes, characterized in that a coaxial pipe section (3) is inserted into the lower end of the inner pipe (1), the only with an outwardly protruding flange (4) from the lower end of the inner tube (1) says its outer diameter is smaller than the inner diameter of the outer tube but larger than the inner diameter of an im Outer tube (7) attached stop (8) and with at least one punched out of a wall and outward pressed flap (5) protrudes into an opening (2) of the wardung of the inner tube (1). 2. Steel tube support according to claim 1, characterized in that the stop (8) is a male thread piece welded to the upper end of the outer tube (7). 3. tubular steel support according to claim 1 or 2, characterized in that that the diameter of the pipe section (3) at its the Böi treatment (4) opposite end (6) is reduced.