Sensor-Coordinated Lift Arm and Grabber Control for Refuse Collection
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Solution Overview
Problem
Traditional refuse collection vehicles require two operators, one to drive and another to manually handle refuse containers, which increases the risk of injury and inefficiency, and can lead to damage to containers and vehicles.
Innovation Solution
A refuse collection vehicle equipped with a mechanical lift arm and grabber system controlled by sensors and controllers, allowing for automated engagement and positioning of refuse containers, reducing the need for manual intervention and enhancing operational safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual handling of refuse containers is used, then operator flexibility and adaptability are maintained, but operator safety deteriorates and injury risk increases
Solution Approach 1:
The patent replaces manual mechanical handling with an automated mechanical lift arm system that uses hydraulic or electric actuators to engage, lift, and deposit refuse containers. This substitution eliminates direct operator contact with heavy containers, thereby improving safety while introducing automation.
Solution Approach 2:
The patent introduces a mechanical grabber and lift arm as intermediary devices between the operator and the refuse container. These intermediaries perform the hazardous lifting and handling tasks, protecting the operator from direct exposure to heavy loads and potential injuries.
2Productivity
If two operators are used, then operational flexibility is maintained, but productivity deteriorates due to coordination overhead and labor costs
Solution Approach 1:
The patent merges the functions of two operators into a single operator who controls the automated lift arm system from the vehicle cab. This consolidation improves productivity by eliminating coordination overhead between two operators while the automated system handles the physically demanding tasks.
Solution Approach 2:
The lift arm system performs self-service by automatically engaging, lifting, and depositing containers without requiring a second operator. The system serves itself through automated sensing and actuation, reducing labor requirements while maintaining operational efficiency.
3Manufacturing precision
If manual container handling is used, then equipment simplicity is maintained, but manufacturing precision deteriorates leading to container and vehicle damage
Solution Approach 1:
The patent incorporates sensors that detect the position of the lift arm and grabber, providing feedback to the control system. This feedback enables precise positioning of containers during engagement and lifting, preventing damage to containers and vehicle components while managing the complexity through electronic control.
Solution Approach 2:
The patent uses a dynamically controllable lift arm system that can adjust its movement speed, force, and positioning in real-time based on sensor input. This dynamic control allows for precise and gentle handling of containers, reducing damage risk while managing system complexity through adaptive control algorithms.
Data Source
AI summary
A refuse collection vehicle includes a grabber that is operable to engage a refuse container, a lift arm that is operable to lift a refuse container, at least one sensor that is arranged to collect data indicating an angular position of the grabber, at least one sensor that is arranged to collect data indicating a relative positioning of the lift arm, a first controller for adjusting the angular position of the grabber, and a second controller adjusting the relative positioning of the lift arm. The adjustment of the angular position of the grabber is coordinated with the adjustment of the relative positioning of the lift arm.