EP2530205B1 - Method for laying a pipe at right angles and impact device for same - Google Patents

Description

FIELD OF THE INVENTION

The present invention relates to a method for vertically laying a pipe, preferably a steel pipe in a subsoil, preferably earthy ground, wherein the tube is first positioned vertically aligned over a laying location and by means of a preferably hydraulically driven firing pin of a percussion repeating force pulses to one from the ground remote end face of the tube are discharged to ram this in the ground, according to the preamble of claim 1, and a corresponding impact device and a corresponding impact plate.

STATE OF THE ART

Vertical pipes routed underground often serve as the basis for foundations above ground. A large field of application relates to soundproof walls, which usually consist of plate-shaped soundproofing elements which are arranged between vertically projecting from the ground carriers and fixed thereto. To ensure a secure anchoring of the carrier, they are introduced into previously laid vertically in the ground pipes. Then the pipes are poured out with concrete.

So far, the laying of the pipes in the ground by means of vibrating technique. It vibrating devices are used, the unbalance mounted flywheel elements, which are moved under considerable energy expenditure, drive the pipes vertically into the ground. The problem here is the one hand, the positioning of the tubes, which can often be done only very inaccurate.

The far greater problem with this known method, however, is the compression of the substrate taking place in the course of the shaking process, which additionally adds to the laying process difficult and must be increased with progressive duration of the installation process required for laying force.

There are already known methods, see about this DE 29 00 221 A1 or the DE 197 34 966 A1 , in which the compaction of the substrate during the laying process is largely avoided and the required energy consumption is less than in conventional methods. The DE 29 00 221 A1 shows a pressure-driven ram device having a housing in which a striking body is slidably guided and which is supported on a shock transmission device 11, which in turn rests on a ram part 10, a vertically arranged tube.

It is an object of the present invention to provide a method for vertically laying a pipe, preferably a steel pipe, in a substrate, with which a cost-effective modular construction of the impact device and attachment to various construction machines is possible.

PRESENTATION OF THE INVENTION

According to the invention, this object is achieved in the method according to claim 1, after which a tube is first positioned vertically aligned above a laying location and repetitive force pulses are delivered to a remote from the ground end of the tube by means of a preferably hydraulically driven firing pin a percussion device to this in the underground rammed, solved by the fact that its vertical positioning over the installation site is done by hanging the tube to the impact device. As a result, the laying of the pipe can be made particularly simple, the unwanted compression of the substrate is avoided anyway by the method according to claim 1. In addition, the mechanical structure of the impact device is inexpensive, low maintenance and robust. A time-efficient relocation process is also possible by the method.

The impact device comprises in a preferred embodiment, arranged in a housing, preferably hydraulically operating drive device which drives a linearly movably mounted in the housing firing pin, and attached to the housing, preferably suspended impact plate and the firing pin is of a striking plate not contacting position in a beat-contacting position outside the housing movable and vice versa. As a result, a compact modular design variant of the impact device is given, which is suitable for rapid installation on a construction machine such as an excavator or a similar commercial vehicle.

In order to transmit the repetitive force impulses of the firing pin to the tube, it is further provided that the impact plate, at least in the firing pin contacting position contacted the remote from the ground end face of the tube.

The impact plate of the impact device has a substantially cylindrical base body, with a first end face facing away from the firing pin and a second end face facing a contact surface of the firing pin, wherein a recess, preferably adapted in shape and dimensions to the contact surface, is provided on the second end face , The recess allows a uniform force distribution within the striking plate.

In order to fix the position of the impact plate in contact with the tube, it can be provided that this has a substantially cylindrical base body, with a first end face on which a cylindrical, arranged concentrically to the cylindrical base body paragraph is formed with a smaller diameter than the main body , In this case, the paragraph protrudes into the tube interior, thereby preventing lateral slipping of the impact plate.

In order that the striking plate is suitable for attachment to pipes with different inner diameters, it is also provided in a particularly preferred embodiment variant, which the striking plate is a substantially cylindrical Base body has, with a first end face on which a plurality of cylindrical, arranged concentrically to the cylindrical base body heels each having a smaller diameter than the main body are formed, wherein the plurality of paragraphs have different diameters to each other and the diameter of the plurality of paragraphs with increasing distance thereof from the base body smaller become.

In order to prevent tilting of the impact plate with the front side of the tube remote from the substrate and to facilitate a centered attachment of the impact plate on the tube, the lateral surface of the paragraph or the respective lateral surfaces of the several paragraphs includes an obtuse angle with the first end face of the body ,

For the purpose of a uniform distribution as possible of the forces occurring at the end face facing the firing pin, the striking plate has a recess on a second end face opposite the first end face, which recess is provided for receiving a contact surface of a firing pin.

Since the impact plate has a high weight, this has for ease of handling through openings that allow the suspension of the striking plate by means of rope or other holding elements. The openings are preferably designed as a bore. The anchoring within that can for example be achieved by the rope or holding elements are each attached to a transverse to the axis of the bore bolts. Alternatively, the attachment can also be realized by means of through openings whose diameter widens in the direction of the first end face and is therefore suitable for receiving a correspondingly shaped region of the cable or retaining element, for example a wedge-shaped body, and thus for moving in the direction of the second Front side is hindered.

In a particularly preferred embodiment variant, the impact device is attached to a construction machine, for example an excavator or a similar utility vehicle. Here, the construction machine with a chassis and a boom arranged thereon equipped, wherein the chassis facing away from the end region of the boom is formed by the impact device with a striking plate.

BRIEF DESCRIPTION OF THE FIGURES

Fig.1

eine Seitenansicht auf eine Baumaschine, samt Schlagvorrichtung, Schlagplatte und Rohr,

Fig. 2

eine Draufsicht auf die Schlagplatte,

Fig. 3

eine Untersicht auf die Schlagplatte,

Fig. 4

eine Seitenansicht der Schlagplatte.

The invention will now be explained in more detail with reference to an embodiment. Showing:

Fig.1

a side view of a construction machine, including impact device, impact plate and pipe,

Fig. 2

a top view of the striking plate,

Fig. 3

a bottom view of the striking plate,

Fig. 4

a side view of the striking plate.

WAYS FOR CARRYING OUT THE INVENTION

Fig. 1 shows a side view of a construction machine 18, including impact device 4, impact plate 9 and tube 1. In this case, a construction machine 18, such as an excavator or a similar utility vehicle recognizable, on the chassis 19, a boom 20 is mounted, the end portion 21 by an impact device according to the invention 4 is formed or at its end portion 21 an impact device 4 according to the invention is mounted by means of conventional quick-change devices.

The impact device 4 itself comprises a housing 6, a drive device 7 arranged in the latter, and a striking plate 9 which is fastened to the housing and preferably suspended.

The preferably hydraulically driven drive device 7 drives a firing pin 8, which strikes upon exercise of the method according to the invention to a recess 15 in the striking plate 9, which in turn contacts the tube 1. The striking plate 9 is here by means of rope or retaining elements 17 on Housing 6 suspended, the impact plate 9 has openings 16, in which the cable or holding elements 17 are anchored.

The impact plate 9 itself consists of a cylindrical base body 10, which has two paragraphs 12,13 in the embodiment shown on a first, facing away from the firing pin end face 11. The lateral surfaces 23 (see Fig. 4 ) of the paragraphs 12,13 in each case close an obtuse angle α (see Fig. 4 ) with the first end face 11 of the base body. A second, the firing pin facing end face 14 of the striking plate 9 has the recess 15 which is suitable for receiving force pulses of the firing pin 8 via the contact surface 24. The striking plate 9 is in working position above the tube 1, which is fastened by means of a flexible connecting element 22 to the housing 6. The connecting element 22 may for example be designed as a tether.

In Fig. 2 is the floor plan of the striking plate 9 according to Fig. 1 recognizable, which grants a view of the second end face 14 of the striking plate 9. In the center of which is the recess 15. In addition, the arranged in the edge region openings 16 can be seen.

Fig. 3 shows the second end face 14 opposite first end face 11 of the striking plate 9. In the center are the paragraphs 12,13. Alternatively, the striking plate 9 but also have three, four or five paragraphs. In addition, the cylindrical base body 10 and the lateral surfaces 23 (see Fig. 4 ) can be seen.

A side view of the striking plate 9 is in Fig. 4 seen. The paragraphs 12,13 can be seen, the respective lateral surfaces 23 each include an obtuse angle α with the first end face 11 of the body.

FUNCTIONING OF THE INVENTION

The operation of the invention will be explained by way of example.

To move a pipe 1 vertically into the ground 2, it is inventively provided to first position the pipe 1 above the installation site 3 and by means of the firing pin 8 repetitive force pulses to the striking plate 9 and thus to the remote from the ground 2 front side of the tube 5 to ram this into the ground 2. In this case, the tube 1 is fastened by means of a connecting element 22 to the housing 6, which in turn is connected to a construction machine 18. The positioning of the tube 1 is effected by a corresponding positioning of the housing 6, the position of which is again predetermined by the construction machine 18. The vertical orientation of the tube 1 takes place by gravity.

On the one hand, the construction machine 18 can be moved autonomously in the environment, or it can also be arranged on a wagon in order, for example, to erect a foundation of noise protection walls which are to be mounted parallel to traffic rails. The construction machine 18 has a chassis 19 and a boom 20 arranged thereon, the opposite end region 21 of which is formed by the impact device 4.

If the pipe 1 is located at the laying site 3, then the striking plate 9 is brought to the front 5 of the pipe 1 remote from the base 2 so that at least one of the shoulders 12, 13 projects into the interior of the pipe 1. It is preferred but not necessarily provided that the end face 11 of the striking plate 9 also contacted the end face 5 of the tube 1. Since the striking plate 9 is suspended from the housing 6, it requires the correct introduction or placement of the striking plate 9 on the tube 1 only a small aligning force that can apply, for example, a construction worker. The firing pin 8 is in a non-contacting position and is now accelerated to meet in a contacting position on the recess 15 of the striking plate 9 and thus to transmit a force pulse over a large area on this and thus the tube 1. In the event that the striking plate 9 is initially brought only to the remote from the base 2 front side 5 of the tube 1, so that at least one of the paragraphs 12,13 protrudes into the interior of the tube 1, also takes place in the course of impact of the firing pin 8 on the striking plate 9 and the contact between the impact plate 9 and end face 5 of the tube first

Subsequently, the firing pin 8 is moved out of the recess 15 again in a non-contacting position, which allows a re-acceleration of the firing pin 8 in the contacting position. By repeating this process, the tube 1 is successively driven into the ground 2 until the desired end position is reached. In this case, the connecting elements 22 can already be released as soon as the tube 1 is in a stable position, which is generally already given before reaching the end position.

LIST OF REFERENCE NUMBERS

1

pipe

2

underground

3

the laying

4

impact device

5

Front side of the pipe

6

casing

7

driving device

8th

firing pin

9

impact plate

10

cylindrical body

11

first end face of the main body

12

paragraph

13

paragraph

14

second end face of the main body

15

deepening

16

openings

17

Rope or holding element

18

Construction machinery

19

chassis

20

boom

21

end

22

connecting element

23

Lateral surfaces of the heel (s)

24

Contact surface of the firing pin

Claims (7)

1. A method for the perpendicular laying of a pipe (1), preferably a steel pipe, in a ground (2), preferably earthy ground (2), wherein the pipe (1) is positioned at first in a perpendicularly aligned manner above a laying location (3) and repetitive force pulses are delivered to a face end (5) of the pipe which is remote from the ground (2) by means of a preferably hydraulically driven striker (8) of a striking apparatus (4) in order to ram said pipe into the ground (2), characterized in that the perpendicular positioning of the pipe (1) above the laying location (3) occurs by suspending the pipe (1) on the striking apparatus (4).
2. A striking apparatus (4) for performing the method according to claim 1, which comprises a drive apparatus (7) which is arranged in a housing (6), is preferably hydraulically operated and drives a striker (8) that is mounted in a linearly movable manner in the housing (6), and comprises a striking plate (9) which is fixed to the housing (6) and is preferably suspended, and the striker (8) can be moved from a position not making contact with the striking plate (9) to a position making contact with the striking plate (9) outside of the housing (6) and vice versa, characterized in that the striking plate (9) has a substantially cylindrical base body (10), comprising a first face end (11) facing away from the striker (8) and a second face end (14) facing a contact surface (24) of the striker (8), and a depression (15) is provided on the second face end (14), which depression is preferably adjusted with respect to its shape and dimensions to the contact surface (24).
3. A striking plate (9) of a striking apparatus (4) according to claim 2, wherein the striking plate (9) comprises a substantially cylindrical base body (10), having a first face end (11) on which a cylindrical protrusion (12) is provided, which protrusion is arranged concentrically to the cylindrical base body (10) and has a smaller diameter than the base body (10), characterized in that the striking plate (9) has a depression (15) on a second face end (14) opposite of the first face end (11), which depression is provided for accommodating a contact surface (24) of the striker (8).
4. A striking plate (9) of a striking apparatus (4) according to claim 3, characterized in that it comprises a substantially cylindrical base body (10), having a first face end (11) on which several cylindrical shoulders (12, 13) are provided, which shoulders are arranged concentrically to the cylindrical base body (10) and respectively have a smaller diameter than the base body (10), wherein the several shoulders (12, 13) have different diameters with respect to each other and the diameters of the several shoulders (12, 13) decrease with increasing distance thereof from the base body (10).
5. A striking plate (9) according to claim 3 or 4, characterized in that the jacket surface (23) of the one shoulder (12) or the respective jacket surfaces (23) of the several shoulders (12, 13) respectively enclose an obtuse angle (α) with the first face end (11) of the base body.
6. A striking plate (9) according to one of the claims 2 to 5, characterized in that the striking plate (9) comprises openings (16) which enable the suspension of the striking plate (9) by means of cable elements or other holding elements (17).
7. A construction machine (18) with a chassis (19) and a jib (20) arranged thereon, characterized in that the end region (21) of the jib (20) facing away from the chassis (19) is formed by a striking apparatus (4) according to claim 2 with a striking plate (9) according to one of the claims 3 to 6.

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