Engine simulation assembly detection device and use method

Abstract

The invention provides an engine simulation assembly detection device and a using method. The engine simulation assembly detection device comprises a supporting frame and a lifting frame. The lifting frame comprises a main beam, an engine fixing and detecting assembly, a positioning assembly and a lifting appliance fixing assembly; the lifting frame is fixed to the supporting frame. The engine fixing and detecting assembly is arranged below the main beam, the engine is fixed to the lifting frame through the engine fixing and detecting assembly, and the engine fixing and detecting assembly is used for fixing the engine and judging whether the position of the air inlet pipeline is qualified or not; the positioning assembly comprises a plurality of sub-reference surfaces, the sub-reference surfaces are all arranged on the hoisting frame, and the positioning assembly is used for constructing a measurement rectangular coordinate system corresponding to the engine simulation assembly detection device; the lifting appliance fixing assembly is arranged at the top of the main beam and used for fixing the lifting frame and the truss lifting appliance. The device has the functions of hanging the engine and providing a reference for checking and adjusting the coaxiality of intake and exhaust of the engine. The sub-reference surfaces are arranged on the lifting frame, so that the measuring reference of each engine is kept consistent.

Description

Technical Field

[0001] The present invention relates to the technical field of engine assembly, and particularly to an engine simulation assembly detection device and a usage method thereof. Background Art

[0002] For certain models of engines during the overall assembly of an aircraft, the intake and exhaust ducts of the engine need to be first installed on the aircraft fuselage and then docked with the engine body. Due to tolerance accumulation and assembly effects, the engine may be non - coaxial with the intake and exhaust ducts, resulting in the engine being unable to be connected to the intake, exhaust ducts and pipes on the aircraft.

[0003] To solve this problem, a set of devices is required to conduct factory inspections on the engine to determine whether the intake and exhaust edges and certain pipe interfaces of the engine meet the design requirements. However, since the engine reference is located at the main mounting node, auxiliary mounting node and two lifting lugs, the reference plane is very small, and it is impossible to use the reference plane for positioning in the traditional way and detect the holes on the intake and exhaust edges with position pins. Therefore, a scanning detection method is considered to scan the engine, and the generated physical features are then compared with the theoretical model to find the deviations. If the engine is placed on a transport vehicle and directly scanned with a scanner, because the engine is hung on the aircraft and is affected by its weight, and placing it on the transport vehicle ignores the weight effect, the output result will be untrue. Summary of the Invention

[0004] In view of this, the embodiments of the present specification provide an engine simulation assembly detection device and a usage method thereof, aiming to achieve a rigid entity that reflects the connection between the aircraft pylon and the engine mounting node at a 1:1 real size, having the function of hanging the engine and providing a reference for inspecting and adjusting the coaxiality of the engine intake and exhaust.

[0005] The embodiments of the present specification provide the following technical solutions:

[0006] An engine simulation assembly detection device includes:

[0007] A support frame and a lifting frame;

[0008] The lifting frame includes a main beam, an engine fixing and detecting component, a positioning component and a sling fixing component;

[0009] The lifting frame is fixed to the support frame;

[0010] The engine fixing and detecting component is arranged below the main beam. The engine is fixed to the lifting frame through the engine fixing and detecting component. The engine fixing and detecting component is used to fix the engine and determine whether the position of the intake pipe is qualified;

[0011] The positioning component includes multiple sub-reference planes, all of which are arranged on the lifting frame. The positioning component is used to construct the measurement rectangular coordinate system corresponding to the engine simulation assembly detection device;

[0012] The sling fixing component is arranged on the top of the main beam and is used to fix the lifting frame and the gantry crane sling.

[0013] Further, the sling fixing component includes a backing plate, a lifting lug and an anti-rotation pin;

[0014] The backing plate, the lifting lug and the anti-rotation pin are all arranged on the top of the lifting frame;

[0015] When moving the lifting frame, place the gantry crane sling on the backing plate, connect the lifting lug to the pin device of the gantry crane sling, and insert the anti-rotation pin into the positioning device of the gantry crane sling.

[0016] Further, the engine fixing and detecting component includes a front mounting seat, a rear mounting seat, a positioning pin, a plug pin, a first pin shaft, a second pin shaft, a measuring pin, a bracket and a pull rod;

[0017] The front mounting seat and the rear mounting seat are fixedly spaced below the main beam;

[0018] The pull rod and the positioning pin are fixed below the front mounting seat, and the first pin shaft is arranged on the pull rod;

[0019] The plug pin is fixed below the main beam. When the lifting frame is fixed to the support frame, the plug pin is inserted into the support frame;

[0020] The second pin shaft and the measuring pin are both arranged on the rear mounting seat;

[0021] The bracket is fixed to the main beam in the vertical direction.

[0022] Further, the support frame includes a frame, columns, universal wheels, directional wheels and adjustable supports;

[0023] The universal wheels and the directional wheels are both fixed to the bottom of the frame. The columns are arranged above the frame, and the adjustable supports pass through the frame in the vertical direction.

[0024] Further, the sub-reference planes include 3 sub-reference planes arranged in the vertical direction of the lifting frame and 3 sub-reference planes arranged in the horizontal direction of the lifting frame;

[0025] The vertical sub-reference planes form the vertical plane of the measurement rectangular coordinate system, the horizontal sub-reference planes form the horizontal plane of the measurement rectangular coordinate system, and the center of one of the vertical sub-reference planes is used as the origin of the measurement rectangular coordinate system.

[0026] A usage method of an engine simulation assembly detection device, which uses the engine simulation assembly detection device to perform simulation assembly detection on the engine, includes the following steps:

[0027] After moving the support frame to the specified area, fix the support frame to the ground and adjust the columns so that the upper end faces of the columns are on the same horizontal line;

[0028] Lift the engine onto the lifting frame and fix the lifting frame to the support frame;

[0029] Establish a measurement rectangular coordinate system using the sub-reference plane of the lifting frame and verify whether the perpendicularity of the measurement rectangular coordinate system meets the requirements;

[0030] If the perpendicularity meets the requirements, calculate and record the engine position data based on the engine theoretical coordinate system through the measurement rectangular coordinate system;

[0031] Insert the measurement pin into the interface of the intake pipe. If it can be inserted, the position of the intake pipe is qualified; otherwise, the position of the intake pipe is unqualified.

[0032] Further, calculate and record the engine position data based on the engine theoretical coordinate system through the measurement rectangular coordinate system, including:

[0033] After fixing the lifting frame with the engine to the support frame, obtain the first coordinate values of the positioning pin, the first pin shaft, and the second pin shaft based on the engine theoretical coordinate system;

[0034] Obtain the second coordinate values of the positioning pin, the first pin shaft, and the second pin shaft based on the measurement rectangular coordinate system;

[0035] Calculate the difference between the first coordinate value and the second coordinate value, and use the difference as the reference adjustment data;

[0036] Scan the measurement objects of the engine to obtain the measured engine data based on the measurement rectangular coordinate system, where the measurement objects of the engine include the intake and exhaust edges and the pipe joints of the engine;

[0037] Calculate the engine position data based on the engine theoretical coordinate system using the reference adjustment data and the measured engine data.

[0038] Further, verify whether the perpendicularity of the measurement rectangular coordinate system meets the requirements, including:

[0039] If the perpendicularity of the measurement rectangular coordinate system is less than or equal to 0.04°, the perpendicularity meets the requirements.

[0040] Further, after moving the support frame to the specified area, fix the support frame to the ground and adjust the columns so that the upper end faces of the columns are on the same horizontal line, including:

[0041] Move the support frame to the use area through the universal wheels and the directional wheels, and use the adjusting bolts to disengage the universal wheels and the directional wheels from the ground;

[0042] Leveling support frame, place a bubble level on the top of the upper end face of the support column of the support frame;

[0043] Use the bubble level to detect whether the upper end faces of all support columns of the support frame are on the same horizontal line, and turn the adjusting bolt until the upper end faces of all support columns are on the same horizontal line.

[0044] Further, hoist the engine onto the hoisting frame and fix the hoisting frame to the support frame, including:

[0045] Place the gantry crane sling on the backing plate, connect the pin of the gantry crane sling to the lifting lug, insert the anti-rotation pin into the positioning ring of the gantry crane sling, hoist the hoisting frame and move it above the engine, lower the hoisting frame, and fix the engine to the hoisting frame through the first pin shaft, the second pin shaft and the positioning pin;

[0046] Move the hoisting frame with the engine fixed above the support frame, slowly lower the engine, and then place the engine and the hoisting frame on the support frame through the cooperation of the pin and the pillar hole shaft.

[0047] Compared with the prior art, the at least one technical solution adopted in the embodiments of this specification can achieve at least the following beneficial effects:

[0048] The aero-engine assembly detection device in the embodiments of the present invention reflects the rigid entity of the connection between the aircraft pylon and the engine mounting section in a 1:1 real size, and uses connectors with the same fitting accuracy as the aircraft to connect the engine. The hoisting frame is used to hoist the engine, and the support frame is used to place the hoisting frame and the engine. The device has the function of hanging the engine and providing a reference for inspecting and adjusting the coaxiality of the engine intake and exhaust. The sub-reference plane is set on the hoisting frame to ensure that the measurement reference for each engine is consistent. Description of the Drawings

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0050] Figure 1 It is the overall structure diagram of the engine simulation assembly detection device in the embodiments of the present invention;

[0051] Figure 2 It is the structure diagram of the support frame in the embodiments of the present invention;

[0052] Figure 3 It is the structure diagram of the hoisting frame in the embodiments of the present invention;

[0053] Figure 4Schematic diagram of the connection between the support frame and the hoisting frame in the embodiment of the present invention;

[0054] Figure 5 Schematic diagram of the measurement rectangular coordinate system composed of sub-reference planes in the embodiment of the present invention;

[0055] Figure 6 Schematic diagram of the total deformation of the single-beam structure;

[0056] Figure 7 Schematic diagram of the total deformation of the frame structure;

[0057] Figure 8 Schematic diagram of the total deformation of the double-beam structure;

[0058] Figure 9 Schematic diagram of the total deformation when the beam height of the single-beam structure is the first height;

[0059] Figure 10 Schematic diagram of the total deformation when the beam height of the single-beam structure is the second height;

[0060] Figure 11 Schematic diagram of the total deformation when the beam height of the single-beam structure is the third height;

[0061] Figure 12 Schematic diagram of the total deformation when the beam width of the single-beam structure is the first width;

[0062] Figure 13 Schematic diagram of the total deformation when the beam width of the single-beam structure is the second width;

[0063] Figure 14 Schematic diagram of the total deformation when the beam width of the single-beam structure is the third width;

[0064] Figure 15 Schematic diagram of the total deformation when the thickness of the middle plate of the single-beam structure is the first thickness;

[0065] Figure 16 Schematic diagram of the total deformation when the thickness of the middle plate of the single-beam structure is the second thickness;

[0066] Figure 17 Schematic diagram of the total deformation when the thickness of the middle plate of the single-beam structure is the third thickness;

[0067] Figure 18 Schematic diagram of the deformation of the reference point in the Z-axis direction;

[0068] Figure 19 Schematic diagram of the deformation of the reference point in the Y-axis direction;

[0069] Figure 20 Schematic diagram of the deformation of the origin in the X-axis direction.

[0070] Reference numerals in the drawings: 1, support frame; 101, frame; 102, column; 103, universal wheel; 104, directional wheel; 105, adjustable support; 2, lifting frame; 201, main beam; 202, lifting lug; 203, anti-rotation pin; 204, front mounting seat; 205, rear mounting seat; 206, positioning pin; 207, backing plate; 208, bracket; 209, insertion pin; 210, first pin shaft; 211, second pin shaft; 212, sub-reference plane; 213, measuring pin; 214, tie rod. Detailed implementation mode

[0071] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0072] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0073] A rigid entity reflecting the connection between the aircraft pylon and the engine mounting section is embodied using a 1:1 real size, and a connecting piece with the same fitting accuracy as that of the aircraft is used to connect the engine. The reference of the engine is converted to the detection device for scanning use.

[0074] As Figure 1 shown, an engine simulation assembly detection device includes a support frame 1 and a lifting frame 2. The lifting frame 2 is fixed to the support frame 1.

[0075] As Figure 2 shown, the support frame 1 includes a frame 101, columns 102, universal wheels 103, directional wheels 104, and adjustable supports 105.

[0076] Both the universal wheels 103 and the directional wheels 104 are fixed to the bottom of the frame 101, the columns 102 are arranged above the frame 101, and the adjustable supports 105 pass through the frame 101 in the vertical direction.

[0077] As Figure 1 and Figure 3 shown, the lifting frame 2 includes a main beam 201, an engine fixing and detecting assembly, a positioning assembly, and a sling fixing assembly.

[0078] The engine fixing and detecting assembly is arranged below the main beam 201, the engine is fixed to the lifting frame 2 through the engine fixing and detecting assembly, and the engine fixing and detecting assembly is used to fix the engine and judge whether the position of the intake pipeline is qualified.

[0079] The positioning assembly includes a plurality of sub-reference planes 212, and the sub-reference planes 212 are all arranged on the lifting frame 2. The positioning assembly is used to construct a measurement rectangular coordinate system corresponding to the engine simulation assembly detection device.

[0080] As Figure 3As shown, the sling fixing component is arranged on the top of the main beam 201 and is used to fix the lifting frame 2 and the overhead crane sling. The sling fixing component includes a backing plate 207, a lifting lug 202 and an anti-rotation pin 203. The backing plate 207, the lifting lug 202 and the anti-rotation pin 203 are all arranged on the top of the lifting frame 2.

[0081] When moving the lifting frame 2, place the overhead crane sling on the backing plate 207, connect the lifting lug 202 to the pin device of the overhead crane sling, and insert the anti-rotation pin 203 into the positioning device of the overhead crane sling.

[0082] The engine fixing and detecting component includes a front mounting seat 204, a rear mounting seat 205, a positioning pin 206, a plug pin 209, a first pin shaft 210, a second pin shaft 211, a measuring pin 213, a bracket 208 and a pull rod 214.

[0083] The front mounting seat 204 and the rear mounting seat 205 are fixedly arranged at intervals under the main beam 201. The pull rod 214 and the positioning pin 206 are fixed under the front mounting seat 204, and the first pin shaft 210 is arranged on the pull rod 214. The plug pin 209 is fixed under the main beam 201. As Figure 4 shown, when the lifting frame 2 is fixed to the support frame 1, the plug pin 209 is inserted into the main beam 201 of the support frame 1. The second pin shaft 211 and the measuring pin 213 are both arranged on the rear mounting seat 205. The bracket 208 is fixed on the main beam 201 in the vertical direction.

[0084] As Figure 5 shown, the sub-reference plane 212 includes 3 sub-reference planes 212 arranged in the vertical direction of the lifting frame 2 and 3 sub-reference planes 212 arranged in the horizontal direction of the lifting frame 2.

[0085] The vertical sub-reference plane 212 forms the vertical plane of the measuring rectangular coordinate system, the horizontal sub-reference plane 212 forms the horizontal plane of the measuring rectangular coordinate system, and the center of one vertical sub-reference plane 212 is used as the origin of the measuring rectangular coordinate system.

[0086] The main beam 201 is one or a combination of a single beam, a frame and a double beam. The material and size of the main beam 201 are determined according to the simulation verification test. In the simulation verification test, the standard for the main beam 201 to be qualified is that the deformation difference in each direction of the sub-reference plane 212 in the measuring rectangular coordinate system is less than 0.01 mm.

[0087] Three structures (single beam, frame, double beam) of the main beam 201 are selected for comparison. Under the condition of selecting the same material and applying the same force, the specific results are as follows:

[0088] The single beam structure has a beam height of 300 mm and a beam width of 190 mm, is welded with a 20-mm-thick plate, has internal stiffeners, and the total deformation is as Figure 6 shown.

[0089] The beam of the frame structure has a height of 300 mm and a width of 190 mm, and is welded with 20-mm-thick plates, with reinforcing ribs inside. The total deformation is as Figure 7 shown.

[0090] The double-beam structure has a height of 300 mm and a width of 190 mm, and is welded with 20-mm-thick plates, with reinforcing ribs inside. The total deformation is as Figure 8 shown.

[0091] By comparing the single beam, the frame and the double beam through Table 1, it is found that the deformations of the three are basically the same, and the deformation problem cannot be solved. At the same time, the frame and the double beam have additional beams that affect the on-site scanning operation. Therefore, the single-beam structure can be selected as the optimal solution.

[0092] Table 1 Total deformation of the three structures

[0093] Structure Name Beam Height (mm) Beam Width (mm) Structure Composition Total Deformation (mm) Single Beam 300 190 Welded from 20-mm-thick plates 0.167 Frame 300 190 Welded from 20-mm-thick plates 0.178 Double Beam 300 190 Welded from 20-mm-thick plates 0.181

[0094] Optimization comparison process of the single-beam structure:

[0095] Taking the height of the beam, the width of the beam, and the thickness of the middle plate of the beam as variables respectively, the same material is selected and the same force is applied for comparison.

[0096] I. Change in beam height.

[0097] Type 1: 40 (middle plate) X 20 (other plates) X 400 (beam width) X (700) middle beam X 600 (side beams), total deformation as Figure 9 shown.

[0098] Type 2: 40 (middle plate) X 20 (other plates) X 400 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as Figure 10 shown.

[0099] Type 3: 40 (middle plate) X 20 (other plates) X 400 (beam width) X (500) middle beam X 400 (side beams), total deformation as Figure 11 shown.

[0100] It is found through Table 2 that when the main beam is 500 high and the side beams are 400 high, the deformation is too large; when the main beam is 700 high and the side beams are 600 high, the effect is better, but it is too bulky. Finally, the main beam with a height of 600 and the side beam with a height of 500 are selected.

[0101] Table 2 Influence of beam height change on deformation

[0102] Serial Number Height of Middle Beam (mm) Height of Side Beams (mm) Total Deformation (mm) 1 700 600 0.054 2 600 500 0.066 3 500 400 0.089

[0103] II. Change in beam width.

[0104] Type 1: 40 (middle plate) X 20 (other plates) X 300 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as shown in Figure 12 shown.

[0105] Type 2: 40 (middle plate) X 20 (other plates) X 400 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as shown in Figure 13 shown.

[0106] Type 3: 40 (middle plate) X 20 (other plates) X 500 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as shown in Figure 14 shown.

[0107] It is found from Table 3 that the deformation of the beam width of 300 is relatively large, and the change in the deformation amount when the width is changed from 400 to 500 has little effect. The selected beam width is 400.

[0108] Table 3 Influence of beam width change on deformation

[0109]

[0110]

[0111] III. Change in the thickness of the middle plate

[0112] Type 1: 30 (middle plate) X 20 (other plates) X 400 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as shown in Figure 15 shown.

[0113] Type 2: 40 (middle plate) X 20 (other plates) X 400 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as shown in Figure 16 shown.

[0114] Type 3: 50 (middle plate) X 20 (other plates) X 400 (beam width) X 600 (middle beam) X 500 (side beams), total deformation as shown in Figure 17 shown.

[0115] It is found from Table 4 that when the thickness of the middle plate of the beam is changed from 40 to 50, the change in the deformation amount of the thickness has little effect. The selected thickness of the middle plate is 40. It is found through the comparison of the three that the higher the height of the beam, the smaller the deformation amount. After the beam width and the thickness of the middle plate are increased by a certain number, the influence on the deformation is relatively small.

[0116] Table 4 Influence of middle plate thickness change on deformation

[0117] Serial Number Thickness of Middle Plate (mm) Total Deformation (mm) 1 30 0.0742 2 40 0.0668 3 50 0.0625

[0118] The selection of the final lifting tool is as follows: the main beam is 600 in height and 400 in width; the side beam of the main beam is 500 in height and 400 in width. The thickness of the plate between the main beam and the side beam is 40. The thickness of the remaining plates is 20mm. The material is selected as 42CrMo welded together.

[0119] In the overall force analysis, the height of the main beam 201 is set to be between 590 and 610, and the width of the main beam 201 is between 390 and 410. The material of the lifting frame 2 is 42CrMo steel. Among them, the density of the material is 7850 KG / M3, the Poisson's ratio of the material is 0.28, and the Young's modulus of the material is 212 GPa. The material of the support frame 1 is carbon structural steel. Among them, the density of the material is 7860 KG / M3, the Poisson's ratio of the material is 0.288, and the Young's modulus of the material is 212 GPa. As Figure 18 , Figure 19 , Figure 20 shown, the deformation differences of the 6 small reference planes in all directions are within the range of 0.01, and the deformations are basically the same.

[0120] Using the engine simulation assembly detection device of the embodiment of the present invention to perform simulation assembly detection on the engine, including the following steps:

[0121] After moving the support frame 1 to the designated area, fix the support frame 1 to the ground, and adjust the column 102 so that the upper end surfaces of the column 102 are on the same horizontal line;

[0122] Lift the engine onto the lifting frame 2 and fix the lifting frame 2 to the support frame 1;

[0123] Use the sub-reference plane 212 of the lifting frame 2 to establish a measurement rectangular coordinate system, and verify whether the perpendicularity of the measurement rectangular coordinate system meets the requirements;

[0124] If the perpendicularity meets the requirements, calculate and record the engine position data based on the engine theoretical coordinate system through the measurement rectangular coordinate system. If the perpendicularity of the measurement rectangular coordinate system is less than or equal to 0.04°, then the perpendicularity meets the requirements; otherwise, the perpendicularity does not meet the requirements.

[0125] Insert the measurement pin 213 into the interface of the intake pipe. If it can be inserted, the position of the intake pipe is qualified; otherwise, the position of the intake pipe is unqualified.

[0126] Specifically, calculating and recording the engine position data based on the engine theoretical coordinate system through the measurement rectangular coordinate system includes:

[0127] After fixing the engine lifting frame 2 to the support frame 1, obtain the first coordinate values of the positioning pin 206, the first pin shaft 210, and the second pin shaft 211 based on the engine theoretical coordinate system;

[0128] Obtaining second coordinate values of the positioning pin 206 , the first pin shaft 210 , and the second pin shaft 211 based on the measurement rectangular coordinate system;

[0129] Calculate the difference between the first coordinate value and the second coordinate value, and use the difference as the reference adjustment data;

[0130] Scanning the measurement object of the engine to obtain actual measurement data of the engine based on the measurement rectangular coordinate system, wherein the measurement object of the engine includes the intake and exhaust edges and pipe joints of the engine;

[0131] The engine position data based on the engine theoretical coordinate system is calculated using the benchmark adjustment data and the engine measured data.

[0132] Specifically, after the support frame is moved to the designated area, the support frame is fixed to the ground, and the columns are adjusted so that the upper end surfaces of the columns are located on the same horizontal line, including:

[0133] Move the support frame 1 to the use area by using the universal wheels 103 and the directional wheels 104, and make the universal wheels 103 and the directional wheels 104 leave the ground by adjusting the supports 105;

[0134] Level the support frame 1, and place a bubble level on the top of the upper end surface of the column 102 of the support frame 1;

[0135] Use a bubble level to check whether the upper end surfaces of all the columns 102 of the support frame 1 are on the same horizontal line, and turn the adjustment support 105 until the upper end surfaces of all the columns 102 are on the same horizontal line.

[0136] Specifically, the engine is hoisted onto the hoisting frame 2, and the hoisting frame 2 is fixed to the support frame 1, including:

[0137] Place the gantry crane hoist on the pad 207, connect the latch of the gantry crane hoist with the lifting lug 202, insert the anti-rotation pin 203 into the positioning ring of the gantry crane hoist, lift the hoisting frame 2 and move it above the engine, put down the hoisting frame 2, and fix the engine to the hoisting frame 2 through the first pin shaft 210, the second pin shaft 211 and the positioning pin 206;

[0138] Move the hanging frame 2 with the engine fixed on it to the top of the supporting frame 1, slowly lower the engine, and then place the engine and the hanging frame 2 on the supporting frame 1 by matching the latch 209 with the hole axis of the column 102.

[0139] Beneficial effects of the embodiments of the present invention:

[0140] The aviation engine assembly inspection device according to the embodiment of the present invention embodies a rigid entity connecting the aircraft pylon and the engine mounting section in a 1:1 real size, and connects the engine with connectors having the same mating accuracy as the aircraft. The whole device is designed into two parts. The upper part is a hoisting rack for hoisting the engine, and the lower part is a support rack for placing the hoisting rack and the engine. The device has the functions of hoisting the engine and providing a reference for inspecting and adjusting the coaxiality of the engine intake and exhaust. The sub-reference plane is arranged on the hoisting rack to ensure that the measurement reference for each engine is consistent; after the device bears the weight of the engine of several tons, the reference deformation amount meets the measurement accuracy requirements; the settings of the reference in the three directions of the length, width and height of the engine meet the envelope requirements. The device can be transferred among various workshops. The engine is heavy. When hoisting, to prevent the center of gravity from being uneven, there are two lifting points designed on the hoisting rack, and the center of gravity of the hoisting rack and the engine is calculated to coincide, and then two positioning shafts are used to prevent the engine from flipping with the hoisting rack. A position measuring pin for the engine intake pipe is designed at the rear of the device for easy inspection and adjustment.

[0141] The measurement rectangular coordinate system constituted by the reference (sub-reference plane) is used as the reference coordinate system. When bearing the weight of the engine, the deformation amount plus the accuracy error of the measurement system, the system error of the whole system meets 1 / 3 - 1 / 5 of the measurement tolerance. The reference (sub-reference plane) is arranged on the hoisting rack, and the connection method with each engine is the same, which can ensure that the reference is the same when measuring each engine. The six reference points can meet the requirements for establishing a measurement rectangular coordinate system by a tracking three-dimensional scanner, and their positions can be scanned; after the main beam of the hoisting rack is simulated and verified through a simulation verification test, the size of the hoisting rack is determined to ensure that the hoisting rack has sufficient strength. After the hoisting rack suspends the engine, the deformation difference of the six reference points in each direction is within the range of 0.01, ensuring the accuracy of the measurement reference. At the same time, the settings of the reference (sub-reference plane) in the three directions of the length, width and height of the engine meet the envelope requirements; the connection parameters of the engine simulation assembly inspection device according to the embodiment of the present invention are the same as those of the aircraft pylon, which can truly simulate the assembly state of the engine on the aircraft. Both the hoisting rack and the support rack adopt a frame structure, having enough space for the scanner to scan and measure features, and the measured elements can be scanned without being blocked.

[0142] As mentioned above, the above are only specific embodiments of the present invention, and the scope of the invention implementation cannot be limited by them. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the present invention patent, should still fall within the scope covered by this patent. In addition, the technical features in the present invention can be freely combined with each other between technical features, between technical features and technical solutions, and between technical solutions.

Claims

1. An engine simulation assembly detection device, characterized in that Comprising: A support frame (1) and a lifting frame (2); The lifting frame (2) includes a main beam (201), an engine fixing and detecting assembly, a positioning assembly, and a spreader fixing assembly; The lifting frame (2) is fixed to the support frame (1); The engine fixing and detecting assembly is arranged below the main beam (201), the engine is fixed to the lifting frame (2) through the engine fixing and detecting assembly, and the engine fixing and detecting assembly is used for fixing the engine and judging whether the position of the intake pipe is qualified; The positioning assembly includes a plurality of sub-reference planes (212), and the sub-reference planes (212) are all arranged on the lifting frame (2), and the positioning assembly is used for constructing a measurement rectangular coordinate system corresponding to the engine simulation assembly detecting device; The spreader fixing assembly is arranged on the top of the main beam (201) and is used for fixing the lifting frame (2) and the gantry crane spreader.

2. The engine simulation assembly detection device according to claim 1, wherein The spreader fixing assembly includes a backing plate (207), a lifting lug (202), and an anti-rotation pin (203); The backing plate (207), the lifting lug (202), and the anti-rotation pin (203) are all arranged on the top of the lifting frame (2); When moving the lifting frame (2), place the gantry crane spreader on the backing plate (207), connect the lifting lug (202) with the pin device of the gantry crane spreader, and insert the anti-rotation pin (203) into the positioning device of the gantry crane spreader.

3. The engine simulation assembly detection device according to claim 1, characterized in that, The engine fixing and detecting assembly includes a front mounting seat (204), a rear mounting seat (205), a positioning pin (206), a plug pin (209), a first pin shaft (210), a second pin shaft (211), a measuring pin (213), a bracket (208), and a pull rod (214); The front mounting seat (204) and the rear mounting seat (205) are fixedly spaced below the main beam (201); The pull rod (214) and the positioning pin (206) are fixed below the front mounting seat (204), and the first pin shaft (210) is arranged on the pull rod (214); The plug pin (209) is fixed below the main beam (201), and when the lifting frame (2) is fixed to the support frame (1), the plug pin (209) is inserted into the support frame (1); The second pin shaft (211) and the measuring pin (213) are both arranged on the rear mounting seat (205); The bracket (208) is fixed to the main beam (201) in the vertical direction.

4. The engine simulation assembly detection device according to claim 1, characterized in that, The support frame (1) includes a frame (101), columns (102), universal wheels (103), directional wheels (104), and adjusting supports (105); The universal wheels (103) and the directional wheels (104) are both fixed to the bottom of the frame (101), the columns (102) are arranged above the frame (101), and the adjusting supports (105) pass through the frame (101) in the vertical direction.

5. The engine simulation assembly detection device according to claim 1, characterized in that, The sub-reference planes (212) include 3 sub-reference planes (212) arranged in the vertical direction of the lifting frame (2) and 3 sub-reference planes (212) arranged in the horizontal direction of the lifting frame (2); The vertical plane of the measurement rectangular coordinate system is formed by the sub-reference plane (212) in the vertical direction, the horizontal plane of the measurement rectangular coordinate system is formed by the sub-reference plane (212) in the horizontal direction, and the center of one sub-reference plane (212) in the vertical direction is used as the origin of the measurement rectangular coordinate system.

6. A method for using an engine simulation assembly detection device, wherein the method uses the engine simulation assembly detection device according to any one of claims 1 to 5 to perform simulation assembly detection on an engine, and is characterized in that, It includes the following steps: After moving the support frame (1) to the designated area, fix the support frame (1) to the ground and adjust the column (102) so that the upper end surfaces of the columns (102) are on the same horizontal line; Lift the engine onto the lifting frame (2) and fix the lifting frame (2) to the support frame (1); Establish the measurement rectangular coordinate system using the sub-reference plane (212) of the lifting frame (2) and verify whether the verticality of the measurement rectangular coordinate system meets the requirements; If the verticality meets the requirements, calculate and record the engine position data based on the engine theoretical coordinate system through the measurement rectangular coordinate system; Insert the measuring pin (213) into the interface of the intake pipe. If it can be inserted, the position of the intake pipe is qualified; otherwise, the position of the intake pipe is unqualified.

7. The usage method according to claim 6, wherein, Calculating and recording the engine position data based on the engine theoretical coordinate system through the measurement rectangular coordinate system includes: After fixing the lifting frame (2) with the engine to the support frame (1), obtain the first coordinate values of the positioning pin (206), the first pin shaft (210), and the second pin shaft (211) based on the engine theoretical coordinate system; Obtain the second coordinate values of the positioning pin (206), the first pin shaft (210), and the second pin shaft (211) based on the measurement rectangular coordinate system; Calculate the difference between the first coordinate value and the second coordinate value, and use the difference as the reference adjustment data; Scan the measurement objects of the engine to obtain the actual measurement data of the engine based on the measurement rectangular coordinate system. Among them, the measurement objects of the engine include the intake and exhaust edges and the pipe joints of the engine; Calculate the engine position data based on the engine theoretical coordinate system using the reference adjustment data and the actual measurement data of the engine.

8. The usage method according to claim 7, characterized in that, Verifying whether the verticality of the measurement rectangular coordinate system meets the requirements includes: If the verticality of the measurement rectangular coordinate system is less than or equal to 0.04°, the verticality meets the requirements.

9. The usage method according to claim 6, characterized in that After moving the support frame (1) to the designated area, fix the support frame (1) to the ground and adjust the column (102) so that the upper end surfaces of the columns (102) are on the same horizontal line, including: Move the support frame (1) to the use area through the universal wheels (103) and the directional wheels (104), and use the adjusting support (105) to separate the universal wheels (103) and the directional wheels (104) from the ground; Level the support frame (1) and place a bubble level on the top of the upper end surface of the column (102) of the support frame (1); Detect whether the upper end surfaces of all columns (102) of the support frame (1) are on the same horizontal line through the bubble level, and turn the adjusting support (105) until the upper end surfaces of all columns (102) are on the same horizontal line.

10. The usage method according to claim 6, characterized in that Lift the engine onto the lifting frame (2) and fix the lifting frame (2) to the support frame (1), including: Place the overhead crane sling on the backing plate (207). Connect the pin of the overhead crane sling to the lifting lug (202). Insert the anti-rotation pin (203) into the positioning ring of the overhead crane sling. Lift the lifting frame (2) and move it above the engine. Lower the lifting frame (2), and fix the engine to the lifting frame (2) through the first pin (210), the second pin (211) and the positioning pin (206); Move the lifting frame (2) with the engine fixed above the support frame (1). After slowly lowering the engine, place the engine and the lifting frame (2) on the support frame (1) through the pin (209) with hole-shaft fit with the column (102).

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