A kind of vehicle-mounted machine gun high-low step locking compensation correction structure and method

Abstract

The application discloses a kind of vehicle-mounted machine gun high-low direction step locking compensation correction structure and method, after high-low direction step reliable locking, it can carry out stepless compensation correction.It includes bracket body, hand wheel assembly, the outer wall of one side of bracket body is fixed with connecting disc, the hand wheel connecting sleeve is rotatably supported on the connecting disc, hand wheel assembly has hand wheel assembly shaft, hand wheel handle, lock tongue, connecting disc is equipped with connecting disc inner tube, hand wheel assembly shaft is rotatably supported in connecting disc inner tube, the wall surface of hand wheel connecting sleeve is provided with tooth slot along the circumference, and lock tongue is positioned by being embedded in tooth slot;The bottom of hand wheel connecting sleeve is equipped with hinged lug, the high-low direction connecting shaft is rotatably matched on hinged lug, the high-low direction connecting shaft is equipped with high-low direction connecting shaft working surface, and it further includes high-low direction screw rod, one end of high-low direction screw rod is equipped with high-low direction screw rod waist type slot, high-low direction screw rod waist type slot is sleeved on high-low direction connecting shaft working surface, and the other end of high-low direction screw rod is provided with high-low direction fine adjustment handle.

Description

Technical Field

[0001] This invention relates to the field of light weapons technology, and in particular to a height-gradient locking compensation correction structure and method for a vehicle-mounted machine gun. Background Technology

[0002] With the rapid evolution of modern warfare, the speed of firepower mobility on the battlefield largely determines the outcome of battles. Whether engaging low-altitude, slow-moving, and small targets or armored targets, machine guns need to fire and destroy them immediately and quickly change positions to avoid enemy rocket and artillery fire. Therefore, the era of traditional machine gun repositioning relying on shoulder-mounted or hunchbacked weapons is over; vehicle-mounted machine guns have become an indispensable strategic and tactical element of the modern battlefield. While vehicle-mounted machine guns possess firepower mobility, they also need to be accurate and powerful. However, because the current vehicle-mounted machine gun mounts in service with the military imitate the structure of traditional Warsaw Pact standard equipment, elevation is achieved through gear and toothed transmission. When the handle on the handwheel assembly is turned and the muzzle is aimed at the target, the handle must be released. Reliable elevation positioning is achieved by inserting a slightly tapered locking tongue into the corresponding toothed groove on the handwheel connecting sleeve. Because the teeth on the handwheel connecting sleeve are always graduated regardless of their size, when the target is positioned between two teeth, the locking tongue cannot reliably engage. In this situation, it is necessary to slightly rotate the handwheel handle in both directions to deviate the actual aiming point from the ideal aiming point, thus forcing a reliable elevation position. This results in the actual aiming point being either higher or lower than the target aiming point, severely impacting the accuracy of the vehicle-mounted machine gun. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a height-to-depth stepped locking compensation correction structure and method for vehicle-mounted machine guns. After reliable height-to-depth step locking, if the aiming point deviates, stepless compensation correction can be performed, and the aiming point can be accurately locked.

[0004] The objective of this invention is achieved as follows:

[0005] A vehicle-mounted machine gun elevation-gradient locking compensation correction structure includes a bracket body (1) and a handwheel assembly (4). The bracket body (1) is U-shaped, and the machine gun is hinged between the two walls of the bracket body (1).

[0006] A connecting plate (3) is fixed on one side of the outer wall of the bracket body (1). A handwheel connecting sleeve (2) is rotatably supported on the connecting plate (3). The handwheel assembly (4) has a handwheel assembly shaft (104), a handwheel handle (12), and a locking tongue (13). The center of the connecting plate (3) is provided with a connecting plate inner tube (103). The handwheel assembly shaft (104) is rotatably supported in the connecting plate inner tube (103). The end of the handwheel assembly shaft (104) is provided with a drive tooth. The drive tooth is used to drive the machine gun to rotate in the high and low directions. Several tooth grooves (101) are provided along the circumferential direction on the wall surface of the handwheel connecting sleeve (2). The locking tongue (13) is used to be embedded in a tooth groove (101) for positioning, so as to achieve high and low step locking. Rotating the handwheel handle (12) can drive the locking tongue (13) to rotate around the handwheel assembly shaft (104), so as to roughly align the aiming point with the shooting target.

[0007] The bottom of the handwheel connecting sleeve (2) is provided with a hinged lug, on which a high-low direction connecting shaft (5) is rotatably fitted. The high-low direction connecting shaft (5) is provided with a high-low direction connecting shaft working surface (202), and also includes a high-low direction screw (6). One end of the high-low direction screw (6) is provided with a high-low direction screw waist-shaped groove (201). The high-low direction screw waist-shaped groove (201) is fitted on the high-low direction connecting shaft working surface (202) to compensate for the damage caused by the handwheel connecting sleeve (2) driving the hinged lug during rotation. The vertical height difference, the other end of the high and low direction screw (6) is threaded with a high and low direction fine adjustment handle (9), the outer peripheral surface of the high and low direction fine adjustment handle (9) is stepped shaft-shaped, the bottom of the bracket body (1) is provided with a mounting seat, the small diameter section of the high and low direction fine adjustment handle (9) is fitted in the mounting seat, the end of the small diameter section of the high and low direction fine adjustment handle (9) is threaded with a tightening nut (7), the tightening nut (7) and the stepped surface of the high and low direction fine adjustment handle (9) form an axial positioning of the high and low direction fine adjustment handle (9).

[0008] The drive gear is used to drive the machine gun to rotate in both vertical and horizontal directions, and the transmission mechanism is a gear transmission mechanism.

[0009] Preferably, the bottom of the handwheel connecting sleeve (2) is provided with a pair of hinged lugs, and the working surface (202) of the high and low direction connecting shaft is located between the pair of hinged lugs.

[0010] Preferably, the high-low direction screw (6) and the high-low direction fine adjustment handle (9) are threaded together by a trapezoidal thread with a self-locking function.

[0011] Preferably, the handwheel assembly (4) has a housing, the handwheel connecting sleeve (2) and the housing of the handwheel assembly (4) are positioned with a clearance fit and can rotate relative to each other, the handwheel assembly shaft (104) is located at the center of the housing of the handwheel assembly (4), and the locking tongue (13) is installed on the housing of the handwheel assembly (4).

[0012] Preferably, the latch (13) is elastic and can elastically deform and change position; or, a spring is provided so that the latch (13) can elastically extend and retract.

[0013] Preferably, an anti-rotation retaining ring (8) is provided between the tightening nut (7) and the mounting base. The anti-rotation retaining ring (8) is fitted onto the small diameter section of the height adjustment handle (9). An axial positioning groove is provided on the small diameter section of the height adjustment handle (9). A boss is provided on the inner circumferential surface of the anti-rotation retaining ring (8) and slides in cooperation with the axial positioning groove. Several tightening nut grooves (401) are provided on the tightening nut (7) along the circumferential direction. An anti-rotation retaining ring tooth (402) is provided on the outer circumferential surface of the anti-rotation retaining ring (8). The anti-rotation retaining ring tooth (402) is inclined and extends into a tightening nut groove (401) for positioning, thereby realizing the circumferential positioning of the tightening nut (7) and the height adjustment handle (9).

[0014] Preferably, a backlash-eliminating nut (11) is threaded onto the high-low direction screw (6). The outer circumferential surface of the backlash-eliminating nut (11) is stepped and shaft-shaped. The high-low direction fine-tuning handle (9) is provided with a clearance inner hole. The small diameter section of the backlash-eliminating nut (11) extends into the clearance inner hole of the high-low direction fine-tuning handle (9). Under the tightening action, the backlash-eliminating nut (11) eliminates the gap between the high-low direction screw (6) and the high-low direction fine-tuning handle (9).

[0015] Preferably, the small diameter section of the gap-free nut (11) is fitted with an anti-rotation plate (10), and the small diameter section of the gap-free nut (11) is provided with an axial groove. The inner circumferential surface of the anti-rotation plate (10) is provided with a boss that cooperates with the axial groove. The tail end of the height-lowering fine-tuning handle (9) is provided with several height-lowering fine-tuning handle slots (502) along the circumferential direction. The outer circumferential surface of the anti-rotation plate (10) is provided with an anti-rotation plate tooth (501). The anti-rotation plate tooth (501) is inclined and extends into a height-lowering fine-tuning handle slot (502) for positioning, thereby realizing the circumferential positioning of the gap-free nut (11) and the height-lowering fine-tuning handle (9).

[0016] A compensation correction method based on the elevation-lowering stepped locking compensation correction structure of a vehicle-mounted machine gun is provided. After the machine gun achieves elevation-lowering stepped locking, the elevation-lowering fine adjustment handle (9) is rotated forward or in the opposite direction to drive the elevation-lowering screw (6) to rotate. The elevation-lowering screw (6) simultaneously generates axial movement, which drives the elevation-lowering connecting shaft (5) to move, thereby driving the handwheel connecting sleeve (2) to rotate around the connecting plate (3), and then causing the handwheel assembly (4) to rotate relative to the bracket body, thereby realizing the compensation correction of the firing aiming point of the vehicle-mounted machine gun after elevation-lowering stepped locking.

[0017] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0018] This invention overcomes the shortcomings of vehicle-mounted machine guns in the field of light weapons, where there are differences in the aiming point position after the elevation is locked in a stepped manner. It realizes the transformation from stepped locking in elevation to stepless compensation correction and precise locking of the aiming point. It is simple to operate, convenient, and reliable in positioning. Attached Figure Description

[0019] Figure 1 This is an assembly diagram of the present invention.

[0020] Figure 2 This is a schematic diagram of the component structure of the present invention.

[0021] Figure 3 This is a schematic diagram of the installation of a trapezoidal screw with varying heights.

[0022] Figure 4 A schematic diagram illustrating the operation of the anti-rotating card ring.

[0023] Figure 5 A schematic diagram to prevent the film from rotating.

[0024] Figure Labels

[0025] In the attached diagram: 1. Bracket body, 2. Handwheel connecting sleeve, 3. Connecting plate, 4. Handwheel assembly, 5. Height-lowering connecting shaft, 6. Height-lowering trapezoidal screw, 7. Tightening nut, 8. Anti-rotation retaining ring, 9. Height-lowering fine-tuning handle, 10. Anti-rotation plate, 11. Backlash-eliminating nut, 12. Handwheel handle, 13. Locking tongue, 101. Handwheel connecting sleeve tooth groove, 102. Locking tongue front section, 103. Connecting plate inner tube, 104. Handwheel assembly shaft, 201. Height-lowering trapezoidal screw waist-shaped groove, 202. Height-lowering connecting shaft working surface, 401. Tightening nut retaining groove, 402. Anti-rotation retaining ring tooth, 501. Anti-rotation plate tooth, 502. Height-lowering fine-tuning handle retaining groove. Detailed Implementation

[0026] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1-5 As shown, the handwheel connecting sleeve 2 is positioned on the bracket body 1 through the connecting plate 3. The handwheel connecting sleeve 2 can rotate around the connecting plate 3. The handwheel assembly 4 is mounted on the inner tube 103 of the connecting plate through the handwheel assembly shaft 104. Rotating the handwheel handle 12 allows the aiming point to be roughly aligned with the shooting target. At the same time, the front part 102 of the locking tongue acts on the tooth groove 101 to achieve stepped locking in the high and low directions.

[0028] The handwheel connecting sleeve 2 is connected to the high / low direction trapezoidal screw 6 via the high / low direction connecting shaft 5. The front end of the high / low direction trapezoidal screw 6 has a high / low direction trapezoidal screw waist groove 201 that interacts with the high / low direction connecting shaft working surface 202 on the high / low direction connecting shaft 5 to compensate for the vertical height difference generated during the rotation of the handwheel connecting sleeve 2. The high / low direction trapezoidal screw 6 is connected to the high / low direction fine-tuning handle 9 via a trapezoidal thread with a self-locking function. The gap is eliminated by the tightening action of the gap-eliminating nut 11, and then the anti-rotation is fixed by the anti-rotation plate teeth 501 on the anti-rotation plate 10 acting on the high / low direction fine-tuning handle groove 502 on the end face of the high / low direction fine-tuning handle 9. The axial gap between the high / low direction fine-tuning handle 9 and the bracket body 1 is eliminated by the tightening action of the tightening nut 7, and then the anti-rotation is fixed by the anti-rotation ring teeth 402 on the circumference of the anti-rotation ring 8 acting on the tightening nut groove 401 on the cross-section of the tightening nut 7. After the elevation and depression levels are locked, rotating the elevation and depression fine-tuning handle 9 in either the forward or reverse direction drives the elevation and depression trapezoidal screw 6 to rotate. Under the axial movement of the elevation and depression trapezoidal screw 6, the elevation and depression connecting shaft 5 moves up or down, thereby causing the handwheel connecting sleeve 2 to rotate around the connecting plate 3. This causes the handwheel assembly 4 to rotate relative to the bracket body, thus realizing the compensation and correction of the firing aiming point of the vehicle-mounted machine gun after the elevation and depression levels are locked.

[0029] 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 vehicle-mounted machine gun elevation-lowering stepped locking compensation correction structure, characterized in that: Includes a bracket body (1) and a handwheel assembly (4). The bracket body (1) is U-shaped, and the machine gun is hinged between the two walls of the bracket body (1). A connecting plate (3) is fixed on one side of the outer wall of the bracket body (1). A handwheel connecting sleeve (2) is rotatably supported on the connecting plate (3). The handwheel assembly (4) has a handwheel assembly shaft (104), a handwheel handle (12), and a locking tongue (13). The center of the connecting plate (3) is provided with a connecting plate inner tube (103). The handwheel assembly shaft (104) is rotatably supported in the connecting plate inner tube (103). The end of the handwheel assembly shaft (104) is provided with a drive tooth. The drive tooth is used to drive the machine gun to rotate in the high and low direction. Several tooth grooves (101) are provided along the circumferential direction on the wall surface of the handwheel connecting sleeve (2). The locking tongue (13) is used to be embedded in a tooth groove (101) for positioning, so as to achieve high and low step locking. Rotating the handwheel handle (12) can drive the locking tongue (13) to rotate around the handwheel assembly shaft (104) to achieve the aiming point roughly aligned with the shooting target. The bottom of the handwheel connecting sleeve (2) is provided with a hinged lug, and a high-low direction connecting shaft (5) is rotatably fitted on the hinged lug. The high-low direction connecting shaft (5) is provided with a high-low direction connecting shaft working surface (202), and also includes a high-low direction screw (6). One end of the high-low direction screw (6) is provided with a high-low direction screw waist-shaped groove (201). The high-low direction screw waist-shaped groove (201) is fitted on the high-low direction connecting shaft working surface (202) to compensate for the damage caused by the handwheel connecting sleeve (2) driving the hinged lug during rotation. The vertical height difference, the other end of the high and low direction screw (6) is threaded with a high and low direction fine adjustment handle (9), the outer peripheral surface of the high and low direction fine adjustment handle (9) is in the shape of a stepped shaft, the bottom of the bracket body (1) is provided with a mounting seat, the small diameter section of the high and low direction fine adjustment handle (9) is fitted in the mounting seat, the end of the small diameter section of the high and low direction fine adjustment handle (9) is threaded with a tightening nut (7), the tightening nut (7) and the stepped surface of the high and low direction fine adjustment handle (9) form an axial positioning of the high and low direction fine adjustment handle (9).

2. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 1, characterized in that: The bottom of the handwheel connecting sleeve (2) is provided with a pair of hinged lugs, and the working surface (202) of the high and low direction connecting shaft is located between the pair of hinged lugs.

3. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 1, characterized in that: The high-low direction screw (6) and the high-low direction fine adjustment handle (9) are threaded together by a trapezoidal thread with self-locking function.

4. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 1, characterized in that: The handwheel assembly (4) has a housing, and the handwheel connecting sleeve (2) and the handwheel assembly (4) housing are positioned with a clearance fit and can rotate relative to each other. The handwheel assembly shaft (104) is located at the center of the handwheel assembly (4) housing, and the locking tongue (13) is installed on the handwheel assembly (4) housing.

5. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 4, characterized in that: The latch (13) is elastic and can elastically deform and change position.

6. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 4, characterized in that: A spring is provided to allow the locking tongue (13) to elastically extend and retract.

7. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 1, characterized in that: An anti-rotation retaining ring (8) is provided between the tightening nut (7) and the mounting base. The anti-rotation retaining ring (8) is fitted onto the small diameter section of the height adjustment handle (9). An axial positioning groove is provided on the small diameter section of the height adjustment handle (9). A boss is provided on the inner circumferential surface of the anti-rotation retaining ring (8) and slides in cooperation with the axial positioning groove. Several tightening nut slots (401) are provided on the circumferential side of the tightening nut (7). An anti-rotation retaining ring tooth (402) is provided on the outer circumferential surface of the anti-rotation retaining ring (8). The anti-rotation retaining ring tooth (402) is inclined and extends into a tightening nut slot (401) for positioning, thereby realizing the circumferential positioning of the tightening nut (7) and the height adjustment handle (9).

8. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 1, characterized in that: The high-low direction screw (6) is threaded with a backlash-eliminating nut (11). The outer circumferential surface of the backlash-eliminating nut (11) is stepped shaft-shaped. The high-low direction fine adjustment handle (9) is provided with a clearance inner hole. The small diameter section of the backlash-eliminating nut (11) extends into the clearance inner hole of the high-low direction fine adjustment handle (9). Under the tightening action, the backlash-eliminating nut (11) eliminates the gap between the high-low direction screw (6) and the high-low direction fine adjustment handle (9).

9. The elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun according to claim 8, characterized in that: The small diameter section of the gap-free nut (11) is fitted with an anti-rotation plate (10). The small diameter section of the gap-free nut (11) is provided with an axial groove. The inner circumferential surface of the anti-rotation plate (10) is provided with a boss that cooperates with the axial groove. The tail end of the height-lowering fine-tuning handle (9) is provided with several height-lowering fine-tuning handle slots (502) along the circumferential direction. The outer circumferential surface of the anti-rotation plate (10) is provided with an anti-rotation plate tooth (501). The anti-rotation plate tooth (501) is inclined and extends into a height-lowering fine-tuning handle slot (502) for positioning, thereby realizing the circumferential positioning of the gap-free nut (11) and the height-lowering fine-tuning handle (9).

10. A compensation correction method based on the elevation-lowering stepped locking compensation correction structure for a vehicle-mounted machine gun as described in claim 1, characterized in that: After the machine gun achieves elevation-lowering step-lock, rotate the elevation-lowering fine-tuning handle (9) in the forward or reverse direction to drive the elevation-lowering screw (6) to rotate. The elevation-lowering screw (6) will move axially at the same time, and the elevation-lowering screw (6) will drive the elevation-lowering connecting shaft (5) to move, thereby driving the handwheel connecting sleeve (2) to rotate around the connecting plate (3), and then causing the handwheel assembly (4) to rotate relative to the bracket body, so as to realize the compensation and correction of the firing aiming point of the vehicle-mounted machine gun after elevation-lowering step-lock.

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