An aircraft full machine horizontal measuring device and a measuring adjusting method thereof

Abstract

The application belongs to the technical field of structural horizontal measurement adjustment design, and particularly relates to an airplane whole-machine horizontal measurement device and a measurement adjustment method thereof, which combines a standard hole pin positioning combined long rod ruler + long digital vernier caliper precise length measurement method, adopts a general tripod for lifting and two-way rotation, combines a long-distance hanging line cross scale alignment plumb method, combines a laser horizontal projection line method, and combines a laser point position projection and upward contact point positioning method, and can realize high-precision measurement adjustment of different types of airplane whole machines.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of structural horizontal measurement adjustment design, and particularly relates to an aircraft full-machine horizontal measurement device and a measurement adjustment method thereof. BACKGROUND

[0002] After the assembly of a large aircraft component and the installation of a system are completed, full-machine horizontal measurement adjustment needs to be performed to make the aircraft reach a horizontal position, thereby providing a basis for flight control attitude adjustment.

[0003] Currently, a line-of-sight level + handheld ruler method is mostly used to measure the horizontal height positions of multiple horizontal measurement points below or laterally to the fuselage, and a jack is used to horizontally adjust the full machine to make the aircraft reach a horizontal position.

[0004] The horizontal adjustment precision of the full machine is generally ±0.5 mm, the horizontal measurement points are 2 m to 5 m away from the ground, the line-of-sight level + handheld ruler method is used to measure the horizontal height positions of the horizontal measurement points, the scale error of the line-of-sight level and the handheld ruler is mostly about ±0.5 mm, but the plumb bob of the handheld ruler is unstable, and the line-of-sight level also introduces additional visual error, in the actual measurement process, a large error accumulation will be generated, which is usually 1 mm to 2 mm, and it is difficult to meet the precision requirement of ±0.5 mm of the full-machine horizontal adjustment of the aircraft.

[0005] The present application is proposed in view of the existence of the above technical defects. SUMMARY

[0006] The purpose of the present application is to provide an aircraft full-machine horizontal measurement device and a measurement adjustment method thereof, so as to realize high-precision measurement adjustment of the full machine of the aircraft.

[0007] The technical solution of the present application is as follows:

[0008] The present application has at least the following beneficial technical effects:

[0009] On the one hand, an aircraft full-machine horizontal measurement device is provided, which comprises a laser level and a horizontal alignment measurement structure.

[0010] The horizontal alignment measurement structure has multiple horizontal alignment measurement structures, each of which comprises a triangular support, a vertical ruler, a calibration cylindrical pin, a horizontal probe, a vertical probe, a plumb bob assembly, and a horizontal light receiving alignment mark plate.

[0011] The triangular support is an observation tripod capable of lifting, pitching, and axial rotation.

[0012] The vertical ruler is connected to the triangular support.

[0013] The calibration cylindrical pin has multiple calibration cylindrical pins, which are arranged at equal intervals on the vertical ruler.

[0014] The horizontal measuring head comprises a horizontal light transmission tube, a first light transmission target plate, a second light transmission target plate, a horizontal supporting rod and a laser generator.

[0015] The horizontal light transmission tube is connected to the vertical scale and is above each calibration cylindrical pin.

[0016] The first light transmission target plate and the second light transmission target plate are thin circular plate structures, and a cross target groove is arranged at the center of each plate, and a light transmission hole is arranged at the cross position of the cross target groove; the first light transmission target plate and the second light transmission target plate are arranged at the two ends of the horizontal light transmission tube respectively.

[0017] One end of the horizontal supporting rod is connected to the vertical scale, and the other end is provided with the laser generator, and the laser generator is opposite to the light transmission hole on the first light transmission target plate.

[0018] The vertical measuring head is connected to the upper end of the vertical scale.

[0019] The plumb assembly comprises a horizontal scale disc, a copper wire, a plumb and a cross pointer.

[0020] The horizontal scale disc is connected to the vertical scale and has a center hole thereon.

[0021] The upper end of the copper wire is connected to the vertical scale, and the lower end penetrates through the center hole and is connected to the plumb.

[0022] The cross pointer is sleeved on the copper wire and is installed on the horizontal scale disc.

[0023] The horizontal light receiving alignment identification board has two, which are clamped on the vertical scale, and the two horizontal light receiving alignment identification boards are connected by bolts, and one of the horizontal light receiving alignment identification boards has a lower horizontal marking line, which is used for aligning with the horizontal laser light emitted by the laser level.

[0024] Optionally, the laser level of the aircraft full-machine horizontal measuring device has a height-adjustable support.

[0025] The vertical scale is spliced by multiple segments.

[0026] The vertical scale has multiple horizontally calibrated holes which are equally spaced, and each calibration cylindrical pin penetrates through each horizontally calibrated hole.

[0027] Optionally, the vertical scale of the aircraft full-machine horizontal measuring device has a horizontal positioning hole, and the horizontal light transmission tube penetrates through the horizontal positioning hole.

[0028] The horizontal light transmission tube is above each calibration cylindrical pin and is equally spaced with each calibration cylindrical pin.

[0029] The width of the cross-shaped target slot on the first and second light-transmitting target plates is 0.1 mm, and the diameter of the light-transmitting hole on the first light-transmitting target plate is 0.2 mm, and the diameter of the light-transmitting hole on the second light-transmitting target plate is not less than one time of the diameter of the light-transmitting hole on the first light-transmitting target plate.

[0030] Optionally, in the aircraft full-machine horizontal measurement device, the laser generator is a pen-tube type red laser generator.

[0031] Optionally, in the aircraft full-machine horizontal measurement device, the top end of the vertical probe is processed into a conical structure, and the tip of the conical structure is processed into a circular truncated cone, and the diameter of the circular truncated cone is 0.2 mm.

[0032] The bottom end of the vertical probe is a cylindrical segment, the length of the cylindrical segment is not less than 2 mm, and a circular tube segment is connected below the cylindrical segment and is inserted into a cylindrical hole opened at the upper end of the vertical scale.

[0033] Optionally, in the aircraft full-machine horizontal measurement device, the four pointers of the cross pointer respectively point to 0°, 90°, 180° and 270° on the horizontal scale disc, indicating that the vertical scale is in a complete plumb state.

[0034] Optionally, in the aircraft full-machine horizontal measurement device, in the complete plumb state, the parallelism deviation between the vertical scale and the copper wire is not greater than 0.1 mm. wherein, is the aircraft full-machine horizontal adjustment tolerance.

[0035] Optionally, in the aircraft full-machine horizontal measurement device, wherein, is the distance from the center of the horizontal light-transmitting tube to the end of the upper end of the vertical scale;

[0036] wherein, is the interval distance between each calibration cylindrical pin;

[0037] wherein, is the length of the vertical scale, is the expected height of the horizontal measurement point on the aircraft;

[0038] wherein, is the distance from the top end of the vertical probe to the center of the horizontal light-transmitting tube.

[0039] In another aspect, an aircraft full-machine horizontal measurement adjustment method is provided, which is implemented based on the aircraft full-machine horizontal measurement device, and when the horizontal measurement adjustment of the aircraft full-machine is performed based on the plurality of horizontal measurement points below the fuselage, the method comprises:

[0040] Step one, with the jack, the initial horizontal adjustment of the aircraft;

[0041] Step two, the laser level is arranged below the fuselage, and the horizontal alignment measurement structure is arranged below each horizontal measurement point;

[0042] Step three, the vertical distance between the horizontal laser light emitted by the laser level and the ground is measured , and the expected distance between the horizontal laser light and each horizontal measurement point is calculated ;

[0043] Step four, for each horizontal alignment measurement structure, the distance between the outer diameter of the nearest calibration cylindrical pin above the horizontal laser light and the lower horizontal mark line is measured with the vernier caliper , the position of the horizontal light receiving alignment identification plate on the vertical scale is adjusted so that , wherein is the number of calibration cylindrical pins above the horizontal laser light, is the radius of the calibration cylindrical pin;

[0044] Step five, for each horizontal alignment measurement structure, the lifting function of the triangular support is used to adjust the horizontal alignment measurement structure to be lower than the horizontal measurement point by no less than 100mm;

[0045] Step six, for each horizontal alignment measurement structure, the pitch function of the triangular support is used to adjust the vertical scale to be in a completely plumb state, and the triangular support is moved to make the vertical probe directly face the horizontal measurement point, and the operation is repeated until the vertical scale is in a completely plumb state and the vertical probe directly faces the horizontal measurement point;

[0046] Step seven, for each horizontal alignment measurement structure, the lifting function of the triangular support is used to adjust the top end of the vertical probe to be in contact with the horizontal measurement point, if the lower horizontal mark line is below the horizontal laser light, the corresponding horizontal measurement point on the fuselage is raised with the jack, if the lower horizontal mark line is above the horizontal laser light, the corresponding horizontal measurement point on the fuselage is lowered with the jack, and the operation is repeated until the top end of each vertical probe is in contact with the horizontal measurement point, and the lower horizontal mark line is aligned with the horizontal laser light.

[0047] Optionally, in the above-mentioned aircraft horizontal measurement adjustment method, when the horizontal measurement adjustment of the aircraft is based on multiple horizontal measurement points on the lateral side of the fuselage, the method comprises:

[0048] Step one, with the jack, the initial horizontal adjustment of the aircraft;

[0049] Step two, the laser level is arranged below the fuselage, and the horizontal alignment measurement structure is arranged laterally at each horizontal measurement point;

[0050] Step three, measure the vertical distance between the horizontal laser light emitted by the laser level and the ground , and calculate the expected distance between the horizontal laser light and each horizontal measurement point ;

[0051] Step four, for each horizontal alignment measurement structure, measure the distance between the outer diameter of the nearest calibration cylindrical pin above the horizontal laser light and the lower horizontal marking line with the vernier caliper Adjust the position of the alignment identification board on the vertical ruler to receive the horizontal light so that ;

[0052] Step five, for each horizontal alignment measurement structure, adjust the vertical ruler to be in a complete plumb state using the pitch function of the tripod, and adjust the horizontal marking line to be aligned with the horizontal laser light using the lifting function of the tripod

[0053] Step six, for each horizontal alignment measurement structure, adjust the laser generator to emit a laser beam in the direction of the horizontal measurement point to form a projection point on the aircraft body using the rotation function of the tripod, and adjust the attitude of the aircraft with the jack so that each projection point coincides with the horizontal measurement point.

[0054] The application provides a full-aircraft horizontal measurement device and a measurement and adjustment method thereof, which combine a standard hole pin positioning combined long rod ruler + long digital vernier caliper precise length measurement method, adopt a general tripod for lifting and two-way rotation, combine a long-distance hanging line cross scale alignment plumb method, combine a laser horizontal projection scale method, and combine a laser point projection and upward contact point positioning method, and can realize high-precision measurement and adjustment of different types of full aircraft. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 is a use schematic diagram of the full-aircraft horizontal measurement and adjustment device provided by the application;

[0056] Figure 2 is a schematic diagram of the horizontal alignment measurement structure at one angle provided by the application;

[0057] Figure 3 is a schematic diagram of the horizontal alignment measurement structure at another angle provided by the application;

[0058] Figure 4 is a transverse schematic diagram of the vertical ruler provided by the application;

[0059] Figure 5 is a schematic diagram of a part of the horizontal alignment measurement structure provided by the application;

[0060] Figure 6 is a partial sectional view of a horizontal alignment measurement structure provided by an embodiment of the present application;

[0061] Figure 7 is a schematic view of another part of a horizontal alignment measurement structure provided by an embodiment of the present application;

[0062] Figure 8 is a schematic view of yet another part of a horizontal alignment measurement structure provided by an embodiment of the present application;

[0063] Figure 9 is a schematic view of a principle of horizontal measurement adjustment of a whole aircraft based on multiple horizontal measurement points below a fuselage provided by an embodiment of the present application;

[0064] Figure 10 is a schematic view of a principle of horizontal measurement adjustment of a whole aircraft based on multiple horizontal measurement points laterally of a fuselage provided by an embodiment of the present application;

[0065] wherein:

[0066] 1 - laser level; 2 - horizontal alignment measurement structure;

[0067] 3 - triangular support; 4 - vertical scale; 5 - calibration cylindrical pin; 6 - horizontal probe; 7 - vertical probe; 8 - plumb assembly; 9 - horizontal light receiving alignment identification board;

[0068] 61 - horizontal light transmission tube; 62 - first light transmission target plate; 63 - second light transmission target plate; 64 - horizontal support rod; 65 - laser generator;

[0069] 81 - horizontal scale disc; 82 - copper wire; 83 - plumb; 84 - cross pointer;

[0070] is a distance from a center of the horizontal light transmission tube to an upper end of the vertical scale;

[0071] is a distance between the calibration cylindrical pins;

[0072] is a length of the vertical scale;

[0073] is a desired height of a horizontal measurement point on an aircraft;

[0074] is a distance from a top end of the vertical probe to a center of the horizontal light transmission tube;

[0075] is a vertical distance of the horizontal laser light from the ground;

[0076] the desired distance between the horizontal laser light line and each horizontal measurement point;

[0077] the distance between the upper horizontal marking line and the outer diameter of the nearest calibration cylindrical pin above the horizontal laser light line.

[0078] In order to better illustrate the embodiments, some contents in the drawings may be omitted, enlarged or reduced, which are only used for exemplary illustration and cannot be understood as a limitation to the present application. DETAILED DESCRIPTION

[0079] In order to make the technical solutions of the present application and its advantages clearer, the technical solutions of the present application will be further clearly and completely described in detail below in combination with the drawings. It should be understood that the specific embodiments described herein are only part of the embodiments of the present application, which are used to explain the present application, but not to limit the present application. It should be noted that, for the convenience of description, only parts related to the present application are shown in the drawings, and other related parts can be referred to the general design.

[0080] In addition, unless otherwise defined, the technical terms or scientific terms used in the description of the present application should be the general meanings understood by the general technical personnel in the field of the present application. In the description of the present application, “including” indicates that the concept appearing before the word covers the concepts listed after the word and its equivalents, and does not exclude other associated concepts.

[0081] In addition, the words expressing the position used in the description of the present application are only used to express the relative direction or position relationship, and when the absolute position of the described object changes, the relative position relationship may also change accordingly. It should be noted that, unless otherwise specified and limited, “installation”, “connection” and similar words used in the description of the present application should be understood in a broad sense, for example, the connection can be fixed connection, or detachable connection; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, and the person skilled in the art can understand the specific meaning of the present application according to the specific circumstances.

[0082] A full-machine horizontal measurement device of an airplane, as shown in Figure 1 , comprises a laser level 1 and horizontal alignment measurement structures 2.

[0083] The laser level 1 is provided with a height-adjustable support.

[0084] The horizontal alignment measurement structures 2 are multiple and at least three, each of which comprises a triangular support 3, a vertical scale 4, a calibration cylindrical pin 5, a horizontal probe 6, a vertical probe 7, a plumb assembly 8 and a horizontal light line receiving alignment marking plate 9, asFigures 2-3 as shown.

[0085] The triangular support 3 is an observation tripod capable of lifting, pitching and axial rotation.

[0086] The vertical scale 4 is connected to the triangular support 3 through a pipe clamp. The vertical scale 4 can be designed to be spliced by multiple segments, such as Figure 4 as shown.

[0087] The calibration cylindrical pin 5 is arranged at equal intervals on the vertical scale 4. Specifically, the vertical scale 4 can be designed to have multiple horizontal calibration holes arranged at equal intervals, and each calibration cylindrical pin 5 is arranged through each horizontal calibration hole.

[0088] The horizontal measuring head 6 includes a horizontal light pipe 61, a first light transmission target plate 62, a second light transmission target plate 63, a horizontal support rod 64, and a laser generator 65, such as Figures 5-6 as shown.

[0089] The horizontal light pipe 61 is connected to the vertical scale 4. Specifically, the vertical scale 4 can be designed to have a horizontal positioning hole, and the horizontal light pipe 61 is arranged through the horizontal positioning hole. The horizontal light pipe 61 is arranged above each calibration cylindrical pin 5 and is arranged at equal intervals with each calibration cylindrical pin 5.

[0090] The first light transmission target plate 62 and the second light transmission target plate 63 are thin circular plate structures, and a cross target groove is arranged at the center. The cross target groove is provided with a light transmission hole at the cross position. The width of the cross target groove is 0.1 mm. The diameter of the light transmission hole on the first light transmission target plate 62 is 0.2 mm. The diameter of the light transmission hole on the second light transmission target plate 63 is not less than one time of the diameter of the light transmission hole on the first light transmission target plate 62, and can be designed as 0.1 mm. The first light transmission target plate 62 and the second light transmission target plate 63 are arranged at both ends of the horizontal light pipe 61.

[0091] One end of the horizontal support rod 64 is connected to the vertical scale 4, and the other end is provided with the laser generator 65. Specifically, the horizontal support rod 64 can be connected to the vertical scale 4 through a pipe clamp, and the laser generator 65 can be connected to the horizontal support rod 64 through a pipe clamp. The laser generator 65 is a pen tube type red laser generator, and is opposite to the light transmission hole on the first light transmission target plate 62.

[0092] The vertical measuring head 7 is connected to the upper end of the vertical scale 4. The top end can be processed into a conical structure, and the tip of the conical structure is processed into a circular truncated cone. The diameter of the circular truncated cone is 0.2 mm.

[0093] Specifically, the bottom end of the vertical measuring head 7 can be designed as a cylindrical segment, and the length of the cylindrical segment is not less than 2 mm. A circular pipe segment is connected below the cylindrical segment, and the circular pipe segment is inserted into a cylindrical hole opened at the upper end of the vertical scale 4, so as to realize the connection of the vertical measuring head 7 to the upper end of the vertical scale 4.

[0094] The plumb assembly 8 includes a horizontal scale disc 81, a copper wire 82, a plumb 83, a cross pointer 84, as shown in Figure 7

[0095] The horizontal scale disc 81 is connected to the vertical scale 4 by a pipe clamp, and has a center hole on it.

[0096] The upper end of the copper wire 82 is connected to the vertical scale 4 by a pipe clamp, and the lower end is connected to the plumb 83 through the center hole.

[0097] The cross pointer 84 is sleeved on the copper wire 82 and installed on the horizontal scale disc 81.

[0098] The four pointers of the cross pointer 84 point to 0°, 90°, 180°, and 270° on the horizontal scale disc 81, respectively, indicating that the vertical scale 4 is in a full plumb state, and the parallelism deviation of the vertical scale 4 and the copper wire 82 is not greater than , wherein, is the full machine horizontal adjustment tolerance of the aircraft, usually 0.5 mm.

[0099] There are two horizontal light receiving alignment identification plates 9, as shown in Figure 8 , clamped on the vertical scale 4, and the two horizontal light receiving alignment identification plates 9 can be connected by bolts, and one of the horizontal light receiving alignment identification plates 9 has a lower horizontal marking line for alignment with the horizontal laser light emitted by the laser level 1, and the other horizontal light receiving alignment identification plate 9 has an upper horizontal marking line at the top end extending upward, and the distance between the upper horizontal marking line and the lower horizontal marking line is 100 mm.

[0100] The clamping grooves of the two horizontal light receiving alignment identification plates 9 on the vertical scale 4 are expanded into long circular grooves to the sides.

[0101] , wherein, is the distance from the center of the horizontal light transmission tube 61 to the upper end of the vertical scale 4.

[0102] , wherein, is the interval distance between each calibration cylindrical pin 5.

[0103] , wherein, is the length of the vertical scale 4, is the expected height of the horizontal measurement point on the aircraft.

[0104] , wherein, is the distance from the top end of the vertical probe 7 to the center of the horizontal light transmission tube 61.

[0105] ​The aircraft full machine horizontal measurement device disclosed in the above embodiment is used for horizontal measurement adjustment of the aircraft full machine, and specific reference can be made to the following.

[0106] As shown in Figure 9 , the horizontal measurement adjustment of the aircraft full machine is based on multiple horizontal measurement points below the fuselage:

[0107] Step one, use the jack to preliminarily adjust the horizontal of the aircraft full machine.

[0108] Step two, arrange the laser level 1 below the fuselage, and arrange the horizontal alignment measurement structure 2 below each horizontal measurement point.

[0109] The position of the laser level 1 relative to each horizontal alignment measurement structure 2 should be set to ensure that the horizontal laser light emitted by the laser level 1 can irradiate each horizontal alignment measurement structure 2.

[0110] Step three, measure the vertical distance between the horizontal laser light emitted by the laser level 1 and the ground , and calculate the expected distance between the horizontal laser light and each horizontal measurement point .

[0111] Step four, for each horizontal alignment measurement structure 2, use the vernier caliper to measure the distance between the uppermost horizontal mark line and the outer diameter of the nearest calibration cylindrical pin 5 above the horizontal laser light , adjust the position of the horizontal light receiving alignment identification plate 9 on the vertical scale 4 so that , where is the number of calibration cylindrical pins 5 above the horizontal laser light, is the radius of the calibration cylindrical pin 5, that is, the distance from the lower horizontal mark line to the top end of the vertical probe 7 is equal to the expected distance between the horizontal laser light and each horizontal measurement point .

[0112] Step five, for each horizontal alignment measurement structure 2, use the lifting function of the triangular support 3 to adjust the horizontal alignment measurement structure 2 to be lower than the horizontal measurement point by no less than 100 mm.

[0113] Step six, for each horizontal alignment measurement structure 2, use the pitch function of the triangular support 3 to adjust the vertical scale 4 to be in a completely plumb state, and move the triangular support 3 to make the vertical probe 7 directly face the horizontal measurement point, and repeat the operation until the vertical scale 4 is in a completely plumb state and the vertical probe 7 directly faces the horizontal measurement point.

[0114] Step seven, for each horizontal alignment measurement structure 2, use the lifting function of the triangular support 3 to adjust the top end of the vertical probe 7 to contact the horizontal measurement point, if the lower horizontal mark line is below the horizontal laser light line, use the jack to adjust the corresponding horizontal measurement point on the machine body, if the lower horizontal mark line is above the horizontal laser light line, use the jack to adjust the corresponding horizontal measurement point on the machine body, repeat the operation until the top end of each vertical probe 7 contacts the horizontal measurement point, and the lower horizontal mark line is aligned with the horizontal laser light line, completing the horizontal measurement adjustment of the whole aircraft.

[0115] Based on the multiple horizontal measurement points below the fuselage, the horizontal measurement adjustment of the whole aircraft is carried out, in a specific example, the horizontal measurement points below the fuselage are three, , , the measurement obtains , the calculation obtains , for each horizontal alignment measurement structure 2, , the final adjustment has .

[0116] As shown in Figure 10 , based on the multiple horizontal measurement points laterally of the fuselage, the horizontal measurement adjustment of the whole aircraft is carried out:

[0117] Step one, use the jack to preliminarily adjust the horizontal of the whole aircraft.

[0118] Step two, arrange the laser level 1 below the fuselage, and arrange the horizontal alignment measurement structure 2 laterally of each horizontal measurement point.

[0119] The position setting of the laser level 1 relative to each horizontal alignment measurement structure 2 should ensure that the horizontal laser light line emitted by the laser level 1 can be irradiated on each horizontal alignment measurement structure 2.

[0120] Step three, measure the vertical distance between the horizontal laser light line emitted by the laser level 1 and the ground, and calculate the expected distance between the horizontal laser light line and each horizontal measurement point.

[0121] Step four, for each horizontal alignment measurement structure 2, measure the distance between the lower horizontal mark line and the outer diameter of the nearest calibration cylindrical pin 5 above the horizontal laser light line with the vernier caliper , adjust the position of the horizontal light line receiving alignment identification plate 9 on the vertical scale 4, so that , that is, the distance from the lower horizontal mark line to the center of the horizontal light transmission tube 61 is equal to the expected distance between the horizontal laser light line and each horizontal measurement point.

[0122] Step five, for each horizontal alignment measurement structure 2, adjust the vertical scale 4 to be in a plumb state by using the pitch function of the tripod 3, and adjust the horizontal mark line to be aligned with the horizontal laser light by using the lifting function of the tripod 3.

[0123] Step six, for each horizontal alignment measurement structure 2, adjust the laser light emitted by the laser generator 65 to be directed to the horizontal measurement point, and form a projection point on the aircraft body, and adjust the attitude of the aircraft by using the jack, so that each projection point coincides with the horizontal measurement point. In the specific implementation, the distance between each projection point and the horizontal measurement point can be measured and calculated first, and then the attitude of the aircraft is adjusted by using the jack according to the distance between each projection point and the horizontal measurement point, so that each projection point coincides with the horizontal measurement point, and the horizontal measurement adjustment of the whole aircraft is completed.

[0124] Based on the multiple horizontal measurement points on the lateral side of the aircraft body, the horizontal measurement adjustment of the whole aircraft is performed. In one specific example, the horizontal measurement points on the lateral side of the aircraft body are three, , , the measurement result is , the calculation result is , for each horizontal alignment measurement structure 2, , the final adjustment has .

[0125] The aircraft whole machine horizontal measurement device and the measurement adjustment method disclosed in the above embodiment combine the standard hole pin positioning combined long rod scale + long digital vernier caliper precise length measurement method, use a general tripod for lifting and two-way rotation, combine the long distance hanging line cross scale alignment plumb method, combine the laser horizontal projection scale method, and combine the laser point projection and top contact point positioning method, which can realize the horizontal high-precision measurement adjustment of different types of aircraft whole machine.

[0126] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings. Those skilled in the art should understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without deviating from the principles of the present application, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical solutions after these changes or replacements will fall within the protection scope of the present application.

Claims

1. An aircraft full-scale level measurement device, characterized in that, The laser level meter (1) comprises a horizontal alignment measurement structure (2); The horizontal alignment measurement structure (2) comprises a triangular support (3), a vertical scale (4), a calibration cylindrical pin (5), a horizontal probe (6), a vertical probe (7), a plumb assembly (8), and a horizontal light receiving alignment identification plate (9); The triangular support (3) is an observation tripod capable of lifting, pitching, and axial rotation; The vertical scale (4) is connected to the triangular support (3); The calibration cylindrical pin (5) is arranged on the vertical scale (4) at equal intervals; The horizontal probe (6) comprises a horizontal light pipe (61), a first light transmission target plate (62), a second light transmission target plate (63), a horizontal support rod (64), and a laser generator (65); The horizontal light pipe (61) is connected to the vertical scale (4) and is above the calibration cylindrical pin (5); The first light transmission target plate (62) and the second light transmission target plate (63) are thin circular plates with a cross-shaped target slot in the center, and a light transmission hole is arranged at the cross-shaped intersection position of the cross-shaped target slot; the first light transmission target plate (62) and the second light transmission target plate (63) are arranged at the two ends of the horizontal light pipe (61), respectively; The horizontal support rod (64) is connected to the vertical scale (4) at one end and is provided with the laser generator (65) at the other end, and the laser generator (65) is opposite to the light transmission hole on the first light transmission target plate (62); The vertical probe (7) is connected to the upper end of the vertical scale (4); The plumb assembly (8) comprises a horizontal scale disc (81), a copper wire (82), a plumb (83), and a cross-shaped pointer (84); The horizontal scale disc (81) is connected to the vertical scale (4) and has a center hole thereon; The upper end of the copper wire (82) is connected to the vertical scale (4), and the lower end penetrates through the center hole to connect the plumb (83); The cross-shaped pointer (84) is sleeved on the copper wire (82) and is installed on the horizontal scale disc (81); The horizontal light receiving alignment identification plate (9) is clamped on the vertical scale (4) and is connected by a bolt, and one of the two horizontal light receiving alignment identification plates (9) has a lower horizontal marker line for alignment with the horizontal laser light emitted by the laser level meter (1).

2. The aircraft full-scale horizontal measurement device of claim 1, wherein, The laser level meter (1) is provided with a height-adjustable support; The vertical scale (4) is composed of multiple segments; The vertical scale (4) has multiple horizontally calibrated holes arranged at equal intervals, and each calibration cylindrical pin (5) penetrates through each horizontally calibrated hole.

3. The aircraft full-scale horizontal measurement device of claim 2, wherein, The vertical scale (4) has a horizontal positioning hole, and the horizontal light pipe (61) penetrates through the horizontal positioning hole; The horizontal light pipe (61) is above the calibration cylindrical pin (5) and is arranged at equal intervals with the calibration cylindrical pin (5); The width of the cross-shaped target slot on the first light transmission target plate (62) and the second light transmission target plate (63) is 0.1 mm, the diameter of the light transmission hole on the first light transmission target plate (62) is 0.2 mm, and the diameter of the light transmission hole on the second light transmission target plate (63) is not less than twice the diameter of the light transmission hole on the first light transmission target plate (62).

4. The aircraft full machine horizontal measurement device according to claim 3, characterized in that, The laser generator (65) is a pen tube type red laser generator.

5. The aircraft full-scale horizontal measurement device of claim 4, wherein, The top end of the vertical probe (7) is processed into a conical structure, and the tip of the conical structure is processed into a circular truncated cone with a diameter of 0.2 mm; The bottom end of the vertical probe (7) is a cylindrical segment with a length not less than 2 mm, and a circular tube segment is connected below the cylindrical segment and inserted into a cylindrical hole opened at the upper end of the vertical scale (4).

6. The aircraft full-scale horizontal measurement device of claim 5, wherein, The four pointers of the cross pointer (84) respectively point to 0°, 90°, 180° and 270° on the horizontal scale disc (81), marking that the vertical scale (4) is in a completely plumb state.

7. The aircraft full-scale horizontal measurement device of claim 6, wherein, In the state of complete plumb, the parallelism deviation between the vertical scale (4) and the copper wire (82) is not greater than 0.1 mm wherein, is the horizontal adjustment tolerance of the whole aircraft.

8. The aircraft full-scale horizontal measurement device of claim 7, wherein, wherein, is the distance from the center of the horizontal light pipe (61) to the upper end of the vertical scale (4); wherein, is the spacing distance between each calibrated cylindrical pin (5); wherein, is the length of the vertical scale (4), is the desired height of the horizontal measuring point on the aircraft; wherein, is the distance from the top of the vertical probe (7) to the center of the horizontal light pipe (61).

9. A method of adjusting the levelness of an aircraft, implemented on the basis of the device for measuring the levelness of an aircraft according to claim 8, characterized in that, When adjusting the horizontal measurement of the aircraft full machine based on multiple horizontal measurement points below the fuselage, including: Step one, use the jack to preliminarily adjust the horizontal of the aircraft full machine; Step two, arrange the laser level (1) below the fuselage, and arrange the horizontal alignment measurement structure (2) below each horizontal measurement point; Step three, measure the vertical distance between the horizontal laser light emitted by the laser level (1) and the ground and calculate the expected distance between the horizontal laser light and each horizontal measuring point ; Step four, for each horizontal alignment measurement structure (2), measure the distance between the nearest calibration cylinder pin (5) above the horizontal laser light line and the lower horizontal marking line with a vernier caliper Adjust the position of the alignment identification board (9) receiving the horizontal light line on the vertical scale (4) so that wherein is the number of calibration cylinder pins (5) above the horizontal laser light line, is the radius of the calibration cylinder pin (5); Step five, for each horizontal alignment measurement structure (2), use the lifting function of the triangular support (3) to adjust the horizontal alignment measurement structure (2) to be lower than the horizontal measurement point by not less than 100 mm; Step six, for each horizontal alignment measurement structure (2), use the pitch function of the triangular support (3) to adjust the vertical scale (4) to reach a completely plumb state, and move the triangular support (3) to make the vertical probe (7) directly face the horizontal measurement point, and repeat the operation until the vertical scale (4) is in a completely plumb state and the vertical probe (7) directly faces the horizontal measurement point; Step seven, for each horizontal alignment measurement structure (2), use the lifting function of the triangular support (3) to adjust the top end of the vertical probe (7) to contact the horizontal measurement point, if the lower horizontal mark line is below the horizontal laser light, use the jack to adjust the corresponding horizontal measurement point on the fuselage to be higher, if the lower horizontal mark line is above the horizontal laser light, use the jack to adjust the corresponding horizontal measurement point on the fuselage to be lower, repeat the operation until the top end of each vertical probe (7) contacts the horizontal measurement point, and the lower horizontal mark line is aligned with the horizontal laser light.

10. The aircraft full-scale leveling adjustment method of claim 9, wherein, When adjusting the horizontal measurement of the aircraft full machine based on multiple horizontal measurement points laterally of the fuselage, including: Step one, use the jack to preliminarily adjust the horizontal of the aircraft full machine; Step two, arrange the laser level (1) below the fuselage, and arrange the horizontal alignment measurement structure (2) laterally of each horizontal measurement point; Step three, measure the vertical distance between the horizontal laser light emitted by the laser level (1) and the ground and calculate the expected distance between the horizontal laser light and each horizontal measuring point ; Step four, for each horizontal alignment measurement structure (2), measure the distance between the nearest calibration cylinder pin (5) above the outer diameter and the lower horizontal marking line with a vernier caliper Adjust the position of the alignment identification plate (9) on the vertical ruler (4) for the horizontal light line to receive the position of the alignment identification plate (9) on the vertical ruler (4) so that ; Step five, for each horizontal alignment measurement structure (2), use the pitch function of the triangular support (3) to adjust the vertical scale (4) to reach a completely plumb state, and use the lifting function of the triangular support (3) to adjust the horizontal mark line to be aligned with the horizontal laser light; Step six, for each horizontal alignment measurement structure (2), use the rotation function of the triangular support (3) to adjust the laser beam emitted by the laser generator (65) to be directed to the horizontal measurement point, and use the jack to adjust the attitude of the aircraft to make each projection point coincide with the horizontal measurement point.

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