Crane Jib Support Link Restraint for Safer Transport Assembly
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Solution Overview
Problem
The rotatable jib and strut support line connecting links in conventional crane attachments are prone to damage and hinder efficient assembly and disassembly during transportation, leading to operational challenges.
Innovation Solution
A crane attachment design that includes link restraint tools to fix the jib and strut support line connecting links in predetermined postures, preventing unintentional rotation and collision during assembly, disassembly, and transportation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the jib support line connecting link and strut support line connecting link are made rotatable to enable flexible assembly and disassembly, then the ease of operation is improved, but the reliability deteriorates due to potential damage during transportation and unintended rotation
Solution Approach 1:
The connecting links are designed with rotatable joints that allow dynamic movement during assembly and disassembly operations, enabling flexible connection and detachment of the jib support line and strut support line to the strut distal end portion
Solution Approach 2:
A restraint tool is provided to prevent unintended rotation of the connecting links during transportation and when not in use, counteracting the potential harmful movement before damage can occur
2Ease of operation
If the connecting links are made rotatable to facilitate attachment and detachment work, then the ease of operation is improved, but the loss of time increases due to difficulty in performing attachment and detachment when the links move
Solution Approach 1:
The rotatable connecting links enable dynamic adjustment during the attachment and detachment processes, allowing operators to position the links optimally for connection work
Solution Approach 2:
The restraint tool serves as an intermediary device that temporarily controls the position of the connecting links during attachment and detachment operations, providing stability when needed while maintaining flexibility when the restraint is released
Data Source
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AI summary
A crane attachment (3) includes a jib support device (8) that supports, from rear, a jib (6) that takes a forward tilted posture with respect to a boom (5) when the boom (5) takes a raised posture. The jib support device (8) includes a link restraint tool (30) configured to be capable of restraining a jib support line connecting link (27) in a jib support line connecting link fixed posture that is a predetermined rotation posture with respect to a strut distal end portion (37) and of restraining a strut support line connecting link (28) in a strut support line connecting link fixed posture that is a predetermined rotation posture with respect to the strut distal end portion (37).