Installation process method of straight rod type oil receiving probe rod support

Abstract

The invention provides a novel straight rod type oil receiving probe rod mounting process method. The finished oil receiving probe rod product is fixed to an oil receiving probe rod ground supporting clamp; measuring the deformation of the measuring point at the front end of the finished oil receiving probe rod to obtain the deviation b between the measuring point at the front end of the finished oil receiving probe rod and the corresponding theoretical position along the vertical direction; the theoretical position represents the position of a measuring point at the front end of the finished oil receiving probe rod without deflection deformation; the finished oil receiving probe rod base is installed at a set position on the surface of an airplane; the finished oil receiving probe rod support is installed on the oil receiving probe rod technological piece through bolts; mounting the oil receiving probe rod process piece and the oil receiving probe rod support finished product on the oil receiving probe rod base finished product; the oil receiving probe rod process piece is shorter than the oil receiving probe rod finished product; measuring a gap between the finished oil receiving probe rod support and the finished oil receiving probe rod base by using a soft material; reversely constructing a structural pad mathematical model to obtain a structural pad; manufacturing a bolt hole in the structural pad according to a bolt hole in the oil receiving probe rod support simulation piece; the oil receiving probe rod support simulation piece is completely consistent with the oil receiving probe rod support finished product; compensating the thickness of the structural pad according to the deviation b; a structural pad is installed between the finished oil receiving probe rod support and the finished oil receiving probe rod base; and the oil receiving probe rod process part is disassembled, and an oil receiving probe rod finished product is installed.

Description

Technical Field

[0001] The invention belongs to the technical field of aviation technical structure assembly, and relates to an installation process method of a straight rod type oil receiving probe rod support. Background Art

[0002] The refueling probe is usually installed at the front of the aircraft. It is a device that connects the aircraft fuel system refueling pipeline and implements aerial refueling. The axis of the refueling probe is parallel to the aircraft symmetry plane and is at a certain angle to the aircraft horizontal reference plane. The front end of the refueling probe has a high precision installation position requirement in the aircraft coordinate system.

[0003] The traditional installation of the oil probe uses the oil probe installation model for positioning, and the oil probe is fixed to the front end of the aircraft with the oil probe support. Since the oil probe is a long cantilever structure installed at the front end of the aircraft, the front end of the oil probe will tilt downward due to its own weight. At the same time, the aircraft shape is a thin-walled skin structure, and there are tolerances in the shape of each aircraft. The installation of the oil probe is affected by the manufacturing tolerance of the finished product and the assembly method, and it is easy to have installation accuracy problems. Therefore, it is necessary to adopt an installation process method to meet the design and installation accuracy requirements. Summary of the invention

[0004] Technical problem solved by the invention: The invention overcomes the deficiencies in the prior art and provides a new installation process method for a straight-rod oil receiving probe rod.

[0005] The technical solution of the present invention:

[0006] A method for installing a straight-rod oil-receiving probe support, the method comprising:

[0007] Step 1: Fix the finished oil receiving probe rod on the ground support fixture of the oil receiving probe rod;

[0008] Step 2: Measure the deformation of the measuring point at the front end of the finished oil-receiving probe rod to obtain the deviation b between the measuring point at the front end of the finished oil-receiving probe rod and the corresponding theoretical position in the vertical direction; the theoretical position indicates the position of the measuring point at the front end of the finished oil-receiving probe rod when there is no deflection deformation;

[0009] Step 3, installing the finished product of the oil receiving probe base at a set position on the aircraft surface;

[0010] Step 4: Install the finished oil receiving probe rod support onto the oil receiving probe rod process part by means of bolts;

[0011] Step 5, installing the oil receiving probe rod process parts and the oil receiving probe rod support finished product on the oil receiving probe rod base finished product; the oil receiving probe rod process parts are shorter than the oil receiving probe rod finished product;

[0012] Step 6: Use soft material to measure the gap between the finished product of the oil receiving probe rod support and the finished product of the oil receiving probe rod base;

[0013] Step 7, reversely construct the digital model of the structural pad to obtain the structural pad;

[0014] Step 8, making bolt holes on the structural pad according to the bolt holes on the oil receiving probe rod support simulation piece; the oil receiving probe rod support simulation piece is completely consistent with the oil receiving probe rod support finished product;

[0015] Step nine, compensating the thickness of the structural pad according to the deviation b in step two;

[0016] Step 10, installing a structural pad between the finished product of the oil receiving probe rod support and the finished product of the oil receiving probe rod base;

[0017] Step 11, remove the oil receiving probe rod process parts and install the oil receiving probe rod finished product.

[0018] Furthermore, in step one, the ground support fixture of the oil-receiving probe rod includes an oil-receiving probe rod base simulation component and an oil-receiving probe rod support simulation component.

[0019] Furthermore, in step 2, a laser tracker is used to establish an aircraft coordinate system according to the optical tool ball point OTP on the ground support fixture of the oil receiving probe rod, and the actual measured value of the measurement point at the front end of the finished oil receiving probe rod is measured and recorded in the aircraft coordinate system, and the actual measured value is compared with the theoretical value to obtain the deviation b between the measurement point at the front end of the finished oil receiving probe rod and the theoretical position along the vertical direction.

[0020] Furthermore, in step six, the soft material is quick-drying putty or room temperature resin.

[0021] Furthermore, in step seven, reverse modeling uses a laser scanner to scan the shape of the soft material to obtain point cloud data, and uses Catia software to fit the point cloud data to obtain a digital model of the structural pad, and manufactures the structural pad according to the digital model of the structural pad.

[0022] Furthermore, in step nine, the thickness b of the structural pad is uniformly increased in the thickness direction to compensate for the deflection deformation of the front end of the finished oil receiving probe rod.

[0023] Furthermore, the structural pad is a special-shaped curved structure that is wide at both ends and narrow in the middle.

[0024] Furthermore, the structural pad is a special-shaped curved structure with one end being thicker and the other end being thinner.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] It solves the problem of size deviation of the front end point of the oil-receiving probe rod caused by its deflection and deformation, solves the problem of difficult scraping processing and long processing cycle, and reduces the risk of high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1This is a schematic diagram of the installation of the finished straight-rod oil-receiving probe on the ground support fixture of the oil-receiving probe;

[0028] Figure 2 This is the installation diagram of the straight rod oil probe support

[0029] Among them: 1-straight rod oil receiving probe, 2-front end measuring point, 3-oil receiving probe support, 4-oil receiving probe base, 5-structural pad. DETAILED DESCRIPTION

[0030] Combined with Figure 1 , Attachment Figure 2 , provides an installation process method for an aircraft straight rod type oil receiving probe rod support, and the present invention is further described in detail below with respect to a specific implementation method.

[0031] The oil receiving probe rod involved in the present invention is a long cantilever structure with a length of about 10m-15m and a weight of about 1 ton. The front end of the oil receiving probe rod will be deformed due to its own weight, and the traditional process method does not provide a solution to this deformation.

[0032] At the same time, the aircraft has a thin-walled skin structure, and there are certain manufacturing deviations in the aircraft shape, which will lead to a gap between the oil probe support and the oil probe base. The traditional process method uses scraping to eliminate the gap. The traditional scraping process method is difficult to process and has a long processing cycle.

[0033] At the same time, because the oil-receiving probe rod is heavy and its installation location is about 10m above the ground, there is a high safety risk in performing scraping work at high altitude.

[0034] In order to solve the above technical problems, the present invention makes the following improvements to the traditional process:

[0035] a) Simulate the front section of the aircraft and the support structure of the oiling probe rod, set up a ground support fixture for the oiling probe rod, fix the finished oiling probe rod on the simulated support part of the oiling probe rod on the ground support fixture for the oiling probe rod, use a laser tracker to measure the front end measurement point of the finished oiling probe rod in the aircraft coordinate system, record the deviation b between the front end point of the finished oiling probe rod and the theoretical position in the vertical direction, and eliminate the dimensional deviation of the front end point of the oiling probe rod caused by the deflection deformation of the oiling probe rod by increasing the thickness b in the thickness direction of the structural pad;

[0036] b) Use soft material to fill the gap between the oil receiving probe rod support and the oil receiving probe rod base. After the soft material is cured, use a laser scanner to measure the soft material shape and reverse model it. Then, use digital model CNC machining to manufacture the structural pad to eliminate the non-fitting gap between the oil receiving probe rod support and the oil receiving probe rod base caused by the deviation of the aircraft shape.

[0037] c) Make bolt holes on the structural pad on the ground according to the bolt holes on the oil probe rod support simulation part, change the high-altitude operation to low-altitude operation, and reduce the risk of high-altitude operation.

[0038] Step 1: Fix the finished oil receiving probe rod on the ground support fixture of the oil receiving probe rod;

[0039] Step 2: Measure the deformation of the measuring point at the front end of the finished oil-receiving probe rod to obtain the deviation b between the measuring point at the front end of the finished oil-receiving probe rod and the corresponding theoretical position in the vertical direction; the theoretical position indicates the position of the measuring point at the front end of the finished oil-receiving probe rod when there is no deflection deformation;

[0040] Step 3, installing the finished product of the oil receiving probe base at a set position on the aircraft surface;

[0041] Step 4: Install the finished oil receiving probe rod support onto the oil receiving probe rod process part by means of bolts;

[0042] Step 5, installing the oil receiving probe rod process parts and the oil receiving probe rod support finished product on the oil receiving probe rod base finished product; the oil receiving probe rod process parts are shorter than the oil receiving probe rod finished product;

[0043] Step 6: Use soft material to measure the gap between the finished product of the oil receiving probe rod support and the finished product of the oil receiving probe rod base;

[0044] Step 7, reversely constructing a digital model of the structural pad to obtain the structural pad;

[0045] Step 8, making bolt holes on the structural pad according to the bolt holes on the oil receiving probe rod support simulation piece; the oil receiving probe rod support simulation piece is completely consistent with the oil receiving probe rod support finished product;

[0046] Step nine, installing a structural pad between the finished product of the oil receiving probe rod support and the finished product of the oil receiving probe rod base;

[0047] Step 11, remove the oil receiving probe rod process parts and install the oil receiving probe rod finished product. Further, the oil receiving probe rod ground support fixture in step 1 includes an oil receiving probe rod base simulation part and an oil receiving probe rod support simulation part (such as Figure 1 shown);

[0048] Furthermore, in step 2, a laser tracker is used to establish an aircraft coordinate system according to the OTP (optical tool point) point on the ground support fixture of the oil receiving probe rod, and the actual value of the measuring point at the front end of the finished oil receiving probe rod is measured and recorded in the aircraft coordinate system, and the actual value is compared with the theoretical value to obtain the deviation b between the measuring point at the front end of the finished oil receiving probe rod and the theoretical position in the vertical direction;

[0049] Furthermore, the soft material in step 6 may be quick-drying putty or room temperature resin;

[0050] Furthermore, in step seven, the reverse modeling uses a laser scanner to scan the soft material shape to obtain point cloud data, and uses Catia software to fit the point cloud data to obtain a structural pad digital model, and manufactures the structural pad according to the structural pad digital model;

[0051] Furthermore, in step seven, the thickness b of the structural pad is increased in the thickness direction to compensate for the deflection deformation of the front end of the finished oil receiving probe rod.

[0052] The technical solution of the present invention solves the problem of dimensional deviation of the front end point of the oil receiving probe rod caused by the deflection deformation of the oil receiving probe rod, solves the problem of great difficulty and long processing cycle in scraping processing, and reduces the risk of high-altitude operations.

Claims

1. A method for installing a straight rod oil probe support, characterized in that: The method comprises: Step 1: Fix the finished oil receiving probe rod on the ground support fixture of the oil receiving probe rod; Step 2: measuring the deformation of the measuring point at the front end of the finished oil receiving probe rod to obtain the deviation b between the measuring point at the front end of the finished oil receiving probe rod and the corresponding theoretical position in the vertical direction; the theoretical position indicates the position of the measuring point at the front end of the finished oil receiving probe rod when there is no deflection deformation; Step 3, installing the finished product of the oil receiving probe base at a set position on the aircraft surface; Step 4: Install the finished oil receiving probe rod support onto the oil receiving probe rod process part by means of bolts; Step 5, installing the oil receiving probe rod process parts and the oil receiving probe rod support finished product on the oil receiving probe rod base finished product; the oil receiving probe rod process parts are shorter than the oil receiving probe rod finished product; Step 6: Use soft material to measure the gap between the finished product of the oil receiving probe rod support and the finished product of the oil receiving probe rod base; Step 7, reversely construct the digital model of the structural pad to obtain the structural pad; Step 8, making bolt holes on the structural pad according to the bolt holes on the oil receiving probe rod support simulation piece; the oil receiving probe rod support simulation piece is completely consistent with the oil receiving probe rod support finished product; Step nine, compensating the thickness of the structural pad according to the deviation b in step two; Step 10, installing a structural pad between the finished product of the oil receiving probe rod support and the finished product of the oil receiving probe rod base; Step 11, remove the oil receiving probe rod process parts and install the oil receiving probe rod finished product.

2. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: In step 1, the ground support fixture of the oil-receiving probe rod includes an oil-receiving probe rod base simulation component and an oil-receiving probe rod support simulation component.

3. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: In step 2, a laser tracker is used to establish an aircraft coordinate system based on the optical tool ball point OTP on the ground support fixture of the oil receiving probe rod. The actual measured value of the measurement point at the front end of the oil receiving probe rod is measured and recorded in the aircraft coordinate system, and the actual measured value is compared with the theoretical value to obtain the deviation b between the measurement point at the front end of the oil receiving probe rod and the theoretical position in the vertical direction.

4. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: In step six, the soft material is quick-drying putty or room temperature resin.

5. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: In step seven, reverse modeling uses a laser scanner to scan the shape of the soft material to obtain point cloud data, and uses Catia software to fit the point cloud data to obtain the digital model of the structural pad, and manufactures the structural pad according to the digital model of the structural pad.

6. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: In step nine, the thickness b of the structural pad is uniformly increased in the thickness direction to compensate for the deflection deformation of the front end of the finished oil-receiving probe rod.

7. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: The structural pad is a special-shaped curved surface structure with wide ends and narrow middle.

8. The installation process of a straight rod oil receiving probe support according to claim 1 is characterized in that: The structural pad is a special-shaped curved surface structure with one end being thick and the other end being thin.

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