Periodic motor operation eliminates idling losses and noise while maintaining hydraulic pressure stability.
A crane control system calculates resonance frequencies for unused hooks to generate notch filters that attenuate vibration signals.
Electronic regulating device adjusts maximum lifting moment based on support leg force and extension measurements.
A lifting tool uses a movable mass actuator to align the center of gravity with suspension cables.
Segmented anchor design replaces threaded fastening with radial expansion to maintain load capacity in dirty or wet conditions.
A crane derrick ballast carriage integrates a heavy-duty transport device with the main control system to ensure synchronized movement along a guide.
An automated release mechanism replaces manual handling by using a motor-driven spool to precisely unwind a cord, enabling ground workers to guide loads safely.
A working vehicle jib angle detection system compares physical sensor readings with calculated wire rope feed length data to identify measurement discrepancies.
A rotation mechanism couples fixed and mobile parts via a collector and connector system to maintain electrical continuity during 360-degree horizontal movement.
A flexible edge protector with spacers distributes lifting force over a larger surface area to shield synthetic slings from abrasion.
Nesting the sliding contact device in a shaft recess protects power supply routing from external forces while maintaining compact dimensions.
Transversely elastic covering adapts to the inner scrim cross-section, reducing wear susceptibility caused by fold formation in conventional round slings.
Internal trigger actuation secures load retention while reducing external mechanism complexity.
Segmented balance beams minimize bending moments on fragile loads while ensuring horizontal stability.
A hoist cable guide positions suspension cables near the vessel motion center to reduce sea-state induced sway.
A crane hovering device supports the super-lift counterweight above ground to enable no-load slewing and traveling.
A positioning spring resists gravitational pivoting of a lifting ring shackle, preventing torque on the fixing screw during inclined loads.
A rotary mechanism adjusts crane load rotation using angular position inputs from the upper part of the load carrying device.
A hydraulic rotary drive rotates the rotor of a lifting magnet to switch between receiving and release positions.
Segmenting travel and traverse signals before notching prevents geometric non-linearity, suppressing load shaking during combined operations.
A mobile heave compensator integrates passive gas accumulators and active hydraulic actuators for precise payload motion control.
A hoisting implement uses a swingable link to adjust mast tilt angles without detaching ropes.
A computation part estimates flow quantity during filtered control to generate an early stop signal, resolving boom stopping precision issues.
A self-centering rescue hook captures loads via an elongated throat and pivotable gate.
Relocating the compensator below deck frees crane capacity and simplifies maintenance while stabilizing loads.
Slotted spreader straps in a lift cap distribute weight evenly to prevent grain bin collapse during incremental construction.
A cross-member lifting assembly uses cables and a shackle to suspend wheelchairs for storage.
Hydraulic actuators move engagement elements simultaneously until counterforce differences appear, ensuring reliable grip on oval or varying stiffness piles.