Linear Lifting Pillar Sliding Element for Bending and Torsion
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Solution Overview
Problem
Conventional lifting pillars face challenges in withstanding bending and torsional forces while maintaining a small gap between tubes, and often require complex and labor-intensive mounting processes due to the use of multiple plain bearings and guiding systems.
Innovation Solution
A lifting pillar design featuring a sliding element that is in direct contact with both tubes and movable in the axial direction, with optional abutments to prevent disengagement, and stationary gliding structures to support bending forces, allowing for reduced gap size and simplified mounting by minimizing the number of fixed components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple plain bearings are used as guiding and sliding system, then stability against bending and torsion is improved, but the gap between tubes becomes large and mounting effort increases
Solution Approach 1:
The patent combines multiple plain bearings into a single integrated sliding element that contacts both tubes simultaneously. This merging reduces the number of separate components from multiple plain bearings to one unified element, thereby reducing the gap between tubes and simplifying the mounting process while maintaining stability against bending and torsion forces
Solution Approach 2:
The sliding element serves multiple functions: it acts as a plain bearing for axial movement, provides guidance between tubes, and maintains stability against bending and torsion. This multi-functional design eliminates the need for separate guiding systems and multiple plain bearings, reducing overall device complexity
2Reliability
If plain bearings are fixed to tubes with screws and washers, then stable mounting is achieved, but mounting and adjustment effort increases
Solution Approach 1:
The sliding element is designed to be freely movable and is not fixed to any tube through screws or washers. The element self-positions between the tubes through its own geometry and contact surfaces, eliminating the need for additional fastening components and reducing mounting effort while maintaining stable operation
Solution Approach 2:
The patent removes the screws, washers, and adjustment mechanisms from the mounting system. The sliding element is extracted from the category of fixed components and becomes a freely movable component that maintains stability through its design rather than through fastening elements
3Force
If three or more plain bearings are provided per tube, then load distribution is improved, but the number of components and mounting complexity increases
Solution Approach 1:
The patent merges multiple plain bearings into a single sliding element that contacts both tubes. This one element replaces what would traditionally require three or more separate plain bearings per tube, reducing the quantity of components while maintaining load distribution capability through the element's design and contact surfaces
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 effectively absorbs bending and torsional forces while maintaining a small gap between tubes and reduces the effort required for mounting, providing a stable and efficient lifting mechanism.
Implementation Method 1
whereby the sliding element is in direct contact with both tubes and is arranged to be movable in axial direction in relation to both tubes
Implementation Method 2
The sliding element is in direct contact with both tubes and is arranged to be movable in axial direction in relation to both tubes
Implementation Method 3
the sliding element is in direct contact with both tubes and is arranged to be movable in axial direction in relation to both tubes
Data Source
AI summary
Embodiments relate to a lifting pillar having at least a first tube and at least a second tube that is axially movably arranged within the first tube. Further, the lifting pillar provides at least one sliding element arranged between the first tube and the second tube. The sliding element is in direct contact with the first tube and the second tuber and is axially movably arranged in relation to the first tube and the second tube.