CN115355776B - High-reliability small-caliber shell warhead fuze multidirectional triggering comprehensive ignition mechanism - Google Patents

Abstract

The invention discloses a high-reliability small-caliber projectile warhead fuze multi-directional triggering comprehensive ignition mechanism which comprises a double-shaft input needling fire cap, a forward impact triggering needling fire mechanism positioned above the double-shaft input needling fire cap, a front impact-energy storage centrifugal self-destruction needling fire mechanism positioned below the double-shaft input needling fire cap, a side impact collision fire mechanism positioned on the side annular direction of the double-shaft input needling fire cap, and particularly further comprises an upper firing pin, a centrifugal ion, a blocking sleeve, an upper body, a gasket, a support, a safety ring, a lower firing pin, a support, a body, centrifugal beads, a spring and the like. The structure is simple, and the inner cavity space is fully utilized. The three-way ignition mechanism surrounding the dual-axis input needling cap has redundant functions, has the characteristics of rain resistance and dullness under the premise of ensuring service treatment and launching safety, meets the ignition requirements of high triggering sensitivity, large firing angle and small firing angle, improves the comprehensive ignition rate of the fuze, converts the fuze into fire insulation, and reduces the treatment burden of the nonexplosive explosive.

Description

High-reliability small-caliber shell warhead fuze multidirectional triggering comprehensive ignition mechanism

Technical Field

The invention belongs to the small-caliber shell fuse technology, and particularly relates to a high-reliability small-caliber shell warhead fuse multidirectional triggering comprehensive ignition mechanism.

Background

Small caliber cannons generally refer to ammunition having a caliber of 20 millimeters to 40 millimeters that is fired with an artillery and that accomplishes the purposes of killing, blasting, penetration, or other tactical purposes. Most small caliber shells are matched with warheads to mechanically trigger fuzes. Because the projectile is small, the using amount of training and combat is large, the speed attenuation is fast, the difference of the target characteristics of the drop points is large, and the bullet-mesh intersection postures are various, the fuze blind rate is always higher, and the corresponding safety problem of processing the explosive of the non-explosive is always more outstanding. In recent years, serious accidents of accidental casualties of bullet picking personnel or children and even working personnel in a shooting range, caused by accidental explosion of non-explosive drugs left in the shooting range, are frequently caused, so that the requirements of improving the ignition reliability and reducing the non-explosive rate of the small-caliber projectile fuze are increasingly urgent.

The impact trigger firing mechanism of the small caliber projectile warhead mechanical trigger fuze can be divided into three kinds according to whether the safety mechanism is provided.

The first is that the impact type trigger ignition mechanism has no safety mechanism, the first explosion element is in line, mainly the impact type trigger ignition mechanism is widely adopted, and the application practice of the impact type trigger ignition mechanism in more than forty years proves that the explosive treatment performance is excellent, no report that the explosion is caused by accidental ignition of the non-explosive powder left after the ignition of the fuse is present yet, and a typical structure is like a durian-1A fuse (see Mabao hua main code, fuse structure and function, national defense industry publishing agency, first edition of 12 months in 1984, page 31 of figures 3-4). The fuze has high sensitivity, large firing angle, small firing angle and floor mopping, but can not meet the requirements of rain protection and insensitive sensitivity, and is suitable for aviation shell fuzes at present. The small-caliber rotary bullet trigger fuze which is safe for processing explosive after blind fire is the fuze in China patent 202210084491.7.

The second type is that the striking trigger firing mechanism is provided with a safety mechanism, mainly a striking trigger needle-punching firing mechanism, such as German DM301 fuze (see Ma Bao Hua master edition, first edition of national defense industry Press, 12 months of 1984, pages 3-10), american M594 fuze (see Ma Bao Hua master edition, fuze construction and function, first edition of 1984, pages 3-11), american Mk27Mod1 fuze (see Ma Bao Hua master edition, fuze construction and function, first edition of national defense industry press, first edition of 1984, pages 3-14, pages 40, and so on), A-30 fuze (see Ma Bao Hua master edition, fuze construction and function, first edition of national defense industry press, 12 months of 1984, pages 3-16), and so on. The fuze igniting mechanism is easy to add a rainproof mechanism or meet the requirements of rainproof and insensitive sensitivity in structure, but in theory, the igniting reliability is difficult to improve.

The third category is that the impact type triggering ignition mechanism has no special safety mechanism, but the first explosion element is arranged in the explosion-proof mechanism in a staggered way. Typical fuses are Bulbe-37 (see Mabaohua master, fuse construction and action, national defense industry Press, first edition of 12 months in 1984, page 27, FIG. 3-1) and MΓ -8 (see Mabaohua master, construction and action, national defense industry Press, first edition of 12 months in 1984, page 28, FIG. 3-2), MΓ -57 (see Mabaohua master, fuse construction and action, national defense industry Press, first edition of 12 months in 1984, page 30, page 3-3), U.S. M505A3 (see Mabaohua master, fuse construction and action, first edition of 12 months in 1984, page 43, FIGS. 3-17), U.S. FMU-128/B (see Mabaohua master, fuse construction and action, first edition of 12 months in 1984, page 43, FIGS. 3-18), U.S. M758 (see Mabaohua master construction and action, first edition of 12, and first edition of 19, and first edition of 4, 7, and third edition of 4, and third edition of 1984, MR4, first edition of 12, first edition of 21, and third edition of 4. The fuze igniting mechanism is also easy to add a rainproof mechanism or meet the requirements of rainproof and insensitive sensitivity in structure, but the safety of explosive treatment of the nonexplosive is difficult to ensure.

The three types of warhead mechanical triggering fuze impact type triggering mechanisms are all single triggering structures, the ignition reliability is difficult to be greatly improved, and particularly under the premise of comprehensive requirements of rain prevention, insensitive degree, high triggering sensitivity, large-angle ignition, small-angle ignition, floor scrubbing and the like.

Disclosure of Invention

The invention provides a multi-directional triggering comprehensive firing mechanism for a small-caliber projectile warhead fuze, which has the characteristics of high reliability, rain resistance and insensitive sensitivity, and can meet the characteristics of high triggering sensitivity, large firing angle, small firing angle and floor mopping, and is particularly suitable for mechanical triggering fuzes for the warheads of small-caliber antiaircraft guns and vehicle-mounted cannon-grenades.

The technical scheme for realizing the invention is as follows: the utility model provides a high reliability's small-bore shell warhead fuse multi-direction trigger synthesizes firing mechanism, including biax input needle firing cap, be located the forward impact trigger needle firing mechanism of biax input needle firing cap top, be located the forward impact-energy storage centrifugation self-destruction needle firing mechanism of biax input needle firing cap below, be located biax input needle firing cap side annular side impact firing mechanism, concretely include parts such as biax input needle firing cap, upper firing needle, ion, fender cover, upper body, packing ring, support, safety ring, lower firing needle, support, body, centrifugal pearl and spring.

The bi-axial needling input fire cap is positioned in the stepped hole of the upper body, and the bi-axial needling input fire cap is radially provided with a ring groove. The width of the ring groove is smaller than the height of the dual-axial input needling fire cap. The wall thickness between the ring groove and the upper external conical surface is the weak point A. The diameter of the upper firing pin hole is smaller than that of the double-axial input needling fire cap. A right angle point B (a circular hole edge, a point in a certain longitudinal section) is formed at the edge of the upper striker lower orifice ring on the upper body. The gasket is used for axially adjusting the assembly gap and fixing the bi-axial input acupuncture fire cap through the bracket. The safety ring is the safety of the lower firing pin.

The dual-axial input needling fire cap is used as a core: the front upper striking pin is used for realizing forward striking trigger pin to strike fire; the thickness and the material strength of the shearing flange on the firing pin can meet the requirements of rain resistance and insensitive sensitivity; the permanent magnet ions in the annular groove or the blind hole of the side wall of the lower part of the upper firing pin realize the safety when the whole bullet, the projectile or the fuze bare state head falls down, namely, the upper firing pin is prevented from piercing the double-axial input needling cap; the upper end of the striking pin protrudes out of the upper end face of the upper body so as to fully acquire target striking energy and realize high triggering sensitivity; the sharp and slender head part of the upper body (which is necessary for reducing drag of high-speed shots of the ground cannon), the long guide of the upper firing pin in the upper body, the upper end of the upper firing pin protruding out of the upper end surface of the upper body, and the annular end surface of the upper body adjacent to the side of the upper firing pin abutting against the upper end surface of the dual-axial input pin piercing cap to realize large-angle firing, small-angle firing and floor scrubbing frying; the forward trigger ignition is realized by the forward impact action of the lower firing pin below the double-axial input needling helmet (redundant ignition is formed when a target is impacted in the forward direction, a target is impacted in a large angle, a target is impacted in a small angle and the ground is scraped and fried); the self-destruction or fire-proof ignition is realized by the centrifugal self-destruction action of a lower firing pin and an energy storage spring below the biaxial input needling fire cap; the approximate hollow structure of the lower firing pin realizes that the output of the dual-axial input needling fire cap is transmitted to the subsequent flameproof mechanism so as to ignite a flame detonator (not shown in the figure) which is relieved or not relieved of the insurance, and realizes triggering, self-destruction or fire insulation; the dual-axial input needling cap which is in line and is opposite to the orifice boss of the upper body firing pin hole and is not provided with a safety mechanism realizes the essential high-reliability firing and combines with the fire-insulating design, thereby realizing better safety characteristic of the treatment of the non-explosive.

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

(1) The structure is simple, the internal cavity of the fuse is fully utilized, three independent triggering ignition paths of forward impact triggering, backward forward impact triggering-energy storage centrifugal self-destruction and side annular side impact triggering are arranged in parallel, functional redundancy is formed, and the comprehensive ignition reliability of the small-caliber shell fuse is improved on the premise of ensuring service processing and launching safety.

(2) Has the characteristics of rain prevention and insensitive sensitivity, and can meet the characteristics of high triggering sensitivity, large firing angle, small firing angle and floor cleaning and frying.

(3) The explosion-proof mechanism is combined with the detonation and fire-insulating fire-transmitting path design, so that the explosive treatment safety of the non-explosive can be essentially realized, and the explosion-proof mechanism is particularly suitable for small-caliber antiaircraft guns and vehicle-mounted grenades warheads to mechanically trigger fuze

Drawings

Fig. 1 is a front cross-sectional view of an embodiment 1 of a multi-directional triggering integrated firing mechanism for a small caliber projectile warhead fuze of the present invention with high reliability.

Fig. 2 is a front cross-sectional view of an embodiment 2 of a multi-directional triggering integrated firing mechanism for a small caliber projectile warhead fuze of the present invention with high reliability.

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.

It should be noted that all directional indicators (such as up, down, left, right, front, rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the respective components in the corresponding drawings, and if the drawings are changed, the directional indicators are changed accordingly.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to base that the technical solutions can be implemented by those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered to be absent, and not included in the scope of protection claimed in the present invention.

The following describes the specific embodiments and the invention of the present invention in further detail with reference to the present design examples.

Example 1

Referring to fig. 1, a multi-directional triggering comprehensive firing mechanism for a small-caliber projectile warhead fuze with high reliability comprises an upper firing pin 1, a baffle sleeve 2, an upper body 3, a safety ring 4, a support 5, a body 6, a lower firing pin 7, a spring 8, a support 10, a gasket 11, a biaxial input needling cap 12, 4 ions 13 and 4 centrifugal beads 9; the upper body 3 and the body 6 are coaxially arranged, and after the upper part of the body 6 stretches into the lower part of the upper body 3, the upper body and the body are connected through threads to form a fuze shell. The upper firing pin 1, the biaxial input needling cap 12, the gasket 11, the bracket 10, the safety ring 4, the lower firing pin 7 and the support 5 are sequentially arranged in the fuse shell from top to bottom; the pinpoint of the upper pinpoint 1 is downward, the pinpoint of the lower pinpoint 7 is upward, a second-order blind hole with decreasing diameter is formed upward along the bottom surface of the lower pinpoint 7, 4 radial blind holes are formed in the outer side wall of the middle part of the lower pinpoint 7 at equal intervals, and a centrifugal bead 9 is arranged in each radial blind hole. The spring 8 is positioned on the fuze axis and between the blind hole at the lower end of the lower firing pin 7 and the central blind hole at the upper end of the body 3; safety ring 4 is sleeved on the top surface of lower firing pin 7. The upper body 3 is uniformly provided with 4 radial through holes, the centrifugal ions 13 are cylinders, a centrifugal ion 13 is arranged in each radial through hole, the centrifugal ion 13 is used as a centrifugal pin for locking the upper beating pin 1, and the baffle sleeve 2 is sleeved on the outer wall of the upper body 3 and blocks the radial through holes. The bi-axial input acupuncture fire cap 12 is positioned in the stepped hole of the upper body 3 and at the inner hole of the upper needle striking hole of the upper body 3, and a circle of ring grooves are radially arranged along the inner hole of the upper needle striking hole. The width of the ring groove is smaller than the height of the dual-axial input acupuncture fire cap 12. The wall thickness between the ring groove and the outer conical surface of the upper body 3 is the weak point A. The diameter of the upper firing pin hole is smaller than the diameter of the biaxial input fire cap 12. A right angle point B (a circular hole edge, a point in a certain longitudinal section) is formed at the lower orifice ring edge of the upper striker 1 on the upper body 3. The washer 11 is used to axially adjust the assembly gap and secures the bi-axial input acupuncture cap 12 by the bracket 10. The safety ring 4 is the safety of the lower striker 7.

The upper body 3 is made of non-ferromagnetic material such as aluminum alloy, the upper firing pin 1 is made of ferromagnetic material such as medium carbon steel, the centrifuge 13 is made of permanent magnetic material such as bonded NdFeB, and the retaining sleeve 2 is made of non-ferromagnetic material such as aluminum alloy or plastic. The gasket 11 is made of a non-metallic material having a certain elasticity such as paper, plastic or rubber, and is used for filling an axial gap formed by manufacturing errors of the biaxial input acupuncture cap 12 in its residence chamber.

Further, the wall thickness of the point A is adjusted or the material strength of the upper body 3 is changed, and under the premise of ensuring the requirements of vibration, collision, falling, emission and rain collision strength, safety and insensitive degree, the plastic deformation of the point A can be realized when the point A is rubbed against a target with a large landing angle and a small landing angle, so that the point B is impacted or extruded in the axial direction to input the fire cap 12 in a biaxial direction, and the fire is ignited.

In the service processing stage, reliable impact and vibration, including falling, bumping, transportation vibration and the like, can not change the assembly state of the fuze. When the fuze, the projectile or the full-bullet bare state head falls downwards, the upper firing pin 1 can deform or compress due to collision, but the firing tip of the upper firing pin 1 can not touch the upper end face of the biaxial input needle ignition cap 12 due to the safety function of the centrifuge 13. When the fuze, the projectile, the full-bullet bare state or the packaging state transversely falls in a certain direction, the centrifuge 13 can be separated from the upper striker 1 under the action of inertia force, but the centrifuge 13 can be restored to the assembly state under the action of magnetic attraction force along with the end of falling impact. And a reliable lateral drop impact does not cause the safety ring 4 to open. In addition, due to the safety function of the safety ring 4, the lower firing pin 7 cannot touch the lower end face of the biaxial input needling flame cap 12. Therefore, the fuze and the projectile cannot be ignited accidentally, and the safety of the service treatment stage can be ensured.

When the projectile is launched, before the projectile moves to the maximum rifling point, the recoil force of the lower firing pin 7, the spring 8 and the centrifugal beads 9 enables the lower firing pin 7, the spring 8 and the centrifugal beads 9 to move downwards, the spring 8 is compressed, the annular surface at the bottom of the lower firing pin 7 is propped against the bottom plane of the central hole of the body 6, the centrifugal beads 9 are thrown out along the radial hole under the action of centrifugal force, when the projectile moves to approach a muzzle, the rotational speed of the projectile gradually tends to the maximum value, the centrifugal beads 9 clamp the lower firing pin 7 at the position near the recoil bottom through the self-destroying inclined plane at the bottom of the support 5 by the centrifugal force, at the moment, the firing point of the lower firing pin 7 is far away from the biaxial input needling cap 12, and the spring 8 is in a compressed state.

When the projectile moves to approach the muzzle, the two flaps of the safety ring 4 are acted by centrifugal force, and the moment of the force causes the prefabricated weak part of the safety ring 4 to be plastically deformed and spread and be thrown and attached to the inner cavity of the bracket 10 radially outwards, so that the axial movement of the lower firing pin 7 is not limited any more, and the lower firing pin 7 is in a waiting state. When the safety ring 4 releases the safety of the lower firing pin 7, the centrifugal rotor 13 overcomes the magnetic attraction between the upper firing pin 1 and the friction between the upper firing pin 1 and the wall of the upper body 3 under the action of centrifugal force, and the upper firing pin 1 is thrown outwards along the radial direction, so that the axial movement of the upper firing pin 1 is not limited any more, and the upper firing pin 1 is in a waiting state.

When the projectile impacts a soft target in a forward direction, impacts a soft target or a target area such as the ground in a large landing angle, a small landing angle or a ground wiping and frying posture, the target sheet or soil pushes the upper striking pin 1 to move axially to stab and punch the upper end of the biaxial input needling cap 12 so as to fire. The high initial speed characteristic of the small-caliber antiaircraft gun and the vehicle-mounted gun ensures that the shape of the warhead fuze is sharp and long, so that the fuze head triggering area is the upper firing pin 1 which is earlier than the upper body 3, the body 6 and the projectile body of the fuze to touch the target, and the fuze is beneficial to the reliable action in large landing angle, small falling angle or mopping. If this impact trigger fails accidentally, then later before the moment when the projectile head invades the target resistance is maximum, the lower striker 7 together with the centrifugal bead 9 therein and the following spring 8 will also move forward under the combined action of its forward impulse and the pre-compression resistance of the spring 8 to stab the lower end face of the biaxial input pin cap 12 and fire. If the target is strong enough, the upper body 3 can bend or flex at the point A on the upper body no matter in front impact or side impact, so that the point B on the upper body 3 can impact or squeeze the bi-axial input acupuncture fire cap 12 along the axial direction, and the front impact or side impact triggering ignition is realized.

If the above three triggering modes are not all reliable, when the rotating speed of the pellets is attenuated to a certain critical value after the pellets are landed, the centrifugal force generated by the centrifugal beads 9 is insufficient to resist the resistance of the springs 8 along the self-destruction inclined plane of the lower port part of the support 5, the springs 8 push the lower firing pins 7 to move upwards, and meanwhile, the centrifugal beads 9 are gathered into the radial holes of the springs, and the lower firing pins 7 puncture the lower end surfaces of the biaxial input acupuncture fire caps 12 to fire the lower end surfaces. The self-destroying and igniting device has the functions of reducing the explosive, and reducing the explosive treatment workload. If the upper body 3, the body 6 and the support 5 are deformed seriously during the collision with the object, the self-destruction reliability may be lowered due to the structural deformation.

The bi-axial input acupuncture flame cap 12 is a snap-shot flame cap. Therefore, in the process of striking the target by the fuse, the ignition and the fire transmission processes are faster, and according to experience, the fuse is not obviously influenced by the deformation of the upper body 3. In the process of the fuse hitting the target, if the deformation of the upper body 3 is small, the three-way ignition mechanism is not obviously affected. If the deformation is large, the side-impact collision ignition mechanism in the side-loop direction fires reliably, and the forward-impact collision triggering ignition mechanism may be already fired before.

The fire transmission of the fire cap is different from the explosion transmission, and the slight deformation of the structure has no obvious influence on the reliability of the fire transmission.

If self-destroying ignition is calculated, the fuze of the invention has four ignition modes. Either firing mode, the result is a dual axial input acupuncture flame cap 12 firing. After the biaxial input needle-punched cap 12 fires, weak detonation and flame are output at the lower end face, the firing pin tip of the lower firing pin 7 is broken up, and the central fire transmission channel of the lower firing pin 7 is blasted, so that the flame of the biaxial input needle-punched cap 12 is output to the flame detonator input end below the spring 8 and in the explosion-proof piece in the body 6, and the flame detonator is detonated. Regardless of the state of the flameproof member, whether the flameproof member is in an assembled state or a disarmed state or in an intermediate state between the assembled state and the disarmed state, the flameproof member and the flameproof mechanism are designed to ensure that the flame detonator can be detonated therein. If the flameproof piece is in the state of releasing the insurance, the fuze is normally ignited; if the fuse is in a non-disarmed state, the fuse enters an insulated state, so that the safety of explosive treatment can be ensured. The flameproof member, the flame detonator and the flameproof mechanism are prior art and are not shown in fig. 1.

The structure and the medicament of the biaxial input needling fire cap 12 are not substantially different from those of the traditional fire cap, and the normal ignition failure rate of the biaxial input needling fire cap is less than one thousandth, so that the improvement of the reliability of the fuze is not influenced even if the four ignition modes of the fuze share the biaxial input needling fire cap 12.

Example 2

Referring to fig. 2, a difference between the embodiment 2 and the embodiment 1 of the multi-directional trigger firing mechanism of the small caliber bullet fuze with the explosive treatment characteristic is the shape of the centrifuge 13 and the corresponding shape of the blind hole or the ring groove on the upper firing pin 1. The action principle is the same. The shape of the centrifuge 13 in example 2 is a sphere, i.e., a centrifuge sphere, and the shape of the cross section of the constraint blind hole or annular groove on the upper striker 1 corresponding to this sphere along the fuze axis is approximately hemispherical or rectangular, and the depth of the blind hole or annular groove should be greater than the radius of the centrifuge sphere 13 but less than two-thirds of the diameter of the centrifuge sphere 13. The movement of the centrifugal ball 13 includes rolling and sliding, no movement-guiding design is required, and the movement is more reliable. The centrifugal ball 13 is a one-dimensional structural part, and is convenient to process, guarantee quality and assemble. Therefore, the centrifugal ball is used for replacing the centrifugal pin as a centrifugal ion, which is beneficial to simplifying the structure, reducing the cost and improving the reliability.

Claims (5)

1. The utility model provides a high reliability's small-bore shell warhead fuse multidirectional triggering comprehensive firing mechanism which characterized in that: comprising the steps of (a) a step of,

the body (6) and the upper body (3) above the body and screwed with the body form a fuse shell for accommodating other structures;

the structural part positioned in the fuze shell comprises a support (5) and a bracket (10);

a biaxial input acupuncture flame cap (12) positioned by a bracket (10) and an upper body (3);

a forward impact trigger acupuncture ignition mechanism positioned above the dual-axial input acupuncture fire cap (12);

a front punch-energy storage centrifugal self-destroying needling ignition mechanism positioned below the biaxial input needling hood (12);

a side-impact collision ignition mechanism positioned on the side of the double-axial input needling helmet (12);

the three paths of ignition mechanisms jointly form a fuze multidirectional triggering comprehensive ignition mechanism, the functions are redundant, the structures are basically independent, the double-axial input acupuncture fire cap (12) is used as an explosion element, and the fuze can ignite as long as one path of ignition mechanism ignites, so that the comprehensive ignition reliability is improved;

the forward impact trigger needling ignition mechanism comprises an upper firing pin (1), a centrifuge (13) and a retaining sleeve (2); the upper body (3) is made of non-ferromagnetic material, the upper firing pin (1) is made of ferromagnetic material, the centrifuge (13) is made of permanent magnetic material, the retaining sleeve (2) is made of non-ferromagnetic material, and the retaining sleeve is sleeved on the outer side wall of the upper body (3); in the assembled state, the centrifuge (13) is clamped into the annular groove or the blind hole of the upper firing pin (1) under the magnetic attraction action of the upper firing pin (1) to ensure the upper firing pin, so that the upper firing pin (1) is prevented from penetrating into the biaxial input needle-punched cap (12) to fire when the fuze or the bullet or the full bullet falls down accidentally; when the projectile flies near the muzzle in normal launching, the centrifuge (13) can be thrown outwards against the magnetic attraction of the upper firing pin (1) under the action of centrifugal force, and the upper firing pin (1) is released to release the safety;

the side-impact collision ignition mechanism comprises an upper body (3), a double-axial input needling helmet (12) and a bracket (10); the wall thickness between the ring groove and the external conical surface of the upper body (3) is a weak point A, a straight angle point B is formed at the lower orifice ring edge of the upper firing pin (1) on the upper body (3), the diameter of the ring groove is adjusted so as to adjust the wall thickness at the point A on the upper body (3), and under the premise of guaranteeing the requirements of vibration, collision, falling, emission and rain structure strength, safety and sensitivity, the point A on the upper body (3) is plastically deformed when the target is hit with a large landing angle, a small landing angle and ground wiping, so that the point B on the upper body (3) is impacted or extruded in the axial direction to input the acupuncture fire cap (12) in the biaxial direction, and side impact and ignition are realized;

the high-reliability small-caliber shell warhead fuze multidirectional triggering comprehensive ignition mechanism further comprises a safety ring (4), a down firing pin (7), a spring (8), a bracket (10), a gasket (11) and 4 centrifugal beads (9); the upper firing pin (1), the double-axial input needling cap (12), the gasket (11), the bracket (10), the safety ring (4), the lower firing pin (7) and the support (5) are sequentially arranged in the fuse shell from top to bottom; the pinpoint of the upper pinpoint (1) is downward, the pinpoint of the lower pinpoint (7) is upward, a second-order blind hole with decreasing diameter is formed upward along the bottom surface of the lower pinpoint (7), 4 radial blind holes are formed in the outer side wall of the middle part of the lower pinpoint (7) at equal intervals, and a centrifugal bead (9) is arranged in each radial blind hole; the spring (8) is positioned on the fuze axis and is positioned between the blind hole at the lower end of the lower firing pin (7) and the central blind hole at the upper end of the body (6); the safety ring (4) is sleeved on the top surface of the lower firing pin (7); 4 radial through holes are uniformly distributed on the upper body (3), the centrifugal ions (13) are cylinders, one centrifugal ion (13) is arranged in each radial through hole, the centrifugal ion (13) is used as a centrifugal pin for locking the upper beating pin (1), and the blocking sleeve (2) is sleeved on the outer wall of the upper body (3) and blocks the radial through holes;

in the service processing stage, reliable impact and vibration, including falling, bumping and transportation vibration, cannot change the assembly state of the fuze; when the fuze or the projectile or the full-bullet bare state head falls down, the upper firing pin (1) can deform or compress due to collision, but the firing pin point of the upper firing pin (1) can not touch the upper end surface of the bi-axial input needling cap (12) due to the safety function of the centrifuge (13); when the fuze or the projectile or the full-bullet bare state or the packaging state transversely falls in a certain direction, the centrifuge (13) can be separated from the upper striking pin (1) under the action of inertia force, but the centrifuge (13) can be restored to the assembling state under the action of magnetic attraction force along with the end of falling impact; the reliable transverse falling impact does not open the safety ring (4); in addition, due to the safety function of the safety ring (4), the lower firing pin (7) cannot touch the lower end face of the biaxial input needling cap (12); therefore, the fuze and the projectile cannot be ignited accidentally, and the safety of the service treatment stage can be ensured;

when the projectile is launched, before the projectile moves to the maximum rifling point, the recoil force of the lower firing pin (7), the spring (8) and the centrifugal beads (9) enables the lower firing pin (7), the spring (8) and the centrifugal beads (9) to move downwards, the spring (8) is compressed, the bottom ring surface of the lower firing pin (7) is abutted against the bottom plane of the central hole of the body (6), the centrifugal beads (9) are thrown out along the radial direction under the action of centrifugal force, when the projectile moves to approach to a muzzle, the rotational speed of the projectile gradually tends to the maximum value, the centrifugal beads (9) clamp the lower firing pin (7) at a waiting position close to the recoil bottom through a self-destruction inclined plane at the bottom of the support (5), at the moment, the firing point of the lower firing pin (7) is far away from the biaxial input needle to fire cap (12), and the spring (8) is in a compressed state;

when the projectile moves to approach to the muzzle, the two flaps of the safety ring (4) are acted by centrifugal force, and the moment of the force causes the prefabricated weak part of the safety ring (4) to plastically deform and spread and be thrown and leaned against the inner cavity of the bracket (10) along the radial direction, so that the axial movement of the lower firing pin (7) is not limited any more, and the lower firing pin (7) is in a waiting state; when the safety ring (4) releases the safety of the lower firing pin (7), the centrifugal rotor (13) overcomes the magnetic attraction between the upper firing pin (1) and the friction between the upper firing pin and the hole wall of the upper body (3) under the action of centrifugal force, and the upper firing pin (1) is thrown outwards along the radial direction, so that the axial movement of the upper firing pin (1) is not limited any more, and the upper firing pin (1) is in a waiting state;

when the projectile impacts a soft target in a forward direction, impacts the soft target or a target area such as the ground in a large landing angle, a small landing angle or a ground scraping and frying posture, the target plate or soil pushes the upper striking pin (1) to axially move to stab and punch the upper end of the biaxial input needling cap (12) so as to fire; the high initial speed characteristic of the small-caliber antiaircraft gun and the vehicle-mounted gun ensures that the shape of the warhead fuze is sharp and long, thereby being beneficial to the contact of the upper firing pin (1) with the targets of the upper body (3), the body (6) and the projectile body of the fuze before the upper firing pin (1) is started, and being beneficial to the reliable action in large landing angle, small landing angle or mopping; if the impact triggering function fails accidentally, the lower firing pin (7), the centrifugal beads (9) therein and the following springs (8) move forwards under the combined action of the front impact force and the pre-pressing resistance of the springs (8) to puncture the lower end face of the biaxial input acupuncture fire cap (12) and fire later before the moment that the projectile head invades the target resistance is maximum; if the target is strong enough, the upper body (3) can bend or flex and deform at the point A on the upper body no matter the target is impacted in the front or in the side direction, so that the point B on the upper body (3) impacts or extrudes the bi-axial input acupuncture fire cap (12) along the axial direction, and the front impact or the side impact is triggered to fire;

if all three triggering modes fail to reliably act, when the rotating speed of the shot is attenuated to a certain critical value after the shot falls to the ground, the centrifugal force generated by the centrifugal beads (9) is insufficient to resist the resistance of the springs (8) along the self-destruction inclined planes of the lower port parts of the supports (5), the springs (8) push the lower firing pins (7) to move upwards, meanwhile, the centrifugal beads (9) are gathered into radial holes of the springs, and the lower firing pins (7) puncture the lower end surfaces of the biaxial input pin piercing caps (12) to fire; the self-destroying and igniting device has the functions of reducing the explosive which is not detonated and reducing the explosive treatment workload; if the upper body (3), the body (6) and the support (5) are severely deformed in the process of touching the target, the self-destruction reliability may be reduced due to structural deformation.

2. The high reliability small caliber projectile warhead fuze multidirectional triggering integrated firing mechanism as claimed in claim 1, wherein: the gasket (11) is made of elastic nonmetallic materials and is used for filling an axial gap formed by manufacturing errors of the biaxial input acupuncture flame cap (12) in a residence chamber of the gasket, axially fixing the biaxial input acupuncture flame cap (12), preventing the biaxial input acupuncture flame cap from axially bouncing, and reducing adverse effects on triggering ignition reliability.

3. The high reliability small caliber projectile warhead fuze multidirectional triggering integrated firing mechanism as claimed in claim 1, wherein: the centrifugal pin (13) is in a pin shape and is used as a centrifugal pin to be arranged along the fuze radial direction.

4. The high reliability small caliber projectile warhead fuze multidirectional triggering integrated firing mechanism as claimed in claim 1, wherein: the structure of the centrifuge (13) is spherical, namely a centrifugal sphere.

5. The high reliability small caliber projectile warhead fuze multidirectional triggering integrated firing mechanism as claimed in claim 4, wherein: the depth of the blind hole or the ring groove which is radially arranged at the lower end of the upper striking pin (1) and used for accommodating the centrifugal ball is larger than the radius of the centrifugal ball and smaller than two thirds of the diameter of the centrifugal ball.