Elevator hoisting machine and additional sheave arrangement

By using an additional sheave device in the elevator traction machine, the segmented pieces are connected into a ring shape using connecting pins and fasteners, which solves the problem of sheave groove misalignment, achieves the stability and continuity of the sheave groove, and improves the reliability of elevator operation.

CN117228487BActive Publication Date: 2026-06-12MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Filing Date
2022-09-22
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

In traditional elevator traction machines, the two segments are integrated and installed on the outer circumference of the rope pulley by fasteners, which is prone to misalignment and makes it difficult to ensure good continuity of the rope groove.

Method used

An additional rope wheel device is adopted, including a circular additional rope wheel body and a fixing component. The segmented pieces are connected into a circular shape by a connecting pin, and fixed to the rope wheel by the fixing component and the connecting pin to ensure the alignment of the rope wheel groove.

Benefits of technology

It effectively suppresses the misalignment of the sheave grooves between adjacent segments, improves the continuity and stability of the sheave grooves, and ensures the reliability of elevator operation.

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Abstract

The present invention aims to provide an elevator hoisting machine and an additional sheave device capable of suppressing the shift of sheave grooves between adjacent split pieces. The additional sheave device (16) has a circular ring-shaped additional sheave body (21) and a plurality of fixing members (22). The additional sheave body (21) has a plurality of split pieces (23) and a plurality of link pins (24). The plurality of split pieces (23) are arranged in a circular ring shape along the outer periphery of the sheave (15). A plurality of sheave grooves (23a) are provided in each split piece (23). The plurality of link pins (24) link adjacent split pieces (23) respectively.
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Citation Information

Patent Citations

  • JP1977079457U

  • Elevator hoisting device for motor - sheave

    JP1984195248U