阅读说明：本技术 一种具有减振减重功能的盘式转子系统 (Disc rotor system with vibration damping and weight reducing functions ) 是由 王晏根 王会社 佟京泽 郭定坤 于 2021-07-28 设计创作，主要内容包括：本发明公开了一种具有减振减重功能的盘式转子系统,整体传力路线呈“Z”字型反复折返,形成类似弹簧效果,有利于吸收振动能量,具有良好的减振功能。所述主轴带有两个法兰端面,在直径较大的法兰端面上通过螺栓安装第一级轮盘,在直径较小的法兰端面上通过螺栓安装短轴,在短轴的另一端上通过螺栓安装第二、三级轮盘。轮盘与轮盘之间安装隔环,形成必要的气腔,同时增加整体的轴向刚性。所述轮盘在靠近中心区域形成楔形环槽和垂直于轮盘端面的薄壁环,并在薄壁环的末端带有连接法兰,其结构呈“Z”字型。所述楔形环槽减轻了轮盘重量,所述薄壁环和“Z”字型结构特征形成类似弹簧效果,增加转子系统的阻尼,从而形成减振效果。(The invention discloses a disc rotor system with vibration reduction and weight reduction functions, wherein the whole force transmission route is in a Z shape and is repeatedly turned back, a spring-like effect is formed, vibration energy is favorably absorbed, and the disc rotor system has a good vibration reduction function. The main shaft is provided with two flange end faces, a first-stage wheel disc is installed on the flange end face with the larger diameter through a bolt, a short shaft is installed on the flange end face with the smaller diameter through a bolt, and a second-stage wheel disc and a third-stage wheel disc are installed on the other end of the short shaft through a bolt. And a spacer ring is arranged between the wheel disc and the wheel disc to form a necessary air cavity and increase the axial rigidity of the whole body. The wheel disc is provided with a wedge-shaped ring groove and a thin-wall ring vertical to the end face of the wheel disc in a region close to the center, the tail end of the thin-wall ring is provided with a connecting flange, and the structure of the thin-wall ring is Z-shaped. The wedge-shaped ring groove reduces the weight of the wheel disc, the thin-wall ring and the Z-shaped structural feature form a spring-like effect, and the damping of the rotor system is increased, so that a vibration reduction effect is formed.)

1. A disc rotor system with vibration reduction and weight reduction functions at least comprises a main shaft, a short shaft and a plurality of wheel discs, wherein the short shaft and the plurality of wheel discs are coaxially arranged on the main shaft, the plurality of wheel discs comprise a first-stage wheel disc, a second-stage wheel disc and a third-stage wheel disc,

one end of the main shaft is provided with two flange end faces, namely a first flange end face with a larger diameter and a second flange end face with a smaller diameter, and the first flange end face is axially positioned on the outer side of the second flange end face;

the first-stage wheel disc is fixedly arranged on the end face of the first flange through a connecting piece;

the short shaft is sleeved on the main shaft in a hollow mode, and one end of the short shaft is fixedly installed on the end face of the second flange through a connecting piece;

the second-stage wheel disc and the third-stage wheel disc are fixedly arranged at the other end of the short shaft through a connecting piece;

a spacer ring which is far away from the short shaft in the radial direction is arranged between every two adjacent stages of wheel discs, so that the space between every two adjacent stages of wheel discs forms a necessary air cavity;

each be close to central zone formation wedge annular on the terminal surface of rim plate, the radial inside wall of wedge annular forms the thin wall ring that outstanding in the rim plate terminal surface in the axial, the terminal flange that radially inwards extends that forms of thin wall ring, the overall structure of wedge annular, thin wall ring, flange is "Z" style of calligraphy, each rim plate is through its flange fixed mounting in main shaft or minor axis.

2. The disc rotor system with vibration and weight reduction function according to claim 1, wherein the connecting member is a bolt and a nut.

Technical Field

The invention relates to the technical field of aero-engines and gas turbines, in particular to a disc rotor system with vibration reduction and weight reduction functions, and can simultaneously solve the problems that the disc rotor system is easy to vibrate and a wheel disc is heavy.

Background

In an aircraft engine, weight reduction is one of the targets of component design in order to achieve a high thrust-weight ratio. In aeroengines and gas turbines, rotordynamics safety becomes a key factor for the reliable operation of the whole machine, and vibration reduction becomes a key target for the design of rotor systems. Therefore, the disk and the shaft, which are the main parts of the rotor system, become the key design, and the vibration reduction and weight reduction effects need to be considered at the same time.

In existing rotor system designs, there are three forms: the drum type, the disc type and the drum disc type are combined, and the combined type engine has applications according to different engines and different working conditions. The rotor system belongs to a disc rotor and consists of a group of wheel discs and a central shaft. In a general disc rotor system, the problems of poor bending rigidity and easy generation of vibration exist, and hidden danger is brought to the dynamic safety of the complete machine rotor; meanwhile, the wheel disc is heavy, which becomes a factor restricting the increase of the thrust-weight ratio.

Disclosure of Invention

The invention aims to provide a disc rotor system with vibration reduction and weight reduction functions, which aims to solve the problem that the disc rotor system is easy to generate vibration and solve the problem of heavy weight of a wheel disc. The whole force transmission route of the rotor system is designed to be Z-shaped and repeatedly turned back, so that a spring-like effect is formed, vibration energy is favorably absorbed, and the vibration reduction device has a good vibration reduction function. A first-stage wheel disc is installed on the end face of a flange with a large diameter of a main shaft, a short shaft is installed on the end face of the flange with a small diameter, a second-stage wheel disc and a third-stage wheel disc are installed on the other end of the short shaft through bolts, and a spacer ring is installed between the wheel disc and the wheel disc to form a necessary air cavity and increase the axial rigidity of the whole body. The thin-wall ring is characterized in that a wedge-shaped ring groove and a thin-wall ring perpendicular to the end face of the wheel disc are formed in the area, close to the center, of the wheel disc, a connecting flange is arranged at the tail end of the thin-wall ring, the structure of the thin-wall ring is Z-shaped, the weight of the wheel disc is reduced through the wedge-shaped ring groove, the thin-wall ring and the structural characteristics of the Z shape form a similar spring effect, the damping of a rotor system is increased, and a vibration damping effect is formed.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a disc rotor system with vibration reduction and weight reduction functions at least comprises a main shaft, a short shaft and a plurality of wheel discs, wherein the short shaft and the plurality of wheel discs are coaxially arranged on the main shaft, the plurality of wheel discs comprise a first-stage wheel disc, a second-stage wheel disc and a third-stage wheel disc,

one end of the main shaft is provided with two flange end faces, namely a first flange end face with a larger diameter and a second flange end face with a smaller diameter, and the first flange end face is axially positioned on the outer side of the second flange end face;

the first-stage wheel disc is fixedly arranged on the end face of the first flange through a connecting piece;

the short shaft is sleeved on the main shaft in a hollow mode, and one end of the short shaft is fixedly installed on the end face of the second flange through a connecting piece;

the second-stage wheel disc and the third-stage wheel disc are fixedly arranged at the other end of the short shaft through a connecting piece;

a spacer ring which is far away from the short shaft in the radial direction is arranged between every two adjacent stages of wheel discs, so that the space between every two adjacent stages of wheel discs forms a necessary air cavity, and the axial rigidity of the whole disc rotor system is increased;

the end face of each wheel disc is provided with a wedge-shaped ring groove in a region close to the center, the radial inner side wall of each wedge-shaped ring groove is formed into a thin-wall ring protruding out of the end face of the wheel disc in the axial direction, the tail end of each thin-wall ring is formed into a connecting flange extending inwards in the radial direction, the overall structures of the wedge-shaped ring grooves, the thin-wall rings and the connecting flanges are Z-shaped, the weight of the wheel disc is reduced through the wedge-shaped ring grooves, the thin-wall rings and the Z-shaped structural characteristics form a spring-like effect, the damping of a disc rotor system is increased, and therefore a damping effect is formed, and each wheel disc is fixedly mounted on the main shaft or the short shaft through the connecting flanges of the wheel disc.

Preferably, the connecting member is a bolt and a nut.

The disc rotor system with the vibration reduction and weight reduction functions has the advantages that the whole force transmission route is repeatedly turned back in a Z shape, the effect similar to that of a spring is formed, the vibration energy is favorably absorbed, and the disc rotor system with the vibration reduction and weight reduction functions is good. And a spacer ring is arranged between the wheel disc and the wheel disc to form a necessary air cavity and increase the axial rigidity of the whole body.

In the disc rotor system with the vibration reduction and weight reduction functions, the wheel disc forms a wedge-shaped ring groove and a thin-wall ring vertical to the end face of the wheel disc in the area close to the center, and the tail end of the thin-wall ring is provided with a connecting flange which is Z-shaped in structure. The wedge-shaped ring groove reduces the weight of the wheel disc, the thin-wall ring and the Z-shaped structural feature form a spring-like effect, and the damping of the rotor system is increased, so that a vibration reduction effect is formed.

Compared with the prior art, the invention has the following beneficial effects:

the disc rotor system with the vibration reduction and weight reduction functions has the advantages that the whole force transmission route is repeatedly turned back in a Z shape, the effect similar to that of a spring is formed, vibration energy is absorbed favorably, and the disc rotor system with the vibration reduction and weight reduction functions is good. The wheel disc provided by the invention achieves the effects of vibration reduction and weight reduction in the close region through the wedge-shaped ring groove and the thin-wall ring with the flange. The main shaft provided by the invention is provided with two flange end faces with different diameters at adjacent positions, and can be used for installing the wheel disc at the fulcrum position, so that the gravity center position of the wheel disc is positioned near the fulcrum. The short shaft provided by the invention has the function of connecting the main shaft with the second and third-stage wheel discs. The spacer ring provided by the invention has the function of forming a necessary air cavity and simultaneously increasing the axial rigidity of the whole body.

In addition to the above objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a disc rotor system having vibration and weight reduction features of the present invention;

FIG. 2 is a schematic view illustrating the structural features of a spindle incorporated in the preferred embodiment of the present invention;

FIG. 3 is a schematic illustration of a structural feature of a wheel disc incorporated in a preferred embodiment of the present invention;

description of reference numerals:

1. a first stage wheel disc; 2. a second stage wheel disc; 3. a third stage wheel disc; 4. a first secondary wheel disc spacing ring; 5. a second tertiary wheel disc spacer ring; 6. a minor axis; 7. a main shaft; 8. a bolt; 9. a nut; 11. a wedge-shaped ring groove; 12. a thin-walled ring; 13. a connecting flange; 71. a first flange end face; 72. a second flange end face.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments, which are part of the present invention, are not all embodiments, and are intended to be illustrative of the present invention and should not be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an embodiment of the invention discloses a disc rotor system with vibration reduction and weight reduction functions. The disc rotor system is by main shaft 7, the minor axis 6, first level rim plate 1, second level rim plate 2, third level rim plate 3, first second level rim plate spacer ring 4, third level rim plate spacer ring 5, bolt 8, parts such as nut 9 constitute, minor axis 6, first level rim plate 1, second level rim plate 2, third level rim plate 3 coaxial setting is on main shaft 7, whole biography power route is "Z" style of calligraphy and turns back repeatedly, form similar spring effect, be favorable to absorbing vibration energy, good damping function has.

One end of the main shaft 7 is provided with two flange end faces, referring to fig. 1 and 2, namely a first flange end face 71 with a larger diameter and a second flange end face 72 with a smaller diameter, the first-stage wheel disc 1 is mounted on the first flange end face 71 with the larger diameter through bolts 8 and nuts 9, the short shaft 6 is mounted on the second flange end face 72 with the smaller diameter through bolts 8 and nuts 9, and the second and third-stage wheel discs 2 and 3 are mounted on the other end of the short shaft 6 through bolts. And the spacing rings which are far away from the short shaft 6 in the radial direction, namely the first secondary wheel disc spacing ring 4 and the second tertiary wheel disc spacing ring 5, are arranged between the wheel discs to form a necessary air cavity, and the integral axial rigidity of the disc rotor system is increased. The main shaft 7 is provided with two flange end faces with different diameters at adjacent positions, and can be used for installing a wheel disc at a fulcrum position, so that the gravity center position of the wheel disc is near the fulcrum.

In each stage of the wheel discs 1, 2 and 3, referring to fig. 1 and 3, a wedge-shaped ring groove 11 is formed on an end surface close to a central region, a thin-wall ring 12 perpendicular to the end surface of the wheel disc is formed on the radial inner side wall of the wedge-shaped ring groove 11, a connecting flange 13 extending inwards in the radial direction is formed at the tail end of the thin-wall ring 12, and the overall structure of the wedge-shaped ring groove 11, the thin-wall ring 12 and the connecting flange 13 is Z-shaped. The wedge-shaped ring groove reduces the weight of the wheel disc, the thin-wall ring and the Z-shaped structural feature form a spring-like effect, the damping of a rotor system is increased, and therefore a vibration damping effect is formed, and the wheel discs 1, 2 and 3 are fixedly installed on the main shaft 7 or the short shaft 6 through the connecting flanges 13.

The object of the present invention is fully effectively achieved by the above embodiments. Those skilled in the art will appreciate that the present invention includes, but is not limited to, what is described in the accompanying drawings and the foregoing detailed description. While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications within the spirit and scope of the appended claims.