Spiral Belt Pipe Conveyance With Stop-Height Stress Balancing
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Solution Overview
Problem
A large stress is generated at the point where the spiral winding of the first belt and the second belt begins in an expandable pipe structure, reducing its durability.
Innovation Solution
A conveyance system that includes a pipe structure formed by spirally winding two belts, a drive unit for vertical expansion and contraction, a mounting unit, and a control unit that selects a height based on a height history to distribute stress and prevent accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the pipe structure is formed by spirally winding two belts, then the pipe structure can be expanded and contracted vertically, but large stress is generated at the starting point of winding which reduces durability
Solution Approach 1:
The control unit selects stop heights in advance based on historical data to prevent stress concentration before it occurs. By analyzing past stop positions and predicting future stress patterns, the system proactively chooses optimal stop heights that avoid repeated stress at the same location, thereby preventing durability issues before they manifest.
Solution Approach 2:
The control unit uses height history feedback to make intelligent decisions about stop heights. By continuously monitoring and analyzing where the mounting unit has stopped in the past, the system adapts its stop height selection to distribute stress more evenly, avoiding the repetition of stress concentrations at identical locations and improving overall durability.
2Productivity
If the mounting unit stops at the same height repeatedly, then operational efficiency is maintained, but stress accumulates at specific points reducing lifespan
Solution Approach 1:
The control unit introduces periodic variation in stop heights based on historical patterns. Instead of allowing the mounting unit to stop at the same height repeatedly, the system periodically varies stop positions within acceptable ranges, ensuring that stress is distributed across different locations over time while still maintaining operational efficiency through predictable, pattern-based variations.
Data Source
AI summary
A conveyance system for improving the lifespan of an expandable pipe structure formed by spirally winding two belts is achieved. A conveyance system according to one embodiment of the present disclosure includes a pipe structure formed by spirally winding a first belt and a second belt arranged inside the first belt around an axis, a drive unit configured to vertically expand and contract the pipe structure, a mounting unit attached to a tip of the pipe structure, and a control unit configured to select a height at which the mounting unit is to be stopped from among a plurality of candidates for the height based on a height history of the heights at which the mounting unit has stopped in the past.