FI58552B - ANORDNING FOER SAMMANKOPPLING AV TVAO TUBER AV FLEXIBELT MATERIAL - Google Patents

Description

RSFH [B] (11) »uwlotusjulkai $ u cocto

figK £ lBJ '' UTLAeGNINGSSKRfFT

^ (51) K ».lk? /Im-a.3 1 16 L 31/00 FINLAND — FINLAND (21) 752816 (22) HUwn * p« Wt — Αι * β «ο * ι« · ^ 09-10.75 (23) Alkupllvt — GIM | tMtad * g 09-10-75 (41) Tullut JuIMmI * - «Mt off« KM (19-05-76 ITaUiittl · ·) »fki« frth »H> tut (4ft NBuMtalpuon | t taurtftiltahn pm.— P «t * nt · oeh rtfitCerttyralNn '' AnaMan uAjd och utUkrtfUn pubDearad 31-10.80 (32) (33) (31) Pyydetty MU0lkM» - 8 ^ IH prtorttet 18.11.71 »

Sweden-Sverige (SE) 7 ^ 1 ^ 29-6 (71) Les jöfors Plast AB, S-680 96 Lesjöfors, Sweden-Sverige (SE) (72) Einar Andersson, Lesjöfors, Sweden-Sverige (SE) (7 * 0 Berggren Oy Ab (51 *) Device for connecting two pipes made of flexible material -Anordning för samankoppling av tv & tuber av flexibelt material

The present invention relates to a device for joining two pipes of flexible material, in which device one pipe is adapted to be pulled over its end part over a second pipe, the end of which ends in a reinforcing ring, after which the circumferential clamp is adapted to be tightened so that the drawn pipe is pressed against the underlying pipe. in the region of the reinforcing ring, which ring then acts as a counterpart.

Very large pipes, often up to a couple of meters in diameter, are abundant as ventilation ducts in mining tunnels, tunnel structures, and the like. Because the material, usually a plastic-coated fabric, is flexible, the pipes are very difficult to handle during installation. Thus, in order to connect two pipes with a diameter of two meters with such a connecting device as mentioned in the introduction, an average of three hours of work for three men is often required under very difficult working conditions.

It is an object of the invention to substantially reduce the work required when connecting two pipes together with such a device as mentioned in the introduction. In this case, it has been noted that one of the reasons that the installation requires such a large amount of work in these large pipes is that the part of the pipe which is pulled over the other pipe on one side easily detaches when being pulled over the pipe on the other side. These inconveniences can be repeated several times before the pipe to be pulled on is in place and secured in position by a clamp, which in fact comprises a very large hose clamp.

By means of the invention, the above-mentioned problem is solved in that the device is characterized in that the protruding part of the drawn tube extends past the clamp and the reinforcing ring below and that the protruding part of the drawn tube and the corresponding part of the underlying tube are provided with means for temporarily connecting both tubes. to attach the joint.

Examples of suitable temporary joints are button joints, velcro straps and loops and hooks.

The invention will now be explained in more detail by describing a preferred embodiment of the invention. In this case, reference will be made to the accompanying drawing figures, in which Figure 1 is a perspective view of a connection between two pipes comprising a device according to the invention, and Figure 2 schematically shows a section through different parts of the connection.

Referring to the figures, the left-hand pipe is marked with the number 1 and the right-hand pipe with the number 2. A hose clamp 3 (Swedish model no. 12167) known per se is arranged for tight connection of both pipes. 4, with a round cut. The ring 4 is made of spring steel and forms the end of the right-hand tube 2, which tube is then bent around the ring 4. The part 10 bent around is welded against the inside of the tube 2, so that the ring 4 is permanently attached to the fold.

The left-hand pipe 1 is pulled by the part 5 over the right-hand pipe 2. The pipe clamp 3 presses against the right pipe 2 under the left pipe 1 in the region of the ring 4, as shown in Fig. 2.

Claims (4)

An apparatus for joining two flexible tubes, wherein the second tube is adapted to be pulled over its end portion over a second tube terminating in a reinforcing ring (4), after which a circumferential clamp (3) is adapted to radially press the drawn tube against the second tube. -in even in the area which the ring then acts as a counterpart, characterized in that the protruding part (5) of the pulled-up tube extends past the clamp (3) and the underlying reinforcing ring (4) and that the protruding part of the pulled-on tube and the corresponding part of the underlying tube are provided means (7, 8) for temporarily connecting both tubes before the clamp is placed to secure the joint. Device according to claim 1, characterized in that the temporary connecting means are buttonholes (7) in the protruding part and corresponding buttons (8) outside the tube below. Device according to claim 1, characterized in that the temporary connecting means are locally arranged backing strips inside the protruding part and respectively outside the tube below. According to an embodiment of the invention, the part 5 drawn on the left-hand pipe 1 has a number of buttonholes 7. The pipe 2 below is correspondingly provided with buttons 8 welded to the outside of the pipe 2 by fastening pads 9. The button connection 7,8 substantially serves to facilitate the assembly of both pipes. -nusta. The number of buttons and buttonholes should be at least three and preferably at least four. Instead of buttons and buttonholes, as mentioned in the introduction, it is also possible to use backing strips, which are then preferably fastened to the inside of the part 5 of the pipe pulled in place and to the outside of the pipe 2 below, respectively. Other fastening devices can also be considered, such as hooks and loops. What the patent seeks to protect is therefore not limited by the foregoing description of a few conceivable embodiments, but only by the following claims. Device according to Claim 1, characterized in that the temporary connecting means are hooks and loops.