Outer elevator working ladder

Abstract

The utility model discloses an outer elevator working ladder, belongs to the technical field of aircraft maintenance auxiliary equipment, and aims to solve the problems that a worker is inconvenient to replace a maintenance tool, the positioning stability of the working ladder is poor, and potential safety hazards exist. Threaded rods are rotationally connected to the positions, close to the corners, of the top of the bottom plate, rotating discs are fixedly connected to the tops of the multiple threaded rods, fixed suction cups are rotationally connected to the bottoms of the multiple threaded rods, L-shaped supporting plates are fixedly connected to the positions, close to the two sides, of the top of the bottom plate, and a ladder is fixedly connected to the outer side of one L-shaped supporting plate. According to the tool box lifting device, the traction mechanism is arranged, the servo motor drives the rotating shaft to rotate, so that the winding roller winds and lifts the traction rope, tools are conveyed and replaced by lifting the tool box, the situation that a lifting assembly needs to integrally fall down when the tools are replaced is avoided, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aircraft maintenance auxiliary equipment, in particular to an external elevator working ladder. Background Art

[0002] The outer elevator is a part of the leading edge of the aircraft wing. It can be extended or retracted during takeoff and landing. The main function of the outer elevator is to increase the lift of the aircraft and improve the low-speed flight performance. When the outer elevator is extended, it will change the shape of the wing and increase the convexity of the wing, so that the aircraft can still maintain sufficient lift when flying at low speeds and reduce the risk of stall. Routine maintenance of the outer elevator requires the use of a work ladder, which is also called an external bridge. It is a work platform that can be raised and lowered and moved, allowing technicians to perform various necessary work on the outside of the aircraft.

[0003] In the prior art, there is a patent announcement number CN214456650U for an aircraft maintenance work ladder, which includes a bottom plate, a lifting device fixedly installed on the top of the bottom plate, a load-bearing plate fixedly installed on the top of the lifting device, a first fence movably installed on the front and rear sides of the top of the load-bearing plate, a second fence movably installed on the top of the load-bearing plate and on the left side of the first fence, one end of which is in contact with the first fence, a positioning block with one end extending to the inside of the load-bearing plate fixedly installed on the bottom of the second fence, and a connecting groove is provided inside the first fence. The device avoids the large size of the aircraft maintenance work ladder, which affects the work efficiency of the staff, and does not occupy much space, thereby causing waste of resources, and is convenient for users to use; however, there are still the following deficiencies in actual use: from a practical point of view, when the device is used, the staff carries the maintenance tools to a high place to repair the aircraft, and when the maintenance personnel need additional tools, they can only drop the lifting device as a whole to replace the tools, which is time-consuming and labor-intensive and affects the work efficiency; at the same time, the device is only self-lockingly positioned by the pulley itself, and the stability is poor. During the maintenance process, the work ladder is prone to slide, which poses a safety hazard.

[0004] Therefore, an external elevator working ladder is needed to solve the problems in the prior art that it is inconvenient for workers to replace maintenance tools and the working ladder has poor positioning stability and poses a safety hazard. Utility Model Content

[0005] The purpose of the utility model is to provide an external elevator working ladder to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an external elevator working ladder, comprising a base plate, a plurality of pulleys fixedly connected to the bottom of the base plate, threaded rods rotatably connected to the top of the base plate near the corners, a plurality of threaded rods are fixedly connected to the tops of the plurality of threaded rods, a plurality of fixed suction cups are rotatably connected to the bottoms of the plurality of threaded rods, L-shaped support plates are fixedly connected to the top of the base plate near the two sides, an escalator is fixedly connected to the outer side of one of the L-shaped support plates, and two hand push rods are fixedly connected to the outer side of the other L-shaped support plate, a lifting assembly is installed on the top of the base plate, a workbench is installed on the top of the lifting assembly, a door panel is installed on one side of the workbench, and a traction mechanism is arranged at the front end of the workbench.

[0007] It should be noted in the solution that a plurality of threaded holes corresponding to the threaded rods are formed through the top of the bottom plate.

[0008] It is further worth mentioning that a plurality of the turntable tops are fixedly connected with a rocker.

[0009] It should be further explained that the outer walls of the two hand push rods are fixedly connected with anti-slip sleeves.

[0010] As a preferred embodiment, a hinge corresponding to the door panel is installed on one side of the workbench.

[0011] As a preferred embodiment, the traction mechanism includes a servo motor fixedly connected to the inside of the workbench, the front end of the workbench is rotatably connected to a rotating shaft corresponding to the servo motor, the front end of the rotating shaft is fixedly connected to a winding roller, the outer surface of the winding roller is fixedly connected to a traction rope, and the end of the traction rope is fixedly connected to a toolbox.

[0012] As a preferred implementation, the output end of the servo motor passes through the front end of the workbench and is fixedly connected to the rotating shaft.

[0013] Compared with the prior art, the external elevator working ladder provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting up a traction mechanism, the servo motor drives the rotating shaft to rotate, so that the winding roller can reel in and lift the traction rope, thereby transferring and replacing tools by lifting the tool box, avoiding the need to drop the lifting assembly as a whole when replacing tools, thereby improving work efficiency.

[0015] (2) A turntable is provided to drive the threaded rod to rotate, so that the threaded rod drives the fixed suction cup to descend and firmly position the device, thereby preventing the working ladder from shaking during the maintenance process, thereby enhancing the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model from a third viewing angle;

[0019] Figure 4 It is a structural schematic diagram of the traction mechanism of the utility model.

[0020] In the figure: 1. base plate; 2. pulley; 3. threaded rod; 4. turntable; 5. fixed suction cup; 6. L-shaped support plate; 7. escalator; 8. hand push rod; 9. lifting assembly; 10. workbench; 11. door panel; 12. traction mechanism; 1201. servo motor; 1202. rotating shaft; 1203. winding roller; 1204. traction rope; 1205. tool box. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4 The utility model provides an external elevator working ladder, including a base plate 1, a plurality of pulleys 2 are fixedly connected to the bottom of the base plate 1, threaded rods 3 are rotatably connected to the top of the base plate 1 near the corners, a plurality of the threaded rods 3 are fixedly connected to the tops of the turntables 4, a plurality of the threaded rods 3 are rotatably connected to the bottoms of the fixed suction cups 5, L-shaped support plates 6 are fixedly connected to the top of the base plate 1 near the two sides, an escalator 7 is fixedly connected to the outer side of one of the L-shaped support plates 6, and two hand push rods 8 are fixedly connected to the outer side of the other L-shaped support plate 6, a lifting component 9 is installed on the top of the base plate 1, a workbench 10 is installed on the top of the lifting component 9, a door panel 11 is installed on one side of the workbench 10, and a traction mechanism 12 is arranged at the front end of the workbench 10.

[0023] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a plurality of threaded holes corresponding to the threaded rods 3 are formed through the top of the base plate 1, and the threaded rods 3 cooperate with the threaded holes to ensure that the threaded rods 3 can be raised and lowered while rotating, thereby driving the fixed suction cup 5 to rise and fall.

[0024] Further as Figure 1 , Figure 2 and Figure 3As shown, it is worth explaining in detail that a plurality of the turntables 4 are fixedly connected to the top with a rocker, which makes it more convenient for the staff to rotate the turntable 4. The turntable 4 drives the threaded rod 3 to rotate, so that the threaded rod 3 drives the fixed suction cup 5 to descend and firmly position the device.

[0025] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the outer walls of the two hand push rods 8 are fixedly connected with anti-slip sleeves, which increase the friction between the outer walls of the hand push rods 8 and the palms, facilitate the staff to grasp, and further reduce the labor intensity of the staff.

[0026] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a hinge corresponding to the door panel 11 is installed on one side of the workbench 10, and the door panel 11 can be flexibly opened and closed under the action of the hinge, so that the staff can enter the workbench 10 easily.

[0027] According to the above working process, it can be known that by setting the turntable 4 to drive the threaded rod 3 to rotate, the threaded rod 3 drives the fixed suction cup 5 to descend and firmly position the device, so that the working ladder will not shake during the maintenance process, thereby enhancing the safety of the device.

[0028] Further as Figure 4 As shown, it is worth explaining in detail that the traction mechanism 12 includes a servo motor 1201 fixedly connected to the inside of the workbench 10, and the front end of the workbench 10 is rotatably connected to a rotating shaft 1202 corresponding to the servo motor 1201, and the front end of the rotating shaft 1202 is fixedly connected to a winding roller 1203, and the outer surface of the winding roller 1203 is fixedly connected to a traction rope 1204, and the end of the traction rope 1204 is fixedly connected to a tool box 1205. By setting the traction mechanism 12, the tool box 1205 is raised and lowered to transfer and replace tools, which avoids the need to drop the lifting assembly 9 as a whole when replacing tools, thereby improving work efficiency.

[0029] Further as Figure 4 As shown, it is worth explaining in detail that the output end of the servo motor 1201 passes through the front end of the workbench 10 and is fixedly connected to the rotating shaft 1202, ensuring that the servo motor 1201 can drive the rotating shaft 1202 to rotate smoothly, thereby providing driving force for the lifting and lowering of the traction rope 1204 and the tool box 1205.

[0030] This solution has the following working process: in actual use, the staff holds the hand push rod 8 to move the device to the bottom of the outer elevator of the aircraft, and then rotates the rocker to drive the turntable 4 to rotate, and the turntable 4 drives the threaded rod 3 to rotate, so that the threaded rod 3 drives the fixed suction cup 5 to descend and firmly position the device. When the device is positioned stably, the maintenance personnel climb onto the workbench 10 through the escalator 7, enter the workbench 10 and close the door panel 11, and then start the lifting assembly 9 to drive the workbench 10 and the maintenance personnel to rise until the maintenance personnel rise to the outer elevator and stop, and transfer the tool through the traction mechanism 12, turn on the servo motor 1201 to drive the rotating shaft 1202 to rotate, and the rotating shaft 1202 drives the winding roller 1203 to rotate, so that the winding roller 1203 reels and lifts the traction rope 1204, thereby transferring and replacing the tool by lifting the tool box 1205, avoiding the need to drop the lifting assembly 9 as a whole when replacing the tool.

[0031] In summary: by setting the turntable 4 to drive the threaded rod 3 to rotate, the threaded rod 3 drives the fixed suction cup 5 to descend and firmly position the device, so that the work ladder will not shake during the maintenance process, thereby enhancing the safety of the use of the device; by setting the traction mechanism 12, the tools are transferred and replaced by the lifting of the tool box 1205, avoiding the need to drop the lifting assembly 9 as a whole when replacing tools, thereby improving work efficiency.

Claims

1. An external elevator working ladder, comprising a bottom plate (1), characterized in that: The bottom of the base plate (1) is fixedly connected to a plurality of pulleys (2); the top of the base plate (1) is rotatably connected to threaded rods (3) near the corners; the tops of the plurality of threaded rods (3) are fixedly connected to turntables (4); the bottoms of the plurality of threaded rods (3) are rotatably connected to fixed suction cups (5); the top of the base plate (1) is fixedly connected to L-shaped support plates (6) near both sides; an escalator (7) is fixedly connected to the outside of one of the L-shaped support plates (6); two hand push rods (8) are fixedly connected to the outside of the other L-shaped support plate (6); a lifting assembly (9) is installed on the top of the base plate (1); a workbench (10) is installed on the top of the lifting assembly (9); a door panel (11) is installed on one side of the workbench (10); and a traction mechanism (12) is provided at the front end of the workbench (10).

2. The outer elevator working ladder according to claim 1, characterized in that: A plurality of threaded holes corresponding to the threaded rods (3) are formed through the top of the bottom plate (1).

3. The outer elevator working ladder according to claim 1, characterized in that: The tops of the plurality of rotating disks (4) are all fixedly connected with rocking arms.

4. The outer elevator working ladder according to claim 1, characterized in that: The outer walls of the two hand push rods (8) are both fixedly connected with anti-slip sleeves.

5. The outer elevator working ladder according to claim 1, characterized in that: A hinge corresponding to the door panel (11) is installed on one side of the workbench (10).

6. The outer elevator working ladder according to claim 1, characterized in that: The traction mechanism (12) comprises a servo motor (1201) fixedly connected to the inside of the workbench (10); the front end of the workbench (10) is rotatably connected to a rotating shaft (1202) corresponding to the servo motor (1201); the front end of the rotating shaft (1202) is fixedly connected to a winding roller (1203); the outer surface of the winding roller (1203) is fixedly connected to a traction rope (1204); and the end of the traction rope (1204) is fixedly connected to a tool box (1205).

7. The outer elevator working ladder according to claim 6, characterized in that: The output end of the servo motor (1201) passes through the front end of the workbench (10) and is fixedly connected to the rotating shaft (1202).

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