CN219707314U - Undercarriage shimmy damping device - Google Patents

Abstract

The utility model discloses a landing gear shimmy damper, which comprises a shimmy damper body, wherein a piston rod is arranged in the shimmy damper body, and the outer wall of the end part of the piston rod is fixedly connected with a transmission rod; the outer wall of the transmission rod is fixedly provided with a positioning block, and the upper end surface of the positioning block is fixedly connected with a toothed plate; the swing reducer comprises a swing reducer body, a gear plate and a gear sleeve, wherein a buffering bin is fixedly arranged on the outer wall of the swing reducer body on the side of the gear plate, a transmission mechanism is arranged on the inner wall of the buffering bin, a limiting rod is fixedly connected with the inner wall of the buffering bin on the side of the transmission mechanism, a sliding sleeve is sleeved on the outer wall of the limiting rod, and teeth are arranged on the lower surface of the sliding sleeve in a fixed mode. The swing reducing device for the landing gear strengthens the swing reducing capability, is convenient for the device to fully reduce the swing of the front wheel landing gear, thereby being beneficial to guaranteeing the stable movement of the aircraft on the ground and improving the using effect of the device.

Description

Undercarriage shimmy damping device

Technical Field

The utility model relates to the technical field of a shimmy damping device, in particular to a landing gear shimmy damping device.

Background

The landing gear is a device below the aircraft for taking off, landing and sliding, is also the only aircraft supporting part, and belongs to an indispensable part of the aircraft, and the landing gear shimmy reducing device is a device for preventing the front wheel landing gear from shimmy on the aircraft, can absorb energy generated by the swinging of the front wheel landing gear, and is commonly provided with a piston type landing gear shimmy reducing device and a rotating plate type landing gear shimmy reducing device.

Because the swing of the front wheel undercarriage can seriously threaten the life safety of passengers on the aircraft, the swing reducing capability of the device is required to be enhanced, and the swing reducing capability of the existing undercarriage swing reducing device is insufficient, so that the swing reducing effect of the front wheel undercarriage of the device is insufficient, the stable movement of the aircraft on the ground is not guaranteed, and the using effect of the device is reduced. Aiming at the problems, the novel design is carried out on the basis of the original landing gear shimmy-reducing device.

Disclosure of Invention

The utility model aims to provide a landing gear swing reducing device, which solves the problems that the swing reducing capability of the landing gear swing reducing device provided in the background art is insufficient, the effect of reducing the swing of a front wheel landing gear of the device is insufficient, the stable movement of an aircraft on the ground is not guaranteed, and the using effect of the device is reduced.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the landing gear shimmy damper comprises a shimmy damper body, wherein a piston rod is arranged in the shimmy damper body, and a transmission rod is fixedly connected to the outer wall of the end part of the piston rod;

the outer wall of the transmission rod is fixedly provided with a positioning block, and the upper end surface of the positioning block is fixedly connected with a toothed plate;

the swing reducer comprises a swing reducer body, a gear plate and a gear sleeve, wherein a buffering bin is fixedly arranged on the outer wall of the swing reducer body on the side of the gear plate, a transmission mechanism is arranged on the inner wall of the buffering bin, a limiting rod is fixedly connected with the inner wall of the buffering bin on the side of the transmission mechanism, a sliding sleeve is sleeved on the outer wall of the limiting rod, and teeth are arranged on the lower surface of the sliding sleeve in a fixed mode.

Preferably, the transmission rod is in sliding connection with the buffer bin, and the buffer bin is connected with the positioning block through a spring.

Preferably, the transmission mechanism comprises a positioning rod and a gear, and the positioning rod is movably arranged on the inner wall of the surge bin.

Preferably, the positioning rod is rotationally connected with the buffer bin, and the outer wall of the positioning rod is fixedly connected with a gear.

Preferably, the gear is in meshed connection with the toothed plate, and the gear is meshed with the tooth bulge.

Preferably, the sliding sleeve and the buffer bin and the limiting rod form a sliding structure respectively, and the sliding sleeve is connected with the buffer bin through a spring.

The landing gear shimmy damper has the following beneficial effects: the landing gear swing reducing device has the advantages that the swing reducing capability is enhanced, the swing of the front wheel landing gear is reduced sufficiently, the stable movement of the aircraft on the ground is guaranteed, and the using effect of the device is improved;

the piston rod moves in the shimmy damper body to perform shimmy damping operation, so that the piston rod drives the transmission rod to move, the positioning block drives the spring to deform to absorb impulse when the landing gear swings, the toothed plate drives the transmission mechanism, the sliding sleeve slides along the limiting rod to drive the spring to deform to further absorb impulse, the shimmy damping capacity of the device is further enhanced, the swinging effect of the front wheel landing gear is fully reduced by the device, and stable movement of the aircraft on the ground is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall front cross-section structure of the present utility model;

FIG. 2 is a schematic diagram of the overall front view of the present utility model;

FIG. 3 is a schematic view of a positioning block in a top-down view;

fig. 4 is a schematic diagram of the overall side cross-sectional structure of the present utility model.

[ Main reference numerals Specification ]

1. A shimmy damper body; 2. a piston rod; 3. a transmission rod; 4. a positioning block; 5. a toothed plate; 6. a buffer bin;

7. a transmission mechanism; 701. a positioning rod; 702. a gear;

8. a limit rod; 9. a sliding sleeve; 10. the teeth are convex.

Detailed Description

The landing gear shimmy damper of the present utility model will be described in further detail below with reference to the drawings and embodiments of the present utility model.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be capable of being practiced otherwise than as specifically illustrated and described. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides a undercarriage shimmy damper, includes shimmy damper body 1, and the internally mounted of shimmy damper body 1 has piston rod 2, and the tip outer wall fixedly connected with transfer line 3 of piston rod 2.

The outer wall of the transmission rod 3 is fixedly provided with a positioning block 4, and the upper end surface of the positioning block 4 is fixedly connected with a toothed plate 5.

The shimmy damper body 1 outer wall fixed mounting of pinion rack 5 avris has surge bin 6, and the inner wall of surge bin 6 is provided with drive mechanism 7, and the inner wall fixedly connected with gag lever post 8 of surge bin 6 of drive mechanism 7 avris, and the outer wall cover of gag lever post 8 is equipped with sliding sleeve 9, and the lower fixed surface of sliding sleeve 9 is provided with tooth protruding 10.

The transmission rod 3 and the buffering bin 6 in the example are in sliding connection, the buffering bin 6 is connected with the positioning block 4 through a spring, the piston rod 2 is convenient to move in the shimmy damper body 1 to work, the transmission rod 3 is driven to move relative to the buffering bin 6, and accordingly the transmission rod 3 drives the positioning block 4 to press the spring to deform to absorb impulsive force, and the shimmy damper is enhanced.

The drive mechanism 7 in this example includes locating lever 701 and gear 702, and locating lever 701 movable mounting is in the inner wall of surge bin 6, is convenient for along with the transfer line 3 removes for transfer line 3 drives pinion rack 5 displacement through locating piece 4, lets pinion rack 5 drive sliding sleeve 9 displacement oppression spring deformation through drive mechanism 7, further absorbs impulsive force.

The locating lever 701 in this example is rotatably connected with the buffer bin 6, and a gear 702 is fixedly connected with the outer wall of the locating lever 701, so that the locating lever 701 rotates relative to the buffer bin 6, and the gear 702 stably rotates.

The gear 702 in this example is meshed with the toothed plate 5, and the gear 702 is meshed with the tooth protrusion 10, so that along with the movement of the toothed plate 5, the toothed plate 5 drives the gear 702 to rotate, and the gear 702 drives the tooth protrusion 10 to displace at the same time.

Sliding sleeve 9 in this case constitutes sliding structure with surge bin 6 and gag lever post 8 respectively, and sliding sleeve 9 is connected through spring and surge bin 6, is convenient for along with the displacement of tooth protruding 10 for tooth protruding 10 drives sliding sleeve 9 along surge bin 6 and gag lever post 8 slip, thereby lets sliding sleeve 9 drive spring deformation absorption impulsive force.

Working principle: according to the illustration shown in fig. 1-4, the device is installed on the front wheel undercarriage of an aircraft, when the front wheel undercarriage swings, the undercarriage pushes the piston rod 2 to move in the shimmy damper body 1, so that shimmy is reduced, at the moment, the piston rod 2 drives the transmission rod 3 to slide relative to the buffer bin 6, then the transmission rod 3 drives the positioning block 4 to move relative to the buffer bin 6 to compress the deformation of the spring to absorb the impulse of the swinging of the undercarriage, meanwhile, the positioning block 4 drives the toothed plate 5 to move, then the toothed plate 5 drives the gear 702 to rotate, and the gear 702 drives the positioning rod 701 to rotate relative to the buffer bin 6, then the gear 702 drives the toothed protrusion 10, and then the toothed protrusion 10 drives the sliding sleeve 9 to slide along the limiting rod 8 to compress the deformation of the spring to absorb the impulse, so that the pressure received by the piston rod 2 is buffered through the deformation of the spring, the shimmy reducing capability of the device is improved, the shimmy of the front wheel undercarriage is conveniently reduced sufficiently, and stable movement of the aircraft on the ground is guaranteed.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims (6)

1. A landing gear shimmy damper, characterized in that: the anti-swing device comprises a swing reducer body (1), wherein a piston rod (2) is arranged in the swing reducer body (1), and a transmission rod (3) is fixedly connected to the outer wall of the end part of the piston rod (2);

the outer wall of the transmission rod (3) is fixedly provided with a positioning block (4), and the upper end surface of the positioning block (4) is fixedly connected with a toothed plate (5);

the anti-swing device is characterized in that a buffering bin (6) is fixedly arranged on the outer wall of the anti-swing device body (1) on the side of the toothed plate (5), a transmission mechanism (7) is arranged on the inner wall of the buffering bin (6), a limiting rod (8) is fixedly connected with the inner wall of the buffering bin (6) on the side of the transmission mechanism (7), a sliding sleeve (9) is sleeved on the outer wall of the limiting rod (8), and a tooth protrusion (10) is fixedly arranged on the lower surface of the sliding sleeve (9).

2. A landing gear shimmy damper device as claimed in claim 1, wherein: the transmission rod (3) is in sliding connection with the buffer bin (6), and the buffer bin (6) is connected with the positioning block (4) through a spring.

3. A landing gear shimmy damper device as claimed in claim 1, wherein: the transmission mechanism (7) comprises a positioning rod (701) and a gear (702), and the positioning rod (701) is movably mounted on the inner wall of the surge bin (6).

4. A landing gear shimmy damper device according to claim 3, wherein: the positioning rod (701) is rotationally connected with the buffer bin (6), and a gear (702) is fixedly connected with the outer wall of the positioning rod (701).

5. A landing gear shimmy damper device as claimed in claim 4, wherein: the gear (702) is connected with the toothed plate (5) in a meshing way, and the gear (702) is meshed with the tooth convex (10).

6. A landing gear shimmy damper device as claimed in claim 1, wherein: the sliding sleeve (9) and the buffer bin (6) and the limiting rod (8) form a sliding structure respectively, and the sliding sleeve (9) is connected with the buffer bin (6) through a spring.