Forklift Transfer Control System for Dynamic Load Height Adjustment
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Solution Overview
Problem
Existing forklift technologies face inefficiencies in installing or loading cargo when the installation surface height changes due to cargo weight, leading to potential cargo separation or reduced work efficiency, particularly in determining cargo grounding and adjusting lifting speeds.
Innovation Solution
A transfer control system that includes lifting or lowering control means, load amount acquisition means, and height acquisition means to specify a second height for lifting or lowering operations based on the initial height and load amount, enabling precise control of the forklift's fork movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the fork is lowered quickly to a position where the lowering drive pressure becomes equal to or less than the threshold value, then the cargo grounding determination is fast, but the loading platform or cargo may be damaged
Solution Approach 1:
The system performs preliminary lowering of the fork to a first position before the final grounding determination. This preliminary action allows the system to safely approach the cargo without immediately applying full lowering force, preventing damage while still enabling quick grounding determination through subsequent pressure monitoring.
2Manufacturing precision
If the height of the loading surface is measured, then the fork positioning is controlled, but it is not possible to cope with a situation in which the height of the loading surface changes while the cargo is loaded
Solution Approach 1:
The system continuously monitors the load amount on the fork during the lowering process. When the load amount reaches a predetermined threshold, the system determines that the cargo has been successfully loaded and grounded, regardless of changes in the loading surface height. This feedback mechanism enables the system to adapt to varying surface heights while maintaining positioning precision.
3Object-affected harmful factors
If the lowering speed of the fork is set to be low, then damage to the loading platform or cargo is avoided, but the work efficiency deteriorates
Solution Approach 1:
The system dynamically adjusts the lowering speed based on the load amount. When the load amount is low, the fork can be lowered at higher speed for efficiency. When the load amount approaches the threshold indicating cargo grounding, the system automatically reduces the lowering speed to prevent damage. This dynamic speed adjustment resolves the contradiction between work efficiency and damage prevention.
Data Source
AI summary
A transfer control system or a transfer control apparatus controls lifting or lowering of a loading portion that loads an object in a mobile body that conveys an object. The transfer control system or the transfer control apparatus acquires a load amount of the loading portion, and information regarding a first height that is a height of a place where the object is moved to and from the loading portion. The transfer control system or the transfer control apparatus specifies, based on the first height, a second height that is one of the heights for lifting or lowering the loading portion and is higher than the first height. The transfer control system or the transfer control apparatus performs a first lifting or lowering control of lifting or lowering the loading portion according to the load amount between a first height and a second height above the place.