CN113878538A

CN113878538A - Low-noise pin puller

Info

Publication number: CN113878538A
Application number: CN202111257066.5A
Authority: CN
Inventors: 冀小刚; 姬宇飞; 王端; 李帅; 郭伟
Original assignee: North University of China
Current assignee: North University of China
Priority date: 2021-10-27
Filing date: 2021-10-27
Publication date: 2022-01-04

Abstract

The invention relates to a novel low-noise pin puller, which is applied to the field of initiating explosive devices and mainly comprises a blocking cover (2), a shell (4), an ignition tube (5), memory alloy (6), an adapter (7), a support ring (8), a powder column (9) and a pin (10). According to the invention, the ignition tube is electrified to ignite the ignition powder, and the ignition powder is combusted to generate heat so as to heat and contract the memory alloy, thereby realizing pin pulling of the pin puller. Inside the blanking cover, add the polytetrafluoroethylene board blotter of certain thickness to reduce the sound that produces when the pin pulling in-process memory alloy collides with the blanking cover. Through encapsulating the solidus board, furthest hinders the outgoing of sound. The device can be applied to insurance and release of an underwater and aerospace weapon system, rapid low-noise pin pulling and unlocking of initiating explosive devices is realized, and pin pulling sound is less than 140 db.

Description

Low-noise pin puller

Technical Field

The invention belongs to the technical field of initiating explosive devices, and particularly relates to a low-noise pin puller.

Background

Dexterity and concealment are important factors for measuring the viability of underwater weaponry in a complex battlefield, and various actions of the underwater weaponry need to use initiating explosive devices. The initiating explosive device is used as a key part of weapon action, and on the premise of ensuring safety and reliability, the low-noise technology can generate great technical breakthrough in the aspect of system stealth performance, and is the development trend of the initiating explosive device in water in the future. The small-sized low-noise pin puller is used as a mechanical work-doing type driving initiating explosive device, can realize locking and releasing of the structure, is low in noise and has a wide application prospect in underwater weapons.

In the traditional pin pulling device, a weak link is cut off by high-pressure gas generated by charging in the pin pulling process, so that a piston retracts to apply work, and great sound is often generated when the weak link is cut off.

Disclosure of Invention

The invention provides a low-noise pin puller, which aims to solve the technical problems that: the pin puller is used for realizing low-noise quick pin pulling unlocking of the pin puller.

In order to solve the technical problem, the invention provides a low-noise pin puller, which is characterized in that: comprises a blanking cover 2, a shell 4, an ignition tube 5, a memory alloy 6, an adapter 7, a support ring 8, a charge column 9 and a pin 10; an ignition tube 5, a support ring 8, a charge column 9 and a pin 10 are sequentially arranged in the memory alloy 6 from top to bottom; the ignition tube 5 is connected with a threaded hole at the upper end of the memory alloy 6 through the adapter 7, the plug cover covers the upper part of the memory alloy, the memory alloy is tightly attached to the lower end face of the plug cover to enable the plug cover to restrain the plug cover, the spring is sleeved at the lower part of the pin, and the shell is sleeved outside the memory alloy and is in threaded connection with the plug cover.

Has the advantages that: the effects of the invention are embodied in the following aspects:

the device has simple structure and is a novel mechanical working type driving type initiating explosive device.

2 this device operational reliability is good, can reliably pull out the round pin.

3 this device satisfies can low noise pull out round pin under different environment better.

Drawings

Fig. 1 is a low noise pin puller device.

Wherein: the ignition device comprises a wire fixing plate 1, a plug cover 2, a cushion pad 3, a shell 4, an ignition tube 5, a memory alloy 6, an adapter 7, a support ring 8, a charge column 9 and a pin 10.

Detailed Description

In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention is provided.

The invention provides a low-noise pin puller, which is characterized in that: the ignition device comprises a wire fixing plate 1, a plugging cover 2, a cushion pad 3, a shell 4, an ignition tube 5, a memory alloy 6, an adapter 7, a support ring 8, a charge column 9 and a pin 10;

the wire fixing plate is screwed with a threaded hole in the top of the plug cover, the cushion pad 3 is fixed on the top of the inner cavity of the plug cover through a screw, and an ignition tube 5, a support ring 8, a charge column 9 and a pin 10 are sequentially arranged in the memory alloy 6 from top to bottom; the ignition tube 5 is connected with a threaded hole at the upper end of the memory alloy 6 through an adapter 7, the upper part of the memory alloy is covered by the plug cover, the memory alloy is tightly attached to the lower part of the plug cover to enable the plug cover to restrain the memory alloy, the upper part of the pin is connected with a threaded hole at the lower part of the memory alloy, the lower part of the pin is sleeved with the spring, the shell is sleeved outside the memory alloy and is in threaded connection with the plug cover, and a lead of the ignition tube penetrates through the wire fixing plate to be led out.

The line fixing plate and the blocking cover of the device adopt aluminum alloy rods, the cushion pad adopts epoxy resin, the support ring adopts a polytetrafluoroethylene plate, the adapter and the shell adopt stainless steel rods, the pin adopts alloy structural steel, and the explosive column adopts ignition powder with high heat value.

According to the invention, a proper amount of ignition powder is added into the memory alloy inner cavity, after the pin puller is assembled, direct current is input into the low-noise pin puller, the ignition tube fires to ignite the ignition powder in the memory alloy, the ignition powder burns to generate a large amount of heat, the memory alloy is heated and shrunk, so that the constraint of the blocking cover is removed, and the pin retracts inwards together with the memory alloy under the action of the elastic force of the spring, so that the pin puller is realized.

The plug cap does not contain high explosive and large impact, the cushion pad made of polytetrafluoroethylene plates is added into the plug cap, the sound generated by collision in the pin pulling process is reduced, and the sound can be blocked from being transmitted to a greater extent by glue filling of the wire fixing plates.

The invention belongs to a mechanical working type driving type initiating explosive device, can be applied to the insurance and the release insurance of an underwater and aerospace weapon system, realizes the rapid low-noise pin pulling and unlocking of initiating explosive devices, and has the pin pulling sound less than 140 db.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a low noise pin puller which characterized in that: comprises a blanking cover (2), a shell (4), an ignition tube (5), a memory alloy (6), an adapter (7), a support ring (8), a grain (9) and a pin (10); an ignition tube (5), a support ring (8), a charge column (9) and a pin (10) are sequentially arranged in the memory alloy (6) from top to bottom; the ignition tube (5) is connected with a threaded hole at the upper end of the memory alloy (6) through the adapter (7), the plug cover covers the upper part of the memory alloy, the memory alloy is tightly attached to the lower end face of the plug cover to enable the plug cover to restrain the memory alloy, the spring is sleeved at the lower part of the pin, and the shell is sleeved outside the memory alloy and is in threaded connection with the plug cover.

2. A low noise pin puller as set forth in claim 1, wherein: the wire fixing plate is screwed with a threaded hole at the top of the plug cover, and a lead of the ignition tube passes through the wire fixing plate and is led out.

3. A low noise pin puller as set forth in claim 1, wherein: the buffer pad (3) is fixed on the top of the inner cavity of the blanking cover through a screw.

4. A low noise pin puller as set forth in claim 1, wherein: the upper part of the pin is connected with the lower threaded hole of the memory alloy.

5. A low noise pin puller as set forth in claim 2, wherein: the wire fixing plate and the plug cover are made of aluminum alloy rods.

6. A low noise pin puller as set forth in claim 3, wherein: the cushion adopts epoxy.

7. A low noise pin puller as set forth in any one of claims 1-6, wherein: the support ring adopts a polytetrafluoroethylene plate.

8. A low noise pin puller as set forth in claim 7, wherein: the adaptor and the shell are made of stainless steel bars.

9. A low noise pin puller as set forth in claim 7, wherein: the pin is made of alloy structural steel.

10. A low noise pin puller as set forth in claim 7, wherein: the explosive column adopts ignition powder with high heat value.