Tracked Undercarriage Suspension for Compact Loader Maneuverability
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Solution Overview
Problem
Existing loaders are often too large to maneuver through narrow entryways, making them difficult to access confined spaces, and there is a need for a compact loader with improved maneuverability and functionality.
Innovation Solution
A loader design featuring a compact frame with a tracked drive assembly that includes an endless track, roller wheels, and torsion axles allowing for up-and-down movement, along with a hingedly connected operator cab and HVAC system for improved accessibility and functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the loader is made large in size, then the operational efficiency and carrying capacity are improved, but the maneuverability and ability to access confined spaces deteriorate
Solution Approach 1:
The patent applies dynamics by making the lower run of the track flexible rather than rigid. The lower run is constructed with multiple segments that can bend and flex, allowing the track to adapt to uneven terrain and narrow spaces. This enables the loader to maintain operational efficiency while improving maneuverability in confined areas, as the flexible track can navigate obstacles and tight spaces that would be impossible for a rigid track system.
2Ease of operation
If the loader is made compact, then the maneuverability and accessibility to confined spaces are improved, but the operational efficiency and carrying capacity deteriorate
Solution Approach 1:
The flexible lower run construction allows the compact loader to maintain operational efficiency by adapting to terrain variations. The segmented lower run can flex to accommodate uneven surfaces, ensuring continuous track engagement and preventing slippage, thereby maintaining productivity despite the compact size.
Solution Approach 2:
The patent changes the physical parameter of the track from rigid to flexible by constructing the lower run with multiple flexible segments. This parameter change enables the track to conform to terrain variations, allowing the compact loader to maintain operational efficiency while accessing confined spaces that larger machines cannot reach.
3Stability of the object's composition
If a rigid track system is used, then the structural stability is improved, but the ability to navigate uneven terrain deteriorates
Solution Approach 1:
The patent replaces the rigid lower run with a flexible segmented construction that maintains structural stability through proper segment interconnection. The flexible lower run can bend and flex to navigate uneven terrain while the segments remain structurally connected, providing both adaptability to terrain and structural stability for load-bearing operations.
Solution Approach 2:
The lower run is divided into multiple flexible segments that can independently flex and adapt to terrain variations. This segmentation allows each segment to conform to local terrain conditions while the overall structure maintains structural integrity through the interconnected segments, solving the contradiction between rigidity and adaptability.
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 enables the loader to navigate narrow spaces while maintaining operational efficiency and comfort, with enhanced maneuverability and reduced footprint.
Implementation Method 1
a torsion axle, with the track being entrained on the idler wheels and the one or more roller wheels. The idler wheels are supported relative to the loader frame and support the track adjacent the forward and aft track margins. The torsion axle shiftably supports a single one of the one or more roller wheels relative to the idler wheels and urges the single roller wheel into rolling engagement with the lower run, with the torsion axle permitting up-and-down movement of at least part of the lower run relative to the idler wheels.
Data Source
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AI summary
A compact work machine, such as a compact track loader and/or a compact utility loader, which can carry and operate a wide range of attachments while maintaining a reduced operating footprint.