Refuse Vehicle Service Lift Layout for Chassis Space Recovery
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Solution Overview
Problem
Existing refuse vehicle systems face challenges in efficiently utilizing chassis space due to service lifts being coupled to the outer portion, consuming valuable space that could be used for storage of components like batteries and fuel tanks, and requiring additional mounts for support.
Innovation Solution
A service lift is configured to interface with the upper surface of the chassis frame rails, positioned within the body's cavity, allowing for space optimization and eliminating the need for additional mounts, thus conserving space for storage and power systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If service lifts are coupled to the outer portion of the chassis, then the body can be lifted for maintenance access, but valuable chassis space is consumed and additional mounts are required
Solution Approach 1:
The service lift is nested within the body cavity rather than being mounted on the outer chassis. The lift mechanism is positioned inside the body's internal space, utilizing the existing cavity volume to house the lift components. This nesting approach eliminates the need for external mounts and prevents consumption of valuable outer chassis space while maintaining full lifting functionality for maintenance access.
2Ease of operation
If service lifts are coupled to the outer portion of the chassis, then the body can be lifted, but additional mounts are required for support
Solution Approach 1:
The service lift mounting is merged with the body structure itself. The lift is integrated into the body cavity and utilizes the body's own structural framework for support, eliminating the need for separate external mounts on the chassis. This merging of the lift system with the body structure reduces overall device complexity while maintaining lifting capability.
3Volume of moving object
If service lifts are positioned within the body cavity, then chassis space is optimized for storage, but the lift must be integrated within limited space
Solution Approach 1:
The body cavity is specifically designed with local structural features to accommodate the service lift. The internal geometry and structural characteristics of the cavity are optimized at the local level to provide mounting points and space for the lift mechanism, allowing integration within the limited internal volume without compromising overall chassis space for storage components.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides efficient space utilization by integrating the service lift within the chassis, enabling storage of components like batteries and fuel tanks while maintaining operational functionality.
Implementation Method 1
The lift actuator includes a base portion positioned within the body and an actuator rod extending from the body and coupled to the chassis, such that the lift actuator is configured to lift and pivot the body relative to the chassis
Implementation Method 2
The lift actuator includes a base portion positioned within the body and an actuator rod extending from the body and coupled to the chassis, such that the lift actuator is configured to lift and pivot the body relative to the chassis
Data Source
AI summary
A vehicle includes a chassis, a body pivotally coupled to the chassis by a pivot assembly, and a lift actuator. The lift actuator includes a base portion positioned within the body and an actuator rod extending from the body and coupled to the chassis, such that the lift actuator is configured to lift and pivot the body relative to the chassis.