A new type of main landing gear installation vehicle

Abstract

The present invention discloses a novel main landing gear installation vehicle, which includes an AGV. The AGV body is provided with first and second support arms arranged oppositely and spaced apart. The first and second support arms are respectively slidably arranged on the AGV body along a vertical direction. The first support arm is connected to a first drive device, and the second support arm is connected to a second drive device. A fastener is connected between the first and second support arms. A horizontal electric cylinder is provided below the first and second support arms. The cylinder body of the horizontal electric cylinder is hinged to the AGV body. An oblique electric cylinder is provided above the horizontal electric cylinder. One end of the oblique electric cylinder is hinged to the AGV body above the horizontal electric cylinder, and the other end of the oblique electric cylinder is hinged to the cylinder body of the horizontal electric cylinder. Two blocking rollers are detachably connected to the piston rod of the horizontal electric cylinder. The purpose is to provide a novel main landing gear installation vehicle that can freely adjust the posture of the main landing gear to facilitate installation.

Description

Technical Field

[0001] The present invention relates to the field of aircraft equipment installation, in particular to an installation vehicle for installing aircraft main landing gear. Background Art

[0002] In the prior art, the installation of an aircraft's main landing gear typically involves manual labor combined with the use of labor-saving tools. This requires the coordinated efforts of multiple personnel, significantly increasing labor costs and resulting in low installation efficiency. Furthermore, due to the heavy weight of the main landing gear, accidents are prone to occur during installation, resulting in poor safety. To overcome these drawbacks, prior art installation vehicles have also been used for main landing gear installation. However, these vehicles cannot freely adjust the posture of the main landing gear, hindering installation operations. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a new main landing gear installation vehicle, which can freely adjust the posture of the main landing gear to facilitate installation.

[0004] The new main landing gear installation vehicle of the present invention includes an AGV, wherein a first support arm and a second support arm are arranged oppositely and spaced apart on the body of the AGV, the first support arm and the second support arm are respectively slidably arranged on the body of the AGV along a vertical direction, the first support arm is connected to a first driving device, the first driving device can drive the first support arm to slide along the body of the AGV, the second support arm is connected to a second driving device, the second driving device can drive the second support arm to slide along the body of the AGV, a fastener is connected between the first support arm and the second support arm, the A horizontal electric cylinder is provided below the first support arm and the second support arm, and the cylinder body of the horizontal electric cylinder is hinged to the body of the AGV. A diagonal electric cylinder is provided above the horizontal electric cylinder, and one end of the diagonal electric cylinder is hinged to the AGV body above the horizontal electric cylinder, and the other end of the diagonal electric cylinder is hinged to the cylinder body of the horizontal electric cylinder. The diagonal electric cylinder can push and pull the horizontal electric cylinder to rotate in the up and down directions, and two blocking rollers are detachably connected to the piston rod of the horizontal electric cylinder. The two blocking rollers are arranged horizontally and are respectively located on both sides of the piston rod of the horizontal electric cylinder.

[0005] The present invention provides a new main landing gear installation vehicle, wherein the AGV body is provided with a first slide rail arranged vertically, the first support arm is fixedly provided with a first slider, the first slider is slidably installed on the first slide rail, the first driving device includes a first motor and a first screw, the first screw is arranged vertically, the first motor is provided on the AGV body, the output shaft of the first motor is fixedly connected to the lower end of the first screw, and the first support arm is threadedly connected to the first screw.

[0006] The present invention provides a new main landing gear mounting vehicle, wherein the body of the AGV is provided with a second slide rail arranged vertically, the second support arm is fixedly provided with a second slider, the second slider is slidably mounted on the second slide rail, the second driving device includes a second motor and a second screw, the second screw is arranged vertically, the second motor is provided on the body of the AGV, the output shaft of the second motor is fixedly connected to the lower end of the second screw, and the second support arm is threadedly connected to the second screw.

[0007] The present invention provides a new main landing gear installation vehicle, wherein the first support arm is L-shaped, the middle part of the first support arm is higher than the two ends, the second support arm is also L-shaped, the middle part of the second support arm is also higher than the two ends, one end of the first support arm is fixedly provided with the first slider, one end of the second support arm is fixedly provided with the second slider, and a fastener is connected between the other end of the first support arm and the other end of the second support arm, and the fastener is a pin.

[0008] The new main landing gear installation vehicle of the present invention, wherein the cylinder body of the oblique electric cylinder is hinged on the AGV body above the horizontal electric cylinder, the piston rod of the oblique electric cylinder is hinged on the cylinder body of the horizontal electric cylinder, and the two blocking rollers are respectively connected to the piston rod of the horizontal electric cylinder by threaded connection.

[0009] The present invention provides a new main landing gear mounting vehicle, wherein the first motor and the first slide rail are arranged on the body of the AGV through a first bracket, the first bracket includes a first top plate, a first bottom plate and a first vertical plate, the first vertical plate is connected between the first top plate and the first bottom plate, a first accommodating groove is provided on the body of the AGV, the first bracket is arranged in the first accommodating groove, the first motor is fixed on the first bottom plate, the upper end of the first screw is rotatably mounted on the first top plate through a bearing, and the first slide rail is vertically fixed on the first vertical plate.

[0010] The present invention provides a new main landing gear mounting vehicle, wherein the second motor and the second slide rail are arranged on the body of the AGV through a second bracket, the second bracket includes a second top plate, a second bottom plate and a second vertical plate, the second vertical plate is connected between the second top plate and the second bottom plate, a second accommodating groove is provided on the body of the AGV, the second bracket is arranged in the second accommodating groove, the second motor is fixed on the second bottom plate, the upper end of the second screw is rotatably mounted on the second top plate through a bearing, and the second slide rail is vertically fixed on the second vertical plate.

[0011] The new main landing gear installation vehicle of the present invention, wherein a accommodating cavity is provided in the body of the AGV, the accommodating cavity is located below the first accommodating slot and the second accommodating slot, the accommodating cavity is communicated with the first accommodating slot and the second accommodating slot, a support plate is provided in the accommodating cavity, the first bracket and the second bracket are both provided on the support plate, the first bottom plate of the first bracket is fixedly provided on one end of the upper surface of the support plate, the second bottom plate of the second bracket is fixedly provided on the other end of the upper surface of the support plate, the middle position of the lower surface of the support plate is connected to the upper surface of the carrying plate through a slewing bearing, a base is provided below the carrying plate, a third slide rail is provided on the upper surface of the base along the front and rear direction of the AGV body, a third slider is fixedly provided on the lower surface of the carrying plate, the third slider is slidably installed on the third slide rail, and a third lead screw is rotatably installed on the upper surface of the base. The third lead screw and the third slide rail are arranged in the same direction, and the third lead screw is driven to rotate by the third motor, and the third lead screw is threadedly connected to the first nut, and the first nut is fixedly connected to the lower surface of the bearing plate, and a fourth slide rail is provided below the base, and the fourth slide rail is fixedly arranged on the AGV body at the bottom of the accommodating cavity, and the fourth slide rail is arranged perpendicular to the third slide rail, and the base is slidably installed on the fourth slide rail, and the AGV body at the bottom of the accommodating cavity is rotatably installed, and the fourth lead screw is located below the base, and the fourth lead screw and the fourth slide rail have the same arrangement direction, and the fourth lead screw is driven to rotate by the fourth motor, and the fourth lead screw is threadedly connected to the second nut, and the second nut is fixedly connected to the base, and a gap is left between the first bracket and the first accommodating groove, and a gap is left between the second bracket and the second accommodating groove.

[0012] The present invention provides a new main landing gear mounting vehicle, wherein the slewing bearing includes an inner ring, an outer ring, a supporting base, a fifth motor and a worm gear, the inner ring is fixedly mounted on the supporting base, the outer ring is rotatably mounted on the outside of the inner ring, the fifth motor is fixedly mounted on the supporting base, the output shaft of the fifth motor is fixedly connected to the worm gear, the outer peripheral side wall of the outer ring is provided with circumferentially arranged external teeth, the worm gear is engaged with the external teeth, the supporting base is fixedly connected to the upper surface of the bearing plate, and the outer ring is fixedly connected to the middle position of the lower surface of the support plate.

[0013] The present invention provides a new main landing gear mounting vehicle, wherein the third lead screw is rotatably mounted on the upper surface of the base through a first bearing seat, the output shaft of the fourth motor is fixedly connected to the input shaft of the reducer, the output shaft of the reducer is fixedly connected to one end of the fourth lead screw, the other end of the fourth lead screw is rotatably mounted on the AGV body at the bottom of the accommodating cavity through a second bearing seat, and the fourth motor and the reducer are both mounted on the AGV body at the bottom of the accommodating cavity.

[0014] The difference between the new main landing gear installation vehicle of the present invention and the prior art is that when the new main landing gear installation vehicle of the present invention is used, the two blocking rollers are first removed from the piston rod of the horizontal electric cylinder, and the fasteners are removed from the first support arm and the second support arm. Then, the vertical rod of the main landing gear is moved between the first support arm and the second support arm, and the main landing gear is kept in a vertical state. At this time, the wheels of the main landing gear are arranged in pairs on both sides of the horizontal electric cylinder, and then the first support arm is driven by the first driving device to slide vertically along the AGV body. In other words, the first driving device can adjust the height of the first support arm. Similarly, the height of the second support arm is adjusted through the second driving device so that the position of the connecting fasteners of the first support arm and the second support arm is the same as the height of the sleeve on the main landing gear vertical rod, and then the fasteners are passed through the first support arm, the sleeve on the main landing gear vertical rod and the second support arm in sequence. At this time, the fasteners connect the main landing gear to the first support arm and the second support arm, and then the piston rod of the horizontal electric cylinder is extended, and then the two blocking rollers are respectively connected to the two sides of the piston rod of the horizontal electric cylinder, and the wheels of the main landing gear are located between the blocking rollers and the AGV body, and then the first driving device and the second driving device are used. The first support arm and the second support arm and the main landing gear connected to the two support arms are respectively raised (the height of the two support arms can be raised at the same time, of course, the height of one support arm can be made slightly higher than the other support arm, so that the main landing gear can swing in the vertical direction). When the main landing gear rises to a suitable height, the piston rods of the horizontal electric cylinder and the oblique electric cylinder are retracted at the same time. When the piston rod of the oblique electric cylinder is retracted, the horizontal electric cylinder is pulled to rotate from bottom to top (that is, the horizontal electric cylinder rotates in a circle around the hinge point between itself and the AGV body). While rotating, the piston rod of the horizontal electric cylinder is It also performs a retraction action, so the blocking roller will push the wheels of the main landing gear to move toward the AGV body. Since the sleeve on the main landing gear vertical rod is inserted into the fastener between the first support arm and the second support arm, and the wheel is located below the sleeve, when the blocking roller pushes the wheel to move toward the AGV body, the main landing gear will rotate around the fastener, that is, the wheel below the fastener rotates toward the AGV body, and at the same time, the vertical rod above the fastener rotates away from the AGV body, eventually causing the main landing gear to tilt. At this time, the wheels of the main landing gear are supported by the blocking roller.Since the main landing gear changes from a vertical state to an inclined state, the height of the main landing gear is greatly reduced, so that the AGV can transport the main landing gear to the installation position under the belly of the aircraft without hindrance (due to the low height of some parts of the belly of the aircraft, when the AGV transports the main landing gear in a vertical state to the installation position under the belly, it is often hindered by some lower parts of the belly, resulting in the inability to transport the main landing gear to the installation position). Then, the piston rods of the horizontal electric cylinder and the oblique electric cylinder are extended at the same time. Under the action of its own gravity, the main landing gear changes from the inclined state back to the vertical state. Then, the height of the two support arms and the main landing gear connected thereto are adjusted by the first drive device and the second drive device (the height of the two support arms and the main landing gear connected thereto can be adjusted at the same time). Raise the height of the two support arms at the same time. Of course, you can also make the height of one support arm slightly higher than the other support arm, so that the main landing gear can swing in the vertical direction). By moving the AGV body in the front and rear directions / moving in the left and right directions / rotating, the main landing gear also moves in the front and rear directions / moving in the left and right directions / rotating along with the AGV body until the posture of the main landing gear meets the installation requirements. Then install the main landing gear in place, remove the blocking roller and fasteners, retract the piston rod of the horizontal electric cylinder, and then drive the AGV body out from under the belly of the aircraft. Finally, connect the blocking roller to the piston rod of the horizontal electric cylinder, and connect the fasteners between the first support arm and the second support arm. In fact, at the beginning, changing the main landing gear from a vertical state to an inclined state not only makes it easier for the AGV to transport the main landing gear to the installation position under the belly of the aircraft, but also has another function, that is, the top of the vertical rod of the main landing gear in an inclined state is easier to enter the installation point. After the top of the vertical rod enters the installation point, the main landing gear in the inclined state is adjusted to a vertical state, and then the installation posture of the main landing gear can be adjusted. When disassembling the main landing gear, the AGV body is driven into the installation position of the main landing gear under the belly of the aircraft, the blocking rollers and fasteners are removed, and then the height of the two support arms is adjusted. Then, by moving the AGV body in the front-back direction / moving in the left-right direction / rotating, the two support arms and the two electric cylinders are also moved in the front-back direction / moving in the left-right direction / rotating along with the AGV body until the posture of the two support arms is adjusted. Then, the main landing gear is connected to the two support arms through fasteners, and the two blocking rollers are connected to the piston rod of the horizontal electric cylinder. Then, the connection between the main landing gear and the aircraft is removed, and then the main landing gear is changed from a vertical state to an inclined state through the blocking rollers. Finally, the AGV is driven out from under the belly of the aircraft. It can be seen that the present invention can freely adjust the posture of the main landing gear for easy installation, and of course, it can also be easy to disassemble.

[0015] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a front view of the new main landing gear installation vehicle of the present invention;

[0017] Figure 2 This is a left side view of the new main landing gear installation vehicle of the present invention;

[0018] Figure 3 A top view of the new main landing gear installation vehicle of the present invention;

[0019] Figure 4 A perspective view of a new main landing gear installation vehicle according to the present invention;

[0020] Figure 5 A perspective view of the novel main landing gear installation vehicle of the present invention with the accordion protective cover hidden;

[0021] Figure 6 A perspective view of the novel main landing gear installation vehicle of the present invention after hiding the accordion protective cover and the first support arm;

[0022] Figure 7 This is a front view of the new main landing gear installation vehicle of the present invention after the main landing gear is installed (the main landing gear is in a vertical state);

[0023] Figure 8 This is a left side view of the new main landing gear installation vehicle of the present invention after the main landing gear is installed (the main landing gear is in a vertical state);

[0024] Figure 9 This is a top view of the new main landing gear installation vehicle of the present invention after the main landing gear is installed (the main landing gear is in a vertical state);

[0025] Figure 10 This is a three-dimensional view of the new main landing gear installation vehicle of the present invention after the main landing gear is installed (the main landing gear is in a vertical state);

[0026] Figure 11 This is a left side view of the new main landing gear installation vehicle of the present invention after the main landing gear is installed (the main landing gear is in a tilted state);

[0027] Figure 12 This is a three-dimensional view of the new main landing gear installation vehicle of the present invention after the main landing gear is installed (the main landing gear is in a tilted state);

[0028] Figure 13 A perspective view of the novel main landing gear installation vehicle of the present invention (the main landing gear is in a tilted state and is hidden);

[0029] Figure 14 This is a front view of the two brackets, support plate, slewing bearing, load-bearing plate and base in the present invention;

[0030] Figure 15 It is a right side view of the two brackets, support plate, slewing bearing, load-bearing plate and base in the present invention;

[0031] Figure 16 It is a three-dimensional diagram of two brackets, a support plate, a slewing bearing, a load-bearing plate and a base in the present invention. DETAILED DESCRIPTION

[0032] like Figure 1 As shown, combined with Figure 2-16 As shown, the new main landing gear installation vehicle of the present invention includes an AGV, and a first support arm 13 and a second support arm 15 are arranged oppositely and spaced apart on the body 10 of the AGV. The first support arm 13 and the second support arm 15 are respectively slidably arranged on the body 10 of the AGV along the vertical direction. Specifically, the first support arm 13 and the second support arm 15 are slidably arranged on the front side wall of the AGV body 10. In order to enhance the balance of the AGV body 10, the two front wheels of the AGV are arranged to protrude from the front side wall of the body 10. The first support arm 13 is connected to a first drive device, which can drive the first support arm 13 to slide along the body 10 of the AGV. The second support arm 15 is connected to a second drive device, which can drive the second support arm 15 to slide along the body 10 of the AGV. A fastener is connected between the first support arm 13 and the second support arm 15. A horizontal electric cylinder 20 is provided below the first support arm 13 and the second support arm 15, and the horizontal electric cylinder 20 is arranged along the front and rear direction of the AGV body 10, and the cylinder body of the horizontal electric cylinder 20 is hinged to the body 10 of the AGV, and an oblique electric cylinder 19 is provided above the horizontal electric cylinder 20, one end of the oblique electric cylinder 19 is hinged to the AGV body 10 above the horizontal electric cylinder 20, and the other end of the oblique electric cylinder 19 is hinged to the cylinder body of the horizontal electric cylinder 20, and the oblique electric cylinder 19 can push and pull the horizontal electric cylinder 20 to rotate along the up and down directions (that is, the horizontal electric cylinder 20 can rotate in a circle from top to bottom / from bottom to top around the hinge point between itself and the AGV body 10 under the pushing / pulling action of the oblique electric cylinder 19), and two blocking rollers 21 are detachably connected to the piston rod of the horizontal electric cylinder 20, and the two blocking rollers 21 are both arranged horizontally and are respectively located on both sides of the piston rod of the horizontal electric cylinder 20.

[0033] like Figure 1 As shown, combined with Figure 2-13As shown, when the new main landing gear installation vehicle of the present invention is in use, first remove the two blocking rollers 21 from the piston rod of the horizontal electric cylinder 20, remove the fasteners from the first support arm 13 and the second support arm 15, then move the vertical rod 37 of the main landing gear 38 between the first support arm 13 and the second support arm 15, and keep the main landing gear 38 in a vertical state. At this time, the wheels 40 of the main landing gear 38 are arranged in pairs on both sides of the horizontal electric cylinder 20, and then the first support arm 13 is driven by the first driving device to slide vertically along the AGV body 10, that is, the first driving device can adjust the height of the first support arm 13, and similarly, the second support arm 15 is adjusted by the second driving device. , so that the position of the connecting fasteners of the first support arm 13 and the second support arm 15 is the same height as the sleeve 39 on the vertical rod 37 of the main landing gear 38, and then the fasteners are passed through the first support arm 13, the sleeve 39 on the vertical rod 37 of the main landing gear 38 and the second support arm 15 in sequence. At this time, the fasteners connect the main landing gear 38 to the first support arm 13 and the second support arm 15, and then the piston rod of the horizontal electric cylinder 20 is extended, and then the two blocking rollers 21 are respectively connected to the two sides of the piston rod of the horizontal electric cylinder 20, and the wheels 40 of the main landing gear 38 are located between the blocking rollers 21 and the AGV body 10, and then the first support is raised respectively by the first drive device and the second drive device. The arm 13 and the second support arm 15 and the main landing gear 38 connected to the two support arms (the heights of the two support arms can be raised at the same time, and of course the height of one support arm can be made slightly higher than the other support arm, so that the main landing gear 38 can swing in the vertical direction). When the main landing gear 38 rises to a suitable height, the piston rods of the horizontal electric cylinder 20 and the oblique electric cylinder 19 are retracted at the same time. When the piston rod of the oblique electric cylinder 19 is retracted, the horizontal electric cylinder 20 is pulled to rotate from bottom to top (that is, the horizontal electric cylinder 20 rotates in a circle around the hinge point between itself and the AGV body 10). While rotating, the piston rod of the horizontal electric cylinder 20 is also retracted, thereby blocking the roller 21. The wheel 40 of the main landing gear 38 will be pushed to move toward the AGV body 10. Since the sleeve 39 on the vertical rod 37 of the main landing gear 38 is inserted into the fastener between the first support arm 13 and the second support arm 15, and the wheel 40 is located below the sleeve 39, when the blocking roller 21 pushes the wheel 40 to move toward the AGV body 10, the main landing gear 38 will rotate around the fastener, that is, the wheel 40 located below the fastener will rotate toward the AGV body 10, and at the same time, the vertical rod 37 located above the fastener will rotate toward the AGV body 10, eventually causing the main landing gear 38 to tilt. At this time, the wheel 40 of the main landing gear 38 is supported by the blocking roller 21.Since the main landing gear 38 changes from a vertical state to an inclined state, the height of the main landing gear 38 is greatly reduced, so that the AGV can transport the main landing gear 38 to the installation position under the belly of the aircraft without hindrance (because some parts of the belly of the aircraft are relatively low in height, when the AGV transports the main landing gear 38 in a vertical state to the installation position under the belly, it is often hindered by some lower parts of the belly, resulting in the inability to transport the main landing gear 38 to the installation position). Then, the piston rods of the horizontal electric cylinder 20 and the oblique electric cylinder 19 are extended at the same time. Under the action of its own gravity, the main landing gear 38 changes from the inclined state to the vertical state, and then the height of the two support arms and the main landing gear 38 connected thereto is adjusted by the first drive device and the second drive device (the two support arms can be raised at the same time). The height of each support arm is adjusted, and of course, the height of one support arm can be made slightly higher than the other support arm, so that the main landing gear 38 can swing in the vertical direction). By moving the AGV body 10 in the front-to-back direction / moving in the left-to-right direction / rotating, the main landing gear 38 also moves in the front-to-back direction / moving in the left-to-right direction / rotating along with the AGV body 10 until the posture of the main landing gear 38 meets the installation requirements. Then, the main landing gear 38 is installed in place, and then the blocking roller 21 and the fastener are removed, and the piston rod of the horizontal electric cylinder 20 is retracted. Then, the AGV body 10 is driven out from under the belly of the aircraft. Finally, the blocking roller 21 is connected to the piston rod of the horizontal electric cylinder 20, and the fastener is connected between the first support arm 13 and the second support arm 15. In fact, at the beginning, changing the main landing gear 38 from a vertical state to an inclined state not only makes it easier for the AGV to transport the main landing gear 38 to the installation position under the belly, but also has another function, that is, the top of the vertical rod 37 of the main landing gear 38 in the inclined state is easier to enter the installation point. After the top of the vertical rod 37 enters the installation point, the main landing gear 38 in the inclined state is adjusted to a vertical state, and then the installation posture of the main landing gear 38 can be adjusted. When disassembling the main landing gear 38, the AGV body 10 is driven into the installation position of the main landing gear 38 under the belly of the aircraft, the blocking roller 21 and the fasteners are removed, and then the height of the two support arms is adjusted. Then, by moving the AGV body 10 in the front-back direction / moving in the left-right direction / rotating, the two support arms and the two electric cylinders are also moved in the front-back direction / moving in the left-right direction / rotating along with the AGV body 10 until the posture of the two support arms is adjusted. Then, the main landing gear 38 is connected to the two support arms by fasteners, and the two blocking rollers 21 are connected to the piston rod of the horizontal electric cylinder 20. Then, the connection between the main landing gear 38 and the aircraft is removed, and then the main landing gear 38 is changed from a vertical state to an inclined state by the blocking roller 21. Finally, the AGV is driven out from under the belly of the aircraft. It can be seen that the present invention can freely adjust the posture of the main landing gear 38 for easy installation, and of course, it can also be easy to disassemble.

[0034] like Figure 5 、 6 As shown, the present invention is a new main landing gear installation vehicle, wherein the body 10 of the AGV is provided with a first slide rail 32 arranged vertically, the first support arm 13 is fixedly provided with a first slider 35, the first slider 35 is slidably installed on the first slide rail 32, the first driving device includes a first motor 33 and a first screw 25, the first screw 25 is arranged vertically, the first motor 33 is provided on the body 10 of the AGV, the output shaft of the first motor 33 is fixedly connected to the lower end of the first screw 25, and the first support arm 13 is threadedly connected to the first screw 25.

[0035] The present invention discloses a new main landing gear installation vehicle, wherein the body 10 of the AGV is provided with a second slide rail 30 arranged vertically, the second support arm 15 is fixedly provided with a second slider 36, the second slider 36 is slidably installed on the second slide rail 30, the second drive device includes a second motor 29 and a second screw 27, the second screw 27 is arranged vertically, the second motor 29 is provided on the body 10 of the AGV, the output shaft of the second motor 29 is fixedly connected to the lower end of the second screw 27, and the second support arm 15 is threadedly connected to the second screw 27.

[0036] The first lead screw 25 and the first support arm 13 form a lead screw-nut pair (since the first support arm 13 is threadedly connected to the first lead screw 25, the first support arm 13 acts as a nut here), which can convert the rotational motion of the first lead screw 25 into axial motion of the first support arm 13 along the first lead screw 25. That is, when the first motor 33 drives the first lead screw 25 to rotate, the first support arm 13 can slide up and down along the first slide rail 32 via the first slider 35. Similarly, the second lead screw 27 and the second support arm 15 also form a lead screw-nut pair (since the second support arm 15 is threadedly connected to the second lead screw 27, the second support arm 15 acts as a nut here). When the second motor 29 drives the second lead screw 27 to rotate, the second support arm 15 can slide up and down along the second slide rail 30 via the second slider 36.

[0037] like Figure 1 As shown, combined with Figure 2-6As shown, the new main landing gear installation vehicle of the present invention, wherein the first support arm 13 is L-shaped, with the middle portion of the first support arm 13 higher than the ends. The second support arm 15 is also L-shaped, with the middle portion of the second support arm 15 also higher than the ends. The first support arm 13 is fixedly provided with the first slider 35 at one end, and the second support arm 15 is fixedly provided with the second slider 36 at one end. A fastener, which is a pin 14, is connected between the other end of the first support arm 13 and the other end of the second support arm 15. The first support arm 13 and the second support arm 15 have identical structures.

[0038] In the novel main landing gear installation vehicle of the present invention, the cylinder body of the oblique electric cylinder 19 is hingedly connected to the AGV body 10 above the horizontal electric cylinder 20. The piston rod of the oblique electric cylinder 19 is hingedly connected to the cylinder body of the horizontal electric cylinder 20. The two blocking rollers 21 are respectively connected to the piston rods of the horizontal electric cylinder 20 by threaded connections. The blocking rollers 21 are made of an elastic material, such as polyurethane, to prevent damage to the main landing gear 38 during contact between the blocking rollers 21 and the main landing gear 38.

[0039] like Figure 5 、 6 As shown, the new main landing gear installation vehicle of the present invention, wherein the first motor 33 and the first slide rail 32 are arranged on the body 10 of the AGV through the first bracket 11, the first bracket 11 includes a first top plate 24, a first bottom plate 34 and a first vertical plate 23, the first vertical plate 23 is connected between the first top plate 24 and the first bottom plate 34, the body 10 of the AGV is provided with a first accommodating groove, the first bracket 11 is arranged in the first accommodating groove, the first motor 33 is fixed on the first bottom plate 34, the upper end of the first screw 25 is rotatably mounted on the first top plate 24 through a bearing, and the first slide rail 32 is vertically fixed on the first vertical plate 23.

[0040] The present invention provides a new main landing gear installation vehicle, wherein the second motor 29 and the second slide rail 30 are arranged on the body 10 of the AGV through the second bracket 17, the second bracket 17 includes a second top plate 26, a second bottom plate 31 and a second vertical plate 28, the second vertical plate 28 is connected between the second top plate 26 and the second bottom plate 31, a second accommodating groove is provided on the body 10 of the AGV, the second bracket 17 is arranged in the second accommodating groove, the second motor 29 is fixed on the second bottom plate 31, the upper end of the second screw 27 is rotatably mounted on the second top plate 26 through a bearing, and the second slide rail 30 is vertically fixed on the second vertical plate 28.

[0041] The first and second receiving slots are both located on the front sidewall of the AGV body 10. The first bracket 11 and the second bracket 17 have identical structures. The first bracket 11 is equipped with three first vertical plates 23, which are respectively connected to the left, right, and rear sides of the first top plate 24 and the first bottom plate 34. In other words, the first top plate 24, the first bottom plate 34, and the three vertical plates together form a box-like structure with an open front. The first slide rail 32 is fixed to the first vertical plate 23 at the rear. One end of the first support arm 13 is slidably mounted on the first slide rail 32 via a first slider 35. The other end of the first support arm 13 extends through the front opening of the box-like structure to the front side of the AGV body 10. When the first support arm 13 slides up and down along the first slide rail 32, it also moves up and down along the front opening of the box-like structure. The second support arm 15, the second bracket 17, the second slide rail 30, the second lead screw 27 and the second motor 29 have the same structures as the first support arm 13, the first bracket 11, the first slide rail 32, the first lead screw 25 and the first motor 33 respectively. The mutual connection relationship between the second support arm 15, the second bracket 17, the second slide rail 30, the second lead screw 27 and the second motor 29 is also the same as the mutual connection relationship between the first support arm 13, the first bracket 11, the first slide rail 32, the first lead screw 25 and the first motor 33.

[0042] like Figure 1 As shown, combined with Figure 4 、 5 As shown in Figures 6 and 13, the first upper accordion protective cover 12 is connected between the first support arm 13 and the first top plate 24, and the first lower accordion protective cover 22 is connected between the first support arm 13 and the first bottom plate 34. When the first support arm 13 slides upward along the first slide rail 32, the first support arm 13 compresses the first upper accordion protective cover 12 and stretches the first lower accordion protective cover 22. Conversely, when the first support arm 13 slides downward along the first slide rail 32, the first support arm 13 compresses the first lower accordion protective cover 22 and stretches the first upper accordion protective cover 12. A second upper accordion protective cover 16 is connected between the second support arm 15 and the second top plate 26, and a second lower accordion protective cover 18 is connected between the second support arm 15 and the second bottom plate 31. When the second support arm 15 slides upward along the second slide rail 30, the second support arm 15 compresses the second upper accordion protective cover 16 and stretches the second lower accordion protective cover 18. Conversely, when the second support arm 15 slides downward along the second slide rail 30, the second support arm 15 compresses the second lower accordion protective cover 18 and stretches the second upper accordion protective cover 16. The accordion protective cover can prevent dust.

[0043] like Figure 14-16 As shown, combined with Figure 5 、 6As shown, the new main landing gear installation vehicle of the present invention, wherein the AGV body 10 is provided with a accommodating cavity, the accommodating cavity is located below the first accommodating slot and the second accommodating slot, the accommodating cavity is communicated with the first accommodating slot and the second accommodating slot, a support plate 41 is provided in the accommodating cavity, the first bracket 11 and the second bracket 17 are both provided on the support plate 41, the first bottom plate 34 of the first bracket 11 is fixedly provided at one end of the upper surface of the support plate 41, and the second bottom plate 31 of the second bracket 17 is fixedly provided at the other end of the upper surface of the support plate 41 The middle position of the lower surface of the support plate 41 is connected to the upper surface of the carrying plate 43 through a slewing bearing 42. A base 47 is provided below the carrying plate 43. A third slide rail 45 arranged along the front and rear direction of the AGV body 10 is provided on the upper surface of the base 47. A third slider 44 is fixed on the lower surface of the carrying plate 43. The third slider 44 is slidably mounted on the third slide rail 45. A third lead screw 54 is rotatably mounted on the upper surface of the base 47. The third lead screw 54 is located below the carrying plate 43. The third lead screw 54 The third guide rail 54 is arranged in the same direction as the third guide rail 45. The third guide rail 54 is driven to rotate by the third motor 48 (the third motor 48 is installed on the AGV body 10). The third guide rail 54 is threadedly connected to a first nut 55. The first nut 55 is fixedly connected to the lower surface of the bearing plate 43. A fourth guide rail 46 is provided below the base 47. The fourth guide rail 46 is fixedly provided on the AGV body 10 at the bottom of the accommodating cavity. The fourth guide rail 46 is arranged perpendicular to the third guide rail 45. The base 47 is slidably mounted on the fourth guide rail 46. 6, a fourth lead screw 52 is rotatably installed on the AGV body 10 at the bottom of the accommodating cavity, and the fourth lead screw 52 is located below the base 47. The fourth lead screw 52 is arranged in the same direction as the fourth slide rail 46. The fourth lead screw 52 is driven to rotate by a fourth motor 56. A second nut 50 is threadedly connected to the fourth lead screw 52, ​​and the second nut 50 is fixedly connected to the base 47 through a connecting plate 51. A gap is left between the first bracket 11 and the first accommodating groove, and a gap is left between the second bracket 17 and the second accommodating groove.

[0044] When the fourth slide rail 46 is fixed on the AGV body 10 at the bottom of the accommodating cavity, the two fourth slide rails 46 can be fixed on the AGV body 10 at the bottom of the accommodating cavity through supports respectively, so that space for installing the fourth screw 52 is left between the base 47 and the AGV body 10 at the bottom of the accommodating cavity.

[0045] The present invention provides a new main landing gear mounting vehicle, wherein the slewing bearing 42 includes an inner ring, an outer ring, a supporting base, a fifth motor 57 and a worm. The inner ring is fixedly mounted on the supporting base, and the outer ring is rotatably mounted on the outside of the inner ring. The fifth motor 57 is fixedly mounted on the supporting base, and the worm is fixedly connected to the output shaft of the fifth motor 57. The outer peripheral side wall of the outer ring is provided with circumferentially arranged external teeth, and the worm is engaged with the external teeth. The supporting base is fixedly connected to the upper surface of the bearing plate 43, and the outer ring is fixedly connected to the middle position of the lower surface of the support plate 41.

[0046] The present invention provides a new main landing gear installation vehicle, wherein the third screw 54 is rotatably mounted on the upper surface of the base 47 through a first bearing seat (not shown in the figure), the output shaft of the fourth motor 56 is fixedly connected to the input shaft of the reducer 53, the output shaft of the reducer 53 is fixedly connected to one end of the fourth screw 52, ​​and the other end of the fourth screw 52 is rotatably mounted on the AGV body 10 at the bottom of the accommodating cavity through a second bearing seat 49, and the fourth motor 56 and the reducer 53 are both mounted on the AGV body 10 at the bottom of the accommodating cavity.

[0047] The slewing bearing 42 is conventional. When the fifth motor 57 drives the worm to rotate, the worm meshes with the outer teeth of the outer ring, causing the outer ring to rotate relative to the inner ring and the support base. Furthermore, because the outer ring is fixedly connected to the support plate 41, and the support base is fixedly connected to the load plate 43, the fifth motor 57 can drive the support plate 41 to rotate relative to the load plate 43. Because the first support arm 13 is slidably mounted on the first slide rail 32 via the first slider 35, and the first slide rail 32 is mounted on the first bracket 11, which is in turn mounted on the support plate 41, the first support arm 13 is also mounted on the support plate 41. Similarly, the second support arm 15 is also mounted on the support plate 41. Therefore, when the fifth motor 57 drives the support plate 41 to rotate relative to the load plate 43, the first and second support arms 13, 15, and the main landing gear 38 connected thereto can also rotate along with the support plate 41 relative to the load plate 43. In other words, the fifth motor 57 can drive the main landing gear 38 to rotate horizontally.

[0048] The third screw 54 and the first nut 55 form a screw-nut pair, which can convert the rotational motion of the third screw 54 into the axial motion of the first nut 55 along the third screw 54, that is, when the third motor 48 drives the third screw 54 to rotate, the first nut 55 moves along the axial direction of the third screw 54. Since the first nut 55 is fixedly connected to the supporting plate 43, the supporting plate 43 slides along the third slide rail 45 through the third slider 44 under the drive of the first nut 55. Because the first support arm 13 and the second support arm 15 are arranged on the support plate 41, and the support plate 41 is connected to the supporting plate 43 through the slewing bearing 42, the first support arm 13 and the second support arm 15 and the main landing gear 38 connected thereto can follow the supporting plate 43 to slide along the third slide rail 45. Since the third slide rail 45 is arranged along the front and rear direction of the AGV body 10, it can be said that the third motor 48 can drive the main landing gear 38 to move along the front and rear direction of the AGV body 10.

[0049] The fourth lead screw 52 and the second nut 50 form a lead screw nut pair, which can convert the rotational motion of the fourth lead screw 52 into the axial motion of the second nut 50 along the fourth lead screw 52, ​​that is, when the fourth motor 56 drives the fourth lead screw 52 to rotate through the reducer 53, the second nut 50 moves along the axial direction of the fourth lead screw 52. Since the second nut 50 is fixedly connected to the base 47, the base 47 slides along the fourth slide rail 46 under the drive of the second nut 50. Because the first support arm 13 and the second support arm 15 are arranged on the support plate 41, the support plate 41 is also fixed to the base 47. It is connected to the supporting plate 43 through the slewing bearing 42, and the supporting plate 43 is arranged on the base 47 through the third slider 44 and the third slide rail 45. Therefore, the first support arm 13 and the second support arm 15 and the main landing gear 38 connected thereto can follow the base 47 and slide along the fourth slide rail 46. Since the fourth slide rail 46 is arranged perpendicular to the third slide rail 45 (that is, the fourth slide rail 46 is arranged along the left and right direction of the AGV body 10), it can be said that the fourth motor 56 can drive the main landing gear 38 to move along the left and right direction of the AGV body 10.

[0050] It can be seen that the present invention can achieve six attitude adjustments of the main landing gear 38:

[0051] (1) Movement in the vertical direction: This can also be referred to as movement in the Z-axis direction, i.e., by simultaneously driving the first motor 33 and the second motor 29, the first support arm 13 and the second support arm 15 can be simultaneously slid upward or downward, so that the main landing gear 38 connected to the two support arms can also move in the vertical direction;

[0052] (2) Movement along the front-to-back direction of the AGV body 10: This can also be referred to as movement along the X-axis direction, that is, the third motor 48 can drive the main landing gear 38 to move along the front-to-back direction of the AGV body 10;

[0053] (3) Movement along the left and right direction of the AGV body 10: This can also be referred to as movement along the Y-axis direction, that is, the fourth motor 56 can drive the main landing gear 38 to move along the left and right direction of the AGV body 10;

[0054] (4) Swinging in the vertical direction: The heights of the first support arm 13 and the second support arm 15 are adjusted by the first motor 33 and the second motor 29, respectively. When the height of one support arm is slightly higher than the other support arm, the main landing gear 38 can swing in the vertical direction (i.e., the wheels 40 of the main landing gear 38 swing toward the support arm with slightly higher height);

[0055] (5) Rotation in the horizontal direction: The fifth motor 57 can drive the main landing gear 38 to rotate in the horizontal direction, that is, the main landing gear 38 rotates along the vertical rotation axis of the slewing support 42;

[0056] (6) Switching between the vertical state and the inclined state: When the piston rods of the horizontal electric cylinder 20 and the oblique electric cylinder 19 are retracted, the main landing gear 38 can be changed from the vertical state to the inclined state. Thereafter, the piston rods of the horizontal electric cylinder 20 and the oblique electric cylinder 19 are extended, so that the main landing gear 38 is changed from the inclined state to the vertical state under the action of its own gravity.

[0057] The reason why there is a gap between the first bracket 11 and the first receiving groove, and a gap between the second bracket 17 and the second receiving groove is that when the first bracket 11, the second bracket 17 and the main landing gear 38 move together along the front and rear direction of the AGV body 10 / move along the left and right direction of the AGV body 10 / rotate in the horizontal direction, the first receiving groove can leave enough space for the above-mentioned movement of the first bracket 11, and the second receiving groove can also leave enough space for the above-mentioned movement of the second bracket 17.

[0058] like Figure 1 As shown, combined with Figure 2-16As shown, when the new main landing gear installation vehicle of the present invention is in use, first remove the two blocking rollers 21 from the piston rod of the horizontal electric cylinder 20, remove the fasteners from the first support arm 13 and the second support arm 15, then move the vertical rod 37 of the main landing gear 38 between the first support arm 13 and the second support arm 15, and keep the main landing gear 38 in a vertical state. At this time, the wheels 40 of the main landing gear 38 are arranged in pairs on both sides of the horizontal electric cylinder 20, and then the first motor 33 is used to drive the first support arm 13 to slide vertically along the AGV body 10, that is, the first motor 33 can adjust the height of the first support arm 13. Similarly, the height of the second support arm 15 is adjusted by the second motor 29 to make the first support arm The position of the connecting pin shaft 14 of the first support arm 13 and the second support arm 15 is the same height as the sleeve 39 on the vertical rod 37 of the main landing gear 38, and then the pin shaft 14 is passed through the first support arm 13, the sleeve 39 on the vertical rod 37 of the main landing gear 38 and the second support arm 15 in sequence. At this time, the pin shaft 14 connects the main landing gear 38 to the first support arm 13 and the second support arm 15 (of course, in order to make the connection more stable, a nut can be threaded on both ends of the pin shaft 14). Then, the piston rod of the horizontal electric cylinder 20 is extended, and then the two blocking rollers 21 are respectively connected to the two sides of the piston rod of the horizontal electric cylinder 20, and the wheels 40 of the main landing gear 38 are located between the blocking rollers 21 and the AGV body 10, and then the first motor 3 is used to rotate the main landing gear 38. 3 and the second motor 29 respectively raise the first support arm 13 and the second support arm 15 and the main landing gear 38 connected to the two support arms (the heights of the two support arms can be raised at the same time, of course, the height of one support arm can be made slightly higher than the other support arm, so that the main landing gear 38 can swing in the vertical direction). When the main landing gear 38 rises to an appropriate height, the piston rods of the horizontal electric cylinder 20 and the oblique electric cylinder 19 are retracted at the same time. When the piston rod of the oblique electric cylinder 19 is retracted, the horizontal electric cylinder 20 is pulled to rotate from bottom to top (that is, the horizontal electric cylinder 20 rotates in a circle around the hinge point between itself and the AGV body 10). While rotating, the piston rod of the horizontal electric cylinder 20 is also retracted, so that The blocking roller 21 will push the wheel 40 of the main landing gear 38 toward the direction close to the AGV body 10. Since the sleeve 39 on the vertical rod 37 of the main landing gear 38 is inserted into the pin 14 between the first support arm 13 and the second support arm 15, and the wheel 40 is located below the sleeve 39, when the blocking roller 21 pushes the wheel 40 toward the direction close to the AGV body 10, the main landing gear 38 will rotate around the pin 14, that is, the wheel 40 located below the pin 14 rotates toward the direction close to the AGV body 10, and at the same time, the vertical rod 37 located above the pin 14 rotates away from the AGV body 10, eventually causing the main landing gear 38 to tilt. At this time, the wheel 40 of the main landing gear 38 is supported by the blocking roller 21.Since the main landing gear 38 changes from a vertical state to an inclined state, the height of the main landing gear 38 is greatly reduced, so that the AGV can transport the main landing gear 38 to the installation position under the belly of the aircraft without hindrance (because some parts of the belly of the aircraft are relatively low, when the AGV transports the main landing gear 38 in a vertical state to the installation position under the belly, it is often hindered by some lower parts of the belly, resulting in the inability to transport the main landing gear 38 to the installation position). Then, the piston rods of the horizontal electric cylinder 20 and the oblique electric cylinder 19 are extended at the same time. Under the action of its own gravity, the main landing gear 38 changes from the inclined state back to the vertical state. The first motor 33 and the second motor 29 are then used to adjust the height of the two support arms and the main landing gear 38 connected thereto (both support arms can be raised simultaneously, or one support arm can be raised slightly higher than the other, which allows the main landing gear 38 to swing vertically). The third motor 48 is used to drive the main landing gear 38 to move in the front-to-back direction of the AGV body 10. The fourth motor 56 is used to drive the main landing gear 38 to move in the left-to-right direction of the AGV body 10. The fifth motor 57 is used to drive the main landing gear 38 to rotate horizontally until the posture of the main landing gear 38 meets the installation requirements. During the aforementioned adjustment of the main landing gear 38 in the front-to-back direction, left-to-right direction, or horizontal rotation, if the blocking roller 21 interferes with the above-mentioned movement of the main landing gear 38, the blocking roller 21 can be removed. After the posture of the main landing gear 38 meets the installation requirements, the main landing gear 38 is then installed in place. If the blocking roller 21 was not removed when adjusting the posture of the main landing gear 38, the blocking roller 21 and the pin 14 are removed, and the piston rod of the horizontal electric cylinder 20 is retracted. The AGV body 10 is then driven out from under the belly of the aircraft. Finally, the blocking roller 21 is connected to the piston rod of the horizontal electric cylinder 20, and the pin 14 is connected between the first support arm 13 and the second support arm 15. In fact, at the beginning, changing the main landing gear 38 from a vertical state to a tilted state not only makes it easier for the AGV to transport the main landing gear 38 to the installation position under the belly of the aircraft, but also has another function, that is, the top of the vertical rod 37 of the main landing gear 38 in the tilted state is easier to enter the installation point. After the top of the vertical rod 37 enters the installation point, the tilted main landing gear 38 is adjusted to a vertical state, and then the installation posture of the main landing gear 38 is adjusted.When disassembling the main landing gear 38, the AGV body 10 is driven into the installation position of the main landing gear 38 under the belly of the aircraft, the blocking roller 21 and the fasteners are removed, and then the height of the two support arms is adjusted. Then, the two support arms are driven to move in the front-back direction of the AGV body 10 by the third motor 48, and the two support arms are driven to move in the left-right direction of the AGV body 10 by the fourth motor 56. The two support arms are driven to rotate in the horizontal direction by the fifth motor 57 until the posture of the two support arms is adjusted. Then, the main landing gear 38 is connected to the two support arms by the pin 14, and the two blocking rollers 21 are connected to the piston rod of the horizontal electric cylinder 20. Then, the connection between the main landing gear 38 and the aircraft is removed, and then the main landing gear 38 is changed from a vertical state to an inclined state by the blocking roller 21. Finally, the AGV is driven out from under the belly of the aircraft. It can be seen that the present invention can freely adjust the posture of the main landing gear 38 for easy installation, and of course, it can also be easy to disassemble.

[0059] It should be noted that the directions or positional relationships indicated by terms such as "center", "up", "down", "front", "back", "left", "right", and "middle" 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.

[0060] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0061] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A new main landing gear installation vehicle, characterized by: The AGV comprises a vehicle body of the AGV, wherein a first support arm and a second support arm are arranged opposite to and spaced apart from each other, the first support arm and the second support arm are respectively slidably arranged on the vehicle body of the AGV along a vertical direction, the first support arm is connected to a first driving device, the first driving device can drive the first support arm to slide along the vehicle body of the AGV, the second support arm is connected to the second driving device, and the second driving device can drive the second support arm to slide along the vehicle body of the AGV, a fastener is connected between the first support arm and the second support arm, a horizontal electric cylinder is provided below the first support arm and the second support arm, the cylinder body of the horizontal electric cylinder is hinged to the vehicle body of the AGV, an oblique pull electric cylinder is provided above the horizontal electric cylinder, one end of the oblique pull electric cylinder is hinged to the AGV vehicle body above the horizontal electric cylinder, and the other end of the oblique pull electric cylinder is hinged to the cylinder body of the horizontal electric cylinder, the oblique pull electric cylinder can push and pull the horizontal electric cylinder to rotate in the up and down directions, and two blocking rollers are detachably connected to the piston rod of the horizontal electric cylinder, and the two blocking rollers are horizontally arranged and respectively located on both sides of the piston rod of the horizontal electric cylinder. The AGV body is provided with a first slide rail arranged vertically, the first support arm is fixed with a first slider, the first slider is slidably mounted on the first slide rail, the first driving device includes a first motor and a first screw, the first screw is arranged vertically, the first motor is provided on the AGV body, the output shaft of the first motor is fixedly connected to the lower end of the first screw, and the first support arm is threadedly connected to the first screw. The AGV body is provided with a second slide rail arranged vertically, the second support arm is fixedly provided with a second slider, the second slider is slidably mounted on the second slide rail, the second driving device includes a second motor and a second lead screw, the second lead screw is arranged vertically, the second motor is provided on the AGV body, the output shaft of the second motor is fixedly connected to the lower end of the second lead screw, and the second support arm is threadedly connected to the second lead screw. The first motor and the first slide rail are arranged on the body of the AGV through a first bracket. The first bracket includes a first top plate, a first bottom plate and a first vertical plate. The first vertical plate is connected between the first top plate and the first bottom plate. A first accommodating groove is provided on the body of the AGV. The first bracket is arranged in the first accommodating groove. The first motor is fixed on the first bottom plate. The upper end of the first lead screw is rotatably mounted on the first top plate through a bearing. The first slide rail is vertically fixed on the first vertical plate. The second motor and the second slide rail are arranged on the body of the AGV through the second bracket. The second bracket includes a second top plate, a second bottom plate and a second vertical plate. The second vertical plate is connected between the second top plate and the second bottom plate. A second accommodating groove is provided on the body of the AGV. The second bracket is arranged in the second accommodating groove. The second motor is fixed on the second bottom plate. The upper end of the second lead screw is rotatably mounted on the second top plate through a bearing. The second slide rail is vertically fixed on the second vertical plate. The AGV body is provided with a accommodating cavity, which is located below the first accommodating slot and the second accommodating slot, and the accommodating cavity is communicated with the first accommodating slot and the second accommodating slot. A support plate is provided in the accommodating cavity, and the first bracket and the second bracket are both provided on the support plate, the first bottom plate of the first bracket is fixedly provided on one end of the upper surface of the support plate, and the second bottom plate of the second bracket is fixedly provided on the other end of the upper surface of the support plate, and the middle position of the lower surface of the support plate is connected to the upper surface of the carrying plate through a slewing bearing, and a base is provided below the carrying plate, and a third slide rail is provided on the upper surface of the base along the front and rear direction of the AGV body, and a third slider is fixedly provided on the lower surface of the carrying plate, and the third slider is slidably mounted on the third slide rail, and a third screw is rotatably mounted on the upper surface of the base, and the third screw is rotatably mounted with the third screw. The third slide rail is arranged in the same direction, and the third screw is driven to rotate by the third motor, and the third screw is threadedly connected to the first nut, and the first nut is fixedly connected to the lower surface of the carrying plate, and a fourth slide rail is provided below the base, and the fourth slide rail is fixedly arranged on the AGV body at the bottom of the accommodating cavity, and the fourth slide rail is arranged perpendicular to the third slide rail, and the base is slidably installed on the fourth slide rail, and the AGV body at the bottom of the accommodating cavity is rotatably installed, and the fourth screw is located below the base, and the fourth screw and the fourth slide rail have the same arrangement direction, and the fourth screw is driven to rotate by the fourth motor, and the fourth screw is threadedly connected to the second nut, and the second nut is fixedly connected to the base, and a gap is left between the first bracket and the first accommodating groove, and a gap is left between the second bracket and the second accommodating groove. The slewing bearing includes an inner ring, an outer ring, a supporting base, a fifth motor and a worm. The inner ring is fixedly mounted on the supporting base, the outer ring is rotatably mounted on the outside of the inner ring, the fifth motor is fixedly mounted on the supporting base, the output shaft of the fifth motor is fixedly connected with the worm, the outer peripheral side wall of the outer ring is provided with circumferentially arranged external teeth, the worm is engaged with the external teeth, the supporting base is fixedly connected to the upper surface of the bearing plate, and the outer ring is fixedly connected to the middle position of the lower surface of the support plate.

2. The new main landing gear installation vehicle according to claim 1 is characterized in that: The first support arm is L-shaped, and the middle part of the first support arm is higher than the two ends. The second support arm is also L-shaped, and the middle part of the second support arm is also higher than the two ends. The first slider is fixedly provided at one end of the first support arm, and the second slider is fixedly provided at one end of the second support arm. A fastener is connected between the other end of the first support arm and the other end of the second support arm, and the fastener is a pin.

3. The new main landing gear installation vehicle according to claim 2 is characterized in that: The cylinder body of the oblique-pull electric cylinder is hinged on the AGV body above the horizontal electric cylinder, the piston rod of the oblique-pull electric cylinder is hinged on the cylinder body of the horizontal electric cylinder, and the two blocking rollers are respectively connected to the piston rod of the horizontal electric cylinder by threaded connection.

4. The new main landing gear installation vehicle according to claim 3 is characterized in that: The third lead screw is rotatably mounted on the upper surface of the base through the first bearing seat, the output shaft of the fourth motor is fixedly connected to the input shaft of the reducer, the output shaft of the reducer is fixedly connected to one end of the fourth lead screw, and the other end of the fourth lead screw is rotatably mounted on the AGV body at the bottom of the accommodating cavity through the second bearing seat, and the fourth motor and reducer are both mounted on the AGV body at the bottom of the accommodating cavity.

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