CN112325700A - Firing type double-safety post-launching delay ignition device - Google Patents
Firing type double-safety post-launching delay ignition device Download PDFInfo
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- CN112325700A CN112325700A CN202011189840.9A CN202011189840A CN112325700A CN 112325700 A CN112325700 A CN 112325700A CN 202011189840 A CN202011189840 A CN 202011189840A CN 112325700 A CN112325700 A CN 112325700A
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- delay
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A17/00—Safety arrangements, e.g. safeties
- F41A17/64—Firing-pin safeties, i.e. means for preventing movement of slidably- mounted strikers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C15/00—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges
- F42C15/20—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein a securing-pin or latch is removed to arm the fuze, e.g. removed from the firing-pin
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Abstract
The invention discloses a percussion type delay ignition device which mainly comprises a firing pin, an electric pin puller, a smoothbore pin part, a firing pin spring, a state switch, a flexible delay detonating cord of a needle-pricked detonator and the like. The electric pin puller and the slide chamber pin component are two insurance devices, the firing pin is locked at ordinary times to prevent misoperation, and when the firing pin is fired, power is supplied to the electric pin puller from the outside, the electric pin puller acts, and the first restraint on the firing pin is removed; then the firing type delay ignition device is pushed out by the propellant powder in the firing device, and the smoothbore pin component loses the cylinder wall constraint of the firing device after being discharged from the bore, so that the second constraint on the firing pin is removed. The firing pin acts under the thrust action of the state switch and the firing pin spring, the state switch which is associated with the firing pin is switched, and simultaneously, the firing pin pierces the detonator to detonate the flexible delay detonating cord. The invention only acts after leaving the transmitting device, has high safety, and also has the advantages of state detection function and the like.
Description
Technical Field
The invention belongs to the technical field of ignition mechanisms, and particularly relates to a percussion type double-safety post-launching delay ignition device which can only act after leaving a launching device, is high in safety, and has the advantages of a state detection function and the like.
Background
At present, warheads launched based on artillery are generally designed to utilize bore overload to relieve safety in order to ensure safety, and then an inertia closer or a touch switch is designed to detonate the warheads by utilizing impact overload generated by touch after a target is touched.
However, the types of warheads are various, and some warheads require to be exploded above a proper target after being launched in order to achieve a better damage effect. It is clear that the prior art does not fulfill this requirement and that arming by means of an in-bore overload has the disadvantage that arming is to a large extent mistaken in case the warhead falls out of the bore. And the bore overload is related to the amount of the propellant powder, and the amount of the propellant powder is required in order to achieve certain bore overload.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements in the prior art, the invention provides a trigger type double-insurance delay firing device after launching, which only acts after leaving the launching device, has two-stage insurance and acts for a certain time after leaving the launching device, has high safety, and also has the advantages of state detection function and the like.
To achieve the above object, according to one aspect of the present invention, there is provided a firing type dual fail-safe post-firing delay ignition device comprising:
a body, the interior of which is provided with a cavity;
the firing mechanism is arranged in the cavity of the body and used for actuating and firing the initiating explosive device; the firing mechanism comprises a firing pin and a firing pin spring;
the firing locking and unlocking mechanism is carried in the body and used for locking or unlocking the firing mechanism;
the state switch is arranged at the upper end of a firing pin of the firing mechanism and used for detecting the working state of the firing mechanism;
it is characterized in that the triggering locking unlocking mechanism comprises two safety structures, namely,
the electric pin puller is used as a first safety structure and is arranged in parallel with the firing pin, a steel ball is transversely arranged between the electric pin puller and the firing pin, and the movement of the electric pin puller keeps or releases the locking of the steel ball to the ring groove of the firing pin;
the slide chamber pin component is used as a second safety structure and comprises a first slide chamber pin, a locking rod, a second slide chamber pin and a manual locking pin; the firing pin, the first slide chamber pin, the locking rod, the second slide chamber pin and the manual locking pin form four continuous vertical locking and unlocking points in pairs;
and the manual locking pin has a locking state for locking the second slide bore pin before the body is installed into the barrel wall of the launching device; and the manual disassembly state after the firing pin is assembled is realized, one end of the second slide chamber pin, which is deviated from the direction of the locking rod, is blocked by the cylinder wall of the firing device at the moment and still keeps locking the locking rod, and after the body is fired out of the cylinder wall, the vertical locking and unlocking points are sequentially unlocked in a reverse order, and finally the restraint on the firing pin is removed to form firing delay.
Preferably, the front end of the first slide bore pin and the firing ring slot form a first vertical locking and unlocking point.
Preferably, a rear end of the first slide bore pin forms a second vertical lock unlock point with a lower end of the lock rod.
Preferably, the upper end of the locking rod and the front end of the second slide bore pin form a third vertical locking and unlocking point.
Preferably, a rear end of the second slide bore pin and a lower end of the manual locking pin form a fourth vertical locking and unlocking point.
Preferably, the slide bore pin member further comprises a first push spring;
the first push spring is sleeved at the front end of the first smoothbore pin, and separation unlocking thrust is generated between the front end of the first smoothbore pin and the striker ring groove.
Preferably, the slide bore pin member further comprises a second push spring;
the second push spring is sleeved at the lower end of the locking rod, and separated and unlocked thrust is generated between the rear end of the first slide chamber pin and the locking rod.
Preferably, the slide bore pin member further comprises a third push spring;
the third push spring is sleeved at the front end of the second slide chamber pin, and a separating and unlocking thrust is generated between the upper end of the locking rod and the second slide chamber pin.
Preferably, the electric pin puller is one of an electromagnetic pin puller, a gunpowder pin puller and a memory alloy pin puller.
Preferably, the device also comprises a needle-punched detonator and a flexible delay detonating cord;
after the needle-punched detonator is acted by the firing pin, detonation is output to detonate the flexible delay detonating cord, the delay time of the flexible delay detonating cord is up, and the detonating energy is output.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the trigger type double-safety post-launching delay ignition device can only act after leaving the launching device, has two-stage safety and acts for a certain time after leaving the launching device, is high in safety, and has the advantages of state detection function and the like.
2. The triggering type double-safety post-launching delay ignition device is provided with the electric pin puller and the smoothbore pin part as two safeties, and the excitation of the two safeties is the structural characteristics of a power supply system and a launching device respectively, so that the environmental excitation is different, common cause failure cannot be caused, namely the probability of accidentally removing the two safeties simultaneously is low, and the safety is high.
3. The firing type double-safety delayed firing device after firing has the function of acting after being separated from the firing device, and the safety risk of acting in a gun bore is prevented.
4. The trigger type double-safety post-launching delay ignition device and the state switch are arranged, so that the device has a state detection function, the state can be identified, kinetic energy can be provided for the firing pin, and the reliability of the firing pin effect is improved.
Drawings
FIG. 1 is a cross-sectional view of the overall construction of the present invention;
FIG. 2 is a cross-sectional view of another cross-section of the present invention;
FIG. 3 is a schematic diagram of the configuration of the smoothbore pin assembly of the present invention;
FIG. 4 is an exploded view of the status switch of the present invention;
FIG. 5 is a schematic diagram of an initial state structure of a state switch according to the present invention;
FIG. 6 is a schematic diagram of the state switch in-place state structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-2, the present invention provides a firing type dual-safety delayed firing device, which comprises the following detailed structure.
Firing pin 1, by the acupuncture end, big cylinder and little cylinder constitute, the recess that has the slope to constitute on the big cylinder, little cylinder provides the direction for firing pin spring 4.
The firing pin spring 4 is arranged at the upper end of the firing pin 1 and is in a compressed state to provide kinetic energy for the motion of the firing pin 1.
The electric pin puller 2 is the first safety of the firing pin 1, the output end of the electric pin puller 2 is of a stepped cylindrical structure, a lead at the input end is associated with a system power supply, half of the diameter difference between the large cylinder and the small cylinder is larger than the locking amount of the steel ball 7 for locking the firing pin 1, and the electric pin puller 2 can be one of an electromagnetic pin puller, a gunpowder pin puller and a memory alloy pin puller. The electric pin puller 2 is virtual restraint, and mainly overcomes the small friction force of the firing pin when the electric pin puller moves, so that the electric pin puller only needs small acting force, can be designed in a miniaturized mode and has reliable action.
As shown in figure 3, the slide chamber pin part 3 is an interlocking interaction mechanism, locking and conversion are realized at a longer distance, and the slide chamber pin part comprises a first slide chamber pin 3-1, a first push spring 3-2, a second push spring 3-3, a locking rod 3-4, a third push spring 3-5, a second slide chamber pin 3-6 and a manual locking pin 3-7, the slide chamber pin part 3 is a second safety of the firing mechanism 1, the end of a large cylinder of the first slide chamber pin 3-1 is provided with an annular groove, the other end of the large cylinder is a small cylinder, the first push spring 3-2 is sleeved on the small cylinder of the first slide chamber pin 3-1, the locking rod 3-4 is inserted on the annular groove of the first slide chamber pin 3-1, the locking rod 3-4 has the function of safely locking the first slide chamber pin 3-1, the locking rod 3-4 is a stepped cylinder, the second push spring 3-3 is arranged at the bottom, the upper end of the locking rod 3-4 is provided with a second sliding bore pin 3-6, a third push spring 3-5 is nested on the second sliding bore pin 3-6 and used for pushing the second sliding bore pin 3-6, the second sliding bore pin 3-6 is also provided with a manual locking pin 3-7, the manual locking pin 3-7 locks the second sliding bore pin 3-6 normally, the whole sliding bore pin component 3 can be locked, after the sliding bore pin component 3 and the body 11 are arranged in the barrel wall 12 of the launching device, the manual locking pin 3-7 is removed, the second sliding bore pin 3-6 is restrained by the barrel wall 12, the structural form of the sliding bore pin component 3 not only can lock the firing pin 1, but also can transfer the restraint to the tail part of the firing type double-insurance post-firing device, only the firing type double-insurance post-firing device is restrained by the barrel wall 12 of the launching device completely, the insurance is relieved, and the safety is improved; only when the second slide chamber pin 3-6 is separated from the constraint of the cylinder wall 12, the second slide chamber pin moves under the thrust action of the third push spring 3-5 to release the locking of the locking rod 3-4, the locking rod 3-4 moves under the action of the second push spring 3-3 to release the locking of the first slide chamber pin 3-1, and the first slide chamber pin 3-1 moves under the action of the first push spring 3-2 to finally release the constraint of the firing pin 1.
The state switch 5 is shown in fig. 4-6, and mainly plays a role of state indication and provides initial kinetic energy for the firing pin 1; the firing pin needs to reliably fire the acupuncture detonator, enough kinetic energy is needed, and when the distance between the firing pin and the acupuncture detonator is short, the initial force provided by the state switch 5 can be effectively converted into the kinetic energy of the firing pin under the condition that the firing pin can not be fired by a firing pin spring. The method mainly comprises the following steps: the switch comprises a guide pin 5-1 (providing guide for a drive spring and serving as a medium for energy conversion of a switch and a firing pin), a drive spring 5-2 (providing energy for switch conversion), an arc reed 5-3 (equivalent to a moving electrode), a contact 5-4 (equivalent to a static electrode), a reed body 5-5 (used for placing the arc reed and ensuring symmetrical placement of the arc reed), a contact body 5-6 (fixed contact), a switch body 5-7 and a clamp 5-8 (packaging the whole switch together). A cavity is formed in the switch body; the guide pin is longitudinally arranged in a cavity of the switch body, the lower end of the guide pin can extend to be opposite to the upper end of the firing pin, a driving spring is sleeved outside the guide pin in the cavity, and two arc-shaped reeds and contact parts consisting of two groups of contacts and a contact body are symmetrically arranged on two sides of the driving spring; when the firing pin is in a locking position, the firing pin mechanism pushes up the guide pin, the arc reed is compressed, the arc reed is contacted with two contacts at the upper end of the adjacent contact part, and the state switch is in a communication state at the moment; when the firing pin mechanism moves downwards to leave the locking position, the firing pin mechanism is disconnected from contacting with the end face of the guide pin, the driving spring resets, the arc-shaped reed is disconnected from the two contacts at the upper end of the adjacent contact part and is contacted with the two contacts at the lower end of the adjacent contact part, and the state switch is in a disconnected state. In this process, the drive spring in its compressed state provides kinetic energy to the firing pin.
After the needle-punched detonator 6 is acted by the firing pin, detonation is output to detonate the flexible delay detonating cord 8, the delay time of the flexible delay detonating cord 8 is up, and the detonating energy is output.
The steel ball 7 is arranged between the firing pin 1 and the electric pin puller 2, the locking amount of the steel ball 7 for locking the firing pin 1 is 1/6-1/3 of the diameter of the steel ball 7, the firing pin 1 can be reliably locked by the arrangement, and meanwhile, the center of gravity of the steel ball 7 deviates from the firing pin 1, so that the firing pin 1 is more favorable for being pushed to move towards the steel ball 7 on one side.
The steel ball 7 mainly has the advantages that the friction coefficient of the steel ball is small, the steel ball 7 has rolling performance, the force in the vertical direction of the electric pin puller 2 can be conveniently converted into the force in the horizontal direction through the rolling moment, the steel ball 7 can conveniently lock the firing pin 1, and when the firing pin 1 moves downwards, the function of unlocking can be achieved only by extruding the steel ball 7.
The body 11 is used to carry the entire structure.
The large pressing screw 9 is used for fixing the acupuncture detonator 6 and the flexible delay detonating cord 8, and the small pressing screw 10 is used for fixing the electric pin puller 2.
The working principle of the invention is as follows:
after the firing type double-insurance post-launching delay ignition device is installed in the launching device, the manual locking pins 3-7 are removed, the electric pin puller 2 and the smoothbore pin component 3 lock the firing pin 1 to prevent false operation, when in launching, power is supplied to the electric pin puller 2 from the outside, the electric pin puller 2 acts to remove the first restriction on the firing pin 1; then the firing type double-safety post-firing delay firing device is pushed out by the firing powder in the firing device, and the sliding bore pin component 3 loses the cylinder wall constraint of the firing device after going out of the cylinder wall 12, so that the second constraint on the firing mechanism is removed. The firing pin 1 acts under the thrust action of the state switch 5 and the firing pin spring 4, the state switch 5 which is associated with the firing pin is switched, and simultaneously, the needle-punched detonator 6 is fired to detonate the flexible delay detonating cord 8.
In summary, compared with the prior art, the scheme of the invention has the following significant advantages:
1. the trigger type double-safety post-launching delay ignition device can only act after leaving the launching device, has two-stage safety and acts for a certain time after leaving the launching device, is high in safety, and has the advantages of state detection function and the like.
2. The triggering type double-safety post-launching delay ignition device is provided with the electric pin puller and the smoothbore pin part as two safeties, and the excitation of the two safeties is the structural characteristics of a power supply system and a launching device respectively, so that the environmental excitation is different, common cause failure cannot be caused, namely the probability of accidentally removing the two safeties simultaneously is low, and the safety is high.
3. The firing type double-safety delayed firing device after firing has the function of acting after being separated from the firing device, and the safety risk of acting in a gun bore is prevented.
4. The trigger type double-safety post-launching delay ignition device and the state switch are arranged, so that the device has a state detection function, the state can be identified, kinetic energy can be provided for the firing pin, and the reliability of the firing pin effect is improved.
It will be appreciated that the embodiments of the system described above are merely illustrative, in that elements illustrated as separate components may or may not be physically separate, may be located in one place, or may be distributed over different network elements. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
In addition, it should be understood by those skilled in the art that in the specification of the embodiments of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In the description of the embodiments of the invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description. Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the embodiments of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects.
However, the disclosed method should not be interpreted as reflecting an intention that: that is, the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of an embodiment of this invention.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A percussion type dual safety post-launch delay firing device comprising:
a body (11) with a cavity therein;
the firing mechanism is arranged in the cavity of the body (11) and used for actuating and firing the initiating explosive device; the firing mechanism comprises a firing pin (1) and a firing pin spring (4);
the firing locking and unlocking mechanism is carried in the body (11) and is used for locking or unlocking the firing mechanism;
the state switch (5) is arranged at the upper end of a firing pin (1) of the firing mechanism and used for detecting the working state of the firing mechanism;
it is characterized in that the triggering locking unlocking mechanism comprises two safety structures, namely,
the electric pin puller (2) is used as a first safety structure and is arranged in parallel with the firing pin (1), a steel ball (7) is transversely arranged between the electric pin puller and the firing pin (1), and the steel ball (7) is kept or released to lock a firing pin ring groove by the movement of the electric pin puller (2);
the sliding bore pin component (3) is used as a second safety structure and comprises a first sliding bore pin (3-1), a locking rod (3-4), a second sliding bore pin (3-6) and a manual locking pin (3-7); the firing pin (1), the first sliding bore pin (3-1), the locking rod (3-4), the second sliding bore pin (3-6) and the manual locking pin (3-7) form four continuous vertical locking and unlocking points in pairs;
and the manual locking pin (3-7) has a locking state for locking the second slide bore pin (3-6) before the body (11) is installed in the barrel wall (12) of the launching device; and the firing mechanism is in a manual dismantling state after being installed, one end, deviating from the locking rod (3-4), of the second slide chamber pin (3-6) is blocked by the cylinder wall (12) of the firing device and still keeps locking the locking rod (3-4), after the body (11) is fired out of the cylinder wall (12), the vertical locking and unlocking points are sequentially unlocked in a reverse order, and finally constraint on the firing pin (1) is relieved to form firing delay.
2. The percussion, double-safety post-launch delay firing device of claim 1, wherein:
the front end of the first slide bore pin (3-1) and the needle striking ring groove form a first vertical locking and unlocking point.
3. The percussion, double-safety post-launch delay firing device of claim 1, wherein:
the rear end of the first slide chamber pin (3-1) and the lower end of the locking rod (3-4) form a second vertical locking and unlocking point.
4. The percussion, double-safety post-launch delay firing device of claim 1, wherein:
the upper end of the locking rod (3-4) and the front end of the second sliding bore pin (3-6) form a third vertical locking and unlocking point.
5. The percussion, double-safety post-launch delay firing device of claim 1, wherein:
the rear end of the second slide chamber pin (3-6) and the lower end of the manual locking pin (3-7) form a fourth vertical locking and unlocking point.
6. The percussion dual-safety post-firing delay firing device of claim 2, wherein:
the slide bore pin component (3) further comprises a first push spring (3-2);
the first push spring (3-2) is sleeved at the front end of the first sliding bore pin (3-1), and a separating and unlocking thrust is generated between the front end of the first sliding bore pin (3-1) and the striker ring groove.
7. The percussion dual-safety post-firing delay firing device of claim 3, wherein:
the slide bore pin component (3) further comprises a second push spring (3-3);
the second push spring (3-3) is sleeved at the lower end of the locking rod (3-4), and a separating and unlocking thrust is generated between the rear end of the first slide chamber pin (3-1) and the locking rod (3-4).
8. The percussion dual-safety post-firing delay firing device of claim 4, wherein:
the slide bore pin component (3) further comprises a third push spring (3-5);
the third push spring (3-5) is sleeved at the front end of the second sliding chamber pin (3-6), and separated and unlocked thrust is generated between the upper end of the locking rod (3-4) and the second sliding chamber pin (3-6).
9. The percussion, double-safety post-launch delay firing device of claim 1, wherein:
the electric pin puller (2) is one of an electromagnetic pin puller, a gunpowder pin puller and a memory alloy pin puller.
10. The percussion, double-safety post-launch delay firing device of claim 1, wherein:
the device also comprises a needle-punched detonator (6) and a flexible delay detonating cord (8);
after the needle-punched detonator (6) is acted by the firing pin (1), detonation is output to detonate the flexible delay detonating cord (8), the delay time of the flexible delay detonating cord (8) is up, and the detonating energy is output.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011189840.9A CN112325700B (en) | 2020-10-30 | 2020-10-30 | Firing type double-safety delayed firing device after firing |
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| CN202011189840.9A CN112325700B (en) | 2020-10-30 | 2020-10-30 | Firing type double-safety delayed firing device after firing |
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| CN112325700B CN112325700B (en) | 2022-08-05 |
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| CN115265299A (en) * | 2022-08-19 | 2022-11-01 | 南京理工大学 | Centrifugal safety mechanism of small-caliber cannonball warhead trigger fuse acupuncture firing mechanism |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114001587A (en) * | 2021-10-27 | 2022-02-01 | 中北大学 | Delay firing device of non-electric explosion transmission system |
| CN114001587B (en) * | 2021-10-27 | 2023-11-24 | 中北大学 | Delay firing device of non-electric explosion system |
| CN114370794A (en) * | 2021-12-30 | 2022-04-19 | 北京理工大学 | Double-environment fuze device for micro rocket projectile and control method |
| CN114370794B (en) * | 2021-12-30 | 2022-10-04 | 北京理工大学 | Double-environment fuze device for micro rocket projectile and control method |
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| CN115265299A (en) * | 2022-08-19 | 2022-11-01 | 南京理工大学 | Centrifugal safety mechanism of small-caliber cannonball warhead trigger fuse acupuncture firing mechanism |
| CN115265299B (en) * | 2022-08-19 | 2023-06-09 | 南京理工大学 | Centrifugal safety mechanism of small-caliber shell warhead triggering fuze needling ignition mechanism |
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| CN112325700B (en) | 2022-08-05 |
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