Vehicle-mounted machine gun high-low step locking compensation correction structure and vehicle-mounted machine gun high-low step locking compensation correction method

Abstract

The invention discloses a vehicle-mounted machine gun high-low step locking compensation correction structure and method, and stepless compensation correction can be carried out after high-low step reliable locking. Comprising a bracket body and a hand wheel assembly, a connecting disc is fixed to the outer wall of one side of the bracket body, a hand wheel connecting sleeve is rotationally supported on the connecting disc, the hand wheel assembly is provided with a hand wheel assembly shaft, a hand wheel grip and a spring bolt, the connecting disc is provided with a connecting disc inner pipe, the hand wheel assembly shaft is rotationally supported in the connecting disc inner pipe, and tooth grooves are formed in the wall face of the hand wheel connecting sleeve in the circumferential direction. The spring bolt is embedded into the tooth groove for positioning; a hinged support lug is arranged at the bottom of the hand wheel connecting sleeve, a high-low connecting shaft is rotatably matched with the hinged support lug, a high-low connecting shaft working face is arranged on the high-low connecting shaft, a high-low screw kidney-shaped groove is formed in one end of the high-low screw, and the high-low connecting shaft working face is sleeved with the high-low screw kidney-shaped groove. And the other end of the high-low screw rod is provided with a high-low fine adjustment handle.

Description

Technical Field

[0001] The present invention relates to the technical field of light weapons, and in particular to a structure and method for correcting elevation stepwise locking compensation of a vehicle-mounted machine gun. Background Art

[0002] With the accelerated evolution of modern warfare, the speed of firepower mobility on the battlefield largely determines the victory or defeat of the battle. Whether it is against low-altitude, slow, small targets or enemy armored targets, machine guns need to make shooting damage and change positions quickly in the first time to avoid the firepower of the enemy rockets, artillery, etc. Therefore, the era of traditional machine gun position change relying on shoulder-carrying has passed, and vehicle-mounted machine guns have become one of the main strategies and tactics that are indispensable on the modern battlefield. While vehicle-mounted machine guns have firepower mobility, they also need to aim accurately and hit hard. However, since the current vehicle-mounted machine gun mount products of the troops imitate the traditional Warsaw Pact standard equipment structure, the height and depth are transmitted through the gear tooth arc. When the grip on the handwheel assembly is turned, the grip on the handwheel assembly needs to be loosened after the muzzle is aimed at the target, and the slightly tapered lock tongue on the head of the grip is inserted into the corresponding tooth groove on the handwheel connecting sleeve to achieve reliable height and depth positioning. Because the tooth grooves on the handwheel connecting sleeve are always graduated no matter how small the index is, when the target is located exactly between the two tooth grooves, the lock tongue cannot fall into the tooth groove to achieve reliable positioning. At this time, the handwheel grip has to be slightly rotated forward and reverse to make the actual aiming point deviate from the ideal aiming point to force reliable positioning in the vertical direction, resulting in the actual aiming point being either higher than the target point or lower than the target aiming point, which seriously affects the shooting accuracy of the vehicle-mounted machine gun. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a structure and method for step-by-step locking compensation correction of the elevation of a vehicle-mounted machine gun. After the elevation is reliably locked in steps, if the aiming point deviates, stepless compensation correction can be performed and the aiming point can be accurately locked.

[0004] The object of the present invention is achieved in that:

[0005] A vehicle-mounted machine gun elevation step-locking compensation correction structure comprises a bracket body (1) and a hand wheel assembly (4); the bracket body (1) is U-shaped, and the machine gun is hingedly mounted between two walls of the bracket body (1).

[0006] A connecting plate (3) is fixed on an outer wall of one side of the bracket body (1), a handwheel connecting sleeve (2) is rotatably supported on the connecting plate (3), the handwheel assembly (4) comprises a handwheel assembly shaft (104), a handwheel grip (12), and a locking tongue (13), a connecting plate inner tube (103) is provided at the central part of the connecting plate (3), the handwheel assembly shaft (104) is rotatably supported in the connecting plate inner tube (103), a driving tooth is provided at the end of the handwheel assembly shaft (104), and the driving tooth is used to drive the machine gun to rotate in elevation, a plurality of tooth grooves (101) are provided on the wall surface of the handwheel connecting sleeve (2) along the circumferential direction, and the locking tongue (13) is used to be embedded in a tooth groove (101) for positioning, so as to realize step-by-step locking in elevation, and rotating the handwheel grip (12) can drive the locking tongue (13) to rotate around the handwheel assembly shaft (104), so as to realize that the aiming point is roughly aligned with the shooting target;

[0007] The bottom of the hand wheel connecting sleeve (2) is provided with an articulated support ear, and a high-low connecting shaft (5) is rotatably matched on the articulated support ear, and a high-low connecting shaft working surface (202) is provided on the high-low connecting shaft (5), and also includes a high-low screw rod (6), and one end of the high-low screw rod (6) is provided with a high-low screw rod waist groove (201), and the high-low screw rod waist groove (201) is sleeved on the high-low connecting shaft working surface (202) to compensate for the articulated support ear generated during the rotation of the hand wheel connecting sleeve (2). The other end of the height screw rod (6) is threadedly matched with a height fine-adjustment handle (9), the outer peripheral surface of the height fine-adjustment handle (9) is in the shape of a stepped shaft, a mounting seat is provided at the bottom of the bracket body (1), the small diameter section of the height fine-adjustment handle (9) is clearance-matched in the mounting seat, the end of the small diameter section of the height fine-adjustment handle (9) is threadedly matched with a clamping nut (7), and the clamping nut (7) and the step surface of the height fine-adjustment handle (9) form an axial positioning for the height fine-adjustment handle (9).

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

[0009] Preferably, a pair of hinged ears are provided at the bottom of the hand wheel connecting sleeve (2), and the high and low connecting shaft working surface (202) is located between the pair of hinged ears.

[0010] Preferably, the elevation screw rod (6) and the elevation fine-tuning handle (9) are threadedly matched via 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 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 mounted on the housing of the handwheel assembly (4).

[0012] Preferably, the locking tongue (13) is elastic and can be elastically deformed to change position; or, a spring is provided to allow the locking tongue (13) to elastically expand and contract.

[0013] Preferably, an anti-rotation clamping ring (8) is provided between the clamping nut (7) and the mounting seat, the anti-rotation clamping ring (8) is sleeved on the small diameter section of the height fine-tuning handle (9), the small diameter section of the height fine-tuning handle (9) is provided with an axial positioning groove, a boss is provided on the inner circumferential surface of the anti-rotation clamping ring (8) and is slidably matched with the axial positioning groove, a plurality of clamping nut clamping grooves (401) are provided on the clamping nut (7) along the circumferential direction, an anti-rotation clamping ring tooth (402) is provided on the outer circumferential surface of the anti-rotation clamping ring (8), the anti-rotation clamping ring tooth (402) is inclinedly arranged and extends into a clamping nut clamping groove (401) for positioning, thereby realizing the circumferential position positioning of the clamping nut (7) and the height fine-tuning handle (9).

[0014] Preferably, the thread on the height screw rod (6) is matched with an anti-backlash nut (11), the outer peripheral surface of the anti-backlash nut (11) is in the shape of a stepped shaft, and the height fine-tuning handle (9) is provided with a clearance inner hole, and the small diameter section of the anti-backlash nut (11) extends into the clearance inner hole of the height fine-tuning handle (9). Under the action of tightening, the anti-backlash nut (11) eliminates the gap between the height screw rod (6) and the height fine-tuning handle (9).

[0015] Preferably, the small diameter section of the anti-backlash nut (11) is sleeved with an anti-rotation plate (10), an axial groove is provided on the small diameter section of the anti-backlash nut (11), a boss is provided on the inner circumferential surface of the anti-rotation plate (10) to cooperate with the axial groove, a plurality of height-adjustment handle slots (502) are provided along the circumferential direction at the tail end of the height-adjustment handle (9), an anti-rotation plate tooth (501) is provided on the outer circumferential surface of the anti-rotation plate (10), the anti-rotation plate tooth (501) is tilted and extends into a height-adjustment handle slot (502) for positioning, thereby realizing the circumferential position positioning of the anti-backlash nut (11) and the height-adjustment handle (9).

[0016] A compensation correction method based on a vehicle-mounted machine gun elevation step-locking compensation correction structure. After the machine gun achieves elevation step-locking, the elevation fine-tuning handle (9) is rotated forward or reversely to drive the elevation screw (6) to rotate. The elevation screw (6) simultaneously generates axial movement. The elevation screw (6) drives the elevation connecting shaft (5) to move, thereby driving the hand wheel connecting sleeve (2) to rotate around the connecting plate (3), thereby causing the hand wheel assembly (4) to rotate relative to the bracket body, thereby achieving compensation correction of the shooting aiming point of the vehicle-mounted machine gun after the elevation step-locking.

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

[0018] The present invention makes up for the deficiency in the field of light weapons that the aiming point position of a vehicle-mounted machine gun is different after the elevation is locked in stages, and realizes the transformation from the elevation locking in stages to the aiming point being able to be corrected and corrected in stages without stepless compensation and accurate locking, and the operation is simple and convenient, and the positioning is reliable. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 This is a schematic diagram of the installation of the high and low trapezoidal screw.

[0022] Figure 4 This is a working diagram of the anti-rotation collar.

[0023] Figure 5 This is a working diagram of the anti-rotation piece.

[0024] Reference numerals

[0025] In the accompanying drawings: 1. bracket body, 2. handwheel connecting sleeve, 3. connecting plate, 4. handwheel assembly, 5. height-low direction connecting shaft, 6. height-low direction trapezoidal screw, 7. clamping nut, 8. anti-rotation clamping ring, 9. height-low direction fine-tuning handle, 10. anti-rotation plate, 11. anti-backlash nut, 12. handwheel grip, 13. lock tongue, 101. handwheel connecting sleeve tooth groove, 102. lock tongue front section, 103. connecting plate inner tube, 104. handwheel assembly shaft, 201. height-low direction trapezoidal screw waist groove, 202. height-low direction connecting shaft working surface, 401. clamping nut slot, 402. anti-rotation clamping ring teeth, 501. anti-rotation plate teeth, 502. height-low direction fine-tuning handle slot. DETAILED DESCRIPTION

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

[0027] like Figure 1 to Figure 5 As shown, the handwheel connecting sleeve 2 is positioned on the bracket body 1 through the connecting disk 3, the handwheel connecting sleeve 2 can rotate around the connecting disk 3, the handwheel assembly 4 is installed on the connecting disk inner tube 103 through the handwheel assembly shaft 104, and the handwheel grip 12 is rotated to achieve the aiming point roughly aligned with the shooting target, and at the same time, the front section 102 of the lock 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 height-low trapezoidal screw 6 through the height-low connecting shaft 5. The front end of the height-low trapezoidal screw 6 has a height-low trapezoidal screw waist groove 201, which acts on the height-low connecting shaft working surface 202 on the height-low connecting shaft 5 to compensate for the vertical height difference generated by the rotation of the handwheel connecting sleeve 2. The height-low trapezoidal screw 6 is connected to the height-low fine-adjustment handle 9 through a trapezoidal thread with a self-locking function. The gap is eliminated under the tightening action of the anti-backlash nut 11, and then the anti-rotation plate teeth 501 on the anti-rotation plate 10 act on the height-low fine-adjustment handle groove 502 on the end surface of the height-low fine-adjustment handle 9 to achieve anti-rotation fixation. The axial gap between the height-low fine-adjustment handle 9 and the bracket body 1 is eliminated through the tightening action of the tightening nut 7, and then the anti-rotation clamp ring teeth 402 on the circumference of the anti-rotation clamp ring 8 act on the tightening nut groove 401 on the cross section of the tightening nut 7 to achieve anti-rotation fixation. When the elevation has been locked in stages, the elevation fine-tuning handle 9 is rotated forward or reversely to drive the elevation trapezoidal screw 6 to rotate. Under the axial movement of the elevation trapezoidal screw 6, the elevation connecting shaft 5 is driven to move up or down, thereby driving the handwheel connecting sleeve 2 to rotate around the connecting disk 3, thereby causing the handwheel assembly 4 to rotate relative to the bracket body, thereby realizing compensation correction of the shooting aiming point after the vehicle-mounted machine gun has been locked in stages.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than 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 in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A vehicle-mounted machine gun elevation step-locking compensation correction structure, characterized in that: The machine gun comprises a bracket body (1) and a hand wheel assembly (4). The bracket body (1) is U-shaped, and the machine gun is hingedly mounted between two walls of the bracket body (1). A connecting plate (3) is fixed on an outer wall of one side of the bracket body (1), a handwheel connecting sleeve (2) is rotatably supported on the connecting plate (3), the handwheel assembly (4) comprises a handwheel assembly shaft (104), a handwheel grip (12), and a locking tongue (13), a connecting plate inner tube (103) is provided at the central part of the connecting plate (3), the handwheel assembly shaft (104) is rotatably supported in the connecting plate inner tube (103), a driving tooth is provided at the end of the handwheel assembly shaft (104), and the driving tooth is used to drive the machine gun to rotate in elevation, a plurality of tooth grooves (101) are provided on the wall surface of the handwheel connecting sleeve (2) along the circumferential direction, and the locking tongue (13) is used to be embedded in a tooth groove (101) for positioning, so as to realize step-by-step locking in elevation, and rotating the handwheel grip (12) can drive the locking tongue (13) to rotate around the handwheel assembly shaft (104), so as to realize that the aiming point is roughly aligned with the shooting target; The bottom of the hand wheel connecting sleeve (2) is provided with an articulated support ear, and a high-low connecting shaft (5) is rotatably matched on the articulated support ear, and a high-low connecting shaft working surface (202) is provided on the high-low connecting shaft (5), and also includes a high-low screw rod (6), and one end of the high-low screw rod (6) is provided with a high-low screw rod waist groove (201), and the high-low screw rod waist groove (201) is sleeved on the high-low connecting shaft working surface (202) to compensate for the articulated support ear generated during the rotation of the hand wheel connecting sleeve (2). The other end of the height screw rod (6) is threadedly matched with a height fine-adjustment handle (9), the outer peripheral surface of the height fine-adjustment handle (9) is in the shape of a stepped shaft, a mounting seat is provided at the bottom of the bracket body (1), the small diameter section of the height fine-adjustment handle (9) is clearance-matched in the mounting seat, the end of the small diameter section of the height fine-adjustment handle (9) is threadedly matched with a clamping nut (7), and the clamping nut (7) and the step surface of the height fine-adjustment handle (9) form an axial positioning for the height fine-adjustment handle (9).

2. A vehicle-mounted machine gun elevation step-locking compensation correction structure and method according to claim 1, characterized in that: A pair of hinged ears are provided at the bottom of the hand wheel connecting sleeve (2), and the high and low connecting shaft working surface (202) is located between the pair of hinged ears.

3. The vehicle-mounted machine gun elevation step-locking compensation correction structure and method according to claim 1, characterized in that: The height-low direction screw rod (6) and the height-low direction fine adjustment handle (9) are thread-matched via a trapezoidal thread with a self-locking function.

4. The vehicle-mounted machine gun elevation step-locking compensation correction structure and method according to claim 1, characterized in that: The handwheel assembly (4) has an outer shell, the handwheel connecting sleeve (2) and the outer shell of the handwheel assembly (4) are clearance-matched and can rotate relative to each other, the handwheel assembly shaft (104) is located at the center of the outer shell of the handwheel assembly (4), and the locking tongue (13) is mounted on the outer shell of the handwheel assembly (4).

5. The vehicle-mounted machine gun elevation step-locking compensation correction structure and method according to claim 4, characterized in that: The locking tongue (13) is elastic and can be elastically deformed to change position; or a spring is provided to allow the locking tongue (13) to elastically expand and contract.

6. The vehicle-mounted machine gun elevation step-locking compensation correction structure and method according to claim 1, characterized in that: An anti-rotation clamping ring (8) is arranged between the clamping nut (7) and the mounting seat. The anti-rotation clamping ring (8) is sleeved on the small diameter section of the height fine-tuning handle (9). The small diameter section of the height fine-tuning handle (9) is provided with an axial positioning groove. A boss is arranged on the inner circumference of the anti-rotation clamping ring (8) to slide with the axial positioning groove. A plurality of clamping nut clamping grooves (401) are arranged on the clamping nut (7) along the circumference. An anti-rotation clamping ring tooth (402) is arranged on the outer circumference of the anti-rotation clamping ring (8). The anti-rotation clamping ring tooth (402) is arranged obliquely and extends into a clamping nut clamping groove (401) for positioning, thereby realizing the circumferential position positioning of the clamping nut (7) and the height fine-tuning handle (9).

7. The elevation-stepped locking compensation correction structure and method for a vehicle-mounted machine gun according to claim 1, characterized in that: The thread of the height screw rod (6) is matched with an anti-backlash nut (11), the outer peripheral surface of the anti-backlash nut (11) is in the shape of a stepped shaft, the height fine-tuning handle (9) is provided with a clearance inner hole, the small diameter section of the anti-backlash nut (11) extends into the clearance inner hole of the height fine-tuning handle (9), and the anti-backlash nut (11) eliminates the gap between the height screw rod (6) and the height fine-tuning handle (9) under the action of tightening.

8. The vehicle-mounted machine gun elevation step-locking compensation correction structure and method according to claim 7, characterized in that: The small diameter section of the anti-backlash nut (11) is sleeved with an anti-rotation sheet (10), and an axial slide groove is arranged on the small diameter section of the anti-backlash nut (11). A boss is arranged on the inner circumferential surface of the anti-rotation sheet (10) to cooperate with the axial slide groove. A plurality of height-direction fine-adjustment handle clamping grooves (502) are arranged along the circumferential direction at the tail end of the height-direction fine-adjustment handle (9). An anti-rotation sheet tooth (501) is arranged on the outer circumferential surface of the anti-rotation sheet (10). The anti-rotation sheet tooth (501) is inclined and extends into a height-direction fine-adjustment handle clamping groove (502) for positioning, thereby realizing the circumferential position positioning of the anti-backlash nut (11) and the height-direction fine-adjustment handle (9).

9. A compensation correction method for a vehicle-mounted machine gun elevation step-locking compensation correction structure according to claim 1, characterized in that: After the machine gun achieves the step-by-step locking of the elevation, the elevation fine-adjustment handle (9) is rotated forward or reversely to drive the elevation screw (6) to rotate. The elevation screw (6) simultaneously generates axial movement. The elevation screw (6) drives the elevation connecting shaft (5) to move, thereby driving the handwheel connecting sleeve (2) to rotate around the connecting plate (3), and further causing the handwheel assembly (4) to rotate relative to the bracket body, thereby achieving compensation correction of the shooting aiming point after the vehicle-mounted machine gun is locked in steps.

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