DE7243026U - Plug connection for tubular steel supports, tubular frames and the like - Google Patents

Description

PATENT Attorney DIPL-ING. WOLFGANG BRINGMANN

4 Düsseldorf 11, Rheinallee 130

FIX CONCRETE Sehal- 81 November 1972

and Rttatgeräte OrnbH

4340 N eu M u
Faithful Str. 435

Plug connection for tubular steel supports, tubular scaffolding »and the like»

The invention relates to a plug-in connection for steel pipe supports, pipe scaffolding and the like with a lower pipe part, deaaen Kndatttck exnen has a smaller diameter and in the end of an upper Rehrteila engages

In a known connector of this type, the lower tube part has an annular bead on which the attached upper tube part comes to rest. The joined However, pipes must necessarily point in the area of the overlap win game, the cost of which can be up to 3 µm Λ Under load there is always a risk that the axes of the two pipe parts against each other and the resulting Eccentricity has a detrimental effect on the load capacity and the flexural rigidity of the connector. the The cause of the eccentricity increases with the number of one above the other arranged connectors and achieved z. B. in scaffolding of 25 * 30 m H6 * he a size that is the same for the static Calculation of such Ctorttste must be taken into account muA. In practice, however, “is difficult because the exact QrSBe of the eccentricity is difficult to determine mathematically.

It has therefore already been proposed that the upper pipe part

12 O8I - 2 -

to expand conically to a certain length dler & rt, de ·· the lower pipe part can be inserted into the upper part Joining the parts together creates a preaaaaaung, through which the parts are centered without internal play, but form an inseparable connection under load.

The charge is based on the task of a plug of the the above-mentioned type ao so that the pipe parts to be connected mesh centrally with one another without play, without thereby the detachability of the pin binding is impaired.

The object is achieved by the fact that according to the invention Part with the coarser Durebne ■ aer the · lower pipe parts · conically merges into the end piece and the upper pipe part la area of its end pieces is conically widened in such a way that that it can be pushed onto the old part, the larger diameter of the lower tube part and old my conical dumbbell « area on the correspondingly formed ITlMehe of the lower one Tube parts rests

A plug-in connection is created on these wines, in which the pipe parts interlock centrically and the parts themselves very easy to loosen again after heavy loads IKAt · Beyond that, the forces are centered in the pipe parts from above initiated, whereby both the load-bearing capacity and the stability of z. B. Rohrgertteten increased, their Scaffolding elements using the aforementioned plug connection are composed.

An exemplary embodiment is explained in more detail with reference to the drawing, which shows a longitudinal section through the plug connection according to the invention represents.

The plug connection shown consists of an upper pipe part 1 and a lower pipe part 2 of components such as those used, for example, in scaffolding. The upper pipe part 1 has a conical jacket surface 3 which merges into a widened end piece k , the shower knife of which is larger than the remaining part 5 of the upper pipe part. The lower part is correspondingly

/24302629.8.74

Pipe part 2 is formed _f "ias just falling · a conical Mant elf has 6, which merges into liadstttek 7 , |

the diameter of which is in turn smaller than that of the rest of j

Part 8 of the lower pipe part. The diameter in the area of the j Toils 8 corresponds to that of part 5 and is equal to the pipe ι

strength of the for the Oterttstbeu or for tubular steel supports

turned tube ·· The angle of the conical surfaces is «wake-up \

moderately chosen so that the in the plane of the surface |

running force component of a j acting in the pipe axis

Force is as small as possible. _: The two pipe parts in assembling a corresponds \

speaking support structure pushed so far into each other,;

until the relevant, conically shaped nantal surfaces to the An «I

situation come. In this way a plug connection is created, \

in which the pipes are in the area of the fitting surface under load j

Center j automatically and turn off any inner game.

The total length of two nested tubes is itself
constant under heavy loads. This is especially true
essential if the connector is used when assembling frame-like supporting structures, so that a
Rigid frame-like connection is created for one or more frames pushed into one another.

TO ..

Pat o ~ a ~~ r Bn s ρ r u c h ι

Claims (1)

FIX BETONBAU Formwork · - and WSiUt advises «OmbH % O% OH eu · ·
Qladbaeher Str. 435 NSPRUC Λ Plug connection for tubular steel equipment, tubular equipment and the like. With a lower pipe barrel, whose Bndstttck has a smaller diameter and in the volume elnea upper tube part · engages, thereby marked, that part (8) with the larger diameter of the lower ear parts (2) conically into the end piece (7) and the upper Pipe part (1) is widened conically in the region of its end piece (4t) so that it is on the part (7) with the larger diameter of the lower pipe part · (2) can be pushed on and with its conical jacket «» flee (3) on the appropriately trained flee (6) of the lower pipe part (2) rests