Method and structure for adjusting directions of gun barrels of multi-barrel weapon

Abstract

The invention discloses a method and a structure for adjusting the direction of a gun barrel of a multi-barrel weapon, which are simple in structure and convenient to adjust and use. Comprising a middle rod and a frame body, the middle rod is fixedly sleeved with the frame body, a plurality of gun barrel holes are formed in the frame body, a gun barrel is arranged in each gun barrel hole in a matched mode, and three adjusting block assemblies are evenly installed on the hole wall of each gun barrel hole in the circumferential direction; the adjusting block assembly comprises a screw rod, a static sliding block, a pressing block and a movable sliding block, the static sliding block is sequentially sleeved with the static sliding block, the static sliding block is fixedly connected with the screw rod, the movable sliding block is in sliding fit with the screw rod, an adjusting nut is arranged on the screw rod in a matched mode, the plane of the movable sliding block is pressed by the adjusting nut, and an inner hole of the pressing block is a kidney-shaped through hole so that the position of the pressing block can be adjusted in the radial direction. The two ends of the pressing block are inclined faces, the pressing block is in matched contact with the static sliding block and the movable sliding block through the inclined faces, and the inner side end face of the pressing block is used for making contact with the gun barrel so that the gun barrel can move towards the circle center of the gun barrel hole in the radial direction of the gun barrel hole.

Description

Technical Field

[0001] This invention relates to the field of multi-barrel weapon technology, and in particular to a method and structure for adjusting the pointing of a multi-barrel weapon barrel. Background Technology

[0002] Existing multi-barreled weapon barrels were not designed with adjustable positioning in mind. The barrels are fixed in place, and their positioning is ensured by the machining precision of the assembly components. However, due to machining errors, the parallelism and position of the barrels may not meet the design ideal, potentially leading to inconsistent barrel pointing and ultimately affecting the weapon's accuracy. While the accuracy may be satisfactory at close range, at long distances, the negative impact of the barrels not being parallel to the aiming direction is amplified dramatically, resulting in abnormally large dispersion and making it ineffective at engaging distant targets. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a method and structure for adjusting the pointing of a multi-barrel weapon barrel. The structure is practical and simple in principle, easy to adjust and use, and highly usable.

[0004] The objective of this invention is achieved as follows: A structure for adjusting the pointing of a multi-barrel weapon includes a central rod and a frame. The frame is fixed on the central rod. The frame has multiple barrel holes along its circumference, and each barrel hole is fitted with a barrel. The axis of the central rod serves as the rotation center of the barrel. An adjustment gap is left between the barrel hole and the corresponding barrel. Three adjustment block assemblies are evenly installed along the circumference of the wall of the barrel hole. The adjusting block assembly includes a screw, a stationary slider, a pressure block, and a movable slider. The screw has a smooth section and a threaded section. The stationary slider, pressure block, and movable slider are sequentially fitted onto the smooth section of the stationary slider. The stationary slider is fixedly connected to the screw, and the movable slider is slidably engaged with the screw. An adjusting nut is fitted onto the threaded section of the screw. The outer end of the movable slider has a flat surface, which is pressed down by the adjusting nut. The inner hole of the pressure block is an oblong through hole, allowing the pressure block to be adjusted radially. The cross-section of the pressure block is an isosceles trapezoid that is narrower at the outside and wider at the inside. Both ends of the pressure block are inclined surfaces. The inner end shapes of the stationary slider and the movable slider correspond to the two ends of the pressure block. The pressure block contacts the stationary slider and the movable slider through an inclined surface engagement. The inner end face of the pressure block is used to contact the barrel, causing the barrel to move radially towards the center of the barrel hole.

[0005] Preferably, three trapezoidal grooves are evenly provided circumferentially on the wall of the barrel hole, and an adjustment block assembly is installed in each trapezoidal groove. The cross-sectional shape of the stationary slider corresponds to the shape of the trapezoidal groove. The trapezoidal groove is wider at the outside and narrower at the inside. The trapezoidal groove forms a radial limit on the adjustment block assembly. The stationary slider is fixed to the frame body by threaded fasteners.

[0006] Preferably, the outer circumferential surface of the adjusting nut is provided with multiple concave surfaces, which are evenly distributed along the circumference of the adjusting nut. The outer end of the movable slider is provided with a blind hole along the axial direction. The blind hole is provided with a limiting pin spring and a limiting pin. The limiting pin is provided with a strip groove, and an open elastic pin is fitted in the strip groove. The open elastic pin is fixed on the movable slider and is used to limit the stroke range of the limiting pin. Under the elastic force of the limiting pin spring, the end of the limiting pin is inserted into a concave surface, forming a circumferential positioning of the adjusting nut. The limiting pin can be pressed into the blind hole on the movable slider.

[0007] Preferably, the outer circumferential surface of the adjusting nut has 12 continuous concave surfaces along the circumferential direction, and the minimum rotation angle of the adjusting nut during adjustment is 30 degrees.

[0008] Preferably, the outer end of the adjusting nut is hexagonal in shape.

[0009] Preferably, the two ends of the pressure block are inclined surfaces at a 45-degree angle.

[0010] An adjustment method based on a structure for adjusting the pointing of a multi-barrel weapon barrel. First, select any barrel and insert the laser gun calibrator into it. Set the target paper at the maximum working distance L of the laser gun calibrator. Rotate the multi-barrel weapon, and the red target point of the laser gun calibrator will rotate accordingly. Record the position of the target point in real time. When a complete circle is obtained, determine the rotation center O of the multi-barrel weapon on the target paper. Then, based on the barrel's radius of rotation R, draw a plumb line segment OB of length r on the target paper, starting from point O (i.e., a downward line). Finally, with point B as the target point, insert a cold sight into the barrel and adjust the three sets of adjustment blocks on the barrel to make the center of the cold sight coincide with the target point B. Repeat the above steps with the next barrel until all barrels have been adjusted.

[0011] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: This invention allows for the application or installation of the adjustment mechanism and method without altering the original barrel structure, adjusting the axial direction of each barrel to a predetermined direction, correcting discrete ballistics at long distances, and enabling multi-barrel weapons to achieve better shooting accuracy at greater distances.

[0012] With a simple structure and low cost, this design involves adding a frame to the rotation center of the original multi-barrel weapon to house the adjustment mechanism. Three sets of evenly distributed adjustment blocks are designed for each barrel, allowing for adjustable positioning of each barrel within a small range. The adjustment block assembly is wedge-shaped, using an inclined surface to convert axial compression adjustment into radial movement that compresses the barrel. To prevent loosening of the barrel position, a concave surface is designed on the side cylindrical surface of the adjusting nut, which, through its engagement with a limiting pin, restricts the rotation of the adjusting nut, thus preventing the adjustment mechanism from becoming loose. Through specific usage methods, the pointing of the barrels can be adjusted, making the barrel axes parallel to each other or converging into a cone, improving shooting accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention after assembly; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the adjustment block assembly structure of the present invention. Figure 4 This is a schematic diagram of the anti-loosening structure of the present invention. Figure 5 This is a schematic diagram showing the position of the adjustment block assembly before and after operation according to the present invention.

[0014] Figure Labels In the attached drawings: 1-Intermediate rod, 2-Frame body, 3-Adjusting block assembly; 2-1 Gun barrel hole, 2-2 Trapezoidal groove, 2-3 Threaded hole, 3-1 Screw, 3-2 Static slider, 3-3 Pressure block, 3-4 Moving slider, 3-5 Limiting pin spring, 3-6 Limiting pin, 3-7 Adjusting nut, 3-8 Concave surface, 3-9 Through hole, 3-10 Oval through hole, 3-11 Inclined surface, 3-12 Flat surface, 3-13 Inner end face, 3-14 Open elastic pin. Detailed Implementation

[0015] The embodiments of the invention will now be described in further detail with reference to the accompanying drawings.

[0016] like Figure 1 The method and structure for adjusting the pointing of a multi-barrel weapon barrel shown are as follows: the mechanism consists of: a middle rod 1, a frame body 2, and an adjusting block assembly 3; wherein the adjusting block assembly 3 includes a screw 3-1, a stationary slider 3-2, a pressure block 3-3, a moving slider 3-4, a limit pin spring 3-5, a limit pin 3-6, and an adjusting nut 3-7.

[0017] like Figure 1 , 2As shown, there are three barrels, with the central rod 1 serving as the theoretical center of rotation for the barrels. The three barrels are evenly distributed on this rotation circle. The frame 2 is a cylindrical structure, fixed to the central rod 1 by a cylindrical pin. On the same rotation circle, three barrel holes 2-1, slightly larger than the outer diameter of the barrels, are evenly distributed on the frame, through which the three barrels pass.

[0018] like Figure 2 As shown, three trapezoidal grooves 2-2 are evenly distributed along the circumference of a single barrel hole to hold three sets of adjusting block assemblies 3, preventing them from falling off during installation. The adjusting block assembly 3 is fixed to the frame body 2 through threaded holes 2-3 and standard screws.

[0019] like Figure 1 , 3 As shown, the contact surfaces of the pressure block 3-3 with the stationary slider 3-2 and the moving slider 3-4 are all inclined surfaces 3-11. The moving slider can reciprocate along the axial direction of the screw 3-1. The adjusting nut 3-7 can be rotated around the screw to tighten or loosen, and moves along the axial direction of the screw. When the adjusting nut is tightened, the nut plane presses against the plane 3-12 of the moving slider. The stationary slider remains relatively stationary, while the moving slider can press against the pressure block in the axial direction with the inclined surface at its other end. Under the action of the inclined surfaces of the moving and stationary sliders, the pressure block moves radially towards the center of the barrel hole 2-1, thereby forcing the barrel to make micro-movements in the same direction. A cylindrical through hole 3-10 is designed in the middle of the pressure block to facilitate its displacement and prevent it from falling off when assembling the adjusting block assembly 3.

[0020] like Figure 3 , 4 As shown, after the adjustment block assembly 3 is assembled, a through hole 3-9 is drilled and a standard open elastic pin is inserted to restrict the relative rotation between the screw 3-1 and the stationary slider 3-2.

[0021] like Figure 4 As shown, a limit pin spring 3-5 and a limit pin 3-6 are installed on the side of the movable slider 3-4, and an open elastic pin 3-14 restricts the axial displacement of the limit pin. The head of the limit pin is embedded in the concave surface 3-8 of the adjusting nut. During adjustment, the limit pin can be manually pressed and rotated at a certain angle to release it, allowing the limit pin to fall back into the concave surface of the adjusting nut, thus restricting the rotation of the adjusting nut and achieving the purpose of preventing loosening.

[0022] like Figure 1 , 5 As shown, when the movable slider 3-4 moves to the left axial direction, the pressure block 3-3 produces a downward displacement, and the inner end face 3-13 of the pressure block presses against the gun barrel, causing it to deflect.

[0023] The ends of adjusting nuts 3-7 are designed in an external hexagonal shape, which can be used with standard tools for adjustment.

[0024] The adjusting nut can rotate around the screw and move axially along the screw. When the adjusting nut is tightened, the nut compresses the moving slider, which in turn compresses the pressure block in the axial direction. Under the action of the inclined surfaces of the moving and stationary sliders, the pressure block moves radially towards the center of the barrel hole, thus forcing the barrel to make slight movements in the same direction. Similarly, three sets of adjusting mechanism components evenly arranged on a barrel hole can adjust the barrel position in the same way. When used in combination, the barrel can be adjusted to any position within a small range. To prevent the moving slider from loosening after position adjustment, the cylindrical surface of the adjusting nut is designed as a corrugated surface. With the use of a limit pin and a limit pin spring, the limit pin can engage in the corrugated concave surface after each rotation of a certain angle, restricting the rotation of the adjusting nut and thus preventing the moving slider from loosening.

[0025] During adjustment, first fix one of the barrels arbitrarily and insert the laser sight into that barrel. Set a target at the maximum working distance L of the laser sight. Rotate the multi-barrel weapon; the red target point on the laser sight will rotate accordingly. Record the position of the target point immediately. Once a complete circle is obtained, the rotation center O of the multi-barrel weapon can be determined on the target paper. Then, based on the barrel rotation radius R (at a distance L from the muzzle), draw a plumb line segment OB of the desired length r on the target paper, starting from point O. Finally, with point B as the target point, insert a cold sight into the barrel. Adjust the three sets of adjustment block assemblies 3 of each barrel until the center of the cold sight coincides with the target point B. After adjustment, replace the barrel with the next one and repeat the above operation until all barrels are adjusted. After all barrels are adjusted, rotate the barrels with the cold sight inserted one by one and check the alignment of the cold sight center with the target point B again. If there is a deviation, continue adjusting until the requirement is met.

[0026] The point B found by the plumb line segment OB, compared to setting the target point at the firing position of each barrel and adjusting multiple barrels using a single point B as a reference, can effectively reduce adjustment errors. After adjusting all barrels, the radius of rotation obtained at point L when multiple barrels rotate is r.

[0027] It should be noted that when the length r of the plumb line segment OB is equal to the barrel's radius of rotation R, meaning the adjusted barrels are parallel, the ballistic trajectory is also relatively parallel. However, in practice, as the firing distance increases, the ballistic dispersion will increase accordingly, potentially failing to hit small targets at long range. When the length r of the plumb line segment OB is less than the barrel's radius of rotation R, the adjusted barrel axes become the generatrices of a cone, and the barrel axes will converge at a point at a long distance. In this case, the conical distribution between the barrels helps reduce the dispersion of multi-barrel weapons at long range, improving firing accuracy and increasing the hit rate. Generally, based on actual needs, r is taken to be less than R, and the specific value of r is adapted to the actual application.

[0028] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A structure for adjusting the pointing of the barrels of a multi-barreled weapon, characterized by: The application relates to a structure for adjusting the pointing direction of the barrels of a multi-barrel weapon, which comprises an intermediate rod and a frame body, the frame body is sleeved on the intermediate rod and fixed, a plurality of barrel holes are arranged on the frame body in the circumferential direction, each barrel hole is matched with a barrel, the axis line of the intermediate rod serves as the rotation center of the barrels, an adjusting gap is left between the barrel hole and the corresponding barrel, and three adjusting block assemblies are uniformly arranged on the hole wall of the barrel hole in the circumferential direction. The adjusting block assembly comprises a screw rod, a static sliding block, a pressing block and a dynamic sliding block, the screw rod has a smooth rod section and a threaded section, the static sliding block, the pressing block and the dynamic sliding block are sequentially sleeved on the smooth rod section of the static sliding block, the static sliding block is fixedly connected with the screw rod, the dynamic sliding block is in sliding connection with the screw rod, an adjusting nut is matched with the threaded section of the screw rod, the outer end of the dynamic sliding block is provided with a plane, the plane is pressed by the adjusting nut, the inner hole of the pressing block is a waist-round through hole, so that the position of the pressing block can be adjusted in the radial direction, the two ends of the pressing block are bevels, the inner side ends of the static sliding block and the dynamic sliding block are shaped in correspondence with the two ends of the pressing block, the pressing block is in contact with the static sliding block and the dynamic sliding block through the bevels, and the inner side end surface of the pressing block is used for being in contact with the barrel, so that the barrel moves along the radial direction of the barrel hole to the center of the barrel hole.

2. The structure for adjusting the pointing of the barrel of a multi-barrel weapon according to claim 1, characterized in that: Three trapezoidal grooves are uniformly arranged on the hole wall of the barrel hole in the circumferential direction, one adjusting block assembly is arranged in each trapezoidal groove, the cross section shape of the static sliding block corresponds to the shape of the trapezoidal groove, the trapezoidal groove limits the adjusting block assembly in the radial direction, and the static sliding block is fixedly connected with the frame body through a threaded fastener.

3. The structure for adjusting the pointing of the barrel of a multi-barrel weapon according to claim 1, characterized in that: A plurality of concaves are arranged on the outer circumferential surface of the adjusting nut and are uniformly distributed in the circumferential direction of the adjusting nut, the outer end of the dynamic sliding block is provided with a mounting blind hole in the axial direction, the mounting blind hole is provided with a limiting pin spring and a limiting pin, a strip-shaped groove is arranged on the limiting pin, an open elastic pin is matched with the strip-shaped groove, the open elastic pin is fixed on the dynamic sliding block, the open elastic pin is used for limiting the stroke range of the limiting pin, under the elastic force of the limiting pin spring, the end of the limiting pin is inserted into one concave, thereby forming the circumferential positioning of the adjusting nut, and the limiting pin can be pressed into the mounting blind hole on the dynamic sliding block.

4. The structure for adjusting the pointing of the barrel of a multi-barrel weapon according to claim 3, characterized in that: The outer circumferential surface of the adjusting nut is provided with 12 continuous concaves in the circumferential direction, and the minimum rotation angle of the adjusting nut is 30 degrees during adjustment.

5. The structure for adjusting the pointing of the barrel of a multi-barrel weapon according to claim 1, characterized in that: The outer end of the adjusting nut is in the shape of an outer hexagon.

6. The structure for adjusting the pointing of the barrel of a multi-barrel weapon according to claim 1, characterized in that: The two ends of the pressing block are bevels with a 45-degree inclination angle.

7. An adjusting method for the structure for adjusting the pointing direction of the barrels of a multi-barrel weapon based on the structure of claim 1, characterized in that: firstly, an arbitrary barrel is selected, a laser gun calibration instrument is inserted into the barrel, a target paper is arranged at the maximum working distance L of the laser gun calibration instrument, the multi-barrel weapon is rotated, the red target point of the laser gun calibration instrument is rotated, the position of the target point is recorded in real time, when a complete circle is obtained, the rotation center O point of the multi-barrel weapon is determined on the target paper; then, according to the barrel rotation radius R, a plumb line segment OB with a length of r is drawn on the target paper with the O point as the starting point according to the requirement; finally, the laser gun calibration instrument is removed, a cold sighting mirror is inserted into the barrel, and the three adjusting block assemblies of the barrel are adjusted, so that the center of the cold sighting mirror is coincided with the target point B; the above operation is repeated for another barrel until the adjustment of all barrels is completed.

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