Parallel Maneuvering System for Simultaneous Wheel Steering
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Solution Overview
Problem
Conventional steering systems for portable and mobile lifting devices with heavy, unbalanced loads lack simultaneous wheel steering, leading to instability and limited maneuverability, especially in industrial settings where tight turns and varied directional movement are necessary.
Innovation Solution
A parallel maneuvering system that allows individual wheels to be steered simultaneously through a coupler mechanism with adjustable coupling arms and an eccentric steering crank, enabling coordinated rotation of all wheels for enhanced stability and flexibility, including the use of self-driven or Mecanum wheels and steering brakes for precise control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional steering systems are used, then the device can move in a straight line, but it cannot make tight turns or achieve varied directional movement
Solution Approach 1:
The steering system is segmented into individual wheel steering mechanisms, where each wheel can be steered independently. This is achieved through separate steering linkages and crank mechanisms for each wheel, allowing the device to achieve complex maneuvers like tight turns and crab movements that would be impossible with a conventional unified steering system.
Solution Approach 2:
The steering system employs dynamic adjustment capabilities through adjustable coupling arms and linkages. The coupling arms can be adjusted to change the steering geometry, enabling the system to adapt to different turning radii and directional requirements. This dynamic reconfigurability allows the device to transition between straight-line travel and tight-turn modes efficiently.
2Stability of the object's composition
If individual wheels are steered simultaneously, then stability is improved, but the device complexity increases
Solution Approach 1:
The patent merges multiple steering functions into an integrated parallel maneuvering system. The coupling linkages connect the steering mechanisms of multiple wheels in parallel, so that a single input motion at the steering crank produces coordinated steering of all wheels simultaneously. This merging approach maintains device stability through coordinated wheel movement while managing complexity through shared mechanical components.
Solution Approach 2:
The steering system achieves multi-functionality by enabling the device to perform multiple maneuvers using the same mechanical structure. The parallel coupling mechanism can produce different steering patterns (parallel steering for straight travel, convergent steering for tight turns, crab motion for lateral movement) by adjusting the coupling arm positions, eliminating the need for separate steering systems for each maneuver type.
3Adaptability or versatility
If the coupling arms are made adjustable, then adaptability is improved, but the manufacturing complexity increases
Solution Approach 1:
The coupling arms are designed with adjustable length capabilities through telescopic sections or interchangeable segments. This allows the steering geometry to be dynamically reconfigured for different operating conditions (e.g., long coupling arms for wide turns, short coupling arms for tight turns). The adjustment mechanisms use simple mechanical interfaces that can be manufactured using standard machining processes.
Solution Approach 2:
The adjustable coupling arms employ a nested structure where one arm segment is inserted within another, allowing length adjustment through telescopic extension or retraction. This nested design provides compact storage when not in use and allows for multiple length configurations without requiring completely separate components for each adjustment setting.
Data Source
AI summary
The parallel maneuvering system is a steering system for portable devices, portable platforms and the like, allowing individual wheels to be steered in a parallel and simultaneous manner. The parallel maneuvering system includes a first coupler and a second coupler, which are slidably mounted with respect to one another, and which each include a pair of arms for eccentric pivotal attachment to a corresponding pair of wheel assemblies. The first and second couplers are mounted within a hollow chassis, and the wheel assemblies are mounted to the hollow chassis such that respective wheels thereof are mounted external to the hollow chassis, and respective eccentric crank arms thereof are mounted within the hollow chassis. At least one linear actuator may be provided for selectively driving sliding movement of the first coupler with respect to the second coupler.