Novel freight train instrument holds case

The utility model discloses a novel freight train instrument holds case, the uncovered department of box is provided with the limiting plate of inside extension, be provided with the spout on the inside wall of box, the interlayer is provided with the pulley by 1~5 layer of component in the bottom of interlayer, and the interlayer mounts on the spout through the pulley activity, and interlayer from top to bottom length increases in proper order, locking mechanical system mainly comprises pedestal, main pivot, driven chain wheel and rack, the mounting hole has been seted up on the case lid, pedestal fixed mounting is provided with the support in the mounting hole department of case lid in the bottom of this pedestal, offers corresponding first through -hole and second through -hole on pedestal and support respectively, the utility model discloses the advantage is: it is very orderly to make the instrument put, and the instrument of taking becomes very convenient, and simple structure is equitable, low in manuf