Abstract: A crane (2), more particularly a mobile fast-erecting crane, having at least one supply connection to which a supply line (16), more particularly a power cable, can be connected, wherein the supply line can be wound on a cable drum (15), which can be mounted on a drum mount (10) on the crane, with the cable drum being mounted to rotate on a drum support frame (18), which has running gear (18) for moving the cable drum over the ground and which has releasable mounting means, shaped to match the drum mount of the crane, for separably mounting the drum support frame on the drum mount of the crane. The invention further relates to a cable drum unit for winding a supply line (16) of a crane (2).

Abstract: The present invention relates to a crane with a height-adjustably mounted control or personnel stand that can be lifted and lowered by at least two lifting elements, wherein the two lifting elements are articulated to a balancing rocker that is mounted on a rocker bearing head connected to the control or personnel stand so as to be luffable about a horizontal pivot axis, wherein a monitoring and/or safety device is provided to monitor and/or ensure the safety of the control stand. According to the invention, the pivot axis is configured as a measurement axis for detecting the load state of the luffable bearing of the balancing rocker and for providing a load signal to the monitoring and/or safety device.

Abstract: The invention relates to a mobile construction crane comprising a superstructure and an undercarriage, wherein one or more electrical consumers are provided in or at the superstructure, wherein a supply of the one or more electrical consumers with electrical energy takes place by at least one current generator installed in the undercarriage.

Abstract: The present invention relates to a crane, for example in the form of a fast-erecting crane comprising a telescopic and/or luffing tower, having a crane controller for controlling crane movements by means of drive devices, wherein the crane controller has a monitoring device for monitoring stability and limiting crane movements if a load limit is reached. According to the invention, the monitoring device has a wind resistance detection unit for detecting at least one variable wind resistance parameter which influences the wind resistance of the crane, and is designed to change the load limit depending on the detected wind resistance parameter and/or to consider different load limits depending on said wind resistance parameter.

Abstract: The invention relates to a tower crane having a tower which carries a jib, from which a hoisting cable runs off, wherein a guying system is provided and runs, at least in part, along the tower and is spread out, by means of guy supports, in a direction transverse to the longitudinal center plane of the crane, this plane running through the tower and the jib, wherein at least one pair of guy supports which are spread out in a V-shaped manner are articulated on the tower, between the lower end of the latter and the jib.

Abstract: A crane (2), more particularly a mobile fast-erecting crane, having at least one supply connection to which a supply line (16), more particularly a power cable, can be connected, wherein the supply line can be wound on a cable drum (15), which can be mounted on a drum mount (10) on the crane, with the cable drum being mounted to rotate on a drum support frame (18), which has running gear (18) for moving the cable drum over the ground and which has releasable mounting means, shaped to match the drum mount of the crane, for separably mounting the drum support frame on the drum mount of the crane. The invention further relates to a cable drum unit for winding a supply line (16) of a crane (2).

Abstract: The present invention relates to a crane with a height-adjustably mounted control or personnel stand that can be lifted and lowered by at least two lifting elements, wherein the two lifting elements are articulated to a balancing rocker that is mounted on a rocker bearing head connected to the control or personnel stand so as to be luffable about a horizontal pivot axis, wherein a monitoring and/or safety device is provided to monitor and/or ensure the safety of the control stand. According to the invention, the pivot axis is configured as a measurement axis for detecting the load state of the luffable bearing of the balancing rocker and for providing a load signal to the monitoring and/or safety device.

Abstract: The invention relates to a mobile construction crane comprising a superstructure and an undercarriage, wherein one or more electrical consumers are provided in or at the superstructure, wherein a supply of the one or more electrical consumers with electrical energy takes place by at least one current generator installed in the lower undercarriage.

Abstract: The present disclosure concerns a crane, in particular a tower crane, with a jib from which a load hook can be raised and lowered via a hoisting cable, and with an electric power supply to the load hook and/or to a trolley that may be movable along the crane jib. According to the disclosure, the electric power supply to the load hook and/or to the trolley is at least partly conducted by a running cable which transmits tractive forces for the crane operation.

Abstract: The invention relates to a method of operating a crane having a luffable crane boom and having a trolley travelable at the crane boom, wherein the crane can be operated in a luffing mode, on the one hand, and in a trolley mode, on the other hand. In accordance with the invention, a switch is made between a luffing mode and a trolley mode by varying the hoist rope reeving. The invention further relates to such a crane for carrying out the method.

Abstract: The present disclosure concerns a crane, in particular a tower crane, with a jib from which a load hook can be raised and lowered via a hoisting cable, and with an electric power supply to the load hook and/or to a trolley that may be movable along the crane jib. According to the disclosure, the electric power supply to the load hook and/or to the trolley is at least partly conducted by a running cable which transmits tractive forces for the crane operation.

Abstract: The invention relates to a method of operating a crane having a luffable crane boom and having a trolley travelable at the crane boom, wherein the crane can be operated in a luffing mode, on the one hand, and in a trolley mode, on the other hand. In accordance with the invention, a switch is made between a luffing mode and a trolley mode by varying the hoist rope reeving. The invention further relates to such a crane for carrying out the method.