An aircraft ground assembly support platform having leveling and wind stable structure

Abstract

This invention relates to an aircraft ground assembly support platform with a leveling and wind-resistant stability structure, belonging to the field of mobile lifting assembly platform technology. It aims to solve the technical problems of existing aircraft assembly support platforms, such as inconvenient leveling, weak wind resistance, and difficulty in positioning and relocation. The platform includes a maintenance platform frame, omnidirectional wheels, a trailer connecting bracket, diagonally arranged electrically driven steering wheels, four-corner leveling support components, lateral extension brackets, a hydraulic drive component, and a mechanical limiting component. The leveling support components and the lateral extension brackets work together to form a triangular wind-resistant support structure. The mechanical limiting component achieves mechanical self-locking of the lifting column I. The hydraulic drive component synchronously drives the leveling and steering wheel lifting. The trailer connecting bracket and the mechanical limiting component work together to adapt to relocation requirements. This invention can achieve precise platform leveling and micro-positioning, significantly improve outdoor wind resistance and overturning capability, facilitates relocation, and provides stable and reliable support, making it suitable for outdoor operations such as aircraft ground assembly and maintenance.

Description

Technical Field

[0001] This invention belongs to the technical field of mobile lifting assembly platforms, and relates to an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure. Background Technology

[0002] When aircraft are being assembled, docked with doors, or inspected on the ground, a dedicated support platform is needed to provide a stable working platform for the operators, assembly tools and parts. This type of equipment must meet multiple requirements such as mobile transfer, altitude adjustment, leveling, outdoor wind resistance and precise docking, in order to adapt to the complex ground conditions of the airport and the assembly needs of different aircraft models.

[0003] The aircraft ground support platforms currently used in aviation manufacturing and maintenance scenarios mostly adopt traditional fixed steel frame structures or simple mobile lifting platforms. Their structural design and functional configuration have obvious technical limitations. Ordinary mobile platforms are only equipped with basic omnidirectional wheels, which can only achieve short-distance rough movement within the site and cannot complete the micro-precision positioning and adjustment between the platform and the aircraft door. The labor intensity of manual alignment is high and the docking accuracy is difficult to guarantee.

[0004] Aircraft assembly operations are mostly carried out in outdoor airport environments, where natural wind loads will continuously impact the platform structure. However, existing platforms generally do not have dedicated wind-resistant stabilization mechanisms and rely solely on their own weight and bottom outriggers for support, resulting in weak overturning resistance. In windy weather, the platform is prone to swaying, displacement, or even tipping over, failing to meet the stability requirements for routine outdoor operations.

[0005] In addition, the existing platform's short-distance movement and long-distance relocation functions are disconnected, and the trailer connection structure and support legs lack a linkage and locking design. During relocation and transportation, problems such as the support legs not being retracted and the trailer hangers getting stuck are prone to occur. This not only results in low relocation efficiency but also easily causes collision damage between the support structure and the ground.

[0006] Therefore, we propose an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure to solve the problems mentioned above. Summary of the Invention

[0007] In view of this, in order to solve the above problems, the present invention provides an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure, comprising:

[0009] The maintenance platform frame is equipped with a winch drive device fixed on its top, a lifting cargo elevator that can be raised and lowered inside the maintenance platform frame, and a docking connection platform and a safety ladder.

[0010] Four omnidirectional casters are fixed to the four corners of the bottom of the maintenance platform frame with bolts, which are used to enable short-distance movement of the platform;

[0011] The trailer connection bracket is rotatably connected to one side of the maintenance platform frame via the mounting bracket, and can be connected to an external trailer to achieve long-distance relocation of the platform;

[0012] Two electrically driven steering wheels are diagonally and liftably mounted on both sides of the maintenance platform frame to drive the maintenance platform frame to move slightly to precisely connect with the aircraft.

[0013] Four leveling support components can be installed at the four corners of the maintenance platform frame, and after being lowered, they contact the ground to limit and level the maintenance platform frame.

[0014] Two sets of hydraulic drive components are installed on both sides of the maintenance platform frame to drive the leveling support components and the electric drive steering wheel for lifting.

[0015] As a further improvement to the above technical solution:

[0016] The leveling support assembly includes a sleeve rod I, a lifting column I, and a hydraulic cylinder I. The sleeve rod I is fixed to the outside of the maintenance platform frame, the lifting column I is slidably fitted inside the sleeve rod I, and the hydraulic cylinder I is fixed to the top of the sleeve rod I. Its output end is fixedly connected to the lifting column I. By extending and retracting the hydraulic cylinder I, the lifting column I is raised and lowered, thereby achieving precise leveling of the maintenance platform frame.

[0017] The electrically driven steering wheel includes a steering wheel mounting frame, a lifting column II, a slewing support base, a drive wheel, a geared motor I, a geared motor II, and a hydraulic cylinder II. The steering wheel mounting frame is fixed to the outside of the maintenance platform frame. The lifting column II is slidably fitted inside the steering wheel mounting frame. The guide roller is rotatably mounted on the top of the lifting column II and fits against the steering wheel mounting frame. The slewing support base is rotatably mounted on the bottom of the lifting column II. The drive wheel is rotatably mounted on the bottom of the slewing support base. The geared motor I is fixed to one side of the lifting column II and is connected to the slewing support base via a synchronous pulley and synchronous belt. The geared motor II is fixed to one side of the slewing support base and its output end is fixedly connected to the drive wheel shaft. The hydraulic cylinder II is fixed to the top wall of the steering wheel mounting frame and its output end is fixedly connected to the lifting column II. The platform's micro-positioning is achieved through the cooperation of the geared motors I and II.

[0018] It also includes two sets of lateral extension supports, which are installed on both sides of the maintenance platform frame and work in conjunction with the leveling support assembly. The lateral extension supports include a telescopic sleeve rod, a sliding support rod, a pin I, and a transition rod. The telescopic sleeve rod is rotatably connected to the outside of the maintenance platform frame, and the sliding support rod is slidably fitted inside the telescopic sleeve rod. The pin I is inserted into one side of the telescopic sleeve rod and the sliding support rod for limiting the position. The two ends of the transition rod are rotatably connected to the bottom ends of the lifting column I and the sliding support rod, respectively. When the lifting column I rises and falls, it drives the sliding support rod to extend and retract, forming a triangular support structure to improve the platform's wind resistance and overturning ability.

[0019] The bottom ends of the sliding support rod and the lifting column I are both rotatably mounted with support feet via a pivot. The bottom surface of the support feet is provided with anti-slip teeth to increase the friction with the ground. The two support feet at the bottom of the sliding support rod on the same side are fixedly connected to the same connecting plate to increase the ground contact area and distribute the support pressure.

[0020] The hydraulic cylinders I and II have the same structure, each including a cylinder body I, a piston rod I, a piston rod I, and a spring I. The piston rod I is slidably fitted inside the cylinder body I. The piston rod I slides through the bottom of the cylinder body I and its top end is fixedly connected to the piston rod I. The spring I is sleeved on the outer wall of the piston rod I, with its two ends abutting against the bottom of the piston rod I and the bottom wall of the cylinder body I, respectively.

[0021] The hydraulic drive assembly includes cylinder III, a connecting cylinder, and a drive motor I. Cylinder III is fixed inside the steering wheel mounting bracket, the connecting cylinder is fixed to one side of cylinder III, and drive motor I is fixed to the outer end of the connecting cylinder. Cylinder III is connected to cylinders I and II on the same side through a pipe. The hydraulic oil in cylinder III is driven by drive motor I to flow, so as to realize synchronous or independent extension and retraction of cylinders I and II.

[0022] The hydraulic cylinder III includes a cylinder body II, a piston rod II, and a piston column II. The piston rod II extends through one side of the cylinder body II, and the piston column II is located inside the cylinder body II and is fixedly connected to one end of the piston rod II. The other end of the piston rod II is fixedly connected to the output end of the drive motor I. A connecting sleeve is threaded onto the middle of the piston rod II. The drive motor I drives the piston rod II to rotate and moves axially in coordination with the connecting sleeve, thereby pushing the hydraulic oil inside the cylinder body II to flow and provide power.

[0023] It also includes a mechanical limiting assembly, located on the outside of the sleeve rod I and used in conjunction with the adapter rod. The mechanical limiting assembly includes a sliding rod I, a spring II, a pin II, and a connecting strip I. The sliding rod I slides through one side of the maintenance platform frame, the connecting strip I is fixed to one end of the sliding rod I, and the pin II is fixed to the other end of the connecting strip I. Both the sleeve rod I and the lifting column I have insertion holes on one side that are compatible with the pin II. The spring II is sleeved on the outer wall of the sliding rod I and its two ends abut against the connecting strip I and the maintenance platform frame, respectively. When the support foot plate at the bottom of the lifting column I is flush with the drive wheel, the adapter rod flips to abut against the connecting strip I, and the drive pin II is inserted into the insertion hole to fix the lifting column I and prevent it from descending.

[0024] The mounting bracket has a positioning insertion hole on one side, and a pin III is inserted into the positioning insertion hole. The pin III and the sliding rod I are fixedly connected to the same connecting strip II on one side. When the pin II is inserted into the insertion hole to limit the lifting column I, the connecting strip II drives the pin III to exit the positioning insertion hole, thereby releasing the limit on the trailer mounting bracket and preventing the support foot plate from contacting the ground and causing damage during towing.

[0025] The beneficial effects of this invention are as follows:

[0026] 1. The aircraft ground assembly support platform disclosed in this invention has a leveling and wind-resistant stabilization structure. Through four independently set leveling support components, the lifting height can be adjusted separately to achieve precise leveling of the maintenance platform frame, avoid platform tilting due to uneven ground, ensure precise fit between the docking connection surface and the aircraft door, provide a stable working benchmark for aircraft assembly operations, and effectively improve assembly accuracy; the support feet at the bottom of the leveling support components adopt ball joint connection, which can adapt to different ground tilt angles, and increase the contact area with the connecting plate to distribute the support pressure and prevent sinking on soft ground;

[0027] 2. The aircraft ground assembly support platform disclosed in this invention has a leveling and wind-resistant stabilizing structure. The lateral extension bracket and the leveling support assembly work together in a coordinated manner. When the lifting column descends, it can drive the sliding support rod to extend, forming a stable triangular support structure. The stability of the triangle significantly improves the platform's wind-resistant overturning ability. The anti-slip serrations on the bottom surface of the support foot plate can increase the friction with the ground and reduce platform slippage caused by strong winds.

[0028] 3. The aircraft ground assembly support platform disclosed in this invention has a leveling and wind-resistant stabilization structure. Two diagonally arranged electric drive steering wheels can realize the platform's micro-translation and steering adjustment. Combined with the short-distance movement function of the omnidirectional wheels, the platform can be quickly adjusted to the optimal docking position with the aircraft without the need for manual effort to push and adjust, greatly shortening the positioning time. The guide roller design of the electric drive steering wheels can reduce lifting friction and ensure a smooth adjustment process. The drive method of the geared motor can achieve precise speed control, further improving the positioning accuracy. It solves the problems of cumbersome positioning, low accuracy, and long time consumption of existing platforms, effectively improving the efficiency of aircraft assembly operations.

[0029] 4. The aircraft ground assembly support platform disclosed in this invention has a leveling and wind-resistant stabilization structure. The omnidirectional wheels enable the platform to move flexibly over short distances, facilitating position adjustments at the work site. The trailer connecting bracket can be quickly connected to an external trailer, enabling long-distance relocation and transportation of the platform. At the same time, the linkage design between the mechanical limiting components and the trailer connecting bracket can automatically release the trailer bracket during leveling and automatically lock it during relocation, preventing damage to the support structure from collisions with the ground during relocation. This solves the problems of inconvenient relocation and difficult long-distance transportation of existing platforms, improving the platform's versatility and flexibility.

[0030] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0031] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0032] Figure 1 This is a three-dimensional structural diagram of an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure according to the present invention.

[0033] Figure 2 This is a partial structural schematic diagram of an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure according to the present invention.

[0034] Figure 3 This is a schematic diagram of the lateral extension support structure of an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure according to the present invention.

[0035] Figure 4 This is a schematic diagram of an electrically driven steering wheel structure for an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure according to the present invention.

[0036] Figure 5 This is a cross-sectional view of the steering wheel mounting frame of an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure according to the present invention.

[0037] Figure 6 This is a cross-sectional structural diagram of cylinders I and II of an aircraft ground assembly support platform with a leveling and wind-resistant stabilizing structure according to the present invention.

[0038] Figure 7 This is a cross-sectional structural diagram of cylinder III of an aircraft ground assembly support platform with a leveling and wind-resistant stabilizing structure according to the present invention.

[0039] Figure 8 for Figure 2 Enlarged structural diagram of section A in the middle;

[0040] Figure 9 for Figure 2 Enlarged structural diagram of section B.

[0041] Attached reference numerals: 1. Maintenance platform frame; 2. Lifting elevator; 3. Winch drive unit; 4. Safety ladder; 5. Connecting platform; 6. Universal casters; 7. Leveling support assembly; 71. Sleeve rod I; 72. Lifting column I; 73. Hydraulic cylinder I; 74. Support foot plate; 8. Electric drive steering wheel; 81. Steering wheel mounting bracket; 82. Lifting column II; 83. Guide roller; 84. Rotary support seat; 85. Gear motor I; 86. Drive wheel; 87. Gear motor II; 88. Hydraulic cylinder II; 9. Trailer connecting bracket; 91. Mounting bracket; 92. Positioning insertion hole; 10. Lateral Extension bracket; 101. Telescopic sleeve rod; 103. Sliding support rod; 105. Pin I; 104. Adapter rod; 106. Connecting plate; 11. Hydraulic drive assembly; 111. Cylinder III; 112. Drive motor I; 113. Adapter connecting cylinder; 12. Cylinder body I; 13. Piston rod I; 14. Piston column I; 15. Spring I; 16. Cylinder body II; 17. Piston rod II; 18. Piston column II; 19. Mechanical limit assembly; 191. Sliding rod I; 192. Spring II; 193. Pin II; 194. Connecting strip I; 195. Connecting strip II; 196. Pin III. Detailed Implementation

[0042] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0044] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0045] Example 1

[0046] like Figures 1-5 As shown, an aircraft ground assembly support platform with a leveling and wind-resistant stabilizing structure is presented. The main load-bearing structure is a maintenance platform frame 1, which is welded from rectangular steel pipes. This frame serves as the installation foundation for the entire support platform, and all components are directly or indirectly installed on it, ensuring the integrity and load-bearing stability of the entire structure. A winch drive device 3 is fixedly installed on the top of the maintenance platform frame 1. The winch drive device 3 contains a winch, and the winch drum is connected to a traction cable. One end of the traction cable is wound around the winch drum, and the other end passes through a guide pulley at the top of the maintenance platform frame 1. A hook at the bottom of the cable is fixedly engaged with a lifting platform 2. The hook has a self-locking structure, automatically locking after engagement to prevent the lifting platform 2 from falling off. The lifting platform 2 moves vertically along a guide rail on the inner side of the maintenance platform frame 1. The guide rail is welded and fixed to the maintenance platform frame 1, and a slider is installed on the rail. The slider is fixedly connected to the lifting platform 2, reducing frictional resistance during lifting and ensuring smooth movement. The winch drive unit 3 drives the winch drum to rotate via an internal motor, thereby raising and lowering the steel cable and driving the lifting platform 2 within the maintenance platform frame 1. This enables the vertical transport of assembly parts and personnel, meeting the assembly operation requirements at different heights. A docking platform 5 is installed at the front end of the maintenance platform frame 1. The docking platform 5 is welded and fixed to the maintenance platform frame 1. The end face of the docking platform 5 is edged with flexible rubber. The flexible rubber has a certain elasticity, allowing for a smooth docking with the aircraft door, preventing scratches on the door surface and filling gaps to improve sealing and stability. A safety ladder 4 is fixedly installed on one side of the maintenance platform frame 1. The steps of the safety ladder 4 are welded and fixed to the ladder support. The step surface is textured with anti-slip material to increase friction between the worker's feet and the steps, preventing slippage when climbing up and down the platform and ensuring worker safety. Workers can easily access the maintenance platform frame 1 via the safety ladder 4 to carry out assembly operations.

[0047] Universal casters 6 are fixedly installed at the four corners of the bottom of the maintenance platform frame 1. The universal casters 6 are bolted to the bottom bracket of the maintenance platform frame 1. The universal casters 6 have a braking function, with internal brake pads. The brake pedal and brake pads are linked; when the brake pedal is depressed, the brake pads and wheel body are tightly engaged, locking the universal casters 6 and preventing the support platform from moving during operation. When the brake pedal is released, the brake pads separate from the wheel body, allowing the universal casters 6 to rotate freely, enabling short-distance turning of the support platform and facilitating position adjustment on the work site. A trailer connection bracket 9 is rotatably connected to one side of the maintenance platform frame 1 via a mounting bracket 91. The mounting bracket 91 is welded to the maintenance platform frame 1. A rotating shaft is installed on the mounting bracket 91, and the trailer connection bracket 9 is connected to the rotating shaft via bearings. This allows for flexible rotation around the rotating shaft of the mounting bracket 91 to adjust the angle and adapt to different trailer towing head connection angles. The trailer connecting bracket 9 has connection holes, which can be fixedly connected to the towing head of an external trailer by bolts, so as to complete the long-distance relocation and transportation of the support platform and solve the problem that short-distance movement cannot meet the needs of long-distance operation.

[0048] Two electrically driven steering wheels 8 are installed at opposite corners on both sides of the maintenance platform frame 1. The two electrically driven steering wheels 8 are symmetrically distributed to ensure even force distribution on the support platform. The electrically driven steering wheels 8 can move vertically up and down. Driven by the electrically driven steering wheels 8, the maintenance platform frame 1 can be adjusted for slight translation and steering, precisely adjusting the docking position between the support platform and the aircraft, ensuring the accuracy of assembly operations. The steering wheel mounting frame 81 of the electrically driven steering wheels 8 is welded and fixed to the outer wall of the maintenance platform frame 1. The steering wheel mounting frame 81 is a hollow frame structure with a sliding lifting column II 82 inside. Multiple guide rollers 83 are rotatably mounted on the top of the lifting column II 82. The guide rollers 83 are connected to the lifting column II 82 through bearings and can rotate freely. The wheel surfaces of the guide rollers 83 roll in close contact with the inner wall of the steering wheel mounting frame 81, reducing frictional resistance during the lifting of the lifting column II 82 and guiding the lifting direction of the lifting column II 82 to prevent deviation. A slewing support 84 is rotatably mounted on the bottom of the lifting column II 82. The slewing support 84 is connected to the lifting column II 82 via a thrust bearing, allowing for 360-degree horizontal rotation to adjust the steering of the drive wheels 86. The drive wheels 86 are also rotatably mounted on the bottom of the slewing support 84, connected to it via bearings and allowing free rotation. A geared motor I 85 is fixedly mounted on one side of the lifting column II 82, bolted to it. A synchronous pulley is fixedly mounted on the output shaft of the geared motor I 85, and another synchronous pulley is fixedly mounted on the top of the slewing support 84. A synchronous belt is fitted between the two pulleys. When the geared motor I 85 operates, its output shaft drives the synchronous pulleys to rotate, transmitting power through the synchronous belt to rotate the slewing support 84, thus adjusting the steering of the drive wheels 86. A geared motor II 87 is fixedly installed on one side of the slewing support base 84. The geared motor II 87 is fixedly connected to the slewing support base 84 by bolts. The output shaft of the geared motor II 87 is fixedly connected to the rotating shaft of the drive wheel 86 by a coupling. When the geared motor II 87 is running, the output shaft directly drives the drive wheel 86 to rotate, providing power for the slight movement of the support platform. A hydraulic cylinder II 88 is fixedly installed on the top wall of the steering wheel mounting frame 81. The hydraulic cylinder II 88 is fixed to the top mounting plate of the steering wheel mounting frame 81 by bolts. The output end of the hydraulic cylinder II 88 is connected to the top of the lifting column II 82 by a flange to ensure a firm connection. The extension and retraction movement of the hydraulic cylinder II 88 can directly drive the lifting column II 82 to rise and fall inside the steering wheel mounting frame 81, realizing the ground support and lifting and storage of the electric drive steering wheel 8. During operation, the electric drive steering wheel 8 is on the ground for fine-tuning of its position; after relocation or completion of operation, the electric drive steering wheel 8 is raised to avoid damage from friction with the ground.

[0049] A leveling support assembly 7 is installed at each of the four corners of the maintenance platform frame 1. The four leveling support assemblies 7 work together to achieve horizontal adjustment and stable support of the maintenance platform frame 1. The sleeve rod I 71 of the leveling support assembly 7 is welded and fixed to the outer wall of the maintenance platform frame 1. The sleeve rod I 71 is a hollow rectangular sleeve structure. A lifting column I 72 is slidably installed inside the sleeve rod I 71. The outer wall of the lifting column I 72 fits against the inner wall of the sleeve rod I 71 and can slide vertically along the sleeve rod I 71. A guide groove is provided on the inner side of the sleeve rod I 71. A guide block adapted to the guide groove is provided on the lifting column I 72. The guide block is embedded in the guide groove to prevent the lifting column I 72 from rotating or deviating when sliding. A hydraulic cylinder I73 is fixedly installed on the top of the sleeve rod I71. The hydraulic cylinder I73 is fixed to the mounting plate on the top of the sleeve rod I71 by bolts. The output end of the hydraulic cylinder I73 is connected to the top of the lifting column I72 by bolts. When the hydraulic cylinder I73 extends or retracts, it can drive the lifting column I72 to move vertically up and down along the sleeve rod I71. When the lifting column I72 descends to the bottom, its bottom support foot plate 74 contacts the ground, realizing the support limit of the maintenance platform frame 1. By adjusting the lifting height of the four leveling support components 7, the maintenance platform frame 1 can be kept in a horizontal state to meet the levelness requirements of aircraft assembly operations. Dustproof sealing sleeves are fitted on the open ends of the sleeve rod I71 and the steering wheel mounting bracket 81. The dustproof sealing sleeves cover the outer walls of the lifting column I72 and the lifting column II82 to prevent dust and sand from entering.

[0050] A set of lateral extension brackets 10 is installed on each side of the maintenance platform frame 1. The lateral extension brackets 10 work in conjunction with the leveling support assembly 7 to increase the contact area between the support platform and the ground, improve the support platform's resistance to wind overturning, and adapt to outdoor high-wind working environments. The two telescopic sleeves 101 of the lateral extension brackets 10 are rotatably connected to the outer wall of the maintenance platform frame 1. The telescopic sleeves 101 are connected to the maintenance platform frame 1 via pins and can rotate around the pins to achieve unfolding and retraction. The telescopic sleeves 101 have a hollow sleeve structure with a sliding support rod 103 slidably installed inside. The sliding support rod 103 can slide horizontally along the telescopic sleeves 101 to adjust the length of the lateral extension. A through hole is opened on the same side of the telescopic sleeve rod 101 and the sliding support rod 103. The same pin I 105 is inserted into the through hole. The pin I 105 can limit the extension and retraction stroke of the sliding support rod 103 and prevent the sliding support rod 103 from coming out of the telescopic sleeve rod 101. When the length needs to be adjusted, the pin I 105 is pulled out, the sliding support rod 103 is slid to the appropriate position, and then the pin I 105 is inserted to fix it. A transition rod 104 is rotatably installed on one side of the lifting column I 72. One end of the transition rod 104 is connected to the lifting column I 72 via a pin, and the other end is connected to the bottom end of the sliding support rod 103 via a pin. When the lifting column I 72 is raised or lowered, the transition rod 104 will drive the sliding support rod 103 to slide within the telescopic sleeve rod 101, so that a stable triangular support structure is formed between the telescopic sleeve rod 101, the sliding support rod 103 and the transition rod 104. By utilizing the stability of the triangle, the overturning resistance of the support platform in a strong wind environment can be effectively improved, and the support platform can be prevented from being blown away or overturned by the wind.

[0051] Support feet 74 are rotatably mounted on the bottom ends of both the sliding support rod 103 and the lifting column I 72. The support feet 74 are connected to the sliding support rod 103 and the lifting column I 72 via pivots, adapting to different ground inclination angles and ensuring a tight fit between the support feet 74 and the ground, thus improving support stability. The support feet 74 are made of wear-resistant material with anti-slip serrations on the bottom surface, increasing friction with the ground and preventing slippage. A connecting plate 106 is fixedly connected between the two support feet 74 located at the bottom of the sliding support rod 103 on the same side. The connecting plate 106 is bolted to the two support feet 74, connecting them into one unit. This further increases the contact area between the support feet 74 and the ground, distributing support pressure, preventing subsidence on soft ground, and ensuring the stability of the support platform.

[0052] Example 2

[0053] Reference Figures 1-9This invention provides a novel technical solution: an aircraft ground assembly support platform with a leveling and wind-resistant stabilization structure. Cylinders I73 and II88 employ the same internal structure, both using cylinder body I12 as the main outer shell. Cylinder body I12 is a sealed hollow cavity used to contain hydraulic oil. A piston rod I14 is slidably mounted inside cylinder body I12. A sealing ring is installed between the outer wall of piston rod I14 and the inner wall of cylinder body I12 to prevent hydraulic oil leakage and ensure normal operation of the cylinders. A through hole is formed at the bottom end of cylinder body I12, and a piston rod I13 is slidably mounted within the through hole. The top end of piston rod I13 is welded and fixed to the bottom of piston rod I14, allowing piston rod I14 to move vertically synchronously. A spring I15 is fitted on the outer wall of piston rod I13. The two ends of spring I15 abut against the bottom of piston column I14 and the bottom wall of cylinder I12, respectively. Spring I15 has an elastic restoring function, which can play a buffering role during the extension and retraction of the oil cylinder, reduce the damage of hydraulic shock to the oil cylinder structure, extend the service life of the oil cylinder, and make the extension and retraction of the oil cylinder more stable.

[0054] A set of hydraulic drive components 11 is installed on each side of the maintenance platform frame 1. The hydraulic drive components 11 provide hydraulic power for the lifting and lowering of the leveling support component 7 and the electric drive steering wheel 8, realizing synchronous or independent control of the leveling support component 7 and the electric drive steering wheel 8. The hydraulic cylinder III 111 of the hydraulic drive component 11 is fixedly installed inside the steering wheel mounting frame 81. The hydraulic cylinder III 111 is fixedly connected to the steering wheel mounting frame 81 by bolts. The adapter connecting cylinder 113 is fixedly installed on one side of the hydraulic cylinder III 111. The adapter connecting cylinder 113 is fixed to the hydraulic cylinder III 111 by bolts. The drive motor I 112 is fixedly installed on the outer end of the adapter connecting cylinder 113. The drive motor I 112 is fixedly connected to the adapter connecting cylinder 113 by bolts. The hydraulic cylinder III 111 is connected to the hydraulic cylinder I 73 and hydraulic cylinder II 88 on the same side through hydraulic pipes. A control valve is installed on the hydraulic pipes to control the flow direction and flow rate of the hydraulic oil, realizing independent or synchronous drive of the hydraulic cylinder I 73 and hydraulic cylinder II 88. The cylinder body II16 of hydraulic cylinder III111 is a sealed cavity structure. A through hole is opened on one side of cylinder body II16, and a piston rod II17 is installed in the through hole. A piston column II18 is installed inside cylinder body II16. One end of piston rod II17 is welded and fixed to piston column II18, and the other end passes through adapter sleeve 113 and is fixedly connected to the output shaft of drive motor I112 through a coupling. The adapter sleeve 113 has internal threads, and the middle part of piston rod II17 has external threads. The adapter sleeve 113 is threadedly fitted into the middle part of piston rod II17, forming a threaded transmission structure. When the drive motor I112 is running, the output shaft drives the piston rod II17 to rotate. Under the threaded engagement of the adapter connecting cylinder 113, the piston rod II17 moves axially, thereby driving the piston column II18 to slide inside the cylinder body II16. When the piston column II18 slides, it pushes the hydraulic oil inside the cylinder body II16 to flow into the cylinder I73 and cylinder II88 through the hydraulic pipeline, pushing the cylinder I73 and cylinder II88 to extend and retract, thereby realizing the raising and lowering of the leveling support assembly 7 and the electric drive steering wheel 8.

[0055] A mechanical limiting component 19 is installed on the outer side of the sleeve rod I 71. The mechanical limiting component 19 works in conjunction with the adapter rod 104 to lock the position of the lifting column I 72, preventing the lifting column I 72 from being forgotten to be retracted during traction. The sliding rod I 191 of the mechanical limiting component 19 slides through one side of the maintenance platform frame 1. A sliding hole is opened on the side wall of the maintenance platform frame 1. The sliding rod I 191 passes through the sliding hole and can slide horizontally along the sliding hole. A guide sleeve is installed in the sliding hole. The guide sleeve can reduce the frictional resistance of the sliding rod I 191 during sliding and also guide the sliding rod I 191. A connecting strip I 194 is fixedly installed at one end of the sliding rod I 191. The connecting strip I 194 is welded to the sliding rod I 191. A pin II 193 is fixedly installed at the other end of the connecting strip I 194. The pin II 193 is welded to the connecting strip I 194. The three form a whole and can move synchronously. Both the sleeve rod I71 and the lifting column I72 have insertion holes on the same side that are compatible with the pin II193. When the lifting column I72 descends to the bottom support foot plate 74 and is level with the drive wheel 86, the adapter rod 104 retracts and abuts against the connecting strip I194, pushing the connecting strip I194 and the pin II193 towards the sleeve rod I71, so that the pin II193 is inserted into the insertion holes of the sleeve rod I71 and the lifting column I72 simultaneously, completing the mechanical locking of the lifting column I72 and preventing the lifting column I72 from retracting. When unlocking is required, the adapter rod 104 opens, the spring II192 returns to its original position and pushes the connecting strip I194, causing the pin II193 to exit from the insertion hole, thus releasing the limit on the lifting column I72.

[0056] A positioning insertion hole 92 is provided on one side of the mounting bracket 91. The positioning insertion hole 92 is a through hole, and a pin III 196 is inserted inside. The pin III 196 can be inserted into the positioning insertion hole 92 to restrict the rotation of the trailer connecting bracket 9, ensuring that the trailer connecting bracket 9 remains fixed and does not shake when the support platform moves or operates over short distances. The pin III 196 and the sliding rod I 191 are fixedly connected to the same connecting strip II 195 on the same side. The connecting strip II 195 is welded and fixed to the pin III 196 and the sliding rod I 191 to achieve linkage among the three. When the pin II 193 is inserted into the insertion hole of the sleeve rod I 71 and the lifting column I 72 and completes the limit, the sliding rod I 191 will move towards the sleeve rod I 71. Through the connecting strip II 195, the pin III 196 will be driven to withdraw from the positioning insertion hole 92, releasing the pin III 196 from the trailer connection. With the limit constraint of the bracket 9, the trailer connecting bracket 9 can rotate freely, facilitating connection with external trailers. At the same time, the support foot plate 74 is locked, preventing it from contacting the ground during towing and avoiding damage to the support structure. When the pin II 193 exits the insertion hole and releases the limit on the lifting column I 72, the sliding rod I 191 moves in the opposite direction, driving the pin III 196 to insert into the positioning insertion hole 92 through the connecting strip II 195, locking the trailer connecting bracket 9 and preventing it from rotating arbitrarily.

[0057] This platform is also equipped with an industrial control controller, which is electrically connected to the hoist drive device 3, geared motor I 85, geared motor II 87, and drive motor I 112 respectively. It is used to coordinate the start, stop, operation and extension of each actuator to achieve automatic coordinated operation of leveling, lifting and precise positioning.

[0058] Working principle:

[0059] When a short-distance movement of the support platform is required, release the brake pedal of the omnidirectional wheel 6, push the maintenance platform frame 1, and use the rotation of the omnidirectional wheel 6 to move the support platform to the vicinity of the work area.

[0060] When long-distance relocation is required, first unlock the mechanical limit component 19 to allow pin II 193 to exit the insertion hole and release the limit on lifting column I 72. At the same time, pin III 196 inserts into the positioning insertion hole 92 to lock the trailer connecting bracket 9. Then, drive cylinder I 73 to retract through hydraulic drive component 11, causing lifting column I 72 of leveling support component 7 to rise, so that support foot 74 leaves the ground. At the same time, drive cylinder II 88 to extend, causing lifting column II 82 of electric drive steering wheel 8 to descend, leaving only the universal travel wheel 6 on the ground. Then rotate the trailer connecting bracket 9 to align it with the towing head of the external trailer and fix it with bolts. After the connection is completed, release the limit of pin III 196 on trailer connecting bracket 9, and long-distance relocation can be completed by trailer towing support platform.

[0061] After the relocation is completed, the positioning process begins. First, the support platform is moved to the approximate location for aircraft assembly using the omnidirectional casters 6. The brake pedal of the omnidirectional casters 6 is depressed to lock them and prevent the platform from moving. Then, the hydraulic drive assembly 11 is activated, driving cylinder II 88 to extend and lowering the lifting column II 82, allowing the drive caster 86 of the electric drive steering wheel 8 to land. At the same time, the brake of the omnidirectional casters 6 is released, and the reduction motor II 87 is activated to rotate the drive caster 86, achieving a slight translation of the support platform. Then, the reduction motor I 85 is activated to rotate the slewing support 84, adjusting the steering of the drive caster 86, thereby precisely adjusting the docking position between the maintenance platform frame 1 and the aircraft, aligning the docking connection platform 5 with the aircraft door. After positioning is completed, the electric drive steering wheel 8 is locked.

[0062] After positioning is completed, the leveling and support phase begins. The hydraulic drive assembly 11 is activated, causing the cylinder I 73 on the same side to extend synchronously, which in turn lowers the lifting column I 72 of the leveling and support assembly 7. During the descent of the lifting column I 72, the sliding support rod 103 of the lateral extension bracket 10 extends from the telescopic sleeve 101 via the adapter rod 104, forming a triangular support structure with the telescopic sleeve 101, the sliding support rod 103, and the adapter rod 104. Simultaneously, the sliding support rod 103 and the support foot plate 74 at the bottom of the lifting column I 72 gradually... As the lifting column I72 continues to descend, it gradually contacts the ground, and the support foot plate 74 closely adheres to the ground, providing support for the maintenance platform frame 1. By adjusting the extension and retraction of the hydraulic cylinders I73 of the four leveling support components 7, the height of the four lifting columns I72 is adjusted to keep the maintenance platform frame 1 horizontal. After adjustment, the sliding support rod 103 and the telescopic sleeve rod 101 are limited by the pin I105. At this time, the support platform forms a stable support structure with wind resistance and overturning ability, which can cope with outdoor windy working environments.

[0063] After the leveling and support are completed, the operation begins. The operator climbs onto the maintenance platform frame 1 via the safety ladder 4, starts the winch drive device 3, and drives the lifting cargo elevator 2 to rise and fall through the steel cable, transporting the parts required for assembly to the working height. The operator can then carry out aircraft assembly work on the maintenance platform frame 1. The docking and connecting platform 5 fits tightly with the aircraft door, allowing the operator to move back and forth between the platform and the aircraft for convenient assembly operations. The triangular support structure of the lateral extension bracket 10 remains extended to ensure the stability of the support platform and prevent the platform from shaking due to strong winds or operational vibrations, thus ensuring operational safety.

[0064] After the work is completed, the storage phase begins. First, the lifting platform 2 is lowered to its lowest position via the winch drive device 3, and the workers leave the maintenance platform frame 1 via the safety ladder 4.

[0065] However, as is well known to those skilled in the art, the working principles and wiring methods of the hoist drive device 3, geared motor I 85, geared motor II 87 and drive motor I 112 are all conventional methods or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An aircraft ground assembly support platform with a leveling and wind-resistant stabilizing structure, comprising a maintenance platform frame (1), wherein a winch drive device (3) is fixedly provided on the top of the maintenance platform frame (1), and a lifting cargo ladder (2) is provided inside the maintenance platform frame (1) for sliding and lifting, and the maintenance platform frame (1) is provided with multiple docking and connecting platforms (5) and safety ladders (4). Its features are, The maintenance platform frame (1) also includes: Four omnidirectional wheels (6) are fixed to the four corners of the bottom of the maintenance platform frame (1) by bolts, which are used to realize short-distance movement of the platform; The trailer connecting bracket (9) is rotatably connected to one side of the maintenance platform frame (1) via the mounting bracket (91), and can be connected to an external trailer to realize long-distance relocation of the platform; Two electrically driven steering wheels (8) are installed diagonally and can be raised and lowered on both sides of the maintenance platform frame (1) to drive the maintenance platform frame (1) to move slightly to precisely dock with the aircraft. Four leveling support components (7) can be raised and lowered and installed at the four corners of the maintenance platform frame (1). After being lowered, they contact the ground to limit and level the maintenance platform frame (1). Two sets of hydraulic drive components (11) are installed on both sides of the maintenance platform frame (1) to drive the leveling support component (7) and the electric drive steering wheel (8) to lift. It also includes a mechanical limiting assembly (19), which is located outside the sleeve rod I (71) and works in conjunction with the adapter rod (104). The mechanical limiting assembly (19) includes a sliding rod I (191), a spring II (192), a pin II (193), and a connecting strip I (194). The sliding rod I (191) slides through one side of the maintenance platform frame (1), the connecting strip I (194) is fixed to one end of the sliding rod I (191), and the pin II (193) is fixed to the other end of the connecting strip I (194). Both rod I (71) and lifting column I (72) have a socket hole on one side that is compatible with pin II (193). Spring II (192) is sleeved on the outer wall of sliding rod I (191) and its two ends abut against connecting strip I (194) and maintenance platform frame (1) respectively. When the support foot plate (74) at the bottom of lifting column I (72) is flush with the drive wheel (86), the adapter rod (104) flips and abuts against connecting strip I (194), and drive pin II (193) is inserted into the socket hole to fix lifting column I (72). The mounting bracket (91) has a positioning insertion hole (92) on one side, and a pin III (196) is inserted into the positioning insertion hole (92). The pin III (196) and the sliding rod I (191) are fixedly connected to the same connecting strip II (195).

2. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 1, characterized in that, The leveling support assembly (7) includes a sleeve rod I (71), a lifting column I (72) and a hydraulic cylinder I (73). The sleeve rod I (71) is fixed to the outside of the maintenance platform frame (1). The lifting column I (72) is slidably fitted inside the sleeve rod I (71). The hydraulic cylinder I (73) is fixed to the top of the sleeve rod I (71), and its output end is fixedly connected to the lifting column I (72). The lifting column I (72) is raised and lowered by the extension and retraction of the hydraulic cylinder I (73).

3. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 2, characterized in that, The electric drive steering wheel (8) includes a steering wheel mounting bracket (81), a lifting column II (82), a slewing support base (84), a drive wheel (86), a geared motor I (85), a geared motor II (87), and a hydraulic cylinder II (88). The steering wheel mounting bracket (81) is fixed to the outside of the maintenance platform frame (1). The lifting column II (82) is slidably fitted inside the steering wheel mounting bracket (81). The guide roller (83) is rotatably mounted on the top of the lifting column II (82) and fits against the steering wheel mounting bracket (81). The slewing support base (84) is... The drive wheel (86) is rotatably mounted on the bottom of the lifting column II (82), the drive wheel (86) is rotatably mounted on the bottom of the slewing support (84), the geared motor I (85) is fixed on one side of the lifting column II (82) and is connected to the slewing support (84) through the synchronous pulley and synchronous belt, the geared motor II (87) is fixed on one side of the slewing support (84) and its output end is fixedly connected to the shaft of the drive wheel (86), and the oil cylinder II (88) is fixed on the top wall of the steering wheel mounting bracket (81) and its output end is fixedly connected to the lifting column II (82).

4. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 2, characterized in that, It also includes two sets of lateral extension brackets (10), which are installed on both sides of the maintenance platform frame (1) and are linked with the leveling support assembly (7). The lateral extension bracket (10) includes a telescopic sleeve rod (101), a sliding support rod (103), a pin I (105) and a transition rod (104). The telescopic sleeve rod (101) is rotatably connected to the outside of the maintenance platform frame (1), and the sliding support rod (103) is slidably fitted inside the telescopic sleeve rod (101). The pin I (105) is inserted into one side of the telescopic sleeve rod (101) and the sliding support rod (103) for limiting. The two ends of the transition rod (104) are rotatably connected to the bottom ends of the lifting column I (72) and the sliding support rod (103) respectively. When the lifting column I (72) is raised or lowered, it drives the sliding support rod (103) to extend or retract.

5. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 4, characterized in that, The bottom ends of the sliding support rod (103) and the lifting column I (72) are both rotatably mounted with support feet (74) via a rotating shaft. The bottom surface of the support feet (74) is provided with anti-slip teeth to increase the friction with the ground. The two support feet (74) at the bottom of the sliding support rod (103) on the same side are fixedly connected by the same connecting plate (106).

6. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 2, characterized in that, The hydraulic cylinders I (73) and II (88) have the same structure, both including cylinder body I (12), piston column I (14), piston rod I (13) and spring I (15). The piston column I (14) is slidably fitted inside the cylinder body I (12). The piston rod I (13) slides through the bottom end of the cylinder body I (12) and its top end is fixedly connected to the piston column I (14). The spring I (15) is sleeved on the outer wall of the piston rod I (13), and its two ends abut against the bottom of the piston column I (14) and the bottom wall of the cylinder body I (12) respectively.

7. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 6, characterized in that, The hydraulic drive assembly (11) includes cylinder III (111), adapter connecting cylinder (113) and drive motor I (112). Cylinder III (111) is fixed inside the steering wheel mounting bracket (81). Adapter connecting cylinder (113) is fixed to one side of cylinder III (111). Drive motor I (112) is fixed to the outer end of adapter connecting cylinder (113). Cylinder III (111) is connected to cylinder I (73) and cylinder II (88) on the same side through a pipe. Drive motor I (112) drives the hydraulic oil in cylinder III (111) to flow, so that cylinder I (73) and cylinder II (88) can extend and retract synchronously or independently.

8. The aircraft ground assembly support platform with leveling and wind-resistant stabilization structure according to claim 7, characterized in that, The cylinder Ⅲ (111) includes cylinder body Ⅱ (16), piston rod Ⅱ (17) and piston column Ⅱ (18). Piston rod Ⅱ (17) is provided through one side of cylinder body Ⅱ (16). Piston column Ⅱ (18) is provided inside cylinder body Ⅱ (16) and is fixedly connected to one end of piston rod Ⅱ (17). The other end of piston rod Ⅱ (17) is fixedly connected to the output end of drive motor Ⅰ (112). The adapter sleeve (113) is threaded on the middle of piston rod Ⅱ (17). Drive motor Ⅰ (112) drives piston rod Ⅱ (17) to rotate and cooperates with adapter sleeve (113) to move axially.

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