CN113670143A - Beam type recoil safety mechanism for letter-guiding board - Google Patents
Beam type recoil safety mechanism for letter-guiding board Download PDFInfo
- Publication number
- CN113670143A CN113670143A CN202110828821.4A CN202110828821A CN113670143A CN 113670143 A CN113670143 A CN 113670143A CN 202110828821 A CN202110828821 A CN 202110828821A CN 113670143 A CN113670143 A CN 113670143A
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- Prior art keywords
- plate
- recoil
- safety mechanism
- fuse
- explosion
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Classifications
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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
- F42C15/005—Combination-type safety mechanisms, i.e. two or more safeties are moved in a predetermined sequence to each other
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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
- F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
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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
- F42C15/24—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means
- F42C15/26—Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges wherein the safety or arming action is effected by inertia means using centrifugal force
Abstract
The invention discloses a beam type recoil safety mechanism of a fuse board, which comprises a seat body and a board beam. The plate beam is arranged in the stepped hole of the seat body. When the recoil safety mechanism is used for the safety mechanism of the explosion-proof mechanism, the plate beam can be used as an explosion-proof piece to isolate a sensitive explosion element in an explosion sequence from a next-stage in-line explosion-sensing element. When the shot is shot, the plate beam is overloaded by the recoil to generate axial plastic deformation, so that the safety of the protected piece is relieved; when the projectile falls down in the service treatment stage, the recoil overload is not enough to cause obvious plastic deformation of the plate beam, and the fuse is still in a safety state. The fuse plate beam type recoil safety mechanism provided by the invention has the advantages of simple structure, small volume, low cost and reliable action, can effectively reduce the axial size of the fuse, and is particularly suitable for the fuse of a vertical rotor or ball rotor mechanism of small-caliber shots in a high-launching overload environment.
Description
Technical Field
The invention belongs to the fuze technology, and particularly relates to a beam type recoil safety mechanism of a fuze board.
Background
The traditional recoil safety mechanism mainly comprises a linear motion safety mechanism and an inertia braking safety mechanism, but the two safety mechanisms usually occupy larger fuse space. For small-caliber projectiles, the fuse cavity volume is small, and the internal space is not enough to install the traditional recoil safety mechanism. The ball rotor mechanism is small in size and has been widely applied to small-caliber projectile fuzes, and the split ring is a typical centrifugal safety mechanism of the ball rotor mechanism.
The "design criteria for fuze safety" standard requires that the fuze have at least two separate insurance components that are to be unsecured from different environments. It is therefore necessary to provide the small caliber projectile fuze with a recoil safety mechanism that occupies less space.
Disclosure of Invention
The invention aims to provide a fuse plate beam type recoil safety mechanism which occupies small size of a fuse inner cavity and is suitable for small-caliber rotary projectile fuses, in particular to a ball rotor or vertical rotor mechanism.
The technical solution for realizing the purpose of the invention is as follows: a beam type recoil safety mechanism for a fuse board comprises a board beam and a seat body, wherein a step hole is formed in the seat body along the central axis direction, and the board beam is arranged in the step hole and is fixed through the closing of the seat body.
Further, the plate girder is in a shape of a circular sheet, a circular ring or a rectangular sheet.
The fuse board beam type recoil safety mechanism further comprises a check ring, the check ring is arranged in the stepped hole and stacked with the board beam, and the board beam is axially limited through the check ring.
Further, the plate girder is in a cylinder shape with one closed end.
Further, the plate beam type recoil safety mechanism is suitable for a high-launch overload small-caliber rotary bullet fuse, in particular to a ball rotor mechanism or a vertical rotor mechanism thereof.
According to the specific structural layout, the plate beam is used as an explosion-proof piece to isolate the sensitive explosion element in the explosion sequence from the next level of in-line explosion-sensitive element.
When the plate beam is launched, the plate beam is overloaded by the recoil to generate unrecoverable plastic deformation, and the insurable piece is released to relieve the insurance; in the service handling period, even if the plate beam falls accidentally, the plate beam is subjected to the action of falling overload, the generated elastic deformation is small, and the safety piece is still in a safety state.
Compared with the prior art, the invention has the following remarkable advantages:
(1) simple structure, small occupied space and low cost.
(2) The safety is high.
(3) If the fuse explosion-proof mechanism and the explosion-proof performance design can be combined, the structure can be further simplified, the space is saved, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural view of a letter-guiding plate beam type recoil safety mechanism with a large end of a stepped hole arranged below a seat body and a plate beam limited by a retainer ring.
Fig. 2 is a schematic structural view of a fuse board beam type recoil safety mechanism of the invention, wherein the big end of a stepped hole is arranged above a seat body, and a plate beam is limited by a check ring.
Fig. 3 is a schematic structural view of a beam type recoil safety mechanism of a fuse board, which is provided with a large end of a stepped hole below a seat body and adopts a support cylindrical plate beam.
Fig. 4 is a schematic structural view of a beam type recoil safety mechanism of a fuse board, which is provided with a large end of a stepped hole above a seat body and adopts a support cylindrical plate beam.
FIG. 5 is a schematic structural view of a fuse board beam type recoil safety mechanism of the present invention, in which the big end of the stepped hole is arranged below the seat body and the sheet beam is riveted through the seat body.
FIG. 6 is a schematic structural view of a fuse board beam type recoil safety mechanism of the present invention, in which the big end of the stepped hole is arranged above the seat body and the sheet-shaped plate beam is riveted through the seat body.
Fig. 7 is a schematic view of a small caliber fuse structure using a fuse panel beam recoil safety mechanism of the present invention.
Detailed Description
The present invention is described in further detail below with reference to the attached drawing figures.
Because the internal space of the small-caliber pellet fuse is small, the traditional recoil safety mechanism cannot be installed, and the requirement of fuse redundancy safety is difficult to meet. The structure of the invention is adopted in the small-caliber pellet fuze, so that the design requirement of fuze redundancy insurance can be realized, and the internal space of the fuze is basically not occupied.
As shown in fig. 1, the beam type recoil safety mechanism of the letter box of the present invention is composed of a plate beam 1, a retainer ring 2 and a seat body 3. The plate girder 1 can be designed into a round sheet shape, a circular ring shape or a rectangular sheet shape; the seat body 3 is provided with a second-order stepped hole along the direction of the central shaft, and the first-order stepped hole and the second-order stepped hole are sequentially arranged from top to bottom, and the first stepped hole is smaller than the second stepped hole. The plate girder 1 is arranged in the second stepped hole, the retainer ring 2 is arranged below the plate girder 1, and the plate girder 1 is axially limited by fixing the retainer ring 2 through the riveting base body 3. The stepped hole shape in the seat body 3 can be designed into a circular hole and a rectangular hole according to the shape of the plate girder 1.
As shown in fig. 2, the beam type recoil safety mechanism of the letter box of the present invention is composed of a plate beam 1, a retainer ring 2 and a seat body 3. The plate girder 1 can be designed into a round sheet shape, a circular ring shape or a rectangular sheet shape; the seat body 3 is provided with a second-order stepped hole along the direction of the central shaft, and the first-order stepped hole and the second-order stepped hole are sequentially arranged from top to bottom, and the first stepped hole is larger than the second stepped hole. The plate girder 1 is arranged in a first stepped hole in the base body 3, the retainer ring 2 is arranged above the plate girder 1, and the plate girder 1 is axially limited by fixing the retainer ring 2 through the riveting base body 3. The stepped hole shape in the seat body 3 can be designed into a circular hole and a rectangular hole according to the shape of the plate girder 1.
As shown in fig. 3, the beam type recoil safety mechanism of the letter box of the present invention is composed of a plate beam 1 and a seat body 3. The plate beam 1 is a support cylinder with one closed end, the seat body 3 is provided with a second-order stepped hole along the central shaft direction, the first-order hole and the second-order hole are sequentially arranged from top to bottom, and the first stepped hole is smaller than the second stepped hole. The plate girder 1 is arranged in a second stepped hole of the base body 3, the closed end faces upwards, the annular outer wall surface of the plate girder is attached to the inner portion of the stepped hole, and the open end of the plate girder 1 is riveted and fixed by the base body 3.
As shown in fig. 4, the beam type recoil safety mechanism of the letter box of the present invention is composed of a plate beam 1 and a seat body 3. The plate girder 1 is a support cylinder with one end closed, the seat body 3 is provided with a second-order stepped hole along the direction of the central shaft, the first-order hole and the second-order hole are arranged from top to bottom in sequence, and the first-order hole is larger than the second-order hole. The plate girder 1 is arranged in a second stepped hole of the base body 3, the closed end faces upwards, the annular outer wall surface of the plate girder is attached to the inner portion of the stepped hole, and the open end of the plate girder 1 is riveted and fixed by the base body 3.
As shown in fig. 5, the beam type recoil safety structure of the letter box of the present invention is composed of a plate beam 1 and a seat body 3. The plate girder 1 can be designed into a round sheet shape, a circular ring shape or a rectangular sheet shape; the seat body 3 is provided with a second-order stepped hole along the direction of the central shaft, and the first-order stepped hole and the second-order stepped hole are sequentially arranged from top to bottom, and the first stepped hole is smaller than the second stepped hole. The plate girder 1 is arranged in a second stepped hole of the seat body 3, and the plate girder 1 is riveted and fixed by the seat body 3. The stepped hole shape in the seat body 3 can be designed into a circular hole and a rectangular hole according to the shape of the plate girder 1.
As shown in fig. 6, the beam type recoil safety structure of the letter plate of the invention is composed of a plate beam 1 and a seat body 3. The plate girder 1 can be designed into a round sheet shape, a circular ring shape or a rectangular sheet shape; the seat body 3 is provided with a second-order stepped hole along the direction of the central shaft, and the first-order stepped hole and the second-order stepped hole are sequentially arranged from top to bottom, and the first stepped hole is larger than the second stepped hole. The plate girder 1 is arranged in the first step hole of the seat body 3 and is riveted and fixed by the seat body 3. The stepped hole shape of the seat body 3 can be designed into a circular hole and a rectangular hole according to the shape of the plate girder 1.
The specific operation principle of the beam type recoil safety structure of the fuse board will be described with reference to fig. 7. When the fuse is in an assembly state, the plate beam type recoil safety mechanism is positioned below the ball rotor mechanism, and the plate beam 1 and the split ring 4 together restrain the ball rotor mechanism 5 (explosion-proof mechanism) to realize redundant safety. Wherein the split ring 4 is a centrifugal safety mechanism of the ball rotor mechanism. Under the unexpected falling environment in the service processing stage, the falling impact overload with the falling height of less than 1.5 m is not enough to cause the plate beam 1 to generate larger deformation along the axis direction of the fuse, the ball rotor 5 is restrained by the plate beam 1 and can not rotate, and the fuse is still in a safety state; when the bullet is launched, the fuse and parts of the rotary bullet are simultaneously acted by recoil and centrifugal force. The central part of the plate beam 1 sinks under the action of recoil force to generate plastic deformation, so that the constraint on the ball rotor 5 is relieved, but the ball rotor 5 cannot rotate under the constraint of the split ring 4. When the projectile moves in the chamber and approaches the chamber opening, the recoil borne by the ball rotor 5 is gradually reduced, the split ring 4 is opened under the action of centrifugal force, and the ball rotor 5 is released. After the projectile flies out of the muzzle, the recoil is further reduced until the projectile is nearly disappeared, the ball rotor 5 gradually rotates forward under the action of centrifugal moment, the fuse is relieved, and the projectile is in a cocked state.
Claims (7)
1. The utility model provides a fuse board beam type recoil insurance mechanism which characterized in that: the combined type plate girder comprises a plate girder (1) and a seat body (3), wherein a step hole is formed in the center shaft direction of the seat body (3), and the plate girder (1) is arranged in the step hole in the seat body (3) and is closed and fixed through the seat body (3).
2. A messenger board beam recoil safety mechanism as set forth in claim 1 wherein: the plate beam (1) is in a shape of a circular sheet, a circular ring or a rectangular sheet.
3. A messenger board beam recoil safety mechanism as set forth in claim 2 wherein: still include retaining ring (2), retaining ring (2) set up in the shoulder hole, stack with plate girder (1), carry out axial spacing through retaining ring (2) to plate girder (1).
4. A messenger board beam recoil safety mechanism as set forth in claim 1 wherein: the plate girder (1) is in a cylinder shape with one closed end.
5. A messenger board beam recoil safety mechanism as set forth in claim 1 wherein: the plate beam type recoil safety mechanism is suitable for a high-launch overload small-caliber rotary bullet fuse, in particular to a ball rotor mechanism or a vertical rotor mechanism thereof.
6. A messenger plate beam recoil safety mechanism as set forth in claim 5 wherein: according to the specific structural layout, the plate beam (1) is used as an explosion-proof piece to isolate a sensitive explosion element in an explosion sequence from a next-stage in-line explosion-sensitive element.
7. A letterbox beam squat guard mechanism as claimed in any one of claims 1 to 6 wherein: when the plate beam is launched, the plate beam (1) is subjected to the recoil overload effect to generate unrecoverable plastic deformation, and the safety piece is released to release the safety; in the service handling period, even if the plate beam (1) falls accidentally, the plate beam is subjected to the action of falling overload, the generated elastic deformation is small, and the safety piece is still in a safety state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828821.4A CN113670143B (en) | 2021-07-22 | 2021-07-22 | Beam type recoil safety mechanism for letter-guiding board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110828821.4A CN113670143B (en) | 2021-07-22 | 2021-07-22 | Beam type recoil safety mechanism for letter-guiding board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113670143A true CN113670143A (en) | 2021-11-19 |
| CN113670143B CN113670143B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110828821.4A Active CN113670143B (en) | 2021-07-22 | 2021-07-22 | Beam type recoil safety mechanism for letter-guiding board |
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| CN (1) | CN113670143B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961577A (en) * | 1975-05-12 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Navy | Air driven energy storing fuze safing and arming mechanism |
| US4145971A (en) * | 1977-10-19 | 1979-03-27 | Motorola, Inc. | Electronic time delay safety and arming mechanism |
| CN106338224A (en) * | 2016-10-27 | 2017-01-18 | 南京理工大学 | Time detonating fuse of antiaircraft gun hail-suppression precipitation increasing bomb |
| CN109405676A (en) * | 2018-09-25 | 2019-03-01 | 南京理工大学 | Hail mitigation with centrifugation self-destroying function increases rain bullet time ignition fuse |
| CN111795620A (en) * | 2020-07-14 | 2020-10-20 | 南京理工大学 | Fuse for improving falling safety of recoil safety mechanism by adopting fault safety principle |
| CN111879191A (en) * | 2020-06-30 | 2020-11-03 | 南京理工大学 | Mortar shell warhead mechanical trigger fuse with penetration time self-adapting function |
| CN111928742A (en) * | 2020-06-30 | 2020-11-13 | 南京理工大学 | Fuse for improving reliability of floor wiping explosion and self-destruction |
| CN112066826A (en) * | 2020-08-19 | 2020-12-11 | 南京理工大学 | Mechanical trigger fuse for small-caliber rotary shell warhead |
| CN112082434A (en) * | 2020-08-19 | 2020-12-15 | 南京理工大学 | Electromechanical trigger fuse for bullet of aerial rotating rocket projectile |
-
2021
- 2021-07-22 CN CN202110828821.4A patent/CN113670143B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961577A (en) * | 1975-05-12 | 1976-06-08 | The United States Of America As Represented By The Secretary Of The Navy | Air driven energy storing fuze safing and arming mechanism |
| US4145971A (en) * | 1977-10-19 | 1979-03-27 | Motorola, Inc. | Electronic time delay safety and arming mechanism |
| CN106338224A (en) * | 2016-10-27 | 2017-01-18 | 南京理工大学 | Time detonating fuse of antiaircraft gun hail-suppression precipitation increasing bomb |
| CN109405676A (en) * | 2018-09-25 | 2019-03-01 | 南京理工大学 | Hail mitigation with centrifugation self-destroying function increases rain bullet time ignition fuse |
| CN111879191A (en) * | 2020-06-30 | 2020-11-03 | 南京理工大学 | Mortar shell warhead mechanical trigger fuse with penetration time self-adapting function |
| CN111928742A (en) * | 2020-06-30 | 2020-11-13 | 南京理工大学 | Fuse for improving reliability of floor wiping explosion and self-destruction |
| CN111795620A (en) * | 2020-07-14 | 2020-10-20 | 南京理工大学 | Fuse for improving falling safety of recoil safety mechanism by adopting fault safety principle |
| CN112066826A (en) * | 2020-08-19 | 2020-12-11 | 南京理工大学 | Mechanical trigger fuse for small-caliber rotary shell warhead |
| CN112082434A (en) * | 2020-08-19 | 2020-12-15 | 南京理工大学 | Electromechanical trigger fuse for bullet of aerial rotating rocket projectile |
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| Publication number | Publication date |
|---|---|
| CN113670143B (en) | 2022-06-28 |
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