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. Further, a lifting device 84 for lifting a rear wheel 76 to an auxiliary machine frame 72 is provided on the recovery-housing auxiliary machine 70.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。更に、回収物収容用補機７０に、補機フレーム７２に対して後輪７６を昇降させる昇降装置８４を設ける。【選択図】図１
