Airplane ground moving device with buffering function
By designing the ground mobile device of the aircraft with buffer function, the hydraulic and gas compression conversion of the inner cylinder of the buffer pillar is solved, and the mobile device lacks buffer function during the aircraft maintenance process is achieved, and the safe movement and protection of the aircraft are achieved.
Patent Information
- Application Number
- CN202421418850.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-20
AI Technical Summary
During the aircraft maintenance process, it is necessary to replace the mobile device of the front landing gear of the aircraft, and the buffering function must be provided to protect the aircraft.
A ground moving device on the aircraft with buffering function is designed, including buffering pillars, universal joints, T-type connecting arms, U-shaped seats and fuselage connecting structures. The inner cylinder of the buffer pillar achieves the buffering effect through hydraulic and gas compression conversion.
This device can effectively replace the aircraft's front landing gear, realize short-distance movement and transition of the aircraft, and provide good buffering effect through the hydraulic and gas compression conversion of the buffer pillars, protecting the aircraft from damage.
Smart Images
Figure CN222611369U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of aircraft maintenance and assembly, and in particular relates to an aircraft ground moving device with a buffer function. Background Art
[0002] During the inspection and maintenance of the aircraft's front landing gear, the original landing gear of the aircraft needs to be removed from the fuselage, and then the aircraft needs to be transferred and placed. At this time, a moving device to replace the aircraft landing gear needs to be installed at the position of the aircraft's front landing gear to ensure the normal transfer of the aircraft; and during the movement, it is also necessary to ensure that it has a certain buffer function to prevent damage to the aircraft body during the transportation process. Utility Model Content
[0003] The utility model aims to provide an aircraft ground moving device with a buffering function, which can be used to replace the front landing gear of the aircraft, ensure the aircraft can be transferred during the maintenance process, and is used to support the aircraft and realize the short-distance movement of the aircraft.
[0004] In order to realize the above-mentioned technical features, the purpose of the utility model is realized as follows: a ground mobile device for an aircraft with a buffering function, comprising a buffering pillar, a buffering pillar inner tube is arranged inside the buffering pillar, the end of the buffering pillar inner tube is hinged to the outer wall of a T-shaped connecting arm through a universal joint, the bottom end of the T-shaped connecting arm is connected to the axle, wheels are installed at both ends of the axle, a U-shaped seat is arranged at the top of the T-shaped connecting arm, the U-shaped seat is hingedly connected to the diagonal support column on the outer wall of the buffering pillar, and a body connecting structure for connecting to an aircraft is installed on the top of the buffering pillar.
[0005] The machine body connection structure comprises a triangular arm hinged on the top of the buffer pillar, and two top corners of the triangular arm are hingedly connected to the outer wall of the buffer pillar through support rods.
[0006] The buffer support comprises an outer cylinder, the top end of which is sealed by a top cover, an inner cylinder of the buffer support is slidably arranged inside the outer cylinder and forms a piston structure, an inner end cover is fixed to the inner end of the inner cylinder of the buffer support, a first one-way valve and a second one-way valve are installed on the inner end cover, and a floating piston is arranged inside the inner cylinder of the buffer support.
[0007] The first one-way valve and the second one-way valve are arranged in opposite directions. The second one-way valve allows the oil inside the outer cylinder to enter the inner cylinder of the buffer strut under high pressure, and the first one-way valve allows the oil inside the inner cylinder of the buffer strut to enter the inner cylinder of the outer cylinder under high pressure.
[0008] The floating piston divides the inner cylinder of the buffer support into a hydraulic chamber and an air chamber.
[0009] The outer wall of the buffer support column is provided with symmetrically arranged first connecting ears, and the first connecting ears are hingedly connected to the support rod.
[0010] A second connecting ear is arranged on the outer wall of the buffer support column, and a hook ring is hinged on the second connecting ear.
[0011] The utility model has the following beneficial effects:
[0012] 1. The mobile device of the utility model can be used to replace the front landing gear of the aircraft, ensure the aircraft to be transferred during the maintenance process, and be used to support the aircraft and realize the short-distance movement of the aircraft.
[0013] 2. The utility model facilitates the subsequent matching of the entire mobile device with the aircraft landing gear position through the above-mentioned body connection structure, thereby realizing the installation of the entire mobile device.
[0014] 3. Through the above-mentioned buffer pillar, the inner cylinder of the buffer pillar inside it can be contracted, and then the buffering purpose is achieved through the movement of the inner cylinder of the buffer pillar.
[0015] 4. During the specific working process, the compression conversion between high-pressure hydraulic oil and high-pressure gas can be achieved through the first one-way valve and the second one-way valve, thereby achieving a good buffering effect.
[0016] 5. The above-mentioned floating piston can achieve a good buffering effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 This is a three-dimensional diagram of the utility model from the first perspective.
[0019] Figure 2 This is a three-dimensional diagram from the second viewing angle of the present invention.
[0020] Figure 3 This is a three-dimensional diagram of the utility model from the third viewing angle.
[0021] Figure 4 It is the front view of the utility model.
[0022] Figure 5 For this utility model Figure 4 Medium AA view.
[0023] Figure 6 For this utility model Figure 5 Partial view of middle B.
[0024] Figure 7 This is a three-dimensional diagram of the buffer pillar of the utility model.
[0025] Figure 8 This is the front view of the buffer pillar of the utility model.
[0026] Fig. 9 For this utility model Figure 8 Middle buffer pillar CC view.
[0027] In the figure: wheel 1, axle 2, U-shaped seat 3, diagonal support column 4, buffer support column 5, support rod 6, triangular arm 7, hook ring 8, buffer support column inner cylinder 9, universal joint 10, T-shaped connecting arm 11, top cover 12, first check valve 13, inner end cover 14, second check valve 15, hydraulic cavity 16, floating piston 17, air cavity 19, outer cylinder 20;
[0028] A first connecting ear 501 and a second connecting ear 502 . DETAILED DESCRIPTION
[0029] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.
[0030] See also Figure 1-9 A ground mobile device for an aircraft with a buffering function comprises a buffering pillar 5, a buffering pillar inner tube 9 is arranged inside the buffering pillar 5, the end of the buffering pillar inner tube 9 is hinged to the outer wall of a T-shaped connecting arm 11 through a universal joint 10, the bottom end of the T-shaped connecting arm 11 is connected to the wheel axle 2, and the two ends of the wheel axle 2 are equipped with wheels 1, the top of the T-shaped connecting arm 11 is provided with a U-shaped seat 3, the U-shaped seat 3 is hingedly connected to the diagonal support column 4 on the outer wall of the buffering pillar 5, and the top of the buffering pillar 5 is equipped with a body connection structure for connecting with the aircraft. The mobile device can be used to replace the front landing gear of the aircraft, ensure that the aircraft can be transferred during the maintenance process, and is used to support the aircraft and realize the short-distance movement of the aircraft. In the specific use process, the body connection structure is connected to the aircraft landing gear connection interface, and then the replaced aircraft landing gear is replaced to realize the normal transfer movement of the aircraft. Through the hydraulic buffering of the buffering pillar inner tube 9 inside the buffering pillar 5, a good buffering effect is achieved to prevent damage to the aircraft during the movement.
[0031] Furthermore, the body connection structure includes a triangular arm 7 hinged on the top of the buffer pillar 5, and two top corners of the triangular arm 7 are respectively hingedly connected to the outer wall of the buffer pillar 5 through the support rod 6. The above-mentioned body connection structure facilitates the subsequent matching of the entire mobile device with the landing gear position of the aircraft, thereby realizing the installation of the entire mobile device.
[0032] Furthermore, the buffer support 5 comprises an outer cylinder 20, the top end of which is sealed by a top cover 12, the buffer support inner cylinder 9 is slidably arranged inside the outer cylinder 20 and forms a piston structure, the inner end of the buffer support inner cylinder 9 is fixed with an inner end cover 14, the first one-way valve 13 and the second one-way valve 15 are installed on the inner end cover 14, and a floating piston 17 is arranged inside the buffer support inner cylinder 9. Through the above-mentioned buffer support 5, the buffer support inner cylinder 9 inside it can be contracted, and then the buffering purpose is achieved through the movement of the buffer support inner cylinder 9.
[0033] Furthermore, the first one-way valve 13 and the second one-way valve 15 are arranged in opposite directions, and the second one-way valve 15 allows the oil inside the outer cylinder 20 to enter the interior of the buffer support inner cylinder 9 under high pressure, and the first one-way valve 13 allows the oil inside the buffer support inner cylinder 9 to enter the interior of the outer cylinder 20 under high pressure. Through the above-mentioned first one-way valve 13 and second one-way valve 15 in the specific working process, the compression conversion between high-pressure hydraulic oil and high-pressure gas can be achieved, thereby achieving a good buffering effect.
[0034] Furthermore, the floating piston 17 divides the buffer support inner tube 9 into a hydraulic cavity 16 and an air cavity 19. The floating piston 17 can achieve a good buffering effect.
[0035] Furthermore, the outer wall of the buffer support column 5 is provided with symmetrically arranged first connecting ears 501, and the first connecting ears 501 are hingedly connected to the support rod 6. The connection of the support rod 6 can be achieved through the first connecting ears 501.
[0036] Furthermore, a second connecting ear 502 is provided on the outer wall of the buffer pillar 5, and a hook ring 8 is hinged on the second connecting ear 502. The hook ring 8 is convenient for connecting with a trailer, thereby realizing the towing movement of the aircraft.
[0037] The specific working process and principle of this utility model:
[0038] When the buffer strut 5 replaces the landing gear and is installed at the bottom of the aircraft, under a load of 45t, the buffer strut inner tube 9 of the buffer strut 5 will be compressed. At this time, the hydraulic oil in the oil chamber of the outer cylinder 20 flows from the second one-way valve 15 into the buffer strut inner tube 9, pushing the floating piston 17 to move rightward, compressing the air chamber 19 gas, so that the pressure of the air chamber 19 increases. When it reaches 9.17MPa, the buffer strut inner tube 9 stops moving and is in a balanced position.
[0039] When the aircraft experiences downward turbulence, the buffer strut 5 is further compressed, causing the hydraulic fluid in the oil chamber to flow into the buffer strut inner tube 9 through the second one-way valve 15, and the pressure in the oil chamber and the air chamber gradually increases. The force generated in this process gradually does work, absorbing the energy of the aircraft's downward turbulence, so that the aircraft stops the downward turbulence smoothly.
[0040] When the aircraft stops shaking downward, the pressure in the air cavity 19 is higher than the pressure at the equilibrium position, and the buffer strut 5 will gradually extend. At this time, the hydraulic oil in the buffer strut inner tube 9 flows into the oil cavity of the outer tube 20 through the first one-way valve 13, and slowly extends to the length of the equilibrium position under the throttling action of the first one-way valve 13.
Claims
1. An aircraft ground moving device with a buffer function, characterized in that: The invention comprises a buffer pillar (5), wherein a buffer pillar inner tube (9) is arranged inside the buffer pillar (5), the end of the buffer pillar inner tube (9) is hingedly connected to the outer wall of a T-shaped connecting arm (11) through a universal joint (10), the bottom end of the T-shaped connecting arm (11) is connected to a wheel axle (2), and wheels (1) are installed at both ends of the wheel axle (2), a U-shaped seat (3) is arranged at the top end of the T-shaped connecting arm (11), the U-shaped seat (3) is hingedly connected to a diagonal support column (4) on the outer wall of the buffer pillar (5), and a fuselage connection structure for connecting to an aircraft is installed on the top of the buffer pillar (5).
2. The aircraft ground moving device with a buffering function according to claim 1, characterized in that: The machine body connection structure comprises a triangular arm (7) hinged on the top of the buffer pillar (5), and two top corners of the triangular arm (7) are hingedly connected to the outer wall of the buffer pillar (5) via support rods (6).
3. The aircraft ground moving device with a buffering function according to claim 1, characterized in that: The buffer support (5) comprises an outer cylinder (20), the top end of the outer cylinder (20) is sealed by a top cover (12), the buffer support inner cylinder (9) is slidably arranged inside the outer cylinder (20) and forms a piston structure, the inner end of the buffer support inner cylinder (9) is fixed with an inner end cover (14), the inner end cover (14) is mounted with a first one-way valve (13) and a second one-way valve (15), and a floating piston (17) is arranged inside the buffer support inner cylinder (9).
4. The aircraft ground moving device with a buffering function according to claim 3, characterized in that: The first one-way valve (13) and the second one-way valve (15) are arranged in opposite directions. The second one-way valve (15) allows the oil inside the outer cylinder (20) to enter the interior of the buffer support inner cylinder (9) under high pressure. The first one-way valve (13) allows the oil inside the buffer support inner cylinder (9) to enter the interior of the outer cylinder (20) under high pressure.
5. The aircraft ground moving device with buffering function according to claim 3, characterized in that: The floating piston (17) divides the buffer support inner cylinder (9) into a hydraulic cavity (16) and an air cavity (19).
6. The aircraft ground moving device with a buffering function according to claim 2, characterized in that: The outer wall of the buffer support column (5) is provided with symmetrically arranged first connecting ears (501), and the first connecting ears (501) are hingedly connected to the support rod (6).
7. The aircraft ground moving device with a buffering function according to claim 2, characterized in that: A second connecting ear (502) is provided on the outer wall of the buffer support column (5), and a hook ring (8) is hingedly connected to the second connecting ear (502).