High-reliability coaxial expansion sleeve connecting device guided and positioned by conical surface

Abstract

The invention discloses a high-reliability coaxial expansion sleeve connecting device guided and positioned by a conical surface. The high-reliability coaxial expansion sleeve connecting device comprises an artillery barrel adaptive ring, a limiting sleeve, a main shaft, a conical expansion body, a guide block and a limiting check ring, the expansion sleeve and the positioning ring are fixedly connected to the two ends of the shaft sleeve respectively, the outer wall of the expansion sleeve is divided into a plurality of elastic pieces by strip-shaped notches formed in the axial direction of the expansion sleeve at equal intervals, a conical shaft hole is formed in the shaft sleeve, and the outer wall of the positioning ring is provided with a conical surface; the limiting sleeve is connected with the positioning ring through a bolt; the main shaft is arranged in a containing cavity defined by the artillery barrel adapter ring and the limiting sleeve in a shape following manner, and a through stepped hole is formed in the axis of the main shaft; the conical expansion body is arranged at the front end in the expansion sleeve and is in threaded connection with the part, extending into the expansion sleeve, of the main shaft, a guide block is arranged on the conical expansion body, and the guide block is in sliding connection with the strip-shaped notch; the shaft check ring is clamped at the end, connected with the conical expansion body, of the main shaft to prevent the conical expansion body from falling off from the main shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of artillery calibration, and in particular to a highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning for calibrating an artillery barrel, which is applicable to the rapid and accurate calibration of various artillery without disassembling the recoil brake. Background Art

[0002] During the use and maintenance of artillery, the calibration of the artillery barrel is a key link to ensure the shooting accuracy of the artillery. For traditional artillery calibration methods, when connecting calibration equipment, if the recoil brake is not removed, it is difficult for the calibration equipment to be effectively connected to the artillery barrel and ensure coaxiality, resulting in poor calibration accuracy. Removing the recoil brake not only involves cumbersome operations, requires professional tools and technicians, consumes a large amount of time and manpower, but also may cause damage to the recoil brake and the connection part of the artillery barrel due to repeated disassembly, affecting the performance and service life of the artillery. Especially in field operations or emergency tasks, this traditional calibration method severely restricts the rapid response ability of the artillery.

[0003] Therefore, developing a device that can achieve accurate calibration without disassembling the recoil brake has important military significance and practical application value. Summary of the Invention

[0004] The purpose of the present invention is to provide a highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning, which can achieve accurate calibration of the artillery barrel without disassembling the recoil brake; compared with traditional calibration methods, it takes less time and can improve the rapid response ability of the artillery in the field, having important military significance and practical application value.

[0005] The technical solution of the present invention is as follows:

[0006] A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning, which can carry a gun calibration device for calibrating an artillery barrel with a recoil brake, includes:

[0007] An artillery barrel adapter ring, which includes a shaft sleeve, an expansion sleeve and a positioning ring respectively fixedly connected to both ends of the shaft sleeve. The outer wall of the expansion sleeve is separated into a plurality of elastic pieces by strip-shaped slits equally spaced along its axial direction. A conical shaft hole is formed inside the shaft sleeve, and the outer wall of the positioning ring has a conical surface;

[0008] A limit sleeve, which is connected to the positioning ring by bolts;

[0009] A main shaft, which is installed in the accommodation chamber defined by the artillery barrel adapter ring and the limit sleeve in a conforming manner, and has a through stepped hole at its axis;

[0010] The conical expansion body is arranged at the front end inside the expansion sleeve and is threadedly connected to the part of the main shaft extending into the expansion sleeve. A guiding block is arranged on the conical expansion body, and the guiding block is slidably connected to the strip-shaped notch;

[0011] The shaft retaining ring is clamped at one end of the main shaft where it is connected to the conical expansion body to prevent the conical expansion body from falling off the main shaft.

[0012] Furthermore, the conical expansion body includes a support plate, and one side of the support plate extends outward to form a conical cylinder.

[0013] Furthermore, mounting holes are formed on the conical cylinder, and the guiding block is fixed in the mounting holes by screws.

[0014] Furthermore, the guiding block includes a base and a guiding strip fixedly connected to the base.

[0015] Furthermore, a protruding shoulder is provided in the middle of the main shaft, and a stop is provided on the limit sleeve that is adapted to the shoulder.

[0016] Furthermore, a protruding part is formed on the elastic piece that can increase the contact area between the expansion sleeve and the inner wall of the gun barrel.

[0017] Furthermore, a flange is formed at one end of the limit sleeve away from the connection with the positioning ring.

[0018] Furthermore, a handwheel is fixedly connected to one end of the main shaft away from the connection with the conical expansion body.

[0019] Furthermore, a non-slip structure with alternating convex and concave parts is provided on the outer edge of the handwheel.

[0020] Furthermore, the gun barrel adapter ring, the limit sleeve and the main shaft are concentric.

[0021] The present invention adopting the above technical solution can bring the following beneficial effects:

[0022] Through the mechanism designed by the present invention, accurate calibration of the gun barrel can be achieved without disassembling the recoil brake; compared with the traditional calibration method, it takes less time and can improve the rapid response ability of the gun in field operations; it avoids the damage to the connection part of the gun barrel caused by repeated disassembly of the recoil brake, and has important military significance and practical application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an axonometric view of the present invention;

[0024] Figure 2 is a front view of the present invention;

[0025] Figure 3 is a sectional view of the present invention;

[0026] Figure 4 Schematic diagram of the usage state of the present invention;

[0027] Figure 5 Schematic diagram of the structure of the gun barrel adapter ring of the present invention;

[0028] Figure 6 Schematic diagram of the structure of the limit sleeve of the present invention;

[0029] Figure 7 Schematic diagram of the structure of the main shaft of the present invention;

[0030] Figure 8 Schematic diagram of the structure of the conical expansion body of the present invention.

[0031] In the figure, 1 - gun barrel adapter ring, 2 - limit sleeve, 3 - main shaft, 4 - conical expansion body, 5 - guiding block, 6 - limit retaining ring, 7 - handwheel, 10 - expansion sleeve, 11 - shaft sleeve, 21 - spigot, 22 - flange, 31 - shaft shoulder, 41 - support plate, 42 - conical cylinder, 50 - base, 51 - guiding strip, 100 - raised portion, 200 - gun barrel, 300 - recoil brake, 400 - gun calibration device. Detailed implementation manner

[0032] A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning, which can carry a gun calibration device for calibrating the gun barrel 200 with a recoil brake 300. During the calibration process, it is not necessary to remove the recoil brake 300, the time consumed in the calibration process is less, the rapid response ability of the gun can be improved during field operations, and the situation that the connection part of the gun barrel 200 is damaged due to repeated disassembly of the recoil brake can be avoided.

[0033] See Figures 1-8 As shown, a highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning includes a gun barrel adapter ring 1, a limit sleeve 2, a main shaft 3, a conical expansion body 4, a guiding block 5 and a limit retaining ring 6;

[0034] The gun barrel adapter ring 1 includes a shaft sleeve 11 and an expansion sleeve 10 and a positioning ring 12 respectively and fixedly connected to both ends of the shaft sleeve 11;

[0035] Wherein, the outer wall of the expansion sleeve 10 is separated into a plurality of elastic pieces by strip-shaped notches equally spaced along its axial direction. After the elastic pieces are pushed up by the conical expansion body 4, they can be in close contact with the inner wall of the gun barrel 200, so that the expansion sleeve 10 is firmly connected to the inner wall of the gun barrel 200; in this embodiment, a raised portion 100 is formed on each elastic piece, and the raised portion 100 can increase the contact area between the expansion sleeve 10 and the inner wall of the gun barrel 200, making the connection between the expansion sleeve 10 and the inner wall of the gun barrel 200 more stable;

[0036] Among them, a conical shaft hole is formed inside the bushing 11, and the conical shaft hole can limit the main shaft 3;

[0037] Among them, the outer wall of the positioning ring 12 has a conical surface, which is in contact connection with the inlet of the gun barrel 200, facilitating the positioning with the gun barrel 200, and can ensure the coaxial accuracy between the gun barrel adapter ring 1 and the gun barrel 200 after positioning; it should be noted that the inner diameter of the gun barrel 200 to be calibrated should be between the minimum diameter and the maximum diameter of the conical surface, otherwise the gun barrel adapter ring 1 will completely fall into the gun barrel 200 or the gun barrel adapter ring 1 cannot be stably connected with the gun barrel 200;

[0038] The limiting sleeve 2 is connected to the positioning ring 12 by bolts. A stop 21 is formed at one end of the limiting sleeve 2 close to the positioning ring 12, and a flange 22 is formed at the end far from the positioning ring 12;

[0039] The main shaft 3 is installed in the accommodation chamber defined by the gun barrel adapter ring 1 and the limiting sleeve 2 in a conforming manner. Its axis has a through stepped hole, which is used to reduce the weight of the whole device on the one hand and to carry the gun calibration device on the other hand; the main shaft 3 has a thread at one end and is fixedly connected with a handwheel 7 at the other end, and has a protruding shoulder 31 in the middle. The shoulder 31 is adapted to the stop 21 on the positioning ring 12 to limit the main shaft 3; combined with the conical shaft hole inside the bushing 11 mentioned above, the main shaft 3 cannot move axially, and the main shaft 3 can be rotated through the handwheel 7;

[0040] The conical expansion body is arranged at the front end inside the expansion sleeve 10. Specifically, the conical expansion body 4 includes a support plate 41. The center of the support plate 41 is threadedly connected to one end of the main shaft 3 extending into the expansion sleeve 10. And one side of the support plate 41 extends outward to form a conical cylinder 42, which is the key component for pushing open the elastic piece, and an installation hole is formed on the conical cylinder 42;

[0041] The guiding block 5 is arranged in the installation hole on the conical expansion body 4, and specifically includes a base 50 and a guiding strip 51 fixedly connected to the base. Among them, the base 50 is bolted to the installation hole, and the guiding strip 51 is slidably connected to the strip-shaped notch;

[0042] The shaft retaining ring 6, commonly known as a snap ring, is sleeved on one end of the main shaft 3 connected to the conical expansion body 4 to prevent the conical expansion body 4 from falling off due to excessive displacement during the rotation of the main shaft 3.

[0043] In this embodiment, the outer edge of the handwheel 7 is provided with an anti-slip structure with alternating convex and concave parts, which is convenient for the operator to hold and rotate;

[0044] In this embodiment, the artillery barrel adapter ring 1, the limit sleeve 2, and the main shaft 3 are concentric after assembly.

[0045] The working principle of the present invention is briefly described as follows:

[0046] After assembling the various components of the invention according to the aforementioned connection relationship, the end where the artillery barrel adapter ring 1 is located is inserted through the recoil brake 300 into the artillery barrel 200 until the conical surface of the positioning ring 12 is tangent to the muzzle end face, that is, it cannot be inserted forward any further at this time; hold the barrel of the limit sleeve 2 with the left hand, and rotate the handwheel 7 on the main shaft 3 clockwise with the right hand. The handwheel 7 drives the main shaft 3 to rotate. Under the action of the thread and the guiding block 5, the conical expansion body 4 moves towards the muzzle direction. The front end of the elastic piece on the expansion sleeve 10 is lifted by the conical barrel 42, and the connecting part 100 expands accordingly. After expansion, it tightly abuts against the inner wall of the artillery barrel 200. Coupled with the fact that the positioning ring 12 also stably contacts the muzzle end face, the entire artillery barrel adapter ring 1 is stably fixed inside the artillery barrel 200. Then, the calibration device 400 is installed and inserted into the stepped hole of the main shaft 3 on the right side to achieve the coaxial connection between the calibration device 400 and the artillery barrel 200, and then the calibration operation can be carried out.

[0047] The improvement effect of the present invention compared with the prior art is very obvious, specifically reflected in the following aspects:

[0048] 1. Structural optimization and performance improvement: Compared with traditional coaxial connectors, the structure of this device is simpler, with the characteristics of small volume and light weight. At the same time, it has good coaxiality and high rigidity, is not prone to bending deformation, and can better meet the actual use requirements.

[0049] 2. Enhanced bearing capacity: The high-rigidity design of the device enables it to install large-caliber gun sights, lasers and other equipment, broadening the selection range of calibration equipment and improving the accuracy and reliability of calibration.

[0050] 3. Convenient and efficient operation: The installation and disassembly process is extremely convenient. During installation, the device only needs to be directly inserted into the artillery barrel 200, without complex operations. It can be quickly disassembled and assembled by a single person, greatly improving work efficiency.

[0051] 4. Simplified calibration process: Calibration can be carried out without disassembling the recoil brake 200, greatly reducing the preparatory work and calibration time before calibration, significantly improving the use efficiency and response speed of the artillery, and having obvious advantages in emergency combat or mission scenarios.

[0052] 5. Improve calibration accuracy: The conical surface of the gun barrel adapter ring 1 is tangent to the muzzle end face, achieving a tight fit between the gun barrel adapter ring 1 and the gun barrel 200. This realizes high-precision coaxiality between the calibration device and the gun barrel 200, effectively reducing the calibration error, improving the firing accuracy of the gun, and enhancing the combat effectiveness of the gun.

[0053] 6. Protect gun components: It avoids damage to the gun barrel 200 and the connection parts of the recoil brake caused by repeated disassembly of the recoil brake 300, helps extend the service life of each component of the gun, and reduces the maintenance cost.

[0054] 7. Wide adaptability: The extended design and adjustable structure enable it to be applicable to various models of guns, with good versatility, and can meet the diverse needs of different troops and combat scenarios.

[0055] The above is only the preferred specific embodiment of the present invention, and is not a limitation of the present invention. Any equivalent replacement and modification made by those skilled in the art without departing from the guidance of the present invention shall be regarded as falling within the protection scope of the present invention.

Claims

1. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning, which can be used for gun calibration, for calibrating a gun barrel (200) with a recoil brake (300), characterized in that Comprising: A gun barrel adapter ring (1), the gun barrel adapter ring (1) includes a bushing (11), and an expansion sleeve (10) and a positioning ring (12) respectively and fixedly connected to both ends of the bushing (11). Wherein, the outer wall of the expansion sleeve (10) is separated into a plurality of elastic pieces by strip-shaped notches equally spaced along its axial direction. A tapered shaft hole is formed inside the bushing (11), and the outer wall of the positioning ring (12) has a tapered surface; A limit sleeve (2), which is bolted to the positioning ring (12); A main shaft (3), the main shaft (3) is installed conformally in the accommodation chamber defined jointly by the gun barrel adapter ring (1) and the limit sleeve (2), and a through stepped hole is provided at its axis; A tapered expansion body (4), the tapered expansion body (4) is arranged at the front end inside the expansion sleeve (10) and is threadedly connected to the part of the main shaft (3) extending into the expansion sleeve (10); A guide block (5), the guide block (5) is arranged on the tapered expansion body (4) and is slidably connected to the strip-shaped notch; A limit retaining ring (6), the shaft retaining ring (6) is clamped at one end where the main shaft (3) is connected to the tapered expansion body (4) to prevent the tapered expansion body (4) from falling off the main shaft (3).

2. The highly reliable coaxial expansion sleeve connecting device with conical surface guiding and positioning according to claim 1, wherein, The tapered expansion body (4) includes a support plate (41), and a tapered cylinder body (42) extends outward from one side of the support plate (41).

3. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 2, characterized in that An installation hole is formed on the tapered cylinder body (42), and the guide block (5) is fixed in the installation hole by screws.

4. The highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 3, characterized in that, The guide block (5) includes a base (50) and a guide strip (51) fixedly connected to the base.

5. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 1, characterized in that, A raised shoulder (31) is provided in the middle of the main shaft (3), and a stop (21) adapted to the shoulder (31) is provided on the limit sleeve (2).

6. The highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 1, characterized in that, A convex portion (100) capable of increasing the contact area between the expansion sleeve (10) and the inner wall of the gun barrel (200) is formed on the elastic piece.

7. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 1, characterized in that, A flange (22) is formed at one end of the limit sleeve (2) far from the connection with the positioning ring (12).

8. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 1, characterized in that, A handwheel (7) is fixedly connected to one end of the main shaft (3) far from the connection with the tapered expansion body (4).

9. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 5, characterized in that An anti-slip structure with alternating convex and concave is provided on the outer edge of the handwheel (7).

10. A highly reliable coaxial expansion sleeve connection device with conical surface guiding and positioning according to claim 1, characterized in that, After assembly, the gun barrel adapter ring (1), the limit sleeve (2) and the main shaft (3) are concentric with each other.

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