Device connected with gun barrel of 30-mm aircraft gun

Abstract

The utility model discloses a device connected with a 30mm aircraft gun barrel, and relates to the technical field of connecting devices. Comprising a target plate and an adapter, a shaft rod is fixed to one end of the adapter, the outer wall of the shaft rod is slidably connected with an expansion-withdrawing jacking pipe and a double-end expansion pipe, the expansion-withdrawing jacking pipe is located at the end close to the adapter, a sliding rod is fixed to the outer wall of the shaft rod, a sliding opening is formed in the outer wall of the expansion-withdrawing jacking pipe, and the sliding rod is slidably connected into the sliding opening. According to the utility model, the axis of the gun barrel can be converted into a target plate plane normal vector through the 30mm shaft inserting device, and whether the mounting position of the gun barrel is correct or not can be simply and quickly verified by analyzing the target plate plane normal vector. During installation, firstly, the adapter is held by a hand, and the unexpanded double-end expansion tube is slowly inserted into the 30mm gun barrel until the double-end expansion tube is completely inserted. And then, the retreating and expanding jacking pipe is rotated in the direction close to the adapter, so that the retreating and expanding jacking pipe is close to the adapter, and it is ensured that the retreating and expanding jacking pipe is completely separated from the double-end expanding pipe. Then, the adapter is pushed towards the muzzle with force in the axial direction.

Description

Technical Field

[0001] This utility model relates to the field of connecting device technology, specifically a device for connecting to a 30mm aircraft cannon barrel. Background Technology

[0002] In the process of measuring the barrel axis of a 30mm aircraft cannon, the traditional method involves using a dedicated sight and target plate. The sight is a tool designed to match the cannon barrel, ensuring precise insertion. The target plate is placed 5-10 meters in front of the cannon, with the distance fine-tuned according to the actual situation to ensure accurate measurement. The dedicated sight is then inserted into the cannon barrel. This operation ensures that the sight is aligned with the barrel axis, providing a precise reference for subsequent measurements. The target plate is moved until its center completely coincides with the frontispiece of the cannon sight. This adjustment ensures that the frontispiece is aligned with the center of the target plate, maintaining a consistent measurement reference. A steel wire is tied between the cannon muzzle and the center of the target plate and pulled taut. By observing the alignment of the steel wire with the frontispiece, it is inferred whether the cannon barrel axis coincides with the steel wire.

[0003] The above operation has the following problems: (1) human eye observation has errors; (2) the placement of the calibration plate is too complicated and the accuracy cannot be guaranteed; (3) it is easily affected by the environment. Therefore, this patent proposes a device that connects to the 30mm cannon barrel to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for connecting to a 30mm cannon barrel, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for connecting to a 30mm cannon barrel, comprising a target plate and an adapter. One end of the adapter is fixed with a shaft. The outer wall of the shaft is slidably connected with a shrinkage jack and a double-ended expansion tube. The shrinkage jack is located at the end near the adapter. A sliding rod is fixed to the outer wall of the shaft. A sliding opening is provided on the outer wall of the shrinkage jack. The sliding rod is slidably connected in the sliding opening. A retaining ring is screwed to the end of the shaft away from the adapter.

[0006] Preferably, the shaft includes a first rod body and a second rod body. The first rod body is a cylinder, the second rod body is a frustum, the expansion tube is slidably connected to the outer wall of the first rod body, the double-ended expansion tube is slidably connected to the outer wall of the second rod body, and the slide rod is fixed to the outer wall of the first rod body.

[0007] Preferably, a fixing rod is fixed to the bottom end of the target plate, a fixing plate is fixed to the bottom end of the fixing rod, and a mounting plate is fixed to the top end of the adapter. The fixing plate and the mounting plate are connected by a first screw and a round pin.

[0008] Preferably, the adapter and the first rod are connected by a second screw.

[0009] Preferably, the first screw is an M8x20 cylindrical shoulder screw, the round pin is a Φ6x20 cylindrical pin, and the second screw is an M3x10 countersunk screw.

[0010] Preferably, the outer wall of the expansion jack is provided with anti-slip grooves.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The 30mm insert device converts the barrel axis into a target plane normal vector. Analyzing this target plane normal vector allows for quick and easy verification of the barrel's correct installation position. During installation, first, hold the adapter and slowly insert the unexpanded double-ended expansion tube into the 30mm barrel until fully inserted. Then, rotate the expansion-reducing jack towards the adapter, ensuring it is completely disengaged from the double-ended expansion tube. Next, push the adapter axially towards the muzzle, causing the first and second rods to move towards the muzzle. The second rod expands the double-ended expansion tube until its outer wall fully engages with the barrel's inner wall, indicating it is in its expanded state. For disassembly, hold the lower part of the adapter with your left hand and the rear of the expansion-reducing jack with your right hand, rotating it away from the adapter. During rotation, the expansion-reducing jack pushes against the double-ended expansion tube, moving it backward. This moves the double-ended expansion tube to its initial position on the second rod, returning it to its unexpanded state. At this point, the device can be easily removed from the barrel with both hands. The device does not require disassembly and is plug-and-play. It can bring out the axis of various tubes and effectively ensure the stability and coaxiality of the connection. It avoids the problems of human visual observation errors, cumbersome placement of calibration plates, inability to guarantee accuracy, and susceptibility to environmental influences. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3 This is a schematic diagram of the mounting plate structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the adapter structure of this utility model;

[0017] Figure 5 This is a schematic diagram of the shaft structure of this utility model.

[0018] In the diagram: 1. Target plate; 2. Adapter; 3. Shaft; 301. First rod; 302. Second rod; 4. Expansion tube; 5. Sliding port; 6. Sliding rod; 7. Double-ended expansion tube; 8. Retaining ring; 9. First screw; 10. Round pin; 11. Second screw; 12. Fixing rod; 13. Fixing plate; 14. Mounting plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the process of measuring the axis of a 30mm cannon barrel, the traditional method involves using a dedicated sight and target plate 1. The sight is a tool designed to match the cannon barrel, ensuring precise insertion into the barrel. Target plate 1 needs to be placed 5-10 meters in front of the cannon, with the distance fine-tuned according to the actual situation to ensure accurate measurement. The dedicated sight is then inserted into the cannon barrel. This operation ensures that the sight is aligned with the barrel axis, providing a precise reference for subsequent measurements. The position of target plate 1 is then moved until its center is completely aligned with the frontispiece of the cannon sight. The purpose of this adjustment is to ensure that the sight is aligned with the center of the target plate 1, maintaining a consistent measurement reference. A steel wire is tied between the cannon muzzle and the center of the target plate 1, and the wire is straightened to ensure it remains taut. By observing the alignment of the wire with the sight's frontispiece, it can be inferred whether the cannon barrel axis coincides with the wire. This invention provides a device for connecting to a 30mm cannon barrel. Through a 30mm insert shaft device, the barrel axis can be converted into a target plate plane normal vector. By analyzing the target plate plane normal vector, the correctness of the barrel installation position can be easily and quickly verified. During installation, first, hold the adapter 2 and slowly insert the unexpanded double-ended expansion tube 7 into the 30mm barrel until it is fully inserted. Then, rotate the expansion retraction tube 4 towards the adapter 2, bringing it closer to the adapter 2, ensuring that the expansion retraction tube 4 is completely disengaged from the double-ended expansion tube 7. Next, push the adapter 2 axially toward the muzzle, causing the first rod 301 and the second rod 302 to move toward the muzzle. The second rod 302 drives the double-ended expansion tube 7 to expand until the outer wall of the double-ended expansion tube 7 is fully engaged with the inner wall of the barrel, and the double-ended expansion tube 7 enters the expanded state. For disassembly, hold the lower part of the adapter 2 with your left hand and the rear part of the de-expansion jack 4 with your right hand, and rotate it forcefully away from the adapter 2. During rotation, the de-expansion jack 4 pushes against the double-ended expansion tube 7 and moves it backward, thus moving the double-ended expansion tube 7 to its initial position on the second rod 302, causing it to return to its unexpanded state. At this point, the device can be easily removed from the barrel with both hands. The advantages of this connecting device are: 1. The device does not require disassembly and is plug-and-play; 2. The device effectively ensures the stability and coaxiality of the connection; 3. As a connecting device, it can lead out the axis of various tubes.

[0021] like Figures 1-5As shown, this utility model provides a technical solution: a device for connecting to a 30mm aircraft cannon barrel, including a target plate 1 and an adapter 2. One end of the adapter 2 is fixed with a shaft 3. The outer wall of the shaft 3 is slidably connected to a shrinkage jack 4 and a double-ended expansion tube 7. The shrinkage jack 4 is located at the end closest to the adapter 2. A sliding rod 6 is fixed to the outer wall of the shaft 3. A sliding opening 5 is provided on the outer wall of the shrinkage jack 4, and the sliding rod 6 is slidably connected within the sliding opening 5. A retaining ring 8 is screwed to the end of the shaft 3 away from the adapter 2. The shaft 3 includes a first rod body 301 and a second rod body 302. The first rod body 301 is a cylinder, and the second rod body 302 is a frustum. The shrinkage jack 4 is slidably connected to the outer wall of the first rod body 301, and the double-ended expansion tube 7 is slidably connected to the outer wall of the second rod body 302. The sliding rod 6 is fixed to the outer wall of the first rod body 301.

[0022] It is important to note that the 30mm insertion shaft device can convert the barrel axis into the target plate plane normal vector. By analyzing the target plate plane normal vector, the correctness of the barrel installation position can be easily and quickly verified. During installation, first hold the adapter 2 and slowly insert the unexpanded double-ended expansion tube 7 into the 30mm barrel until it is fully inserted. Then, rotate the expansion retractor 4 towards the adapter 2, bringing it closer to the adapter 2 and ensuring that the expansion retractor 4 is completely disengaged from the double-ended expansion tube 7. Next, push the adapter 2 axially towards the muzzle, causing the first rod 301 and the second rod 302 to move towards the muzzle. The second rod 302 drives the double-ended expansion tube 7 to expand until the outer wall of the double-ended expansion tube 7 is fully engaged with the inner wall of the barrel, and the double-ended expansion tube 7 enters the expanded state. During disassembly, hold the lower part of the adapter 2 with your left hand and the rear part of the expansion retractor 4 with your right hand, and rotate it forcefully away from the adapter 2. During rotation, the expansion-reducing tube 4 presses against the double-ended expansion tube 7 and moves it backward, thus moving the double-ended expansion tube 7 to its initial position on the second rod 302, causing it to return to its unexpanded state. At this point, the device can be easily removed from the gun barrel by hand. The double-ended expansion tube 7 and the expansion-reducing tube 4 are fitted onto the shaft 3, and the retaining ring 8 is screwed onto the shaft 3 to prevent the double-ended expansion tube 7 and the expansion-reducing tube 4 from falling off. When the double-ended expansion tube 7 is in the expanded state, it forms an interference fit with the gun barrel, ensuring a tight connection between the double-ended expansion tube 7 and the gun barrel without gaps and guaranteeing coaxiality.

[0023] like Figure 1 , Figure 3 and Figure 4 As shown, a fixing rod 12 is fixed to the bottom end of the target plate 1, and a fixing plate 13 is fixed to the bottom end of the fixing rod 12. A mounting plate 14 is fixed to the top end of the adapter 2. The fixing plate 13 and the mounting plate 14 are connected by a first screw 9 and a round pin 10. The adapter 2 and the first rod body 301 are connected by a second screw 11. The first screw 9 is an M8x20 cylindrical shoulder screw, the round pin 10 is a Φ6x20 cylindrical pin, and the second screw 11 is an M3x10 countersunk screw. Anti-slip grooves are provided on the outer wall of the expansion jacking tube 4.

[0024] It should be noted that the fixing plate 13 at the bottom of the target plate 1 and the mounting plate 14 at the top of the adapter 2 are connected by the first screw 9 and the round pin 10. The first screw 9 is an M8x20 cylindrical shoulder screw and the round pin 10 is a Φ6x20 cylindrical pin, forming a two-pin and two-prong connection structure. This can provide good structural force and ensure the coaxiality of the target plate 1 and the adapter in the Z-axis direction. This will convert the normal vector of the upper plane of the adapter 2 into the normal vector of the target plate plane. The adapter 2 and the first rod 301 are fixed by an M3x10 countersunk screw. The countersunk screw is installed in the corresponding threaded hole with thread glue to provide good force and convert the axis of the insert shaft into the normal vector of the upper surface of the adapter 2.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A device for connection with a 30 mm naval gun barrel, comprising a target plate (1) and an adapter (2), characterized in that: One end of the adapter (2) is fixed with a shaft (3). The outer wall of the shaft (3) is slidably connected with a shrinkage jack (4) and a double-ended expansion tube (7). The shrinkage jack (4) is located at the end close to the adapter (2). The outer wall of the shaft (3) is fixed with a slide rod (6). The outer wall of the shrinkage jack (4) is provided with a sliding opening (5). The slide rod (6) is slidably connected in the sliding opening (5). The end of the shaft (3) away from the adapter (2) is screwed with a retaining ring (8).

2. A device for connecting to a 30 mm aircraft cannon barrel according to claim 1, characterized in that: The shaft (3) includes a first rod body (301) and a second rod body (302). The first rod body (301) is a cylinder, and the second rod body (302) is a frustum. The expansion tube (4) is slidably connected to the outer wall of the first rod body (301), the double-ended expansion tube (7) is slidably connected to the outer wall of the second rod body (302), and the slide rod (6) is fixed to the outer wall of the first rod body (301).

3. The device for connecting to a 30mm aircraft cannon barrel according to claim 1, characterized in that: The bottom end of the target plate (1) is fixed with a fixing rod (12), the bottom end of the fixing rod (12) is fixed with a fixing plate (13), the top end of the adapter (2) is fixed with a mounting plate (14), and the fixing plate (13) and the mounting plate (14) are connected by a first screw (9) and a round pin (10).

4. The device for connecting to a 30mm aircraft cannon barrel according to claim 1, characterized in that: The adapter (2) and the first rod (301) are connected by a second screw (11).

5. The device for connecting to a 30mm aircraft cannon barrel according to claim 3, characterized in that: The first screw (9) is an M8x20 cylindrical shoulder screw, the round pin (10) is a Φ6x20 cylindrical pin, and the second screw (11) is an M3x10 countersunk screw.

6. The device for connecting to a 30mm aircraft cannon barrel according to claim 1, characterized in that: The outer wall of the expansion jacking pipe (4) is provided with anti-slip grooves.

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