Segmented fishplate base portion with secondary weld bead distributes mechanical loads to limit stress concentration on the main weld seam.
Segmented connectors with alignment surfaces enable rapid pin insertion, reducing assembly time for large capacity cranes.
Segmented carbody members with integrated ring gear sections connect via trunnions to reduce setup time while maintaining structural strength.
A lattice mast element uses adjustable transverse elements to form a two-dimensional load-bearing structure.
A boom attach device uses a drive cylinder to extend and contract the boom for easy attachment.
Unified limit curves reduce data storage scope while maintaining independent monitoring of stability and component strength for safe crane operation.
Intermediate wheels on the base support the unloaded crane, allowing single-operator leg adjustments without a second helper.
Asymmetric double boom pins counteract unbalanced loading torque to prevent oil leakage and seal wear in single-cylinder telescopic cranes.
A crane jib profile with a segmented contour line enables thinner metal sheets and simpler manufacturing.
Pivotable support carriers fold into the crane pot structure, reducing setup time and meeting regulatory height limits.
A lightweight auxiliary extension device made from composite materials with fibrous structures.
A telescoping jib securing unit uses a single driving bolt to attach an additional jib section.
A steel bushing bridges mismatched bore diameters in tower crane elements, eliminating time-consuming welding and re-drilling operations.
A crane control apparatus filters drive signals to predict boom braking distance and displays the result for operator awareness.