Projectile body cross-medium casting testing device

Abstract

The invention belongs to the technical field of dynamic testing, and provides a projectile body cross-medium casting testing device which comprises a casting sub-device, a testing support, a medium box body and blocking mesh cloth. The casting sub-device comprises a launching part, an upper supporting plate, a lower supporting plate, a supporting bolt, a supporting nut, a supporting gasket, a connecting bolt, a connecting nut and a connecting gasket; the launching component comprises the projectile body, a launching tube, a sealing ring, a thin film, a valve core and a gas storage tube. Through the launching tube, the film, the valve core and the gas storage tube, propelling gas behind a projectile body is discharged in time, the interaction between the projectile body and a medium is reserved, meanwhile, the interaction between the propelling gas and the medium is weakened, the influence of the propelling gas on an experimental test is reduced, in addition, the device can be used for experiments of different projectile bodies and various media, and the experiment efficiency is improved. The device is simple to operate, fast, efficient, high in safety, small in occupied space, free of testing in a target range environment and suitable for a laboratory testing environment.

Description

Technical Field

[0001] The invention relates to the technical field of dynamic testing, and in particular to a projectile-cross-medium projectile testing device. Background Art

[0002] Cross-medium motion is an important issue in modern ballistics research. This process usually involves complex dynamic mechanisms and requires a large number of experimental tests. At present, the test methods for solid penetration and air-entering other media such as projectiles entering water have been fully developed and widely used in scientific research and engineering design.

[0003] However, the test method for the movement of projectiles out of water or other media into the air is still not perfect. This type of test is usually carried out in large venues such as shooting ranges and lakes. It is necessary to place the experimental device in the test medium such as soil, water or ice in advance. There are disadvantages such as cumbersome operation steps and large space occupation. In addition, if the projectile is driven by gunpowder combustion, the high-temperature and high-pressure gunpowder gas will enter the test medium together with the projectile, which will have a great impact on the experimental research. In addition, this test method involves the operation of pyrotechnics, and placing highly sensitive gunpowder in extreme environments for a long time, and there are certain safety issues. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a projectile cross-medium projectile testing device to solve the problems of complex operation, low safety, and large space occupation of traditional methods.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] A projectile cross-medium ejection test device, comprising: an ejection sub-device, a test bracket, a medium box and a blocking mesh; the ejection sub-device comprises: a launching component, an upper support plate, a lower support plate, a supporting bolt, a supporting nut, a supporting gasket, a connecting bolt, a connecting nut and a connecting gasket; the launching component comprises: the projectile, a launching tube, a sealing ring, a film, a valve core and an air storage tube;

[0007] The medium box is arranged on the middle support frame of the test bracket; the ejection sub-device is arranged below the medium box; the blocking mesh is fixed on the top of the test bracket; the upper support holes are arranged on the four corners of the upper support plate; the lower support holes are arranged on the four corners of the lower support plate; the upper support holes and the lower support holes are matched in pairs; the support bolts pass through the matching lower support holes and the upper support holes in turn; each of the support bolts is fixed to the upper support plate and the lower support plate through four groups of support components; the support components include: the support nut and the support gasket; eight annular fixing holes are evenly arranged in the center of the upper support plate; each of the connecting bolts is fixed in turn through the annular fixing hole, the matching hole on the gas storage tube, and the connecting hole on the launch tube using the connecting gasket and the connecting nut; the projectile is arranged inside the launch tube; the launch tube and the film are sealed and connected by the sealing ring; the film is also sealed and connected to the gas storage tank by the sealing ring; the valve core is fixed to the inner center of the gas storage tank;

[0008] The launching component is used to place the projectile; the medium box is used to store the test medium; the blocking mesh is used to intercept the projectile launched by the projectile device; the inner diameter of the launching tube ranges from 20 to 60 mm.

[0009] Preferably, it also includes: a high-speed camera, a spotlight and an inflatable device;

[0010] The high-speed camera is arranged in front of the medium box; the spotlights are arranged on both sides of the high-speed camera and are aimed at the medium box; and the inflation device is connected to the valve core through a rubber tube.

[0011] Preferably, the launch tube comprises: a launch tube body and a connecting ring; an exhaust groove is provided at the upper part of the launch tube body; an exhaust hole is provided at the middle part of the launch tube body; an upper sealing groove is provided at the lower part of the launch tube body; a fixing boss is provided inside the launch tube body; and the connecting hole is provided circumferentially on the connecting ring;

[0012] The sealing ring is placed in the upper sealing groove; the exhaust holes are distributed along the axial direction of the emission main body; the number of rows of the exhaust holes ranges from 1 to 4;

[0013] The number of the exhaust grooves is in the range of 2 to 8; the width of the exhaust grooves is in the range of 5 to 15 mm; the number of the exhaust holes in each row is in the range of 4 to 8; the diameter of the exhaust holes is in the range of 5 to 15 mm; the distance between the center of the exhaust hole in the lowest layer and the fixed boss along the axial direction of the launching tube is greater than or equal to 1.5 times the diameter of the projectile; the inner diameter of the fixed boss is in the range of 0.6 to 0.9 times the diameter of the projectile.

[0014] Preferably, the film is an aluminum foil material with a thickness ranging from 0.05 to 0.25 mm.

[0015] Preferably, the gas storage pipe comprises: a matching ring and a gas storage main body; the matching ring is circumferentially provided with the matching hole; the open end of the gas storage main body is provided with a lower sealing groove; the middle part of the closed end of the gas storage main body is provided with an air filling channel;

[0016] The sealing ring is placed in the lower sealing groove; the valve core is installed in the inflation channel by interference fit; the inner diameters of the launching main body and the gas storage main body are the same; the volume range of the gas storage main body is 1.0 to 3.5 times the volume of the projectile; the internal gas pressure range of the gas storage main body is 0.2 to 0.7MPa; the maximum internal gas pressure of the gas storage main body is lower than 1.0MPa.

[0017] Preferably, the upper support plate comprises: a central hole and the annular fixing hole; the corners of the upper support plate are provided with upper support holes; the corners of the lower support plate are provided with lower support holes;

[0018] The gas storage pipe is fixed to the upper support plate through the matching hole and the upper support hole; the launching tube is fixed to the matching ring through the connecting hole, the matching hole and the upper support hole; the upper support hole and the lower support hole are connected in pairs through the support bolts, the support nuts and the support washers; the gas storage main body passes through the center hole.

[0019] Preferably, the upper sealing groove and the lower sealing groove are provided with R1 fillets.

[0020] Preferably, the inner diameter of the sealing ring is the same as that of the launching tube body; the outer diameter of the sealing ring is 1.5 to 6.5 mm smaller than the diameter of the upper sealing groove and the lower sealing groove; the thickness of the sealing ring is 0.1 to 0.7 mm greater than the depth of the upper sealing groove and the lower sealing groove.

[0021] The present invention discloses the following technical effects:

[0022] The present invention provides a projectile-cross-medium ejection test device, which solves the problems of complex operation, low safety and large site occupation of traditional methods through an ejection sub-device, a medium box and a blocking mesh, and achieves the goal of retaining the interaction between the projectile and the medium while weakening the interaction between the propelling gas and the medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. 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 creative labor.

[0024] Figure 1 An overall schematic diagram of a projectile-cross-medium projectile testing device provided by an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a projectile device provided in an embodiment of the present invention;

[0026] Figure 3 An exploded diagram of the structure of a launch component provided by an embodiment of the present invention;

[0027] Figure 4 A cross-sectional view of a launch tube structure provided by an embodiment of the present invention;

[0028] Figure 5 A cross-sectional view of a gas storage pipe structure provided by an embodiment of the present invention;

[0029] Figure 6 A schematic diagram of the structure of the upper support plate and the lower support plate provided in an embodiment of the present invention;

[0030] Description of reference numerals:

[0031] 1-projectile device, 11-launching component, 111-projectile body, 112-launching tube, 1121-launching main body, 11211-exhaust groove, 11212-exhaust hole, 11213-fixing boss, 11214-upper sealing groove, 1122-connecting ring, 11221-connecting hole, 113-sealing ring, 114-film, 115-valve core, 116-gas storage tube, 1161-matching ring, 11611-matching hole , 1162-gas storage main body, 11621-lower sealing groove, 11622-inflating channel, 12-upper support plate, 121-center hole, 122-annular fixing hole, 123-upper support hole, 13-lower support plate, 131-lower support hole, 14-support bolt, 15-support nut, 16-support gasket, 17-connecting bolt, 18-connecting nut, 19-connecting gasket, 2-test bracket, 3-medium box, 4-blocking mesh. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] The purpose of the present invention is to provide a projectile cross-medium projectile testing device to solve the problems of complex operation, low safety and large space occupation in traditional methods.

[0034] 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.

[0035] Figure 1 The overall schematic diagram of the projectile cross-medium projectile testing device provided by the embodiment of the present invention is as follows: Figure 2 A schematic diagram of the structure of the projectile device 1 provided in an embodiment of the present invention, Figure 3 The exploded diagram of the launching component structure provided by the embodiment of the present invention is as follows: Figure 1 , Figure 2 as well as Figure 3 As shown, the present invention provides a projectile cross-medium projectile test device, comprising: a projectile sub-device 1, a test bracket 2, a medium box 3 and a blocking mesh 4; the projectile sub-device 1 comprises: a launching component 11, an upper support plate 12, a lower support plate 13, a supporting bolt 14, a supporting nut 15, a supporting gasket 16, a connecting bolt 17, a connecting nut 18 and a connecting gasket 19; the launching component 11 comprises: a projectile 111, a launching tube 112, a sealing ring 113, a film 114, a valve core 115 and a gas storage tube 116;

[0036] The medium box 3 is arranged on the middle support frame of the test bracket 2; the ejection sub-device 1 is arranged below the medium box 3; the blocking mesh 4 is fixed on the top of the test bracket 2; the upper support plate 12 is provided with upper support holes 123 on the four corners; the lower support plate 13 is provided with lower support holes 131 on the four corners; the upper support holes 123 and the lower support holes 131 are matched in pairs; the support bolts 14 pass through the matched lower support holes 131 and the upper support holes 123 in sequence; each support bolt 14 is fixed to the upper support plate 12 and the lower support plate 13 through four groups of support components; the support components include : Support nut 15 and support gasket 16; eight annular fixing holes 122 are evenly arranged in the center of the upper support plate 12; each connecting bolt 17 is fixed in sequence through the annular fixing hole 122, the matching hole 11611 on the gas storage tube 116, and the connecting hole 11221 on the launch tube 112 using the connecting gasket 19 and the connecting nut 18; the projectile 111 is arranged inside the launch tube 112; the launch tube 112 and the film 114 are sealed and connected by the sealing ring 113; the film 114 is also sealed and connected to the gas tank by the sealing ring 113; the valve core 115 is fixed at the inner center of the gas tank;

[0037] The launching component 11 is used to place the projectile 111; the medium box 3 is used to store the test medium; the blocking mesh 4 is used to intercept the projectile 111 launched by the projectile device 1; the inner diameter of the launching tube 112 ranges from 20 to 60 mm.

[0038] Optionally, it also includes: a high-speed camera, a spotlight, and an inflatable device;

[0039] The high-speed camera is arranged in front of the medium box 3; the spotlights are arranged on both sides of the high-speed camera and are aimed at the medium box 3; the inflation device is connected to the valve core 115 through a rubber tube.

[0040] refer to Figure 4 The launch tube 112 includes: a launch tube body 1121 and a connecting ring 1122; an exhaust groove 11211 is provided on the upper part of the launch tube body 1121; an exhaust hole 11212 is provided in the middle part of the launch tube body 1121; an upper sealing groove 11214 is provided on the lower part of the launch tube body 1121; a fixing boss 11213 is provided inside the launch tube body 1121; and a connecting hole 11221 is provided circumferentially on the connecting ring 1122;

[0041] A sealing ring 113 is placed in the upper sealing groove 11214; exhaust holes 11212 are distributed axially along the launch tube body 1121; the number of rows of exhaust holes 11212 ranges from 1 to 4 rows

[0042] The number of exhaust grooves 11211 is in the range of 2 to 8; the width of the exhaust grooves 11211 is in the range of 5 to 15 mm; the number of exhaust holes 11212 in each row is in the range of 4 to 8; the diameter of the exhaust holes 11212 is in the range of 5 to 15 mm; the distance between the center of the lowest exhaust hole 11212 and the fixed boss 11213 along the axial direction of the launching tube 1121 is greater than or equal to 1.5 times the diameter of the projectile 111; the inner diameter of the fixed boss 11213 is in the range of 0.6 to 0.9 times the diameter of the projectile 111.

[0043] Preferably, the film 114 is an aluminum foil material with a thickness ranging from 0.05 to 0.25 mm.

[0044] refer to Figure 5 The gas storage pipe 116 includes: a matching ring 1161 and a gas storage main body 1162; a matching hole 11611 is circumferentially arranged on the matching ring 1161; a lower sealing groove 11621 is arranged at the open end of the gas storage main body 1162; and a charging channel 11622 is arranged in the middle of the closed end of the gas storage main body 1162;

[0045] A sealing ring 113 is placed in the lower sealing groove 11621; the valve core 115 is installed in the inflation channel 11622 by interference fit; the inner diameters of the launching main body 1121 and the gas storage main body 1162 are the same; the volume range of the gas storage main body 1162 is 1.0 to 3.5 times the volume of the projectile 111; the internal gas pressure range of the gas storage main body 1162 is 0.2 to 0.7 MPa; the maximum internal gas pressure of the gas storage main body 1162 is lower than 1.0 MPa.

[0046] refer to Figure 6 The upper support plate 12 includes: a central hole 121 and an annular fixing hole 122; upper support holes 123 are provided at the corners of the upper support plate 12; lower support holes 131 are provided at the corners of the lower support plate 13;

[0047] The gas storage pipe 116 is fixed to the upper support plate 12 through the matching hole 11611 and the upper support hole 123; the launching tube 112 is fixed to the matching ring 1161 through the connecting hole 11221, the matching hole 11611 and the upper support hole 123; the upper support hole 123 and the lower support hole 131 are connected in pairs through the support bolts 14, the support nuts 15 and the support washers 16; the gas storage pipe body 1162 passes through the center hole 121.

[0048] Optionally, the upper sealing groove 11214 and the lower sealing groove 11621 are provided with R1 fillets.

[0049] Specifically, the inner diameter of the sealing ring 113 is the same as that of the launch tube body 1121; the outer diameter of the sealing ring 113 is 1.5 to 6.5 mm smaller than the diameter of the upper sealing groove 11214 and the lower sealing groove 11621; the thickness of the sealing ring 113 is 0.1 to 0.7 mm greater than the depth of the upper sealing groove 11214 and the lower sealing groove 11621.

[0050] Preferably, the film 114 is tightly clamped between the two sealing rings 113 , and the two sealing rings 113 are respectively placed in the upper sealing groove 11214 of the launch tube 112 and the lower sealing groove 11621 of the gas storage tube 116 .

[0051] Furthermore, the projectile body 111 is placed inside the launch tube 112 with clearance fit from above and is supported by the fixing boss 11213 of the launch tube body 1121.

[0052] Specifically, the launching component 11 is assembled and sealed by connecting bolts 17, connecting nuts 18 and connecting gaskets 19, and is inserted into the central hole 121 of the upper support plate 12 and aligned with the annular fixing hole 122 for tightening and restraining. The upper support hole 123 of the upper support plate 12 is aligned with the lower support hole 131 of the lower support plate 13, and is fixed by supporting bolts 14, supporting nuts 15 and supporting gaskets 16.

[0053] Furthermore, the projectile sub-device 1 is located directly below the test bracket 2 , the bottom opening of the medium box 3 is aligned with the launching tube 112 of the launching component 11 in the projectile sub-device 1 , and the blocking mesh 4 is located directly above the test bracket 2 .

[0054] Specifically, the mesh diameter of the blocking mesh cloth 4 should be less than 0.5 times the diameter of the projectile 111 .

[0055] Optionally, the medium box 3 may be filled with a variety of different test media.

[0056] Specifically, the working process of the cross-medium ejection test device of the projectile 111 is as follows: the test device uses the rupture principle of the film 114 to propel the projectile 111 for ejection, and reduces the influence of the propulsion gas on the experimental test by setting the exhaust hole 11212. The exhaust groove 11211 is used to prevent the gas in front of the projectile 111 from being filled into the test medium in advance, and the safety is improved by combining with the blocking mesh 4, so as to finally realize the laboratory safe and efficient test of the cross-medium ejection of the projectile 111; when using the test device, first determine the material and thickness of the film 114, assemble it between the launch tube 112 and the gas storage tube 116 through the sealing ring 113, and put the projectile 111 into it to form the launching component 11, fix it on the upper support plate 12 and combine it with other parts to form the ejection sub-device 1, and place it under the test bracket 2, put the test medium into the medium box 3, and seal the opening below it with paper or aluminum foil, and fix the blocking mesh 4 on the top of the test bracket 2; use a gas cylinder or air pump to inflate it The device inflates the valve core 115, and the gas pressure in the gas storage tube 116 reaches the predetermined pressure of the film 114 and breaks, and the propelling gas is instantly released into the launch tube 112 to push the projectile 111 to accelerate; after the projectile 111 passes through the exhaust hole 11212 above, the upper gas is compressed and discharged through the exhaust groove 11211, so as to prevent the upper gas from being filled into the test medium in advance; after the projectile 111 passes through the exhaust hole 11212 below, the propelling gas quickly discharges from the exhaust hole 11212, so as to reduce the influence of the propelling gas on the experimental test; the projectile 111 is ejected from the launch tube 112 into the test medium in the medium box 3, moves in the test medium and is ejected together with part of the medium, and the interaction process and the posture of the projectile 111 are recorded by the matching high-speed camera and spotlight, and finally the ejected projectile 111 hits the blocking mesh 4, and the buffering effect prevents it from continuing to move upward, thereby improving the safety of the test and enabling the test device to be used in the laboratory.

[0057] The beneficial effects of the present invention are as follows:

[0058] The present invention realizes the timely discharge of the propellant gas behind the projectile through the launch tube, film, valve core and gas storage tube, retains the interaction between the projectile and the medium, and weakens the interaction between the propellant gas and the medium, thereby reducing its influence on experimental tests. In addition, the device can be used for experiments with different projectiles and a variety of media, is simple to operate, fast and efficient, highly safe, occupies a small area, does not need to be tested in a shooting range environment, and is suitable for laboratory testing environments.

[0059] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0060] The principles and implementation methods of the present invention are described in this article using specific examples. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A projectile cross-medium projectile testing device, characterized in that: include: Projectile device, test bracket, medium box and barrier mesh; The projectile sub-device includes: a launching component, an upper supporting plate, a lower supporting plate, a supporting bolt, a supporting nut, a supporting gasket, a connecting bolt, a connecting nut and a connecting gasket; the launching component includes: the projectile body, a launching tube, a sealing ring, a film, a valve core and a gas storage tube; The medium box is arranged on the middle support frame of the test bracket; the ejection sub-device is arranged below the medium box; the blocking mesh is fixed on the top of the test bracket; the upper support holes are arranged on the four corners of the upper support plate; the lower support holes are arranged on the four corners of the lower support plate; the upper support holes and the lower support holes are matched in pairs; the support bolts pass through the matching lower support holes and the upper support holes in turn; each of the support bolts is fixed to the upper support plate and the lower support plate through four groups of support components; the support components include: the support nut and the support gasket; eight annular fixing holes are evenly arranged in the center of the upper support plate; each of the connecting bolts is fixed in turn through the annular fixing hole, the matching hole on the gas storage tube, and the connecting hole on the launch tube using the connecting gasket and the connecting nut; the projectile is arranged inside the launch tube; the launch tube and the film are sealed and connected by the sealing ring; the film is also sealed and connected to the gas storage tank by the sealing ring; the valve core is fixed to the inner center of the gas storage tank; The launching component is used to place the projectile; the medium box is used to store the test medium; the blocking mesh is used to intercept the projectile launched by the projectile device; the inner diameter of the launching tube ranges from 20 to 60 mm.

2. A projectile-cross-medium projectile testing device according to claim 1, characterized in that: Also includes: high-speed cameras, spotlights, and inflatables; The high-speed camera is arranged in front of the medium box; The spotlights are aimed at the medium box and are arranged on both sides of the high-speed camera; the inflation device is connected to the valve core through a rubber tube.

3. A projectile-cross-medium projectile testing device according to claim 1, characterized in that: The launch tube comprises: a launch tube body and a connecting ring; an exhaust groove is arranged on the upper part of the launch tube body; an exhaust hole is arranged in the middle part of the launch tube body; an upper sealing groove is arranged on the lower part of the launch tube body; a fixing boss is arranged inside the launch tube body; and the connecting hole is arranged circumferentially on the connecting ring; The sealing ring is placed in the upper sealing groove; the exhaust holes are distributed along the axial direction of the emission main body; the number of rows of the exhaust holes ranges from 1 to 4; The number of the exhaust grooves is in the range of 2 to 8; the width of the exhaust grooves is in the range of 5 to 15 mm; the number of the exhaust holes in each row is in the range of 4 to 8; the diameter of the exhaust holes is in the range of 5 to 15 mm; the distance between the center of the exhaust hole in the lowest layer and the fixed boss along the axial direction of the launching tube is greater than or equal to 1.5 times the diameter of the projectile; the inner diameter of the fixed boss is in the range of 0.6 to 0.9 times the diameter of the projectile.

4. A projectile-cross-medium projectile testing device according to claim 1, characterized in that: The film is an aluminum foil material with a thickness ranging from 0.05 to 0.25 mm.

5. The projectile-cross-medium projectile testing device according to claim 3, characterized in that: The gas storage pipe comprises: a matching ring and a gas storage main body; the matching ring is provided with the matching hole circumferentially; the open end of the gas storage main body is provided with a lower sealing groove; the middle part of the closed end of the gas storage main body is provided with an air filling channel; The sealing ring is placed in the lower sealing groove; the valve core is installed in the inflation channel by interference fit; the inner diameters of the launching main body and the gas storage main body are the same; the volume range of the gas storage main body is 1.0 to 3.5 times the volume of the projectile; the internal gas pressure range of the gas storage main body is 0.2 to 0.7MPa; the maximum internal gas pressure of the gas storage main body is lower than 1.0MPa.

6. A projectile-cross-medium projectile testing device according to claim 5, characterized in that: The upper support plate comprises: a central hole and the annular fixing hole; the upper support hole is arranged at the corner of the upper support plate; the lower support hole is arranged at the corner of the lower support plate; The gas storage pipe is fixed to the upper support plate through the matching hole and the upper support hole; the launching tube is fixed to the matching ring through the connecting hole, the matching hole and the upper support hole; the upper support hole and the lower support hole are connected in pairs through the support bolts, the support nuts and the support washers; the gas storage main body passes through the center hole.

7. A projectile-cross-medium projectile testing device according to claim 5, characterized in that: The upper sealing groove and the lower sealing groove are provided with R1 fillets.

8. The projectile-cross-medium projectile testing device according to claim 5, characterized in that: The inner diameter of the sealing ring is the same as that of the launch tube body; the outer diameter of the sealing ring is 1.5 to 6.5 mm smaller than the diameter of the upper sealing groove and the lower sealing groove; the thickness of the sealing ring is 0.1 to 0.7 mm greater than the depth of the upper sealing groove and the lower sealing groove.

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