Aero-engine metal-rubber damping support

Abstract

The present application relates to a kind of aero-engine metal rubber damping support, support body, metal damping rubber wire, metal damping rubber strip and damping ring assembly;Variable stiffness support base features are realized by forging, mainly including U-shaped stiffener, corner protrusion, with the smaller contact area of the mounting edge and clamp of machine case, different areas of variable cross-sectional dimension and the reserved metal damping rubber setting area.Metal rubber is prepared, and metal rubber is pressed into shape according to the reserved size on variable stiffness support base.The pressed metal rubber is welded on the variable stiffness support base.The small assembly of bow type damping spring, metal damping rubber wire, damping inner ring, damping outer ring is assembled by temperature difference assembly method in the two through holes of support body support structure.The present application can meet the damping function requirement of aero-engine external system pipeline to support, and can solve the problem that traditional pipeline support cannot be damped.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of an aero-engine support, in particular to an aero-engine metal-rubber damping support. BACKGROUND

[0002] The aero-engine pipeline clamp support is generally an L-shaped structure with two through holes or threaded holes, one end of which is connected to the mounting edge of the casing through a bolt, and the other end is connected to the pipeline single clamp clamp through a bolt, thereby playing a role of rigid support.

[0003] At present, the rigidity of the aero-engine pipeline support is sufficient, but it cannot play a damping role. In the harsh vibration environment of the aero-engine, strong vibration energy is often transmitted to the pipeline, thereby bringing potential safety hazards to the use of the engine. SUMMARY

[0004] To solve the above technical problems, the present application provides an aero-engine metal-rubber damping support; the specific technical solutions are as follows:

[0005] An aero-engine metal-rubber damping support, a support body, metal damping rubber wires, metal damping rubber strips, and a damping ring assembly;

[0006] The outer contour of the support body is in an L-shaped structure, and is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole and is fixed by heating or liquid nitrogen cooling;

[0007] A special-shaped mounting groove a is arranged on the side wall of the support body between the two through holes, and a U-shaped reinforcing rib is arranged on the inner side of the corner, and the U-shaped reinforcing rib is in communication with a special-shaped mounting groove a arranged on the inner side of the corner;

[0008] A fan-shaped protrusion is arranged at the transverse and longitudinal corner of the support;

[0009] An end face lightening groove is arranged at the other end of the through hole a of the support body, so that the end face is in a convex shape, and is used for reducing the contact area with the casing and the clamp;

[0010] A special-shaped mounting groove b is arranged at the other end of the through hole b of the support body;

[0011] The damping ring assembly comprises a damping inner ring, a damping outer ring, a bow-shaped damping spring, and metal damping rubber wires;

[0012] The damping inner ring is arranged inside the damping outer ring, and the two form a cavity;

[0013] The bow-shaped damping spring is in a spiral shape and is uniformly arranged in the cavity between the damping inner ring and the damping outer ring by welding or 3D printing;

[0014] Metal damping rubber wires are filled in the cavity between the two bow-shaped damping springs.

[0015] The metal damping rubber strip is attached in the profiled mounting groove a and the profiled mounting groove b by spot welding; and is used for absorbing and consuming vibration energy transmitted to the support.

[0016] The metal rubber damping support of the aero-engine has the following preferred arrangement: the bow-shaped damping spring and the metal damping rubber wire are arranged in three groups or more.

[0017] The metal rubber damping support of the aero-engine has the following preferred arrangement: the groove depth of the profiled mounting groove a and the profiled mounting groove b is arranged to be less than 1 / 4 of the groove width.

[0018] The metal rubber damping support of the aero-engine has the following preferred arrangement: the metal damping rubber strip is formed by compression molding according to the size reserved in the profiled mounting groove a and the profiled mounting groove b.

[0019] A processing method of a metal rubber damping support of an aero-engine, and the steps are as follows:

[0020] Step one: realize the base body features of the variable rigidity support body through forging, mainly including a U-shaped reinforcing rib, a corner protrusion, a smaller contact area on the mounting edge of the case and the clamp, different variable cross-sectional dimensions, and a reserved metal damping rubber strip arrangement area;

[0021] Step two: prepare the metal rubber, and compression mold the metal rubber according to the reserved size of each profiled mounting groove on the variable rigidity support base body;

[0022] Step three: weld the compression molded metal rubber in the profiled mounting groove on the variable rigidity support base body;

[0023] Step three: assemble the damping ring assembly formed by the bow-shaped damping spring, the metal damping rubber wire, the damping inner ring, and the damping outer ring in the two through holes of the support body by the temperature difference assembly method.

[0024] Compared with the prior art, the present application has the following beneficial technical effects:

[0025] The present application keeps consistent with the conventional support outer size specification, solves the problem that the conventional pipeline support cannot damp, and creatively designs the pipeline support into a profiled support. The profiled support can meet the safety use requirement in strength through the U-shaped reinforcing rib and other measures. The metal damping rubber arrangement area is reserved on the profiled support. The metal damping rubber is additionally arranged in the transverse and longitudinal directions in these areas, so that the support has a damping function, and the contact area with the case and the clamp is reduced. The metal damping rubber is additionally arranged in the contact area, the transmission of vibration energy is maximally reduced, and the damping function requirement of the support of the external pipeline system of the aero-engine is met. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 This is a schematic diagram of an existing aircraft engine support structure;

[0027] Figure 2 A schematic diagram of a metal-rubber vibration damping bracket structure for an aero-engine;

[0028] Figure 3 for Figure 2 Diagram of A-direction / B-direction;

[0029] Figure 4 This is a schematic diagram of the main structure of the support frame;

[0030] Figure 5 A schematic diagram of the compression molding process for metal vibration damping rubber strips;

[0031] Figure 6 This is a schematic diagram of a vibration damping bracket for welded metal damping rubber.

[0032] In the diagram: 1. Bow-shaped damping spring; 2. Metal damping rubber wire; 3. Inner damping ring; 4. Outer damping ring; 5. Metal damping rubber strip; 6. Main body of the bracket; 7. End face weight reduction groove; 9. U-shaped reinforcing rib; 10. Irregular mounting groove a; 11. Fan-shaped protrusion; 12. Irregular mounting groove b; 13. Through hole a; 14. Through hole b. Detailed Implementation

[0033] The following is in conjunction with the appendix Figures 1-6 The present invention will be described in detail, but the scope of protection of the present invention is not limited by the accompanying drawings.

[0034] A metal-rubber vibration damping bracket for an aircraft engine, comprising a bracket body 6, metal vibration damping rubber wires 2, metal vibration damping rubber strips 5, and a vibration damping ring assembly;

[0035] The outer contour of the main body 6 of the bracket is L-shaped and has through holes a13 and b14. The vibration damping ring assembly is set in the through holes and is fixed by heating or liquid nitrogen cooling.

[0036] The side wall of the bracket body 6 between the two through holes is provided with a special-shaped mounting groove a10, and a U-shaped reinforcing rib 9 is provided on the inner side of the corner. The U-shaped reinforcing rib 9 is connected to a special-shaped mounting groove a10 provided on the inner side of the corner.

[0037] The bracket body 6 has a fan-shaped protrusion 11 at the horizontal and vertical corners on the outside;

[0038] The other end of the through hole a13 of the bracket body is provided with an end face weight reduction groove 8, so that its end face is convex, which is used to reduce the contact area with the casing and clamp.

[0039] The other end of the through hole b14 of the bracket body 6 is provided with a special-shaped mounting groove b12;

[0040] The damping ring assembly includes a damping inner ring 3, a damping outer ring 4, a bow-shaped damping spring 1 and a metal damping rubber wire 2;

[0041] The damping inner ring 3 is arranged inside the damping outer ring 4, and both form a cavity;

[0042] The bow-shaped damping spring 1 is spiral-shaped and is arranged in the cavity between the damping inner ring 3 and the damping outer ring 4 by welding or 3D printing;

[0043] The cavity between the two bow-shaped damping springs 1 is filled with the metal damping rubber wire 2;

[0044] The metal damping rubber strip 5 is attached in the special-shaped mounting groove a10 and the special-shaped mounting groove b12 by spot welding; and is used for absorbing and consuming vibration energy transmitted to the support.

[0045] The bow-shaped damping spring 1 and the metal damping rubber wire 2 are arranged in three groups or more.

[0046] The groove depth of the special-shaped mounting groove a10 and the special-shaped mounting groove b12 is set to be less than 1 / 4 of the groove width.

[0047] The metal damping rubber strip 2 is press-formed according to the size reserved by the special-shaped mounting groove a10 and the special-shaped mounting groove b12.

[0048] A processing method of an aero-engine metal rubber damping support:

[0049] Step one: realize the base body features of the variable stiffness support body through forging, mainly including U-shaped reinforcing ribs, corner protrusions, smaller contact areas on the casing mounting edge and the clamp, different variable cross-sectional sizes and reserved metal damping rubber strip setting areas;

[0050] Step two: prepare the metal rubber, and press-form the metal rubber according to the reserved sizes of the special-shaped mounting grooves on the variable stiffness support base body;

[0051] Step three: weld the press-formed metal rubber in the special-shaped mounting grooves on the variable stiffness support base body;

[0052] Step three: install the damping ring assembly formed by the bow-shaped damping spring, the metal damping rubber wire, the damping inner ring and the damping outer ring in the two through holes of the support body by the temperature difference assembly method.

Claims

1. An aeroengine metal-rubber vibration mount, characterized by: Support body, metal damping rubber wire, metal damping rubber strip and damping ring assembly The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The side wall of the support body between the two through holes is provided with a special-shaped mounting groove a, and the inner side of the corner is provided with a U-shaped reinforcing rib. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole.

2. The metal-rubber vibration damper support of claim 1, wherein: The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole.

3. The metal-rubber vibration damper support of claim 1, wherein: The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole.

4. The metal-rubber vibration damper support of claim 1, wherein: The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and the damping ring assembly is arranged in the through hole. The support body is provided with a through hole a and a through hole b, and

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