Rail-Guided Cart Roller Positioning for Branching
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Solution Overview
Problem
Rail guided vehicles need to slow down or stop to change the positions of adjustable rollers when navigating through branching/merging parts, especially when these parts are integrated in a continuous manner, which affects travel efficiency.
Innovation Solution
The system employs guide parts with varying protruding lengths and a changing mechanism that allows adjustable rollers to maintain an intermediate position during branching and merging, enabling continuous travel without position changes, using a controller to manage roller positions based on the rail configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the positions of adjustable rollers are changed before reaching the branching part, then the vehicle can navigate the branching part, but the vehicle needs to stop or slow down in integrated branching/merging parts
Solution Approach 1:
The system performs preliminary positioning of adjustable rollers in the straight-travelling section before entering the branching/merging part. The controller commands the rolling element positioning mechanism to adjust roller positions in advance, so that when the vehicle enters the branching/merging part, the rollers are already in the correct configuration, eliminating the need to slow down or stop during the transition.
Solution Approach 2:
The system dynamically adjusts the positions of adjustable rollers based on the vehicle's location and upcoming track configuration. The controller continuously monitors the vehicle's position and commands real-time adjustments of roller positions, enabling seamless transition through integrated branching/merging parts without interrupting motion.
2Adaptability or versatility
If the branching part and merging part are integrated in a continuous manner, then the track layout is compact, but the vehicle cannot maintain normal travel speed
Solution Approach 1:
The system prepares the adjustable rollers in advance during the straight-travelling section, positioning them for the upcoming branching/merging configuration before the vehicle enters. This preliminary positioning allows the vehicle to maintain normal speed through the compact integrated structure without interruption.
Solution Approach 2:
The system ensures continuous motion of the vehicle through the integrated branching/merging part by maintaining appropriate roller positions throughout the transition. The controller manages the rolling elements to provide continuous guidance without requiring the vehicle to stop or slow down, preserving the continuity of the useful action (transportation).
Data Source
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AI summary
A rail guided vehicle provided with a lateral pair of adjustable rollers in height is allowed to travel along travelling rails provided with a lateral pair of guide parts having long and short two vertically protruding lengths. Positions of the adjustable rollers in height may be changed such that both rollers are in an intermediate position or one is in an advanced position and the other is in a retracted position. One travelling rail branches into a first branching side and a branching/merging side, and the branching/merging side merges with a straight-travelling side of another travelling rail. When the rail guided vehicle travels on the one travelling rail toward the first branching side and travels straight on the other travelling rail, the height adjustable roller on the side opposite the branching/merging side takes the advanced position, and when travels on the branching/merging side, the rollers take the intermediate position.