Segmented Refuse Truck Shield for Material Segregation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-compartment refuse trucks face challenges in efficiently and cost-effectively controlling the opening and closing of side compartments during packing and unloading, leading to potential intermingling of different types of recyclable materials.
Innovation Solution
A composite shield system for each side compartment, comprising an upper and lower segment with hinge mechanisms, allowing for selective angulation and operation in multiple modes to prevent intermingling of refuse, including a fully protected dump mode and partially protected dump mode for efficient unloading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single shield is used for each side compartment, then the structure is simple, but it cannot effectively control opening and closing in multiple modes to prevent intermingling of refuse
Solution Approach 1:
The shield is divided into an upper segment and a lower segment that can move independently relative to each other. The upper segment remains fixed to the body while the lower segment can pivot between closed and open positions, allowing the shield to perform multiple functions (preventing intermingling during packing, allowing sweeping during loading, and enabling passive opening during unloading) without requiring multiple separate components
2Reliability
If the lower segment is fixed in closed position, then refuse intermingling is prevented during packing, but refuse cannot be swept into the compartment during loading
Solution Approach 1:
The lower segment is designed to be dynamic rather than fixed, allowing it to pivot between a closed position (preventing intermingling during packing) and an open position (allowing refuse to be swept into the compartment during loading). This dynamic capability enables the same component to serve multiple operational modes without compromising either function
3Reliability
If the shield is fully closed during unloading, then material segregation is maintained, but the compartment cannot be efficiently unloaded
Solution Approach 1:
The lower segment is designed to passively open during unloading operations, allowing the compartment to be efficiently emptied without requiring active control. The segment pivots automatically as refuse is discharged, maintaining material segregation while enabling complete and efficient unloading at different locations
4Ease of operation
If multiple shields with independent control are used for each segment, then precise control of opening and closing is achieved, but the device complexity and cost increase
Solution Approach 1:
The lower segment is designed to perform multiple functions automatically based on operational context: it closes to prevent intermingling during packing, opens to allow sweeping during loading, and passively opens during unloading. This multi-functionality is achieved through a single pivot mechanism rather than multiple independent control systems, reducing overall device complexity while maintaining precise control where needed
Data Source
AI summary
A shield for a compartment opening of a refuse truck body, comprising an upper segment hinged to the truck body and a lower segment hinged to the upper segment. A source of power selectively pivots the lower segment relative to the upper segment. This enables a first angle of articulation whereby the upper segment covers an upper region of the compartment opening and the lower segment covers a lower region of the compartment opening whereby the shield covers the entire opening of the compartment; a second angle whereby the upper segment covers the upper region of the opening and the lower segment is positioned such that refuse can be swept beneath the lower segment into the lower region of the opening; and a third angle whereby the upper and lower segments fully uncover the compartment opening, whereby refuse can be freely dumped out of the compartment.