Described is an operator vehicle, comprising: a platform (2), equipped with a seat (3); a tower (T), coupled to the seat (3) in a rotatable fashion about a main rotation axis; motor means, arranged to rotate the tower (T) about the main axis; a detector, arranged to detect the movement of the angular position of the tower towards a reference angular position relative to the main axis, and to emit a corresponding proximity signal.

A crane housing having a substantially cylinder-shaped circumferential wall with a lower section and lower end mounted to a slew bearing of substantially the same diameter includes a boom support structure to support an inner end of a pivotal boom arranged at a front side of the crane housing. The boom support structure includes at least two box elements of each of which an end portion overlaps with and is integrated with the upper section of the circumferential wall. Oblique strengthening ribs are mounted onto and integrated with a side of the circumferential wall and extend from a respective box element end portion in an oblique downwards direction towards the lower end of the wall.

A crane housing having a substantially cylinder-shaped circumferential wall with a lower section and lower end mounted to a slew bearing of substantially the same diameter includes a boom support structure to support an inner end of a pivotal boom arranged at a front side of the crane housing. The boom support structure includes at least two box elements of each of which an end portion overlaps with and is integrated with the upper section of the circumferential wall. Oblique strengthening ribs are mounted onto and integrated with a side of the circumferential wall and extend from a respective box element end portion in an oblique downwards direction towards the lower end of the wall.

Systems and methods for providing a rotatable boom attachment that is rotatable about at least two different axes with respect to an attached boom are described. A system embodiment includes, but is not limited to, a body portion configured to couple to a distal end of a boom, the body portion coupled with a rotational actuator configured to rotate the body portion about a first rotational axis with respect to the boom; a connecting arm rotatably coupled to the body portion; and a motor configured to drive the connecting arm about a second rotational axis having an orientation differing from the first rotational axis, wherein at least one of the body portion or the connecting arm includes a mounting site configured to removably couple to one or more implements.

A limited rotation slewing ring crane comprises: a pedestal, a column rotatively coupled, about a first rotation axis, to the pedestal by a slewing ring rotative coupling, and means for limiting the relative rotation of the column with respect to the pedestal. The crane further comprises a rotative sensor adapted to measure a rotation angle of the column with respect to the pedestal, wherein said rotation sensor comprises: a tubular body axially extending from the base of the column and rotatively integral with the same; a stationary body connected to the pedestal and a wheel, rotatable with respect to the stationary body about a second rotation axis, which is meshed by the tubular body, wherein the second rotation axis of the wheel with respect to the stationary body is offset with respect to the first rotation axis of the column with respect to the pedestal; means for sensing the angular position of the wheel with respect to the stationary body.

Crane assembly including a crane base, a column, and a first actuator for rotating the column in relation to the crane base. A crane boom system includes a liftable and lowerable crane boom which is articulately connected to and movable in relation to the column by a second actuator. A support arrangement includes a stabilizer beam and two stabilizer legs, wherein the two stabilizer legs are arranged to be extended from the stabilizer beam and set to ground during operation of the crane boom system to support the stability of the vehicle and crane assembly. A battery arrangement includes a battery cell, and a battery circuitry unit provided with an electrical power take off, and a battery mounting assembly structured to fixedly mount the battery arrangement to the stabilizer beam. The battery arrangement is configured to electrically operate the first actuator and the second actuator via the electrical power take-off.

Crane assembly including a crane base, a column, and a first actuator for rotating the column in relation to the crane base. A crane boom system includes a liftable and lowerable crane boom which is articulately connected to and movable in relation to the column by a second actuator. A support arrangement includes a stabilizer beam and two stabilizer legs, wherein the two stabilizer legs are arranged to be extended from the stabilizer beam and set to ground during operation of the crane boom system to support the stability of the vehicle and crane assembly. A battery arrangement includes a battery cell, and a battery circuitry unit provided with an electrical power take off, and a battery mounting assembly structured to fixedly mount the battery arrangement to the stabilizer beam. The battery arrangement is configured to electrically operate the first actuator and the second actuator via the electrical power take-off.

An offshore wind turbine installation vessel includes a crane provided with a computerized crane control system. The computerized crane control system is linked to the slew drive, the luffing drive, and the hoisting winch of the crane, and is programmed to perform a foundation pile installation routine providing a coordinated pattern of slew motion of the superstructure and of luffing motion of the boom structure, as well as operation of the hoisting winch so that the load connector of the crane moves from a foundation pile pick up position thereof, where the load connector is connected to the top end of a horizontally oriented foundation pile stored on a storage deck, to a foundation pile overhoarding position thereof, wherein the foundation pile is in vertical suspended from the load connector, outside of the hull.

A rough terrain crane is equipped with dashboard cameras and digital cameras for capturing bird's-eye view image thereof. The equipment performs, when a load factor reaching 90%, a process of recording start for starting image data recording with the digital camera and a process of storing measurement value for recording a load factor concurrently with the process of recording start. The image data is recorded with the digital camera associated with the above activation condition, among the digital cameras installed in the rough terrain crane.

A rough terrain crane is equipped with dashboard cameras and digital cameras for capturing bird's-eye view image thereof. The equipment performs, when a load factor reaching 90%, a process of recording start for starting image data recording with the digital camera and a process of storing measurement value for recording a load factor concurrently with the process of recording start. The image data is recorded with the digital camera associated with the above activation condition, among the digital cameras installed in the rough terrain crane.