DE10143306C1 - Angled pipe used for changing the direction of a pipeline has a molded socket end and an insertion end for connecting to the corresponding ends of a linear pipe unit - Google Patents

Abstract

Angled pipe has at least one end surface tilted at an angle to the pipe axis and having a molded socket end (13) or an insertion end (14) for connecting to a linear pipe unit. The socket or insertion end fit into the corresponding ends of the linear pipe unit. Preferred Features: The angled pipe has a circular or elliptical inner cross-section.

Description

The invention relates to an angled pipe for changing the direction of a pipeline, in particular a concrete or reinforced concrete pipeline, the pipeline consisting of straight pipe units each having a socket end and a spigot end. The individual pipe units are assembled with elastic seals and have an inner pipe diameter of 2 r.

As can be seen from the "FBS Quality Guidelines", Part 4 of the Association of Concrete Pipes and Reinforced Concrete Pipes eV, bends with a nominal width of around 1200 mm, also called "elbows", are used to change the direction of such pipelines in sewer construction. These are usually manufactured as special parts by the pipe manufacturers according to the site requirements.

When making an arc, one is straight Pipe unit out and angled as follows.

• - After the straight pipe unit has been manufactured, this becomes a wedge-shaped cut-out before the concrete hardens of the concrete removed from the reinforcement,
• - after the concrete has hardened, the reinforcement is  wedge-shaped cutout, the two Pipe halves relative to each other in the desired Brought angulation and the reinforcement with additional Reinforcement bars reconnected and
• - The remaining joint between the two to be re-concreted The pipe halves are manually inserted on the inside and outside and concreted.

These three steps are very time consuming and require a lot of manual work. Further there are two when concreting the remaining joint Material limits, there is always the risk of a leak entail.

The invention is therefore based on the object To create angled tube, in which the above Disadvantages are not present.

This object is achieved according to the invention in that the generic angle tube also after the license plate is designed by claim 1.

Refinements and Developments of the invention claimed.

Exemplary embodiments of the invention are shown in the drawings played. Show it:

Fig. 1 is a pipeline with a first angular pipe between two straight tube units,

Fig. 2 is a pipe such as FIG. 1 with a second angular pipe,

Fig. 3 is a section through the first angled tube according to the line III-III of Fig. 1, 4 and 5,

Fig. 4 is a section along the line IV-IV of Fig. 2 and

Fig. 5 shows a section according to the line VV of Fig. 3

In Figs. 1 and 2, two pipes are illustrated, the angle of the tubes 1, 2 as well as the straight tube units 31, 32; 33 , 34 exist. During is bent γ in Fig. 1, the piping 31, 1, 32 at an angle, is the pipeline 33, 2, 34 by an amount d added and runs, d offset only by the amount, in its straight direction on. Accordingly, the two end faces 11 , 12 are angled in opposite directions in the angled tube 1 , while in the angled tube 2 the two end faces 21 , 22 are angled in the same direction.

The following explanations with regard to the angle tube 1 also apply accordingly to the angle tube 2 .

In Fig. 3 is a section through the angle tube 1 along the lines III-III of FIGS. 1, 4 and 5 is shown. If the two tilt angles α, β ( FIG. 5) of the end faces 11 , 12 are only small - less than about 5 degrees - the outer cross section A and the inner cross section I can each be circular and the angle tube l can therefore be cylindrical on the inside and outside. However, if the tilt angles are larger, then it makes sense to give the angle tube 1 an elliptical cross section inside and outside. In this case, the tube has the large elliptical axes ( 2 a) A outside and ( 2 b) I inside.

If the angle tube 1 for a pipe line 31, is determined r having an inner diameter of 2 32, the large elliptical axis (2 a) has I of the ellipse with the inner tube diameter 2 r match, while the small inner half axis (2 b) I to the equation b = r cos α is to be calculated. This elliptical configuration of the angled tube 1 has the advantage that the end face 11 is circular and thus a sleeve end 13 can be molded into this end face or a tip end 14 can be formed, because both the sleeve end 13 and the tip end 14 are circular in cross section and agree with the corresponding opposite ends of the straight tube units 31 , 32 ; 33 , 34 match.

LIST OF REFERENCE NUMBERS

1

elbow

11

face

12

face

13

socket end

14

spigot

2

elbow

21

face

22

face

31

pipe unit

32

pipe unit

33

pipe unit

34

pipe unit
a large elliptical semi-axis
b small elliptical semi-axis
A outer cross section
I inner cross section
d amount of transfer
α tilt angle
β tilt angle
γ articulation angle

Claims (3)

1.Angled pipe for changing the direction of a pipeline, in particular a concrete or reinforced concrete pipeline, the pipeline consisting of straight pipe units with one socket end and one spigot end, the individual pipe units are joined with elastic seals and the straight pipe units have an inner diameter ( 2 r) characterized in that the angled pipe ( 1 ) has at least one end face ( 11 ) tilted at an angle α with respect to the pipe axis, in which a sleeve end ( 13 ) or a pointed end ( 14 ) for connecting a straight pipe unit ( 31 , 32 ) is molded in or molded on, and the sleeve or tip end ( 13 , 14 ) of the angled tube ( 1 ) corresponds to the corresponding ends of the straight tube units ( 31 , 32 ). 2. Angled tube according to claim 1, characterized in that the angled tube ( 1 ) has a circular inner cross section. 3. Angled tube according to claim 1, characterized in that the angled tube ( 1 ) has an elliptical inner cross section, the large axis ( 2 a) of the ellipse corresponding to the tube diameter ( 2 r) and the small semi-axis (b) according to the equation b = r cos α is to be calculated.