CN111188859A

CN111188859A - Novel disc spring combination method

Info

Publication number: CN111188859A
Application number: CN202010083383.9A
Authority: CN
Inventors: 周颖; 陆德成; 陈鹏; 刘浩
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2020-02-09
Filing date: 2020-02-09
Publication date: 2020-05-22

Abstract

The invention relates to a novel method for combining disc springs, which mainly realizes different combinations of the disc springs by arranging proper loading rings and belongs to the field of vibration control. The disk spring is a special spring which is conical in the axial direction and bears load, and the existing combination method comprises combination methods of involution, superposition and mixing, and combination methods of different thicknesses, different numbers of pieces and the like. The disc spring has a wide nonlinear stiffness characteristic and has a good utilization prospect in the field of vibration control, but the disc spring combined by the traditional combination method has a small deformation amount and an overlarge friction resistance, so that the characteristic that the disc spring is deformed in a nonlinear elastic mode is difficult to utilize. The invention adopts the loading ring to realize different combinations of the disc springs, can greatly reduce the influence of frictional resistance, fully utilizes the variable stiffness characteristic of the disc springs, and can play a role in the field of vibration control.

Description

Novel disc spring combination method

Technical Field

The invention relates to a novel disk spring combination method, and belongs to the field of vibration control.

Background

A disc spring is a special spring that is tapered in the axial direction and is loaded. The disk spring has high rigidity, strong buffering and vibration absorbing capacity, variable rigidity and wide nonlinear characteristic. The disc spring can bear large load with small deformation, the required space is small, the combination and the use are convenient, the maintenance and the replacement are easy, and the service life is long. Based on the advantages, the disc spring is gradually applied to the fields of vibration isolation and vibration control of buildings and large-scale equipment at present. The existing disk spring combination method comprises combination methods of involution, superposition and mixing, and combination methods of different thicknesses, different numbers of sheets and the like.

However, the conventional disc spring combination method has the following disadvantages: firstly, the deformation of the disc spring is small, the existing combination method only allows the disc spring to deform to a flattening part at most, and the wide-range nonlinear characteristic of the flattened disc spring is not fully utilized; secondly, in the existing application, the disc spring has more combined pieces, large load and overlarge friction resistance influence. A great deal of experience and experiments show that due to the existence of excessive friction force, the device formed by combining the existing disc springs loses the nonlinear characteristics of the disc springs, shows the mechanical characteristics controlled by the friction force and is not beneficial to realizing excellent vibration isolation effect.

Disclosure of Invention

The invention aims to provide a novel disc spring combination method aiming at the defects of the existing disc spring combination method.

Technical scheme

A novel disk spring combination method comprises a disk spring and is applied to vibration control, and is characterized in that: the disc spring is characterized by further comprising loading rings, different combinations of the disc springs are achieved through the loading rings, the disc springs are not in direct contact when combined with one another, the loading rings are arranged among the disc springs, the friction resistance influence is greatly reduced, and the variable stiffness characteristic of the disc springs is fully utilized.

In particular, the method of manufacturing a semiconductor device,

in the case of the mating combination, the inner position loading ring 21 is arranged at the mating inner disk spring loading portion 11, and the outer position loading ring 23 is arranged at the mating outer disk spring loading portion 12.

When the inner loading ring, the middle loading ring and the outer loading ring are overlapped and combined, the inner loading ring, the middle loading ring and the outer loading ring are arranged among the overlapped disc springs.

The invention has the beneficial effects that:

(1) the disc spring combined by the method can be deformed to be flattened or even completely turned over, the wide-range nonlinear characteristic of the disc spring can be fully utilized, and the deformation capacity of the system is improved;

(2) the invention reduces the frictional resistance of the combined disc springs, can obtain good combination effect under the conditions of large combination quantity and large load, and improves the hysteresis vibration isolation capability of the system;

(3) the used materials have low cost, simple structure, convenient assembly and convenient replacement;

(4) the vibration isolation device can be widely applied to the field of vibration control adopting the vibration isolation technology.

Drawings

FIG. 1 is a schematic and sectional view of a disc spring;

FIG. 2 is a schematic diagram of involution combination in example 1 of the present invention;

FIG. 3 is a sectional view of involution combination in example 1 of the present invention;

FIG. 4 is a schematic diagram of the effect of the involution and series connection of the traditional and the novel disc springs; (a) the traditional mode (b) and the mode (c) of the invention are comparatively and schematically used;

FIG. 5 is a schematic view of a lamination assembly in accordance with embodiment 2 of the present invention;

FIG. 6 is a cross-sectional view of a stacked assembly according to embodiment 2 of the present invention;

FIG. 7 is a schematic diagram of the effects of the traditional and novel disk springs in parallel; (a) the traditional mode (b) and the mode (c) of the invention are comparatively and schematically used;

reference numbers in the figures:

disc spring 1: a disc spring upper loading portion 11, a disc spring lower loading portion 12;

and (3) loading the ring 2: an inner position loading ring 21, an intermediate position loading ring 22, and an outer position loading ring 23.

Detailed Description

The technical scheme of the invention is further explained by combining the attached drawings.

It is known in the art that belleville springs are axially tapered and subject to negative loadsThe existing combination methods of the special spring include combination methods of involution, superposition and mixing, and combination methods of different thicknesses, different numbers of pieces and the like. The disc spring has a wide nonlinear stiffness characteristic and has a good utilization prospect in the field of vibration control, but the disc spring combined by the traditional combination method has a small deformation amount and an overlarge friction resistance, so that the characteristic that the disc spring is deformed in a nonlinear elastic mode is difficult to utilize. The invention adoptsLoading ringDifferent combinations of the disc springs are realized, the influence of frictional resistance can be greatly reduced, the variable stiffness characteristic of the disc springs is fully utilized, and the disc springs play a role in the field of vibration control.

As shown in FIG. 1, the process of the present invention uses a disc spring 1, which is itself prior art. The upper disc spring loading portion 11 and the lower disc spring loading portion 12 can be respectively arranged according to different contact positions with the loading ring 2.

The loading ring 2 of the present invention includes an inner position loading ring 21, an intermediate position loading ring 22, and an outer position loading ring 23, depending on the position of the region where the disc spring 1 is placed.

The cross-sectional shape of the loading ring 2 is not limited, and may be a diamond shape, a rectangular shape, a circular shape, or the like, and the essence of the idea of the present invention is sufficient.

The material of the loading ring 2 should be a sufficiently strong material, such as steel.

The following examples are given to further illustrate the technical solution of the present invention. Are merely exemplary of the invention, and the practice of the invention is not limited thereto.

Example 1

As shown in fig. 2 to 4, in the mating combination, the inner position loading ring 21 is disposed at the mating inner disk spring loading portion 11, and the outer position loading ring 23 is disposed at the mating outer disk spring loading portion 12.

In the invention, the basic principle of the novel involution series connection use mode is as follows: in a traditional series connection mode, the disc springs are directly turned and overlapped for carrying; the novel series connection mode adopts a loading ring 2 mode to carry, and the bearing capacity between the disc springs is transmitted through the loading ring. Two involutive series connection modesThe pair of disc spring system deformability is shown in fig. 6. Gravity bearing deformability of traditional series system_s≤1.5h₀Ultimate deformability d_u≤2.0h₀(ii) a Novel series system gravity bearing deformability d_s≤2.0h₀Ultimate deformability d_u≤4.0h₀. Therefore, the maximum improvement of the system deformation capacity is about 1 time by adopting a novel disc spring series connection mode.

Example 2

As shown in fig. 5 to 7, in the stacked combination, the inner position loading ring 21, the intermediate position loading ring 22, and the outer position loading ring 23 are disposed between the stacked disc springs 1, wherein the inner position loading ring 21 is located at the inner disc spring loading portion 11, the outer position loading ring 23 is located at the outer disc spring loading portion 12, and the positions and the number of the intermediate position loading rings 22 vary with the size, the load, and the like of the disc springs, and may not be disposed if necessary. The number of the middle loading rings is not limited and can be flexibly determined according to actual conditions.

In the invention, the basic principle of the novel overlapped parallel use mode is as follows: the traditional parallel connection mode directly overlaps the disc springs for bearing, while the novel parallel connection mode adopts a loading ring 2 mode for bearing, and the loading ring replaces the contact between the surfaces of the disc springs to transfer the bearing force. The hysteresis rule pairs of the two stacked parallel disc spring systems are shown in fig. 7. For two groups of disc spring groups in different parallel connection modes, the disc spring groups are considered to be subjected to static gravity load P₀When excited by external vibration, the upper load is at P₁And P₂The novel parallel connection mode of the invention has the advantages that the friction of the contact surface of the system is reduced, the disc spring can normally play a rebound effect, the system can vibrate back and forth between the point ② and the point ⑤, the dynamic stiffness is smaller, the friction damping energy consumption is reasonable, and the vibration isolation is facilitated.

The above examples are not exhaustive and are merely illustrative. Similarly, by adopting the method idea of the present invention, the mixing of the above embodiments can be realized, and all the existing disc spring combination methods can be combined, and a better combination effect can be obtained.

Claims

1. A novel disk spring combination method comprises a disk spring and is applied to vibration control, and is characterized in that: the device also comprises a loading ring which is provided with a loading ring,

different combinations of the disc springs are realized by adopting the loading rings, the disc springs are not directly contacted when combined with each other, but the loading rings are arranged among the disc springs, so that the influence of friction resistance is greatly reduced, and the variable stiffness characteristic of the disc springs is fully utilized.