Airplane jack retracting structure

Abstract

The utility model discloses an aircraft jack retracting structure which comprises a main supporting rod and an upper support, the upper support is hinged to the upper end of the main supporting rod, the upper end and the lower end of the side wall, close to one side of the upper support, of the main supporting rod are provided with a retracting hinge hole and a working hinge hole respectively, a lower support is arranged below the upper support, and the lower support is hinged to the working hinge hole. A connecting rod is rotationally connected to the side wall of the lower support, the movable end of the connecting rod can be rotationally connected with the retracting hinge hole and the working hinge hole through fixing bolts, a threaded cylinder is fixed to the end, away from the upper support, of the main supporting rod, a threaded rod is in threaded connection with the interior of the threaded cylinder, and a handle is arranged at the upper end of the threaded rod; and the handle penetrates through the upper end of the threaded cylinder, and a foot margin disc is fixed to the bottom of the threaded rod. The utility model belongs to the technical field of mechanical engineering, and particularly relates to an aircraft jack retracting structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical engineering, and specifically refers to a retractable structure of an aircraft jack. Background Technique

[0002] The scientific name of the aircraft jack is a three-legged jack, which usually has three support legs with a projection angle of 120° to each other, and has high stability and centering. Most of the existing aircraft jacks have a fixed structure, and the whole cannot be folded and stored, resulting in a large space occupancy rate and being inconvenient for transportation and storage. Therefore, we propose a retractable structure of an aircraft jack to solve the above problems. Content of the Utility Model

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a retractable structure of an aircraft jack, which effectively solves the problems of the fixed structure, large volume and inconvenient storage of the existing aircraft jacks.

[0004] The technical solution adopted by the utility model is as follows: A retractable structure of an aircraft jack proposed by the utility model includes a main support rod and an upper support. The upper support is hinged to the upper end of the main support rod. At the upper and lower ends of the side wall of the main support rod close to the upper support, a retractable hinge hole and a working hinge hole are respectively provided. A lower support is provided below the upper support. A connecting rod is rotatably connected to the side wall of the lower support. One movable end of the connecting rod can be rotatably connected to the retractable hinge hole and the working hinge hole respectively through a fixing bolt.

[0005] As an improvement of this solution, a threaded cylinder is fixed to one end of the main support rod away from the upper support. A screw rod is threadedly connected to the threaded cylinder. A handle is provided at the upper end of the screw rod, and the handle penetrates through the upper end of the threaded cylinder. A floor anchor is fixed to the bottom of the screw rod.

[0006] As an improvement of this solution, universal wheels are provided at the lower end of the main support rod. A rectangular through hole is provided on the connecting rod, which can reduce the mass while ensuring the connection strength.

[0007] As an improvement of this solution, the main support rod is provided in a cylindrical shape, and the upper support and the lower support are coaxially arranged.

[0008] The beneficial effects obtained by the utility model by adopting the above structure are as follows:

[0009] Adopting a foldable and retractable structure design, the retractable hinge hole and the working hinge hole provided on the main support rod can realize the folding and retraction of the whole jack by changing the connection position of the connecting rod, while ensuring the overall stability, reducing the space occupancy rate and transportation volume of the aircraft jack. Description of the Drawings

[0010] Figure 1Schematic diagram of the overall structure of an aircraft jack retracting and folding structure proposed by the present utility model;

[0011] Figure 2 Schematic diagram of the working state of an aircraft jack retracting and folding structure proposed by the present utility model;

[0012] Figure 3 Schematic diagram of the retracting and folding state of an aircraft jack retracting and folding structure proposed by the present utility model.

[0013] Among them, 1. Main support rod; 2. Upper support; 3. Retracting hinge hole; 4. Working hinge hole; 5. Link; 6. Lower support; 7. Fixed bolt; 8. Threaded cylinder; 9. Screw; 10. Handle; 11. Floor plate; 12. Universal wheel.

[0014] The attached drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model, and do not constitute a limitation to the present utility model. Specific embodiments

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0016] As Figure 1 shown, an aircraft jack retracting and folding structure proposed by the present utility model includes a main support rod 1 and an upper support 2. The upper support 2 is hinged to the upper end of the main support rod 1. At the upper and lower ends of the side wall of the main support rod 1 close to the upper support 2, a retracting hinge hole 3 and a working hinge hole 4 are respectively provided. A lower support 6 is provided below the upper support 2. A link 5 is rotatably connected to the side wall of the lower support 6. One movable end of the link 5 can be rotatably connected to the retracting hinge hole 3 and the working hinge hole 4 respectively through a fixed bolt 7.

[0017] In order to achieve support and fixation during use, a threaded cylinder 8 is fixed to one end of the main support rod 1 away from the upper support 2. A screw 9 is threadedly connected inside the threaded cylinder 8. A handle 10 is provided at the upper end of the screw 9, and the handle 10 penetrates through the upper end of the threaded cylinder 8. A floor plate 11 is fixed to the bottom of the screw 9.

[0018] Universal wheels 12 are provided at the lower end of the main support rod 1. A rectangular through hole is provided on the link 5, which can reduce the mass while ensuring the connection strength; the main support rod 1 is provided in a cylindrical shape, and the upper support 2 and the lower support 6 are coaxially arranged.

[0019] During actual use, when the aircraft jack is in the working state, one end of the connecting rod 5 is connected to the lower support 6, and the other end is connected to the working hinge hole 4 on the main support rod 1, so that the aircraft jack forms a stable tripod structure. Then rotate the handle 10 to make the screw rod 9 extend downward out of the threaded cylinder 8, and use the anchor plate 11 for support and fixation. When the aircraft jack needs to be retracted and folded, use a crane to lift the aircraft jack, and connect the connecting rod 5 to the retraction and folding hinge hole 3 on the main support rod 1 with the fixing bolt 7 to retract and fold the aircraft jack, thereby reducing the space occupancy rate and transportation volume of the aircraft jack. The above is the usage process of the entire retraction and folding structure of the aircraft jack.

[0020] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the spirit of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An aircraft jack retracting and folding structure, comprising a main support rod (1) and an upper support (2), wherein the upper support (2) is hinged to the upper end of the main support rod (1), and is characterized in that: On the upper and lower ends of the side wall of the main support rod (1) close to the upper support (2), a folding and hinged hole (3) and a working hinged hole (4) are respectively provided. A lower support (6) is provided below the upper support (2). One end of the connecting rod (5) rotatably connected to the side wall of the lower support (6) can be rotatably connected to the folding and hinged hole (3) and the working hinged hole (4) respectively through a fixing bolt (7).

2. The aircraft jack retracting and folding structure according to claim 1, characterized in that: One end of the main support rod (1) away from the upper support (2) is fixed with a threaded cylinder (8). A screw rod (9) is threadedly connected in the threaded cylinder (8). A handle (10) is provided at the upper end of the screw rod (9), and the handle (10) penetrates through the upper end of the threaded cylinder (8). A floor anchor plate (11) is fixed at the bottom of the screw rod (9).

3. The aircraft jack retracting and folding structure according to claim 2, characterized in that: A universal wheel (12) is provided at the lower end of the main support rod (1). A rectangular through hole is provided on the connecting rod (5), which can reduce the mass while ensuring the connection strength.

4. The aircraft jack retracting and folding structure according to claim 3, characterized in that: The main support rod (1) is arranged in a cylindrical shape, and the upper support (2) and the lower support (6) are coaxially arranged.

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