Universal airplane boarding ladder

Abstract

The invention belongs to the technical field of mechanical equipment in the aircraft industry, and provides a general airplane boarding ladder which comprises a lifting auxiliary assembly and a lifting assembly, the lifting auxiliary assembly comprises a walking mechanism, one end of the walking mechanism is connected with a platform through a lifting mechanism, and two sets of connecting holes are formed in the side wall, close to the inner side of the walking mechanism, of the platform; the folding ladder assembly comprises a first ladder assembly and a second ladder assembly which are hinged to each other, two fuselage connecting pieces are arranged at the end, away from the second ladder assembly, of the first ladder assembly, the distance between the two fuselage connecting pieces is adjustable, and when the first ladder assembly and the second ladder assembly are in a straight line state, the fuselage connecting pieces are connected with the connecting holes. When the second ladder assembly is folded to be attached to the first ladder assembly, the two fuselage connecting pieces are connected with connecting holes in an aircraft fuselage; a plurality of pedals are rotationally connected to the first ladder assembly and the second ladder assembly respectively, and angle adjusting pieces used for adjusting the angles of the pedals are arranged on the first ladder assembly and the second ladder assembly respectively. The system is high in universality and can meet the boarding requirements of various common aircrafts.

Description

Technical Field

[0001] The present invention belongs to the technical field of aviation industry mechanical equipment, and in particular relates to a universal aircraft boarding ladder. Background Art

[0002] The boarding ladder is one of the important components of the boarding bridge. It is a ladder connecting the ground and the aircraft door for passengers, crew members, ground staff and maintenance personnel to get on and off the aircraft.

[0003] Due to the wide variety of aircraft types and sizes, as well as the varying distances between aircraft doors and the ground, there are many different types of airstairs. One type of airstair is mobile, with wheels or mounted on a vehicle, allowing for free movement, and is commonly used on civil aircraft. Another type is foldable or retractable, which are smaller and are often used on small business jets. To accommodate the boarding needs of aircraft of varying sizes, airports typically need to prepare a variety of airstairs of varying sizes. Summary of the Invention

[0004] The object of the present invention is to provide a universal aircraft boarding ladder to solve the above-mentioned problems, achieve high versatility, and meet the common boarding requirements of various aircraft models.

[0005] To achieve the above-mentioned object, the present invention provides the following solution: a universal aircraft boarding ladder, comprising:

[0006] A lifting auxiliary component includes a walking mechanism, one end of which is connected to a platform via a lifting mechanism, and two groups of connecting holes are opened on the side wall of the platform close to the inner side of the walking mechanism;

[0007] A folding ladder frame assembly includes a first ladder frame and a second ladder frame, wherein one end of the first ladder frame is fixedly connected to one end of the second ladder frame by a hinge, and two sets of fuselage connecting members are provided at an end of the first ladder frame away from the second ladder frame, and the distance between the two fuselage connecting members is adjustable, and when the first ladder frame and the second ladder frame are aligned under the rotation of the hinge, the two fuselage connecting members are connected to the two connecting holes, and when the second ladder frame is folded to fit in contact with the first ladder frame, the two fuselage connecting members are connected to the connecting holes on the aircraft fuselage;

[0008] A plurality of pedals are rotatably connected to the first ladder frame and the second ladder frame respectively. An angle adjusting member for adjusting the angles of the plurality of pedals is provided on the first ladder frame and the second ladder frame respectively.

[0009] Preferably, one end of the first ladder frame away from the second ladder frame is fixedly connected to a connecting beam, a side of the connecting beam away from the first ladder frame is provided with a slide, and the two fuselage connecting members are slidably connected in the slide.

[0010] Preferably, the fuselage connecting member includes a connecting seat slidably connected to the slide, and a connecting column is hinged on the side of the connecting seat away from the connecting beam. A small angle deflection is performed between the connecting column and the connecting seat, and a slot is provided on the connecting column, which is adapted to the connecting hole.

[0011] Preferably, the angle adjustment member in the first ladder frame includes a rack and several gears slidably connected in the first ladder frame, and the several gears are respectively fixedly connected to one side of the several pedals, and the several gears are respectively transmission-connected to the rack, and a position locking member is provided between the rack and the first ladder frame.

[0012] Preferably, the position locking member includes a limit block fixedly connected to the rack, a sliding groove is opened on the limit block along the axis of the gear, a threaded column is slidably connected in the sliding groove, one end of the threaded column rotates through the side wall of the first ladder frame and is coaxially fixedly connected to a bolt head, the other end of the threaded column is threadedly connected to a nut, and the nut is slidably connected in the sliding groove.

[0013] Preferably, a hanging column is fixedly connected to one side wall of the first ladder frame, and a hook is rotatably connected to one side wall of the second ladder frame. When the second ladder frame is folded to fit with the first ladder frame through the hinge, the hook is adapted to the hanging column.

[0014] Preferably, one end of the second ladder frame away from the first ladder frame is rotatably connected to two rotating wheels.

[0015] Preferably, the walking mechanism includes a base, a plurality of walking wheels are provided at the bottom of the base, the lifting mechanism is arranged on one side of the base, an open channel is downwardly opened on the side of the base away from the lifting mechanism, the side of the second ladder frame away from the first ladder frame is abutted against the base, and the two sides of the second ladder frame are arranged corresponding to the two sides of the open channel.

[0016] Preferably, the lifting mechanism includes an outer cylinder vertically fixedly connected to the base, an inner telescopic cylinder vertically slidably connected to the outer cylinder, the platform is fixedly connected to the top of the inner telescopic cylinder, and a lifting drive member is provided between the inner telescopic cylinder and the outer cylinder.

[0017] Preferably, the lifting drive component includes a threaded sleeve vertically fixedly connected to the top of the inner side of the inner telescopic cylinder and a screw rod vertically rotatably connected to the bottom of the inner side of the outer cylinder. The screw rod is threadedly connected to the threaded sleeve, and a worm gear is fixedly provided at one end of the screw rod away from the threaded sleeve. A motor is fixedly connected to the outer cylinder, and a worm gear is fixedly provided on the output shaft of the motor. The worm gear is transmission-connected to the worm gear.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: the main function of the lifting mechanism is to change the height of the platform so that it can be connected to aircraft doors of different heights; the main function of the hinged member is to enable the second ladder frame to rotate downward around the first ladder frame, realizing the expansion and folding of the first and second ladder frames. In the expanded state, the second ladder frame can be connected to the platform to meet the boarding needs of larger aircraft. In the folded state, the overall length is shortened, meeting the boarding needs of small business jets and other aircraft. By providing two fuselage connecting members with adjustable spacing, the platform can be connected to the fuselage at different spacings of the fuselage connection holes of different aircraft models. The main function of the angle adjustment member is to adjust the step to a horizontal position regardless of the angle of the first and second ladder frames, ensuring boarding safety. Overall, the present invention provides a foldable and expandable first and second ladder frames, making the ladder frame length variable. In combination with the running mechanism and the lifting mechanism, the ladder frame can be used for multiple purposes, suitable for boarding large aircraft such as civil airliners and small aircraft such as business jets, and has high versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 is a schematic diagram of the boarding ladder of the present invention;

[0021] Figure 2 This is a schematic diagram of the first ladder frame and the second ladder frame in the folded state of the present invention;

[0022] Figure 3 This is a schematic diagram of the fuselage connecting member of the present invention;

[0023] Figure 4 This is a schematic diagram of the connection hole of the present invention;

[0024] Figure 5 This is a schematic diagram of the angle adjustment member of the present invention;

[0025] Figure 6 This is a schematic diagram of the position locking member of the present invention;

[0026] Figure 7 This is a schematic diagram of the lifting mechanism of the present invention;

[0027] Among them, 1. base; 2. opening channel; 3. walking wheel; 4. outer cylinder; 5. inner telescopic cylinder; 6. platform; 7. connecting hole; 8. handrail; 9. first ladder frame; 10. pedal; 11. hinge; 12. second ladder frame; 13. rotating wheel; 14. slot; 15. bolt head; 16. hook; 17. hanging column; 18. threaded sleeve; 19. screw; 20. motor; 21. worm gear; 22. worm; 23. gear; 24. rack; 25. limit block; 26. slide groove; 27. threaded column; 28. nut; 29. ​​slideway; 30. connecting seat; 31. connecting column; 32. connecting beam. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-Figure 7 The present invention provides a universal aircraft boarding ladder, comprising:

[0031] The lifting auxiliary component includes a walking mechanism, one end of which is connected to a platform 6 through a lifting mechanism, and two sets of connecting holes 7 are opened on the side wall of the platform 6 near the inner side of the walking mechanism;

[0032] A folding ladder assembly includes a first ladder frame 9 and a second ladder frame 12. One end of the first ladder frame 9 is fixedly connected to one end of the second ladder frame 12 by a hinge 11. Two sets of fuselage connecting members are provided at the end of the first ladder frame 9 away from the second ladder frame 12. The distance between the two fuselage connecting members is adjustable. When the first ladder frame 9 and the second ladder frame 12 are aligned under the rotation of the hinge 11, the two fuselage connecting members are connected to the two connecting holes 7. When the second ladder frame 12 is folded to fit in contact with the first ladder frame 9, the two fuselage connecting members are connected to the connecting holes on the aircraft fuselage.

[0033] A plurality of pedals 10 are rotatably connected to the first ladder frame 9 and the second ladder frame 12 , respectively. An angle adjusting member for adjusting the angles of the plurality of pedals 10 is provided on the first ladder frame 9 and the second ladder frame 12 , respectively.

[0034] The main function of the lifting mechanism is to change the height of the platform 6 so that it can be docked with aircraft doors of different heights. The main function of the hinge is to enable the second ladder frame 12 to rotate downward around the first ladder frame 9, allowing the first ladder frame 9 and the second ladder frame 12 to be deployed and folded. In the deployed state, the ladder frame 12 is connected to the platform 6 to meet the boarding needs of larger aircraft. In the folded state, the overall length is shortened, meeting the boarding needs of small aircraft such as business jets. The provision of two fuselage connectors with adjustable spacing allows for connection to the fuselage at different distances between the fuselage connection holes of different aircraft models. The main function of the angle adjustment member is to adjust the step 10 to a horizontal position regardless of the angle of the first ladder frame 9 and the second ladder frame 12, ensuring boarding safety. Overall, the present invention provides a foldable and deployable first and second ladder frames, allowing the ladder frame length to be variable. Combined with the running mechanism and the lifting mechanism, the ladder frame can be used for multiple purposes, suitable for boarding large aircraft such as civil airliners and small aircraft such as business jets, thus achieving high versatility.

[0035] According to a further optimization scheme, a connecting beam 32 is fixedly connected to one end of the first ladder frame 9 away from the second ladder frame 12 , and a slide 29 is provided on one side of the connecting beam 32 away from the first ladder frame 9 , and the two fuselage connectors are slidably connected in the slide 29 .

[0036] A further optimized solution is that the fuselage connecting part includes a connecting seat 30 that is slidably connected in the slide 29, and a connecting column 31 is hinged on the side of the connecting seat 30 away from the connecting beam 32. A small angle deflection is performed between the connecting column 31 and the connecting seat 30, and a card slot 14 is opened on the connecting column 31, which is adapted to the connecting hole 7.

[0037] like Figure 3 and Figure 4 As shown, a slot 14 adapted to the connecting hole 7 is provided on the connecting post 31 , so that the connecting post 31 can be inserted from the top of the connecting hole 7 and then moved downward to achieve a fixed connection between the connecting post 31 and the connecting hole 7 .

[0038] By adjusting the distance between the two connecting seats 30, the distance between the two connecting columns 31 can be changed. When it is necessary to directly connect the connecting columns 31 to the connecting holes of the fuselage, the distance adjustment can be conveniently achieved to adapt to different models.

[0039] The connecting column 31 and the connecting seat 30 can be deflected at a small angle, which can eliminate the stress between the connecting hole 7 and the connecting column 31 of the first ladder frame 9 within a reasonable tilt angle range.

[0040] A further optimized solution is that the angle adjustment member in the first ladder frame 9 includes a rack 24 and a plurality of gears 23 slidably connected to the first ladder frame 9, the plurality of gears 23 are respectively fixedly connected to one side of the plurality of pedals 10, and the plurality of gears 23 are respectively transmission-connected to the rack 24, and a position locking member is provided between the rack 24 and the first ladder frame 9.

[0041] To further optimize the solution, the position locking member includes a limit block 25 fixedly connected to the rack 24, and a slide groove 26 is opened on the limit block 25 along the axis of the gear 23. A threaded column 27 is slidably connected in the slide groove 26. One end of the threaded column 27 rotates through the side wall of the first ladder frame 9 and is coaxially fixedly connected to the bolt head 15. The other end of the threaded column 27 is threadedly connected to a nut 28, and the nut 28 is slidably connected in the slide groove 26.

[0042] like Figure 1 、 Figure 5 and Figure 6 As shown, when the first and second ladder frames 9, 12 are deployed, the change in the height of the platform 6 causes the inclination angles of the first and second ladder frames 9, 12 to change, and the angle of the pedals 10 to change as well. At this point, the ground crew loosens the bolt head 15 on the first ladder frame 9, allowing the threaded column 27 to slide within the slide groove 26. At this point, rotating any pedal 10 synchronizes all pedals 10 through the transmission between the gear 23 and the rack 24. When the pedals 10 are horizontal, tightening the bolt head 15 causes the bolt head 15 to drive the threaded column 27 to press the limit block 25 between the nut 28 and the inner wall of the first ladder frame 9, preventing the limit block 25 from moving and thus fixing the angle of the pedals 10.

[0043] The adjustment method of the pedal 10 on the second ladder frame 12 is the same as the above method.

[0044] like Figure 2 As shown, when the second ladder frame 12 and the first ladder frame 9 need to be folded for use, before folding, in order to avoid the pedal 10 on the second ladder frame 12 from interfering with the first ladder frame 9, the pedal 10 on the second ladder frame 12 is rotated in advance to be parallel to the length direction of the second ladder frame 12, and then the second ladder frame 12 is folded.

[0045] To further optimize the solution, a hanging column 17 is fixedly connected to one side wall of the first ladder frame 9, and a hook 16 is rotatably connected to one side wall of the second ladder frame 12. When the second ladder frame 12 is folded to fit with the first ladder frame 9 through the hinge 11, the hook 16 is adapted to the hanging column 17.

[0046] like Figure 1 and Figure 2 As shown, by hooking the hook 16 onto the hanging column 17, the second ladder frame 12 can be prevented from being accidentally unfolded during use.

[0047] According to a further optimized solution, handrails 8 are fixedly connected to both sides of the first ladder frame 9 .

[0048] According to a further optimized solution, one end of the second ladder frame 12 away from the first ladder frame 9 is rotatably connected to two rotating wheels 13 .

[0049] like Figure 1 As shown, when the height of the platform 6 is adjusted, the bottom of the second ladder frame 12 will move with the walking mechanism. The resistance during adjustment can be reduced by providing the rotating wheel 13.

[0050] A further optimized solution is that the walking mechanism includes a base 1, a plurality of walking wheels 3 are provided at the bottom of the base 1, a lifting mechanism is provided on one side of the base 1, an open channel 2 is downwardly opened on the side of the base 1 away from the lifting mechanism, and the side of the second ladder frame 12 away from the first ladder frame 9 is abutted on the base 1, and the two sides of the second ladder frame 12 are provided corresponding to the two sides of the opening channel 2.

[0051] like Figure 1 As shown, when the height of the platform 6 is higher, the bottom of the second ladder frame 12 will be close to one side of the lifting mechanism. By providing an open channel 2, passengers can step on the pedal 10 through the open channel 2, avoiding the tediousness of passengers having to step onto the base 1 first.

[0052] A further optimized solution is that the lifting mechanism includes an outer cylinder 4 vertically fixedly connected to the base 1, an inner telescopic cylinder 5 vertically slidably connected inside the outer cylinder 4, a platform 6 fixedly connected to the top of the inner telescopic cylinder 5, and a lifting drive component is provided between the inner telescopic cylinder 5 and the outer cylinder 4.

[0053] To further optimize the solution, the lifting drive component includes a threaded sleeve 18 vertically fixedly connected to the top of the inner side of the inner telescopic cylinder 5 and a screw rod 19 vertically rotatably connected to the bottom of the inner side of the outer cylinder 4. The screw rod 19 is threadedly connected to the threaded sleeve 18. The end of the screw rod 19 away from the threaded sleeve 18 is fixedly sleeved with a worm gear 21. A motor 20 is fixedly connected to the outer cylinder 4. A worm 22 is fixedly sleeved on the output shaft of the motor 20. The worm 22 is transmission-connected to the worm gear 21.

[0054] To further optimize the solution, a control unit is further provided on the base 1 , and the main function of the control unit is to control the rotation direction of the motor 20 .

[0055] like Figure 1 and Figure 7 As shown, when the height of platform 6 needs to be raised, ground staff control the motor 20 through the control unit, which drives the worm gear 21 through the worm 22. The rotation of the worm gear 21 drives the screw 19. The threaded transmission between the screw 19 and the threaded sleeve 18 causes the threaded sleeve 18 to rise, thereby raising the platform 6. When the height of platform 6 needs to be lowered, the motor 20 is controlled to rotate in the reverse direction.

[0056] The working process of this embodiment is as follows: when it needs to be used on a small aircraft, the ground staff folds the second ladder frame 12 and the first ladder frame 9, and adjusts the distance between the two connecting seats 30 according to the actual position of the connecting hole at the upper door of the aircraft model used, and then connects the connecting column 31 to the connecting hole of the fuselage, and then it can be used.

[0057] When it is needed to be used on a large aircraft, the ground crew opens the first ladder frame 9 and the second ladder frame 12 in advance, connects the connecting column 31 to the connecting hole 7, and controls the motor 20 to rotate according to the actual height of the aircraft to move the platform 6 to a suitable height before use.

[0058] During the above use process, if the angle of the pedal 10 is obviously tilted, the angle of the pedal 10 can be adjusted by loosening the bolt head 15 .

[0059] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0060] The embodiments described above are merely descriptions of preferred embodiments 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 persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A universal aircraft boarding ladder, characterized in that: include: A lifting auxiliary component comprises a walking mechanism, one end of the walking mechanism is connected to a platform (6) via a lifting mechanism, and two groups of connecting holes (7) are formed on a side wall of the platform (6) close to the inner side of the walking mechanism; A folding ladder frame assembly comprises a first ladder frame (9) and a second ladder frame (12), one end of the first ladder frame (9) and one end of the second ladder frame (12) are fixedly connected via a hinge (11), one end of the first ladder frame (9) away from the second ladder frame (12) is provided with two groups of fuselage connecting members, the distance between the two fuselage connecting members is adjustable, when the first ladder frame (9) and the second ladder frame (12) are in a straight line under the rotation action of the hinge (11), the two fuselage connecting members are connected to the two connecting holes (7), and when the second ladder frame (12) is folded to fit with the first ladder frame (9), the two fuselage connecting members are connected to the connecting holes on the fuselage of the aircraft; The first ladder frame (9) and the second ladder frame (12) are respectively rotatably connected to a plurality of pedals (10), and the first ladder frame (9) and the second ladder frame (12) are respectively provided with angle adjustment members for adjusting the angles of the plurality of pedals (10).

2. A universal aircraft boarding ladder according to claim 1, characterized in that: One end of the first ladder frame (9) away from the second ladder frame (12) is fixedly connected to a connecting beam (32), a side of the connecting beam (32) away from the first ladder frame (9) is provided with a slideway (29), and the two fuselage connecting members are slidably connected in the slideway (29).

3. A universal aircraft boarding ladder according to claim 2, characterized in that: The fuselage connecting member comprises a connecting seat (30) slidably connected in the slideway (29); a connecting column (31) is hingedly connected to a side of the connecting seat (30) away from the connecting beam (32); a small angle deflection is performed between the connecting column (31) and the connecting seat (30); a slot (14) is provided on the connecting column (31); and the slot (14) is adapted to the connecting hole (7).

4. A universal aircraft boarding ladder according to claim 1, characterized in that: The angle adjustment member in the first ladder frame (9) comprises a rack (24) and a plurality of gears (23) slidably connected in the first ladder frame (9); the plurality of gears (23) are respectively fixedly connected to one side of the plurality of pedals (10); the plurality of gears (23) are respectively transmission-connected to the rack (24); and a position locking member is provided between the rack (24) and the first ladder frame (9).

5. A universal aircraft boarding ladder according to claim 4, characterized in that: The position locking member comprises a limit block (25) fixedly connected to the rack (24); a slide groove (26) is provided on the limit block (25) along the axis of the gear (23); a threaded column (27) is slidably connected in the slide groove (26); one end of the threaded column (27) rotates through the side wall of the first ladder frame (9) and is coaxially fixedly connected with a bolt head (15); the other end of the threaded column (27) is threadedly connected with a nut (28); and the nut (28) is slidably connected in the slide groove (26).

6. The universal aircraft boarding ladder according to claim 1, characterized in that: A hanging column (17) is fixedly connected to one side wall of the first ladder frame (9), and a hook (16) is rotatably connected to one side wall of the second ladder frame (12); when the second ladder frame (12) is folded to fit with the first ladder frame (9) through the hinge (11), the hook (16) is matched with the hanging column (17).

7. The universal aircraft boarding ladder according to claim 1, characterized in that: One end of the second ladder frame (12) away from the first ladder frame (9) is rotatably connected to two rotating wheels (13).

8. The universal aircraft boarding ladder according to claim 1, characterized in that: The walking mechanism comprises a base (1), a plurality of walking wheels (3) are arranged at the bottom of the base (1), the lifting mechanism is arranged on one side of the base (1), an opening channel (2) is downwardly opened on a side of the base (1) away from the lifting mechanism, the second ladder frame (12) is abutted against the base (1) on a side away from the first ladder frame (9), and two sides of the second ladder frame (12) are arranged correspondingly to two sides of the opening channel (2).

9. A universal aircraft boarding ladder according to claim 8, characterized in that: The lifting mechanism comprises an outer cylinder (4) vertically fixedly connected to the base (1), an inner telescopic cylinder (5) vertically slidably connected inside the outer cylinder (4), the platform (6) fixedly connected to the top of the inner telescopic cylinder (5), and a lifting drive member is provided between the inner telescopic cylinder (5) and the outer cylinder (4).

10. A universal aircraft boarding ladder according to claim 9, characterized in that: The lifting drive member comprises a threaded sleeve (18) vertically fixedly connected to the top of the inner side of the inner telescopic cylinder (5) and a screw rod (19) vertically rotatably connected to the bottom of the inner side of the outer cylinder (4); the screw rod (19) is threadedly connected in the threaded sleeve (18); one end of the screw rod (19) away from the threaded sleeve (18) is fixedly sleeved with a worm gear (21); a motor (20) is fixedly connected in the outer cylinder (4); a worm gear (22) is fixedly sleeved on the output shaft of the motor (20); and the worm gear (22) is drivingly connected to the worm gear (21).

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