Gas pressure safety device

Abstract

The invention belongs to the technical field of security, and particularly relates to a gas pressure safety device which comprises a fuse body. The sliding block is arranged in the fuse body in a sliding manner, and a detonating grain is arranged on the sliding block; the fuel gas pressure safety mechanism is embedded in the fuse body through a safety fixing nut, and the fuel gas pressure safety mechanism is used for locking the sliding block at the safety position; the safety assembly is arranged in the fuse body and used for locking the sliding block at the safety position, and the safety assembly and the gas pressure safety mechanism are located on the two sides of the sliding block respectively; the electric detonator is arranged in the fuze body, when the sliding block is located at the safety position, the detonating grain and the electric detonator are staggered, the sliding block slides to the detonating position under the action of the power assembly after being unlocked, and when the sliding block is located at the detonating position, the detonating grain is in contact with the electric detonator. According to the safety mechanism, the safety mechanism can reliably release safety according to preset requirements, and it is guaranteed that the rocket is in a safety state in the storage, transportation and service treatment processes.

Description

Technical Field

[0001] The present invention belongs to the technical field of security, and particularly relates to a gas pressure insurance device. Background Art

[0002] The insurance mechanism is one of the important and essential mechanisms in the fuse. Its function is to ensure the safety of the insured parts or mechanisms during handling and launching near the muzzle, and to reliably release the insurance of the insured parts at the appropriate time, so that the entire fuse is in a ready-to-fire state.

[0003] Traditional insurance mechanisms often use the overload during rocket launch as the condition for releasing the insurance mechanism. Using a large overload can well ensure that the rocket works according to the preset design requirements. However, in low-overload non-rotating or slightly rotating rockets, except for the recoil force, there is no centrifugal force that can be applied. It is difficult to meet the insurance release requirements by using overload as the condition, and the selection of the environmental force for releasing the insurance becomes a major difficulty. It is necessary to consider not only the safety of the projectile during handling, but also whether the insurance can be reliably released on the ballistic trajectory. Moreover, with the requirements of modern warfare, many rockets require subsequent insurance release after flight overload, which requires meeting a certain insurance release safety distance.

[0004] The traditional insurance mechanism has the following deficiencies:

[0005] 1. It is difficult for the fuses of non-rotating or low-speed rotating projectiles to simultaneously select two available environmental forces, resulting in the inability to meet the muzzle safety distance.

[0006] 2. It cannot meet the requirements for using the insurance mechanism to release the insurance under the condition of no-overload environment of the rocket.

[0007] 3. The insurance mechanisms of modern rockets often have complex structures, large volumes, and high costs.

[0008] Therefore, it is necessary to design a gas pressure insurance device to solve the above problems. Summary of the Invention

[0009] The purpose of the present invention is to provide a gas pressure insurance device, which utilizes the gas pressure environment conditions during rocket launch to enable the insurance mechanism to reliably release the insurance according to the predetermined requirements, and ensure that the rocket is in an insured state during storage, transportation, and handling.

[0010] To achieve the above object, the present invention provides the following solution: A gas pressure insurance device, including a fuse body;

[0011] A slider, slidably arranged in the fuse body, and an explosive column is arranged on the slider;

[0012] A power assembly, arranged in the fuse body, and the power assembly is used to drive the slider to slide in the fuse body;

[0013] A gas pressure safety mechanism is embedded in the fuse body through a safety fixing nut. The gas pressure safety mechanism is used to lock the slider in the safety position, and unlocks the slider after being acted upon by gas pressure.

[0014] A safety component is arranged in the fuse body. The safety component is used to lock the slider in the safety position, and the safety component and the gas pressure safety mechanism are respectively located on both sides of the slider.

[0015] An electric detonator is arranged in the fuse body. When the slider is in the safety position, the detonating charge column is offset from the electric detonator. After the slider is unlocked, it slides to the detonation position under the action of the power component. When the slider is in the detonation position, the detonating charge column contacts the electric detonator.

[0016] For a gas pressure safety device based on the present invention, the gas pressure safety mechanism includes a safety housing, which is fixedly embedded in the fuse body. One end of the safety housing close to the outside of the fuse body is fixedly connected to a safety base through a base screw. A piston rod is slidably arranged inside the safety housing. An elastic component is arranged at one end of the piston rod away from the safety base. A limiting component is arranged at one end of the safety housing away from the safety base. The limiting component cooperates with the end of the piston rod. A clamping component is arranged on the limiting component. One end of the clamping component is located inside the safety housing, and the other end of the clamping component is located inside the slider.

[0017] For a gas pressure safety device based on the present invention, the limiting component includes a shear pin. The shear pin is U-shaped. The horizontal section of the shear pin is located inside one end of the safety housing and passes through the end of the piston rod. The two vertical sections of the shear pin are respectively located on both sides outside the safety housing. The clamping component is arranged on the horizontal section of the shear pin.

[0018] For a gas pressure safety device based on the present invention, the clamping component includes a safety rod. One end of the safety rod is located inside the safety housing and is connected to the horizontal section of the shear pin. The other end of the safety rod is located inside the slider, and a blind hole is provided on the side wall. One end of a small spring is fixedly connected to the side wall of the blind hole, and the other end of the small spring is fixedly connected to a steel ball. The steel ball is movably arranged in the blind hole.

[0019] For a gas pressure safety device based on the present invention, the elastic component includes a spring. The spring is sleeved outside the piston rod. One end of the spring is fixedly connected to the convex surface of the outer side wall of the piston rod, and the other end of the spring is fixedly connected to the inner wall of the safety housing.

[0020] For a gas pressure safety device based on the present invention, a sealing ring is provided between the inner side wall of the safety housing and the outer side wall of the piston rod.

[0021] For a gas pressure safety device based on the present invention, a filter screen is provided on the safety base.

[0022] For a gas pressure safety device based on the present invention, the safety assembly includes a status switch and a pin puller. The status switch and the pin puller are arranged side by side on the same side of the slider. One end of the pin puller is clamped with the slider, and a pin puller fixing nut is provided at the other end of the pin puller.

[0023] For a gas pressure safety device based on the present invention, a sliding cavity is formed in the fuse body. The slider is slidably arranged in the sliding cavity. A pressing plate is provided at the opening end of the sliding cavity, and the pressing plate is fixedly connected to the fuse body by screws.

[0024] For a gas pressure safety device based on the present invention, the power assembly includes a push spring. One end of the push spring is fixedly connected to the side wall of the sliding cavity, and the other end of the push spring is fixedly connected to the slider.

[0025] Compared with the prior art, the present invention has the following advantages and technical effects:

[0026] Through the gas pressure safety mechanism provided by the present invention, it can utilize the characteristics of sudden increase - maintenance - sudden decrease of gas pressure during combustion, extend the time of releasing the safety when releasing the safety, adapt to the release of safety under low - overload non - rotating or slightly rotating environmental conditions, with high reliability, simple structure and small volume, and can be used in various low - overload launch - type weapon ammunition systems. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following - described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings:

[0028] Figure 1 It is a schematic diagram of the whole of the present invention;

[0029] Figure 2 It is a schematic diagram of the locked state of the present invention;

[0030] Figure 3 It is a schematic diagram of the unlocked state of the present invention;

[0031] Figure 4 It is a schematic diagram of the locked state of the gas pressure safety mechanism of the present invention;

[0032] Figure 5 Schematic diagram of the unlocking state of the gas pressure insurance mechanism of the present invention;

[0033] Figure 6 Explosion diagram of the gas pressure insurance mechanism of the present invention.

[0034] Among them, 1. fuse body; 2. gas pressure insurance mechanism; 201. insurance housing; 202. shear pin; 203. sealing ring; 204. base screw; 205. insurance base; 206. filter screen; 207. piston rod; 208. spring; 209. insurance rod; 210. steel ball; 211. small spring; 3. insurance fixing nut; 4. pressing plate; 5. screw; 6. push spring; 7. slider; 8. detonating charge column; 9. status switch; 10. pin puller; 11. pin puller fixing nut; 12. electric detonator. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Referring to Figures 1 to 6 as shown, the present invention provides a gas pressure insurance device, including

[0038] fuse body 1;

[0039] slider 7, slidably disposed in fuse body 1, and a detonating charge column 8 is disposed on slider 7;

[0040] a power assembly, disposed in fuse body 1, and the power assembly is used to drive slider 7 to slide in fuse body 1;

[0041] a gas pressure insurance mechanism 2, embedded in fuse body 1 through an insurance fixing nut 3, and the gas pressure insurance mechanism 2 is used to lock slider 7 in the insurance position, and the gas pressure insurance mechanism 2 releases the lock on slider 7 after being acted on by gas pressure;

[0042] an insurance assembly, disposed in fuse body 1, and the insurance assembly is used to lock slider 7 in the insurance position, and the insurance assembly and the gas pressure insurance mechanism 2 are respectively located on both sides of slider 7;

[0043] The electric detonator 12 is arranged inside the fuse body 1. When the slider 7 is in the safety position, the detonating charge column 8 is staggered from the electric detonator 12. After the slider 7 is unlocked, it slides to the detonation position under the action of the power assembly. When the slider 7 is in the detonation position, the detonating charge column 8 is in contact with the electric detonator 12.

[0044] Further, the gas pressure safety mechanism 2 includes a safety housing 201, which is fixedly embedded in the fuse body 1. One end of the safety housing 201 close to the outside of the fuse body 1 is fixedly connected with a safety base 205 through a base screw 204. A piston rod 207 is slidably arranged inside the safety housing 201. An elastic component is arranged at one end of the piston rod 207 away from the safety base 205. A limiting component is arranged at one end of the safety housing 201 away from the safety base 205. The limiting component cooperates with the end of the piston rod 207. A clamping component is arranged on the limiting component. One end of the clamping component is located inside the safety housing 201, and the other end of the clamping component is located inside the slider 7.

[0045] Further, the limiting component includes a shear pin 202. The shear pin 202 is U-shaped. The horizontal section of the shear pin 202 is located inside one end of the safety housing 201 and passes through the end of the piston rod 207. The two vertical sections of the shear pin 202 are respectively located on both sides outside the safety housing 201. The clamping component is arranged on the horizontal section of the shear pin 202.

[0046] Further, the clamping component includes a safety rod 209. One end of the safety rod 209 is located inside the safety housing 201 and is connected to the horizontal section of the shear pin 202. The other end of the safety rod 209 is located inside the slider 7, and a blind hole is provided on the side wall. One end of a small spring 211 is fixedly connected to the side wall of the blind hole, and the other end of the small spring 211 is fixedly connected to a steel ball 210. The steel ball 210 is movably arranged in the blind hole.

[0047] Further, the elastic component includes a spring 208. The spring 208 is sleeved outside the piston rod 207. One end of the spring 208 is fixedly connected to the convex surface of the outer side wall of the piston rod 207, and the other end of the spring 208 is fixedly connected to the inner wall of the safety housing 201.

[0048] A step matching the piston rod 207 is provided in the safety housing 201. The piston rod 207 is designed into upper and lower parts, and the connection part is designed into a "concave-convex" structure.

[0049] Further, a sealing ring 203 is arranged between the inner side wall of the safety housing 201 and the outer side wall of the piston rod 207.

[0050] Further, a filter screen 206 is arranged on the safety base 205.

[0051] Furthermore, the safety assembly includes a status switch 9 and a pin puller 10, which are arranged side by side on the same side of the slider 7. One end of the pin puller 10 is clamped with the slider 7, and the other end of the pin puller 10 is provided with a pin puller fixing nut 11.

[0052] Furthermore, a sliding cavity is provided in the fuze body 1 , and a sliding block 7 is slidably disposed in the sliding cavity. A pressing plate 4 is provided at the open end of the sliding cavity, and the pressing plate 4 is fixedly connected to the fuze body 1 via screws 5 .

[0053] Furthermore, the power assembly includes a push spring 6 , one end of which is fixedly connected to the side wall of the sliding cavity, and the other end of which is fixedly connected to the sliding block 7 .

[0054] When the slide block 7 is locked, the push spring 6 is in a compressed state.

[0055] The working process of the present invention is as follows:

[0056] When the safety is not released, the safety rod 209 and the pin puller 10 will be locked in the safety position by the safety part, and the explosion sequence in the device will be staggered and isolated. At this time, the state switch 9 is in a closed state, which meets the safety requirements of the device during service processing. After the rocket engine is ignited, the gas enters the air cavity through the filter 206, and a high value of gas pressure will be generated in the air cavity formed by the safety shell 201, the safety base 205, the piston rod 207 and the sealing ring 203. The gas pressure in the air cavity will suddenly increase, and the piston rod 207 drives the spring 208 to move upward under the high value of gas pressure. When the upward thrust on the piston rod 207 is greater than the shear force required by the shear pin 202, the shear pin 202 is sheared off, and the piston rod 207 continues to move upward under the thrust until it is tightly matched with the locking hole of the slider 7, and the steel ball 210 in the safety rod 209 is bounced by the small spring 211 The safety rod 209 is stuck in the slider 7, and the gas will continue for a certain period of time. When the gas pressure drops suddenly, the pressure in the gas cavity gradually decreases. When the thrust of the spring 208 is greater than the pressure in the gas cavity, the spring 208 pushes the piston rod 207 to move downward, and the safety rod 209 is stuck by the steel ball 210 and remains in the slider 7. The slider 7 drives the safety rod 209 to move forward together under the thrust of the push spring 6, and the piston rod 207 releases the lock of the safety mechanism. At the same time, after the pin puller 10 receives the transmission signal, the pin puller 10 is pulled out to release the second safety of the slider 7. At this time, the state switch 9 is in the off state, and the explosive transmission series in the device is aligned. The slider 7 is pushed to the predetermined position by the push spring 6, and the explosive column 8 on the slider 7 is directly below the electric detonator 12 on the fuze body 1. At this time, the electric detonator 12 receives the explosion signal and can normally detonate the explosive column 8.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0058] The embodiments described above are only for describing the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope of the present invention.

Claims

1. A gas pressure insurance device, characterized in that, including a fuse body (1); a slider (7) slidably disposed within the fuse body (1), and an initiating explosive charge (8) is provided on the slider (7); a power assembly disposed within the fuse body (1) for driving the slider (7) to slide within the fuse body (1); a gas pressure safety mechanism (2) embedded in the fuse body (1) through a safety fixing nut (3), the gas pressure safety mechanism (2) being configured to lock the slider (7) in a safety position, and the gas pressure safety mechanism (2) releasing the lock on the slider (7) when subjected to gas pressure; a safety component disposed within the fuse body (1) for locking the slider (7) in a safety position, and the safety component and the gas pressure safety mechanism (2) are respectively located on both sides of the slider (7); an electric detonator (12) disposed within the fuse body (1), when the slider (7) is in the safety position, the initiating explosive charge (8) is offset from the electric detonator (12), and after the slider (7) is unlocked, it slides to the detonation position under the action of the power assembly, and when the slider (7) is in the detonation position, the initiating explosive charge (8) contacts the electric detonator (12).

2. The gas pressure insurance device according to claim 1, characterized in that, The gas pressure safety mechanism (2) includes a safety housing (201) fixedly embedded in the fuse body (1), one end of the safety housing (201) close to the outside of the fuse body (1) is fixedly connected to a safety base (205) through a base screw (204), a piston rod (207) is slidably disposed inside the safety housing (201), an elastic component is provided at one end of the piston rod (207) away from the safety base (205), a limiting component is provided at one end of the safety housing (201) away from the safety base (205), the limiting component cooperates with the end of the piston rod (207), and a clamping component is provided on the limiting component, one end of the clamping component is located inside the safety housing (201), and the other end of the clamping component is located inside the slider (7).

3. A gas pressure insurance device according to claim 2, characterized in that, The limiting component includes a shear pin (202), the shear pin (202) is U-shaped, the horizontal section of the shear pin (202) is located inside one end of the safety housing (201) and passes through the end of the piston rod (207), and the two vertical sections of the shear pin (202) are respectively located on both sides outside the safety housing (201), and the clamping component is provided on the horizontal section of the shear pin (202).

4. The gas pressure insurance device according to claim 3, characterized in that, The clamping component includes a safety rod (209), one end of the safety rod (209) is located inside the safety housing (201) and is connected to the horizontal section of the shear pin (202), the other end of the safety rod (209) is located inside the slider (7) and a blind hole is provided on its side wall, one end of a small spring (211) is fixedly connected to the side wall of the blind hole, and the other end of the small spring (211) is fixedly connected to a steel ball (210), and the steel ball (210) is movably disposed within the blind hole.

5. A gas pressure insurance device according to claim 2, characterized in that, The elastic component includes a spring (208), the spring (208) is sleeved outside the piston rod (207), one end of the spring (208) is fixedly connected to the convex surface of the outer wall of the piston rod (207), and the other end of the spring (208) is fixedly connected to the inner wall of the safety housing (201).

6. The gas pressure insurance device according to claim 2, wherein A sealing ring (203) is arranged between the inner side wall of the safety housing (201) and the outer side wall of the piston rod (207).

7. A gas pressure insurance device according to claim 2, characterized in that, A filter screen (206) is arranged on the safety base (205).

8. A gas pressure insurance device according to claim 1, characterized in that, The safety component includes a status switch (9) and a detacher (10), the status switch (9) and the detacher (10) are arranged side by side on the same side of the slider (7), one end of the detacher (10) is clamped to the slider (7), and a detacher fixing nut (11) is arranged at the other end of the detacher (10).

9. The gas pressure insurance device according to claim 1, characterized in that, A sliding cavity is formed in the fuse body (1), the slider (7) is slidably arranged in the sliding cavity, a pressing plate (4) is arranged at the open end of the sliding cavity, and the pressing plate (4) is fixedly connected to the fuse body (1) by screws (5).

10. A gas pressure insurance device according to claim 9, characterized in that, The power component includes a push spring (6), one end of the push spring (6) is fixedly connected to the side wall of the sliding cavity, and the other end of the push spring (6) is fixedly connected to the slider (7).

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