Device for unloading a container for bulk materials

A device for unloading bulk material from a container wherein the floor of the container is made up at least in part of flaps which can be rotated outwards from the interior of the container, the improvement which comprises at least two flaps rotatably mounted on a support frame in the interior of the container, a rotatable shaft mounted under the support frame and operably secured to the flaps such that the rotation of the shaft can be transmitted to the flaps for tilting same, a lock connected to each of the flaps such that one end of each lock is operably connected to the rotatable shaft and the other end of each lock engages in a latching device when the flaps are in the closed position, wherein the latching device is made up of a supporting section mounted on a box section by means of hooks on the supporting section which engage in counterparts in said box section and are held in place by adjoining means, wherein the rotatable shaft is provided with a first pair of flanges and a second pair of opposed flanges on opposite sides of and transverse to the longitudinal axis B of said shaft, said first pair of flanges having an elbow lever rotatably fixed thereto at a point A and said second pair of flanges having a second lever rotatably fixed thereto at a point B wherein the elbow lever is hinged to one of said flaps and the second lever is hinged to the other of said flaps, wherein the distance between point A and longitudinal axis B of said shaft is smaller than the distance between point B and the longitudinal axis B of said shaft, wherein connected to each of the flaps is a said lock, each lock is connected at one end by a bolt to the respective elbow lever or second lever, and at the other end, in the closed position, engages in a said latching device, wherein each lock is situated in a housing which is secured to the flaps such that the lock is braced via rolls on one side against the roof of the housing and on the other side against the lower side of the housing, wherein each lock features a hole which accommodates means for energy storage, said means for energy storage has one end braced against a stop wall which rests on the lower side of the housing and another end braced against a strut, and wherein each lock is shaped in the form of a latch which projects towards the latching device wherein the supporting section features a roll on which the latch engages in the closed position.