Bullet support separating structure
By using the bullet-holding separation structure of the blocking cylinder, the sealing cylinder and the support assembly in the gas cannon, the problems of unstable separation efficiency and large additional mass in the prior art are solved, and the rapid, reliable separation and efficient launch of the bullet body are achieved.
Patent Information
- Application Number
- CN202411923741.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2025-02-28
AI Technical Summary
The existing gas cannon's bullet-stack separation method has problems such as unstable separation efficiency, large additional mass, high structural complexity and poor adaptability, which limits the performance improvement of the high-speed launch test of the bullet body.
A retractable separation structure including a blocking cylinder, a sealing cylinder and a support assembly is adopted to quickly separate the sealing cylinder from the elastic body by blocking the blocking block, and the additional mass of the retractable is reduced by a support ring made of nylon.
The rapid separation of the support bracket is achieved, the additional mass of the support bracket is reduced, the impact on the projectile body during separation is reduced, and the efficiency and reliability of the test are improved.
Smart Images
Figure CN119533194A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of projectile high-speed launch test, and in particular to a sabot separation structure. Background Art
[0002] As a special high-overload simulation equipment, the first-level gas cannon has many advantages. It uses compressed high-pressure air to push the test projectile forward and reach a certain speed, thereby completing the launch of the test projectile. Compared with traditional artillery, the air cannon has the advantages of clean launch energy, safety and reliability. At the same time, the initial velocity range of the test projectile is wide and the adjustability is good. It can launch test projectiles of various shapes and materials. The test projectile has good arbitrariness and can be continuously adjusted. The test repeatability is relatively good, which can meet most high-speed and various high-overload test requirements. During the launch of the gas cannon, since the diameter of the existing gas cannon launch tube is larger than the diameter of the projectile when the projectile is launched, it is necessary to design a sabot so that the sabot and the gun barrel can achieve frictional contact. However, this method will increase the additional mass of the projectile launch, which is not conducive to the study of the projectile posture after launch. Therefore, the separation problem between the projectile and the sabot has always been a key factor restricting its performance improvement.
[0003] The traditional methods of sabot separation are mainly divided into two types: aerodynamic separation and mechanical separation: Pneumatic separation designs the geometric shape of the sabot so that the sabot is separated from the projectile during high-speed flight by the combined action of the shock wave at the launch tube exit and the surrounding flow field. The structure of the sabot is simple and easy to process; however, the aerodynamic force at the front end of the projectile will reduce the high-speed launch capability of the projectile, and the flight length required for separation is relatively long. For this reason, the gas gun must be equipped with a sufficiently long free-flight target chamber. Whether it is used indoors or built outdoors, the reserved space is large and the modification cost is high. When encountering tests that require the separation of the projectile body and sabot in a short distance, it cannot meet the test requirements.
[0004] Mechanical sabot separation is achieved by installing a mechanical separation structure at the muzzle to quickly complete the sabot separation process in this structure. However, in order to achieve a reliable separation effect, the traditional sabot separation method often uses a relatively complex mechanical structure, and will generate a relatively strong impact force and vibration during separation, which will also cause a great impact and overload on the projectile body, and the sabot fragments generated in the structure need to be processed after each firing. This not only increases the difficulty of design and manufacturing, but also reduces the reliability of the system to a certain extent. The complex structure means more potential failure points and increases the cost of maintenance and repair.
[0005] In summary, although the traditional sabot separation method can achieve the separation of sabot and warhead to a certain extent, it has the disadvantages of unstable separation efficiency, high material requirements, high structural complexity and poor adaptability. Therefore, in practical applications, it is necessary to comprehensively consider various factors and seek a more efficient, reliable and adaptable sabot separation method. Summary of the invention
[0006] In view of the deficiencies of the above-mentioned related prior arts, the present application provides a cartridge separation structure, which can not only realize the rapid separation of the cartridge, but also reduce the additional mass of the cartridge, and alleviate the impact on the projectile body during separation, and has strong practicality.
[0007] In order to achieve the above object, the present invention adopts the following technologies: A support separation structure comprises a blocking cylinder, a sealing cylinder and a supporting assembly.
[0008] The blocking cylinder is connected to the end of the gun barrel, and two symmetrically arranged blocking blocks are provided on the inner wall of the blocking cylinder along the circumferential direction, and the blocking blocks are connected to the blocking cylinder through shear pins; the sealing cylinder is fitted in the gun barrel and is movable along its axial direction, and a projectile is provided at the end of the sealing cylinder away from the bottom of the gun barrel. When in use, the sealing cylinder enters the blocking cylinder, and the end abuts against the blocking block, and the shear pin is cut off, and the projectile is separated from the sealing cylinder; the support assembly includes two symmetrically arranged support modules connected to the end of the sealing cylinder, the support module is located in the blocking cylinder, and is arranged alternately with the blocking blocks, including a plurality of support rings arranged at intervals along the axial direction of the blocking cylinder, the support ring is arc-shaped, and the angle between the two ends is less than 180 degrees, which is used to limit the circumferential side of the projectile.
[0009] Furthermore, one end of the blocking block facing the barrel is triangular, so as to increase the shear force.
[0010] Furthermore, the inner diameter of the barrier tube is larger than the inner diameter of the gun barrel.
[0011] Furthermore, annular platforms are provided on the sides of both ends of the sealing tube, and two annular grooves are provided on the side walls of the annular platforms. A sealing ring is matched in the annular groove away from the center of the sealing tube, and a guide ring is matched in the annular groove close to the center of the sealing tube. The outer diameter of the guide ring is larger than the outer diameter of the annular platform and matches with the inner wall of the gun barrel.
[0012] Furthermore, a through hole is provided at one end of the sealing tube near the bottom of the barrel, a pull rod is passed through the through hole, the end of the pull rod near the bottom of the barrel is connected to the connecting rod, the connecting rod and the pull rod are coaxially arranged, and the end is passed through the bottom of the barrel, the other end of the pull rod is provided with a detachable connecting screw, and a through hole is provided at one end of the sealing tube away from the bottom of the barrel, the diameter of the through hole is larger than the through hole, the connecting screw is located in the through hole and connected to the bottom of the projectile, and when in use, the connecting screw is separated from the pull rod.
[0013] Furthermore, a convex shaft is provided at one end of the pull rod away from the bottom of the barrel, a groove is provided at the end of the connecting screw, the convex shaft is located in the groove, an annular limiting groove is provided on the circumferential side of the convex shaft, and a plurality of locking screws are passed through the circumferential direction of the connecting screw, and the end of the locking screw is located in the limiting groove.
[0014] Furthermore, the support module also includes an end plate and a clamping ring, the end plate and the clamping ring are both arc-shaped, and the end plate is installed at the end of the sealing cylinder, the support ring is located between the end plate and the clamping ring, and a plurality of vertical rib plates are provided between the end plate and the clamping ring along the circumferential direction, the inner sides of the end plate and the support ring are both provided with a plurality of first clamping grooves penetrating at both ends along the circumferential direction, the vertical rib plates are matched in the first clamping grooves, the side surfaces of the vertical rib plates are provided with a plurality of second clamping grooves along the length direction thereof, and the end plate and the support ring are both matched in the second clamping grooves; Furthermore, a plurality of third clamping grooves are provided on the bottom surface of the clamping ring along the circumferential direction, and the ends of the vertical rib plates are fitted in the third clamping grooves.
[0015] Furthermore, the end surface of the clamping ring is in a concave arc shape.
[0016] The beneficial effects of the present invention are as follows: the sealing cylinder is blocked by the blocking block to achieve rapid separation from the projectile, and the sealing cylinder and the projectile can also be separated to ensure that the projectile flies out of the blocking cylinder smoothly; the use of a nylon support ring to support the projectile can reduce the additional mass of the support, and setting the end face of the retaining ring to an inwardly concave arc can also ensure rapid separation between the support ring and the projectile, reducing the impact on the projectile during separation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.
[0018] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the present application.
[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of an embodiment of the present application.
[0020] Figure 3 for Figure 2 An enlarged schematic diagram of point A.
[0021] Figure 4 This is a three-dimensional schematic diagram of a support assembly according to an embodiment of the present application installed on a sealing cylinder.
[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the sealing cylinder according to an embodiment of the present application.
[0023] Figure 6 for Figure 5 An enlarged schematic diagram of point B.
[0024] Figure 7 It is a three-dimensional schematic diagram of a support module according to an embodiment of the present application. DETAILED DESCRIPTION
[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the implementation modes of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.
[0026] like Figure 1 to Figure 7 As shown, an embodiment of the present application provides a support separation structure, including: a blocking cylinder 1, a sealing cylinder 2, and a supporting assembly 3.
[0027] The blocking cylinder 1 is connected to the end of the gun barrel 4. Two symmetrically arranged blocking blocks 101 are provided on the inner wall of the blocking cylinder 1 along the circumferential direction. The blocking blocks 101 are connected to the blocking cylinder 1 through shear pins 102. The sealing cylinder 2 is fitted in the gun barrel 4 and is movable along its axial direction. A projectile 201 is provided at one end of the sealing cylinder 2 away from the bottom of the gun barrel 4. When the projectile 201 needs to be fired, the sealing cylinder 2 enters the blocking cylinder 1, and the end abuts against the blocking block 101, and the shear pin 102 is cut off, and the projectile 201 is separated from the sealing cylinder 2. The support assembly 3 includes two symmetrically arranged support modules connected to the end of the sealing cylinder 2. The support module is located in the blocking cylinder 1 and is arranged alternately with the blocking blocks 101 at intervals. It includes a plurality of support rings 301 arranged at intervals along the axial direction of the blocking cylinder 1. The support ring 301 is arc-shaped, and the angle between the two ends is less than 180 degrees, which is used to limit the circumferential side of the projectile 201. To ensure that the axis of the projectile 201 coincides with the axis of the gun barrel 4.
[0028] Specifically, if there is a face-to-face collision between the blocking block 101 and the sealing tube 2, the impact force will be dispersed, thereby affecting the projectile 201 and affecting the flight posture of the projectile 201. Therefore, the end of the blocking block 101 facing the barrel 4 is set to be a triangle, thereby increasing the shear force and making the force on the blocking block 101 more concentrated, which can not only achieve the shearing of the shear pin 102 more quickly, but also reduce the impact on the projectile 201.
[0029] Specifically, the inner diameter of the blocking cylinder 1 is larger than the inner diameter of the gun barrel 4, so that after the sealing cylinder 2 enters the blocking cylinder 1, there is a gap between the sealing cylinder 2 and the blocking cylinder 1, further avoiding the sealing cylinder 2 and the blocking block 101 from affecting the posture of the projectile 201 when they collide.
[0030] More specifically, flange seats are provided on both the blocking tube 1 and the gun barrel 4, and the two flange seats are connected by bolts, so that the blocking tube 1 and the gun barrel 4 are firmly connected.
[0031] Specifically, an annular platform 202 is provided on both ends of the sealing cylinder 2, and two annular grooves 203 are provided on the side walls of the annular platform 202. A sealing ring 204 is provided in the annular groove 203 away from the center of the sealing cylinder 2, and a guide ring 205 is provided in the annular groove 203 close to the center of the sealing cylinder 2. The outer diameter of the guide ring 205 is larger than the outer diameter of the annular platform 202, and cooperates with the inner wall of the barrel 4. High-pressure gas is introduced between the sealing cylinder 2 and the bottom of the barrel 2 to realize the launch of the sealing cylinder 2 and the projectile 201. The sealing ring 204 enables the sealing cylinder 2 to withstand the high pressure from the gas storage chamber to ensure the sealing before launching, and the guide ring 205 ensures that the sealing cylinder 2 moves along the axis of the barrel 4 during the launching process; and the sealing cylinder 2 realizes the support of the projectile and the sealing between itself and the barrel 4, so that when using projectiles 201 of different specifications, it can also meet the needs.
[0032] Specifically, a through hole 206 is provided at one end of the sealing cylinder 2 close to the bottom of the barrel 4, a pull rod 207 is passed through the through hole 206, and one end of the pull rod 207 close to the bottom of the barrel 4 is connected to a connecting rod 208. The connecting rod 208 is coaxially arranged with the pull rod 207, and the end is passed through the bottom of the barrel 4. A detachable connecting screw 209 is provided at the other end of the pull rod 207. A through hole 210 is provided at one end of the sealing cylinder 2 away from the bottom of the barrel 4. The diameter of the through hole 210 is larger than the through hole 206. The connecting screw 209 is located in the through hole 210 and connected to the bottom of the projectile 201, so that the projectile 201 is installed on the end of the sealing cylinder 2 through the pull rod 207, and the pull rod 207 can be pulled by the connecting rod 208, so as to prevent the projectile 201 from moving and ensure that the axis of the projectile 201 is aligned with the axis of the barrel 4. The overlap can also prevent the projectile 201 from slipping out of the barrel 4 when the projectile 201 is fired at an angle. When the sealing cylinder 2 starts to drive the projectile 201 to move in the barrel 4, the connecting rod 208 moves synchronously with the sealing cylinder 2. At this time, the pull rod 207 can still ensure the posture of the projectile 201 under the action of inertia. As the sealing cylinder 2 continues to move, the sealing cylinder 2 contacts the blocking block 101. At this time, the shear pin 102 will be cut off, and the projectile 201 will be separated from the pull rod 207. Since the blocking block 101 has a blocking effect on the sealing cylinder 2 at this time, it will have a backward deceleration effect on the sealing cylinder 2. Moreover, since the collision process does not directly intercept the projectile, it has little effect on the structure, so that when the projectile 201 flies out of the blocking cylinder 1, the projectile 201 can be smoothly separated from the sealing cylinder 2.
[0033] Specifically, in order to facilitate the separation between the pull rod 207 and the projectile 201, a protruding shaft 211 is provided at one end of the pull rod 207 away from the bottom of the barrel 4, and a groove 213 is provided at the end of the connecting screw 209. The protruding shaft 211 is located in the groove 213, and an annular limiting groove 212 is provided around the protruding shaft 211. A plurality of locking screws 214 are passed through the connecting screw 209 along the circumferential direction, and the end of the locking screw 214 is located in the limiting groove 212. After the sealing tube 2 abuts against the blocking block 101, the locking screw 214 will be cut off, thereby achieving the separation of the pull rod 207 and the projectile 201.
[0034] Specifically, the support module also includes an end plate 302 and a snap ring 303. The end plate 302 and the snap ring 303 are both arc-shaped, and the end plate 302 is installed at the end of the sealing cylinder 2. The support ring 301 is located between the end plate 302 and the snap ring 303, and a plurality of vertical ribs 304 are arranged between the end plate 302 and the snap ring 303 along the circumferential direction. The inner sides of the end plate 302 and the support ring 301 are both provided with a plurality of first grooves 305 penetrating at both ends along the circumferential direction. The vertical ribs 304 are matched in the first grooves 305, and the side surfaces of the vertical ribs 304 are provided with A plurality of second slots 306 are provided, and the end plate 302 and the support ring 301 are both fitted in the second slots 306; a plurality of third slots 307 are provided on the bottom surface of the snap ring 303 along the circumferential direction, and the end of the rib plate 304 is fitted in the third slot 307. The end plate 302, the snap ring 303 and the rib plate 304 are connected to each other by snapping, which can reduce the dead weight of the support module, and because the support module only plays a supporting role, the additional mass during the overall launch can be reduced to avoid affecting the flight of the projectile 201.
[0035] Specifically, the support ring 301, the end plate 302, the clamping ring 303 and the vertical rib plate 304 are all made of nylon, which can reduce the weight and reduce the impact on the posture of the projectile 201, and the end face of the clamping ring 303 is a concave arc, so that when the projectile 201 flies out, under the action of wind resistance, the clamping ring 303 will be in an open state, further separating the support ring 301 from the projectile 201, thereby reducing the impact on the projectile 201.
[0036] Specifically, a plurality of exhaust holes 103 are provided around the barrier tube 1 for exhausting the high-pressure gas transferred into the barrier tube 1 during the launching of the projectile 201 , so as to avoid the occurrence of detonation and reduce the impact on the projectile 201 .
[0037] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.
Claims
1. A support separation structure, characterized in that: include: A blocking tube (1) connected to an end of a gun barrel (4), wherein the inner wall of the blocking tube (1) is provided with two symmetrically arranged blocking blocks (101) along a circumferential direction, and the blocking blocks (101) are connected to the blocking tube (1) via shear pins (102); A sealing cylinder (2) is fitted into the gun barrel (4) and is arranged to move along the axial direction thereof. An elastic body (201) is arranged at one end of the sealing cylinder (2) away from the bottom of the gun barrel (4). When in use, the sealing cylinder (2) enters the blocking cylinder (1), and the end thereof abuts against the blocking block (101), thereby cutting off the shear pin (102), and the elastic body (201) is separated from the sealing cylinder (2); A support assembly (3) comprising two support modules symmetrically arranged and connected to the ends of the sealing cylinder (2), the support modules being located in the blocking cylinder (1) and arranged alternately with the blocking blocks (101), and comprising a plurality of support rings (301) arranged at intervals along the axis of the blocking cylinder (1), the support rings (301) being arc-shaped, with an angle between the two ends being less than 180 degrees, and being used for limiting the circumference of the projectile (201).
2. The support separation structure according to claim 1, characterized in that: One end of the blocking block (101) facing the gun barrel (4) is triangular and is used to increase shear force.
3. The support separation structure according to claim 1, characterized in that: The inner diameter of the blocking tube (1) is greater than the inner diameter of the gun barrel (4).
4. The support separation structure according to claim 1, characterized in that: Annular platforms (202) are provided on the side surfaces of both ends of the sealing cylinder (2), and two annular grooves (203) are provided on the side walls of the annular platforms (202). A sealing ring (204) is matched in the annular groove (203) away from the center of the sealing cylinder (2), and a guide ring (205) is matched in the annular groove (203) close to the center of the sealing cylinder (2). The outer diameter of the guide ring (205) is larger than the outer diameter of the annular platform (202), and is matched with the inner wall of the gun barrel (4).
5. The support separation structure according to claim 1, characterized in that: A through hole (206) is provided at one end of the sealing tube (2) close to the bottom of the barrel (4), a pull rod (207) is passed through the through hole (206), and one end of the pull rod (207) close to the bottom of the barrel (4) is connected to a connecting rod (208), the connecting rod (208) is coaxially arranged with the pull rod (207), and the end is passed through the bottom of the barrel (4), and a detachable connecting screw (209) is provided at the other end of the pull rod (207), and a through hole (210) is provided at one end of the sealing tube (2) away from the bottom of the barrel (4), the diameter of the through hole (210) is larger than that of the through hole (206), the connecting screw (209) is located in the through hole (210) and is connected to the bottom of the projectile (201), and when in use, the connecting screw (209) is separated from the pull rod (207).
6. The support separation structure according to claim 5, characterized in that: A convex shaft (211) is provided at one end of the pull rod (207) away from the bottom of the gun barrel (4), a groove (213) is provided at the end of the connecting screw (209), the convex shaft (211) is located in the groove (213), an annular limiting groove (212) is provided on the circumference of the convex shaft (211), and a plurality of fixing screws (214) are passed through the circumferential direction of the connecting screw (209), and the end of the fixing screw (214) is located in the limiting groove (212).
7. The support separation structure according to claim 1, characterized in that: The support module further comprises an end plate (302) and a snap ring (303); the end plate (302) and the snap ring (303) are both arc-shaped, and the end plate (302) is mounted on the end of the sealing cylinder (2); the support ring (301) is located between the end plate (302) and the snap ring (303); a plurality of vertical rib plates (304) are provided between the end plate (302) and the snap ring (303) along a circumferential direction; a plurality of first grooves (305) penetrating at both ends are provided on the inner sides of the end plate (302) and the support ring (301) along a circumferential direction; the vertical rib plates (304) are fitted in the first grooves (305); a plurality of second grooves (306) are provided on the side surfaces of the vertical rib plates (304) along their length direction; the end plate (302) and the support ring (301) are fitted in the second grooves (306); The bottom surface of the clamping ring (303) is provided with a plurality of third clamping grooves (307) along a circumferential direction, and the ends of the vertical rib plates (304) are fitted in the third clamping grooves (307).
8. The support separation structure according to claim 7, characterized in that: The end surface of the clamping ring (303) is in the shape of an inwardly concave arc.