To provide an alarm device and an alarm method capable of detecting surrounding obstacles regardless of the presence/absence of a load and a position of a claw, and capable of warning.SOLUTION: An alarm device 10 comprises an upper sensor 11 and a lower sensor 12 for detecting a distance to a surrounding object of a forklift 1. The alarm device sets a warning target area A in a region including the front of the forklift 1 based on detection results of the upper sensor 11 and the lower sensor 12, and comprises a control part 14 for determining the presence or absence of an obstacle O in the warning target area A based on the detection results of the upper sensor 11 and the lower sensor 12. The alarm device comprises an alarm part 16 for alerting an operator of the forklift 1 when it is determined that there is the obstacle O in the warning target area A. Moreover, the warning target area A has a larger radius than a claw length Lf or a cargo depth Lc obtained based on the detection results of the upper sensor 11 and the lower sensor 12, whichever is longer.SELECTED DRAWING: Figure 3

    【課題】積荷の有無や爪の位置に関わらず周囲の障害物を検出して警報することができる警報装置及び警報方法を提供する。【解決手段】警報装置10は、フォークリフト1の周囲の物体までの距離を検出する上部センサ11及び下部センサ12を備えている。そして、上部センサ11及び下部センサ12の検出結果に基づいて、フォークリフト1の前方を含む領域に警報対象エリアAを設定し、上部センサ11及び下部センサ12の検出結果に基づいて警報対象エリアA内の障害物Oの有無を判定する制御部14を備えている。そして、警報対象エリアA内に障害物Oがあると判定された場合にフォークリフト1の操縦者に警報する警報部16を備えている。さらに、警報対象エリアAは、上部センサ11及び下部センサ12の検出結果に基づいて得られた爪長さLfもしくは積荷奥行Lcのうちいずれか長い方よりも大きい半径を有している。【選択図】図3


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    Title :

    ALARM DEVICE AND ALARM METHOD


    Additional title:

    警報装置及び警報方法


    Contributors:

    Publication date :

    2023-05-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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