Adjustable recoil fluid recoil machine for artillery

Abstract

The utility model discloses an adjustable recoil fluid recoil machine for an artillery. The adjustable recoil fluid recoil machine comprises a barrel body, the piston is mounted in the barrel and can move; the first cavity is positioned on one side of the piston; the second cavity is positioned on the other side of the piston; the piston rod is arranged in the second cavity and is fixedly connected with the piston; the center adjustable runner axially penetrates through the piston; the valve disc is mounted in the first cavity and abuts against the piston, and the valve disc is provided with a center flow channel groove capable of opening or closing the center adjustable flow channel; and the core rod is fixedly connected with the valve disc, is driven by a servo motor to rotate and is used for changing the position of the central runner groove relative to the central adjustable runner through rotation. The hydraulic resistance of recoil fluid can be effectively adjusted through launching feedforward control under the condition that the firepower efficiency and maneuvering characteristics of an armored vehicle are not changed, and the recoil force of artillery is greatly reduced.

Description

Technical Field

[0001] This utility model relates to artillery recoil technology, and in particular to an adjustable recoil mechanism for artillery. Background Technology

[0002] Currently, the PLA's main battle armored vehicles generally exhibit high gun barrel pressure and short recoil distance, resulting in significant recoil. To mitigate the adverse effects of recoil, measures such as increasing chassis load are necessary, but this significantly reduces the armored vehicle's mobility. In the face of a rapidly changing battlefield environment, decreased mobility not only makes the vehicle more vulnerable to enemy detection and destruction but also easily leads to missed opportunities. Simultaneously, reducing gun caliber to reduce recoil clearly contradicts the goal of improving firepower effectiveness, ultimately resulting in a long-term mutually restrictive relationship between the armored vehicle's firepower effectiveness and mobility. Therefore, a mutually beneficial approach is urgently needed: one that neither reduces nor even increases gun caliber to enhance firepower effectiveness, while simultaneously maintaining or even reducing the chassis structure and load to improve mobility. This requires finding the answer from the essence of the problem of reducing artillery recoil. Since the recoil-reducing device is directly related to reducing artillery recoil, we can look for solutions from the recoil-reducing device itself. The first thing to think of is to look for optimization and improvement measures in the structure of the recoil-reducing device.

[0003] The recoil mechanism consists of a recoil damper and a recoil return mechanism. When the gun recoils and generates kinetic energy, the recoil damper converts most of this energy into heat energy from the internal liquid (recoil fluid) and its components. As the temperature rises, this heat is dissipated into the surrounding atmosphere, thus controlling the gun's recoil motion. The recoil return mechanism, on the other hand, reversibly stores a small portion of the recoil energy, ensuring the gun returns to its pre-firing position. Clearly, the recoil damper plays a crucial role in reducing gun recoil, especially the recoil fluid within it, which is key to dissipating the heat generated by the recoil. In other words, the proper functioning of the recoil fluid determines whether the recoil damper can maximize its effectiveness in reducing gun recoil.

[0004] Moreover, as the number of consecutive shots increases, the temperature of the recoil mechanism gradually rises. The recoil fluid expands in volume as the temperature increases, reducing the space inside the recoil mechanism other than the fluid. This may cause the recoil section to not return to its original position. If firing continues, the recoil motion pattern of the artillery will change, eventually causing damage to the artillery. Summary of the Invention

[0005] The purpose of this invention is to provide an adjustable recoil mechanism with soft recoil, which changes the recoil force by controlling the size of the flow port with a motor, thus achieving dynamic adjustment and reducing the recoil force of the vehicle under different conditions to a certain extent, providing the possibility to further increase firepower efficiency and improve maneuverability.

[0006] This utility model discloses an adjustable liquid retraction mechanism for artillery, comprising a cylinder; a movable piston installed inside the cylinder; a first cavity located on one side of the piston; a second cavity located on the other side of the piston; a piston rod installed in the second cavity and fixedly connected to the piston; a central adjustable flow channel axially penetrating the piston; a valve disc installed in the first cavity and abutting against the piston, the valve disc having a central flow channel groove that can open or close the central adjustable flow channel; and a core rod fixedly connected to the valve disc and driven to rotate by a servo motor, used to change the position of the central flow channel groove relative to the central adjustable flow channel by rotation.

[0007] Preferably, the adjustable retraction liquid retraction mechanism for artillery of this invention further includes: a one-way flow channel disposed on the piston, having a one-way flow channel opening communicating with a second cavity; a slip ring disposed between the inner wall of the cylinder and the side wall of the piston, which can slide relative to the piston, for opening or closing the one-way flow channel opening; and the valve disc also has a one-way flow channel groove that can engage with the one-way flow channel.

[0008] Preferably, the unidirectional flow channel has its unidirectional flow channel opening facing the inner wall of the cylinder and connecting to the second cavity through the gap between the inner wall of the cylinder and the side of the piston.

[0009] Preferably, the slip ring is fixed to the inner wall of the cylinder.

[0010] Preferably, one end of the core rod passes through the piston and extends into the piston rod, and is rotatable relative to the piston rod.

[0011] Preferably, the other end of the core rod is connected to the reducer of the servo motor via a coupling, wherein the coupling, reducer and servo motor are installed in the first cavity.

[0012] Preferably, the size and shape of the central flow channel groove of the valve disc are the same as the flow channel opening opposite the central adjustable flow channel.

[0013] Preferably, the area of ​​the unidirectional flow channel groove of the valve disc is larger than the area of ​​the unidirectional flow channel opening opposite it.

[0014] Preferably, the unidirectional flow channel is L-shaped.

[0015] The effective technical effect of this utility model is that, while ensuring that the firepower and mobility of armored vehicles remain unchanged, it achieves effective adjustment of the hydraulic resistance of the recoil fluid through firing feedforward control, thereby significantly reducing the recoil of the gun and providing an effective technical means to further improve the firepower and mobility of armored vehicles. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the principle structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the valve disc structure of this utility model;

[0018] Figure 3 This is a schematic diagram of a specific embodiment of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Servo motor; 2. Front end cover; 3. Reducer; 4. Coupling; 5. First buffer; 6. Valve disc; 6. Central flow channel groove; 61. One-way flow channel groove; 62. Piston; 7. Piston rod; 8. Core rod; 9. Second buffer; 10. Front end cover; 11. Cylinder; 12. Slip ring; 13. Second cavity; 14. First cavity; 15. Cylinder wall groove; 16. One-way flow channel; 71. One-way flow channel opening; 72. Central adjustable flow channel; 73. Detailed Implementation

[0020] See Figure 1 This utility model discloses an adjustable liquid-cooled recoil mechanism for artillery, comprising a cylinder 12; a movable piston 7 installed inside the cylinder 12; a first cavity 15 located on one side of the piston 7; a second cavity 14 located on the other side of the piston; a piston rod 8 installed in the second cavity 14 and fixedly connected to the piston 7; an axially extending central adjustable flow channel 73 through the piston 7; a one-way flow channel 71 provided on the piston 7, having a one-way flow port 72 communicating with the second cavity 14; and a piston rod 8 installed in the first cavity 15 and abutting against the piston 7. The valve disc 6 has a central flow channel groove 61 that can open or close the central adjustable flow channel 73, and a unidirectional flow channel groove 62 that can dock with the unidirectional flow channel 71; a core rod 9 fixedly connected to the valve disc 6 and driven to rotate by a servo motor 1, used to change the position of the central flow channel groove 61 relative to the central adjustable flow channel 73 by rotation; and a slip ring 13 disposed between the inner wall of the cylinder 12 and the side wall of the piston 7, which can slide relative to the piston, used to open or close the unidirectional flow channel port 72 of the unidirectional flow channel 71.

[0021] like Figure 1As shown, the one-way flow channel 71, also known as the center adjustable flow channel, is L-shaped. The one-way flow channel opening 72 of the one-way flow channel 71 faces the inner wall of the cylinder 12 and connects to the second cavity 14 through the gap between the inner wall of the cylinder 12 and the side of the piston 7. The slip ring 13 is fixed on the inner wall of the cylinder and can open (move away from) the one-way flow channel opening 72 or close (cover) the one-way flow channel opening 72 when the piston 7 moves.

[0022] Figure 1 The image shows the position of the slip ring 13 when the piston 7 moves from right to left. At this time, the flow port 72 of the one-way flow channel 71 is open, allowing the liquid in the first chamber 15 to flow into the second chamber 14. When the piston 7 moves from left to right, the slip ring 13 closes the one-way flow port 72 of the piston's one-way flow channel 71, preventing the liquid in the first chamber 15 from flowing into the second chamber 14.

[0023] The central adjustable flow channel 73 is a liquid flow channel that runs axially through the piston 7 and is used to regulate the flow of liquid from the first chamber 15 into or out of the second chamber 14.

[0024] One end of the core rod 9 passes through the piston 7 and extends into the piston rod 8, and can rotate relative to the piston rod 8. The other end of the core rod 9 is connected to the reducer 3 of the servo motor 1 via the coupling 4.

[0025] Furthermore, this invention can also provide a first buffer 5 in the first cavity 15 and a second buffer 10 in the second cavity 14. Figure 1 In the diagram, the first buffer 5 is located near the coupling 4, and the second buffer 10 is located near the front cover 11. Both the first buffer 5 and the second buffer 10 are conventional spring buffers, so their descriptions are omitted.

[0026] Figure 2 The structure of valve disc 6 is shown. The size and shape of the central flow channel groove 61 of valve disc 6 are the same as the flow channel opening opposite the central adjustable flow channel 73. When valve disc 6 is rotated under the drive of core rod 9, the position of central flow channel groove 61 changes accordingly, thereby fully opening the central adjustable flow channel 73, partially opening the central adjustable flow channel 73, and finally completely closing the central adjustable flow channel 73.

[0027] The area of ​​the one-way flow channel groove 62 of the valve disc 6 is larger than the area of ​​the flow channel opening of the one-way flow channel 71 opposite to it, so that the one-way flow channel 71 is always connected to the first cavity 15 through the one-way flow channel groove 62.

[0028] like Figure 2 As shown, the core rod 9 is a splined shaft that is fixedly connected to the piston 7 and driven by the servo motor 1.

[0029] Figure 3This illustration shows a specific embodiment of the present invention, which includes a servo motor 1, a front cover 2, a reducer 3, a coupling 4, a first buffer 5, a valve disc 6, a piston 7, a piston rod 8, a core rod 9, a second buffer 10, and a front cover 11 disposed in the cylinder 12.

[0030] The feature of this invention is that the piston 7 has a central adjustable flow channel, and a valve disc 6 is provided at the piston end, which can rotate relative to the piston 7, and its flow port area is the same as that of the piston body. A slip ring 13 is fitted on the outside of the piston, which can slide relative to the piston body. It is used to open the central adjustable flow channel 71 during forward stroke to reduce forward stroke resistance; and to close the central adjustable flow channel during backward stroke to ensure the normal operation of the recoil mechanism.

[0031] Specifically, the valve disc 6 has a semi-circular flow port. The valve disc 6 is constrained by the keyway shaft of the core rod 9. The keyway shaft opens and closes the valve disc 6 under the drive of the servo motor, and controls the central adjustable flow channel 73. The overlapping part of the two semi-circular flow ports is the cross-sectional area of ​​the central adjustable flow channel port.

[0032] The present invention is further characterized in that the core rod 9 is inserted inside the piston rod 8, and the core rod 9 has a guide groove for fixed connection of the valve disc 6. The valve disc 6 slides through the guide groove of the core rod 9, thereby rotating the valve disc 6 and adjusting the area of ​​the liquid flowing through the adjustable flow channel 73 at the center of the piston, thereby realizing the adjustment of the size of the central flow port.

[0033] Specifically, the one-way flow port 72 is a large liquid flow port controlled by the slip ring 13 on the piston. The slip ring 13 and the piston form a one-way valve. During the forward and recoil processes, the one-way valve is opened by the force in the rod direction, and the one-way flow port 72 is opened, which greatly reduces the hydraulic resistance when the rod retracts inward and increases the forward speed. During the recoil process, the one-way valve is pressurized, and the one-way flow port 72 is closed, and the recoil mechanism generates a large braking resistance.

[0034] Although the present invention has been described in detail above, it is not limited thereto. Those skilled in the art can make various modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. An adjustable liquid retraction mechanism for artillery, comprising a cylinder (12), a movable piston (7) installed inside the cylinder (12); a first cavity (15) located on one side of the piston (7); a second cavity (14) located on the other side of the piston, and a piston rod (8) installed inside the second cavity (14) and fixedly connected to the piston (7); characterized in that Also includes: An adjustable flow channel (73) axially extends through the center of the piston (7); A valve disc (6) is installed in the first cavity (15) and abuts against the piston (7), the valve disc (6) having a central flow channel groove (61) that can open or close the central adjustable flow channel (73). A core rod (9) is fixedly connected to the valve disc (6) and driven to rotate by a servo motor (1) for changing the position of the central flow channel groove (61) relative to the central adjustable flow channel (73) by rotation.

2. The adjustable hydraulic retraction mechanism for artillery according to claim 1, characterized in that, Also includes: A one-way flow channel (71) is provided on the piston (7), having a one-way flow channel port (72) that connects to the second cavity (14). A slip ring (13) disposed between the inner wall of the cylinder (12) and the side wall of the piston (7) and can slide relative to the piston, is used to open or close the one-way flow port (72) of the one-way flow channel (71). The valve disc (6) also has a one-way flow channel groove (62) that can dock with the one-way flow channel (71).

3. The adjustable hydraulic retraction mechanism for artillery according to claim 2, characterized in that, The one-way flow channel (71) has its one-way flow channel opening (72) facing the inner wall of the cylinder (12) and connecting to the second cavity (14) through the gap between the inner wall of the cylinder (12) and the side of the piston (7).

4. The adjustable hydraulic retraction mechanism for artillery according to claim 2, characterized in that, The slip ring (13) is fixed on the inner wall of the cylinder.

5. The adjustable hydraulic retraction mechanism for artillery according to claim 2, characterized in that, One end of the core rod (9) passes through the piston (7) and extends into the piston rod (8), and can rotate relative to the piston rod (8).

6. The adjustable hydraulic retraction mechanism for artillery according to claim 5, characterized in that, The other end of the core rod (9) is connected to the reducer (3) of the servo motor (1) via a coupling (4).

7. The adjustable hydraulic retraction mechanism for artillery according to claim 6, characterized in that, The coupling (4), reducer (3) and servo motor (1) are installed in the first cavity (15).

8. The adjustable retraction liquid retraction mechanism for artillery according to claim 2, characterized in that, The size and shape of the central flow channel groove (61) of the valve disc (6) are the same as the flow channel opening opposite the central adjustable flow channel (73).

9. The adjustable hydraulic retraction mechanism for artillery according to claim 2, characterized in that, The area of ​​the unidirectional flow channel groove (62) of the valve disc (6) is larger than the area of ​​the flow channel opening of the opposite unidirectional flow channel (71).

10. The adjustable retraction liquid retraction mechanism for artillery according to claim 2, characterized in that, The unidirectional flow channel (71) is L-shaped.

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