Abstract: A container-lifting spreader includes at least two beams movably supported in a housing and provided a drive by which the beams can be driven in telescopic movements for adjusting the length of the spreader. The drive includes an electric motor and a pusher acting on the beams, the pusher interconnecting the beams for simultaneous telescopic movements in mutually opposite directions in the longitudinal direction of the spreader, and a power transmission operatively coupled between the motor and the pusher. The power transmission includes an input shaft carrying an external gear ring driven by the motor, and an output shaft likewise carrying an external gear ring that operates the pusher, the gear rings in mutual engagement forming an angle gear arranged with an irreversible mesh of teeth such that rotation of the input shaft causes rotation of the output shaft whereas the reverse is prohibited by the irreversible mesh of teeth.

Abstract: A container-lifting spreader includes locking pins insertable into seats formed at the corners of a container and upon rotation about their longitudinal axes are brought in locked engagement therewith. The locking pins are in pairs associated with a common drive effecting simultaneous rotation of the pins between locking and unlocking positions. The drive includes a reversible motor and a power transmission that includes two push rods respectively, each of which is hinged at one end to a locking pin, and at the other end to an operating lever included in the power transmission, such that a driven movement of the lever is transferred via the push rods to rotational movements of the pins. The lever acts as a pivoting arm supported on a rotatable shaft, the arm cooperating with fixed stops that mechanically limit the movement of the lever within an angular space determined by the e distance between the stops.

Abstract: A container-lifting spreader includes locking pins insertable into seats formed at the corners of a container and upon rotation about their longitudinal axes are brought in locked engagement therewith. The locking pins are in pairs associated with a common drive effecting simultaneous rotation of the pins between locking and unlocking positions. The drive includes a reversible motor and a power transmission that includes two push rods respectively, each of which is hinged at one end to a locking pin, and at the other end to an operating lever included in the power transmission, such that a driven movement of the lever is transferred via the push rods to rotational movements of the pins. The lever acts as a pivoting arm supported on a rotatable shaft, the arm cooperating with fixed stops that mechanically limit the movement of the lever within an angular space determined by the e distance between the stops.

Abstract: A container-lifting spreader includes at least two beams movably supported in a housing and provided a drive by which the beams can be driven in telescopic movements for adjusting the length of the spreader. The drive includes an electric motor and a pusher acting on the beams, the pusher interconnecting the beams for simultaneous telescopic movements in mutually opposite directions in the longitudinal direction of the spreader, and a power transmission operatively coupled between the motor and the pusher.