CN110030325B

CN110030325B - Flywheel of inertia test bed and manufacturing method

Info

Publication number: CN110030325B
Application number: CN201910251074.5A
Authority: CN
Inventors: 李宋; 白钧生; 崔雄; 王甘牛; 王靖
Original assignee: Xian Lily Aviation Technology Co ltd; AVIC Aircraft Strength Research Institute
Current assignee: Xian Lily Aviation Technology Co ltd; AVIC Aircraft Strength Research Institute
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2021-07-09
Anticipated expiration: 2039-03-29
Also published as: CN110030325A

Abstract

The application provides an inertia test bed flywheel and a manufacturing method thereof, and belongs to the technical field of aviation flywheel tests. This flywheel is including setting up annular a plurality of radials, and every radials includes inner edge portion (1) that is close to the flywheel axle along radial direction, keeps away from outer fringe portion (2) and the setting of flywheel axle are in middle part (3) between inner edge portion and the outer fringe portion, a plurality of radials are followed the axial direction of flywheel axle is folded each other and is made together, and the tang cooperation is passed through to the outer fringe of adjacent radials, the thickness of the middle part of radials is less than the thickness of its outer fringe part to form the clearance between the middle part of adjacent radials. The manufacturing method of the flywheel increases the bending-resistant section coefficient of the radial plate, reduces the mass of the flywheel, and solves the problem that the size, strength and inertia of the flywheel are not matched.

Description

Flywheel of inertia test bed and manufacturing method

Technical Field

The application belongs to the technical field of aviation flywheel tests, and particularly relates to an inertia test bed flywheel and a manufacturing method thereof.

Background

The flywheel has the structural forms of an integral type, a spoke plate type and the like, similar inertia test beds are also owned by the industries of automobiles, high-speed rails and wind power in China, the flywheels of the test beds are only simple energy storage devices, have small inertia, have no limiting conditions of size and load, and are mostly of an integral type or spoke plate type structure. The flywheel of the aviation inertia test bed not only needs to meet the requirements of diameter, width, strength and rigidity required by the loading of an airplane wheel, but also needs to meet the requirement of inertia of an electric dragging system, and meanwhile, the smaller the mass of the flywheel is, the better the flywheel is, and the improvement of the critical rotating speed of the whole transmission system is facilitated.

Disclosure of Invention

In order to solve at least one of the above technical problems, the present application provides an inertia test bed flywheel and a manufacturing method thereof.

The utility model provides a first aspect, an inertia test platform flywheel, including setting up annular a plurality of radials, every radials includes along the radial direction inner edge portion that is close to the flywheel axle, keeps away from the outer fringe part and the setting of flywheel axle are in middle part between inner edge portion and the outer fringe part, a plurality of radials are followed the axial direction of flywheel axle is folded each other and is made together, and the tang cooperation is passed through to the outer fringe of adjacent radials, the thickness of the middle part of radials is less than the thickness of its outer fringe part to form the clearance between the middle part of adjacent radials.

Preferably, the spoke plate comprises a first spoke plate located in the middle, and a second spoke plate and a third spoke plate located on two sides of the first spoke plate respectively, one side of the outer edge portion of the first spoke plate is in compression joint with the outer edge of the second spoke plate, and the other side of the outer edge portion of the first spoke plate is in compression joint with the third spoke plate.

Preferably, the number of the webs is three, and the outer edge of the web located in the middle is crimped to the outer edges of the webs located on both sides.

Preferably, the outer edges of adjacent webs are interference fit at the spigot connection.

Preferably, the outer edge portions of the web are radiused towards the intermediate portion.

Preferably, a thickness of a first end of the intermediate portion of the web proximate the outer edge portion is less than a thickness of a second end of the intermediate portion proximate the inner edge portion.

Preferably, the thickness of the intermediate portion increases in a stepwise manner as the first end of the intermediate portion extends toward the second end.

Preferably, the inner edge portion of the web transitions into an arc of a middle portion.

In a second aspect of the present application, a method of manufacturing the inertia test stand flywheel described above includes:

respectively manufacturing a plurality of wheel plates, and reserving machining allowance for the outer edge parts of the wheel plates;

respectively installing each radial plate from one end along the axial direction of the flywheel shaft, heating the radial plate installed later when the adjacent radial plates are assembled in a stacking mode, then pressing the outer edge part of the radial plate installed later to the outer edge part of the radial plate installed in the front through the seam allowance, cooling the radial plate installed later, and achieving interference fit of the adjacent radial plates;

after all the radial plates are stacked and installed, the outer edge of the flywheel is integrally processed, and the roundness of the flywheel is guaranteed.

The flywheel spoke plate structure is optimized, the plurality of flywheels are sequentially subjected to interference assembly, the flywheels can meet the loading strength and rigidity requirements under the condition that the area requirements of the diameter and the width of the airplane wheel loading are met, and meanwhile, the inertia and the rotating speed of the flywheels meet the composite requirements of an electric dragging system.

The manufacturing method of the flywheel increases the bending-resistant section coefficient of the radial plate, reduces the mass of the flywheel, and solves the problem that the size, strength and inertia of the flywheel are not matched.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of an inertia test stand flywheel according to the present application.

FIG. 2 is a schematic view of the web assembly of the inertia test stand flywheel of the present application.

Wherein 1-inner edge portion, 2-outer edge portion, 3-middle portion, 10-first web, 20-second web, 30-third web, 31-first end, 32-second end.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. 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 are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.

The application discloses an inertia test bed flywheel and a manufacturing method thereof. According to the first aspect of this application, an inertia test platform flywheel is provided, as shown in FIG. 1, including setting up annular a plurality of radials, every radials includes along radial direction near the inner edge portion 1 of flywheel axle, keep away from the outer fringe portion 2 and the setting of flywheel axle are in intermediate portion 3 between inner edge portion and the outer fringe portion, a plurality of radials are followed the axial direction of flywheel axle is folded each other and is made together, and the tang cooperation is passed through to the outer fringe of adjacent radials, the thickness of the intermediate portion of radials is less than its outer fringe portion's thickness to form the clearance between the intermediate portion of adjacent radials.

This application replaces current integral flywheel structure through a plurality of radials, can save the material of the middle part of every radials, has alleviateed flywheel weight, is favorable to improving whole transmission system's critical speed, and simultaneously, the middle part of a plurality of radials supports the inner and outer edge side by side, still accords with the requirement on intensity, rigidity requirement, also satisfies the inertia requirement of electric drive system simultaneously.

In some alternative embodiments, as shown in fig. 2, the web comprises a first web 10 in the middle, and a second web 20 and a third web 30 respectively on both sides of the first web 10, and the outer edge portion of the first web is crimped on one side to the outer edge of the second web 20, and the other side is crimped by the third web 30.

In some alternative embodiments, the web comprises three, the outer edge of the web in the middle being crimped to the outer edges of the webs on both sides.

It will be appreciated that in order to secure a plurality of webs to one another, typically by crimping them to one another in a bayonet fitting manner and controlling the stability of the bond between them by controlling the strength of the crimp, fig. 1-2 show the interconnection of three webs, the bayonet being a centering, connecting structure, one being a male bayonet and the other being a female bayonet. The two are paired to form a step surface, the first web 10 is located in the middle, the outermost end of the right side of the first web is provided with a flange, the corresponding second web 20 is located on the right side of the second web, the outermost end of the left side of the first web is provided with a notch, and the flange of the first web 10 is pressed on the notch of the second web 20, so that the first web and the second web are fixed, and similarly, the first web and the third web 30 on the left side of the first web are connected in the same way.

In some alternative embodiments, the outer edges of adjacent webs are interference fit at the spigot connection.

In some alternative embodiments, referring to FIG. 1, the outer rim portion 2 of the web arcs towards the middle portion 3. By means of the arc-shaped transition the stiffness of the web as the outer rim portion 2 extends inwards is increased.

In some alternative embodiments, a first end 31 of the middle portion of the web proximate the outer edge portion has a thickness that is less than a thickness of a second end 32 of the middle portion proximate the inner edge portion.

In some alternative embodiments, as shown in FIG. 1, the thickness of the intermediate portion increases in a stepwise manner as the first end 31 of the intermediate portion extends toward the second end 32. In alternative embodiments, the thickness of the intermediate portion may also increase linearly as the first end 31 extends toward the second end 32.

In some alternative embodiments, the inner edge portion 1 of the web is radiused towards the intermediate portion 3.

In a second aspect of the present application, a method of manufacturing an inertial test stand flywheel as described above, comprises:

step 1, respectively manufacturing a plurality of radial plates, and enabling the outer edge parts of the radial plates to have enough machining allowance;

step 2, respectively installing each spoke plate from one end along the axial direction of the flywheel shaft, heating the spoke plate installed later when the adjacent spoke plates are overlapped and assembled, then pressing the outer edge part of the spoke plate installed later to the outer edge part of the spoke plate installed before through the seam allowance, cooling the spoke plate installed later, and realizing the interference fit of the adjacent spoke plates;

and 3, after all the radial plates are stacked and installed, integrally processing the outer edge of the flywheel to ensure the roundness of the flywheel.

Taking three radial plates as an example, a first radial plate (1# sub flywheel), a second radial plate (2# sub flywheel) and a third radial plate (3# sub flywheel) are formed, three sub flywheels are firstly processed respectively, and the rims of the sub flywheels are left with enough processing allowance. During assembly, the 1# sub flywheel is used as a base, the 1# flywheel is heated, and the rim of the sub flywheel is in interference fit with the rim spigot of the 2# sub flywheel; and (3) heating the 3# sub flywheel, assembling the rim of the sub flywheel and the rim of the 1# sub flywheel in an interference manner, and combining the three sub flywheels into a flywheel. The circumferential surface of the interference assembled flywheel is easy to deform, and the roundness of the flywheel is ensured by processing the rim of the flywheel.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An inertia test bed flywheel, characterized by, including setting up a plurality of radials in the annular, every radials includes the inner edge part (1) that is close to the flywheel axle along the radial direction, keeps away from the outer fringe part (2) of the flywheel axle and sets up the middle part (3) between inner edge part and outer fringe part, a plurality of radials are folded each other along the axial direction of the flywheel axle and are made together, the outer fringe of adjacent radials is passed through the tang and is cooperated, the thickness of the middle part of the radials is less than the thickness of its outer fringe part to form the clearance between the middle part of the adjacent radials;

the outer edges of adjacent radial plates are in interference fit at the seam allowance connection part, the radial plates are respectively installed from one end along the axial direction of the flywheel shaft, when the adjacent radial plates are assembled in a stacking mode, the radial plate installed behind is heated, then the outer edge part of the radial plate installed behind is pressed on the outer edge part of the radial plate installed in front through the seam allowance, the radial plate installed behind is cooled, and the interference fit of the adjacent radial plates is achieved;

wherein, the thickness of the first end (31) of the middle part of the radials that is close to outer fringe part is less than the thickness of the second end (32) of the middle part that is close to inner fringe part, when the first end (31) of middle part extends to second end (32), the thickness of middle part is the notch cuttype and increases.

2. An inertia test stand flywheel as claimed in claim 1 wherein the web comprises a first web (10) in the middle, and second and third webs (20, 30) respectively on either side of the first web (10), the outer rim portion of the first web being crimped on one side to the outer rim of the second web (20) and on the other side by the third web (30).

3. An inertia test stand flywheel as claimed in claim 1 wherein the web comprises three, the outer edge of the web in the middle being crimped to the outer edge of the web on both sides.

4. An inertial test stand flywheel according to claim 1, characterized in that the outer rim portion (2) of the web transitions in a circular arc towards the intermediate portion (3).

5. An inertial test stand flywheel according to claim 1 characterized in that the inner rim portion (1) of the web transitions in a circular arc towards the intermediate portion (3).