Forklift Load Alignment Sensing for Axial and Tilt Guidance
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Solution Overview
Problem
Lift truck operators face challenges in accurately determining the alignment of equipment to loads, leading to potential load damage, equipment strain, and safety risks due to the lack of effective systems that provide feedback on axial, lateral, and vertical alignment.
Innovation Solution
A system employing pre-arranged parallelism sensors to provide real-time feedback on axial range, lateral, and vertical alignment using a graphic display, with range finding sensors positioned diagonally to detect misalignment and alert the operator, allowing for optimal vehicle positioning and load alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If operators rely on visual judgment from their position, then the system is simple and requires no additional equipment, but alignment accuracy deteriorates leading to load damage and safety risks
Solution Approach 1:
The patent replaces the mechanical/visual judgment system with an optical sensing system. Range finding sensors (laser-based) substitute for the operator's visual estimation, providing precise measurement of distances to the load from multiple positions. This substitution enables accurate determination of axial, lateral, and vertical alignment without relying on human visual judgment limitations.
Solution Approach 2:
The patent introduces a display device as an intermediary between the sensors and the operator. The sensors collect alignment data and the display presents this information in a processed visual format, serving as a mediator that translates complex sensor measurements into actionable guidance for the operator, thereby improving measurement precision while managing system complexity.
2Ease of operation
If multiple separate viewing points are used for different alignment measurements, then comprehensive alignment data is obtained, but operator efficiency deteriorates due to the need to continually adjust viewing points
Solution Approach 1:
The patent merges multiple separate alignment measurements (axial range, lateral alignment, vertical alignment) into a single integrated display interface. Instead of requiring the operator to switch between multiple viewing points or instruments, all alignment information is combined and presented simultaneously on one display, greatly improving ease of operation and reducing operator workload.
Solution Approach 2:
The display device serves multiple functions simultaneously: it shows axial range information, lateral alignment status, vertical alignment status, and provides visual guidance for correction. This multi-functionality eliminates the need for separate viewing points while preserving comprehensive alignment information, directly addressing the contradiction between ease of operation and information completeness.
3Reliability
If alignment feedback is provided in real-time, then load damage and equipment strain are reduced, but the system requires complex sensor integration and processing
Solution Approach 1:
The patent segments the alignment measurement function into three independent sensor positions, each measuring distance from a different location on the mounting platform. This segmentation allows each sensor to perform a simple distance measurement function, while the complexity of integration and data processing is managed centrally through mathematical relationships that combine the three measurements to derive all alignment parameters.
Solution Approach 2:
The system implements real-time feedback by continuously monitoring alignment through the sensor array and immediately displaying alignment status and correction guidance to the operator. This feedback loop enables proactive correction of misalignment before it causes load damage or equipment strain, improving reliability while the feedback mechanism itself manages the complexity through automated processing.
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
This solution enhances accuracy, speed, and safety by reducing load damage and improving operational efficiency, providing a less stressful work environment through precise alignment feedback during material handling.
Implementation Method 1
Each sensor measures a distance (d) from the mounting platform to the load
Data Source
AI summary
A load alignment aid with range finding sensors positioned diagonally on a mounting platform to calculate range, vertical alignment, and horizontal alignment. Each sensor measures a distance (d) from the mounting platform to the load. Where d(1) does not equal d(2) and d(1) does not equal d(3), a misalignment due to tilt or chassis misalignment is detected. The aid further includes a display which may show a graphic representation of the approach to a load and an alert for misalignment notification.