Five-Element Lifting Column With Coupled Screw Drive Synchronization
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Solution Overview
Problem
Conventional lifting columns have limited lift capacity, require complex drive systems, and often necessitate additional components like cable pull systems or multiple motors, leading to increased installation complexity and cost.
Innovation Solution
A lifting column design featuring two screw drives with a coupling tube arrangement that synchronizes the movement of column elements, allowing for a single drive to extend or retract the column, eliminating the need for complex systems and additional components, and enabling a more robust and cost-effective structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single motor with worm gear and spindle nut is used, then the structure is simple, but the lift capacity is limited
Solution Approach 1:
The lifting column is divided into multiple column elements (at least five) that can be moved relative to each other by separate screw drives. The first screw drive moves three innermost column elements, while the second screw drive moves three outermost column elements, enabling extended lift capacity beyond what a single motor could achieve.
Solution Approach 2:
Multiple screw drives are combined and synchronized through a coupling tube arrangement to operate as an integrated system. The coupling tube mechanically connects the first and second screw drives, allowing them to work together to achieve greater lift capacity while maintaining coordinated movement of all column elements.
2Length of moving object
If telescopable threaded spindles or cable pull systems are used to expand lift, then the lift capacity increases, but the device complexity increases
Solution Approach 1:
The lifting column employs multiple column elements that can telescope relative to each other, with at least five column elements arranged in nested portions. This dynamic telescopic arrangement allows the column to extend to greater heights while maintaining a compact retracted state, achieving high lift capacity without proportionally increasing complexity.
3Length of moving object
If two separate screw drives with independent motors are used, then the lift capacity increases, but the synchronization and installation complexity increases
Solution Approach 1:
A coupling tube arrangement serves as a mechanical intermediary between the first and second screw drives. This coupling tube operatively connects the two screw drives, ensuring they move in synchronization without requiring complex electronic control systems or multiple independent motors, thereby reducing synchronization complexity.
4Length of moving object
If additional components like cable pull systems are added to increase lift, then the lift capacity increases, but the manufacturing cost and installation outlay increases
Solution Approach 1:
The screw drive mechanism serves multiple functions: it provides the lifting action, enables telescopic movement of column elements, and through the coupling tube arrangement, ensures synchronized operation of multiple drives. This multi-functionality eliminates the need for separate cable pull systems or additional specialized components, reducing both manufacturing cost and installation outlay.
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
This design achieves a higher lift capacity with reduced complexity and cost, providing a flexible and aesthetically pleasing solution for synchronizing the movement of column elements, while minimizing the number of components and installation space requirements.
Implementation Method 1
A screw drive in the sense of the invention is preferably an assembly for converting a rotational movement into a translational movement
Data Source
AI summary
A lifting column has five column elements that are arranged in a nested manner, at least in portions, as well as a first screw drive for the movement of the three innermost column elements relative to one another and a second screw drive for the movement of the three outermost column elements relative to one another. A coupling tube arrangement is provided which operatively connects the first screw drive with the second screw drive.