CN113551568B - Coil spring type self-failure mechanism applied to high spinning cartridge fuse - Google Patents
Coil spring type self-failure mechanism applied to high spinning cartridge fuse Download PDFInfo
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- CN113551568B CN113551568B CN202110775017.4A CN202110775017A CN113551568B CN 113551568 B CN113551568 B CN 113551568B CN 202110775017 A CN202110775017 A CN 202110775017A CN 113551568 B CN113551568 B CN 113551568B
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- coil spring
- energy
- detonating tube
- gathering
- explosion
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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
- F42C15/22—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 using centrifugal force
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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
- F42C15/21—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 using spring action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42D—BLASTING
- F42D5/00—Safety arrangements
- F42D5/04—Rendering explosive charges harmless, e.g. destroying ammunition; Rendering detonation of explosive charges harmless
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Abstract
The invention discloses a high spinning projectile fuse coil spring type self-failure mechanism which is used for realizing insensitivity and explosive safety treatment and comprises an energy-gathering detonating tube, an explosion-propagating tube and an explosion-stopping mechanism. The energy-gathering detonating tube, the explosion-resisting mechanism and the detonating tube are coaxially arranged in series in the body from top to bottom. The explosion-proof mechanism consists of a seat body, a coil spring and a fastener. The inner end of the coil spring is coiled tightly, accidental explosion propagation of the energy-gathering detonating tube is usually blocked, even if the energy-gathering detonating tube is accidentally exploded under the action of insensitive factors such as high-temperature baking, gunshot, fragment striking or jet impact, the detonating tube can only be combusted but not exploded, and the requirement of insensitive property is met. After the launching, the coil spring is thrown against the inner wall of the seat body, a central channel is left, and the reliable explosion propagation of the energy-gathering detonating tube is ensured. If the detonator is accidentally misfired, when the landing rotation speed of the projectile is attenuated to be close to 0, the coil spring is restored to the assembly state under the elastic action of the coil spring, the detonation passage of the energy-gathering detonating tube is blocked, the detonator is automatically disabled, and the safe treatment of the unexploded explosive explosives is ensured.
Description
Technical Field
The invention belongs to the technology of safe processing of insensitive fuzes and unexplosive explosive explosives, and particularly relates to a coil spring type self-failure mechanism applied to a high-spin-spring fuze.
Background
With the development of modern war, higher requirements are put on the performance of the fuze. According to the standard of GJB373B-2019 fuse safety design criteria, the fuses are required to have explosive treatment characteristics so as to ensure the safety of ammunition explosive treatment. The detonator is a detonating device for explosive charges in the projectile and the warhead, the traditional high-spin projectile detonator has no coil spring type self-failure mechanism, when the detonator is accidentally detonated, the projectile can become an unexploded projectile with poor safety and unstable performance, and a great safety accident can be caused by carelessness in the processes of approaching, digging, transporting, destroying and the like, so that the life safety of operators is threatened, and even the safety and the stability of troops and the society are seriously and negatively influenced. Insensitive ammunition minimizes the extent of reaction and collateral damage to launch platforms, logistics and personnel that may occur when subjected to external attacks, while ensuring that the prescribed performance requirements are met. The fuze is also required to meet the requirement of insensitive ammunition as part of the ammunition composition. In order to solve the technical key problems, domestic researchers make related researches. The method and the device for realizing the fuse self-failure by bonding as described in the Chinese invention patent CN110736397A and the method and the device for realizing the fuse self-failure based on the fixing technology as described in the Chinese invention patent CN110595303A adopt the adhesive bonding to lock the actuating mechanism in the mechanical fuse, thereby realizing the self-failure. However, in the prior art, most ammunition and the fuze thereof are not provided with a self-failure mechanism and have no self-failure function, and the ammunition as an unexplosive has potential safety hazard when being used for processing explosives.
Disclosure of Invention
The invention aims to provide a coil spring type self-failure mechanism applied to a high-spin cartridge detonator, which is used for realizing insensitive characteristics and explosive safety treatment. The explosion-proof mechanism can block an explosion-transmitting channel of the energy-gathering detonating tube to the detonating tube when the ammunition is in a non-ballistic environment, so that the detonator enters a self-failure state to realize the insensitive characteristic of the detonator and the safe processing of the explosive of the unexploded ammunition under the condition of accidental misfire, and has high reliability and small occupied space.
The solution for realizing the purpose of the invention is as follows: a coil spring type self-failure mechanism applied to a high-spin cartridge fuse is arranged in a fuse body and comprises an energy-gathering detonating tube, an explosion-proof mechanism and an explosion-transmitting tube which are coaxially and serially arranged from top to bottom; the explosion-proof mechanism is additionally arranged in front of a detonator explosion-propagating sequence detonating tube, and an energy-gathering detonating tube is additionally arranged behind a detonator explosion-propagating sequence detonator or the original detonating tube is changed into the energy-gathering detonating tube.
The explosion-proof mechanism comprises a seat body, a coil spring and a fastener, wherein the seat body is barrel-shaped, the opening end of the seat body faces the output end of the energy-gathering detonating tube, the coil spring is coiled in a barrel-shaped cavity of the seat body, the inner end of the coil spring is coiled tightly, and the outer end of the coil spring is fixedly connected with the inner side wall of the seat body through the fastener.
Furthermore, the energy-gathering explosion propagation device is applied to the coil spring to normally isolate accidental energy-gathering explosion propagation of the energy-gathering explosion-conducting tube, and even if the energy-gathering explosion-conducting tube is accidentally ignited and exploded under the action of insensitive factors such as high-temperature baking, gunshot, fragment striking or jet impact, the explosion-conducting tube can only burn but not explode at most, so that the requirements of insensitive characteristics and explosive safety treatment are met.
Further, when the coil spring type self-failure mechanism is applied to the traditional right-handed projectile, the winding direction of the coil spring is from outside to inside along the counterclockwise direction when viewed from the warhead direction. Theoretically, when applied to a left-handed projectile, the winding direction of the coil spring is clockwise from the outside to the inside as viewed from the direction of the warhead.
Furthermore, the reinforcing cap of the booster is fixed by riveting the shell of the booster, so that the reinforcing cap is prevented from axially moving.
Furthermore, the output end face of the energy-gathering detonating tube is in an energy-gathering nest shape so as to improve the axial detonating power.
Further, the fastener is a rivet, a pin, a screw or a bolt.
Compared with the prior art, the invention has the remarkable advantages that:
(1) When the explosive is used for insensitive fuze, because the detonating explosive is detonated by the normally isolated detonator, the detonation margin is low, so that the difficulty is high if the detonating explosive is replaced by the insensitive explosive which is more insensitive. The invention can still select the traditional in-line explosive (allowable leading and booster) as the detonating agent, so the design difficulty of the insensitive fuze explosion sequence is reduced.
(2) When the explosion-proof mechanism is used for safely treating explosives, the explosion-proof mechanism realizes the opening and closing of an explosion transfer channel between the energy-collecting detonating tube and the explosion transfer tube by feeling a mechanical environment (a rotating environment) and the characteristics of the explosion-proof mechanism, is a pure mechanical structure, does not need external power supply or high-pressure gas application, and has the advantages of high reliability, small occupied space, light weight, simple structure and low cost.
(3) On the premise of not increasing the complexity of the projectile or the warhead and the fuse structure thereof and only increasing the axial length of the fuse by 5 to 10 mm, the safety of the projectile and the warhead is improved, and the potential safety hidden trouble of explosive treatment of the unexploded ammunition under the condition of the fuze being misfire is solved.
Drawings
Fig. 1 is an axial sectional view of a coil spring type self-disabling mechanism for high spin cartridge fuzes according to the present invention.
Fig. 2 isbase:Sub>A cross-sectional viewbase:Sub>A-base:Sub>A ofbase:Sub>A wrap spring self-defeat mechanism forbase:Sub>A high spin fuse of the present invention in an assembled state.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of the coil spring type self-disabling mechanism applied to the high spin fuze of the present invention inbase:Sub>A flying, or armed, state.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
With reference to fig. 3, a coil spring type self-failure mechanism of a high-spin cartridge detonator for realizing insensitivity and explosive safety treatment is arranged in a detonator body 1, and comprises an energy-gathering detonating tube 2, an explosion-proof mechanism 3 and an explosion-transmitting tube 4 which are coaxially and serially arranged from top to bottom; the explosion-proof mechanism 3 is additionally arranged in front of the detonator detonating sequence detonating tube 4, and simultaneously, the energy-gathering detonating tube 2 is additionally arranged behind the detonator detonating sequence detonator or the original detonating tube is changed into the energy-gathering detonating tube 2.
The explosion-proof mechanism 3 comprises a seat body 33, a coil spring 31 and a fastener 32, wherein the seat body 33 is barrel-shaped, the opening end faces the output end of the energy-gathering detonating tube 2, the coil spring 31 is coiled in the barrel-shaped cavity of the seat body 33, the inner end of the coil spring 31 is coiled tightly, and the outer end of the coil spring is fixedly connected with the inner side wall of the seat body 33 through the fastener 32.
Further, the coil spring 31 normally cuts off accidental energy accumulation and explosion propagation of the energy accumulation detonating tube 2, even if the energy accumulation detonating tube 2 is accidentally ignited and exploded under the action of insensitive factors, the detonating tube 4 can only burn but not explode at most, and therefore the requirements of insensitive characteristics and explosive safety treatment are met.
Further, when the coil spring type self-disabling mechanism is applied to a conventional right-handed projectile, the winding direction of the coil spring 31 is counterclockwise from the outside to the inside as viewed from the warhead direction. Theoretically, when applied to a left-handed projectile, the coil spring 31 is wound in a clockwise direction from the outside to the inside as viewed from the direction of the projectile.
Furthermore, the reinforcing cap of the booster 4 is fixed by riveting the shell of the booster 4, so that the reinforcing cap is prevented from moving axially.
Furthermore, the output end face of the energy-gathering detonating tube 2 is in an energy-gathering socket shape so as to improve the axial detonating power.
Further, the fastener 32 employs a rivet, a pin, a screw, or a bolt.
The working process of the coil spring type self-failure mechanism applied to the high-spin cartridge fuse is detailed as follows:
referring to fig. 1 and 2, in an assembled state, the outer end of the coil spring 31 is fixed to the inner cavity side wall of the seat body 33 by a rivet, a pin, a screw or a bolt, and the inner end of the coil spring 31 is tightly coiled. This condition is maintained during the service process due to the elastic action. The coil spring 31 in the coiled state can cut off the energy-gathering detonation-transmitting jet flow formed when the energy-gathering detonating tube 2 is accidentally ignited, even if the energy-gathering detonating tube 2 is accidentally ignited and exploded under the action of insensitive factors such as high-temperature baking, gunshot, fragment striking or jet impact, the detonating tube 4 can only be combusted but not exploded under the most unfavorable condition, and therefore the requirement of insensitive characteristics is met.
Referring to fig. 3, in the rotating environment formed by normal shot of the projectile, when the fuse rotates and the rotating speed reaches a certain degree, the coil spring 31 is thrown away under the action of centrifugal force, so that the central channel of the explosive energy-collecting jet flow is opened, and the explosion propagation of the energy-collecting jet flow is not hindered. The coil spring 31 is thrown with a time delay and can also perform a delayed fuse release function. The shaped energy jet formed after the shaped energy detonating tube 2 is detonated passes through the explosion shaped jet channel at the center to detonate the booster 4, thereby initiating the warhead charge. If the detonator is accidentally misfired, when the landing rotation speed of the pellet is attenuated to be close to 0, the coil spring 31 is restored to the winding state during assembly under the elastic action of the coil spring, so that the explosion transmission channel of the energy-gathering detonator 2 to the detonator 4 is blocked, the detonator enters a self-failure state, the detonator 4 cannot be detonated even if the energy-gathering detonator 2 is accidentally detonated by a sensitive explosive element in an explosion transmission sequence such as a detonator which is relieved of safety and is in a standby state, the detonator 4 and the subsequent pellet or warhead are all safe, and the explosive of the unexploded pellet can be safely treated. The coil spring 31 can in principle be furled only if the thrust overload and centrifugal overload effect disappears or nearly disappears, i.e. the projectile penetration movement and the rotation movement stop or nearly stop. There is also a time delay for the coil spring 31 to return to the closed condition, so the self-disabling mechanism of the present invention is suitable for both instant and air-burst fuzes as well as delayed fuzes. Short delay fuzes or self-adjusting delay fuzes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a be applied to coil spring formula of high bullet detonator and construct from inefficacy which characterized in that: the coil spring type self-failure mechanism is arranged in the fuse body (1) and comprises an energy-gathering detonating tube (2), an explosion-proof mechanism (3) and an explosion propagating tube (4) which are coaxially and serially arranged from top to bottom; the explosion-proof mechanism (3) is additionally arranged in front of the detonator detonating sequence detonating tube (4), and simultaneously, the energy-gathering detonating tube (2) is additionally arranged behind the detonator detonating sequence detonator or the original detonating tube is changed into the energy-gathering detonating tube (2);
the explosion-proof mechanism (3) comprises a seat body (33), a coil spring (31) and a fastener (32), wherein the seat body (33) is barrel-shaped, the open end of the seat body faces the output end of the energy-gathering detonating tube (2), the coil spring (31) is coiled in a barrel-shaped cavity of the seat body (33), the inner end of the coil spring (31) is coiled tightly, and the outer end of the coil spring is fixedly connected with the inner side wall of the seat body (33) through the fastener (32);
the coil spring (31) usually cuts off accidental energy accumulation and explosion propagation of the energy accumulation detonating tube (2), even if the energy accumulation detonating tube (2) is accidentally fired and exploded under the action of insensitive factors, the detonating tube (4) can only burn but not explode at most, thereby meeting the requirements of insensitive characteristics and safe processing of explosives;
when the coil spring type self-failure mechanism is applied to the traditional right-handed projectile, the winding direction of the coil spring (31) is from outside to inside along the counterclockwise direction when viewed from the warhead direction.
2. The coil spring type self-disabling mechanism for high spin detonator as claimed in claim 1, wherein: the reinforcing cap of the detonating tube (4) is fixed by riveting the shell of the detonating tube (4) to ensure that the reinforcing cap does not axially move.
3. The coil spring type self-disabling mechanism for high spin detonator as claimed in claim 1, wherein: the output end face of the energy-gathering detonating tube (2) is in an energy-gathering nest shape so as to improve the axial detonating power.
4. The coil spring type self-disabling mechanism for high spin detonator as claimed in claim 1, wherein: the fasteners (32) are rivets, pins, screws or bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775017.4A CN113551568B (en) | 2021-07-08 | 2021-07-08 | Coil spring type self-failure mechanism applied to high spinning cartridge fuse |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110775017.4A CN113551568B (en) | 2021-07-08 | 2021-07-08 | Coil spring type self-failure mechanism applied to high spinning cartridge fuse |
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| Publication Number | Publication Date |
|---|---|
| CN113551568A CN113551568A (en) | 2021-10-26 |
| CN113551568B true CN113551568B (en) | 2022-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110775017.4A Active CN113551568B (en) | 2021-07-08 | 2021-07-08 | Coil spring type self-failure mechanism applied to high spinning cartridge fuse |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152156A (en) * | 2021-11-23 | 2022-03-08 | 南京理工大学 | Self-failure device for safety treatment of rotary bomb explosive |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2362987A (en) * | 1940-02-06 | 1944-11-21 | Joseph H Church | Fuse |
| US3516359A (en) * | 1968-01-25 | 1970-06-23 | Junghans Gmbh Geb | Centrifugal spiral band locking device,especially for self-destroying fuzes |
| DE2329944A1 (en) * | 1973-06-13 | 1975-01-02 | Diehl Fa | Flat spiral strip safety device for rotating projectiles - is correctly fitted in the fuse by scanning of a marker |
| FR2429992A1 (en) * | 1978-06-27 | 1980-01-25 | Diehl Gmbh & Co | Missile fuse safety device - has spiral strip wound around core formed by two separate segments surrounding striker pin |
| US4467723A (en) * | 1981-12-24 | 1984-08-28 | Gebruder Junghans Gmbh | Coil strip safety device for spinning projectiles |
| US5147974A (en) * | 1990-11-06 | 1992-09-15 | Motorola Inc. | Unwinding ribbon safing and arming device |
| CN110595303A (en) * | 2019-08-05 | 2019-12-20 | 南京理工大学 | Device and method for realizing fuse self-failure based on fixed technology |
| CN110736397A (en) * | 2019-08-05 | 2020-01-31 | 南京理工大学 | Method and device for realizing fuse self-failure by bonding |
| CN113074593A (en) * | 2021-04-02 | 2021-07-06 | 南京理工大学 | Energy-gathering detonator with insensitive characteristic |
-
2021
- 2021-07-08 CN CN202110775017.4A patent/CN113551568B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2362987A (en) * | 1940-02-06 | 1944-11-21 | Joseph H Church | Fuse |
| US3516359A (en) * | 1968-01-25 | 1970-06-23 | Junghans Gmbh Geb | Centrifugal spiral band locking device,especially for self-destroying fuzes |
| DE2329944A1 (en) * | 1973-06-13 | 1975-01-02 | Diehl Fa | Flat spiral strip safety device for rotating projectiles - is correctly fitted in the fuse by scanning of a marker |
| FR2429992A1 (en) * | 1978-06-27 | 1980-01-25 | Diehl Gmbh & Co | Missile fuse safety device - has spiral strip wound around core formed by two separate segments surrounding striker pin |
| US4467723A (en) * | 1981-12-24 | 1984-08-28 | Gebruder Junghans Gmbh | Coil strip safety device for spinning projectiles |
| US5147974A (en) * | 1990-11-06 | 1992-09-15 | Motorola Inc. | Unwinding ribbon safing and arming device |
| CN110595303A (en) * | 2019-08-05 | 2019-12-20 | 南京理工大学 | Device and method for realizing fuse self-failure based on fixed technology |
| CN110736397A (en) * | 2019-08-05 | 2020-01-31 | 南京理工大学 | Method and device for realizing fuse self-failure by bonding |
| CN113074593A (en) * | 2021-04-02 | 2021-07-06 | 南京理工大学 | Energy-gathering detonator with insensitive characteristic |
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| CN113551568A (en) | 2021-10-26 |
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