Elevator Car Continuous Winch Roof Integration
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Solution Overview
Problem
Existing elevator systems face issues with complex and expensive conveyor device installations, complicated maintenance, and safety concerns due to non-uniform load absorption and introduction of forces.
Innovation Solution
The elevator car features a continuous winch conveyor device that forms the car roof, transmitting driving force via positive-locking traction means to a rope traction sheave, allowing the elevator to move on a fixed rope with friction, and includes retaining plates for load-bearing and force introduction, enabling simple installation and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional conveying device is installed in the elevator cabin, then the elevator can be moved vertically, but the installation becomes complex and costly
Solution Approach 1:
The conveying device is merged with the cabin structure itself. The continuous winch is installed in the recess of the rear wall, and the conveying device forms the cabin roof, integrating multiple functions into a unified structure that eliminates separate installation components
Solution Approach 2:
The cabin structure serves multiple functions: the rear wall recess houses the continuous winch, the conveying device forms the cabin roof, and the retaining plates provide both structural support and mounting surfaces. This multi-functionality reduces the number of separate components needed
2Reliability
If a conventional conveying device is used, then the elevator can transport persons and goods, but maintenance becomes complicated and time-consuming
Solution Approach 1:
The conveying device is segmented into modular components (continuous winch, rope drive sheave, retaining plates) that are integrated into the cabin structure. This segmentation allows individual components to be accessed and maintained independently while maintaining the overall structural integrity
Solution Approach 2:
The design allows maintenance personnel to access and service the conveying device components directly through the integrated structure without requiring complete disassembly. The retaining plates and recess design enable self-contained maintenance operations
3Reliability
If a conventional conveying system is installed, then the elevator can be raised and lowered, but the load transfer becomes non-uniform and unreliable
Solution Approach 1:
The retaining plates are strategically positioned at specific locations on the cabin structure to distribute loads uniformly. The continuous winch is placed in the rear wall recess to optimize force introduction points, ensuring even load distribution across the cabin structure during vertical movement
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 ensures functionally reliable and targeted load management, simplifies installation and maintenance, enhances safety, and allows for cost-effective implementation while maintaining operational efficiency.
Implementation Method 1
the elevator car can travel upwards or downwards on the fixed rope due to friction between the rope and a drive sheave of the conveying device or continuous winch
Data Source
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AI summary
Elevator car (1) for transporting persons and goods, comprising a car floor, car walls (2) adjoining the car floor, and a conveying device for raising and lowering the elevator car (1). The conveying device is designed as a continuous winch (3) or as a continuous rope winch. The conveying device forms the car roof of the elevator car (1).