Refuse Vehicle Ejector and Tailgate Control for One-Input Dumping
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Solution Overview
Problem
Conventional refuse vehicle dumping processes are time-consuming and prone to errors, requiring multiple operator inputs and manual manipulation of components, which can lead to inefficiencies and safety concerns.
Innovation Solution
A refuse vehicle equipped with a processor that automates the dumping process by selectively reconfiguring the lock, transitioning the ejector, and opening the tailgate in response to a single input, allowing for fully automated refuse ejection without additional operator intervention, and can be triggered by geographically indicated locations or sensor inputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple operator inputs and manual manipulation are required for the dumping process, then the operator can control each step precisely, but the process becomes time-consuming and prone to errors
Solution Approach 1:
The system uses sensors to automatically detect when the receptacle is in the correct position and when refuse has been fully ejected, eliminating the need for continuous operator monitoring and manual input. The processor autonomously controls the sequence of operations based on sensor feedback, allowing the system to serve itself rather than requiring constant operator intervention.
Solution Approach 2:
The patent replaces manual mechanical control with an automated control system comprising processors, sensors, and electronic actuators. The processor receives sensor signals and automatically actuates the lock and ejector mechanisms, substituting the mechanical operator control system with an electronic automation system that reduces both time and error potential.
2Reliability
If multiple operator inputs are required for the dumping process, then each step can be verified manually, but the process becomes complex and safety concerns increase
Solution Approach 1:
The system incorporates sensors that provide feedback to the processor about the receptacle position, lock status, and ejection completion. This automated feedback loop replaces manual verification steps, allowing the processor to determine when each phase of the dumping process is complete and when to proceed to the next step, reducing complexity while maintaining verification.
Solution Approach 2:
The processor serves multiple functions: it receives sensor inputs, determines receptacle position, controls the lock mechanism, controls the ejector, and monitors process completion. By consolidating these multiple control functions into a single universal controller, the system reduces overall complexity compared to having separate controls for each operation.
3Adaptability or versatility
If manual manipulation of components is required, then the operator can respond to unexpected conditions, but the process becomes slower and less efficient
Solution Approach 1:
The automated system monitors its own operational state through sensors and autonomously adjusts the dumping process based on detected conditions. The processor receives real-time feedback from sensors about receptacle position and ejection status, allowing the system to self-regulate and maintain optimal performance without requiring operator intervention for routine adjustments.
Data Source
AI summary
A refuse vehicle includes a chassis, a body, a lock, a tailgate, an ejector, an actuator, a second actuator, and a processor. The body defines a receptacle for storing refuse. The lock is coupled to the body and is configured to releasably secure a movable tailgate. The receptacle contains the ejector. The ejector can transition from a first position that is spaced from the tailgate to a second position proximate the tailgate. The actuator is configured to transition the ejector from the first position to the second position. The second actuator is configured to move the tailgate. The processor is configured to selectively unlock the tailgate and transition the ejector from the first position to the second position in response to receiving a single input to thereby eject refuse from the receptacle without receiving multiple inputs.