A high-reliability coaxial expansion sleeve connection device guided and positioned by conical surfaces

Abstract

A high-reliability coaxial expansion sleeve connection device of taper guide positioning, comprising a gun barrel adapter ring, a limiting sleeve, a main shaft, a tapered expansion body, a guide block and a limiting ring; the gun barrel adapter ring comprises a shaft sleeve and an expansion sleeve and a positioning ring fixedly connected at both ends of the shaft sleeve respectively, wherein the outer wall of the expansion sleeve is separated into multiple spring sheets by strip-shaped openings opened at equal intervals along the axial direction, a tapered shaft hole is formed in the interior of the shaft sleeve, and the outer wall of the positioning ring has a taper surface; the limiting sleeve and the positioning ring are connected by bolts; the main shaft is installed in the accommodating cavity defined by the gun barrel adapter ring and the limiting sleeve together, and the shaft center has a stepped hole penetrating through; the tapered expansion body is arranged at the front end inside the expansion sleeve and is threadedly connected with the part of the main shaft extending into the expansion sleeve, the guide block is arranged on the tapered expansion body, and the guide block is in sliding connection with the strip-shaped openings; the shaft ring is clamped at one end of the main shaft connected with the tapered expansion body to prevent the tapered expansion body from falling off the main shaft.

Description

Technical Field

[0001] This utility model relates to the field of artillery calibration technology, and in particular to a highly reliable coaxial expansion sleeve connection device for artillery barrel calibration with conical guide positioning, which is suitable for rapid and accurate calibration of various types of artillery without disassembling the muzzle brake. Background Technology

[0002] In the use and maintenance of artillery, barrel calibration is a crucial step in ensuring firing accuracy. Traditional artillery calibration methods, when connecting calibration equipment, require the muzzle brake to be removed, making it difficult to effectively connect the equipment to the gun barrel and ensure coaxiality, resulting in poor calibration accuracy. Removing the muzzle brake is not only cumbersome, requiring specialized tools and technicians, consuming significant time and manpower, but repeated disassembly can also damage the muzzle brake and the gun barrel connection, affecting artillery performance and service life. Especially in field operations or emergency missions, this traditional calibration method severely restricts the artillery's rapid response capability.

[0003] Therefore, developing a device that can achieve accurate calibration without disassembling the muzzle brake has significant military implications and practical application value. Utility Model Content

[0004] The purpose of this invention is to provide a highly reliable coaxial expansion sleeve connection device with conical surface guidance and positioning, which can achieve precise calibration of the artillery barrel without disassembling the muzzle brake; compared with the traditional calibration method, it takes less time and can improve the rapid response capability of the artillery in the field, which has important military significance and practical application value.

[0005] The technical solution of this utility model is as follows:

[0006] A highly reliable coaxial expansion sleeve connection device with conical guide positioning, capable of mounting a gun calibration device for calibrating gun barrels with muzzle brakes, comprising:

[0007] The gun barrel adapter ring includes a bushing and an expansion sleeve and a positioning ring respectively fixedly connected to both ends of the bushing. The outer wall of the expansion sleeve is divided into a plurality of spring pieces by strip-shaped notches that are equally spaced along its axial direction. A tapered shaft hole is formed inside the bushing, and the outer wall of the positioning ring has a tapered surface.

[0008] A limiting sleeve is provided, and the limiting sleeve is connected to the positioning ring by bolts.

[0009] The main shaft is fitted into the cavity defined by the gun barrel adapter ring and the limiting sleeve, and its axis has a through stepped hole.

[0010] A tapered expansion body is provided inside the front end of the expansion sleeve and is threadedly connected to the portion of the main shaft that extends into the expansion sleeve. A guide block is provided on the tapered expansion body, and the guide block is slidably connected to the strip-shaped notch.

[0011] A retaining ring is used to lock the shaft at the end where the main shaft connects to the tapered expansion body, preventing the tapered expansion body from falling off the main shaft.

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

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

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

[0015] Furthermore, the spindle has a raised shoulder in the middle, and the limiting sleeve has a stop that matches the shoulder.

[0016] Furthermore, the shrapnel has a protrusion that increases the contact area between the expansion sleeve and the inner wall of the cannon barrel.

[0017] Furthermore, a flange is formed on the end of the limiting sleeve away from the end connected to the positioning ring.

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

[0019] Furthermore, the outer edge of the handwheel is provided with an anti-slip structure with alternating convex and concave surfaces.

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

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

[0022] The mechanism designed in this utility model enables precise calibration of the artillery barrel without disassembling the muzzle brake. Compared with traditional calibration methods, it takes less time and can improve the rapid response capability of artillery in the field. It also avoids damage to the artillery barrel connection caused by repeated disassembly of the muzzle brake, and has important military significance and practical application value. Attached Figure Description

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

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

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

[0026] Figure 4 This is a schematic diagram of the usage state of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the gun barrel adapter ring of this utility model;

[0028] Figure 6 This is a schematic diagram of the structure of the limiting sleeve of this utility model;

[0029] Figure 7 This is a schematic diagram of the main shaft of this utility model;

[0030] Figure 8 This is a schematic diagram of the structure of the conical expansion body of this utility model.

[0031] In the diagram, 1-cannon barrel adapter ring, 2-limiting sleeve, 3-main shaft, 4-conical expansion body, 5-guide block, 6-limiting retaining ring, 7-handwheel, 10-expansion sleeve, 11-shaft sleeve, 21-stop, 22-flange, 31-shaft shoulder, 41-support plate, 42-conical cylinder, 50-base, 51-guide strip, 100-protrusion, 200-cannon barrel, 300-muzzle brake, 400-gun aiming device. Detailed Implementation

[0032] A highly reliable coaxial expansion sleeve connection device with conical guide positioning is provided. It can be equipped with a gun calibration device for calibrating the gun barrel 200 with a muzzle brake 300. During the calibration process, the muzzle brake 300 does not need to be removed, the calibration process takes less time, it can improve the rapid response capability of the artillery in the field, and it can also avoid damage to the connection part of the gun barrel 200 caused by repeated disassembly of the muzzle brake.

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

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

[0035] In this embodiment, the outer wall of the expansion sleeve 10 is divided into a plurality of spring pieces by strip-shaped notches that are equally spaced along its axial direction. After the spring pieces are lifted by the conical expansion body 4, they can make close contact with the inner wall of the gun barrel 200, thereby making the expansion sleeve 10 and the inner wall of the gun barrel 200 firmly connected. In this embodiment, a protrusion 100 is formed on each spring piece. The protrusion 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 tapered shaft hole is formed inside the bushing 11, which can limit the main shaft 3;

[0037] The outer wall of the positioning ring 12 has a conical surface that contacts and connects with the inlet of the gun barrel 200, facilitating positioning with the gun barrel 200 and ensuring 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 must be between the minimum and maximum diameter of the conical surface; otherwise, the gun barrel adapter ring 1 may fall completely into the gun barrel 200 or the gun barrel adapter ring 1 may fail to achieve a stable connection with the gun barrel 200.

[0038] The limiting sleeve 2 and the positioning ring 12 are connected by bolts. The end of the limiting sleeve 2 near the positioning ring 12 has a stop 21, and the end away from the positioning ring 12 has a flange 22.

[0039] The main shaft 3 is fitted into the cavity defined by the gun barrel adapter ring 1 and the limiting sleeve 2. Its shaft has a through stepped hole, which serves to reduce the weight of the entire device and to mount the gun aiming device. The main shaft 3 has a threaded end and a handwheel 7 fixedly connected to the other end. It has a raised shoulder 31 in the middle, which matches the stop 21 on the positioning ring 12 to limit the main shaft 3. With the tapered shaft hole inside the aforementioned bushing 11, the main shaft 3 cannot move axially. The main shaft 3 can be rotated by the handwheel 7.

[0040] The conical expansion body is located inside the front end of 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 that extends into the expansion sleeve 10. The support plate 41 extends outward on one side to form a conical cylinder 42. The conical cylinder 42 is the key component for opening the spring piece, and an installation hole is formed on the conical cylinder 42.

[0041] The guide block 5 is set in the mounting hole on the conical expansion body 4, and specifically includes a base 50 and a guide strip 51 fixedly connected to the base. The base 50 is bolted to the mounting hole, and the guide strip 51 is slidably connected to the strip-shaped notch.

[0042] The retaining ring 6, commonly known as a retaining ring, is attached to the end where the main shaft 3 connects to the tapered expansion body 4 to prevent the tapered 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 surfaces, making it easy for operators to grip and rotate it;

[0044] In this embodiment, the assembled gun barrel adapter ring 1, the limiting sleeve 2, and the main shaft 3 are concentric.

[0045] The working principle of this utility model is briefly described below:

[0046] After assembling the various components of the utility model according to the aforementioned connection relationship, insert the end of the cannon barrel adapter ring 1 through the muzzle brake 300 into the cannon barrel 200 until the conical surface of the positioning ring 12 is tangent to the muzzle end face, at which point it can no longer be inserted forward; hold the cylinder of the limiting sleeve 2 with your left hand, and rotate the handwheel 7 on the main shaft 3 clockwise with your right hand. The handwheel 7 drives the main shaft 3 to rotate, and under the action of the thread and the guide block 5, the conical expansion body 4 moves towards the muzzle. The conical cylinder 42 lifts the front end of the spring clip on the expansion sleeve 10, causing the connecting part 100 to expand to its maximum size. After expansion, it presses tightly against the inner wall of the cannon barrel 200. In addition, the positioning ring 12 also makes stable contact with the muzzle end face, so that the cannon barrel adapter ring 1 is stably fixed inside the cannon barrel 200. Then, the calibration device 400 is installed and inserted into the stepped hole of the right main shaft 3 to achieve coaxial connection between the calibration device 400 and the cannon barrel 200, and the calibration operation can be carried out.

[0047] The present invention has a significant improvement over the prior art, specifically in the following aspects:

[0048] 1. Structural optimization and performance improvement: Compared with traditional coaxial connectors, this device has a simpler structure, is smaller and lighter, and has good coaxiality and high rigidity, making it less prone to bending and deformation, and better meeting the needs of actual use.

[0049] 2. Enhanced load-bearing capacity: The high rigidity design of the device enables it to be equipped with large-scale gun-calibrating sights, lasers, and other equipment, broadening the range of calibration equipment options and improving the accuracy and reliability of calibration.

[0050] 3. Convenient and efficient operation: The installation and disassembly process is extremely convenient. During installation, simply insert the device directly into the cannon barrel 200. No complicated operations are required. It can be quickly installed and disassembled by a single person, which greatly improves work efficiency.

[0051] 4. Simplified calibration process: Calibration can be performed without disassembling the muzzle brake 200, which greatly reduces the preparation work and calibration time before calibration, significantly improves the efficiency and response speed of the artillery, and has significant advantages in emergency combat or mission scenarios.

[0052] 5. Improve calibration accuracy: By having the conical surface of the gun barrel adapter ring 1 tangentially contact the muzzle end face, a tight fit is achieved between the gun barrel adapter ring 1 and the gun barrel 200, realizing high-precision coaxiality between the calibration equipment and the gun barrel 200, effectively reducing calibration errors, improving the firing accuracy of the gun, and enhancing the combat effectiveness of the gun.

[0053] 6. Protect artillery components: Avoids damage to the artillery barrel 200 and the connecting parts of the artillery due to repeated disassembly of the muzzle brake 300, which helps to extend the service life of various artillery components and reduce maintenance costs.

[0054] 7. Wide adaptability: The extended design and adjustable structure make it suitable for various types of artillery, with good versatility, and can meet the diverse needs of different troops and combat scenarios.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any equivalent substitutions and modifications made by those skilled in the art without departing from the guidance of the present utility model shall be deemed to fall within the protection scope of the present utility model.

Claims

1. A highly reliable coaxial expansion sleeve connection device with conical surface guidance and positioning, which can be used to calibrate a gun barrel (200) with a muzzle brake (300), characterized in that, include: The gun barrel adapter ring (1) includes a bushing (11) and a expansion sleeve (10) and a positioning ring (12) respectively fixedly connected to both ends of the bushing (11). The outer wall of the expansion sleeve (10) is divided into a plurality of spring pieces by strip-shaped notches that are 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. The limiting sleeve (2) is connected to the positioning ring (12) by bolts; The main shaft (3) is fitted into the cavity defined by the gun barrel adapter ring (1) and the limiting sleeve (2), and its axis has a through stepped hole. A tapered expansion body (4) is provided inside the front end of the expansion sleeve (10) and is threadedly connected to the part of the main shaft (3) that extends into the expansion sleeve (10); Guide block (5), the guide block (5) is disposed on the conical expansion body (4) and is slidably connected to the strip-shaped notch; A retaining ring (6) is used to lock the shaft at the end where the main shaft (3) connects to the tapered expansion body (4) to prevent the tapered expansion body (4) from falling off the main shaft (3).

2. The high-reliability coaxial expansion sleeve connection device with conical surface guidance and positioning according to claim 1, characterized in that, The conical expansion body (4) includes a support plate (41), one side of which extends outward to form a conical cylinder (42).

3. The high-reliability coaxial expansion sleeve connection device with conical surface guidance and positioning according to claim 2, characterized in that, Mounting holes are formed on the conical cylinder (42), and the guide block (5) is fixed in the mounting holes by screws.

4. The high-reliability coaxial expansion sleeve connection device with conical surface guidance 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. The high-reliability coaxial expansion sleeve connection device with conical surface guidance and positioning according to claim 1, characterized in that, The main shaft (3) has a raised shoulder (31) in the middle, and the limiting sleeve (2) has a stop (21) that matches the shoulder (31).

6. The high-reliability coaxial expansion sleeve connection device with conical surface guidance and positioning according to claim 1, characterized in that, The shrapnel has a protrusion (100) that can increase the contact area between the expansion sleeve (10) and the inner wall of the cannon barrel (200).

7. The high-reliability coaxial expansion sleeve connection device with conical surface guidance and positioning according to claim 1, characterized in that, A flange (22) is formed on the end of the limiting sleeve (2) away from the end connected to the positioning ring (12).

8. The high-reliability coaxial expansion sleeve connection device with conical surface guidance and positioning according to claim 1, characterized in that, A handwheel (7) is fixedly connected to one end of the main shaft (3) away from the end connected to the conical expansion body (4).

9. A high-reliability coaxial expansion sleeve connection device for conical surface guidance and positioning according to claim 5, characterized in that, The outer edge of the handwheel (7) is provided with an anti-slip structure with alternating convex and concave sections.

10. A high-reliability coaxial expansion sleeve connection device for conical surface guidance and positioning according to claim 1, characterized in that, After assembly, the gun barrel adapter ring (1), the limiting sleeve (2), and the main shaft (3) are concentric.

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