Simulated nose landing gear turning device

Abstract

The utility model provides a simulation nose landing gear turning device. The simulation nose landing gear turning device comprises a steering column, a steering driving mechanism and a combined shell assembly. The steering driving mechanism achieves the function of driving the steering column to rotate through transmission of an air cylinder, a linear guide rail and a gear rack, the structure is simplified, and the machining precision requirement is lowered. The combined shell is composed of the left shell, the right shell and the end cover, and installation, maintenance and teaching are convenient. According to the invention, the manufacturing and maintenance cost can be obviously reduced, the hydraulic oil leakage problem is avoided, and the teaching and maintenance convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of flight system simulation technology, and more specifically, to a simulated nose landing gear turning device. Background Technology

[0002] In the field of aircraft design technology, the simulated nose landing gear steering mechanism is a crucial device for simulating the steering function of an aircraft's nose landing gear, widely used in aviation education, experimental research, and engineering verification. Existing simulated steering mechanisms typically employ hydraulic actuation, using cylinders and piston rods distributed at both ends to drive steering, and auxiliary components such as hydraulic pumps, hydraulic lines, and hydraulic valves for system control. However, this hydraulic drive method requires high precision machining of the cylinders and piston rods, resulting in complex manufacturing processes and high costs. Furthermore, the operational stability of the hydraulic system is easily affected by the cleanliness of the hydraulic fluid. Insufficient machining precision or inadequate fluid filtration can easily lead to problems such as cylinder actuation jamming and hydraulic oil leakage, further increasing maintenance difficulty and operating costs. In addition, existing simulated steering mechanisms often employ a closed-shell design to accommodate hydraulic braking. This closed structure not only imposes high technical requirements on installation and maintenance but also complicates subsequent troubleshooting. Especially in educational settings, the closed shell restricts students' direct observation of the internal structure and working principles, affecting teaching effectiveness and learning experience.

[0003] In view of this, the applicant hereby submits this application after studying the existing technology. Utility Model Content

[0004] This invention provides a simulated front landing gear turning device, which aims to improve at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a simulated front landing gear turning device, including a steering column and a steering drive mechanism, and also includes a combined housing assembly. A rotating gear is coaxially arranged on the steering column. The steering drive mechanism is disposed in the inner cavity of the combined housing assembly. The combined housing assembly includes a drive cylinder, a piston rod, and a gear. The drive cylinder is fixed inside the inner cavity. The gear is mounted and connected to the piston rod of the drive cylinder. The rack end of the gear meshes with the rotating gear. The drive cylinder drives the gear to move back and forth, thereby driving the steering column to rotate.

[0006] As a further optimization, the steering drive mechanism also includes a linear guide rail, a slider, and a connector. The linear guide rail is fixedly disposed in the inner cavity, the slider is slidably connected to the linear guide rail, and the slider is fixedly connected to the gear condition through the connector.

[0007] As a further optimization, a lug is installed at one end of the tooth condition near the piston rod, and the piston rod is connected to the lug via a spherical bearing.

[0008] As a further optimization, a bearing is provided between the combined housing and the steering column.

[0009] As a further optimization, the combined housing assembly includes a left housing, a right housing, and end caps, with an inner cavity formed between the left and right housings, and end caps provided at both ends of the inner cavity; the drive steering mechanism is fixed on the left housing.

[0010] As a further optimization, the end cap is provided with multiple bolts, and the left and right housings are connected by the bolts on the end cap.

[0011] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0012] This application provides a simulated nose landing gear turning device. By employing a drive cylinder, linear guide rail, and rack and pinion transmission, the entire device boasts a compact structure. Standard machining methods can meet the required precision, significantly reducing manufacturing complexity and cost while avoiding hydraulic leakage. Furthermore, the modular housing design replaces the traditional enclosed housing, facilitating on-site installation and debugging, as well as subsequent maintenance and troubleshooting. The detachable right housing design also promotes intuitive teaching, contributing to improved teaching quality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0014] Fig. 1 This is an exploded structural diagram of a simulated front landing gear turning device according to the present invention;

[0015] Fig. 2 This is a complete structural schematic diagram of a simulated front landing gear turning device according to this utility model;

[0016] The markings in the diagram are: 1. Steering column; 2. Steering drive mechanism; 3. Combined housing assembly; 4. Rotary gear; 5. Inner cavity; 6. Drive cylinder; 7. Piston rod; 8. Gear condition; 9. Linear guide; 10. Slider; 11. Connector; 12. Ear seat; 13. Spherical plain bearing; 14. Tapered roller bearing; 15. Left housing; 16. Right housing; 17. End cap; 18. Bolt; 19. Through hole. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Depend on Figs. 1-2 As shown, this utility model embodiment provides a simulated front landing gear turning device, including a steering column 1, a steering drive mechanism 2, and a combined housing assembly 3. The combined housing assembly 3 consists of a left housing 15, a right housing 16, and an end cap 17. An inner cavity 5 is formed between the left housing 15 and the right housing 16, and both ends of the inner cavity 5 are closed by the end cap 17. Multiple bolts 18 are provided on the end cap 17 to fix the left housing 15 and the right housing 16. The steering drive mechanism 2 is mounted on the left housing 15. The detachable design of the right housing 16 allows for easy opening during teaching or maintenance, exposing the steering drive mechanism 2 and the steering column 1 within the inner cavity 5. The left housing 15 has a through hole communicating with the inner cavity 5. The steering column 1 passes through the through hole 19 of the left housing 15, and a rotating gear 4 is coaxially mounted on the steering column 1. The tooth ends of the rotating gear 4 extend into the inner cavity 5 and mesh with a tooth condition 8. The forward and backward movement of the tooth condition 8 drives the rotating gear 4 to rotate, thereby realizing the steering function of the steering column 1.

[0019] Preferably, the core components of the steering drive mechanism 2 include a drive cylinder 6, a linear guide rail 9, a slider 10, a connecting piece 11, a gear condition 8, and a rack and pinion lug 12. The drive cylinder 6 is fixed inside the inner cavity 5, and its piston rod 7 is connected to the rack and pinion lug 12 via a spherical bearing 13. The rack and pinion lug 12 is installed at the end of the gear condition 8 near the piston rod 7, ensuring that the gear condition 8 can move flexibly under the push of the piston rod 7 and maintain the meshing accuracy with the rotating gear 4. The linear guide rail 9 is fixed inside the inner cavity 5, and the slider 10 is slidably connected to the linear guide rail 9. The slider 10 is fixedly connected to the gear condition 8 via the connecting piece 11. The sliding movement of the slider 10 ensures the stability of the gear condition 8 during movement and avoids meshing failure caused by gear condition 8 misalignment.

[0020] In this invention, a bearing, specifically a tapered roller bearing 14, is provided between the combined housing assembly 3 and the steering column 1. The design of the tapered roller bearing 14 allows the combined housing to rotate relative to the steering column 1. During use, the combined housing assembly 3 is fixed in place by external fixing, and the steering drive mechanism 2 drives the gear conditioner 8 to move back and forth via the drive cylinder 6. The gear conditioner 8 drives the rotating gear 4 to rotate, thereby realizing the rotation of the steering column 1. This design not only simplifies the device structure but also significantly reduces manufacturing and maintenance costs.

[0021] In actual operation, when steering column 1 needs to be steered, drive cylinder 6 is activated, and piston rod 7 pushes rack lug 12 through spherical bearing 13, thereby causing rack condition 8 to move back and forth along linear guide rail 9. The movement of rack condition 8 drives the rotating gear 4 meshing with it to rotate, and the rotation of rotating gear 4 further drives steering column 1 to rotate, completing the steering action. The cooperation between linear guide rail 9 and slider 10 ensures the stability of rack condition 8 during movement and avoids meshing failure caused by rack condition 8 misalignment. At the same time, the design of spherical bearing 13 enables flexible movement of rack condition 8 and ensures the meshing accuracy between rack condition 8 and rotating gear 4.

[0022] This utility model's modular housing design overcomes the shortcomings of traditional enclosed housings in installation, maintenance, and teaching. The left housing 15 and right housing 16 are connected by bolts 18 on the end cap 17. This design not only simplifies the assembly process but also facilitates subsequent disassembly and maintenance. The detachable design of the right housing 16 exposes the steering drive mechanism 2 and steering column 1 within the inner cavity 5, making them easier to observe and teach. In teaching scenarios, teachers can remove the right housing 16 to visually demonstrate the working principle of the steering drive mechanism 2 and steering column 1 within the inner cavity 5, significantly improving teaching quality. In maintenance scenarios, technicians can quickly open the right housing 16 to inspect and repair the core components within the inner cavity 5, significantly improving troubleshooting and repair efficiency.

[0023] Furthermore, this invention replaces the traditional hydraulic system with a transmission method using a cylinder, linear guide 9, and gear mechanism 8, significantly reducing manufacturing complexity and cost. The design of the drive cylinder 6 avoids the common oil leakage problem in hydraulic systems and also reduces the requirements for machining accuracy. General machining methods can meet the accuracy requirements of the device, thereby further reducing manufacturing costs. The cooperation between the linear guide 9 and the slider 10 ensures the stability of the gear mechanism 8 during movement, while the design of the spherical bearing 13 ensures the flexible movement of the gear mechanism 8. Together, they achieve precise meshing between the gear mechanism 8 and the rotating gear 4.

[0024] In summary, this invention, through the use of a cylinder, linear guide rail 9, and gear transmission 8, combined with a modular housing design, solves the problems of complex hydraulic systems, high manufacturing and maintenance costs, and the inconvenience of installation, maintenance, and teaching with enclosed housings in existing technologies. The device has a compact structure, low manufacturing cost, and is easy to install and maintain, while significantly improving the convenience of teaching and maintenance. In practical applications, this invention is suitable for simulation nose landing gear turning devices in the field of aircraft design technology, especially for teaching and research scenarios, and can also be widely used in fields such as aviation simulators.

[0025] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A simulated front landing gear steering device, comprising a steering column and a steering drive mechanism, characterized in that, It also includes a combined housing assembly, on which a rotating gear is coaxially mounted; the steering drive mechanism is disposed within the inner cavity of the combined housing assembly; the combined housing assembly includes a drive cylinder, a piston rod, and a gear mechanism, the drive cylinder being fixed inside the inner cavity, the gear mechanism being mounted and connected to the piston rod of the drive cylinder, and the rack end of the gear mechanism meshing with the rotating gear, the drive cylinder driving the gear mechanism to move back and forth, thereby driving the steering column to rotate.

2. The simulated nose landing gear turning device according to claim 1, characterized in that... The steering drive mechanism further includes a linear guide rail, a slider, and a connector. The linear guide rail is fixedly disposed in the inner cavity, the slider is slidably connected to the linear guide rail, and the slider is fixedly connected to the gear condition through the connector.

3. A simulated nose landing gear turning device according to claim 2, characterized in that... The toothed part is provided with a lug at one end near the piston rod, and the piston rod is connected to the lug via a spherical bearing.

4. A simulated nose landing gear turning device according to claim 1, characterized in that... A bearing is provided between the combined housing and the steering column.

5. A simulated nose landing gear turning device according to claim 4, characterized in that... The combined housing assembly includes a left housing, a right housing, and end caps. An inner cavity is formed between the left housing and the right housing, and end caps are provided at both ends of the inner cavity. The steering drive mechanism is fixed on the left housing.

6. A simulated nose landing gear turning device according to claim 5, characterized in that... The end cap is provided with multiple bolts, and the left and right housings are connected by the bolts on the end cap.

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