An adjustable air-blowing fuze unlocking test device

Abstract

The present invention relates to an adjustable blowing-type fuze unlocking test device. It comprises a central rod, one end of which is connected to a front end nose cone, and the other end is connected to a stabilizing device, a counterweight block is connected to the central rod on one side close to the front end nose cone, and a fuze connecting rod is arranged on the central rod on the side opposite to the counterweight block, and a fuze connecting interface is arranged at the end of the fuze connecting rod for connecting the fuze. Its beneficial effects are: simple structure, small size, and easy installation; it has adjustability, can adjust the structure according to different test requirements, and has a wide range of applications; it is easy to operate and can be dropped by a small drone; it has good overall aerodynamic performance, and the structure can be quickly stabilized after being dropped to ensure that the device falls vertically; when the ground conditions of the test environment are sand, soil, etc., the test device can be recycled and reused, reducing the test cost.

Description

Technical Field

[0001] The invention belongs to the technical field of fuze unlocking performance testing devices, and in particular relates to an adjustable air-blowing fuze unlocking test device. Background Art

[0002] In the field of fuze design, it is necessary to conduct unlocking tests on the designed fuzes according to different usage environments to verify the unlocking reliability of the fuzes in the usage environment.

[0003] The air-blowing unlocking fuze is usually tested by wind tunnel blowing and centrifugal ignition. The above methods have the disadvantages of high test equipment requirements and high test costs. For the air-blowing fuze that is dropped from low altitude and acts at low speed, the unlocking test urgently needs a test device with simple structure, simple test conditions, wide application range, low cost and high practicality. Summary of the invention

[0004] In order to improve the deficiencies of the prior art, the present invention aims to provide an adjustable air-blowing fuze unlocking test device, which can be dropped by a small unmanned aerial vehicle and can maintain a stable vertical fall during the dropping process.

[0005] To achieve the above-mentioned objectives, the present invention provides an adjustable blow-type fuze unlocking test device, comprising a center rod, one end of the center rod is connected to a front end nose cone, and the other end is connected to a stabilizing device, a counterweight block is connected to the center rod on one side close to the front end nose cone, and a fuze connecting rod is arranged on the center rod on the opposite side of the counterweight block, and a fuze connecting interface is arranged at the end of the fuze connecting rod for connecting the fuze.

[0006] Furthermore, the stabilizing device comprises a wing fixing ring threadedly connected to the central rod and swept-back winglets evenly distributed around the central rod, and the swept-back winglets are fixedly connected to the wing fixing ring by screws.

[0007] Furthermore, the number of the swept-back winglets is 4, 6 or 8.

[0008] Furthermore, the center rod is threadedly connected to the front end nose cone and the stabilizing device.

[0009] Furthermore, the counterweight block is fixedly connected to the center rod at a certain angle via screws.

[0010] Furthermore, the fuze connecting rod is fixedly connected to the center rod at a certain angle by screws.

[0011] Furthermore, the screw may be equipped with a flat washer and a spring washer.

[0012] Furthermore, the connection mode of the fuze connection interface is threaded connection, screw connection or clamping connection.

[0013] Furthermore, the front end nose cone is a hemispherical nose cone.

[0014] Furthermore, it also includes a hook rod arranged on the central rod near one end of the stabilizing device, the hook rod is threadedly connected to the central rod, and a hanging hole is arranged at one end of the hook rod.

[0015] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects:

[0016] 1. Simple structure, small size and easy installation;

[0017] 2. It is adjustable and can be structurally adjusted according to different test requirements, with a wide range of applications;

[0018] 3. Easy to operate, and can be delivered by small drones;

[0019] 4. The overall aerodynamic performance is good, and the structure can quickly stabilize after being launched to ensure that the device falls vertically;

[0020] 5. When the ground conditions of the test environment are sand, soil, etc., the test device can be recycled and reused, reducing the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an adjustable air-blowing fuze unlocking test device of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the fuze connecting rod of the present invention;

[0023] Figure 3 It is a cross-sectional view of the fuse connecting rod of the present invention.

[0024] Among them: 1-center rod, 2-front end nose cone, 3-stabilizing device, 301-wing fixing ring, 302-swept wing, 4-counterweight, 5-fuze connecting rod, 501-fuze connecting interface, 6-fuze, 7-screw, 8-hook rod, 801-hanging hole, 9-threaded hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0026] like Figure 1 As shown, the present invention provides an adjustable blowing-type fuze unlocking test device, comprising a center rod, one end of the center rod is connected to a front end nose cone, and the other end is connected to a stabilizing device, a counterweight block is connected to the center rod on one side close to the front end nose cone, and a fuze connecting rod is arranged on the center rod on the opposite side of the counterweight block, and a fuze connecting interface is arranged at the end of the fuze connecting rod for connecting the fuze.

[0027] To ensure that the test device can fall vertically stably during the release process, the stabilizing device includes a wing fixing ring threadedly connected to the center rod and swept wings evenly distributed around the center rod. The swept wings are fixedly connected to the wing fixing ring by screws.

[0028] As a preferred solution of the present invention, the number of swept-back winglets is 4, 6 or 8.

[0029] To ensure the stability of the connection, the center rod, front end cone and stabilizing device are all connected by threads.

[0030] As a preferred solution of the present invention, the counterweight block is fixedly connected to the center rod at a certain angle by screws. The center of mass of the test device can be adjusted by replacing counterweight blocks of different weights to ensure that the center of mass of the test device is at the center of the center rod, so that the test device can remain stable during the falling process.

[0031] like Figure 2 , Figure 3 As shown, as a preferred solution of the present invention, the fuze connecting rod and the center rod are fixedly connected by screws at a certain angle, and the angle α between the fuze connecting rod and the center rod can be adjusted by replacing fuze connecting rods of different structures to meet the test requirements of different fuze falling angles.

[0032] In order to increase the stability factor and make the connection more secure, the screws can be equipped with flat washers and spring washers.

[0033] As a preferred solution of the present invention, in order to make the fuze connecting rod have a wider application range, the connection mode of the fuze connecting interface can be designed as a threaded connection, a screw connection or a clamping connection.

[0034] As a preferred solution of the present invention, in order to make the test device have a better aerodynamic shape, reduce the aerodynamic resistance of the small test device, and facilitate the stability of the falling process of the test device, the front end head cone adopts a hemispherical head cone, which is connected to the center rod in a threaded manner. At the same time, thread locking glue can be used for auxiliary fixation.

[0035] To facilitate the aerial delivery of the test device, it also includes a hook rod arranged on the center rod near one end of the stabilizing device. The hook rod is threadedly connected to the center rod, and a hanging hole is arranged at one end of the hook rod. The test device is connected to the delivery drone through the hanging hole. When the drone rises to the required height, the drone is remotely operated to complete the unhooking action and deliver the test device. After the test device lands, it is confirmed whether the fuse is unlocked and the test device is recovered.

[0036] In summary, the test device has a simple structure and is easy to install. Fuze connecting rods, counterweights and other components of different specifications can be selected according to test needs to meet the test requirements of fuze blowing and unlocking under different falling speeds and angles, and can be recycled and reused.

[0037] The preferred embodiments of the present invention are described in detail above; however, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. An adjustable blowing type fuze unlocking test device, characterized in that: It comprises a central rod, one end of which is connected to a front nose cone, and the other end is connected to a stabilizing device, a counterweight is connected to the central rod near the front nose cone, a fuze connecting rod is arranged on the central rod on the side opposite to the counterweight, and a fuze connecting interface is arranged at the end of the fuze connecting rod for connecting the fuze; The counterweight block is fixedly connected to the center rod at a certain angle by screws; The fuze connecting rod is fixedly connected to the central rod at a certain angle by screws; It also includes a hook rod arranged on the central rod near one end of the stabilizing device, the hook rod is threadedly connected to the central rod, and one end of the hook rod is provided with a hanging hole.

2. The adjustable blowing type fuze unlocking test device according to claim 1, characterized in that: The stabilizing device comprises a wing fixing ring threadedly connected to the central rod and swept-back winglets evenly distributed around the central rod, wherein the swept-back winglets are fixedly connected to the wing fixing ring by screws.

3. The adjustable blowing type fuze unlocking test device according to claim 2, characterized in that: The number of the swept-back winglets is 4, 6 or 8.

4. The adjustable blowing type fuze unlocking test device according to claim 1, characterized in that: The central rod is threadedly connected to the front end nose cone and the stabilizing device.

5. The adjustable blowing type fuze unlocking test device according to claim 1, characterized in that: The screws can be equipped with flat washers and spring washers.

6. The adjustable blowing type fuze unlocking test device according to claim 1, characterized in that: The connection mode of the fuze connection interface is threaded connection, screw connection or clamping connection.

7. The adjustable blowing type fuze unlocking test device according to claim 1, characterized in that: The front end nose cone is a hemispherical nose cone.

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