Self-Assembling Guy Supports for Mobile Crane Telescopic Boom

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Solution Overview

Problem

The existing methods for assembling and disassembling telescopic boom guy supports on mobile cranes are complex and time-consuming, requiring multiple steps and external assistance for larger cranes with longer booms, which complicates transport and deployment.

Innovation Solution

A guying system with individually mountable guy supports and an integrated assembly device that allows for self-assembly and storage, featuring adjustable frame parts that can change width for transport and assembly, enabling the crane to position and secure the supports without external help, thus simplifying the process and reducing weight.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If guy wires are mounted as a single unit on the telescopic boom, then assembly is simplified, but weight increases and lifting capacity is reduced

Engineering Contradiction:
Improveassembly simplicityVSAvoidweight of bracing system
Core Design Contradiction:
Ease of operationVSWeight of moving object

Solution Approach 1:

The bracing system is divided into separate guy wire units that can be mounted individually on the telescopic boom, rather than as a single integrated assembly. This segmentation reduces the weight that must be lifted and mounted, while each unit can be independently positioned and secured to the boom.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If the mounting device width is increased to accommodate telescopic boom assembly, then assembly is enabled, but transport width is exceeded

Engineering Contradiction:
Improveassembly capabilityVSAvoidtransport width
Core Design Contradiction:
Ease of operationVSLength of moving object

Solution Approach 1:

The mounting device incorporates adjustable frame parts that can change their relative position to alter the overall width. During transport, the frame parts are positioned to minimize width and comply with road transport regulations. During assembly, the frame parts are adjusted to provide sufficient width for the telescopic boom to be lowered between the guy wires.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If multiple individual lifts are used to position guy wires, then precise positioning is achieved, but time and complexity increase

Engineering Contradiction:
Improvepositioning accuracyVSAvoidassembly time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The mounting device integrates the positioning and support functions into a single unit that can be lifted and positioned in one operation. The adjustable frame parts allow the device to accommodate the telescopic boom while maintaining precise positioning of the guy wires, eliminating the need for multiple separate lifting operations.

Inventive Principle:
Principle #5Merging (Combining)

4Ease of operation

If the mounting device remains attached to the mobile crane, then storage is simplified, but weight and complexity increase

Engineering Contradiction:
Improvestorage convenienceVSAvoidmounting device structure
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The mounting device is designed to serve multiple functions: it acts as a transport platform for the guy wires, a positioning device during assembly, and a storage structure during operation. The adjustable frame parts can be configured for different operations, and the device can be detached when not in use, reducing overall complexity while maintaining versatility.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentEP4086218A1Clamping system and method for a mobile crane telescopic boom
Publication Date: 2022.11.09 LIEBHERR WERK EHINGEN
  • EP4086218A1 patent drawingFigure 1a~1b
  • EP4086218A1 patent drawingFigure 2a~3
  • EP4086218A1 patent drawingFigure 4

AI summary

The invention relates to a bracing system for bracing the telescopic boom of a mobile crane, comprising two bracing supports that can be individually mounted on the telescopic boom and an assembly device for self-assembly of the bracing supports on the telescopic boom and for storing the bracing supports during transport. The assembly device includes two frame parts on which one of the bracing supports can be stored and detachably fixed. The invention further relates to a mobile crane with such a bracing system and a method for self-assembly of the bracing supports of the bracing system according to the invention on a telescopic boom of a mobile crane using the assembly device.