PROBLEM TO BE SOLVED: To improve the operability of a differential lock lever during turning.SOLUTION: This walking type plant husbandry machine 10 includes a working shaft 41 for transmitting a drive force from a transmission case 20 to a work device, axles 22L, 22R which are pivotally supported on the transmission case and which transmit the drive force to traveling wheels 30L, 30R, respectively, a differential device 60 for differentially rotating the axles, and a steering handle 51 which is provided to extend to the rear upper part of the transmission case and at the rear end of which a holding part 51a grasped by a worker is formed. The walking type plant husbandry machine further includes a differential lock lever 57 provided at a position which is located under the holding part and to which the worker can easily make an access so as to be rotated to the upper and lower sides with respect to the steering handle and a differential lock device 70 for restraining the differential motion of the differential device in conjunction with the operation of the differential lock lever. When the differential lock lever is set to the lock operation position, the differential lock device is brought into the state of "operation", and when the differential lock lever is set to the unlock position, the differential lock device is brought into the state of "unlock".COPYRIGHT: (C)2011,JPO&INPIT【課題】旋回時におけるデフロックレバーの操作性を向上する。【解決手段】ミッションケース20からの駆動力を作業装置に伝達する作業軸41と、ミッションケースに軸支されるとともに走行車輪30L・30Rに駆動力を伝達する車軸22L・22Rと、車軸を差動するデフ装置60と、ミッションケースの後上方に延設されてその後端部に作業者が握る把持部51aが形成される操向ハンドル51と、を具備する歩行型管理機10において、把持部の下方であって作業者から容易に手が届く位置に操向ハンドルに対して上下方向に回動可能に設けられるデフロックレバー57と、デフロックレバーの操作に連動してデフ装置の差動を規制するデフロック装置70と、を備え、デフロックレバーをロック作動位置に設定した場合にはデフロック装置が「作動」の状態となり、デフロックレバーをロック解除位置にした場合にはデフロック装置が「解除」の状態となる構成とした。【選択図】図4
