Adjustable Elevator Shaft Docking Mechanism for Floor Height Variations

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Solution Overview

Problem

Existing elevator systems face challenges in accurately and efficiently adjusting to varying floor heights during installation, requiring complex and costly adjustments that can compromise the structural integrity and precision of the modular elevator shafts.

Innovation Solution

A docking mechanism comprising adjustable elements such as racks and gears, or indexing blocks and mechanical jacks, allows for precise alignment and adjustment of elevator shaft modules, enabling millimeter-level accuracy in adapting to floor height errors while maintaining reliable and cost-effective connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional fixed docking methods are used for modular elevator shafts, then structural integrity is maintained, but adaptability to varying floor heights is lost

Engineering Contradiction:
Improveadaptability to floor height variationsVSAvoidstructural integrity of shaft connection
Core Design Contradiction:
Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The docking mechanism incorporates adjustable elements including a rack and gear system that enable dynamic positioning. The gear can rotate to different angles, and the rack can move linearly along guide rails, allowing the connection between shaft modules to be adjusted for different floor heights while maintaining structural integrity through locked positions.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The docking mechanism allows change of geometric parameters (position and orientation) of the connecting elements. By adjusting the gear rotation angle and rack position, the docking mechanism can accommodate variations in floor height while maintaining reliable connection through the locking system.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If complex adjustment mechanisms are introduced to handle floor height errors, then adaptability improves, but device complexity increases

Engineering Contradiction:
Improveadjustment capability for floor height errorsVSAvoidcomplexity of docking mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The adjustment function is divided into two independent segments: angular adjustment through gear rotation and linear position adjustment through rack movement along guide rails. This segmentation allows each element to perform a specific adjustment function, simplifying the overall mechanism while maintaining comprehensive adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The mechanism uses simple dynamic elements (rotatable gear, movable rack on guide rails) rather than complex adjustment systems. The guide rails constrain the rack movement to specific paths, providing automatic alignment and reducing the need for additional complex positioning mechanisms.

Inventive Principle:
Principle #15Dynamics

3Manufacturing precision

If adjustable elements are added to the docking mechanism, then manufacturing precision requirements are reduced, but device complexity increases

Engineering Contradiction:
Improvetolerance for floor height variationsVSAvoidcomplexity of adjusting elements
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The rack acts as an intermediary element between the gear and the shaft module connection. The gear rotation drives the rack along constrained paths defined by guide rails, which in turn adjusts the connection position. This intermediary mechanism translates small angular adjustments into precise linear position changes, reducing the need for high manufacturing precision in the main structural components.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The guide rails provide constrained dynamic movement paths for the rack, automatically guiding it to the correct position during adjustment. This dynamic guidance system reduces the need for pre-manufactured precision alignment features in the shaft modules themselves.

Inventive Principle:
Principle #15Dynamics

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 docking mechanism facilitates accurate and reliable alignment of elevator shaft modules, ensuring precise fitment and structural integrity, while allowing for easy adjustment and re-adjustment to address dimensional errors, thus improving the efficiency and reliability of elevator system installation and operation.

Implementation Method 1

the first adjusting element is a rack fixed to the first docking element, and the second adjusting element is a gear

Methodology Applied
Scientific EffectGear mechanism: Gear

Implementation Method 2

the first adjusting element is a rack fixed to the first docking element, and the second adjusting element is a gear

Methodology Applied
Scientific EffectRack and pinion: Rack and Pinion

Implementation Method 3

the gear is disposed within one end of the second hollow tube by an adjustable spindle

Methodology Applied
Scientific EffectRotational adjustment:

Implementation Method 4

the connecting hole being adapted to be secured with the slot by a screw

Methodology Applied
Scientific EffectScrew connection: Screw

Data Source

PatentUS12139371B2Connecting mechanism, elevator shaft module and elevator system
Publication Date: 2024.11.12 OTIS ELEVATOR CO
  • US12139371B2 patent drawing
  • US12139371B2 patent drawing
  • US12139371B2 patent drawing

AI summary

A docking mechanism, an elevator shaft module, and an elevator system. The elevator shaft module and elevator system includes the docking mechanism. The docking mechanism includes a first docking element having a first adjusting element; and a second docking element having a second adjusting element, the first docking element is adapted to dock the second docking element in an adjustable manner, and the first adjusting element is adapted to engage the second docking element, such that a docking position between the first docking element and the second docking element is changeable by adjusting one of the first adjusting element and the second adjusting element.