PROBLEM TO BE SOLVED: To smoothly transport cut grass in mulching work.SOLUTION: A mower deck 200 includes: a cut-grass transporting cylinder opening 180 to which a cut-grass transport cylinder 18 is removably attached a first guide 220 provided along the rotation locus of a blade a pair of right and left first transport passages 230L and 230R provided along the first guide for transporting cut grass a second transport passage 240 for transporting joined cut grass toward the cut-grass transporting cylinder opening and a switching mechanism 300 for switching to either of transporting the cut grass to the cut-grass transport cylinder side by communicating the second transport passage with the cut-grass transporting cylinder opening, or closing the communication and circulating the cut grass to the first transport passages. The switching mechanism includes: 1) a closing member body 310 and a closing member tip part 320 which close the communication between the second transport passage and the cut-grass transporting cylinder opening and 2) a guide member 330 for distributing the cut grass being transported from the second transport passage to right and left directions to guide the distributed cut grass to the pair of right and left first transport passages when the communication is closed.COPYRIGHT: (C)2014,JPO&INPIT【課題】マルチング作業時に刈草を円滑に搬送する。【解決手段】モーアデッキ200は、刈草搬送筒18が着脱可能な刈草搬送筒用開口部180と、ブレードの回転軌跡に沿って設けられた第1ガイド220と、刈草が搬送される第1ガイドに沿って設けられた左右一対の第1搬送経路230L、230Rと、合流する刈草が刈草搬送筒用開口部に向けて搬送される第2搬送経路240と、第2搬送経路と刈草搬送筒用開口部とを連通し刈草搬送筒側へ刈草を搬送するか、又はその連通を閉鎖すると共に第1搬送経路へ刈草を周回させるかの何れかに切り換えるための切り換え機構300と、を有し、切り換え機構は、1)第2搬送経路と刈草搬送筒用開口部との連通を閉鎖する閉鎖部材本体310及び閉鎖部材先端部320と、2)連通が閉鎖された際、第2搬送経路から搬送されてくる刈草を左右方向に振り分けて左右一対の第1搬送経路へ案内する案内部材330とを有する。【選択図】図4
