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Band type damper and preparation method thereof

A damper and plate-type technology, which is applied in the improvement field of helicopter rotor plate-type dampers, can solve the problems of complex vulcanization molding molds, difficult processing, and high processing costs, and achieve the effects of low cost, easy processing, and small installation space

Active Publication Date: 2012-06-20
BAIMTEC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: first, the processing is difficult and the processing cost is high
Third, there is no overload limit design, which will cause safety hazards under overload conditions
Fourth, since the rubber layer and the metal plate are bonded together through vulcanization, the vulcanization molding mold is more complicated

Method used

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  • Band type damper and preparation method thereof
  • Band type damper and preparation method thereof
  • Band type damper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The left outer plate 30a, the left secondary middle plate 20a, the middle plate 10, the right secondary middle plate 20b and the right outer plate 30b are titanium alloy flat plates, which are processed on the outer surface of the left outer plate 30a corresponding to the four corners of the left pressing plate 50a There are four threaded holes, and four threaded holes are processed on the outer surface of the right outer plate 30b corresponding to the four corners of the right pressing plate 50b.

[0050] The material of the rubber plate 41 in the interlayer plate 40 is high damping silicon rubber, and the thickness of the metal plate 42 is 1.5mm, and the material is stainless steel.

[0051] The inner surface of the body of the left outer plate 30a, the two sides of the body of the left secondary middle plate 20a, the two sides of the body of the middle plate 10, the two sides of the body of the right secondary middle plate 20b and the inner surface of the body of the ...

Embodiment 2

[0057] The left outer plate 30a, the left secondary middle plate 20a, the middle plate 10, the right secondary middle plate 20b and the right outer plate 30b are flat plates made of stainless steel, and finite grooves are respectively processed in the middle of the outer surfaces of the left outer plate 30a and the right outer plate 30b.

[0058] The rubber plate 41 in the sandwich plate 40 is made of damping foam material, and the metal plate 42 has a thickness of 3 mm and is made of aluminum alloy.

[0059] The inner surface of the body of the left outer plate 30a, the two sides of the body of the left secondary middle plate 20a, the two sides of the body of the middle plate 10, the two sides of the body of the right secondary middle plate 20b and the inner surface of the body of the right outer plate 30b Grooves having the same dimensions as the metal plate 42 are correspondingly processed respectively.

[0060] The material of the left pressing plate 50a and the right pres...

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Abstract

The invention belongs to the technical field of multilayer shearing viscoelastic dampers, and relates to an improvement on a band type damper of a helicopter rotor wing. The band type damper comprises five rigid slabs and four sandwich plates, wherein, the four sandwich plates are positioned between the five rigid slabs. A preparation method of the band type damper comprises the steps as follows: the sandwich plates of the band type damper are prepared firstly, and then the five rigid slabs and the four sandwich plates are assembled so as to form the band type damper. The band type damper can be used for adjusting the thickness of rubber plates of the sandwich plates or the number of the sandwich plates so as to satisfy the rigidity and damping requirements of different helicopter rotor wing systems; the band type damper is easy to form, convenient to process and easy to assemble, and has the advantages of low cost, small installation space and overload limiting capability; the band type damper is convenient to maintain, the sandwich plates can be checked visually, the sandwich plates out of operation are convenient to replace, the rigid slabs can be used for a long time without replacement, and maintenance cost is saved; and the band type damper is easy to dissipate heat, and prolongs the service life.

Description

technical field [0001] The invention belongs to the technical field of multi-layer shear viscoelastic dampers, and relates to the improvement of helicopter rotor plate dampers. Background technique [0002] Helicopter rotor systems all use vibration reduction devices, that is, dampers, which are key functional components in the rotor system. They can reduce the vibration of helicopter blades, improve the life of blades, and avoid the occurrence of ground resonance and air resonance. Resonance directly affects the helicopter. Safety, it can lead to disintegration of the helicopter in severe cases. [0003] US Patent No. 3,842,945 proposes two plate-type viscoelastic dampers, one of which is composed of three layers of rigid metal plates and two layers of damping elastic body, and its molding and installation are relatively complicated. The other is composed of five rigid metal plates and four layers of damping elastic body, the two rubber layers in the middle are parallel bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/51
Inventor 赖亮庆苏正涛王景鹤
Owner BAIMTEC MATERIAL CO LTD
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