DE102012005628A1 - Device for connecting two or more hoses or pipes used in vacuum truck, has lever which produces closing force acting on periphery of hose, and display presents correct intended mating of hose inside diameter and clutch outside diameter - Google Patents

Abstract

The device has a lever (8) which produces the closing force acting on the periphery of the hose (6), by shortening the circumference of the clamping devices (31,32), defined by the measuring element (12). A display (20) is provided for presenting the correct intended mating of hose inside diameter and clutch outside diameter. The clamping force is produced by the coil spring, plate spring packets or integrated spring element. A coupling unit has a guide (5) for receiving securing hook and carbines.

Description

When vacuum suction wagons are used, spiral hoses with rubber sheaths with diameters between 60 mm and 200 mm are generally used. Due to these relatively large diameters and the nature of these hoses, it is not possible to roll up these on reels without damaging the material. Therefore, you are usually divided into working lengths of about 5 m. In order to overcome larger distances between the vehicle and the application site, several hoses have to be coupled. Although the systems on the market are all tight, they are also heavy and cumbersome. In all systems, the hoses must be mechanically connected to the coupling units in a workshop to ensure a constant closing force between pipe and coupling piece. In addition, all systems are very sensitive due to their mostly conical contact points. However, since the use always takes place in a very harsh environment, this is not an advantage. There are also systems that eliminate many of these disadvantages, but new problems emerge.

• A – Patentschrift 1190275
• B – Offenlegungsschrift 1911969
• C – Gebrauchsmusterschrift DE 20 2007 006 853 U1
• D – Offenlegungsschrift DE 10 2009 002 193 A1

The following applications affect the invention:

• A - Patent 1190275
• B - Patent Publication 1911969
• C - utility model DE 20 2007 006 853 U1
• D - Disclosure DE 10 2009 002 193 A1

In essence, the present invention is a further development of application (D). Applications (A) to (C) are references from application (D).

The application (D) has shown various disadvantages in practice. Manually closing by means of a person does not ensure that a sufficiently constant closing force has been set. This means that the closure could indeed have been closed by a person but does not know the sufficient tightness which would be required for safe operation.

This means that such a closure must have a possibility that when closing at the place of use (without machine) is always a sufficient locking force is available. This becomes possible by the present invention. The closure principle is essentially taken from the application (D). However, extended by one measuring element. This measuring element indicates to the worker whether the closure is sufficiently closed or not. By means of a display, the worker can see if the lock is closed or needs to be readjusted.

The new hose connection consists essentially of a tube which is slightly smaller in outer diameter than the hose inner diameter and two clamping devices.

The tube has in each case at the beginning of a bead in the diameter of the hose inner diameter. Then it rejuvenates a little. This rejuvenation is slightly wider than the clasp. Thereafter, the tube again on the diameter of the hose (inside). This means that when a tube is pushed over this bead and the taper and then back onto the bead, a small cavity is created in between. This is eliminated by operating the tensioning device. Now, on the one hand, a frictional connection is created by the tensioning device and, on the other hand, there is also a form fit due to the deformation of the tube, which adapts to the contour of the tube. Due to the spiral arrangement, the hose can undergo deformations of a certain order of magnitude. This allows a tight closure.

If a hose is now inserted from both sides onto this pipe, the clamping devices can be closed by means of a lever. Then the worker can check on the window whether the closing force has been reached or not. If the closing force has not been reached, the device must be opened again and the adjusting screw readjusted. This process must be repeated until the correct closing force can be recognized on the viewing window.

Now that the lever is closed, the cotter pin can be plugged. This is required in the harsh environment so that when using the shutter does not open unintentionally.

The slip ring knows a much larger diameter than the closed clamping device. This has the advantage that the entire hose connection can be pulled over the floor without damaging the closure.

If with such extended hoses certain height difference are overcome, can be used to support or to catch the dead weight of the hoses and connections, suitable eyelets on the hose connection to attach them to appropriate auxiliary equipment (scaffold / hook in the wall).

The big advantage of this device is that it can be installed quickly and disassembled quickly, taking into account the constant closing force. Thus, the clutch can be removed for transport of the hoses and not be damaged by carelessness. This often happens with existing systems. These are firmly connected to the hose, making them heavy and sensitive. If the closure together with the hose falls to the ground, it is often so badly damaged that it can not be repaired on site. If the hose falls down without closure, no damage occurs. And the clutch can be transported very easily alone.

Another advantage of the device is that a defective hose can be repaired on site. That is, if an unforeseen leak occurs on a hose, it may be disconnected at the defective location, another clutch unit may be used, and it is ensured that the closure is as closed as if it had been machined.

figure description

1 : A perspective view of an embodiment of the device according to the invention

2 : a top view of the in 1 illustrated embodiment without hose right with the measuring element variant B without cover plate.

3 : a top view of the in 1 illustrated embodiment without a hose left and without clamping device left with the measuring element variant A without cover sheet metal

This in 1 illustrated embodiment of the device according to the invention for connecting two or more hoses and or tubes comprises a coupling unit 30 and a clamping device on the right 31 and a clamping device on the left 32 , On the coupling unit 30 each will be a hose 6 reared.

The coupling unit 30 consists essentially of a tube 11 which is for holding the hoses 6 and to attach the guide 5 and the sliding ring 9 serves. The leadership 5 is with the pipe 11 firmly connected and as well as the pipe 11 preferably made of metal. The sliding ring 9 is also by means of suitable connections with the pipe 11 firmly connected and is preferably made of a material with low frictional resistance such. B. plastic.

The clamping devices 31 . 32 are by means of connecting screw 34 through the leadership 5 with the pipe 11 connected and thus can absorb certain forces.

The leadership 5 still has appropriate openings to attach more security elements such as carabiners or cables. These can be at a z. B. vertical application may be required. Or to secure the coupling unit 30 ,

The illustrated embodiment shows the device in the closed state. This condition is reached when a hose 6 on the pipe 11 is pushed to the stop. Then the lever becomes 8th moved towards the hose. This will shorten the scope of closure 7 , which is preferably made of a tensile, non-stretchable material achieved. As a result, the scope of closure 7 smaller than the outer diameter of the hose 6 , This is now deformed and against the pipe 11 pressed. Over a viewing window 20 Now the contact force can be read. This indicates whether the contact pressure has been reached or not. If it was not reached by means of the adjusting screw 3 be readjusted. This is preferably done in the relaxed state. If the required contact force has been reached, the cotter pin can be used 18 be introduced into its intended opening.

In 2 is that in 1 illustrated embodiment of the device according to the invention shown in plan view without tube right. The tensioning device 31 shows an open state 27 , It is also a closed state 28 the device 32 to see. This shows the measuring element variant B 16 in two variants without cover plate 13 , On the one hand with spiral spring 4 and on the other with disc spring package 1 ,

Will the lever 8th , as described above, closed, the bracket nut 17 in the direction of the adjusting screw 3 emotional. From a certain force springs the coil spring 4 or optionally also the cup spring package 1 one. By the movement of the stirrup nut 17 in the direction of the adjusting screw 3 , now also the colored area moves 21 opposite the viewing window 20 , Now that the desired force is achieved by the colored area 21 in the viewing window 20 displayed. Thus, the operator can always produce only the correct shutter force. Such consistency could otherwise only be generated by a machine and not on site by the operator.

In 3 is that in 1 and in 2 illustrated embodiment of the device according to the invention in a plan view without tube left and without clamping device left 32 shown. 3 also shows a section through the top view.

Will now be a hose 6 over the pipe 11 pushed so must first the diameter 23 be overcome. This corresponds almost to the inner diameter of the hose 6 , Then rejuvenated the diameter 24 a little to simplify the fitting of the hose. Just before the stop of the pipe 11 the diameter increases 25 back to the measure of diameter 23 ,

As in the right view in the section of 3 to see a cavity is created 26 between inner diameter hose and diameter 25 , This cavity is wider than the closure 7 , Will now the clamping device 31 / 32 the cavity is closed 26 eliminated. By a corresponding clamping force now creates a force and form fit which is sufficient to a tight connection between hose 6 and pipe 11 manufacture.

The closure device in the open state 27 is here without cover 13 shown and shows an integrated into the measuring element spring 12 ' , The operation of the force representation is analogous to the previously described embodiment. Only the spring force is generated by the S-shaped arrangement.

LIST OF REFERENCE NUMBERS

1

Belleville spring assembly

2

mother

3

adjustment

4

spiral spring

5

guide

6

laying hose

7

shutter

8th

lever

9

sliding ring

10

wave

11

pipe

12

Measuring element variant A

12 '

integrated spring of measuring element

13

Cover plate

14

Vierkantmutter

15

sheet

16

Measuring element variant B

17

Ironing mother

18

cotter

19

fuse

20

display

21

Colored surface

22

diameter

23

diameter

24

diameter

25

diameter

26

cavity

27

Locking device in open state

28

Locking device in closed condition

29

contraption

30

clutch unit

31

Clamping device right

32

Clamping device left

33

Inner diameter hose

34

connecting screw

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202007006853 U1 [0002]
• DE 102009002193 A1 [0002]

Claims (9)

Device for connecting two or more hoses or pipes, characterized in that the closing force acting on the circumference of the hose, which by a lever 8th by shortening the circumference of the tensioning device 31 . 32 generated by means of a measuring element 12 . 16 defined and an ad 20 is always shown for the intended pairing of hose inner diameter 33 and clutch outer diameter 23 . 24 . 25 right is. Device according to claim 1, characterized in that the tube has different diameters 23 . 24 . 25 for pushing on the hose 6 having. Device according to one of the preceding claims, characterized in that the clamping force by means of coil springs 4 is produced. Device according to one of the preceding claims, characterized in that the clamping force by means of cup spring packages 1 is produced. Device according to one of the preceding claims, characterized in that the clamping force by means of integrated spring element 12 ' is produced. Device according to one of the preceding claims, characterized in that the clamping device 31 . 32 a safety device 19 has. Device according to one of the preceding claims, characterized in that the coupling unit 30 a guide 5 for holding security carabiners and hooks. Device according to one of the preceding claims, characterized in that the coupling unit 30 a sliding ring 9 has. Device according to one of the preceding claims, characterized in that the clamping device 31 . 32 by means of adjusting screw 9 is adjustable.

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