PROBLEM TO BE SOLVED: To provide a load measuring device for a work machine that can measure load on an end part of a boom.SOLUTION: The present invention relates to a load measuring device A provided in a work machine 100 having a boom 130, for measuring a load M on a boom end part 131. The load measuring device A includes: an acceleration sensor 1 in the boom 130; and a load calculating part 3, in which a detection waveform of the acceleration sensor 1 is input. The load calculating part 3 obtains a natural frequency f of the boom 130 from the waveform of the acceleration sensor 1, and obtains a load M from the natural frequency f. The load measuring device can measure the load M on the boom end part 131 based on the detection waveform of the acceleration sensor 1.SELECTED DRAWING: Figure 1
【課題】ブーム先端部にかかる荷重を測定できる作業機械の荷重測定装置を提供する。【解決手段】ブーム130を備える作業機械100に設けられ、ブーム先端部131にかかる荷重Mを測定するための荷重測定装置Aであって、ブーム130に設けられた加速度センサ1と、加速度センサ1の検出波形が入力される荷重算出部3とを備え、荷重算出部3は、加速度センサ1の検出波形からブーム130の固有振動数fを求め、固有振動数fから荷重Mを求める。速度センサ1の検出波形をもとに、ブーム先端部131にかかる荷重Mを測定できる。【選択図】図1
LOAD MEASURING DEVICE FOR WORK MACHINE
作業機械の荷重測定装置
13.04.2017
Patent
Elektronische Ressource
Japanisch