Load-Sensing Conveyance Control for Stable Center-of-Gravity Lifting
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Solution Overview
Problem
Conveyance apparatuses face issues with objects being inclined or falling down when lifted at positions deviating from their center-of-gravity, particularly when the center-of-gravity position is difficult to determine due to varying load configurations.
Innovation Solution
A conveyance apparatus equipped with load sensors to detect the distribution of loads, a calculation section to determine the center-of-gravity position, and a control section to adjust the lifting mechanism to lift the object at this position, ensuring stable lifting and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the lifting mechanism lifts the object at a position deviating from the center-of-gravity position, then the lifting operation can be performed without precise positioning, but the object becomes inclined or falls down
Solution Approach 1:
The system performs preliminary action by detecting the load distribution and calculating the center-of-gravity position before the lifting operation. This allows the conveyance apparatus to position itself accurately at the center-of-gravity location prior to lifting, ensuring stable operation without inclination or falling during the lifting process.
2Reliability
If the conveyance apparatus positions itself accurately at the center-of-gravity position, then the object remains stable during lifting, but the positioning process becomes more complex
Solution Approach 1:
The system uses feedback by detecting the load distribution through load sensors and using this information to calculate and determine the center-of-gravity position. This feedback mechanism enables accurate positioning without requiring complex manual intervention, as the system automatically adjusts based on the detected load distribution to maintain object stability.
3Measurement precision
If load sensors are installed in the lifting mechanism to detect load distribution, then the center-of-gravity position can be calculated accurately, but the device structure becomes more complex
Solution Approach 1:
The lifting mechanism is designed with multi-functionality by integrating load sensors that serve dual purposes: they not only detect the load distribution for calculating the center-of-gravity position but also monitor the lifting operation itself. This universal approach allows the same component structure to perform multiple functions, reducing overall device complexity while maintaining measurement precision.
Data Source
AI summary
Provided is a conveyance apparatus that includes: a lifting mechanism raisable upward and lowerable downward, lifts an object to be conveyed, by bringing the lifting mechanism into contact with the object to be conveyed and raising the lifting mechanism, and moves in a state in which the object to be conveyed is lifted. The conveyance apparatus includes: a plurality of load sensors that is provided in the lifting mechanism and each detects a load received by coming into contact with the object to be conveyed; a calculation section that calculates a center-of-gravity position of the object to be conveyed, based on a distribution of a plurality of the loads that has been detected; and a control section that causes the conveyance apparatus to move to a position, at which the object to be conveyed is liftable at the calculated center-of-gravity position, and causes the lifting mechanism to be raised.