Ejection cylinder structure

Abstract

This application discloses an ejection cylinder structure, comprising: a cylinder body, with a first retaining ring at one end of the cylinder body opening, a through hole in the side wall of the cylinder body, and a locking mechanism extending through the through hole and into the cylinder body; a guide plate, covering the opening at the other end of the cylinder body, with multiple first guide holes on the guide plate; a secondary cylinder, embedded in the cylinder body and sliding between the guide plate and the first retaining ring, with a baffle plate at one end facing the guide plate, and multiple second guide holes offset from the first guide holes on the baffle plate; and a launch tube, sleeved on the side of the cylinder body with the first retaining ring; wherein the baffle plate is close to the guide plate, or the baffle plate is in contact with the guide plate, so that the high-pressure gas acts on the baffle plate first. This application utilizes the fact that the gas can act more evenly on the surface of the sonar buoy, avoiding excessive local stress on the sonar buoy, and effectively solving the problem of short stroke in traditional ejection cylinders.

Description

Technical Field

[0001] This application relates to the field of pneumatic catapult technology, and in particular to a catapult cylinder structure. Background Technology

[0002] A sonar buoy is a buoy-type sonar device used to detect underwater targets. It is a type of underwater acoustic remote sensing detector. Together with buoy signal receiving and processing equipment, it forms a buoy sonar system, which is used for airborne anti-submarine detection and for early warning of underwater submarines by fixed sonar surveillance systems.

[0003] Currently, sonar buoys typically use cylinder deployment, where gas pushes a push rod inside the cylinder, which in turn propels the deployed object to accelerate it. However, due to the limitations of the cylinder's structure, when using a push rod to propel the sonar buoy, the push rod's stroke is short, and the effective area is small. Furthermore, because of the specific purpose of sonar buoys—they are large and lightweight—using cylinder deployment would inevitably cause excessive localized stress, making them prone to damage.

[0004] Therefore, in view of the above-mentioned technical problems, how to increase the ejection stroke and avoid excessive local force on the object being pushed is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of this application is to provide an ejection cylinder structure that uses the gas impact during the gas release process to directly act on the surface of the sonar buoy, thereby accelerating the sonar buoy and solving the problems of short stroke and excessive local force on the object being pushed by traditional ejection cylinders.

[0006] To achieve the above objectives, this application provides a catapult cylinder structure, comprising:

[0007] The cylinder body is hollow inside. A first retaining ring extending towards the center is provided at the opening at one end of the cylinder body. A through hole for engaging the sonar buoy locking mechanism is provided on the side wall of the cylinder body. The locking mechanism passes through the through hole and extends into the cylinder body.

[0008] An air guide plate covers the opening at the other end of the cylinder body. The air guide plate has multiple first air guide holes, and the multiple first air guide holes are connected to a high-pressure air source.

[0009] A secondary cylinder is embedded in the cylinder body and slides between the air guide plate and the first baffle ring. The secondary cylinder is hollow inside and has an air baffle plate at one end facing the air guide plate. The air baffle plate has a plurality of second air guide holes that are staggered with the first air guide hole. The outer wall of the secondary cylinder is provided with a protruding ring that cooperates with the inner wall of the cylinder. The protruding ring slides against the inner wall of the cylinder.

[0010] A launch tube is fitted onto the side of the cylinder body with the first retaining ring. The launch tube contains a sonar buoy, which is ejected by high-pressure gas inside the cylinder body.

[0011] The baffle plate is close to the air guide plate, or the baffle plate is in contact with the air guide plate, so that the high-pressure gas first acts on the baffle plate and pushes the secondary cylinder to slide. During the sliding process, the protruding ring presses the locking mechanism to disengage from the through hole.

[0012] Preferably, the system further includes a primary cylinder embedded in the cylinder body, the outer wall of the primary cylinder slidingly abutting against the inner ring of the first retaining ring, a first limiting ring extending outwardly is provided along the upper edge of the outer wall of the primary cylinder, the outer ring of the first limiting ring slidingly abutting against the inner wall of the secondary cylinder, and a second limiting ring is provided at the end of the secondary cylinder away from the baffle plate, the inner ring of the second limiting ring slidingly abutting against the side wall of the primary cylinder, and the outer ring of the second limiting ring slidingly abutting against the inner wall of the cylinder body.

[0013] Preferably, the second limiting ring slides between the first stop ring and the first limiting ring.

[0014] Preferably, during the sliding process of the high-pressure gas pushing the secondary cylinder, the locking mechanism is first pressed to disengage from the through hole, and then the sonar buoy is provided with air pressure to disengage from the launch tube.

[0015] Preferably, the first-stage cylinder is provided with an inwardly extending second retaining ring at one end away from the first limiting ring. Multiple compression springs are evenly distributed on the second retaining ring, and the other end of the compression spring abuts against the air baffle plate to provide elastic force to keep the first-stage cylinder and the second-stage cylinder away from each other.

[0016] Preferably, the side of the first-stage cylinder with the second retaining ring contacts the sonar buoy and presses the sonar buoy tightly into the launch tube.

[0017] Preferably, the cylinder body has a hollow cylindrical structure inside, and the first-stage cylinder and the second-stage cylinder have a hollow cylindrical structure inside.

[0018] Preferably, high-pressure gas enters between the air guide plate and the baffle plate through the first air guide hole, and enters between the secondary cylinder and the primary cylinder through the second air guide hole to act on the sonar buoy.

[0019] Preferably, the air guide plate is sealed and pressed onto the cylinder body by the cylinder head, and the cylinder head is provided with an air inlet that communicates with a plurality of the air guide holes, the air inlet being connected to the high-pressure air source through a solenoid valve.

[0020] Preferably, the sonar buoy is fixed in the launch tube by the locking mechanism, and the sonar buoy is unlocked after the locking mechanism disengages from the through hole.

[0021] Compared to the aforementioned background technology, this application utilizes the staggered distribution of the first and second air guide holes to ensure that when high-pressure gas enters the first air guide hole, it first acts on the baffle plate, thereby preferentially driving the secondary cylinder. During the action of the secondary cylinder, the locking mechanism is forced out of the through hole, thus causing the sonar buoy to disengage. After the sonar buoy disengages, due to the continuous injection of high-pressure gas, the gas pressure inside the cylinder gradually increases, and the sonar buoy is ejected from the launch tube under the thrust of the gas. By using gas to propel the sonar buoy, the gas can act more evenly on the surface of the sonar buoy, avoiding excessive local stress. At the same time, using gas ejection instead of traditional push rod ejection effectively solves the problem of short stroke of traditional ejection cylinders.

[0022] Specifically, the device includes a cylinder body, an air guide plate, a secondary cylinder, and a launch tube. The cylinder body is hollow inside, and a first retaining ring extending towards the center is provided at the opening at one end of the cylinder body. The side wall of the cylinder body has a through hole for engaging the sonar buoy locking mechanism, and the locking mechanism passes through the through hole and extends into the cylinder body. The air guide plate covers the opening at the other end of the cylinder body and has multiple first air guide holes, which are connected to a high-pressure gas source to provide high-pressure gas. The secondary cylinder is embedded in the cylinder body and slides between the air guide plate and the first retaining ring. The secondary cylinder is hollow inside, and an air baffle plate is provided at one end facing the air guide plate. The air baffle plate has multiple second air guide holes that are staggered with the first air guide holes. The outer wall of the secondary cylinder has a protruding ring that cooperates with the inner wall of the cylinder body. The protruding ring slides against the inner wall of the cylinder body. During the sliding process, the protruding ring has a position that presses the locking mechanism to disengage from the through hole, thereby unlocking the sonar buoy. The launch tube is fitted onto the side of the cylinder body with the first retaining ring. A sonar buoy is built into the launch tube and is ejected by high-pressure gas within the cylinder body. It should be noted that the baffle plate needs to be positioned close to the air guide plate, or the baffle plate should be flush with the air guide plate, to ensure that the high-pressure gas acts on the baffle plate first, thereby pushing the secondary cylinder to slide. During this sliding process, the raised ring presses the locking mechanism out of the through hole. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1This is a schematic cross-sectional view of the ejection cylinder structure provided in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the cylinder block provided in the embodiments of this application;

[0026] Figure 3 This is a three-dimensional structural diagram of the two-stage cylinder provided in an embodiment of this application;

[0027] Figure 4 This is a three-dimensional schematic diagram of the first-stage cylinder provided in an embodiment of this application;

[0028] Figure 5 This is a schematic diagram of the misaligned distribution structure of the first and second air guide holes provided in the embodiments of this application.

[0029] In the diagram: 1. Solenoid valve; 2. Cylinder head; 3. Air guide plate; 31. First air guide hole; 4. Cylinder body; 41. Through hole; 42. First retaining ring; 5. Second stage cylinder; 51. Air baffle plate; 52. Second air guide hole; 53. Second limiting ring; 54. Protruding ring; 6. First stage cylinder; 61. First limiting ring; 62. Second retaining ring; 7. Compression spring; 8. Launch tube. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper," "lower," "front," and "rear" is based on the orientation or positional relationship shown in the accompanying drawings. It is used only for the convenience of describing this application and for simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application. Furthermore, "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1 As shown, in this embodiment, a catapult cylinder structure is provided, which includes a cylinder body 4, a guide plate 3, a secondary cylinder 5, and a launch tube 8; please refer to... Figure 2The cylinder body 4 is a hollow structure with openings at both ends. A first retaining ring 42 extending towards the center is provided at the opening at one end of the cylinder body 4. Of course, the middle part of the first retaining ring 42 is also hollow, so it does not affect the high-pressure gas inside the cylinder body 4 from acting on the sonar buoy.

[0034] Please refer to Figure 2 The cylinder body 4 has a through hole 41 on its side wall for engaging the sonar buoy locking mechanism. It should be noted that the locking mechanism can be a conventional locking mechanism, where the sonar buoy typically uses a rotating locking block to lock into the through hole 41. When the locking mechanism penetrates the through hole 41 and extends into the cylinder body 4, it locks the sonar buoy. When the locking mechanism disengages from the through hole 41, the sonar buoy's cover plate automatically opens, thus providing the necessary conditions for the sonar buoy's ejection. The specific structure of the locking mechanism will not be detailed here; please refer to existing technologies.

[0035] Please refer to Figure 1 The air guide plate 3 matches the opening at the other end of the cylinder 4 and covers the opening, so that high-pressure gas enters the cylinder 4 only through the first air guide hole 31 on the air guide plate 3. There are multiple first air guides, which can be evenly distributed on the air guide plate 3, or they can be unevenly distributed on the air guide plate 3. There are no restrictions here. The multiple first air guide holes 31 can be connected to an external high-pressure gas source to provide power for the launch of the sonar buoy.

[0036] The secondary cylinder 5 is embedded in the cylinder body 4 and slides between the air guide plate 3 and the first retaining ring 42; please refer to... Figure 3 The secondary cylinder 5 is hollow inside, with a baffle plate 51 on one side and an opening on the other side. The air guide plate 3 is configured with one side of the baffle plate 51 as the air guide plate 3, i.e. Figure 1 The air baffle 51 has multiple second air guide holes 52 that are staggered from the first air guide hole 31. Please refer to [the relevant documentation]. Figure 5 Because the first air guide hole 31 and the second air guide hole 52 are misaligned, when high-pressure gas enters the cylinder 4 through the first air guide hole 31, the pressure will first act on the baffle plate 51, thereby pushing the baffle plate 51 to move first.

[0037] The outer wall of the secondary cylinder 5 is provided with a protruding ring 54 that cooperates with the inner wall of the cylinder body 4. The protruding ring 54 can slide against the inner wall of the cylinder body 4, thereby ensuring the stability of the secondary cylinder 5 sliding within the cylinder body 4.

[0038] Meanwhile, the launching tube 8 is fitted onto the side of the cylinder 4 with the first retaining ring 42. Please refer to [reference needed]. Figure 1A sonar buoy is built into the launch tube 8 and is ejected using high-pressure gas within the cylinder 4. It should be noted that, to ensure the baffle plate 51 receives sufficiently high-pressure gas, it needs to be positioned close to or in contact with the air guide plate 3. This allows the high-pressure gas to act first on the baffle plate 51, pushing the secondary cylinder 5 to slide. During the sliding of the secondary cylinder 5, the protruding ring 54 can press the locking mechanism to disengage from the through hole 41. Furthermore, this disengagement of the locking mechanism from the through hole 41 must occur before the sonar buoy is ejected, ensuring unlocking before ejection and preventing structural damage caused by ejection occurring before unlocking.

[0039] In summary, this application utilizes the staggered distribution of the first air guide hole 31 and the second air guide hole 52 to ensure that when high-pressure gas enters the first air guide hole 31, it first acts on the baffle plate 51, thereby preferentially driving the secondary cylinder 5 to actuate. During the actuation of the secondary cylinder 5, the locking mechanism is forced out of the through hole 41, thus causing the sonar buoy to disengage. After the sonar buoy disengages, due to the continuous injection of high-pressure gas, the gas pressure inside the cylinder 4 gradually increases, and the sonar buoy is ejected from the launch tube 8 under the thrust of the gas. By using gas to propel the sonar buoy, the gas can act more evenly on the surface of the sonar buoy, avoiding excessive local stress on the sonar buoy. At the same time, using gas ejection instead of traditional push rod ejection effectively solves the problem of short stroke of traditional ejection cylinders.

[0040] In addition, this application also includes a first-stage cylinder 6 embedded in the cylinder block 4, please refer to Figure 1 and Figure 4 The outer wall of the first-stage cylinder 6 slides against the inner ring of the first retaining ring 42. A first limiting ring 61 extending outward is provided on the upper edge of the outer wall of the first-stage cylinder 6. The outer ring of the first limiting ring 61 slides against the inner wall of the second-stage cylinder 5. A second limiting ring 53 is provided at the end of the second-stage cylinder 5 away from the baffle plate 51. The inner ring of the second limiting ring 53 slides against the side wall of the first-stage cylinder 6. The outer ring of the second limiting ring 53 slides against the inner wall of the cylinder body 4.

[0041] Based on this, the second limiting ring 53 can slide between the first retaining ring 42 and the first limiting ring 61. Simultaneously, a second retaining ring 62 extending inward is provided at the end of the first-stage cylinder 6 away from the first limiting ring 61. Multiple compression springs 7 are evenly distributed on the second retaining ring 62, with the other end of each spring abutting against the air baffle plate 51, thus providing a spring force to keep the first-stage cylinder 6 and the second-stage cylinder 5 away from each other. In other words, the first-stage cylinder 6 and the second-stage cylinder 5 use a sliding mechanism, and the compression springs 7 between them can adapt to buoy length errors. The second retaining ring 62 on the first-stage cylinder 6 presses the sonar buoy tightly into the launch tube 8. After ejection and the high-pressure air source is stopped, the compression springs 7 can push the second-stage cylinder 5 towards the air guide plate 3, achieving automatic reset of the second-stage cylinder 5 and preparing it for the next ejection.

[0042] In addition, please refer to Figures 2 to 4 The cylinder 4 has a hollow cylindrical structure inside, while the first-stage cylinder 6 and the second-stage cylinder 5 are hollow cylindrical structures inside. The cylindrical structures work together more stably during sliding and can be adapted to existing sonar buoy structures. There are no strict restrictions on the diameter of the cylindrical structures; the selection can be made based on the size of the sonar buoy.

[0043] As can be seen from the above, high-pressure gas enters the space between the air guide plate 3 and the baffle plate 51 through the first air guide hole 31, and pushes the secondary cylinder 5 to move a certain distance. Then, the gas enters the secondary cylinder 5 and the primary cylinder 6 through the second air guide hole 52, thereby acting on the sonar buoy. The buoy is ejected by the thrust of the gas. When loading the sonar buoy, the sonar buoy presses against the primary cylinder 6, and the secondary cylinder 5 automatically resets under the action of the compression spring 7.

[0044] Please refer to Figure 1 The air guide plate 3 is sealed and pressed onto the cylinder body 4 by the cylinder head 2, and the cylinder head 2 is provided with an air intake hole that communicates with multiple air guide holes. The air intake hole is connected to a high-pressure air source through a solenoid valve 1. When the solenoid valve is energized and opened, the high-pressure gas rushes out from the air intake hole of the cylinder head 2, thereby completing the above-mentioned ejection action.

[0045] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0046] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. A recoil cylinder structure characterized by, include: The cylinder body is hollow inside. A first retaining ring extending towards the center is provided at the opening at one end of the cylinder body. A through hole for engaging the sonar buoy locking mechanism is provided on the side wall of the cylinder body. The locking mechanism passes through the through hole and extends into the cylinder body. An air guide plate covers the opening at the other end of the cylinder body. The air guide plate has multiple first air guide holes, and the multiple first air guide holes are connected to a high-pressure air source. A secondary cylinder is embedded in the cylinder body and slides between the air guide plate and the first baffle ring. The secondary cylinder is hollow inside and has an air baffle plate at one end facing the air guide plate. The air baffle plate has a plurality of second air guide holes that are staggered with the first air guide hole. The outer wall of the secondary cylinder is provided with a protruding ring that cooperates with the inner wall of the cylinder. The protruding ring slides against the inner wall of the cylinder. A launch tube is fitted onto the side of the cylinder body with the first retaining ring. The launch tube contains a sonar buoy, which is ejected by high-pressure gas inside the cylinder body. The baffle plate is close to the air guide plate, or the baffle plate is in contact with the air guide plate, so that the high-pressure gas acts on the baffle plate first and pushes the secondary cylinder to slide. During the sliding process, the protruding ring presses the locking mechanism to disengage from the through hole. It also includes a primary cylinder embedded in the cylinder body, the outer wall of the primary cylinder slidingly abutting against the inner ring of the first retaining ring, a first limiting ring extending outwardly is provided on the upper edge of the outer wall of the primary cylinder, the outer ring of the first limiting ring slidingly abutting against the inner wall of the secondary cylinder, and a second limiting ring is provided on the end of the secondary cylinder away from the baffle plate, the inner ring of the second limiting ring slidingly abutting against the side wall of the primary cylinder, and the outer ring of the second limiting ring slidingly abutting against the inner wall of the cylinder body.

2. The recoil cylinder structure of claim 1, wherein The second limiting ring slides between the first stop ring and the first limiting ring.

3. The recoil cylinder structure of claim 1, wherein During the sliding process of the high-pressure gas pushing the secondary cylinder, the locking mechanism is first pressed to disengage from the through hole, and then the sonar buoy is provided with air pressure to disengage from the launch tube.

4. The ejection cylinder structure according to claim 3, characterized in that, The first-stage cylinder is provided with an inwardly extending second retaining ring at one end away from the first limiting ring. Multiple compression springs are evenly distributed on the second retaining ring, and the other end of the compression spring abuts against the air baffle plate to provide elastic force to keep the first-stage cylinder and the second-stage cylinder away from each other.

5. The ejection cylinder structure according to claim 4, characterized in that, The first-stage cylinder has a side with the second retaining ring that contacts the sonar buoy and presses the sonar buoy into the launch tube.

6. The ejection cylinder structure according to any one of claims 1-5, characterized in that, The cylinder body has a hollow cylindrical structure inside, and the first-stage cylinder and the second-stage cylinder have a hollow cylindrical structure inside.

7. The ejection cylinder structure according to claim 6, characterized in that, High-pressure gas enters between the air guide plate and the baffle plate through the first air guide hole, and then enters between the second-stage cylinder and the first-stage cylinder through the second air guide hole to act on the sonar buoy.

8. The ejection cylinder structure according to claim 6, characterized in that, The air guide plate is sealed and pressed onto the cylinder body by the cylinder head, and the cylinder head is provided with an air inlet that communicates with multiple air guide holes. The air inlet is connected to the high-pressure air source through a solenoid valve.

9. The ejection cylinder structure according to claim 6, characterized in that, The sonar buoy is fixed in the launch tube by the locking mechanism. After the locking mechanism disengages from the through hole, the sonar buoy is unlocked.

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