MACHINE FOR REMOVING SOIL AT CORNER OF SEEDLING-RAISING BOX IN SEEDING FACILITY

摘要

PROBLEM TO BE SOLVED: To perfectly remove banks left along the front and rear walls of a seedling-raising box to flatten the whole surface of soil in the box.;SOLUTION: A front press member (3) and a rear press member (4) whose lower surfaces are flat, respectively, are downward moved in a constant distance along the inside walls of the front and rear walls of a seedling-raising box, respectively. Therein, a banked soil invasion-stopping portion (3b) is formed at the front end portion of the lower surface-forming portion (3a) of the front press member (3), and when brought into contact with the rear wall of the carried seedling-raising box, the downward moved rear press member (4) is forward retreated and simultaneously returned. A guide control member (5) for arranging the posture of the carried seedling-raising box is preferably disposed on the side for taking the seedling- raising box, and cushion members for absorbing reaction forces on the pressing of the front press member (3) and the rear press member (4) may be intervened. The front press member (3) and the rear press member (4) are downward moved on the basis of the seedling-raising box detection of a detection sensor. Therein, the speed of the carried seedling-raising box is detected, and the downward movements of the front press member (3) and the rear press member (4) are then started in response to the carrying speed, and the position of the attached detection sensor can finely be adjusted toward the carrying passage (1).;COPYRIGHT: (C)2001,JPO