Track Guided Vehicle Branching Control via Cam-Actuated Rollers
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Solution Overview
Problem
Existing track guided vehicle systems require complex configurations with paired guide grooves and rollers for branching control, leading to potential speed reduction and instability during rectilinear progression and branching.
Innovation Solution
The system employs vertically projecting guide tracks and branching rollers with elevating and lowering mechanisms, using cam plates with spiral cams to control the height of branching rollers, allowing seamless transition between rectilinear progression and branching by varying the contact with guide tracks, eliminating the need for deceleration and ensuring stable high-speed operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If paired guide grooves are provided for branching control, then branching function is achieved, but the running track has a complicated shape
Solution Approach 1:
The invention extracts the branching control function from the guide grooves and transfers it to the branching rollers. The guide grooves are simplified to only provide linear guidance, while the branching rollers mounted on the vehicle body handle the branching decision-making. This separation allows the track structure to be simpler while maintaining branching capability.
Solution Approach 2:
The branching rollers are made movable relative to the guide grooves through elevation and lowering mechanisms. The rollers can be extended to contact the guide grooves for branching or withdrawn for linear movement. This dynamic adjustment allows a single guide groove structure to serve multiple functions, simplifying the overall track design.
2Adaptability or versatility
If branching rollers are elevated and lowered to control branching, then branching control is achieved, but speed reduction is required in front of branching portion
Solution Approach 1:
The elevation and lowering of branching rollers is performed in advance in the rectilinear progression section, before the vehicle reaches the branching portion. This preliminary action allows the vehicle to maintain high speed through the branching portion without requiring speed reduction, as the branching rollers are already in the correct position to guide the vehicle either straight or onto a branch line.
3Adaptability or versatility
If branching rollers contact guide tracks for guidance, then branching is controlled, but interference occurs during elevation and lowering
Solution Approach 1:
The guide tracks are designed with different widths in different sections: narrower width in the rectilinear progression section to allow gap formation during roller elevation, and wider width in the branching portion to ensure contact between rollers and guide tracks for stable guidance. This local variation in guide track quality allows the system to achieve both easy elevation/lowering and reliable guidance without interference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise control of branching rollers to maintain stability and speed, allowing the vehicle to run straight or shift to a branch line without interference, ensuring high-speed operation and eliminating the need for deceleration at branching portions.
Implementation Method 1
cam plates that can be rotatively moved are each provided with a spiral cam used to elevate and lower the corresponding one of the branching rollers via a cam follower
Data Source
AI summary
Guide tracks 56, 56 projecting in a vertical direction are provided in a right and left of a running track 50 and left and right guide rollers 20, 21 are provided on a track guided vehicle and guided using inner surfaces of the left and right guide tracks. Branching rollers 22, 23 each comprising elevating and lowering means are provided in the right and left of the track guided vehicle and outside the right and left guide tracks. Thus, branching and rectilinear progression of the track guided vehicle is controlled by switching between a state where the branching rollers 22, 23 are elevated or lowered to guide the track guided vehicle using outer surfaces of the guide tracks 56, 56 and a state where the branching rollers 22, 23 do not contact with the outer surfaces. Whether the track guided vehicle runs straight or shifts to a branch line can be controlled by contacting one of the branching rollers 22, 23 with the outer surface of the corresponding guide tracks 56, 56, which guide the guide rollers 20, 21 in the section (rectilinear progression section 52) different from the branching portion 51.