A tensioning assembly including a primary rod and a hydraulic jack. The primary rod being positioned adjacent to a center section of the hydraulic jack. The tensioning assembly further including a frame housing anchored to the hydraulic jack. The tensioning assembly also includes a link rod connected to the primary rod and a primary adjusting and a secondary adjusting nut associated with the link rod to adjust the tension of a cable or line.

A tensioning assembly including a primary rod and a hydraulic jack. The primary rod being positioned adjacent to a center section of the hydraulic jack. The tensioning assembly further including a frame housing anchored to the hydraulic jack. The tensioning assembly also includes a link rod connected to the primary rod and a primary adjusting and a secondary adjusting nut associated with the link rod to adjust the tension of a cable or line.

Shaft locking assemblies for a drive shaft include an assembly hub configured to accommodate the drive shaft, the assembly hub including a stop plate; an assembly hub interior in the assembly hub; a contractible shaft locking sleeve disposed in the assembly hub interior and configured to accommodate the drive shaft, the shaft locking sleeve engaging the stop plate; at least one pusher sleeve engaging the shaft locking sleeve; a fluid pressure space disposed in pressure transmitting relationship to the pusher sleeve; and a fluid pressurizing mechanism disposed in fluid communication with the fluid pressure space. The pusher sleeve is adapted to push against the shaft locking sleeve and the shaft locking sleeve is adapted to contract and push against the stop plate and contract against the drive shaft responsive to introducing a pressurizing fluid into the fluid pressure space. Methods of locking a rotating element on a drive shaft are also disclosed.

The present disclosure relates to a method for controlling the orientation of a crane load, wherein a manipulator for manipulating the load is connected by a rotator unit to a hook suspended on ropes and the skew angle L of the load is controlled by a control unit of the crane, characterized in that the control unit is an adaptive control unit wherein an estimated system state of the crane system is determined by use of a nonlinear model describing the skew dynamics during operation.

The present disclosure relates to a method for controlling the orientation of a crane load, wherein a manipulator for manipulating the load is connected by a rotator unit to a hook suspended on ropes and the skew angle L of the load is controlled by a control unit of the crane, characterized in that the control unit is an adaptive control unit wherein an estimated system state of the crane system is determined by use of a nonlinear model describing the skew dynamics during operation.

A system includes a spreader bar comprising a structural support, a first load coupling, and a second load coupling, and a lift coupling and a drive system coupled to the lift coupling. The system also includes at least one load sensor configured to sense a load coupled to the first load coupling, the second load coupling, or a combination thereof. A controller may be coupled to the drive system and the at least one load sensor, such that the controller is configured to obtain an indication of a center of gravity of the load based on the at least one load sensor, and the controller is configured to operate the drive system to move the lift coupling based on the center of gravity.

A full-unit lifting method for a quayside container crane includes calculating an overall center position of gravity of the quayside container crane full-unit; estimating a lifting height and a floating amplitude required by a main hook of a floating crane according to a water level differential at a dock and a height of the quayside container crane full-unit; selecting the floating crane and obtaining detailed parameters thereof according to basic lifting conditions of the floating crane; selecting a type of the main hook according to a weight of the quayside container crane full-unit, checking whether an interference between the boom of the floating crane and the front boom occurs, and determining an inclination angle of the floating crane during lifting; calculating a load on the lifting wire rope and selecting the lifting wire rope and a shackle; making preparations before lifting; and performing lifting at the dock.

A full-unit lifting method for a quayside container crane includes calculating an overall center position of gravity of the quayside container crane full-unit; estimating a lifting height and a floating amplitude required by a main hook of a floating crane according to a water level differential at a dock and a height of the quayside container crane full-unit; selecting the floating crane and obtaining detailed parameters thereof according to basic lifting conditions of the floating crane; selecting a type of the main hook according to a weight of the quayside container crane full-unit, checking whether an interference between the boom of the floating crane and the front boom occurs, and determining an inclination angle of the floating crane during lifting; calculating a load on the lifting wire rope and selecting the lifting wire rope and a shackle; making preparations before lifting; and performing lifting at the dock.

A load balancer includes an articulating assembly connected with a support mechanism. The articulating assembly is connected to a support assembly where the support assembly is able to secure a load thereto. The articulating assembly articulates the support assembly and thereby the load between a first position and a second position. The articulating assembly includes at least one linkage assembly interposed between the attachment member and the support assembly. The at least one linkage assembly includes an arm and an actuator where the actuator is selectively pivotable relative to the arm. The load balance and the load together have a center of gravity. The center of gravity remains substantially aligned with an attachment to the support mechanism during the articulation of the support assembly between the first position and the second position.

A load balancer includes an articulating assembly connected with a support mechanism. The articulating assembly is connected to a support assembly where the support assembly is able to secure a load thereto. The articulating assembly articulates the support assembly and thereby the load between a first position and a second position. The articulating assembly includes at least one linkage assembly interposed between the attachment member and the support assembly. The at least one linkage assembly includes an arm and an actuator where the actuator is selectively pivotable relative to the arm. The load balance and the load together have a center of gravity. The center of gravity remains substantially aligned with an attachment to the support mechanism during the articulation of the support assembly between the first position and the second position.