Compartment and bottom door thereof

Abstract

The invention discloses a bottom door of a compartment. The bottom door comprises a telescopic cylinder and at least two door bodies, wherein each door body is provided with a transmission mechanism which comprises a rotating shaft and a transmission rod, and the rotating shafts are connected with the door bodies through the transmission rods so that the door bodies can be driven to rotate when the rotating shafts rotate; the rotating shafts are driven by the telescopic cylinder to rotate, and the at least two rotating shafts can be driven by the telescopic cylinder successively to rotate. The rotating shafts can be driven by the telescopic cylinder successively to rotate so that the door bodies corresponding to the rotating shafts can be sequentially opened according to a certain order. It is only needed that the telescopic cylinder always provides acting force needed by opening one door body. Compared with the prior art, the acting force needed when the bottom door is opened is small, the requirement for the acting force of the telescopic cylinder is lowered, implementation is easy, the size of the telescopic cylinder is reduced, space is saved, and the dead load is reduced. Besides, the impacting force generated in the opening process is also reduced, and the reliability of the whole bottom door is improved. The invention further discloses the compartment with the bottom door.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to a bottom door of a compartment. In addition, the invention also relates to a carriage. Background technique [0002] In railway freight transportation, carriages capable of automatic unloading are usually used. Bottom doors are provided at the bottom of the carriages. After the bottom doors are opened, the goods are unloaded under the action of their own gravity. [0003] Please refer to figure 1 and figure 2 , figure 1 It is a schematic diagram of the structure of the bottom door of a typical carriage, figure 2 for figure 1 Side view of the bottom door shown. [0004] The bottom door at the bottom of the compartment includes multiple groups of door bodies 1', the opening and closing of multiple groups of door bodies 1' are controlled by a driving mechanism, and the driving mechanism includes a cylinder 2', a main shaft 3' and a transmission rod 4', such as f...

AI Technical Summary

Problems solved by technology

[0008] When a single group of doors 1' is opened, the cylinder 2' is required to provide a large force. In the bottom door, multiple groups of doors 1' are opened at the same time, and the main shaft 3' must overcome the resistance moment of multiple groups of doors 1' at the same time, so it is necessary to Cylinder 2' provides a very large force, which is not easy to achieve, and often requires a large-diameter cylinder or multiple cylinders to provide force

In addition, due to the large force, the impact force when opening is also large, which makes the driving mechanism easily damaged and affects the reliability of the bottom door.

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