Refuse Packer Hydraulic Containment and Tailgate Locking
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Solution Overview
Problem
Existing refuse collection vehicles face challenges with hydraulic fluid leaks and hazmat containment, as hydraulic cylinders and lines are exposed, leading to environmental contamination and potential system failures, and there is a need for improved tailgate locking mechanisms and efficient waste egress systems.
Innovation Solution
The design relocates and reduces hydraulic cylinders, incorporates a hazmat containment system using troughs, drip pans, and impermeable sleeves for hydraulic components, and introduces an electrical monitoring system for hose degradation, along with a pneumatic tailgate locking mechanism and a flared storage compartment for improved waste egress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydraulic cylinders and lines are exposed in conventional refuse collection vehicles, then the system structure is simple and easy to access, but hydraulic fluid leaks cause environmental contamination and potential system failures
Solution Approach 1:
The patent extracts hydraulic components (cylinders and lines) from the exposed environment and relocates them into protected compartments within the vehicle body structure. This isolation prevents hydraulic fluid from contacting the external environment, eliminating the harmful contamination effect while maintaining system functionality.
Solution Approach 2:
The patent nests hydraulic components within the vehicle body structure, integrating them into internal compartments and channels. The hydraulic cylinders are positioned inside the cargo area or dedicated housings, with hydraulic lines routed through protected pathways, creating a nested configuration that protects against leaks while preserving accessibility for maintenance.
2Object-affected harmful factors
If hydraulic cylinders are relocated to protected positions, then environmental contamination is minimized, but the complexity of the vehicle body structure increases
Solution Approach 1:
The patent designs the vehicle body structure to serve multiple functions: it contains the cargo area, provides structural support, and simultaneously houses the hydraulic components. The vehicle body panels and internal structures are configured to act as protective enclosures for hydraulic cylinders and routing channels for lines, eliminating the need for separate protective housings and reducing overall structural complexity.
Solution Approach 2:
The patent merges the hydraulic system integration with the vehicle body design, combining what would traditionally be separate systems into a unified structure. The hydraulic component mounting locations and line routing pathways are incorporated directly into the vehicle body fabrication process, creating an integrated design that reduces part count and assembly complexity despite the protective positioning requirements.
3Productivity
If hydraulic cylinders are exposed to refuse material, then the packing operation is effective, but wear and tear on cylinders increases
Solution Approach 1:
The patent extracts the hydraulic cylinders from the refuse material environment while maintaining their functional connection to the packing mechanism. The cylinders are positioned in protected locations outside the direct contact zone with refuse, connected through sealed linkages or bellows, thereby preserving packing efficiency while extending cylinder service life by eliminating abrasive exposure.
4Reliability
If multiple hydraulic components are contained within the vehicle body, then leak containment is improved, but the space available for cargo storage is reduced
Solution Approach 1:
The patent utilizes vertical space and three-dimensional positioning within the vehicle body to accommodate hydraulic components. Rather than occupying horizontal cargo floor space, hydraulic cylinders are mounted on vertical surfaces, overhead structures, or in dedicated vertical compartments, allowing cargo to occupy the primary horizontal loading area while hydraulic systems are positioned in underutilized spatial dimensions.
Data Source
AI summary
A refuse collection vehicle body having a receiving hopper with a pendulum packer device mounted for arcuate movement therewithin, a tapered storage compartment for receiving refuse material from the receiving hopper, a tailgate assembly having a pneumatic mechanism for controlling the tailgate latch mechanism, and an ejection system for dumping the refuse material collected within the storage compartment, the storage compartment having a trough or channel associated with its top portion for housing the hydraulic cylinders associated with the pendulum packer device and the tailgate assembly. The hydraulic cylinder associated with the ejection system as well as the hydraulic tank and hydraulic fluid cooler associated with the vehicle body are all positioned over hazmat containment devices to contain any leakage from these components during normal operation. The tapered storage compartment is formed by joining two rectangular sheets of material to a pair of wedge shaped members.