Emergency escape hand-control device and emergency escape hand-control system for pneumatic-control bus door of bus

Abstract

The invention relates to an emergency escape hand-control device and an emergency escape hand-control system for a pneumatic-control bus door of a bus. The system is provided with two hand-control devices (pop safety valves) which are connected in series, wherein the hand-control devices are respectively arranged at the bus door and a navigation bridge, can be respectively operated by a driver and passengers and can operate by virtue of manual control on any position; with reference to the hand-control devices, by virtue of rotating an operating handle for 90 degrees clockwise, an air path for connecting an air pump with the cylinder of the bus door can be rapidly cut off; and meanwhile, the pressure air in the cylinder of the bus door is rapidly discharged, so that the bus door can be easily pushed away by hand, and thus the passengers can escape. The system provided by the invention has the advantages of being simple in structure, safe and reliable in use and convenient and labor-saving in operation, being capable of realizing the rapid opening of the bus door, ensuring that the two hand-control devices are mutually independent and have no interference, and greatly increasing the escape probability of the passengers in the bus under emergency conditions.

Description

technical field [0001] The invention belongs to the field of public traffic safety, and in particular relates to an emergency escape manual control device for an air-controlled car door and its two-position independent control. Background technique [0002] As one of the most important means of public transportation, bus safety is the most important. Over the past few years, when the bus has an emergency, the air-controlled car door cannot be opened normally due to various reasons, thereby causing heavy losses everywhere. In the Chengdu bus fire in 2009, the driver tried to open the door but still could not open it, causing serious losses. [0003] At present, emergency safety valves have been installed on existing buses, and the emergency self-rescue switches used are all designed on the principle of electromagnetic. , to control the power gain and loss of the electromagnetic coil, so that the electromagnetic unloading valve connected to it acts, thereby opening the door....

AI Technical Summary

Problems solved by technology

Although this type of switch is easy to operate, once it is subjected to high temperature or violent impact, its reliability is insufficient, so that the door cannot be opened smoothly in an emergency

At the same time, the existing emergency safety valves are all arranged near the car door. When the car door cannot be opened normally, passengers need to operate the safety valve to open the car door.

However, when emergency situations such as fires occur in the bus, especially when there are many people on board, untrained passengers often panic and do not know how to open the door urgently.

But the driver was beyond his reach at this time, and no one heard the driver's on-site guidance, which eventually caused great losses.

Images