Method for the overload protection of a mobile crane
AssigneeLiebherr-Werk Nenzing GmbH
InventorJosef Kaspar Schmid
Life of this patent
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Abstract
The invention relates to a method for the overload protection of a mobile crane, in particular of a crawler-mounted crane, in which component-related geometrical data are stored in a memory. In accordance with a selected set-up, the geometrical data are put together to form a physical simulation model on a simulation computer. Taking into account real measurement data, the required geometrical data, centre of gravity data and forces are calculated, and from these the cut-off values. The crane is switched off when these cut-off values are reached.
Claims20
A method for the overload protection of a mobile crane, comprising the following steps:
- storing component-related geometrical data in a memory (10);
- selecting desired set-up in a selection apparatus (16);
- compiling a physical simulation model from the selected data in a control computer (18);
- entering real measurement data from force and position sensors (20) on a crane side;
- calculating first geometrical data, center of gravity data and forces, and subsequently cut-off values;
- and
- optionally, cutting-off the crane when the cut-off values are reached.
Dependencies are inferred from the claim text.