Device for realizing accurate butt joint during installation of tail cabin door of airplane

Abstract

The utility model discloses a device for achieving accurate butt joint during installation of a tail cabin door of an airplane. The device comprises a lifting platform, a jacking frame arranged on the lifting platform, a supporting assembly used for bearing the tail cabin door and a posture adjusting mechanism. The posture adjusting mechanism comprises a lifting fine adjusting component, a first horizontal fine adjusting component and a second horizontal fine adjusting component; the position of the jacking frame in the Z-axis direction is adjusted through the lifting fine adjustment component; the supporting assembly is arranged above the jacking frame, the position of the supporting assembly in the X-axis direction is adjusted through the first horizontal fine adjustment component, and the position of the supporting assembly in the Y-axis direction is adjusted through the second horizontal fine adjustment component. Coarse adjustment of the position in the vertical direction is achieved by arranging the lifting platform, and fine adjustment of the position of the jacking frame in the vertical direction is achieved by arranging the lifting fine adjustment component. Then a first horizontal fine adjustment part and a second horizontal fine adjustment part are arranged to carry out fine adjustment on the positions of the supporting assembly in the X-axis direction and the Y-axis direction; and finally, accurate alignment of the tail cabin door and the fuselage mounting interface is realized.

Description

Technical Field

[0001] This utility model relates to the field of aviation manufacturing technology, and in particular to a device for achieving precise docking during the installation of aircraft tail doors. Background Technology

[0002] Currently, when installing aircraft tail doors, a crane or electric hoist is used to place the tail door on the installation fixture. Then, the tail door is aligned with the fuselage mounting base, ensuring that the tail door connecting pin holes are coaxially aligned with the fuselage connecting base pin holes before proceeding with pin installation and assembly of other accessories. However, the tail door weighs more than 240 kg, and the existing installation fixture cannot be precisely adjusted manually. Utility Model Content

[0003] This invention provides a device for achieving precise alignment during the installation of aircraft tail doors, thereby solving the aforementioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] A device for achieving precise docking during the installation of an aircraft tail door includes: a lifting platform, a lifting frame mounted on the lifting platform, a support assembly for supporting the aircraft tail door, and an attitude adjustment mechanism.

[0006] The attitude adjustment mechanism includes: a lifting fine adjustment component, a first horizontal fine adjustment component, and a second horizontal fine adjustment component; the lifting fine adjustment component adjusts the position of the lifting frame along the Z-axis; the support component is set above the lifting frame, and the first horizontal fine adjustment component adjusts the position of the support component along the X-axis, and the second horizontal fine adjustment component adjusts the position of the support component along the Y-axis.

[0007] Preferably, the lifting and fine-tuning component includes a lifting platform and a drive assembly; the lifting platform is mounted on the lifting platform, and the drive end of the lifting platform is connected to the lifting frame; the drive assembly drives the lifting platform to move.

[0008] Preferably, the drive assembly includes: a telescopic universal joint, a second rotating support, and a manual adjustment shaft; the second rotating support is mounted on the lifting frame and supports the rotation of the manual adjustment shaft; one end of the telescopic universal joint is connected to the input end of the elevator, and the other end is connected to the manual adjustment shaft.

[0009] Preferably, the elevator is provided in two sets along the X-axis direction, and the drive assembly further includes: a coupling, a connecting rod, and a first rotating support; one end of the connecting rod is connected to the output end of the elevator connected to the telescopic universal joint through the coupling, and the other end is connected to the input end of the elevator away from the telescopic universal joint through the coupling; the first rotating support is provided on the lifting platform and supports the rotation of the connecting rod.

[0010] Preferably, the first horizontal fine-tuning component includes an X-axis lead screw feed assembly; the X-axis lead screw feed assembly includes: an X-axis lead screw rotatably mounted on the lifting frame, an X-axis nut that is helically driven with the X-axis lead screw, an X-axis push block fixed on the X-axis nut, and an X-axis handwheel mounted at the end of the X-axis lead screw; the X-axis handwheel drives the X-axis lead screw to rotate, thereby driving the X-axis nut and the X-axis push block to move synchronously, and then the X-axis push block drives the support assembly to move along the X-axis direction.

[0011] Preferably, the second horizontal fine-tuning component includes a Y-axis lead screw feed assembly; the Y-axis lead screw feed assembly includes: a Y-axis lead screw rotatably mounted on the lifting frame, a Y-axis lead screw nut that is helically driven with the Y-axis lead screw, a Y-axis push block mounted on the Y-axis lead screw nut, and a Y-axis handwheel mounted at the end of the Y-axis lead screw nut; the Y-axis handwheel drives the Y-axis lead screw to rotate, thereby driving the Y-axis lead screw nut and the Y-axis push block to move synchronously, and then the Y-axis push block drives the support assembly to move along the Y-axis direction.

[0012] Preferably, the second horizontal fine-tuning component includes two sets of Y-axis lead screw feed assemblies arranged along the Y-axis direction; the Y-axis lead screw feed assembly further includes a connecting pin, and the Y-axis push block has an elongated hole along the X-axis direction, through which the connecting pin passes and connects to the Y-axis lead screw nut; the Y-axis push block is fixedly connected to the support assembly.

[0013] Preferably, the support assembly includes: a support frame, a conforming block that fits the aircraft tail door, and a limiting plate that defines the position of the aircraft tail door; the conforming block and the limiting plate are fixed on the side of the support frame away from the lifting frame, and the first horizontal fine-tuning component and the second horizontal fine-tuning component drive the support frame to move.

[0014] Preferably, a sliding support assembly is provided between the lifting frame and the support frame to provide sliding support for the movement of the support frame.

[0015] Preferably, the slide assembly includes: a base, a plurality of balls, a pressure cap, a connecting block base plate, a connecting block, and a cover plate; the base is fixedly mounted on the lifting frame, and the pressure cap is fixedly connected to the base; the base has a plurality of lower hemispherical grooves, and the pressure cap has a plurality of upper hemispherical grooves, the bottom of the upper hemispherical grooves having a first clearance hole, the lower hemispherical grooves, the upper hemispherical grooves, and the first clearance hole forming a ball socket, the balls are placed on the ball socket and protrude from the pressure cap through the first clearance hole; the connecting block base plate is placed on the balls and is located above the pressure cap, the connecting block is fixedly connected to the connecting block base plate and is fixedly connected to the support frame; the cover plate is located above the connecting block base plate and is fixedly connected to the base, the cover plate has a second clearance hole, and the connecting block protrudes from the cover plate through the second clearance hole.

[0016] Beneficial effects:

[0017] The device disclosed in this application for achieving precise alignment during the installation of an aircraft tail door achieves coarse vertical adjustment by setting up a lifting platform, and fine vertical adjustment by setting up a lifting fine adjustment component; then, it finely adjusts the position of the support component in the X-axis and Y-axis directions by setting up a first horizontal fine adjustment component and a second horizontal fine adjustment component; finally, it achieves precise alignment between the tail door and the fuselage installation interface. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a device disclosed in this utility model that enables precise docking during the installation of an aircraft tail door;

[0020] Figure 2 This is a front view of a device disclosed in this utility model that enables precise docking during the installation of an aircraft tail door;

[0021] Figure 3 This is a schematic diagram of the structure behind the hidden lifting platform of the device disclosed in this utility model for achieving precise docking during the installation of the aircraft tail door;

[0022] Figure 4 This utility model discloses a structural schematic diagram of a lifting frame, sliding block assembly, and attitude adjustment mechanism assembly for a device that enables precise docking during the installation of an aircraft tail door.

[0023] Figure 5 This is a schematic diagram of the structure of a support component for a device that enables precise docking during the installation of an aircraft tail door, as disclosed in this utility model.

[0024] Figure 6 for Figure 4 A magnified view of part A in the image;

[0025] Figure 7 for Figure 4 A magnified view of part B in the image;

[0026] Figure 8 for Figure 4 A magnified view of part C;

[0027] Figure 9 This is a schematic diagram of the slide assembly of a device for achieving precise docking during the installation of an aircraft tail door, as disclosed in this utility model.

[0028] Figure 10 This is a schematic diagram of the assembly of a sliding block assembly for a device that enables precise docking during the installation of an aircraft tail door, as disclosed in this utility model.

[0029] 11. Lifting platform; 121. Coupling; 122. Connecting rod; 123. First rotating support; 124. Telescopic universal joint; 125. Second rotating support; 126. Manually adjusting shaft; 13. Z-axis guide assembly; 14. Mounting plate; 151. Lower clamping plate; 152. Upper clamping plate;

[0030] 21. X-axis lead screw; 22. X-axis lead nut; 23. X-axis push block; 24. X-axis handwheel; 25. X-axis mounting base plate; 26. X-axis bearing seat; 27. Buffer block;

[0031] 31. Y-axis lead screw; 32. Y-axis lead screw nut; 33. Y-axis push block; 331. Elongated hole; 34. Y-axis handwheel; 35. Connecting pin; 36. Y-axis mounting base plate; 37. Y-axis bearing seat;

[0032] 4. Lifting platform;

[0033] 5. Lifting frame; 51. Rectangular support rod; 52. Horizontal support rod; 53. Short support rod; 54. Diagonal support rod;

[0034] 61. Support frame; 611. Attached block mounting plate; 612. Trapezoidal frame; 613. Cantilever rod; 62. Attached block; 63. Limiting plate;

[0035] 7. Slide assembly; 71. Base; 72. Ball bearing; 73. Pressure cap; 74. Connecting block base plate; 75. Connecting block; 76. Cover plate;

[0036] 8. Locking device. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] A device for achieving precise alignment during the installation of aircraft tail doors, combined with Figures 1-10As shown, the system includes: a lifting platform 4, a lifting frame 5 mounted on the lifting platform 4, a support assembly for supporting the aircraft's tail door, and an attitude adjustment mechanism. The attitude adjustment mechanism includes: a lifting fine-tuning component, a first horizontal fine-tuning component, and a second horizontal fine-tuning component; the vertical direction is defined as the Z-axis, the length direction of the lifting platform 4 as the X-axis, and the width direction of the lifting platform 4 as the Y-axis. The lifting fine-tuning component adjusts the position of the lifting frame 5 along the Z-axis. The support assembly is mounted above the lifting frame 5, and its position along the X-axis is adjusted by the first horizontal fine-tuning component, while its position along the Y-axis is adjusted by the second horizontal fine-tuning component. This application achieves coarse adjustment of the vertical position of the lifting frame 5 by using the lifting platform 4, fine adjustment of the vertical position of the lifting frame 5 by using the lifting fine-tuning component, and fine adjustment of the position of the support assembly along the X-axis and Y-axis by using the first and second horizontal fine-tuning components; ultimately achieving precise alignment between the tail door and the fuselage mounting interface.

[0039] Specifically, the lifting platform 4 uses an electric hydraulic lifting vehicle to achieve coarse positioning of the height of the lifting frame 5 along the Z-axis, and it can be moved and locked for easy transfer. The electric hydraulic lifting vehicle is existing technology and will not be described in detail here.

[0040] Preferably, the lifting and fine-tuning component includes a lifting machine 11 and a drive assembly; the lifting machine 11 is mounted on the lifting platform 4, and the drive end of the lifting machine 11 is connected to the lifting frame 5; the drive assembly drives the lifting machine 11 to move, and the drive end of the lifting machine 11 drives the lifting frame 5 to move up and down, so as to achieve precise fine-tuning of the position in the vertical direction.

[0041] Preferably, the drive assembly includes: a telescopic universal joint 124, a second rotating support 125, and a manual adjustment shaft 126; the second rotating support 125 is mounted on the lifting frame 5 and supports the rotation of the manual adjustment shaft 126; one end of the telescopic universal joint 124 is connected to the input end of the lifting platform 11, and the other end is connected to the manual adjustment shaft 126. A ratchet wrench can be used to rotate the manual adjustment shaft 126 for fine-tuning control of the lifting process. During lifting, the distance and angle between the manual adjustment shaft 126 and the lifting platform 11 will change, which is compensated for by the telescopic universal joint 124.

[0042] Specifically, the end of the manual adjustment shaft 126 extends out of the edge of the lifting frame 5. By arranging the manual adjustment shaft 126 on the lifting frame 5, it is easier to operate and avoids the tailgate obstructing the operation.

[0043] Specifically, the lifting and fine-tuning components also include a Z-axis guide assembly 13, which guides the movement of the lifting frame 5 along the Z-axis direction.

[0044] Preferably, two sets of elevators 11 are arranged along the X-axis to stably support the lifting and lowering of the tail hatch at two support points along the length of the tail hatch. The drive assembly also includes: a coupling 121, a connecting rod 122, and a first rotating support 123. One end of the connecting rod 122 is connected to the output end of the elevator 11, which is connected to the telescopic universal joint 124, via the coupling 121, and the other end is connected to the input end of the elevator 11, which is away from the telescopic universal joint 124, via the coupling 121. The first rotating support 123 is arranged on the lifting platform 4 and supports the rotation of the connecting rod 122, thereby realizing the synchronous lifting and lowering of the two elevators 11.

[0045] Specifically, the lifting platform 11 adopts a trapezoidal screw jack with a self-locking function to prevent falls. Both the first rotating support 123 and the second rotating support 125 use seated bearings, and the connecting rod 122 passes through the seated bearings.

[0046] Specifically, the lifting and fine-tuning components also include a mounting plate 14, which is fixedly connected to the lifting platform 4 by screws or bolts. The housing of the lifting machine 11 is fixedly mounted on the center of the upper surface of the mounting plate 14 by screws. The drive end of the lifting machine 11 (i.e., the top of the lead screw) is detachably fixedly connected to the bottom surface of the lifting frame 5.

[0047] Specifically, the lifting frame 5 adopts a frame structure, which includes: two parallel rectangular support rods 51, horizontal support rods 52 welded and fixed between the two rectangular support rods 51 and arranged in parallel, short support rods 53 welded and fixed between two adjacent horizontal support rods 52, and diagonal support rods 54 welded and fixed between the short support rods 53 and the rectangular support rods 51. The number of diagonal support rods 54 can be designed according to actual needs.

[0048] Specifically, the drive end of the elevator 11 is fixed to the lower surface of the lower clamping plate 151 via a connecting flange, and the upper surface of the lower clamping plate 151 abuts against the lower surface of the horizontal support rod 52; the upper surface of the horizontal support rod 52 is provided with an upper clamping plate 152, and the upper clamping plate 152 and the lower clamping plate 151 are fixed by bolts to clamp the horizontal support rod 52.

[0049] Specifically, there are two sets of Z-axis guide assemblies 13, located at both ends of the elevator 11 along the Y-axis direction. The Z-axis guide assembly 13 includes a sleeve and a guide rod. The sleeve is fixedly connected to the mounting plate 14 by screws. The lower end of the guide rod passes through the sleeve, and the top end is fixed to the lower surface of the connecting plate by a connecting flange. The upper surface of the connecting plate is welded and fixed to the lower surface of the horizontal support rod 52.

[0050] Preferably, the first horizontal fine-tuning component includes an X-axis lead screw feed assembly; the X-axis lead screw feed assembly includes: an X-axis lead screw 21 rotatably mounted on the lifting frame 5, an X-axis lead screw nut 22 that is helically driven with the X-axis lead screw 21, an X-axis push block 23 fixed on the X-axis lead screw nut 22, and an X-axis handwheel 24 mounted at the end of the X-axis lead screw 21; the X-axis handwheel 24 drives the X-axis lead screw 21 to rotate, thereby driving the X-axis lead screw nut 22 and the X-axis push block 23 to move synchronously, and then the X-axis push block 23 drives the support assembly to move along the X-axis direction.

[0051] Specifically, the first leveling component includes two sets of X-axis lead screw feed assemblies arranged along the Y-axis to reduce the rotation around the Z-axis when the tailgate is adjusted along the X-axis. The X-axis lead screw feed assembly also includes an X-axis mounting base plate 25, X-axis bearing seats 26, and an X-axis support bearing. The X-axis mounting base plate 25 is fixed to the upper surface of the lifting frame 5 by welding. In this embodiment, one end of the X-axis mounting base plate 25 is welded to the horizontal support rod 52, and the other end is welded to the diagonal support rod 54. The two X-axis bearing seats 26 are connected to the upper surface of the X-axis mounting base plate 25 by screws, and the X-axis bearing seats 26 are equipped with X-axis support bearings to support the X-axis lead screw 21.

[0052] Preferably, the second horizontal fine-tuning component includes a Y-axis lead screw feed assembly; the Y-axis lead screw feed assembly includes: a Y-axis lead screw 31 rotatably mounted on the lifting frame 5, a Y-axis lead screw nut 32 that is helically driven with the Y-axis lead screw 31, a Y-axis push block 33 mounted on the Y-axis lead screw nut 32, and a Y-axis handwheel 34 mounted at the end of the Y-axis lead screw nut 32; the Y-axis handwheel 34 drives the Y-axis lead screw 31 to rotate, thereby driving the Y-axis lead screw nut 32 and the Y-axis push block 33 to move synchronously, and then the Y-axis push block 33 drives the support assembly to move along the Y-axis direction.

[0053] Preferably, the second horizontal fine-tuning component includes two sets of Y-axis lead screw feed assemblies arranged along the Y-axis direction; the Y-axis lead screw feed assembly further includes a connecting pin 35, and the Y-axis push block 33 has an elongated hole 331 along the X-axis direction. The connecting pin 35 passes through the elongated hole 331 and connects to the Y-axis nut 32; the Y-axis push block 33 is fixedly connected to the support assembly. When adjusting along the X-axis direction, the elongated hole 331 ensures that the support assembly is movable; and by using the two sets of Y-axis lead screw feed assemblies to make different displacements, the movement and rotation of the Y-axis push block 33 relative to the connecting pin 35 can realize the swing around the Z-axis direction when the stern door is docked, correcting the torsion of the stern door.

[0054] Specifically, the Y-axis lead screw feed assembly further includes: a Y-axis mounting base plate 36, Y-axis bearing seats 37, and a Y-axis support bearing. The Y-axis mounting base plate 36 is fixed to the upper surface of the lifting frame 5 by welding. In this embodiment, one end of the Y-axis mounting base plate 36 is welded to the horizontal support rod 52, and the other end is welded to the rectangular support rod 51. Two Y-axis bearing seats 37 are connected to the upper surface of the Y-axis mounting base plate 36 by screws, and the Y-axis bearing seats 37 are equipped with Y-axis support bearings to support the Y-axis lead screw 31.

[0055] Specifically, both the X-axis mounting base 25 and the Y-axis mounting base 36 are equipped with locking devices 8. In this embodiment, the locking device 8 adopts a locking device mounting base and an adjustable handle. After tightening the adjustable handle, it abuts against the lead screw to prevent it from rotating.

[0056] Preferably, the support assembly includes: a support frame 61, an attachment block 62 that conforms to the aircraft tail door, and a limiting plate 63 that defines the position of the aircraft tail door; the attachment block 62 and the limiting plate 63 are fixed on the side of the support frame 61 away from the lifting frame 5, and the first horizontal fine adjustment component and the second horizontal fine adjustment component drive the support frame 61 to move.

[0057] Specifically, the support frame 61 includes: a shaped block mounting plate 611, a trapezoidal frame 612, and a cantilever rod 613. Two shaped block mounting plates 611 are arranged in parallel, and the two ends of the trapezoidal frame 612 are respectively connected to the two shaped block mounting plates 611 by screws. Two cantilever rods 613 are arranged in parallel, with one end connected by a screw to the shaped block mounting plate 611 on the side corresponding to the X-axis lead screw feed assembly, and the other end extending freely along the Y-axis away from the trapezoidal frame 612. The end of the cantilever rod 613 is connected to a limiting plate 63 by screws.

[0058] Specifically, the X-axis push block 23 has a through groove along the Y-axis, and buffer blocks 27 are fixed on both sides of the through groove. The attached block mounting plate 611 corresponding to one side of the X-axis lead screw feed assembly is placed in the through groove, and the Y-axis push block 33 is connected to the trapezoidal frame 612 by screws. The X-axis lead screw 21 feeds, causing the buffer block 27 on one side to abut against the attached block mounting plate 611 and thus push the attached block mounting plate 611 forward; the X-axis lead screw 21 retracts, causing the buffer block 27 on the other side to abut against the attached block mounting plate 611 and thus push the attached block mounting plate 611 backward.

[0059] Preferably, a sliding support assembly 7 is further provided between the lifting frame 5 and the supporting frame 61 to provide sliding support for the movement of the supporting frame 61. In this embodiment, sliding support assemblies 7 are provided at all four corners of the lifting frame 5 for sliding support.

[0060] Preferably, the slide assembly 7 includes: a base 71, a plurality of balls 72, a pressure cap 73, a connecting block base plate 74, a connecting block 75, and a cover plate 76; the base 71 is fixedly mounted on the lifting frame 5, and the pressure cap 73 is fixedly connected to the base 71; the base 71 has a plurality of lower hemispherical grooves, and the pressure cap 73 has a plurality of upper hemispherical grooves, the bottom of the upper hemispherical grooves has a first clearance hole, the lower hemispherical grooves, the upper hemispherical grooves and the first clearance hole form a ball socket, the balls 72 are placed on the ball socket and protrude from the pressure cap 73 through the first clearance hole; the connecting block base plate 74 is placed on the balls 72 and is located above the pressure cap 73, the connecting block 75 is fixedly connected to the connecting block base plate 74 and is fixedly connected to the support frame 61; the cover plate 76 is located above the connecting block base plate 74 and is fixedly connected to the base 71, the cover plate 76 has a second clearance hole, and the connecting block 75 protrudes from the second clearance hole through the cover plate 76. The cover plate 76 is separated from the bottom plate 74 of the connecting block, ensuring that the bottom plate 74 of the connecting block can slide. The rolling of the ball bearings 72 allows the bottom plate 74 of the connecting block to move smoothly, thereby enabling the connecting block 75 to provide support and sliding for the support frame 61.

[0061] Specifically, several lower hemispherical grooves on the base 71 are arranged in a rectangular array. The pressure cap 73 is connected to the base 71 by screws. The lower and upper hemispherical grooves restrict the position of the ball 72, but allow the ball 72 to protrude from the pressure cap 73 and be higher than the upper surface of the pressure cap 73. The rolling of the ball 72 in the ball socket ensures the smooth sliding of the connecting block base plate 74. The bottom of the connecting block 75 is connected to the middle of the upper surface of the connecting block base plate 74 by screws, and the top passes through the second clearance hole of the cover plate 76 and is connected to the bottom surface of the auxiliary block mounting plate 611, ensuring the stable and smooth sliding of the support frame 61.

[0062] The working principle of the device in this application is as follows:

[0063] The lifting platform 4 is lowered to the initial position, and the tail hatch is placed on the attached block 62 so that the lower surface of the tail hatch is completely in contact with the attached block 62; then the placement position of the tail hatch is determined by the limiting plate 63.

[0064] Z-axis fine-tuning: Use a ratchet wrench to rotate the manual adjustment shaft 126, which drives the two lifting platforms 11 to rise and fall synchronously via the telescopic universal coupling 124 and connecting rod 122. When the fine-tuning range is large, a power drill can be used in conjunction with a socket to rotate the manual adjustment shaft 126, which can greatly improve operating efficiency.

[0065] X-axis fine adjustment: Simultaneously adjust two sets of X-axis lead screw feed components, and X-axis push block 23 drives support frame 61 to move, thereby enabling the support component to move along the X-axis to the required docking position.

[0066] Y-axis fine-tuning: Adjusting the two sets of lead screw feed components, the Y-axis push block 33 drives the support frame 61 to move, thereby moving the support component to the required docking position along the Y-axis. When the stern door is tortuous, the two sets of lead screw feed components are adjusted to different feed amounts. Utilizing the guiding effect of the elongated hole 331, the Y-axis push block 33 and the support frame 61 rotate together around the connecting pin 35, correcting the stern door's wobble around the Z-axis by the required angle.

[0067] After adjusting the position, use a locking device to lock it in place.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A device for achieving precise alignment during the installation of an aircraft tail door, characterized in that, include: Lifting platform (4), lifting frame (5) mounted on the lifting platform (4), support assembly and attitude adjustment mechanism for supporting the tail door of the aircraft; The posture adjustment mechanism includes: a lifting fine adjustment component, a first horizontal fine adjustment component, and a second horizontal fine adjustment component; the lifting fine adjustment component adjusts the position of the lifting frame (5) along the Z-axis direction; the support component is disposed above the lifting frame (5), the first horizontal fine adjustment component adjusts the position of the support component along the X-axis direction, and the second horizontal fine adjustment component adjusts the position of the support component along the Y-axis direction.

2. The device for precise docking of the tail cabin door installation of an aircraft according to claim 1, characterized in that, The lifting and fine-tuning component includes a lifting machine (11) and a drive assembly; the lifting machine (11) is mounted on the lifting platform (4), and the drive end of the lifting machine (11) is connected to the lifting frame (5); the drive assembly drives the lifting machine (11) to move.

3. The device for precise docking of the tail cabin door installation of an aircraft according to claim 2, characterized in that, The drive assembly includes: a telescopic universal joint (124), a second rotating support (125), and a manual adjustment shaft (126); the second rotating support (125) is mounted on the lifting frame (5) and supports the rotation of the manual adjustment shaft (126); one end of the telescopic universal joint (124) is connected to the input end of the elevator (11), and the other end is connected to the manual adjustment shaft (126).

4. The device for precise docking of the tail cabin door installation of an aircraft according to claim 2, characterized in that, The elevator (11) is arranged in two sets along the X-axis direction. The drive assembly also includes: a coupling (121), a connecting rod (122), and a first rotating support (123). One end of the connecting rod (122) is connected to the output end of the elevator (11) connected to the telescopic universal joint (124) through the coupling (121), and the other end is connected to the input end of the elevator (11) away from the telescopic universal joint (124) through the coupling (121). The first rotating support (123) is set on the lifting platform (4) and supports the rotation of the connecting rod (122).

5. The device of claim 1, wherein, The first horizontal fine-tuning component includes an X-axis lead screw feed assembly; the X-axis lead screw feed assembly includes: an X-axis lead screw (21) rotatably mounted on the lifting frame (5), an X-axis lead screw nut (22) helically driven by the X-axis lead screw (21), an X-axis push block (23) fixed on the X-axis lead screw nut (22), and an X-axis handwheel (24) mounted at the end of the X-axis lead screw (21); the X-axis handwheel (24) drives the X-axis lead screw (21) to rotate, thereby the X-axis lead screw (21) drives the X-axis lead screw nut (22) and the X-axis push block (23) to move synchronously, and then the X-axis push block (23) drives the support assembly to move along the X-axis direction.

6. The device of claim 1, wherein, The second horizontal fine-tuning component includes a Y-axis lead screw feed assembly; the Y-axis lead screw feed assembly includes: a Y-axis lead screw (31) rotatably mounted on the lifting frame (5), a Y-axis lead screw nut (32) that is helically driven with the Y-axis lead screw (31), a Y-axis push block (33) mounted on the Y-axis lead screw nut (32), and a Y-axis handwheel (34) mounted at the end of the Y-axis lead screw nut (32); the Y-axis handwheel (34) drives the Y-axis lead screw (31) to rotate, thereby the Y-axis lead screw (31) drives the Y-axis lead screw nut (32) and the Y-axis push block (33) to move synchronously, and then the Y-axis push block (33) drives the support assembly to move along the Y-axis direction.

7. The device for precise docking of the tail compartment door installation of the aircraft according to claim 6, characterized in that, The second horizontal fine-tuning component includes two sets of Y-axis lead screw feed assemblies arranged along the Y-axis direction; the Y-axis lead screw feed assembly also includes a connecting pin (35), the Y-axis push block (33) is provided with an elongated hole (331) along the X-axis direction, the connecting pin (35) passes through the elongated hole (331) and is connected to the Y-axis lead screw nut (32); the Y-axis push block (33) is fixedly connected to the support assembly.

8. The device of claim 1, wherein, The support assembly includes: a support frame (61), a conforming block (62) that fits the tail door of the aircraft, and a limiting plate (63) that defines the position of the tail door of the aircraft; the conforming block (62) and the limiting plate (63) are fixed on the side of the support frame (61) away from the lifting frame (5), and the first horizontal fine adjustment component and the second horizontal fine adjustment component drive the support frame (61) to move.

9. The device for precise docking of the tail cabin door installation of an aircraft according to claim 8, characterized in that, A sliding support assembly (7) is also provided between the lifting frame (5) and the support frame (61) to provide sliding support for the movement of the support frame (61).

10. The device for precise docking of the tail cabin door installation of an aircraft according to claim 9, characterized in that, The slide assembly (7) includes: a base (71), a plurality of balls (72), a pressure cap (73), a connecting block base plate (74), a connecting block (75), and a cover plate (76); the base (71) is fixedly mounted on the lifting frame (5), and the pressure cap (73) is fixedly connected to the base (71); the base (71) has a plurality of lower hemispherical grooves, and the pressure cap (73) has a plurality of upper hemispherical grooves, and the bottom of the upper hemispherical grooves has a first clearance hole, the lower hemispherical grooves, the upper hemispherical grooves and the first clearance hole form The ball socket, the ball (72) is placed on the ball socket and the cover (73) protrudes from the first clearance hole; the connecting block base plate (74) is placed on the ball (72) and is located above the cover (73); the connecting block (75) is fixedly connected to the connecting block base plate (74) and fixedly connected to the support frame (61); the cover plate (76) is located above the connecting block base plate (74) and is fixedly connected to the base (71); the cover plate (76) is provided with a second clearance hole, and the connecting block (75) protrudes from the second clearance hole of the cover plate (76).

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