Supporting tool for large aircraft fuselage

Abstract

The utility model discloses a supporting tool for a large aircraft body. The supporting tool comprises a bracket assembly and a supporting lifting platform. The bracket assemblies are used for supporting different parts of the bottom of a machine body, and the two ends of each bracket assembly are detachably connected with the corresponding supporting lifting platform; when the bracket assemblies are fixedly connected with the supporting lifting platforms and supported and fixed to the bottom of the machine body, the machine body is suspended. The utility model has the characteristics of compact structure, convenience in disassembly and assembly, high structural strength, high turnover utilization rate and the like, and meets the support and transfer requirements of the large aircraft fuselage.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft fuselage support, and in particular relates to a supporting tooling for a large aircraft fuselage. Background Art

[0002] In the field of aircraft manufacturing and maintenance, the aircraft fuselage needs to be transported and supported. When the aircraft fuselage is not assembled with the mid-wing, its appearance is relatively "slender", so the head, middle and tail of the fuselage must be supported during the assembly operation. During the support process, the traditional support tooling cannot adjust the up and down height, and the operator can only work in a fixed position, which causes great trouble for the operator to operate in a certain area. Moreover, the fuselage cannot be moved when using the support tooling, and the tooling is not easy to disassemble and assemble, which is extremely inconvenient if the fuselage needs to be transferred.

[0003] After removing the wings, tail, landing gear and other large parts of a large aircraft, the total length of the fuselage is 34.8 meters, the maximum width is 2.9 meters, the maximum height is 3.3 meters, and the maximum weight is 17 to 18 tons. The maintenance process of this type of aircraft is full-frame fixed repair. After the aircraft enters the factory, the three main load-bearing frames at the front, middle and rear of the fuselage are supported and fixed with the fuselage maintenance bracket, and all parts and accessories are removed for repair or replacement before being assembled according to the process. The three main load-bearing frames are required to bear loads evenly at the same time, but the fuselage has no overall lifting points and direct lifting is not allowed, which brings great challenges to the support and maintenance of the fuselage of this large aircraft. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model provides a support tooling for large aircraft fuselages that has a compact structure, is easy to assemble and disassemble, has high structural strength and high turnover rate, and meets the support transfer requirements for large aircraft maintenance. To achieve the above purpose, the utility model can adopt the following technical solutions:

[0005] A supporting tool for a large aircraft fuselage comprises a detachably connected bracket assembly and a supporting lifting platform; a plurality of groups of the bracket assemblies are used to support different parts of the bottom of the fuselage, and both ends of each of the bracket assemblies are detachably connected to the corresponding supporting lifting platform; when the plurality of groups of bracket assemblies are connected and fixed to the plurality of groups of supporting lifting platforms and supported and fixed at the bottom of the fuselage, the fuselage is suspended.

[0006] As a further improvement of the present invention, the bracket assembly includes a support plate, a strong connecting plate, an H-shaped steel and a reinforcing lining plate. The support plate is arranged on the top of the H-shaped steel to support the fuselage. Reinforcing lining plates are provided on both sides of the H-shaped steel. Strong connecting plates are provided on the sides of the reinforcing lining plates. The strong connecting plates are used to connect and support the lifting platform.

[0007] As a further improvement of the present invention, the bracket assembly also includes a rectangular tube, which is nested inside the H-shaped steel and close to the bottom of the support plate.

[0008] As a further improvement of the utility model, one end of the strong connecting plate is hinged to the side of the reinforcing lining plate, and the strong connecting plate can rotate along the hinge point; the other end of the strong connecting plate is provided with a second threaded hole for connecting to the supporting lifting platform.

[0009] As a further improvement of the utility model, the supporting lifting platform includes a lifting support assembly, a lifting support frame and a hydraulic jack; the lifting support frame adopts a frame structure, the lifting support assembly and the hydraulic jack are respectively arranged at the top and bottom of the lifting support frame and are connected to each other, the lifting support assembly is used to connect the end of the bracket assembly, and the hydraulic jack is used to drive the lifting support assembly to be lifted and lowered in the vertical direction along the guide channel steel of the lifting support frame, so as to realize that the lifting support assembly and the bracket assembly are on the same horizontal line, thereby realizing the transfer of the fuselage load to the lifting support frame.

[0010] As a further improvement of the utility model, the lifting support assembly includes a connecting seat, a lifting roller, a support connecting plate and a jack head; a support connecting plate is provided on the upper part of the connecting seat, and the support connecting plate is used to connect the end of the bracket assembly; the jack head is fixed on the connecting seat and located at the bottom of the support connecting plate, and is used to connect the hydraulic jack; a plurality of lifting rollers are evenly distributed on the side of the connecting seat, and the lifting rollers are nested on the inner side of the guide channel steel of the lifting support frame; under the drive of the hydraulic jack, the lifting rollers are reciprocated and lifted along the guide channel steel of the lifting support frame to realize the reciprocating lifting of the lifting support assembly along the vertical direction.

[0011] As a further improvement of the present invention, the lifting support assembly also includes a support screw and an adjusting handwheel, one end of the support screw is connected to the top of the connecting seat, and the other end of the support screw passes through the top of the lifting support frame, and the adjusting handwheel is connected to the support screw with a trapezoidal thread and is located at the top of the lifting support frame; the adjusting handwheel is turned to enable the support screw to connect and lock the connecting seat and the lifting support frame.

[0012] As a further improvement of the present invention, the four corners of the base of the lifting support frame are provided with ground jacks and rotatable wheel groups; the rotatable wheel group is used to realize the overall movement of the supporting lifting platform. When the supporting lifting platform is to enter the working state, the ground jack is used to lift the supporting lifting platform as a whole to realize the flipping of the rotatable wheel group. The lifting support frame can be lowered to the ground as a whole by operating the ground jack.

[0013] As a further improvement of the present invention, a scale is provided on the side of the guide channel steel along the vertical direction, and the scale is used to display the lifting height of the lifting support assembly on the lifting support frame to achieve synchronous lifting of multiple supporting lifting platforms.

[0014] As a further improvement of the utility model, the lifting support frame is also provided with an inclined reinforcing rod, the top end of the reinforcing rod is connected to the upper part of the guide channel steel, and the bottom of the reinforcing rod is connected to the base of the lifting support frame.

[0015] Compared with the prior art, the advantages of the utility model are:

[0016] 1. The supporting fixture for the fuselage of a large aircraft of the utility model comprises a bracket assembly and a supporting lifting platform to form the main structure of the supporting fixture. Furthermore, by arranging multiple groups of bracket assemblies at different positions of the bottom of the fuselage for supporting, and detachably connecting the two ends of the bracket assemblies with the corresponding supporting lifting platforms, the fuselage is stably supported. When the multiple groups of bracket assemblies are connected and fixed to the multiple groups of supporting lifting platforms and supported and fixed at the bottom of the fuselage, the fuselage is suspended. The supporting demand of the large aircraft during maintenance is met, a larger operating space can be provided for the operator, and the support and fixation of the large aircraft fuselage for transfer is realized.

[0017] 2. The supporting tooling for large aircraft fuselages of the utility model sets a lifting support frame as a frame structure, and sets a lifting support assembly and a hydraulic jack at the top and bottom of the lifting support frame respectively, and uses the lifting support assembly to connect the end of the bracket assembly. The hydraulic jack is used to drive the lifting support assembly to lift and lower in the vertical direction along the guide channel steel of the lifting support frame, so that the hydraulic jack only needs to bear the axial load, and guides the loads and torques in other directions to the structural body of the lifting support frame to bear, thereby ensuring the overall safety of the loading tooling.

[0018] 3. The supporting tooling for large aircraft fuselages of the utility model is specially provided with a protective supporting screw rod on the lifting support assembly. On the one hand, it provides safety protection when a hydraulic jack fails. On the other hand, it transfers all loads to the structural body, thereby enabling rapid replacement of a full set of hydraulic cylinders to adapt to emergencies in production operations.

[0019] 4. The supporting tooling for large aircraft fuselages of the utility model realizes basic synchronization of the lifting of multiple hydraulic jacks by specially arranging a scale on the lifting support frame and reading the scale, effectively avoiding the series connection of multiple hydraulic jack cylinders, and the hydraulic cylinders in each supporting lifting platform work independently, with a simple structure, easy operation, and not prone to failure. Even if a failure occurs, it can be quickly replaced, thereby improving the flexibility of the loading tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structural principle of connecting the supporting tooling and the fuselage of a large aircraft in a specific embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the structural principle of the fuselage bracket in a specific embodiment of the utility model;

[0022] Figure 3 This is a schematic diagram of the structural principle of the supporting lifting platform in a specific embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structural principle of the lifting support in a specific embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the structural principle of the support lifting platform 2 in a specific embodiment of the utility model;

[0025] Legend: 1. Bracket assembly; 11. Support plate; 12. Strong connecting plate; 121. First threaded hole; 122. Second threaded hole; 13. H-shaped steel; 14. Rectangular tube; 15. Reinforced lining plate; 16. Bolt; 2. Support lifting platform; 21. Lifting support assembly; 211. Support screw rod; 212. Adjusting hand wheel; 213. Connecting seat; 214. Lifting roller; 215. Support connecting plate; 216. Jack head; 217. Third threaded hole; 22. Lifting support frame; 221. Ground jack; 222. Rotatable wheel set; 223. Ruler; 224. Guide channel steel; 225. Reinforcement rod; 226. Base; 23. Hydraulic jack; 100. Fuselage. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0027] In the description of the present invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0029] Example

[0030] like Figures 1 to 5 As shown, the supporting tooling for a large aircraft fuselage of the utility model comprises a bracket assembly 1 and a supporting lifting platform 2. Multiple sets of bracket assemblies 1 are used to support different parts of the bottom of the fuselage 100, and both ends of each bracket assembly 1 are detachably connected to the corresponding supporting lifting platform 2. When multiple sets of bracket assemblies 1 are connected and fixed to multiple sets of supporting lifting platforms 2 and supported and fixed at the bottom of the fuselage 100, the fuselage 100 is lifted.

[0031] In this embodiment, the main structure of the supporting tooling is formed by the bracket assembly 1 and the supporting lifting platform 2. Furthermore, by arranging multiple sets of bracket assemblies 1 at different positions of the bottom of the fuselage 100 for supporting, and detachably connecting the two ends of the bracket assembly 1 to the corresponding supporting lifting platform 2, the fuselage 100 is stably supported. When multiple sets of bracket assemblies 1 are connected and fixed to multiple sets of supporting lifting platforms 2, and supported and fixed at the bottom of the fuselage 100, the fuselage 100 is suspended, which not only meets the support requirements of large aircraft maintenance, can provide operators with a larger operating space, but also realizes the support and fixation of the large aircraft fuselage for transfer.

[0032] like Figure 2 As shown, in this embodiment, the bracket assembly 1 includes a support plate 11, a strong connecting plate 12, an H-shaped steel 13 and a reinforcing lining plate 15. The support plate 11 is arranged on the top of the H-shaped steel 13 to support the fuselage 100, and the reinforcing lining plates 15 are arranged on both sides of the H-shaped steel 13. The end of the reinforcing lining plate 15 is provided with a strong connecting plate 12, and the strong connecting plate 12 is used to connect and support the lifting platform 2.

[0033] Furthermore, the bracket assembly 1 further comprises a rectangular tube 14 , which is nested inside the H-shaped steel 13 and close to the bottom of the support plate 11 to enhance the overall supporting strength of the bracket assembly 1 .

[0034] like Figure 2As shown, in this embodiment, one end of the strong connection plate 12 is hinged to the side of the reinforcing lining plate 15, and the strong connection plate 12 can rotate along the hinge point to reduce the space occupied by the bracket assembly 1 and facilitate the handling of the bracket assembly 1. The other end of the strong connection plate 12 is provided with two side-by-side second threaded holes 122 for connecting the supporting lifting platform 2.

[0035] Furthermore, four first threaded holes 121 are provided on the side of the strong connection plate 12 near the hinge point. When the other end of the strong connection plate 12 is connected to the supporting lifting platform 2, the bolts 16 are screwed into the first threaded holes 121 to achieve the connection and fixation between the strong connection plate 12 and the reinforcing lining plate 15, so that the strong connection plate 12 and the reinforcing lining plate 15 form a whole, thereby improving the supporting capacity of the bracket assembly 1.

[0036] like Figure 3 As shown, in this embodiment, the supporting lifting platform 2 includes a lifting support assembly 21, a lifting support frame 22 and a hydraulic jack 23. The lifting support frame 22 adopts a frame structure, and the lifting support assembly 21 and the hydraulic jack 23 are respectively arranged at the top and bottom of the lifting support frame 22 and connected to each other. The lifting support assembly 21 is used to connect the end of the bracket assembly 1, and the hydraulic jack 23 is used to drive the lifting support assembly 21 to lift vertically along the guide channel steel 224 of the lifting support frame 22, so as to realize that the lifting support assembly 21 and the bracket assembly 1 are on the same horizontal line, thereby realizing that the load of the fuselage 100 is transferred to the lifting support frame 22.

[0037] like Figure 4 As shown, in this embodiment, the lifting support assembly 21 includes a connecting seat 213, lifting rollers 214, a support connecting plate 215 and a jack head 216. A support connecting plate 215 is provided on the upper part of the connecting seat 213, and the support connecting plate 215 is used to connect the end of the bracket assembly 1. The jack head 216 is fixed on the connecting seat 213 and is located at the bottom of the support connecting plate 215, and is used to connect the hydraulic jack 23. A plurality of lifting rollers 214 are evenly distributed on the side of the connecting seat 213, and the lifting rollers 214 are nested inside the guide channel steel 224 of the lifting support frame 22. Driven by the hydraulic jack 23, the lifting rollers 214 are lifted and lowered reciprocatingly along the side of the guide channel steel 224 to realize the lifting support assembly 21 to lift and lower reciprocatingly along the vertical direction.

[0038] In this embodiment, two third threaded holes 217 are arranged side by side at the bottom of the support connecting plate 215. The third threaded hole 217 corresponds to the second threaded hole 122, and the bracket assembly 1 can be connected and fixed to the supporting lifting platform 2 by screwing screws into the second threaded hole 122 and the third threaded hole 217, which has the characteristics of reliable connection and convenient assembly and disassembly.

[0039] Furthermore, the lifting support assembly 21 further includes a support screw 211 and an adjusting hand wheel 212, one end of the support screw 211 is connected to the top of the connecting seat 213, the other end of the support screw 211 passes through the top of the lifting support frame 22, and the adjusting hand wheel 212 is sleeved on the support screw 211 with a trapezoidal thread and is located at the top of the lifting support frame 22. The adjusting hand wheel 212 is screwed to enable the support screw 211 to lock the connecting seat 213.

[0040] like Figure 5 As shown, in this embodiment, the lifting support frame 22 includes a ground jack 221, an indexable wheel set 222 and a guide channel steel 224. The guide channel steel 224 constitutes the frame-type main structure of the lifting support frame 22, and the lifting roller 214 is nested inside the guide channel steel 224. The lifting roller 214 drives the connecting seat 213 to reciprocate along the guide channel steel 224. The four corners of the bottom of the frame-type main structure are provided with a ground jack 221 and an indexable wheel set 222, and the indexable wheel set 222 is used to realize the overall movement of the supporting lifting platform 2. When the supporting lifting platform 2 is to enter the working state, the ground jack 221 is used to lift the supporting lifting platform 2 as a whole to realize the flipping of the indexable wheel set, and the lifting support frame 22 can be dropped to the ground as a whole by operating the ground jack.

[0041] Furthermore, a ruler 223 is provided on the side of the guide channel steel 224 along the vertical direction, and the ruler 223 is used to display the lifting height of the lifting support assembly 21 on the lifting support frame 22, so as to achieve the synchronization of the lifting of multiple supporting lifting platforms 2. By specially setting a ruler on the lifting support frame and reading the ruler, the basic synchronization of the lifting of multiple hydraulic jacks is achieved, and the series connection of multiple hydraulic jack cylinders is effectively avoided. Moreover, each hydraulic cylinder works independently, has a simple structure, is easy to operate, is not prone to failure, and can be quickly replaced even if a failure occurs, thereby improving the flexibility of the use of the loading tooling.

[0042] In this embodiment, a ground jack 221 and a rotatable wheel set 222 are installed at the bottom of the lifting support frame 22, so that the lifting support frame 22 can be dropped to the ground as a whole during operation to ensure stability during operation. The lifting support frame 22 adopts a frame structure, so that the hydraulic jack 23 only needs to bear the load axially, and the deadweight of the supporting lifting platform 2 and the larger size of the lifting support frame 22 can ensure that the lifting platform 2 will not overturn when bearing. At the same time, a scale 223 is installed on the guide channel steel 224 as a vertical beam on both sides of the lifting support frame 22, and the scale 223 reading is used to ensure that the oil cylinders of the six hydraulic jacks 23 are lifted synchronously. If the synchronous oil cylinders in the prior art are used, the six oil cylinders are distributed far away, which will cause the complexity of the entire structure, inconvenience in transportation and use, and the failure rate will be higher, which is not suitable for frequent off-site use. Compared with the synchronous oil cylinders in the prior art, the supporting lifting platform 2 of this embodiment has a simple structure, convenient operation, and is not easy to fail. Moreover, each supporting lifting platform 2 works independently, and can be quickly repaired or replaced even if a failure occurs. Furthermore, the adjusting hand wheel 212 is used to lock the supporting screw rod 211 after the supporting lifting platform 2 is lifted to a predetermined position, so as to protect the oil cylinder of the hydraulic jack 23 and prevent oil cylinder failure, and can lock the position and quickly replace the oil cylinder when the oil cylinder fails.

[0043] like Figure 5 As shown, in this embodiment, a reinforcing rod 225 is further provided on the lifting support frame 22, the top of the reinforcing rod 225 is connected to the upper part of the guide channel steel 224, and the bottom of the reinforcing rod 225 is connected to the base 226 of the lifting support frame 22. A stable triangular structure is formed between the guide channel steel 224, the reinforcing rod 225 and the base 226, which improves the structural strength of the lifting support frame 22 to meet the support requirements of the fuselage of a large aircraft.

[0044] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solution of the present invention without departing from the spirit and technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A support tool for a large aircraft fuselage, characterized in that: It comprises a bracket assembly (1) and a supporting lifting platform (2); a plurality of groups of the bracket assemblies (1) are used to support different parts of the bottom of a fuselage (100), and both ends of each of the bracket assemblies (1) are detachably connected to a corresponding supporting lifting platform (2); when the plurality of groups of the bracket assemblies (1) are connected and fixed to the plurality of groups of the supporting lifting platforms (2), and supported and fixed on the bottom of the fuselage (100), the fuselage (100) is suspended.

2. The supporting tool for a large aircraft fuselage according to claim 1, characterized in that: The bracket assembly (1) comprises a support plate (11), a strong connecting plate (12), an H-shaped steel (13) and a reinforcing lining plate (15); the support plate (11) is arranged on the top of the H-shaped steel (13) for supporting the fuselage (100); reinforcing lining plates (15) are arranged on both sides of the H-shaped steel (13); strong connecting plates (12) are arranged on the sides of the reinforcing lining plates (15); and the strong connecting plates (12) are used to connect and support the lifting platform (2).

3. The supporting tool for a large aircraft fuselage according to claim 2, characterized in that: The bracket assembly (1) also includes a rectangular tube (14), which is nested inside the H-shaped steel (13) and close to the bottom of the support plate (11).

4. The supporting tool for a large aircraft fuselage according to claim 3, characterized in that: One end of the strong connection plate (12) is hinged to the side of the reinforcing lining plate (15), and the strong connection plate (12) can rotate along the hinge point; the other end of the strong connection plate (12) is provided with a second threaded hole (122) for connecting to the supporting lifting platform (2).

5. The supporting tool for a large aircraft fuselage according to any one of claims 1 to 4, characterized in that: The supporting lifting platform (2) comprises a lifting support assembly (21), a lifting support frame (22) and a hydraulic jack (23); the lifting support frame (22) adopts a frame structure, the lifting support assembly (21) and the hydraulic jack (23) are respectively arranged at the top and bottom of the lifting support frame (22) and are connected to each other, the lifting support assembly (21) is used to connect the end of the bracket assembly (1), and the hydraulic jack (23) is used to drive the lifting support assembly (21) to be lifted and lowered in the vertical direction along the guide channel steel (224) of the lifting support frame (22), so as to realize that the lifting support assembly (21) and the bracket assembly (1) are on the same horizontal line, thereby realizing that the load of the fuselage (100) is transferred to the lifting support frame (22).

6. The supporting tool for a large aircraft fuselage according to claim 5, characterized in that: The lifting support assembly (21) comprises a connecting seat (213), lifting rollers (214), a support connecting plate (215) and a jack head (216); a support connecting plate (215) is provided on the upper part of the connecting seat (213), the support connecting plate (215) is used to connect the end of the bracket assembly (1), and the jack head (216) is fixed on the connecting seat (213) and is located at the bottom of the support connecting plate (215) and is used to connect the hydraulic jack (23); a plurality of lifting rollers (214) are evenly distributed on the side of the connecting seat (213), and the lifting rollers (214) are nested inside the guide channel steel (224) of the lifting support frame (22); under the drive of the hydraulic jack (23), the lifting rollers (214) are reciprocated and lifted along the guide channel steel (224) of the lifting support frame (22), so as to realize the lifting support assembly (21) to be lifted and lifted reciprocated along the vertical direction.

7. The supporting tool for a large aircraft fuselage according to claim 6, characterized in that: The lifting support assembly (21) further comprises a supporting screw rod (211) and an adjusting hand wheel (212); one end of the supporting screw rod (211) is connected to the top of the connecting seat (213); the other end of the supporting screw rod (211) passes through the top of the lifting support frame (22); the adjusting hand wheel (212) is connected to the supporting screw rod (211) by a trapezoidal thread and is located at the top of the lifting support frame (22); the adjusting hand wheel (212) is turned to enable the supporting screw rod (211) to connect and lock the connecting seat (213) and the lifting support frame.

8. The supporting tool for a large aircraft fuselage according to claim 6, characterized in that: The four corners of the base (226) of the lifting support frame (22) are each provided with a ground-supporting jack (221) and a rotatable wheel set (222); the rotatable wheel set (222) is used to realize the overall movement of the supporting lifting platform (2); when the supporting lifting platform (2) is to enter a working state, the ground-supporting jack (221) is used to lift the supporting lifting platform (2) as a whole to realize the flipping of the rotatable wheel set (222); the lifting support frame (22) can be dropped to the ground as a whole by operating the ground-supporting jack (221).

9. The supporting tool for a large aircraft fuselage according to claim 6, characterized in that: The side of the guide channel steel (224) is provided with a scale (223) along the vertical direction, and the scale (223) is used to display the lifting height of the lifting support assembly (21) on the lifting support frame (22), so as to achieve the synchronous lifting of multiple supporting lifting platforms (2).

10. The supporting tool for a large aircraft fuselage according to claim 6, characterized in that: The lifting support frame (22) is also provided with a reinforcing rod (225), the top end of the reinforcing rod (225) is connected to the upper part of the guide channel steel (224), and the bottom end of the reinforcing rod (225) is connected to the base (226) of the lifting support frame (22).

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