An Inertia-Based Memory Alloy Constrained Isolation Mechanism

Abstract

The invention discloses an inertia-based memory alloy constrained isolation mechanism, and belongs to the technical field of fuse safety mechanisms. The isolation mechanism comprises a body provided with a rotor hole in the centre, and a rotor coaxially nested in the rotor hole and capable of rotating relative to the body, wherein corresponding holes for accommodating a memory alloy pin puller, an inertia safety component, a fire propagation component and an explosion propagation component are formed in the rotor and the body; and the isolation mechanism has a large isolation termination rotation angle through optimization for the position relationship of the holes, and the isolation mechanism in a safe state and an arming state can be locked at corresponding positions through the arrangement of a multi-stage safety mechanism. According to the isolation mechanism disclosed by the invention, through the abovementioned arrangement, on one hand, the component arrangement form of the isolation mechanism is optimized, the spatial dimensions of the isolation mechanism are reduced, and the applicability of the isolation mechanism is improved; and on the other hand, the safety of the isolation mechanism can be effectively improved through two-stage safety in the safe state, and the alignment of a detonation sequence can be effectively ensured through two-stage locking in the arming state, so that the detonation efficiency is greatly increased.

Description

Technical field [0001] The invention belongs to the technical field of fuze insurance mechanisms, and in particular relates to an inertia-based memory alloy restrained isolation mechanism. Background technique [0002] Pyrotechnics is a general term for disposable components and devices that are loaded with gunpowder or explosives, which burn or explode after being stimulated by the outside to ignite gunpowder, detonate explosives or perform mechanical work. Isolation mechanism is usually set in pyrotechnics, its function is to isolate the sensitive pyrotechnic element in the transmission sequence from the next-level pyrotechnic element at ordinary times, to ensure that the fuze does not ignite when the pyrotechnic product accidentally acts in advance, so as to avoid The ammunition exploded early and endangered the safety of personnel and equipment. [0003] The safety of the fuze involves the entire life cycle of the fuze's demonstration, design, manufacturing, inspection and acc...

AI Technical Summary

Problems solved by technology

First of all, when the safety of the isolation mechanism is released and the movement is in place, the isolation mechanism does not have a locking function. In the vibration environment, it is easy to cause the isolation mechanism to be misplaced, and eventually lead to incomplete alignment of the explosion sequence; secondly, the two-stage safety of the horizontal rotor type isolation mechanism If the components are misplaced, the size of the mechanism will be larger and the use of space will be unreasonable; again, the horizontal rotor isolation mechanism usually does not effectively use the environmental information on the bomb (such as flight overload, centrifugal force, aerodynamic heat, etc.), and the two-stage insurance The drive needs to consume fuze or bomb power supply, resulting in waste of energy and low safety

The above-mentioned defects limit the application of the horizontal rotor type isolation mechanism to a certain extent, have certain influence on the safety and practicability of the isolation mechanism, and cannot fully satisfy the safe use of the fuze.

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