An axial anti-shock device

Abstract

The invention belongs to the field of designs of engine supporting structures and in particular relates to an axial anti-impacting device. The axial anti-impacting device comprise a rotary connectionbody, a fixed seat, a spherical ring and a swinging part, wherein the top of the rotary connection body is connected with an engine case; the fixed seat is provided with a square through hole; the bottom of the fixed seat is connected to a rack base; the spherical ring is provided with a first through hole which penetrating through a spherical center; the spherical ring is rotatably clamped in thesquare through hole of the fixed seat; the swinging part comprises a heavy hammer and a swinging rod; and one end of the swinging rod penetrates through a first through hole of the spherical ring andis hinged to the bottom of the rotary connection body, wherein the distance between the rotary connection body and the spherical ring is shorter than the distance between the spherical ring and the heavy hammer. The axial anti-impacting device provided by the invention is simple in structure; axial impact is effectively absorbed and heat expansion also can be absorbed; and an axial force and thermal stress are balanced and the problem of stress concentration is solved.

Description

technical field [0001] The application belongs to the field of engine support structure design, and in particular relates to an axial anti-shock device. Background technique [0002] In the support system structure of the gas turbine main engine, two structural forms of main support two points and auxiliary support two points are usually adopted. [0003] Form 1. The upper end of the main support is hinged, and the lower end is rigidly fixed. The engine can only rotate along the center line connecting the two main fulcrums, and the upper and lower ends of the auxiliary support are both hinged. In the event of impact, the main support can bear axial, vertical, and lateral forces, and the auxiliary support can only bear vertical force. When thermal expansion occurs, the main fulcrum is fixed, and the auxiliary support can move freely in the axial and lateral directions. The disadvantage is: in the case of axial impact, only the main support can bear the force, and the auxilia...

AI Technical Summary

Problems solved by technology

The disadvantage is: in the case of axial impact, only the main support can bear the force, and the auxiliary support cannot bear the force, so the stress is relatively concentrated, which is easy to cause excessive local stress and affect the service life

The disadvantage is: when the axial impact occurs, although the main and auxiliary supports can bear the force, but because the auxiliary support is an elastic plate structure, it is easy to deform when the axial force is applied, and the ability to withstand the axial force is poor

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