PROBLEM TO BE SOLVED: To improve workability in the attaching and detaching of implements in a traveling working machine which is equipped with a traveling machine body 2, a lifting up and down mechanism 12 at the traveling machine body and a lifting up and down member 13 lifted up and down by the lifting up and down mechanism, and which attachably/detachably links various implements (a seedling-transplanting device) 3 to the lifting up and down member through a rolling shaft 18 and a hitch member 19 in a freely rolling state.SOLUTION: A hitch device has the hitch member 19 mounted to the implements 3 through the rolling shaft so that the hitch member can roll, and an actuator 22 provided for controlling the rolling of the implements between the hitch member and the implements, while the hitch member is provided with a hitch shaft 27 having a right angle to the rolling shaft, and the lifting up and down member is provided with a hook body 28, and further the hook body being engaged with the hitch shaft is fastened with hitch bolts 29.COPYRIGHT: (C)2012,JPO&INPIT【課題】走行車体2と,この走行車体における昇降機構12と,この昇降機構によって昇降動する昇降部材13とを備え,前記昇降部材に,各種の作業機器(苗植え装置)3を,ローリング軸18及びヒッチ部材19を介してローリング自在な状態で着脱可能に連結して成る走行型作業機において,その着脱の作業性を向上する。【解決手段】前記ヒッチ部材19を前記作業機器3に前記ローリング軸を介してローリング可能に装着し,このヒッチ部材と前記作業機器との間に前記作業機器のローリング制御用アクチェータ22を設ける一方,前記ヒッチ部材には,前記ローリング軸と直角にしたヒッチ軸27を,前記昇降部材には,前記フック体28を各々設け,更に,前記昇降部材と前記ヒッチ部材とを,前記フック体を前記ヒッチ軸に係合した状態で,ヒッチボルト29にて着脱可能に締結する。【選択図】図3
