DE7426167U - EQUIPMENT FOR LAYING A PIPE STRING IN A DITCH MADE IN THE OPEN SHEETING, IN PARTICULAR IN WATER-BASED SOILS - Google Patents

Description

Union Eisenhütte Westfalia, 4670 LUnen

Titles facility for laying a pipe stretch in an im trenches made in open shoring, especially in water-bearing BSden

The invention relates to a device for laying a pipe string in a trench made in open shoring, especially in water-bearing soil, with a ditch securing knife shield.

When laying pipelines in open shoring «uB first a trench can be dug into which the pipe sections are then placed and assembled into a pipeline “It is usually necessary to secure the trench wall with the help of reu planks, sheet piling and the like. In particular, when laying large-diameter pipelines in water-bearing soil, this often results the need to lower the groundwater, which is associated with considerable effort «.

It is known to use a pipe laying box for carrying out pipe laying work, which is equipped with a

Westfalia Ironworks Union
GW 2488

is provided with a rear pipe passage opening for the exit of the pipe string (DT-OS 2 058 336, DT-OS 2 058 337, DT-AS 1 634 888, US-PS 3 354 661 _{) A Z 9} B assembly device consisting of setting cylinders can be arranged in the pipe-laying box, with which the recessed pipe sections can be attached to the pipe string that has already been laid and which can also be used to prepress the pipe-laying box in the trench special jacking devices, for example excavating devices that can be driven on caterpillars, are used which are possibly coupled to the pipe-laying box so that they can haul it up.

Finally, it is also known when driving tunnels, tunnels, trenches or the like. to use Messersjhilde in the ground, the knife piles supported by individually or in groups, which can be pre-prepped on a support frame that can be tracked are provided.

The object of the invention is to provide a device for laying pipelines, such as above all sewage and supply lines, to create in open shoring, which is particularly useful for laying pipes in difficult areas or water-bearing booths and with their use one can manage without costly groundwater lowering can.

The device according to the invention is characterized in that the knife shield has a pipe laying box coupled to it is nafeägeschaltet, which has a countersunk pipe opening in the upper area and, on its end face facing away from the knife blade, a pipe passage opening encompassing the end of the pipe string lying in it «

According to the invention, the knife shield is one with a

Westfalia Ironworks Union
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Upper tube recess provided opposite the ditch sealed pipe laying box tracked, in which the pipes to be attached to the already laid pipe run are sunk are, whereupon the pipe-laying box with the storage of the pipe or pipes located in it on the trench bottom in the direction of the knife shield is at least so far advanced that then another pipe into the Pipe laying box can be lowered. The pipe-laying box can be made watertight without difficulty, so that pipes can be laid without lowering the groundwater even in soils that are heavily water-bearing. at In water-bearing soils, it is advisable to place the pipe-laying box at its pipe opening opposite the pipe string to seal. The arrangement can be made so that the pipe-laying box when catching up on the in him lying end of the pipe string is sealingly performed. The pipe-laying box also facilitates the introduction the individual pipe sections and the attachment of the same to the pipe that has already been laid. He lets himself in a simple way to advance or advance in the trench. For this purpose, the pre-press cylinder of the knife shield, if necessary. with the participation of Setz- and Feed cylinders are used, which oppose the Support the free end of the pipe section that was introduced last and which one to set down the one sunk into the pipe-laying box Pipe sections to the pipe that has already been laid serve.

In the device according to the invention, alaio is the pipe-laying box downstream of a knife shield, which can be pre-pressed individually or in groups by means of a press cylinder, which is supported on a support frame Knife boards is provided. Here is the pipe laying box preferably with the one in the direction of advance Recoverable support frame coupled to the knife blade. With this arrangement, the trench is secured

Westfalia Ironworks Union
GW 2488

in the immediate driving area thus through the knife blade, while the downstream pipe-laying box takes over the protection of the trenches in the pipe-laying goblet. Since the pipe laying box is coupled to the support frame of the Hessersohildes, the support frame and the pipe-laying box forms a solid, immovable abutment for the press cylinders pushing the jacking knives. At the same time, the coupling of the pipe-laying box with the support frame of the knife shield has the advantage of that the support frame and the pipe-laying box can also be rescheduled together · This can, as mentioned, with With the help of the hydraulic press cylinders assigned to the knife screeds, if necessary. supported by additional press cylinders, which are supported on the pipe that has already been laid. The coupling of the pipe laying box with the support frame of the knife shield also leads to a stabilization of the position the support frame as well as improvements in catching up these devices in the direction of advance of the trench. With the invention, therefore, a total jacking and pipe laying device is made, which is characterized by high Excellent performance even under difficult working conditions, such as those found in water-bearing soils.

The inventive design of the jacking and pipe laying device makes it possible in a particularly advantageous manner to equip the knife boards of the knife shield with rear extensions, so-called trailing knives, which form a shield tail on which the pipe laying box is slidably guided. This is achieved above all that even the grave area between the leading blade shield and the trailing pipe ■ from the trailing knives publishing box at all times is ensured and that the post-ϊ pick of the pipe laying box is facilitated because this f this on or the on the of Sohildachwanz formed \ slide slides. When the pipe installation box is picked up ^{> l}

Union Elsenhütte Vestfalia
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The resulting gap between the turn of the trench and the circumference of the pipe can be treated with a VerpreBmasae, especially a thixotropic Grouting liquid, to be filled in to avoid undesirable lowering of the pipe sections last introduced To prevent advancement of the pipe laying box.

Especially when using the pipe installation box in water-bearing A pipe socket that encompasses its pipe passage opening is expediently arranged on the box, with which the pipe laying box can lead to the pipe string that has already been laid. At the ina catch of the pipe passage opening b? no. of the pipe socket is preferably an elastic seal lying against the pipe circumferential surface or the like. arranged.

On the end wall of the pipe-laying box facing the Mes ^ slld the setting and feed cylinders can be arranged, which are against the last introduced pipe section are supportable. The setting and feed cylinders are advantageously arranged so that they are against the front wall can be swiveled in and swiveled out against the pipe string Cylinder-receiving bulge or the like. Be provided. In the swiveled-in rest position accordingly lie the cylinder flat on the end wall or in its bulge, so that they sink the Pipe sections not obstructed.

To move the pipe-laying box around the circumference to close between the end pipe sections and the trench wall forming gap and thus a, albeit slight, Lowering the last pipe brought in «To prevent shots, the pipe laying box can, as mentioned, be provided with a grouting line with exit openings located in the area of the pipe passage opening is provided for the grout. Preferably

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is the injection line according to the cross section the pipe installation box is approximately U-shaped and so arranged that it engages around the box. The towering line legs of the U-shaped injection line protrude like a chimney out of the open trench, so that from above into the appropriately funnel-shaped line ends the pressing agent can be introduced.

The pipe laying box preferably has an approximately trough-shaped cross-sectional shape. He advantageously points to his troughed floor on which the from Pipe sections sunk above are stored, have a clear inner diameter that is approximately equal to the pipe outer diameter chinese water. In this way, the in The pipe sections sunk into the box without any noteworthy alignment work at the end of the pipe that had already been laid connect. It is advisable to design the pipe installation box in such a way that its two opposite ones Sidewalls diverge upward such that its width increases towards the upper tube recess opening.

The invention is described below in connection with the The exemplary embodiment shown in the drawing is explained in more detail. The drawing shows:

1 shows a pipe laying device according to the invention in longitudinal section;

FIG. 2 shows the device according to FIG. 1 in an end view or in cross section,

The from individual pipe sections 10, in particular concrete pipes, The composite pipe string is laid in an open trench immediately after the The last pipe section (shown on the left in Fig. 1)

Westfalia Ironworks Union Gw 2488

represents) can be closed by filling up the excavated Brdreiohes, as indicated at 11. The pipes are laid in an open sheeting, with a knife base 12, known in its basic structure, being provided for driving and / or securing the trench in the driving area, the knife piles 13 of which can be pre-pressed individually or in groups in the driving direction V by means of hydraulic presses assigned to them. The double-acting presses 14 are articulated between the ₍ Mesa screeds 13 and a support frame 15 on which the knife screeds are supported and guide Knife screeds resting against the ground with friction sole and thus the support frame 15 connected to it form the abutment for the presses of the knife screed or knife screed group to be advanced.

On the blade plate 12, the rear side, a coupled with it, existing of a BlechkSrper pipe laying box 16 which, as particularly Fig sohlieBt at. 2 shows, approximately a U-shaped cross-section with upwardly diverging side walls 16 ^r has. The tub-length pipe laying box 16 has a troughed bottom 17 with a diameter which corresponds approximately to the outer diameter of the pipe section 10. The clear width of the pipe laying box 16 in the upper area is slightly larger than the outer diameter of the pipe section 10 due to the inclined side walls 16 *. The pipe laying box 16 protrudes from the top of the trench; it has a recessed pipe opening 18 through which the pipe sections 10 to be attached to the pipe string that has already been laid are introduced into the box. On its end face 19 facing away from knife shield 12, pipe laying box 16 is provided with a circular pipe passage opening

Westfalia Ironworks Union Gw 2488

▼ see »whose diameter is slightly larger than the outer tube diameter. On the pipe laying box 16 a pipe socket 21 is attached here, which thus engages around the pipe string with little radial play. In order to seal the annular gap, elastic sealing means 22 are arranged on the connecting piece 21, which are diohtend place against the pipe circumferential surface.

On the opposite end wall 23 there is a pipe installation box 16 a protruding to the Hessersohild 12 Front wall bulge 24 on whose wall surface in the lower area hydraulic setting cylinders 25 in the articulated connections 26 are hinged. The setting cylinders 25 are accordingly from a rest position 25 'in which they are protected Are in the front wall bulge 24, in the fully shown in Fig. Swiveling working position, in the it sioh with its piston rods 27 over a pressure piece on the end face of the last inserted one in the pipe laying box 16 support pipe section 10 at rest. The articulation connections 26 are expediently designed as easily detachable joint couplings, so that depending on the location of the Pipe section 10 can be used within the pipe laying box 16 cylinders 25 of different lengths be able. In Fig. 1 such cylinders are indicated with a greater length at 25 "in the rest position.

The pipe laying box 16 is via an articulated connection 29 coupled to the support frame 15. The knife boards 13 of the knife shield 12 each have a flat one or slightly curved trailing knife 30, which grips the pipe laying box 16 or between this uad the ditch wall lies. The trailing knives 30 are via an articulated connection 31 with the front Knife boards 13 connected. As Fig. 2 shows, the Trailing knife 30 designed so that it provides a substantially gap-free lining of the trench cross-section

Westfalla Ironworks Union
GW 2488

bilcen. The trailing knives 30 can be attached to each other facing longitudinal edges be guided together. It can be seen that the pipe-laying box 16 is attached to the trailing knives 30 and leads during the advance.

In operation, the knife screeds 13 are "as described above" with the help of the presses 14 individually or in groups propelled into the ground in the direction of advance Y »whereby they calibrate via the support frame 15 to the Support knife piles 13 that are friction-locked against the trench wall. As soon as all knife boards 13 are advanced by the stroke of their presses 14 »can Support frame 15 together with the pipe laying box 16 to be rescheduled. The pipe laying box 16 seals the trench immediately behind the knife shield 12. over the pipe countersunk opening 18, the pipe sections 10 are individually introduced into the pipe laying box 16. The respective sunk pipe section 10 is due to the cross-sectional shape of the pipe laying box 16 compared to that in the ground Aligned pipe string that has already been laid. Then the setting cylinders 25 are in the working position Fig. 1 swiveled out, in which their piston rods 27 against the face of the lying in the pipe-laying box 16 Support pipe section 10. By applying pressure to the setting cylinder 25 in the extension direction, this is then Pipe section 10 with its opposite end face against the last pipe section of the laid pipe string printed »whereby the connection is established. Then the pipe laying box 16 together with the Support frame 15 moved in advance direction V. This can be done with the aid of the presses 14, which in this case are shown in Insertion direction are acted upon and are supported in this case on the advanced knife piles 13 »which frictionally rest on the ground. The advance of the pipe laying box 16 mad dei & support frame 15 can

Westfalia Ironworks Union
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also with the help of the setting cylinder 25 or with support this cylinder take place. When the pipe-laying box is advanced 16 see this pushes away over the last pipe section 10, where he is with his pipe socket 21 or the sealing means 22 arranged here on the outer circumference of this pipe socket «can lead to Further advance in the pipe laying box 16 provides sufficient space again, a new pipe section 10 sunk into the pipe-laying box from above and attached to the pipe string in the manner described.

It can be seen that during the advance of the knife screeds 13 whose trailing knives 30 are taken along with them In the area between the outer circumference of the Rohrachtiese 10 and the trench wall, an annular gap 36 is set, which a lowering of the emerging from the Rohrdurchgangsöffniuig 20 last pipe shot 10 would result. To prevent this, the annular gap 36 is filled with a grouting agent, e.g. a thxotropic grouting liquid, pressed. For this purpose, the pipe-laying box 16 has a compression line 32 which, as above all FIG shows, is approximately U-shaped and is located in the region of the pipe socket 21 around the pipe laying box 16 extends, with its two towering line legs 33 protrude from the top of the trench and here one Have funnel opening 34. About these funnel openings 34 the pressing agent can be introduced. The distribution line 32 has on the circumference of the pipe socket 21 pressing openings 35 through which the pressing means into the annular gap 36 exits. The outlet pressure is determined by the height of the chimney-like line parts 33 determined.

The excavated soil in the area of the knife blade 12 can in different ways, e.g. by means of a (not shown) arranged in the blade itself

Westfalia Ironworks Union
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Dismantling device or a device standing above the trench. The pipe laying box 16 is closed on its end face facing the knife shield 12. It has a lockable one here Man opening or lock or the like. on. The device described can also be used when the pipe string is assembled from individual segments in the manner of a segmental lining.

Claims (14)

Protection claims 1. Establishment of laying a pipe tube in a » - The reasons produced in the open shoring »in particular in water-bearing BSden ^ with a »securing the ditch Knife shield, characterized in that the knife shield (12) has a pipe laying box (16) coupled to it is, the generally upper area is a tube opening (18) and on the front side facing away from the knife handle a pipe passage opening (20) encompassing the booth of the pipe string located in it. 2. Device naoh claim 1, characterized in that that the knife holder (12) with trimmed on a support frame (1?), individually or in groups by means of prefilling cylinders (14) Torpredbaren Knife screeds (13) and that the Westfalia Ironworks Union GW 2488 - II - Pipe laying box (16) coupled to the support frame (15) is. 3. Device according to claim 1 or 2, characterized in that the pipe laying box (16) has an approximately trough-shaped cross section having. 4, device according to claim 3 »characterized in that the vranneni-shaped pipe laying box (16) has a clear inner diameter in the bulged floor area ₉ which is approximately equal to the outer pipe diameter, with its cross winds (16 *) diverging upwards. 5 «device according to one of claims 1 to 4, characterized in that the Pipe laying box (16) a pipe opening (20) encompassing pipe socket (21), 6 «device according to one of claims 1 to 5» thereby characterized that at Itafang the pipe passage opening (20) or »m dem Pipe socket (21) is arranged a seal (22) lying against the pipe circumferential surface. 7 * device according to one of claims 1 to 6, characterized in that an the end wall (23) of the pipe laying box (16) facing the knife shield (12) against the last one introduced Pipe section (10) supportable setting and pre-acimb cylinders (25) are arranged. 8. Device according to claim 7 »characterized in that the setting and pre · * «I« It «■ · * · ti •. »· III« * · t Veetfalia Ironworks Union GW 2488 - Ill - scraping cylinder (25) can be swiveled in against the end wall (23) and are arranged such that they can be swiveled out against the pipe string. 9 · Device according to claim 7 or 8, characterized in that the setting and The pre-lifting cylinder (25) is arranged on the end wall (23) of the pipe-laying box (16) so that it can be easily replaced are. 10. Device according to one of claims 7 to 9 »characterized in that the The end wall (23) of the pipe loading box (16) accommodates the swiveled-in setting and feed cylinders (25) Front wall bulge (24) or the like "has" 11. Device according to one of A & sprUohe 1 to 10, characterized in that the Pipe laying box (16) on one with the Hessersehild (12) connected shield tail (30) rests. 12. Device according to one of claims 1 to 11, characterized in that the Pipe laying box (16) coupled with the pressing cylinders (14) of the knife blade 1st 13 · Device according to claim 12, characterized that the press cylinder (14) are supported on the support frame (15) with which the Pipe laying box (16) is coupled. 14. Device according to one of claims 1 to 13 »characterized in that the Knife boards (13) of the knife shield (12) with the pipe laying box (16) reaching under, the shield - IV - So-tail-forming Naohlaufitessern (30) provided are· Provided 15 "means to a" of the address 1 to 14, da · characterized by that the Rohrrerlegekasten (16) is old seen a VtrpreBleitung (32) ▼, the Austrittsuffnungen lying with the Bereioh the tube passage-opening (20) for the VerpreBaittel is" 16 · Device according to claim 15, characterized in that the VerpreBleitung (32) is approximately U-shaped, with its protruding cable arm (33) from the kaain-like Ditch sticking out.