Electric Refuse Lift Assembly Using Push Chain and Track Guidance
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Solution Overview
Problem
Current refuse vehicle lifting systems are inefficient and environmentally unfriendly, relying on hydraulic systems that require fossil fuels and lack the precision and efficiency needed for modern waste collection.
Innovation Solution
A fully-electric lift assembly for refuse vehicles, comprising a track, carrier, and push chain driven by an electric motor, which translates along the track to lift and empty refuse containers, reducing the need for hydraulic systems and utilizing a split ladder structure for improved structural strength and reduced weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If hydraulic systems are used for lifting refuse containers, then lifting capability is achieved, but fuel consumption increases and environmental friendliness deteriorates
Solution Approach 1:
The patent replaces the hydraulic system with an electric motor-driven mechanical system. The electric motor drives a push chain that moves along a track to lift the carrier and refuse container, eliminating the need for hydraulic fluid and fossil fuels, thereby reducing environmental impact and fuel consumption.
Solution Approach 2:
The patent explicitly eliminates hydraulic systems from the lifting mechanism. Instead of using hydraulic pressure to lift the container, the system uses an electric motor coupled with a mechanical push chain and track system, representing a transition away from hydraulic technology.
2Productivity
If hydraulic systems are used for lifting, then lifting function is provided, but efficiency and precision deteriorate
Solution Approach 1:
The electric motor-driven push chain system provides more precise control over the lifting operation compared to hydraulic systems. The motor can be controlled to move at specific speeds and stop at precise positions, improving both efficiency and precision of the lifting function.
3Weight of moving object
If a traditional lift assembly structure is used, then lifting function is achieved, but weight and structural stress increase
Solution Approach 1:
The lift assembly is divided into separate functional components: the track structure, the carrier, the push chain, and the electric motor. This segmentation allows each component to be optimized independently, reducing overall weight while maintaining structural integrity through proper distribution of loads across multiple elements.
Solution Approach 2:
The patent employs composite construction in the track and carrier structures, combining materials that provide both strength and weight reduction. The track includes channels that provide structural support while minimizing weight, and the carrier is designed with composite elements to withstand lifting loads without excessive weight.
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 fully-electric lift assembly enhances efficiency and reduces environmental impact by using electric motors for lifting and dumping refuse, providing a more robust and environmentally friendly solution for refuse collection, while minimizing the weight and stress on the lifting assembly.
Implementation Method 1
an electric motor configured to drive the push chain
Implementation Method 2
The push chain is configured to exert a pushing force on the carrier to drive the carrier to ascend along the track
Implementation Method 3
The carrier includes multiple slidable members, each slidable member configured to engage the track at a corresponding one of the channels
Data Source
AI summary
A fully-electric lift assembly for a refuse vehicle includes a track, a carrier, and a push chain. The track includes multiple channels that extend along an entire length of a path of the track. The carrier is configured to translate along the path of the track. The carrier includes multiple slidable members, each slidable member configured to engage the track at a corresponding one of the channels. The push chain is configured to couple with the carrier at a first end and be driven by an electric motor. The push chain is configured to exert a pushing force on the carrier to drive the carrier to ascend along the track.