The invention relates to a crane, in particular a rotary tower crane, comprising a crane boom, from which a load hook can be raised and lowered via a hoist cable, and an electric power supply on the load hook and/or an optionally provided trolley which can be moved on the crane boom. According to the invention, the electric power is directly generated at the location where it is required, and in the process kinetic energy present at said location is converted into power. According to the invention, the electric power supply comprises a generator which is arranged on the load hook and/or on the trolley and which can be driven by a deflecting and/or running pulley and/or a cable running around the deflecting pulley.

The invention relates to a crane, in particular a rotary tower crane, comprising a crane boom, from which a load hook can be raised and lowered via a hoist cable, and an electric power supply on the load hook and/or an optionally provided trolley which can be moved on the crane boom. According to the invention, the electric power is directly generated at the location where it is required, and in the process kinetic energy present at said location is converted into power. According to the invention, the electric power supply comprises a generator which is arranged on the load hook and/or on the trolley and which can be driven by a deflecting and/or running pulley and/or a cable running around the deflecting pulley.

The invention relates to a crane, in particular a rotary tower crane, comprising a crane boom, from which a load hook can be raised and lowered via a hoist cable, and an electric power supply on the load hook and/or an optionally provided trolley which can be moved on the crane boom. According to the invention, the electric power is directly generated at the location where it is required, and in the process kinetic energy present at said location is converted into power. According to the invention, the electric power supply comprises a generator which is arranged on the load hook and/or on the trolley and which can be driven by a deflecting and/or running pulley and/or a cable running around the deflecting pulley.

The invention relates to a crane, in particular a rotary tower crane, comprising a crane boom, from which a load hook can be raised and lowered via a hoist cable, and an electric power supply on the load hook and/or an optionally provided trolley which can be moved on the crane boom. According to the invention, the electric power is directly generated at the location where it is required, and in the process kinetic energy present at said location is converted into power. According to the invention, the electric power supply comprises a generator which is arranged on the load hook and/or on the trolley and which can be driven by a deflecting and/or running pulley and/or a cable running around the deflecting pulley.

The present invention relates to a lifting device for lifting and vertically, and possibly horizontally, replacing an object. The lifting device comprises a first unit (1) configured with one or more catching parts such as suction pads and a second unit (2) configured to control vertical and optionally horizontal position of the object. The second unit (2) comprises a first attachment position and a second attachment position and the first attachment position is fixed to a vertically extending part (3) of the first unit (1); the second attachment position is fixed to a sliding member (10) of the first unit (1) by a rigid joint configured to transfer all movements induced at the second attachment position by the second unit (2) to a sliding member (10) of the first unit configured to slide between two positions along a longitudinal member (11) of the first unit.

The invention relates to a transport system for vertically transporting goods and persons on an above-ground construction site, comprising a stewing tower crane (40, 300) and at least one construction elevator (10), wherein the stewing tower crane and the at least one construction elevator have shared anchoring (12) and are anchored or can be anchored jointly to a structure (30) by means of said anchoring.

The invention relates to a transport system for vertically transporting goods and persons on an above-ground construction site, comprising a stewing tower crane (40, 300) and at least one construction elevator (10), wherein the stewing tower crane and the at least one construction elevator have shared anchoring (12) and are anchored or can be anchored jointly to a structure (30) by means of said anchoring.

A rotating tower crane for erecting a wind turbine, having a tower and a tower substructure, which is connected to the tower and is intended for supporting the tower, wherein the tower substructure has a supporting cross frame, which has three or more, preferably four, legs, extending from the tower. It is proposed that each leg has fastened on it, on the ground side, a load-distributor plate, which is not connected to the foundation, wherein the load-distributor plates together form the ballast of the tower.

A crane system having a gas turbine that has a manhole on the outer housing thereof, the manhole being designed to open up a maintenance access to hot gas parts of the gas turbine in the open state of the manhole, which is provided with a fastening section; the crane system further has a hoisting mechanism that includes a mating fastening section which is connected to the fastening section of the manhole in such a way that the hoisting mechanism introduces weights that same has to lift into the outer housing of the gas turbine.

A man over board rescue system 100 may comprise a main body 200 with the main body quickly and easily being attached and detached to a ship's bitt. Thus, the system may be quickly set up prior to departing and quickly put away at the end of a voyage. The system allows for the fast and efficient rescue of a person overboard without need for a rescuer to enter the water or to risk bodily injury in retrieving a person in the water. The system provides secure mechanical means allowing for a winch to be used in the support of a person which is a significant departure from the prior art.