PROBLEM TO BE SOLVED: To discard a recovery such as mowed lawn generated from an implement such as a lawn mower, and housed in a housing vessel, in excellent energy efficiency and in excellent work efficiency without imposing a heavy load on an operator.SOLUTION: A self-travelable recovery-housing auxiliary machine 70 including a recovery housing part is provided separably on a self-travelable working main machine 20 having a work part such as a cutting blade device 40, and the recovery-housing auxiliary machine 70 separated from the working main machine 20 can be traveled independently to a recovery conveyance destination. A lift device 130 for lifting the recovery-housing auxiliary machine 70 in the connected state to the working main machine 20 so that a front wheel 74 and a rear wheel 76 are separated from the ground, is provided on the working main machine 20.SELECTED DRAWING: Figure 1【課題】芝刈機等の作業機で発生して収容器に収容された刈芝等の回収物の廃棄を、作業者に大きい負担をかけることなく、しかもエネルギー効率よく及び作業効率よく行えるようにすること。【解決手段】刈刃装置４０等の作業部を有する自走可能な作業用本機２０に、回収物収容部を具備した自走可能な回収物収容用補機７０を切り離し可能に設け、作業用本機２０から切り離された回収物収容用補機７０が単独で回収物搬送先へ走行できるようする。作業用本機２０に、当該作業用本機２０に連結された状態の回収物収容用補機７０を、前輪７４及び後輪７６が地面から離れるべく持ち上げるリフト装置１３０を設ける。【選択図】図１
