| 摘要 |
An attachment assembly for securing an excavation tooth in a row of closely spaced teeth on large earth excavating equipment. The assembly includes a nose piece, an excavation tooth and a securement pin. The nose piece has a base portion which is secured in a conventional manner to the shovel or dipper bucket of the excavation equipment, and a tapered extension for carrying the tooth. The tapered extension of the nose piece defines a recessed flat horizontal surface at the extended end thereof inwardly spaced from the lateral sides of the nose piece to define a horizontal stabilizing surface bordered by a vertical stabilizing wall. The tooth has a channel therein corresponding in configuration to the tapered extension of the nose piece so that the nose piece can fit thereover in a mating relationship. The securement pin which is comprised of two elongate members joined by a hard, resilient rubber center, extends vertically through the tapered extension of the nose piece and the excavation tooth to secure the tooth on the nose pin. The mating relationship of the channel walls in the tooth with the vertical stabilizing wall and recessed horizontal stabilizing surface on the nose piece provides both lateral and vertical stability for the tooth without the need for additional horizontal locking pins. |
