CN218170514U

CN218170514U - Rope cutter

Info

Publication number: CN218170514U
Application number: CN202222247803.XU
Authority: CN
Inventors: 吴昊; 杨文�; 张海东; 马建伟; 吴瑞德
Original assignee: No213 Institute Of China North Industries Group Corp
Current assignee: No213 Institute Of China North Industries Group Corp
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-12-30
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a rope cutter, which comprises a shell (7) and an adapter sleeve (3); a fire passing plate (2) and an insensitive electric detonator (1) are sequentially arranged in a cavity at the upper part of the adapter sleeve (3), a small hole is designed on a partition at the middle part of the adapter sleeve (3), and a flame detonator (4) is arranged in a cavity at the lower part of the adapter sleeve communicated with the small hole; a positioning plate [5] is closely arranged on the flame detonator [4], the other end of the positioning plate [5] is connected with one end of a piston [8], and the other end of the piston [8] is connected with a cutter [9 ]; the cutter is internally provided with a flame detonator, a piston is driven to move by detonation waves generated when the flame detonator works, the cutter is driven to move in the movement process of the piston, and a rope is cut off in the movement process of the cutter. The high-energy-density passive-sensing-performance sealing device has the characteristics of high energy density, passivity, good performance, short action time, strong acting capacity and low requirement on structural sealing strength. Suitable for cutting flexible or high strength ropes.

Description

Rope cutter

Technical Field

The utility model belongs to the technical field of the initiating explosive device, concretely relates to rope cutterbar, especially a cutterbar for flexible rope cutting.

Background

The fixed-wing aircraft can produce the stall phenomenon under certain critical state, and the aircraft that gets into the stall state can eventually extend the spiral crash under uncontrolled state because can't produce enough lift. In order to solve the problem, when the airplane is in a stall state, the airplane can release a drogue parachute, the airplane nose can be pulled to point to a specific reverse direction under the action of the drogue parachute, and the airplane can fly out of the stall state by increasing the thrust of an engine. After flying out of the stall state, the parachute rope of the parachute is required to be cut off to throw off the parachute. Since the drag force to which the drogue is subjected is generally more than 10 tons, the parachute line is made of kevlar material excellent in mechanical properties, which is generally used as a material for body armor, so that it is difficult to cut reliably and completely in a short time.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rope cutterbar, the technical problem who solves is: the problem that the high-strength rope cannot be reliably cut in a short time is solved, and the umbrella rope can be cut off within 5ms after the control excitation signal is received.

In order to solve the technical problem, the utility model provides a rope cutterbar, its characterized in that: comprises a shell (7) and an adapter sleeve (3); a fire passing plate (2) and an insensitive electric initiator (1) are sequentially arranged in a cavity at the upper part of the adapter sleeve (3), a small hole is designed on a partition at the middle part of the adapter sleeve (3), and a flame detonator (4) is arranged in a cavity at the lower part of the adapter sleeve communicated with the small hole; a positioning plate [5] is closely arranged on the flame detonator [4], a bulge is arranged on the edge of one end of the positioning plate [5] and is lapped on the step part of the shell [7], and the positioning plate [5] is tightly pressed and fixed at the upper end of the shell [7] by the adapter sleeve [3]; the other end of the positioning plate [5] is fixedly connected with one end of a piston [8], and the other end of the piston [8] is fixedly connected with a cutter [9 ].

Has the advantages that: the utility model discloses utilize the detonation energy drive piston and the cutter motion of the inside explosive that adorns of detonator, can cut off the parachute line in the 5ms time after accepting control excitation signal. Compared with the prior art, the method has the characteristics of good passivity, short action time, strong acting capacity and low requirement on the sealing strength of the structure. Suitable for cutting flexible or high strength ropes.

Drawings

Fig. 1 is a cross-sectional view of a detonation-driven rope cutter according to the present invention before it is in operation.

Fig. 2 is a cross-sectional view of a detonation-driven cord cutter in accordance with the present invention, shown inoperative.

Wherein: 1-insensitive electric detonator, 2-fire plate, 3-adapter sleeve, 4-flame detonator, 5-positioning plate, 6-O-shaped ring, 7-shell, 8-piston and 9-cutter.

Detailed Description

To further clarify the objects, aspects and advantages of the present invention, there will be described in detail embodiments of the invention.

The utility model provides a rope cutter, which comprises a shell body [7] and an adapter sleeve [3] connected with the upper end through a thread; a fire passing plate (2) and an insensitive electric initiator (1) are sequentially arranged in a cavity at the upper part of the adapter sleeve (3) and are connected through threads, a small hole is arranged on a partition at the middle part of the adapter sleeve (3), and a flame detonator (4) is arranged in a cavity at the lower part of the adapter sleeve communicated with the small hole; a positioning plate [5] is closely arranged on the flame detonator [4], a bulge is arranged at the edge of one end of the positioning plate [5] and is lapped on the step part of the shell [7], and the positioning plate [5] is tightly pressed and fixed at the upper end of the shell [7] by the adapter sleeve [3]; the other end of the positioning plate [5] is connected with one end of a piston [8] through threads, so that the piston [8] is ensured not to generate relative displacement with the shell [7] before the piston does not work, and the other end of the piston [8] is connected with the cutter [9] through threads, so that the cutter [9] and the shell [7] cannot generate relative displacement before the piston does not work; the cutter (9) is embedded into the guide groove at the lower end of the shell (7) and can only move along the guide groove.

The ignition current of the insensitive electric detonator [1] is direct current 5A, and the insensitive requirement of no ignition in 1A1W5min is met.

The fire passing plate [2] is provided with 5 small round holes which are circumferentially arranged, the number and the aperture of the round holes can be adjusted according to requirements, the center of the adapter sleeve [3] is provided with a round small hole, and the small hole is not opposite to the round holes on the fire passing plate [2 ].

The flame detonator can generate detonation energy under the stimulation of flame output by the insensitive electric detonator [1 ].

When the cutter works, firstly the insensitive electric detonator [1] is detonated, after the detonation, the detonation energy passes through the small hole on the fire passing plate [2] and the small hole on the adapter sleeve [3] to ignite the flame detonator [4], and the detonation wave generated by the detonation of the flame detonator [4] destroys the edge part of the positioning plate [5] and then pushes the piston [8] to drive the cutter [9] to move.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of 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. A cord cutter characterized by: comprises a shell (7) and an adapter sleeve (3); a fire passing plate (2) and an insensitive electric detonator (1) are sequentially arranged in a cavity at the upper part of the adapter sleeve (3), a small hole is designed on a partition at the middle part of the adapter sleeve (3), and a flame detonator (4) is arranged in a cavity at the lower part of the adapter sleeve communicated with the small hole; a positioning plate (5) is closely mounted on the flame detonator (4), a protrusion is arranged on the edge of one end of the positioning plate (5) and is lapped on the step part of the shell (7), and the positioning plate (5) is tightly pressed and fixed at the upper end of the shell (7) by the adapter sleeve (3); the other end of the positioning plate (5) is fixedly connected with one end of a piston (8), and the other end of the piston (8) is fixedly connected with a cutter (9).

2. A cord cutter as defined in claim 1 wherein: the cutting knife (9) is embedded into a guide groove at the lower end of the shell (7).

3. A cord cutter as defined in claim 1 wherein: the ignition current of the insensitive type exploder is direct current 5A.

4. A cord cutter as defined in claim 1 wherein: a plurality of small round holes arranged along the circumference are formed in the fire passing plate (2), and the positions of the small round holes and the small holes of the adapter sleeve (3) are not right opposite.