A shock absorbing structure for a landing gear of an amphibious aircraft

Abstract

The utility model discloses amphibious aircraft landing gear's damping structure, including landing gear, the top connection of landing gear retraction motor, the bottom is connected through the wheel fork machine wheel, is provided with damping assembly in landing gear, and damping assembly includes rubber sponge body, and the whole simple structure is simple, need not complicated sealing structure and gas or liquid filling system, utilize the characteristic of rubber sponge simultaneously, can be applicable to aquatic work environment, and the corrosion resistance is strong.

Description

Technical Field

[0001] This utility model relates to the field of landing gear structures for amphibious aircraft, and more particularly to a shock-absorbing structure for the landing gear of an amphibious aircraft. Background Technology

[0002] Amphibious aircraft need to adapt to both aquatic and terrestrial environments, thus placing high demands on airframe corrosion resistance, lightweight design, and landing gear reliability. Traditional landing gear shock absorbers mostly use pneumatic / hydraulic or spring damping principles. While these landing gears can meet the damping requirements, they still have the following problems:

[0003] 1. Complex structure: Gas compression shock absorption systems or hydraulic shock absorption systems require matching sealing devices and adjustment mechanisms, increasing design and maintenance costs;

[0004] 2. Poor corrosion resistance: Metal springs are easily corroded by salt spray and microorganisms in water, which leads to a shortened lifespan;

[0005] 3. High dependence on environmental requirements: In water-based working environments, air pressure or hydraulic shock-absorbing seals are prone to aging and failure, reducing the shock absorption effect.

[0006] For example, in the prior art, patent number: CN108557060, patent name: a shock-absorbing aircraft landing gear, relies on a traditional metal spring structure, but cannot meet the special needs of amphibious aircraft.

[0007] To address these issues, this application proposes a solution. Summary of the Invention

[0008] Purpose of the utility model: The purpose of this utility model is to provide a shock-absorbing structure for the landing gear of amphibious aircraft that is suitable for working environments in water, and to solve the problems of traditional shock absorbers being prone to corrosion, heavy, and complex in structure.

[0009] Technical solution: The present invention discloses a shock-absorbing structure for the landing gear of an amphibious aircraft, comprising a landing gear, wherein a receiver motor is connected to the top of the landing gear and a wheel is connected to the bottom of the landing gear via a wheel fork, and a shock-absorbing component is provided inside the landing gear, the shock-absorbing component comprising a rubber sponge body.

[0010] This application achieves shock absorption of the landing gear by setting rubber sponge in the landing gear. The overall structure is simple and does not require a complicated sealing structure or gas or liquid filling system. At the same time, it utilizes the properties of rubber sponge, which makes it suitable for working environments in water and has strong corrosion resistance.

[0011] Preferably, the landing gear further includes an outer cylinder and a guide rod assembly. The guide rod assembly and the shock absorption assembly are sequentially connected and disposed inside the outer cylinder from top to bottom. One end of the guide rod in the guide rod assembly is connected to the output end of the receiver / discharge motor, and the other end is connected to the shock absorption assembly. The bottom of the shock absorption assembly is connected to the wheel fork.

[0012] The outer tube, guide rod assembly, and shock absorption assembly are combined to form a complete landing gear structure, with the shock absorption assembly achieving a shock absorption effect on the overall landing gear structure.

[0013] Preferably, the shock absorption assembly further includes a connector and an annular component. One end of the connector is connected to a guide rod, and the other end is connected to a rubber sponge. The bottom of the rubber sponge is provided with an annular component, which is fixedly connected to the wheel fork.

[0014] Preferably, the connector is bonded to the guide rod, and the rubber sponge is filled between the connector and the annular part.

[0015] Preferably, the annular component is connected to the wheel fork by a number of pins.

[0016] The pin is designed to fix the ring-shaped part to the wheel fork, and it can also transmit some of the vibration force from the wheel fork to the rubber sponge through the pin.

[0017] Preferably, the connection between the wheel fork and the ring component is a circular ring structure component. The circular ring component and the ring component are placed concentrically. Several pins pass through the circular ring component and then through the ring component again and are fixedly connected. The through holes of the several pins are evenly distributed in the circumference of the circular ring component and the ring component.

[0018] The specific connection structure between the wheel fork and the ring component is further disclosed. By setting multiple evenly distributed pins, the force of vibration is transmitted more evenly.

[0019] Preferably, the shock-absorbing component includes at least two sections of rubber sponge, which are separated by a metal plate.

[0020] The multi-segment rubber sponge design can absorb more vibration force compared to a single-segment rubber sponge, thus improving the shock absorption effect. The metal plate not only separates the rubber sponge but also absorbs some vibration force.

[0021] Beneficial effects: Compared with the prior art, this utility model has the following advantages:

[0022] (1) The rubber sponge does not require a complex sealing structure and a gas or liquid filling system. It has a simple structure, is easy to manufacture and maintain, and greatly reduces costs.

[0023] (2) It avoids problems such as leakage that may occur in water with traditional shock absorbers, making it more environmentally friendly and suitable for the use of amphibious aircraft.

[0024] (3) Avoiding the use of traditional shock absorption structures can reduce the overall weight of the aircraft and is more suitable for small aircraft under 650KG. Attached Figure Description

[0025] Figure 1 This is a front view of the present invention.

[0026] Figure 2 This is a cross-sectional view of the landing gear in this utility model.

[0027] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the landing gear in this utility model. Detailed Implementation

[0028] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0029] See appendix Figures 1-3 The figure shows a shock-absorbing structure for the landing gear of an amphibious aircraft, comprising a landing gear 1, a receiver / discharge motor 2 connected to the top of the landing gear 1, and a wheel 4 connected to the bottom via a wheel fork 3. A shock-absorbing component is installed inside the landing gear 1, including a rubber sponge 11. In this application, the rubber sponge 11 is used as the core shock-absorbing material. The rubber sponge 11 is a polyurethane foam material with a resilience of 60%, possessing unique physical properties. It has excellent elastic deformation capabilities. When the aircraft landing gear is subjected to impact and vibration, the rubber sponge 11 can quickly absorb and dissipate the impact energy, effectively damping and buffering the impact, thereby reducing the impact force transmitted to the aircraft structure, lowering the risk of structural damage, and alleviating the discomfort experienced by the pilot due to impact and vibration. The overall structure is simple, requiring no complex sealing structure or gas or liquid filling system. Furthermore, utilizing the properties of the rubber sponge 11, it is suitable for aquatic working environments and has strong corrosion resistance.

[0030] In this embodiment, the landing gear 1 also includes an outer cylinder 12 and a guide rod assembly. The guide rod assembly and the shock absorption assembly are sequentially connected and arranged inside the outer cylinder 12 from top to bottom. One end of the guide rod 13 in the guide rod assembly is connected to the output end of the receiver / discharge motor 2, and the other end is connected to the shock absorption assembly. The bottom of the shock absorption assembly is connected to the wheel fork 3. The outer cylinder 12, the guide rod assembly, and the shock absorption assembly are combined to form a complete landing gear 1 structure. The shock absorption assembly achieves the shock absorption effect on the overall structure of the landing gear 1.

[0031] In this embodiment, the shock absorption assembly further includes a connector 14 and an annular component 15. One end of the connector 14 is bonded to a guide rod 13, and the other end is connected to a rubber sponge 11. The bottom of the rubber sponge 11 is provided with an annular component 15, which is fixedly connected to the wheel fork 3. The rubber sponge 11 is filled between the connector 14 and the annular component 15. This provides a structure for a shock absorption assembly, which achieves shock absorption by setting a rubber sponge between the guide rod 13 and the wheel fork 3.

[0032] In this embodiment, the annular component 15 and the wheel fork 3 are connected by several pins 5. The pins 5 are used to fix the annular component 15 and the wheel fork 3, and can also transmit part of the vibration force from the wheel fork 3 to the rubber sponge 11.

[0033] In this embodiment, the connection between the wheel fork 3 and the annular component 15 is a circular annular component 31. The circular annular component 31 and the annular component 15 are placed concentrically. Several pins 5 pass through the circular annular component 31 and then through the annular component 15 and are fixedly connected. The through holes of the several pins 5 are evenly distributed in the circumference of the circular annular component 31 and the annular component 15. The specific connection structure between the wheel fork 3 and the annular component 15 is further disclosed. By setting multiple evenly distributed pins 5, the force of vibration is transmitted more evenly.

[0034] In this embodiment, the shock absorption component includes two sections of rubber sponge 11, which are separated by a metal plate 16. The arrangement of two sections of rubber sponge 11 allows for the absorption of more vibrational force compared to a single section of rubber sponge 11, thus improving the shock absorption effect. The metal plate 16 separates the rubber sponge 11 and also absorbs some of the vibrational force, further enhancing the shock absorption effect.

Claims

1. A shock-absorbing structure for the landing gear of an amphibious aircraft, characterized in that: It includes a landing gear (1), the top of which is connected to a receiver / discharger (2), and the bottom is connected to a wheel (4) via a wheel fork (3). The landing gear (1) is equipped with a shock-absorbing component, which includes a rubber sponge (11).

2. The shock-absorbing structure for the landing gear of an amphibious aircraft according to claim 1, characterized in that: The landing gear (1) also includes an outer cylinder (12) and a guide rod assembly. The guide rod assembly and the shock absorption assembly are connected and arranged in sequence from top to bottom inside the outer cylinder (12). One end of the guide rod (13) in the guide rod assembly is connected to the output end of the receiver (2), and the other end is connected to the shock absorption assembly. The bottom of the shock absorption assembly is connected to the wheel fork (3).

3. The shock-absorbing structure for the landing gear of an amphibious aircraft according to claim 2, characterized in that: The shock absorption assembly also includes a connector (14) and an annular component (15). One end of the connector (14) is connected to a guide rod (13), and the other end is connected to a rubber sponge (11). The bottom of the rubber sponge (11) is provided with an annular component (15), and the annular component (15) is fixedly connected to the wheel fork (3).

4. The shock-absorbing structure for the landing gear of an amphibious aircraft according to claim 3, characterized in that: The connector (14) is bonded to the guide rod (13), and the rubber sponge (11) is filled between the connector (14) and the ring (15).

5. The shock-absorbing structure for the landing gear of an amphibious aircraft according to claim 3, characterized in that: The annular component (15) is connected to the wheel fork (3) by a number of pins (5).

6. The shock-absorbing structure for the landing gear of an amphibious aircraft according to claim 5, characterized in that: The connection between the wheel fork (3) and the ring part (15) is a circular ring component (31). The circular ring component (31) and the ring part (15) are placed concentrically. Several pins (5) pass through the circular ring component (31) and then through the ring part (15) and are fixedly connected. The through holes of the pins (5) are evenly distributed in the circumference of the circular ring component (31) and the ring part (15).

7. The shock-absorbing structure for the landing gear of an amphibious aircraft according to claim 1, characterized in that: The shock-absorbing assembly includes at least two sections of rubber sponge (11), which are separated by a metal plate (16).

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