Device for turning over aircraft cargo door in mid-air

Abstract

The present invention relates to the technical field of aircraft production and maintenance, and in particular to a device for turning over an aircraft cargo door in mid-air. The device comprises a mounting bracket, two side sliders, two bottom sliders, two lifting mechanisms, two side connecting ropes, a side transverse lifting rod, and a bottom transverse lifting rod. One or two connecting seats are provided on the side transverse lifting rod, and one or two connecting seats are provided on the bottom transverse lifting rod. By controlling the back-and-forth movement of the side sliders and the bottom sliders, the lifting ropes of the lifting mechanism are retracted and extended, thereby realizing the turning over of the aircraft cargo door in mid-air, significantly reducing the intensity of manual labor, improving the turning efficiency, and reducing the risk of quality problems.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft production and maintenance, and in particular to a device for turning over an aircraft cargo door in the air. Background Art

[0002] After final assembly, aircraft cargo doors require riveting. This involves hoisting the door onto a riveting bracket and riveting the door inside and out while it lies flat and crawls horizontally. To complete the riveting work, the door must be turned over (rotated 180°). Currently, this is done manually using a sling and overhead crane. Due to the door's heavy weight, manual labor is intensive and inefficient, impacting production rates. Summary of the Invention

[0003] The technical problem solved by the present invention is to provide a device for turning over an aircraft cargo door in mid-air, which has low labor intensity and high turning efficiency.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a device for turning over an aircraft cargo door in the air, comprising a mounting bracket, two side sliders, two bottom sliders, two lifting mechanisms, two side connecting ropes, side transverse lifting rods, and a bottom transverse lifting rod; the mounting bracket comprises a transverse connecting rod and two longitudinal connecting rods, the two longitudinal connecting rods being vertically arranged at both ends of the transverse connecting rod, side guide rails being arranged on the outer side walls of the longitudinal connecting rods, and a bottom guide rail being arranged at the bottom of the longitudinal connecting rods, and the side guide rails and the bottom guide rails being arranged along the length direction of the longitudinal connecting rods;

[0005] A side slider is matched and arranged on a side guide rail, and the corresponding side slider can slide back and forth along the side guide rail; a bottom slider is matched and arranged on a bottom guide rail, and the corresponding bottom slider can slide back and forth along the bottom guide rail;

[0006] A lifting mechanism is provided on a bottom slider, the lifting mechanism includes a lifting rope, the lower ends of the lifting ropes of the two lifting mechanisms are respectively connected to the two ends of the bottom transverse suspension rod, the upper end of a side connecting rope is connected to a side slider, and the lower ends of the two side connecting ropes are respectively connected to the two ends of the side transverse suspension rod;

[0007] Two connecting seats are provided on the side transverse suspension rod, and two connecting seats are provided on the bottom transverse suspension rod.

[0008] Furthermore, a reinforcement connecting rod is provided between the transverse connecting rod and the longitudinal connecting rod.

[0009] Furthermore, the corresponding side sliding blocks slide back and forth along the side guide rails through a first power transmission mechanism;

[0010] The first power transmission mechanism includes a first motor and a first transmission screw. The first motor is arranged on the longitudinal connecting rod. The output shaft of the first motor is connected to the first transmission screw. The first transmission screw is arranged on the longitudinal connecting rod, and the first transmission screw is arranged along the length direction of the longitudinal connecting rod. The side slider is threadedly connected and sleeved on the first transmission screw.

[0011] Furthermore, the corresponding bottom sliding block slides back and forth along the bottom guide rail through a second power transmission mechanism;

[0012] The second power transmission mechanism includes a second motor and a second transmission screw. The second motor is arranged on the longitudinal connecting rod. The output shaft of the second motor is connected to the second transmission screw. The second transmission screw is arranged on the longitudinal connecting rod, and the second transmission screw is arranged along the length direction of the longitudinal connecting rod. The bottom slider is threadedly connected to the second transmission screw.

[0013] Furthermore, the lifting mechanism is an electric hoist.

[0014] Furthermore, first connecting rings are respectively provided at both ends of the bottom transverse suspension rod, and the lower end of the suspension rope is connected to the bottom transverse suspension rod through the first connecting rings.

[0015] Furthermore, a second connecting ring is provided at each end of the side transverse suspender rod, and the lower end of the side connecting rope is connected to the side transverse suspender rod through the second connecting ring;

[0016] A third connecting ring is provided on the side slider, and the upper end of the side connecting rope is connected to the side slider through the third connecting ring.

[0017] Furthermore, the connecting seat includes at least one connecting plate and at least one connecting clamping plate, one connecting clamping plate is vertically arranged on one connecting plate, and at least one cargo door connecting hole is arranged on the connecting plate;

[0018] A boom clamping hole is provided in the connecting clamping plate, and the side transverse boom or the bottom transverse boom is arranged through the boom clamping hole.

[0019] Furthermore, two cargo door connection holes are provided on the connection plate, one cargo door connection hole is a circular hole, and the other cargo door connection hole is a strip-shaped hole;

[0020] The connecting clamping plate includes a lower plate body and an upper pressure plate. The lower plate body is provided with a lower hole body, and the upper pressure plate is provided with an upper hole body. The lower plate body is detachably provided with the upper pressure plate through connecting screws, and the lower hole body and the upper hole body form a boom clamping hole.

[0021] Furthermore, a control module is also included, and the hoisting mechanism, the first power transmission mechanism, and the second power transmission mechanism are all electrically connected to the control module.

[0022] The beneficial effects of the present invention are as follows: the device for turning over an aircraft cargo door in the air comprises a mounting bracket, two side sliders, two bottom sliders, two lifting mechanisms, two side connecting ropes, a side transverse lifting rod and a bottom transverse lifting rod. By controlling the back and forth movement of the side sliders and the bottom sliders, the lifting ropes of the lifting mechanism are retracted and extended, thereby realizing the turning over of the aircraft cargo door in the air, significantly reducing the intensity of manual labor, improving the efficiency and safety of the turning over, and reducing the risk of quality problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the present invention;

[0024] Figure 2 This is a schematic diagram of the mounting bracket and the components mounted on the mounting bracket after being turned 180°;

[0025] Figure 3 It is a schematic diagram of the side transverse boom;

[0026] Figure 4 is a schematic diagram of the bottom horizontal boom;

[0027] Figure 5 is a schematic diagram of the connecting plate;

[0028] Figure 6 This is a schematic diagram of the aircraft cargo hold;

[0029] Figure 7 It's the signal for the aircraft cargo door to flip up in the air. Figure 1 ;

[0030] Figure 8 It's the signal for the aircraft cargo door to flip up in the air. Figure 2 ;

[0031] Figure 9 It's the signal for the aircraft cargo door to flip up in the air. Figure 3 ;

[0032] Figure 10 It's the signal for the aircraft cargo door to flip up in the air. Figure 4 ;

[0033] Figure 11 It's the signal for the aircraft cargo door to flip up in the air. Figure 5 ;

[0034] Marked as: mounting bracket 1, transverse connecting rod 11, longitudinal connecting rod 12, side guide rail 121, bottom guide rail 122, reinforcement connecting rod 13, side slider 2, first motor 21, first transmission screw 22, third connecting ring 23, bottom slider 3, second motor 31, second transmission screw 32, lifting mechanism 4, lifting rope 41, side connecting rope 5, side transverse lifting rod 6, second connecting ring 61, bottom transverse lifting rod 7, first connecting ring 71, connecting seat 8, connecting plate 81, cargo door connecting hole 811, connecting clamping plate 82, lifting rod clamping hole 821, connecting screw 83, aircraft cargo door 9, lifting point 91, control module 10. DETAILED DESCRIPTION

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 11 As shown, the device for turning over an aircraft cargo door in mid-air of the present invention comprises a mounting bracket 1, two side sliders 2, two bottom sliders 3, two lifting mechanisms 4, two side connecting ropes 5, a side transverse suspension rod 6, and a bottom transverse suspension rod 7. The mounting bracket 1 comprises a transverse connecting rod 11 and two longitudinal connecting rods 12. The two longitudinal connecting rods 12 are respectively vertically arranged at both ends of the transverse connecting rod 11. Side guide rails 121 are provided on the outer side walls of the longitudinal connecting rod 12. A bottom guide rail 122 is provided at the bottom of the longitudinal connecting rod 12. The side guide rails 121 and the bottom guide rail 122 are both arranged along the length direction of the longitudinal connecting rod 12.

[0037] A side slider 2 is matched with a side guide rail 121, and the corresponding side slider 2 can slide back and forth along the side guide rail 121; a bottom slider 3 is matched with a bottom guide rail 122, and the corresponding bottom slider 3 can slide back and forth along the bottom guide rail 122;

[0038] A lifting mechanism 4 is provided on a bottom slider 3. The lifting mechanism 4 includes a lifting rope 41. The lower ends of the lifting ropes 41 of the two lifting mechanisms 4 are respectively connected to the two ends of the bottom transverse suspension rod 7. The upper end of a side connecting rope 5 is connected to a side slider 2. The lower ends of the two side connecting ropes 5 are respectively connected to the two ends of the side transverse suspension rod 6.

[0039] Two connecting seats 8 are provided on the side transverse suspension rod 6 , and two connecting seats 8 are provided on the bottom transverse suspension rod 7 .

[0040] For example Figure 6 As shown, the aircraft cargo door 9 is provided with four symmetrically arranged lifting points 91, and each lifting point 91 is provided with four lifting connection holes.

[0041] The aircraft cargo door 9 is riveted in a completely flat and horizontal position. Figure 7、 Figure 8 As shown, the aircraft cargo door 9 is in a completely flat position, as shown in FIG. Figure 11 As shown, the aircraft cargo door 9 is in a horizontal climbing posture. The process of turning over the aircraft cargo door 9 using the aerial turning device of the present invention is as follows: after completing the riveting work to put the aircraft cargo door 9 in a completely horizontal lying posture, first, the connecting bolts are passed through the lifting connection holes of the aircraft cargo door 9 and the cargo door connection holes 811 of the connecting seat 8 to connect the connecting seat 8 to the aircraft cargo door 9, as shown in FIG. Figure 7 、 Figure 8 As shown, at this time, the aircraft cargo door 9 is in a completely flat position, the side transverse hanger 6 and the bottom transverse hanger 7 are arranged parallel to each other, the two end points of the side transverse hanger 6 are located outside the aircraft cargo door 9, and the two end points of the bottom transverse hanger 7 are located outside the aircraft cargo door 9, that is, the lengths of the side transverse hanger 6 and the bottom transverse hanger 7 are greater than the width of the aircraft cargo door 9, the two end points of the side transverse hanger 6 correspond to the two end points of the bottom transverse hanger 7, the side slider 2 is located in the middle of the side guide rail 121, and the bottom slider 3 is located in the middle of the bottom guide rail 122; then the hoisting mechanism 4 is controlled to work, and the hoisting mechanism 4 retracts the hoisting rope 41 until the aircraft cargo door 9 is in a vertical position, as shown in FIG. Figure 9 and then the side slider 2 moves to the left, the bottom slider 3 moves to the right, while the lifting mechanism 4 continues to retract the lifting rope 41 until Figure 10 Finally, after the aircraft cargo door 9 is turned over, the side slider 2 and the bottom slider 3 are moved to the middle, and the lifting mechanism 4 extends the lifting rope 41, so that the aircraft cargo door 9 is in a flat climbing posture, such as Figure 11 As shown, the turning over of the aircraft cargo door 9 is completed.

[0042] Specifically, the transverse connecting rod 11 and the two longitudinal connecting rods 12 form an I-shaped structure. In order to improve the strength of the mounting bracket 1, Figure 1 、 Figure 2 As shown, a reinforcement connecting rod 13 is provided between the transverse connecting rod 11 and the longitudinal connecting rod 12 .

[0043] In order to facilitate the side slider 2 to slide back and forth along the side guide rail 121, Figure 2As shown, the side slider 2 corresponding to the present invention slides back and forth along the side guide rail 121 through a first power transmission mechanism. The first power transmission mechanism includes a first motor 21 and a first transmission screw 22. The first motor 21 is arranged on the longitudinal connecting rod 12. The output shaft of the first motor 21 is connected to the first transmission screw 22. The first transmission screw 22 is arranged on the longitudinal connecting rod 12 and is arranged along the length direction of the longitudinal connecting rod 12. The side slider 2 is sleeved on the first transmission screw 22 through a threaded connection. When the first motor 21 is working, the output shaft of the first motor 21 rotates. The rotation of the output shaft of the first motor 21 drives the first transmission screw 22 to rotate. The rotation of the first transmission screw 22 causes the side slider 2 to move. By controlling the forward and reverse rotation of the first motor 21, the back and forth movement of the side slider 2 is achieved.

[0044] Similarly, in order to facilitate the bottom slider 3 to slide back and forth along the bottom guide rail 122, Figure 2 As shown, the bottom slider 3 corresponding to the present invention slides back and forth along the bottom guide rail 122 through a second power transmission mechanism. The second power transmission mechanism includes a second motor 31 and a second transmission screw 32. The second motor 31 is arranged on the longitudinal connecting rod 12. The output shaft of the second motor 31 is connected to the second transmission screw 32. The second transmission screw 32 is arranged on the longitudinal connecting rod 12 and is arranged along the length direction of the longitudinal connecting rod 12. The bottom slider 3 is sleeved on the second transmission screw 32 through a threaded connection. When the second motor 31 is working, the output shaft of the second motor 31 rotates. The rotation of the output shaft of the second motor 31 drives the second transmission screw 32 to rotate. The rotation of the second transmission screw 32 causes the bottom slider 3 to move. By controlling the forward and reverse rotation of the second motor 31, the back and forth movement of the bottom slider 3 is achieved.

[0045] In order to facilitate the use of the hoisting mechanism 4, the hoisting mechanism 4 is preferably an electric hoist.

[0046] In order to facilitate the connection between the bottom horizontal suspension rod 7 and the suspension rope 41 and ensure the connection strength between the two, Figure 1 、 Figure 4 As shown, the two ends of the bottom transverse suspension rod 7 are respectively provided with a first connecting ring 71, and the lower end of the suspension rope 41 is connected to the bottom transverse suspension rod 7 through the first connecting ring 71. Similarly, in order to facilitate the connection of the side connecting rope 5 with the side transverse suspension rod 6 and the side slider 2, as shown in FIG. Figure 1 、 Figure 3 As shown, a second connecting ring 61 is provided at both ends of the side transverse hanger, and the lower end of the side connecting rope 5 is connected to the side transverse hanger 6 through the second connecting ring 61; a third connecting ring 23 is provided on the side slider 2, and the upper end of the side connecting rope 5 is connected to the side slider 2 through the third connecting ring 23.

[0047] In order to facilitate the connection between the connecting seat 8 and the aircraft cargo door 9 and ensure the connection strength between the two, Figure 1 、 Figure 5 As shown, the connecting base 8 includes at least one connecting plate 81 and at least one connecting clamping plate 82. One connecting clamping plate 82 is vertically mounted on the connecting plate 81. The connecting plate 81 is provided with at least one cargo door connection hole 811. The connecting clamping plate 82 is provided with a suspension rod clamping hole 821, through which the side transverse suspension rod 6 or the bottom transverse suspension rod 7 is installed. Connecting bolts pass through the lifting connection holes of the aircraft cargo door 9 and the cargo door connection holes 811 of the connecting base 8, connecting the connecting base 8 to the aircraft cargo door 9. To enable the device to be used with different aircraft models of cargo doors 9, two cargo door connection holes 811 are provided on the connecting plate 81: one circular hole and the other strip-shaped hole. The strip-shaped hole allows for adjustment of the lifting connection holes of the aircraft cargo door 9 to different positions.

[0048] In order to facilitate the connection between the side transverse hanger 6 or the bottom transverse hanger 7 and the connecting seat 8, the connecting clamping plate 82 includes a lower plate body and an upper pressure plate. The lower plate body is provided with a lower hole body, and the upper pressure plate is provided with an upper hole body. The lower plate body is detachably provided with an upper pressure plate through connecting screws 83, and the lower hole body and the upper hole body form a hanger clamping hole 821.

[0049] In order to improve the level of automation and the working accuracy of electrical components, Figure 1 As shown, the present invention is further provided with a control module 10 , and the hoisting mechanism 4 , the first power transmission mechanism, and the second power transmission mechanism are all electrically connected to the control module 10 .

[0050] In summary, the device for flipping an aircraft cargo door in mid-air of the present invention controls the back-and-forth movement of the side slider 2 and the bottom slider 3, and the contraction and extension of the lifting rope 41 of the lifting mechanism 4, thereby realizing the flipping of the aircraft cargo door in mid-air. These actions are realized through a controller, which significantly reduces the intensity of manual labor, improves the efficiency of flipping, and reduces the risk of quality problems.

Claims

1. A device for turning over an aircraft cargo door in mid-air, characterized by: The invention comprises a mounting bracket (1), two side sliders (2), two bottom sliders (3), two lifting mechanisms (4), two side connecting ropes (5), a side transverse suspension rod (6) and a bottom transverse suspension rod (7); the mounting bracket (1) comprises a transverse connecting rod (11) and two longitudinal connecting rods (12); the two longitudinal connecting rods (12) are respectively vertically arranged at two ends of the transverse connecting rod (11); a side guide rail (121) is arranged on the outer side wall of the longitudinal connecting rod (12); a bottom guide rail (122) is arranged at the bottom of the longitudinal connecting rod (12); the side guide rail (121) and the bottom guide rail (122) are both arranged along the length direction of the longitudinal connecting rod (12); A side slider (2) is matched and arranged on a side guide rail (121), and the corresponding side slider (2) can slide back and forth along the side guide rail (121); a bottom slider (3) is matched and arranged on a bottom guide rail (122), and the corresponding bottom slider (3) can slide back and forth along the bottom guide rail (122); A hoisting mechanism (4) is arranged on a bottom slider (3), and the hoisting mechanism (4) includes a hoisting rope (41). The lower ends of the hoisting ropes (41) of the two hoisting mechanisms (4) are respectively connected to the two ends of the bottom transverse suspension rod (7). The upper end of a side connecting rope (5) is connected to a side slider (2), and the lower ends of the two side connecting ropes (5) are respectively connected to the two ends of the side transverse suspension rod (6). Two connecting seats (8) are provided on the side transverse suspension rod (6), and two connecting seats (8) are provided on the bottom transverse suspension rod (7).

2. The device for turning over an aircraft cargo door in mid-air according to claim 1, characterized in that: A reinforcement connecting rod (13) is provided between the transverse connecting rod (11) and the longitudinal connecting rod (12).

3. The device for turning over an aircraft cargo door in mid-air according to claim 1, characterized in that: The corresponding side sliding block (2) slides back and forth along the side guide rail (121) through a first power transmission mechanism; The first power transmission mechanism comprises a first motor (21) and a first transmission screw (22). The first motor (21) is arranged on the longitudinal connecting rod (12). The output shaft of the first motor (21) is connected to the first transmission screw (22). The first transmission screw (22) is arranged on the longitudinal connecting rod (12) and is arranged along the length direction of the longitudinal connecting rod (12). The side slider (2) is sleeved on the first transmission screw (22) through a threaded connection.

4. The device for turning over an aircraft cargo door in mid-air according to claim 3, characterized in that: A correspondingly arranged bottom slider (3) slides back and forth along the bottom guide rail (122) via a second power transmission mechanism; The second power transmission mechanism comprises a second motor (31) and a second transmission screw (32). The second motor (31) is arranged on the longitudinal connecting rod (12). The output shaft of the second motor (31) is connected to the second transmission screw (32). The second transmission screw (32) is arranged on the longitudinal connecting rod (12) and is arranged along the length direction of the longitudinal connecting rod (12). The bottom slider (3) is sleeved on the second transmission screw (32) through a threaded connection.

5. The device for turning over an aircraft cargo door in mid-air according to claim 1, characterized in that: The hoisting mechanism (4) is an electric hoist.

6. The device for turning over an aircraft cargo door in mid-air according to claim 1, characterized in that: Both ends of the bottom transverse suspension rod (7) are respectively provided with first connecting rings (71), and the lower end of the suspension rope (41) is connected to the bottom transverse suspension rod (7) through the first connecting ring (71).

7. The device for turning over an aircraft cargo door in mid-air according to claim 1, characterized in that: The two ends of the side transverse suspension rod (6) are respectively provided with a second connecting ring (61), and the lower end of the side connecting rope (5) is connected to the side transverse suspension rod (6) through the second connecting ring (61); A third connecting ring (23) is provided on the side slider (2), and the upper end of the side connecting rope (5) is connected to the side slider (2) through the third connecting ring (23).

8. The device for turning over an aircraft cargo door in mid-air according to any one of claims 1 to 7, characterized in that: The connecting seat (8) includes at least one connecting plate (81) and at least one connecting clamping plate (82), wherein one connecting clamping plate (82) is vertically arranged on one connecting plate (81), and at least one cargo door connecting hole (811) is arranged on the connecting plate (81); A suspension rod clamping hole (821) is provided in the connecting clamping plate (82), and the side transverse suspension rod (6) or the bottom transverse suspension rod (7) is arranged through the suspension rod clamping hole (821).

9. The device for turning over an aircraft cargo door in mid-air according to claim 8, characterized in that: Two cargo door connection holes (811) are provided on the connection plate (81), one cargo door connection hole (811) is a circular hole, and the other cargo door connection hole (811) is a strip-shaped hole; The connecting clamping plate (82) includes a lower plate body and an upper pressing plate. The lower plate body is provided with a lower hole body, and the upper pressing plate is provided with an upper hole body. The lower plate body is detachably provided with the upper pressing plate through connecting screws (83). The lower hole body and the upper hole body form a boom clamping hole (821).

10. The device for turning over an aircraft cargo door in mid-air according to claim 4, characterized in that: It also includes a control module (10), and the hoisting mechanism (4), the first power transmission mechanism, and the second power transmission mechanism are all electrically connected to the control module (10).

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