Adaptive Load Diagram Control for Telehandler Stability
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Solution Overview
Problem
Current safety systems for self-propelled operating machines, such as telehandlers, are overly conservative and impose rigid limitations on arm movement based on load capacity, leading to inefficient operation and the need for multiple specialized equipment configurations.
Innovation Solution
A safety system with a processing unit that selects load diagrams based on operating conditions using sensors and a recognition device to tailor movement constraints to specific loads and apparatus configurations, allowing for more flexible and safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conservative safety systems are used to ensure machine stability, then safety is improved, but operational flexibility and productivity deteriorate
Solution Approach 1:
The patent applies dynamics by making the safety system adaptive rather than static. The control unit dynamically adjusts the load diagram parameters based on real-time operating conditions detected by sensors (slope, wind, ground conditions). This allows the system to maintain stability when needed while permitting greater operational flexibility when conditions allow, resolving the contradiction between conservative safety and productive flexibility.
Solution Approach 2:
The patent changes the parameters of the load diagram based on operating conditions. Instead of using fixed conservative limits, the system modifies the spatial boundary parameters of the load diagram in real-time according to detected conditions (slope, wind speed, ground firmness). This parameter adaptation allows the machine to operate more efficiently while maintaining safety margins.
2Adaptability or versatility
If multiple specialized cages and equipment configurations are provided to meet different operational needs, then operational versatility is improved, but device complexity and cost increase
Solution Approach 1:
The patent makes a single cage or apparatus multi-functional by enabling it to operate under different load diagram parameters based on operating conditions. Instead of requiring separate specialized cages for different tasks, the universal safety system adapts the operational parameters to suit various working conditions, allowing one piece of equipment to perform multiple functions safely.
Solution Approach 2:
The system dynamically adapts the operational constraints for a given apparatus based on real-time conditions rather than requiring static specialized configurations. This dynamic reconfiguration allows the same equipment to be used across different operational scenarios without physical modification, reducing the need for multiple specialized pieces of equipment.
3Reliability
If fixed load diagrams are imposed to ensure safety, then stability is maintained, but operational efficiency and flexibility deteriorate
Solution Approach 1:
The patent replaces fixed load diagrams with dynamic ones that adjust in real-time based on sensor data. The control unit continuously monitors operating conditions (slope, wind, ground conditions) and modifies the load diagram parameters accordingly. This dynamic approach maintains safety margins when conditions require them while allowing more efficient operation when conditions permit, resolving the contradiction between fixed safety constraints and operational efficiency.
Solution Approach 2:
The system uses feedback from sensors monitoring operating conditions to continuously adjust the load diagram parameters. The control unit receives information about slope, wind speed, and ground conditions, then modifies the spatial boundary parameters of the load diagram in response. This closed-loop feedback mechanism ensures safety while optimizing operational efficiency based on actual conditions.
Data Source
AI summary
Described is a safety system for a self-propelled operating machine (1) comprises a processing unit (3) which includes: a memory module (31) in which a plurality of load diagrams is stored; a limiting module (32) configured for limiting the operational possibilities of actuators of the machine (1), on the basis of a load diagram; a measuring device (41, 42) for acquiring operating parameters relative to various operating conditions of the operating machine (1); and a selection module (33) configured for selecting from the memory module (31) a load diagram on the basis of an operating parameter acquired by the measuring device (41, 42).