Fold-back elastic support structure and engine
An elastic support and foldback technology, applied in the direction of flexible bearings, rigid supports of bearing components, bearings, etc., can solve problems such as deformation, and achieve the effects of wide support stiffness, good reliability and simple structure
Active Publication Date: 2021-12-24
AECC HUNAN AVIATION POWERPLANT RES INST
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Problems solved by technology
[0003] The invention provides a turn-back elastic support structure and an engine to solve the technical problem that the existing elastic ring-type elastic support is easily deformed in a limited space
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[0029] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0030] figure 1 It is a schematic diagram of the axial section of the turn-back elastic support structure of the preferred embodiment of the present invention.
[0031] Such as figure 1 As shown, the turn-back elastic support structure of this embodiment is used for the elastic support of the rotor, including: a first ring 1 that surrounds the rotor main shaft and rests on the bearing of the rotor main shaft; The second ring 2 arranged outside and coaxial with the first ring 1; the bending part 3 for connecting the first ring 1 and the second ring 2; the first ring 1, the bending part 3 and the second ring The second ring 2 is integrally molded and forms an axial section of Shaped base str...
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The invention discloses a turn-back elastic support structure and an engine, which are used for the elastic support of the rotor, comprising: a first ring that surrounds the rotor main shaft and rests on the bearing of the rotor main shaft; and a second ring arranged coaxially with the first ring; a bending part for connecting the first ring and the second ring; the first ring, the bending part and the second ring are integrally formed to form a shaft The cross-section is shaped matrix structure. The turn-back elastic support structure of the present invention, through the design of the first ring and the second ring, in a limited axial space, under the premise of meeting the support stiffness, through the design of the turn-back elastic support structure, the corresponding reduction of support stiffness of the structure. At the same time, it can limit excessive deformation of the foldback elastic support structure, thereby ensuring the reliability of the structure. The utility model has the advantages of controllable stiffness, simple structure, low manufacturing cost, wide application range, long service life and good reliability, and is suitable for being used as a rotor mechanical elastic support.
Description
technical field [0001] The invention relates to the field of elastic support, in particular, to a turn-back elastic support structure. The present invention also relates to an engine comprising the above-mentioned folding elastic support structure. Background technique [0002] The operating speed of modern aero-engines is generally above 10,000r / min, and the operating speed of some small engines is as high as 50,000r / min. Most of their high-speed rotor systems adopt a "flexible shaft" design, so that the engine's operating speed is higher than the critical speed of the rotor system. It is often very difficult to adjust the critical speed by changing the structural axis (diameter, fulcrum distance, etc.) of the rotor. At present, there are mainly two types of elastic support structures: cage-type elastic support and elastic ring-type support. Cage springs usually require a large axial space. In the case of limited axial space, cage springs are difficult to realize in terms...
Claims
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IPC IPC(8): F16C27/00
CPCF16C27/00
Inventor 王月华王建方
Owner AECC HUNAN AVIATION POWERPLANT RES INST