To provide a rope elongation detection device for a winding drum type elevator that can simply and easily detect the elongation of a rope suspending a passenger car in the winding drum type elevator and detect the abnormality at an early stage.SOLUTION: There is provide a rope elongation detection device for a winding drum type elevator for detecting an elongation amount of a rope suspending a passenger car, comprising: a rotation angle detector that detects a rotation angle of a winding drum type hoisting machine; and a determination unit that determines whether or not the elongation amount of the rope is within an allowable range based on an angle difference between detection angles detected by the rotation angle detector before and after a lapse of time while the passenger car is stopped at a specified floor. A common threshold can be applied to the determination by the determination unit even if the specified floor is changed to a different floor. An alarm is issued when a determination result of the determination unit indicates that the elongation amount of the rope is not within the allowable range. The rotation angle detector detects the angle based on at least one of the output of an encoder for controlling the winding drum type hoisting machine and the output of a tilt sensor disposed exclusively.SELECTED DRAWING: Figure 3

    【課題】巻胴式エレベータにおいて、乗りかごを吊るロープの伸びを簡易かつ容易に検出し、その異常を早期発見できる巻胴式エレベータ用ロープ伸び検知装置を提供する。【解決手段】乗りかごを吊るロープの伸び量を検知するための巻胴式エレベータ用ロープ伸び検知装置であって、巻胴式巻上機の回転角度を検出する回転角度検出器と、乗りかごが規定階で停止中に、回転角度検出器で検出する検出角度を時間経過の前後で比較する角度差に基づいて、ロープの伸び量が許容範囲内であるか否かを判定する判定部と、を備える。規定階を異なる階に変更した場合でも、判定部の判定には、共通の閾値を適用できる。判定部の判定結果が、ロープの伸び量が許容範囲内でないと判定したとき発報する。回転角度検出器は、巻胴式巻上機の制御用エンコーダの出力と、専用に配設された傾きセンサの出力と、少なくとも何れかに基づいて角度検出する。【選択図】図3


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    Title :

    ROPE ELONGATION DETECTION DEVICE FOR WINDING DRUM TYPE ELEVATOR AND METHOD OF DETECTING ROPE ELONGATION


    Additional title:

    巻胴式エレベータ用ロープ伸び検知装置及びその方法


    Contributors:

    Publication date :

    2023-06-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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