Gunpowder safety mechanism for fuse

Abstract

The invention discloses a gunpowder safety mechanism for a fuze, and belongs to the technical field of fuze safety systems, the safety system is an assembly of devices for preventing release of isolation and action in the fuze, two independent safety devices are arranged in the safety system, the two safety devices are used for limiting the same explosion-proof mechanism to be in an explosion-proof state, and after the two safety devices are released according to a time sequence, the safety device is used for preventing the same explosion-proof mechanism from being in an explosion-proof state. The explosive-proof mechanism needs to release the explosive-proof state of the explosive-proof mechanism under the action of internal energy storage driving force, so that the initiating explosive devices in the fuse explosion sequence are in an aligned state, the same explosive-proof mechanism is limited by the two insurance devices, one insurance device is the main insurance device, and the other insurance device is the auxiliary insurance device. The safety device has the beneficial effects that as a main fuse of a fuse safety mechanism, the safety device has the characteristics of large pin pulling force, short pin pulling time, reliable action and the like, and can overcome relatively large internal energy storage driving force of an explosion-proof mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of fuze safety systems, and particularly to a powder safety mechanism for fuzes. Background Art

[0002] The fuze of ammunition is a physical system used to sense the environment and targets, or respond to predetermined conditions such as flight time, pressure, commands, etc., and initiate the charge of the warhead of the ammunition. Before reaching the predetermined position or time, the main functions of the fuze (fuze system) are to ensure safety and convert to the armed state. To ensure safety and conversion to the armed state, non-in-line fuze safety systems often use an isolation mechanism to physically isolate the sensitive initiator (primary initiator) from the subsequent initiators, and the isolation mechanism is insured and disarmed through an insurance mechanism. However, in actual processes, the safety systems of fuzes often exhibit unreliable disarming or non-disarming situations, causing the ammunition equipped to lose its due damage effectiveness and posing certain safety hazards, especially for high-value ammunition such as rockets and missiles, resulting in huge losses. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, and provide a powder safety mechanism for fuzes with characteristics such as large pin-pulling force, short pin-pulling time, and reliable operation. Through the locking and unlocking of the rotor component, its insurance and disarming functions are realized.

[0004] The purpose of the present invention is achieved through the following technical solutions: A powder safety mechanism for fuzes includes an insurance body, an insurance body seat, a compression screw, a large detonator tube, and a detonating tube. The insurance body and the insurance body seat are connected by screws. The interior of the insurance body seat is provided with a cavity one, and the interior of the insurance body is provided with a cavity two. The cavity one is used to accommodate the rotor component, and the rotor component is provided with a cavity three for accommodating the front pin of the powder pin puller. The cavity two is used to accommodate the powder pin puller. Preferably, the cavity one is used to assemble the rotor component, and the rotor component is driven by a torsion spring to be on the same axis as the cavity two and is locked by the powder pin puller. The insurance body seat and the insurance body are provided with cavities for accommodating the inertial insurance block and the inertial spring and are on the same axis.

[0005] Preferably, the insurance body seat is provided with a cavity for accommodating the large detonator tube and the detonating tube, and the insurance body is provided with a cavity for accommodating the electric detonator and is on the same axis.

[0006] Preferably, the powder pin puller is fixed inside the cavity two by a compression screw.

[0007] Preferably, the insurance body is used to install the powder pin puller, the electric detonator, and provide a movement channel for the inertial insurance block. The insurance body seat is used to install the rotor component, the large detonator tube, the detonating tube, and provide a movement channel for the inertial insurance block and the inertial spring.

[0008] Preferably, the powder pull pin device serves as the second safety device for locking the rotor component and releases the rotor component after being powered on. The compression screw is used to fix the powder pull pin device. After the rotor component is rotated to the correct position, the electric detonator is powered on and used to detonate the small detonator tube on the rotor component. The electric detonator compression screw is used to fix the electric detonator.

[0009] Preferably, the small detonator tube is riveted on the rotor component. In the safety state, it is used to prevent the accidental action of the electric detonator from detonating the small detonator tube, the large detonator tube, and the detonating transmission tube. In the safety release state, when the electric detonator acts, the small detonator tube can be reliably detonated and detonate the large detonator tube.

[0010] Preferably, the inertial safety block serves as the first safety device and releases the restraint on the rotor component by compressing the inertial spring with the engine thrust. The inertial spring is used to reliably secure the rotor component under the conditions of assembly, transportation, storage, etc. The large detonator tube is used to transfer the explosion energy of the small detonator tube to the detonating transmission tube and detonate the detonating transmission tube.

[0011] Preferably, the detonating transmission tube is used to detonate the warhead charge. After the two safety devices are released, the torsion spring is used to drive the rotation of the rotor component to align the small detonator tube with the electric detonator and the large detonator tube coaxially. The torsion spring fixing screw is used to fix one end of the torsion spring.

[0012] The present invention has the following advantages: 1. In the assembled state of the powder safety mechanism of the present invention, the powder safety mechanism can lock the rotor component through its pin, and under the driving force of the torsion spring, it does not affect its function of releasing the safety (pulling out the pin).

[0013] 2. During the process of releasing the safety of the powder safety mechanism of the present invention, the pin of the powder safety mechanism can quickly and reliably retract to the in-place position, and the rotor component can reliably rotate to the in-place position, so that the ammunition is in a ready-to-fire state. Brief Description of the Drawings

[0014] Figure 1 is a schematic cross-sectional structure diagram of the safety of the present invention; Figure 2 is a schematic cross-sectional view of the explosion isolation of the present invention.

[0015] In the figure, safety body 1, safety body seat 2, compression screw 3, large detonator tube 4, detonating transmission tube 5, screw 6, rotor component 7, powder pull pin device 8, torsion spring 9, inertial safety block 10, inertial spring 11, electric detonator 12, small detonator tube 13, torsion spring fixing screw 14. Detailed Embodiments

[0016] The following further describes the present invention with reference to the drawings. The protection scope of the present invention is not limited to the following: AsFigures 1 - 2 As shown in the figure, a gunpowder safety mechanism for a fuse includes a safety body 1, a safety body seat 2, a compression screw 3, a large detonator tube 4, and a detonator tube 5. The safety body 1 and the safety body seat 2 are connected by screws 6. There is a cavity one inside the safety body seat 2, and a cavity two inside the safety body. The cavity one is used to accommodate the rotor component 7. There is a cavity three on the rotor component 7 for accommodating the front pin of the gunpowder pin puller 8. The cavity two is used to accommodate the gunpowder pin puller 8; In this embodiment, the cavity one is used to assemble the rotor component 7, and the rotor component 7 is driven by a torsion spring 9 to be on the same axis as the cavity two and is locked by the gunpowder pin puller 8. The safety body seat 2 and the safety body 1 are provided with cavities for accommodating the inertial safety block 10 and the inertial spring 11 and are on the same axis.

[0017] In this embodiment, the safety body seat 2 is provided with a cavity for accommodating the large detonator tube 4 and the detonator tube 5, and the safety body 1 is provided with a cavity for accommodating the electric detonator 12 and is on the same axis.

[0018] In this embodiment, the gunpowder pin puller 8 is fixed inside the cavity two by the compression screw 3.

[0019] In this embodiment, the safety body 1 is used to install the gunpowder pin puller 8, the electric detonator 12, and provide a movement channel for the inertial safety block 10. The safety body seat 2 is used to install the rotor component 7, the large detonator tube 4, the detonator tube 5, and provide a movement channel for the inertial safety block 10 and the inertial spring 11.

[0020] In this embodiment, the gunpowder pin puller 8 serves as the second safety measure, used to lock the rotor component 7 and release the rotor component 7 after being powered on. The compression screw 3 is used to fix the gunpowder pin puller 8. After the rotor component is rotated to the correct position, the electric detonator 12 is used to detonate the small detonator tube 13 on the rotor component 7 after being powered on. The electric detonator compression screw 3 is used to fix the electric detonator 12.

[0021] In this embodiment, a small detonator tube 12 is riveted on the rotor component 1. In the safety state, it is used to prevent the accidental action of the electric detonator 12 from detonating the small detonator tube 13, the large detonator tube 4, and the detonator tube 5; in the disarmed state, when the electric detonator 12 acts, the small detonator tube 13 can be reliably detonated and detonate the large detonator tube 4.

[0022] In this embodiment, the inertial safety block 10 serves as the first safety measure and releases the constraint on the rotor component 1 by compressing the inertial spring 11 through the engine thrust; the inertial spring 11 is used to overcome the inertial safety block 10 in environments such as assembly, transportation, and storage to reliably safeguard the rotor component 7. The large detonator tube 4 is used to transfer the explosion energy of the small detonator tube 13 to the detonator tube 5 and detonate the detonator tube 5.

[0023] In this embodiment, the booster tube 5 is used to detonate the warhead charge. The torsion spring 9 is used to drive the rotor component 7 to rotate after two safety devices are released, so that the small detonator tube 13 is coaxial with the electric detonator 12 and the large detonator tube 4. The torsion spring fixing screw 14 is used to fix one end of the torsion spring 9.

[0024] The working principle of the present invention is as follows: The rotor component 7 is driven by the torsion spring 9. The small detonator tube 13 is riveted on the rotor component. In the assembled (safe) state, the small detonator tube 13 is axially offset from the electric detonator 12, the large detonator tube 13, and the booster tube 5 by a certain position, so as to be isolated. In the safety release state, the small detonator tube 13, the electric detonator 12, the large detonator tube 13, and the booster tube 5 are on the same axis. Under the action of the electric detonator 12, the small detonator tube 13 can be reliably detonated and detonate the large detonator tube 13.

[0025] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gunpowder safety mechanism for a fuze, characterized in that: It includes an insurance body, an insurance body seat, a pressure screw, a large detonator tube and a detonating tube. The insurance body and the insurance body seat are connected by screws. There is a cavity one inside the insurance body seat, and a cavity two inside the insurance body. The cavity one is used to accommodate the rotor component, and there is a cavity three on the rotor component for accommodating the front pin of the powder pull-out pin device. The cavity two is used to accommodate the powder pull-out pin device; The cavity one is used to assemble the rotor component, and the rotor component is driven by a torsion spring to be on the same axis as the cavity two and is locked by the powder pull-out pin device. The insurance body seat and the insurance body are provided with cavities for accommodating the inertial insurance block and the inertial spring and are on the same axis.

2. The powder safety mechanism for a fuze according to claim 1, characterized in that: The insurance body seat is provided with a cavity for accommodating the large detonator tube and the detonating tube, and the insurance body is provided with a cavity for accommodating the electric detonator and is on the same axis.

3. The powder safety mechanism for a fuze according to claim 1, wherein: The powder pull-out pin device is fixed inside the cavity two by the pressure screw.

4. A primer fuse safety mechanism according to claim 1, characterized in that: The insurance body is used to install the powder pull-out pin device, the electric detonator and provide a movement channel for the inertial insurance block. The insurance body seat is used to install the rotor component, the large detonator tube, the detonating tube and provide a movement channel for the inertial insurance block and the inertial spring.

5. The powder safety mechanism for a fuze according to claim 2, characterized in that: The powder pull-out pin device serves as the second insurance, used to lock the rotor component and release the rotor component after being powered on. The pressure screw is used to fix the powder pull-out pin device. After the rotor component is rotated to the correct position, the electric detonator is used to detonate the small detonator tube on the rotor component after being powered on. The electric detonator pressure screw is used to fix the electric detonator.

6. The powder safety mechanism for a fuze according to claim 1, characterized in that: The rotor component has a small detonator tube riveted on it. In the insurance state, it is used to prevent the accidental action of the electric detonator from detonating the small detonator tube, the large detonator tube and the detonating tube. In the de-arming state, when the electric detonator acts, the small detonator tube can be reliably detonated and detonate the large detonator tube.

7. A primer fuse safety mechanism according to claim 1, characterized in that: The inertial insurance block serves as the first insurance, and releases the restraint on the rotor component by compressing the inertial spring through the engine thrust. The inertial spring is used to reliably insure the rotor component under the conditions of assembly, transportation, storage, etc. The large detonator tube is used to transfer the explosion energy of the small detonator tube to the detonating tube and detonate the detonating tube.

8. The powder safety mechanism for a fuze according to claim 1, characterized in that: The detonating tube is used to detonate the warhead charge. The torsion spring is used to drive the rotor component to rotate after the two insurances are released, so that the small detonator tube is coaxial with the electric detonator and the large detonator tube. The torsion spring fixing screw is used to fix one end of the torsion spring.

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