EXCAVATION CONTROL SYSTEM FOR HYDRAULIC EXCAVATOR

PROBLEM TO BE SOLVED: To provide an excavation control system for a hydraulic excavator, which can simply acquire desired design aspect data.SOLUTION: An excavation control system 200 includes a design surface data generation unit 284 which generates first design surface data Dindicating a first design surface S1 nearest to a bucket 8, and second to fifth design surface data D-Dindicating second to fifth design surfaces S2-S5 continuing into the first design surface S1, on the basis of design terrain data Dg and bucket position data Dp, and which generates shape data Df indicating shapes of the first to fifth design surfaces S1-S5, on the basis of the first to fifth design surface data D-D. 【課題】所望の設計面データを簡便に取得可能な油圧ショベルの掘削制御システムを提供する。【解決手段】掘削制御システム２００は、設計地形データＤｇとバケット位置データＤｐとに基づいて、バケット８に最も近い第１設計面Ｓ１を示す第１設計面データＤＳ１と、第１設計面Ｓ１に連なる第２乃至第５設計面Ｓ２〜Ｓ５を示す第２乃至第５設計面データＤＳ２〜ＤＳ５とを生成し、第１乃至第５設計面データＤＳ１〜ＤＳ５に基づいて、第１乃至第５設計面Ｓ１〜Ｓ５の形状を示す形状データＤｆを生成する設計面データ生成部２８４を備える。【選択図】図６