CN110873545A

CN110873545A - Initiating explosive actuator

Info

Publication number: CN110873545A
Application number: CN201811016142.1A
Authority: CN
Inventors: 刘鹏飞
Original assignee: Xiaogan Dingyuan Electronic Technology Co Ltd
Current assignee: Xiaogan Dingyuan Electronic Technology Co Ltd
Priority date: 2018-09-02
Filing date: 2018-09-02
Publication date: 2020-03-10

Abstract

The invention discloses an initiating explosive actuator, and belongs to the technical field of actuators. The electric heating sensitive primer comprises a firing component, an electric heating sensitive firing powder, a piston, a gasket, an O-shaped sealing ring, a pressing block, a clamping head, a clamping pin, a pipe shell and a sealant. One end of the ignition component is fixed in the electric heating sensitive ignition powder and is connected with the pipe shell in a sealing way, the electric heating sensitive ignition powder is filled in the cylindrical piston chamber, the gasket ensures that the actuator is locked at the original position, when the clamping pin is fixed on the pipe shell, the circumferential surface of the clamping pin is coated with insulating paint, and the two clamping pins are disconnected with each other. When the device is used, the ignition assembly ignites the electrothermal sensitive ignition powder to generate a large amount of gas, the piston is pushed to generate reliable thrust in a short time, the resistance of the gasket is overcome, the clamping pin is matched with the inclined surface of the clamping head, the clamping head is contacted with the clamping pin after the actuator moves in place, the two clamping pins are switched on from disconnection, and the clamping pin and the clamping head are self-locked with each other. The invention has the functions of in-place reliable self-locking and state indication and has good application prospect.

Description

Initiating explosive actuator

Technical Field

The invention relates to the technical field of actuators, in particular to a piston type actuator driven by fire.

Background

The traditional typical sealing mode of the piston type actuator adopts an O-shaped sealing ring to ensure the sealing performance, adopts a shear pin structure to carry out thrust design, has larger structural size and does not have a state indicating function. In particular, when an actuator is installed as a driving member in some devices, it is not possible to determine whether the actuator is reliably operated in many cases.

Disclosure of Invention

In view of the above defects or improvement requirements of the prior art, an object of the present invention is to provide an initiating explosive device, which has the advantages of simple structure, good sealing performance, in-place self-locking, status indication function, etc.

In order to achieve the above object, the present invention adopts the following technical solutions, and an explosive actuator, characterized by comprising:

the ignition assembly is a semiconductor bridge ignition assembly;

the electrothermal sensitive primer is trinitroresorcinol lead;

the piston is of a step-shaped structure consisting of a large cylinder and a small cylinder, one end of the large cylinder is provided with a cavity for accommodating the electrothermal sensitive primer, the other end of the large cylinder is provided with two grooves for placing bayonet locks, and the piston is made of 40 Cr;

the gasket is made of a beryllium bronze material with softer texture;

the O-shaped sealing ring is arranged in the pipe shell and used for sealing the actuator;

the pressing block is used for pressing the piston in place;

the clamping head is of a cantilever beam structure, one end with an inclined plane is suspended, the other end is fixed on the piston, and the clamping pin is made of copper or nickel or steel material;

the clamping pin is provided with an inclined plane with the same angle as the inclined plane of the clamping pin, the clamping pin is made of nickel or steel materials, when the clamping pin is fixed on the pipe shell, the circumferential surface of the clamping pin is coated with insulating paint, the two clamping pins are connected with a lead, at the moment, the two clamping pins are equivalent to two poles of the switch, and the two clamping pins are disconnected with each other;

the pipe shell is a thin-wall metal piece, a stepped round hole is formed in the pipe shell, the pipe shell plays roles of supporting, sealing and connecting internal elements, after all parts are installed in the pipe shell, the pipe shell is subjected to closing-up treatment, a sealing glue is coated at a closing-up position, the piston is locked at an initial assembly position and cannot move under the limitation of a gasket, and the thrust function of the piston before actuation is realized.

When the device is used, the ignition assembly ignites the electrothermal sensitive ignition powder to generate a large amount of gas, the piston is pushed to generate reliable thrust in a short time, the gasket is overcome to make forward movement, the clamping pin is matched with the inclined surface of the clamping head, the clamping head is contacted with the clamping pin after the clamping pin overcomes the resistance of the clamping head and moves in place, the two clamping pins are switched on from disconnection, and the clamping pin and the clamping head are self-locked with each other.

The beneficial technical effects of the invention are as follows:

o type circle and sealed design of gluing for the leakproofness of whole actuator is good, the design of gasket and dop and bayonet lock, make the actuator all have reliable self-locking function at initial condition and state of targetting in place, and the design of dop and bayonet lock, make the actuator have state indicating function, be particularly useful for the actuator and pack into the condition whether certain part can't confirm to act, can judge whether the actuator acts through the break-make that detects two bayonet locks.

Drawings

FIG. 1 is a view showing an initial state of the actuator according to the present invention;

FIG. 2 is a view showing the construction of the pyrotechnic actuator of the present invention in place.

In the figure: 1-ignition component, 2-electrothermal sensitive ignition powder, 3-piston, 4-gasket, 5-O-shaped sealing ring, 6-pressing block, 7-clamping head, 8-clamping pin, 9-pipe shell and 10-sealant.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

A preferred embodiment of an pyrotechnic actuator, as shown in fig. 1, comprising:

the ignition assembly 1 is a semiconductor bridge ignition assembly;

the electrothermal sensitive primer 2 is trinitroresorcinol lead;

the piston 3 is of a step-shaped structure consisting of a large cylinder and a small cylinder, one end of the large cylinder is provided with a cavity for accommodating the electrothermal sensitive primer 2, the other end of the large cylinder is provided with two grooves for placing bayonet pins 8, and the piston 3 is made of 40 Cr;

the gasket 4 is made of soft beryllium bronze material;

the O-shaped sealing ring 5 is arranged in the pipe shell 9 and used for sealing the actuator;

a press block 6 for pressing the piston 3 in place;

the clamping head 7 is of a cantilever beam structure, one end with an inclined plane is suspended, the other end is fixed on the piston 3, and the clamping pin 8 is made of copper or nickel or steel material;

the bayonet lock 8 is provided with an inclined plane with the same angle as the inclined plane of the bayonet lock 8, the material of the bayonet lock 8 is nickel or steel material, when the bayonet lock 8 is fixed on the tube shell 9, the circumferential surface of the bayonet lock 8 is coated with insulating paint, the two bayonet locks 8 are connected with a lead, at the moment, the two bayonet locks 8 are equivalent to two poles of a switch, and the two bayonet locks 8 are disconnected with each other.

The pipe shell 9 is a thin-wall metal part, a step-shaped round hole is formed in the pipe shell 9, the pipe shell 9 plays roles of supporting, sealing and connecting internal elements, after all parts are installed in the pipe shell 9, the pipe shell 9 is subjected to closing-up treatment, a closing-up opening is coated with sealant, the piston 3 is locked at an initial assembly position, the piston 3 cannot move under the limitation of the gasket 4, and the thrust function of the piston 3 before actuation is realized.

When the device is used, the ignition assembly 1 ignites the electrothermal sensitive ignition powder 2 to generate a large amount of gas, the piston 3 is pushed to generate reliable thrust in a short time, the gasket 4 is overcome to move forwards, the clamping pin 8 is matched with the inclined surface of the clamping head 7, the clamping head 7 is contacted with the clamping pin 8 after the clamping pin 8 overcomes the clamping head resistance to move in place, the two clamping pins 8 are switched on from disconnection, and the clamping pin 8 and the clamping head 7 are self-locked with each other. The situation after moving into position is shown in fig. 2.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. An pyrotechnic actuator comprising: the ignition assembly (1) is a semiconductor bridge ignition assembly; the electrothermal sensitive primer (2) is trinitroresorcinol lead; the piston (3) is of a step-shaped structure consisting of a large cylinder and a small cylinder, one end of the large cylinder is provided with a chamber for accommodating the electrothermal sensitive primer (2), the other end of the large cylinder is provided with two grooves for placing bayonet locks, and the piston is made of 40 Cr; the gasket (4) is made of a beryllium bronze material with softer texture; the O-shaped sealing ring (5) is arranged in the pipe shell (9) and is used for sealing the initiating explosive actuator; a press block (6) for pressing the piston (3) in place; the clamping head (7) is of a cantilever beam structure, one end with an inclined plane is suspended, the other end is fixed on the piston (3), and the clamping pin (8) is made of copper, nickel or steel material; the bayonet lock (8) is provided with an inclined plane with the same angle as the inclined plane of the bayonet lock (8), the material of the bayonet lock is nickel or steel material, when the bayonet lock (8) is fixed on the tube shell (9), the circumferential surface of the bayonet lock (8) is coated with insulating paint, the two bayonet locks (8) are connected with a lead, at the moment, the two bayonet locks (8) are equivalent to two poles of a switch, and the two bayonet locks (8) are mutually disconnected; tube (9), for the thin wall metalwork, inside has the round hole of echelonment, and tube (9) play supports, sealed and connect the effect of internal element, and after all spare parts pack into in tube (9), close up the processing to tube (9), the sealed glue of gluing is scribbled to the department of closing up, locks piston (3) at assembly initial position, and piston (3) can not remove by the restriction of gasket (4), realizes piston (3) thrust function before actuating.