CN117606309A - Electromechanical detonation fuse with self-destruction and standby triggering functions for bottom of line bore shell - Google Patents

Abstract

The invention discloses an electromechanical detonation fuse with self-destruction and standby triggering functions at the bottom of a line bore shell, which mainly comprises a fuse upper body, a ball seat, an end cover, a gland, a centrifugal safety mechanism, a recoil safety mechanism, an explosion-proof mechanism, a power generation assembly, a power receiving assembly, an electric triggering assembly, a detection and ignition control electronic assembly and an explosion-propagating sequence. The centrifugal safety mechanism and the squat safety mechanism form redundant safety, and form a safety and isolation releasing mechanism together with the explosion-proof mechanism. The explosion-proof mechanism has the function of delaying the release of explosion-proof; the squat safety mechanism has the functions of centrifugal self-destruction and standby mechanical triggering; the power generation assembly generates power by using a squat environment; the detection and ignition control electronic component can detect geomagnetic signals, can realize fixed-distance air frying of revolution counting according to the installation, gives consideration to timing self-destruction or fire insulation, and can also realize electric triggering ignition by matching with the electric triggering component. The fuze may be adapted to a line bore recoilless grenade.

Description

Electromechanical detonation fuse with self-destruction and standby triggering functions for bottom of line bore shell

Technical Field

The invention belongs to a fuze technology, and particularly relates to an electromechanical detonation fuze for a bottom of a line bore shell with self-destruction and standby triggering functions.

Background

The light-weight backless cannon has further developed since the 70 s of the last century, and the combat uses of the light-weight backless cannon are also continuously expanded, so that the types of the backless cannon are more and more abundant, and the development and perfection of the structure and the performance of the fuze are further promoted. In future combat, the development of a fuze system without a recoil gun is important in order to adapt to different combat demands.

Fuze constructions and actions (Mabaohua fuze constructions and actions [ M ]. Beijing: national defense industry Press, 12 month 1984) described that the U.S. recoil-free shell fuze has an M557 fuze, an M530A1 fuze, an M90A1 fuze, and an M91A1 fuze. The M557 fuze is a warhead mechanical trigger fuze and is mainly matched with a middle-large caliber pressing artillery grenade and a non-recoil grenade, so that the size is large and the non-recoil grenade is not suitable for the non-recoil grenade. The M530A1 fuze is a non-spin fuze, i.e., is not a line bore shell fuze. The construction and action principles of the M90A1 fuze and the M91A1 fuze are as follows:

the M90A1 bullet mechanical fuze is matched with a recoilless gun armor breaking bomb with the caliber of 57mm, the front end of the fuze body is provided with a collision fire cap, the lower part of the fuze body is provided with a cavity booster tube, and the middle part of the fuze body is provided with a rotary detonator seat in a dislocation state and is provided with a flame detonator. The detonator is only provided with a single centrifugal safety, after the recoil of the firing is eliminated, the detonator seat is turned right under the action of centrifugal moment, and the detonator is triggered to subsequently detonate the detonation tube to detonate the projectile when the detonator bumps against the target. The fuse does not meet the design requirement of redundant insurance, does not delay the release of the explosion-proof performance, does not have a self-destruction function, and is difficult to ensure the safety of the fuse.

The M91A1 fuze is a flameproof type primer, and is composed of an inertial trigger mechanism, a flameproof mechanism, an explosion-propagating sequence and the like. During firing, the centrifugal force component along the axis of the centrifugal spool is insufficient to overcome its various resistances along the axis, so the spool is still in the flameproof position. When the projectile flies away from the muzzle, the recoil force is reduced, the centrifugal inertia force is increased, the two ions are compressed under the action of the centrifugal inertia force to fly towards two sides by the centrifugal ion spring, the firing pin is released, and meanwhile, the firing pin with the center of gravity deviated from the projectile shaft rotates around the shaft until one side of the firing pin is propped against the sliding cylinder, and at the moment, the firing pin is aligned with the detonator. After the firing pin assembly is relieved, the sliding column moves under the axial component force of the centrifugal inertia force until the explosion guiding explosive column is aligned with the detonator, so that the detonator is in a priming state. When the target is hit, the whole firing pin assembly compresses the middle safety spring to strike the detonator under the action of the front impact force, and the detonator detonates the projectile after firing. The fuse has insufficient ignition reliability in small falling angles or large landing angles, does not have a floor-scrubbing and frying function, has no redundancy safety characteristic and explosion-proof characteristic, and does not consider the self-destruction function and the fire-insulating function of the fuse.

According to the swedish ancient-turret fuze technical review (detection and control journal, volume 40, 4, pages 34-39) the ammunition fuze for the swedish Karl-ancient-turret antitank weapon system (i.e. 84mm caliber fuze) comprises ZTZ A1 fuze, FFV957 fuze, FFV502 fuze, FFV447 fuze and F/551 fuze. The structure and the action principle are as follows:

ZTZ42A1 gunpowder time fuze is matched with 545B type lighting bullet, and is a time medicine disk bullet fuze, and the fuze firing mode is in-bore inertial needling firing. The explosion-propagation sequence consists of a fire cap, an ignition agent, a delay medicine disk, a medicine column and a propellant. When the projectile is launched, the recoil force enables the hammer to compress the spring of the hammer backwards, the fire cap in the hammer collides with the firing pin, and then the ignition agent ignites the delay powder disc, and the combustion time of the delay powder disc is the flight time of the fuse set distance. The bottom charge then ignites the propellant, which in turn ignites the illumination agent within the cartridge. ZTZ42A1 fuze is a non-flameproof fuze, and has no flameproof property, redundancy safety property and delay release isolation property.

FFV957 warhead trigger fuze was fitted to 469B type of smoke cartridge. The instantaneous explosion-transmitting sequence consists of detonator, explosive guiding and transmitting materials. During firing, the recoil load retracts the recoil pin in the safety and release mechanism, releasing the steel ball, the flange of the safety latch pushes the steel ball out of the way and back, then releasing the slide, and then centrifugal force drives the slide radially outward, releasing the rotor. After the rotor is released, the rotor reaches the arming position by being delayed by the return torque-free escapement under the action of centrifugal force. Centrifugal force also moves the spring safety pins outwards (three are evenly distributed along the circumferential direction), thereby releasing the firing pin. When the large contact angle strikes the target, the firing pin pierces the detonator, and then the detonating tube, the booster tube, the throwing charge and the fuming agent act in sequence. In addition, when the head is directly impacted, the firing pin rod is backflushed towards the firing pin, so that the firing pin rod is used for piercing the detonator. The fuze releases the first safety through the recoil overload environment, releases the second safety through the rotation environment, meets the requirements of explosion isolation, redundancy safety and delay release isolation, and has two action modes of triggering and floor cleaning explosion, wherein the release explosion isolation distance is 20-70 m.

FFV502 primer is matched with 502 type killing and nail breaking dual-purpose explosion-killing bomb. The instantaneous explosion and delay explosion transfer sequences are composed of detonators, explosive guiding and explosive transferring. During firing, propellant gas pushes the pressure piston through the fuse chassis hole, the pressure piston moves the safety pin, then the steel ball moves to the side, simultaneously the escapement lock pin is released, the recoil load and the compressed drive spring push the escapement lock pin downwards, and then the escapement is released, then the torsion spring rotates the rotor, the recoil load continues to push the piston downwards, the spring-loaded push pin in the rotor and the rotor is released, and the rotor drives the piston to block the rotor lock. When the rotor rotates 180 degrees and the squat acceleration disappears, the compression spring pushes the rotor-driven movable body upwards, and the rotor is rotated to the explosion-proof release position through the rotor lock. Therefore, the fuse releases the first safety through a recoil overload environment, and releases the second safety through a rotor lock driven by propellant pressure, and the release safety distance is 16-31 m. The setting of the delay and burst trigger two modes of action depends on the orientation of the charge (180 azimuth difference). The fuze meets the requirements of explosion suppression, redundancy insurance and delay release of explosion suppression, but has no self-destruction and fire insulation functions.

The FFV447 mechanical time/instant trigger fuze is a warhead fuze and is matched with the 441B type explosion-killing bomb. The instantaneous explosion transfer sequence and the delay explosion transfer sequence are composed of a first detonator, a second detonator, an explosion-guiding powder and an explosion-transferring powder. During launching, the recoil load retracts the recoil pin, the ball is released, the outer edge of the safety latch pushes the ball away, the slide is released, and then centrifugal force drives the slide to move radially outwards, so that the rotor is released. And simultaneously, the centrifugal force makes the spring safety pins (three are also uniformly distributed along the circumferential direction) move outwards to release the firing pin. After the rotor is released, the rotor moves to the releasing position after a certain delay through the clockwork under the action of centrifugal force, at the set moment, the hammer excites the first detonator after the clockwork delays, the overpressure of the detonator drives the active body to push down the striking pin to pierce the second detonator, and then the detonating tube, the booster tube and the rest part of the booster sequence act. When the device is instantaneously triggered or used for wiping the ground, the safety and release isolation device impacts the firing pin to trigger the explosion transmission sequence. The first safety of the fuse is a recoil safety, and the second safety is a centrifugal safety. The fuze meets the requirements of explosion suppression, redundancy insurance and delayed explosion suppression, the explosion suppression distance is 20-70 m, and the fuze has no self-destruction and fire insulation functions. The action mode is mechanical timing or instantaneous triggering, can be manually set, but can not ensure the ignition reliability of small falling angle or large falling angle.

The F/551 primer is matched with 551 type armor breaking bomb. The fuse firing mode is electric triggering firing, and the instantaneous explosion transfer sequence consists of an electric detonator and PBXN-5 explosion transfer powder. Two spring-loaded sleeves (squat pins) in the safe state limit the dislocated rotor to the safe position. During firing, the recoil overload causes the two spring-loaded sleeves to retract, releasing the rotor, the rotor rotates 270 degrees to the explosion-proof release position by means of the unlocking springs, and the contact springs cause the contact pieces to press against the electric detonator, so that the firing circuit is closed. When the front or side of the projectile hits the target, the shock wave is transmitted, 5 piezoelectric crystals are extruded, an electric signal is sent to detonate the detonator, then the detonator enables the booster to act, and finally the explosive is detonated. The fuse comprises a bridge rectifier consisting of 4 diodes. When the projectile flies through the brush, the lower voltage generated on the piezoelectric crystal by striking the brush is reduced on the rectifier, so that the voltage transmitted to the electric detonator is insufficient to ignite the electric detonator, thereby realizing the insensitive performance of the fuze, namely the low sensitivity performance. The fuze only utilizes the recoil overload environment to release the safety, the redundant safety requirement is not met, the explosion-proof release distance is only 5-15 m, and the delay explosion-proof release requirement is not met.

In order to know the related technology of the current fuze without the recoil firecracker, selecting the fuze without the recoil firecracker as a search word, and searching 7 non-repeated documents in total from 1 month (the furthest time which can be searched) in 1915 to 11 months in 2023 in a Chinese Network (CNKI) database. In the 7 documents, except for the technical review of the recoil-free firecracker fuse technology of the Swedish ancient Taff (detection and control school report, volume 40, 4, pages 34-39 in 2018), the structure and the action principle of the recoil-free firecracker fuse are not described in the rest documents.

In addition to the fuze described above, the U.S. military standard manual MILs-HDBK-145C ACTIVE FUZE CATALOG (active fuze overview) describes a fuze suitable for use with a recoil-free shell comprising: m503A2 fuze, M509A2 fuze, and M592A1 fuze. Both the M503A2 fuze and the M509A2 fuze are trigger fuzes, and have no distance air frying function; although the M592A1 fuze has a settable mode and can be set to be a delay (timing) or a muzzle 15M function, the fuze is a non-flameproof fuze and has insufficient safety performance. None of the above 3 fuses has the functions of self-destruction and fire insulation.

In a word, the existing fuze without recoil cannon has the problems of low safety degree, poor reliability, difficulty in ensuring the safety of explosive treatment, complex structure, overhigh cost and the like.

Disclosure of Invention

The invention aims to provide an electromechanical detonation fuse of a bottom of a line bore gun with self-destruction and standby triggering functions, which has the functions of redundant safety, explosion suppression, delayed release of explosion suppression, distance air explosion, redundant triggering, redundant self-destruction, fire insulation and the like and is mainly suitable for grenade pellets for line bore non-recoil cannon.

The technical solution of the invention is realized: the electromechanical detonating fuse with self-destruction and standby triggering functions for the bottom of a line bore shell mainly comprises a fuse upper body, a ball seat, an end cover, a gland, a centrifugal safety mechanism, a recoil safety mechanism, an explosion-proof mechanism, a power generation assembly, a power receiving assembly, an electric triggering assembly, a detection and ignition control electronic assembly and an explosion-spreading sequence, wherein the explosion-proof mechanism is positioned in an inner cavity formed by the middle part of the fuse, the ball seat and the fuse upper body; the centrifugal safety mechanism is positioned on the periphery of the upper half part of the fuze and the explosion-proof mechanism; the recoil safety mechanism is positioned in an inner cavity formed by the lower half part of the fuze, the lower part of the explosion-proof mechanism, the ball seat and the end cover; the explosion-proof mechanism and the squat safety mechanism are arranged in a fuse inner cavity formed by the upper fuse body and the body; the power generation assembly, the power connection assembly, the electric triggering assembly and the detection and ignition control electronic assembly are all arranged in an annular cavity formed by the annular groove of the body and the gland; the explosion-propagating sequence is arranged along the axis of the fuze, the middle part is a staggered explosion-proof part, the lower part is a sensitive in-line part, and the upper part is an insensitive part, namely an explosion-propagating pipe. The general structure of the fuse mainly comprises two parts, wherein one part is a mechanical fuse part with the length-diameter ratio close to 2:1 and is mainly positioned in a mechanical fuse inner cavity formed by a fuse upper body and an end cover; the other part is an electromechanical fuze power generation and ignition control part with the length-diameter ratio of approximately 1:2, and is mainly positioned in an annular cavity formed by the annular groove of the body and the gland; the mechanical fuze part is connected with the electromechanical fuze power generation and ignition control part through external threads. The mechanical fuze part is sequentially provided with a detonating tube, a centrifugal safety mechanism, an explosion-proof mechanism and a squat safety mechanism from top to bottom along the fuze axis; the flameproof mechanism has the function of delaying release of flameproof, and the squat safety mechanism has the functions of inertial triggering and centrifugal self-destruction. The explosion-proof mechanism mainly comprises a fuse upper body, an isolating ball, short firing pins, an isolating sleeve, explosion-guiding explosive columns and a ball seat, wherein the isolating ball, the isolating sleeve, the explosion-guiding explosive columns and the two short firing pins form a ball rotor in the explosion-proof mechanism, the isolating sleeve is mainly used for enhancing explosion-proof safety, the two short firing pins ensure ignition correctness of the ball rotor under the condition that the ball rotor is not separated from the positive direction in the positive direction, the explosion-proof mechanism is beneficial to obtaining a longer delay explosion-proof release distance, a radial pressure relief hole and an axial pressure relief channel are formed in the annular side of the ball seat, and the explosion-proof mechanism is beneficial to discharging high-temperature and high-pressure gas generated by accidental ignition of a needle detonator in an explosion-conducting sequence (13), so that explosion-proof safety is ensured. The electromechanical fuze power generation and ignition control part comprises a body, a gland, a power generation assembly, a power connection assembly, an electric triggering assembly, a detection and ignition control electronic assembly, an electric ignition tube and an electric ignition tube seat; ten axial holes are axially distributed in the annular groove of the body, and a first threaded hole, a second stepped through hole, a third stepped hole, a fourth threaded hole, a fifth stepped hole, a sixth threaded hole, a seventh stepped hole, an eighth stepped through hole, a ninth threaded hole and a tenth threaded hole are sequentially formed in the clockwise direction from the twelve o' clock direction; the power generation assembly is arranged in the seventh stepped hole of the body; the two power connection assemblies are respectively arranged in the second step through hole and the eighth step through hole of the body; the electric trigger component is arranged in the third stepped hole of the body; the detection and ignition control electronic component is arranged at the left side of the annular groove of the body, and is respectively connected with a first threaded hole and a ninth threaded hole on the body by two bolts for fixing; after the power generation assembly, the power receiving assembly, the electric triggering assembly and the detection and ignition control electronic assembly are arranged in the body, pouring sealant is used for pouring, and the gland is connected and fixed with a fourth threaded hole, a sixth threaded hole and a tenth threaded hole on the body through three screws; the motor weighting body in the power generation assembly pushes the magnetic recoil generator magnetic core to move downwards under the recoil force so as to generate electric energy; the detection and ignition control electronic component can set the number of shots corresponding to a preset explosion distance and the self-destruction time meeting tactical requirements by a setter of a weapon system before the electric component below the fuze is emitted, and after the detection and ignition control electronic component is emitted, the fixed-distance air explosion of the number of shots is realized by detecting geomagnetic signals, or the timed self-destruction or fire insulation is realized after the preset self-destruction time, or the ignition is triggered by matching with an electric triggering component, and the self-disabling, namely the electric ignition energy dissipation is realized after the fuze is blind. The electric ignition tube is controlled by a detection and ignition control assembly to be ignited by a distance air-explosion, electric triggering or timing self-destruction signal, then the needle detonator is directly detonated, the needle detonator is detonated again, and then the explosion-guiding explosive column in the isolation ball is detonated to detonate the explosion-transmitting tube, if the isolation ball is not rotated, the explosion-proof is not released, the needle detonator is detonated but the explosion-guiding explosive column is not detonated, and the explosion-proof is caused at the moment; if the number of revolutions and the self-destruction time of the spaced-apart bomb pill are not set before the firing or the detection and ignition control assembly fails to control the detonation of the electric ignition tube normally, when the rotation speed of the pill is attenuated to the extent that the centrifugal inertial force of the centrifugal ball is insufficient to support and balance the resistance of an inertial spring in a squatting safety mechanism (7) along the axial constraint counter force generated by the self-destruction inclined plane of the ball seat, the inertial spring pushes a firing body in the squatting safety mechanism (7) to move forwards axially, so that a needle detonator arranged above the firing body impacts a short firing pin below an isolation ball which is subjected to the rotation of the centrifugal inertial force to fire, and the detonator realizes centrifugal self-destruction; after the fuze is de-isolated, before the counting revolution distance is empty and the self-destruction of the electronic timer and the centrifugal self-destruction occur, if the projectile hits the target with a small falling angle or a large falling angle, an inertial trigger switch in the electric trigger assembly is closed by a forward impulse to switch on a circuit, so that the fuze is electrically triggered to fire; if the projectile hits the target or the target area, the firing body carries the centrifugal ball and the needled detonator on the firing body together with the inertia spring to overcome the constraint counter force generated by the centrifugal ball along the self-destruction inclined plane, so that the needled detonator arranged on the firing body impacts the short firing pin under the isolation ball which is rotated by the centrifugal inertia force to fire, and the fuze realizes the standby inertia triggering function.

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

(1) The explosion distance can be finished in advance through the combination of an external electric connection rod component and simple setting operation.

(2) The method meets the requirements of explosion suppression, redundancy safety and delay release of explosion suppression, has the functions of standby redundancy triggering, redundancy self-destruction and fire insulation, and has the advantages of good safety, high reliability and safety in processing of the explosive of the non-explosive bomb.

(3) Simple structure and low cost.

Drawings

Fig. 1 is a front cross-sectional view of an electromechanical initiation fuse of a wire-bore gun bottom with self-destruction and standby triggering functions.

Fig. 2 is a top view of an electromechanical detonation fuse of a bottom of a wire bore shell with self-destruction and standby triggering functions according to the invention.

Fig. 3 is a bottom view of an electromechanical primer fuse for a wire bore shell bottom with self-destruction and backup triggering functions according to the present invention.

FIG. 4 is a cross-sectional view of a line bore gun bottom electromechanical initiation fuse along section A-A with self-destructing and backup triggering functions in accordance with the present invention.

FIG. 5 is a cross-sectional view of a line bore gun bottom electromechanical initiation fuse with self-destructing and backup triggering functions according to the present invention taken along section B-B.

FIG. 6 is a cross-sectional view of a wire-bore gun bottom electromechanical initiation fuse with self-destructing and backup triggering functions according to the present invention taken along section C-C.

FIG. 7 is a cross-sectional view of a wire-bore gun bottom electromechanical initiation fuse with self-destructing and backup triggering functions according to the present invention taken along section D-D.

FIG. 8 is a cross-sectional view of a wire-bore gun bottom electromechanical initiation fuse with self-destructing and backup triggering functions according to the present invention taken along section G-G.

FIG. 9 is a cross-sectional view of an electromechanical initiation fuse of a wire-bore gun bottom with self-destructing and backup triggering functions according to the present invention taken along section H-H.

FIG. 10 is a cross-sectional view of an electromechanical initiation fuse of a wire-bore gun bottom with self-destructing and backup triggering functions according to the present invention taken along section K-K.

In the figure, 1 is a fuse upper body, 2 is a body, 3 is a ball seat, 4 is an end cover, 5 is a gland, 6 is a centrifugal safety mechanism, 7 is a squat safety mechanism, 8 is an explosion-proof mechanism, 9 is a power generation assembly, 10 is a power receiving assembly, 11 is an electric triggering assembly, 12 is a detection and ignition control electronic assembly, 13 is a booster sequence, 14 is a centrifugal cylinder, 15 is a centrifugal cylinder spring, 16 is a stop pin, 17 is a firing body, 18 is a centrifugal ball, 19 is an inertial spring, 20 is a isolation ball, 21 is a short firing needle, 22 is a booster, 23 is a motor weighting body, 24 is a guide sleeve, 25 is a magnetic recoil generator, 26 is an adjusting washer, 27 is a safety disc, 28 is a motor reinforcing seat, 29 is a press screw, 30 is an upper insulating sleeve, 31 is a lower insulating sleeve, 32 is a power receiving rod, 33 is a switch fixing seat, 34 is an inertial triggering switch, 35 is an electric ignition tube, 36 is an electric ignition tube, 37 is a potting adhesive, 38 is a bolt, 39 is a pin detonator, 40 is a booster, 41 is a booster, and 42 is a screw.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by one of ordinary skill in the art without creative efforts, are within the scope of the present invention based on the embodiments of the present invention.

All directional indications (such as up, down, left, right, front, back … …) in embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular pose (as shown in fig. 1), and if the particular pose changes, the directional indication changes accordingly. Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure.

The following describes the specific embodiments, technical difficulties and inventions of the present invention in combination with the present design examples.

Referring to fig. 1 to 10, the electromechanical detonation fuse with self-destruction and standby triggering functions for the bottom of a line bore shell mainly comprises a fuse upper body 1, a body 2, a ball seat 3, an end cover 4, a gland 5, a centrifugal safety mechanism 6, a recoil safety mechanism 7, an explosion-proof mechanism 8, a power generation assembly 9, a power receiving assembly 10, an electric triggering assembly 11, a detection and ignition control electronic assembly 12 and an explosion-propagating sequence 13. The centrifugal safety mechanism 6 is positioned at the upper half part of the fuze; the recoil safety mechanism 7 is positioned in an inner cavity formed by the ball seat 3 and the end cover 4 and is arranged in a fuse inner cavity formed by the fuse upper body 1 and the fuse body 2 together; ten axial holes are circumferentially distributed in the annular groove of the body 2, and a first threaded hole, a second stepped through hole, a third stepped hole, a fourth threaded hole, a fifth stepped hole, a sixth threaded hole, a seventh stepped hole, an eighth stepped through hole, a ninth threaded hole and a tenth threaded hole are sequentially formed in the clockwise direction from the twelve o' clock direction; the power generation assembly 9 is arranged in the seventh stepped hole of the body 2; the two power receiving assemblies 10 are respectively arranged in the second step through hole and the eighth step through hole of the body 2; the electric trigger assembly 11 is arranged in the third stepped hole of the body 2; the detection and ignition control electronic component 12 is arranged on the left side of the ring groove of the body 2 and is respectively connected with a first threaded hole and a ninth threaded hole on the body 2 by two bolts 38 for fixing; after the power generation assembly 9, the power receiving assembly 10, the electric triggering assembly 11 and the detection and ignition control electronic assembly 12 are arranged in the body 2, the power generation assembly, the power receiving assembly, the electric triggering assembly and the detection and ignition control electronic assembly are encapsulated by pouring sealant 37 and are fixedly connected with a fourth threaded hole, a sixth threaded hole and a tenth threaded hole on the body 2 through three screws 41 by a gland 5; the centrifugal safety mechanism 6 comprises a fuse upper body 1, a centrifugal cylinder 14, a centrifugal cylinder spring 16 and a stop pin 16, wherein three stepped holes are uniformly formed in the upper half part of the fuse upper body 1 along the circumferential direction, each stepped hole is sequentially provided with a first stepped hole, a second stepped hole and a third stepped hole from outside to inside, the inside of each stepped hole is sequentially provided with the centrifugal cylinder 14, the centrifugal cylinder spring 15 and the stop pin 16 from inside to outside along the radial direction, the stop pin 16 is fixed in the second stepped hole and the third stepped hole through point riveting or bonding, and the bottom of the centrifugal cylinder 14 is clamped into a preset right-angle groove at the upper part of the isolation ball 20 to realize centrifugal safety; the recoil safety mechanism 7 comprises a ball seat 3, an end cover 4, a firing body 17, a centrifugal ball 18 and an inertia spring 19, wherein the end cover 4 is screwed into the ball seat 3 from bottom to top by means of external threads of the end cover 4, the top of the firing body 17 is jacked into a preset shallow blind hole at the lower part of an isolation ball 20 by the inertia spring 19, recoil safety is implemented on the recoil safety mechanism, 3-7 radial blind holes are uniformly distributed at the upper part of the firing body 17 along the circumferential direction, and a centrifugal ball 18 is arranged in each radial blind hole; the explosion-proof mechanism 8 comprises a fuse upper body 1, a ball seat 3, an isolation ball 20, an isolation sleeve 42, a short firing pin 21 and an explosion-guiding explosive column 22, wherein the short firing pin 21 and the isolation sleeve 42 seal the explosion-guiding explosive column 22 inside the isolation ball 20, and the ball seat 3 fixes the isolation ball 20 in an inner cavity of the fuse upper body 1 in a staggered manner by virtue of a centrifugal safety mechanism 6 and a squat safety mechanism 7; the power generation assembly 9 comprises a motor weighting body 23, a guide sleeve 24, a magnetic recoil generator 25, an adjusting washer 26, a safety disc 27 and a motor reinforcing seat 28, wherein the motor reinforcing seat 28 is arranged at the bottom of a seventh stepped hole of the body 2, the safety disc 27 is positioned above the motor reinforcing seat 28 and is used for supporting a magnetic core of the magnetic recoil generator 25, the adjusting washer 26 is positioned above the safety disc 27 and is used for adjusting and axially fixing a coil of the magnetic recoil generator 25, and the motor weighting body 23 is positioned above the magnetic core of the magnetic recoil generator 25 and is guided by the guide sleeve 24; the power receiving assembly 10 comprises a press screw 29, an upper insulating sleeve 30, a lower insulating sleeve 31 and a power receiving rod 32, wherein the upper part of the power receiving rod 32 is screwed with the press screw 29, the bottom surface of the press screw 29, the middle part of the power receiving rod 32 and the side surface of a stepped through hole of the body 2 are separated and insulated by the upper insulating sleeve 30, and the lower part of the power receiving rod 32 and the side surface of the stepped through hole of the body 2 are separated and insulated by the lower insulating sleeve 31; the electric triggering assembly 11 comprises a switch fixing seat 33, an inertia triggering switch 34, an electric ignition tube 35 and an electric ignition tube seat 36, wherein the inertia triggering switch 34 is fixed with the switch fixing seat through welding or spot riveting and is arranged in a seventh stepped hole of the body 2 together; the explosion transfer sequence 13 is arranged along the axis of the fuze, the middle part of the explosion transfer column 22 is in a dislocation state, the explosion transfer column is positioned in the isolating ball 20, the lower part of the explosion transfer column is provided with an electric ignition tube 35 and a needled detonator 39 which are arranged in a sensitive straight line part, and the upper insensitive part of the explosion transfer column is provided with an explosion transfer tube 40 and is fixed at the top of the fuze upper body 1 by screwing.

Further, the overall structure of the fuse mainly comprises two parts, wherein one part is a mechanical fuse part with the length-diameter ratio close to 2:1 and is mainly positioned in a mechanical fuse inner cavity formed by the upper fuse body 1 and the end cover 4; the other part is an electromechanical fuze power generation and ignition control part with the length-diameter ratio of approximately 1:2, and is mainly positioned in an annular inner cavity formed by the body 2 and the gland 5; the mechanical fuze part is connected with the electromechanical fuze power generation and ignition control part through external threads.

Further, the mechanical fuze part comprises a booster 40, a centrifugal safety mechanism 6, an explosion-proof mechanism 8 and a squat safety mechanism 7 in sequence from top to bottom along the fuze axis; the flameproof mechanism 8 has the function of delaying the release of flameproof, and the squat safety mechanism 7 has the functions of inertial triggering and centrifugal self-destruction. The explosion-proof mechanism 8 mainly comprises a fuse upper body 1, an isolation ball 20, a short firing pin 21, an isolation sleeve 42, an explosion-guiding explosive column 22 and a ball seat 3, wherein the isolation ball 20, the isolation sleeve 42, the explosion-guiding explosive column 22 and the two short firing pins 21 form a ball rotor in the explosion-proof mechanism 8, the isolation sleeve 42 is mainly used for reinforcing explosion-proof safety, the two short firing pins 21 ensure ignition accuracy of the ball rotor under the condition that the direction of rotation is not positive and negative, the ignition accuracy of the ball rotor is ensured, the explosion-proof distance is helped to be relieved by a longer delay, a radial pressure relief hole and an axial pressure relief channel are formed in the annular side of the ball seat 3, and high-temperature and high-pressure gas generated by accidental ignition of the puncture detonator 39 is helped to be discharged, so that the explosion-proof safety is ensured.

Further, the motor weight 23 in the power generation assembly 9 is pressed by the recoil force to drive the magnetic recoil generator core to move downwards so as to generate electric energy; the detection and ignition control electronic component 12 can set the number of shots corresponding to a preset empty distance and the self-destruction time meeting tactical requirements by a setter of a weapon system before the firing through the power receiving component 10 below the fuze, and after the firing, the fixed-distance empty firing of the number of shots is realized by detecting geomagnetic signals, or the timed self-destruction or fire insulation is realized after the preset self-destruction time, or the triggering ignition is realized by matching with the electric triggering component 11, and the self-disabling, namely the electric ignition energy dissipation is realized after the fuze is out of fire.

Further, the electric ignition tube 35 is controlled by the detecting and igniting control assembly 12 to be ignited by a distance empty explosion, electric triggering or timing self-destruction signal, then directly detonates the needle detonator 39, the needle detonator 39 detonates the detonation guiding grain 22 in the isolating ball 20 after being turned right again, and then detonates the detonation transfer tube 40, if the isolating ball 20 fails to be turned right, the explosion isolation is not released, the needle detonator 39 is detonated but does not detonate the detonation guiding grain 22, and at this time, the detonator is insulated.

Further, if the number of revolutions and the self-destruction time of the space bomb pellet are not set before the firing or the detection and ignition control assembly 12 fails to control the ignition of the electric ignition tube 35 normally, when the rotational speed of the bomb is attenuated to the extent that the centrifugal inertial force of the centrifugal ball 20 is insufficient to support and balance the resistance force of the inertial spring 19 along the self-destruction inclined plane of the ball seat 3, the inertial spring 19 pushes the firing body 17 to move forward axially, so that the needled detonator 39 arranged above the firing body 17 impacts the short firing pin 21 below the isolation ball 20 which is rotated under the action of the centrifugal inertial force to fire, and the detonator realizes centrifugal self-destruction.

Further, after the fuze is de-isolated, before the counted number of revolutions and distance of idle explosion, electronic timing self-destruction and centrifugal self-destruction happen, if the projectile hits the target with a small falling angle or a large falling angle, the inertia trigger switch 34 in the electric trigger assembly 11 is closed by the forward impulse to complete the circuit, so that the fuze is electrically triggered to fire; if the projectile has hit the target or target area, the firing body 17 carries the centrifugal ball 20 and the needle detonator 39 thereon, together with the inertial spring 19, against the restraining reaction force generated by the centrifugal ball 20 along the self-destructing slope, so that the needle detonator 39 mounted on the firing body 17 impacts the short firing pin 21 under the isolating ball 20 which has been rotated by the centrifugal inertial force to fire, the needle detonator 39 detonates the explosive grain 22 under the short firing pin 21 and in the isolating ball 20, and then detonates the booster 40, and the detonator achieves the standby inertial triggering function.

The invention has the difficulties that the fuze realizes self-power generation by utilizing a transmission recoil environment, so that the detection and ignition control electronic component normally works, the rotation number counting and distance air explosion function is realized by detecting the geomagnetic signal after transmission through the preset rotation number counting and distance air explosion function of the detection and ignition control electronic component, the flame-proof mechanism has the functions of delaying the release of flame-proof, and has the functions of redundancy safety, redundancy triggering, redundancy self-destruction and flame insulation, the structure is ingenious, the reliability is high, the safety is good, the cost is low, and the flame-proof mechanism is suitable for a line chamber recoil-free cannon grenade with low recoil overload.

Referring to fig. 1 to 10, the principle of the electromechanical detonation fuse of the bottom of the line bore gun with self-destruction and standby triggering functions is as follows:

at ordinary times, the fuze is in a factory assembly state, namely an explosion-proof safety state, the centrifugal cylinder 14 is clamped into a right-angle groove preset above the isolation ball 20 under the action of the pre-pressing resistance of the centrifugal cylinder spring 15, and the isolation ball 20 is locked to form centrifugal safety; the top round table of the firing body 17 is clamped into a shallow blind hole preset below the isolating ball 20 under the action of the pre-pressing resistance of the inertia spring 19, and the isolating ball 20 is locked to form a squat protector; the explosive column 22 in the isolating ball 20 is dislocated with the electric ignition tube 35 and the acupuncture detonator 39, so that the explosion-proof safety is ensured. The explosion-proof mechanism 8 and the redundant safety consisting of the centrifugal safety mechanism 6 and the squat safety mechanism 7 form a safety and isolation release mechanism of the fuze. The fuze cannot be accidentally acted by the fuze due to accidental impact (including falling impact), vibration and external stimulus generated by normal service work. In this state, even if the needle detonator 39 is accidentally fired, the booster 22 and the booster 40 are not detonated. The charges in the explosive column 22 and the detonating tube 40 are permitted explosive guiding and transferring agents JH-14C or JO-9C.

Before firing, the detection and firing control electronics 12 are set with a delay of revolutions by a power-on rod 32 in the power-on module 10 below the fuze to achieve the function of counting revolutions and distance-to-air frying after firing.

During firing, the motor weight 23 in the power generation assembly 9 is moved downward by the recoil environment, thereby forcing the magnetic core of the magnetic recoil generator 25 to move downward through the rupture disc 27, and the electrical energy generated by the relative movement of the magnetic core and coil of the magnetic recoil generator 25 is stored in the detection and firing control electronics assembly 12. Meanwhile, the firing body 17 with 3-7 centrifugal balls 18 inside moves backwards along the axial direction against the resistance of the inertial spring 19 under the action of the recoil environment, so that the round table at the top of the firing body 17 is pulled away from the shallow blind hole at the lower part of the isolation ball 20; the centrifugal ball 18 is thrown out under the action of centrifugal inertial force, is clamped into the self-destruction inclined plane of the ball seat, and the firing body 17 enters a safety release state and is in a centrifugal self-destruction and inertial triggering priming state; the centrifugal barrel 14 moves radially outwards against the resistance of the centrifugal barrel spring 15 under the action of centrifugal inertia force, so that the right lower corner of the centrifugal barrel 14 is pulled out of the right-angle groove at the upper part of the isolating ball 20, and the isolating ball 20 is released. The isolating ball 20 rotates under the action of centrifugal inertia force in the inner cavity of the fuze, after a certain delay (the corresponding projectile row distance is more than 20 m), the explosive guiding explosive column 22 in the isolating ball 20 is aligned with the lower needle detonator 39 and the upper explosion transfer tube 40 respectively, namely, the explosion suppression is released, and the fuze is in a state to be ignited.

The detonator detecting and igniting control electronic assembly 12 records the rotation number of the detonator by detecting geomagnetic signals after the detonator is emitted, when the set time delay rotation number is reached, the detecting and igniting control electronic assembly 12 detonates the electric ignition tube 35, then detonates the needled detonator 39 and the detonating powder column 22 in the isolation ball 20 after the detonator is turned, then detonates the detonating tube 40, finally detonates the main explosive of the bullet, and realizes the fixed-distance air explosion of the rotation number of the detonator.

When the set revolution number or the counting revolution number is not reached and fails, if the fuze hits the target or the target area or the ground, the inertia trigger switch 34 in the electric trigger assembly 11 is closed by the forward impulse force when hitting the target, and transmits a signal to the detection and ignition control electronic assembly 12 to control the detonation electric ignition tube 35, and then the electric trigger function is realized as the following function; or when the object is hit, the firing body 17 overcomes the resistance forward impact of the inertia spring 19, so that the acupuncture detonator 39 arranged at the top of the firing body 17 impacts the short firing pin 21 below the aligned isolation ball 20 to fire, and the subsequent functions are the same as the above, thereby realizing the standby triggering function.

If the fuze does not strike the target when the set revolution or the counting revolution fails, after the preset self-destruction time is reached, the detection and ignition control electronic component 12 detonates the electric ignition tube 35, and the following actions are the same as above, so that the timing self-destruction is realized; or before the preset self-destruction time is reached, when the rotational speed of the projectile is attenuated below the critical rotational speed, and the axial component force generated by the centrifugal force of the centrifugal ball 18 along the self-destruction inclined plane is insufficient to resist the resistance of the inertia spring 19, the inertia spring 19 pushes the firing body 17 to move upwards along the axial direction, so that the acupuncture detonator 39 arranged at the top of the firing body 17 impacts the short firing pin 21 below the isolation ball 20 after being rotated to fire, and then the centrifugal self-destruction function is realized.

The above action process assumes that the fuze has reliably released the flame-proof. If the detonator fails to release the explosion suppression accidentally, the process causes the electric ignition tube 35 and the needled detonator 39 to fire, but does not detonate the detonating powder column 22 and the detonating tube 40, and the detonator sensitive explosive element is detonated accordingly, so that the detonator enters an insulating state. Similarly, the fuse accidentally fires under the condition that the explosion isolation is not relieved, the electric ignition tube 35 and the acupuncture detonator 39 are positioned in the same space formed by the firing body 17 and the electric ignition tube seat 36, the electric ignition tube and the electric ignition tube seat can mutually detonate, the inner space is enough to release the pressure generated by explosion, the explosive column 21 is positioned in the isolation ball 20 in a dislocation state, the energy generated by accidental ignition cannot be transmitted to the explosive column 21, at the moment, the sensitive elements of the fuse all complete energy release, the fuse is in an insulating state, and meanwhile, the safety of processing of the non-explosive is ensured.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. The utility model provides a line bore shell bottom electromechanical detonation fuse with self-destruction and reserve trigger function, mainly includes fuse upper body (1), body (2), ball seat (3), end cover (4), gland (5), centrifugal safety mechanism (6), squatting safety mechanism (7), flame proof mechanism (8), power generation subassembly (9), connect electric subassembly (10), electric trigger subassembly (11), survey and fire control electronic component (12) and pass explosion sequence (13), its characterized in that: the explosion-proof mechanism (8) is positioned in an inner cavity formed by the middle part of the fuze, the ball seat (9) and the upper body (1) of the fuze; the centrifugal safety mechanism (6) is positioned on the peripheral side of the upper half part of the fuze and the explosion-proof mechanism (8); the recoil safety mechanism (7) is positioned below the lower half part of the fuze and the explosion-proof mechanism (8) and in an inner cavity formed by the ball seat (3) and the end cover (4); the explosion-proof mechanism (8) and the squat safety mechanism (7) are arranged in a fuse inner cavity formed by the fuse upper body (1) and the body (2) together; the power generation assembly (9), the power receiving assembly (10), the electric triggering assembly (11) and the detection and ignition control electronic assembly (12) are all arranged in an annular cavity formed by the annular groove of the body (2) and the gland (5); the explosion-propagating sequence (13) is arranged along the axis of the fuze, the middle part is a staggered explosion-isolating part, the lower part is a sensitive in-line part, and the upper part is an insensitive part, namely an explosion-propagating tube (40).

2. The line bore projectile bottom electromechanical primer with self-destruction and backup triggering functions of claim 1, wherein: the general structure of the fuse mainly comprises two parts, wherein one part is a mechanical fuse part with the length-diameter ratio close to 2:1 and is mainly positioned in a mechanical fuse inner cavity formed by a fuse upper body (1) and an end cover (4); the other part is an electromechanical fuze power generation and ignition control part with the length-diameter ratio of approximately 1:2, and is mainly positioned in an annular cavity formed by an annular groove of the body (2) and the gland (5); the mechanical fuze part is connected with the electromechanical fuze power generation and ignition control part through external threads.

3. The line bore projectile bottom electromechanical primer with self-destruction and backup triggering functions of claim 2, wherein: the mechanical fuze part is sequentially provided with a detonating tube (40), a centrifugal safety mechanism (6), an explosion-proof mechanism (8) and a squat safety mechanism (7) from top to bottom along the fuze axis; the flameproof mechanism (8) has the function of delaying the release of flameproof, and the squat safety mechanism (7) has the functions of inertial triggering and centrifugal self-destruction; the explosion-proof mechanism (8) mainly comprises a fuze upper body (1), an isolation ball (20), a short firing pin (21), an isolation sleeve (42), an explosion-guiding explosive column (22) and a ball seat (3), wherein the isolation ball (20), the isolation sleeve (42), the explosion-guiding explosive column (22) and the two short firing pins (21) form a ball rotor in the explosion-proof mechanism (8), the isolation sleeve (42) is mainly used for enhancing explosion-proof safety, the two short firing pins (21) ensure ignition correctness of the ball rotor under the condition that the positive direction is not different from the positive direction, a longer delay release explosion-proof distance is facilitated, a radial pressure relief hole and an axial pressure relief channel are formed in the annular side of the ball seat (3), and high-temperature and high-pressure gas generated by accidental ignition of a needle-punched detonator (39) in a release explosion-conducting sequence (13) is facilitated, so that explosion-proof safety is ensured.

4. A wire bore shell bottom electromechanical primer with self-destruction and backup triggering functions as claimed in claim 3, wherein: the electromechanical fuze power generation and ignition control part comprises a body (2), a gland (5), a power generation assembly (9), a power receiving assembly (10), an electric triggering assembly (11), a detection and ignition control electronic assembly (12), an electric ignition tube (35) and an electric ignition tube seat (36); ten axial holes are axially distributed in the annular groove of the body (2), and a first threaded hole, a second stepped through hole, a third stepped hole, a fourth threaded hole, a fifth stepped hole, a sixth threaded hole, a seventh stepped hole, an eighth stepped through hole, a ninth threaded hole and a tenth threaded hole are sequentially formed in the clockwise direction from the twelve o' clock direction; the power generation assembly (9) is arranged in the seventh stepped hole of the body (2); the two power connection assemblies (10) are respectively arranged in the second step through hole and the eighth step through hole of the body (2); the electric trigger assembly (11) is arranged in the third stepped hole of the body (2); the detection and ignition control electronic component (12) is arranged at the left side of the annular groove of the body (2), and is respectively connected with a first threaded hole and a ninth threaded hole on the body (2) by two bolts (38) for fixing; after the power generation assembly (9), the power receiving assembly (10), the electric triggering assembly (11) and the detection and ignition control electronic assembly (12) are arranged in the body (2), pouring sealant (37) is used for pouring, and the gland (5) is connected and fixed with a fourth threaded hole, a sixth threaded hole and a tenth threaded hole on the body (2) through three screws (41); a motor weighting body (23) in the power generation assembly (9) is pressed by recoil force to push a magnetic recoil generator magnetic core to move downwards so as to generate electric energy; the detection and ignition control electronic component (12) can set the number of shots corresponding to a preset empty distance and the self-destruction time meeting tactical requirements by a setter of a weapon system before transmitting through an electricity receiving component (10) below a fuze, and after transmitting, the number of shots is counted by detecting geomagnetic signals to realize fixed-distance empty explosion, or the timing self-destruction or fire insulation is realized after the preset self-destruction time, or the triggering ignition is realized by matching with an electric triggering component (11), and the self-disabling energy dissipation, namely the electric ignition energy dissipation, is realized after the fuze is out of fire.

5. The line bore projectile bottom electromechanical primer with self-destruction and backup triggering functions of claim 4, wherein: the electric ignition tube (35) is controlled by a detection and ignition control assembly (12) to be ignited under the control of a distance empty explosion, electric triggering or timing self-destruction signal, then the needle detonator (39) is directly detonated, the needle detonator (39) is detonated again, the explosion-guiding explosive column (22) in the isolation ball (20) is detonated again after the isolation ball (20) is righted, then the explosion-guiding explosive column (40) is detonated, if the isolation ball (20) is not righted, namely, explosion isolation is not released, the needle detonator (39) is detonated but the explosion-guiding explosive column (22) is not detonated, and fire insulation is caused at the moment; if the number of revolutions and the self-destruction time of the space bomb pill are not fixed before the explosion or the detection and ignition control assembly (12) fails to normally control the ignition tube (35) to detonate, when the rotation speed of the bomb is attenuated to the extent that the centrifugal inertial force of the centrifugal ball (20) is insufficient to support and balance the resistance force of an inertial spring (19) in a squat safety mechanism (7) along an axial constraint counter force generated by a self-destruction inclined plane of a ball seat (3), a firing body (17) in the squat safety mechanism (7) is pushed by the inertial spring (19) to axially move forward, so that a needle detonator (39) arranged above the firing body (17) impacts a short firing needle (21) below an isolation ball (20) which is rotated by the centrifugal inertial force to fire, and the fuze realizes centrifugal self-destruction; after the fuze is de-isolated, before the counting revolution distance is empty and the self-destruction of the electronic timer and the centrifugal self-destruction occur, if the projectile hits the target with a small falling angle or a large falling angle, an inertia trigger switch (34) in the electric trigger assembly (11) can be closed by the forward impulse to turn on a circuit, so that the fuze is electrically triggered to fire; if the projectile has hit the target or the target area, the firing body (17) carries the centrifugal ball (20) and the acupuncture detonator (39) on the firing body, together with the inertia spring (19), to overcome the constraint counter force generated by the centrifugal ball (20) along the self-destruction inclined plane, so that the acupuncture detonator (39) arranged on the firing body (17) impacts the short firing pin (21) under the isolation ball (20) which is rotated by the centrifugal inertia force to fire, and the fuze realizes the standby inertia triggering function.