Collapsible Carriage With Pivotable Wheels And Telescopic Chassis
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Solution Overview
Problem
Multi-axle carriages are difficult to transport in a space-saving manner, particularly for accommodating them in a horse trailer, as they require significant space due to fixed wheel track widths and lengths, necessitating the use of multiple towing vehicles or large trucks.
Innovation Solution
The carriage features adjustable wheel track widths and a telescopic chassis, allowing the width and length to be reduced by folding mechanisms, including pivotable wheels and a collapsible structure, enabling it to fit within a horse trailer compartment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the carriage uses fixed wheel track widths and fixed length, then the carriage is stable during operation, but the carriage requires significant space for transport
Solution Approach 1:
The patent applies dynamics by making the wheel links pivotable about vertical axes, allowing the wheel track width to be adjusted dynamically. The links can rotate to change the horizontal distance between wheels, enabling the carriage to transition between a wider operational configuration and a narrower transport configuration. This dynamic adjustment resolves the contradiction between maintaining stable fixed dimensions during operation and reducing space requirements for transport.
Solution Approach 2:
The chassis is divided into multiple detachable parts including front and rear sections that can be separated. This segmentation allows the carriage to be disassembled into smaller components that can be loaded into a horse trailer compartment, directly addressing the space requirement issue while maintaining the ability to reassemble into a complete operational carriage.
2Ease of operation
If the carriage is designed with two axles and fixed dimensions, then the carriage is stable during operation, but multiple towing vehicles or large trucks are required for transport
Solution Approach 1:
The dynamic pivotability of the wheel links allows the carriage to reduce its width during transport by rotating the links to bring wheels closer together. This dynamic dimension change enables a single horse trailer to accommodate the carriage, eliminating the need for multiple towing vehicles or large trucks while maintaining operational stability when the links are in their extended position.
Solution Approach 2:
The detachable and collapsible structure allows components of the carriage to be nested or stacked within the confined space of a horse trailer compartment. The chassis parts, wheels, and body can be arranged in a compact nested configuration during transport, then reassembled into the full two-axle carriage structure for operation.
3Volume of moving object
If the wheel links are made pivotable to adjust track width, then the carriage can be compressed for transport, but the structural complexity increases
Solution Approach 1:
The pivotable wheel links provide a relatively simple dynamic mechanism compared to more complex folding systems. Each link rotates about a vertical axis, requiring only a pivot point and minimal constraint structures. This dynamic solution achieves volume reduction without introducing excessive structural complexity, as the same pivot mechanism serves both operational adjustment and transport compression functions.
Solution Approach 2:
The pivotable link mechanism serves multiple functions: it adjusts the wheel track width for different operational conditions and simultaneously enables the carriage to be compressed for transport. This multi-functionality reduces the need for separate mechanisms, thereby limiting the increase in structural complexity while achieving the desired volume reduction.
4Volume of moving object
If the chassis is made detachable in several parts, then the carriage can be assembled and disassembled for transport, but the ease of operation during assembly and disassembly is reduced
Solution Approach 1:
The chassis is segmented into detachable parts including front and rear sections that can be separated for transport. This segmentation enables the carriage to be disassembled into manageable components that fit within a horse trailer compartment, directly addressing the volume reduction requirement while maintaining reasonable ease of assembly and disassembly through standardized connection interfaces.
Solution Approach 2:
The detachable chassis parts are designed to be easily connected and disconnected, with the assembly process becoming more efficient through practice and the use of simple fastening mechanisms. While initial assembly may require effort, the dynamic nature of the detachable design allows for rapid reconfiguration, improving ease of operation over time and reducing the burden of repeated assembly and disassembly.
Data Source
Figure 1a~1b
Figure 1c~1d
Figure 1e~1g
AI summary
A carriage with a chassis (10, 20), a body (30, 40), a drawbar (11, 21) and at least one pair (P, P1, P2) of wheels (1, 2, 3, 4) arranged on the chassis (10, 20) which are spaced apart from each other in a track width (S, S1, S2), is characterized in that the track width (S, S1, S2) can be reduced for transporting the carriage.