PROBLEM TO BE SOLVED: To provide a technology for improving work efficiency in treatment of wood.SOLUTION: The present invention provides a grapple system comprising: a working apparatus including a movable arm and a grapple performing a prescribed operation which is attached to a distal end of the arm a sensor for detecting an operation state of the working device including the arm and the grapple and a processing result-obtaining unit for calculating the throughput of timber per predetermined time based on the detection result of the sensor and obtaining an operation history of the working apparatus including the arm and the grapple.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】木材を処理する際の作業効率を向上させる技術を提供する。【解決手段】可動されるアーム、及び前記アーム先端に取付けられ、木材を把持して所定の動作を行うグラップルを含む作業装置と、前記アーム及び前記グラップルを含む前記作業装置の動作状態を検出するセンサと、前記センサの検出結果に基づいて、所定時間あたりの木材の処理量を算出すると共に、前記アーム及び前記グラップルを含む前記作業装置の動作履歴を求める処理結果取得部とを備える。【選択図】図2