Portable mortar anti-refilling detection device for frontier defense

By designing a portable mortar shell anti-reloading detection device, which uses sensors to detect system status and chamber pressure, the safety risk of repeated loading caused by gunners relying on experience to judge is solved. It realizes real-time monitoring and display of loading status, improving shooting safety and soldier accuracy.

CN224230844UActive Publication Date: 2026-05-12CHINESE PEOPLES LIBERATION ARMY ARMY BORDER & COASTAL DEFENSE ACAD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHINESE PEOPLES LIBERATION ARMY ARMY BORDER & COASTAL DEFENSE ACAD
Filing Date
2025-07-28
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

During combat or training, mortar operators rely on careful inspection and experience to determine whether ammunition has been reloaded, which poses a safety risk, and there is a lack of effective technical means to avoid this problem.

Method used

Design a portable border defense mortar shell anti-reloading detection device, including a casing, a central clamping component, a fixing component, an iris closure component, and a driving component. The device uses sensors to detect the system status and chamber pressure, monitors and displays the loading status in real time, and prevents reloading.

Benefits of technology

It enables real-time display of the ammunition loading status inside the mortar barrel, reducing misjudgments, alleviating soldier panic, preventing shooting safety incidents, and improving operational safety and accuracy.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of mortar, and provides a frontier defense portable mortar shell anti-refilling detection device which comprises a mortar body. The sleeve shell is arranged on the gun barrel in a sleeving manner; the centering clamping assembly is arranged on the sleeve shell; the fixing assemblies are symmetrically arranged on the centering clamping assembly and used for fixing the sleeve shell; a power switch is manually pressed to activate a detection mechanism in a sleeve shell, then a system self-inspection indicator light is lightened after two seconds, so that whether the detection mechanism is normal or not is checked, then when a filling safety indicator light turns green, a driving assembly drives a blade of an iris closing assembly to retract, and shells can be normally filled; on the contrary, when the red is bright, the driving assembly does not work, the iris closing assembly continues to be closed, and shell filling is stopped, so that the shell filling condition in the mortar barrel can be displayed in real time, soldiers can conveniently and accurately recognize whether the bullets are excited or not, the panic psychology of live shell shooting training of the soldiers is relieved, and shooting safety accidents are prevented.
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Description

Technical Field

[0001] This utility model relates to the field of mortar technology, specifically to a portable border defense mortar shell anti-reloading detection device. Background Technology

[0002] Mortars are a common heavy firepower of the army's border defense forces. They are powerful, easy to operate, and flexible in use, making them popular with the troops. However, because a large number of munitions are fired in a single operation or training, the noise generated is mixed and dense. If the gunner fails to fire the munitions due to other reasons, he may be affected by the sound of mortars from adjacent positions, leading to misjudgment and repeated loading, which poses a safety risk.

[0003] Currently, mortars mainly rely on the gunner's careful inspection and artillery firing experience to make judgments. Sometimes it is necessary to observe the relevant conditions inside the barrel with the naked eye. This is directly related to the gunner's mental state and level of care. At present, there is no good technical method to avoid this safety risk. Utility Model Content

[0004] This utility model proposes a portable mortar shell anti-reloading detection device for border defense, which solves the problem that the relevant technology mainly relies on the gunner's careful inspection and artillery firing experience to judge, and sometimes needs to observe the relevant conditions inside the barrel with the naked eye. This is directly related to the gunner's mental state and level of care. At present, there is no better technical method to avoid this safety risk.

[0005] The technical solution of this utility model is as follows: A portable border defense mortar shell anti-reloading detection device, comprising:

[0006] Mortar body;

[0007] A casing fitted onto the gun barrel;

[0008] A centrally clamping assembly is provided on the housing;

[0009] A fixing component symmetrically arranged on the central clamping component for fixing the housing;

[0010] An iris closure assembly is disposed inside the casing;

[0011] A drive assembly is disposed on the outside of the housing, and the drive assembly is connected to the iris closure assembly;

[0012] The system also includes a power switch, a filling safety indicator light, a system self-test indicator light, a system reset button, and an excitation count display, all arranged in a circular pattern and fixedly mounted on the housing.

[0013] Preferably, the centering clamping assembly includes two fixed disks symmetrically fixedly installed on the outer side wall of the housing. Each of the two fixed disks has multiple guide rails fixedly installed in a circular array on one side. Multiple H-shaped frames are arranged in a circular array in the middle of the two fixed disks, and the H-shaped frames are slidably connected to the guide rails by sliders.

[0014] A T-shaped cylinder is rotatably mounted on the outer wall near the end of the casing. A plurality of first arc-shaped grooves are sequentially opened in a circular array on one side of the T-shaped cylinder. A T-shaped column is fixedly mounted on one side of the H-shaped frame, and the round rod at the end of the T-shaped column passes through the strip groove on the fixed plate and is inserted into the first arc-shaped groove.

[0015] Preferably, the fixing component includes a screw threaded onto the T-shaped cylinder, one end of the screw extending into the interior of the T-shaped cylinder and rotatably mounted with an arc-shaped plate, a limit rod fixedly mounted on the outer side wall of the arc-shaped plate, and the other end of the limit rod being inserted into the T-shaped cylinder.

[0016] Preferably, the iris closure assembly includes a plurality of fixed posts that are sequentially fixed in a circular array on one side of the inner wall of the housing, and a closing plate is rotatably installed on the outer side wall of each of the plurality of fixed posts, and an arc-shaped rod is rotatably hinged to the top of each of the plurality of closing plates.

[0017] An annular plate is provided on the inner side of the casing. Multiple second arc-shaped grooves are sequentially formed in a circular array on the annular plate. T-shaped rods are inserted into the inner side of each of the multiple second arc-shaped grooves. The thin end of the T-shaped rod is fixedly connected to the casing, and the other end of the arc-shaped rod is rotatably hinged to the annular plate.

[0018] Preferably, the drive assembly includes a motor fixedly mounted on the outer wall of the housing via a fixing bracket, a gear fixedly mounted on the output end of the motor, an external gear ring fixedly mounted on the outer wall of the annular plate, and the gear and the external gear ring meshing with each other.

[0019] Preferably, a protective shell is provided on the outside of the motor, and both the protective shell and the housing are provided with screw holes, and the protective shell and the housing are locked and fixed together by screws through the screw holes.

[0020] Preferably, a limiting groove is provided on the protective shell, and a limiting block is fixedly installed on the outer side wall of the shell, and the limiting groove and the limiting block are interlocked.

[0021] The working principle and beneficial effects of this utility model are as follows:

[0022] 1. Activate the detection mechanism in the casing by manually pressing the power switch. After waiting for 2 seconds, the system self-test indicator light will illuminate to check if the detection mechanism is functioning properly. Then, when the loading safety indicator light turns green, the drive component will retract the blades of the iris closure component, allowing for normal shell loading. Conversely, when the red light illuminates, the drive component will not operate, and the iris closure component will remain closed, preventing shell loading. This allows for real-time display of the shell loading status inside the mortar barrel, facilitating accurate identification of whether the projectile has been fired by soldiers, alleviating their anxiety during live-fire training, and preventing shooting safety incidents.

[0023] 2. By using the centering clamping component, the casing fitted onto gun barrels of different sizes can be aligned with the gun barrel in a centered state. Then, through the fixing component, the casing can be stably fixed on the gun barrel, thereby avoiding the impact of misalignment between the casing and the gun barrel's firing port on the firing of the projectile. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the central clamping component proposed in this utility model;

[0027] Figure 3 A structural schematic diagram of the fixing component is provided for this utility model;

[0028] Figure 4 A schematic diagram of the casing structure is provided for this utility model;

[0029] Figure 5 This invention provides a structural schematic diagram of an iris closure assembly.

[0030] Figure 6 A cross-sectional structural diagram of the casing is provided for this utility model;

[0031] Figure 7 A structural schematic diagram of the protective shell is provided for this utility model;

[0032] Figure 8 An exploded view of the central clamping component proposed in this utility model.

[0033] In the image: 1. Mortar body; 2. Shell;

[0034] 3. Centered clamping assembly; 31. Fixing plate; 32. Guide rail; 33. H-shaped frame; 34. T-shaped cylinder; 35. First arc groove; 36. T-shaped column;

[0035] 4. Fixing components; 41. Screw; 42. Arc-shaped plate; 43. Limiting rod;

[0036] 5. Iris closure assembly; 51. Fixing post; 52. Closure plate; 53. Arc-shaped rod; 54. Annular plate; 55. Second arc-shaped groove; 56. T-shaped rod;

[0037] 6. Drive components; 61. Motor; 62. Gear; 63. External gear ring;

[0038] 7. Power switch; 8. Loading safety indicator; 9. System self-test indicator; 10. System reset button; 11. Excitation count display; 12. Protective shell; 13. Screw hole; 14. Limit groove; 15. Limit block. Detailed Implementation

[0039] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0040] Example 1

[0041] Please see Figure 1 - Figure 8 A portable border defense mortar shell anti-reloading detection device, comprising:

[0042] Mortar body 1;

[0043] The casing 2 is fitted onto the barrel;

[0044] A centrally clamping component 3 is mounted on the housing 2;

[0045] A fixing component 4 is symmetrically arranged on the centrally clamping component 3 for fixing the housing 2;

[0046] Iris closure assembly 5 is installed inside the casing 2;

[0047] The drive assembly 6 is located on the outside of the housing 2 and is connected to the iris closure assembly 5.

[0048] The power switch 7, the filling safety indicator light 8, the system self-test indicator light 9, the system reset button 10, and the excitation count display 11 are arranged in a circular pattern and fixedly installed on the housing 2.

[0049] This utility model provides a portable mortar shell anti-reloading detection device for border defense. In use, the casing 2 is manually fitted onto the barrel of the mortar body 1. Then, the centering clamping component 3 ensures that the casing 2 is aligned with the barrel. Next, the fixing component 4 secures the casing 2 firmly to the barrel. Finally, the power switch 7 is manually pressed to activate the ACS758 current sensor, DS18B20 temperature sensor, HIH-4030 humidity sensor, and ECN sensor within the casing 2. Sensors such as the 413 photoelectric encoder detect whether the power supply is stable, whether the battery is sufficient, the temperature of the circuit board or key components, whether the equipment is damp or water-infiltrated, and whether the drive mechanism 6 rotates as instructed, thereby achieving a comprehensive self-check of the detection device and ensuring reliable system operation. Simultaneously, the Kistler 603B pressure sensor on the mortar body 1 monitors the chamber pressure in real time. After a 2-second wait, the system self-check indicator 9 illuminates green to indicate normal operation, or red to indicate a fault. Then, when the loading safety indicator 8 turns green, or when the detected chamber pressure is within the normal range, the drive assembly 6 activates the iris closure assembly. The blade of component 5 retracts, allowing for normal shell loading. Conversely, when the red light illuminates or the chamber pressure detected by the Kistler 603B pressure sensor exceeds the limit, the drive assembly 6 ceases operation, and the iris closure assembly 5 remains closed, thus preventing shell loading. This allows for real-time display of the shell loading status within the mortar barrel, facilitating accurate identification of whether the projectile has been fired by soldiers, alleviating their anxiety during live-fire training, and preventing firing safety incidents. Finally, the firing count display 11 on the casing 2 displays the number of shots fired. The system reset button 10 resets the detection device status, and the charging port is used to charge the detection device.

[0050] Furthermore, the centering clamping assembly 3 includes two fixed disks 31 symmetrically fixedly installed on the outer side wall of the housing 2. On one side of each of the two fixed disks 31, multiple guide rails 32 are fixedly installed in a circular array. In the middle of the two fixed disks 31, multiple H-shaped frames 33 are arranged in a circular array, and the H-shaped frames 33 are slidably connected to the guide rails 32 by sliders.

[0051] A T-shaped cylinder 34 is rotatably mounted on the outer wall near the end of the casing 2. A plurality of first arc-shaped grooves 35 are sequentially opened in a circular array on one side of the T-shaped cylinder 34. A T-shaped column 36 is fixedly mounted on one side of the H-shaped frame 33, and the round rod at the end of the T-shaped column 36 passes through the strip groove on the fixed plate 31 and is inserted into the first arc-shaped groove 35.

[0052] Specifically, by manually rotating the T-shaped cylinder 34, the T-shaped cylinder 34 drives the round rod inserted at one end of the T-shaped column 36 under the action of the first arc groove 35. This allows the T-shaped column 36 to drive the H-shaped frame 33 to contact the barrel of the mortar body 1 under the action of the guide rail 32. This allows the casing 2, which is fitted on barrels of different sizes, to be aligned with the barrel in a centered state, avoiding misalignment between the casing 2 and the firing port of the barrel, which would affect the firing of the shell.

[0053] Furthermore, the fixing component 4 includes a screw 41 threadedly connected to the T-shaped cylinder 34. One end of the screw 41 extends into the interior of the T-shaped cylinder 34 and is rotatably mounted with an arc-shaped plate 42. A limit rod 43 is fixedly mounted on the outer side wall of the arc-shaped plate 42, and the other end of the limit rod 43 is inserted into the T-shaped cylinder 34.

[0054] Specifically, by manually rotating the turntable of the screw 41, the screw 41 threaded on the T-shaped cylinder 34 can be rotated. Then, with the cooperation of the limiting rod 43 and the T-shaped cylinder 34, the rotating screw 41 can stably drive the arc plate 42 to move inward or outward and clamp the barrel of the mortar body 1, so that the casing 2 can be stably fixed on the mortar body 1.

[0055] Furthermore, the iris closure assembly 5 includes a plurality of fixed posts 51 that are sequentially fixed in a circular array on one side of the inner wall of the housing 2. Closure plates 52 are rotatably mounted on the outer side walls of the plurality of fixed posts 51, and arc-shaped rods 53 are rotatably hinged to the top of the plurality of closure plates 52.

[0056] An annular plate 54 is provided on the inner side of the casing 2. Multiple second arc-shaped grooves 55 are sequentially opened in a circular array on the annular plate 54. T-shaped rods 56 are inserted into the inner side of each of the multiple second arc-shaped grooves 55. The thin end of the T-shaped rod 56 is fixedly connected to the casing 2, and the other end of the arc-shaped rod 53 is rotatably hinged to the annular plate 54.

[0057] Specifically, the annular plate 54 is driven by the drive component 6, so that the annular plate 54 can rotate stably within the housing 2 under the limitation of the second arc groove 55 and the T-shaped rod 56. Then, the rotating annular plate 54 pulls or pushes the arc rod 53, so that the arc rod 53 can drive the closing plate 52 rotatably installed on the fixed column 51 to open or close.

[0058] Furthermore, the drive assembly 6 includes a motor 61 fixedly mounted on the outer wall of the housing 2 via a mounting bracket. A gear 62 is fixedly mounted on the output end of the motor 61. An external gear ring 63 is fixedly mounted on the outer wall of the annular plate 54, and the gear 62 and the external gear ring 63 are meshed together.

[0059] Specifically, when the loading safety indicator light 8 turns green, the control module inside the housing 2 controls the motor 61 to rotate forward. Then, the forward-rotating motor 61 synchronously drives the gear 62 to rotate, so that the rotating gear 62 can drive the annular plate 54 through the external gear ring 63 that meshes with it, thereby enabling the closing plate 52 to open for normal shell loading. Conversely, when the loading safety indicator light 8 turns red, or when the detected chamber pressure is overpressured, the motor 61 does not work, and the closing plate 52 continues to close, thereby blocking shell loading.

[0060] Example 2

[0061] Based on Embodiment 1, in this embodiment: a protective shell 12 is provided on the outside of the motor 61. Both the protective shell 12 and the sleeve 2 are provided with screw holes 13, and the protective shell 12 and the sleeve 2 are locked and fixed by screws through the screw holes 13. A limit groove 14 is provided on the protective shell 12, and a limit block 15 is fixedly installed on the outer side wall of the sleeve 2, and the limit groove 14 and the limit block 15 are inserted into each other.

[0062] The technical solution provided in this embodiment is as follows: When the protective shell 12 is installed on the housing 2 to protect the drive component 6, the limiting groove 14 and the limiting block 15 are first inserted to limit the housing 2, so that the protective shell 12 and the screw hole 13 on the housing 2 can be connected. Then, the screw is screwed into the connected screw hole 13, so that the protective shell 12 can protect the drive component 6 and prevent splashed dirt and other things from entering the housing 2 or the meshing gear 62 and the external gear ring 63 through the through hole between the drive component 6 and the housing 2.

[0063] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A portable border defense mortar shell anti-reloading detection device, characterized in that, include: Mortar body (1); A casing fitted onto the barrel (2); The centering clamping assembly (3) is disposed on the housing (2); A fixing component (4) is symmetrically arranged on the central clamping component (3) for fixing the sleeve (2); Iris closure assembly (5) disposed inside the casing (2); The drive assembly (6) is disposed on the outside of the housing (2), and the drive assembly (6) is connected to the iris closure assembly (5); The power switch (7), filling safety indicator (8), system self-test indicator (9), system reset button (10) and excitation count display (11) are arranged in a circular pattern and fixedly installed on the housing (2).

2. The portable mortar shell anti-reloading detection device for border defense according to claim 1, characterized in that: The central clamping assembly (3) includes two fixed disks (31) symmetrically fixedly installed on the outer side wall of the housing (2). On one side of each of the two fixed disks (31), multiple guide rails (32) are fixedly installed in a circular array. In the middle of the two fixed disks (31), multiple H-shaped frames (33) are arranged in a circular array, and the H-shaped frames (33) are slidably connected to the guide rails (32) by a slider. A T-shaped cylinder (34) is rotatably mounted on the outer wall near the end of the casing (2). A plurality of first arc-shaped grooves (35) are sequentially opened in a circular array on one side of the T-shaped cylinder (34). A T-shaped column (36) is fixedly mounted on one side of the H-shaped frame (33), and the round rod at the end of the T-shaped column (36) passes through the strip groove on the fixed plate (31) and is inserted between it and the first arc-shaped groove (35).

3. The portable border defense mortar shell anti-reloading detection device according to claim 2, characterized in that: The fixing component (4) includes a screw (41) threaded onto the T-shaped cylinder (34), one end of which extends into the interior of the T-shaped cylinder (34) and is rotatably mounted with an arc-shaped plate (42). A limiting rod (43) is fixedly mounted on the outer side wall of the arc-shaped plate (42), and the other end of the limiting rod (43) is inserted into the T-shaped cylinder (34).

4. The portable mortar shell anti-reloading detection device for border defense according to claim 1, characterized in that: The iris closure assembly (5) includes a plurality of fixed posts (51) that are fixedly installed in a circular array on one side of the inner wall of the housing (2). A closing plate (52) is rotatably installed on the outer side wall of each of the plurality of fixed posts (51), and an arc-shaped rod (53) is rotatably hinged to the top of each of the plurality of closing plates (52). The inner side of the casing (2) is provided with an annular plate (54). Multiple second arc-shaped grooves (55) are sequentially opened in a circular array on the annular plate (54). T-shaped rods (56) are inserted into the inner side of each of the multiple second arc-shaped grooves (55). The thin end of the T-shaped rod (56) is fixedly connected to the casing (2). The other end of the arc-shaped rod (53) is rotatably hinged to the annular plate (54).

5. The portable mortar shell anti-reloading detection device for border defense according to claim 4, characterized in that: The drive assembly (6) includes a motor (61) fixedly mounted on the outer wall of the housing (2) by a fixing bracket. A gear (62) is fixedly mounted on the output end of the motor (61). An external gear ring (63) is fixedly mounted on the outer wall of the annular plate (54), and the gear (62) and the external gear ring (63) are meshed together.

6. The portable mortar shell anti-reloading detection device for border defense according to claim 5, characterized in that: The motor (61) is provided with a protective shell (12) on its outer side. Both the protective shell (12) and the sleeve (2) are provided with screw holes (13), and the protective shell (12) and the sleeve (2) are locked and fixed by screws through the screw holes (13).

7. The portable border defense mortar shell anti-reloading detection device according to claim 6, characterized in that: A limiting groove (14) is provided on the protective shell (12), and a limiting block (15) is fixedly installed on the outer side wall of the sleeve (2), and the limiting groove (14) and the limiting block (15) are inserted into each other.