Crane Roll-Over Protection via Hinged Base Frame Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cranes face risks of rolling over due to heavy loads and long distances, posing hazards to people and goods, and existing solutions lack prompt, precise, and safe intervention mechanisms.
Innovation Solution
A crane equipped with a roll-over protection system featuring a hinged base frame constrained by elastic means and a control system that detects the mutual position of its portions to intervene when a threshold condition is reached, preventing rolling over through stopping actuators or emitting safety signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the crane operates with heavy loads at substantial heights and distances, then the lifting capability is improved, but the risk of rolling over increases
Solution Approach 1:
The control system performs preliminary detection of the mutual position between first and second portions of the base frame before rolling over occurs. When the position reaches a threshold condition, the system preemptively carries out predetermined tasks to prevent the harmful effect of rollover, rather than reacting after the damage has occurred.
Solution Approach 2:
The control system continuously monitors the mutual position between the first and second portions of the base frame and uses this feedback information to determine when to intervene. When the detected position reaches a predetermined threshold, the system activates protective actions, creating a closed-loop control that prevents rollover while allowing normal operation within safe parameters.
2Reliability
If the crane structure is made more robust to prevent rolling over, then the safety is improved, but the device complexity increases
Solution Approach 1:
Instead of relying solely on mechanical structural reinforcements to prevent rollover, the patent replaces part of the mechanical prevention approach with a control system that uses sensors and logic to detect and respond to threshold conditions. This substitution allows for lighter structural design while maintaining safety through intelligent monitoring and automated protective actions.
3Loss of time
If the control system intervenes promptly to prevent rolling over, then the safety response time is improved, but the measurement precision requirements increase
Solution Approach 1:
The control system is configured with predetermined threshold values that trigger protective actions before actual rollover occurs. By establishing these thresholds in advance and monitoring for their attainment, the system achieves prompt response without requiring ultra-precise continuous measurement, as long as the threshold condition can be reliably detected.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively prevents crane rollover in both static and dynamic conditions, ensuring safer operations by restricting movements that could lead to rolling over and providing remote control options for enhanced safety.
Implementation Method 1
the first (36) and the second portion (38) being also constrained by at least one elastic means (40)
Data Source
AI summary
A crane for lifting and transporting loads includes a base frame, capable of transferring the loads onto a support surface. A sliding element is slidably constrained to the base frame. An arm capable of moving the loads is hinged to the sliding element. A connection element has a first end hinged to the sliding element, and a second end constrained to the base frame in a mobile manner. Each of a pair of rod elements is hinged to the base frame and to the connection element to form an articulated quadrilateral. A first linear actuator is hinged to the base frame and to the connection element and capable of causing sliding movement of the sliding element relative to the base frame. A second linear actuator is hinged to the sliding element and to the arm capable of causing mutual rotation movement between the arm and the sliding element.