CN217805249U

CN217805249U - Self-rotating rotorcraft undercarriage

Info

Publication number: CN217805249U
Application number: CN202221961119.1U
Authority: CN
Inventors: 许兴; 郭晓斌; 邴富强
Original assignee: Xiamen Tengxi Aviation Technology Co ltd
Current assignee: Xiamen Tengxi Aviation Technology Co ltd
Priority date: 2022-07-16
Filing date: 2022-07-16
Publication date: 2022-11-15
Anticipated expiration: 2032-07-16

Abstract

The utility model relates to a rotation gyroplane undercarriage, including setting up in the inside frame of gyroplane, still include swing arm and elastic support arm, the swing arm is the arc component, swing arm one end articulates in the frame, the swing arm other end free swing extends to the frame outside, the elastic support arm both ends are articulated with swing arm and frame respectively. The utility model discloses an undercarriage has outstanding shock resistance and absorbs the impact property, because of the risk factor that the impact produced when having reduced the rotation gyroplane and descending. Just the utility model discloses an undercarriage utilizes structural characteristic, can reduce the cost and the manufacturing convenience of undercarriage.

Description

Self-rotating rotorcraft undercarriage

Technical Field

The utility model relates to an aircraft technical field, especially a rotation gyroplane undercarriage.

Background

Autogiro is a rotorcraft in which the lift is obtained by the rotation of the rotor, rather than by power, and generally has a propulsive propeller to provide forward power, in this respect similar to a fixed wing aircraft, and is similar in appearance to a helicopter, but must have airflow through its rotor disk to rotate its rotor.

It can be understood that, because the flight speed and the lift force of the autogyro are greatly different from those of the common aircraft, the technical requirements of the autogyro landing gear are also different from those of the common aircraft.

Compared with fixed-wing airplanes and helicopters, the self-rotating gyroplanes ensure that the lift force of the posture of the airframe is relatively weak when the self-rotating gyroplanes land, so that the airframe is easy to swing when the self-rotating gyroplanes land, and generates impact with the ground. Therefore, the landing gear of the autogyro needs to have a strong impact absorbing capability. And the overall structure of rotation gyroplane is mainly with interior skeleton, and the outside cage skeleton of non-traditional aircraft, so need extend the undercarriage that certain length just can absorb the impact from gyroplane centre.

Chinese patent application No. 201921401745.3 proposes an undercarriage for rotorcraft, which is an arc-shaped structure undercarriage made of carbon fiber material. Although carbon fibers have good impact resistance and light weight. However, the designed undercarriage is of an integral arc-shaped structure and has certain elasticity, and a bounce safety accident is easy to happen after the rotorcraft is impacted when landing.

Chinese patent application No. 202020207621.8 proposes an autogyro landing gear, which is designed by using the stability characteristic of a triangular structure, and the material of the main landing gear is 7075T6, namely aircraft aluminum. It also absorbs the impact of take-off and landing of the rotorcraft through the elasticity of the material.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned rotation gyroplane problem of taking off and land, the utility model aims at providing a rotation gyroplane undercarriage promotes the descending security of gyroplane.

The embodiment of the utility model provides an in adopt following scheme to realize: the utility model provides a rotation gyroplane undercarriage, still includes swing arm and elastic support arm including setting up the frame in gyroplane inside, the swing arm is the arc component, swing arm one end articulates in the frame, the swing arm other end freely swings and extends to the frame outside, the elastic support arm both ends are articulated with swing arm and frame respectively.

Preferably, said resilient support arm is hinged to the frame tangentially to the arc of the oscillating arm.

Preferably, the frame further comprises a connecting arm mounted on the frame, and the swing arm is hinged to the connecting arm.

Preferably, a limiting block is convexly arranged on the connecting arm, the limiting block is arranged on a path along which the swinging arm swings freely, and the limiting block limits the swinging of the swinging arm.

Preferably, the frame further comprises a resilient support arm mounting base having a plurality of mounting points, the resilient support arm being pivotally connected to the resilient support arm mounting base at a mounting point.

Preferably, the elastic support arm mounting support is horizontally arranged on the rack, and a plurality of mounting holes are formed in the elastic support arm mounting support at equal intervals along the horizontal direction.

Preferably, the two swing arms are symmetrically hinged to two sides of the frame, and two ends of the two elastic supporting arms at symmetrical positions on two sides of the frame are respectively hinged to the swing arms and the frame.

Preferably, the resilient support arm is a pneumatic spring.

The utility model has the advantages that: the utility model discloses an undercarriage has outstanding shock resistance and absorbs the impact property, because of the risk factor that the impact produced when having reduced the rotation gyroplane and descending. Just the utility model discloses an undercarriage utilizes structural characteristic, can reduce the cost and the manufacturing convenience of undercarriage.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural diagram of the present invention;

fig. 3 is a third schematic structural diagram of the present invention;

fig. 4 is a fourth schematic structural diagram of the present invention.

Description of reference numerals: the device comprises a machine frame-1, a swing arm-2, an elastic supporting arm-3, a connecting arm-4, a limiting block-41 and an elastic supporting arm mounting support-5.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, the landing gear of the autogyro comprises a frame 1 arranged inside the autogyro, a swing arm 2 and an elastic support arm 3, wherein the swing arm 2 is an arc-shaped member, one end of the swing arm 2 is hinged to the frame 1, the other end of the swing arm 2 swings freely and extends to the outside of the frame 1, and two ends of the elastic support arm 3 are hinged to the swing arm 2 and the frame 1 respectively. In practical production applications, the end of the free swing arm 2 is used to mount a landing wheel. The utility model discloses an in the structure, swing arm 2 is used for extending the length of undercarriage, makes the undercarriage set up and extend sufficient width from frame 1 and be used for descending. The elastic supporting arm 3 is a rod with elasticity, and it can be spring and rod also can be hydraulic spring, the utility model provides a scheme be elastic supporting arm 3 is pneumatic spring. The resilient support arm 3 is used to connect and provide resilient cushioning and resilient support for the swing arm 2. It is noted that the hinging position of the elastic supporting arm 3 with the oscillating arm 2 is various, and can be hinged at the end position of the free oscillating end of the oscillating arm 2 or at the side wall of the middle part of the oscillating arm 2. The resilient support arm 3 and the oscillating arm 2 constitute an integral shock-resistant and energy-absorbing structure. The utility model discloses an undercarriage has outstanding impact resistance and absorbs the impact property, because of the risk factor that the impact produced when greatly reduced the rotation gyroplane descends. Just the utility model discloses an undercarriage utilizes structural characteristic, needn't adopt expensive carbon fiber or aviation aluminum product, but the cost and the manufacturing convenience of greatly reduced undercarriage.

The arc design of swing arm 2 not only can increase the height of swing arm 2, height when the adjustment gyroplane descends, can also improve the intensity of swing arm 2, reduces swing arm 2 because of the deformation that takes off and land many times and receive the impact and take place, and the swing arm 2 of high strength can reduce the reliance to the material, only uses steel just can reach the intensity of materials such as aviation aluminium, carbon fiber.

The elastic supporting arm 3 is hinged with the machine frame 1 along the tangential direction of the arc of the swing arm 2. This design is convenient for elastic support arm 3 transmits the impact that swing arm 2 received fast, reduces elastic support arm 3 and 2 articulated position atress of swing arm. The elastic supporting arm 3 can further reduce the size of the undercarriage along the arc-shaped tangential setting of the swing arm 2, the undercarriage of the rotorcraft is arranged on the rack 1 inside, and the smaller undercarriage size can facilitate the saving of the internal volume of the rotorcraft.

The frame 1 further comprises a connecting arm 4 erected on the frame 1, and the swing arm 2 is hinged to the connecting arm 4. The link arm 4 can further lengthen the extension distance of the oscillating arm 2.

A limiting block 41 is convexly arranged on the connecting arm 4, the limiting block 41 is arranged on a free swinging path of the swinging arm 2, and the limiting block 41 limits the swinging of the swinging arm 2. The stopper 41 prevents the elastic support arm 3 from failing in an extreme case so that the swing arm 2 swings in a wide range. The utility model discloses the stopper 41 of setting is outstanding on 2 upper portions of swing arm, still is provided with the bulge bolt on the swing arm 2 for further adjust the spacing degree of stopper 41.

The frame 1 further comprises an elastic supporting arm mounting support 5 with a plurality of mounting points, and one mounting point of the elastic supporting arm 3 is hinged with the elastic supporting arm mounting support 5.

The utility model discloses in, elastic support arm erection support 5 level sets up in frame 1, and elastic support arm erection support 5 is gone up and is set up a plurality of mounting holes along the horizontal direction equidistance.

The elastic support arm mounting support 5 can also be arranged as a plate with a plurality of columns of vertically arranged mounting holes, and the elastic support arm mounting support 5 is vertically arranged on the frame 1. Similarly, the elastic support arm mounting seat 5 can be configured in other shapes, and the main purpose is to facilitate adjustment and mounting of the elastic support arms 3 with different sizes. And by selecting the elastic support arms 3 with adjustable elasticity, the elasticity of the elastic support arms 3 can be further accurately adjusted.

The utility model discloses in, two swing arm 2 symmetry articulate in frame 1 both sides, two elastic support arm 3 in frame 1 both sides symmetric position both ends respectively with swing arm 2 and frame 1 articulated. The symmetrical arrangement facilitates the installation of the landing gears with the same stress on the two sides.

The points to be explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, "upper," "lower," "left," and "right," and the like are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed.

Secondly, the method comprises the following steps: the utility model discloses in the embodiment figure, only involve with the structure that this disclosed embodiment involves, other structures can refer to common design, under the conflict-free condition, the utility model discloses same embodiment and different embodiments can the intercombination.

Finally, it is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses technical scheme under the thinking all belongs to the utility model discloses a scope of protection.

It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a rotation gyroplane undercarriage, includes frame (1) that sets up inside the gyroplane, its characterized in that: still include swing arm (2) and elastic support arm (3), swing arm (2) are the arc component, swing arm (2) one end articulates on frame (1), the free swing of swing arm (2) other end extends to frame (1) outside, elastic support arm (3) both ends are articulated with swing arm (2) and frame (1) respectively.

2. An autogiro landing gear according to claim 1, wherein: the elastic supporting arm (3) is hinged with the machine frame (1) along the arc-shaped tangential direction of the swinging arm (2).

3. An autogiro landing gear according to claim 1, wherein: the frame (1) further comprises a connecting arm (4) erected on the frame (1), and the swing arm (2) is hinged to the connecting arm (4).

4. An autogiro landing gear according to claim 3, wherein: a limiting block (41) is convexly arranged on the connecting arm (4), the limiting block (41) is arranged on a path where the swinging arm (2) can freely swing, and the limiting block (41) limits the swinging of the swinging arm (2).

5. An autogiro landing gear according to claim 1, wherein: the frame (1) further comprises an elastic supporting arm mounting support (5) with a plurality of mounting points, and one mounting point of the elastic supporting arm (3) is hinged to the elastic supporting arm mounting support (5).

6. An autogiro landing gear according to claim 5, wherein: elastic support arm erection support (5) level sets up in frame (1), sets up a plurality of mounting holes along horizontal direction equidistance on elastic support arm erection support (5).

7. An autogiro landing gear according to claim 1, wherein: the two swing arms (2) are symmetrically hinged to two sides of the rack (1), and the two elastic supporting arms (3) are hinged to the swing arms (2) and the rack (1) respectively at two ends of the rack (1) at two symmetrical positions.

8. An autogiro landing gear according to claim 1, wherein: the elastic supporting arm (3) is a pneumatic spring.