A kind of aircraft nose landing gear torsion arm dismounts practical operation rack
By designing a practical training platform for disassembling and assembling the nose landing gear torque arm, the disassembly and assembly process of the nose landing gear torque arm of the aircraft was simulated, solving the corrosion problem of the torque hip pin of the nose landing gear of the A320 series aircraft. This enabled the training of maintenance personnel and solved the problem of existing disassembly and assembly training being unable to simulate the real environment for disassembly and assembly inspection tasks. It is applicable to the two torque arm structures of the A320 series aircraft and has significant effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU AIRCRAFT MAINTENANCE ENG
- Filing Date
- 2025-06-18
- Publication Date
- 2026-07-10
AI Technical Summary
In the existing technology, the torque arm pin of the nose landing gear of the A320 series aircraft is prone to corrosion, which can lead to the breakage of the torque link, affecting the nose wheel turning function. In addition, the nose landing gear is relatively large and not convenient for direct use in teaching and training.
Design a practical test bench for disassembling and assembling the torque arm of an aircraft nose landing gear, including a fixed bracket, an operating panel, a torque arm practical model, and a torque arm pin assembly, to simulate the disassembly and assembly process of the aircraft nose landing gear torque arm, including operations such as component installation, clearance measurement, torque application, safety installation, and lubrication.
It enables targeted training for maintenance personnel, enabling them to master aircraft maintenance skills and perform disassembly and inspection tasks in a simulated real environment. It is applicable to two torque arm structures of the A320 series aircraft and has significant effects.
Smart Images
Figure CN224480762U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of training devices for disassembling and assembling the torque arm of an aircraft nose landing gear, specifically to a practical training platform for disassembling and assembling the torque arm of an aircraft nose landing gear. Background Technology
[0002] The nose landing gear torsion arm pins of the A320 series aircraft are prone to corrosion due to coating issues, which can lead to the breakage of the nose landing gear torsion link, resulting in loss of nose wheel steering function or even more serious consequences. Related nose landing gear torsion arm inspection tasks require the complete disassembly of the entire torsion arm pin assembly, including the pins, for inspection, cleaning, lubrication, and corrosion protection, before reinstallation. The installation process involves a series of operations such as clearance measurement, torque application, safety device installation, and lubrication. This task is of paramount importance, involves numerous and complex steps, and requires maintenance personnel to possess comprehensive professional skills and integrated application abilities.
[0003] Therefore, maintenance personnel involved in the maintenance of the nose landing gear torque arm need training on the entire disassembly and assembly process. However, the nose landing gear is relatively large and not easily used for direct teaching and training. To address this, this invention develops a training platform for hands-on training in nose landing gear torque arm operations. This platform effectively provides targeted training for maintenance personnel, enabling them to master several fundamental aircraft maintenance skills, including visual inspection, component installation, clearance measurement, torque application, safety installation, lubrication, and corrosion inhibitor application. Utility Model Content
[0004] The purpose of this utility model is to provide a practical training platform for the disassembly and assembly of the torque arm of an aircraft nose landing gear, on which practical training can be conducted on the entire disassembly and assembly process of the torque arm pin assembly of the aircraft nose landing gear torque arm.
[0005] The objective of this utility model is achieved through the following technical solution:
[0006] A practical test bench for assembling and disassembling the torque arm of an aircraft nose landing gear is characterized by comprising a fixed bracket, an operating panel, a torque arm practical model, and a torque arm pin assembly on the aircraft nose landing gear torque arm. Two operating panels are fixedly mounted on the top of the fixed bracket, and a fixed tray is provided below the operating panels. Torque arm practical models are respectively provided on the front of the operating panels. The connection between the torque arm practical model and the operating panel is detachable. The front end of the torque arm practical model is provided with left and right torque arms, and a torque arm pin assembly is connected to the left and right torque arms of each torque arm practical model.
[0007] A further technical solution of this utility model is as follows: the torque arm operation model is provided with a fixed seat, the bottom of the fixed seat is provided with a bottom mounting plate connected to the operation board, and the left and right torque arms are located at the front end of the fixed seat.
[0008] A further technical solution of this utility model is that the torque arm operation model and the operation board are connected by a screw.
[0009] A further technical solution of this utility model is: each operating panel is provided with two torque arm operation models, one on the left and one on the right.
[0010] A further technical solution of this utility model is: each operation board is equipped with a tablet computer.
[0011] A further technical solution of this utility model is: a transport wheel is provided at the bottom of the fixed bracket.
[0012] A further technical solution of this utility model is: a horizontally protruding support rod is provided on the fixed bracket, and the operating plate is fixedly connected to the outer end of the support rod.
[0013] A further technical solution of this utility model is: the fixed bracket includes a left bracket, a right bracket and a crossbar, and the left bracket and the right bracket are fixedly connected by the crossbar.
[0014] Compared with the prior art, the present invention has the following beneficial effects:
[0015] This invention features a torque arm operational model mounted on the control panel of a fixed support. Torque arm pin assemblies are connected to the left and right torque arms of the operational model, realistically simulating the structure of the torque arm on an aircraft's nose landing gear. The torque arm pin assemblies can be directly disassembled and assembled on the operational platform of this invention. The disassembly and assembly process of the torque arm pin assemblies can include a series of operations such as component installation, clearance measurement, torque application, safety installation, and lubrication. It can comprehensively realize the disassembly and assembly inspection tasks on the aircraft. It can also develop supporting training courses, practical projects, and assessment projects to achieve excellent training results.
[0016] The connection between the torque arm practical model and the control panel in this embodiment is detachable, which makes it easy to replace the torque arm practical model with different structures. It can include the two existing structures of the A320 series aircraft nose landing gear torque arm. Different construction steps are required for different configurations, making the training more comprehensive and effective. Attached Figure Description
[0017] Figure 1 This is a three-dimensional schematic diagram of the aircraft nose landing gear torsion arm disassembly and assembly practical operation platform according to an embodiment of this utility model;
[0018] Figure 2 This is a side view of the aircraft nose landing gear torsion arm disassembly and assembly practical operation stand according to an embodiment of this utility model.
[0019] Figure 3This is a top view of the aircraft nose landing gear torsion arm disassembly and assembly practical operation platform according to an embodiment of this utility model.
[0020] Figure 4 This is a three-dimensional schematic diagram of a practical model of a torque arm according to an embodiment of this utility model;
[0021] Figure 5 This is a side view of the practical model of the torque arm according to an embodiment of the present invention;
[0022] Figure 6 This is a partially exploded view of the practical model of the torque arm according to an embodiment of this utility model;
[0023] Figure 7 This is a three-dimensional schematic diagram of a practical model of a torque arm with another torque arm pin assembly installed according to an embodiment of the present invention.
[0024] Figure 8 This is a partially exploded view of a practical model of a torque arm equipped with another torque arm pin assembly, according to an embodiment of this utility model.
[0025] Meaning of the labels in the attached diagram:
[0026] 1-Fixed bracket; 1.1-Left bracket; 1.2-Crossbar; 1.3-Support rod; 1.4-Right bracket; 2-Torque arm practical model; 2.1-Bottom mounting plate; 2.2-Fixed seat; 2.3-Left torque arm; 2.4-Right torque arm; 3-Torque arm pin assembly; 3.1-First torque arm pin; 3.2-Oil nozzle; 3.3-Washer; 3.4-Spline washer; 3.5-First nut; 3.6-Locking plate; 3.7-Locking plate fixing screw; 3.8-Second torque arm pin; 3.9-Square hole washer; 3.10-Concave washer; 3.11-Second nut; 3.12-Nut locking screw; 3.13-Locking nut; 4-Fixed tray; 5-Operating panel; 6-Tablet computer; 7-Transport wheel. Detailed Implementation
[0027] The present invention will be further described below with reference to embodiments.
[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0029] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0031] Example:
[0032] like Figures 1 to 3 The image shows a practical exercise stand for disassembling and assembling the torque arm of an aircraft nose landing gear according to this embodiment. It includes a fixed bracket 1, two operating panels 5, four torque arm operation models 2, and four sets of torque arm pin assemblies 3 on the torque arms of the aircraft nose landing gear.
[0033] The fixed bracket 1 in this embodiment includes a left bracket 1.1, a right bracket 1.4, and a crossbar 1.2. The left bracket 1.1 and the right bracket 1.4 are fixedly connected as one unit by the crossbar 1.2. The fixed bracket 1 is provided with a horizontally protruding support rod 1.3. Two operating plates 5 are respectively provided on the front and rear sides of the fixed bracket 1. The operating plates 5 are in a vertical state. The back of the operating plates 5 is fixedly connected to the outer end of the support rod 1.3, which can be by screw connection, welding, etc.
[0034] A horizontal fixed tray 4 is fixedly mounted on the fixed bracket 1. The fixed tray 4 is located below the operating panel 5. Various tools needed for training can be placed on the fixed tray 4.
[0035] The bottom of the fixed bracket 1 is equipped with four transport wheels 7 with brakes, which make it easy to move the practical platform.
[0036] On the left and right sides of the front of the control panel 5, there are torque arm operation models 2, such as... Figure 4 As shown, the torque arm practical model 2 is provided with a fixed base 2.2. The bottom of the fixed base 2.2 is provided with a bottom mounting plate 2.1. The bottom mounting plate 2.1 is connected to the operating plate 5 by a conventional screw 7. The torque arm practical model 2 can be removed from the operating plate 5 by removing the screw 7.
[0037] Left and right torque arms 2.3 and 2.4 are provided at the front end of the fixed base 2.2. The size and shape of the left and right torque arms 2.3 and 2.4 are consistent with the actual aircraft nose landing gear torque arms. Torque arm pin assemblies 3 are connected to the left and right torque arms of each torque arm practical model 2.
[0038] Torque arm pin assembly 3 is a real component from the nose landing gear torque arm of the A320 aircraft. Different structures of torque arm pin assemblies 3 can be connected to the torque arm practical model 2. Figures 1 to 6 The image above shows the torque arm pin assembly 3 of the first structure. Figure 7 and Figure 8 The image above shows the second type of torque arm pin assembly 3. The specific structures of the two different torque arm pin assemblies 3 are as follows:
[0039] The first type of torsion arm pin assembly 3: as shown in... Figures 4 to 6 As shown, it includes a first torque arm pin 3.1, an oil filler nozzle 3.2, two washers 3.3, a spline washer 3.4, a first nut 3.5, a locking plate 3.6, and a locking plate fixing screw 3.7. The first torque arm pin 3.1 passes through the connecting holes of the left and right torque arms 2.3, 2, and 4. One washer 3.3 is located between the head of the first torque arm pin 3.1 and the torque arm, and the other washer 3.3 is located between the left and right torque arms 2.3, 2, and 4. The spline washer 3.4, the first nut 3.5, the locking plate 3.6, and the locking plate fixing screw 3.7 are connected to the tail of the first torque arm pin 3.1 in the existing connection method. The oil filler nozzle 3.2 is located at the head of the first torque arm pin 3.1. A fuse will be connected between the locking plate 3.6 and the locking plate fixing screw 3.7 in the existing method in the future.
[0040] The second type of torsion arm pin assembly 3: as shown in... Figure 7 and Figure 8 As shown, it includes a second torque arm pin 3.8, an oil nozzle 3.2, two washers 3.3, a square hole washer 3.9, a concave washer 3.10, a second nut 3.11, a nut locking screw 3.12, and a locking nut 3.13. The second torque arm pin 3.8 passes through the connecting holes of the left and right torque arms 2.3, 2, and 4. One washer 3.3 is located between the head of the second torque arm pin 3.8 and the torque arm, and the other washer 3.3 is located between the left and right torque arms 2.3, 2, and 4. The square hole washer 3.9, the concave washer 3.10, and the second nut 3.11 are connected to the tail of the second torque arm pin 3.8 in the existing connection method. The nut locking screw 3.12 passes through the second nut 3.11, and the locking nut 3.13 is connected to the tail of the nut locking screw 3.12. A cotter pin will be connected to the locking nut 3.13 later.
[0041] In this embodiment, each control panel 5 is equipped with a tablet computer 6, which is located between the left and right torque arm operation models 2. The tablet computer 6 can be used to display a real and complete photo of the aircraft's nose landing gear, the aircraft's operating interface, etc., and can be used to simulate limited-motion operations, thereby facilitating the operator to use the real aircraft system as a reference.
[0042] During practical training, operators can first be guided to disassemble the torque arm pin assembly 3 of the A320 series aircraft's nose landing gear torque arm on a training bench, and clean off the old grease and lubricant. After disassembly, operators can be guided to perform inspection, cleaning, lubrication, and corrosion prevention operations. Then, operators can be guided to reassemble the torque arm pin assembly 3. During reassembly, the following practical operations can be performed: applying the specified tightening torque, measuring and adjusting the clearance between the shim 3.3 and the left and right torque arms 2.3 and 2.4, installing safety structures such as cotter pins and fuses, injecting grease through the grease nipple 3.2 for lubrication, and applying lubricant to the threads, etc.
[0043] The practical test bench in this embodiment uses components, fasteners, greases, and lubricants of the same specifications as those used in real aircraft, simulating the complex maintenance environment of a real aircraft to the greatest extent possible. The entire construction process, from preparation to completion, is carried out to simulate real aircraft maintenance tasks.
[0044] The practical training bench of this embodiment enables operators to receive training, practice, and assessment on relevant operations. It can replicate the landing gear environment, as well as the structure of torque arm pins, shims, etc., one-to-one. It can include two torque arm structures of existing aircraft. The practical training bench of this embodiment is highly comprehensive and can fully realize the training of various basic maintenance tasks on the aircraft.
[0045] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of this utility model, shall fall within the scope of protection of this utility model.
Claims
1. A practical test bench for disassembling and assembling the torque arm of an aircraft nose landing gear, characterized in that: The device includes a fixed bracket, an operating panel, a torque arm manipulator model, and a torque arm pin assembly on the aircraft nose landing gear torque arm. The fixed bracket has two operating panels fixedly mounted on top, and a fixed tray is provided below the operating panels. The torque arm manipulator model is provided on the front of each operating panel. The connection between the torque arm manipulator model and the operating panel is detachable. The front end of each torque arm manipulator model has left and right torque arms, and the torque arm pin assembly is connected to the left and right torque arms of each torque arm manipulator model.
2. The aircraft nose landing gear torque arm disassembly hands-on bench of claim 1, wherein: The torque arm practical model is equipped with a fixed base, and the bottom of the fixed base is equipped with a bottom mounting plate that is connected to the operation panel. The left and right torque arms are located at the front end of the fixed base.
3. The aircraft nose landing gear torque arm disassembly hands-on bench of claim 1, wherein: The torque arm operating model is connected to the control panel via a screw.
4. The aircraft nose landing gear torque arm disassembly hands-on bench of claim 1, wherein: Each of the aforementioned control panels is equipped with two practical models of the torque arm, one on the left and one on the right.
5. The aircraft nose landing gear torque arm disassembly hands-on test stand of claim 1, wherein: Each of the aforementioned control panels is equipped with a tablet computer.
6. The aircraft nose landing gear torque arm disassembly hands-on test stand of claim 1, wherein: The bottom of the fixed bracket is equipped with transport wheels.
7. The aircraft nose landing gear torque arm disassembly hands-on test stand of claim 1, wherein: The fixed bracket is provided with a horizontally protruding support rod, and the operating plate is fixedly connected to the outer end of the support rod.
8. The aircraft nose landing gear torque arm disassembly hands-on bench of claim 1, wherein: The fixed support includes a left support, a right support, and a crossbar, and the left support and the right support are fixedly connected by the crossbar.