Modular Tower Crane Substructure for Rapid Transport
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current bottom-slewing tower cranes face challenges in rapid assembly, disassembly, and transport due to complex guying systems and large transport dimensions, requiring significant time and specialized equipment, which is inefficient for short-term construction projects like wind turbine installations.
Innovation Solution
A modular substructure design allowing components to be handled and transported as standard containers, with adjustable guying systems that remain assembled during transport and a climbing device for efficient tower section assembly, enabling quick setup and teardown without the need for extensive reeving of guy ropes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the crane uses a traditional guying system with multiple reeving, then the tower and jib are stabilized, but the assembly and disassembly time increases significantly
Solution Approach 1:
The guying system is divided into separate functional components: a bottle device for the tower guying and a separate bottle device for the jib guying. This segmentation allows each guying system to be adjusted and secured independently, reducing the time required for assembly and disassembly while maintaining the stability of both tower and jib.
Solution Approach 2:
The bottle devices are designed with adjustable mechanisms that allow dynamic adjustment of the guying tension and configuration. This enables quick setup and teardown while maintaining proper stabilization during operation, resolving the contradiction between stability and assembly time.
2Power
If the crane is designed with large transport dimensions to accommodate the slewing platform and tower, then the lifting capability is improved, but the transportability deteriorates
Solution Approach 1:
The crane is divided into separable modules including the substructure with slewing platform, the tower sections, and the jib assembly. Each module can be transported independently on standard transport equipment, eliminating the need for specialized transport while preserving the crane's lifting capability when assembled on-site.
Solution Approach 2:
The crane components are designed to collapse or fold into compact configurations that fit within standard transport dimensions. The tower sections can be disassembled and stacked, the jib can be folded, and the slewing platform can be positioned within the substructure footprint, enabling transport on conventional trucks without sacrificing lifting power.
3Strength
If the substructure is designed to carry the slewing platform and tower, then the structural integrity is maintained, but the transport requirements become specialized
Solution Approach 1:
The substructure is designed as a modular platform that can support the slewing platform and tower during operation but can be disassembled into transportable components. The modular design maintains structural integrity during assembly through proper connection mechanisms while enabling standard transport when disassembled.
4Productivity
If the climbing device is used to assemble tower sections, then the assembly speed is improved, but the device complexity increases
Solution Approach 1:
The climbing device is integrated with the existing crane structure and utilizes the crane's own hoisting mechanism and structural components to perform the climbing function. This multi-functional approach accelerates tower section assembly without requiring a completely separate complex climbing system, as the crane's existing mechanisms are adapted to serve dual purposes.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to a rotating tower crane comprising a tower which is rotatably mounted on a substructure supported on the ground and which supports a boom. The tower and/or the boom are braced by means of a bracing means. In particular, the invention relates to a bottom-rotating tower crane, wherein the tower sits on a rotating platform, which is mounted on the substructure in a rotatable manner about a vertical axis, and supports a preferably adjustable boom. According to the invention, the substructure is assembled from multiple substructure supports, each of which forms a container freight item. As a result of the modular assembly of the substructure from modules which form container freight items, the substructure can be transported on conventional container trucks. The tower and boom bracing means are designed such that the bracing means can remain reeved on the crane even during transportation, and the tower can be assembled and disassembled by means of a climbing device comprising a tiltable climbing shield with a hydraulic drive.