A mobile support frame for passenger boarding stairs

Abstract

This utility model relates to the field of boarding stairs technology, specifically to a mobile support frame for boarding passenger stairs, including a base, a boarding stairs body hinged to the base, two symmetrically distributed first connecting blocks fixedly connected to the upper surface of the base, and hydraulic cylinders hinged to the first connecting blocks, two symmetrically distributed second connecting blocks fixedly connected to the lower surface of the boarding stairs body, two symmetrically distributed guide rails fixedly connected to the top of the base, slide blocks slidably connected to the guide rails, and a mounting plate fixedly connected to the top of the two slide blocks, a fixing plate fixedly connected laterally to the outer surface of the base, a servo motor fixedly connected to the bottom center of the fixing plate, a drive plate fixedly connected to the output shaft end of the servo motor, and a mounting block fixedly connected to the upper surface of the drive plate away from the output shaft; this application can provide auxiliary support for the boarding stairs body, reduce the weight borne by the two hydraulic cylinders, and facilitate the long-term use of the hydraulic cylinders.

Description

Technical Field

[0001] This utility model relates to the field of boarding stairs technology, and more specifically, to a mobile support for passenger boarding stairs. Background Technology

[0002] An aircraft boarding stairs is a device used to lift passengers or cargo, providing convenient access for passengers. The use of boarding stairs avoids passengers facing steep climbs such as ramps or stairs, and reduces the burden on luggage carriers, which is especially important for the elderly and people with mobility impairments. The mobile support frame for the boarding stairs is an important component of the boarding stairs vehicle, serving as a structural component to support and move the vehicle. It typically consists of a chassis, wheels, and support legs, and features flexible movement and stable support. Height adjustment of the boarding stairs generally uses hydraulic cylinders for driving adjustment; however, existing technology has the following shortcomings in its use:

[0003] When adjusting the height of the boarding ladder, most of its weight is supported by hydraulic cylinders. Over time, these cylinders can be damaged, leading to reduced stability.

[0004] Therefore, there is an urgent need for a mobile support structure for passenger boarding stairs to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a mobile support frame for passenger boarding stairs, which solves the problem that when adjusting the height of the boarding stairs, most of the weight is supported by hydraulic cylinders, which can easily damage the hydraulic cylinders and reduce the stability of the support under long-term use.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The application is as follows:

[0008] A mobile support frame for an airplane boarding ladder includes a base, on which a boarding ladder body is hinged. Two symmetrically distributed first connecting blocks are fixedly connected to the upper surface of the base, and hydraulic cylinders are hinged to the first connecting blocks. Two symmetrically distributed second connecting blocks are fixedly connected to the lower surface of the boarding ladder body. Two symmetrically distributed guide rails are fixedly connected to the top of the base, and slide blocks are slidably connected to the guide rails. A mounting plate is fixedly connected to the top of both slide blocks. A fixing plate is horizontally fixedly connected to the outer surface of the base. A servo motor is fixedly connected to the center of the bottom of the fixing plate. A drive plate is fixedly connected to the output shaft end of the servo motor. A mounting block is fixedly connected to the upper surface of the drive plate away from the output shaft. A connecting plate is fixedly connected to the bottom of the mounting plate. A sliding groove is formed on the lower surface of the connecting plate. Several fixing rods are provided on the upper surface of the mounting plate, and an arc-shaped support plate is fixedly connected to the top of the several fixing rods.

[0009] As a preferred technical solution of this application, four rectangular horizontal plates are fixedly connected to the outer surface of the base. A threaded rod is threaded through the horizontal plate. An adjusting block is fixedly connected to the top of the threaded rod. A pressure plate is rotatably connected to the end of the threaded rod away from the adjusting block through a bearing. A rubber pad is installed on the lower surface of the pressure plate.

[0010] As a preferred technical solution of this application, a guide rod is fixedly connected to the top of the pressure plate, and the guide rod movably passes through the horizontal plate.

[0011] As a preferred technical solution of this application, pulleys are installed at the four corners of the bottom of the base.

[0012] As a preferred technical solution of this application, the hydraulic rod ends of the two hydraulic cylinders are respectively hinged to the two second connecting blocks, the two slide blocks are symmetrically distributed about the central axis of the base, the mounting block is located in the slide groove, and the cross-section of the mounting block is circular.

[0013] As a preferred technical solution of this application, the fixing rod is fixedly connected to the mounting plate, and a plurality of the fixing rods are arranged linearly at equal intervals.

[0014] As a preferred technical solution of this application, the arc-shaped support plate is located between the hydraulic cylinder and the main body of the boarding ladder.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By using guide rails, slides, mounting plates, fixing plates, servo motors, drive plates, mounting blocks, connecting plates, slide grooves, fixing rods, and arc-shaped support plates, auxiliary support can be provided for the main body of the boarding ladder, reducing the weight borne by the two hydraulic cylinders and facilitating their long-term use.

[0017] 2. Through the cooperation of the set horizontal plate, threaded rod, adjusting block, pressure plate, rubber pad and guide rod, the four adjusting blocks can be rotated in sequence to make the four rubber pads fit tightly with the ground, which can position the base and the boarding ladder body, and facilitate subsequent use. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of a mobile support frame for passenger boarding stairs provided in this application. Figure 1 .

[0019] Figure 2 A schematic diagram of the overall structure of a mobile support frame for passenger boarding stairs provided in this application. Figure 2 .

[0020] Figure 3 This application provides a schematic diagram of the connection structure between the drive plate and the mounting block in a mobile support structure for an airport boarding ladder vehicle.

[0021] Figure 4 This application provides a schematic diagram of the connection structure between the mounting plate and the connecting plate in a mobile support frame for passenger boarding stairs.

[0022] The image shows:

[0023] 1. Base; 2. Boarding ladder body; 3. First connecting block; 4. Hydraulic cylinder; 5. Second connecting block; 6. Guide rail; 7. Slide; 8. Mounting plate; 9. Fixing plate; 10. Servo motor; 11. Drive plate; 12. Mounting block; 13. Connecting plate; 14. Slide groove; 15. Fixing rod; 16. Arc-shaped support plate; 17. Horizontal plate; 18. Threaded rod; 19. Adjusting block; 20. Pressure plate; 21. Rubber pad; 22. Guide rod; 23. Pulley. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used to distinguish the description and should not be construed as indicating or implying relative importance. Example

[0026] like Figure 1-4As shown in this embodiment, a mobile support for a boarding ladder vehicle includes a base 1, with a boarding ladder body 2 hinged to the base 1. The boarding ladder body 2 is moved to a designated position. Two symmetrically distributed first connecting blocks 3 are fixedly connected to the upper surface of the base 1, and hydraulic cylinders 4 are hinged to the first connecting blocks 3. Two symmetrically distributed second connecting blocks 5 are fixedly connected to the lower surface of the boarding ladder body 2. The hydraulic rod ends of the two hydraulic cylinders 4 are respectively hinged to the two second connecting blocks 5. When the two hydraulic cylinders 4 operate synchronously, in conjunction with the two first connecting blocks 3 and the two second connecting blocks 5, they can... The height of the boarding ladder body 2 is adjusted so that the boarding platform of the boarding ladder body 2 moves to the side of the cabin door. Two symmetrically distributed guide rails 6 are fixedly connected to the top of the base 1. Slide seats 7 are slidably connected to the guide rails 6. The two slide seats 7 are symmetrically distributed about the central axis of the base 1. A mounting plate 8 is fixedly connected to the top of the two slide seats 7. A fixing plate 9 is fixedly connected to the outer surface of the base 1 laterally. A servo motor 10 is fixedly connected to the bottom center of the fixing plate 9. After the height of the boarding ladder body 2 is adjusted, the servo motor 10 is started. A drive plate 1 is fixedly connected to the output shaft end of the servo motor 10. 1. A servo motor 10 drives a drive plate 11 to rotate via an output shaft. A mounting block 12 is fixedly connected to the end of the upper surface of the drive plate 11 away from the output shaft. The mounting block 12 moves along the rotation trajectory of the drive plate 11. A connecting plate 13 is fixedly connected to the bottom of the mounting plate 8. A groove 14 is formed on the lower surface of the connecting plate 13. The mounting block 12 is located in the groove 14. The cross-section of the mounting block 12 is circular. When the mounting block 12 moves, its position in the groove 14 changes. Several fixing rods 15 are provided on the upper surface of the mounting plate 8. The fixing rods 15 are fixedly connected to the mounting plate 8. The fixed rods 15 are arranged linearly and equidistantly. The connecting plate 13 and the mounting plate 8 move away from the hydraulic cylinder 4. The two slides 7 slide on the two guide rails 6 respectively. The top of several fixed rods 15 are fixedly connected to an arc-shaped support plate 16. The arc-shaped support plate 16 is located between the hydraulic cylinder 4 and the boarding ladder body 2. Through several fixed rods 15, the arc-shaped support plate 16 moves synchronously with the mounting plate 8, and finally the outer arc surface of the arc-shaped support plate 16 abuts against the outer surface of the boarding ladder body 2, which can play an auxiliary support role for the boarding ladder body 2 and reduce the weight borne by the two hydraulic cylinders 4.

[0027] like Figure 1 and Figure 2As shown, four rectangular horizontal plates 17 are fixedly connected to the outer surface of the base 1. Threaded rods 18 are vertically threaded through the horizontal plates 17. Adjusting blocks 19 are fixedly connected to the top of the threaded rods 18. A pressure plate 20 is rotatably connected to the end of the threaded rod 18 away from the adjusting blocks 19 via a bearing. Rubber pads 21 are installed on the lower surface of the pressure plate 20. A guide rod 22 is fixedly connected to the top of the pressure plate 20. The guide rod 22 movably passes through the horizontal plates 17. By rotating the four adjusting blocks 19 in sequence, the threaded rods 18 are rotated, causing the pressure plate 20 and rubber pads 21 to move downwards. The guide rod 22 guides the pressure plate 20. When the lower surfaces of the four rubber pads 21 are all in close contact with the ground, the base 1 and the boarding ladder body 2 are positioned for easy use.

[0028] like Figure 1 and Figure 2 As shown, casters 23 are installed at the four corners of the bottom of the base 1. The four casters 23 facilitate the movement of the base 1 and the boarding ladder body 2, making it convenient and flexible to use.

[0029] The working principle of the above embodiment is as follows: The boarding ladder body 2 is moved to a designated position, and four adjusting blocks 19 are rotated sequentially. These adjusting blocks 19 drive the threaded rod 18 to rotate, causing the pressure plate 20 and rubber pad 21 to move downwards. The guide rod 22 guides the pressure plate 20. When the lower surfaces of all four rubber pads 21 are in close contact with the ground, the base 1 and the boarding ladder body 2 are positioned. The servo motor 10 is electrically connected to an external control power supply. When the two hydraulic cylinders 4 operate synchronously, in conjunction with the two first connecting blocks 3 and the two second connecting blocks 5, the height of the boarding ladder body 2 can be adjusted, moving the boarding platform of the boarding ladder body 2 to the side of the cabin door. After the height adjustment of the boarding ladder body 2 is completed, the servo motor 10 is started. The servo motor 10 drives the drive plate 11 to rotate through the output shaft, and the mounting block 12 follows the drive plate. As the rotation trajectory of 11 moves, the two slide blocks 7 are slidably connected to the two guide rails 6 respectively. Therefore, when the mounting block 12 moves, its position in the slide groove 14 changes. Thus, through the cooperation of the output shaft, drive plate 11, mounting block 12, guide rail 6, slide block 7, connecting plate 13 and slide groove 14, the connecting plate 13 and mounting plate 8 can be driven to move away from the hydraulic cylinder 4. The two slide blocks 7 slide on the two guide rails 6 respectively. Through several fixed rods 15, the arc-shaped support plate 16 moves synchronously with the mounting plate 8. Finally, the outer arc surface of the arc-shaped support plate 16 abuts against the outer surface of the boarding ladder body 2, which can play an auxiliary support role for the boarding ladder body 2, reduce the weight borne by the two hydraulic cylinders 4, facilitate the long-term use of the hydraulic cylinders 4, and ensure the overall stability of the boarding ladder body 2.

[0030] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A mobile support frame for passenger boarding stairs, characterized in that: Includes a base (1), on which a boarding ladder body (2) is hinged. Two symmetrically distributed first connecting blocks (3) are fixedly connected to the upper surface of the base (1), and a hydraulic cylinder (4) is hinged to each of the first connecting blocks (3). Two symmetrically distributed second connecting blocks (5) are fixedly connected to the lower surface of the boarding ladder body (2). Two symmetrically distributed guide rails (6) are fixedly connected to the top of the base (1), and slide blocks (7) are slidably connected to the guide rails (6). A mounting plate (8) is fixedly connected to the top of both slide blocks (7). The outer surface of the base (1) is horizontally... A fixed plate (9) is fixedly connected. A servo motor (10) is fixedly connected at the bottom center of the fixed plate (9). A drive plate (11) is fixedly connected to the output shaft end of the servo motor (10). A mounting block (12) is fixedly connected to the end of the upper surface of the drive plate (11) away from the output shaft. A connecting plate (13) is fixedly connected to the bottom of the mounting plate (8). A sliding groove (14) is opened on the lower surface of the connecting plate (13). Several fixing rods (15) are provided on the upper surface of the mounting plate (8). An arc-shaped support plate (16) is fixedly connected to the top of several fixing rods (15).

2. The mobile support frame for passenger boarding stairs according to claim 1, characterized in that, The base (1) has four rectangular horizontal plates (17) fixedly connected to its outer surface. The horizontal plates (17) are vertically threaded through and connected to a threaded rod (18). An adjusting block (19) is fixedly connected to the top of the threaded rod (18). The end of the threaded rod (18) away from the adjusting block (19) is rotatably connected to a pressure plate (20) via a bearing. A rubber pad (21) is installed on the lower surface of the pressure plate (20).

3. A mobile support frame for passenger boarding stairs according to claim 2, characterized in that, A guide rod (22) is fixedly connected to the top of the pressure plate (20), and the guide rod (22) moves through the horizontal plate (17).

4. The mobile support frame for passenger boarding stairs according to claim 1, characterized in that, The base (1) is equipped with pulleys (23) at the four corners of its bottom.

5. A mobile support frame for passenger boarding stairs according to claim 1, characterized in that, The hydraulic rod ends of the two hydraulic cylinders (4) are respectively hinged to the two second connecting blocks (5), the two slide blocks (7) are symmetrically distributed about the central axis of the base (1), the mounting block (12) is located in the slide groove (14), and the cross-section of the mounting block (12) is circular.

6. A mobile support frame for passenger boarding stairs according to claim 1, characterized in that, The fixing rod (15) is fixedly connected to the mounting plate (8), and several fixing rods (15) are arranged linearly at equal intervals.

7. A mobile support frame for passenger boarding stairs according to claim 1, characterized in that, The arc-shaped support plate (16) is located between the hydraulic cylinder (4) and the boarding ladder body (2).

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