Park and Load Interlock System

Abstract

The invention provides a parking and loading-unloading interlocking system. The system comprises a gas source, a first switching device, second switching devices, a parking system and a loading and unloading system. The parking system and the loading and unloading system are connected with the gas source through pipelines. The first switching device is arranged on the pipeline between the parking system and the gas source. The parking system comprises a braking gas chamber and a quick release valve. The quick release valve is arranged on a pipeline located between the braking gas chamber and the first switching device. The loading and unloading system comprises a main control switch used for controlling loading and unloading, a gas inlet of the main control switch is connected with the gas source through a pipeline, and a control port of the main control switch is connected with gas outlets of the second switching devices through pipelines. First gas inlets of the second switching devices are connected with the gas source through pipelines, and control ports of the second switching devices are connected with a pipeline located between the first switching device and the quick release valve through pipelines. Compared with the prior art, the parking and loading-unloading interlocking system has the advantages that the parking brake effect is quite good, and safety risks are low in the processes of loading, unloading and traveling.

Description

【Technical field】 [0001] The invention relates to the technical fields of parking, loading and unloading safety and driving safety of tank cars, in particular to an interlocking system for parking and loading and unloading of oil tank cars. 【Background technique】 [0002] Oil tank trucks are vehicles for transporting hazardous chemicals. When loading and unloading oil, they must remain parked, and extremely dangerous accidents such as vehicles driving away or slipping away must not occur. When driving, the oil loading and unloading control switch in the oil loading and unloading system must be returned to ensure oil safety. In the related art, the oil tanker has the following problems in the process of parking, loading, unloading and running: 1. When loading and unloading oil, there is no parking brake, which cannot ensure that the oil tanker is in a stationary state; 2. It is easy to leak when operating the oil loading and unloading control switch. Close the control switch...

AI Technical Summary

Problems solved by technology

In the related art, the oil tanker has the following problems in the process of parking, loading, unloading and running: 1. When loading and unloading oil, there is no parking brake, which cannot ensure that the oil tanker is in a stationary state; 2. It is easy to leak when operating the oil loading and unloading control switch. Close the control switch, especially if there is a risk of air leakage when an oil vapor recovery system is installed

Therefore, there are disadvantages in the related art, such as poor parking brake effect, high safety risks when loading and unloading oil, and driving. How to provide a parking and loading and unloading interlock system with low safety risks has become a common problem for those skilled in the art. problems faced

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