Refuse Vehicle Hydraulic Line Routing for Frame Rail Clearance

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Solution Overview

Problem

Refuse vehicles face structural degradation due to forces exerted by compacted waste, leading to complexity in manufacturing and potential failures, particularly in the hydraulic systems and actuator components.

Innovation Solution

A refuse vehicle design incorporating a hydraulic system with a fluid container integrated with a filter and bypass sensor, featuring a pump and hydraulic lines that extend between frame rails to provide clearance and simplify manufacturing, serviceability, and compatibility with various axle configurations, while integrating a pusher axle for load distribution and enhanced maneuverability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If hydraulic lines are routed through frame rails with connectors, then clearance between body and chassis is provided and manufacturing is simplified, but the hydraulic system becomes more complex and vulnerable to structural degradation

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidhydraulic system complexity
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The hydraulic line is divided into multiple segments: a first portion extending through the frame rail via a connector, and a second portion extending between frame rails. This segmentation allows the hydraulic system to adapt to different chassis configurations while maintaining structural integrity and simplifying manufacturing processes.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If the body is coupled on multiple different chassis with different axle configurations, then versatility is improved, but the hydraulic line may interfere with chassis components

Engineering Contradiction:
Improvechassis compatibilityVSAvoidhydraulic line interference
Core Design Contradiction:
Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The hydraulic line configuration is made dynamic and adaptable through the connector system that extends through the frame rail. This allows the hydraulic line to be positioned and routed differently depending on the specific chassis configuration, avoiding interference with various axle arrangements while maintaining functionality across multiple chassis types.

Inventive Principle:
Principle #15Dynamics

3Volume of moving object

If hydraulic lines extend between frame rails, then space optimization and clearance are achieved, but reliability may be reduced due to exposure to structural degradation forces

Engineering Contradiction:
Improvespace optimizationVSAvoidhydraulic system reliability
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The hydraulic line is nested within the structural framework by routing it through connectors integrated into the frame rails. This nesting approach optimizes space utilization while providing protective integration with the chassis structure, reducing exposure to harmful external forces while maintaining the necessary clearance between body and chassis components.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 design optimizes space, reduces failure rates, standardizes body layouts, improves integration with chassis designs, and facilitates remote monitoring, thereby enhancing the reliability and versatility of refuse vehicle operations.

Implementation Method 1

The pump is configured to pressurize a fluid

Methodology Applied
Scientific EffectHydraulic pressure: Pressure Increase

Implementation Method 2

The hydraulic line is configured to fluidly couple with an outlet of the pump and an inlet of the hydraulic cylinder

Methodology Applied
Scientific EffectFluid flow:

Data Source

PatentUS20230356938A1Hydraulic system for refuse vehicles
Publication Date: 2023.11.09 OSHKOSH CORPORATION
  • US20230356938A1 patent drawing
  • US20230356938A1 patent drawing
  • US20230356938A1 patent drawing

AI summary

A refuse vehicle includes a chassis, a body, and a hydraulic system. The body is coupled with the chassis and includes a first frame rail and a second frame rail. The hydraulic system includes a pump, a hydraulic cylinder, and a hydraulic line. The pump is configured to pressurize a fluid. The hydraulic cylinder is configured to receive the fluid and extend or retract. The hydraulic line is configured to fluidly couple with an outlet of the pump and an inlet of the hydraulic cylinder. The hydraulic line is configured to extend laterally through the first frame rail by fluidly coupling with a connector that extends through an opening in the first frame rail. A portion of the hydraulic line extends in a longitudinal direction between the first frame rail and the second frame rail from the connector to the hydraulic cylinder.