---
publication_id: "OT-2026-000000080"
title: "Top-loading tower crane systems and associated methods"
published_at: "2026-09-15T19:02:28.048359Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000080"
categories:
  - "lifting-positioning-manipulation/hoists-and-cranes"
keywords:
  - "b66c23/28"
  - "b66c23/185"
  - "b66c23/207"
  - "b66c23/34"
---

# Top-loading tower crane systems and associated methods

## Abstract

A tower crane for performing a lifting a load includes an extendable tower assembly having a central axis and including a plurality of separate tower sections, a climbing assembly including a climbing frame positioned on the tower assembly and a latching assembly to transport the climbing assembly vertically along the tower assembly, and a boom assembly atop the tower assembly and including a crane floor, a boom supported on the crane floor, a lifting member coupled to the boom, and a slew bearing coupled to the crane floor and configured to permit the crane floor to rotate about a rotational axis, wherein the slew bearing includes a first bearing position and a second bearing position spaced from the first bearing position relative to the central axis of the tower assembly.