System and apparatus for providing supplemental securement of doors of bottom dump material transport containers

A system comprising:

• a material conveyance apparatus having an interior for receiving particulate material, the material conveyance apparatus comprising:
• a hopper structure defining the interior and having an upper fill opening and a lower dump opening, the hopper structure comprising:
• a perimeter wall assembly extending about a perimeter of the interior of the hopper structure and defining the lower dump opening, the perimeter wall assembly having a plurality of wall portions extending about the interior and including opposite end wall portions and opposite side wall portions longer than the end wall portions;
• and
• a pair of door assemblies movable with respect to the perimeter wall assembly, each door assembly of the pair of door assemblies being movable sideways with respect to the perimeter wall assembly and inwardly toward each other to a closed position and being movable sideways with respect to the perimeter wall assembly outwardly away from each other to an open position, the closed position being characterized by the pair of doors closing the lower dump opening against material movement through the lower dump opening;
• a door assembly movement structure configured to move the door assemblies out of the closed position using an actuator, the door assembly movement structure including an actuator operating assembly configured to operate the actuator using an operating fluid to move the at least one door assembly out of the closed position of the door assembly;
• and
• a door securing apparatus configured to selectively secure the pair of door assemblies of the hopper structure in the closed positions, the door securing apparatus comprising:
• a first structure mounted on one door assembly of the pair of door assemblies such that the first structure moves with the one door assembly and a second structure mounted on an other door assembly of the pair of door assemblies such that the second structure moves with the other door assembly and so that movement of the door assemblies to the closed positions moves the first and second structures together into engagement with each other, the first and second structures having a secured condition characterized by the first structure mounted on the one door assembly being engaged with the second structure mounted on the other door assembly such that the first and second structures secure the pair of door assemblies against movement out of the closed positions of the door assemblies;
• and
• an operating structure configured to operate the first and second structures between the secured and unsecured conditions, the operating structure being interfaced with the door assembly movement structure in a manner such that operation of the actuator operating assembly to move the pair of door assemblies of the hopper structure toward open positions of the door assemblies causes the operating structure to move the first and second structures out of the secured condition of the first and second structures.