PROBLEM TO BE SOLVED: To solve a problem that in a working vehicle for pulling a ground implement, when a traveling machine is rotated during performance of fixed control of inclination, the ground implement is miscontrolled due to centrifugal force.SOLUTION: The working vehicle 1 includes the ground implement 24 fitted through a link mechanism to the rear part of the traveling machine 2, an inclination control actuator 32 for tilting the ground implement 24 right and left relative to the traveling machine 2, an inclination detection means 81 and an angular velocity detection means 82, which are mounted on the traveling machine 2. The working vehicle is constituted so that drive of the inclination control actuator 32 on the basis of the detection result of both the detection means 81 and 82 performs the fixed control of inclination of the ground implement 24. When the traveling machine 2 is rotated during performance of the fixed control of inclination, the inclination control actuator 32 is driven so that the ground implement 24 has a predefined set angle relative to the traveling machine 2 regardless of the detection results of both the detection means 81 and 82.COPYRIGHT: (C)2012,JPO&INPIT【課題】対地作業機を牽引する作業車両において、傾き一定制御の実行中に走行機体を旋回させると、遠心力のせいで対地作業機が誤制御されるという問題を解消する。【解決手段】本願発明の作業車両1は、走行機体2の後部にリンク機構を介して装着された対地作業機24と、該対地作業機24を前記走行機体2に対して左右に傾動させる傾斜制御アクチュエータ32と、前記走行機体2に設けられた傾斜検出手段81及び角速度検出手段82とを備える。前記両検出手段81,82の検出結果に基づく前記傾斜制御アクチュエータ32の駆動によって前記対地作業機24の傾き一定制御を実行するように構成する。前記傾き一定制御の実行中に前記走行機体2を旋回させた場合は、前記両検出手段81,82の検出結果に拘らず、前記対地作業機24が前記走行機体2に対して予め規定された設定角度となるように前記傾斜制御アクチュエータ32を駆動させる。【選択図】図8
