Extendable grain tank for use in combine harvester, has side walls connected with front, rear and roof walls and base surface by inseparable and articulated connections, where roof walls are raised or folded up in rigid manner

摘要

The tank has side walls (2) connected with a front wall (1), a rear wall (3), a base surface and roof walls by inseparable and articulated connections i.e. hinges, or foldable membranes and set in rigid trapezoidal shape. The roof walls are raised or folded up in rigid manner and are connected with wall surfaces by the membranes and joints. The roof walls form large volume in enclosed space. The membranes are made of flexible weatherproof material e.g. textile material. Side surfaces are connected with base side surfaces (5) by the hinges or joints and are outwardly and continuously displaced.