A rotary assembly for a hoist includes at least one of a rotary union and a slip ring. A bearing is positioned radially outward of the rotary union and/or slip ring with respect to a central axis. A first plurality of axially extending support columns are radially outward of the rotary union and/or slip ring and fixed to the bearing. A second plurality of axially extending support columns are radially outward of the rotary union and/or slip ring and fixed to the bearing. The second plurality of axially extending support columns is axially opposite the bearing from the first plurality of axially extending support columns.

Described is a system for connecting a lifting device to a load to be lifted. The system includes a first connector member and a second connector member. The first connector member includes at least one pin. The second connector member includes an indexer mechanism defining a track that includes at least one track opening. At least a portion of the second connector is receivable in at least a portion of the first connector. At least a portion of the at least one pin is receivable in the track via the at least one track opening. The first connector member is reversibly coupleable to the second connector member via the pin and the indexer mechanism in response to a first series of longitudinal movements of the first or second connector members.

The invention relates to a suspendable scale for weighing a bundle, comprising: a first part for suspending the scale from a structure; a second part for suspending an implement from the scale; a third part joining the first part and second part, the first part, second part, third part being at least partly radially nesting relative to one another; at least two strain gauges connected to the third part; a wireless transmitter for sending the measurement data to an operator; a self-powered power supply for feeding an electric current to the strain gauges and the wireless transmitter; a first space formed in the scale to integrate the wireless transmitter inside the scale; and a second space to integrate the power supply inside the scale. The invention also relates to an arrangement for hoisting a bundle.

A rotator arrangement for providing a rotating movement between a crane arm or the like and a hydraulic tool, the rotator arrangement comprising: a first attachment piece arranged to be attached to the crane arm or the like, a second attachment piece arranged to be attached to the tool implement, a casing joining the first attachment piece to the second attachment piece, which casing is arranged to carry the loads of the hydraulic tool and includes a bearing or the like allowing a first part of the casing to rotate with respect to a second part of the casing, and a hydraulic rotation motor arranged to provide a rotational movement between the first and second attachment pieces around an axis of rotation, the motor comprising a stator and a rotor, the rotor being arranged inside the stator so as to rotate with respect to the stator around the same axis of rotation as the first and second attachment pieces.

The invention concerns an arrangement for the guidance of flexible lines that run from a crane arm (3) through its end section (2) to a tool (4), that is suspended at the crane arm through a link arrangement (5) and a frame that is a component of a rotator (6) for rotation around a vertical first axis (A) and in a cardan manner around second (B) and third (C) horizontal axes,

For the discrete and protected passage of hoses, it comprises a first holder (35) in an opening (3A) of the end section (2), a second holder (38) in a central region of the rotator (6), a first hose package (1A-1D) that extends between the said first (35) and second holders (38), a penetration (26) in a central region of the rotator (6) and permitting hydraulic fluid to pass through the rotator (6) and onwards to a lower part (18) of the same at least one of the said second (B) and third (C) horizontal axes comprises an open joint.

A power bucket having a first and second bucket half pivotally secured together about a main axis by a pivot pin. The bucket halves are movable between an open and a closed position. A head is disposed above the bucket halves and at least one arm pivotally connects the head to one bucket half while at least one second arm is pivotally connected between the head and the other bucket half. A cylinder support is pivotally mounted to the pivot pin and one end of a hydraulic cylinder is attached to the pivot support. The other end of the cylinder is attached to the bucket. Upon actuation of the cylinders, the cylinders move the bucket halves so that a cutting edge of the bucket half moves in a substantially horizontal plane.

A system comprising a crane and an exchangeable tool. The crane and the tool respectively comprise an upper tool connector with tool retainers and a lower tool connector which can be interconnected, e.g. a male and female connector, e.g. the lower tool connector of the tool being embodied as a shank provided with a shoulder and the upper tool connector as a tool clamp with a female, open-centered body. A tool suspension device comprises the upper tool connector. a travelling block member. The tool clamp has multiple mobile tool retainers adapted toin a non-operative positionallow introduction of the shank of the tool from below into the shank receiving passage andin an operative positionengage below the shoulder of the shank that has been introduced into the passage so as to suspend the tool. The upper tool connector may comprise a bearing allowing for swivelling of the open-centered body, and e.g. a rotational drive operative between the clamp housing and the female, open-centered body to actively drive said swivelling.

A joint element provided with a swing dampener element and comprising a first joint part, a second joint part, and a swing dampener brake. The second joint part comprises a second end part which is detachably fixed to a first end part of the second joint part by a joint part coupling which is adapted to allow the second end part to be moved in an axial direction to a detached position in relation to the first end part, the detached position allowing replacement of active components of the swing dampener brake while the first end part remains bearing-mounted to the first joint part, the active components of the swing dampener brake comprising at least one first brake disc member and at least one second brake disc member.

A rotation control system may be provided for a material handling machine. The rotation control system may include a boom and a work tool attached to the boom. A swing motor may be capable of swinging the boom and the work tool. A work tool motor may be capable of rotating the work tool relative to the boom. An input device may generate a first signal indicative of a desired swinging of the boom and a second signal indicative of a desired rotation of the work tool. A controller may be in communication with the input device, the swing motor, and the work tool motor. The controller may be capable of actuating the work tool motor based only on the second signal during a first mode of operation and may be capable of actuating the work tool motor based on swinging of the boom during a second mode of operation.

A rotation device arrangement includes a structure and a suspension part for suspending the rotation device from a boom. The structure includes a first inner body part and first conduits for leading a pressure medium through the first inner body part. A second outer body part is arranged at least partly around the first inner body part completely rotatably. First connections are fitted for leading the pressure medium through the second outer body part. Second conduits are fitted to at least one of an outer surface belonging to the first inner body part and an inner surface belonging to the second outer body part for leading the pressure medium from the first conduit to the first connections. A bearing is arranged to permit the second outer body part to rotate and to carry loads axially and radially. Second connections attach a direct-drive pressure-medium operated turning device to the structure coaxially to transmit torque.