Opening and closing operation device for loading and unloading valve at the bottom of railway tank car

Abstract

The invention discloses an opening and closing operating device for a loading and unloading valve on the bottom of a railway truck. The opening and closing operating device is arranged on the bottom of the railway truck and used to open or close the loading and unloading valve and comprises an opening and closing lever mechanism, a mounting mechanism arranged on an operating end of the opening and closing lever mechanism, a supporting mechanism arranged on a working end of the opening and closing lever mechanism and a locking mechanism used to lock or unlock the opening and closing lever mechanism; the opening and closing lever mechanism comprises a transmission lever, a handle arranged on and vertically and fixedly connected to an operating end of the transmission lever, a coupler sleeving a working end of the transmission lever and a guide pin arranged on the top of the transmission lever; and the coupler can move axially under an action of the handle to be connected to a loading and unloading valve opening and closing interface in the bottom of the railway truck. The opening and closing lever mechanism is locked or unlocked by the locking mechanism to prevent leakage of loaded goods caused by opening of the loading and unloading valve during accidents or accidental operation.

Description

technical field [0001] The invention relates to a railway tank car, in particular to an opening and closing operation device for loading and unloading valves at the bottom of a railway tank car. Background technique [0002] Currently, rail tank cars with bottom loading and unloading capabilities usually have manually operable loading and unloading valves. The opening and closing operation device of the general loading and unloading valve mainly connects the opening and closing interface of the loading and unloading valve through the operating lever to perform the opening and closing operation of the loading and unloading valve. With the heavy load and high speed of railway transportation, higher requirements are put forward for the safety of transporting flammable goods. [0003] However, after the existing opening and closing operation device completes the closing operation of the loading and unloading valve, the coupling of the opening and closing lever mechanism and the...

AI Technical Summary

Problems solved by technology

[0003] However, after the existing opening and closing operation device completes the closing operation of the loading and unloading valve, the coupling of the opening and closing lever mechanism and the opening and closing interface of the loading and unloading valve are still in a connected state. During the operation of the vehicle, due to vehicle vibration, derailment and other reasons, the opening and closing operation The device can easily lead to the accidental opening of the bottom loading and unloading valve, resulting in leakage of the cargo loaded on the vehicle and polluting the environment

Especially when the fire source exists, the leaked flammable goods will burn, and even cause the tank to explode, causing immeasurable loss of personnel and property

In addition, since the existing opening and closing operation device does not have a self-locking function, it is easy to cause irrelevant personnel to open the loading and unloading bottom valve by mistake when parking, and accidents of cargo leakage occur

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