Wheeled Jack With Tilting Wheels And Lockable Articulation
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Solution Overview
Problem
Existing wheeled jacks face difficulties in engaging and lifting vehicles that are positioned close to obstacles like sidewalks or have misaligned or damaged wheels, as they require complex maneuvers and struggle with low-clearance vehicles without risking overturning.
Innovation Solution
A wheeled jack with an articulated parallelogram chassis and tilting wheels, equipped with a locking articulation mechanism and adjustable clamps that can grip wheels from the inner side, allowing for easy engagement and lifting of vehicles regardless of orientation or condition, with a stabilizer to prevent overturning and adapt to uneven surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional wheeled jacks are used to engage vehicles near obstacles, then the jack structure becomes complex and requires complex maneuvers, but the ability to engage vehicles close to sidewalks or walls is limited
Solution Approach 1:
The jack incorporates a transverse arm that can rotate about a vertical axis and be locked at different angles, allowing the clamp assembly to dynamically adjust its position and orientation to engage vehicle wheels regardless of the vehicle's orientation or proximity to obstacles. This dynamic positioning capability enables engagement of vehicles near sidewalks or walls without requiring complex maneuvers or increasing overall structural complexity
Solution Approach 2:
The jack is divided into functionally independent segments: the main chassis, the rotatable transverse arm, and the clamp assembly. This segmentation allows each component to perform its specific function independently - the transverse arm handles orientation adjustment while the clamps handle wheel gripping - thereby achieving versatility without proportionally increasing overall device complexity
2Productivity
If conventional jacks are used to lift low-clearance vehicles, then lifting capability is achieved, but the risk of overturning increases
Solution Approach 1:
The jack is equipped with a stabilizer assembly that acts as a counterweight mechanism to prevent overturning when lifting low-clearance vehicles. The stabilizer compensates for the toppling moment generated by the lifted load, thereby maintaining stability and reliability while preserving full lifting capability
3Ease of operation
If conventional clamps are used to grip wheels, then wheel engagement is achieved, but damage to misaligned or damaged wheels may occur
Solution Approach 1:
The clamp assembly incorporates adjustable elements that can modify their geometry and positioning parameters to adapt to misaligned or damaged wheels. The clamps can adjust their gripping position and angle to accommodate variations in wheel condition, enabling easy engagement while avoiding concentration of stress on damaged areas, thereby preventing further wheel damage
4Measurement precision
If the jack is designed for precise wheel alignment, then accurate wheel positioning is achieved, but the ability to handle misaligned wheels is reduced
Solution Approach 1:
The transverse arm's rotatable joint and lockable at multiple angles enable the clamp assembly to dynamically align itself with the wheel regardless of the wheel's initial misalignment. This dynamic adjustment capability allows the jack to first adapt to misaligned wheels and then achieve precise gripping position, thereby maintaining both adaptability and measurement precision
Data Source
AI summary
A wheeled jack, comprising a chassis shaped like an articulated parallelogram in which a lower horizontal side is provided, at its two front sides, with respective pairs of tilting wheels and the front end of the upper horizontal side is provided with an articulation for the centerline of a transverse arm for supporting clamps for gripping a pair of wheels of a vehicle, each one of the pairs of front tilting wheels being fitted at the ends of a rocker lever and able to swivel about vertical axes, the articulation of the transverse clamp-supporting arm being provided with an assembly for locking at different angles.