1. A rotary bullet detonator explosion-proof mechanism with recovery insurance and insensitive characteristic is characterized in that: the detonating tube (2) and the detonating tube (9) are arranged in the detonator body (10) and used for blocking the tail part of the detonator body (10); the rotary bullet fuse explosion-proof mechanism comprises a partition plate cover (3), a partition plate seat (8), a first partition block (4), a second partition block (5), two pre-pressing springs (7) and two supporting bolts (6); the partition plate seat (8) is a rotary body, a first groove is formed in the direction from the top surface to the bottom surface along any radial direction to serve as a partition chamber, the partition chamber is divided into a first chamber, a second chamber and a third chamber along the radial direction, the first chamber and the third chamber are correspondingly identical in size and shape, the width and the length of the second chamber are smaller than those of the first chamber, and the annular partition plate cover (3) is arranged on the top surface of the partition plate seat (8) and is fixedly riveted; one side of the first spacer block (4) is radially provided with a first blind hole, the other side corresponding to the first blind hole is provided with a first boss, the shape of the second spacer block (5) is matched with that of the first spacer block (4), the second spacer block (5) is also provided with a second blind hole and a second boss, the first boss and the second boss are meshed up and down in the second cavity, the two supporting bolts (6) are coaxially and symmetrically arranged, the two ends of the shaft respectively penetrate through the spacer block seat (8) to extend into the separation cavity, each blind hole is internally connected with a pre-pressing spring (7), and the other end of each pre-pressing spring (7) is sleeved on the supporting bolt (6) and is limited through the inner wall of the separation cavity.

2. A rotary projectile detonator explosion suppression mechanism with arming and disarming characteristics as claimed in claim 1, wherein: the center of the bottom of the partition plate seat (8) is provided with a second groove, so that energy can be conveniently transferred to the booster tube (9) along the lower part after the detonating tube (2) above is detonated, and the booster tube (9) is detonated.

3. A rotary projectile fuse explosion suppression mechanism with recovery safety and insensitivity characteristics as claimed in claim 2, wherein: the detonating tube (2) in the rotary bullet detonator is changed into an energy gathering structure.

4. A rotary projectile detonator explosion suppression mechanism with arming and disarming features as claimed in claim 3, wherein: when the rotary bullet detonator explosion-proof mechanism is embedded into the explosion-conducting tube shell of the explosion-conducting tube (9), the bottom surface of the rotary bullet detonator explosion-proof mechanism is contacted with the explosive surface of the explosion-conducting powder, and the supporting bolt (6) is riveted on the explosion-conducting tube shell.

5. A rotary projectile detonator explosion suppression mechanism with arming and disarming features as claimed in claim 3, wherein: the rotary bomb detonator explosion-proof device is characterized by further comprising an inner shell (11) and an outer shell (12), wherein the inner shell (11) is cylindrical, the rotary bomb detonator explosion-proof mechanism is tightly matched and arranged in the inner shell (11), the supporting bolt (6) is fixedly riveted on the inner shell (11), the outer shell (12) is cylindrical, a fire transfer hole is formed in the center of the bottom surface, and the inner shell (11) provided with the rotary bomb detonator explosion-proof mechanism is arranged in the outer shell (12) through tight matching.

Background

With the development of modern war, higher requirements are put on the performance of the fuze. The requirement that the fuze should have explosive treatment characteristics to ensure the safety of ammunition explosive treatment is specified according to GJB 373B-2019 'fuze safety design criteria' standard. Furthermore, modern fuzes should also have an insensitivity in order to ensure adequate safety against accidental stimuli such as gunshot firing, fragment strikes and jet impact, and fire. Although the explosion-proof safety between the detonating tube and the booster tube is considered in the design of the conventional rotary bullet detonator, a mechanism for realizing the explosion-proof safety is complex, and the space inside the detonator is large.

Disclosure of Invention

The invention aims to provide a rotary bullet detonator explosion-proof mechanism with recovery safety and insensitive characteristic, which can relieve the fuse under a preset rotary environment and recover the safety when the rotation is stopped.

The technical solution for realizing the purpose of the invention is as follows: a rotary bullet detonator explosion-proof mechanism with the characteristics of safety recovery and insensitivity is arranged in a detonator body and is used for separating a detonating tube and a detonating tube at the tail part of the detonator body; the rotary bullet fuse explosion-proof mechanism comprises a partition plate cover, a partition plate seat, a first partition block, a second partition block, two pre-pressing springs and two supporting bolts; the partition plate seat is a rotary body, a first groove is formed in the direction from the top surface to the bottom surface along any radial direction to serve as a partition cavity, the partition cavity is divided into a first chamber, a second chamber and a third chamber along the radial direction, the first chamber and the third chamber are correspondingly identical in size and shape, the width and the length of the second chamber are smaller than those of the first chamber, and an annular partition plate cover is arranged on the top surface of the partition plate seat and is fixedly riveted; one side of the first spacer block is provided with a first blind hole along the radial direction, the other side corresponding to the first blind hole is provided with a first boss, the shape of the second spacer block is matched with that of the first spacer block, the second spacer block is also provided with a second blind hole and a second boss, the first boss and the second boss are vertically meshed in the second cavity, the two supporting bolts are coaxially and symmetrically arranged, the two ends of the shaft respectively penetrate through the partition plate seat to extend into the separation cavity, a pre-pressing spring is connected in each blind hole, and the other end of each pre-pressing spring is sleeved on the corresponding supporting bolt and is limited by the inner wall of the separation cavity.

The rotary bullet detonator explosion-proof mechanism with the safety recovery and insensitivity characteristics further comprises an inner shell and an outer shell, wherein the inner shell is cylindrical, the rotary bullet detonator explosion-proof mechanism is tightly matched and arranged in the inner shell, the supporting bolt is fixedly riveted on the inner shell, the outer shell is cylindrical, a fire transfer hole is formed in the center of the bottom surface, and the inner shell provided with the rotary bullet detonator explosion-proof mechanism is arranged in the outer shell through tight matching.

Compared with the prior art, the invention has the following remarkable advantages:

(1) the detonating tube adopts an energy gathering structure.

(2) The mechanism is arranged in the fuse body and used for blocking the detonating tube and the detonating tube at the tail part of the fuse body.

(3) The occupied space is small, and the axial size of the fuse is increased by about 5-10 mm.

(4) The parts are easy to process, the structure is compact and simple, and the cost is low.

(5) Can simultaneously meet the requirement of insensitivity of ammunition and the safety requirement of explosive treatment of unexploded ammunition.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of the rotary bullet fuse explosion-proof mechanism with the safety recovery and insensitivity characteristics, in which 3 is a diaphragm cover, 4 is a first spacer, 5 is a second spacer, 6 is a support bolt, 7 is a pre-compression spring, 8 is a diaphragm seat, 11 is an inner shell, and 12 is an outer shell.

Fig. 2 is a schematic structural diagram of an embodiment 1 of the rotary bomb detonator explosion-proof mechanism with the characteristics of safety recovery and insensitivity in an assembled state, wherein 1 is an explosion-proof seat, 2 is a detonator, 9 is a booster, and 10 is a detonator body.

Fig. 3 is a schematic structural diagram of an embodiment 2 of the rotary bullet fuse explosion-proof mechanism with the characteristics of safety recovery and insensitivity.

Fig. 4 is a sectional view a-a of fig. 3.

Fig. 5 is a schematic structural diagram of an embodiment 2 of the rotary bullet fuse explosion-proof mechanism with the characteristics of restoration safety and insensitivity in the state of release safety.

In fig. 1 to 5, only the fuse explosion-arresting mechanism, the squib and the squib are shown. The other mechanisms of the fuse, such as an explosion-proof mechanism, a redundancy safety mechanism, a delay relief safety mechanism and the like, are omitted and not shown.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

With reference to fig. 1 to 5, the rotary bullet detonator explosion-blocking mechanism with the characteristics of safety recovery and insensitivity is arranged in a detonator body 10 and used for blocking a detonator 2 and a booster 9 at the tail of the detonator body 10; the rotary bullet fuse explosion-proof mechanism comprises a partition plate cover 3, a partition plate seat 8, a first partition block 4, a second partition block 5, two pre-pressing springs 7 and two supporting bolts 6; the partition plate seat 8 is a rotary body, a first groove is formed in the direction from the top surface to the bottom surface along any radial direction to serve as a partition chamber, the partition chamber is divided into a first chamber, a second chamber and a third chamber along the radial direction, the first chamber and the third chamber are correspondingly identical in size and shape, the width and the length of the second chamber are smaller than those of the first chamber, and the annular partition plate cover 3 is arranged on the top surface of the partition plate seat 8 and is fixedly riveted; a first blind hole is formed in one side of a first spacer block 4 in the radial direction, a first boss is arranged on the other side corresponding to the first blind hole, a second spacer block 5 is matched with the first spacer block 4 in shape, a second blind hole and a second boss are also arranged on the second spacer block 5, the first boss and the second boss are meshed up and down in a second cavity, two supporting bolts 6 are coaxially and symmetrically arranged, the two ends of a shaft penetrate through a spacer block seat 8 respectively and extend into a separation cavity, a pre-pressing spring 7 is connected into each blind hole, and the other end of each pre-pressing spring 7 is sleeved on each supporting bolt 6 and limited through the inner wall of the separation cavity.

Furthermore, a second groove is formed in the center of the bottom of the partition plate seat 8, so that energy can be conveniently transmitted to the booster 9 along the lower part after the upper detonator 2 is detonated, and the booster 9 is detonated.

Further, the detonator 2 in the rotary bullet detonator is changed to a cumulative structure.

Further, when the rotary bullet detonator explosion-proof mechanism is embedded into the detonator shell of the detonator 9, the bottom surface of the rotary bullet detonator explosion-proof mechanism is contacted with the explosive surface of the detonator explosion-proof agent, and the supporting bolt 6 is riveted on the detonator shell.

The rotary bomb detonator explosion-proof mechanism with the characteristics of safety recovery and insensitivity further comprises an inner shell 11 and an outer shell 12, wherein the inner shell 11 is cylindrical, the rotary bomb detonator explosion-proof mechanism is tightly matched and arranged in the inner shell 11, a supporting bolt 6 is fixedly riveted on the inner shell 11, the outer shell 12 is cylindrical, a fire transmission hole is formed in the center of the bottom surface, and the inner shell 11 provided with the rotary bomb detonator explosion-proof mechanism is arranged in the outer shell 12 through tight matching.

The difficulty of the invention is that the explosion-proof safety between the detonating tube and the detonating tube needs to be considered when the rotary bullet detonator is designed. The existing mechanism for realizing the explosion-proof safety often makes the structure of the fuse more complex, occupies a larger space inside the fuse, is difficult to meet the requirement of the miniaturization of the fuse, and is difficult to ensure high reliability. The environmental forces that can be used to defeat the spin bomb are limited. And the explosion-proof mechanism with the recovery safety and the insensitive characteristic can simultaneously realize the functions and effectively avoid the problems.

Example 1

Fig. 2 shows a schematic view of the structure of the present invention when it is installed as a stand-alone module. At the moment, the rotary bomb detonator explosion-proof mechanism with the characteristics of safety recovery and insensitivity is arranged in the inner shell 11 in a close fit mode, the supporting bolt 6 is fixedly riveted on the inner shell 11, the outer shell 12 is in a cylindrical shape, the center of the bottom surface is provided with a fire transfer hole, and the inner shell 11 provided with the rotary bomb detonator explosion-proof mechanism is arranged in the outer shell 12 in a close fit mode. At ordinary times, the first spacer 4 and the second spacer 5 are pressed by the resistance force of the pre-pressing spring 7 in the partition plate seat 8 and are vertically meshed in the second cavity of the partition plate seat 8, at the moment, the explosion-proof mechanism is in an explosion-proof state, and even if the detonating tube 2 above the detonating tube is accidentally ignited due to the action of insensitive factors such as fire accidental baking, gunshot, fragment striking, jet impact and the like, the detonating tube 9 below the detonating tube cannot be detonated. When the projectile is fired in the bore, the belt interacts with the gun rifling to begin rotation. When the shot moves to be close to the opening of the chamber, the centrifugal force of the first spacing block 4 and the second spacing block 5 overcomes the friction force generated by the recoil force of the first spacing block and the second spacing block and the resistance force of the pre-pressing spring 7 to move outwards. At which point the explosion suppression mechanism begins its arming motion. The cumulative jet produced after the upper detonating tube 2 is ignited can detonate the detonating tube 9 below the detonating tube.

Example 2

Fig. 3 shows a schematic view of the construction of the present invention when installed with the booster inserted. When the rotary bullet detonator explosion-proof mechanism is embedded into the detonator shell of the detonator 9, the bottom surface of the rotary bullet detonator explosion-proof mechanism is contacted with the surface of the detonator explosive, and the supporting bolt 6 is fixedly riveted on the detonator shell. At ordinary times, the first spacer 4 and the second spacer 5 are pressed by the resistance force of the pre-pressing spring 7 in the partition plate seat 8 and are vertically meshed in the second cavity of the partition plate seat 8, at the moment, the explosion-proof mechanism is in an explosion-proof state, and even if the detonating tube 2 above the detonating tube is accidentally ignited due to the action of insensitive factors such as fire accidental baking, gunshot, fragment striking, jet impact and the like, the detonating tube 9 below the detonating tube cannot be detonated. When the projectile is fired in the bore, the belt interacts with the gun rifling to begin rotation. When the shot moves to be close to the opening of the chamber, the centrifugal force of the first spacing block 4 and the second spacing block 5 overcomes the friction force generated by the recoil force of the first spacing block and the second spacing block and the resistance force of the pre-pressing spring 7 to move outwards. At which point the explosion suppression mechanism begins its arming motion and moves to the position shown in figure 5. The cumulative jet produced after the upper detonating tube 2 is ignited can detonate the detonating tube 9 below the detonating tube.

The invention has the technical bright points that the rotary bullet explosion-proof mechanism with the characteristics of safety recovery and insensitivity is adopted, and the rotary bullet explosion-proof mechanism can be opened under the action of centrifugal force when a bullet flies, so that a detonating tube can detonate a detonating tube; when the rotating speed of the projectile is attenuated or stops rotating, the safety can be recovered, the detonating tube is prevented from being accidentally detonated, and the safety requirement of handling the unexploded explosive is met. Meanwhile, the structure occupies small space inside the fuse.

If the fuse fails to fire normally by accident, the first and second partitions 4 and 5 are not acted by centrifugal force any more and move inwards in radial direction only by the resistance of the pre-pressing spring 7 after the projectile stops rotating. At the moment, the explosion-proof mechanism starts to recover the safety movement, namely, the fuse recovers the safety, so that the explosive treatment safety of the unexploded explosive can be ensured. The term "fail safe" as used herein means, of course, a specific meaning that only the explosive material of the unexploded explosive can be safely handled, and the "fail safe" in the state where the fuse is shipped from the factory is not used.

The invention adopts the explosion propagation principle of the blocking energy-gathering jet detonating tube to realize the safe and insensitive characteristics of processing the unexploded explosive explosives, does not relate to the performances of the existing explosion suppression, redundant insurance, delayed release insurance and the like, has weak relevance with the existing structure, and is easy to popularize, use and reform the existing product. The explosion suppression is carried out on the booster of the detonating tube, the problem that the detonator which needs to be isolated at ordinary times in an explosion suppression mechanism reliably detonates the detonating tube is not involved, and the detonating tube does not need to be replaced by insensitive explosive, so that the design of the booster structure of the detonator on the detonating tube can not be adjusted, and the reliability is easy to realize. On the other hand, the requirement of explosion-proof safety, namely the requirement of explosive processing safety and insensitivity, is different from the requirement of fuze explosion-proof safety, namely the requirement of explosion-proof safety is lower than the requirement of fuze explosion-proof safety, and in principle, only the booster explosive does not explode (combustion is allowable), so that the feasible design range of the explosion-proof mechanism is larger.