Running Rail Lift With Nested Thrust Columns for Low-Profile Access
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Solution Overview
Problem
Existing rail lifts face challenges in reducing visible mechanics below the rail and achieving flexible adjustment in lifting height, while maintaining accessibility and stability during operation.
Innovation Solution
A rail lift design featuring thrust columns with multiple thrust members arranged vertically, where adjacent members are connected eccentrically to allow for pivoting and support each other, enabling flexible height adjustment and secure alignment, with a support structure that includes a guide and deflection device for compact installation and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional lifting devices with visible mechanics are used, then the lifting function is achieved, but the visible mechanics below the rail increase and accessibility is reduced
Solution Approach 1:
The thrust members are nested within each other in a telescopic arrangement, with each thrust member receiving the next thrust member. This nesting allows the lifting mechanism to be compact and minimizes visible mechanics when the rail is in the lowered position, while still providing the full lifting stroke when extended.
Solution Approach 2:
The lifting device is segmented into multiple individual thrust members (first, second, third, fourth thrust members) that can be independently arranged and configured. This segmentation allows for flexible adjustment of lifting height by selecting different combinations and numbers of thrust members, while each segment maintains structural integrity.
2Adaptability or versatility
If fixed lifting height is used, then structural simplicity is maintained, but flexible adjustment in lifting height cannot be achieved
Solution Approach 1:
The lifting device transitions from a fixed configuration to a dynamic, adjustable configuration by allowing selective arrangement of thrust members. The number, position, and orientation of thrust members can be changed to achieve different lifting heights, making the system adaptable to various vehicle types and maintenance requirements.
Solution Approach 2:
The same set of thrust members can be configured for multiple lifting height requirements and different application scenarios. The modular design allows the lifting device to serve universal purposes across various vehicle maintenance tasks by simply reconfiguring the thrust member arrangement.
3Stability of the object's composition
If thrust members are rigidly connected, then structural stability is improved, but the ability to pivot and adjust alignment is lost
Solution Approach 1:
The connection between thrust members employs asymmetric characteristics: rigid in the vertical load-bearing direction to ensure stability, but allowing controlled pivoting in horizontal directions for alignment adjustment. This asymmetric connection behavior achieves both stability and adaptability.
Solution Approach 2:
The connection parameters between thrust members are designed to be variable - maintaining fixed distance and orientation under normal loading conditions for stability, but allowing temporary parameter changes (pivoting) during alignment and setup phases. This dynamic parameter control resolves the contradiction between rigidity and flexibility.
Data Source
Figure 1
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Figure 4a
AI summary
Disclosed is a tracked lifting platform for vehicles (14), comprising at least two tracks (16); a lifting mechanism (18) for raising and lowering the track (16) between a basic position (19) and an operational position (12) acts at least on each end region of each track (16), said lifting mechanism (18) being equipped with a pushing column (21) that includes a plurality of pushing elements (23) which can be placed on top of each other in such a way as to be resistant to pressure in the vertical direction.