PROBLEM TO BE SOLVED: To provide a reaping blade device for lightening a grass-dividing load of a stationary cutting blade disposed at the transverse center of the reaping blade device thereby to enhance the durability.SOLUTION: Right and left movable blades (5) having a number of movable blade elements (4) are placed reciprocally slidably in rightward and leftward opposite directions on the upper face side of a stationary cutting blade (3) having a number of stationary blade elements (1). A central stationary blade (2), which is formed in an approximately trapezoidal shape in a plane view to have right and left edges (2a and 2b) inclined with respect to the sliding direction of the movable blades (5) and a front edge portion positioned at the front end portions of the right and left edges (2a and 2b) and extending in the sliding direction of the movable blades (5), is arranged in the transversely central portion of the stationary blade (3). A guide plate (10) having a front end protruded forward of the central stationary blade (2) so as to separate and guide roots of grain culm transversely is arranged on the lower side of the central stationary blade (2), and the front end portion of the guide plate (10) is arranged on the upper side than the lower end of the central stationary blade (2).COPYRIGHT: (C)2014,JPO&INPIT【課題】刈刃装置の左右中央部に備えた固定刈刃の分草負荷を軽減し、耐久性を高める。【解決手段】多数の固定刃単体(1)を有する固定刈刃(3)の上面側に、多数の可動刃単体(4)を有する左右の可動刈刃(5)を左右相反する方向へ往復摺動自在に載置し、固定刈刃(3)の左右方向中央部に、可動刈刃(5)の摺動方向に対して傾斜する左右の鋸刃部(2a,2a)と、この左右の鋸刃部(2a,2a)の前端部に位置して可動刈刃(5)の摺動方向に沿う前縁部とを有して平面視略台形上に形成された中央固定刈刃(2)を配置し、中央固定刈刃(2)の下側には、中央固定刈刃(2)よりも前側に突出した前端部が穀稈の株元を左右に分草しながら鋸刃部(2a,2a)に導くガイドプレート(10)を配置し、ガイドプレート(10)の前端部を、中央固定刈刃(2)の下端部よりも上側に配置する。【選択図】 図2
