PROBLEM TO BE SOLVED: To provide a swing angle measuring device of a rope trolley type crane and a swing angle measuring method which facilitates power supply, can be hardly affected by an impact occurring upon the loading, further makes a mechanical contact part unnecessary to improve durability and hardly receives constraint regarding an attachment portion.SOLUTION: Forces T, Tin the horizontal direction which operate a sheave shaft 25' of sheaves 18', 22' of the sea side of a trolley 7 and a sheave shaft 25 of sheaves 18, 22 of the land side are measured by force sensors 26', 26, a load W*g (W: mass, g: gravity acceleration) of a suspension load containing a grab bucket 8 is measured by a load meter 27 and, in a control device 28, a swing angle θ,θof the suspension load is calculated according to an equation: θ=tan(2*T/(W*g))θ=tan(2*T/(W*g)).
【課題】電源供給が容易で且つ荷役の際に発生する衝撃の影響を受けにくくすることができ、更に機械的な接触部を不要として耐久性を高めると共に、取付箇所に関する制約を受けにくくし得るロープトロリ式クレーンの振れ角度測定装置及び振れ角度測定方法を提供する。【解決手段】トロリ7の海側のシーブ18?,22?のシーブ軸25?と陸側のシーブ18,22のシーブ軸25とに作用する水平方向の力T1,T2を力センサ26?,26で測定し、グラブバケット8を含む吊荷の荷重W・g(W:質量、g:重力加速度)を荷重計27で測定し、制御装置28において、吊荷の振れ角度θ1,θ2をθ1=tan−1(2・T1/(W・g))θ2=tan−1(2・T2/(W・g))より算出する。【選択図】図1
SWING ANGLE MEASURING DEVICE OF ROPE TROLLEY TYPE CRANE AND SWING ANGLE MEASURING METHOD
ロープトロリ式クレーンの振れ角度測定装置及び振れ角度測定方法
2015-09-24
Patent
Electronic Resource
Japanese
IPC: | B66C Krane , CRANES |
SWING ANGLE MEASURING DEVICE OF ROPE TROLLEY TYPE CRANE AND SWING ANGLE MEASURING METHOD
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