Telescopic Crane Boom Outer Frame Head Design
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Solution Overview
Problem
The existing telescopic crane boom systems require extensive disassembly and the presence of a useless box section when extending the boom, as the innermost section with the head and pulleys must be removed and cannot be reused, limiting transportability and efficiency.
Innovation Solution
The integration of the head and forward mount functions into a frame on the outside circumference of the innermost box section allows additional box sections to be inserted without disassembling the innermost section, enabling extended boom length without unnecessary disassembly, with features like pivotable or sliding pulleys and transverse connectors for efficient reconfiguration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the innermost box section with the head and pulleys is removed to extend the boom, then the boom can be extended, but extensive disassembly work is required and the removed section cannot be reused
Solution Approach 1:
The boom is divided into multiple telescopic box sections that can be independently assembled and disassembled. The head assembly is separated from the innermost box section, allowing the box section to be reused. This segmentation enables modular extension where sections can be added without disposing of existing components.
Solution Approach 2:
The invention recovers the innermost box section after removal by relocating the head assembly to the new innermost section. Instead of discarding the removed box section, it is retained and can be reused in future extensions, eliminating waste and reducing the total number of sections needed.
2Strength
If the head is inserted into the interior of the box section, then it blocks off the cross section, but this makes the components不可移除 except by complete disassembly
Solution Approach 1:
The head assembly is extracted from the interior of the box section and mounted on the outside circumference instead. This extraction allows the box section to remain open and accessible, enabling easy removal and reinstallation of the head without complete disassembly of the box section structure.
Solution Approach 2:
The head assembly is relocated from the longitudinal interior space to the external circumferential surface of the box section. This dimensional relocation allows the head to maintain its functional position while enabling access to the box section interior for easy assembly and disassembly operations.
3Length of moving object
If two box sections with the same cross section are required for extension, then the boom can be extended, but one box section remains useless after extension
Solution Approach 1:
The box sections are designed with universal functionality, where any box section can serve as the innermost section with the head mounted on it. This universality ensures that no box section becomes obsolete or useless after an extension, as each section retains full functional capability and can be reused in future extensions.
Data Source
AI summary
A telescopic crane boom including a plurality of telescopically assembled tubular box sections including a base box section and an innermost box section having an open cross-section, and a boom head with a frame fixed to the outside circumference of the innermost box section. The head has a plurality of deflecting pulleys mounted on the frame, but no part extending inside the open cross section on the innermost base box section, whereby at least one additional box section can be inserted into the innermost box section in order to extend the boom.