Underground electric lifting platform for auxiliary installation of aero-engine

Abstract

The invention provides an underground electric lifting platform for auxiliary installation of an aero-engine, which is applied to the technical field of assembly of the aero-engine, and comprises an underground lifting mechanism, a profile frame and a safety cover plate placing rack, accurate control is realized through a synchronous lifter and a servo motor, and the installation accuracy is guaranteed; through the design of the lifting support frame and the protective cover plate mechanism, the operation safety and the effective utilization of the space are ensured; in addition, the equipment is further provided with a standby manual lifting mechanism and a detachable disc cover plate so as to adapt to different installation requirements and emergency situations. Through the movable design of the electric lifting table, the mounting requirements of different heights and positions are met, the mounting efficiency, safety and reliability of the aero-engine are remarkably improved, the labor intensity is reduced, the maintenance cost is reduced, and an efficient scheme is provided for automatic mounting of the aero-engine.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft engine assembly, and in particular to an underground electric lifting platform for auxiliary installation of aircraft engines. Background Art

[0002] In the aviation manufacturing industry, aircraft engines are the core of aircraft flight power, and their installation plays an important role in aircraft assembly. The assembly process of aircraft engines is complex, and their installation accuracy, efficiency and quality have a vital impact on the overall performance and safety of the aircraft. At present, traditional aircraft engines have the characteristics of large size and weight, complex structure, small installation clearance, etc. At the same time, their surface is covered with complex pipelines and complex installation tracks, which has some obvious limitations.

[0003] Therefore, in order to solve the above problems, the current traditional aircraft engine installation operation generally adopts horizontal installation. Although this installation method can solve some of the above problems, it still has many shortcomings. First, the installation efficiency of the horizontal installation method is low. Since it is necessary to manually reach different heights through the ladder to tighten and fix other parts, and due to the randomness and uncertainty of the initial position of the engine, during the installation of the aircraft engine, this not only increases the labor intensity of the operator, but also prolongs the installation cycle. The installation posture needs to be adjusted in real time, and the installation efficiency is low, which is not conducive to large-scale production and rapid response to market demand; secondly, the installation trajectory is similar to the ladder. During the long-term operation of the horizontal installation, the long connecting rod and other components will be deformed due to the effect of gravity over time. This deformation will directly affect the installation accuracy and reduce the reliability of the engine; in addition, due to the large size and complex structure of the engine, the posture needs to be adjusted frequently during the installation process, which further increases the difficulty and complexity of the installation.

[0004] Based on this, a new underground electric lifting platform is needed. Summary of the invention

[0005] In view of this, an embodiment of the present specification provides an underground electric lifting and supporting platform for auxiliary installation of aircraft engines. The equipment achieves precise installation at different heights through an underground lifting mechanism, and adopts a vertical installation method to prevent long connecting rods from deforming due to gravity, thereby ensuring installation accuracy and reliability.

[0006] The key components of the equipment include underground lifting mechanism, profile frame, safety cover placement rack, etc.

[0007] The underground lifting mechanism is equipped with a C-clamp, synchronous lifting rod, lifting cover, etc. to ensure stable lifting and precise positioning of the engine. The profile frame includes a lifting support frame, a ground cover frame and a protective cover mechanism to achieve smooth operation of the lifting mechanism and safe protection of the ground; the safety cover placement rack is equipped with a movable bracket and a safety cover to ensure the safety of the installers. The entire system improves installation efficiency and safety through electric control and manual backup systems.

[0008] The embodiments of this specification provide the following technical solutions:

[0009] An underground electric lifting platform for auxiliary installation of aircraft engines, the underground electric lifting platform comprising an underground lifting mechanism, a profile frame, and a safety cover plate placement frame;

[0010] Wherein, the underground lifting mechanism is fixedly installed at the center position of the ground cover frame on the upper surface of the profile frame, and the underground lifting mechanism is fixedly connected to the lifting support frame through the ground cover frame;

[0011] The profile frame includes a lifting support frame, a ground cover frame and a protective cover mechanism, wherein the ground cover frame is fixedly connected at the top of the lifting support frame, the lifting support frame is fixed at the bottom of the ground cover frame, and the protective cover mechanism is installed at the bottom of the ground cover frame;

[0012] Guide rail sliders are vertically installed at the two inner side square tubes of the lifting support frame to realize the vertical movement of the lifting mechanism. The lifting support frame is equipped with an anti-falling rack. A detachable disc cover is installed at the center position above the lifting cover to remove or install the engine when the initial posture is flipped 180°.

[0013] The safety cover plate placement rack is located on the top of the profile frame, and the safety cover plate placement rack comprises a movable bracket and a safety cover plate, and the movable bracket is placed above the cover plate of the ground cover plate rack.

[0014] The protective cover mechanism comprises a protective cover, a guide rail slider, a movable bracket and a reducer lifter;

[0015] Wherein, the ground cover frame is installed at the bottom of the underground lifting mechanism, and is used to move up and down to fill the circular hole when the lifting mechanism is not working;

[0016] The protective cover is installed on the movable bracket and connected to the movable bracket through the guide rail slider. The reducer lifting platform is installed on the movable bracket. The lifting and lowering movement of the protective cover is controlled by driving the guide rail slider. The safety cover is a detachable component and is installed on the movable bracket. The ground cover frame includes a square tube frame, a cover and a latch block.

[0017] A lifting cover corresponding to the underground lifting mechanism is provided at the upper end of the ground cover frame, which is flush with the cover on the ground cover frame when rising or falling. A latch limit cylinder is installed at the circumferential edge of the bottom of the lifting cover, and the latch limit cylinder cooperates with the four latch limit cylinders on the underground lifting mechanism through four latch blocks.

[0018] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of this specification include at least:

[0019] This technical solution proposes an underground electric lifting platform for auxiliary installation of aircraft engines. The platform achieves precise positioning through an underground lifting mechanism and adopts a vertical installation method to effectively improve installation efficiency and accuracy. Key components include synchronous lifters, servo motors, etc. to ensure the stability and safety of operation. At the same time, it is equipped with a spare manual lifting mechanism and a removable disc cover to meet diverse installation needs.

[0020] The electric lifting platform improves the installation efficiency of aircraft engines; the underground lifting mechanism realizes the accumulation of installed parts and maximizes ergonomics when installing at different heights; the vertical installation effectively prevents component deformation and enhances the installation accuracy and reliability of the engine; the removable disc cover protects manual safety while meeting the engine assembly requirements at 180°; the protective cover mechanism ensures that the ground is flat and free of leaks when the lifting platform is not working, which enables better use of space and good safety; the backup manual lifting mechanism ensures that manual lifting can be used when automatic lifting cannot be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the general assembly of a lifting and lifting platform equipment in this application;

[0023] Figure 2 It is a schematic diagram of a profile mechanism structure in this application;

[0024] Figure 3 It is a schematic diagram of a ground cover frame structure in this application;

[0025] Figure 4 It is a schematic diagram of a lifting support frame structure in this application;

[0026] Figure 5 It is a schematic diagram of the structure of a protective cover mechanism in this application;

[0027] Figure 6 It is a schematic diagram of the structure of a safety cover placement rack in this application;

[0028] Figure 7 This is a schematic diagram of the structure of a safety cover placement rack (safety cover in use) in this application;

[0029] Figure 8 It is a schematic diagram of the structure of an underground lifting mechanism in this application;

[0030] Fig. 9 It is a diagram of the structure of an underground lifting mechanism in this application;

[0031] Fig.10 This is a schematic diagram of a profile structure cover in this application

[0032] Fig.11 It is a schematic diagram of a normal attitude of an aircraft engine reference diagram in this application;

[0033] Fig.12 This is a schematic diagram of a reference diagram of an aircraft engine flipped 180° in the present application;

[0034] in:

[0035] 1. Underground lifting mechanism; 2. Profile frame; 3. Safety cover placement rack; 4. Round hole on the ground cover rack; 5. Lifting support frame; 6. Ground cover rack; 7. Protective cover mechanism; 8. Square tube rack; 9. Cover; 10. Manual lifting port; 11. Pin block; 12. Pit entrance; 13. Servo motor; 14. Spare manual lifting mechanism; 15. Synchronous lift; 16. Support frame; 17. Guide rail slider; 18. Anti-fall rack; 19. Jack; 20. Bracket; 21. Protective cover; 22. Reducer lifter; 23. Guide rail slider; 24. Movable bracket; 25. Safety cover; 26. Synchronous lifting rod; 27. C-type limit block; 28. C-type clamp; 29. ​​Lifting cover; 30. Removable disc cover; 31. Latch limit cylinder; 32. Removable cloth bag; 33. Lifting base; 34. Anti-fall cylinder; 35. Intermediate machine brake. DETAILED DESCRIPTION

[0036] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0037] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0038] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0039] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0040] Furthermore, in the following description, specific details are provided to facilitate a thorough understanding of the examples.

[0041] Aircraft engines are the core of aircraft flight power. Engine installation plays an important role in the aircraft assembly process. The quality of engine installation has a great impact on aircraft performance. The existing domestic aircraft engine installation method mainly adopts horizontal installation technology. This installation method involves placing the engine or its parts in a horizontal position, and then using a sling for precise horizontal alignment. During the installation process of this installation method, the operator needs to climb to different heights via a ladder to tighten, fix and perform other related installation operations on various parts of the engine.

[0042] This traditional horizontal installation method has some significant limitations and disadvantages. First, due to the large size and weight of the engine, the engine structure is complex, the installation clearance is small, and the surface is covered with complex pipes. The installation trajectory is complicated, so very careful and precise operations are required to ensure the accuracy of the installation.

[0043] Secondly, due to the randomness and uncertainty of the initial position of the engine, the installation posture needs to be adjusted in real time during the installation of the aircraft engine, so that the operator needs to frequently go up and down the stairs during the installation process. Since manual operation is required, the operator needs to go up the stairs to different heights to tighten and fix other parts, which also limits the automation and intelligence level of the installation process. It is difficult to meet the requirements of modern aviation manufacturing industry for high efficiency and high precision. This not only increases the labor intensity of the operators, but also leads to a decrease in installation efficiency.

[0044] In addition, the installation trajectory of the traditional horizontal installation method is similar to a step. After the operator uses this traditional horizontal installation method for installation, as the installation time increases, components such as long connecting rods may be deformed due to gravity. This deformation will further affect the installation accuracy and reliability of the engine, resulting in low engine installation accuracy and unstable installation quality.

[0045] In this installation method, due to the randomness and uncertainty of the initial position of the engine, the sling brings the components to the required installation position during the installation process and needs to constantly adjust the position, which undoubtedly increases the complexity and difficulty of the installation.

[0046] In general, although the existing horizontal installation method still has certain application value in some aspects, its problems in efficiency, precision and labor intensity have gradually failed to meet the needs of modern aircraft engine installation. This installation method is labor-intensive and has low installation efficiency. Therefore, developing new installation technology and equipment to improve installation efficiency, reduce labor intensity, and ensure installation accuracy and reliability has become one of the technical problems to be solved in the aviation manufacturing industry.

[0047] At present, in view of the time-consuming and labor-intensive assembly process of aircraft engines, low installation efficiency, low installation precision and unstable installation, a set of underground electric lifting and supporting platform equipment for auxiliary installation of aircraft engines has been developed. This equipment has the advantages of high installation efficiency, strong reliability and high installation quality.

[0048] Firstly, the design of the underground lifting mechanism breaks through the limitations of the traditional horizontal installation method. Through its flexible lifting function, as the installation parts accumulate, operators can perform installation operations at different heights to maximize ergonomics.

[0049] The design of this mechanism allows operators to operate at the ground level. As the installation progresses, the lifting mechanism can smoothly lift the operator and components to the required height, thereby reducing the need for operators to climb stairs and reducing labor intensity.

[0050] At the same time, the precise control of the lifting mechanism ensures the safety and efficiency of the installation process, making the human-machine collaborative operation smoother and improving the overall installation quality and efficiency. This innovative installation method not only optimizes the operating environment of the operator, but also greatly improves the reliability and accuracy of aircraft engine installation.

[0051] In addition, the vertical installation method plays a key role in the assembly process of aircraft engines. The vertical installation method effectively avoids the problem of deformation of key components such as long connecting rods due to long-term gravity. In traditional horizontal installation, long connecting rods are prone to bending or twisting due to their own weight and extended installation time, which directly affects the installation accuracy and operation reliability of the engine. The vertical installation keeps the long connecting rod in a vertical state through vertical fixation and support, reducing the impact of gravity on it, thereby ensuring the precise alignment and stable assembly of various engine components. This installation method not only improves installation efficiency, but also significantly improves the overall performance and service life of the engine, providing a strong guarantee for the stable operation of aircraft engines.

[0052] At the same time, the removable disc cover is an indispensable device for aircraft engines. While ensuring the safety of operators, the removable disc cover can also adapt to the special assembly requirements of the engine flipping 180 degrees. This cover design allows for quick removal when the engine needs to install bottom or upper edge parts, providing operators with sufficient operating space and safety guarantees.

[0053] At the same time, when the engine is in a normal position or needs to be rotated 180° to complete a specific installation process, the disc cover can be easily removed, avoiding the limitations that may be caused by the traditional fixed structure. This design also takes into account the parts that may fall during the engine installation process, and the detachable design of the detachable disc cover further improves the efficiency and safety of the assembly work.

[0054] In addition, the protective cover mechanism is a key component in the design of the lifting platform. The protective cover mechanism plays a vital role when the lifting platform is not working. When the lifting mechanism is not working, the protective cover mechanism can ensure that the ground remains flat and has no holes, thereby providing a safe and tidy working environment. The design of the protective cover mechanism not only improves the utilization of space, but also avoids safety accidents that may be caused by uneven ground or holes.

[0055] Through the reducer lifter and guide rail slider installed at the bottom of the ground cover frame, the protective cover can be smoothly moved to the corresponding position and closely overlapped with the ground cover frame through the action of the lifter. In this way, even when the lifting platform is not in operation, the operator can move freely on the ground without worrying about safety hazards on the ground. In addition, the flat ground also facilitates the smooth progress of other work processes and enhances the safety and practicality of the entire working environment.

[0056] Correspondingly, the backup manual lifting mechanism ensures that the lifting platform can still complete the lifting task manually when the automatic lifting system fails or cannot work normally. The design of the backup manual lifting mechanism provides a reliable backup solution to ensure the continuity and efficiency of the installation work.

[0057] When the automatic lifting system cannot be operated due to power failure, gas failure or other technical problems, the operator can quickly switch to manual mode. By rotating the hand wheel or operating other manual control devices, the backup manual lifting mechanism can achieve smooth lifting and lowering of the equipment, ensuring that the installation process will not be interrupted by technical problems. This manual operation is not only simple and easy, but also can provide control accuracy similar to that of the automatic system, thus ensuring the quality and efficiency of the installation work.

[0058] In addition, the presence of a backup manual lifting mechanism also improves the reliability and flexibility of the entire system. It enables operators to respond quickly to emergencies and reduces production delays caused by equipment failures. This design reflects the careful consideration of potential risks during the installation of aircraft engines and the unremitting pursuit of improving operational safety and efficiency.

[0059] Therefore, this technical solution proposes a new type of underground electric lifting and lifting platform equipment for auxiliary installation of aircraft engines. This solution achieves precise installation at different heights through an underground lifting mechanism, adopts a vertical installation method to prevent deformation of components, is equipped with a removable disc cover to adapt to the installation requirements of a 180° flip posture, and a protective cover mechanism is set to ensure ground safety in the non-working state. It also includes a backup manual lifting mechanism to deal with failure of the automatic system, which comprehensively improves the installation efficiency, safety and reliability of the electric motor.

[0060] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0061] like Figure 1 As shown, Figure 1This is a schematic diagram of the general assembly of the lifting platform equipment. The lifting platform equipment is composed of an underground lifting mechanism 1, a profile frame 2, and a safety cover plate placement frame 3. Among them, the initial installation state of the engine is accurately positioned through the intermediate machine gate. This step ensures the stability and accuracy of the engine during the installation process. As a positioning device, the intermediate machine gate provides an initial reference point for the engine, so that the subsequent installation work can proceed smoothly on this basis.

[0062] After the engine is positioned, the hoist comes into play. According to the established installation sequence, the hoist moves the remaining components to be installed to the designated positions one by one. This process requires precise coordination and control to ensure that each component can be placed in the correct position accurately. The use of the hoist not only improves the installation efficiency, but also reduces the labor intensity of manual handling of components, and also reduces the installation errors caused by improper human operation.

[0063] Through this orderly way of handling and positioning components, the hoist moves the remaining required installation components into place according to the installation sequence, so that the installation work can be carried out more smoothly, and each component can be accurately installed on the engine at the right time. This efficient installation process, combined with modern equipment and technology, has significantly improved the quality and efficiency of aircraft engine installation and provided strong technical support for the development of the aviation manufacturing industry.

[0064] In one embodiment, the underground lifting mechanism 1 is fixedly installed at the center of the ground cover frame 6 on the upper surface of the profile frame 2, and the underground lifting mechanism 1 is fixedly connected to the lifting support frame 5 through the ground cover frame 6;

[0065] like Figure 2 As shown, Figure 2 1 is a schematic diagram of the structure of the profile mechanism. The underground lifting mechanism 1 is fixedly installed at the center of the ground cover frame 6 on the upper surface of the profile frame 2. The underground lifting mechanism 1 is connected to the slider on the support frame 16 to achieve lifting, which improves the stability and alignment accuracy during the lifting process. The support frame 16 serves as the base of the underground lifting mechanism 1 and provides a solid support point, so that the lifting mechanism 1 can move vertically smoothly thereon.

[0066] In addition, the underground lifting mechanism 1 is fixedly installed on the support frame 16, which helps to reduce any deviation or vibration that may occur during the lifting process, and the underground lifting mechanism 1 drives the product up and down to the installation position suitable for the operator, and manually tightens the installation. In addition, the central position installation design helps to evenly distribute the load and ensure the balance and symmetry of the entire lifting system, thereby improving the safety and reliability of the entire installation process.

[0067] Through this installation method, the underground lifting mechanism 1 can quickly and accurately lift the engine or its components to an appropriate height when needed, providing a convenient installation position for operators while minimizing the labor intensity and time consumption during the installation process. This efficient installation mechanism significantly improves the installation efficiency of aircraft engines while also ensuring the quality and safety of the installation work.

[0068] The connection between the underground lifting mechanism 1 and the lifting support frame 5 is realized by the slider on the lifting support frame 5. This fixed connection method ensures the stability of the lifting mechanism and the accuracy of operation. The ground cover frame 6 is flush with the ground. The underground lifting mechanism 1 is connected to the cover frame 6 through the lifting support frame 5 to achieve the smooth up and down movement of the lifting mechanism, so that the lifting mechanism can move smoothly in the vertical direction while maintaining a flat connection with the ground. Through the center fixation of the ground cover frame 6, the lifting mechanism 1 and the support frame 5 form a coordinated system.

[0069] In one embodiment, the profile frame 2 is the core structure of the entire lifting platform, and the profile frame 2 is composed of three main parts: the lifting support frame 5, the ground cover frame 6 and the protective cover mechanism 7. The lifting support frame 5, the ground cover frame 6 and the protective cover mechanism 7 together constitute a stable and fully functional system to support the installation process of the aircraft engine. The lifting frame 5 is used to provide a space support for up and down movement, and the motor installed on it is the power source; the ground cover frame 6 is flush with the ground, and its function is to provide a manual stepping space;

[0070] The function of the protective cover mechanism 7 is to ensure that when the lifting platform is not working, the opening on the ground can be covered by the protective cover to keep the ground flat and safe, prevent accidental falls or falling objects, thereby ensuring the safety of operators and the cleanliness of the work area.

[0071] When the lifting platform is not working, the ground is guaranteed to be flat and free of leaks, so that the space can be better utilized and the safety is good.

[0072] The lifting support frame 5 serves as the overall structural frame of the profile frame 2. The lifting support frame 5 bears the weight of the entire lifting mechanism and realizes vertical movement through precise control. The ground cover frame 6 is fixed on the top of the lifting support frame 5 to form a flat working platform for operators to stand and operate during the installation process. The lower part of the ground cover frame 6 is fixedly connected to the top of the lifting support frame 5 by electric welding, ensuring the stability and load-bearing capacity of the entire structure.

[0073] The protective cover mechanism 7 is installed at the bottom of the ground cover frame 6. The main function of the protective cover mechanism 7 is to move the protective cover to the corresponding position through the guide slider and the elevator when the lifting platform is not working, and overlap it with the ground cover frame 6, thereby providing an unobstructed flat ground, ensuring the safety of the working area and the effective use of space.

[0074] In one embodiment, the lifting support frame 5 is vertically installed with guide rail sliders 23 at the two inner square tubes. The vertical installation of the guide rail sliders 23 ensures that the underground lifting mechanism 1 can achieve smooth and accurate vertical movement along the guide rails, and its stability and safety can be guaranteed whether it is rising or falling.

[0075] like Figure 4 As shown, an anti-fall rack 18 is installed beside the inner guide rail of the lifting support frame 5. The design of the anti-fall rack 18 can immediately activate the safety mechanism in an emergency, such as when the automatic lifting system fails or the power is cut off and the gas is cut off, to prevent the lifting mechanism and the heavy objects carried by it from falling. This safety feature greatly improves the safety of the entire lifting platform and ensures the safety of operators and equipment.

[0076] In addition, a safety cover plate placement rack 3 is installed on the top of the profile frame 2, and the safety cover plate placement rack 3 is used to provide additional safety protection during the engine installation process. The safety cover plate placement rack 3 is composed of a movable bracket 24 and a safety cover plate 25. The movable bracket 24 is installed on the cover plate of the ground cover plate rack 6 and placed on the ground, and the position can be adjusted according to needs.

[0077] In one embodiment, the safety cover plate placement rack 3 is movable and can be moved to different positions according to needs to provide stable support for the safety cover plate 24. The safety cover plate 24 covers the underground lifting mechanism 1, and the safety cover plate placement rack 3 improves the safety of the installation work and increases the flexibility and adaptability of the operation.

[0078] like Figure 5 , Figure 6 As shown, the protective cover mechanism 7 is composed of a protective cover 21, a guide rail slider 17, a movable bracket 24, and a reducer lifter 22. The protective cover 21 is designed to cover the opening portion of the lifting mechanism 1. When the lifting mechanism is not in use, the protective cover 21 can be moved to a specified position to overlap with the ground cover frame 6. The guide rail slider 17 ensures the stability and accuracy of the protective cover 21 during movement.

[0079] The protective cover mechanism 7 is installed at the bottom of the ground cover frame 6. When the lifting mechanism is not in use, the protective cover is moved to the corresponding position through the guide rail slider, and the elevator lifts the protective cover to overlap with the (6) ground cover frame. At this time, the operator can walk freely on it, ensuring space utilization and safety.

[0080] The movable bracket 24 is a part of the protective cover plate placement frame 3. The movable bracket 24 is installed on the cover plate of the ground cover plate frame 6 and placed on the ground. The position can be adjusted according to the needs. The protective cover plate 21 is a detachable component, which is located above the underground lifting mechanism 1. Its function is to fill the circular hole on the ground cover plate frame 6 when the engine needs to install parts on the upper edge or close to the upper edge to ensure the safety of the assembly process. The reducer lifter 22 is installed on the movable bracket 24, and controls the lifting and lowering movement of the protective cover plate 21 by driving the guide rail slider 17. When the underground lifting mechanism is completely lowered to the ground, the movable bracket will move to the corresponding position, and the protective cover plate 21 is installed on the movable bracket 24 to ensure the smooth progress of the assembly work.

[0081] In addition, the reducer lifter 22 is responsible for controlling the lifting action of the protective cover 22 to ensure that it moves to the desired position smoothly and in a controlled manner. The ground cover frame 6 is installed at the bottom of the underground lifting mechanism 1 and works in conjunction with the protective cover mechanism 7 to ensure that the ground remains flat and safe when the lifting mechanism is not working. This design not only improves the safety of the workplace, but also optimizes the efficiency of space use.

[0082] In one embodiment, the protective cover 21 is mounted on a movable bracket 24 and connected to the movable bracket 24 via a guide rail slider 17, so that the protective cover 21 can be smoothly raised and lowered along a preset path, ensuring smoothness and accuracy of the operation.

[0083] Specifically, the reducer lifting platform 22 is a key driving device for controlling the lifting and moving of the protective cover 21, and the reducer lifting platform 22 is installed on the movable bracket 24. The reducer lifting platform 22 drives the guide rail slider 17 to accurately control the lifting and lowering of the protective cover 21, and can ensure smooth and safe completion when the lifting mechanism is raised to cover the lifting mechanism and provide a complete ground; and when the lifting and lowering is lowered to expose the working area.

[0084] In addition, the safety cover 21 is mounted on the movable bracket 24. The safety cover 21 is a detachable component. When the bottom or edge components of the engine need to be installed, the safety cover 21 can be quickly used to supplement the first circular hole 4 to provide the necessary operating space for the staff. After the work is completed, the safety cover 21 can be easily reinstalled to restore the integrity of the protective cover mechanism 7 and ensure the safety of the entire system.

[0085] In one embodiment, the safety cover plate placement rack 3 is movable, and the central area of ​​the ground cover plate rack 6 includes a first circular hole 4. The first circular hole 4 is to allow the engine or other important components to be lowered to the bottom for installation or maintenance when necessary. Through the first circular hole 4, the staff can directly contact the bottom of the engine and perform necessary operations without moving the entire engine structure, which greatly improves the efficiency and safety of the installation process.

[0086] like Figure 7 As shown, the safety cover plate (25) of the ground cover plate frame (6) has a second circular hole at the center thereof corresponding to the underground lifting mechanism.

[0087] Specifically, the safety cover 25 installed on the safety cover placement frame 3 has a second circular hole at a central position, and the second circular hole corresponds to the first circular hole 4 on the ground cover frame 6. The second circular hole is concentric with the first circular hole 4 and is smaller than the first circular hole 4. When the engine needs to be lowered to the bottom to realize the installation of the end, the entire underground lifting mechanism is lowered at this time, and the safety cover is used to fill the reduced circular hole 4, providing more operating space for the operator.

[0088] The detachable design of the safety cover 25 provides great flexibility. When the engine needs to be operated from the bottom, the safety cover 25 can be placed on the ground cover frame 6 to cover the first circular hole 4 to prevent any object or person from accidentally falling in, thereby ensuring the safety of the working area. When the bottom operation is not required, the safety cover 25 can be quickly removed, so that the lifting space of the underground lifting mechanism is sufficient;

[0089] This design not only improves the working efficiency of the lifting platform, but also greatly enhances its safety and adaptability. The close combination of the safety cover placement frame 3 and the ground cover frame 6, as well as the precise alignment and quick disassembly function of the safety cover 25, enable the entire system to flexibly respond to different work requirements while ensuring the safety of the staff.

[0090] In addition, the design of the safety cover plate placement rack 3 also takes into account ergonomics and ease of operation. When the engine needs to go down to the bottom to install parts on the upper edge or close to the upper edge, the underground lifting mechanism 1 is completely lowered underground at this time, and a safety cover plate is needed to fill the circular hole on the ground cover plate rack 6 to ensure safety when assembling the safety movable bracket 24 at this time.

[0091] The cover plate 25 can be easily moved to a suitable position when needed, and can be firmly fixed to the edge of the ground cover plate frame 6. This design reduces the labor intensity of the staff when installing or removing the safety cover plate 25, and improves the work efficiency. When the lifting platform is not working, the protective cover plate mechanism 7 moves the protective cover plate 21 to a position overlapping with the ground cover plate frame 6 through the action of the guide rail slider 17 and the reducer lifter 22, covering the entire working area, including the first circular hole 4. At this time, the safety cover plate is not needed, and the safety cover plate is placed on the movable bracket.

[0092] In one embodiment, the underground lifting mechanism 1 is a core component in the auxiliary installation system of the aircraft engine. It is composed of a plurality of precisely designed components that work together to achieve accurate positioning and safe lifting of the engine. The underground lifting mechanism 1 includes key components such as a C-type clamp 28, a synchronous lifting rod 27, a lifting cover plate 29, a detachable disc cover plate 30, a C-type limit block 27, a latch limit cylinder 31, an anti-fall cylinder 34, a detachable cloth bag 32 and a lifting base 33.

[0093] like Figure 8 , Fig. 9 As shown, the C-clamp 28 is installed on four synchronous lifting rods. The main function of the C-clamp 28 is to determine the initial installation position of the engine and ensure the stability and accuracy of the engine during the installation process. Through the fixation of the C-clamp 28, the engine can be ensured to maintain the correct alignment and position in the subsequent installation steps.

[0094] In addition, the synchronous lifting rod 27 is a key component connecting the lifting cover 29 and the C-shaped limit block 27, which are fixedly installed at the ring of the lifting base. The design of the synchronous lifting rod 27 ensures the stability and synchronization of the lifting cover 29 and the engine during the lifting process, and prevents tilting or deviation caused by inconsistent lifting. This synchronization mechanism is crucial to ensure the accuracy of engine installation.

[0095] like Fig.10 As shown, the function of the C-type clamp 28 is to limit and fix the intermediate engine brake of the engine, so as to confirm the initial installation position and state of the engine, and the four synchronous lifting rods ensure the stable lifting of the engine product; in the initial state, the lifting cover and the ground cover frame are in the same plane, and the four latch cylinders are extended and inserted into the latch blocks on the ground cover frame. At this time, only the four synchronous lifting rods drive the engine to lift and lower. When the C-type limit block 6 drops to the plane of the lifting cover, if you want to drop it again at this time, the latch cylinder 31 retracts.

[0096] like Fig.11 , 12 As shown, the lifting cover 25 is lowered together; when the engine brake is in the position as shown Fig.12When the engine is in the normal position (rotated 180° in normal posture), the detachable disc cover 30 needs to be removed to ensure the positioning and fixation of the engine; the function of the detachable cloth bag 32 is to collect screws and other parts that fall during installation; the lifting base is connected to the slider on the 5 lifting support frame to realize the lifting of the entire mechanism; when power is off and gas is cut off, the anti-fall cylinder 34 extends out and is inserted into the anti-fall rack 34 on the lifting support frame to prevent the mechanism from falling.

[0097] In addition, the C-shaped limit block 27 is fixedly installed at the middle position between the lifting cover plate 29 and the C-shaped clamp 28, and its function is to limit the further descent of the lifting cover plate 29 when it descends to a certain position. The installation design of the C-shaped limit block 27 ensures the safety and controllability of the lifting cover plate (29) during the descent process.

[0098] Meanwhile, the detachable disc cover 30 is installed on the lifting cover 29 and can be quickly removed according to the installation requirements. This design allows the engine to be installed in a 180° flipped posture, and the disc cover 30 can be quickly removed to provide operating space for engine installation. The presence of the detachable disc cover 30 also protects the internal components of the lifting mechanism from being damaged during the installation process.

[0099] The anti-falling cylinder 34 is located at the bottom of the underground lifting mechanism 1. Its function is to prevent the lifting mechanism 1 and the engine from falling in an emergency such as power failure or gas failure. The timely response and supporting effect of the anti-falling cylinder 34 greatly improve the safety of the entire installation system.

[0100] The latch limit cylinders 31 are installed corresponding to the four corners of the lifting cover plate 29. The main function of the latch limit cylinders 31 is to limit the further descent of the lifting cover plate 29 by extending the latch limit cylinders 31 when the lifting cover plate 29 descends to a certain position. This design ensures the precise control of the lifting cover plate 29 during the descent process, and also provides stable support for the engine.

[0101] The detachable cloth bag 32 is an auxiliary component installed on the lifting base 33. The lifting base 33 is a connecting component between the underground lifting mechanism 1 and the lifting support frame 5, and is connected to the guide rail slider 23 on the lifting support frame 5. This design enables the underground lifting mechanism 1 to achieve precise vertical movement along the guide rail slider 23, and its stability and synchronization can be guaranteed whether it is rising or falling.

[0102] Through the coordinated work of components such as the C-type clamp 28, the synchronous lifting rod 27, the lifting cover 29, the detachable disc cover 30, the C-type limit block 27, the latch limit cylinder 31, the anti-fall cylinder 34, the detachable cloth bag 32 and the lifting base 33, the underground lifting mechanism 1 can achieve precise positioning, safe lifting and stable support of the engine, providing a strong guarantee for the efficient and safe installation of the aircraft engine.

[0103] In one embodiment, the lifting frame 5 bears the weight of the entire lifting mechanism, ensuring the stability and accuracy of the lifting process. A protective cover mechanism 7 is installed on the side frame of the lifting frame 5. A synchronous lifter 15 is installed inside the lifting support frame 5, which is the core equipment for realizing precise control of the lifting mechanism.

[0104] Specifically, the bottom ends of the four synchronous lifting rods are fixedly mounted on the circular structure of the lifting base. This design enables the lifting rods to move up and down synchronously under the guidance of the lifting base, ensuring coordination and stability during the lifting process. The circular structure of the lifting base provides a stable support point, allowing the lifting rods to evenly distribute the load and achieve precise control of the lifting action, which is crucial to ensuring the safety and reliability of the entire lifting platform during operation.

[0105] In addition, the synchronous lifter 15 ensures the synchronization and stability of the lifting cover plate 29 and heavy objects such as the engine during the vertical movement through its precise control capability, and the servo motor 13, as the power source of the lifting support frame 5, is fixedly installed on the side outer surface of the support frame 16. The servo motor 13 provides a strong power support for the lifting mechanism with its high efficiency and precise control characteristics, ensuring the smoothness and precision of the lifting process.

[0106] At the bottom of the lifting support frame 5, a jack 19 is installed, which is an important tool for fine-tuning the position of the lifting mechanism during the installation process. The use of the jack 19 can ensure the centering and alignment of the equipment when the lifting mechanism is lowered into the pit, thereby improving the installation efficiency and accuracy. The adjustment ability of the jack 19 provides additional flexibility and adaptability for the entire lifting platform system, allowing the system to adapt to different installation environments and requirements.

[0107] In addition, the lifting support frame 5 is designed with a backup manual lifting mechanism to deal with possible failures or failures of the automatic lifting system. This design ensures that even if the automatic system cannot work, the lifting task can be completed manually, ensuring the continuity and reliability of the installation work. The lifting support frame 5 moves up and down through the guide slider under the operation of the servo motor and the synchronous lift. When rising or falling, it is flush with the cover plate on the ground cover plate frame. The synchronous lift prevents the product from tilting due to uneven movement when moving up and down, ensuring installation accuracy; when the automatic lifting cannot be used, the backup manual lifting mechanism can also realize the lifting and lowering of the mechanism by rotating the hand wheel to ensure installation efficiency; when the entire lifting and lifting platform is installed in the pit, the jack is used to ensure the centering of the equipment during the downward movement process, and try to ensure that each device in the pit is in a line, thereby improving installation efficiency.

[0108] In one embodiment, the ground cover frame 6 plays a dual role of support and protection. The ground cover frame 6 is composed of several key components: square tube frame 8, cover plate 9 and latch block 11. The square tube frame 8 is the main structure of the cover frame, providing the necessary support and stability, and its design strength is sufficient to bear the weight of the engine and its components. The cover plate 9 covers the square tube frame 8 to form a flat working surface.

[0109] The upper end of the ground cover frame 6 is specially designed with a lifting cover 29 corresponding to the underground lifting mechanism 1. When the underground lifting mechanism 1 rises, the lifting cover 29 can dock with the ground cover frame 6 to form a continuous surface, ensuring the flatness and safety of the working area. This design allows the engine to always remain in a controlled and stable environment during the lifting process, reducing the risks that may occur during the installation process.

[0110] A latch limit cylinder 31 is installed at the bottom circumferential edge of the lifting cover 29. The function of the latch limit cylinder 31 is to limit its further lifting by extending the latch when the lifting cover 29 reaches a specific position, thereby ensuring the precise positioning of the lifting cover 29 at the required height. The synchronous elevator 15 of the lifting support frame ensures the synchronous movement between the latch limit cylinder 31 and the anti-fall cylinder 34. This synchronization mechanism is crucial to the stability and safety of the entire lifting system. As a safety device, the anti-fall cylinder 34 can respond quickly in the event of a system failure or power outage to prevent the lifting mechanism and the engine from accidentally falling, thereby protecting the safety of equipment and personnel.

[0111] In addition, the combination of the square tube frame 8 and the cover plate 9 in the ground cover plate frame 6 not only provides a solid support, but also can be quickly installed and removed to adapt to different work requirements. The latch block 11 allows the cover plate 9 to be quickly removed or repositioned when necessary, providing flexibility for the installation and maintenance of the engine.

[0112] In one embodiment, the protective cover mechanism 7 is fixedly installed at the bottom of the ground cover frame 6, and this design enhances the stability of the entire structure. The cover 9 is an important part of the ground cover frame 6, which is fixedly connected between two mutually connected square tube frames 8. The square tube frames 8 are the skeleton structure of the ground cover frame 6, and they are connected and fixed by four latch blocks 11 arranged in the center of the inner side of the four sides of the rectangle.

[0113] Specifically, the latch cylinder is installed at the bottom of the lifting cover, and each latch block 11 corresponds precisely to a corner, and such a layout ensures the structural stability and symmetry of the ground cover frame 6. The design of the latch blocks 11 allows them to cooperate with the four latch limit cylinders on the lifting support frame 5 to form a stable connection point, which is crucial to ensure the stability of the entire lifting mechanism during operation.

[0114] In addition, the four latch blocks 11 are closely matched with the four latch limit cylinders on the underground lifting mechanism. When the cylinders are activated, the latch blocks will extend or retract accordingly to fix or release the movement of the lifting mechanism. This mechanism ensures the precise positioning of the lifting mechanism at a specific position, while providing a safety locking function to prevent accidental movement during installation, ensuring the safety and accuracy of the operation.

[0115] The synchronous lifting rod 26 is not connected to any of the lifting support frame 5 and the ground cover frame 6. Its function is to ensure the synchronous and stable lifting of the engine fixed by the C-clip. The underground lifting mechanism is independently lifted. Its connection point is the slider connection between the lifting base and the support frame. In addition, the four holes on the lifting base are matched with the screw limit of the synchronous lifting machine of the support frame to ensure the synchronization and coordination during the lifting process. This design effectively prevents the tilt or deviation caused by inconsistent lifting, and improves the reliability and safety of the entire lifting platform system.

[0116] In addition, the design of the ground cover frame 6 also takes into account the convenience of maintenance and operation. The combination of the square tube frame 8 and the cover 9 not only provides a solid support, but also can be quickly installed and disassembled to meet different work requirements. The design of the latch block 11 allows the cover 9 to be quickly removed or repositioned when necessary, providing flexibility for the installation and maintenance of the engine.

[0117] The cover plate 9 is an important part of the ground cover plate frame 6. The cover plate is installed on the surface of the square tube frame, flush with the ground, and is in direct contact with the operator and the engine components. In order to ensure that the cover plate 9 can withstand various challenges during the engine installation process, such as the pressure of heavy objects and frequent trampling, it is designed as a detachable structure. This design allows the cover plate 9 to be quickly and conveniently removed and reinstalled when it needs to be replaced or maintained, greatly reducing maintenance time and cost.

[0118] The material selection of the square tube frame 8 and the cover plate 9 is also critical. In order to ensure the stability and durability of the entire ground cover plate frame 6, they are all made of high-strength steel. This material not only has excellent load-bearing capacity, but also can resist the influence of various harsh environments, such as corrosion and wear, thereby ensuring the long-term stable operation of the ground cover plate frame 6.

[0119] In terms of the electric lifting method, the method achieves smooth vertical movement of the underground lifting mechanism 1 by accurately controlling the synchronous lifting machine 15 through the servo motor 13. The precise control capability of the servo motor 13 ensures the stability and synchronization of the lifting mechanism 1 during movement, which is essential for the precise installation of the engine.

[0120] The guide rails 23 on the lifting support frame 5 play a vital role in the lifting process. They ensure the precise alignment of the lifting mechanism 1 during vertical movement, preventing installation errors caused by inaccurate alignment. This precise alignment is essential to ensure the accuracy and quality of engine installation.

[0121] When the lifting mechanism 1 reaches the predetermined position, the C-clip 28 is used to fix the intermediate engine brake of the engine, thereby determining the initial installation position of the engine. The fixing function of the C-clip 28 is crucial to ensure the stability and accuracy of the engine during the subsequent installation process.

[0122] In order to ensure the alignment of the lifting support frame 5 and the ground cover frame 6, fine adjustments are made after the equipment is placed in the pit by using the jack 19. The jack ensures that the entire equipment is centered in the pit when it enters the pit, so that the equipment is located in the center of the pit and that every device in the pit is in one line to improve installation efficiency.

[0123] After the engine is installed, the lifting mechanism 1 is operated to return to the initial position to prepare for the next lifting operation. This efficient operation process not only improves the efficiency of the installation work, but also reduces the idle time of the equipment, thereby improving the overall work efficiency.

[0124] In one embodiment, after the engine is lifted to a suitable height, the lifting cover of the underground lifting mechanism 1 is then operated to align it with the ground cover frame 6. This step requires extremely high precision to ensure that the lifting cover 29 can be smoothly and accurately engaged with the ground cover frame 6 to provide a stable support platform for the engine.

[0125] In order to achieve the connection and separation between the lifting cover 29 and the ground cover frame 6, it is crucial to control the four latch limit cylinders 11. These cylinders are precisely installed at the four corners of the lifting cover 29. By controlling their extension and contraction, the connection between the lifting cover 29 and the ground cover frame 6 can be effectively locked or released. This design not only improves the reliability of the connection, but also allows the operator to quickly connect and separate as needed, thereby improving the efficiency of the entire installation process.

[0126] Whether the removable disc cover is removed or not depends on the initial installation posture of the engine. When the engine is in a normal posture, the disc cover remains installed to provide necessary support and protection; when the engine needs to be flipped 180° for installation, the disc cover needs to be removed in order to correctly position and fix the engine to ensure the smooth installation process. Whether the removable disc is removed and in what posture the engine is fixed to the C-clamp need to be decided before. If it is in a normal posture, it does not need to be removed; if it is flipped 180°, it needs to be removed.

[0127] During the 180° flipping of the engine, the C-shaped limit block 27 and the four synchronous lifting rods 26 play a vital role. The C-shaped limit block 27 supports the lifting and provides additional stability for the engine during the lifting process, while the synchronous lifting rods 26 ensure the balance and synchronization of the engine during the lifting process.

[0128] The specific workflow is as follows:

[0129] The underground lifting mechanism moves until the lifting cover plate is flush with the cover plate of the ground cover plate rack;

[0130] When the engine is turned 180°, the removable disc needs to be removed; it is not necessary in the normal position;

[0131] The engine is lifted to the installation location by a hoist, and the intermediate engine brake is manually installed on the C-type clamp;

[0132] The four synchronous lifting rods of the underground lifting mechanism drive the engine to move to different installation heights for installation;

[0133] When the engine end needs to be installed, the four latch cylinders of the underground lifting mechanism are retracted, and the entire underground lifting mechanism drives the engine to continue to descend;

[0134] The operator removes the safety cover from the safety cover placement rack and fills the circular hole 4 on the ground cover rack, so that the operator has more installation space;

[0135] After installation is completed, the underground lifting mechanism is raised to the required position and the lifting device takes the engine away.

[0136] Throughout the entire process, precise control of the underground lifting mechanism 1 and the coordinated work of various components are key to ensuring the smooth progress of the engine installation process, from the alignment of the lifting cover 29 and the ground cover frame 6, to the control of the latch limit cylinder 11, to the removal and reinstallation of the detachable disc cover 30, and the stability of the C-shaped limit block 27 and the synchronous lifting rod 26 during the flipping process.

[0137] In this specification, the engine is smoothly moved vertically and precisely positioned through precise control of the underground lifting mechanism 1, which significantly improves the installation efficiency. At the same time, the flexibility and adaptability of the installation process are enhanced through innovative designs such as the detachable disc cover 30, the C-type clamp 28 and the latch limit cylinder 31. The introduction of the protective cover mechanism 7 and the anti-fall cylinder 34 further ensures the safety of the operators and the stability of the equipment.

[0138] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An underground electric lifting platform for auxiliary installation of aircraft engines, characterized in that: The underground electric lifting platform comprises an underground lifting mechanism (1), a profile frame (2), and a safety cover plate placement frame (3); The underground lifting mechanism (1) is fixedly installed at the center of the ground cover frame (6) on the upper surface of the profile frame (2), and the underground lifting mechanism (1) and the lifting support frame (5) are fixedly connected via the ground cover frame (6); The profile frame (2) comprises a lifting support frame (5), a ground cover frame (6) and a protective cover mechanism (7); the ground cover frame (6) is fixedly connected at the top of the lifting support frame (5); the lifting support frame (5) is fixed at the bottom of the ground cover frame (6); and the protective cover mechanism (7) is installed at the bottom of the ground cover frame (6); Guide rail sliders (23) are vertically installed at the two inner side square tubes of the lifting support frame (5) to realize the vertical movement of the lifting mechanism, and anti-fall racks (18) are installed on both sides of the inner side guide rails of the lifting support frame (5); The safety cover plate placement rack (3) is located on the top of the profile frame (2), and the safety cover plate placement rack (3) comprises a movable bracket (24) and a safety cover plate (25). The movable bracket (24) is installed on the cover plate of the ground cover plate rack (6) and is placed on the ground, and its position can be adjusted according to needs.

2. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 1, characterized in that: The protective cover plate mechanism (7) comprises a protective cover plate (21), a guide rail slider (17), a movable bracket (24) and a reducer lifter (22); Wherein, the ground cover frame (6) is installed at the bottom of the underground lifting mechanism (1) and is used to cover the lifting cover when the lifting mechanism is not working; The protective cover plate (21) is installed on the movable bracket (24) and connected to the movable bracket (24) via a guide rail slider (17); the protective cover plate (21) is a detachable component; The speed reducer lifter (22) is mounted on a movable bracket (24) and controls the lifting and lowering movement of the protective cover plate (21) by driving the guide rail slider (17).

3. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 1, characterized in that: The safety cover placement rack (3) is movable, the central area of ​​the ground cover rack includes a first circular hole (4) on the ground cover rack, and the central position of the safety cover (25) of the ground cover rack (6) has a second circular hole corresponding to the underground lifting mechanism (1).

4. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 1, characterized in that: The underground lifting mechanism (1) comprises a C-shaped clamp (28), a synchronous lifting rod (27), a lifting cover plate (29), a detachable disc cover plate (30), a C-shaped limit block (27), a latch limit cylinder (31), an anti-fall cylinder (34), a detachable cloth bag (32) and a lifting base (33); The C-shaped clamp (28) is installed on the top of four synchronous lifting rods (27) to fix the intermediate engine brake of the engine and determine the initial installation position of the engine; The bottom ends of the four synchronous lifting rods (27) are installed on the lifting base ring, and the synchronous lifting rods (27) are connected to the lifting cover plate (29) and the C-shaped limit block (27); The C-shaped limit block (27) is installed and fixed at the middle position between the lifting cover plate (29) and the C-shaped clamp (28); The detachable disc cover plate (30) is mounted on the lifting cover plate (29); The anti-falling cylinder (34) is located at the bottom of the underground lifting mechanism (1); The latch limit cylinder (31) is installed corresponding to the four corners of the lifting cover plate (29); The lifting base (33) is connected to the guide rail slider (23) on the lifting support frame (5).

5. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 4, characterized in that: A protective cover mechanism (7) is installed on the side frame of the lifting frame (5), a synchronous lifter (15) is installed inside the lifting support frame (5), a servo motor (13) is fixedly installed on the side outer surface of the support frame (16) of the lifting support frame (5), and a jack (19) is installed at the bottom of the lifting support frame (5).

6. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 1, characterized in that: The ground cover frame (6) comprises a square tube frame (8), a cover plate (9) and a latch block (11); The upper end of the ground cover frame (6) is provided with a lifting cover (29) corresponding to the underground lifting mechanism (1); The lifting cover plate (29) is flush with the cover plate on the ground cover plate frame (6) when the underground lifting mechanism (1) rises or descends; A latch-limiting cylinder (31) is installed at the circumferential edge of the bottom of the lifting cover plate (29); The latch limiting cylinder (31) is installed at the bottom of the lifting cover plate (29).

7. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 6, characterized in that: A protective cover plate mechanism (7) is fixed below the ground cover plate frame (6); The cover plate (9) is installed on the surface of the square tube frame (8) and is flush with the ground; Four latch blocks (11) are arranged at the center of the inner sides of the four rectangular sides of the square tube frame (8), each latch block (11) corresponds to a corner, and the four latch blocks (11) are used in conjunction with four latch limit cylinders on the underground lifting mechanism.

8. The underground electric lifting platform for auxiliary installation of aircraft engines according to claim 7, characterized in that: The cover plate (9) is a detachable structure to facilitate replacement; The square tube frame (8) and the cover plate are made of high-strength steel to bear the weight during the installation of the engine.

9. An electric lifting method for auxiliary installation of an aircraft engine, characterized in that: include: The electric lifting platform controls the synchronous lifter (15) through the servo motor (13) to achieve smooth vertical movement of the underground lifting mechanism (1); The guide rail slider (23) on the lifting support frame (5) is used to achieve stable lifting; After the lifting mechanism (1) reaches a predetermined position, a C-type clamp (28) is used to fix the intermediate engine brake of the engine to determine the initial installation position of the engine; After the equipment is placed in the pit, the jack (19) is used to make fine adjustments so that the equipment is located at the center of the pit, so that the equipment is on the same line, thereby improving installation efficiency; After the engine is installed, the lifting mechanism (1) is operated to return to the initial position to prepare for the next lifting operation.

10. The electric lifting method for auxiliary installation of an aircraft engine according to claim 9, characterized in that: include: After the engine is lifted to a desired height, the lifting cover of the underground lifting mechanism (1) is operated to align with the ground cover frame (6); The connection and separation of the lifting cover plate (29) and the ground cover plate frame (6) are achieved by controlling four latch limit cylinders (11); After the engine is positioned and fixed, the removable disc cover (30) is removed; The C-shaped limit block (27) and the four synchronous lifting rods (26) work together to ensure a stable installation process.

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