CN109606713B

CN109606713B - Pure mechanical heavy landing indicating structure

Info

Publication number: CN109606713B
Application number: CN201811466723.5A
Authority: CN
Inventors: 徐环宇; 段新星; 张改华; 王斌; 李灿山; 张伟; 郭伟; 邓雯雯; 王智珠; 张丹丹; 彭睿; 屈华山; 钟小宏
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2022-08-02
Anticipated expiration: 2038-12-03
Also published as: CN109606713A

Abstract

A pure mechanical heavy landing indicating structure comprises an undercarriage buffer strut, a support and a cutter, wherein an indicating wire is arranged on the support; and undercarriage buffering pillar upper end is the stiff end, undercarriage buffering pillar lower extreme is the movable end, when the aircraft normally lands, can not bump between cutterbar and the instruction silk, when taking place heavy landing, the support of installing the instruction silk is gone into to the cutterbar and is cut off the instruction silk, do not need extra power on the aircraft, the air supply, support such as hydraulic pressure, as long as properly adjust the connection position structure, can reequip on most models, moreover, the steam generator is simple in structure, the simple operation, after accomplishing the maintenance, can resume heavy landing instruction function fast through changing the instruction silk.

Description

Pure mechanical heavy landing indicating structure

Technical Field

The invention relates to the technical field of mechanical structures, in particular to a pure mechanical heavy landing indicating structure.

Background

At present, the judgment of the aircraft heavy landing is mainly based on the interpretation and calculation of flight parameter data, which needs professionals to carry out the judgment by depending on experience, is difficult to ensure that relevant work is carried out under the condition of an outfield, and users in part of countries and regions with undeveloped economy are also equipped with relevant personnel and equipment unconditionally.

For small-sized airplanes, especially for small-sized airplanes used in regions with rough airport conditions, a structure which is convenient to judge and can quickly recover the heavy landing indicating function is urgently needed.

Disclosure of Invention

The technical problem to be solved by the present invention is to provide a purely mechanical heavy landing indicating structure to solve the above-mentioned drawbacks in the background art.

The technical problem solved by the invention is realized by adopting the following technical scheme:

a pure mechanical heavy landing indicating structure comprises an undercarriage buffer strut, a support and a cutter, wherein an indicating wire is arranged on the support; and the upper end of the undercarriage buffer strut is a fixed end, the lower end of the undercarriage buffer strut is a movable end, when the aircraft normally lands, the cutter and the indicating wire cannot collide with each other, and when heavy landing occurs, the cutter rushes into the bracket provided with the indicating wire and cuts off the indicating wire.

In the invention, the bracket consists of a bracket rod and a U-shaped mounting seat, the bracket rod is fixed at the top of the U-shaped mounting seat, and the indicating wire is arranged on the U-shaped mounting seat.

In the invention, the bracket is fixed at the upper end of the landing gear buffer strut through a first clamp, and the cutter bracket is arranged at the lower end of the landing gear buffer strut through a second clamp.

In the invention, the first hoop and the second hoop have the same structure, and the first hoop is provided with a self-locking buckle for locking the first hoop.

In the present invention, the cutter holder is of an L-shaped configuration.

In the present invention, the cutter is mounted on the cutter support by means of a bolt, a spring washer and a self-locking nut.

In the invention, the end face of the cutter for cutting the indicating wire is provided with the cutting blade, when heavy landing occurs, the cutter rushes into the bracket provided with the indicating wire, and the indicating wire is cut off after colliding with the cutting blade.

Has the advantages that: the aircraft has a simple structure, does not need additional power supply, air source, hydraulic pressure and other supports on the aircraft, and can be modified on most aircraft types only by properly adjusting the structure of the connecting part; after this heavy landing instruction structure of installation, can make things convenient for ground service personnel to judge whether the aircraft takes place heavy landing to carry out the maintenance work of pertinence, in order to guarantee flight safety, also can avoid transition to detect, influence the aircraft rate of attendance, after accomplishing the maintenance simultaneously, can resume fast through changing the instruction silk and heavily land instruction function.

Drawings

FIG. 1 is an assembled elevational view of the preferred embodiment of the present invention in an uncompressed state.

Fig. 2 is an assembled elevation view of the preferred embodiment of the present invention in a compressed state.

FIG. 3 is a front view of a cutter in a preferred embodiment of the invention.

FIG. 4 is a side view of a cutter in a preferred embodiment of the invention.

FIG. 5 is a schematic view of a bracket structure according to a preferred embodiment of the present invention.

Fig. 6 is a structural diagram of a bracket with an indicator wire installed in the bracket according to a preferred embodiment of the invention.

FIG. 7 is a schematic view of a cutter support structure in accordance with a preferred embodiment of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

Referring to fig. 1-7, a pure mechanical heavy landing indicating structure comprises an undercarriage buffer strut 1, a bracket 2 provided with an indicating wire, a first clamp 3, a second clamp 4, a cutter 5 and a cutter bracket 6, wherein the bracket 2 provided with the indicating wire is fixed at the upper end of the undercarriage buffer strut 1 through the first clamp 3, the cutter bracket 6 is installed at the lower end of the undercarriage buffer strut 1 through the second clamp 4, and the cutter 5 is installed on the cutter bracket 6 through a bolt, a spring washer and a self-locking nut; when the aircraft normally lands, the cutter 5 and the indicating wire cannot collide with each other, and when heavy landing occurs, the cutter 5 rushes into the bracket 2 provided with the indicating wire and cuts off the indicating wire, so that the distance needs to be calculated according to the landing characteristics of the landing gear of various aircraft models.

In this embodiment, the bracket 2 is composed of a bracket rod and a U-shaped mounting seat, the bracket rod is fixed on the top of the U-shaped mounting seat, and the indicating wire is mounted on the U-shaped mounting seat.

In this embodiment, No. 3 clamps are the same with No. two 4 clamps structures, are provided with the auto-lock buckle on No. 3 clamps for No. 3 clamps of locking.

In this embodiment, the cutter holder 6 is of an L-shaped configuration.

In the present embodiment, a cutting blade is provided on the end surface of the cutter 5 for cutting the indicator wire, and when heavy landing occurs, the cutter 5 is rushed into the holder 2 on which the indicator wire is mounted, and the indicator wire is cut off after colliding with the cutting blade.

In the embodiment, according to the design requirements of the landing gear of each airplane model, the landing gear and the related structure after heavy landing are overhauled, and the indicating wire is replaced after all work is completed, so that the heavy landing indicating function can be recovered by the structure.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A pure mechanical heavy landing indicating structure comprises an undercarriage buffer strut, a support and a cutter, and is characterized in that the support consists of a support rod and a U-shaped mounting seat, the support rod is fixed at the top of the U-shaped mounting seat, and an indicating wire is arranged on the U-shaped mounting seat; the cutter bracket is arranged at the lower end of the undercarriage buffer strut, and a cutter for cutting off the indicator wire is arranged on the cutter bracket; the upper end of the undercarriage buffer strut is a fixed end, and the lower end of the undercarriage buffer strut is a movable end; when the aircraft normally lands, the cutter and the indicating wire cannot collide with each other, and when heavy landing occurs, the cutter rushes into the bracket provided with the indicating wire and cuts off the indicating wire.

2. The pure mechanical heavy landing indicating structure of claim 1, wherein the support is fixed at the upper end of the landing gear buffer strut through a clamp, and the cutter support is mounted at the lower end of the landing gear buffer strut through a clamp II.

3. The pure mechanical heavy landing indicating structure of claim 2, wherein the first clamp is identical to the second clamp in structure, and the first clamp is provided with a self-locking buckle.

4. The purely mechanical heavy landing indicator structure of claim 1, wherein the cutter support is an L-shaped structure.

5. The purely mechanical heavy landing indicating structure of claim 1, wherein the cutter is mounted on the cutter support by means of bolts, spring washers and self-locking nuts.

6. The pure mechanical heavy landing indicating structure of claim 1, wherein a cutting blade is disposed on the end face of the cutter for cutting the indicating wire.