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Method for operating a crane, and crane

A technology for cranes and lifting hooks, which is applied in the direction of cranes, etc., can solve the problems of reducing the peak value of the net load of the lifting operation, and achieve the effect of realizing the peak net load, increasing the effective extension, and realizing the effective extension

Active Publication Date: 2015-07-15
LIEBHERR WERK BIBERACH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the support of the trolley at the tip of the spreader increases the no-load torque of the spreader system and thus reduces possible net load peaks in lifting operations

Method used

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  • Method for operating a crane, and crane
  • Method for operating a crane, and crane
  • Method for operating a crane, and crane

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0036] figure 1 A side view of a hanger system of a crane according to the invention is shown. A lifting pylon 30 is pivotably connected to the top of the crane tower 10 about a horizontal lifting axis via a joint 20 so as to be liftable. The hanger guy wire 70 extends upward from the crane tower 10 to the hanger 30 through the crane tip to adjust the lifting angle. The hanger 30 can be adjusted in a vertically extending lifting plane by actuating the hanger guy wires 70 .

[0037] The crane configuration shown allows operation of the crane in hoist mode, ie by means of the liftable spreader 30 , as well as operation of the crane in shunt mode. Both modes use the crane rope 40 . A trolley 60 movable relative to the spreader 30 along the longitudinal axis of the spreader may be used in trolley mode. A pair of rope pulleys 62a, 62b are arranged at the trolley 60 and the hook block 61 respectively, so that a two-wire operation of the crane rope is possible during trolley mode...

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PUM

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Abstract

The invention relates to a method for operating a crane having a luffing crane jib and a trolley which can be displaced on the crane jib, wherein the crane can be operated, on the one hand, in a luffing mode and, on the other hand, in a trolley mode. According to the invention the switch between a luffing mode and a trolley mode takes place by virtue of the hoist-rope reeving being altered. The invention also relates to such a crane for implementing the method.

Description

technical field [0001] The invention relates to a method for operating a crane with a hoistable crane pylon and a trolley movably arranged on the crane pylon, wherein it is possible to operate in hoisting mode on the one hand and in trolley mode on the other hand crane. The invention also relates to a crane which selectively allows operation of the crane in trolley mode or hoist mode. Background technique [0002] Various crane systems are known in the prior art which offer certain advantages depending on the field of application. Swivel tower cranes are thus known which have a trolley spreader, in which the spreader always assumes a horizontal position and the load can be moved by means of a trolley over the entire spreader length. This offers the advantage that the suspended load can be moved particularly close to the tower. [0003] Instead, there are tower cranes that have a lifting spreader, also known as a variable spreader. The lifting spreader is fastened to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C23/26
CPCB66C23/26B66C23/16B66C23/66B66C23/166B66C23/18B66C23/36
Inventor 马丁·阿斯法尔格
Owner LIEBHERR WERK BIBERACH