An auxiliary device for landing gear assembly

Abstract

The utility model discloses an auxiliary device for landing gear assembly, including transfer subassembly, be equipped with swing subassembly on transfer subassembly, be equipped with snatch and hold subassembly for clamping landing gear on swing subassembly, swing subassembly is used for driving snatch and hold subassembly swing to with snatch and hold subassembly clamping landing gear between the conversion of horizontal state and vertical state, when landing gear is in horizontal state, the airplane wheel of landing gear is contacted with ground and forms the support. The auxiliary device for landing gear assembly has the advantages of high assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of aircraft assembly technology, and in particular to an auxiliary device for landing gear assembly. Background Technology

[0002] As a core component of an aircraft operating on the ground, the landing gear's assembly process integrates the essence of precision mechanics and aerospace engineering. A modern landing gear system mainly consists of a shock absorber strut, shock absorber, wheel brakes, and retraction mechanism, using high-strength special steel or titanium alloy materials to withstand impact loads of tens of tons. This determines the enormous weight of the landing gear. Furthermore, because the landing gear is located at the bottom of the aircraft, auxiliary devices must be used during assembly to ensure its smooth progress.

[0003] Chinese Patent CN223408132U discloses a device for assisting in the assembly of aircraft landing gear. The device includes a rotating mechanism with a sliding mechanism fixedly connected to its top and a lifting mechanism fixedly connected to its bottom. The rotating mechanism includes a mounting frame, with a lead screw sleeve fixedly connected inside the frame. A left-hand lead screw is threaded into the sleeve, and a nut is fixedly connected to its top. A handwheel is fixedly connected to the surface of the nut, and a right-hand lead screw is threaded into the nut. A bent pin engages with the support arm and positioning shaft to fix the position of the support arm. During landing gear assembly, the support arm supports the component, and the bent pin ensures that it does not shift or wobble under weight and external forces, providing a stable support platform for the component. Furthermore, its design facilitates quick installation and disassembly by operators, improving assembly efficiency.

[0004] However, the aforementioned patent requires the landing gear to be lifted and installed on the sliding structure before it can be transported and installed. This not only requires the landing gear to bear the overall weight during transport, but also increases the lifting time and the need to replace equipment, which is time-consuming and labor-intensive. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an auxiliary device for landing gear assembly with high assembly efficiency.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: An auxiliary device for landing gear assembly includes a transfer assembly, a swing assembly on the transfer assembly, and a gripping assembly on the swing assembly for holding the landing gear. The swing assembly is used to drive the gripping assembly to swing so as to switch the landing gear held by the gripping assembly between a flat state and an upright state. When the landing gear is in the flat state, the aircraft wheels of the landing gear are in contact with the ground to form support.

[0007] As a further improvement to the above technical solution: The swing assembly includes two vertical frames spaced apart, with a swing shaft rotatably mounted between the vertical frames. One end of the swing shaft is provided with a drive mechanism for providing swing rotational force, and the gripping assembly is connected to the swing shaft.

[0008] The drive mechanism includes a swivel motor, a worm gear, and a worm wheel. The worm wheel is mounted on one end of the swivel shaft, the swivel motor is mounted on a vertical frame, the output end of the swivel motor is connected to the worm gear, and the worm wheel meshes with the worm gear for transmission.

[0009] The grabbing assembly includes a cantilever frame, one end of which is provided with a suspension rod and the other end is provided with an adjustment mechanism for sliding adjustment along the swing axis. The suspension rod has a clamping mechanism for clamping the landing gear.

[0010] The adjustment mechanism includes a translation slide that is slidably connected to the swing shaft. A locking pin is installed on the translation slide. The swing shaft is provided with a limiting platform along its length for locking with the locking pin.

[0011] The clamping mechanism includes a fixed clamping plate, a movable clamping plate, and a fixing bolt. The fixed clamping plate is connected to one end of the suspension rod, and the movable clamping plate is connected to the fixed clamping plate by the fixing bolt. A through hole is formed between the fixed clamping plate and the movable clamping plate for the insertion of the landing gear crossbeam.

[0012] The transfer assembly includes a frame, one end of which has a clearance groove for avoiding the landing gear.

[0013] A counterweight box is installed at the other end of the frame.

[0014] Multiple walking motors are installed at the bottom of the vehicle frame, and walking wheels are installed at the output end of the walking motors.

[0015] The bottom of the frame is also equipped with multiple electric push rods, and the telescopic ends of the electric push rods are equipped with anti-slip plates.

[0016] Compared with the prior art, the advantages of this utility model are: 1. The auxiliary device for landing gear assembly of this utility model integrates three major functions: transfer, swing, and grabbing, realizing full-process assistance for landing gear from loading and transfer to assembly. During the transfer process, the aircraft wheels can be used to support the landing gear to move along, reducing intermediate hoisting or equipment replacement links, and improving assembly efficiency.

[0017] 2. The auxiliary device for landing gear assembly of this utility model adopts a worm gear transmission method, which has a strong load-bearing capacity and can be used in scenarios with heavy landing gear; in addition, the worm gear has a self-locking characteristic, which can accurately control the landing gear tilting angle and reliably lock at any position to avoid accidental swinging.

[0018] 3. The auxiliary device for landing gear assembly of this utility model controls the swing angle through a swing motor and combines it with the stable lifting of the clamping mechanism to achieve precise alignment of the landing gear connection port, shorten the assembly time, and improve the installation quality.

[0019] 4. The auxiliary device for landing gear assembly of this utility model realizes automatic movement, lifting and angle adjustment of the landing gear through power components such as electric push rods and swing motors, reducing manual intervention and lowering labor intensity and operational risks. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the auxiliary device for landing gear assembly of this utility model during the auxiliary transport process.

[0021] Figure 2 This is a structural diagram of the auxiliary device for landing gear assembly according to this utility model during the assembly process.

[0022] Figure 3 This is a schematic diagram of the transfer component in the auxiliary device for landing gear assembly of this utility model.

[0023] Figure 4 This is a schematic diagram of the swing assembly in the auxiliary device for landing gear assembly of this utility model.

[0024] Figure 5 This is a schematic diagram of the gripping component in the auxiliary device for landing gear assembly of this utility model.

[0025] Legend: 1. Transfer assembly; 11. Frame; 12. Travel motor; 13. Travel wheel; 14. Battery; 15. Counterweight box; 16. Clearance groove; 17. Electric push rod; 18. Anti-slip support plate; 2. Swing assembly; 21. Vertical frame; 22. Swing motor; 23. Worm gear; 24. Worm wheel; 25. Swing shaft; 26. Limiting platform; 3. Grab assembly; 31. Translation slide; 32. Locking pin; 33. Cantilever frame; 34. Suspension rod; 35. Fixed clamp; 36. Movable clamp; 37. Through hole; 38. Fixing bolt. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation 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.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] like Figures 1 to 5 As shown, the auxiliary device for landing gear assembly in this embodiment includes a transfer assembly 1, a swing assembly 2 on the transfer assembly 1, and a gripping assembly 3 for clamping the landing gear on the swing assembly 2. The swing assembly 2 is used to drive the gripping assembly 3 to swing so as to switch the landing gear clamped by the gripping assembly 3 between a flat state and an upright state. When the landing gear is in a flat state, the aircraft wheels of the landing gear contact the ground to form support.

[0031] The auxiliary device for landing gear assembly in this embodiment has the following functions: During loading, the transfer component 1 moves to the landing gear location, and the gripping component 3 clamps the landing gear. At this time, the landing gear is in a flat position, and the aircraft wheels of the landing gear are in contact with the ground to form support. During transfer, the transfer component 1 moves to the installation position, and the landing gear moves along with it under the support of the aircraft wheels. During assembly, the swing component 2 drives the gripping component 3 to swing, converting the landing gear into an upright position, allowing the landing gear to be assembled. The auxiliary device for landing gear assembly in this embodiment integrates three major functions: transfer, swing, and gripping, realizing full-process assistance for landing gear from loading and transfer to assembly. During the transfer process, the aircraft wheels can be used to support the landing gear as it moves, reducing intermediate lifting or equipment replacement steps, resulting in high assembly efficiency.

[0032] Furthermore, in this embodiment, the swing assembly 2 includes two spaced-apart vertical frames 21, with a swing shaft 25 rotatably mounted between the vertical frames 21. One end of the swing shaft 25 is provided with a drive mechanism for providing swing rotational force, and the gripping assembly 3 is connected to the swing shaft 25. The swing shaft 25 is driven to rotate by the drive mechanism, thereby causing the gripping assembly 3 to swing. The structure is simple and reliable.

[0033] Furthermore, in this embodiment, the drive mechanism includes a swing motor 22, a worm gear 23, and a worm wheel 24. The worm wheel 24 is mounted on one end of the swing shaft 25, and the swing motor 22 is mounted on the vertical frame 21. The output end of the swing motor 22 is connected to the worm gear 23, and the worm wheel 24 meshes with the worm gear 23 for transmission. The worm wheel and worm gear transmission method has a strong load-bearing capacity and can be applied to scenarios with heavy landing gear. In addition, the worm wheel and worm gear have self-locking characteristics, which can precisely control the landing gear tilting angle and reliably lock at any position to avoid accidental swingback. By controlling the swing angle through the swing motor 22, combined with the stable lifting of the clamping mechanism, precise alignment of the landing gear connection port can be achieved, shortening the assembly time and improving the installation quality.

[0034] Preferably, in this embodiment, two gripping components 3 are provided. The two gripping components 3 can clamp both ends of the landing gear crossbeam, resulting in better stability.

[0035] Furthermore, in this embodiment, the grabbing assembly 3 includes a cantilever frame 33. One end of the cantilever frame 33 is provided with a suspension rod 34, and the other end is provided with an adjustment mechanism for sliding adjustment along the pivot axis 25. The suspension rod 34 has a clamping mechanism for clamping the landing gear. By adjusting the adjustment mechanism, the clamping position of the grabbing assembly 3 can be adjusted, making it highly adaptable. Moreover, since there are two grabbing assemblies 3, adjusting the adjustment mechanism can adjust the distance between the two grabbing assemblies 3, adapting to the beam width of various landing gear models, further improving applicability.

[0036] Furthermore, in this embodiment, the adjustment mechanism includes a translational slide 31 slidably connected to the swing shaft 25. A locking pin 32 is mounted on the translational slide 31, and the swing shaft 25 has a limiting platform 26 along its length for locking with the locking pin 32. By engaging the locking pin 32 with the limiting platform 26, the translational slide 31 can be locked and fixed, preventing swaying during landing gear rotation, thus improving safety and stability.

[0037] Furthermore, in this embodiment, the clamping mechanism includes a fixed clamping plate 35, a movable clamping plate 36, and a fixing bolt 38. The fixed clamping plate 35 is connected to one end of the suspension rod 34, and the movable clamping plate 36 is connected to the fixed clamping plate 35 through the fixing bolt 38. A through hole 37 for inserting the landing gear crossbeam is formed between the fixed clamping plate 35 and the movable clamping plate 36.

[0038] Furthermore, in this embodiment, the transfer assembly 1 includes a frame 11, one end of which has a clearance groove 16 for avoiding the landing gear. During loading, the landing gear can pass through the clearance groove 16 into the frame 11, which is simple in structure and easy to load.

[0039] Furthermore, in this embodiment, a counterweight box 15 is installed at the other end of the frame 11. By setting the counterweight box 15, the weight at both ends of the frame 11 can be balanced, preventing tipping due to center of gravity shift during the transfer of the landing gear, thus improving the safety of the transfer process.

[0040] Furthermore, in this embodiment, multiple walking motors 12 are installed at the bottom of the frame 11, and walking wheels 13 are installed at the output end of the walking motors 12. By driving the walking wheels 13 to rotate through the walking motors 12, the automatic movement of the transfer component 1 is realized without manual pushing, reducing labor intensity and improving transfer efficiency.

[0041] Furthermore, in this embodiment, multiple electric push rods 17 are also installed at the bottom of the frame 11, and anti-slip support plates 18 are installed at the telescopic ends of the electric push rods 17. When the transfer assembly 1 stops moving, the electric push rods 17 extend, causing the anti-slip support plates 18 to contact the ground, increasing the friction with the ground and preventing the transfer assembly 1 from sliding due to external forces, thus improving stability when parked; when movement is required, the electric push rods 17 retract, causing the anti-slip support plates 18 to leave the ground, allowing for normal movement. Through the electric push rods 17, the swing motor 22, and other power components, the automatic movement, lifting, and angle adjustment of the landing gear are realized, reducing manual intervention and lowering labor intensity and operational risks.

[0042] Preferably, in this embodiment, there are four walking motors 12 and four electric push rods 17, which are evenly distributed at the four corners of the frame 11, resulting in good stability; a battery 14 for power supply is installed inside the frame 11.

[0043] The specific working process of the auxiliary device for landing gear assembly in this embodiment is as follows: During loading, the battery 14 provides power, and the walking motor 12 drives the walking wheel 13 to rotate, which moves the frame 11 to the landing gear position, so that the landing gear passes through the clearance groove 16 into the frame 11. Then, the translation slide 31 is slid along the swing axis 25, the distance between the two clamping mechanisms is adjusted, the locking pin 32 is tightened, and the translation slide 31 is locked and fixed. Then, the landing gear crossbeam is inserted into the through hole 37 of the fixed clamping plate 35, and the movable clamping plate 36 is connected with the fixing bolt 38, so that the movable clamping plate 36 and the fixed clamping plate 35 clamp the landing gear crossbeam through the through hole 37. The landing gear only contacts the ground through the aircraft wheels to form support. During transport, the walking motor 12 drives the walking wheel 13 to rotate, which moves the frame 11 to the installation position. At the same time, the frame 11 pulls the landing gear through the swing assembly 2 and the grabbing assembly 3, which moves along with the aircraft wheels. During assembly, the swing motor 22 drives the worm gear 23 to rotate, and the meshing worm wheel 24 drives the swing shaft 25 to rotate. The swing shaft 25 then drives the clamping mechanism to rise through the cantilever frame 33 and suspension rod 34, pulling the landing gear connection port to the installation position. The rear frame 11 then supports the extension of the electric push rod 17, pushing the anti-slip plate 18 to contact the ground and form a support. The landing gear can then be assembled. This embodiment's auxiliary device for landing gear assembly realizes fully mechanized operation from horizontal handling to vertical installation of the landing gear, significantly improving safety, stability, adaptability, and operational efficiency.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present utility model using the methods and techniques disclosed above, or modify it into equivalent embodiments with equivalent changes, without departing from the spirit and technical solution of the present utility model. Therefore, any simple modifications, equivalent substitutions, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the content of the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An auxiliary device for landing gear assembly, characterized in that: The system includes a transfer assembly (1), on which a swing assembly (2) is provided. The swing assembly (2) is provided with a gripping assembly (3) for holding the landing gear. The swing assembly (2) is used to drive the gripping assembly (3) to swing so that the landing gear held by the gripping assembly (3) can be switched between a flat state and an upright state. When the landing gear is in a flat state, the aircraft wheels of the landing gear are in contact with the ground to form a support.

2. The auxiliary device for landing gear assembly according to claim 1, characterized in that: The swing assembly (2) includes two vertical frames (21) spaced apart, with a swing shaft (25) rotatably mounted between the vertical frames (21). One end of the swing shaft (25) is provided with a drive mechanism for providing swing rotation force, and the gripping assembly (3) is connected to the swing shaft (25).

3. The auxiliary device for landing gear assembly according to claim 2, characterized in that: The drive mechanism includes a swivel motor (22), a worm (23) and a worm wheel (24). The worm wheel (24) is installed at one end of the swivel shaft (25). The swivel motor (22) is mounted on the vertical frame (21). The output end of the swivel motor (22) is connected to the worm (23). The worm wheel (24) meshes with the worm (23) for transmission.

4. The auxiliary device for landing gear assembly according to claim 2, characterized in that: The grabbing assembly (3) includes a cantilever (33), one end of which is provided with a suspension rod (34) and the other end is provided with an adjustment mechanism for sliding adjustment along the swing axis (25). The suspension rod (34) has a clamping mechanism for clamping the landing gear.

5. The auxiliary device for landing gear assembly according to claim 4, characterized in that: The adjustment mechanism includes a translation slide (31) slidably connected to the swing shaft (25), a locking pin (32) is installed on the translation slide (31), and a limiting platform (26) is provided along the length direction of the swing shaft (25) for locking with the locking pin (32).

6. The auxiliary device for landing gear assembly according to claim 4, characterized in that: The clamping mechanism includes a fixed clamping plate (35), a movable clamping plate (36), and a fixing bolt (38). The fixed clamping plate (35) is connected to one end of the suspension rod (34). The movable clamping plate (36) is connected to the fixed clamping plate (35) by the fixing bolt (38). A through hole (37) for inserting the landing gear crossbeam is formed between the fixed clamping plate (35) and the movable clamping plate (36).

7. The auxiliary device for landing gear assembly according to any one of claims 1 to 6, characterized in that: The transfer assembly (1) includes a frame (11), one end of which is provided with a clearance groove (16) for avoiding the landing gear.

8. The auxiliary device for landing gear assembly according to claim 7, characterized in that: A counterweight box (15) is installed at the other end of the frame (11).

9. The auxiliary device for landing gear assembly according to claim 7, characterized in that: Multiple walking motors (12) are installed at the bottom of the frame (11), and walking wheels (13) are installed at the output end of the walking motors (12).

10. The auxiliary device for landing gear assembly according to claim 7, characterized in that: The bottom of the frame (11) is also equipped with multiple electric push rods (17), and the telescopic ends of the electric push rods (17) are equipped with anti-slip support plates (18).

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