The invention relates to an apparatus for ballast weighing on a crane, comprising at least two ballasting cylinders that are equipped to lift/lower the ballast and that each comprise at least one pressure transducer in the region of the piston and/or rod side, and comprising at least one evaluation unit that is equipped to calculate the mass moved by the ballasting cylinders from the pressures detected by the pressure transducers on retraction and/or extension of the ballasting cylinders, excluding the friction forces occurring in the ballasting cylinders. The invention furthermore is directed to a method for calculating the ballast weight of a crane by means of a corresponding apparatus.

The invention relates to an apparatus for ballast weighing on a crane, comprising at least two ballasting cylinders that are equipped to lift/lower the ballast and that each comprise at least one pressure transducer in the region of the piston and/or rod side, and comprising at least one evaluation unit that is equipped to calculate the mass moved by the ballasting cylinders from the pressures detected by the pressure transducers on retraction and/or extension of the ballasting cylinders, excluding the friction forces occurring in the ballasting cylinders. The invention furthermore is directed to a method for calculating the ballast weight of a crane by means of a corresponding apparatus.

A force sensing carriage for a load carrying vehicle with lift capability has a first carriage component, a second carriage component and at least one bladder filled with a fluid at a predetermined pressure positioned between the second carriage component and the first carriage component. The first carriage component is configured for mounting to the load carrying vehicle. The second carriage component is for contacting a load to be moved and is positionable in alignment with the first carriage component. The bladder at least partially supports the second carriage component in an operating position in which a portion of the second carriage component is spaced away from the first carriage component. Forces exerted on the bladder by the second carriage component increase pressure in the bladder. An indicator circuit with an indicator indicates a warning if a predetermined threshold pressure is exceeded.