To provide a grass mower capable of controlling vehicle velocity in an automatic travel mode with a simple structure, and releasing the automatic travel mode by quick determination.SOLUTION: A grass mower comprises: a drive wheel unit; a vehicle velocity operation tool 15 capable of adjusting vehicle velocity of a machine body; operation detection parts 74a, 74b capable of detecting an operation position of the vehicle velocity operation tool 15; a travel control part 63 for controlling rotation speed of travel motors 21, 22 on the basis of the operation position; a brake device which can perform brake action to the drive wheel unit 2; a storage part 51 capable of storing a drive state of the machine body; and a travel mode management part 50 which can switch a mode to an automatic travel mode in which the travel control part 63 controls the rotation speed of the travel motors 21, 22 on the basis of the stored drive state. The travel mode management part 50 switches the mode to a manual travel mode when the brake operation tool 14 is operated by an amount larger than a preset operation amount.SELECTED DRAWING: Figure 3

    【課題】簡素な構成で自動走行モードにおける車速の制御が可能であって、咄嗟の判断で自動走行モードを解除可能な草刈機の提供。【解決手段】駆動輪ユニットと、機体の車速を調整可能な車速操作具15と、車速操作具15の操作位置を検出可能な操作検出部74a,74bと、操作位置に基づいて走行モータ21,22の回転速度を制御する走行制御部63と、駆動輪ユニット2に対する制動作用が可能な制動装置と、機体の駆動状態を記憶可能な記憶部51と、記憶された駆動状態に基づいて走行制御部63が走行モータ21,22の回転速度を制御する自動走行モードに切換可能な走行モード管理部50と、が備えられ、自動走行モードの状態で、走行モード管理部50は、制動操作具14が予め設定された設定操作量よりも大きく操作されると、手動走行モードに切換える。【選択図】図3


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    Title :

    GRASS MOWER


    Additional title:

    草刈機


    Contributors:

    Publication date :

    2020-04-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    A01B SOIL WORKING IN AGRICULTURE OR FORESTRY , Bodenbearbeitung in Land- oder Forstwirtschaft / A01D Ernten , HARVESTING / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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