| 摘要 |
PURPOSE:To properly remove an adhered material remaining on the inner surface of buckets having various shapes through increasing of freedom of movement, by a method wherein the arm of a scraper is swung by a cam. CONSTITUTION:In order to remove an adhered material remaining on the inner surface of a bucket 4, which is not limited to a boat-shaped bucket but is formed in a semicylinder or other arbitrary shape, a raking device, consisting of a scraper 9 and a cam 8, is located below the bucket 4 right after turn-over. With the rotation of the cam 8, an arm 91 of the scraper 9 is swung around a fulcrum 92 through a cam support roller 93. This causes swinging of a raking plate 94 mounted to the one end of the arm 91, and enables raking down of substance, adhered to the inner surface of the bucket, by means of the raking plate 94 irrespective of the shape of the bucket 4 with the progress of the bucket 4. |
