Lifting Column Damping Unit for Drive Protection

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Solution Overview

Problem

Lifting columns with existing designs face limited service life due to vibrations and shock loads that can cause drive failure, leading to premature degradation.

Innovation Solution

Incorporation of a deformable damping unit, which can include elastomers, rubber, oil dampers, coil springs, or plate springs, positioned between carrier elements and drive components to absorb forces and reduce vibrations, thereby extending the operational life of the lifting column.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a lifting column operates without a damping unit, then the structure remains simple, but vibrations and shock loads cause drive failure and limit service life

Engineering Contradiction:
Improveservice lifeVSAvoidstructure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A damping unit is introduced as an intermediary component between the carrier element and the drive mechanism. This damping unit absorbs vibrations and shock loads, protecting the drive from harmful forces while extending the service life of the lifting column.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The damping unit is pre-installed in the lifting column structure to provide cushioning against future vibrations and shock loads. This preventive measure ensures that the drive system is protected before harmful forces can cause damage, thereby extending operational reliability.

Inventive Principle:
Principle #11Beforehand cushioning (Prior cushioning)

2Duration of action of stationary object

If a damping unit is added to absorb vibrations and shock loads, then service life is extended, but the device complexity increases

Engineering Contradiction:
Improveoperational lifeVSAvoidstructural complexity
Core Design Contradiction:
Duration of action of stationary objectVSDevice complexity

Solution Approach 1:

The damping unit serves as a mediator between the structural components and the drive system, absorbing harmful vibrations and shock loads while allowing the drive to operate smoothly, thus extending operational life without requiring complete system redesign.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The damping unit changes the dynamic parameters of the lifting column system by introducing energy dissipation mechanisms. This modifies the vibration characteristics and shock response, allowing the system to withstand operational stresses longer while maintaining manageable complexity through standardized damping components.

Inventive Principle:
Principle #35Parameter changes

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 damping unit effectively mitigates vibrations and shock loads, preventing drive failure and extending the service life of the lifting column by transmitting forces to the drive system, ensuring prolonged operational reliability.

Implementation Method 1

at least one damping unit that is deformable by a force that acts on a top side of the lifting column in at least one operating state

Methodology Applied
Scientific EffectDamping: Damping

Implementation Method 2

the damping unit includes at least one elastomer and/or rubber and/or at least one oil damper and/or at least one coil spring and/or at least one plate spring and/or at least one gas spring

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS10611617B2Lifting column
Publication Date: 2020.04.07 EWELLIX AB
  • US10611617B2 patent drawing
  • US10611617B2 patent drawing

AI summary

A lifting column includes a first column element and at least one second column element, the at least one second column element being movable relative to the first column element, and at least one damping unit. The damping unit is deformable by a force that acts on an upper side of the lifting column in at least one operating configuration of the lifting column such that the force is at least partly transmitted through the damping unit to a drive of the lifting column.