Crane Vehicle Over-Winding Sensor Detection and Control
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Solution Overview
Problem
The existing crane vehicle systems face the risk of damage due to the possibility of forgetting to attach the over-winding preventive device during the attachment and detachment of the jib-boom, leading to potential collisions and rope breakages.
Innovation Solution
A crane vehicle system that includes over-winding sensors and a controller to ensure the sensors are attached before actuation, with the controller restricting operations if the sensors are not properly installed, and sharing signal lines to reduce the size of the cord reel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the over-winding preventive device is manually detached and reattached during jib-boom attachment and detachment, then the device can be installed on the correct configuration, but there is a possibility of forgetting to attach the device which may lead to collision damage or rope breakage
Solution Approach 1:
The system automatically detects whether the jib-boom is attached and controls the actuator accordingly without requiring manual intervention. The controller monitors the configuration state and enables or disables actuation based on the detected state, making the system self-regulating and eliminating reliance on operator memory
Solution Approach 2:
The system uses sensors to detect the jib-boom attachment state and provides feedback to the controller. The controller then adjusts the actuator control based on this feedback, creating a closed-loop system that automatically prevents actuation when the configuration is inappropriate
2Reliability
If the over-winding preventive device is always attached, then safety is improved, but the device complexity and operational steps increase
Solution Approach 1:
The patent replaces manual mechanical attachment/detachment operations with an automated sensor-based detection system. Optical sensors or other detection devices automatically identify the configuration state, eliminating the need for manual device attachment and detachment while maintaining safety
Solution Approach 2:
The control system serves multiple functions: it monitors the jib-boom attachment state, detects the configuration, controls the actuator operation, and provides safety interlocks. This multi-functional approach eliminates the need for separate manual attachment devices
Data Source
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AI summary
[Subject] To provide a crane vehicle of which the use is restricted in a state in which an over-winding sensor is not attached. [Solution] A device of the present invention executes an actuation control process (S16) of causing the actuator to execute actuation corresponding to an operation signal in response to an output of the operation signal, a stopping process (S19) of stopping the actuation of the actuator in response to an output of a first over-winding signal or a second over-winding signal during the actuation control process (Yes in S17), and a notification process (S13) of notifying whether or not the identification signal has already been output from an over-winding sensor in response to the first output of the operation signal corresponding to specific actuation of reducing a suspension length (Yes in S11 and Yes in S12).