Safety system of airport shuttle bus

Abstract

The invention provides a safety system of an airport shuttle bus. The safety system comprises an inflating and deflating mechanism and a control mechanism. The inflating and deflating mechanism comprises a first air storage barrel, a hand brake valve, a first electromagnetic valve, a quick release valve, a brake air chamber and a deflation valve. The control mechanism comprises a signal sensor and a controller. When the airport shuttle bus is in a running state and a bus door is in a closed state, the hand brake valve, the first electromagnetic valve and the quick release valve are all in a normally-open state, the deflation valve is in a normally-closed state, and air in the first air storage barrel enters the brake air chamber through the hand brake valve, the first electromagnetic valve and the quick release valve. When the sensor senses the fact that the airport shuttle bus is in the running state and the bus door is in an open state, the controller sends out a first control signal to enable the first electromagnetic valve to be switched into a normally-closed state and the deflation valve to be switched into a normally-open state, air in the brake air chamber is discharged through the deflation valve, and the airport shuttle bus is braked.

Description

technical field [0001] The invention relates to an airport shuttle bus, in particular to an airport shuttle bus safety system. Background technique [0002] The airport shuttle bus shuttles boarding and disembarking passengers between the terminal building and the aircraft with remote stands, and is applicable to the aprons and places of various civil aviation airports. The airport shuttle bus shuttles the boarding and disembarking passengers between the terminal building and the plane with a remote stand. [0003] The operating environment of the airport shuttle bus in the airport requires the speed to be below 30km / h, and the passenger door of the airport shuttle bus is a swing-out door. When the door opening brake device is not installed, the self-locking device of the passenger door fails or In the event of an air leak, the passenger door may open suddenly, posing a risk of injury to passengers who are close to the passenger door. [0004] In addition, at present, the ...

AI Technical Summary

Problems solved by technology

[0003] The operating environment of the airport shuttle bus in the airport requires the speed to be below 30km / h, and the passenger door of the airport shuttle bus is a swing-out door. When the door opening brake device is not installed, the self-locking device of the passenger door fails or In the event of an air leak, the passenger door may open suddenly, posing a risk of injury to passengers close to the passenger door

[0004] In addition, at present, the parking brake is generally released by controlling the hand brake valve, and when the hand brake valve cannot release the parking brake, a manual wrench is usually used to loosen the nuts on the top bolts of the composite spring brake air chamber. This process is very tedious and time-consuming

[0005] However, the airport shuttle bus runs between the terminal building and the aircraft at a remote stand, and the airport shuttle bus may accidentally park between the terminal building and the aircraft at a remote stand, and suddenly the hand brake valve cannot quickly release the parking brake. The shuttle bus cannot be towed away from the scene quickly, which may lead to accidental danger

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