Load Handling Control Using Movement-Based Activation Hold
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Load-handling machines require constant operator interaction with an activation member to prevent accidental operation, leading to discomfort and muscle fatigue, as the operator must maintain near-constant hand contact with the control device.
Innovation Solution
Incorporating a sensor that monitors the machine's movement parameters, such as speed, to allow operation of the load-handling system using the control device without the need for continuous activation of the activation member, by resetting a timer based on movement data or control signals, enabling the operator to operate the machine more comfortably without compromising safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an activation member is added to prevent accidental operation, then safety is improved, but operator comfort deteriorates due to the need for near-constant hand contact
Solution Approach 1:
The system uses the machine's own movement state to automatically manage the activation requirement. When the machine is moving, the control device remains activated without needing continuous operator input, making the system self-managing during operation phases.
Solution Approach 2:
The system changes the activation state parameter of the control device based on the movement parameter of the machine. When movement is detected, the activation requirement parameter changes from 'continuous activation needed' to 'activation maintained', reducing operator burden while preserving safety.
2Reliability
If continuous activation of the control device is required, then accidental operation is prevented, but operator fatigue increases
Solution Approach 1:
Instead of requiring continuous activation, the system uses periodic movement-based triggers. The control device is reactivated periodically based on machine movement events rather than requiring constant operator presence, reducing cumulative operator effort over time.
Solution Approach 2:
The system implements feedback from the machine's movement state to the control device activation status. Movement detection provides feedback that automatically maintains or reactivates control permission, creating a closed-loop system that reduces manual intervention while maintaining safety.
Data Source
AI summary
The invention relates to a machine (1) for handling loads (24), comprising: —a wheeled chassis (2), —a drive system (3) for moving the wheeled chassis (2), —a load handling system (4) carried by the chassis (2), —a control unit (5), a device (6) for controlling the load handling system (4) that can be manually actuated by an operator, the control unit (5) being configured to receive control signals from said control device (6), a member (7) for activating the manually actuatable control device (6). The handling machine (1) comprises a sensor (8) of a parameter representative of a movement of the machine (1), and the control unit (5) is configured to allow the control of the handling system (4) with the control device (6) as a function of at least the parameter representative of a movement of the machine (1).