Method for adjusting verticality of artillery shooting surface and target plate

Abstract

The invention discloses a method for adjusting verticality of an artillery shooting surface and a target plate, and belongs to the technical field of measurement. According to the method for adjusting the perpendicularity of the artillery shooting surface and the target plate, the position of the target plate can be stably obtained by adjusting the perpendicularity of the artillery shooting surface and the target plate. The method comprises the following steps of: pasting a plane mirror on an extension line of a vertical line of a cross line to be aimed at by a bore on a target plate, adjusting the focal length of a theodolite telescope, and repeating the steps according to the condition of an image in the plane mirror aimed at by the theodolite telescope until the image at the central point of an objective lens of the theodolite telescope in the plane mirror is aimed at by the telescope to finish adjustment. The method has the advantages that the process of adjusting the verticality of the artillery shooting surface and the target plate is controllable, the adjusting result is stable, and the method is suitable for various types of artillery.

Description

Technical Field

[0001] The invention belongs to the technical field of measurement. Background Art

[0002] The firing surface of a gun is the plumb plane where the axis of the gun bore is located when the gun body is horizontal. The setting of many parameters of the gun is based on the firing surface of the gun. In the inspection of guns, the perpendicularity of the firing surface of the gun and the target plate is the measurement condition of many inspection items. For example, the inspection items such as zero line inspection, parallelism between tubes and consistency of the gun axis are based on the axis of the gun bore when the gun body is horizontal. In the inspection, the axis of the gun bore is extended to the crosshair center of the target plate at a specified distance, and the deviation between the other axes and the corresponding crosshair center after being extended to the target plate is checked. When the firing surface of the gun is not perpendicular to the target plate, the projection distance of the axis of the gun bore and other axes on the target plate after being extended to the target plate is not consistent with the actual axis spacing. At present, during on-site operation, the position of the target plate can only be roughly adjusted by naked eye observation, and the adjustment results vary from person to person and are unstable. Summary of the invention

[0003] The purpose of the invention is to provide a method for adjusting the cannon shooting surface and the target plate vertically so as to stably obtain the position of the target plate by adjusting the cannon shooting surface and the target plate vertically.

[0004] The steps of the present invention are: S8. Paste a plane mirror on the extension line of the vertical line of the crosshairs that the gun barrel should aim at on the target board. The plane mirror is parallel to the target board surface, and the center of the plane mirror is roughly at the same height as the center of the three axes of the theodolite. S9. Adjust the focal length of the theodolite telescope to make the image in the plane mirror observed by the theodolite telescope clear; S10. Adjust the target plate according to the image in the plane mirror aimed at by the theodolite telescope. The specific operations are as follows: If the aim is the image of the object to the left of the center of the theodolite telescope objective lens in the plane mirror, then from the perspective of looking down, rotate the target plate counterclockwise; If the aim is the image of the object to the right of the center of the theodolite telescope objective lens in the plane mirror, then from the perspective of looking down, rotate the target plate in a clockwise direction; If the aim is the image of the object above the center of the objective lens of the theodolite telescope in the plane mirror, adjust the target plate forward from the direction facing the muzzle; If the aim is the image of the object below the center of the objective lens of the theodolite telescope in the plane mirror, the target plate should be tilted back and adjusted from the direction facing the muzzle; S11, repeat S9 to S10 until the image of the center point of the objective lens of the theodolite telescope in the plane mirror is aimed by the telescope, and the adjustment is completed.

[0005] The invention has the advantages that the adjustment process of the verticality between the cannon shooting surface and the target plate is controllable, the adjustment result is stable, and the invention is suitable for various types of cannons. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 This is a schematic diagram of the layout of a certain artillery inspection site; Figure 2 It is a schematic diagram of the placement of the plane mirror on the target plate; Figure 3 It is a schematic diagram of the position when the image of the object on the left side of the theodolite is observed; Figure 4 This is a schematic diagram of the position when the object image on the right side of the theodolite is observed. DETAILED DESCRIPTION

[0007] The steps of the present invention are: S1. The gun under test enters the designated inspection area and is leveled using the patented “gun rotation plane leveling method” (CN115717848 A, 2023.02.28); S2. Set up the theodolite and level it at a position about twice the length of the gun barrel in front of the muzzle. T Center of muzzle face P Roughly the same height; S3. Horizontal threading of the theodolite gun bore is achieved through the patented “horizontal threading method of theodolite gun bore” (CN 114018090 A, 2022.02.08); S4. Tighten the horizontal brake screw of the theodolite and invert the theodolite telescope by about 180°; S5. Place the target plate about 40m in front of the muzzle; S6. Adjust the visual axis of the theodolite telescope to the horizontal level and adjust the focal length of the theodolite telescope to the target plate; S7. Move the target plate so that the center of the crosshairs on the target plate where the gun barrel should be aimed M On the vertical line of the telescope's crosshairs; S8. Paste a plane mirror on the extension line of the vertical line of the crosshairs on the target board where the gun barrel should aim. The plane mirror is parallel to the target board surface. J With theodolite three-axis center T Roughly the same height; S9. Adjust the focal length of the theodolite telescope to make the image in the plane mirror observed by the theodolite telescope clear; S10, theodolite telescope objective lens center point A The image in the plane mirror is a point B , according to the image in the plane mirror aimed at by the theodolite telescope, adjust the target plate. The specific operations are as follows: If you aim at the center of the theodolite telescope objective AObject on the left L The image in the plane mirror, from the perspective of looking down, makes the target plate rotate counterclockwise; If you aim at the center of the theodolite telescope objective A Object on the right R The image in the plane mirror, from the perspective of looking down, makes the target plate rotate in the clockwise direction; If you aim at the center of the theodolite telescope objective A Objects above U The image in the plane mirror is adjusted by tilting the target plate forward from the direction facing the muzzle; If you aim at the center of the theodolite telescope objective A Object below D The image in the plane mirror is adjusted by tilting the target plate backward from the direction facing the muzzle.

[0008] S11, repeat S9 to S10 until the image of the center point of the theodolite telescope objective lens is in the plane mirror. B Aimed by the telescope, the adjustment is completed.

[0009] Example: Taking a certain artillery as an embodiment of the present invention, the gun barrel is 5m long, and the adjustment process is as follows: S1. The gun under test enters the designated inspection area and is leveled using the patented “gun rotation plane leveling method” (CN115717848 A, 2023.02.28); S2. Set up the theodolite and level it at a position about twice the gun length (about 10m) in front of the muzzle. T Center of muzzle face P Roughly equal height, such as Figure 1 As shown; S3. Horizontal threading of the theodolite gun bore is achieved through the patented “horizontal threading method of theodolite gun bore” (CN 114018090 A, 2022.02.08); S4. Tighten the horizontal brake screw of the theodolite and invert the theodolite telescope by about 180°; S5. Place the target plate about 40m in front of the muzzle. Figure 1 As shown; S6. Adjust the visual axis of the theodolite telescope to the horizontal level and adjust the focal length of the theodolite telescope to the target plate; S7. Move the target plate so that the center of the crosshairs on the target plate where the gun barrel should be aimed M On the vertical line of the telescope's crosshairs; S8. Paste a plane mirror on the extension line of the vertical line of the crosshairs on the target board where the gun barrel should aim. The plane mirror is parallel to the target board surface. J With theodolite three-axis center TRoughly the same height; S9. Adjust the focal length of the theodolite telescope to make the image in the plane mirror observed by the theodolite telescope clear; S10, theodolite telescope objective lens center point A The image in the plane mirror is a point B , according to the image in the plane mirror aimed at by the theodolite telescope, adjust the target plate. The specific operations are as follows: If you aim at the center of the theodolite telescope objective A Object on the left L The image in a plane mirror (such as Figure 3 As shown in the figure), the target plate is rotated counterclockwise from a bird's-eye view; If you aim at the center of the theodolite telescope objective A Object on the right R The image in a plane mirror (such as Figure 4 As shown in the figure), the target plate is rotated clockwise from a bird's-eye view; If you aim at the center of the theodolite telescope objective A Objects above U The image in the plane mirror is adjusted by tilting the target plate forward from the direction facing the muzzle; If you aim at the center of the theodolite telescope objective A Object below D The image in the plane mirror is adjusted by tilting the target plate backward from the direction facing the muzzle; S11, repeat S9 to S10 until the image of the center point of the theodolite telescope objective lens is in the plane mirror. B Aimed by the telescope, the adjustment is completed.

[0010] The basic conditions set are: the standard deviation of theodolite leveling is 20", the non-perpendicularity between the theodolite sight axis and the horizontal axis is 20", the inclination of the theodolite horizontal axis is 20", the standard deviation of the vertical line observed by the theodolite is 0.2 mm, the angle between the plane mirror reflection surface and the target plate is 30", and the distance between the theodolite three-axis center and the muzzle end face center is 5 m. Random sampling 100,000 times, the standard deviation of the non-perpendicularity between the gun shooting surface and the target plate is 92.2".

Claims

1. A method for adjusting the verticality of a gun shooting surface and a target plate, characterized in that: The steps are: S8. Paste a plane mirror on the extension line of the vertical line of the crosshairs that the gun barrel should aim at on the target board. The plane mirror is parallel to the target board surface, and the center of the plane mirror is roughly at the same height as the center of the three axes of the theodolite. S9. Adjust the focal length of the theodolite telescope to make the image in the plane mirror observed by the theodolite telescope clear; S10. Adjust the target plate according to the image in the plane mirror aimed at by the theodolite telescope. The specific operations are as follows: If the aim is the image of the object to the left of the center of the theodolite telescope objective lens in the plane mirror, then from the perspective of looking down, rotate the target plate counterclockwise; If the aim is the image of the object to the right of the center of the theodolite telescope objective lens in the plane mirror, then from the perspective of looking down, rotate the target plate in a clockwise direction; If the aim is the image of the object above the center of the objective lens of the theodolite telescope in the plane mirror, adjust the target plate by tilting it forward from the direction facing the muzzle; If the aim is the image of the object below the center of the objective lens of the theodolite telescope in the plane mirror, adjust the target plate backward from the direction facing the muzzle; S11, repeat S9 to S10 until the image of the center point of the objective lens of the theodolite telescope in the plane mirror is aimed by the telescope, and the adjustment is completed.

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