Predictive Vibration Control for Industrial Truck Masts
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Solution Overview
Problem
Industrial trucks, such as tri-lateral sideloaders, experience significant vibrations when the cab is raised higher on the mast and when loads are carried, making operations like driving into narrow aisles and pallet placement difficult due to increased amplitude and frequency of vibrations.
Innovation Solution
The integration of a prediction unit coupled with a detection apparatus and control unit that predicts vibrations based on environmental and operational parameters, allowing the control unit to actuate operating components to reduce vibrations by adapting the operation of existing components or introducing vibration-reducing apparatuses, such as split cab carriers or load supports, to counteract predicted vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If the cab is raised higher on the mast to increase operational reach, then the stacking height capability is improved, but the vibration intensity on the mast increases
Solution Approach 1:
The system predicts vibrations before they occur by analyzing detection data from sensors monitoring mast position, load weight, and terrain conditions. The control unit proactively adjusts operating components ahead of time to counteract the predicted vibrations, rather than reacting after vibrations occur. This preliminary action allows the cab to be raised to higher positions while maintaining vibration reduction through pre-coordinated actuation of damping mechanisms.
2Quantity of substance
If the load-carrying apparatus receives heavier loads to increase cargo capacity, then the load capacity is improved, but the vibration intensity on the mast increases
Solution Approach 1:
The detection apparatus continuously monitors operating parameters including load weight, mast position, and vibration levels. This data feeds back to the prediction unit, which adjusts predictions based on actual conditions. The control unit receives this feedback and dynamically adjusts the actuation of operating components to maintain optimal vibration reduction while accommodating varying load weights, thereby preserving both load capacity and vibration control.
3Object-affected harmful factors
If vibration-reducing apparatuses are added to counteract vibrations, then the vibration reduction capability is improved, but the device complexity increases
Solution Approach 1:
The control unit integrates multiple functions into a single system: it receives data from the detection apparatus, processes predictions from the prediction unit, and actuates operating components to reduce vibrations. This multi-functional integration avoids the need for separate dedicated systems for each function, thereby reducing overall device complexity while maintaining effective vibration reduction capability through coordinated control of existing operating components.
Data Source
AI summary
An industrial truck is described, such as a tri-lateral sideloader, comprising a truck body, wheels connected to the truck body by wheel suspensions, a mast, a plurality of operating components designed to carry out operating functions of the industrial truck, a control unit designed to actuate the operating components, and a detection apparatus designed to detect an operating parameter and/or a parameter of the environment. Here, the industrial truck further comprises a prediction unit designed to predict the occurrence of vibrations on the industrial truck based on data provided by the detection apparatus and to provide prediction data to the control unit. Based on the prediction data, the control unit is further designed to adapt the actuation of at least one of the operating components and/or to actuate an apparatus for reducing vibrations such that the vibrations predicted by the prediction unit are reduced.