An aircraft landing gear disassembly and assembly device

Abstract

The present invention provides an aircraft landing gear disassembly and assembly device, belonging to the technical field of aviation equipment, and solving the problem that the existing landing gear disassembly and assembly equipment is difficult to meet the requirements of efficient, precise and flexible disassembly and assembly in the modern aviation maintenance field. It includes a vehicle frame, with a movable frame arranged inside the vehicle frame, and the movable frame is driven by a first driving device; a movable plate is arranged on the vehicle frame, and the movable plate is driven by a second driving device; an arc-shaped guide rail is arranged on the movable plate, a support frame is arranged on the arc-shaped guide rail, a lifting device and a fixing device are arranged on the support frame, and a clamp is arranged at the top of the lifting device. In the present invention, through the coordinated operation of the first driving device, the second driving device and the lifting device, the disassembly and assembly device of the landing gear realizes the full-direction flexible adjustment of the tooling on the X, Y and Z axes. The design of the arc-shaped guide rail enables the support frame to also rotate flexibly within a certain angle range, further enhancing the adaptability and flexibility of the device.

Description

Technical Field

[0001] The present invention belongs to the technical field of aviation equipment, and particularly relates to a device for disassembling and assembling an aircraft landing gear. Background Art

[0002] In the field of aviation maintenance, the disassembly and assembly of landing gears is a key link in aircraft maintenance work, and its efficiency and safety have a crucial impact on the aircraft's attendance rate and maintenance costs. However, existing landing gear disassembly and assembly equipment generally has some limitations and is difficult to meet the precise operation requirements under complex working conditions.

[0003] Existing landing gear disassembly and assembly equipment has relatively single functions. Most can only perform linear adjustment in a limited direction, such as the vertical direction, and lack the ability of multi-axis linkage adjustment. This makes it often necessary to frequently adjust the position of the equipment during disassembly and assembly, and even rely on manual auxiliary positioning. Not only is the operation cumbersome, time-consuming, and laborious, but it may also introduce errors due to multiple adjustments, increasing safety risks. For example, common hydraulic lifting platforms and some simple disassembly and assembly trolleys can only achieve single lifting or translation functions, and it is difficult to perform precise positioning and disassembly when facing landing gears of different aircraft models and complex spatial position requirements. Specifically, the adjustment freedom of existing equipment is insufficient, and multi-degree-of-freedom adjustment of the X-axis, Y-axis, and Z-axis cannot be achieved. During the actual disassembly and assembly of landing gears, the connection parts between the landing gear and the aircraft fuselage usually have complex relative positions and postures, and the equipment needs to be able to flexibly adjust and adapt from multiple directions. However, current equipment often can only meet basic lifting and moving, and is unable to handle operations that require multi-directional and multi-angle coordinated adjustments. For example, when installing a landing gear, it is necessary to accurately align multiple connection points of the landing gear with the corresponding parts on the aircraft fuselage, but existing equipment is difficult to perform fine adjustments simultaneously in multiple axes, resulting in operators spending a lot of time and effort on repeated adjustments and trial installations, seriously affecting the disassembly and assembly efficiency. In summary, existing landing gear disassembly and assembly equipment has gradually become difficult to meet the requirements of modern aviation maintenance for efficient, precise, and flexible disassembly and assembly. There is an urgent need for a landing gear disassembly and assembly equipment that can achieve multi-degree-of-freedom adjustment to improve the efficiency and safety of landing gear disassembly and assembly and reduce maintenance costs. Summary of the Invention

[0004] In view of this, the present invention provides a cable storage device for the safety of construction sites to solve the problem that existing landing gear disassembly and assembly equipment is difficult to meet the requirements of modern aviation maintenance for efficient, precise, and flexible disassembly and assembly.

[0005] The technical solution adopted by the present invention is as follows:

[0006] An aircraft landing gear disassembly and assembly device, comprising a vehicle frame. A moving frame is arranged inside the vehicle frame, and the moving frame is driven by a first driving device to move along the width direction of the vehicle frame. A moving plate is arranged on the vehicle frame, and the moving plate is driven by a second driving device to move along the length direction of the vehicle frame. An arc-shaped guide rail is arranged on the moving plate, and a support frame slidably connected with the arc-shaped guide rail is arranged on the arc-shaped guide rail. A lifting device and a fixing device are arranged on the support frame. The lifting device is hinged with the support frame and can be rotated to a vertical state, and the fixing device is used for fixing the lifting device in the vertical state. A clamp is arranged at the top of the lifting device, and the clamp is used for fixing a tooling, and the tooling is used for clamping the landing gear.

[0007] In this technical solution, it should be noted that the rated load of the overall structure of the landing gear disassembly and assembly equipment is 550 kg, the overall external dimensions of the vehicle body are 2188 mm × 1420 mm × 1190 mm. Four lifting and mooring rings are designed on the vehicle frame, which has the mooring function in the hangar and can meet the requirements of safe mooring under sea state 9 in the hangar. At the same time, the lifting rings can also be used as mooring rings and can be firmly fixed to the shipboard mooring device. When carrying out disassembly and assembly work on the ship, it has the ability to prevent the fuselage from shaking when it is jacked up. It will not cause the equipment to slide due to the shaking of the ship and meets the requirements of safe storage and use under sea state 5 (including sea state 5) or below. The vehicle frame is welded by channel steel and steel plates, and the material is selected as high-quality carbon structural steel Q235 to meet the load-bearing requirements of the whole vehicle. Wheels are provided on the vehicle frame, and all are selected as heavy-duty vulcanized rubber casters. A towing bar is provided on one side of the vehicle frame, and the towing bar is connected to the bottom towing and steering mechanism. Swinging the towing bar left and right can drive the front wheels and rear wheels to turn. When the towing bar is lowered, the brake disc on the rear wheels can be actuated to brake. It can be towed and transported within the airport range by a tractor, and can meet the towing speed of 15 km / h and the turning speed of 5 km / h. When it can carry load and tow and transport within the warehouse range, it can reliably fix the object to be supported, and can meet the towing speed of 10 km / h and the turning speed of 5 km / h, meeting the use requirements. An accessory box is also provided on one side of the vehicle frame. The accessory box is bent and welded by carbon steel plate Q235, has good waterproof performance, is internally provided with foam, and is separated for storage, meeting the requirements of storing the accessories and components of the whole vehicle. In this solution, the moving frame is driven by the first driving device and can move smoothly along the width direction (Y-axis) of the vehicle frame, so as to roughly adjust the position of the tooling in the horizontal dimension and quickly move the area where the tooling is located to the corresponding position range near the landing gear, laying a foundation for subsequent fine disassembly and assembly operations. A moving plate is arranged on the vehicle frame, and the moving plate is driven by the second driving device and can move along the length direction (X-axis) of the vehicle frame. This design enables the tooling to have flexible adjustment ability in the longitudinal dimension. Combined with the Y-axis movement of the moving frame, it can approach all parts of the landing gear in all directions on the horizontal plane, meeting the disassembly and assembly requirements of landing gears of different models and different installation positions, and greatly expanding the versatility and adaptability of the device. An arc-shaped guide rail is carefully arranged on the moving plate, and a support frame is slidably connected to the slide rail. The arc-shaped guide rail design allows the support frame to flexibly adjust the angle within a certain arc range, providing more possibilities for dealing with the complex spatial attitude of the landing gear. The support frame bears the key lifting device, and the lifting device can drive the fixture to move along the vertical direction (Z-axis). Its stable lifting movement enables the tooling clamped by the fixture to accurately reach the height of the target disassembly and assembly part of the landing gear, realizing fine adjustment in the vertical direction.The lifting device is connected to the support frame in an articulated manner. In the non-working state, the lifting device can be folded up in close contact with the support frame, which greatly reduces the space occupied by the device, facilitates storage and transportation, and also reduces the risk of damage to the equipment when idle; when the landing gear needs to be disassembled and assembled, the lifting device can be smoothly unfolded and firmly locked in a vertical state by a fixing device to ensure stability and safety during the operation. The clamp is cleverly installed on the top of the lifting device, which is specially used to fix the tooling, and the tooling is a component that directly contacts and clamps the landing gear, which can firmly grasp the landing gear to provide protection for the disassembly and assembly operation. In summary, the landing gear disassembly and assembly device realizes the full-range and flexible adjustment of the tooling on the X, Y, and Z axes through the coordinated operation of the first drive device, the second drive device, and the lifting device. The design of the arc guide rail enables the support frame to rotate flexibly within a certain angle range, further enhancing the adaptability and flexibility of the device, and can better match the disassembly and assembly requirements of the landing gear at different angles and positions. With the folding function of the lifting device, the entire device is not only convenient to operate and accurately positioned, but also effectively saves space and reduces maintenance costs.

[0008] Preferably, the first driving device includes a first screw, which is rotatably connected to the frame and arranged along the width direction of the frame. The first screw is threadedly connected to the movable frame, and the movable frame is rotatably connected with a first guide wheel. The frame is provided with a first guide groove, which is arranged along the width direction of the frame, and the first guide wheel is slidably embedded in the first guide groove.

[0009] In this technical solution, it should be noted that when the first lead screw rotates, due to the threaded connection between the first lead screw and the moving frame, the moving frame will move smoothly along the Y-axis direction under the transmission of the thread. At the same time, the sliding of the first guide wheel in the first guide groove not only provides smooth guidance for the movement of the moving frame, but also effectively limits the shaking of the moving frame, ensuring the linearity and stability of the movement, thereby improving the accuracy and reliability of the device when adjusting in the Y-axis direction, and providing a solid foundation for the disassembly and assembly of the landing gear.

[0010] Preferably, the second driving device includes a second lead screw, which is arranged along the length direction of the frame, the second lead screw is rotatably connected to the movable frame, the second lead screw is threadedly connected to the movable plate, a second guide wheel is rotatably connected to the movable plate, a second guide groove is provided on the movable frame, the second guide groove is arranged along the length direction of the frame, and the second guide wheel is slidably embedded in the second guide groove.

[0011] In this technical solution, it should be noted that when the second lead screw rotates, due to its threaded connection with the moving plate, the moving plate will move smoothly along the X-axis under the drive of the thread. At the same time, the sliding of the second guide wheel in the second guide groove not only provides smooth guidance for the movement of the moving plate, but also effectively restricts the sway of the moving plate, ensuring the linearity and stability of the movement, thereby improving the accuracy and reliability of the device during adjustment in the X-axis direction and providing a solid foundation for the disassembly and assembly operations of the landing gear.

[0012] Preferably, a number of first fixing teeth are provided on the side wall of the arc-shaped guide rail. The number of the first fixing teeth are arranged at intervals along the circumferential direction of the arc-shaped guide rail. A slot is formed between two adjacent first fixing teeth. An expansion rod is fixedly connected to the support frame. One end of the output of the expansion rod is provided with a fixing plate. One end of the fixing plate is provided with a number of second fixing teeth. The number of the second fixing teeth face the first fixing teeth. The second fixing teeth can be inserted into the slot to fix the support frame.

[0013] In this technical solution, it should be noted that the above structural design enables the position and angle of the support frame on the arc-shaped guide rail to be fixed quickly and accurately. When it is necessary to adjust the position of the support frame, the expansion rod drives the fixing plate to move, so that the second fixing teeth are withdrawn from the slot. At this time, the support frame can slide along the arc-shaped guide rail to realize the adjustment of the angle or position. After adjusting to the appropriate position, the expansion rod moves in the reverse direction, pushing the second fixing teeth to be inserted into the slot between the corresponding first fixing teeth, thereby firmly fixing the support frame on the arc-shaped guide rail. This fixing method is not only convenient to operate, but also can provide stable support, ensuring the stability and safety of the device during the disassembly and assembly of the landing gear. The expansion rod can be an electric telescopic structure or a self-locking telescopic structure. For example, an electric telescopic rod consists of a motor, a push rod and a control device. The push rod is driven by the motor to expand and contract, which has the advantages of precise control, convenient operation, adjustable thrust, etc., and is suitable for scenarios that require frequent adjustment and precise positioning; the self-locking telescopic rod uses mechanical structures such as eccentric shafts and eccentric lock rings to realize the telescopic and self-locking functions, which has the characteristics of reliable self-locking, compact structure, simple operation and strong durability, and is suitable for occasions that require stable fixation and simple operation. The two telescopic rod structures have their own advantages and can be flexibly selected according to the specific requirements and usage scenarios of the landing gear disassembly and assembly device to meet different disassembly and assembly operation requirements and ensure the stability and reliability of the device during the disassembly and assembly of the landing gear.

[0014] Preferably, the lifting device includes an outer cylinder and a third lead screw. The outer cylinder is hinged to the support frame. The third lead screw is threadedly connected to the inner side of the outer cylinder. The clamp is provided at the top of the third lead screw.

[0015] In this technical solution, it should be noted that by manually rotating the handwheel to drive the third lead screw to rotate, due to the threaded connection relationship between the third lead screw and the outer cylinder, the rotational motion of the lead screw is converted into a linear motion of the fixture in the vertical direction, thereby realizing the lifting function of the fixture. This lead screw drive method has the advantages of accurate positioning, strong load-bearing capacity, stable operation, etc., and can effectively meet the requirements for the accuracy and stability of height adjustment during the disassembly and assembly of the landing gear. The fixture specifically includes a U-shaped groove and a stop rod threadedly connected to the U-shaped groove, and the stop rod can limit the opening at the top of the U-shaped groove. The tooling can specifically be a columnar structure, and its two ends are inserted into the U-shaped groove, and the upper part of the tooling is limited by the stop rod, while a clamping device cooperating with the landing gear is arranged in the middle of the tooling, thereby realizing the stable clamping and fixing of the landing gear.

[0016] Preferably, the fixing device includes a tie rod assembly. The tie rod assembly includes a quick-release pin, an upper tie rod, an adjusting rod, and a lower tie rod that are sequentially connected at the ends. The quick-release pin is hinged to the outer cylinder and is detachable. Both the upper tie rod and the lower tie rod are threadedly connected to the adjusting rod respectively. The thread of the upper tie rod is left-handed, and the thread of the lower tie rod is right-handed. The end of the lower tie rod away from the adjusting rod is hinged to the support frame.

[0017] In this technical solution, it should be noted that the threads at both ends of the adjusting rod are one left and one right, ensuring that the tension of the tie rod assembly can be adjusted without disassembling the adjusting rod. This design utilizes the opposite thread directions of the upper and lower tie rods to realize the linear motion of both of them driven synchronously by a single rotation of the adjusting rod, avoiding uneven tension, and the thread fit has a self-locking function, eliminating the need for an additional locking device. Both ends of the tie rod assembly are hinged to the support frame through quick-release pins, forming a stable force transmission chain. The quick-release pin design facilitates quick disassembly and assembly and is safe and reliable. This tie rod assembly can achieve millimeter-level precise control of the tension, adapt to different working conditions, and greatly shorten the disassembly and assembly time. It is especially suitable for scenarios where the tooling needs to be frequently replaced or for emergency maintenance. Its thread self-locking and quick-release pin mechanical fixation form a double insurance, ensuring the stable and safe operation of the main lifting lead screw combination in high-load or vibrating environments.

[0018] Preferably, one side of the support frame is provided with a handrail. The handrail is rotatably connected to the support frame through a rotating shaft. The rotating shaft is horizontally arranged, and a gear is fixedly sleeved on the rotating shaft. The support frame is also provided with a support platform for supporting the lifting device. A chute is provided through the support platform. A rack meshing with the gear is slidably connected to the inner side of the chute. The rack is vertically arranged, and the rack is connected to the support platform through a first spring. A through groove communicating with the chute is provided through the support platform. The through groove is perpendicular to the chute. A moving rod is slidably connected to the inner side of the through groove. One end of the moving rod is provided with a plug block, and the other end of the moving rod extends outside the through groove. The rack is provided with a plug block that is inserted and matched with the plug block. The top of the plug block is provided with a guiding surface, and the guiding surface is inclined. The moving rod is connected to the support platform through a second spring.

[0019] In this technical solution, it should be noted that in this technical solution, the handrail is used for the staff to rotate the support frame. In this solution, the handrail has the functions of self-folding and fixing and limiting the folded lifting device. The specific principle is as follows: When the lifting device rotates from the vertical state to the horizontal state, since the initial height of the lifting device is relatively high while the height of the handrail is relatively small, in the initial stage of rotation, the lifting device will not directly press down on the rack. This design ingeniously avoids the problem of the handrail rotating synchronously due to premature interference of the lifting device. Otherwise, the handrail will be blocked on the left side, causing movement interference. As the lifting device continues to rotate, when its height drops below the designed height of the handrail, while the lifting device continues to rotate downward, it begins to press down on the rack. The movement of the rack drives the rotation of the gear meshed with it, and the rotation of the gear is transmitted through the rotating shaft, causing the handrail to rotate counterclockwise accordingly. Finally, when the lifting device completely rotates to the horizontal state, the handrail also just completes the folding action and naturally presses on the top of the lifting device, achieving stable limiting of the lifting device. During the downward movement of the rack, its bottom gradually contacts the guiding surface on the inserting block. The inclined design of the guiding surface enables the rack to smoothly squeeze the inserting block during the downward movement, forcing the inserting block to overcome the elastic force of the second spring and retract into the through groove. When the rack continues to move downward until the moment when the slot is directly opposite to the inserting block, the inserting block automatically pops out under the restoring force of the second spring and accurately presses into the slot, completing the self-locking action, thereby firmly fixing the handrail and the lifting device in the folded limiting state. At this time, the lifting device is pressed by the handrail and remains stable, and will not easily change its position due to external forces. When it is necessary to rotate the lifting device back to the vertical state, the operator only needs to pull the moving rod outwards to make the inserting block move out of the slot, and the limiting can be released. At this time, the handrail is no longer restricted by the inserting block and can rotate freely, and the lifting device can also smoothly return to the vertical working state. The whole process is simple to operate and does not require additional tool assistance, greatly improving the convenience and safety of equipment use. This linkage design has the following beneficial effects:

[0020] Operational convenience: Through the linkage design of the armrest and the lifting device, when the staff rotates the lifting device, the folding and fixing of the armrest can be automatically achieved without additional operations. This integrated operation process simplifies the operation steps and improves work efficiency, especially in scenarios where the equipment status needs to be adjusted frequently. Space utilization: When the lifting device rotates to the horizontal state, the armrest automatically folds and presses above the lifting device, effectively reducing the space occupied by the equipment in the non-working state. This is very beneficial for the storage and transportation of the equipment and can save valuable workshop or hangar space. Safety improvement: The linkage design ensures the stability of the lifting device in the horizontal state. After the armrest is folded, it forms a physical limit for the lifting device, preventing it from accidentally moving or shaking due to external forces, thus ensuring the safety of the equipment and the surrounding environment. In addition, the self-locking function further enhances the reliability of the fixation and avoids the equipment from loosening due to vibration or other interferences. Stability enhancement: The meshing transmission of the rack and the gear and the self-locking mechanism of the plug ensure the precise positioning and stable retention of the armrest and the lifting device during the folding and fixing process. The stability of this mechanical structure is crucial for high-altitude operations or high-precision disassembly and assembly tasks, and can effectively reduce operation errors and safety risks. Maintenance convenience: When the lifting device needs to be restored to the vertical state, simply pulling the moving rod can release the limit, and the operation is simple and fast. This design not only facilitates daily maintenance and equipment status switching, but also reduces human errors that may be caused by complex operations. Generally speaking, this linkage design organically combines the folding of the armrest with the fixing of the lifting device through a clever mechanical structure, achieving the simplification of operation, the optimal utilization of space, and the improvement of safety and stability, significantly enhancing the practicality and reliability of the equipment.

[0021] Preferably, a column is further provided on the support frame. The column is located on one side of the lifting device. A moving seat slidably connected to the column is provided on the column. The moving seat is fixed to the column through a fixing component. A fourth lead screw is threadedly connected to the moving seat. A clamping component for clamping the tail of the landing gear is provided on the fourth lead screw.

[0022] In this technical solution, it should be noted that the clamping assembly has the same structure as the above-mentioned fixture. The moving seat can move along the height direction of the column, and thus the height of the clamping assembly can be adjusted. The fourth lead screw can adjust the distance between the clamping assembly and the lifting device. The clamping assembly is used to clamp the tail of the landing gear, so that the landing gear can be in an inclined state to reduce the height. This tilting function is applicable in an environment with limited space, which can effectively reduce the height of the landing gear and facilitate the disassembly and assembly operations in a low space. Compact structure: The clamping assembly has the same structure as the above-mentioned fixture. This unity in design not only simplifies the production and manufacturing process, but also facilitates maintenance and replacement, reducing the maintenance cost of the equipment. Stability: The coordinated action of the clamping assembly and the lifting device ensures the stability of the landing gear in the inclined state, preventing shaking or tipping caused by the center of gravity shift, and ensuring the safety of the disassembly and assembly operations.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0024] 1. In the present invention, the landing gear disassembly and assembly device realizes the full-range flexible adjustment of the tooling on the X, Y, and Z axes through the coordinated operation of the first driving device, the second driving device, and the lifting device. The design of the arc-shaped guide rail enables the support frame to also rotate flexibly within a certain angle range, further enhancing the adaptability and flexibility of the device, and being able to better match the disassembly and assembly requirements of the landing gear at different angles and positions. With the folding function of the lifting device, the entire device is not only convenient to operate and accurately positioned, but also can effectively save space and reduce the maintenance cost.

[0025] 2. In the present invention, the threads at both ends of the adjusting rod are left-handed and right-handed, ensuring that the adjusting rod can adjust the tightness of the tie rod assembly without disassembly. This design utilizes the opposite thread directions of the upper and lower tie rods to realize the linear movement of synchronously driving both of them by a single rotation of the adjusting rod, avoiding uneven tension, and the thread fit has a self-locking function without an additional locking device. Both ends of the tie rod assembly are hinged to the support frame through quick-release pins, forming a stable force transmission chain. The quick-release pin design is convenient for quick disassembly and assembly and is safe and reliable. The tie rod assembly can achieve precise control of the tension at the millimeter level, adapt to different working conditions, greatly shorten the disassembly and assembly time, and is especially suitable for scenarios of frequent tooling replacement or emergency maintenance. Its thread self-locking and quick-release pin mechanical fixation form a double insurance to ensure the stable and safe operation of the main lifting lead screw combination in a high-load or vibrating environment.

[0026] 3. In the present invention, the linkage design between the armrest and the lifting device has the following effects: Convenience: When the staff rotates the lifting device, the folding and fixing of the armrest can be automatically achieved without additional operations. This integrated operation process simplifies the operation steps and improves work efficiency, especially in scenarios where the device state needs to be frequently adjusted. Space utilization: When the lifting device rotates to the horizontal state, the armrest automatically folds and presses above the lifting device, effectively reducing the space occupied by the device in the non-working state. This is very beneficial for the storage and transportation of the device, and can save valuable workshop or hangar space. Safety improvement: The linkage design ensures the stability of the lifting device in the horizontal state. After the armrest is folded, it forms a physical limit to the lifting device, preventing it from accidentally moving or shaking due to external forces, thereby ensuring the safety of the device and the surrounding environment. In addition, the self-locking function further enhances the reliability of fixation, avoiding the device from loosening due to vibration or other disturbances. Stability enhancement: The meshing transmission of the rack and gear and the self-locking mechanism of the plug ensure the precise positioning and stable retention of the armrest and the lifting device during the folding and fixing process. The stability of this mechanical structure is crucial for high-altitude operations or high-precision disassembly and assembly tasks, and can effectively reduce operation errors and safety risks. Maintenance convenience: When it is necessary to restore the lifting device to the vertical state, simply pulling the moving rod can release the limit, and the operation is simple and fast. This design not only facilitates daily maintenance and device state switching, but also reduces human errors that may be caused by complex operations. Generally speaking, this linkage design organically combines the folding of the armrest with the fixing of the lifting device through a clever mechanical structure, realizing the simplification of operation, the optimal utilization of space, and the improvement of safety and stability, significantly enhancing the practicality and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be described by way of examples with reference to the accompanying drawings, where:

[0028] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 is a three-dimensional structural schematic diagram of the vehicle frame, moving frame and moving plate of the present invention;

[0030] Figure 3 is as Figure 2 is an obliquely upward three-dimensional structural schematic diagram;

[0031] Figure 4 is a three-dimensional structural schematic diagram of the arc-shaped guide rail of the present invention;

[0032] Figure 5 is a three-dimensional structural schematic diagram of the lifting device and fixing device of the present invention;

[0033] Figure 6Schematic perspective view of the fixing device of the present invention;

[0034] Figure 7 Schematic perspective view of the landing gear being fixed by the tooling and clamping assembly when tilted;

[0035] Figure 8 Schematic perspective view of the support frame, lifting device and armrest of the present invention;

[0036] Figure 9 Schematic perspective view of the folded lifting device and armrest of the present invention;

[0037] Figure 10 Schematic perspective view of the support platform and armrest of the present invention;

[0038] Figure 11 Schematic perspective sectional view of the support platform of the present invention;

[0039] Figure 12 Schematic view of the structure of the column of the present invention;

[0040] Wherein: 1 - vehicle frame, 2 - moving plate, 3 - arc-shaped guide rail, 4 - support frame, 5 - lifting device, 6 - fixture, 7 - towing bar, 8 - wheel, 9 - accessory box, 10 - column, 11 - fixing device, 12 - armrest, 13 - first lead screw, 14 - second lead screw, 15 - first roller, 16 - first guide groove, 17 - second guide groove, 18 - second roller, 20 - first fixed tooth, 21 - fixing plate, 22 - second fixed tooth, 23 - telescopic rod, 24 - outer cylinder, 25 - third lead screw, 27 - lower pull rod, 28 - adjusting rod, 29 - upper pull rod, 30 - quick-release pin, 31 - support platform, 32 - rack, 33 - rotating shaft, 34 - gear, 35 - first spring, 36 - moving rod, 37 - second spring, 38 - slot, 40 - chute, 41 - insertion block, 42 - guiding surface, 43 - moving frame, 44 - moving seat, 45 - fourth lead screw, 46 - clamping assembly, 47 - U-shaped groove, 48 - retaining rod. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0042] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0043] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0044] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0045] In the present invention, unless otherwise clearly defined and limited, the first feature being “on” or “under” the second feature may include direct contact between the first and second features, or may include indirect contact between the first and second features through additional features therebetween. Moreover, the first feature being “above”, “over” and “on top of” the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being “under”, “beneath” and “underneath” the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0046] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0047] Embodiment 1

[0048] As Figures 1-12As shown, this embodiment proposes an aircraft landing gear disassembly and assembly device, including a frame 1, a movable frame 43 is provided on the inner side of the frame 1, and the movable frame 43 is driven by a first driving device to move along the width direction of the frame 1; a movable plate 2 is provided on the frame 1, and the movable plate 2 is driven by a second driving device to move along the length direction of the frame 1; an arc guide rail 3 is provided on the movable plate 2, and a support frame 4 slidably connected thereto is provided on the arc guide rail 3, and a lifting device 5 and a fixing device 11 are provided on the support frame 4, the lifting device 5 is hinged to the support frame 4 and can be rotated to a vertical state, the fixing device 11 is used to fix the lifting device 5 in the vertical state, and a clamp 6 is provided on the top of the lifting device 5, and the clamp 6 is used to fix a tooling, and the tooling is used to clamp the landing gear. It should be noted that the overall structural rated load of the landing gear disassembly and assembly equipment is 550kg, the body size is 2188mm×1420mm×1190mm, and the frame 1 is designed with four lifting and mooring rings, which have the function of mooring in the hangar and can meet the requirements of safe mooring in the hangar under the ninth level of sea conditions. At the same time, the lifting ring can also be used as a mooring ring, which can be firmly fixed to the ship's mooring device, and has the ability to prevent the fuselage from shaking in the jacked-up state when disassembling and assembling on the ship. The equipment will not slide due to the shaking of the ship, and it meets the requirements for safe storage and use in sea conditions below level 5 (including level 5). The frame 1 is welded with channel steel and steel plate, and the material is high-quality carbon structural steel Q235, which meets the load-bearing requirements of the whole vehicle. The frame 1 is provided with wheels 8, all of which are heavy-duty vulcanized rubber casters. A traction rod 7 is provided on one side of the frame 1. The traction rod 7 is connected to the bottom traction steering mechanism. The traction rod 7 can be swung left and right to drive the front wheel 8 and the rear wheel 8 to turn. When the traction rod 7 is lowered, the brake disc on the rear wheel 8 can be activated to brake. It can be towed and transported within the airport by a tractor, and can meet the traction speed of 15km / h and the turning speed of 5km / h. When it can be towed and transported within the warehouse with a load, it can reliably fix the protected object, and can meet the traction speed of 10km / h and the turning speed of 5km / h, meeting the use requirements. An accessory box 9 is also provided on one side of the frame 1. The accessory box 9 is made of Q235 carbon steel plate bent and welded, has good waterproofness, built-in foam, and is stored separately to meet the requirements for storing accessories and components of the whole vehicle. In this solution, the mobile frame 43 is driven by the first driving device and can move smoothly along the width direction (Y axis) of the frame 1, so as to roughly adjust the position of the tooling in the lateral dimension, and quickly move the area where the tooling is located to the corresponding position range near the landing gear, laying the foundation for subsequent fine disassembly and assembly operations. A mobile plate 2 is arranged on the frame 1, and the mobile plate 2 is driven by the second driving device and can move along the length direction (X axis) of the frame 1.This design enables the tooling to have flexible adjustment capabilities in the longitudinal dimension. Combined with the Y-axis movement of the mobile frame 43, it can approach all parts of the landing gear in all directions on the horizontal plane, meeting the disassembly and assembly requirements of landing gears of different models and different installation positions, greatly expanding the versatility and adaptability of the device. The movable plate 2 is carefully provided with an arc guide rail 3, and a support frame 4 is slidably connected to the slide rail. The design of the arc guide rail 3 allows the support frame 4 to flexibly adjust the angle within a certain arc range, providing more possibilities for dealing with the complex spatial posture of the landing gear. The support frame 4 carries the key lifting device 5, which can drive the clamp 6 to move in the vertical direction (Z axis). Its stable lifting movement enables the tooling clamped by the clamp 6 to accurately reach the height of the target disassembly and assembly part of the landing gear, realizing fine adjustment in the vertical direction. The lifting device 5 is connected to the support frame 4 in an articulated manner. In the non-working state, the lifting device 5 can be folded up in close contact with the support frame 4, which greatly reduces the space occupied by the device, facilitates storage and transportation, and also reduces the risk of damage to the equipment when it is idle; when the landing gear needs to be disassembled and assembled, the lifting device 5 can be smoothly unfolded and firmly locked in a vertical state by the fixing device 11 to ensure stability and safety during the operation. The clamp 6 is cleverly installed on the top of the lifting device 5 and is specifically used to fix the tooling. The tooling is a component that directly contacts and clamps the landing gear, which can firmly grasp the landing gear and provide protection for the disassembly and assembly operation. In summary, the landing gear disassembly and assembly device realizes the full-range and flexible adjustment of the tooling on the X, Y, and Z axes through the coordinated operation of the first drive device, the second drive device, and the lifting device 5. The design of the arc guide rail 3 enables the support frame 4 to rotate flexibly within a certain angle range, further enhancing the adaptability and flexibility of the device, and can better match the disassembly and assembly requirements of the landing gear at different angles and positions. With the folding function of the lifting device 5, the entire device is not only easy to operate and accurately positioned, but also can effectively save space and reduce maintenance costs.

[0049] like Figure 2As shown, in this embodiment, the first driving device includes a first lead screw 13. The first lead screw 13 is rotatably connected to the vehicle frame 1, and the first lead screw 13 is arranged along the width direction of the vehicle frame 1. The first lead screw 13 is threadedly connected to the moving frame 43. A first guide wheel is rotatably connected to the moving frame 43. A first guide groove 16 is provided on the vehicle frame 1. The first guide groove 16 is arranged along the width direction of the vehicle frame 1. The first guide wheel is slidably embedded in the first guide groove 16. It should be noted that when the first lead screw 13 rotates, due to its threaded connection with the moving frame 43, the moving frame 43 will smoothly move along the Y-axis direction under the transmission of the thread. At the same time, the sliding of the first guide wheel in the first guide groove 16 not only provides a smooth guide for the movement of the moving frame 43, but also effectively restricts the shaking of the moving frame 43, ensuring the linearity and stability of the movement, thereby improving the accuracy and reliability of the device during adjustment in the Y-axis direction, providing a solid foundation for the landing gear disassembly and assembly operation.

[0050] As Figure 3 shown, in this embodiment, the second driving device includes a second lead screw 14. The second lead screw 14 is arranged along the length direction of the vehicle frame 1. The second lead screw 14 is rotatably connected to the moving frame 43. The second lead screw 14 is threadedly connected to the moving plate 2. A second guide wheel is rotatably connected to the moving plate 2. A second guide groove 17 is provided on the moving frame 43. The second guide groove 17 is arranged along the length direction of the vehicle frame 1. The second guide wheel is slidably embedded in the second guide groove 17. It should be noted that when the second lead screw 14 rotates, due to its threaded connection with the moving plate 2, the moving plate 2 will smoothly move along the X-axis direction under the transmission of the thread. At the same time, the sliding of the second guide wheel in the second guide groove 17 not only provides a smooth guide for the movement of the moving plate 2, but also effectively restricts the shaking of the moving plate 2, ensuring the linearity and stability of the movement, thereby improving the accuracy and reliability of the device during adjustment in the X-axis direction, providing a solid foundation for the landing gear disassembly and assembly operation.

[0051] As Figure 4As shown, in this embodiment, a number of first fixing teeth 20 are provided on the side wall of the arc-shaped guide rail 3. The a number of first fixing teeth 20 are arranged at intervals along the circumferential direction of the arc-shaped guide rail 3. A slot 38 is formed between two adjacent first fixing teeth 20. A telescopic rod 23 is fixedly connected to the support frame 4. A fixing plate 21 is provided at the output end of the telescopic rod 23. A number of second fixing teeth 22 are provided at one end of the fixing plate 21. The a number of second fixing teeth 22 face the first fixing teeth 20. The second fixing teeth 22 can be inserted into the slot 38 to fix the support frame 4. It should be noted that the above structural design enables the position and angle of the support frame 4 on the arc-shaped guide rail 3 to be fixed quickly and accurately. When the position of the support frame 4 needs to be adjusted, the telescopic rod 23 drives the fixing plate 21 to move, so that the second fixing teeth 22 are withdrawn from the slot 38. At this time, the support frame 4 can slide along the arc-shaped guide rail 3 to achieve angle or position adjustment. After adjusting to the appropriate position, the telescopic rod 23 moves in the reverse direction, pushing the second fixing teeth 22 into the slot 38 between the corresponding first fixing teeth 20, thereby firmly fixing the support frame 4 on the arc-shaped guide rail 3. This fixing method is not only convenient to operate, but also can provide stable support, ensuring the stability and safety of the device during the disassembly and assembly of the landing gear. The telescopic rod 23 can be an electric telescopic structure or a self-locking telescopic structure. For example, the electric telescopic rod 23 is composed of a motor, a push rod and a control device. The push rod is driven by the motor to expand and contract, which has the advantages of precise control, convenient operation, adjustable thrust, etc., and is suitable for scenarios that require frequent adjustment and precise positioning; the self-locking telescopic rod 23 uses mechanical structures such as an eccentric shaft and an eccentric lock ring to achieve the functions of expansion and contraction and self-locking, and has the characteristics of reliable self-locking, compact structure, simple operation, and strong durability, and is suitable for occasions that require stable fixing and simple operation. The two telescopic rod 23 structures each have their own advantages, and can be flexibly selected according to the specific requirements and usage scenarios of the landing gear disassembly and assembly device to meet different disassembly and assembly operation requirements, ensuring the stability and reliability of the device during the landing gear disassembly and assembly process.

[0052] As Figure 5As shown, in this embodiment, the lifting device 5 includes an outer cylinder 24 and a third lead screw 25. The outer cylinder 24 is hinged to the support frame 4, the third lead screw 25 is threadedly connected to the inner side of the outer cylinder 24, and the fixture 6 is provided at the top of the third lead screw 25. It should be noted that by manually rotating the handwheel to drive the rotation of the third lead screw 25, due to the threaded connection relationship between the third lead screw 25 and the outer cylinder 24, the rotational motion of the lead screw is converted into a linear motion of the fixture 6 in the vertical direction, thereby realizing the lifting function of the fixture 6. This lead screw drive method has the advantages of accurate positioning, strong load-bearing capacity, and stable operation, and can effectively meet the requirements for the accuracy and stability of height adjustment during the disassembly and assembly of the landing gear. The fixture 6 specifically includes a U-shaped groove 47 and a retaining rod 48 threadedly connected to the U-shaped groove 47. The retaining rod 48 can limit the opening at the top of the U-shaped groove 47. The tooling can specifically be a columnar structure, and its two ends are inserted into the U-shaped groove 47. The upper part of the tooling is limited by the retaining rod 48, and a clamping device cooperating with the landing gear is provided in the middle of the tooling, thereby realizing the stable clamping and fixing of the landing gear.

[0053] As Figure 6 shown, in this embodiment, the fixing device 11 includes a tie rod assembly. The tie rod assembly includes a quick-release pin 30, an upper tie rod 29, an adjusting rod 28, and a lower tie rod 27 that are sequentially connected at the ends. The quick-release pin 30 is hinged to the outer cylinder 24 and is detachable. The upper tie rod 29 and the lower tie rod 27 are both threadedly connected to the adjusting rod 28. The thread of the upper tie rod 29 is left-handed, and the thread of the lower tie rod 27 is right-handed. The end of the lower tie rod 27 away from the adjusting rod 28 is hinged to the support frame 4. It should be noted that the threads at both ends of the adjusting rod 28 are one left and one right, ensuring that the tightness of the tie rod assembly can be adjusted without disassembly. This design utilizes the opposite thread directions of the upper and lower tie rods 27 to realize the linear motion of both being synchronously driven by a single rotation of the adjusting rod 28, avoiding uneven tension, and the thread fit has a self-locking function, eliminating the need for an additional locking device. Both ends of the tie rod assembly are hinged to the support frame 4 through the quick-release pin 30 to form a stable force transmission chain. The quick-release pin 30 is designed for quick disassembly and assembly and is safe and reliable. This tie rod assembly can achieve millimeter-level precise control of the tension, adapt to different working conditions, and greatly shorten the disassembly and assembly time. It is especially suitable for scenarios where the tooling needs to be frequently replaced or for emergency maintenance. Its thread self-locking and the mechanical fixation of the quick-release pin 30 form a double insurance to ensure the stable and safe operation of the main lifting lead screw combination in high-load or vibrating environments.

[0054] As Figure 12As shown, in this embodiment, a column 10 is further provided on the support frame 4. The column 10 is located on one side of the lifting device 5. A moving seat 44 slidably connected to the column 10 is provided on the column 10. The moving seat 44 is fixed to the column 10 through a fixing component. A fourth lead screw 45 is threadedly connected to the moving seat 44. A clamping component 46 for clamping the tail of the landing gear is provided on the fourth lead screw 45. It should be noted that the clamping component 46 has the same structure as the above-mentioned fixture 6. The moving seat 44 can move along the height direction of the column 10, and thus the height of the clamping component 46 can be adjusted. The fourth lead screw 45 can adjust the distance between the clamping component 46 and the lifting device 5. The clamping component 46 is used to clamp the tail of the landing gear, so that the landing gear can be in an inclined state to reduce the height. This inclined function is applicable in an environment with limited space, which can effectively reduce the height of the landing gear and facilitate the disassembly and assembly operations in a low space. Compact structure: The clamping component 46 has the same structure as the above-mentioned fixture 6. This unity in design not only simplifies the production and manufacturing process but also facilitates maintenance and replacement, reducing the maintenance cost of the equipment. Stability: The coordinated action of the clamping component 46 and the lifting device 5 ensures the stability of the landing gear in an inclined state, preventing shaking or tipping caused by the center of gravity offset and guaranteeing the safety of the disassembly and assembly operations.

[0055] Embodiment 2

[0056] As Figures 8-11As shown, this embodiment is substantially the same as the above embodiment, except that an armrest 12 is provided on one side of the support frame 4. The armrest 12 is rotatably connected to the support frame 4 through a rotating shaft 33. The rotating shaft 33 is horizontally arranged, and a gear 34 is fixedly sleeved on the rotating shaft 33. A support platform 31 for supporting the lifting device 5 is further provided on the support frame 4. A chute 40 is provided through the support platform 31. A rack 32 meshing with the gear 34 is slidably connected inside the chute 40. The rack 32 is vertically arranged, and the rack 32 is connected to the support platform 31 through a first spring 35. A through groove communicating with the chute 40 is provided through the support platform 31. The through groove is perpendicular to the chute 40. A moving rod 36 is slidably connected inside the through groove. One end of the moving rod 36 is provided with a plug 41, and the other end of the moving rod 36 extends outside the through groove. The rack 32 is provided with a plug slot 38 for plugging and cooperating with the plug 41. A guiding surface 42 is provided on the top of the plug 41. The guiding surface 42 is inclined. The moving rod 36 is connected to the support platform 31 through a second spring 37. It should be noted that in this technical solution, the armrest 12 is used for the staff to rotate the support frame 4. In this solution, the armrest 12 has the functions of self-folding and fixing and limiting the folded lifting device 5. The specific principle is as follows: When the lifting device 5 rotates from the vertical state to the horizontal state, since the initial height of the lifting device 5 is relatively high and the height of the armrest 12 is relatively small, in the initial stage of rotation, the lifting device 5 will not directly press down the rack 32. This design cleverly avoids the problem that the armrest 12 rotates synchronously due to premature interference of the lifting device 5. Otherwise, the armrest 12 will be blocked on the left side, causing movement interference. As the lifting device 5 continues to rotate, when its height drops below the designed height of the armrest 12, while the lifting device 5 continues to rotate downward, it begins to press down the rack 32. The movement of the rack 32 drives the gear 34 meshing with it to rotate. The rotation of the gear 34 is transmitted through the rotating shaft 33, causing the armrest 12 to rotate counterclockwise accordingly. Finally, when the lifting device 5 completely rotates to the horizontal state, the armrest 12 also just completes the folding action and naturally presses on the top of the lifting device 5, realizing stable limiting of the lifting device 5. During the downward movement of the rack 32, its bottom gradually contacts the guiding surface 42 on the plug 41. The inclined design of the guiding surface 42 enables the rack 32 to smoothly squeeze the plug 41 during the downward movement, forcing the plug 41 to retract into the through groove against the elastic force of the second spring 37. When the rack 32 continues to move downward until the moment when the plug slot 38 is directly opposite to the plug 41, the plug 41 automatically pops out under the restoring force of the second spring 37 and accurately presses into the plug slot 38 to complete the self-locking action, thereby firmly fixing the armrest 12 and the lifting device 5 in the folded limiting state. At this time, the lifting device 5 is pressed by the armrest 12 and remains stable, and will not easily change its position due to external forces.When it is necessary to rotate the lifting device 5 back to the vertical state, the operator only needs to pull the moving rod 36 outwards, so that the insertion block 41 is removed from the slot 38, and the limit can be released. At this time, the armrest 12 is no longer restricted by the insertion block 41 and can rotate freely, and the lifting device 5 can also be smoothly restored to the vertical working state. The whole process is easy to operate and does not require additional tool assistance, greatly improving the convenience and safety of equipment use. This linkage design has the following beneficial effects: Operational convenience: Through the linkage design of the armrest 12 and the lifting device 5, when the staff rotates the lifting device 5, the folding and fixing of the armrest 12 can be automatically realized without additional operations. This integrated operation process simplifies the operation steps and improves work efficiency, especially in scenarios where the equipment state needs to be adjusted frequently. Space utilization: When the lifting device 5 rotates to the horizontal state, the armrest 12 automatically folds and presses on the top of the lifting device 5, effectively reducing the space occupied by the equipment in the non-working state. This is very beneficial for the storage and transportation of the equipment and can save valuable workshop or hangar space. Safety improvement: The linkage design ensures the stability of the lifting device 5 in the horizontal state. After the armrest 12 is folded, it forms a physical limit to the lifting device 5, preventing it from accidentally moving or shaking due to external forces, thus ensuring the safety of the equipment and the surrounding environment. In addition, the self-locking function further enhances the reliability of the fixation and avoids the equipment from loosening due to vibration or other interferences. Stability enhancement: The meshing transmission of the rack 32 and the gear 34 and the self-locking mechanism of the insertion block 41 ensure the precise positioning and stable retention of the armrest 12 and the lifting device 5 during the folding and fixing process. The stability of this mechanical structure is crucial for high-altitude operations or high-precision disassembly and assembly tasks, and can effectively reduce operation errors and safety risks. Maintenance convenience: When it is necessary to restore the lifting device 5 to the vertical state, only need to simply pull the moving rod 36 to release the limit, and the operation is simple and fast. This design not only facilitates daily maintenance and equipment state switching, but also reduces human errors that may be caused by complex operations. Generally speaking, this linkage design organically combines the folding of the armrest 12 with the fixation of the lifting device 5 through a clever mechanical structure, realizing the simplification of operation, the optimal utilization of space, and the improvement of safety and stability, significantly enhancing the practicability and reliability of the equipment.

[0057] The working principle of the present invention is as follows:

[0058] Initial state of the equipment:

[0059] The landing gear disassembly and assembly device is in the standby state, the moving frame 43 and the moving plate 2 are in the initial positions, the support frame 4 slides along the arc-shaped guide rail 3 to an appropriate angle, the lifting device 5 is in the vertical state and is locked by the fixing device 11, and the clamping assembly 46 is at the initial height.

[0060] Preparation for landing gear disassembly and assembly:

[0061] According to the position and model of the landing gear, the operator controls the first driving device and the second driving device to drive the moving frame 43 to move along the Y-axis direction and the moving plate 2 to move along the X-axis direction respectively, so as to roughly move the tooling to the corresponding position range near the landing gear.

[0062] Adjust the position of the support frame 4 on the arc-shaped guide rail 3 to adapt to the spatial attitude of the landing gear.

[0063] According to the need, move the moving seat 44 along the height direction of the column 10 to adjust the height of the clamping assembly 46 so that it is aligned with the tail of the landing gear.

[0064] Landing gear disassembly and assembly process:

[0065] The operator manually rotates the handwheel to drive the third lead screw 25 to rotate, so that the fixture 6 moves along the vertical direction (Z-axis), adjusts the height of the tooling, and makes it accurately dock with the disassembly and assembly part of the landing gear.

[0066] At the same time, the clamping assembly 46 clamps the tail of the landing gear. Through the adjustment of the fourth lead screw 45, the landing gear is tilted to reduce the overall height, facilitating the disassembly and assembly operations in a low space.

[0067] During the disassembly and assembly process, if it is necessary to adjust the position or angle of the equipment, the operator can operate the first driving device, the second driving device or the adjustment mechanism of the support frame 4 at any time for flexible adjustment.

[0068] Equipment folding and fixing:

[0069] When the disassembly and assembly work of the landing gear is completed and the lifting device 5 needs to be rotated to the horizontal state for storage or transportation, the operator rotates the lifting device 5.

[0070] When the lifting device 5 rotates to a height lower than that of the armrest 12, it starts to press down the rack 32. The movement of the rack 32 drives the gear 34 to rotate. The gear 34 rotates the armrest 12 counterclockwise through the rotating shaft 33. After the lifting device 5 continues to rotate to the horizontal state, the armrest 12 automatically folds and presses above the lifting device 5 to limit the lifting device 5.

[0071] During the downward movement of the rack 32, the bottom of the rack 32 contacts the guide surface 42 on the plug block 41, squeezing the plug block 41 to retract it into the through groove. When the rack 32 continues to move downward until the slot 38 is aligned with the plug block 41, the plug block 41 is automatically pressed into the slot 38 under the elastic force of the second spring 37 to achieve self-locking, further fixing the armrest 12 and the lifting device 5.

[0072] Equipment restoration and traction:

[0073] When it is necessary to restore the lifting device 5 to the vertical state for the next disassembly and assembly work, the operator pulls the moving rod 36 outwards to move the insertion block 41 out of the slot 38 to release the limit. Then manually rotate the lifting device 5 to the vertical state, and the armrest 12 will return to its original position accordingly.

[0074] If it is necessary to tow the equipment to other positions, the towing vehicle can be connected through the towing rod 7 for towing and transportation within the airport area. During the towing process, the towing rod 7 can be swung left and right as needed to drive the front wheels 8 and the rear wheels 8 to turn. When the towing rod 7 is lowered, the brake disc on the rear wheel 8 acts to achieve braking, ensuring the stability and safety of the equipment during towing.

[0075] The circuits, electronic components and modules involved are all prior arts and can be fully realized by those skilled in the art without further elaboration. The content protected by the present invention does not involve the improvement of software and methods either.

[0076] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0077] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An aircraft landing gear disassembly and assembly device, characterized in that, It includes a vehicle frame (1). Inside the vehicle frame (1), there is a moving frame (43), and the moving frame (43) is driven by a first driving device to move along the width direction of the vehicle frame (1). A moving plate (2) is provided on the vehicle frame (1), and the moving plate (2) is driven by a second driving device to move along the length direction of the vehicle frame (1). An arc-shaped guide rail (3) is provided on the moving plate (2). A support frame (4) slidably connected to the arc-shaped guide rail (3) is provided on the arc-shaped guide rail (3). A lifting device (5) and a fixing device (11) are provided on the support frame (4). The lifting device (5) is hinged to the support frame (4) and can be rotated to a vertical state. The fixing device (11) is used to fix the lifting device (5) in the vertical state. A fixture (6) is provided at the top of the lifting device (5), and the fixture (6) is used to fix a tooling, and the tooling is used to clamp the landing gear. An armrest (12) is provided on one side of the support frame (4). The armrest (12) is rotatably connected to the support frame (4) through a rotating shaft (33). The rotating shaft (33) is horizontally arranged. A gear (34) is fixedly sleeved on the rotating shaft (33). A support platform (31) for supporting the lifting device (5) is further provided on the support frame (4). A chute (40) is provided through the support platform (31). A rack (32) meshing with the gear (34) is slidably connected inside the chute (40). The rack (32) is vertically arranged, and the gear (34) is connected to the support platform (31) through a first spring (35). A through groove communicating with the chute (40) is provided through the support platform (31). The through groove is perpendicular to the chute (40). A moving rod (36) is slidably connected inside the through groove. One end of the moving rod (36) is provided with a plug (41), and the other end of the moving rod (36) extends outside the through groove. The rack (32) is provided with a plug (41) inserted and matched with the plug (41). A guiding surface (42) is provided at the top of the plug (41). The guiding surface (42) is inclined. The moving rod (36) is connected to the support platform (31) through a second spring (37).

2. The aircraft landing gear disassembly and assembly device according to claim 1, characterized in that, The first driving device includes a first lead screw (13). The first lead screw (13) is rotatably connected to the vehicle frame (1), and the first lead screw (13) is arranged along the width direction of the vehicle frame (1). The first lead screw (13) is threadedly connected to the moving frame (43). A first guiding wheel is rotatably connected to the moving frame (43). A first guiding groove (16) is provided on the vehicle frame (1). The first guiding groove (16) is arranged along the width direction of the vehicle frame (1). The first guiding wheel is slidably embedded in the first guiding groove (16).

3. The aircraft landing gear disassembly and assembly device according to claim 1, characterized in that, The second driving device includes a second lead screw (14). The second lead screw (14) is arranged along the length direction of the vehicle frame (1). The second lead screw (14) is rotatably connected to the moving frame (43), and the second lead screw (14) is threadedly connected to the moving plate (2). A second guide wheel is rotatably connected to the moving plate (2). A second guide groove (17) is provided on the moving frame (43). The second guide groove (17) is arranged along the length direction of the vehicle frame (1). The second guide wheel is slidably embedded in the second guide groove (17).

4. The aircraft landing gear disassembly and assembly device according to claim 1, wherein, A plurality of first fixing teeth (20) are provided on the side wall of the arc-shaped guide rail (3). The plurality of first fixing teeth (20) are arranged at intervals along the circumferential direction of the arc-shaped guide rail (3). A slot (38) is formed between two adjacent first fixing teeth (20). A telescopic rod (23) is fixedly connected to the support frame (4). A fixing plate (21) is provided at the output end of the telescopic rod (23). A plurality of second fixing teeth (22) are provided at one end of the fixing plate (21). The plurality of second fixing teeth (22) face the first fixing teeth (20). The second fixing teeth (22) can be inserted into the slot (38) to fix the support frame (4).

5. The aircraft landing gear disassembly and assembly device according to claim 1, wherein, The lifting device (5) includes an outer cylinder (24) and a third lead screw (25). The outer cylinder (24) is hinged to the support frame (4). The third lead screw (25) is threadedly connected to the inside of the outer cylinder (24). The clamp (6) is provided at the top of the third lead screw (25).

6. The aircraft landing gear disassembly and assembly device according to claim 5, characterized in that, The fixing device (11) includes a pull rod assembly. The pull rod assembly includes a quick-release pin (30), an upper pull rod (29), an adjusting rod (28), and a lower pull rod (27) that are sequentially connected at the ends. The quick-release pin (30) is hinged and detachable from the outer cylinder (24). Both the upper pull rod (29) and the lower pull rod (27) are threadedly connected to the adjusting rod (28). The thread of the upper pull rod (29) is left-handed, and the thread of the lower pull rod (27) is right-handed. The end of the lower pull rod (27) away from the adjusting rod (28) is hinged to the support frame (4).

7. The aircraft landing gear disassembly and assembly device according to claim 1, characterized in that, A column (10) is further provided on the support frame (4). The column (10) is located on one side of the lifting device (5). A moving seat (44) that is slidably connected to the column (10) is provided on the column (10). The moving seat (44) is fixed to the column (10) through a fixing component. A fourth lead screw (45) is threadedly connected to the moving seat (44). A clamping component (46) for clamping the tail of the landing gear is provided on the fourth lead screw (45).

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