Load Handling Control Using Motion-Based Authorization
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Solution Overview
Problem
Existing load handling machines face challenges in preventing accidental operation of control devices while compromising driving comfort, as safety measures require constant activation of an additional member, leading to muscle fatigue and discomfort.
Innovation Solution
Incorporating a sensor that monitors the machine's movement parameters, such as speed, to authorize control of the handling system only when certain conditions are met, allowing the operator to control the machine without constant activation of the safety member, thus enhancing comfort without compromising safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an activation mechanism is implemented to prevent accidental activation of the control device, then safety is improved, but operator comfort deteriorates due to the need for constant control of the activation member
Solution Approach 1:
The system changes the operational parameter from constant activation to conditional activation based on machine movement state. When the machine is stationary, the activation mechanism requires constant control for safety. When the machine is in motion, the system automatically authorizes control without requiring continuous activation, thus improving operator comfort while maintaining safety through motion-based authorization.
Solution Approach 2:
The machine's movement state itself serves as the authorization mechanism. The sensor detects machine movement and automatically enables control authorization without requiring the operator to continuously manage the activation member. The system serves itself by using its own operational state (movement) to control the activation requirement.
2Reliability
If the activation member is required to be constantly controlled to prevent accidental operation, then safety is maintained, but muscle fatigue increases and comfort is reduced
Solution Approach 1:
Instead of continuous activation control, the system implements periodic authorization based on machine movement. The sensor periodically monitors machine state, and control authorization is renewed automatically when motion is detected. This transforms continuous manual activation into periodic automatic authorization, reducing the duration of constant operator control.
3Ease of operation
If a sensor-based movement detection system is implemented, then operator comfort is improved by reducing constant activation control, but device complexity increases
Solution Approach 1:
The patent replaces the purely mechanical constant-activation control system with a sensor-based detection system. The sensor electronically detects machine movement and automatically triggers control authorization, substituting mechanical continuous activation with electronic motion detection and automatic control enablement.
Data Source
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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).