A belly skin disassembly and assembly equipment for aircraft maintenance

Abstract

The present invention belongs to the field of aircraft maintenance technology, and specifically discloses an aircraft maintenance belly skin disassembly and assembly equipment, comprising a pair of support bars and a movable wheel at the bottom thereof, wherein the two support bars are connected together by a plurality of bidirectional hydraulic rods, the bidirectional hydraulic rods being fixed on an intermediate bar, the lower wall array of the intermediate bar being provided with a telescopic hydraulic cylinder, the lower end of the telescopic hydraulic cylinder being provided with a vacuum suction cup, the upper wall array of the support bars being provided with support bars, the upper ends of the support bars being connected together by a cross bar, the support bars and the cross bar being provided with a lifting assembly, the lifting assembly being provided with a self-matching adjustment assembly, and a contour automatic adaptation assembly being provided between the two opposite self-matching adjustment assemblies. The present invention connects the connecting blocks in sequence through a curable connecting assembly to form a chain-like structure, which is automatically attached to the surface of the belly skin according to the shape of the belly skin, and automatically completes the fixing of the position of the connecting blocks to avoid deformation of the belly skin during the lifting process.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft maintenance, and in particular relates to an aircraft belly skin disassembly and assembly device for aircraft maintenance. Background Art

[0002] After being subjected to aerodynamic forces, the skin transmits these forces to the connected fuselage and wing frames. This complex force distribution, coupled with direct contact with the outside world, requires not only high strength and good plasticity, but also a smooth surface and high corrosion resistance. The role of an aircraft skin is to maintain its shape and ensure excellent aerodynamic properties, placing extremely high demands on its design.

[0003] Aircraft repairs and seasonal inspections require the disassembly and assembly of the aircraft's belly skin. The belly skin is relatively large, with a height generally between 1 and 2 meters, and the cross-sectional shape of the belly skin is a curved arc. During the disassembly and assembly process, the belly skin needs to be hoisted. Due to its heavy weight, the belly skin is easily deformed during the hoisting process, thereby affecting the aerodynamic characteristics of the aircraft's appearance.

[0004] Therefore, a maintenance belly skin disassembly and assembly equipment is needed to solve the above problems. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a belly skin disassembly and assembly equipment for aircraft maintenance, in which the connecting blocks are connected in sequence through a curable connecting assembly to form a chain-like structure, which is automatically attached to the surface of the belly skin according to the shape of the belly skin, and the position of the connecting blocks is automatically fixed to avoid deformation of the belly skin during the lifting process.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a belly skin disassembly and assembly device for aircraft maintenance, comprising a pair of support bars and movable wheels at their lower parts, wherein the two support bars are connected together by a plurality of bidirectional hydraulic rods, wherein the bidirectional hydraulic rods are fixed to an intermediate bar, wherein a telescopic hydraulic cylinder is provided in an array on the lower wall of the intermediate bar, wherein a vacuum suction cup is provided at the lower end of the telescopic hydraulic cylinder, wherein a support bar is provided in an array on the upper wall of the support bar, wherein the upper ends of the support bar are connected together by a cross bar, wherein a lifting assembly is provided on the support bar and the cross bar, wherein a self-matching adjustment assembly is provided on the lifting assembly, and an automatic contour adaptation assembly is provided between the two opposing self-matching adjustment assemblies;

[0007] The contour automatic adaptation component includes a hinge component, a connecting block and a curable connecting component. The two hinge components are respectively arranged at the lower part of the two self-matching adjustment components. There are multiple connecting blocks. The two hinge components are respectively provided with connecting blocks. Adjacent connecting blocks are connected together by a curable connecting component. The connecting blocks are provided with an adsorption component.

[0008] Furthermore, the curable connection assembly includes a hinged plate, a connecting shaft, a protrusion and an electrorheological fluid. There are two hinged plates, and one end of the two hinged plates is rotatably connected through a connecting shaft. The end of the hinged plate is provided with a rotating cavity, and the inner wall of the rotating cavity is provided with an insulating layer. The electrorheological fluid fills the rotating cavity, and the end of the connecting shaft is in the rotating cavity. The protrusion array is provided at both ends of the connecting shaft, and the protrusion is provided in the rotating cavity. The other end of the hinged plate is fixed to the end of the connecting block.

[0009] Furthermore, the adsorption assembly includes a Bernoulli suction cup, a connecting column and a second spring. The upper wall of the connecting block is provided with a placement hole, which is a blind hole. The inner bottom wall of the placement hole is provided with a spring hole, which is a blind hole. The second spring is arranged on the inner bottom wall of the spring hole. The connecting column is slidably arranged in the spring hole. The lower end of the connecting column is connected to the second spring. The Bernoulli suction cup is slidably arranged in the placement hole. The Bernoulli suction cup is arranged at the upper end of the connecting column.

[0010] Furthermore, the curable connection component has a main electrical circuit, and the main electrical circuit is provided with multiple resistors. The inner wall of the spring hole is provided with electrical contact 1 and electrical contact 2. The electrical contact 1 is electrically connected to the main electrical circuit through a wire, and the electrical contact 2 is electrically connected to the electrorheological fluid in the rotating cavity through a wire. The electrorheological fluid in each rotating cavity is connected in parallel with a resistor.

[0011] Furthermore, the lifting assembly includes a placing platform, a winch, a guide frame, a guide wheel, a support frame, a sliding hoop and a lifting rope. The placing platform is arranged in the middle of the outer wall of the support bar, the winch is arranged on the upper wall of the placing platform, the guide frame is arranged in the middle of the upper wall of the cross bar, the guide wheels are symmetrically arranged on the guide frame, the support frame is arranged on the inner side of the support rod, the sliding hoop is slidably arranged on the support rod, the sliding hoop is fixedly connected to the support frame, the lifting rope is wrapped around the winch, the lifting rope passes around two guide wheels, and the movable end of the lifting rope is fixed to the upper wall of the support frame.

[0012] Furthermore, the self-matching adjustment component includes a sliding block, a vertical rod, a spring 1, a baffle and a locking screw. The side wall of the sliding block is penetrated by a sliding hole, and the sliding block is sleeved on the side wall of the support frame through the sliding hole. The vertical rod is slidably arranged on the sliding block, the baffle is arranged at the upper end of the vertical rod, and the spring 1 is set on the vertical rod. The upper and lower ends of the spring 1 are respectively arranged on the baffle and the upper wall of the sliding block, and the locking screw is arranged on the outer wall of the sliding block.

[0013] Furthermore, the hinge assembly includes a hinge frame and a connecting plate, the hinge frame is arranged at the lower end of the vertical rod, the hinge frame and the connecting plate are rotationally connected through a rotating shaft, and the connecting block is fixedly connected to the connecting plate.

[0014] Furthermore, the outer side wall of the support frame is provided with scale lines.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows:

[0016] 1. In the self-matching adjustment assembly, the vertical rod can move up and down under the action of spring 2. A connecting block and a curable connecting assembly are provided between each set of hinged assemblies. When the lifting rope pulls the support frame upward, the support frame drives the sliding block, vertical rod, hinged assembly, connecting block, and curable connecting assembly upward. Because the vertical rod can move up and down under the action of spring 21, the connecting blocks in the middle of different hinged assemblies can all contact the belly skin according to the shape of the underside of the fuselage.

[0017] 2. When the connecting block is attached to the surface of the aircraft's belly, the Bernoulli suction cup is pressed down, which in turn presses down on the connecting column and spring 2, connecting electrical contact 1 and electrical contact 2 together. As the connecting blocks sequentially contact the aircraft's belly surface, the Bernoulli suction cups on adjacent connecting blocks are pressed down, connecting electrical contact 1 and electrical contact 2 corresponding to each connecting block. At this point, the resistor and its corresponding electrorheological fluid form an electrical circuit through wires. Voltage is applied to both ends of the electrorheological fluid, causing it to change from liquid to solid. The solid electrorheological fluid then integrates the connecting shaft, protrusion, and hinge plate into a single entity, securing the positions of the two connecting blocks.

[0018] 3. In the process of shortening the bidirectional hydraulic rod, the distance between the two support bars decreases, and the connecting blocks between the two hinged assemblies gradually contact the outer surface of the belly from the middle to the sides, so that the connecting blocks are attached to the outer surface of the belly in sequence according to the outer surface shape of the belly skin, and the position of the connecting blocks is fixed according to the above operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of a belly skin disassembly and assembly equipment for aircraft maintenance proposed by the present invention;

[0020] Figure 2 for Figure 1 The main view;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of the self-matching adjustment component and the contour automatic adaptation component;

[0022] Figure 4 Schematic diagram of the three-dimensional structure of the self-matching adjustment component;

[0023] Figure 5 is a schematic diagram of the three-dimensional structure of the curable connection component;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the connecting block and the hinged plate;

[0025] Figure 7 A schematic diagram of the internal structure of the connection between two hinged plates and a connecting shaft;

[0026] Figure 8 Schematic diagram of the internal structure of the hinged plate;

[0027] Figure 9 A schematic diagram of the three-dimensional structure of the connecting shaft and the protrusion;

[0028] Figure 10 Automatically adapt the components to the circuit connection diagram of the main electrical circuit for the contour;

[0029] Figure 11 for Figure 10 Enlarged view of part A;

[0030] Figure 12 for Figure 11 Enlarged view of part B;

[0031] Figure 13 for Figure 11 Enlarged view of part C in the middle.

[0032] Among them, 1. Support bar, 2. Moving wheel, 3. Bidirectional hydraulic rod, 4. Support bar, 5. Cross bar, 6. Lifting assembly, 7. Self-matching adjustment assembly, 8. Contour automatic adaptation assembly, 9. Articulated assembly, 10. Connecting block, 11. Curable connection assembly, 12. Adsorption assembly, 13. Hinge plate, 14. Connecting shaft, 15. Protrusion, 16. Electrorheological fluid, 17. Vacuum suction cup, 18. Rotating cavity, 19. Scale line, 20. Bernoulli suction cup, 21. Connecting column, 22. Spring II, 2 3. Placement hole, 24. Spring hole, 25. Main electrical circuit, 26. Resistor, 27. Electric contact one, 28. Electric contact two, 29. Placement table, 30. Winch, 31. Guide frame, 32. Guide wheel, 33. Support frame, 34. Sliding hoop, 35. Lifting rope, 36. Sliding block, 37. Vertical rod, 38. Spring one, 39. Baffle, 40. Locking screw, 41. Sliding hole, 42. Articulated frame, 43. Connecting plate, 44. Rotating axis, 45. Middle bar, 46. Telescopic hydraulic cylinder.

[0033] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0036] like Figure 1 、 Figure 2 、 Figure 3 As shown, the present invention proposes a belly skin disassembly and assembly equipment for aircraft maintenance, comprising a pair of support bars 1 and a moving wheel 2 at the lower part thereof, wherein the two support bars 1 are connected together by a plurality of bidirectional hydraulic rods 3, wherein the bidirectional hydraulic rods 3 are fixed to an intermediate bar 45, and a telescopic hydraulic cylinder 46 is provided in an array on the lower wall of the intermediate bar 45, and a vacuum suction cup 17 is provided at the lower end of the telescopic hydraulic cylinder 46, and a support bar 4 is provided in an array on the upper wall of the support bar 1, and the upper ends of the support bar 4 are connected together by a cross bar 5, and a lifting assembly 6 is provided on the support bar 1 and the cross bar 5, and a self-matching adjustment assembly 7 is provided on the lifting assembly 6, and a contour automatic adaptation assembly 8 is provided between the two opposite self-matching adjustment assemblies 7;

[0037] The automatic contour adaptation component 8 includes a hinge component 9, a connecting block 10 and a curable connecting component 11. The two hinge components 9 are respectively arranged at the lower part of the two self-matching adjustment components 7. There are multiple connecting blocks 10. The two hinge components 9 are respectively provided with a connecting block 10. The adjacent connecting blocks 10 are connected together by a curable connecting component 11. The connecting block 10 is provided with an adsorption component 12. In the initial state, the automatic contour adaptation component 8 is chain-shaped.

[0038] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9As shown, the curable connection assembly 11 includes a hinge plate 13, a connecting shaft 14, a protrusion 15 and an electrorheological fluid 16. There are two hinge plates 13, and one end of the two hinge plates 13 is rotatably connected by the connecting shaft 14. The end of the hinge plate 13 is provided with a rotating cavity 18, and the inner wall of the rotating cavity 18 is provided with an insulating layer. The electrorheological fluid 16 fills the rotating cavity 18, and the end of the connecting shaft 14 is in the rotating cavity 18. The protrusion 15 array is provided at both ends of the connecting shaft 14, and the protrusion 15 is provided in the rotating cavity 18. The other end of the hinge plate 13 is fixed to the end of the connecting block 10.

[0039] like Figure 1 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 As shown, the adsorption component 12 includes a Bernoulli suction cup 20, a connecting column 21 and a second spring 22. The upper wall of the connecting block 10 is provided with a placement hole 23, and the placement hole 23 is a blind hole. The inner bottom wall of the placement hole 23 is provided with a spring hole 24, and the spring hole 24 is a blind hole. The second spring 22 is arranged on the inner bottom wall of the spring hole 24. The connecting column 21 is slidably arranged in the spring hole 24. The lower end of the connecting column 21 is connected to the second spring 22. The Bernoulli suction cup 20 is slidably arranged in the placement hole 23. The Bernoulli suction cup 20 is arranged at the upper end of the connecting column 21. The connecting column 21 is conductive, and the Bernoulli suction cup 20 is controlled by external high-pressure gas.

[0040] like Figure 1 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13 As shown, the curable connection component 11 has a main electrical circuit 25, and the main electrical circuit 25 is provided with multiple resistors 26. The inner wall of the spring hole 24 is provided with an electric contact 1 27 and an electric contact 2 28. The electric contact 1 27 is electrically connected to the main electrical circuit 25 through a wire, and the electric contact 2 28 is electrically connected to the electrorheological fluid 16 in the rotating cavity 18 through a wire. The electrorheological fluid 16 in each rotating cavity 18 is respectively connected in parallel with the resistor 26. The electric contact 1 27 and the electric contact 2 28 are embedded in the inner wall of the spring hole 24 and are insulated from the connecting block 10. In the initial state, the spring 2 22 bounces the connecting column 21 upward, and the electric contact 1 27 and the electric contact 2 28 are not in contact with the connecting column 21. The electric contact 1 27 and the electric contact 2 28 are in a disconnected state.

[0041] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4As shown, the lifting assembly 6 includes a placement platform 29, a winch 30, a guide frame 31, a guide wheel 32, a support frame 33, a sliding hoop 34 and a lifting rope 35. The placement platform 29 is arranged in the middle of the outer wall of the support bar 1, the winch 30 is arranged on the upper wall of the placement platform 29, the guide frame 31 is arranged in the middle of the upper wall of the horizontal bar 5, the guide wheel 32 is symmetrically arranged on the guide frame 31, the support frame 33 is arranged on the inner side of the support rod 4, the sliding hoop 34 is slidably arranged on the support rod 4, the sliding hoop 34 is fixedly connected to the support frame 33, the lifting rope 35 is wound on the winch 30, the lifting rope 35 passes around the two guide wheels 32, and the movable end of the lifting rope 35 is fixed on the upper wall of the support frame 33.

[0042] like Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 As shown, the self-matching adjustment component 7 includes a sliding block 36, a vertical rod 37, a spring 38, a baffle 39 and a locking screw 40. The side wall of the sliding block 36 is penetrated by a sliding hole 41, and the sliding block 36 is sleeved on the side wall of the support frame 33 through the sliding hole 41. The vertical rod 37 is slidably arranged on the sliding block 36, the baffle 39 is arranged on the upper end of the vertical rod 37, the spring 38 is sleeved on the vertical rod 37, and the upper and lower ends of the spring 38 are respectively arranged on the baffle 39 and the upper wall of the sliding block 36, and the locking screw 40 is arranged on the outer wall of the sliding block 36.

[0043] like Figure 1 、 Figure 4 As shown, the hinge assembly 9 includes a hinge frame 42 and a connecting plate 43. The hinge frame 42 is provided at the lower end of the vertical rod 37. The hinge frame 42 and the connecting plate 43 are rotationally connected via a rotating shaft 44. The connecting block 10 is fixedly connected to the connecting plate 43.

[0044] like Figure 3 As shown, the outer wall of the support frame 33 is provided with scale lines 19 , and the position of the sliding block 36 is adjusted according to the scale lines 19 , so that two opposite sliding blocks 36 can be aligned.

[0045] In specific use, when disassembling the belly skin, the staff first removes the rivets of the belly skin, leaving a few rivets to prevent the belly skin from falling off the aircraft frame, and moves the support bar 1. The two support bars 1 are on both sides of the aircraft body, and the connecting block 10 and the curable connecting component 11 are on the lower side of the belly. According to the scale line 19 on the side wall of the support frame 33, the position of the sliding block 36 on the support frame 33 is adjusted, and the sliding block 36 drives the vertical rod 37 and the hinge assembly 9 to move. The hinge assembly 9 drives the connecting block 10 and the curable connecting component 11 to move, so that the connecting block 10 and the curable connecting component 11 are in the middle of the lower side of the belly, and then adjusts the extension of the telescopic cylinder to make the vacuum suction cup 17 adsorbed on the ground, and adjusts the extension of the two-way hydraulic rod 3. The hydraulic rod 3 drives the support rod 4 to move to both sides. At this time, the contour automatic adaptation component 8 is in a state close to being straightened. The locking screw 40 is unscrewed, and the external high-pressure gas is connected. The Bernoulli suction cup 20 is in an adsorption state, and the winch 30 is turned on. The winch 30 reels the lifting rope 35, and the lifting rope 35 pulls the support frame 33 upward. The support frame 33 drives the sliding block 36 to move upward, and the sliding block 36 drives the vertical rod 37 and the hinge assembly 9 to move upward. The hinge assembly 9 drives the connecting block 10 and the curable connecting assembly 11 to move upward. Since the vertical rod 37 can move up and down under the action of the spring 38, the connecting block 10 in the middle between different hinge assemblies 9 can contact the belly skin. Then adjust the two-way hydraulic rod 3 to shorten, and the different hinge assemblies 9 can be connected. The connecting block 10 contacts the belly skin from the middle to both sides in sequence. When the connecting block 10 is attached to the surface of the belly, the Bernoulli suction cup 20 is pressed down, and the Bernoulli suction cup 20 presses down the connecting column 21. The connecting column 21 presses down the spring 22. The connecting column 21 connects the electrical contact 1 27 and the electrical contact 2 28 together. In the process of the connecting block 10 contacting the belly surface in sequence, the Bernoulli suction cup 20 on the adjacent connecting block 10 is pressed down, and the electrical contact 1 27 and the electrical contact 2 28 corresponding to this connecting block 10 are connected together. At this time, the resistor 26 and its corresponding electrorheological fluid 16 form an electrical circuit through the wire. Voltage is applied to both ends of the electrorheological fluid 16, and the electrorheological fluid 16 changes from liquid to solid. The solid electrorheological fluid 16 connects the connecting shaft 14, the protrusion 15 and the hinge The connecting plate 13 forms a whole, and the positions of the two connecting blocks 10 are fixed. In the process of shortening the two-way hydraulic rod 3, the distance between the two support bars 1 is reduced, and the connecting block 10 between the two hinged assemblies 9 gradually contacts the outer surface of the belly from the middle to the two sides, so that the connecting block 10 is attached to the outer surface of the belly in sequence according to the outer surface shape of the belly skin, and the position of the connecting block 10 is fixed according to the above operation, and then the locking screw 40 is tightened. After the maintenance personnel remove the last few rivets of the belly skin, the belly skin is fixed on the connecting block 10, and then the winch 30 is adjusted to gradually release the lifting rope 35. Under the action of gravity, the belly skin follows the support frame 33, the sliding block 36, the vertical rod 37, the hinged assembly 9 and the connecting block 10 to descend.After the belly skin is disassembled, when it is necessary to remove the belly skin, the external high-pressure gas is disconnected and the suction force of the Bernoulli suction cup 20 disappears;

[0046] When installing the belly skin, adjust the position of the sliding block 36 on the support frame 33 according to the scale line 19 on the side wall of the support frame 33. The sliding block 36 drives the vertical rod 37 and the hinge assembly 9 to move. The hinge assembly 9 drives the connecting block 10 and the curable connecting assembly 11 to move. Then adjust the extension of the telescopic cylinder to make the vacuum suction cup 17 adsorbed on the ground, adjust the extension of the two-way hydraulic rod 3, and the two-way hydraulic rod 3 drives the support rod 4 to move to both sides. At this time, the contour automatic adaptation component 8 is in a state close to being straightened. Unscrew the locking screw 40, and hoist the repaired or new belly skin on the connecting block 10 and the curable connecting assembly 11 between the hinge assembly 9. Repeat the operation when disassembling the belly skin. Connecting block 10 According to the outer surface shape of the belly skin, it is attached to the outer surface of the belly in sequence and fixed, and then the locking screw 40 is tightened to finally fix the belly skin, open the winch 30 to reel in the lifting rope 35, open the vacuum suction cup 17, adjust the telescopic cylinder to shorten, move the support bar 1 so that the skin is under the belly, and then adjust the telescopic hydraulic cylinder 46 to extend so that the vacuum suction cup 17 is adsorbed on the ground again, so that the belly skin is docked with the aircraft frame, completing the installation of the belly skin, disconnect the main electrical circuit 25, and no longer apply voltage to both ends of all the electrorheological fluids 16. The electrorheological fluid 16 changes from solid to liquid, and the two hinged plates 13 between the two connecting blocks 10 can rotate freely, and the contour automatic adaptation component 8 returns to a chain shape.

[0047] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0048] While the embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the invention.

[0049] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A belly skin disassembly and assembly device for aircraft maintenance, comprising a pair of support bars (1) and a movable wheel (2) at their lower parts, wherein the two support bars (1) are connected together by a plurality of bidirectional hydraulic rods (3), the bidirectional hydraulic rods (3) being fixed on an intermediate bar (45), a telescopic hydraulic cylinder (46) being arranged on the lower wall of the intermediate bar (45), and a vacuum suction cup (17) being arranged at the lower end of the telescopic hydraulic cylinder (46), characterized in that: The upper wall array of the support bar (1) is provided with a support bar (4), the upper ends of the support bar (4) are connected together by a cross bar (5), the support bar (1) and the cross bar (5) are provided with a lifting assembly (6), the lifting assembly (6) is provided with a self-matching adjustment assembly (7), and a contour automatic adaptation assembly (8) is provided between two opposing self-matching adjustment assemblies (7); The contour automatic adaptation component (8) comprises a hinge component (9), a connecting block (10) and a curable connecting component (11), wherein the two hinge components (9) are respectively arranged at the lower parts of the two self-matching adjustment components (7), the connecting blocks (10) are provided in plurality, and the two hinge components (9) are respectively provided with a connecting block (10), and adjacent connecting blocks (10) are connected together by the curable connecting component (11), and the connecting blocks (10) are provided with an adsorption component (12).

2. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 1, characterized in that: The curable connection assembly (11) includes a hinge plate (13), a connecting shaft (14), a protrusion (15) and an electrorheological fluid (16). There are two hinge plates (13), one end of the two hinge plates (13) is rotatably connected through the connecting shaft (14), the end of the hinge plate (13) is provided with a rotating cavity (18), the inner wall of the rotating cavity (18) is provided with an insulating layer, the electrorheological fluid (16) fills the rotating cavity (18), the end of the connecting shaft (14) is located in the rotating cavity (18), the protrusion (15) array is provided at both ends of the connecting shaft (14), the protrusion (15) is provided in the rotating cavity (18), and the other end of the hinge plate (13) is fixed to the end of the connecting block (10).

3. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 2, characterized in that: The adsorption assembly (12) includes a Bernoulli suction cup (20), a connecting column (21) and a second spring (22). The upper wall of the connecting block (10) is provided with a placement hole (23), the placement hole (23) is a blind hole, the inner bottom wall of the placement hole (23) is provided with a spring hole (24), the spring hole (24) is a blind hole, the second spring (22) is arranged on the inner bottom wall of the spring hole (24), the connecting column (21) is slidably arranged in the spring hole (24), the lower end of the connecting column (21) is connected to the second spring (22), the Bernoulli suction cup (20) is slidably arranged in the placement hole (23), and the Bernoulli suction cup (20) is arranged on the upper end of the connecting column (21).

4. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 3, characterized in that: The curable connection component (11) has a main electrical circuit (25), and the main electrical circuit (25) is provided with a plurality of resistors (26). The inner wall of the spring hole (24) is provided with an electrical contact 1 (27) and an electrical contact 2 (28). The electrical contact 1 (27) is electrically connected to the main electrical circuit (25) through a wire, and the electrical contact 2 (28) is electrically connected to the electrorheological fluid (16) in the rotating cavity (18) through a wire. The electrorheological fluid (16) in each rotating cavity (18) is connected in parallel with the resistor (26).

5. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 4, characterized in that: The lifting assembly (6) includes a placement platform (29), a hoist (30), a guide frame (31), a guide wheel (32), a support frame (33), a sliding hoop (34) and a lifting rope (35). The placement platform (29) is arranged at the middle of the outer wall of the support bar (1), the hoist (30) is arranged at the upper wall of the placement platform (29), the guide frame (31) is arranged at the middle of the upper wall of the cross bar (5), the guide wheel (32) is symmetrically arranged on the guide frame (31), the support frame (33) is arranged at the inner side of the support bar (4), the sliding hoop (34) is slidably arranged on the support bar (4), the sliding hoop (34) is fixedly connected to the support frame (33), the lifting rope (35) is wound on the hoist (30), the lifting rope (35) is passed around the two guide wheels (32), and the movable end of the lifting rope (35) is fixed to the upper wall of the support frame (33).

6. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 5, characterized in that: The self-matching adjustment component (7) includes a sliding block (36), a vertical rod (37), a spring (38), a baffle (39) and a locking screw (40). The side wall of the sliding block (36) is provided with a sliding hole (41). The sliding block (36) is sleeved on the side wall of the support frame (33) through the sliding hole (41). The vertical rod (37) is slidably provided on the sliding block (36). The baffle (39) is provided on the upper end of the vertical rod (37). The spring (38) is sleeved on the vertical rod (37). The upper and lower ends of the spring (38) are respectively provided on the baffle (39) and the upper wall of the sliding block (36). The locking screw (40) is provided on the outer side wall of the sliding block (36).

7. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 6, characterized in that: The hinge assembly (9) comprises a hinge frame (42) and a connecting plate (43). The hinge frame (42) is provided at the lower end of the vertical rod (37). The hinge frame (42) and the connecting plate (43) are rotatably connected via a rotating shaft (44). The connecting block (10) is fixedly connected to the connecting plate (43).

8. The belly skin disassembly and assembly equipment for aircraft maintenance according to claim 7, characterized in that: The outer side wall of the support frame (33) is provided with scale lines (19).

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