Elevator Wire Rope Handling Jig With Adjustable Drums
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Solution Overview
Problem
The installation and replacement of elevator wire ropes is cumbersome due to the need for careful unwinding, placement on pulleys, tension adjustment, and handling of heavy ropes, often requiring significant effort and risk of strand separation.
Innovation Solution
A handling jig with a central axis, cylindrical drum, and adjustable semicircular drums, allowing for safe and efficient winding and unwinding of wire ropes, adjustable diameter, and easy transport to upper floors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wire ropes are handled manually during installation and replacement, then installers can control the placement process, but the process becomes cumbersome and time-consuming with high risk of strand separation
Solution Approach 1:
The handling jig serves as an intermediary device between the wire rope and the installation environment. The jig's drum structure provides a controlled interface for winding and unwinding wire ropes, eliminating the need for manual handling while preventing strand separation through proper geometric constraints.
Solution Approach 2:
The jig allows wire ropes to be pre-wound onto drums in a controlled manner before installation. This preliminary winding action ensures proper coiling and prevents strand separation during subsequent handling and installation processes.
2Ease of operation
If wire ropes are transferred to upper floors for installation, then installation can proceed, but significant effort is required due to the weight of the ropes
Solution Approach 1:
The wire rope handling system divides the heavy rope into manageable sections wound on separate drums. The jig can be disassembled into portable components that can be easily transported to upper floors, and the rope itself is segmented into coils that are easier to handle than a single long heavy rope.
Solution Approach 2:
The jig structure provides mechanical support that counteracts the weight of the wire rope during handling and installation operations, reducing the effective load that installers must bear.
3Reliability
If wire ropes are wound tightly to prevent strand separation, then safety is improved, but the handling and placement process becomes more complex
Solution Approach 1:
The jig employs curved drum surfaces with specific radii (e.g., 150mm, 300mm, 600mm) that match the natural curvature requirements of wire rope coiling. This geometric approach ensures tight, secure winding that prevents strand separation while maintaining simple, intuitive handling through natural rope followage on curved surfaces.
4Adaptability or versatility
If the handling device is designed with fixed dimensions, then manufacturing is simplified, but the device cannot adapt to different wire rope lengths and diameters
Solution Approach 1:
The jig incorporates adjustable components including drums with variable diameters (150mm, 300mm, 600mm) and extendable arms that can be configured for different wire rope lengths and specifications. This dynamic adjustability allows a single device to handle multiple wire rope types while maintaining relatively simple manufacturing through modular design elements.
Data Source
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AI summary
Present invention refers to a device which allows elevator wire ropes to be handled either during a new installation or when replacing old and/or used ropes in an existing installation. The device serves the quick and safe installation of the new wire ropes, but also the effective removal of the old ones. The jig consists of a central axis (1a), a central cylindrical drum (2a), two semicircular drums (4a, 4b) secured by pins (5) to the central drum (2a), with the possibility of adjusting the radius of the circle formed by the semicircular drums (4a, 4b), with two bipeds (9) to the right and left of the drum to support the structure and a handle (10) on the central axis (1a) for winding and unwinding wire rope (8a).