Device for testing friction safety of explosives and powders
By designing a fire explosive friction safety test device, the transparent friction wheel, rotating drive member and camera are used to record images and data during the friction process, the problem of incomplete monitoring of the friction process of solid propellant in the prior art is solved, and detailed recording and safety evaluation of its status are achieved.
Patent Information
- Application Number
- CN202510648567.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-20
- Publication Date
- 2025-08-08
AI Technical Summary
The prior art is difficult to effectively monitor and record the ignition, combustion and explosion status of solid propellants during friction, resulting in insufficient comprehensive safety testing.
A fire explosive friction safety test device is designed, including a transparent friction wheel, a rotating drive member, a camera, a reflective member and a pressure applying member. The sample is applied by rotating the friction wheel, and the image and data during the friction process are recorded using the camera, and real-time monitoring is carried out in combination with a torque sensor and an infrared temperature detector.
It provides a detailed record of the state of solid propellant during friction, helps to understand its safety, provides a theoretical basis for production, processing, transportation and storage, and improves the comprehensiveness and reliability of safety testing.
Smart Images
Figure CN120445972A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of energetic material testing, in particular to a device for testing the friction safety of explosives. Background Art
[0002] The safety performance of solid propellants refers to their susceptibility to combustion or explosion under the influence of various external energy sources (such as impact, friction, heat, static sparks, shock waves, and bullet fire). This is also known as hazard performance or sensitivity. Therefore, in the application of solid propellants, they are generally required to possess two properties: on the one hand, they must have considerable energy to ensure sufficient work capacity; on the other hand, they must also have a certain level of safety to ensure that no dangerous accidents will occur during their production, processing, storage, transportation, or use.
[0003] Solid propellants are a common source of high-energy chemical power in modern advanced weapon systems, but they are also highly hazardous chemical explosives. While most propellants exhibit excellent chemical stability at room temperature, they can be subject to various environmental and environmental stimuli during production, processing, transportation, storage, and use. These stimuli can induce violent reactions such as breakage, ignition, combustion, and explosion, potentially leading to serious safety incidents. Friction is a common form of these stimuli, making the study of friction-induced ignition reactions in solid propellants of great significance. Summary of the Invention
[0004] The purpose of the present invention is to provide a friction safety testing device for explosives to solve the above problems. By setting various monitoring components, the purpose of monitoring the ignition state of energetic materials under friction state is achieved.
[0005] To achieve the above object, the present invention provides the following solutions:
[0006] A friction safety test device for explosives includes a control cabinet, a friction wheel rotatably provided on the top surface of the control cabinet, the friction wheel being a transparent structure, a rotary drive member axially connected to one side of the friction wheel for causing it to rotate, a camera provided on the other side of the friction wheel, the camera mounted on the top surface of the control cabinet, a reflective component for reflecting the explosion state of the explosive provided inside the friction wheel, the reflective component being used to reflect the image of the explosion state of the explosive to the camera, a sample placement component provided below the friction wheel, a pressure applying component provided inside the sample placement component, the rotary drive member, the camera, and the pressure applying component being electrically connected to a controller mounted inside the control cabinet.
[0007] Preferably, the rotating drive component includes a stepper motor installed on the top surface of the control cabinet, the stepper motor is connected to a rotating shaft through a coupling, the rotating shaft is rotatably installed on a bearing seat, and the end of the rotating shaft away from the stepper motor is connected to a torque sensor, the torque sensor is electrically connected to the controller, and the torque sensor is connected to the friction wheel shaft.
[0008] Preferably, the reflective component includes a reflective plate, the reflective plate is a conical structure, and the small end of the reflective plate faces the camera.
[0009] Preferably, the sample placement component includes a sample holder, the sample holder is mounted on the top surface of the control cabinet, and the movable end of the pressure applying member is vertically slidably disposed inside the sample holder.
[0010] Preferably, the pressure applying member includes an electric telescopic rod installed inside the control cabinet, the telescopic direction of the electric telescopic rod is vertically arranged, the movable end of the electric telescopic rod is fixedly connected to a pressure sensor, the top surface of the pressure sensor is fixedly connected to a lifting column, the top surface of the lifting column is fixedly connected to a movable block, the movable block is vertically slidably connected in the sample holder, and the electric telescopic rod, pressure sensor and the controller are electrically connected.
[0011] Preferably, two guide posts are fixedly connected to the bottom surface of the lifting post, and the guide posts are vertically slidably connected to the sample holder.
[0012] Preferably, an infrared temperature detector is fixedly connected to the outer side wall of the movable block, and the infrared temperature detector is located at the height where the friction wheel contacts the sample.
[0013] The present invention has the following technical effects:
[0014] The present invention drives the friction wheel to rotate through a rotating driving member, places the sample on the sample placement member, and applies a certain pressure to the sample through a pressure applying member. Then, the friction wheel rotates to achieve friction of the sample. The reflective member on the friction wheel can reflect the image state of the sample after friction to a camera, and the camera is used to capture and record the relevant image. This provides great convenience for recording the states of breakage, ignition, combustion, explosion, etc. of the solid propellant during the friction process, and can provide a theoretical basis and foundation for the production, processing, transportation, and storage of solid propellants. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0016] Figure 1 It is a schematic diagram of the structure of the present invention;
[0017] Figure 2 This is a schematic diagram of the measuring mechanism structure of the present invention;
[0018] Figure 3 is an axonometric drawing of the measuring mechanism of the present invention;
[0019] Figure 4 Schematic diagram of the structure of the pressure applying member of the present invention.
[0020] Among them, 1. Control cabinet; 2. Stepper motor; 3. Coupling; 4. Bearing seat; 5. Torque sensor; 6. Friction wheel; 7. Sample holder; 8. Movable block; 9. Guide column; 10. Lifting column; 11. Electric telescopic rod; 12. Infrared temperature detector; 13. Pressure sensor; 14. Camera; 15. Reflector. DETAILED DESCRIPTION
[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Reference Figure 1-4 As shown, the explosive friction safety test device provided in this embodiment includes a control cabinet 1. A friction wheel 6 is rotatably provided on the top surface of the control cabinet 1. The friction wheel 6 is a transparent structure. A rotary drive member is axially connected to one side of the friction wheel 6 to rotate the friction wheel 6. A camera 14 is provided on the other side of the friction wheel 6. The camera 14 is mounted on the top surface of the control cabinet 1. A reflective component for reflecting the explosion state of the explosive is provided inside the friction wheel 6. The reflective component is used to reflect the image of the explosion state of the explosive to the camera 14. A sample placement component is provided below the friction wheel 6. A pressure applying component is provided inside the sample placement component. The rotary drive member, the camera 14, and the pressure applying component are electrically connected to a controller, which is mounted inside the control cabinet 1.
[0024] The present invention drives the friction wheel 6 to rotate by a rotating driving member, places the sample on the sample placement member, and applies a certain pressure to the sample through the pressure applying member. Then, the friction wheel 6 rotates to achieve friction of the sample. The reflective member on the friction wheel 6 can reflect the image state of the sample after friction to the camera 14, and the camera 14 is used to capture and record the relevant image. This provides great convenience for recording the states of damage, ignition, combustion, explosion, etc. of the solid propellant during the friction process, and can provide a theoretical basis and foundation for the production, processing, transportation, and storage of solid propellants.
[0025] A further optimized solution is that the rotating drive component includes a stepper motor 2 installed on the top surface of the control cabinet 1. The stepper motor 2 is connected to a rotating shaft through a coupling 3. The rotating shaft is rotatably installed on a bearing seat 5. The end of the rotating shaft away from the stepper motor 2 is connected to a torque sensor 5. The torque sensor 5 is electrically connected to the controller, and the torque sensor 5 is connected to the friction wheel 6.
[0026] The torque sensor 5 can measure the torque provided by the stepper motor 2, that is, the phase force acting on the solid propellant during the rotation of the friction wheel 6, and can provide a theoretical numerical basis for the changes occurring in the friction state of the solid propellant.
[0027] According to a further optimized solution, the reflective component includes a reflective plate 15 , which is a conical structure, with the small end of the reflective plate 15 facing the camera 14 .
[0028] The reflector 15 can reflect the state of the solid propellant under the friction wheel 6 to the camera 14, so that the camera 14 can be used to shoot and record the relevant state of the solid propellant, and record it in conjunction with the data transmitted by the torque sensor 5, providing a theoretical numerical basis for research.
[0029] In a further optimized solution, the sample placement component includes a sample holder 7 , which is mounted on the top surface of the control cabinet 1 , and the movable end of the pressure applying member is vertically slidably disposed inside the sample holder 7 .
[0030] A further optimized solution is provided, in which the pressure applying member includes an electric telescopic rod 11 installed inside the control cabinet 1. The telescopic direction of the electric telescopic rod 11 is vertically arranged. The movable end of the electric telescopic rod 11 is fixedly connected to a pressure sensor 13. The top surface of the pressure sensor 13 is fixedly connected to a lifting column 10. The top surface of the lifting column 10 is fixedly connected to a movable block 8. The movable block 8 is vertically slidably connected to the sample holder 7. The electric telescopic rod 11 and the pressure sensor 13 are electrically connected to the controller.
[0031] The electric telescopic rod 11 is provided to provide a vertical upward force to the movable block 8, and the movable block 8 is used to transmit the force to the sample (i.e., solid propellant), so that the ignition, combustion, etc. of the solid propellant can be obtained under different pressures.
[0032] According to a further optimized solution, two guide posts 9 are fixedly connected to the bottom surface of the lifting post 10 , and the guide posts 9 are vertically slidably connected to the sample holder 7 .
[0033] As a further optimization, an infrared temperature detector 12 is fixedly attached to the outer wall of movable block 8, located at the height where friction wheel 6 makes contact with the sample. This infrared temperature detector 12 can measure the sample's temperature during friction or combustion, providing more data support for solid propellant research.
[0034] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present invention.
[0035] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.
Claims
1. Fire and explosive friction safety test device, characterized in that: The invention comprises a control cabinet (1), wherein a friction wheel (6) is rotatably provided on the top surface of the control cabinet (1), wherein the friction wheel (6) is a transparent structure, wherein a rotating driving member for rotating the friction wheel (6) is connected to a shaft on one side of the friction wheel (6), wherein a camera (14) is provided on the other side of the friction wheel (6), wherein the camera (14) is installed on the top surface of the control cabinet (1), wherein a reflective component for reflecting the explosion state of the explosive is provided inside the friction wheel (6), wherein the reflective component is used to reflect the image of the explosion state of the explosive to the camera (14), wherein a sample placement component is provided below the friction wheel (6), wherein a pressure applying member is provided inside the sample placement component, wherein the rotating driving member, the camera (14) and the pressure applying member are electrically connected to a controller, wherein the controller is installed inside the control cabinet (1).
2. The explosive friction safety testing device according to claim 1, characterized in that: The rotary drive component comprises a stepper motor (2) mounted on the top surface of the control cabinet (1); the stepper motor (2) is connected to a rotating shaft via a coupling (3); the rotating shaft is rotatably mounted on a bearing seat (5); an end of the rotating shaft away from the stepper motor (2) is axially connected to a torque sensor (4); the torque sensor (4) is electrically connected to the controller; and the torque sensor (4) is axially connected to the friction wheel (6).
3. The explosive friction safety testing device according to claim 1, characterized in that: The reflective component comprises a reflective plate (15), the reflective plate (15) is a conical structure, and the small end of the reflective plate (15) faces the camera (14).
4. The explosive friction safety testing device according to claim 1, characterized in that: The sample placement component comprises a sample holder (7), the sample holder (7) is mounted on the top surface of the control cabinet (1), and the movable end of the pressure applying member is vertically slidably arranged inside the sample holder (7).
5. The explosive friction safety testing device according to claim 4, characterized in that: The pressure applying member comprises an electric telescopic rod (11) installed inside the control cabinet (1), wherein the electric telescopic rod (11) is arranged vertically in the telescopic direction, and the movable end of the electric telescopic rod (11) is fixedly connected to a pressure sensor (13), and the top surface of the pressure sensor (13) is fixedly connected to a jacking column (10), and the top surface of the jacking column (10) is fixedly connected to a movable block (8), wherein the movable block (8) is a T-shaped structure, and the movable block (8) is vertically slidably connected to the sample holder (7), and the electric telescopic rod (11), the pressure sensor (13) and the controller are electrically connected.
6. The explosive friction safety testing device according to claim 5, characterized in that: The bottom surface of the lifting column (10) is fixedly connected to two guide columns (9), and the guide columns (9) are vertically slidably connected to the sample holder (7).
7. The explosive friction safety testing device according to claim 1, characterized in that: An infrared temperature detector (12) is provided on one side of the friction wheel (6), and the infrared temperature detector (12) is located at a height where the friction wheel (6) contacts the sample.