Primary firecracker quick-opening mechanism

Abstract

The invention provides a primary gas gun quick-opening mechanism, which belongs to the technical field of primary gas gun launching, and comprises a T-shaped three-way pipe, one end of the three-way pipe is connected with a gas storage chamber, the lower end of the three-way pipe is connected with a gun barrel, a sealing ring is arranged on the inner wall of the three-way pipe, a flange plate is arranged at one end of the three-way pipe, a circular pipe is arranged along the middle of the flange plate, and a piston rod assembly is arranged in the circular pipe. The piston rod assembly comprises a sealing piston, and the appearance of the sealing piston is matched with the inner wall of the sealing ring. A cylinder is arranged at the top of the protective cover, a cylinder impact block is arranged at the output end of the cylinder, the cylinder impact block is connected with a cross beam rod, the middle of the cross beam rod abuts against an impact head during sealing, and the impact head horizontally penetrates through a U-shaped groove of the cylinder impact block during opening. The scheme provided by the invention can be used for carrying out ultrahigh-speed and high-frequency launch tests, meanwhile, the three-way pipe is replaced to be connected with the gun barrel through the connecting flange, replacement is convenient, and the test efficiency is improved; the overall structure is simple, and machining is easy.

Description

Technical Field

[0001] The invention belongs to the technical field of first-stage gas gun launching, and in particular relates to a first-stage gun quick-opening mechanism. Background Art

[0002] The quick-opening valve mechanism of a gas cannon is mainly used to control the rapid release of gas, thereby accelerating the movement of objects such as projectiles. The working process is generally that the valve is closed in the initial state, and the chamber storing the gas remains sealed. When it is necessary to launch, the valve opens quickly, allowing high-pressure gas to flow into the launch pipe in a very short time, pushing the projectile to move.

[0003] At present, the release mechanism of the gas chamber of the gas-driven light gas gun usually adopts piston type, membrane rupture type or mechanical seal direct release type. The piston type has a simple structure and high reliability, but it is mainly composed of basic components such as piston, cylinder body, piston rod, etc., with large space and complex maintenance. It involves components such as piston, cylinder body, hydraulic oil seal, etc., with high manufacturing difficulty and poor adaptability. The rupture mode has sensitive response and high safety, but the membrane rupture device and membrane rupture operation are relatively complicated, and the test cost is high. After the diaphragm ruptures, fragments will be generated, which will damage other components in the pipeline, which may affect the movement trajectory and launch effect of the projectile, need to be cleaned and handled in time, and have high requirements on the diameter of the projectile. There are certain requirements and poor adaptability. The mechanical seal direct release type has a simple structure and can adapt to more diameters of different projectiles. It has high adaptability, but this structure adds a sabot seal, which increases the launch mass, resulting in greater pressure during launch, which weakens the maximum capacity of the equipment itself. During reflection, the friction is increased due to the influence of the "O" ring on the sabot, causing additional energy loss and low efficiency. During assembly, the seal is added so it needs to be pushed in slowly, and due to the increase in the diameter of the barrel, the friction will increase greatly. It is difficult to install the projectile to the sealing position without mechanical equipment, so the assembly is complicated. Summary of the invention

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a first-stage gun quick-opening mechanism, which can be used to carry out ultra-high-speed and high-frequency firing tests. At the same time, the three-way pipe and the gun barrel are connected by a connecting flange, which is convenient for replacement and improves the test efficiency; and the overall structure is simple and easy to process.

[0005] In order to achieve the purpose of the present invention, the following scheme is proposed: A first-stage gas gun quick-opening mechanism, comprising: A tee pipe has a T-shaped structure, one end of the horizontal portion of the tee pipe is connected to the air storage chamber, and the lower end of the vertical portion is connected to the gun barrel. A sealing ring is provided on the inner wall of one end of the horizontal portion of the tee pipe, and a flange is provided on the other end of the horizontal portion of the tee pipe. A circular tube is provided along the axial direction of the flange, and a piston rod assembly is provided movably along the axial direction of the circular tube. The piston rod assembly includes a piston rod movably arranged in the circular tube along the axial direction of the circular tube, and a sealing piston is provided after one end of the piston rod extends out of one end of the circular tube. The shape of the sealing piston is adapted to the inner wall of the sealing ring, and a first annular groove is provided in the outer circumference of the sealing piston, and a first sealing ring is provided in the first annular groove. A striking head is provided after the other end of the piston rod extends out of the other end of the circular tube, and a second annular groove is provided on the inner wall of the other end of the circular tube, and a second sealing ring is provided in the second annular groove, and the inner ring of the second sealing ring is in close contact with the outer wall of the piston rod; The protective cover is of cylindrical structure, and its opening is fixedly connected to the outer wall of the flange with bolts. A cylinder is vertically arranged on the top of the protective cover, and a cylinder impact block is arranged after the output end of the cylinder extends into the protective cover, and the cylinder impact block is of an inverted U-shaped structure, and its opening is vertically downward. A crossbeam is connected to the bottom of the cylinder impact block, and sliders are respectively arranged on one side of the crossbeam. The sliders are slidably connected to a slide rail, and the slide rail is vertically installed on the flange along a direction parallel to the output end of the cylinder. When sealing, the middle part of the crossbeam abuts against the impact head, and the sealing piston moves to the inside of the sealing ring. When opening, the impact head horizontally passes through the U-shaped groove of the cylinder impact block, and the sealing piston moves out of the sealing ring.

[0006] Furthermore, the flange is fixed to the other end of the horizontal portion of the tee pipe by bolt connection.

[0007] Furthermore, a linear bearing is provided between the inner wall of one end of the circular tube and the piston rod, and a first buffer pad with a cylindrical structure is provided on the outer wall of one end of the circular tube, and the piston rod is inserted through the center of the horizontal portion of the first buffer pad.

[0008] Furthermore, both ends of the piston rod respectively adopt a hollow structure.

[0009] Furthermore, a pad is provided at the middle portion of one side of the crossbeam.

[0010] Furthermore, a notch groove is provided on the upper side of the opening of the protective cover, and a cylinder mounting seat is provided at the lower end of the cylinder body of the cylinder. The cylinder mounting seat is an inverted L-shaped structure, and its vertical part is correspondingly arranged in the notch groove, and the horizontal part is fixed to the flange with bolts. The horizontal part of the cylinder mounting seat is located at the upper end of the slide rail, and triangular ribs are provided on both sides of the cylinder mounting seat.

[0011] Furthermore, an intercepting frame is provided in the protective cover. The intercepting frame has a U-shaped structure, and the opening direction of the intercepting frame is consistent with the opening direction of the protective cover. One end of the vertical part on both sides of the intercepting frame is respectively provided with protruding support plates on both sides. The support plate and the flange are fixedly connected with bolts. A second buffer pad is provided on the inner side of the horizontal part of the intercepting frame, and the second buffer pad corresponds to the axis of the piston rod.

[0012] Furthermore, a U-shaped seat is provided on the inner side of the transverse part of the blocking frame, the opening of the U-shaped seat faces upward, and the cross-section of the U-shaped seat is an L-shaped structure, and its transverse part is connected to the transverse part of the blocking frame. The second buffer pad is in a T-shaped structure, and the transverse part of the second buffer pad is vertically inserted into the U-shaped seat along the opening of the U-shaped seat, and the transverse part of the second buffer pad is connected to the transverse part of the blocking frame by using a locking nut, and the vertical part of the second buffer pad extends out of the U-shaped seat.

[0013] Furthermore, a group of parallel and spaced strip plates are respectively provided on the outer walls of the vertical parts on both sides of the barrier frame, and the strip plates are arranged along the length direction of the vertical parts on both sides of the barrier frame.

[0014] The beneficial effects of the present invention are: A sealing ring is arranged inside the connecting end between the three-way pipe and the air storage chamber to reduce the weight of the sealing piston, so as to reduce the friction of the piston assembly and thus improve the reaction speed. The sealing piston is adapted to the sealing ring, so there is no need to arrange a spring support for sealing, which further reduces the weight of the piston assembly, reduces the firing pressure, improves safety, and has a simple overall structure, is easy to process, and has good versatility and scalability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 A three-dimensional schematic diagram of the external structure of the present application is shown.

[0017] Figure 2 A schematic cross-sectional view of the sealing state of the present application is shown.

[0018] Figure 3 This application shows Figure 2 A local enlarged schematic diagram of point A.

[0019] Figure 4 This application shows Figure 2 A partial enlarged schematic diagram of point B.

[0020] Figure 5 A schematic cross-sectional view of the application when it is opened is shown.

[0021] Figure 6 A schematic diagram of the three-dimensional structure of the present application with the protective cover removed is shown.

[0022] Figure 7 A schematic diagram of the three-dimensional structure of the present application without the blocking frame, the cylinder and its components is shown.

[0023] Figure 8A schematic structural diagram of the protective cover and the cylinder mounting seat of the present application is shown.

[0024] Fig. 9 A schematic structural diagram of the arresting frame of the present application is shown.

[0025] Markings in the figure: tee pipe -1, sealing ring -11, flange -12, round tube -13, second annular groove -131, second sealing ring -132, linear bearing -133, first buffer pad -134, piston assembly -14, piston rod -141, sealing piston -142, first annular groove -143, first sealing ring -144, impact head -145, protective cover -2, cylinder -21, cylinder mounting seat -211, triangular rib -212, cylinder impact block -22, crossbeam -23, gasket -231, slider -24, slide rail -25, notch groove -26, blocking frame -27, support plate -271, second buffer pad -272, U-shaped seat -273, strip plate -274. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the examples described in the present invention are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] like Figure 1-Figure 9 As shown, this embodiment provides a first-stage gas gun quick-opening mechanism, including a three-way pipe 1 and a protective cover 2.

[0028] Specifically, Figure 1-Figure 4 As shown, the tee pipe 1 is of T-shaped structure, each opening of the tee pipe 1 is provided with a connecting flange, one end of the horizontal portion of the tee pipe 1 is provided with an air storage chamber, and one end of the horizontal portion of the tee pipe 1 is connected to the output end of the air storage chamber by bolts, and the lower end of the vertical portion of the tee pipe 1 is connected to the gun barrel by bolts. This connection method can be compatible with more types of gun barrels, solves the problem of gun barrel adaptation, and thus reduces the test cost.

[0029] A sealing ring 11 is welded to the inner wall of one end of the transverse portion of the tee pipe 1 facing the air storage chamber, and a flange 12 is provided at the other end of the transverse portion of the tee pipe 1. The flange 12 and the tee pipe 1 are connected by bolts. A round tube 13 is provided along the axial direction of the flange 12. Both ends of the round tube 13 extend out of both sides of the flange 12 respectively, and the length of the round tube 13 extending out of the flange 12 toward one end of the tee pipe 1 is greater than the length of the other end of the round tube 13 extending out of the flange 12.

[0030] A first buffer pad 134 is provided on the outer wall of one end of the circular tube 13 facing the tee pipe. The first buffer pad 134 is a cylindrical structure with an opening facing one end of the circular tube 13 and is sleeved on one end of the circular tube 13 for easy replacement. A second annular groove 131 is recessed on the inner wall of the other end of the circular tube 13. A second sealing ring 132 is provided in the second annular groove 131. The second sealing ring 132 is an "O" ring.

[0031] A piston rod assembly 14 is provided to move along the axis direction of the circular tube 13. The piston rod assembly 14 includes a piston rod 141, a sealing piston 142, a first sealing ring 144, and a striking head 145. The two ends of the piston rod 141 adopt a hollow shaft structure, and the middle part adopts a solid shaft structure, which ensures the strength and rigidity of the piston rod 141 while reducing the weight of the piston rod 141. The piston rod 141 is provided in the circular tube 13 to move along the axis direction of the circular tube 13. One end of the piston rod 141 extends out of one end of the circular tube 13 facing the tee pipe 1 and the center of the horizontal part of the first buffer pad 134 in sequence, and the other end of the piston rod 141 extends out of the other end of the circular tube 13, and the inner ring of the second sealing ring 132 is in close contact with the outer wall of the other end of the piston rod 141. A linear bearing 133 is provided between the end of the piston rod 141 facing the tee pipe 1 and the corresponding inner wall of the circular tube 13, and one end of the linear bearing 133 is connected to the end of the circular tube 13 facing the tee pipe 1 by screws.

[0032] The sealing piston 142 is arranged at one end of the piston rod 141 facing the inside of the tee pipe 1, and the outer dimensions of the sealing piston 142 match the inner wall dimensions of the sealing ring 11, so as to reduce the outer dimensions of the sealing piston 142, thereby reducing the weight of the sealing piston 142. The outer periphery of the sealing piston 142 is recessed with a first annular groove 143, and the first sealing ring 144 is an "O" ring. The first sealing ring 144 is clamped in the first annular groove 143, so as to achieve a sealing effect at the sealing ring 11 of the tee pipe 1, so that there is no need to set a spring support for sealing, thereby reducing the overall weight of the result. The impact head 145 is arranged at the other end of the piston rod 141.

[0033] like Figure 1-Figure 2 As shown, the protective cover 2 is a cylindrical structure, and its opening is sleeved with the outer wall of the flange 12, and the outer wall of the opening of the protective cover 2 is fixedly connected with the outer periphery of the flange 12 by screws, which is used to protect against the situation that fragments or parts fly out and injure people in case the piston rod breaks. Figure 8 As shown, the top of the protective cover 2 is recessed toward the direction of the flange 12 and provided with a notch groove 26, in which a cylinder mounting seat 211 is provided, and the cylinder mounting seat 211 is an inverted L-shaped structure, and the vertical portion of the cylinder mounting seat 211 extends into the notch groove 26, and the horizontal portion of the cylinder mounting seat 211 is fixedly connected to the flange 12 by bolts, and triangular ribs 212 are provided on both sides of the cylinder mounting seat 211, respectively, for improving the strength of the cylinder mounting seat 211. Figure 6-Figure 7As shown, the cylinder 21 is mounted on the top surface of the vertical part of the cylinder mounting plate 211, and the output end of the cylinder 21 passes vertically downward through the vertical part of the cylinder mounting plate 211 and is connected to the cylinder impact block 22. The cylinder impact block 22 is an inverted U-shaped structure, and its opening is vertically downward. The lower ends of the vertical parts on both sides of the cylinder impact block 22 are connected to the same crossbeam 23, and the surface of the crossbeam 23 facing the flange 12 is respectively provided with a slider 24, and the slider 24 is slidably connected to a slide rail 25, and the slide rail 25 is vertically installed on the flange 12 parallel to the output end of the cylinder 21.

[0034] like Figure 2-Figure 5 As shown, when sealing, the sealing piston 142 is located in the sealing ring 11, and the middle of the crossbeam 23 abuts against the impact head 145. Preferably, in order to improve the service life of the crossbeam 23, a collision block 231 is provided in the middle of the side of the crossbeam 23 facing the flange 12. The collision block 231 is fixedly connected to the crossbeam 23 by bolts. When the impact head 145 is deformed by multiple collisions of the collision block 231, the collision block 231 can be replaced by removing the bolts connected to the collision block 231, which is easy to operate. When opening, the collision head 145 passes through the U-shaped groove of the cylinder collision block 22 in the horizontal direction, and the sealing piston 142 moves out of the sealing ring 11.

[0035] like Figure 5-Figure 6 , Fig. 9 As shown, an intercepting frame 27 is provided along the length direction of the protective cover 2, and the intercepting frame 27 is arranged in the protective cover 2, the intercepting frame 27 is a U-shaped structure, and the opening direction of the intercepting frame 27 is consistent with the opening direction of the protective cover 2, and one end of the vertical parts on both sides of the intercepting frame 27 is respectively provided with protruding support plates 271 on both sides, and the support plates 271 are fixedly connected to the flange 12 by bolts, and strip plates 274 are respectively provided outside the vertical parts on both sides of the intercepting frame 27, and the strip plates 274 are parallel and spaced along the length direction of the intercepting frame 27. A group of them is provided to increase the strength of the intercepting frame 27. A U-shaped seat 273 is provided on the inner side of the transverse part of the blocking frame 27, the opening of the U-shaped seat 273 is vertically upward, and the cross-section of the U-shaped seat 273 is an L-shaped structure, and its transverse part is vertically connected to the inner side surface of the transverse part of the blocking frame 27, and a second buffer pad 272 is inserted vertically downward along the opening of the U-shaped seat 273. The second buffer pad 272 is a T-shaped structure, and the width of its transverse part is consistent with the length of the inner wall of the transverse part of the U-shaped seat 273, and the transverse part of the second buffer pad 272 is connected to the U-shaped seat 273. When the second buffer pad 272 is inserted to the bottom of the U-shaped seat 273, the vertical part of the second buffer pad 27 corresponds to the axis of the piston rod 141, so as to buffer the impact force of the impact head 145.

[0036] It can be seen that the main components are installed on the flange 12, and maintenance can be performed by removing the bolts and screws on the flange 12, which is convenient. In addition, the weight of the piston rod 141 and the sealing piston are reduced, so that the high pressure of the air storage chamber can generate a maximum acceleration of 20000m / s2, and the opening time can be achieved in the ms level.

[0037] Specific working principle: The cylinder 21 pushes the cylinder impact block 22 in the vertical direction to control the launch. When sealing, the sealing piston 142 is sealed at the sealing ring 11 in the tee pipe 1 using the first sealing ring 144. The pressure generated during sealing is transmitted through the piston rod 141, and then abuts against the impact head 145 through the gasket 231 on the inner side of the crossbeam 23, so that the structure is balanced and the sealing effect is achieved. At this time, the output end of the cylinder 21 is in a retracted state, and the force is applied by the slider 24 and the screws to fix the slide rail 25 to the flange 12 to achieve a balanced state.

[0038] During firing, the cylinder 21 pushes the cylinder impact block 22 vertically downward, causing the cylinder impact block 22 to push the crossbar 23, and causing the crossbar 23 to drive the sliders 24 at both ends of one side to move vertically downward along the slide rail 25, so that the impact head 145 passes through the U-shaped groove of the cylinder impact block 22, and moves rapidly under the action of pressure until it hits the second buffer pad 272 and stops. The sealing piston 142 is fully opened, and by opening the sealing piston, the high-pressure gas quickly enters the three-way pipe 1, and then enters the barrel to push the projectile to fire.

[0039] The above description is only a preferred embodiment of the present invention, and is not intended to be the only one or to limit the present invention. Those skilled in the art should understand that various changes or equivalent substitutions made to the present invention without departing from the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A first-stage gas cannon quick-opening mechanism, characterized in that: include: A tee pipe (1) is of a T-shaped structure. One end of the horizontal portion of the tee pipe (1) is connected to the gas storage chamber, and the lower end of the vertical portion is connected to the gun barrel. A sealing ring (11) is provided on the inner wall of one end of the horizontal portion of the tee pipe (1). A flange (12) is provided on the other end of the horizontal portion of the tee pipe (1). A round pipe (13) is provided along the axial direction of the flange (12). A piston rod assembly (14) is provided movably along the axial direction of the round pipe (13). The piston rod assembly (14) comprises a piston rod (141) movably provided in the round pipe (13) along the axial direction of the round pipe (13). One end of the piston rod (141) protrudes from one end of the round pipe (13) and is provided with a sealing ring. A sealing piston (142), the shape of the sealing piston (142) is adapted to the inner wall of the sealing ring (11), the outer circumference of the sealing piston (142) is recessed with a first annular groove (143), a first sealing ring (144) is arranged in the first annular groove (143), the other end of the piston rod (141) is extended out of the other end of the circular tube (13) and an impact head (145) is arranged thereafter, the inner wall of the other end of the circular tube (13) is provided with a second annular groove (131), a second sealing ring (132) is arranged in the second annular groove (131), and the inner ring of the second sealing ring (132) is in close contact with the outer wall of the piston rod (141); The protective cover (2) is of cylindrical structure, and its opening is fixedly connected to the outer wall of the flange (12) by screws. A cylinder (21) is vertically arranged on the top of the protective cover (2). A cylinder impact block (22) is arranged after the output end of the cylinder (21) extends into the protective cover (2). The cylinder impact block (22) is of an inverted U-shaped structure, and its opening is vertically downward. A crossbeam (23) is connected below the cylinder impact block (22), and a slider (21) is arranged on one side of the crossbeam (23). 24), the slider (24) is slidably connected to a slide rail (25), and the slide rail (25) is vertically installed on the flange (12) along the output end parallel to the cylinder (21). When sealing, the middle part of the crossbeam (23) abuts against the impact head (145), and the sealing piston (142) moves to the inside of the sealing ring (11). When opening, the impact head (145) horizontally passes through the U-shaped groove of the cylinder impact block (22), and the sealing piston (142) moves out of the sealing ring (11).

2. The first-stage gas cannon quick-opening mechanism according to claim 1, characterized in that: The flange (12) is fixed to the other end of the transverse portion of the tee pipe (1) by bolt connection.

3. The first-stage gas cannon quick-opening mechanism according to claim 1, characterized in that: A linear bearing (133) is provided between the inner wall of one end of the circular tube (13) and the piston rod (141), and a first buffer pad (134) of a cylindrical structure is sleeved on the outer wall of one end of the circular tube (13), and the piston rod (141) is inserted through the center of the horizontal portion of the first buffer pad (134).

4. The first-stage gas cannon quick-opening mechanism according to claim 1, characterized in that: Both ends of the piston rod (141) are hollow structures.

5. The first-stage gas cannon quick-opening mechanism according to claim 1, characterized in that: A liner (231) is provided at the middle portion of one side of the crossbeam (23).

6. The first-stage gas cannon quick-opening mechanism according to claim 1, characterized in that: A notch groove (26) is provided on the upper side of the opening of the protective cover (2), and a cylinder mounting seat (211) is provided at the lower end of the cylinder body of the cylinder (21). The cylinder mounting seat (211) is in an inverted L-shaped structure, with a vertical portion correspondingly arranged in the notch groove (26), a horizontal portion fixedly connected to the flange (12) by bolts, and a horizontal portion of the cylinder mounting seat (211) is located at the upper end of the slide rail (25), and triangular ribs (212) are respectively provided on both sides of the cylinder mounting seat (211).

7. The first-stage gas cannon quick-opening mechanism according to claim 1, characterized in that: An intercepting frame (27) is provided inside the protective cover (2). The intercepting frame (27) has a U-shaped structure, and the opening direction of the intercepting frame (27) is consistent with the opening direction of the protective cover (2). One end of the vertical portion on both sides of the intercepting frame (27) is respectively provided with a support plate (271) protruding on both sides. The support plate (271) is fixedly connected to the flange (12) by bolts. A second buffer pad (272) is provided on the inner side of the horizontal portion of the intercepting frame (27), and the second buffer pad (272) corresponds to the axis of the piston rod (141).

8. The first-stage gas cannon quick-opening mechanism according to claim 7, characterized in that: A U-shaped seat (273) is provided on the inner side of the transverse portion of the blocking frame (27), the opening of the U-shaped seat (273) faces upward, and the cross section of the U-shaped seat (273) is an L-shaped structure, and its transverse portion is connected to the transverse portion of the blocking frame (27), and the second buffer pad (272) is a T-shaped platform structure, and the transverse portion of the second buffer pad (272) is vertically inserted into the U-shaped seat (273) along the opening of the U-shaped seat (273), and the transverse portion of the second buffer pad is connected to the transverse portion of the blocking frame (27) by using a locking nut, and the vertical portion of the second buffer pad (272) extends out of the U-shaped seat (273).

9. The first-stage gas cannon quick-opening mechanism according to claim 7, characterized in that: The outer walls of the vertical parts on both sides of the blocking frame (27) are respectively provided with a group of parallel and spaced strip plates (274), and the strip plates (274) are arranged along the length direction of the vertical parts on both sides of the blocking frame (27).

Images