Explosive bolt

Abstract

The invention discloses an explosive bolt comprising an explosive bolt inner cylinder, an explosive bolt outer cylinder, a piston and multiple resilient pins. Each resilient pin comprises a pin body A, a pin body B and an resilient structure, wherein when squeezed, the resilient structure can generate deformation, when not squeezed, the resilient structure can recover the shape, the first end of the pin body A is in contact connection with the first end of the pin body B, the second end of the pin body B is connected with the first end of the resilient structure, and the second end of the resilient structure is fixed to the explosive bolt outer cylinder. High-pressure gas generated by an igniter is sealed in the explosive bolt inner cylinder by the piston, the purpose of avoiding pollutinggas discharge is achieved, and the explosive bolt is environmentally friendly. The multiple resilient pins are arranged, so that the bearing capacity of the explosive bolt can be improved. Due to thedesign of connection between an annular protrusion and the explosive bolt outer cylinder, the bearing capacity of the explosive bolt can be further improved. Due to the special shape of the resilientpins, the explosive bolt can achieve reliable separation, the piston can also be limited, and a reliable sliding function can be provided when the explosive bolt inner cylinder and the explosive boltouter cylinder are unlocked.

Description

technical field [0001] The invention belongs to the technical field of aerospace and pyrotechnics, and in particular relates to explosive separation bolts. Background technique [0002] The invention belongs to the field of aerospace and pyrotechnics, and in particular relates to an impact-resistant green explosive separation bolt, which can be used for separation and unlocking between stages of spacecraft, separation between cabins, and the like. [0003] Explosive separation bolt is an important separation and unlocking pyrotechnic device in the aerospace field. This device uses the driving and destructive effects of the explosion to cause sliding movement between the inner and outer cylinders of the bolt or cause shear damage to the weak link of the bolt. , to achieve the effect of explosive separation. [0004] Existing explosive bolts mainly include shear type, shear pin type explosive separation bolts, weakened groove type explosive separation bolts, ball type, ball s...

AI Technical Summary

Problems solved by technology

[0005] The shear type and shear pin type explosive separation bolts have the advantages of small separation impact, no pollution and simple assembly. The disadvantages are that the connection force is small and the bearing capacity is limited; the weakened groove type explosive separation bolt has a simple structure and does not generate fragments. However, because the explosion products will overflow from the separation end surface, it will pollute the surrounding environment; the ball type, ball spring type, and wedge type explosion separation bolts have a large connection force, but these bolts have complex structures, complex processing and assembly processes, and high difficulty

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