Primary gun quick opening mechanism

Abstract

The application provides a primary gas gun quick opening mechanism, and belongs to the technical field of primary gas gun launching. The mechanism comprises a tee-shaped three-way pipe, one end of the three-way pipe is connected with a gas storage chamber, the lower end is connected with a gun barrel, the inner wall of the three-way pipe is provided with a sealing ring, one end of the three-way pipe is provided with a flange plate, a circular pipe is arranged along the middle part of the flange plate, a piston rod assembly is arranged in the circular pipe, the piston rod assembly comprises a sealing piston, and the shape of the sealing piston is matched with the inner wall of the sealing ring. A protective cover is arranged, the top of the protective cover is provided with a cylinder, the output end of the cylinder is provided with a cylinder impact block, a cross beam rod is connected to the cylinder impact block, the middle part of the cross beam rod is in abutment with an impact head in the sealing state, and the impact head horizontally passes through a U-shaped groove of the cylinder impact block in the opening state. The scheme provided by the application can be used for carrying out super-high-speed and high-frequency launching tests, the three-way pipe and the gun barrel are connected through a connecting flange, the replacement is convenient, the test efficiency is improved, and the overall structure is simple and easy to process.

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 primarily controls the rapid release of gas, thereby accelerating the movement of objects such as projectiles. The valve typically closes initially, keeping the gas chamber sealed. When the time comes to fire, the valve rapidly opens, allowing high-pressure gas to flow into the launch tube in a fraction of a second, propelling the projectile.

[0003] At present, the release mechanism of the gas chamber of gas-driven light gas guns 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, piston rod, etc., with large space and complex maintenance. It involves components such as piston, cylinder, hydraulic oil seal, etc. inside, 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, the test cost is high, and fragments will be generated after the diaphragm ruptures, which will damage other components in the pipeline, which may affect the motion 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 different projectile diameters, with high adaptability, but this structure adds a cartridge seal, which increases the launch mass, resulting in greater pressure required for launch, weakening the maximum capacity of the equipment itself, and during reflection, the influence of the "O" ring on the cartridge increases the friction, 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 address the above-mentioned deficiencies in the prior art, the present invention provides a first-stage gun quick-opening mechanism that can be used to carry out ultra-high-speed and high-frequency firing tests. At the same time, the tee tube 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:

[0006] A first-stage gas gun quick-opening mechanism, comprising:

[0007] The tee pipe has a T-shaped structure, one end of the horizontal part of the tee pipe is connected to the gas storage chamber, and the lower end of the vertical part is connected to the gun barrel. A sealing ring is provided on the inner wall of one end of the horizontal part of the tee pipe, and a flange is provided on the other end of the horizontal part of the tee pipe. A circular tube is provided along the axial direction of the flange, and a piston rod assembly is provided for movement along the axial direction of the circular tube. The piston rod assembly includes a piston rod arranged in the circular tube and moving along the axial direction of the circular tube. 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. A first annular groove is provided in the outer periphery of the sealing piston. 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. A second annular groove is provided on the inner wall of the other end of the circular tube. 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.

[0008] The protective cover has a cylindrical structure, and its opening is fixed to the outer wall of the flange with bolts. A cylinder is vertically provided on the top of the protective cover, and a cylinder impact block is provided after the output end of the cylinder extends into the protective cover, and the cylinder impact block has an inverted U-shaped structure, and its opening is vertically downward. A crossbeam is connected to the bottom of the cylinder impact block, and a slider is provided on one side of the crossbeam. The slider is 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 passes horizontally through the U-shaped groove of the cylinder impact block, and the sealing piston moves out of the sealing ring.

[0009] Furthermore, the flange is fixed to the other end of the horizontal portion of the tee pipe by bolt connection.

[0010] 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 passed through the horizontal center of the first buffer pad.

[0011] Furthermore, both ends of the piston rod respectively adopt a hollow structure.

[0012] Furthermore, a pad is provided at the middle portion of one side of the crossbeam.

[0013] 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. The cylinder mounting seat is an inverted L-shaped structure, and its vertical part is 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.

[0014] Further, the protective cover is internally provided with a blocking frame, the blocking frame is in U-shaped structure, the opening direction of the blocking frame is consistent with the opening direction of the protective cover, one end of the vertical part of the two sides of the blocking frame is respectively provided with a protruding support plate, the support plate and the flange plate are fixedly connected through bolts, the inner side of the horizontal part of the blocking frame is provided with a second buffer pad, and the second buffer pad corresponds to the axis of the piston rod.

[0015] Further, the inner side of the horizontal part of the blocking frame is provided with a U-shaped seat, the opening of the U-shaped seat faces upward, the cross section of the U-shaped seat is in L-shaped structure, the horizontal part of the U-shaped seat is connected with the horizontal part of the blocking frame, the second buffer pad is in T-shaped structure, the horizontal part of the second buffer pad is vertically inserted into the U-shaped seat along the opening of the U-shaped seat, and the horizontal part of the second buffer pad is connected with the horizontal part of the blocking frame through a locking nut, and the vertical part of the second buffer pad extends out of the U-shaped seat.

[0016] Further, the outer wall of the vertical part of the two sides of the blocking frame is respectively provided with a group of strip-shaped plates which are parallel and spaced.

[0017] The beneficial effects of the present application are:

[0018] The sealing ring is arranged in the connecting end of the tee pipe and the gas storage chamber, so that the weight of the sealing piston is reduced, the friction of the piston assembly is reduced, the reaction speed is improved, the sealing piston is matched with the sealing ring, so that the elastic support is not needed for sealing, the weight of the piston assembly is further reduced, the launch pressure is reduced, the safety is improved, the overall structure is simple and easy to process, and good universality and expansibility are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are only for illustrating selected embodiments, rather than all possible embodiments, and are not intended to limit the scope of the present application.

[0020] Figure 1 A three-dimensional schematic diagram of the external structure of the present application is shown.

[0021] Figure 2 A state cross-sectional schematic diagram when the present application is sealed is shown.

[0022] Figure 3 A three-dimensional schematic diagram of the present application is shown. Figure 2 A local enlarged schematic diagram of A of the present application is shown.

[0023] Figure 4 A three-dimensional schematic diagram of the present application is shown. Figure 2 A local enlarged schematic diagram of B of the present application is shown.

[0024] Figure 5 A state cross-sectional schematic diagram when the present application is opened is shown.

[0025] Figure 6A schematic diagram of the three-dimensional structure of the present application with the protective cover removed is shown.

[0026] Figure 7 A schematic diagram of the three-dimensional structure of the present application without the blocking frame, cylinder and its components is shown.

[0027] Figure 8 A schematic structural diagram of the protective cover and the cylinder mounting base of the present application is shown.

[0028] Figure 9 A schematic structural diagram of the arresting frame of the present application is shown.

[0029] 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

[0030] 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 the embodiments.

[0031] like Figures 1-9 As shown, this embodiment provides a first-stage gas gun quick-opening mechanism, including a three-way pipe 1 and a protective cover 2.

[0032] Specifically, such as Figures 1-4 As shown, the tee pipe 1 has a T-shaped structure, and each opening of the tee pipe 1 is provided with a connecting flange. An air storage chamber is provided at one end of the horizontal portion of the tee pipe 1, and one end of the horizontal portion of the tee pipe 1 is connected to the output end of the air storage chamber by a bolt, and the lower end of the vertical portion of the tee pipe 1 is connected to the gun barrel by a bolt. This connection method can be used with more types of gun barrels, solves the problem of gun barrel adaptation, and thus reduces the test cost.

[0033] 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, and a circular tube 13 is provided along the axial direction of the flange 12. The two ends of the circular tube 13 extend out of both sides of the flange 12 respectively, and the length of the circular 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 circular tube 13 extending out of the flange 12.

[0034] 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 in 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.

[0035] A piston rod assembly 14 is provided for movement along the axis of the circular tube 13. This assembly comprises a piston rod 141, a sealing piston 142, a first sealing ring 144, and a striking head 145. Piston rod 141 is hollow at both ends and solid in the middle, ensuring its strength and rigidity while reducing its weight. Piston rod 141 is positioned within the circular tube 13, allowing it to move along its axis. One end of piston rod 141 extends from the end of the circular tube 13 facing the tee 1 and the center of the transverse portion of the first cushion 134. The other end of piston rod 141 extends from 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 piston rod 141. A linear bearing 133 is provided between the end of piston rod 141 facing the tee 1 and the corresponding inner wall of the circular tube 13. One end of linear bearing 133 is screwed to the end of the circular tube 13 facing the tee 1.

[0036] Sealing piston 142 is located at the end of piston rod 141 facing the interior of tee 1. The outer dimensions of sealing piston 142 match the inner dimensions of sealing ring 11, reducing its overall dimensions and, consequently, its weight. A first annular groove 143 is recessed into the outer periphery of sealing piston 142. A first sealing ring 144, an O-ring, is secured within first annular groove 143, achieving a seal against sealing ring 11 of tee 1. This eliminates the need for a spring retainer for sealing and reduces the overall weight of the assembly. A striking head 145 is located at the other end of piston rod 141.

[0037] like Figures 1-2 As shown, the protective cover 2 is a cylindrical structure, and its opening is sleeved with the outer wall of the flange 12. The outer wall of the opening of the protective cover 2 is fixedly connected to the outer periphery of the flange 12 with screws to protect against the possibility of piston rod breakage and flying debris or parts.Figure 8 As shown, the top of the protective cover 2 is recessed toward the flange 12 and provided with a notch 26. A cylinder mounting seat 211 is provided in the notch 26. The cylinder mounting seat 211 is in an inverted L-shaped structure, and the vertical portion of the cylinder mounting seat 211 extends into the notch 26. The horizontal portion of the cylinder mounting seat 211 is fixedly connected to the flange 12 with bolts. Triangular ribs 212 are provided on both sides of the cylinder mounting seat 211 to improve the strength of the cylinder mounting seat 211. Figures 6-7 As shown, cylinder 21 is mounted on the top surface of the vertical portion of cylinder mounting plate 211. The output end of cylinder 21 passes vertically downward through the vertical portion of cylinder mounting plate 211 and is connected to cylinder impact block 22. Cylinder impact block 22 has an inverted U-shaped structure with its opening facing vertically downward. The lower ends of the vertical portions on both sides of cylinder impact block 22 are connected to a common crossbar 23. The surface of crossbar 23 facing flange 12 is provided with sliders 24. Sliders 24 are slidably connected to a slide rail 25. Slide rail 25 is vertically mounted on flange 12 parallel to the output end of cylinder 21.

[0038] like Figures 2-5 As shown, when sealing, the sealing piston 142 is located within the sealing ring 11, and the middle portion of the crossbeam 23 abuts against the impact head 145. Preferably, to improve the service life of the crossbeam 23, an impact block 231 is provided in the middle portion of the side of the crossbeam 23 facing the flange 12. The impact block 231 is fixedly connected to the crossbeam 23 with bolts. When the impact head 145 is deformed by multiple impacts of the impact block 231, the impact block 231 can be replaced by removing the bolts connected to the impact block 231, which is easy to operate. When opening, the impact head 145 passes horizontally through the U-shaped groove of the cylinder impact block 22, and the sealing piston 142 moves out of the sealing ring 11.

[0039] like Figures 5-6 、 Figure 9As shown, an intercepting frame 27 is provided along the length direction of the protective cover 2, and the intercepting frame 27 is provided inside the protective cover 2. The intercepting frame 27 is a U-shaped structure. The opening direction of the intercepting frame 27 is consistent with the opening direction of the protective cover 2. One end of the vertical part on both sides of the intercepting frame 27 is respectively provided with a protruding support plate 271 on both sides. The support plate 271 is fixedly connected to the flange 12 with bolts. Strip plates 274 are respectively provided on the outside of the vertical parts on both sides of the intercepting frame 27. The strip plates 274 are parallel to and spaced apart along the length direction of the intercepting frame 27 to increase the strength of the intercepting frame 27. A U-shaped seat 273 is provided on the inner side of the horizontal 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 horizontal part is vertically connected to the inner side surface of the horizontal 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 horizontal part is consistent with the length of the inner wall of the horizontal part of the U-shaped seat 273, and the horizontal 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, which is used to buffer the impact force of the impact head 145.

[0040] As can be seen, all major components are mounted on flange 12. Maintenance can be performed simply by removing the bolts and screws on flange 12, making it easy to operate. Furthermore, the weight of piston rod 141 and sealing piston are reduced, allowing the high pressure in the air storage chamber to generate a maximum acceleration of 20,000 m / s², enabling an opening time in the millisecond range.

[0041] Specific working principle:

[0042] 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 on the flange 12 to achieve a balanced state.

[0043] 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 the crossbar 23 drives 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 stops after hitting the second buffer pad 272, and the sealing piston 142 is fully opened. By opening the sealing piston, the high-pressure gas quickly enters the tee pipe 1, and then enters the barrel to push the projectile to be fired.

[0044] 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. It should be understood by those skilled in the art that various changes or equivalent replacements 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: The tee (1) has a T-shaped structure, one end of the horizontal portion of the tee (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 (1), and a flange (12) is provided on the other end of the horizontal portion of the tee (1). A circular tube (13) is provided along the axial direction of the flange (12), and a piston rod assembly (14) is provided along the axial direction of the circular tube (13). The piston rod assembly (14) includes a piston rod (141) provided in the circular tube (13) and movable along the axial direction of the circular tube (13). One end of the piston rod (141) extends out of one end of the circular tube (13) and is provided with a sealing ring. A sealing piston (142) is provided, wherein the outer shape of the sealing piston (142) is adapted to the inner wall of the sealing ring (11); a first annular groove (143) is provided in the outer periphery of the sealing piston (142); a first sealing ring (144) is provided in the first annular groove (143); a striking head (145) is provided after the other end of the piston rod (141) extends out of the other end of the circular tube (13); a second annular groove (131) is provided 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); and an 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) has a cylindrical structure, and its opening is fixedly connected to the outer wall of the flange (12) by screws. A cylinder (21) is vertically provided on the top of the protective cover (2). The output end of the cylinder (21) extends into the protective cover (2) and is provided with a cylinder impact block (22). The cylinder impact block (22) has an inverted U-shaped structure, and its opening is vertically downward. A crossbeam (23) is connected to the bottom of the cylinder impact block (22), and a slider ( 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 gun 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 gun 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) with 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 gun quick-opening mechanism according to claim 1, characterized in that: A liner (231) is provided in the middle of one side of the crossbeam (23).

6. The first-stage gas gun 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 an inverted L-shaped structure, and its vertical portion is correspondingly arranged in the notch groove (26). The horizontal portion is fixedly connected to the flange (12) by bolts, and the horizontal portion of the cylinder mounting seat (211) is located at the upper end of the slide rail (25). 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: A blocking frame (27) is provided in the protective cover (2), and the blocking frame (27) has a U-shaped structure. The opening direction of the blocking frame (27) is consistent with the opening direction of the protective cover (2). One end of the vertical portion on both sides of the blocking 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 blocking frame (27), and the second buffer pad (272) corresponds to the axis of the piston rod (141).

8. The first-stage gas gun 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 gun quick-opening mechanism according to claim 7, characterized in that: The outer walls of the vertical portions 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 portions on both sides of the blocking frame (27).

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