Inertia safety mechanism capable of being repeatedly detected for ammunition

Abstract

The invention discloses an inertia safety mechanism capable of being repeatedly detected for ammunition, which serves as a first safety for rotation of a rotor part, and belongs to the technical field of ammunition safety systems. A body seat is fixedly connected with a body through a screw, and is provided with an operation cavity of an inertia block and an inertia spring; a cavity capable of containing a gunpowder pin puller and an electric detonator is formed in the body; the gunpowder pin puller serves as a second fuse of the rotor part, the electric detonator is used for detonating explosives contained in the rotor part, an operation cavity of the rotor part and a cavity capable of containing an electromagnetic pin puller locking ring groove are formed in the body base, and the electromagnetic pin puller locking ring groove is used for locking the inertia block so that the inertia block can be in a fuse state or an unfuse state. The device has the beneficial effect that the problem that the insurance releasing condition or the insurance releasing time of a conventional ammunition inertia insurance mechanism cannot be detected is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ammunition safety systems, in particular to an inertial safety mechanism for ammunition that can be repeatedly detected. Background Art

[0002] According to GJB373B-2019 "Fuse Safety Design Criteria", fuses used for ammunition require two independent safeties. Among them, high-value ammunition (such as missiles or rockets) has a relatively stable engine flight overload environmental force. Therefore, people often use the engine flight overload environmental force as one of the independent safeties (inertial safety mechanism), and the other safety is a powder detent. Such high-value ammunition has high requirements for the reliability of supporting components. The commonly used inertial safety mechanism cannot simulate the real situation to detect the arming situation, resulting in certain risks for the delivered products. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art. This inertial safety mechanism can not only detect its arming performance under overload conditions, but also detect its arming time under this overload condition, thereby providing experimental support for the realization of the arming function of the inertial safety mechanism. An inertial safety mechanism for ammunition that can be repeatedly detected.

[0004] The purpose of the present invention is achieved through the following technical solutions: An inertial safety mechanism for ammunition that can be repeatedly detected, including a body and a body seat. The body and the body seat are connected by screws. An inertial block is provided inside the body and the body seat. A cavity one is provided inside the body, and a cavity two is provided on the inner part of the body seat; Preferably, the diameter of the cavity one is larger than the diameter of the cavity two. The cavity one and the cavity two are arranged on the same axis. The inertial block is provided with a first part, a second part, a third part, a fourth part, a fifth part, a sixth part, and a seventh part. The cross-section of the seventh part is an inverted V shape. The diameters of the fourth part and the sixth part are the same. The diameter of the fifth part is smaller than the diameters of the fourth part and the sixth part. An electromagnetic detent locking groove is provided on the side wall of the fourth part, and an inertial spring is provided below the seventh part.

[0005] Preferably, the cavity one and the cavity two are interconnected, and a rotor cavity is provided at the connection between the cavity one and the cavity two. A rotor component is provided inside the rotor cavity. In the natural state, the inertial block restricts the explosive and the electric detonator in the rotor component to be in a physically isolated state; in the armed state, the restraint of the inertial block on the rotor component is cancelled, and when the powder detent pulls out the pin, the rotor component is driven by a torsion spring to align the internal explosive and the electric detonator.

[0006] Preferably, the inertial mass is in a predetermined position under the resistance of the inertial spring in the natural state and is locked by the electromagnetic detent lock groove at the same time. The electromagnetic detent lock groove is fixed on the body seat by a compression screw.

[0007] Preferably, the diameter of the first part is larger than that of the fourth part, and the first part is located inside the first cavity. One end of the inertial spring is fixed at the bottom of the second cavity, and the other end abuts against the top surface of the seventh part.

[0008] Preferably, the diameter of the second part is smaller than that of the third part, and the diameter of the third part is smaller than that of the fourth part.

[0009] Preferably, a cavity for installing a powder detent and an electric detonator is provided inside the body, and a cavity for installing an electromagnetic detent lock groove is provided inside the body seat. The electromagnetic detent lock groove is used to lock the inertial mass in the safe state or the armed state.

[0010] The present invention has the following advantages: 1. Under the condition of engine overload, after the electromagnetic detent lock groove in the inertial safety mechanism obtains the electric energy from the ammunition fuzing and control system, the pin of the electromagnetic detent lock groove retracts, and the inertial mass compresses the inertial spring and moves. After a certain period of time, the inertial mass moves into place, and the electromagnetic detent lock groove is powered off by the ammunition fuzing and control system, and the pin of the electromagnetic detent lock groove pops out, thereby blocking the rebound of the inertial mass after the engine overload disappears; by controlling the power supply and power-off time interval of the electromagnetic detent lock groove by the ammunition fuzing and control system, the armed time under the overload condition can be detected.

[0011] 2. The inertial safety mechanism of the present invention not only has the ability to detect its armed performance under the overload condition, but also can detect its armed time under this overload condition, thus providing experimental support for the realization of the armed function of the inertial safety mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram before the inertial mass is armed in the present invention; Figure 2 is a schematic diagram during the armed process of the inertial mass in the present invention; Figure 3 is a schematic diagram after the inertial mass is armed in the present invention.

[0013] In the figure, body 1, body seat 2, first cavity 3, second cavity 4, first part 5, second part 6, third part 7, fourth part 8, fifth part 9, sixth part 10, seventh part 11, electromagnetic detent lock groove 12, inertial spring 13, rotor cavity 14, rotor component 15. DETAILED DESCRIPTION OF THE INVENTION

[0014] The following further describes the present invention in conjunction with the accompanying drawings. The protection scope of the present invention is not limited to the following: As Figures 1 to 3 shown, a reusable inertial safety mechanism for ammunition includes a body 1 and a body seat 2. The body 1 and the body seat 2 are connected by screws. An inertial block is provided inside the body 1 and the body seat 2. A cavity one 3 is provided inside the body 1, and a cavity two 4 is provided on the inner upper part of the body seat 2; In this embodiment, the diameter of the cavity one 3 is larger than that of the cavity two 4. The cavity one 3 and the cavity two 4 are arranged on the same axis. The inertial block is provided with a first part 5, a second part 6, a third part 7, a fourth part 8, a fifth part 9, a sixth part 10, and a seventh part 11. The cross-section of the seventh part 11 is an inverted V shape. The diameters of the fourth part 8 and the sixth part 10 are the same and form a limiting groove into which the pin at the end of the electromagnetic detent lock ring groove 12 can be inserted. The diameter of the fifth part 9 is smaller than those of the fourth part 8 and the sixth part 10. An electromagnetic detent lock ring groove 12 is provided on the side wall of the fourth part 8. An inertial spring 13 is provided below the seventh part 11. The diameters of the second part 6 and the third part 7 are different to form a limiting groove.

[0015] In this embodiment, the cavity one 3 and the cavity two 4 are in communication with each other, and a rotor cavity 14 is provided at the connection between the cavity one 3 and the cavity two 4. A rotor component 15 is provided inside the rotor cavity 14. In the natural state, the inertial block restricts the rotor component 15 to be in a stationary state.

[0016] In this embodiment, the inertial block is in a predetermined position under the resistance of the inertial spring 13 in the natural state and is locked by the electromagnetic detent lock ring groove 12 at the same time. The electromagnetic detent lock ring groove 12 is fixed on the body seat 2 by a compression screw.

[0017] In this embodiment, the diameter of the first part 5 is larger than that of the fourth part 8, and the first part 5 is located inside the cavity one 3. One end of the inertial spring 13 is fixed at the bottom of the cavity two 4, and the other end abuts against the top surface of the seventh part 11.

[0018] In this embodiment, the diameter of the second part 6 is smaller than that of the third part 7, and the diameter of the third part 7 is smaller than that of the fourth part 8.

[0019] In this embodiment, a cavity for installing a powder detent and an electric detonator is provided inside the body 1, and a cavity for installing the electromagnetic detent lock ring groove 12 is provided inside the body seat 2. The electromagnetic detent lock ring groove 12 is used to lock the inertial block in the safety state or the deactivated state.

[0020] The principle of the present invention is as follows: Under the condition of engine overload, after the locking ring groove 12 of the electromagnetic pin puller in the inertial safety mechanism obtains the electric energy from the ammunition fuzing and control system, the pin of the locking ring groove 12 of the electromagnetic pin puller retracts, and the inertial block compresses the inertial spring 13 and moves. After a certain period of time, when the inertial block moves into place, the locking ring groove 12 of the electromagnetic pin puller is powered off through the ammunition fuzing and control system, and the pin of the locking ring groove 12 of the electromagnetic pin puller pops out, thus blocking the rebound of the inertial block after the engine overload disappears.

[0021] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended 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 modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A repeatedly detectable inertial safety mechanism for ammunition, characterized in that: It comprises a body and a body seat, wherein the body and the body seat are connected by screws, an inertia block is arranged inside the body and the body seat, a cavity 1 is arranged inside the body, and a cavity 2 is arranged inside the body seat; The diameter of cavity one is greater than that of cavity two, and cavity one and cavity two are arranged on the same axis. The inertia block comprises a first part, a second part, a third part, a fourth part, a fifth part, a sixth part and a seventh part, and the cross-section of the seventh part is an inverted V shape. The diameters of the fourth part and the sixth part are the same, and the diameter of the fifth part is smaller than the diameters of the fourth part and the sixth part. An electromagnetic pin puller locking ring groove is provided on the side wall of the fourth part, and an inertia spring is provided under the seventh part.

2. The repeatedly detectable inertia safety mechanism for ammunition according to claim 1, characterized in that: The cavity one and the cavity two are interconnected, and a rotor cavity is provided at the connection between the cavity one and the cavity two, and a rotor component is provided inside the rotor cavity. In a natural state, the inertia block constrains the explosive and the electric detonator in the rotor component to be in a physically isolated state; in a released state, the constraint of the inertia block on the rotor component is cancelled, and when the gunpowder pin puller pulls the pin, the rotor component is driven by a torsion spring to align the internal explosive and the electric detonator.

3. The repeatedly detectable inertia safety mechanism for ammunition according to claim 2, characterized in that: The inertia block is in a predetermined position under the resistance of the inertia spring in a natural state, and is locked by a locking ring groove of an electromagnetic pin puller, and the locking ring groove of the electromagnetic pin puller is fixed on the body seat by a pressing screw.

4. The repeatedly detectable inertia safety mechanism for ammunition according to claim 1, characterized in that: The diameter of the first part is greater than the diameter of the fourth part, and the first part is located inside the cavity one. One end of the inertia spring is fixed to the bottom of the cavity two, and the other end is in conflict with the top surface of the seventh part.

5. The repeatedly detectable inertia safety mechanism for ammunition according to claim 1, characterized in that: The diameter of the second portion is smaller than the diameter of the third portion, and the diameter of the third portion is smaller than the diameter of the fourth portion.

6. The repeatedly detectable inertia safety mechanism for ammunition according to claim 1, characterized in that: The body is provided with a cavity for accommodating a gunpowder pin puller and an electric detonator, the body seat is provided with a cavity for accommodating a locking ring groove of an electromagnetic pin puller, and the locking ring groove of the electromagnetic pin puller is used to lock the inertia block in a safe state or a released state.

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