Foldable and telescopic airstairs made of composite materials

Abstract

The utility model relates to the technical field of composite material working ladders, and discloses a composite material foldable and telescopic aeroladder which comprises a main ladder section, a hinge block is arranged at the top of the main ladder section, and the hinge block is connected with a first foldable ladder section. The composite material can be folded and telescopic to achieve the transportation and storage state, the supporting assembly is hinged to the main ladder section and the supporting block, the length and direction of a supporting stud in the supporting assembly can be adjusted, and the supporting block can be attached to a fuselage conveniently; pedal operation can be performed to complete boarding through the first pedal and the first mounting sleeve shell, the second mounting sleeve shell and the second pedal and the two third mounting sleeve shells and the third pedals, main components in the scheme are made of composite materials, the weight is light, the strength is high, and compared with a traditional metal boarding ladder, the overall structure is obviously reduced in weight, convenient to move and high in practicability. The structure adopts a retractable and foldable design, the space size occupied in the aircraft is reduced, the structure is reliable, the boarding stability is good, and shaking is avoided during boarding.

Description

Technical Field

[0001] The utility model relates to the technical field of composite material working ladders, in particular to a composite material foldable and retractable boarding ladder. Background Art

[0002] The boarding ladder is mainly used by pilots and ground maintenance personnel to get on and off the aircraft. The built-in boarding ladder is usually stored in the aircraft fuselage. When the pilot or ground crew needs to get on or off the aircraft, the ground staff will first unfold the boarding ladder. When the pilot enters the aircraft and is ready, the ground staff will operate it to retract it into the fuselage.

[0003] However, the following problems still exist in the actual operation process: most of the existing working ladders are made of metal materials such as steel or aluminum alloy, which are generally heavy and inconvenient to fold or put away, making them bulky and inconvenient to move, and they cannot meet the requirements of environmental adaptability. For this reason, the utility model provides a composite material foldable and retractable boarding ladder. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a composite material foldable and retractable boarding ladder, which has the advantages of being foldable and retractable and solves the problems raised in the background technology.

[0005] The utility model provides the following technical solution: a composite material foldable and retractable boarding ladder, comprising a main ladder section, a hinge block is arranged on the top of the main ladder section, the hinge block is connected with a foldable ladder section one, a connecting plate is fixedly installed on the side of the foldable ladder section one, a hook is fixedly installed on the side of the connecting plate, the main ladder section is internally slidably connected with a retractable ladder section two, the retractable ladder section two is internally slidably connected with a retractable ladder section three, the retractable ladder section three is internally slidably connected with a retractable ladder section four, and the retractable ladder section four is internally slidably connected with a retractable ladder section five.

[0006] Preferably, a support assembly is hingedly connected to the inner side of the telescopic ladder section 2, and a support block is fixedly mounted on the side of the support assembly.

[0007] Preferably, a mounting sleeve 2 is provided on the surface of the telescopic ladder section 2 and the telescopic ladder section 4, and a foot pedal 2 is fixedly mounted on the side of the mounting sleeve 2.

[0008] Preferably, a mounting sleeve three is provided on the surface of the telescopic ladder section three, and a foot pedal three is fixedly connected to the side surface of the mounting sleeve three.

[0009] Preferably, a mounting sleeve 1 is provided on the surface of the retractable ladder section 5, and a foot pedal 1 is fixedly connected to the side of the mounting sleeve 1.

[0010] Preferably, the number of the supporting blocks is two groups.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The composite material foldable and retractable boarding ladder is provided with a hook hung on a frame beam of an aircraft, a support block is closely attached to a fuselage, the foldable ladder section 1 is unfolded, and the retractable ladder sections 2, 3, 4 and 5 are automatically slid out to a designed position while being lowered. In this state, personnel can get on and off the aircraft through the boarding ladder. After boarding, the boarding ladder is retracted into the cabin, the retractable ladder sections 2, 3, 4 and 5 are pushed into the main ladder section, and the foldable ladder section 1 is folded, so as to achieve a transportation and storage state. The support assembly and The main ladder section and the support block are hinged, and the support studs in the support assembly can adjust the length and direction to facilitate the support block to fit the fuselage. By using foot pedal one and mounting cover one, mounting cover two and foot pedal two, and two sets of mounting cover three and foot pedal three, boarding can be completed by foot-operation. The main components in this solution are made of composite materials, which are light in weight and high in strength. The overall structure is significantly lighter than traditional metal boarding ladders and is easy to move. The structure adopts a retractable and foldable design, which reduces the space occupied in the aircraft. The structure is reliable and has good stability and does not shake during boarding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model device;

[0014] Figure 2 For this utility model Figure 1 Look at the structural diagram;

[0015] Figure 3 For this utility model Figure 1 Schematic diagram of the structure on the left.

[0016] In the figure: 1. hook; 2. connecting plate; 3. foldable ladder section 1; 4. main ladder section; 5. support block; 6. support assembly; 7. retractable ladder section 2; 8. retractable ladder section 3; 9. retractable ladder section 4; 10. retractable ladder section 5; 11. foot pedal 1; 12. installation shell 1; 13. installation shell 2; 14. foot pedal 2; 15. installation shell 3; 16. foot pedal 3; 17. hinge block. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figure 1-3 A composite material foldable and retractable boarding ladder, comprising a main ladder section 4, a hinge block 17 is arranged on the top of the main ladder section 4, the hinge block 17 is connected to a foldable ladder section 1 3, a connecting plate 2 is fixedly installed on the side of the foldable ladder section 1 3, a hook 1 is fixedly installed on the side of the connecting plate 2, the main ladder section 4 is internally slidably connected to a retractable ladder section 2 7, the retractable ladder section 2 7 is internally slidably connected to a retractable ladder section 3 8, the retractable ladder section 3 8 is internally slidably connected to a retractable ladder section 4 9, the retractable ladder section 4 9 is internally slidably connected to a retractable ladder section 5 10, the retractable ladder section 2 The inner side of 7 is hinged with a support assembly 6, and a support block 5 is fixedly installed on the side of the support assembly 6. The support studs in the support assembly 6 can adjust the length and direction to facilitate the support block 5 to fit the fuselage. The surfaces of the telescopic ladder section 2 7 and the telescopic ladder section 4 9 are provided with a mounting cover 2 13, and a foot pedal 2 14 is fixedly installed on the side of the mounting cover 2 13. The surface of the telescopic ladder section 3 8 is provided with a mounting cover 3 15, and a foot pedal 3 16 is fixedly connected to the side of the mounting cover 3 15. The surface of the telescopic ladder section 5 10 is provided with a mounting cover 1 12, and the side of the mounting cover 1 12 A foot pedal 11 is fixedly connected, and the foot pedal 11 and the mounting shell 12, the mounting shell 2 13 and the foot pedal 2 14 and two sets of mounting shells 3 15 and the foot pedal 3 16 can be used to complete the boarding by foot operation. The number of the support blocks 5 is two groups. By hanging the hook 1 on the aircraft frame beam, the support block 5 is close to the fuselage, the foldable ladder section 1 3 is unfolded, and the retractable ladder section 2 7, the retractable ladder section 3 8, the retractable ladder section 4 9, and the retractable ladder section 5 10 are automatically slid out to the designed position while being lowered. In this state, personnel can get on and off the aircraft through the boarding ladder, and the boarding structure is After the boarding ladder is loaded, the boarding ladder is retracted into the cabin, the retractable ladder section 2 7, the retractable ladder section 3 8, the retractable ladder section 4 9, and the retractable ladder section 5 10 are pushed into the main ladder section 4, and the foldable ladder section 1 3 is folded to achieve the transportation and storage state. The supporting assembly 6 is hinged with the main ladder section 4 and the supporting block 5. The main components in this solution are made of composite materials, which are light in weight and high in strength. The overall structure is significantly lighter than the traditional metal boarding ladder and is easy to move. The structure adopts a retractable and foldable design, which reduces the space occupied in the aircraft. The structure is reliable and has good stability and does not shake during boarding.

[0019] Working principle: During operation, by hanging the hook 1 on the aircraft frame beam, the support block 5 is close to the fuselage, the foldable ladder section 1 3 is unfolded, and the retractable ladder section 2 7, the retractable ladder section 3 8, the retractable ladder section 4 9, and the retractable ladder section 5 10 are automatically slid out to the designed position while being lowered. In this state, people can get on and off the aircraft through the boarding ladder. After boarding, the boarding ladder is retracted into the cabin, and the retractable ladder section 2 7, the retractable ladder section 3 8, the retractable ladder section 4 9, and the retractable ladder section 5 10 are pushed into the main ladder section 4, and the foldable ladder section 1 3 is folded to achieve the transportation and storage state. The support assembly 6 is hinged to the main ladder section 4 and the support block 5. The support studs in the support assembly 6 can adjust the length and direction to facilitate the support block 5 to fit the fuselage. By using the foot pedal 1 11 and the installation shell 1 12, the installation shell 2 13 and the foot pedal 2 14 and the two sets of installation shells 3 15 and the foot pedal 3 16, the boarding can be completed by foot operation.

[0020] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite material foldable and retractable boarding ladder, characterized in that: The invention comprises a main stair section (4), the top of which is provided with an articulated block (17), the articulated block (17) being connected to a foldable stair section one (3), the side of which is fixedly provided with a connecting plate (2), the side of which is fixedly provided with a hook (1), the main stair section (4) being internally slidably connected to a telescopic stair section two (7), the internal of which is slidably connected to a telescopic stair section three (8), the internal of which is slidably connected to a telescopic stair section four (9), and the internal of which is slidably connected to a telescopic stair section five (10).

2. The composite material foldable and retractable boarding ladder according to claim 1, characterized in that: A support assembly (6) is hingedly connected to the inner side of the telescopic ladder section 2 (7), and a support block (5) is fixedly mounted on the side of the support assembly (6).

3. The composite material foldable and retractable boarding ladder according to claim 1, characterized in that: The surfaces of the telescopic ladder section 2 (7) and the telescopic ladder section 4 (9) are provided with a mounting casing 2 (13), and a footrest 2 (14) is fixedly mounted on the side of the mounting casing 2 (13).

4. The composite material foldable and retractable boarding ladder according to claim 1, characterized in that: The surface of the telescopic ladder section three (8) is provided with a mounting casing three (15), and the side of the mounting casing three (15) is fixedly connected with a foot pedal three (16).

5. The composite material foldable and retractable boarding ladder according to claim 1, characterized in that: The surface of the telescopic ladder section five (10) is provided with a mounting casing one (12), and the side of the mounting casing one (12) is fixedly connected with a foot pedal one (11).

6. The composite material foldable and retractable boarding ladder according to claim 2, characterized in that: The number of the supporting blocks (5) is two groups.

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