Vertical Finger Indexing for AGV Base Positioning
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Solution Overview
Problem
Existing methods for indexing and orienting rolling bases in workshops require robust and heavy infrastructure to ensure precise positioning and handling, which is not optimal for controlled Automatic Guided Vehicles (AGVs).
Innovation Solution
A lightweight indexing system using a substantially vertical finger and a housing with retractable latching members, integral with the rolling base and the ground, allowing precise positioning and orientation with minimal effort, leveraging the inertia of the base for optimal retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If robust and heavy infrastructure is used for indexing rolling bases, then precise positioning and handling are ensured, but the infrastructure weight and complexity increase
Solution Approach 1:
The indexing system uses a movable finger that can retract into the ground rather than a fixed robust structure. The finger moves dynamically to engage or disengage from the base, providing precise positioning only when needed while maintaining light infrastructure weight during normal operation
Solution Approach 2:
The elastic member automatically returns the finger to its active indexing position after being displaced, and the latching member automatically engages to secure the finger position. This self-service mechanism eliminates the need for heavy external positioning systems
2Reliability
If robust and heavy infrastructure is used for indexing rolling bases, then reliable stopping and orientation are achieved, but device complexity increases
Solution Approach 1:
The patent replaces heavy mechanical stopping systems with a simple elastic return mechanism. The elastic member provides reliable finger repositioning through elastic force alone, eliminating complex mechanical actuators and control systems while maintaining indexing reliability
Solution Approach 2:
The indexing function is segmented into independent components: the finger for positioning, the elastic member for return force, and the latching member for securing. This segmentation allows each component to be simple and lightweight while collectively providing reliable indexing
3Adaptability or versatility
If minimal infrastructure intervention is used, then ease of layout modification improves, but positioning stability may be compromised
Solution Approach 1:
The finger's ability to retract and extend dynamically allows the system to adapt to different base positions while maintaining stable indexing when engaged. The lightweight finger can be easily repositioned for layout changes yet provides firm positioning during operation
Solution Approach 2:
The elastic member acts as a cushion that absorbs positioning forces and maintains finger contact stability. This elastic cushioning ensures stable indexing while allowing the lightweight finger structure to accommodate layout modifications
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 positioning and orientation of rolling bases with reduced infrastructure intervention, utilizing AGV control to maintain base alignment and orientation efficiently, and allows for easy modification of layout without extensive changes.
Implementation Method 1
retractable against the effect of an elastic member of their return to the active position
Implementation Method 2
take advantage of the inertia of the base, set in motion over this length interval by the VGA and thus optimally tare the retaining force
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The invention relates to means for indexing at least one point (P) of a rolling base (1) in a plane reference frame of the ground (S) on which this base (1) moves, characterized in that they comprise a substantially vertical finger (3,7) and a receiving housing (L) for the end of this finger (3) formed in a slide (5) parallel to the ground carrying ratcheting members for the position of the finger (3) in the slide (5), retractable against the effect of an elastic member for their return to the active position, the finger (3) and the slide (5) being respectively fixed to one or the other of the ground (S) and the rolling base (1).