CN114705090A

CN114705090A - Bullet detonator device

Info

Publication number: CN114705090A
Application number: CN202210446042.2A
Authority: CN
Inventors: 冯永具; 舒炳林
Original assignee: Guizhou Aerospace Fenghua Precision Equipment Co Ltd
Current assignee: Guizhou Aerospace Fenghua Precision Equipment Co Ltd
Priority date: 2022-04-26
Filing date: 2022-04-26
Publication date: 2022-07-05
Anticipated expiration: 2042-04-26
Also published as: CN114705090B

Abstract

The invention provides a projectile body fuse device which comprises an installation seat and a rotating block, wherein the installation seat and the rotating block are connected with a torsional spring through a rotating shaft, an electric detonator is arranged on the rotating block, an arc-shaped first sliding groove is formed in the installation seat and used for accommodating the electric detonator to slide, one end of the first sliding groove is located in the middle of the installation seat, a safety screw is arranged between the rotating block and the installation seat and used for locking the rotating block when the electric detonator deviates from the middle of the installation seat. The fuse has the characteristics of high safety in storage and transportation and good detonation reliability, and can ensure the safety in service and use processes; the rotating block is locked by the safety screw, and in a safety state, the electric detonator deviates from the initiating explosive column, so that the initiating explosive column cannot be detonated even if the electric detonator explodes, and the safety is high; when the explosive is put in, the safety screw is opened, and the electric detonator is aligned to the initiating explosive column, so that the reliability is high.

Description

Bullet detonator device

Technical Field

The invention relates to the technical field of fire extinguishing bombs, in particular to a bomb body fuse device.

Background

Airborne forest fire extinguishing bomb mainly used forest fire control field is carried by many rotor unmanned aerial vehicle and is flown to the scene of a fire above, and the selective plane is implemented and is put in. Because the inside priming system and fire extinguishing agent that are equipped with of airborne forest fire extinguishing bomb, the detonation wave through the priming system makes the fire extinguishing agent shed, accomplishes the operation of putting out a fire, therefore its security is very important, including the security of the service process, carry flight, the input process and the reliability of detonating after putting in, if not detonating, brings very big threat to follow-up search and rescue personnel's security. The existing airborne fire extinguishing bomb mostly adopts an electronic explosion-proof mode, the mode is greatly influenced by the environment and is unreliable, most of detonations are only one detonating mode such as timing or infrared, and a dummy bomb is easy to cause.

Patent document (application number 201721682258X) provides an air-drop formula fire extinguishing bomb for unmanned aerial vehicle, including the projectile body, the tail of the bullet and hang the mechanism, its inside is provided with intelligence and decides high mechanism of starting a fire, through unmanned aerial vehicle mains operated, intelligence is decided high mechanism of starting a fire and is still connected with unmanned aerial vehicle control system, control system is used for deciding high start forest fire extinguishing bomb, this patent does not have any safeguard, its mode of detonating is too single simultaneously, security consideration is not enough in service and the use.

Patent document (application No. 2929217886326) provides an air-drop forest fire extinguishing bomb based on an aircraft, which is mainly used for large-scale airplanes and comprises a bomb body, a radio near-explosion detection mechanism, a bomb body, a central explosive tube, an empennage and the like, wherein an intelligent explosion control chip, an isolation safety mechanism and a firing and explosion mechanism are arranged in the empennage, and the patent has more perfect safety measures and more reliable detonation means. However, the isolation safety mechanism adopts a safety pin type isolation mechanism and is connected with the unmanned aerial vehicle through a pull rope, when the unmanned aerial vehicle is thrown in, the projectile body falls in a free-falling body, the pull rope on the unmanned aerial vehicle pulls out the safety pin, the falling state of the projectile body can be influenced in this way, and the safety pin is exposed and leaked outside, so that potential safety hazards exist; in addition, the detonation mechanism adopts a fixed-height and touch dual-detonation mode, a long-acting battery is arranged in the detonation mechanism, the intelligent fixed-height chip is powered by the long-acting battery, and if the fire extinguishing bomb is not detonated, the fire extinguishing bomb becomes a powerful dummy bomb. The patent does not have a safe and reliable initiating measure in place.

Disclosure of Invention

In order to solve the technical problem, the invention provides a projectile body fuze device.

The invention is realized by the following technical scheme.

The invention provides a projectile body fuse device which comprises an installation seat and a rotating block, wherein the installation seat and the rotating block are connected with a torsional spring through a rotating shaft, an electric detonator is arranged on the rotating block, an arc-shaped first sliding groove is formed in the installation seat and used for accommodating the electric detonator to slide, one end of the first sliding groove is located in the middle of the installation seat, a safety screw is arranged between the rotating block and the installation seat and used for locking the rotating block when the electric detonator deviates from the middle of the installation seat.

The radian of the first sliding groove is 30-45 degrees.

The mounting seat is also provided with a safety pin which is used for inserting the rotating block for limiting; the upper end of the safety pin extends out of the mounting seat, a spring is connected between the safety pin and the mounting seat, and the spring is used for applying upward elastic force to the safety pin.

The short circuit trigger assembly is used for keeping the electric detonator short circuit in a safety state.

The short circuit trigger assembly comprises a first switch, a second switch, a time delay module and a capacitor, a loop is formed by the capacitor, the first switch, the time delay module and the second switch in sequence, and the second switch is connected with the electric detonator in parallel.

The short circuit trigger assembly further comprises a circuit board, the circuit board is fixed to the bottom of the mounting seat and used for being electrically connected with the first switch, the second switch, the delay module, the capacitor and the electric detonator.

The short circuit trigger assembly further comprises a socket, and the socket is used for being connected with an external onboard power supply to charge the capacitor.

The short circuit trigger assembly further comprises a shell and an insulating shaft, a spring is arranged between the upper end of the insulating shaft and the shell, and the lower end of the insulating shaft penetrates through the shell; the insulating ring is arranged on the inner side of the shell, two conductive shoulders are arranged on the insulating shaft, two conductive rings are arranged on the insulating ring, and the distance between the two conductive rings is different from the distance between the two shoulder structures.

The lower end of the insulating shaft is in contact with the rotating block, and the rotating block is provided with a through hole or a counter bore through which the lower end of the insulating shaft can pass.

The turning block is provided with a second sliding groove for the lower end of the insulating shaft to slide, and the through hole or the counter bore is located at one end of the second sliding groove.

At least one end of the shell is also provided with an insulating screw cap.

And a guide pin is also arranged between the side surface of the insulating shaft and the shell and is in sliding connection with the shell or the insulating shaft.

The short circuit trigger assembly further comprises a grounding switch, and the first switch and the time delay module are connected in series and then connected in parallel with the grounding switch.

The short circuit trigger assembly further comprises a sliding block and a contact pin, a cavity with a downward opening is formed in the mounting seat, the sliding block is arranged in the cavity, an insulating plate is plugged below the cavity, the contact pin penetrates through the insulating plate, and a spring is arranged between the insulating plate and the sliding block.

There is the interval between insulation board and the circuit board, and the contact pin is fixed in on the circuit board.

The invention has the beneficial effects that:

the fuse has the characteristics of high safety in storage and transportation and good detonation reliability, and can ensure the safety in service and use processes.

The rotating block is locked by the safety screw, and in a safety state, the electric detonator deviates from the initiating explosive column, so that the initiating explosive column cannot be detonated even if the electric detonator explodes, and the safety is high; when the explosive is put in, the safety screw is opened, and the electric detonator is aligned to the initiating explosive column, so that the reliability is high.

Through the first switch, the second switch, the delay module and the like of the short circuit trigger assembly, the double insurance of the electric detonator is formed in the insurance state, the safety of the electric detonator is guaranteed, the delay can be accurately set in the putting process, and the fire extinguishing effect is good.

The third heavy insurance of the electric detonator is formed by the grounding switch of the short circuit trigger assembly, the electric detonator is ensured to explode or discharge electric energy when contacting the ground, the post-stage dummy explosion is prevented, and the potential safety hazard of personnel is reduced.

The four-safety type bullet has four insurance, improves the safety of the bullet body, and effectively avoids the phenomenon that the dead bullet damages the saving personnel.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a perspective view of the present invention.

Fig. 3 is a view from direction a of fig. 2.

Fig. 4 is a circuit diagram of a short circuit triggering assembly.

Fig. 5 is a schematic structural diagram of the short circuit trigger assembly.

In the figure: 9-a mounting seat; 10-a turning block; 11-a rotating shaft; 12-torsion spring; 13-electric detonator; 14-a first runner; 15-safety screws; 16-a safety pin; 17-short circuit trigger assembly; 18-a second runner;

20-a first switch; 21-a second switch; 22-a delay module; 23-capacitance; 24-a circuit board; 25-a socket; 26-a ground contact switch;

30-a housing; 31-an insulated shaft; 32-an insulating ring; 33-a conductive shoulder; 34-a conductive ring; 35-insulating screw cap; 36-a guide pin;

40-a slide block; 41-pin; 42-an insulating plate; 100-on-board power supply.

Detailed Description

The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.

Referring to FIGS. 1-5:

the invention provides a projectile body fuse device which comprises an installation seat 9 and a rotating block 10, wherein the installation seat 9 and the rotating block 10 are connected with a torsion spring 12 through a rotating shaft 11, an electric detonator 13 is arranged on the rotating block 10, an arc-shaped first sliding groove 14 is arranged on the installation seat 9, the first sliding groove 14 is used for accommodating the electric detonator 13 to slide, one end of the first sliding groove 14 is positioned in the middle of the installation seat 9, a safety screw 15 is arranged between the rotating block 10 and the installation seat 9, and the safety screw 15 is used for locking the rotating block 10 when the electric detonator 13 deviates from the middle of the installation seat 9.

The principle is as follows: in a safety state, the electric detonator 13 deviates from the middle of the mounting seat 9, the rotating block 10 is locked by the safety screw 15, and meanwhile, the torsion spring 12 stores prestress; the electric detonator 13 is used for initiating the initiating explosive column in the middle of the bomb body, the shock wave of the electric detonator 13 is conical, the central energy is maximum, the edge is weaker, when the electric detonator 13 deviates from the initiating explosive column, if the electric detonator 13 explodes, the shock wave avoids the initiating explosive column on the front side, the explosion of the initiating explosive column can be avoided, and safety guarantee is provided for the transportation and storage of the fire extinguishing bomb. Before the fire extinguishing bomb is projected, the safety screw 15 is screwed off, the rotating block 10 loses the locking of the safety screw 15 and rotates under the action of the torsion spring 12, the electric detonator 13 rotates to the middle of the rotating block 10, namely, the electric detonator is aligned with the initiating explosive column, and at the moment, the explosion shock wave of the electric detonator 13 can be transmitted into the initiating explosive column from the front side, so that the initiating explosive column is ensured to be detonated. The invention can be used for fire extinguishing bomb and other bomb body triggered by the front side of the shock wave of the electric detonator 13.

The fuse has the characteristics of high safety in storage and transportation and good detonation reliability, and can ensure the safety in service and use processes. The rotating block 10 is locked by the safety screw 15, and in a safety state, the electric detonator 13 deviates from the initiating explosive column, so that the initiating explosive column cannot be detonated even if the electric detonator 13 explodes, and the safety is high; when the explosive is put in, the safety screw 15 is opened, and the electric detonator 13 is aligned to the primary explosive column, so that the reliability is high.

The radian of the first chute 14 is 30 to 45 degrees. When the electric detonator is installed on a bomb body, the axial distance between the electric detonator 13 and the initiating explosive column is not more than 3 mm; the arrangement restrains the deviation angle and the distance of the electric detonator 13, and the deviation angle and the distance of the electric detonator 13 are data obtained through a large number of tests, so that the safety in the safety state is ensured, and the detonation initiating explosive column is ensured in the projection process.

The team of inventors has performed a number of tests on this, and some conclusive test data are extracted as follows:

angle 45 ° 4mm apart: the insurance status and the projection status were each tested 10 times. The safety state is not detonated, but the end part of a part of the initiating explosive column is damaged; it is stated that continuing to increase the pitch brings with it certain risks. In the projection state (the safety is relieved, namely the electric detonator 13 is aligned with the initiating explosive column 6), 3 times of initiation are carried out, and 7 times of non-initiation are carried out; the times of non-detonation are more, which indicates that the hidden danger of dummy bullet exists at the interval of 4 mm.

② the angle is 45 degrees and the distance is 3mm, the insurance state and the projection state are respectively tested for 10 times. The safety state is not detonated, and the end of the initiating explosive column is complete; the distance and the angle can ensure the safety of the insurance state. Detonating for 10 times in a projection state; it can be considered that there is no risk of misfiring.

And thirdly, the angle is 30 degrees, the distance is 3mm, and the insurance state and the projection state are tested 15 times respectively. The safety states are not detonated, and the end of the initiating explosive column is complete; the distance and the angle can ensure the safety of the insurance state. Detonating for 15 times in a projection state; it can be considered that there is no risk of misfiring.

And fourthly, the angle is 25 degrees, the distance is 3mm, and the insurance state and the projection state are respectively tested for 15 times. 2 times of detonation in a safety state, 13 times of non-detonation, and damage to the end face of the non-detonation initiating explosive column; the fire hazard in the safety state is large under the angle. In the projection state, the detonation was performed 15 times, and it is considered that the projection state does not cause a dead bullet.

And (4) conclusion: the radian of the first sliding groove 14 is 30-45 degrees, and the axial distance between the electric detonator 13 and the initiating explosive column 6 is not more than 3 mm. This data is a key factor in ensuring both fuse mechanism fuse and projection safety.

As shown in fig. 2: the mounting seat 9 is also provided with a safety pin 16, and the safety pin 16 is used for being inserted into the rotating block 10 for limiting; the upper end of the safety pin 16 extends out of the mounting seat 9, and a spring is connected between the safety pin 16 and the mounting seat 9 and is used for applying upward elastic force to the safety pin 16. Make and throw the operation more convenient, be convenient for do and throw the preparation: when the shot is loaded before projection, the throwing device compresses the safety pin 16, and the safety screw 15 is screwed out at the moment, so that the eccentric state of the electric detonator 13 and the initiating explosive column can be temporarily kept; when the fire extinguishing bomb is thrown, the fire extinguishing bomb is directly put down, the safety pin 16 automatically bounces under the action of the spring, and the electric detonator 13 is opposite to the initiating explosive column; and after the projection is ready, the safety screw 15 is installed back to cancel the projection.

As shown in FIGS. 2 to 5: and the short circuit trigger assembly 17 is further included, and the short circuit trigger assembly 17 is used for keeping the electric detonator 13 short circuit in a safety state. Ensuring that the electric detonator 13 does not explode in the safe state.

As shown in fig. 4: the short circuit trigger assembly 17 comprises a first switch 20, a second switch 21, a delay module 22 and a capacitor 23, wherein the capacitor 23, the first switch 20, the delay module 22 and the second switch 21 form a loop in sequence, and the second switch 21 is connected with the electric detonator 13 in parallel.

During carrying, the capacitor 23 is charged in parallel with the airborne power supply 100, the first switch 20 is initially switched off, the second switch 21 is switched on to short-circuit the electric detonator 13, double insurance is formed to prevent the electric detonator 13 from exploding, and if other accidents cause the circuit to be switched on (for example, the circuit also comprises other elements and branches), the safety of the electric detonator 13 can be ensured by virtue of the short-circuit state; when the electric detonator is thrown, the first switch 20 is closed, the second switch 21 is opened, the short circuit state is released, the time delay module 22 counts time, and the electric detonator 13 is connected and explodes after the time counting is finished. The delay module 22 can use a plurality of delay chips connected in series, and can also use the common delay module 22 in the prior art, so that the delay time can be set through communication with a terminal, the accurate timing blasting is realized, and the fire extinguishing effect is good. The rotating block 10, the first switch 20 and the second switch 21 form triple insurance, and safety is guaranteed.

The short circuit trigger assembly 17 further comprises a circuit board 24, the circuit board 24 is fixed at the bottom of the mounting seat 9, and the circuit board 24 is used for electrically connecting the first switch 20, the second switch 21, the delay module 22, the capacitor 23 and the electric detonator 13. The structure is compact, the arrangement of the wires is orderly, the size of the device is reduced, and the structural stability is improved.

The short trigger assembly 17 further comprises a socket 25, the socket 25 being adapted to be connected to an external on-board power supply 100 for charging the capacitor 23.

As shown in fig. 2 and 5: the short circuit trigger assembly 17 further comprises a shell 30 and an insulating shaft 31, a spring is arranged between the upper end of the insulating shaft 31 and the shell 30, and the lower end of the insulating shaft 31 penetrates through the shell 30; an insulating ring 32 is disposed inside the housing 30, two conductive shoulders 33 are disposed on the insulating shaft 31, two conductive rings 34 are disposed on the insulating ring 32, and a distance between the two conductive rings 34 is different from a distance between the two shoulder structures. The conductive shoulders 33 and the conductive rings 34 can be used for connecting wires, respectively, and a pair of the conductive shoulders 33 and the conductive rings 34 form the first switch 20 or the second switch 21, and by this arrangement, only one shoulder structure can be in contact with one conductive ring 34, so that the first switch 20 and the second switch 21 can be switched.

As shown in fig. 2: the lower end of the insulating shaft 31 is in contact with the rotating block 10, and the rotating block 10 is provided with a through hole or a counter bore through which the lower end of the insulating shaft 31 can pass. When the rotating block 10 rotates to enable the electric detonator 13 to face the initiating explosive column, the through hole or the counter bore correspondingly rotates to the position below the insulating shaft 31, the insulating shaft 31 sinks, and therefore the pair of conducting shoulders 33 and the conducting rings 34 are disconnected and the other pair of conducting shoulders and the conducting rings are in contact, and the contact of the second switch 21 is switched to the contact of the first switch 20; the setting has good linkage, the electric detonator 13 starts time delay timing when rotating, and the detonation time is convenient and accurate to control.

The turning block 10 is provided with a second sliding groove 18 for the lower end of the insulating shaft 31 to slide, and the through hole or the counter bore is located at one end of the second sliding groove 18. The sliding track of the insulating shaft 31 on the rotating block 10 is accurate, so that the insulating shaft can be accurately aligned to a through hole or a counter bore, and mechanical faults are prevented.

At least one end of the shell 30 is further provided with an insulating screw cap 35. The size of the axial space in the shell 30 can be conveniently adjusted, and the assembly is convenient.

A guide pin 36 is further arranged between the side surface of the insulating shaft 31 and the shell 30, and the guide pin 36 is connected with the shell 30 or the insulating shaft 31 in a sliding mode. Prevent that insulating axle 31 from rotating, the wiring of being convenient for prevents that the wire winding from leading to pulling to decrease, contact failure on insulating axle 31.

As shown in fig. 4: the short circuit trigger assembly 17 further includes a grounding switch 26, and the first switch 20 and the delay module 22 are connected in series and then connected in parallel with the grounding switch 26. If the bullet still does not detonate when falling to the ground due to the faults of the delay module 22, other switches and other elements, the grounding switch 26 is closed to play a role and is directly connected, and if the electric detonator 13 is not short-circuited and has no fault, the electric detonator is directly detonated; if the electric detonator 13 is short-circuited or fails, the stored electricity of the capacitor 23 is emptied, so that the risk of post-explosion of the dummy bomb is avoided.

As shown in FIG. 1: the short circuit trigger assembly 17 further comprises a sliding block 40 and a contact pin 41, a cavity with a downward opening is formed in the mounting base 9, the sliding block 40 is arranged in the cavity, an insulating plate 42 is plugged below the cavity, the contact pin 41 penetrates through the insulating plate 42, and a spring is arranged between the insulating plate 42 and the sliding block 40. The slide block 40 and the contact pin 41 are used for connecting a lead and form the grounding switch 26; under the support of the spring, the sliding block 40 is separated from the contact pin 41, when the fire extinguishing bomb falls to the ground, under the action of inertia, the sliding block 40 overcomes the spring force to be downward, the contact pin 41 is contacted, and the grounding switch 26 is closed.

Further, the insulating board 42 is spaced apart from the circuit board 24, and the pins 41 are fixed to the circuit board 24. When the slider 40 moves, the insulating plate 42 can be pushed out of the cavity by the aid of the counterforce of the spring, so that the spring cannot jack the slider 40 again, the contact time of the contact pin 41 and the slider 40 is prolonged, and electric energy of the capacitor 23 is fully discharged.

Claims

1. A projectile detonator device characterized by: including mount pad (9), turning block (10), mount pad (9) are connected with torsional spring (12) through pivot (11) with turning block (10), are equipped with electric detonator (13) on turning block (10), are equipped with curved first spout (14) on mount pad (9), and first spout (14) are used for holding electric detonator (13) and slide, and first spout (14) one end is located in the middle of mount pad (9), are equipped with safety screw (15) between turning block (10) and mount pad (9), and safety screw (15) are used for locking turning block (10) when electric detonator (13) skew mount pad (9) are middle.

2. The projectile detonator apparatus of claim 1 wherein: the mounting seat (9) is also provided with a safety pin (16), and the safety pin (16) is used for being inserted into the rotating block (10) for limiting; the upper end of the safety pin (16) extends out of the mounting seat (9), a spring is connected between the safety pin (16) and the mounting seat (9), and the spring is used for applying upward elastic force to the safety pin (16).

3. The projectile detonator apparatus of claim 1 wherein: the short-circuit protection device is characterized by further comprising a short-circuit trigger assembly (17), wherein the short-circuit trigger assembly (17) is used for keeping the electric detonator (13) short-circuited in the insurance state, the short-circuit trigger assembly (17) comprises a first switch (20), a second switch (21), a delay module (22) and a capacitor (23), a loop is formed by the capacitor (23), the first switch (20), the delay module (22) and the second switch (21) in sequence, and the second switch (21) is connected with the electric detonator (13) in parallel.

4. The projectile detonator apparatus of claim 3 wherein: the short circuit trigger assembly (17) further comprises a circuit board (24), the circuit board (24) is fixed to the bottom of the mounting seat (9), and the circuit board (24) is used for being electrically connected with the first switch (20), the second switch (21), the delay module (22), the capacitor (23) and the electric detonator (13).

5. The projectile detonator apparatus of claim 3 or 4 wherein: the short circuit trigger assembly (17) further comprises a shell (30) and an insulating shaft (31), a spring is arranged between the upper end of the insulating shaft (31) and the shell (30), and the lower end of the insulating shaft (31) penetrates through the shell (30); an insulating ring (32) is arranged on the inner side of the shell (30), two conductive shoulders (33) are arranged on the insulating shaft (31), two conductive rings (34) are arranged on the insulating ring (32), and the distance between the two conductive rings (34) is different from the distance between the two shoulder structures.

6. The projectile detonator apparatus of claim 5 wherein: the lower end of the insulating shaft (31) is in contact with the rotating block (10), and the rotating block (10) is provided with a through hole or a counter bore through which the lower end of the insulating shaft (31) can pass.

7. The projectile detonator apparatus of claim 6 wherein: the rotating block (10) is provided with a second sliding groove (18) for the lower end of the insulating shaft (31) to slide, and the through hole or the counter bore is located at one end of the second sliding groove (18).

8. The projectile detonator apparatus of claim 3 or 4 wherein: the short circuit trigger assembly (17) further comprises a grounding switch (26), and the first switch (20) and the time delay module (22) are connected in series and then connected with the grounding switch (26) in parallel.

9. The projectile detonator apparatus of claim 8 wherein: short circuit trigger subassembly (17) still include slider (40), contact pin (41), are equipped with downwardly opening's cavity on mount pad (9), and in this cavity was located in slider (40), insulation board (42) had been filled in below the cavity, and this insulation board (42) are run through to contact pin (41), are equipped with the spring between insulation board (42) and slider (40).

10. The projectile detonator apparatus of claim 9 wherein: under the condition that the short circuit trigger assembly (17) further comprises a circuit board (24), a space is reserved between the insulating plate (42) and the circuit board (24), and the contact pin (41) is fixed on the circuit board (24).