Power supply for crane systems
AssigneeWIKA Alexander Wiegand SE & Co. KG
InventorsZivorad GOLUBOVIC, Martin WEIS
Life of this patent
Estimating the term…
Abstract
A power supply for crane systems is provided. In order to transmit greater power at or before a rope length transmitter, the voltage is transformed up in a first converter and transformed back again in a second converter at the end of a cable, at or near a tip of the crane, for the consumers.
Claims16
A power supply for crane systems comprising a mobile crane with a chassis on which a telescopic boom is mounted, over which a suspension rope is guided that is adapted to be wound up in a reel at a first rope end, the suspension rope being guided over a tip of the boom and is provided at a second rope end with a hook, with which loads are adapted to be lifted, wherein at least one consumer is attached to or near the tip of the boom, wherein, to supply power to the at least one consumer a cable, which is adapted to be wound up in a rope length transmitter, is guided along the boom, the power supply comprising:
- a first converter to transmit electrical power, the first converter transforming an electrical voltage to a first voltage value at or before the rope length transmitter;
- and
- a second converter to transform the electrical voltage at the end of the cable at or near the tip of the boom to a second voltage value to supply voltage to the consumer,
- wherein the first voltage value is higher than the second voltage value.
A method for supplying power to a crane system comprising a mobile crane with a chassis on which a telescopic boom is mounted, over which a suspension rope is guided that is adapted to be wound up in a reel at a first rope end, the method comprising:
- guiding the suspension rope over a tip of the boom, wherein a hook is provided at a second rope, with which loads are adapted to be lifted;
- attaching at least one consumer, which comprises a lamp, a winch, and/or a drive, to or near the tip of the boom;
- guiding a cable, which is adapted to be wound up in a rope length transmitter, along the boom to supply power to the at least one consumer;
- transforming, in order to transmit electrical power, an electrical voltage to a first voltage value in a first converter at or before the rope length transmitter;
- and
- transforming the electrical voltage at the end of the cable, at or near the tip of the boom, to a second voltage value in a second converter to supply voltage to the at least one consumer,
- wherein the first voltage value is higher than the second voltage value.
Dependencies are inferred from the claim text.