Rotary pipe weapon exhaust rear spraying device based on piston crankshaft
Through the linkage control device of the piston crankshaft and the crank slide principle, the exhaust rear injection device of the rotary pipe weapon is designed, which solves the problem of shared side back spraying of gunpowder gas in the rotary pipe weapon, achieves precise control and recoil reduction, and improves the reliability and firing performance of the device.
Patent Information
- Application Number
- CN202510777617.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-07-25
AI Technical Summary
How to design a shared side rear spray device in a pipe-turning weapon to accurately control the incoming gunpowder gas in the fire, while avoiding gas leakage to the unfired barrel, reducing recoil and reducing device complexity and weight.
The exhaust rear injection device of the rotary pipe weapon based on the piston crankshaft is adopted. Through the linkage control device and the crank slider principle, the precise side-side rear injection of gunpowder gas is achieved. The piston movement is used to drive the connecting rod and exhaust turntable to rotate, and the shared side-side rear nozzle reduces the recoil force and prevent gas from entering the unfired barrel.
The precise rear spray control of the pipe-turning weapon is realized, which reduces the recoil force, improves the reliability and movement accuracy of the device, and ensures that the initial velocity of the projectile remains unchanged.
Smart Images
Figure CN120368783A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of firearms, and particularly relates to an exhaust backspray device for a rotary barrel weapon based on a piston crankshaft. Background Art
[0002] Rotary barrel weapons adopt the principle of rotating barrels for sequential firing, and have characteristics such as high radio frequency, high firing rate, and large power, and are widely used in war scenarios that require fire coverage. When a rotary barrel weapon fires continuously at a high frequency, the gunpowder gas in the chamber will generate a large impact recoil force on the weapon itself, resulting in certain deformation of the frame and accompanied by a recoil displacement, which greatly affects the design accuracy of the rotary barrel weapon. Therefore, reducing the recoil force generated during the firing of a rotary barrel weapon will greatly improve the firing performance of the rotary barrel weapon.
[0003] Currently, the technology of using gunpowder gas to spray backward to reduce recoil is mostly applied to single-barrel weapons. A rotary barrel weapon consists of multiple barrels, and each barrel fires alternately while rotating at a high speed. If an independent side-backward spray pipe is installed on each barrel, it will greatly increase the complexity of the recoil reduction device, and also increase the weight at the front end of the rotary barrel weapon, increase the moment of inertia of the rotary barrel group, and increase the driving power of the rotary barrel weapon. How to design a common side-backward spray device for the rotary barrel group to accurately control the backward spray of the gunpowder gas of the barrel being fired sharing the common side-backward spray pipe, while preventing gas from entering other non-firing barrels, is the key problem in the design of the backspray recoil reduction device for rotary barrel weapons. Summary of the Invention
[0004] The purpose of the present invention is to provide an exhaust backspray device for a rotary barrel weapon based on a piston crankshaft, so as to accurately control the backward spray of the gunpowder gas of the barrel being fired into the shared side-backward spray pipe, while preventing gas leakage into other non-firing barrels, and converting the internal energy of the unutilized gunpowder gas in the chamber into the energy of backward spray to offset the recoil force.
[0005] The technical solution for achieving the purpose of the present invention is: an exhaust backspray device for a rotary barrel weapon based on a piston crankshaft, including a barrel, a front barrel hoop, a linkage control device, a connecting rod, an exhaust turntable, a rear barrel hoop, and a Laval nozzle; the barrels are circumferentially evenly distributed and fixedly connected through the front barrel hoop and the rear barrel hoop; the linkage control device is installed at the center position of the front barrel hoop, the exhaust turntable is rotatably installed at the center position of the rear barrel hoop and fixedly connected to the connecting rod, and the Laval nozzle is fixedly connected to the exhaust turntable; the crankshaft in the linkage control device is fixedly connected to the connecting rod, and based on the crank-slider principle, the gas pushes the piston in the linkage control device to move, drives the connecting rod to rotate, and further drives the exhaust turntable to rotate, so that the gunpowder gas sprays backward along the exhaust passage on the exhaust turntable and the Laval nozzle.
[0006] Compared with the prior art, the present invention has the following remarkable advantages:
[0007] (1) Through the design of the linkage control device, the present invention accurately controls the backward spraying of the common side of the gunpowder gas of the barrel being fired through the backward spraying pipe, and at the same time, no gas enters other barrels that are not firing.
[0008] (2) The present invention relies on the gunpowder gas generated during firing to push the piston to move, realizing the automatic reset of the linkage control device. Without a spring reset device, the risk of spring fatigue fracture is avoided, and the reliability of the device is improved.
[0009] (3) In the present invention, the crank-slider principle is used to realize the continuous rotation of the linkage control device, and the movement is more accurate and efficient.
[0010] (4) In the exhaust backward spraying device of the rotary barrel weapon of the present invention, when firing a projectile, and after the projectile passes through the front exhaust hole 101, it takes a certain amount of time for the gunpowder gas to push the piston 301 to move to a specified position, extending the time of the backward spraying of the gunpowder gas, making the most of the gunpowder gas energy during firing, and ensuring that the initial velocity of the projectile remains unchanged. Description of the Drawings
[0011] Figure 1 is the overall structure installation schematic diagram of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0012] Figure 2 is the overall structure cross-sectional view of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention when the piston moves to the limit position.
[0013] Figure 3 is the structural schematic diagram of the front barrel hoop of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0014] Figure 4 is the structural schematic diagram of the linkage control device of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0015] Figure 5 is the structural schematic diagram of the small arm of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0016] Figure 6 is the structural schematic diagram of the large arm of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0017] Figure 7 is the structural schematic diagram of the crankshaft of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0018] Figure 8 is the structural schematic diagram of the exhaust turntable of the exhaust backward spraying device of the rotary barrel weapon based on the piston crankshaft of the present invention.
[0019] Figure 9 It is a cross-sectional view of the exhaust turntable of the exhaust rear spray device of the rotary barrel weapon based on piston crankshaft of the present invention.
[0020] Figure 10 It is a schematic structural diagram of the rear barrel hoop of the exhaust rear spray device of the rotary barrel weapon based on piston crankshaft of the present invention. Specific embodiments
[0021] The terms used in the present invention are only for the purpose of illustrating the embodiments of the present invention and are not intended to limit the present invention. The following will be combined with the attached Figure 1-10 drawings to detail some embodiments of the present invention.
[0022] An exhaust rear spray device of a rotary barrel weapon based on piston crankshaft in an embodiment is used to reduce the recoil force generated during continuous shooting of the rotary barrel weapon. The device includes a barrel 1, a front barrel hoop 2, a linkage control device 3, a connecting rod 4, an exhaust turntable 5, a rear barrel hoop 6, a Laval nozzle 7 and a bearing 8;
[0023] The multiple barrels 1 are circumferentially distributed, and the barrels 1 are fixedly connected through the front barrel hoop 2 and the rear barrel hoop 6; each barrel 1 is fixed through a corresponding front sleeve 201 and a rear sleeve 601;
[0024] Each barrel 1 is provided with a front air guide hole 101 near the muzzle and a rear exhaust hole 102 far from the muzzle. The diameter of the front air guide hole 101 is smaller than that of the rear exhaust hole 102. The front air guide hole 101 and the rear exhaust hole 102 are located on the same side of the barrel 1 and their central axes are parallel and in the same plane;
[0025] The front barrel hoop 2 includes a uniform front sleeve 201, and a central hole 202 and an air guide channel 203 opened therein; the multiple barrels 1 are correspondingly fixedly installed in the front sleeve 201 and the front sleeve 201 coincides with the axis of the barrel 1. The central axis of the front air guide hole 101 on each barrel 1 coincides with the central axis of the air guide channel 203;
[0026] Among them, a part of the central hole 202 is used to install the bearing 8, and another part is used to provide an installation space for the linkage control device 3;
[0027] The linkage control device 3 includes a piston 301, a stud 302, a forearm 303, a large arm 304, and a crankshaft 305; the linkage control device 3 is located at the central hole 202 of the front barrel hoop 2, and the multiple pistons 301 are correspondingly and slidably installed in the multiple gas guide channels 203 of the front barrel hoop 2; one end of one piston 301 is rotatably connected to one end of a large arm through a stud 302, and the remaining pistons 301 are rotatably connected to one end of the forearm 303 through a stud 302; the other end of the forearm 303 is rotatably connected to the turntable end of the large arm 304 and is evenly distributed along the turntable end of the large arm 304; thus, the gunpowder gas sequentially pushes the piston 301 to move, realizing the relative rotation of the turntable end of the large arm 304 around the side axis of the crankshaft 305 and simultaneously realizing the reciprocating axial movement of the piston 301.
[0028] The main shaft of the crankshaft 305 is fixedly connected to one end of the connecting rod 4 and is rotatably connected to the front barrel hoop 2 through a bearing 8 (where the bearing 8 is installed in the central hole 202), thereby realizing the rotation of the crankshaft 305 and the connecting rod 4 around the central axis of the front barrel hoop 2; the side axis of the crankshaft 305 (parallel to the main shaft and spaced a certain distance) is coaxially and rotatably connected to the turntable center of the large arm 304;
[0029] The exhaust turntable 5 is provided with an exhaust channel 501 and an exhaust round hole 502, the exhaust round hole 502 is a counterbore and is sealed at one end; the exhaust turntable 5 is installed at the central position of the rear barrel hoop 6, the exhaust turntable 5 is fixedly connected to the other end of the connecting rod 4 and is rotatably connected to the rear barrel hoop 6 (support frame 603) through a bearing 8; thus, the rotation of the large arm 304 drives the crankshaft 305 to rotate, and then the crankshaft 305 drives the connecting rod 4 to rotate, and the connecting rod 4 drives the exhaust turntable 5 (relative to the rear barrel hoop 6) to rotate.
[0030] The rear barrel hoop 6 includes evenly distributed rear sleeves 601, provided exhaust holes 602, and a support frame 603 at the center; each barrel 1 is coaxially and fixedly installed in the rear sleeve 601, the exhaust hole 602 is used to connect the rear exhaust hole 102 of the barrel 1 with the exhaust channel 501 of the exhaust turntable 5, and the central axis of the exhaust hole 602 coincides with the central axis of the rear exhaust hole 102 of the barrel 1, and the support frame 603 is used to install the bearing 8.
[0031] The Laval nozzle 7 is located at the rear side of the rear barrel hoop 6 and is fixedly connected to the exhaust turntable 5, realizing the conduction of the Laval nozzle 7, the exhaust round hole 502, and the exhaust channel 501;
[0032] There are two bearings 8 in total, which are respectively located in the central hole 202 of the front barrel hoop 2 and the support frame 603 of the rear barrel hoop 6.
[0033] During the initial installation, in order to enable the device to exhaust air accurately, it is necessary to calibrate the initial positions of the key components. First, the crankshaft 305 needs to be installed so that the piston 301 moves to a position close to the center of the front barrel clamp 2. Then, the boom 304 is connected to the crankshaft 305 and the piston 301 to ensure that the symmetric center plane of the crankshaft 305 (the plane passing through the central axes of the main shaft and the side shaft is the symmetric center) coincides with the central axis of the gas guide channel 203. After that, the position of the exhaust turntable 5 is adjusted to ensure that the exhaust channel 501 coincides exactly with the exhaust hole 102 on the barrel 1 corresponding to the boom 304. When any barrel 1 fires, the device can immediately come into effect.
[0034] The boom 304 (or the forearm 303), the crankshaft 305, and the piston 301 can be simplified into a crank-slider mechanism. The boom 304 is regarded as the connecting rod, the crankshaft 305 is regarded as the crank, and the piston 301 is regarded as the slider. The crank rotates around the frame. If the length of the connecting rod is a, the length of the crank is b, the rotation angle of the crank is θ, and the distance between the slider and the rotation center of the crank is L, then there is a relational expression. Therefore, when the symmetric center line of the crankshaft 305 coincides with the central axis of the gas guide channel 203, the piston 301 reaches the limit position, and the stroke length of the piston 301 is equal to twice the length of the crankshaft 305 (i.e., the distance between the side shaft and the main shaft).
[0035] The working process of the exhaust afterspray device of the rotary barrel weapon based on the piston crankshaft of the present invention is as follows: When the rotary barrel weapon fires, each of the barrels 1 fires in turn at a designated position. When the barrel 1 is in the firing state, the other barrels 1 are in the ready-to-fire state. The gunpowder gas moves along the barrel 1 during the firing process and first passes through the exhaust hole 102 in the rear barrel 1. Since the exhaust turntable 5 blocks the rear exhaust hole 102, the gunpowder gas can only continue to move forward. Since the front air guide hole 101 is always in the open state, the gunpowder gas directly flows into the air guide channel 203 of the front barrel hoop 2 from the front air guide hole 101. The high-temperature and high-pressure gunpowder gas pushes the piston 301 to move in the direction of the center of the front barrel hoop 2. The piston 301 drives the crankshaft 305 to rotate. At the same time, the crankshaft 305 drives the other pistons 301 to move linearly in coordination within the air guide channel 203. The rotation of the crankshaft 301 will drive the connecting rod 4 to rotate, and then drive the exhaust turntable 5 to rotate. When the piston 301 moves to the position closest to the central hole 202, the central axis of the exhaust channel 501 in the exhaust turntable 5 will coincide with the central axis of the rear exhaust hole 102, achieving precise control. Then, a large amount of gunpowder gas will flow out through the rear exhaust hole 102. The gunpowder gas is ejected backward through the Laval nozzle 7, generating a reverse force and reducing the recoil force when the rotary barrel weapon fires. The gunpowder gas discharged from the rear exhaust hole 102 will cause the gunpowder gas in the barrel 1 to drop. In addition, the decrease in pressure takes a certain amount of time to propagate. And after the projectile passes through the front exhaust hole 101, it takes a certain amount of time for the gunpowder gas to push the piston 301 to move to the designated position. As long as it is ensured that when the projectile just shoots out of the muzzle, the influence caused by the drop in chamber pressure only propagates to the muzzle, then the entire firing process of the projectile will not be affected, achieving the purpose of not decreasing the initial velocity of the projectile.
[0036] In this embodiment, 6 barrels 1 are provided, 6 pistons 301 are provided, 6 stud pins 302 are provided, 5 small arms 303 are provided, 1 large arm 304 is provided, and 1 crankshaft 305 is provided.
[0037] At the initial installation position, the central axis of the exhaust hole 602 and the central axis of the rear exhaust hole 102 coincide with the central axis of the exhaust channel 501.
[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.
Claims
1. A rear exhaust spray device for a rotary tube weapon based on a piston crankshaft, characterized in that It includes a barrel (1), a front barrel clamp (2), a linkage control device (3), a connecting rod (4), an exhaust turntable (5), a rear barrel clamp (6), and a Laval nozzle (7); the barrels (1) are circumferentially evenly distributed and fixedly connected through the front barrel clamp (2) and the rear barrel clamp (6); the linkage control device (3) is installed at the central position of the front barrel clamp (2), the exhaust turntable (5) is rotatably installed at the central position of the rear barrel clamp (6), and is fixedly connected to the connecting rod (4), and the Laval nozzle (7) is fixedly connected to the exhaust turntable (5); the crankshaft (305) in the linkage control device (3) is fixedly connected to the connecting rod (4), and based on the crank-slider principle, the gas is used to push the piston in the linkage control device (3) to move, drive the connecting rod (4) to rotate, and then drive the exhaust turntable (5) to rotate, so that the gunpowder gas is ejected backward along the exhaust channel on the exhaust turntable (5) and the Laval nozzle (7).
2. The exhaust after-spray device of a rotary tube weapon based on a piston crankshaft according to claim 1, characterized in that, Each barrel (1) is provided with a front air guide hole (101) near the muzzle and a rear exhaust hole (102) far from the muzzle. The front air guide hole (101) and the rear exhaust hole (102) are located on the same side of the barrel (1), and their central axes are parallel and in the same plane.
3. The exhaust after-spray device for a rotary-barrel weapon based on a piston crankshaft according to claim 2, wherein The front barrel clamp (2) includes a uniform front sleeve (201), and a central hole (202) and a gas guide channel (203) opened; multiple barrels (1) are correspondingly fixedly installed in the front sleeve (201) and the axis of the front sleeve (201) coincides with the axis of the barrel (1). The central axis of the front air guide hole (101) on each barrel (1) coincides with the central axis of the gas guide channel (203); the central hole (202) is used to provide an installation space for the linkage control device (3).
4. The exhaust afterspray device of the rotary tube weapon based on a piston crankshaft according to claim 3, wherein, The linkage control device (3) includes a piston (301), a stud (302), a small arm (303), a large arm (304), and a crankshaft (305); each piston (301) is correspondingly slidably installed in each gas guide channel (203); one piston (301) is rotatably connected to one end of a large arm (304) through a stud (302), and the remaining pistons (301) are rotatably connected to one end of the small arm (303) through a stud (302); the other end of the small arm (303) is rotatably connected to the turntable end of the large arm (304) and is evenly distributed along the turntable end of the large arm (304); the main shaft of the crankshaft (305) is fixedly connected to one end of the connecting rod (4) and is rotatably connected to the front barrel clamp (2), so as to realize the rotation of the crankshaft (305) and the connecting rod (4) around the central axis of the front barrel clamp (2); the side shaft of the crankshaft (305) is coaxially and rotatably connected to the center of the turntable of the large arm (304).
5. The exhaust afterspray device for a rotary tube weapon based on a piston crankshaft according to claim 1, characterized in that, The exhaust turntable (5) is provided with an exhaust channel (501) and an exhaust round hole (502) inside. The exhaust turntable (5) is fixedly connected to the other end of the connecting rod (4) and is rotatably connected to the rear barrel clamp (6); the exhaust round hole (502) is a counterbore and one end is sealed.
6. The exhaust after-spray device for a rotary-barrel weapon based on a piston crankshaft according to claim 5, characterized in that The rear barrel hoop (6) includes evenly distributed rear sleeves (601), exhaust holes (602) provided thereon, and a support frame (603) located at the center; a barrel (1) is coaxially and fixedly installed in a rear sleeve (601), and the exhaust holes (602) are used to connect the rear exhaust holes (102) of the barrel (1) with the exhaust passage (501) of the exhaust turntable (5), and the central axis of the exhaust holes (602) coincides with the central axis of the rear exhaust holes (102) of the barrel (1).
7. The exhaust afterspray device for a rotary barrel weapon based on a piston crankshaft according to claim 6, characterized in that, In the initial installation position, the symmetric center of the crankshaft (305) refers to the plane passing through the central axes of the main shaft and the side shaft as the symmetric center, which coincides with the central axis of the air guiding passage (203); the central axis of the exhaust holes (602) and the central axis of the rear exhaust holes (102) on the barrel (1) corresponding to the large arm (304) both coincide with the central axis of the exhaust passage (501).
8. The exhaust afterspray device for a rotary cannon based on a piston crankshaft according to claim 7, characterized in that, The large arm (304) or the small arm (303), the crankshaft (305) and the piston (301) form a crank-slider mechanism. The large arm (304) serves as the connecting rod with a length of a; the crankshaft (305) serves as the crank with a length of b, and the rotation angle of the crank is θ; the piston (301) serves as the slider, and the distance between the rotation center of the piston (301) and the crankshaft (305) is L. Then the relationship satisfied is: When the symmetric center line of the crankshaft (305) coincides with the central axis of the air guiding passage (203), the piston (301) reaches the limit position.
9. The exhaust afterspray device for a rotary barrel weapon based on a piston crankshaft according to claim 4, characterized in that, The stroke length of the piston (301) is equal to twice the length of the crankshaft (305).