OPENTECHNICAL PUBLICATION
OT-2026-000002031

Tower crane step-changing device and tower crane

Published: 2026-09-15T19:10:19.393999Z
Permanent URL: https://opentechnical.org/p/OT-2026-000002031
Categories: Lifting, Positioning & Manipulation > Hoists and Cranes

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ABSTRACT

Provided is a tower crane and a tower crane step-changing device, which
includes a step-changing frame and a step-changing swing rod. The
step-changing frame includes two supporting arms and a connecting crossbeam
connecting them. The upper ends of the two supporting arms are both hinged to
an upper vertical web member, and the lower ends of the two supporting arms
are each provided with clamping openings corresponding to a step. The upper
end of the step-changing swing rod is hinged to the upper vertical web member
and is configured to push or pull the connecting crossbeam when a force is
applied to the lower end. Operators can use the step-changing swing rod to
drive the step-changing frame to swing, to make it catch or detach from the
step, resulting in less effort than directly controlling the step-changing
frame. In this way, even one operator can operate a heavy step-changing frame,
effectively improving the step-changing efficiency.

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OpenTechnical publication OT-2026-000002031
Published 2026-09-15T19:10:19.393999Z
https://opentechnical.org/p/OT-2026-000002031