A gun barrel axial position conversion and positioning device and conversion and positioning method

Abstract

The present invention proposes a gun barrel axial position conversion and positioning device and a positioning conversion method, which adopts a core rod-housing-pin-adjusting gasket-leaf spring-pull ring structure. When the pull ring is pulled and rotated into place during operation, the core rod-housing-pin-adjusting gasket-leaf spring-pull ring structure will not cause malfunction when there is no external force, thereby realizing the rapid conversion of the gun barrel between three different state positions: zero position, front position and rear position. In the process of the gun barrel being converted between different state positions, the positioning surface on the core rod is used for positioning, thereby avoiding the phenomenon that the gun barrel needs to move back and forth due to the difficulty in aligning the positioning holes, and the reliability is high, time-saving and labor-saving. The conversion of the gun barrel between different state positions is realized by rotating the core rod, which is convenient and quick to operate. According to the usage, the spring force of the leaf spring is adjusted by increasing or decreasing the number of adjusting leaf springs and adjusting gaskets, thereby ensuring reliable positioning.

Description

Technical Field

[0001] The invention belongs to the field of artillery, and in particular relates to a gun barrel axial position conversion and positioning device and a positioning conversion method. Background Art

[0002] During the debugging process, the gun needs to be switched between three different positions, namely zero position, front position and rear position. The switching between the three positions requires the gun barrel to be moved forward or backward. When the gun barrel is moved to the required position, it needs to be fixed. The general positioning method is to drill holes on the gun barrel and the cradle and insert positioning bolts into the holes.

[0003] There are two shortcomings of the general positioning method: first, it is difficult to align the positioning holes. When the artillery barrel moves forward or backward, the operator often uses too much force, causing the barrel to move beyond the desired position. Therefore, the barrel needs to be moved back and forth, which is labor-intensive and inefficient. Second, the operating space is narrow, and the operator needs to turn sideways and stretch his arm to the positioning hole to place the bolt. He cannot see visually, which makes operation inconvenient and poses a safety hazard. Summary of the invention

[0004] In order to solve the problems of difficult positioning, inconvenient operation, low efficiency and low safety of a gun barrel during state position conversion in the background technology, the present invention proposes a gun barrel axial position conversion and positioning device and a positioning conversion method.

[0005] The technical solution of the present invention is: a gun barrel axial position conversion and positioning device, comprising a core rod 1, a positioner 2, a pin 3, an adjustment leaf spring 5, a main leaf spring 6, a pull ring 7 and a positioning block 8;

[0006] The inner cavity of the positioner 2 is a hollow cavity, with a long hole at one end of the top and a base at the bottom; a protrusion is provided in the middle, and a threaded hole is provided at the protrusion; a pin hole is also provided in the middle;

[0007] The core rod 1 is located in the cavity of the positioner 2 for use, one end of which is provided with a rotating head for easy rotation of the core rod 1, and the other end is used to connect to the gun barrel; a short limit groove 12 and a long limit groove 16 are distributed along the axis of the rod at 180 degrees on the side wall of the rod body near the rotating head;

[0008] The side wall of the core rod 1 is divided into four directions in the circumferential direction: 0°, 90°, 180° and 270°, wherein the same radial direction as the short limit groove is 0°, and the same radial direction as the long limit groove 16 is 180°. Then, a rear position give way groove 13 is opened in the 0° direction of the middle side wall of the core rod 1, and a front position give way groove 15 is opened in the 180° direction. The groove width of the rear position give way groove 13 is greater than the groove width of the front position give way groove 15, and in the axial direction, the axial position range of the front position give way groove 15 covers the front groove wall of the rear position give way groove 13; a rear position positioning groove 17 and a front position positioning groove 18 are opened in the 90° direction of the middle side wall of the core rod 1, and a zero position positioning groove 19 is opened in the 270° direction, wherein the zero position positioning groove 19 connects the front position give way groove 15 with the rear position give way groove 13. The width of the zero-position positioning groove 19 is smaller than the width of the front-position yielding groove 15, the rear groove wall of the zero-position positioning groove 19 is in the same axial position as the rear groove wall of the front-position yielding groove 15, and the front groove wall of the zero-position positioning groove 19 is in the same axial position as the front groove wall of the rear-position yielding groove 13; the rear-position positioning groove 17 is connected to the rear-position yielding groove 13; the rear groove wall of the rear-position positioning groove 17 is in the same axial position as the rear groove wall of the rear-position yielding groove 13, and the front groove wall of the front-position positioning groove 18 is in the same axial position as the front groove wall of the front-position yielding groove 15; the groove widths of the rear-position positioning groove 17, the front-position positioning groove 18 and the zero-position positioning groove 19 are equal, and the groove widths of the rear-position positioning groove 17, the front-position positioning groove 18 and the zero-position positioning groove 19 are equal to the outer diameter of the pin 3;

[0009] The adjusting leaf spring 5 is a spring leaf with a bend, one end of which is provided with a through hole;

[0010] The main leaf spring 6 is a spring leaf with a bend, a through hole is opened at one end, and a positioning block hole is opened at the other end;

[0011] One end of the adjustment leaf spring 5 and the main leaf spring 6 with a through hole is located on the protrusion of the locator 2, and the other end of the main leaf spring 6 is located at the long hole of the locator 2. After the positioning block 8 passes through the positioning block hole at the other end of the main leaf spring 6, it is connected to the pull ring;

[0012] The core rod 1 and the locator 2 are unlocked and fixed by the locating block 8, and the pin 3 is in different positions of the rear position locating groove 17, the front position locating groove 18 or the zero position locating groove 19, thereby finally realizing the conversion of the gun body to the rear position, the front position or the zero position.

[0013] A further technical solution of the present invention is that the rotating head at one end of the core rod 1 is a hexagonal joint 11 , and the other end is axially provided with a groove, a connecting pin hole 14 is provided on the groove wall, and the axis of the pin hole is perpendicular to the axis of the core rod 1 .

[0014] A further technical solution of the present invention is: a pressing plate, an adjusting leaf spring, a main leaf spring and an adjusting gasket are placed in sequence from top to bottom on the raised portion of the outer wall of the positioner 2, and the magnitude of the spring force is adjusted by increasing or decreasing the number of adjusting leaf springs and adjusting gaskets.

[0015] A further technical solution of the present invention is: the positioning block 8 is a square block in the middle, with coaxial columns at both ends and a pull ring hole at one end; the size of the square block must be guaranteed to be located in the long hole of the positioner 2.

[0016] A further technical solution of the present invention is: after the positioning block 8 is inserted into the long hole, the other end is located in the short limiting groove of the core rod 1 to form a lock; when unlocking is required, lift the pull ring, pull the positioning block 8 out of the long hole and rotate the angle so that the square block is stuck on the outer wall surface of the locator to complete the unlocking.

[0017] A further technical solution of the present invention is: a conversion and positioning method of a gun barrel axial position conversion and positioning device, comprising the following steps:

[0018] Step 1: Define the initial state and conversion positioning rules: The initial position is zero position, at which time the zero position positioning groove 19 on the core rod 1 clamps the pin 3;

[0019] Step 2: Define the conversion positioning rules: When the gun body is converted from the front position to the rear position, it needs to be converted to the zero position first, and then to the rear position; when the gun body is converted from the rear position to the front position, it needs to be converted to the zero position first, and then to the front position.

[0020] Step 3: This step includes two parts: conversion from zero position to front position, conversion from front position to zero position, conversion from zero position to back position, and conversion from back position to zero position.

[0021] A further technical solution of the present invention is: in step 3, the conversion from the zero position to the front position includes the following sub-steps:

[0022] Step 3.1: Pull the pull ring 7 upward to pull the rectangular part of the positioning block 8 out of the long hole 21 of the shell 2, and rotate the pull ring 7 90 degrees to make the lower plane of the rectangular body of the positioning block 8 fit with the upper surface of the shell 2 to prevent the positioning block 8 from falling into the long hole 21 of the shell 2 due to the spring force. At this time, the limiting boss 29 of the positioning block 8 is separated from the short limiting groove 12 of the core rod 2;

[0023] Step 3.2: Rotate the core rod 1 90 degrees clockwise along the normal direction of the end face of the hexagonal joint 11, then pull the core rod 1 toward the normal direction of the end face of the hexagonal joint 11 so that the front groove wall of the front yield groove 15 is close to the cylindrical surface of the pin 3, and then rotate the core rod 1 90 degrees clockwise along the normal direction of the end face of the hexagonal joint 11. At this time, the front positioning groove 18 of the core rod 2 clamps the pin 3.

[0024] Step 3.3: Rotate the pull ring 7 90 degrees, and the positioning block 8 is pressed back into the long hole 21 by the force of the leaf spring. At this time, the limiting boss 29 of the positioning block 8 is inserted into the long limiting groove 16 of the core rod 2, and the artillery is positioned in the front position.

[0025] A further technical solution of the present invention is: in step 3, the conversion from the front position to the zero position includes the following sub-steps:

[0026] Step 3.1: Pull the pull ring 7 upward to pull the rectangular part of the positioning block 8 out of the long hole 21 of the shell 2, and rotate the pull ring 7 90 degrees to make the lower plane of the rectangular body of the positioning block 8 fit with the upper surface of the shell 2 to prevent the positioning block 8 from falling into the long hole 21 of the shell 2 due to the spring force. At this time, the limiting boss 29 of the positioning block 8 is separated from the long limiting groove 16 of the core rod 2;

[0027] Step 3.2: Rotate the core rod 1 90 degrees counterclockwise along the normal direction of the end face of the hexagonal joint 11, then pull the core rod 1 in the opposite direction to the normal direction of the end face of the hexagonal joint 11 so that the rear groove wall of the front position give way groove 15 is close to the cylindrical surface of the pin 3, and then rotate the core rod 1 90 degrees counterclockwise along the normal direction of the end face of the hexagonal joint 11. At this time, the zero positioning groove 15 of the core rod 2 clamps the pin 3.

[0028] Step 3.3: Rotate the pull ring 7 90 degrees, and the positioning block 8 is pressed back into the long hole 21 by the force of the leaf spring. At this time, the limiting boss 29 of the positioning block 8 is inserted into the short limiting groove 12 of the core rod 2, and the gun is positioned at the zero position.

[0029] A further technical solution of the present invention is: in step 3, the conversion from the zero position to the rear position includes the following sub-steps:

[0030] Step 3.1: Pull the pull ring 7 upward to pull the rectangular part of the positioning block 8 out of the long hole 21 of the shell 2, and rotate the pull ring 7 90 degrees to make the lower plane of the rectangular body of the positioning block 8 fit with the upper surface of the shell 2 to prevent the positioning block 8 from falling into the long hole 21 of the shell 2 due to the spring force. At this time, the limiting boss 29 of the positioning block 8 is separated from the short limiting groove 12 of the core rod 2.

[0031] Step 3.2: Rotate the core rod 1 90 degrees counterclockwise along the normal direction of the end face of the hexagonal joint 11, then pull the core rod 1 in the opposite direction to the normal direction of the end face of the hexagonal joint 11 so that the rear groove wall of the rear give way groove 13 is close to the cylindrical surface of the pin 3, and then rotate the core rod 1 90 degrees counterclockwise along the normal direction of the end face of the hexagonal joint 11. At this time, the rear positioning groove 17 of the core rod 2 clamps the pin 3.

[0032] Step 3.3: Rotate the pull ring 7 90 degrees, and the positioning block 8 is pressed back into the long hole 21 by the force of the leaf spring. At this time, the limiting boss 29 of the positioning block 8 is inserted into the long limiting groove 16 of the core rod 2, and the gun is positioned in the rear position.

[0033] A further technical solution of the present invention is: in step 3, the conversion from the rear position to the zero position includes the following sub-steps:

[0034] Step 3.1: Pull the pull ring 7 upward to pull the rectangular part of the positioning block 8 out of the long hole 21 of the shell 2, and rotate the pull ring 7 90 degrees to make the lower plane of the rectangular body of the positioning block 8 fit with the upper surface of the shell 2 to prevent the positioning block 8 from falling into the long hole 21 of the shell 2 due to the spring force. At this time, the limiting boss 29 of the positioning block 8 is separated from the long limiting groove 16 of the core rod 2.

[0035] Step 3.2: Rotate the core rod 1 90 degrees clockwise along the normal direction of the end face of the hexagonal joint 11, then pull the core rod 1 toward the normal direction of the end face of the hexagonal joint 11 so that the front groove wall of the rear give way groove 13 is close to the cylindrical surface of the pin 3, and then rotate the core rod 1 90 degrees clockwise along the normal direction of the end face of the hexagonal joint 11. At this time, the zero positioning groove 15 of the core rod 2 clamps the pin 3.

[0036] Step 3.3: Rotate the pull ring 7 90 degrees, and the positioning block 8 is pressed back into the long hole 21 by the force of the leaf spring. At this time, the limiting boss 29 of the positioning block 8 is inserted into the segment limiting groove 12 of the core rod 2, and the gun is positioned at the zero position.

[0037] Effects of the Invention

[0038] The technical effects of the present invention are:

[0039] (1) The structure of the core rod-housing-pin-adjusting gasket-leaf spring-pull ring is adopted. When the pull ring is pulled and rotated into place during operation, the structure of the core rod-housing-pin-adjusting gasket-leaf spring-pull ring will not cause malfunction when there is no external force, thereby realizing the rapid conversion of the gun barrel between the zero position, the forward position and the rear position.

[0040] (2) Long and short limit grooves are provided on the core rod, and a long hole is provided on the shell. The long and short limit grooves and the long hole cooperate with the pull ring and the positioning block. By pulling and rotating the pull ring and the positioning block, the core rod is rotated and pulled to realize the conversion of the gun barrel in different states and positions.

[0041] (3) When the gun barrel is switched between different states and positions, it is positioned by the positioning surface on the core rod, thus avoiding the phenomenon that the gun barrel needs to be moved back and forth due to the difficulty in aligning the positioning holes. This has high reliability and saves time and effort.

[0042] (4) The gun barrel is positioned by relying on the cooperation of the front position, zero position, and rear position positioning grooves on the core rod and the pin shaft, which avoids the operator placing positioning screws in a narrow space, making the operation convenient and safe.

[0043] (5) The gun barrel can be switched between different positions by rotating the core rod, which is convenient and quick to operate.

[0044] (6) By pulling and rotating the pull ring, the core rod can be prevented from rotating and positioned, which is easy to operate and reliable in positioning.

[0045] (7) According to the usage, the spring force of the leaf spring can be adjusted by increasing or decreasing the number of adjustment leaf springs and adjustment washers to ensure reliable positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a top view of the positioning device.

[0047] Figure 2 yes Figure 1 A partial enlarged view of .

[0048] Figure 3 It is a front view of the positioning device.

[0049] Figure 4 This is the position relationship diagram of the pin and the core rod when in zero position.

[0050] Figure 5 This is a diagram showing the position relationship between the pin and the core rod in the front position.

[0051] Figure 6 This is a diagram showing the position relationship between the pin and the core rod in the rear position.

[0052] Figure 7 It is the front view of the core rod.

[0053] Figure 8 It is a top view of the core rod.

[0054] Fig. 9 This is the first schematic diagram of the core rod axonometric measurement

[0055] Fig.10 This is the second schematic diagram of the core rod axonometric measurement

[0056] Fig.11 This is the third schematic diagram of the core rod axonometric measurement

[0057] Fig.12 This is the fourth schematic diagram of the core rod axonometric

[0058] Fig.13 It is an axonometric view of the positioner body.

[0059] Fig.14 It is an axonometric drawing of the pin shaft.

[0060] Fig.15 It is the axonometric view of adjusting leaf spring.

[0061] Fig.16 This is the axonometric view of the main leaf spring.

[0062] Fig.17 It is the axonometric drawing of the positioning block.

[0063] Fig.18 It is a pull ring axonometric drawing.

[0064] Fig.19 It is an axonometric view of the pressure plate.

[0065] Fig. 20 It is an axonometric view of the adjustment shim.

[0066] Fig.21 This is a schematic diagram of the installation of the positioning device on the artillery.

[0067] In the figure, 1-core rod, 2-housing, 3-pin shaft, 4-countersunk screw, 5-adjusting leaf spring, 6-main leaf spring, 7-pull ring, 8-positioning block, 9-pressure plate, 10-adjusting gasket, 11-hexagonal joint, 12-short limit groove, 13-rear position give way groove, 14-connecting pin hole, 15-front position give way groove, 16-long limit groove, 17-rear position positioning groove, 18-front positioning groove, 19-zero position positioning groove, 20-center axis hole, 21-long hole, 22-threaded hole, 23-pin shaft hole, 24-base, 25-adjusting leaf spring bolt hole, 26-main leaf spring bolt hole, 27-positioning block hole, 28-pull ring hole, 29-limiting boss, 30-countersunk through hole. DETAILED DESCRIPTION

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] See also Figure 1-Figure 21 , an axial positioning device for artillery, including a core rod, a shell, a pin, a countersunk screw, an adjustment leaf spring, a main leaf spring, a pull ring, a positioning block, a pressure plate, and an adjustment gasket. During assembly, the core rod is first inserted into the central shaft hole of the shell, and then the pin is installed into the pin hole of the shell, and the initial assembly position is at zero position; after the positioning block, the pull ring and the leaf spring are assembled, the parts are then installed on the boss of the shell in the order of a pressure plate, an adjustment leaf spring, a main leaf spring, and an adjustment gasket from top to bottom.

[0070] The spring force can be adjusted according to actual conditions by increasing or decreasing the number of adjusting leaf springs and adjusting washers.

[0071] During assembly, the first step is to insert the core rod 1 into the central axis hole 20 of the housing 2, and the zero-position positioning groove 19 of the core rod 1 is aligned with the pin hole 23 of the housing 2; the second step is to install the pin 3 into the pin hole 23 of the housing 2, and the pin 3 and the pin hole 23 are interference fit. The third step is to insert the end of the positioning block 8 with the pull ring hole 28 into the positioning block hole 27 of the main leaf spring 6, and this fit is a clearance fit; the fourth step is to install the pull ring 7 into the pull ring hole 28 of the positioning block 8; the fifth step is to press the plate 9, the adjustment leaf spring 5, the main leaf spring 6, and the adjustment gasket 10 from top to bottom, and install each part on the boss on the housing 2 with the countersunk screw 4, the positioning block 8 enters the long hole 21 on the housing 2, and the limiting boss 29 on the positioning block 8 enters the short limiting groove 12 of the core rod 1. The size of the spring force can be adjusted by increasing or decreasing the number of the adjustment leaf spring 5 and the adjustment gasket 10 according to actual conditions.

[0072] The initial position of the axial positioning device is the zero position, at which time the zero position positioning groove 19 on the core rod 1 clamps the pin 3.

[0073] Reference Figure 4 and Figure 5 , switching from the zero position to the front position, the first step is to pull the pull ring 7 upwards, pull the rectangular part of the positioning block 8 out of the long hole 21 of the shell 2, and rotate the pull ring 7 90 degrees to make the lower plane of the rectangular body of the positioning block 8 fit with the upper surface of the shell 2, to prevent the positioning block 8 from falling into the long hole 21 of the shell 2 due to the spring force, at this time, the limiting boss 29 of the positioning block 8 is separated from the short limiting groove 12 of the core rod 2. The second step is to rotate the core rod 1 90 degrees clockwise along the normal direction of the end face of the hexagonal joint 11, and then pull the core rod 1 to the front position positioning surface in the normal direction of the end face of the hexagonal joint 11, and then rotate the core rod 1 90 degrees clockwise along the normal direction of the end face of the hexagonal joint 11, at this time, the front positioning groove 18 of the core rod 2 clamps the pin 3. The third step is to rotate the pull ring 7 90 degrees, and the positioning block 8 is pressed back into the long strip hole 21 by the force of the leaf spring. At this time, the limiting boss 29 of the positioning block 8 is inserted into the long limiting groove 16 of the core rod 2, and the gun is positioned in the front position. The reverse operation can be switched from the front position to the zero position.

[0074] Reference Figure 4 and Figure 6, switching from the zero position to the rear position, the first step is to pull the pull ring 7 upwards, pull the rectangular part of the positioning block 8 out of the long hole 21 of the shell 2, and rotate the pull ring 7 90 degrees to make the lower plane of the rectangular body of the positioning block 8 fit with the upper surface of the shell 2, to prevent the positioning block 8 from falling into the long hole 21 of the shell 2 due to the spring force, at this time, the limiting boss 29 of the positioning block 8 is separated from the short limiting groove 12 of the core rod 2. The second step is to rotate the core rod 1 90 degrees counterclockwise along the normal direction of the end face of the hexagonal joint 11, and then pull the core rod 1 in the opposite direction of the normal direction of the end face of the hexagonal joint 11 to the rear position positioning surface, and then rotate the core rod 1 90 degrees counterclockwise along the normal direction of the end face of the hexagonal joint 11, at this time, the rear positioning groove 17 of the core rod 2 clamps the pin 3. The third step is to rotate the pull ring 7 by 90 degrees, and the positioning block 8 is pressed back into the long strip hole 21 by the force of the leaf spring. At this time, the limiting boss 29 of the positioning block 8 is inserted into the long limiting groove 16 of the core rod 2, and the gun is positioned in the rear position. The reverse operation can be switched from the rear position to the zero position.

[0075] To switch from the front position to the back position, you need to first switch to the zero position and then switch to the back position.

[0076] To switch from the rear position to the front position, you need to first switch to the zero position, and then switch to the front position.

[0077] Reference Figure 7 and Figure 8 , the core rod 1 is a rod-shaped part with a positioning groove. A hexagonal joint 11 is provided at one end of the core rod 1, and its function is to rotate the core rod 1 with an inner hexagonal sleeve when in use. The function of the short limit groove 12 and the long limit groove 16 is to clamp the boss 30 of the positioning block 8 when the core rod 1 is converted to the front position, zero position and rear position to prevent the core rod from rotating. The function of the rear position concession groove 13 and the front position concession groove 15 is to make way for the pin 3 when the core rod 1 moves from the zero position to the rear position or the front position. The function of the rear position positioning groove 17, the front position positioning groove 18 and the zero position positioning groove 19 is to clamp the pin 3 when the core rod 1 is in the rear position, the front position and the zero position. The function of the connecting pin hole 14 is to connect the gun barrel through the connecting pin.

[0078] Reference Fig.13 , the shell 2 is a rectangular part with a support and a central axis hole. The main body of the shell 2 is a rectangular parallelepiped with a square cross-section. The central axis hole 20 is a through hole that penetrates the rectangular parallelepiped. Its function is to assemble the core rod 1. To ensure that the core rod 1 can rotate flexibly, the assembly relationship is a clearance fit. The long hole 21 penetrates from the upper surface of the shell 2 to the central axis hole. The threaded hole 22 is an M6 threaded hole with a depth of 12, which is symmetrically distributed on the boss on the upper surface of the shell 2. The pin shaft hole 23 is located on one side of the shell 2 and penetrates the rectangular body of the shell 2. Its function is to assemble the pin shaft 3, and the assembly relationship is an interference fit. The base 24 fixes the shell 2 on the gun cradle through the slot on the gun cradle.

[0079] Reference Fig.14The pin shaft 3 is a cylinder with a diameter of 10 and a length of 50.

[0080] Reference Fig.15 The adjusting leaf spring 5 is a T-shaped spring with a bend. The hole 25 is used to pass the countersunk screw 4.

[0081] Reference Fig.15 The main leaf spring 6 is a spring leaf with a T-shaped front and a Z-shaped side. The hole 26 is used to pass the countersunk screw 4.

[0082] Reference Fig.17 The pull ring 7 is a spring ring made of spring steel wire with an inner diameter of 24.

[0083] Reference Fig.18 The positioning block 8 is a part with two ends being cylindrical and the middle being a rectangular parallelepiped, and the cross is a "cross" shaped part. A pull ring hole 28 is provided at one end of the cylindrical part, and a limiting boss 29 is provided at the other end.

[0084] Reference Fig.19 The pressing plate 9 is a square block-shaped part, on which two symmetrically distributed countersunk through holes 30 are provided, and it is installed on the boss on the shell 2 by countersunk screws 4.

[0085] Reference Fig. 20 The adjusting gasket 10 is a square sheet-shaped part with two symmetrically distributed through holes, and is installed on the boss on the housing 2 by means of a countersunk screw 4.

[0086] Reference Fig.21 The positioning devices are used in pairs and are symmetrically installed on both sides of the gun barrel.

Claims

1. A gun barrel axial position conversion and positioning device, characterized in that: It comprises a core rod (1), a locator (2), a pin (3), an adjustment leaf spring (5), a main leaf spring (6), a pull ring (7) and a positioning block (8); The inner cavity of the positioner (2) is a hollow cavity, a long hole is opened at one end of the top, and the bottom is connected to a base; a protrusion is provided in the middle, and a threaded hole is opened at the protrusion; a pin hole is also opened in the middle; The core rod (1) is located in the cavity of the positioner (2) for use in conjunction with the core rod, one end of which is provided with a rotating head for facilitating the rotation of the core rod (1), and the other end of which is used to connect to the gun barrel; a short limit groove (12) and a long limit groove (16) are arranged on the side wall of the rod body near the rotating head at 180 degrees along the axis of the rod; The side wall of the core rod (1) is divided into four directions in the circumferential direction: 0°, 90°, 180° and 270°, wherein the same radial direction as the short limit groove is 0°, and the same radial direction as the long limit groove (16) is 180°, then a rear position giving way groove (13) is opened in the 0° direction of the middle side wall of the core rod (1), and a front position giving way groove (15) is opened in the 180° direction, the groove width of the rear position giving way groove (13) is greater than the groove width of the front position giving way groove (15), and in the axial direction, the axial position range of the front position giving way groove (15) covers the front groove wall of the rear position giving way groove (13); a rear position positioning groove (17) and a front position positioning groove (18) are opened in the 90° direction of the middle side wall of the core rod (1), and a zero position positioning groove (19) is opened in the 270° direction, wherein the zero position positioning groove (19) connects the front position giving way groove (15) with the rear position giving way groove (13), and the zero position positioning groove (19) connects the front position giving way groove (15) with the rear position giving way groove (13), and the zero position positioning groove (19) connects the front position giving way groove (15) with the rear position giving way groove (13), and the zero position positioning groove (19) connects the front position giving way groove (15) with the rear position giving way groove (13), and the zero position positioning groove (19) connects the front position giving way groove (15) with the rear position giving way groove (13). The width of the positioning groove (19) is smaller than the width of the front position yielding groove (15); the rear groove wall of the zero position positioning groove (19) and the rear groove wall of the front position yielding groove (15) are at the same axial position; the front groove wall of the zero position positioning groove (19) and the front groove wall of the rear position yielding groove (13) are at the same axial position; the rear position positioning groove (17) is connected to the rear position yielding groove (13); and the rear groove wall of the rear position positioning groove (17) and the rear groove wall of the rear position yielding groove (13) are at the same axial position; the front groove wall of the front position positioning groove (18) and the front groove wall of the front position yielding groove (15) are at the same axial position; the groove widths of the rear position positioning groove (17), the front position positioning groove (18) and the zero position positioning groove (19) are equal, and the groove widths of the rear position positioning groove (17), the front position positioning groove (18) and the zero position positioning groove (19) are equal to the outer diameter of the pin (3); The adjusting leaf spring (5) is a spring leaf with a bend, one end of which is provided with a through hole; The main leaf spring (6) is a spring leaf with a bend, a through hole is opened at one end, and a positioning block hole is opened at the other end; One end of the adjusting leaf spring (5) and the main leaf spring (6) with a through hole is located on the protrusion of the positioner (2), and the other end of the main leaf spring (6) is located at the long hole of the positioner (2). The positioning block (8) passes through the positioning block hole at the other end of the main leaf spring (6) and is connected to the pull ring; The core rod (1) and the locator (2) are unlocked and fixed by means of a locating block (8), and the pin (3) is located at different positions of a rear position locating groove (17), a front position locating groove (18) or a zero position locating groove (19), thereby finally realizing the conversion of the gun body to a rear position, a front position or a zero position.

2. A gun barrel axial position conversion and positioning device as claimed in claim 1, characterized in that: The rotating head at one end of the core rod (1) is a hexagonal joint (11), and the other end is axially provided with a groove, a connecting pin hole (14) is provided on the groove wall, and the axis of the pin hole is perpendicular to the axis of the core rod (1).

3. A gun barrel axial position conversion and positioning device as claimed in claim 1, characterized in that: A pressing plate, an adjusting leaf spring, a main leaf spring and an adjusting gasket are placed in sequence from top to bottom on the raised portion of the outer wall of the positioner (2), and the magnitude of the spring force can be adjusted by increasing or decreasing the number of adjusting leaf springs and adjusting gaskets.

4. A gun barrel axial position conversion and positioning device as claimed in claim 1, characterized in that: The positioning block (8) has a square block in the middle, coaxial columns at both ends, and a pull ring hole at one end; the size of the square block must ensure that it can be located in the long hole of the positioner (2).

5. A gun barrel axial position conversion and positioning device as claimed in claim 4, characterized in that: After the positioning block (8) is inserted into the long hole, the other end is located in the short limit groove of the core rod (1), thereby forming a lock; when unlocking is required, the pull ring is lifted, the positioning block (8) is pulled out of the long hole and rotated at an angle so that the square block is stuck on the outer wall surface of the positioner, thereby completing the unlocking.

6. A conversion and positioning method for the gun barrel axial position conversion and positioning device according to claim 1, characterized in that: The following steps are involved: Step 1: Define the initial state and conversion positioning rules: The initial position is the zero position, at which the zero position positioning groove (19) on the core rod (1) clamps the pin (3); Step 2: Define the conversion positioning rules: When the gun body is converted from the front position to the rear position, it needs to be converted to the zero position first, and then to the rear position; when the gun body is converted from the rear position to the front position, it needs to be converted to the zero position first, and then to the front position. Step 3: This step includes two parts: conversion from zero position to front position, conversion from front position to zero position, conversion from zero position to back position, and conversion from back position to zero position.

7. The method according to claim 6, characterized in that In step 3, the conversion from the zero position to the front position includes the following sub-steps: Step 3.1: Pull the pull ring (7) upward to pull the rectangular part of the positioning block (8) out of the long hole (21) of the positioner (2), and rotate the pull ring (7) 90 degrees so that the lower plane of the rectangular body of the positioning block (8) fits with the upper surface of the positioner (2) to prevent the positioning block (8) from falling into the long hole (21) of the positioner (2) due to the spring force. At this time, the limiting boss (29) of the positioning block (8) is separated from the short limiting groove (12) of the core rod (1); Step 3.2: Rotate the core rod (1) 90 degrees clockwise along the normal direction of the end face of the hexagonal joint (11), then pull the core rod (1) toward the normal direction of the end face of the hexagonal joint (11) so that the front groove wall of the front position yielding groove (15) is in close contact with the cylindrical surface of the pin (3), and then rotate the core rod (1) 90 degrees clockwise along the normal direction of the end face of the hexagonal joint (11), at which time the front positioning groove (18) of the core rod (1) is clamped on the pin (3); Step 3.3: Rotate the pull ring (7) 90 degrees, and the positioning block (8) is pressed back into the long hole (21) by the force of the leaf spring. At this time, the limiting boss (29) of the positioning block (8) is inserted into the long limiting groove (16) of the core rod (1), and the gun is positioned in the front position.

8. The method according to claim 6, characterized in that: In step 3, the conversion from the front position to the zero position includes the following sub-steps: Step 3.1: Pull the pull ring (7) upwards to pull the rectangular part of the positioning block (8) out of the long hole (21) of the positioner (2), and rotate the pull ring (7) 90 degrees so that the lower plane of the rectangular body of the positioning block (8) fits with the upper surface of the positioner (2) to prevent the positioning block (8) from falling into the long hole (21) of the positioner (2) due to the spring force. At this time, the limiting boss (29) of the positioning block (8) is separated from the long limiting groove (16) of the core rod (1); Step 3.2: Rotate the core rod (1) counterclockwise by 90 degrees along the normal direction of the end face of the hexagonal joint (11), then pull the core rod (1) in the opposite direction of the normal direction of the end face of the hexagonal joint (11) so that the rear groove wall of the front position giving way groove (15) is closely attached to the cylindrical surface of the pin (3), and then rotate the core rod (1) counterclockwise by 90 degrees along the normal direction of the end face of the hexagonal joint (11). At this time, the zero position positioning groove (19) of the core rod (1) is clamped on the pin (3); Step 3.3: Rotate the pull ring (7) 90 degrees, and the positioning block (8) is pressed back into the long hole (21) by the force of the leaf spring. At this time, the limiting boss (29) of the positioning block (8) is inserted into the short limiting groove (12) of the core rod (1), and the gun is positioned at the zero position.

9. The method according to claim 6, characterized in that: In step 3, the conversion from the zero position to the rear position includes the following sub-steps: Step 3.1: Pull the pull ring (7) upward to pull the rectangular part of the positioning block (8) out of the long hole (21) of the positioner (2), and rotate the pull ring (7) 90 degrees so that the lower plane of the rectangular body of the positioning block (8) fits with the upper surface of the positioner (2) to prevent the positioning block (8) from falling into the long hole (21) of the positioner (2) due to the spring force. At this time, the limiting boss (29) of the positioning block (8) is separated from the short limiting groove (12) of the core rod (1); Step 3.2: Rotate the core rod (1) counterclockwise by 90 degrees along the normal direction of the end face of the hexagonal joint (11), then pull the core rod (1) in the opposite direction of the normal direction of the end face of the hexagonal joint (11) so that the rear groove wall of the rear accommodating groove (13) is in close contact with the cylindrical surface of the pin (3), and then rotate the core rod (1) counterclockwise by 90 degrees along the normal direction of the end face of the hexagonal joint (11), at which time the rear locating groove (17) of the core rod (1) is clamped on the pin (3); Step 3.3: Rotate the pull ring (7) 90 degrees, and the positioning block (8) is pressed back into the long hole (21) by the force of the leaf spring. At this time, the limiting boss (29) of the positioning block (8) is inserted into the long limiting groove (16) of the core rod (1), and the gun is positioned in the rear position.

10. The method according to claim 6, characterized in that: In step 3, the conversion from the rear position to the zero position includes the following sub-steps: Step 3.1: Pull the pull ring (7) upwards to pull the rectangular part of the positioning block (8) out of the long hole (21) of the positioner (2), and rotate the pull ring (7) 90 degrees so that the lower plane of the rectangular body of the positioning block (8) fits with the upper surface of the positioner (2) to prevent the positioning block (8) from falling into the long hole (21) of the positioner (2) due to the spring force. At this time, the limiting boss (29) of the positioning block (8) is separated from the long limiting groove (16) of the core rod (1); Step 3.2: Rotate the core rod (1) 90 degrees clockwise along the normal direction of the end face of the hexagonal joint (11), then pull the core rod (1) toward the normal direction of the end face of the hexagonal joint (11) so that the front groove wall of the rear clearance groove (13) is in close contact with the cylindrical surface of the pin (3), and then rotate the core rod (1) 90 degrees clockwise along the normal direction of the end face of the hexagonal joint (11). At this time, the zero-position positioning groove (19) of the core rod (1) is clamped on the pin (3); Step 3.3: Rotate the pull ring (7) 90 degrees, and the positioning block (8) is pressed back into the long hole (21) by the force of the leaf spring. At this time, the limiting boss (29) of the positioning block (8) is inserted into the short limiting groove (12) of the core rod (1), and the gun is positioned at the zero position.

Images