Refueling ladder assembly of heavy aircraft

Abstract

The utility model discloses a refueling ladder assembly of a heavy-duty airplane, which relates to the technical field of airplane refueling, and particularly comprises a movable base, the top of the movable base is connected with a refueling platform through a lifting structure, and the top end of one side of the refueling platform far away from the lifting structure is provided with a lifting structure, a limiting frame matched with an airplane oil delivery pipe and a guide roller. A lifting structure is placed on the refueling platform; the limiting frame is located between the lifting structure and the guide roller. According to the refueling ladder assembly of the heavy aircraft, through arrangement of the lifting structure and the lifting structure and cooperative use of the first rolling wheel and the second rolling wheel, an oil conveying pipe can be driven to move, the lifting structure can change the height and position of an oil conveying pipe refueling connector, and through cooperative use of the lifting structure and the lifting structure, the oil conveying pipe refueling connector can be close to a refueling port of the aircraft; and in the process, a worker does not need to lift and pull the oil conveying pipe, the burden of the worker is relieved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft refueling, in particular to a refueling ladder component for a heavy aircraft. Background Art

[0002] When refueling an aircraft, since the aircraft refueling port is located at a high position, the staff usually needs to use an auxiliary high-altitude refueling device. Specifically, the auxiliary high-altitude refueling device is usually a ladder or a step platform.

[0003] In the prior art, some solutions for aircraft refueling ladders are disclosed, such as a heavy-duty aircraft refueling ladder assembly and suspension system disclosed in the authorized patent document with application number CN202320835025.8. When in use, this solution enables the refueling ladder to adapt to various types of aircraft by setting up a height-adjustable refueling platform, and uses the refueling platform to suspend the oil pipeline. However, the oil pipeline is heavy, and before refueling the aircraft, the staff needs to connect the refueling joint of the oil pipeline with the refueling port of the aircraft. During this process, the staff needs to pull the oil pipeline upward, causing the staff's arms to bear a large weight, which is prone to fatigue and affects the efficiency of the connection between the oil pipeline and the refueling port. In addition, during the refueling process, the reliability of the connection between the oil pipeline and the aircraft refueling port is reduced due to the influence of the gravity of the oil pipeline itself. Based on this, the present application proposes a refueling ladder assembly for heavy aircraft. Utility Model Content

[0004] The utility model provides a refueling ladder assembly for heavy aircraft, which solves the problems raised in the above background technology that in the process of lifting the oil pipeline, the workers' arms bear a large weight, are prone to fatigue, and affect the efficiency of connecting the oil pipeline with the refueling port; and the gravity of the oil pipeline itself affects the reliability of the connection between the oil pipeline and the aircraft refueling port.

[0005] The utility model provides the following technical solutions: a refueling ladder assembly for a heavy aircraft, comprising a mobile base, the top of the mobile base is connected to a refueling platform through a lifting structure, the top of the refueling platform away from the lifting structure is provided with a lifting structure, a limiting frame and a guide roller adapted to the aircraft oil pipeline, and a lifting structure is placed on the refueling platform; the limiting frame is located between the lifting structure and the guide roller, the lifting structure is located below the limiting frame, the lifting structure comprises a fixed rod fixedly connected to the refueling platform, a side of the fixed rod close to the refueling platform is movably connected to a first roller, the other end of the fixed rod is movably connected to a rotating rod, the rotating rod is connected to the fixed rod through a clamping handle, and the other end of the rotating rod is movably connected to a second roller;

[0006] The lifting structure comprises a moving frame, the top of the moving frame is connected to a lifting rod via a second ball screw, the top of the lifting rod is connected to a lifting frame adapted to the aircraft oil pipeline via a spring, and a wireless remote control switch is provided on one side of the lifting frame.

[0007] Preferably, the lifting structure includes a fixed plate fixedly connected to the mobile base, a lifting plate and a connecting plate fixed to the refueling platform, a side of the fixed plate close to the refueling platform and a side of the lifting plate close to the refueling platform are both movably connected with a groove, a ball screw 1 is movably connected in the inner cavity of the groove, the outer ring of the ball screw 1 is threadedly connected to a ball nut 1, the outer ring of the ball nut 1 is fixedly connected to a lifting rod, the lifting rod is fixed to the side of the connecting plate close to the fixed plate, and the lifting rod is fixed to the side of the lifting plate close to the fixed plate.

[0008] Preferably, a rotating motor 1 is fixedly connected to one side of the fixed rod close to the refueling platform, and the end of the output shaft of the rotating motor 1 is fixedly connected to the roller 1; the other end of the rotating rod is fixedly connected to a rotating motor 2, and the end of the output shaft of the rotating motor 2 is fixedly connected to the roller 2.

[0009] Preferably, both the rotating rod and the fixed rod are provided with a slot on one side away from the limiting frame, both ends of the clamping handle are adapted to the slot, and a T-shaped rod is movably connected to the middle of the slot arranged on the fixed rod, and the T-shaped rod is fixedly connected to the end of the clamping handle.

[0010] Preferably, an opening and closing door is movably connected to one side of the refueling platform, the opening and closing door is magnetically connected to the refueling platform, and the opening and closing door is in contact with the inner wall of the refueling platform.

[0011] Preferably, the top of the movable frame is fixedly connected to a rotating motor three, the bottom end of the ball screw two is movably connected to the movable frame, the end of the output shaft of the rotating motor three is fixedly connected to the ball screw two, the top of the lifting rod is movably connected to a guide rod, and the guide rod is fixedly connected to the bottom of the lifting frame.

[0012] Preferably, a rotating motor four is fixedly connected to one side of the inner cavity of the groove, and the end of the output shaft of the rotating motor four is connected to the ball screw one.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The refueling ladder assembly of the heavy aircraft can drive the oil pipeline to move by setting a pulling structure and a supporting structure, and using rollers one and two in coordination. The supporting structure can change the height and position of the refueling joint of the oil pipeline. At the same time, the pulling structure and the supporting structure can be used in coordination to make the refueling joint of the oil pipeline close to the refueling port of the aircraft. In this process, the staff does not need to lift and pull the oil pipeline, which reduces the burden on the staff and improves work efficiency.

[0015] 2. The refueling ladder assembly of the heavy aircraft can support the aircraft oil pipeline during the refueling process by setting a lifting structure, thereby reducing the influence of the gravity of the oil pipeline itself on the connection between the oil pipeline and the aircraft refueling port, and improving the reliability of the connection between the oil pipeline and the aircraft refueling port; through the setting of the spring, during the connection between the oil pipeline and the aircraft refueling port, the rebound force of the spring can apply a thrust to the refueling joint of the oil pipeline, making it easier for workers to move the refueling joint of the oil pipeline and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure and use of the utility model;

[0018] Figure 3 The utility model structure Figure 1 Back diagram;

[0019] Figure 4 This is a schematic diagram of the lifting structure of the utility model;

[0020] Figure 5 This is an exploded schematic diagram of the lifting structure of the utility model;

[0021] Figure 6 This is a schematic diagram of the lifting structure of the utility model;

[0022] Figure 7 The utility model structure Figure 6 Explosion diagram;

[0023] Figure 8 This is a schematic diagram of the structure of the utility model in which the clamping handle is clamped with the fixed rod and the rotating rod.

[0024] In the figure: 1. Mobile base; 2. Lifting structure; 3. Refueling platform; 4. Opening and closing door; 5. Roller 2; 6. Limiting frame; 7. Guide roller; 8. Lifting rod; 9. Lifting frame; 10. Wireless remote control switch; 11. T-bar; 12. Spring; 13. Mobile frame; 14. Rotating motor 3; 15. Ball screw 2; 16. Fixed rod; 17. Rotating rod; 18. Clamping handle; 19. Roller 1; 20. Rotating motor 1; 21. Rotating motor 2; 22. Fixed plate; 23. Connecting plate; 24. Ball screw 1; 25. Lifting rod; 26. Rotating motor 4; 27. Lifting plate; 28. Guide rod. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a refueling ladder assembly for a heavy aircraft, comprising a mobile base 1, the top of the mobile base 1 is connected to a refueling platform 3 through a lifting structure 2, the lifting structure 2 comprises a fixed plate 22 fixedly connected to the mobile base 1, a lifting plate 27 and a connecting plate 23 fixed to the refueling platform 3, a side of the fixed plate 22 close to the refueling platform 3 and a side of the lifting plate 27 close to the refueling platform 3 are both movably connected with a groove, a ball screw 1 24 is movably connected in the inner cavity of the groove, the outer ring of the ball screw 1 24 is threadedly connected with a ball nut 1, the outer ring of the ball nut 1 is fixedly connected with a lifting rod 25, the side of the connecting plate 23 close to the fixed plate 22 is fixed with the lifting rod 25, the side of the lifting plate 27 close to the fixed plate 22 is fixed with the lifting rod 25, one side of the inner cavity of the groove is fixedly connected with a rotating motor 4 26, and the end of the output shaft of the rotating motor 4 26 is connected to the ball screw 1 24 through a reducer. Through the setting of the lifting structure 2, the rotation of the rotating motor four 26 can drive the ball screw one 24 connected thereto to rotate. The rotation of the ball screw one 24 makes the ball nut one threadedly connected thereto move in the direction of the ball screw one 24. When the ball nut one moves, it drives the lifting rod 25 fixedly connected thereto to move. The lifting rod 25 drives the lifting plate 27 or the connecting plate 23 fixedly connected thereto to move, thereby realizing the change of the height of the refueling platform 3. When the present application is actually used, the rotating motor four 26 in the lifting structure 2 can work synchronously to improve the lifting efficiency of the refueling platform.

[0027] The top of the refueling platform 3 away from the lifting structure 2 is provided with a lifting structure, a limit frame 6 and a guide roller 7 adapted to the aircraft oil pipeline. The limit frame 6 is located between the lifting structure and the guide roller 7, and the lifting structure is located below the limit frame 6.

[0028] The lifting structure includes a fixed rod 16 fixedly connected to the refueling platform 3, a roller 19 is movably connected to the side of the fixed rod 16 close to the refueling platform 3, a rotating motor 20 is fixedly connected to the side of the fixed rod 16 close to the refueling platform 3, the output shaft end of the rotating motor 20 is fixedly connected to the roller 19 through a reducer, and the rotation of the rotating motor 20 can drive the roller 19 fixedly connected thereto to rotate; the other end of the fixed rod 16 is movably connected to a rotating rod 17, and the rotating rod 17 is connected to the fixed rod 16 through a clamping handle 18 Both the rotating rod 17 and the fixed rod 16 are provided with a slot on one side away from the limiting frame 6, and both ends of the handle 18 are adapted to the slot, and a T-shaped rod 11 is movably connected to the middle of the slot provided on the fixed rod 16, and the T-shaped rod 11 is fixedly connected to the end of the handle 18. Through the setting of the T-shaped rod 11, the handle 18 can be limited to prevent the handle 18 from being separated from the fixed rod 16, and after the handle 18 is separated from the slot, the handle 18 can be rotated to prevent the handle 18 from restricting the rotating rod 17, thereby facilitating the rotation of the rotating rod 17.

[0029] The other end of the rotating rod 17 is movably connected to the roller 25, and the other end of the rotating rod 17 is fixedly connected to the rotating motor 21. The end of the output shaft of the rotating motor 21 is fixedly connected to the roller 25 through a reducer. Through the setting of the rotating motor 21, the rotation of the rotating motor 21 can drive the roller 25 fixedly connected thereto to rotate, and when the rotating rod 17 is connected to the fixed rod 16 through the clamping handle 18, the roller 25 and the roller 19 are both located on the side of the fixed rod 16 close to the limit frame 6, and the aircraft oil pipeline can be clamped by using the roller 25 and the roller 19. The rotation direction of the roller 19 is opposite to that of the roller 25. The coordinated use of the roller 19 and the roller 25 can lift the aircraft oil pipeline, so as to facilitate the connection of the aircraft oil pipeline with the aircraft refueling port.

[0030] A lifting structure is placed on the refueling platform 3. Through the arrangement of the guide rollers 7, the guide rollers 7 can reduce the friction between the aircraft oil pipeline and the refueling platform 3, making it easier to lift and move the aircraft oil pipeline.

[0031] The lifting structure includes a moving frame 13, the top of the moving frame 13 is fixedly connected to a rotating motor 3 14, the top of the moving frame 13 is movably connected to a ball screw 2 15, the end of the output shaft of the rotating motor 3 14 is fixedly connected to the ball screw 2 15 through a reducer, the rotation of the rotating motor 3 14 can drive the ball screw 2 15 connected thereto to rotate, the outer ring of the ball screw 2 15 is threadedly connected to a ball nut 2, the outer ring of the ball nut 2 is fixedly connected to a lifting rod 8, the top of the lifting rod 8 is movably connected to a guide rod 28, the top of the guide rod 28 is fixedly connected to a lifting frame 9 adapted to the aircraft oil pipeline, the bottom of the lifting frame 9 is fixedly connected to a spring 12, and the other end of the spring 12 is fixedly connected to the lifting rod 8.

[0032] It can be known from the above description that when the rotating motor three 14 rotates, the ball nut two can move in the direction of the ball screw two 15, and the ball nut two drives the lifting rod 8 fixedly connected thereto to move, and the lifting rod 8 drives the lifting frame 9 to move, so that the height of the lifting frame 9 can be changed. When the refueling ladder assembly is in use, the refueling connector of the aircraft oil pipeline is supported and limited by the lifting frame 9, and the staff can connect the refueling connector of the aircraft oil pipeline with the aircraft refueling port by controlling the moving position and moving height of the lifting frame 9. In this process, the staff does not need to lift the aircraft oil pipeline all the time, which reduces the burden on the staff, and during the refueling process, the lifting structure can support the aircraft oil pipeline, reducing the influence of the gravity of the oil pipeline itself on the connection between the oil pipeline and the aircraft refueling port.

[0033] A wireless remote control switch 10 is provided on one side of the lifting frame 9, and the staff can use the wireless remote control switch 10 to control the operation of the electrical components in the refueling ladder assembly. An opening and closing door 4 is movably connected to one side of the refueling platform 3, and the opening and closing door 4 is magnetically connected to the refueling platform 3, and the opening and closing door 4 is in contact with the inner wall of the refueling platform 3.

[0034] An isolation pad is fixed to the inner wall of the lifting frame 9. The isolation pad can be made of rubber. Through the setting of the isolation pad, the position of the oil pipeline in the lifting frame 9 can be fine-tuned, which is convenient for connecting the oil pipeline to the aircraft refueling port.

[0035] The electrical components involved in this application are all prior art, and technicians in this field are familiar with their connection methods. Through these technicians, all the electrical components in this application are connected to their compatible power supplies through wires, and according to actual conditions, a suitable controller is selected to meet the control requirements. The specific connection and control sequence are described below. The electrical connection is completed in a sequential working order, and the detailed connection means are well known in the art. The following mainly introduces the working principle and process, and no further explanation of the electrical control is given.

[0036] To sum up: when the refueling ladder assembly of the heavy aircraft is in use, the staff first pulls the clamping handle 18 outward until the clamping handle 18 is separated from the clamping slot, rotates the clamping handle 18 until the clamping handle 18 does not restrict the rotating rod 17, and the staff rotates the rotating rod 17 to move the roller 2 5 away from the limiting frame 6 until the roller 2 5 does not restrict the aircraft oil pipeline. The staff moves the aircraft oil pipeline into the inner cavity of the limiting frame 6, and the refueling joint of the aircraft oil pipeline is supported by the limiting frame 6. The staff rotates the rotating rod 17 in the opposite direction to reset the rotating rod 17, and uses the clamping handle 18 to fix the rotating rod 17 and the fixed rod 16 together. At this time, the roller 1 19 and the roller 2 5 are tightly fitted with the aircraft oil pipeline. When the refueling ladder assembly moves, the refueling ladder assembly drives the aircraft oil pipeline to move. When the refueling ladder assembly moves to the bottom of the refueling port of the heavy aircraft to be refueled, the staff stands on the refueling platform and controls the lifting structure 2 to work. The lifting structure 2 drives the refueling platform 3 to rise. During the rising process of the refueling platform 3, the staff controls the lifting structure to work. The coordinated use of roller one 19 and roller two 5 can lift the oil pipeline. The staff moves the refueling joint of the oil pipeline, puts the refueling joint on the lifting frame 9, and then starts the rotating motor three 14 and adjusts the position of the moving frame 13, so that the refueling joint moves under the refueling port of the heavy aircraft until the refueling joint is close to the refueling port. The staff connects the refueling joint and the aircraft refueling port. In the process of the staff connecting the refueling joint and the aircraft refueling port, the rebound force of the spring 12 applies an upward thrust to the refueling joint, which makes the staff more labor-saving. In addition, during the refueling process, the lifting structure can support the aircraft oil pipeline to reduce the influence of the gravity of the oil pipeline itself on the connection between the oil pipeline and the aircraft refueling port.

[0037] The standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A refueling ladder assembly for a heavy aircraft, comprising a mobile base (1), characterized in that: The top of the mobile base (1) is connected to a refueling platform (3) via a lifting structure (2); the top of the refueling platform (3) away from the lifting structure (2) is provided with a lifting structure, a limit frame (6) and a guide roller (7) adapted to the aircraft oil pipeline; a lifting structure is placed on the refueling platform (3); the limit frame (6) is located between the lifting structure and the guide roller (7); the lifting structure is located below the limit frame (6); the lifting structure comprises a fixed rod (16) fixedly connected to the refueling platform (3); a side of the fixed rod (16) close to the refueling platform (3) is movably connected to a roller one (19); the other end of the fixed rod (16) is movably connected to a rotating rod (17); the rotating rod (17) is connected to the fixed rod (16) via a clamping handle (18); the other end of the rotating rod (17) is movably connected to a roller two (5); The lifting structure comprises a moving frame (13), the top of the moving frame (13) is connected to a lifting rod (8) via a second ball screw (15), the top of the lifting rod (8) is connected to a lifting frame (9) adapted to the aircraft oil pipeline via a spring (12), and a wireless remote control switch (10) is provided on one side of the lifting frame (9).

2. A refueling ladder assembly for a heavy aircraft according to claim 1, characterized in that: The lifting structure (2) comprises a fixed plate (22) fixedly connected to the mobile base (1), a lifting plate (27) and a connecting plate (23) fixed to the refueling platform (3); a side of the fixed plate (22) close to the refueling platform (3) and a side of the lifting plate (27) close to the refueling platform (3) are both movably connected with a groove; a ball screw (24) is movably connected in the inner cavity of the groove; the outer ring of the ball screw (24) is threadedly connected to a ball nut (24); the outer ring of the ball nut (24) is fixedly connected to a lifting rod (25); a side of the connecting plate (23) close to the fixed plate (22) is fixed with the lifting rod (25); and a side of the lifting plate (27) close to the fixed plate (22) is fixed with the lifting rod (25).

3. A refueling ladder assembly for a heavy aircraft according to claim 1, characterized in that: A rotating motor 1 (20) is fixedly connected to one side of the fixed rod (16) close to the refueling platform (3), and the end of the output shaft of the rotating motor 1 (20) is fixedly connected to the roller 1 (19); the other end of the rotating rod (17) is fixedly connected to a rotating motor 2 (21), and the end of the output shaft of the rotating motor 2 (21) is fixedly connected to the roller 2 (5).

4. A refueling ladder assembly for a heavy aircraft according to claim 1, characterized in that: The rotating rod (17) and the fixed rod (16) are both provided with a clamping groove on one side away from the limiting frame (6), and both ends of the clamping handle (18) are adapted to the clamping groove. A T-shaped rod (11) is movably connected to the middle of the clamping groove provided on the fixed rod (16), and the T-shaped rod (11) is fixedly connected to the end of the clamping handle (18).

5. The refueling ladder assembly for a heavy aircraft according to claim 1, characterized in that: An opening and closing door (4) is movably connected to one side of the refueling platform (3); the opening and closing door (4) is magnetically connected to the refueling platform (3), and the opening and closing door (4) is in contact with the inner wall of the refueling platform (3).

6. A refueling ladder assembly for a heavy aircraft according to claim 1, characterized in that: The top of the movable frame (13) is fixedly connected to a rotating motor three (14), the bottom end of the ball screw two (15) is movably connected to the movable frame (13), the output shaft end of the rotating motor three (14) is fixedly connected to the ball screw two (15), the top of the lifting rod (8) is movably connected to a guide rod (28), and the guide rod (28) is fixedly connected to the bottom of the lifting frame (9).

7. A refueling ladder assembly for a heavy aircraft according to claim 2, characterized in that: A rotating motor four (26) is fixedly connected to one side of the inner cavity of the groove, and the output shaft end of the rotating motor four (26) is connected to the ball screw one (24).

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