A kind of working method of airborne crew imitation airbag neck protection device

Abstract

The invention discloses a working method of an imitation air bag neck protection device for airborne passengers. The air bag neck protection device includes an upper neck support air chamber, a middle air chamber and a lower shoulder support air chamber; the upper neck support air chamber can pass through the upper neck The exhaust valve of the supporting air chamber exhausts and releases pressure to the outside, and it can also exhaust to the middle air chamber through the joint exhaust valve, and the middle air chamber expands to achieve a first-level buffer; the middle air chamber can be released outward through the middle air chamber exhaust valve. Exhaust and pressure relief, you can also exhaust the lower shoulder support air chamber through the joint exhaust valve 2, and the lower shoulder support air chamber expands to realize the second level of cushioning; the lower shoulder support air chamber can be released to the Exhaust and release pressure from the outside to achieve three-level buffering; the multi-level buffering method of the imitation air bag neck protector can not only prevent the human head and neck from re-collision with the interior of the chariot, but also realize multi-level pressure inside the air chamber. Stage release prevents the airbag neck guard from bursting, thereby effectively ensuring the safe landing of the airborne crew.

Description

technical field [0001] The invention relates to the field of manned airborne safety protection, in particular to a working method of an airbag-like neck protection device for airborne occupants. Background technique [0002] Manned airborne means that the airborne combat vehicle and the crew are airborne at the same time. Since the airborne occupants will bear the huge impact load on the ground at the moment of landing, in order to ensure the safe landing of the airborne occupants, occupant protection devices must be used to reduce the damage to the human body caused by the impact load. As an overall protective device, the airborne crew safety seat can effectively reduce the damage to the occupant caused by the impact load, and avoid secondary collision between the occupant and the interior of the tank. However, a lot of practice has shown that the neck injury of the human body is the most important form of injury when the airborne crew lands, and the safety seat alone cann...

AI Technical Summary

Problems solved by technology

[0003] In the actual manned airborne landing process, the cushioning effect of the existing airborne crew neck protection device is limited, and there are the following problems: in the existing airborne crew neck protection device, the neck protection device of mechanical structure is often used, but this This kind of neck protection device has high rigidity and heavy weight, especially under the action of impact load, it is easy to bruise with the human body

However, during the cushioning process of manned airborne landing, if the vent hole of the airbag neck protection device is too large, it will not be able to effectively cushion and protect the head and neck of the human body, which will easily cause secondary collisions between the head and neck of the human body and the interior of the tank. If the exhaust hole of the airbag neck guard device is too small, it is easy to cause the airbag to burst due to the sharp increase in the internal pressure of the airbag cavity and the slow outward exhaust speed, which will cause fatal damage to the airborne occupants

[0006] During the impact process of manned airborne landing, the occupant's neck injury is mainly caused by the acceleration and velocity of the human head relative to the first rib of the human chest. If the occupant's head under the impact load can be well reduced or limited The movement characteristics can effectively reduce the occupant's neck injury, but the current airbag neck protection device has limited movement restrictions on the airborne occupant's head

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