阅读说明：本技术 引信板梁式后坐保险机构 (Beam type recoil safety mechanism for letter-guiding board ) 是由 王雨时 彭启蒙 于 2021-07-22 设计创作，主要内容包括：本发明公开一种引信板梁式后坐保险机构,包括座体、板梁。板梁置于座体的阶梯孔内。在该后坐保险机构用于隔爆机构的保险机构时,该板梁又可作为隔爆件,将爆炸序列中的敏感爆炸元件与下一级直列顿感爆炸元件隔离。在弹丸发射时,板梁受后坐过载的作用,产生轴向的塑性变形,从而解除对被保险件的保险；在弹丸处于勤务处理阶段的跌落环境时,后坐过载不足以使板梁产生明显塑性变形,引信仍处于保险状态。本发明提出的引信板梁式后坐保险机构,结构简约、体积小巧、成本低廉、作用可靠,可有效减小引信轴向尺寸,特别适用于高发射过载环境的小口径弹丸的垂直转子或球转子机构引信。(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.)

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.

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.