Modularized iron bird platform undercarriage installation method

Abstract

The invention discloses a modular iron bird platform undercarriage mounting method. The method comprises the following steps: (1) dividing a mounting point into a plurality of undercarriage mounting modules according to positions; (2) processing a foundation frame and each undercarriage mounting module; (3) fixing each undercarriage mounting module on the foundation frame after the foundation frame is fixed; and (4) connecting each mechanical interface of the undercarriage with each undercarriage mounting module. According to the method, the situation that part of installation points cannot be measured is avoided through modular design.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft ground test piece installation, and in particular relates to a modular iron bird stand landing gear installation method. Background Art

[0002] When building an aircraft ground simulator (i.e., an iron bird stand) for certain aircraft models, it is necessary to test the entire hydraulic system. In order to provide a realistic scenario, the test pieces connected to the hydraulic system's actuators need to be installed with real parts. The landing gear is one of them, so accurate and convenient installation becomes a top priority.

[0003] At present, the installation of large aircraft parts mainly relies on trusses, which requires the design of special tooling to ensure proper installation. At the same time, it requires a large on-site working space and the addition of lifting equipment to assist.

[0004] Many large equipment are installed using laser positioning. The advantage of laser positioning is that it can accurately locate the coordinates of the installed components.

[0005] Many large-scale strength test tooling structures now adopt a modular design, which is convenient for reassembly, disassembly, and replacement, saving design costs and improving component utilization.

[0006] The existing technology has the following deficiencies:

[0007] For the test laboratory, the installation of the test piece is a one-time activity, and the design of special tooling wastes financial, material and human resources. Secondly, the installation space in the test laboratory is limited, so it is impossible to use a truss to install the landing gear.

[0008] Laser positioning technology can accurately locate the installation parts, but each installation point needs to be adjusted on site, and frequent disassembly increases the intensity and time of work. At the same time, laser positioning measures the target position through the emission and reception of laser beams, and it is necessary to consider the installation order of the measurement points. Summary of the invention

[0009] Purpose of the Invention

[0010] In view of the installation problem of the existing iron bird platform, the present invention provides a modular iron bird platform landing gear installation method.

[0011] Inventing technical solutions

[0012] A modular iron bird landing gear installation method, the method comprising the following steps:

[0013] (1) Divide the installation points into several landing gear installation modules according to their locations;

[0014] (2) Processing the basic frame and landing gear installation modules;

[0015] (3) After the base frame is fixed, each landing gear mounting module is fixed on the base frame;

[0016] (4) Connect each mechanical interface of the landing gear to each landing gear mounting module respectively.

[0017] Preferably, in step (3), each landing gear mounting module is fixed to the base frame by laser positioning.

[0018] Preferably, the basic frame includes a left basic frame, a right basic frame, an upper connecting beam, a rear connecting beam, and a lower connecting beam. The left basic frame and the right basic frame are relatively vertically arranged, the horizontally arranged upper connecting beam is connected to the top surfaces of the left basic frame and the right basic frame, the rear connecting beam and the lower connecting beam are connected to the rear of the left basic frame and the right basic frame, and the rear connecting beam is located above the lower connecting beam.

[0019] Preferably, the landing gear mounting module includes a left support module, a right support module, an upper support module, and a rear support module.

[0020] Preferably, the left support module includes a left positioning plate and a left connecting beam, the left positioning plate is connected to and positioned on the left side wall plate of the landing gear and the left mechanical interface, and the left connecting beam connects the left positioning plate and the left basic frame.

[0021] Preferably, the right support module includes a right positioning plate and a right connecting beam, the right positioning plate is connected to the right side wall plate of the landing gear and the right mechanical interface, and the right connecting beam is connected to the right positioning plate and the right basic frame.

[0022] Preferably, the upper support module includes an upper positioning support and an upper connecting beam. The upper positioning support and the upper connecting beam are connected by bolts. The upper positioning support is connected to the landing gear, and the two ends of the upper connecting beam are respectively connected to the left basic frame and the right basic frame.

[0023] Preferably, the rear support module includes a rear positioning support and a rear connecting beam. The rear positioning support is connected to the rear connecting beam and the landing gear by bolts, and the two ends of the rear connecting beam are respectively connected to the left basic frame and the right basic frame.

[0024] Preferably, the right positioning plate and the right connecting beam are connected by bolts, and a copper pad is provided at the connection.

[0025] Preferably, when processing each landing gear mounting module, a point is selected as a reference point, and each mounting point is processed with reference to the reference point.

[0026] Advantages of the present invention:

[0027] a) Based on the actual situation on site (small space and no large lifting equipment), a modular design concept was proposed, and laser positioning and processing accuracy were used to ensure installation accuracy.

[0028] b) The installation parts are small in mass and size, and can be easily moved, adjusted and replaced in accordance with the laser positioning requirements.

[0029] c) Greatly reduce material usage, shorten measurement time, and save installation space.

[0030] d) Many installation locations on site are in blind spots of light and cannot be measured. Modular design avoids the situation where some installation points cannot be measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 It is a basic framework schematic diagram of the present invention.

[0033] Figure 3 It is a schematic diagram of the left bracket module of the present invention.

[0034] Figure 4 It is a schematic diagram of the right bracket module of the present invention.

[0035] Figure 5 It is a schematic diagram of the upper support module of the present invention.

[0036] Figure 6 Schematic diagram of the rear support module of the present invention.

[0037] In the figure: basic frame-1, landing gear installation module-2, left basic frame-11, right basic frame-12, upper connecting beam-13, rear connecting beam-14, lower connecting beam-15, left positioning plate-21, left connecting beam-22, right positioning plate-23, right connecting beam-24, upper positioning bracket-25, upper connecting beam-26, rear positioning bracket-27, rear connecting beam-28. DETAILED DESCRIPTION

[0038] The present invention is achieved through the following technical solutions.

[0039] like Figure 1 As shown in the figure, a modular iron bird landing gear installation method is firstly to modularize the installation points, divide the interface according to the position, and use laser positioning installation for module positioning. The relative error between the supports inside the module is ensured by machining accuracy. The use of machining and laser positioning methods not only ensures the strength of the structure, but also reduces the workload of on-site positioning and adjustment, while achieving positioning accuracy.

[0040] According to the analysis of the installation points corresponding to the installation split surface of the landing gear components, the installation points are divided into the upper part, the rear part, the left part, and the right part. Each part contains several installation points. By modularizing the installation points, the weight of the steel structure is reduced, and the requirements for the test infrastructure of the lifting equipment are avoided. An easy-to-measure point is selected as the measurement reference point, and other installation points are processed based on the reference point to ensure the installation accuracy requirements of the test piece. During the installation process, the position between each part and the basic installation frame is adjusted to ensure that the reference point meets the requirements of the point measured by the laser locator. Modular rapid positioning is achieved.

[0041] Specifically, the method first fixes the basic frame 1 on the floor of the laboratory, connects the various mechanical interfaces of the landing gear with the landing gear installation module 2, and ensures the internal relative position of the landing gear installation module 2 through laser positioning, thereby ensuring the installation size of the landing gear and completing the installation and positioning of the landing gear.

[0042] The basic frame 1 comprises a left basic frame 11, a right basic frame 12, an upper connecting beam 13, a rear connecting beam 14, and a lower connecting beam 15. The upper connecting beam 13 arranged horizontally is connected to the top surface of the left basic frame 11 and the right basic frame 12, the rear connecting beam 14 and the lower connecting beam 15 are connected to the rear of the left basic frame 11 and the right basic frame 12, and the rear connecting beam 14 is located above the lower connecting beam 15. The height of the left basic frame 11 and the right basic frame 11 is determined according to the height size of the landing gear to ensure that the landing gear will not interfere with the ground, the test bench, the test piece, etc. after installation. The width of the upper connecting beam 13, the rear connecting beam 14, and the lower connecting beam 15 is determined according to the width size of the landing gear to ensure the adjustment margin with the landing gear installation module 2 when the landing gear is installed. On various iron bird platforms, various modular basic frames 1 are designed according to the sizes of various landing gears, which can simply and quickly complete the initial positioning of the landing gear installation.

[0043] The landing gear installation module 2 comprises a left support module, a right support module, an upper support module and a rear support module.

[0044] The left support module includes a left positioning plate 21 and a left connecting beam 22. The left positioning plate 21 is used to position the left side wall plate and the left mechanical interface of the landing gear, and to strengthen the connection strength of the left side of the landing gear. The left connecting beam 22 can be flexibly selected in specific quantity, and is used to connect the left positioning plate 21 and the left basic frame 11. The left positioning plate 21 and the left connecting beam 22 are connected by bolts, and there is a 1mm copper pad at the connection. By adjusting the position of the bolts and the copper pad, the installation size of the left positioning plate 21 can be adjusted during laser positioning.

[0045] The right support module includes a right positioning plate 23 and a right connecting beam 24. The right positioning plate 23 is used to position the right side wall plate and the right mechanical interface of the landing gear, and to strengthen the connection strength of the right side of the landing gear. The right connecting beam 24 can be flexibly selected in specific quantity, and is used to connect the right positioning plate 23 and the right basic frame 12. The right positioning plate 23 and the right connecting beam 24 are connected by bolts, and there is a 1mm copper pad at the connection. By adjusting the position of the bolts and the copper pad, the installation size of the right positioning plate 23 can be adjusted during laser positioning.

[0046] The upper support module includes an upper positioning support 25 and an upper connecting beam 26. The upper positioning support 25 and the upper connecting beam 26 are connected by bolts, which not only ensure the connection strength, but also can be used to roughly adjust the installation size, and can be used to fine-tune the installation size by the internal connecting bolts of the upper positioning support 25.

[0047] The rear support module includes a rear positioning support 27 and a rear connecting beam 28. The rear positioning support 27 and the rear connecting beam 28 are connected by bolts. In addition to ensuring the connection strength, the bolts can also be used to roughly adjust the installation size, and the internal connecting bolts of the rear positioning support 27 can be used to fine-tune the installation size.

[0048] The protection scope of the present invention is not limited to the above-mentioned embodiments. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the scope of the present invention. If these changes and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these changes and modifications.

Claims

1. A modular iron bird landing gear installation method, characterized in that: The method comprises the following steps: (1) Divide the installation points into several landing gear installation modules according to their locations; (2) Processing the basic frame and landing gear installation modules; (3) After the base frame (1) is fixed, each landing gear mounting module is fixed on the base frame (1); (4) Connect each mechanical interface of the landing gear to each landing gear mounting module respectively.

2. A modular iron bird landing gear installation method as claimed in claim 1, characterized in that: In step (3), when each landing gear mounting module is fixed on the base frame, it is positioned by laser.

3. A modular iron bird platform landing gear installation method as claimed in claim 1, characterized in that: The basic frame (1) comprises a left basic frame (11), a right basic frame (12), an upper connecting crossbeam (13), a rear connecting crossbeam (14), and a lower connecting crossbeam (15); the left basic frame (11) and the right basic frame (12) are relatively vertically arranged; the horizontally arranged upper connecting crossbeam (13) is connected to the top surfaces of the left basic frame (11) and the right basic frame (12); the rear connecting crossbeam (14) and the lower connecting crossbeam (15) are connected to the rear of the left basic frame (11) and the right basic frame (12); and the rear connecting crossbeam (14) is located above the lower connecting crossbeam (15).

4. A modular iron bird platform landing gear installation method as claimed in claim 3, characterized in that: The landing gear installation module includes a left support module, a right support module, an upper support module, and a rear support module.

5. A modularized iron bird landing gear installation method as claimed in claim 4, characterized in that: The left support module comprises a left positioning plate (21) and a left connecting beam (22). The left positioning plate (21) is connected to the left side wall plate and the left mechanical interface of the landing gear, and the left connecting beam (22) is connected to the left positioning plate (21) and the left basic frame (11).

6. A modularized iron bird landing gear installation method as claimed in claim 4, characterized in that: The right support module comprises a right positioning plate (23) and a right connecting beam (24). The right positioning plate (23) is connected to the right side wall plate of the landing gear and the right side mechanical interface. The right connecting beam (24) is connected to the right positioning plate (23) and the right side basic frame (12).

7. A modularized iron bird landing gear installation method as claimed in claim 4, characterized in that: The upper support module comprises an upper positioning support (25) and an upper connecting beam (26). The upper positioning support (25) is connected to the upper connecting beam (26). The upper positioning support (25) is connected to the landing gear. The two ends of the upper connecting beam (26) are respectively connected to the left basic frame (11) and the right basic frame (12).

8. A modularized iron bird landing gear installation method as claimed in claim 4, characterized in that: The rear support module comprises a rear positioning support (27) and a rear connecting beam (28). The rear positioning support (27) is connected to the rear connecting beam (28) and the landing gear. The two ends of the rear connecting beam (28) are respectively connected to the left basic frame (11) and the right basic frame (12).

9. A modularized iron bird landing gear installation method as claimed in claim 6, characterized in that: The right positioning plate (23) and the right connecting beam (24) are connected by bolts, and a copper pad is arranged at the connection point.

10. A modularized iron bird landing gear installation method as claimed in claim 1, characterized in that: When processing each landing gear mounting module, a point is selected as a reference point, and each mounting point is processed with reference to the reference point.

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