Buffer strut extending tool of undercarriage for aircraft

Abstract

The utility model relates to the technical field of detection tools, and discloses a buffer strut extension tool of an undercarriage for an aircraft, which comprises a bottom plate, two arc-shaped supporting plates are fixedly connected to the top of the bottom plate, the same circular ring is fixedly connected to the tops of the two arc-shaped supporting plates, and three rotating rods are rotatably connected to the circumference of the top of the circular ring at equal intervals. Clamping rods are fixedly connected to the other ends of the three rotating rods, L-shaped rods are fixedly connected to the middles of the tops of the three rotating rods, a rotating sleeve is rotationally connected to the top of the bottom plate, an inserting hole is formed in the middle of the top of the rotating sleeve, and the three clamping rods are located on the inner sides of the clamping rods. According to the utility model, the technical effects of convenient and rapid fixation of the buffer support column during detection of the buffer support column and improvement of the detection efficiency of the buffer support column are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of detection tooling, in particular to a buffer strut extension tooling for an aircraft landing gear. Background Technique

[0002] The buffer strut of the landing gear is a key component in the aircraft landing gear system, mainly responsible for absorbing the impact energy generated when the aircraft lands, and ensuring the stability and safety of the aircraft during ground operation. According to different designs and applications, in order to improve the buffering performance, the buffer struts of modern aircraft landing gears usually adopt advanced materials and processes, and are subject to strict design and testing to ensure that they can withstand repeated loads and impacts for a long time.

[0003] During the production process of the buffer strut, it is necessary to conduct strict inspections on it to ensure the performance of the buffer strut. When inspecting the buffer strut, it is generally necessary to first fix the bottom of the buffer strut before squeezing the buffer strut to detect its stress condition. When the existing equipment fixes the bottom of the buffer strut, it is relatively cumbersome, and unlocking is also troublesome, reducing the inspection efficiency. Therefore, a buffer strut extension tooling for an aircraft landing gear is designed. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and a buffer strut extension tooling for an aircraft landing gear is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A buffer strut extension tooling for an aircraft landing gear, including a bottom plate, two arc-shaped support plates are fixedly connected to the top of the bottom plate, the same circular ring is fixedly connected to the top of the two arc-shaped support plates, three rotating rods are rotatably connected to the top of the circular ring at equal intervals in the circumferential direction, the other ends of the three rotating rods are fixedly connected with clamping rods, L-shaped rods are fixedly connected to the middle positions of the tops of the three rotating rods, a rotating sleeve is rotatably connected to the top of the bottom plate, a jack is opened at the middle position of the top of the rotating sleeve, the three clamping rods are all located inside the clamping rod, inclined holes are opened at equal intervals in the circumferential direction at the edge of the top of the rotating sleeve, and the top ends of the three L-shaped rods are respectively slidably connected in the adjacent inclined holes. When the rotating sleeve rotates, through the three inclined holes, the three clamping rods can be made to approach each other.

[0007] As a further scheme of the utility model, both of the two special-shaped grooves include a vertical groove and a spiral inclined groove, and the bottom of the vertical groove is communicated with the spiral inclined groove.

[0008] As a further solution of the present utility model, a hydraulic cylinder is fixedly connected to the top of the bottom plate at the middle position between the two arc-shaped support plates. The top of the hydraulic cylinder is fixedly connected with a square block, and the top of the square block is fixedly connected with a placement table.

[0009] As a further solution of the present utility model, round rods are fixedly connected to both ends of the square block. Each round rod is slidably connected in the adjacent special-shaped groove. The cooperation of the round rod and the special-shaped groove enables the hydraulic cylinder to drive the buffer pillar to descend to a certain position, and then drive the rotating sleeve to rotate, so that the three clamping rods fix the buffer pillar.

[0010] As a further solution of the present utility model, a support frame is fixedly connected to the rear end of the top of the bottom plate. Two reinforcing ribs are arranged at the bent part of the top of the support frame, and the front end of the top of the reinforcing rib is fixedly connected with a hydraulic rod.

[0011] As a further solution of the present utility model, the output end of the bottom of the hydraulic rod penetrates through the support frame and is fixedly connected with a pressing plate. A pressure sensor is fixedly connected to the bottom of the pressing plate. The setting of the pressure sensor enables the pressure received by the buffer pillar to be recorded, which is convenient for the user to view.

[0012] The beneficial effects of the present utility model are as follows:

[0013] For the present utility model: Due to the adoption of technical means such as a rotating sleeve, an inclined hole, a special-shaped groove, an arc-shaped support plate, a circular ring, a rotating rod, a clamping rod, an L-shaped rod, a hydraulic cylinder, a square block, a placement table and a round rod, when the buffer pillar is placed on the placement table, starting the contraction of the hydraulic cylinder can make the buffer pillar descend and be fixed, and when the hydraulic cylinder extends, the buffer pillar can be loosened. This conveniently, quickly and effectively solves the problems raised in the background technology, and further realizes the technical effect that when detecting the buffer pillar, it is convenient, fast and efficient to fix it, and improves the detection efficiency of the buffer pillar.

[0014] For the present utility model: Through the setting of the hydraulic rod, the pressing plate and the pressure sensor, when the pressing plate and the pressure sensor squeeze the buffer pillar, it is convenient to record the pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the overall buffer pillar extension tooling for a machine landing gear proposed by the present utility model;

[0016] Figure 2 It is a schematic cross-sectional structure diagram of the rotating sleeve of the buffer pillar extension tooling for a machine landing gear proposed by the present utility model;

[0017] Figure 3 It is a schematic internal structure diagram of the rotating sleeve of the buffer pillar extension tooling for a machine landing gear proposed by the present utility model;

[0018] Figure 4 Schematic diagram of the inner wall of the rotating sleeve of a buffer strut extension tool for an aircraft landing gear proposed by the present utility model.

[0019] In the figure: 1, bottom plate; 2, support frame; 3, reinforcing rib; 4, hydraulic rod; 5, pressing plate; 6, pressure sensor; 7, rotating sleeve; 701, inclined hole; 702, jack; 703, special-shaped groove; 8, arc-shaped support plate; 801, circular ring; 9, rotating rod; 10, clamping rod; 11, L-shaped rod; 12, hydraulic cylinder; 13, square block; 14, placement table; 15, round rod. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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.

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Next, the present utility model will be described in detail with reference to the drawings and in conjunction with the embodiments.

[0022] Referring to Figures 1-4 , a buffer strut extension tool for an aircraft landing gear includes a bottom plate 1. Two arc-shaped support plates 8 are fixedly connected to the top of the bottom plate 1. The same circular ring 801 is fixedly connected to the tops of the two arc-shaped support plates 8. Three rotating rods 9 are rotatably connected to the circumference of the top of the circular ring 801 at equal distances. The other ends of the three rotating rods 9 are fixedly connected with clamping rods 10. L-shaped rods 11 are fixedly connected to the middle of the tops of the three rotating rods 9. A rotating sleeve 7 is rotatably connected to the top of the bottom plate 1. A jack 702 is opened at the middle position of the top of the rotating sleeve 7. The three clamping rods 10 are all located inside the clamping rods 10. Inclined holes 701 are opened at equal distances on the circumference of the top edge of the rotating sleeve 7. The tops of the three L-shaped rods 11 are respectively slidably connected in the adjacent inclined holes 701. Two special-shaped grooves 703 are symmetrically opened on the inner circumference of the rotating sleeve 7. When the rotating sleeve 7 rotates, the three clamping rods 10 can be made to approach each other through the inclined holes 701.

[0023] In this embodiment, both of the two special-shaped grooves 703 include a vertical groove and a spiral inclined groove, and the bottom of the vertical groove is communicated with the spiral inclined groove.

[0024] In this embodiment, a hydraulic cylinder 12 is fixedly connected to the top of the bottom plate 1 at the middle position between the two arc-shaped support plates 8. A square block 13 is fixedly connected to the top of the hydraulic cylinder 12. A placement table 14 is fixedly connected to the top of the square block 13.

[0025] In this embodiment, round rods 15 are fixedly connected to both ends of the square block 13. Each round rod 15 is slidably connected in the adjacent special-shaped groove 703. The setting of the special-shaped groove 703 enables the rotating sleeve 7 to rotate when the hydraulic cylinder 12 contracts, thereby driving the three clamping rods 10 to approach each other.

[0026] In this embodiment, a support frame 2 is fixedly connected to the rear end of the top of the bottom plate 1. Two reinforcing ribs 3 are provided at the bent part of the top of the support frame 2. The front end of the top of the reinforcing rib 3 is fixedly connected to a hydraulic rod 4. The setting of the reinforcing rib 3 improves the stability of the support frame 2.

[0027] In this embodiment, the output end of the bottom of the hydraulic rod 4 penetrates through the support frame 2 and is fixedly connected to a pressing plate 5. A pressure sensor 6 is fixedly connected to the bottom of the pressing plate 5. The pressure sensor 6 can detect the force condition of the buffer strut.

[0028] Working principle: When using the buffer strut extension tooling for the aircraft landing gear, place the buffer strut of the aircraft landing gear on the placement table 14. Start the hydraulic cylinder 12 to contract, causing the placement table 14 and the buffer strut to descend. During this process, the round rod 15 slides along the vertical groove of the special-shaped groove 703. When the buffer strut descends to a certain position, the buffer strut passes through the jack 702, and the round rod 15 slides into the spiral inclined groove of the special-shaped groove 703. At this time, the rotating sleeve 7 will rotate. Through the setting of the inclined hole 701, the L-shaped rod 11 drives the rotating rod 9 to rotate, causing the three clamping rods 10 to firmly fix the buffer strut. Then start the hydraulic rod 4 to make the pressing plate 5 drive the pressure sensor 6 to descend, so as to squeeze the buffer strut, causing the buffer strut to contract. Record the detection data of the pressure sensor 6 in real time to detect whether the buffer strut is qualified. After completion, start the hydraulic cylinder 12 to extend, causing the buffer strut to rise, and at the same time the clamping rod 10 releases the buffer strut, facilitating the user to take and replace it.

[0029] For the sake of convenience in description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A buffer strut extension tooling for aircraft landing gear, comprising a bottom plate (1), characterized in that, At the top of the bottom plate (1), two arc-shaped support plates (8) are fixedly connected. At the top of the two arc-shaped support plates (8), the same ring (801) is fixedly connected. At the top of the ring (801), three rotating rods (9) are rotatably connected at equal intervals along the circumference. At the other ends of the three rotating rods (9), clamping rods (10) are fixedly connected. At the middle positions of the tops of the three rotating rods (9), L-shaped rods (11) are fixedly connected. At the top of the bottom plate (1), a rotating sleeve (7) is rotatably connected. At the middle position of the top of the rotating sleeve (7), a jack (702) is provided. The three clamping rods (10) are all located inside the clamping rod (10). At the edge of the top of the rotating sleeve (7), inclined holes (701) are provided at equal intervals along the circumference. The tops of the three L-shaped rods (11) are respectively slidably connected in the adjacent inclined holes (701). On the inner circumference of the rotating sleeve (7), two special-shaped grooves (703) are symmetrically provided.

2. The buffer strut extension tooling for the landing gear of a machine tool according to claim 1, characterized in that, Each of the two special-shaped grooves (703) includes a vertical groove and a spiral inclined groove, and the bottom of the vertical groove is communicated with the spiral inclined groove.

3. The buffer strut extension tooling for the landing gear of a machine according to claim 1, characterized in that, At the top of the bottom plate (1) and in the middle of the two arc-shaped support plates (8), a hydraulic cylinder (12) is fixedly connected. At the top of the hydraulic cylinder (12), a square block (13) is fixedly connected. At the top of the square block (13), a placement table (14) is fixedly connected.

4. The buffer strut extension tooling for the landing gear of a machine according to claim 3, characterized in that, At both ends of the square block (13), round rods (15) are fixedly connected. Each round rod (15) is slidably connected in the adjacent special-shaped groove (703).

5. The buffer strut extension tooling for aircraft landing gear according to claim 1, characterized in that, At the rear end of the top of the bottom plate (1), a support frame (2) is fixedly connected. At the bent part of the top of the support frame (2), two reinforcing ribs (3) are provided. At the front end of the top of the reinforcing rib (3), a hydraulic rod (4) is fixedly connected.

6. The buffer strut extension tooling for the landing gear of a machine tool according to claim 5, characterized in that The output end of the bottom of the hydraulic rod (4) penetrates through the support frame (2) and is fixedly connected with a pressing plate (5). At the bottom of the pressing plate (5), a pressure sensor (6) is fixedly connected.

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