CN111380402B - Automatic breechblock of high-pressure air cannon - Google Patents
Automatic breechblock of high-pressure air cannon Download PDFInfo
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- CN111380402B CN111380402B CN202010113225.3A CN202010113225A CN111380402B CN 111380402 B CN111380402 B CN 111380402B CN 202010113225 A CN202010113225 A CN 202010113225A CN 111380402 B CN111380402 B CN 111380402B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
- F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
- F41B11/70—Details not provided for in F41B11/50 or F41B11/60
- F41B11/72—Valves; Arrangement of valves
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Abstract
The invention discloses an automatic breechblock of a high-pressure air cannon, and relates to a breechblock of a high-pressure air cannon. The invention aims to solve the problems that the existing high-pressure air cannon mostly adopts a disposable blasting steel sheet as a breechblock, the blasting steel sheet is replaced once when the cannonball is shot once, the high-pressure air cannon cannot be reused and is difficult to realize automation, and a spring of a common one-way valve is difficult to design under the pressure of hundreds of megapascals. The automatic breechblock of the high-pressure air cannon consists of a valve body, a switch piston, a valve plate, a valve seat, a guide rail, a spring, a mandrel, a support rod, a control cavity and a support rib; the invention relates to a high-pressure air cannon breechblock capable of being automatically opened and closed, which can be automatically closed when compressed air or energy storage media such as carbon dioxide are filled, can be automatically opened when a cannonball is shot, and can automatically reset after being shot, so that the problem that the traditional breechblock needs manual operation is solved, and the breechblock has the characteristics of simple structure, convenience in operation, quick response and reusability. The invention is applied to the field of high-pressure air cannons.
Description
Technical Field
The invention relates to a breechblock of a high-pressure air cannon.
Background
The breechblock is a projectile filling device, and conventional artillery mostly adopts a threaded breechblock or a wedge-shaped breechblock, and the breechblock needs to be manually reset to operate after the projectiles are fired, so that the operation is troublesome. At present, a high-pressure air cannon mostly adopts a one-time blasting steel sheet as a breech bolt, and the blasting steel sheet is replaced once when the cannonball is shot once, so that the high-pressure air cannon cannot be used repeatedly, and is difficult to realize automation.
Disclosure of Invention
The invention provides an automatic breechblock of a high-pressure air cannon, aiming at solving the technical problems that the prior high-pressure air cannon mostly adopts a disposable bursting steel sheet as a breechblock, the bursting steel sheet is replaced once when a cannonball is shot, the prior high-pressure air cannon cannot be reused, the automation is difficult to realize, and the design of a spring of a common one-way valve under the pressure of hundreds of megapascals is difficult.
The automatic breechblock of the high-pressure air cannon consists of a valve body 1, a switch piston 2, a valve plate 3, a valve seat 4, a guide rail 5, a spring 6, a mandrel 7, a support rod 8, a control cavity 9 and a support rib 11;
the valve body 1 and the control cavity 9 are both hollow cylindrical structures, two ends of the valve body 1 are both open, one end of the valve body is an air inlet end, and the other end of the valve body is an air outlet end; both ends of the control cavity 9 are provided with cover bodies; the control cavity 9 is arranged at the center of the inner cavity of the valve body 1, the outer wall of the control cavity 9 close to the air inlet end of the valve body 1 is respectively fixed with one ends of the four supporting ribs 11, and the other ends of the four supporting ribs 11 are respectively fixed on the inner wall of the valve body 1; an exhaust channel 10 is arranged in the cover body of the control cavity 9 close to the air inlet end of the valve body 1, one end of the exhaust channel 10 is communicated with the inner cavity of the control cavity 9, and the other end of the exhaust channel 10 penetrates through the inside of one support rib 11 and the side wall of the valve body 1 to be communicated with the atmosphere; a plurality of air inlet channels 9-1 are symmetrically arranged on the cover body of the control cavity 9 close to the air outlet end of the valve body 1, and the air inlet channels 9-1 are all through holes;
a valve seat 4 is fixed on the inner wall of the valve body 1 close to the air outlet end, the valve seat 4 is of a circular ring structure, two grooves 4-1 are symmetrically arranged on the upper surface of the valve seat 4 opposite to the air outlet end of the valve body 1, a guide rail 5 is of a cuboid structure, and two ends of the guide rail 5 are respectively fixed in the two grooves 4-1; the surface of the guide rail 5 is flush with the surface of the valve seat 4 on the side relatively far away from the air outlet end of the valve body 1;
the switch piston 2 is of a cylindrical structure, the switch piston 2 is arranged in the control cavity 9, the side face of the switch piston 2 is tightly attached to the inner wall of the control cavity 9, a spring 6 is fixed between the switch piston 2 and the inner wall of the control cavity 9, which is close to the air inlet end of the valve body 1, the spring 6 is in a compressed state, the surface of the switch piston 2, which is opposite to the spring 6, is fixed with one end of a support rod 8, the other end of the support rod 8 is fixed with a mandrel 7, the support rod 8 is vertical to the mandrel 7, and two valve plates 3 (a structure similar to a hinge) are hinged on the mandrel 7; the two valve plates 3 are both positioned on one side of the valve seat 4 and the guide rail 5 which are relatively far away from the air outlet end of the valve body 1, and the outer edges of the two valve plates 3 are both in sliding connection with the valve seat 4 and the guide rail 5; when the two valve plates 3 are unfolded to the maximum angle in the valve body 1, the outer edges of the two valve plates 3 are completely and tightly attached to the inner wall of the valve body 1, and the included angle alpha of the two valve plates 3 is 170-175 degrees in the state; the guide rail 5 and the spindle 7 are perpendicular.
The working principle of the automatic breechblock of the high-pressure air cannon is as follows: the air inlet end of the valve body 1 is communicated with the air storage chamber, the shell is arranged at the air outlet end, and the air inlet end of the valve body 1 is of a hollow structure, so that the pressure of the air storage chamber and the pressure of the part, outside the control cavity 9, in the inner cavity of the valve body 1 are always kept consistent; the inner cavity of the control cavity 9 is communicated with the atmosphere through an exhaust passage 10; when the pressure P of the gas storage chamber before the cannonball is launched does not reach the preset pressure for the cannonball launching, the switch piston 2 is tightly attached to one side of the control cavity 9 close to the gas outlet end of the valve body 1 under the atmospheric pressure and the pressure of the spring 6, the valve plate 3 is tightly pressed on the valve seat 4, and the breechblock is in a closed state;
when the cannonball is to be shot, the compressed air causes the pressure P in the air storage chamber to rise, the pressure P is simultaneously acted on one side of the switch piston 2 close to the support rod 8, the acting force on the side is gradually increased and acted on the switch piston 2 through the air inlet channel 9-1, when the pressure P exceeds the pretightening force and the atmospheric pressure of the spring 6, the switch piston 2 moves towards the direction of the spring 6, the gas in the inner cavity of the control cavity 9 is discharged through the exhaust passage 10, the switch piston 2 drives the mandrel 7 to move towards the direction of the spring 6 through the support rod 8, the two valve plates 3 hinged on the mandrel 7 are gradually closed under the action of the pressure P, the free ends of the two valve plates 3 always slide on the guide rail 5 in the closing process, the valve port is opened, and the high-pressure gas P is ejected from the gas storage chamber, passes through the valve seat 4 and the guide rail 5 and acts on the bottom of the cannonball to push the cannonball to launch.
After the cannonball is ejected, the pressure in the air storage chamber is reduced, the pressure applied to the switch piston 2 through the air inlet channel 9-1 is also reduced, the acting force is reduced, the switch piston 2 moves towards the direction far away from the spring 6 under the action of the spring force, the inner cavity of the control cavity 9 sucks air from the air exhaust channel 10, the two valve plates 3 are gradually opened along the guide rail 5 until the outer edges of the two valve plates 3 are completely and tightly attached to the inner wall of the valve body 1, and the cannon bolt is closed again.
The invention relates to a high-pressure air cannon breechblock capable of being automatically opened and closed, which can be automatically closed when compressed air or energy storage media such as carbon dioxide are filled, can be automatically opened when a cannonball is shot, and can be automatically reset after being shot, so that the problem that the traditional breechblock needs manual operation is solved, and the breechblock has the characteristics of simple structure, convenience in operation, quick response, opening and resetting time of less than 1s, and capability of being repeatedly used.
Drawings
FIG. 1 is a schematic diagram of an automatic breech block of an air cannon in accordance with a first embodiment in a closed position;
FIG. 2 is a schematic diagram of an automatic breech block of an air cannon in an open state according to a first embodiment;
FIG. 3 is a top view of the valve body 1 of FIG. 1;
FIG. 4 is a sectional view taken along line A-A of FIG. 1 with the valve plate 3, the stem 7 and the support rod 8 removed;
FIG. 5 is a top view of the valve seat 4 of FIG. 1;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;
fig. 7 is a sectional view taken along line a-a of fig. 1.
Detailed Description
The first embodiment is as follows: the embodiment is an automatic breechblock of a high-pressure air cannon, as shown in fig. 1-7, and specifically comprises a valve body 1, a switch piston 2, a valve plate 3, a valve seat 4, a guide rail 5, a spring 6, a mandrel 7, a support rod 8, a control cavity 9 and a support rib 11;
the valve body 1 and the control cavity 9 are both hollow cylindrical structures, two ends of the valve body 1 are both open, one end of the valve body is an air inlet end, and the other end of the valve body is an air outlet end; both ends of the control cavity 9 are provided with cover bodies; the control cavity 9 is arranged at the center of the inner cavity of the valve body 1, the outer wall of the control cavity 9 close to the air inlet end of the valve body 1 is respectively fixed with one ends of the four supporting ribs 11, and the other ends of the four supporting ribs 11 are respectively fixed on the inner wall of the valve body 1; an exhaust channel 10 is arranged in the cover body of the control cavity 9 close to the air inlet end of the valve body 1, one end of the exhaust channel 10 is communicated with the inner cavity of the control cavity 9, and the other end of the exhaust channel 10 penetrates through the inside of one support rib 11 and the side wall of the valve body 1 to be communicated with the atmosphere; a plurality of air inlet channels 9-1 are symmetrically arranged on the cover body of the control cavity 9 close to the air outlet end of the valve body 1, and the air inlet channels 9-1 are all through holes;
a valve seat 4 is fixed on the inner wall of the valve body 1 close to the air outlet end, the valve seat 4 is of a circular ring structure, two grooves 4-1 are symmetrically arranged on the upper surface of the valve seat 4 opposite to the air outlet end of the valve body 1, a guide rail 5 is of a cuboid structure, and two ends of the guide rail 5 are respectively fixed in the two grooves 4-1; the surface of the guide rail 5 is flush with the surface of the valve seat 4 on the side relatively far away from the air outlet end of the valve body 1;
the switch piston 2 is of a cylindrical structure, the switch piston 2 is arranged in the control cavity 9, the side face of the switch piston 2 is tightly attached to the inner wall of the control cavity 9, a spring 6 is fixed between the switch piston 2 and the inner wall of the control cavity 9, which is close to the air inlet end of the valve body 1, the spring 6 is in a compressed state, the surface of the switch piston 2, which is opposite to the spring 6, is fixed with one end of a support rod 8, the other end of the support rod 8 is fixed with a mandrel 7, the support rod 8 is vertical to the mandrel 7, and the mandrel 7 is hinged with two valve plates 3; the two valve plates 3 are both positioned on one side of the valve seat 4 and the guide rail 5 which are relatively far away from the air outlet end of the valve body 1, and the outer edges of the two valve plates 3 are both in sliding connection with the valve seat 4 and the guide rail 5; when the two valve plates 3 are unfolded to the maximum angle in the valve body 1, the outer edges of the two valve plates 3 are completely and tightly attached to the inner wall of the valve body 1, and the included angle alpha of the two valve plates 3 is 170-175 degrees in the state; the guide rail 5 and the spindle 7 are perpendicular.
The working principle of the automatic breechblock of the high-pressure air cannon of the embodiment is as follows: the air inlet end (the upper end of the valve body 1 in the figure 1) of the valve body 1 is communicated with an air storage chamber, the shell is arranged at the air outlet end (the lower end of the valve body 1 in the figure 1), and the air inlet end of the valve body 1 is of a hollow structure, so that the pressure of the air storage chamber and the pressure of the part outside the control cavity 9 in the inner cavity of the valve body 1 are always kept consistent; the inner cavity of the control chamber 9 is connected to the atmosphere via an exhaust passage 10.
When the pressure P of the gas storage chamber before the cannonball is launched does not reach the preset pressure for the cannonball launching, the switch piston 2 is tightly attached to one side of the control cavity 9 close to the gas outlet end of the valve body 1 under the atmospheric pressure and the pressure of the spring 6, the valve plate 3 is tightly pressed on the valve seat 4, and the breechblock is in a closed state (figure 1);
when the cannonball is to be shot, the compressed air causes the pressure P in the air storage chamber to rise, the pressure P is simultaneously acted on one side of the switch piston 2 close to the support rod 8, the acting force on the side is gradually increased and acted on the switch piston 2 through the air inlet channel 9-1, when the pressure P exceeds the pretightening force of the spring 6 and the atmospheric pressure, the switch piston 2 moves towards the direction of the spring 6, the gas in the inner cavity of the control cavity 9 is discharged through the exhaust passage 10, the switch piston 2 drives the mandrel 7 to move towards the direction of the spring 6 through the support rod 8, the two valve plates 3 hinged on the mandrel 7 are gradually closed under the action of the pressure P, the free ends of the two valve plates 3 always slide on the guide rail 5 in the closing process, the valve port is opened, and the high-pressure gas P is ejected from the gas storage chamber, passes through the valve seat 4 and the guide rail 5 and acts on the bottom of the cannonball to push the cannonball to shoot (shown in figure 2).
After the cannonball is ejected, the pressure in the air storage chamber is reduced, the pressure applied to the switch piston 2 through the air inlet channel 9-1 is also reduced, the acting force is reduced, the switch piston 2 moves towards the direction far away from the spring 6 under the action of the spring force, the inner cavity of the control cavity 9 sucks air from the air exhaust channel 10, the two valve plates 3 are gradually opened along the guide rail 5 until the outer edges of the two valve plates 3 are completely and tightly attached to the inner wall of the valve body 1, and the breechblock is closed again (figure 1). It should be noted that P in this section does not represent a pressure value, but represents a physical quantity of pressure.
The second embodiment is as follows: the first difference between the present embodiment and the specific embodiment is: the valve seat 4 and the valve body 1 are fixedly connected in a threaded, pin or welding mode. The rest is the same as the first embodiment.
The third concrete implementation mode: the present embodiment differs from the first or second embodiment in that: the mandrel 7 and the support rod 8 are fixed in a connecting mode of threads, welding, pins or semi-rings. The others are the same as in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment mode and one of the first to third embodiment modes is: two ends of the guide rail 5 are respectively welded in the two grooves 4-1. The rest is the same as one of the first to third embodiments.
The fifth concrete implementation mode: the fourth difference between this embodiment and the specific embodiment is that: the air inlet channel 9-1 is a round hole. The rest is the same as the fourth embodiment.
The invention was verified with the following tests:
test one: the test is an automatic breechblock of a high-pressure air cannon, as shown in figures 1-7, and specifically comprises a valve body 1, a switch piston 2, a valve plate 3, a valve seat 4, a guide rail 5, a spring 6, a mandrel 7, a support rod 8, a control cavity 9 and a support rib 11;
the valve body 1 and the control cavity 9 are both hollow cylindrical structures, two ends of the valve body 1 are both open, one end of the valve body is an air inlet end, and the other end of the valve body is an air outlet end; both ends of the control cavity 9 are provided with cover bodies; the control cavity 9 is arranged at the center of the inner cavity of the valve body 1, the outer wall of the control cavity 9 close to the air inlet end of the valve body 1 is respectively fixed with one ends of the four supporting ribs 11, and the other ends of the four supporting ribs 11 are respectively fixed on the inner wall of the valve body 1; an exhaust channel 10 is arranged in the cover body of the control cavity 9 close to the air inlet end of the valve body 1, one end of the exhaust channel 10 is communicated with the inner cavity of the control cavity 9, and the other end of the exhaust channel 10 penetrates through the inside of one support rib 11 and the side wall of the valve body 1 to be communicated with the atmosphere; a plurality of air inlet channels 9-1 are symmetrically arranged on the cover body of the control cavity 9 close to the air outlet end of the valve body 1, and the air inlet channels 9-1 are all through holes;
a valve seat 4 is fixed on the inner wall of the valve body 1 close to the air outlet end, the valve seat 4 is of a circular ring structure, two grooves 4-1 are symmetrically arranged on the upper surface of the valve seat 4 opposite to the air outlet end of the valve body 1, a guide rail 5 is of a cuboid structure, and two ends of the guide rail 5 are respectively fixed in the two grooves 4-1; the surface of the guide rail 5 is flush with the surface of the valve seat 4 on the side relatively far away from the air outlet end of the valve body 1;
the switch piston 2 is of a cylindrical structure, the switch piston 2 is arranged in the control cavity 9, the side face of the switch piston 2 is tightly attached to the inner wall of the control cavity 9, a spring 6 is fixed between the switch piston 2 and the inner wall of the control cavity 9, which is close to the air inlet end of the valve body 1, the spring 6 is in a compressed state, the surface of the switch piston 2, which is opposite to the spring 6, is fixed with one end of a support rod 8, the other end of the support rod 8 is fixed with a mandrel 7, the support rod 8 is vertical to the mandrel 7, and the mandrel 7 is hinged with two valve plates 3; the two valve plates 3 are both positioned on one side of the valve seat 4 and the guide rail 5 which are relatively far away from the air outlet end of the valve body 1, and the outer edges of the two valve plates 3 are both in sliding connection with the valve seat 4 and the guide rail 5; when the two valve plates 3 are unfolded to the maximum angle in the valve body 1, the outer edges of the two valve plates 3 are completely and tightly attached to the inner wall of the valve body 1, and the included angle alpha of the two valve plates 3 is 170-175 degrees in the state; the guide rail 5 is vertical to the mandrel 7; the valve seat 4 is fixedly connected with the valve body 1 in a welding mode; the mandrel 7 and the support rod 8 are fixed in a welding and connecting mode; two ends of the guide rail 5 are respectively welded in the two grooves 4-1; the air inlet channel 9-1 is a round hole.
The working principle of the automatic breechblock of the high-pressure air cannon in the test is as follows: the air inlet end (the upper end of the valve body 1 in the figure 1) of the valve body 1 is communicated with the air storage chamber and is fixed by adopting a welding mode, the air outlet end (the lower end of the valve body 1 in the figure 1) is provided with a shell, the air outlet end is connected with a barrel by adopting a threaded connection mode, and the air inlet end of the valve body 1 is of a hollow structure, so that the pressure of the air storage chamber and the part of the inner cavity of the valve body 1 outside the control cavity 9 is always kept consistent; the inner cavity of the control chamber 9 is connected to the atmosphere via an exhaust passage 10.
When the pressure P of the gas storage chamber before the cannonball is launched does not reach the preset pressure for the cannonball launching, the switch piston 2 is tightly attached to one side of the control cavity 9 close to the gas outlet end of the valve body 1 under the atmospheric pressure and the pressure of the spring 6, the valve plate 3 is tightly pressed on the valve seat 4, and the breechblock is in a closed state (figure 1);
when the cannonball is to be shot, the compressed air causes the pressure P in the air storage chamber to rise, the pressure P is simultaneously acted on one side of the switch piston 2 close to the support rod 8, the acting force on the side is gradually increased and acted on the switch piston 2 through the air inlet channel 9-1, when the pressure P exceeds the pretightening force of the spring 6 and the atmospheric pressure, the switch piston 2 moves towards the direction of the spring 6, the gas in the inner cavity of the control cavity 9 is discharged through the exhaust passage 10, the switch piston 2 drives the mandrel 7 to move towards the direction of the spring 6 through the support rod 8, the two valve plates 3 hinged on the mandrel 7 are gradually closed under the action of the pressure P, the free ends of the two valve plates 3 always slide on the guide rail 5 in the closing process, the valve port is opened, and the high-pressure gas P is ejected from the gas storage chamber, passes through the valve seat 4 and the guide rail 5 and acts on the bottom of the cannonball to push the cannonball to shoot (shown in figure 2).
After the cannonball is ejected, the pressure in the air storage chamber is reduced, the pressure applied to the switch piston 2 through the air inlet channel 9-1 is also reduced, the acting force is reduced, the switch piston 2 moves towards the direction far away from the spring 6 under the action of the spring force, the inner cavity of the control cavity 9 sucks air from the air exhaust channel 10, the two valve plates 3 are gradually opened along the guide rail 5 until the outer edges of the two valve plates 3 are completely and tightly attached to the inner wall of the valve body 1, and the breechblock is closed again (figure 1). It should be noted that P in this section does not represent a pressure value, but represents a physical quantity of pressure.
The test relates to a high-pressure air cannon breechblock capable of being automatically switched on and off, the breechblock can be automatically closed when compressed air or energy storage media such as carbon dioxide are filled, the breechblock is automatically opened when a cannonball is launched, resetting is automatically realized after the cannonball is launched, the problem that a traditional breechblock needs manual operation is avoided, and the breechblock has the characteristics of simple structure, convenience in operation, quick response, and capability of being repeatedly used, wherein the starting time and the resetting time are less than 1 s.
Claims (5)
1. An automatic breechblock of a high-pressure air cannon is characterized by consisting of a valve body (1), a switch piston (2), a valve plate (3), a valve seat (4), a guide rail (5), a spring (6), a mandrel (7), a support rod (8), a control cavity (9) and a support rib (11);
the valve body (1) and the control cavity (9) are both of hollow cylinder structures, two ends of the valve body (1) are both open, one end of the valve body is an air inlet end, and the other end of the valve body is an air outlet end; both ends of the control cavity (9) are provided with cover bodies; the control cavity (9) is arranged in the center of the inner cavity of the valve body (1), the outer wall of the control cavity (9) close to the air inlet end of the valve body (1) is fixed with one end of each of the four support ribs (11), and the other end of each of the four support ribs (11) is fixed on the inner wall of the valve body (1); an exhaust channel (10) is arranged in the cover body of the control cavity (9) close to the air inlet end of the valve body (1), one end of the exhaust channel (10) is communicated with the inner cavity of the control cavity (9), and the other end of the exhaust channel (10) penetrates through the inside of one support rib (11) and the side wall of the valve body (1) to be communicated with the atmosphere; a plurality of air inlet channels (9-1) are symmetrically arranged on the cover body of the control cavity (9) close to the air outlet end of the valve body (1), and the air inlet channels (9-1) are all through holes;
a valve seat (4) is fixed on the inner wall of the valve body (1) close to the air outlet end, the valve seat (4) is of a circular ring structure, two grooves (4-1) are symmetrically formed in the upper surface of the valve seat (4) relatively far away from the air outlet end of the valve body (1), the guide rail (5) is of a cuboid structure, and two ends of the guide rail (5) are respectively fixed in the two grooves (4-1); the surface of the guide rail (5) is flush with the surface of the valve seat (4) on one side relatively far away from the air outlet end of the valve body (1);
the switch piston (2) is of a cylindrical structure, the switch piston (2) is arranged in the control cavity (9), the side face of the switch piston (2) is tightly attached to the inner wall of the control cavity (9), a spring (6) is fixed between the switch piston (2) and the inner wall of the control cavity (9) close to the air inlet end of the valve body (1), the spring (6) is in a compression state, the surface of the switch piston (2), which is opposite to the spring (6), is fixed with one end of a support rod (8), the other end of the support rod (8) is fixed with a mandrel (7), the support rod (8) is vertical to the mandrel (7), and the mandrel (7) is hinged with two valve plates (3); the two valve plates (3) are both positioned on one side of the valve seat (4) and the guide rail (5) which is relatively far away from the air outlet end of the valve body (1), and the outer edges of the two valve plates (3) are in sliding connection with the valve seat (4) and the guide rail (5); when the two valve plates (3) are unfolded to the maximum angle in the valve body (1), the outer edges of the two valve plates (3) are completely and tightly attached to the inner wall of the valve body (1), and the included angle alpha of the two valve plates (3) is 170-175 degrees in the state; the guide rail (5) is vertical to the mandrel (7).
2. The automatic breech block of an air cannon according to claim 1, characterized in that the valve seat (4) is fixedly connected with the valve body (1) by means of screw thread, pin or welding.
3. An automatic breech block for high-pressure air cannons, according to claim 1, characterised in that the mandrel (7) is fixed to the support bar (8) by means of a screw, welding, pin or semi-ring connection.
4. An automatic breech block for air cannons, according to claim 1, characterized in that the two ends of the guide rail (5) are welded in the two grooves (4-1), respectively.
5. An automatic breech block for air cannons, according to claim 1, characterized in that the air inlet channel (9-1) is a circular hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010113225.3A CN111380402B (en) | 2020-02-24 | 2020-02-24 | Automatic breechblock of high-pressure air cannon |
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| CN202010113225.3A CN111380402B (en) | 2020-02-24 | 2020-02-24 | Automatic breechblock of high-pressure air cannon |
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| CN111380402B true CN111380402B (en) | 2022-01-18 |
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| CN201411180Y (en) * | 2009-06-19 | 2010-02-24 | 郑州欧亚空气炮有限公司 | Air cannon controlled by two-position two-way electromagnetic valve |
| CN101580161A (en) * | 2009-06-23 | 2009-11-18 | 郑州欧亚空气炮有限公司 | Balance chamber supercharged piston fast reposition air cannon |
| CN202041118U (en) * | 2011-04-28 | 2011-11-16 | 西北工业大学 | Air floatation piston type launching device |
| CN102620014A (en) * | 2012-03-16 | 2012-08-01 | 王启定 | Anti-freezing back valve for smoke pipe of gas water heater |
| CN206618322U (en) * | 2017-03-23 | 2017-11-07 | 台州市莱恩克警报器有限公司 | A kind of Lifesaving Heaving Device |
| CN109059643A (en) * | 2018-07-27 | 2018-12-21 | 西北工业大学 | A kind of air bubble negative pressure trigger mechanism |
| CN209990966U (en) * | 2018-12-29 | 2020-01-24 | 浙江海博石油设备有限公司 | Vacuum pressure valve |
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| CN111380402A (en) | 2020-07-07 |
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