Large-overload shock absorber

A shock absorber and large overload technology, applied in the direction of non-rotational vibration suppression, low internal friction springs, etc., can solve the problems of excessive coaxiality between the output shaft of the engine and the input shaft of the final reducer, potential safety hazards, and easy damage to rubber materials , to achieve good vibration reduction effect and good limit effect

Active Publication Date: 2021-01-05
CHINA HELICOPTER RES & DEV INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the rubber shock absorber is subjected to a particularly large load, the rubber material is easily damaged, which directly leads to the failure of the engine installation; when the spring-shaped shock absorber encounters a large overload, it is easy to produce unrecoverable plastic deformation, causing the installation state of the engine to deviate from the design point, it may cause the coaxiality between the output shaft of the engine and the input shaft of the final reducer to exceed the design index, which will bring a very large safety hazard

Method used

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  • Large-overload shock absorber

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Embodiment Construction

[0027] Embodiments of the present invention provide a large overload shock absorber, such as figure 1 As shown, it includes: nut 1, bearing joint 2, shock absorber upper positioning part 3, shock absorber outer shell 5, shock absorber lower positioning part 6, special bolt 7, first disc spring 8, second disc spring 10, compression spring 11;

[0028] Among them, the middle part of the special bolt 7 is provided with a first boss; the load-bearing joint 2 and the upper positioning part 3 of the shock absorber are pressed on the first boss of the special bolt 7 through the nut 1;

[0029] The lower positioning part 6 of the shock absorber is fixed on the structural frame 9 of the helicopter body, and the lower part of the special bolt 7 passes through the lower positioning part 6 of the shock absorber;

[0030] The corresponding positions on the shock absorber upper positioning part 3 and the shock absorber lower positioning part 6 are respectively provided with grooves;

[00...

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Abstract

The invention belongs to the technical field of helicopter power system design, and discloses a large-overload shock absorber. The large-overload shock absorber comprises a nut, a force bearing connector, a shock absorber upper positioning piece, a shock absorber outer shell, a shock absorber lower positioning piece, a special bolt, first disc springs, second disc springs and a compression spring;the shock absorber lower positioning piece is fixed to a helicopter body structure frame, and the lower portion of the special bolt penetrates through the shock absorber lower positioning piece; andgrooves are formed in the corresponding positions of the shock absorber upper positioning piece and the shock absorber lower positioning piece correspondingly, and the compression spring sleeves the lower portion of a first boss of the special bolt and is positioned through the grooves in the shock absorber upper positioning piece and the shock absorber lower positioning piece. The large-overloadshock absorber has a good shock absorption effect, can bear large overload, and meets the crash resistance.

Description

technical field [0001] The invention belongs to the technical field of helicopter power system design and relates to a large overload shock absorber. Background technique [0002] There are two main types of mounting of engines on helicopters, namely rigid mounting and elastic mounting. Rigid installation design is relatively simple, and it is easy to meet the crash resistance design requirements, but it is difficult to control the vibration level. Elastic installation is beneficial to improve the vibration of the helicopter and reduce the vibration level of the helicopter, but it usually cannot withstand a large overload, let alone meet the design requirements for crash resistance. [0003] In order to take into account the advantages of rigid installation and elastic installation at the same time, it must not only have a good vibration damping effect, but also meet the complex and high loads generated in the work, and must also have a certain crash resistance. The key lie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F3/02F16F15/06
CPCF16F3/02F16F15/06
Inventor 段勇亮阮红霞张宇沛王辉伍心皓
Owner CHINA HELICOPTER RES & DEV INST
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