DE9212417U1 - Device for continuous concreting of large structures - Google Patents

Description

The invention relates to a device for the continuous concreting of large structures, in which the fresh concrete is continuously pumped to the concreting location by means of a multi-jointed articulated distribution boom.

Particularly in the case of structures that are to be concreted in a vertical or horizontal direction, such as retaining walls of great heights or large-area floors or ceilings, economical concreting is not possible because it cannot be achieved with the available articulated placing booms.

Bremen:

Hollerallee 32, PO Box 10 71 27
D-2800 Bremen 1

Telephone (04 21) 34 90 71
Fax (04 21) 3 49 17 68
Telex 244 958 bopal d

Berlin:

Uhlandstrasse 173/174
D-1000 Berlin 15

Telephone (0 301 H 81 10 36 Fax (0 30) 8 Sl 39 27 Telex 183 661 fron d

Munich:

Franz-Joseph-Strasse 38 D-8000 Munich 40

Telephone (0 89) 34 70 80 Fax (C 89) 34 70 10 Telex i24 282 forbo d

Leipzig:

Petersstrasse D (O)-7010 Leipzig

Telephone (0037^1)29 45 Fax (0037-41)28 40

BOEHMERT & BOEHMERT, NORDEMANN and PARTNERS

Time-consuming and expensive discontinuous processes have to be used, in which, for example, containers with fresh concrete have to be lifted over the concreting site using a crane and emptied.

The invention is based on the object of designing a device of the type described in such a way that concreting even of buildings of great height is made possible continuously.

To solve this problem, a device of the type described provides that the articulated distribution boom is attached to the boom end of a crane and that a pipeline for the fresh concrete is installed on the crane, which extends to the boom end and is coupled to the articulated distribution boom at its boom-side end.

In a first embodiment of the invention, the crane is a truck-mounted crane with a telescopic boom, and the pipeline is installed along the extended telescopes of the telescopic boom.

Preferably, a first section of the pipeline is permanently installed on the base boom, and further sections of the pipeline, the total length of which in the assembled state is adapted to the telescopic length of the telescopic boom, can be carried on the vehicle and coupled to one another and to the first section of the pipeline using commercially available, fluid-tight clamp couplings.

When working with the mobile crane, after the telescopic boom has been extended, a pipe section corresponding to the telescopic boom length is laid firmly on the boom and connected to the first pipe on the base

BOEHMERT & BOEHMERT, NORÜEMANN and PARTNERS

boom-mounted section and fluid-tight coupling to the articulated placing boom.

The invention can also be implemented in conjunction with other types of crane, for example in conjunction with a lattice boom crane, as is often used on construction sites. In this case, the pipeline is permanently installed in the mast of the lattice boom crane.

In a preferred embodiment of this variant, the articulated placing boom is attached to the boom end of the boom that normally carries the counterweight, and to compensate for the load moment exerted by the articulated placing boom and the fresh concrete conveyed by it, balancing weights with a suitable, variable radius are attached to the trolley of the lattice boom crane that otherwise carries the load.

While the use of articulated distribution booms was previously limited to outreaches of 64 m vertically and 60 m horizontally, the invention enables outreaches far beyond this to be achieved, with one embodiment achieving outreaches of 82 m vertically and 78 m horizontally.

The invention is explained in more detail below using schematic drawings of embodiments. They show:

Fig. 1 in a schematic side view of a mobile crane with telescopic boom and attached articulated distribution boom in unfolded working position when concreting a retaining wall;

Fig. 2 shows a schematic side view of a lattice boom crane with a counterweight boom arm

BOEHMERT & BOEHMERT, NORDEMANN and PARTNERS

attached articulated placing boom shown in solid lines in folded position and dashed lines in working position when concreting a retaining wall.

In Fig. 1, the reference number 2 designates a heavy truck crane (200 t). The truck crane comprises a vehicle 4 with a turntable 6, on which a telescopic boom, designated overall by the reference number 8, can be pivoted about the azimuth axis ζ and about the elevation axis χ.

The telescopic boom has a base boom 10 and two extendable telescopes 12, 14. The usual hammer head 16 for picking up the load is attached to the free end of the telescope 14.

A first section 18 of a pipeline is permanently installed along the base boom 10. On the vehicle side, this first section 18 initially continues via a cranked section 20 of pipeline running in the azimuth axis ζ, which can then be connected via a horizontal section 22 to a connection 24 to a source of fresh concrete (not shown).

On the boom side, the pipeline continues in further sections 26, 28, which are connected to each other or to the first section 18 via commercially available fluid-tight clamp couplings 30, 32 and whose total length 1 is adapted to the telescoped length of the telescopes 12, 14.

The pipe sections 26, 28 are carried on the vehicle and, after the telescopic boom 8 has been extended, are coupled to the pipe section 18 permanently installed on the base boom 10.

BOEHMERT & BOEHMERT, NORDEMANN and PARTNERS

An articulated distribution boom (a foldable distribution pipe) with joint sections 38, 40, 42, 44, designated overall by the reference number 36, is attached to the hammer head 16. The joint sections can be pivoted in a known manner through an angle 41 from 0° to 180°. The last section 44 can be formed by a piece of hose that belongs to a hose that is guided through the articulated distribution boom 36. The connection between the articulated distribution boom 36 and the pipeline is also made by a fluid-tight clamp coupling 33 of commercially available design.

The truck crane according to Fig. 1 is shown in operating position,

in which a high retaining wall 54 is continuously concreted between formwork walls 50, 52.

In order to bring the truck crane 2 into operating position according to Fig. 1, the crane is driven to the concreting location.

The telescopic boom is fully telescoped and bolted in the telescoped position. Then the pipe sections 26, 28 are inserted between the first pipe section 18 on the base boom 10 and the section 38 of the articulated distribution boom 36 and coupled in a fluid-tight manner using the clamp couplings 30, 32 and 33. Then the articulated distribution boom 36 is unfolded so that the mouth of the hose section 44 comes to lie over the gap between the walls 50, 52.

In this way, a retaining wall 54 of great height, an extensive horizontal surface such as the ceiling of an underground car park and the like can be concreted quickly and with minimal use of the mobile crane. Since one hour of work by such a crane is very expensive,

BOEHMERT & BOEHMERT, NORiI-EMANN and PARTNERS

By applying the invention, considerable costs can be saved due to the time savings that can be achieved during concreting.

In the embodiment according to Fig. 2, a first vertical pipe section 64 is installed in the mast 62 of a lattice boom crane, designated overall by the reference number 60, which is coupled in a fluid-tight manner via a coupling 66 to a horizontal pipe section 68 leading to a fresh concrete source.

At the upper end of the lattice boom crane, the pipeline is bent to a horizontal section 70, which is firmly installed on the boom arm 72, which normally carries the counterweight. At the free end 74 of this boom arm 72, an articulated distribution boom 76 is connected via a fluid-tight coupling 77, the joint sections 78, 80, 82 of which are shown in the folded state held on the boom arm 72 by means of remotely operated, releasable holding devices 84.

The trolley 73, which usually carries the load, can be moved horizontally on the load arm 71 of the lattice boom crane 60. This trolley carries several counterweights 75 and is moved to a radius a, which is selected in such a way that the moment generated by the articulated distribution boom 76 in the radius b is balanced out by means of the counterweights 75 in the radius a.

The unfolded working position of the articulated distribution boom 76, in which a high wall is to be concreted between two formwork walls 90, 92, is shown in dashed lines in Fig. 2. It is understood that the weight increases when pumping fresh concrete through the pipeline with the line sections 60, 64, 70, 76.

BOEHMERT & BOEHMERT, NORDEMANN ukd PARTNER

The trolley is then moved to a larger radius a on the boom arm 71 to compensate for a correspondingly increased moment.

Claims (7)

1. Device for the continuous concreting of large structures, in which the fresh concrete is continuously pumped to the concreting location by means of a multi-jointed articulated distribution boom, characterized in that that the articulated distribution boom (36; 76) is attached to a boom end (28; 74) of a crane (2; 60) and that a pipeline (18-28; 64-70) for the fresh concrete is installed on the crane, which pipeline extends to the boom end and is coupled to the articulated distribution boom (36; 76) at its boom-side end. 731 Bremen: Hollerallec 32, PO Box 10 71 D-2800 Bremen Telephone (04 21) 34 90 Fax (04 21) 3 49 17 Telex 244 958 bopat d Berlin: Uhlandstrasse 173/174 DlOOO Berlin Telephone (0 301 8 81 1036 Fax (0 30) 8 81 19 Telex B3 661 frono d Munich: Franz-Joseph-Straße D-8000 Munich 40 Telephone (0 89) 34 70 TrMaX (I'89) 34 70 Tek-x 524 282 forbo d Leipzig: Petersstrasse D (O)-7010 Leipzig Telephone (0037-41)29 45 Fax (0037-41) 28 40 BOEHMERT & BOEHMERT, NORDEMANN and PARTNERS 2. Device according to claim 1, characterized in that the crane is a truck crane (2) with a telescopic boom (8) and that the pipeline (20-28) is installed along the base boom (10) and the extended telescopes (10, 12, 14) of the telescopic boom (8). 3. Device according to claim 2, characterized in that a first section (18) of the pipeline is laid firmly on the base boom (10) and that further sections (26; 28) of the pipeline, the total length of which is adapted to the telescopic length (1) of the telescopic boom (10), can be carried on the vehicle (2) and can be coupled to one another, to the first section (18) and to the articulated distribution boom (36) via fluid-tight shell couplings (30, 32, 33). 4. Device according to claim 2 or 3, characterized in that the pipeline is guided on the vehicle side through the center of the turntable (6) of the vehicle (4) and has a connection (24) for feeding in fresh concrete at a suitable point on the vehicle body. 5. Device according to claim 1, characterized in that the crane is a lattice boom crane (60) in whose mast (62) a first section (64) of the pipeline (64, 68, 70) is permanently installed. 6. Device according to claim 5, characterized in that the articulated distribution boom (76) is attached to the boom arm (72) of the crane boom (71, 72) that normally carries the counterweight, and that to compensate for the load moment exerted by the articulated distribution boom (76) and the fresh concrete conveyed thereby, BOEHMERT & BOEHMERT, NORDEMANN urx PARTNER tes balancing weights (75) are attached at the appropriate radius (a) to the load-bearing boom arm (71) of the lattice boom crane. 7. Device according to claim 6, characterized in that the counterweights (75) are attached to a trolley (73) that can be moved on the said boom arm (71).