Side door opening-closing system of hopper car

Abstract

The invention discloses a side door opening-closing system of a hopper car. The hopper car is of a side door opening-closing structure; each set of side doors is oppositely provided with a corresponding set of side door opening-closing mechanism along the longitudinal direction of the hopper car; each set of the side door opening-closing mechanisms comprises a worm transmission mechanism and crankand connecting rod mechanisms; each of the worm transmission mechanisms comprises a rotating hand wheel, and a conversion gear set, a transmission rod, a helical gear set, worm gear assemblies and worm gear shafts which are driven by the rotating hand wheel for sequential transmission; the crank and connecting rod mechanisms are two-coupling crank and connecting rod mechanisms with motion dead centers; and each set of the side door opening-closing mechanisms is provided with a corresponding two-stage stop device. The side door opening-closing system of the hopper car utilizes the worm transmission mechanisms with a relatively-large transmission ratio and performs unloading by gravity; two side doors at one end are opened at one time, and the unloading efficiency is high; the stop devicescan realize the stop by stepping on pedal levers while operating the hand wheels; the opening-closing mechanisms realize the self-locking function of the system by virtue of the self-locking characteristic of worm gears and worms with the motion dead centers and the stop devices; and the two-stage stop devices further improve the locking performance and prevent the failure of locking.

Description

Technical field [0001] The invention belongs to the technical field of railway transportation vehicle design, in particular to the technical field of hopper car design in railway transportation vehicles, and particularly relates to a hopper car side door opening and closing system. Background technique [0002] The requirements of high-speed, fast and automatic railway transportation put forward higher requirements on the performance of vehicles, and automatic unloading trucks are usually realized by the hopper car structure. Existing hopper vehicles set the bottom surface of the vehicle body as a slope to form a bottom hopper structure to complete unloading. Generally, the hopper structure usually adopts a middle hopper structure, that is, the center of the hopper discharge port is located in the middle of the bottom surface of the vehicle body, and a bottom door opening and closing mechanism is provided on the corresponding bottom surface. The above-mentioned hopper structure m...

AI Technical Summary

Problems solved by technology

The above-mentioned funnel structure mostly takes the unloading pit in the center of the railway as the unloading place, and there is a defect that the goods cannot be quickly unloaded; due to the multi-funnel structure, the opening and closing mechanism is complicated, and the limited space of the car body cannot be used to the maximum to meet the problem of larger capacity

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