PROBLEM TO BE SOLVED: To prevent holes of a sliding means and a slide regulating means from accumulating mud and being clogged by the mud during puddling work, and thereby excessive machining accuracy and mounting accuracy of the means are avoided.SOLUTION: The invention relates to a sliding means and an operation regulating means of a folding type harrowing device comprising three parts which are a central working body and right and left side working bodies, in which the side working bodies are folded upward from both ends of the central working body. When the side working bodies are folded, the abutment on the central working body is released, and a locking rod 73 is in a state of being inserted into a regulation locking hole E of a locking regulating hole 78 provided in a second side link 51 formed of an insertable and removable through-hole, and regulates the second side link 51. When the side working bodies are deployed, a sliding rod abuts on a central working body abutting part to be slid, and the locking rod 73 is removed from the regulation locking hole E by sliding together with the sliding rod to release the regulation of the second side link 51. Sliding of the locking rod 73 is guided by a guide pin 77 installed between the sliding rod 71 and the locking rod 73.COPYRIGHT: (C)2014,JPO&INPIT【課題】代掻き作業中に、摺動手段、摺動規制手段の孔に代掻きの泥が溜り詰まることはなく、これら手段の過重な加工精度、取付精度を避ける。【解決手段】中央作業体と左右の側部作業体の3部分からなり、側部作業体を中央作業体の両端部から上方へ折り畳む折畳み式砕土装置の摺動手段、作動規制手段に係る。側部作業体折畳み時には、中央作業体との当接が解除し、係止ロッド73が挿脱可能な貫通孔からなる側部第2リンク51に設けた規制係止部78の規制係止孔E内に挿入状態となり側部第2リンク51を規制する。側部作業体展開時には、摺動ロッドが中央作業体当接部と当接して摺動され、摺動ロッドと共に係止ロッド73が摺動して規制係止孔Eから離脱し側部第2リンク51の規制を解除する。係止ロッド73の摺動は、摺動ロッド71と係止ロッド73との間に設置されるガイドピン77によりガイドする。【選択図】図3
