Disassembling and assembling vehicle for main landing gear of airplane

Abstract

The utility model discloses an aircraft main undercarriage dismounting and mounting vehicle which is characterized in that the bottom of a bottom plate is fixedly connected with a rubber pad, the top of the bottom plate is provided with a mounting groove, the interior of the mounting groove is fixedly connected with a mounting shell, the interior of the mounting shell is slidably connected with a lifting block, the bottom of the lifting block is fixedly connected with universal wheels, and one side of the mounting shell is provided with a second through groove; a first through groove is formed in the lifting block; when the first rotating shaft rotates, the connecting strip can drive the lifting block and the universal wheel to vertically move in the mounting shell, and after the lifting block moves downwards to the maximum extent, the universal wheel is in contact with the ground, so that a worker can conveniently move the disassembling and assembling vehicle, and after the universal wheel retracts into the mounting shell, the universal wheel can be conveniently disassembled and assembled. And the rubber pad at the bottom of the bottom plate is in contact with the ground, so that the friction force between the disassembly and assembly vehicle and the ground can be increased, and the stability of the disassembly and assembly vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of aircraft landing gear disassembly and assembly technology, specifically an aircraft main landing gear disassembly and assembly vehicle. Background Technology

[0002] The main landing gear is a core component that supports the weight of the aircraft, absorbs landing impact, and ensures stability during ground taxiing. It is usually located under the belly of the fuselage or under the wings. Its core functions include cushioning landing loads through shock-absorbing struts, bearing static / dynamic vertical and lateral forces, integrating a braking system to achieve braking, and being equipped with a retraction mechanism to complete flight state storage.

[0003] In the prior art, a main landing gear disassembly and assembly vehicle for aircraft, disclosed in publication number CN210505390U, includes a lifting mechanism comprising a telescopic bracket connected to a base frame and an upper frame, and a power mechanism for controlling the extension and retraction of the telescopic bracket. A mobile platform mounting frame is mounted on the top of the upper frame, with multiple ball bearings on its surface. The mobile platform rests on these ball bearings. A rectangular limiting frame is provided on the outer edge of the mobile platform mounting frame, with a threaded hole on each side of the rectangular limiting frame in the horizontal direction. A lead screw is installed in each threaded hole, with one end of the lead screw extending into the inner ring of the rectangular limiting frame and slidingly connected to the outer edge of the mobile platform in a direction perpendicular to the axis of the lead screw. The other end of the lead screw is provided with a lead screw adjusting handwheel. In this prior art, after the disassembly and assembly vehicle is moved to a designated position, the lifting adjusting handwheel can be rotated to bring the ground contact plate into contact with the ground, providing stable support for the disassembly and assembly vehicle and reducing the possibility of movement during landing gear disassembly and assembly.

[0004] However, the base frame has a ground contact plate at each of the four corners, and each ground contact plate is equipped with a corresponding lifting adjustment handwheel. The staff needs to turn the lifting adjustment handwheel one by one to make all the ground contact plates contact the ground, which is cumbersome in actual operation and reduces work efficiency.

[0005] This invention provides an aircraft main landing gear disassembly and assembly vehicle to solve the above-mentioned problems. Utility Model Content

[0006] This utility model provides an aircraft main landing gear disassembly and assembly vehicle, which aims to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an aircraft main landing gear disassembly and assembly vehicle, including a base plate, a rubber pad fixedly connected to the bottom of the base plate, an installation groove formed on the top of the base plate, an installation shell fixedly connected inside the installation groove, a lifting block slidably connected inside the installation shell, a caster wheel fixedly connected to the bottom of the lifting block, a second through groove formed on one side of the installation shell, a first through groove formed inside the lifting block, an installation plate fixedly connected to the top of the installation shell, a first connecting plate fixedly connected to the bottom of the installation plate, a first installation block and a second installation block fixedly connected to the bottom of the first connecting plate respectively, a first rotating shaft rotatably connected to both the first installation block and the second installation block, and a connecting strip fixedly connected to the side surface of the first rotating shaft.

[0008] As a further optimization, a strip groove is provided on the connecting strip. The end of the connecting strip away from the first rotating shaft extends into the interior of the first through groove through the second through groove. A connecting post is fixedly connected inside the first through groove, and the connecting post passes through the connecting strip through the strip groove.

[0009] As a further optimization, a stabilizing frame is fixedly connected to the bottom of the first connecting plate, and a worm gear is rotatably connected to the stabilizing frame. A servo motor is fixedly connected to the top of the mounting plate. The output end of the servo motor passes through the mounting plate and the first connecting plate in sequence and is fixedly connected to the top of the worm gear. A worm wheel is fixedly connected to the side surface of the first rotating shaft, and the worm wheel meshes with the worm gear.

[0010] As a further optimization, an auxiliary groove is provided inside the mounting shell, which is connected to the inner cavity of the mounting shell. A second rotating shaft is fixedly connected inside the auxiliary groove, and a rotating rod is rotatably connected to the side surface of the second rotating shaft. The side surface of the rotating rod is in contact with one side of the lifting block.

[0011] As a further optimization, a mounting bracket is fixedly connected to the top of the mounting plate, and a working plate is set on the top of the mounting bracket. A first rod is hinged to the top of the mounting bracket, and a second rod is hinged to the bottom of the working plate. A plug rod is inserted into the center of the first rod and the second rod. Rollers are rotatably connected to the end of the first rod away from the mounting bracket and the end of the second rod away from the working plate. Slide rails are fixedly connected to the top of the mounting bracket and the bottom of the working plate, and the side surface of the roller contacts the inner wall of the slide rail.

[0012] As a further optimization, a second connecting plate is fixedly connected to the first rod, and a third connecting plate is fixedly connected to the second rod. A cylinder is hinged to the second connecting plate, and the movable end of the cylinder is hinged to the third connecting plate.

[0013] As a further optimization, a screw is screwed onto the slide rail, and a locking block is rotatably connected to one end of the screw. The side surface of the locking block is in contact with the inner wall of the slide rail, and the inner wall of the locking block is in contact with the side surface of the roller.

[0014] Compared with the prior art, this utility model, through the arrangement of a first rotating shaft, connecting strip, mounting shell, lifting block, and universal wheels, enables the connecting strip to drive the lifting block and universal wheels to move vertically inside the mounting shell when the first rotating shaft rotates. After the lifting block moves down to its maximum extent, the universal wheels will contact the ground, thus facilitating the movement of the disassembly and assembly vehicle by the workers. After the universal wheels retract into the interior of the mounting shell, the rubber pad at the bottom of the base plate will contact the ground, thereby increasing the friction between the disassembly and assembly vehicle and the ground and improving the stability of the disassembly and assembly vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the installation of the universal wheel of this utility model;

[0017] Figure 3 This is a schematic diagram of the installation of the working board of this utility model;

[0018] Figure 4 This is a cross-sectional view of the mounting shell of this utility model;

[0019] Figure 5 for Figure 2 Enlarged view of point A in the image;

[0020] Figure 6 for Figure 3 Enlarged view of point B in the image.

[0021] In the diagram: 1. Base plate; 2. Mounting plate; 3. First connecting plate; 4. First mounting block; 5. Second mounting block; 6. First rotating shaft; 7. Mounting groove; 8. Connecting strip; 9. Mounting shell; 10. Lifting block; 11. Caster wheel; 12. First through groove; 13. Second through groove; 14. Strip groove; 15. Connecting column; 16. Rubber pad; 17. Auxiliary groove; 18. Rotating rod; 19. Stabilizer; 20. Worm gear; 21. Worm wheel; 22. Servo motor; 23. Mounting frame; 24. Working plate; 25. First rod; 26. Second rod; 27. Second connecting plate; 28. Cylinder; 29. ​​Third connecting plate; 30. Slide rail; 31. Roller; 32. Screw; 33. Locking block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 1 , Figure 2 and Figure 5 As shown, an aircraft main landing gear disassembly and assembly vehicle includes a base plate 1. A rubber pad 16 is fixedly connected to the bottom of the base plate 1. An installation groove 7 is provided on the top of the base plate 1. An installation shell 9 is fixedly connected inside the installation groove 7. A lifting block 10 is slidably connected inside the installation shell 9. A caster wheel 11 is fixedly connected to the bottom of the lifting block 10. A second through groove 13 is provided on one side of the installation shell 9. A first through groove 12 is provided inside the lifting block 10. An installation plate 2 is fixedly connected to the top of the installation shell 9. A first connecting plate 3 is fixedly connected to the bottom of the installation plate 2. A first installation block 4 and a second installation block 5 are fixedly connected to the bottom of the first connecting plate 3. A first rotating shaft 6 is rotatably connected to both the first installation block 4 and the second installation block 5. A connecting strip 8 is fixedly connected to the side surface of the first rotating shaft 6.

[0024] The connecting strip 8 has a strip groove 14. The end of the connecting strip 8 away from the first rotating shaft 6 extends into the interior of the first through groove 12 through the second through groove 13. A connecting post 15 is fixedly connected inside the first through groove 12. The connecting post 15 passes through the connecting strip 8 through the strip groove 14.

[0025] A stabilizing frame 19 is fixedly connected to the bottom of the first connecting plate 3. A worm gear 20 is rotatably connected to the stabilizing frame 19. A servo motor 22 is fixedly connected to the top of the mounting plate 2. The output end of the servo motor 22 passes through the mounting plate 2 and the first connecting plate 3 in sequence, and is fixedly connected to the top end of the worm gear 20. A worm wheel 21 is fixedly connected to the side surface of the first rotating shaft 6. The worm wheel 21 meshes with the worm gear 20.

[0026] When the disassembly and assembly vehicle needs to be moved, the servo motor 22 can be activated. When the servo motor 22 is working, its output end can directly drive the worm gear 20 to rotate. The setting of the stabilizer 19 improves the stability of the worm gear 20 when it rotates. When the worm gear 20 rotates, it can drive the first rotating shaft 6 to rotate through the worm wheel 21. The rotating first rotating shaft 6 can pull the lifting block 10 to move vertically through the connecting bar 8. The opening of the first through groove 12 and the second through groove 13 provides the moving space for the connecting bar 8. After the lifting block 10 moves down to the maximum extent, the universal wheel 11 can be moved. The trolley is brought into contact with the ground and can be lifted, causing the base plate 1 to separate from the ground. At this time, the workers can push the trolley to move using the casters 11. After the trolley is moved to the designated position, the servo motor 22 can be started again. When the servo motor 22 drives the worm gear 20 to rotate in the opposite direction, the casters 11 will retract into the mounting housing 9. At this time, the rubber pad 16 at the bottom of the base plate 1 will come into contact with the ground. The rubber pad 16 can increase the friction between the trolley and the ground, thereby improving the stability of the trolley.

[0027] Furthermore, in order to improve the smoothness of movement, such as Figure 1 , Figure 2 and Figure 4 As shown, an auxiliary groove 17 is provided inside the mounting shell 9. The auxiliary groove 17 is connected to the inner cavity of the mounting shell 9. A second rotating shaft is fixedly connected inside the auxiliary groove 17. A rotating rod 18 is rotatably connected to the side surface of the second rotating shaft. The side surface of the rotating rod 18 is in contact with one side of the lifting block 10.

[0028] Multiple second rotating shafts are provided, and each second rotating shaft is equipped with a rotating rod 18. During the process of the first rotating shaft 6 pulling the lifting block 10 to move vertically through the connecting strip 8, some of the rotating rods 18 will come into contact with the lifting block 10. Due to the influence of friction, the rotating rods 18 will assist the lifting block 10 to move by rotating on their own, thereby effectively reducing the friction when the lifting block 10 moves and improving the smoothness of the movement of the lifting block 10.

[0029] Furthermore, in order to improve the stability of the working board 24, such as Figure 1 , Figure 3 and Figure 6 As shown, a mounting bracket 23 is fixedly connected to the top of the mounting plate 2, and a working plate 24 is provided on the top of the mounting bracket 23. A first rod 25 is hinged to the top of the mounting bracket 23, and a second rod 26 is hinged to the bottom of the working plate 24. A plug rod is inserted into the center of the first rod 25 and the second rod 26. Rollers 31 are rotatably connected to the end of the first rod 25 away from the mounting bracket 23 and the end of the second rod 26 away from the working plate 24. Slide rails 30 are fixedly connected to the top of the mounting bracket 23 and the bottom of the working plate 24. The side surface of the roller 31 is in contact with the inner wall of the slide rail 30.

[0030] A second connecting plate 27 is fixedly connected to the first rod 25, and a third connecting plate 29 is fixedly connected to the second rod 26. A cylinder 28 is hinged to the second connecting plate 27, and the movable end of the cylinder 28 is hinged to the third connecting plate 29.

[0031] A screw 32 is screwed onto the slide rail 30. One end of the screw 32 is rotatably connected to a locking block 33. The side surface of the locking block 33 is in contact with the inner wall of the slide rail 30, and the inner wall of the locking block 33 is in contact with the side surface of the roller 31.

[0032] The top of the work plate 24 is equipped with related equipment for disassembling and assembling aircraft landing gear. This part is prior art and is not the focus of this case, so it is not shown in the figure. When the disassembly and assembly vehicle is in use, the height of the work plate 24 can be controlled by the cylinder 28, so as to facilitate the disassembly and assembly of aircraft landing gear by the staff. After the height of the work plate 24 is adjusted, the screw 32 can be rotated. The screw 32 can push the locking block 33 to move, so that the locking block 33 is in contact with the roller 31, thereby restricting the roller 31 and improving the stability of the work plate 24.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An aircraft main landing gear dismounting vehicle comprising a base plate (1), characterized in that: A rubber pad (16) is fixedly connected to the bottom of the base plate (1). An installation groove (7) is provided on the top of the base plate (1). An installation shell (9) is fixedly connected inside the installation groove (7). A lifting block (10) is slidably connected inside the installation shell (9). A caster wheel (11) is fixedly connected to the bottom of the lifting block (10). A second through groove (13) is provided on one side of the installation shell (9). A first through groove (12) is provided inside the lifting block (10). An installation plate (2) is fixedly connected to the top of the installation shell (9). A first connecting plate (3) is fixedly connected to the bottom of the installation plate (2). A first installation block (4) and a second installation block (5) are fixedly connected to the bottom of the first connecting plate (3). A first rotating shaft (6) is rotatably connected to the first installation block (4) and the second installation block (5). A connecting strip (8) is fixedly connected to the side surface of the first rotating shaft (6).

2. An aircraft landing gear removal and installation cart according to claim 1, characterized in that: The connecting strip (8) has a strip groove (14). The end of the connecting strip (8) away from the first rotating shaft (6) extends into the interior of the first through groove (12) through the second through groove (13). A connecting post (15) is fixedly connected inside the first through groove (12). The connecting post (15) passes through the connecting strip (8) through the strip groove (14).

3. An aircraft landing gear removal and installation cart according to claim 1, characterized in that: A stabilizing frame (19) is fixedly connected to the bottom of the first connecting plate (3). A worm gear (20) is rotatably connected to the stabilizing frame (19). A servo motor (22) is fixedly connected to the top of the mounting plate (2). The output end of the servo motor (22) passes through the mounting plate (2) and the first connecting plate (3) in sequence, and is fixedly connected to the top end of the worm gear (20). A worm wheel (21) is fixedly connected to the side surface of the first rotating shaft (6). The worm wheel (21) meshes with the worm gear (20).

4. An aircraft landing gear removal and installation cart according to claim 1, characterized in that: An auxiliary groove (17) is provided inside the mounting shell (9). The auxiliary groove (17) is connected to the inner cavity of the mounting shell (9). A second rotating shaft is fixedly connected inside the auxiliary groove (17). A rotating rod (18) is rotatably connected to the side surface of the second rotating shaft. The side surface of the rotating rod (18) is in contact with one side of the lifting block (10).

5. An aircraft landing gear removal and installation cart according to claim 1, characterized in that: The top of the mounting plate (2) is fixedly connected to a mounting bracket (23), and a working plate (24) is provided on the top of the mounting bracket (23). A first rod (25) is hinged to the top of the mounting bracket (23), and a second rod (26) is hinged to the bottom of the working plate (24). A plug rod is inserted into the center of the first rod (25) and the second rod (26). Rollers (31) are rotatably connected to the end of the first rod (25) away from the mounting bracket (23) and the end of the second rod (26) away from the working plate (24). A slide rail (30) is fixedly connected to the top of the mounting bracket (23) and the bottom of the working plate (24). The side surface of the roller (31) is in contact with the inner wall of the slide rail (30).

6. An aircraft landing gear removal and installation cart according to claim 5, characterised in that: A second connecting plate (27) is fixedly connected to the first rod (25), a third connecting plate (29) is fixedly connected to the second rod (26), a cylinder (28) is hinged to the second connecting plate (27), and the movable end of the cylinder (28) is hinged to the third connecting plate (29).

7. An aircraft landing gear removal and installation cart according to claim 5, characterized in that: A screw (32) is screwed onto the slide rail (30), and a locking block (33) is rotatably connected to one end of the screw (32). The side surface of the locking block (33) is in contact with the inner wall of the slide rail (30), and the inner wall of the locking block (33) is in contact with the side surface of the roller (31).

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