CN111173873A

CN111173873A - Spherical net-shaped disc spring

Info

Publication number: CN111173873A
Application number: CN202010118321.7A
Authority: CN
Inventors: 王相玉
Original assignee: General Engineering Research Institute China Academy of Engineering Physics
Current assignee: General Engineering Research Institute China Academy of Engineering Physics
Priority date: 2020-02-26
Filing date: 2020-02-26
Publication date: 2020-05-19
Anticipated expiration: 2040-02-26
Also published as: CN111173873B

Abstract

The invention discloses a spherical net-shaped disc spring, which is characterized in that a plurality of sub disc springs form an integrated spherical net-shaped structure through connecting pieces, the thicknesses of all parts of the spring are equal, the inner molded surface and the outer molded surface of a main body are spherical surfaces, each sub disc spring comprises an inner section, a middle section and an outer section, each section of bus can be an arc or a line segment, the inner and outer molded surfaces of each connecting piece are spherical surfaces, and the width is variable; through the mode, the novel spherical gap adjusting device is suitable for spherical gaps, can provide mechanical characteristics of constant rigidity, variable rigidity and zero rigidity, and is compact in structure and convenient to install and disassemble.

Description

Spherical net-shaped disc spring

Technical Field

The invention belongs to the field of disc springs, and particularly relates to a spherical meshed disc spring.

Background

The disc spring has the characteristics of small deformation and large bearing capacity, the space utilization rate is high, the mechanical characteristics can present the characteristics of normal rigidity, variable rigidity, zero rigidity and negative rigidity, and the disc spring can be combined in different modes and widely applied to the fields of machine tool industry, petroleum industry, automobile industry, aerospace industry and the like. The variable stiffness bearing characteristic of the disc spring is derived from geometric nonlinearity, and the disc spring is usually used between parallel pressing plates or approximately parallel pressing plates to realize the functions of buffering vibration isolation, clearance compensation and the like.

The generatrix of the disc spring is a line segment and is limited by the installation space, and the disc spring is not suitable for a spherical clearance generally. The size of the disc spring can be reduced to adapt to the spherical clearance, but the problems of excessive disc springs, complex assembly and the like are easily caused. The generatrix of the spherical disc spring is in a circular arc shape and can adapt to the spherical clearance, but the circular arc generatrix enhances the axial rigidity of the spherical disc spring, so that the spherical disc spring easily loses the bearing characteristics of zero rigidity and negative rigidity.

In order to solve the above problems, a spherical net-shaped disc spring has been developed by the inventor.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a spherical mesh disk spring.

The invention realizes the purpose through the following technical scheme:

a spherical reticulated disc spring comprising:

a plurality of sub disc springs; the plurality of sub disc springs are connected through the plurality of connecting sheets to form an integrated spherical net structure.

Furthermore, the inner profile and the outer profile of the spherical net structure are both spherical surfaces, and the inner profile and the outer profile of the connecting piece are both spherical surfaces.

Furthermore, the sub-disc spring comprises an inner section, a middle section and an outer section, the inner section, the middle section and the outer section are sequentially connected, and the outer section is connected with the connecting sheet.

Furthermore, smooth transition is carried out between the inner section and the middle section, and smooth transition is carried out between the outer section and the middle section.

Furthermore, the generatrix of the inner section, the middle section and the outer section is an arc or a line segment.

Furthermore, the thicknesses of the inner section, the middle section and the outer section are the same.

Further, the thicknesses of the plurality of sub disc springs are the same.

Further, the thickness of the sub disc spring is the same as that of the connecting piece.

Further, the plurality of sub disc springs are the same size.

Furthermore, the inner section of the sub disk spring is provided with a through hole, and the connecting piece is provided with a screw hole.

The invention has the beneficial effects that:

the spherical netted disc spring is particularly suitable for spherical gaps, can provide mechanical characteristics of constant stiffness, variable stiffness and zero stiffness, can obtain ideal mechanical characteristics by configuring the position, the number and the size of the sub disc springs, and is compact in structure and convenient to mount and dismount.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view of a sub-disc spring;

fig. 4 is a schematic diagram of mechanical properties of the present invention.

In the figure: 1-connecting piece, 2-sub disc spring, 21-inner section, 22-middle section and 23-outer section.

Detailed Description

The invention will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 and 2, a spherical net disk spring includes:

a plurality of sub disc springs 2; the plurality of sub disc springs 2 are connected through the plurality of connecting pieces 1 to form an integrated spherical net structure.

In some embodiments, as shown in fig. 1 and 2, the inner profile and the outer profile of the spherical mesh structure are both spherical, and the inner profile and the outer profile of the connecting piece 1 are both spherical.

In some embodiments, as shown in fig. 3, the sub disc spring 2 includes an inner section 21, a middle section 22, and an outer section 23, the inner section 21, the middle section 22, and the outer section 23 are connected in sequence, and the outer section 23 is connected to the connecting piece 1.

In some embodiments, as shown in fig. 3, the inner section 21 and the middle section 22 are smoothly transitioned, and the outer section 23 and the middle section 22 are smoothly transitioned.

In some embodiments, the generatrices of the inner, middle and

outer sections

21, 22, 23 are all arcs or line segments.

In some embodiments, as shown in fig. 3, the thickness of the inner section 21, the middle section 22, and the outer section 23 are the same.

In some embodiments, the plurality of sub disc springs 2 are the same thickness.

In some embodiments, the thickness of the sub disc spring 2 is the same as the thickness of the connecting piece 1.

In some embodiments, as shown in fig. 1 and 2, the plurality of sub-disc springs 2 are the same size.

In some embodiments, the plurality of sub-disc springs 2 are all different in size; or some of the sub-disc springs 2 may be the same size and some may be different.

In some embodiments, as shown in fig. 1 and 2, the inner section 21 of the sub disc spring 2 is provided with a through hole, and the connecting piece 1 is provided with a screw hole. The connecting sheet 1 can be provided with screw holes or not, and the screw holes are convenient to install.

In some embodiments, the number and position of the sub-disc springs 2 may be adjusted.

Preferably, the plurality of sub disc springs 2 are enclosed into a plurality of circles, the diameters of the circles are different, the plurality of circles of sub disc springs 2 are arranged layer by layer around the center of the spherical net structure, and the plurality of sub disc springs 22 of each circle are uniformly distributed around the center of the spherical net structure.

FIG. 4 shows an embodiment of the present invention (in this embodiment, a plurality of sub-disc springs 2 are enclosed into three circles, the first circle near the center of the spherical net structure is six sub-disc springs 2, the second circle and the third circle are twelve sub-disc springs 2, wherein the six sub-disc springs 2 of the first circle are all connected with the six sub-disc springs 2 of the second circle through a connecting plate 1, the six sub-disc springs 2 connected with the first circle are separated by the six sub-disc springs 2 not connected with the first circle, the twelve sub-disc springs 2 of the second circle are connected with each other through a connecting plate 1, the twelve sub-disc springs 2 of the third circle are connected with each other through a connecting plate 1, one sub-disc spring 2 of each second circle is connected with a corresponding disc spring of the third circle, and the connecting plate 1, connected with the sub-disc springs 2 of the second circle, viewed from the top view, The connecting sheets 1 connected with the second circle of disc springs 2 and the third circle of disc springs 2 point to the center of the spherical surface net structure), and the diagram contains a zero-stiffness area.

In some embodiments, the inner section of the small disc-shaped spring is provided with a through hole, and the generatrix of the inner section is a line segment; the middle section bus is a line segment; the outer section generatrix is a circular arc. At this time, the outer section is a spherical surface, the connecting piece is also a spherical surface, the inner radius of the outer section is equal to that of the connecting piece, and the outer radius of the outer section is equal to that of the connecting piece.

In some embodiments, the inner section may be devoid of through holes. The inner section bus can be an arc, the middle section bus can be an arc, and the outer section bus is an arc. The inner radius of the outer section is equal to the inner radius of the connecting piece, and the outer radius of the outer section is equal to the outer radius of the connecting piece.

That is, the inner diameter of the outer section is always the same as the inner diameter of the web and the outer diameter is always the same as the outer diameter of the web, since both are of equal thickness and are drawn from the same sheet of material.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A spherical reticulated disc spring, comprising:

2. The spherical reticulated disc spring of claim 1, wherein the inner and outer surfaces of the spherical reticulated structure are spherical and the inner and outer surfaces of the connecting web are spherical.

3. The spherical reticulated disc spring of claim 1 or claim 2, wherein the sub-disc springs comprise an inner section, a middle section, and an outer section, the inner section, the middle section, and the outer section are connected in sequence, and the outer section is connected to the connecting piece.

4. The spherical reticulated disc spring of claim 3, wherein the inner and middle sections are smoothly transitioned and the outer and middle sections are smoothly transitioned.

5. The spherical reticulated disc spring of claim 3, wherein the generatrices of the inner, middle and outer segments are arcs or line segments.

6. The spherical reticulated disc spring of claim 3, wherein the inner, middle and outer segments are of the same thickness.

7. The spherical reticulated disc spring of claim 1 wherein the plurality of sub-disc springs are of the same thickness.

8. The spherical reticulated disc spring of claim 7, wherein the thickness of the sub-disc springs is the same as the thickness of the connecting web.

9. The spherical reticulated disc spring of claim 1 wherein the plurality of sub-disc springs are the same size.

10. The spherical reticulated disk spring of claim 3, wherein the inner sections of the sub-disk springs are provided with through holes and the connecting pieces are provided with screw holes.