Device and method for quickly determining the angle between the axis of a crater and a target surface

Abstract

The application provides a device for quickly measuring the angle between the axis of a bullet hole and a target surface, which comprises a triangular support, one side of the triangular support is provided with a measuring plate, and the measuring plate is arranged in parallel with the target surface; a matching installation assembly is installed on the top surface of the triangular support, the matching installation assembly comprises a circular ring installation disc, five installation holes are formed in the circular ring installation disc, a laser pen is installed in each installation hole, a fixing rod is fixedly arranged at the bottom end of the circular ring installation disc, an installation seat is fixedly arranged at the bottom end of the fixing rod, and the installation seat is detachably installed on the triangular support. The application can quickly measure the angle between the axis of a bullet hole and a target surface, is simple to operate, and is beneficial to promotion.

Description

Technical Field

[0001] This invention relates to the technical field of protective engineering, specifically to a device and method for rapidly determining the angle between the crater axis and the target surface. Background Technology

[0002] Penetration testing is the most important method for studying the penetration resistance of materials, structures, and equipment. Due to factors such as the projectile's impact attitude and the heterogeneity of the target material, the penetration path may deflect after the projectile hits the target. Accurately measuring the angle between the crater axis and the target surface is essential for reducing test errors, accurately obtaining the effective penetration depth, and accurately assessing the penetration resistance.

[0003] Therefore, a device is needed to quickly determine the angle between the crater axis and the target surface. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a device and method for rapidly determining the angle between the crater axis and the target surface, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for rapidly determining the angle between the axis of a crater and the target surface includes a triangular support, a measuring plate being provided on one side of the triangular support, and the measuring plate being parallel to the target surface;

[0007] The top surface of the triangular bracket is equipped with a mating mounting assembly, which includes a circular mounting plate with five mounting holes. Each mounting hole contains a laser pointer. The bottom end of the circular mounting plate is fixed with a fixing rod, and the bottom end of the fixing rod is fixed with a mounting base. The mounting base is detachably mounted on the triangular bracket.

[0008] Furthermore, the triangular bracket includes a support platform, a U-shaped plate is provided above the support platform, an installation block is provided inside the U-shaped plate, and the two sides of the inner wall of the U-shaped plate are respectively engaged and rotated along the two sides of the installation block. Several three-section leg tubes are telescopically installed on the bottom surface of the support platform.

[0009] Furthermore, an adjustment handle is installed on one side of the U-shaped plate, and an installation groove is provided on the top surface of the U-shaped plate. The mounting base is located in the installation groove and is connected to the installation groove by several connecting bolts.

[0010] Furthermore, each of the laser pointers is connected to the circular mounting plate by a fastening bolt.

[0011] Furthermore, the measuring plate includes a rectangular frame, within which a core thin plate is detachably installed, and mounting legs are detachably installed at each of the four corners on one side of the rectangular frame.

[0012] Furthermore, a number of reinforcing bolts are evenly arranged between the core thin plate and the rectangular frame and are connected by the reinforcing bolts. Each mounting leg is provided with a mating bolt and is connected to the rectangular frame by the mating bolt.

[0013] This invention also provides a method for rapidly determining the angle between the crater axis and the target surface, characterized by the following operational steps:

[0014] Step 1: Open the tripod and place it on the ground;

[0015] Step 2: Install the mating assembly onto the triangular bracket using several connecting bolts to complete the installation of the mating assembly;

[0016] Step 3: Insert the laser pointer into the corresponding mounting holes in sequence and connect and fix it with the fastening bolts to complete the installation of the laser pointer;

[0017] Step 4: Complete the subsequent measurement work.

[0018] This invention provides a device and method for rapidly determining the angle between the crater axis and the target surface.

[0019] Compared with existing technologies, it has the following beneficial effects:

[0020] 1. The device designed by this invention for rapidly determining the angle between the crater axis and the target surface can accurately measure the angle between the crater axis and the target surface, which is essential for reducing test errors, accurately obtaining the effective penetration depth, and accurately evaluating the anti-penetration protection capability.

[0021] 2. The device designed by this invention for rapidly determining the angle between the crater axis and the target surface helps to study the interaction mechanism between the projectile and the target during penetration, and provides support for the development of new anti-penetration materials and structures. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional connection diagram of the triangular bracket and the mating mounting components of the present invention is shown;

[0024] Figure 2 A three-dimensional connection diagram of the triangular bracket and the mating mounting components of the present invention is shown;

[0025] Figure 3 A three-dimensional connection diagram of the measuring plate of the present invention is shown;

[0026] Figure 4 A three-dimensional connection diagram of the measuring plate of the present invention is shown;

[0027] Figure 5 This diagram shows a three-dimensional view of the mounting components of the present invention from the right side.

[0028] Figure 6 This diagram shows a left-side three-dimensional view of the mounting components of the present invention;

[0029] Figure 7 A schematic diagram showing the orientation of the laser pointer mounting holes of the present invention is shown;

[0030] The following components are shown in the diagram: 1. Triangular bracket; 11. U-shaped plate; 12. Mounting block; 13. Support platform; 14. Leg tube; 2. Matching mounting components; 21. Laser pointer; 22. Fastening bolt; 23. Circular mounting plate; 24. Fixing rod; 25. Mounting base; 3. Measuring plate; 31. Mounting leg; 32. Rectangular frame; 33. Core thin plate. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example

[0033] To address the technical problems in the background section, a device for rapidly determining the angle between the crater axis and the target surface is provided as follows:

[0034] Combination Figure 1-7 As shown, the present invention provides a device for rapidly determining the angle between the crater axis and the target surface, including a triangular support 1, a measuring plate 3 is provided on one side of the triangular support 1, and the measuring plate 3 is arranged parallel to the target surface;

[0035] The top surface of the triangular bracket 1 is equipped with a mating mounting component 2. The mating mounting component 2 includes a circular mounting plate 23 with five mounting holes. The axes of the mounting holes are perpendicular to the end face of the circular mounting plate 23. Mounting holes 1# to 4# are arranged in a square. Assuming the side length of the square is 'a', and the center of mounting hole 5# is concentric with mounting holes 1# to 4#, then the radius of the circle is... Furthermore, mounting hole #5 is located on the vertical line between mounting holes #1 and #2; (Participate) Figure 7 Each of the mounting holes is equipped with a laser pointer 21, and each laser pointer 21 is connected to the annular mounting plate 23 by a fastening bolt 22. A fixing rod 24 is fixed to the bottom end of the annular mounting plate 23, and a mounting base 25 is fixed to the bottom end of the fixing rod 24. The mounting base 25 is detachably mounted on the triangular bracket 1.

[0036] The triangular bracket 1 includes a support platform 13, with a U-shaped plate 11 positioned above the support platform 13. A mounting block 12 is disposed within the U-shaped plate 11, and the inner walls of the U-shaped plate 11 are respectively engaged and rotated along the sides of the mounting block 12. Several three-section leg tubes 14 are retractably mounted on the bottom surface of the support platform 13. An adjustment handle is mounted on one side of the U-shaped plate 11, and a mounting groove is formed on the top surface of the U-shaped plate 11. The mounting base 25 is located within the mounting groove and connected to the mounting groove via several connecting bolts.

[0037] The measuring plate 3 includes a rectangular frame 32, within which a core thin plate 33 is detachably mounted. Graph paper and a coordinate system are drawn on the core thin plate 33. Mounting legs 31 are detachably mounted at each of the four corners on one side of the rectangular frame 32. A plurality of reinforcing bolts are evenly distributed between the core thin plate 33 and the rectangular frame 32, and these bolts connect the two parts. Each mounting leg 31 is connected to the rectangular frame 32 by a mating bolt.

[0038] This invention also provides a method for rapidly determining the angle between the crater axis and the target surface, characterized by the following operational steps:

[0039] Step 1: Open the tripod 1 and place it on the ground;

[0040] Step 2: Install the mating assembly 2 onto the triangular bracket 1 using several connecting bolts to complete the installation of the mating assembly 2;

[0041] Step 3: Insert the laser pointer 21 into the corresponding mounting holes in sequence and connect and fix it with the fastening bolts 22 to complete the installation of the laser pointer 21;

[0042] Step 4: Complete the subsequent measurement work.

[0043] Step four: Further optimization

[0044] S1. Turn on any laser pointer 21;

[0045] S2. Adjust the angle of the tripod 1 to make the incident laser parallel to the crater axis;

[0046] S3. Adjust the height of the measuring plate support legs so that when placed on the target surface, the surface of the measuring plate 3 is parallel to the target surface;

[0047] S4. Simultaneously turn on laser pointers 1#, 2#, 3#, 4#, and 5#.

[0048] S5. Place the measuring plate 3 on the target surface. At this time, the light spots of laser pointers #1, #2, #3, #4, and #5 on the surface of the measuring plate are distributed on the same ellipse, and the minor axis length of the ellipse is... The coordinates of the five light spots were read using a measuring plate.

[0049] S6. Based on the coordinates of the light spots, use MATLAB software to solve for the equations of the ellipses containing the five light spots, and then use these equations to calculate the length of the major axis Lab of the ellipse. The length of the major axis Lab of the ellipse satisfies a geometric relationship with the angle α between the gun barrel and the target surface. but The angle between the crater axis and the target surface is determined in sequence.

[0050] In summary, the device designed by this invention for rapidly determining the angle between the crater axis and the target surface can accurately measure the angle between the crater axis and the target surface. This is essential for reducing experimental errors, accurately obtaining the effective penetration depth, and accurately assessing anti-penetration protection capabilities. In addition, measuring the angle between the crater axis and the target surface helps to support the study of the interaction mechanism between the projectile and the target during penetration and the development of new anti-penetration materials and structures.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for rapid determination of the angle between the axis of a crater and the target surface, comprising a triangular support (1), characterised in that: One side of the triangular support (1) is provided with a measuring plate (3), which is parallel to the target surface; The top surface of the triangular support (1) is provided with a matching installation assembly (2), which comprises a circular ring installation disc (23), five installation holes are formed in the circular ring installation disc (23), the 1#-4# installation holes are distributed in a square shape, the center of the 5# installation hole is concentric with the 1#-4# installation holes, and the 5# installation hole is located on the perpendicular bisector of the 1# and 2# installation holes, a laser pen (21) is installed in each installation hole, and the bottom end of the fixed rod (24) is fixedly provided with a mounting seat (25), and the mounting seat (25) is detachably mounted on the triangular support (1).

2. The device for quickly determining the angle between the axis of a crater and the target surface according to claim 1, characterized in that: The triangular support (1) comprises a support table (13), a U-shaped plate (11) is arranged above the support table (13), an installation block (12) is arranged in the U-shaped plate (11), and the inner walls of the U-shaped plate (11) are clamped and rotated on both sides of the installation block (12), and a plurality of three-section foot pipes (14) are telescopically installed on the bottom surface of the support table (13).

3. The device for quickly determining the angle between the axis of a crater and the target surface according to claim 2, characterized in that: One side of the U-shaped plate (11) is provided with an adjusting handle, and a mounting groove is formed in the top surface of the U-shaped plate (11), and the mounting seat (25) is located in the mounting groove and connected with the mounting groove through a plurality of connecting bolts.

4. The device for quickly determining the angle between the axis of a crater and the target surface according to claim 1, characterized in that: A fastening bolt (22) is arranged between each laser pen (21) and the circular ring installation disc (23) and connected through the fastening bolt (22).

5. The device for quickly determining the angle between the axis of a crater and the target surface according to claim 1, characterized in that: The measuring plate (3) comprises a rectangular frame (32), a heart thin plate (33) is detachably installed in the rectangular frame (32), and a mounting leg (31) is detachably installed at each of the four corners of one side of the rectangular frame (32).

6. The device for quickly determining the angle between the axis of a crater and the target surface according to claim 5, characterized in that: A plurality of reinforcing bolts are uniformly arranged between the heart thin plate (33) and the rectangular frame (32) and connected through the reinforcing bolts, and a matching bolt is arranged between each mounting leg (31) and the rectangular frame (32) and connected through the matching bolt.

7. The use of the device for quickly determining the angle between the axis of a crater and the target surface according to any one of claims 1 to 6, characterized in that: The method comprises the following operation steps: Step one: open the triangular support (1) and support it on the ground; Step two: install the matching installation assembly (2) on the triangular support (1) through a plurality of connecting bolts to complete the installation of the matching installation assembly (2); Step three: sequentially insert the laser pen (21) into the corresponding installation hole and connect and fix it through the fastening bolt (22) to complete the installation of the laser pen (21); Step four: complete the subsequent measurement operation, specifically including: the measurement plate 3 is placed on the target surface, at this time the 1#, 2#, 3#, 4#, 5# laser pen light spot distribution on the surface of the measurement plate is on the same ellipse, and the short axis length of the ellipse is , the coordinates of the 5 light spots are read out through the measurement plate; according to the light spot coordinates, the equation of the ellipse where the 5 light spots are located is solved by using MATLAB software, the long axis length Lab of the ellipse is solved according to the ellipse equation, and the long axis length Lab of the ellipse and the angle α between the gun barrel and the target surface satisfy the geometric relationship Lab×sin α= , then α=arcsin( / Lab), and the angle between the bullet crater axis and the target surface is quickly determined in turn.

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