EP2041017B1 - Method for assembling a tower crane - Google Patents

Abstract

The invention relates to a method for assembling a tipless tower crane and to a tipless tower crane which can be assembled in accordance with the method according to the invention. The method according to the invention permits more rapid assembly of the tower crane and at the same time reduces the risk, in particular for the assembly worker who has to undertake the reeving operations on the hoisting jib head (16), or even eliminates said operations. The tower crane according to the invention which can be assembled by the method according to the invention can be assembled as a result in a substantially shorter time. The method according to the invention has the following steps: constructing a lower tower crane part (20) to the desired height as far as a lower tip part (21); assembling a hoisting jib system (10) separately from the lower tower crane part (20), subsequently constructing a counter-jib (40) and connecting the counter-jib (40) to the crane parts (10, 20) already assembled.

Description

The invention relates to a method for mounting a centerless tower crane (in particular tower crane) and a towerless tower crane, which can be mounted according to the inventive method, comprising: a tower crane base with a point base; a jib system comprising: a jib, a lifting boom mounted on the lifting jib, a trolley mounted on the jib, a hauled on the lifting jib hoist, a sheared on the lifting boom Katzfahrseil; and a counter-jib.

The assembly of a tower crane has hitherto been carried out so that the lower part of the crane is mounted with the tip base and the top of the tower and then first the counter-jib with hoist and then the lifting jib with trolley are mounted on it. Subsequently, the hoisting gear located on the counter-boom is sheared. The Einscherarbeiten make it necessary that for shearing an assembly worker reaches the top of the lifting arm to make there the shearing. This spending and the subsequent cutting in quite airy heights are time consuming and associated with considerable risks for the exporting assembly worker.

It is therefore an object of the present invention to provide a method with which a faster installation of the tower crane is possible and at the same time reduces the risk especially for the assembly worker who has to make the Einschervorgänge on the Hubauslegerspitze, or even eliminated. Furthermore, it is an object of the invention to provide a tower crane which can be mounted using the method according to the invention.

• Aufbauen eine Turmkranunterteils bis zu einem Spitzenunterteil in gewünschter Höhe;
• Zusammensetzen eines Hubauslegersystem getrennt vom Turmkranunterteil aufweisend die Schritte:
  • Bereitstellen eines Hubauslegers;
  • Montieren eines Hubwerks am Hubausleger;
  • Montieren eines Katzfahrwerks am Hubausleger;
  • Einscheren eines Hubseils des Hubwerks am Hubausleger;
  • Einscheren eines Katzfahrseils am Hubausleger;
• Verbinden des Hubauslegersystems mit dem Spitzenunterteil und
• anschließend Aufbauen eines Gegenauslegers und Verbinden des Gegenauslegers mit den bereits montierten Kranteilen.

The object with regard to the method is achieved by the method comprising the following steps:

• Build a tower crane base up to a point base at the desired height;
• Assembling a lifting boom system separate from the tower crane base, comprising the steps:
  • Providing a lifting arm;
  • Mounting a hoist on the lifting arm;
  • Mounting a trolley on the lifting arm;
  • Shearing a hoist rope of the hoist on the lifting arm;
  • Shearing a trolley rope on the lifting arm;
• Connecting the lifting arm system with the tip base and
• then building a counter-jib and connecting the counter jib with the already mounted crane parts.

The advantage here is that the lifting arm system can already be mounted during the construction of the crane base, for example, on the ground and all Einscherarbeiten can be made on the ground, thereby eliminating the driving of the lifting arm to the top by an assembly worker for shearing the ropes. The mounting of the boom system on the tower crane base is to be made quickly, so that the total assembly time of the tower crane is significantly reduced.

An advantageous embodiment of the invention provides that the lifting arm is composed of individual modules. This assembly of individual modules facilitates the transport of the components of the tower crane to the installation site.

With regard to the centreless tower crane according to the invention, the solution according to the invention provides that the lifting boom system is designed so that the tower crane is stable after installation of the lifting boom system and before assembly of the counterjib. By a targeted design of the lifting arm system to the effect that a stable state after assembly is possible before a counter-jib is mounted, the assembly time is reduced considerably.

A further advantageous teaching of the invention provides that the lifting arm is composed of individual modules. The invention proves to be particularly advantageous when the tower crane is a tower crane.

Figur 1

eine Seitenansicht eines erfindungsgemäßen Hubauslegersystems,

Figur 2

eine schematische Darstellung der Montage des erfindungsgemäßen Hubauslegers gemäß Figur 1 und

Figur 3

eine schematische Darstellung der Montage eines Gegenauslegers.

Further advantages of the invention will be explained in more detail with reference to the drawing designed below for a preferred embodiment. Showing:

FIG. 1

a side view of a lifting arm system according to the invention,

FIG. 2

a schematic representation of the assembly of the lifting arm according to the invention according to FIG. 1 and

FIG. 3

a schematic representation of the assembly of a counter-jib.

FIG. 1 shows a side view of a Hubauslegersystems 10 according to the invention, consisting of several individual segments 17a to 17f, which form the lifting arm 17. The Katzfahrseil 15 is in FIG. 1 already shown in the sheared state. The Katzfahrseil 15 is connected to a trolley 14 and a trolley 12, which is shown here with a lower bottle. At the crane below the facing side of the lifting arm 17 is a stop device 18 for attachment to the tower lower crane 20. Here is also a hoist 11 is arranged, with a in FIG. 1 already shown hauled cable 13 is connected. At the side facing away from a crane base 20 side is a fixed point 16 for the hoist rope 13. The hoist rope 13 is in communication with the lower block of the trolley 12 and the fixed point sixteenth

In FIG. 2 the assembly of the lifting arm system 10 with the tower base 20 is shown. The lower crane part 20 comprises a base plate 22, on which a height-adjustable tower 23 is mounted, at the upper end of which a slewing mechanism 25 with a rotatable pivoting part (rotating frame) 24 is located. Also arranged there is the tip base 21. At the upper end, as shown, the lifting boom system 10, which has been raised by a mobile crane vehicle 30 to the desired height, lowered in the direction of arrow A on the crane base 20 and then connected to the crane base 20 , Subsequently, the mobile crane vehicle 30 is separated from the lifting boom system 10 and the resulting sub-crane, consisting of the crane base 20 and the lifting boom system 10, is free, since the design of the components was specifically made for this purpose. That in the FIG. 2 mounted lifting boom system 10 corresponds to that in the FIG. 1 declared. All of the drives, moving parts, and ropes necessary for them are already fully assembled within the system 10 and, apart from minor adjustments, are operational after the power has been previously provided.

To ensure that the stability of the tower crane is guaranteed even in full load operation, a counter-jib 40 is mounted. This is in FIG. 3 shown. The counterjib 40 has already been lifted by the mobile crane vehicle 30 to the desired height. The counter-jib 40 is then brought in the direction of arrow B to the lifting arm and connected thereto. The connection arises for example by the attachment of bolts. Afterwards counterweights can be mounted. Subsequently, the power supply is provided for the drives located on the lifting arm 10 and the tower crane 100 is ready for use after further fine tuning.

LIST OF REFERENCE NUMBERS

100

Tower Crane

10

Hubauslegersystem

11

hoist

12

trolley

13

hoist rope

14

trolley

15

Trolley travel rope

16

benchmark

17

lift boom

17a - 17f

Hubauslegersegment

18

stop device

20

Crane base

21

Top bottom

22

baseplate

23

tower

24

pivoting part

25

slewing

30

mobile crane vehicle

40

counter-jib

41

counterweight

A

Mounting direction Lifting arm system

B

Mounting direction counter-jib

Claims (4)

1. A method of assembling a flat-top tower crane (100), having the steps:

   - construction of a tower crane lower part (20) up to a top lower part (21) at the desired height;

   - assembly of a lifting boom system (10) separately from the tower crane lower part (20), having the steps:

   • provision of a lifting boom (17);

   • mounting of lifting gear (11) on the lifting boom (17);

   • mounting of a trolley travelling winch (14) on the lifting boom (17);

   • reeving of a hoisting line (13) of the lifting gear at the lifting boom (17);

   • reeving of a trolley travelling line (13) at the lifting boom (17);

   - connection of the lifting boom system (10) to the top lower part (21);

   - then construction of a counter boom (40) and connection of the counter boom (40) to the crane parts (10, 20) already mounted.
2. A method according to claim 1, characterised in that the lifting boom (17) is composed of individual modules (17a-17f).
3. A method according to claim 1 or 2, characterised in that a counterweight (41) is mounted on the counter boom (40), wherein the mounting takes place before or after the connection of the counter boom (40) to the other crane parts (10, 20).
4. A method according to any one of claims 1 to 3, characterised in that the tower crane (100) is a revolving tower crane.

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