High-performance belleville spring

Abstract

The utility model discloses a high-performance belleville spring which comprises a conical disc-shaped base body and an annular limiting piece, a conical hole is concentrically formed in the conical disc-shaped base body, and the conical hole is provided with a large-diameter end located at the bottom of the conical disc-shaped base body and a small-diameter end located at the top of the conical disc-shaped base body. The annular limiting piece is concentrically arranged below the conical disc-shaped base body and covers the edge of the large-diameter end, a plurality of positioning grooves are formed in the edge of the bottom of the conical disc-shaped base body at intervals, and the annular limiting piece is provided with a positioning plate which is bent upwards and extends into the positioning grooves. According to the high-performance belleville spring, the contact area and friction force between the high-performance belleville spring and a flange or other pressed objects are increased through the annular limiting pieces, the anti-torsion performance of the conical disc-shaped base body is improved, loosening of bolts can be reduced, and damage to the surfaces of the flange or other pressed objects in the using process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to disc spring field especially relates to a high performance disc spring. BACKGROUND

[0002] Disc spring is a kind of spring that is conical in axial direction and bears load, can bear large load with small deformation, and is suitable for occasions requiring small axial space.

[0003] Disc spring is often used to maintain the pressure of flange connecting piece to meet the requirement of stable sealing. After bolt tightening, disc spring bears load deformation and stores certain potential energy, when bolt appears relaxation, disc spring releases part of potential energy to maintain the pressure of flange connecting piece, and meets the requirement of continuous sealing.

[0004] Ordinary disc spring adopts simple conical disc structure, so that the contact between disc spring and the surface of flange or other compressed objects is linear contact, the contact area is small, and disc spring is easy to twist in vibration process, accelerates bolt relaxation, and forms obvious indentation on the surface of flange or other compressed objects, which needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a high performance disc spring, improves the anti-twist performance of spring and reduces the damage to the surface of flange or other compressed objects.

[0006] To achieve the purpose, the utility model adopts the following technical scheme:

[0007] A high performance disc spring, comprising: conical disc base body and annular limiting sheet, the conical disc base body is provided with conical hole concentrically, the conical hole has large-diameter end at the bottom of conical disc base body and small-diameter end at the top of conical disc base body, the annular limiting sheet is arranged concentrically below the conical disc base body and covers the edge of large-diameter end, a plurality of positioning grooves are arranged at the edge of the bottom of conical disc base body, and the annular limiting sheet is provided with positioning plate bent upwards and extended into the positioning groove.

[0008] Wherein, the annular limiting sheet and positioning plate adopt integrated structure.

[0009] Wherein, the number of positioning grooves is at least 2.

[0010] Wherein, the positioning grooves are arranged in annular array at the edge of the bottom of conical disc base body.

[0011] Wherein, the inner diameter of annular limiting sheet is less than the diameter of large-diameter end of conical hole.

[0012] Wherein, the outer diameter of annular limiting sheet is greater than the outer diameter of the bottom of conical disc base body.

[0013] The high-performance disc spring has the advantages that the annular limiting sheet is specially designed, the positioning plate on the annular limiting sheet is matched with the edge positioning groove at the bottom of the conical disc-shaped base body, the positioning of the conical disc-shaped base body on the annular limiting sheet is realized, the contact area and the friction force with the flange or other compressed objects are increased through the annular limiting sheet, the anti-twisting performance of the conical disc-shaped base body is improved, the loosening of the bolt is reduced, the anti-vibration effect is good, and the damage to the surface of the flange or other compressed objects in the use process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic view of the utility model;

[0015] Figure 2 is an A-A sectional view of Figure 1 ;

[0016] Figure 3 is a structural schematic view of the annular limiting sheet in Figure 1 . DETAILED DESCRIPTION

[0017] The technical scheme of the utility model will be further illustrated below in combination with Figures 1 to 2 and through specific embodiments.

[0018] As shown in the high-performance disc spring shown in Figure 1 and Figure 2 , comprising: a conical disc-shaped base body 1 and an annular limiting sheet 2, the conical disc-shaped base body 1 is concentrically provided with a conical hole 12, the conical hole 12 has a large-diameter end 122 at the bottom of the conical disc-shaped base body 1 and a small-diameter end 121 at the top of the conical disc-shaped base body 1, after the bolt is tightened, the conical disc-shaped base body 1 is deformed under load, the distance between the large-diameter end 122 and the small-diameter end 121 is shortened, and potential energy is stored.

[0019] The annular limiting sheet 2 is concentrically arranged below the conical disc-shaped base body 1 and covers the edge of the large-diameter end 122, avoiding the direct and linear contact between the bottom of the conical disc-shaped base body 1 and the compressed object during use.

[0020] In the embodiment, the inner diameter of the annular limiting sheet 2 is smaller than the diameter of the large-diameter end 122 of the conical hole, the outer diameter of the annular limiting sheet 2 is greater than the outer diameter of the bottom of the conical disc-shaped base body 1, the conical disc-shaped base body 1 indirectly contacts the compressed object through the annular limiting sheet 2, the contact area and the friction force are increased, the anti-twisting performance of the conical disc-shaped base body 1 is improved, the loosening of the bolt is reduced, and the anti-vibration effect is good.

[0021] In order to avoid the twist of the conical disc base 1 on the annular limiting sheet 2, a plurality of concave positioning grooves 11 are arranged at the bottom edge of the conical disc base 1, and the annular limiting sheet 2 is provided with positioning plates 21 which are bent upwards and extend into the positioning grooves 11, and the positioning of the conical disc base 1 on the annular limiting sheet 2 is realized through the cooperation of the positioning plates 21 and the positioning grooves 11.

[0022] In the embodiment, the annular limiting sheet 2 and the positioning plate 21 adopt an integrated structure and can be made by punching a copper sheet, so that the production efficiency is high. The hardness of the copper sheet is lower than that of the steel conical disc base 1, and the area of the annular limiting sheet 2 is large, so that when the annular limiting sheet 2 contacts the surface of the compressed object, the damage to the surface of the compressed object can be reduced.

[0023] In order to improve the structural stability, the number of the positioning grooves 11 is at least two, such as Figure 3 As shown in the figure, six positioning grooves 11 are adopted, and in the embodiment, the six positioning grooves 11 are arranged in an annular array at the bottom edge of the conical disc base 1, the six positioning plates 21 are arranged in an annular array on the annular limiting sheet 2, the six positioning grooves 11 correspond to the six positioning plates 21 one by one, which can not only avoid the relative twist of the conical disc base 1 on the annular limiting sheet 2, but also improve the concentricity of the conical disc base 1 and the annular limiting sheet 2, so that the assembly is convenient and the reliability in use is high.

[0024] The above is only the preferred embodiment of the present application, and for the ordinary skilled in the art, according to the idea of the present application, the specific implementation manner and application range can be changed, and the content of the specification should not be understood as the limitation of the present application.

Claims

1. A high-performance disc spring, characterized in that, include: A conical disc-shaped base and an annular limiting plate are provided. The conical disc-shaped base has a concentric conical hole with a large-diameter end at the bottom and a small-diameter end at the top. The annular limiting plate is concentrically positioned below the conical disc-shaped base and covers the edge of the large-diameter end. The bottom edge of the conical disc-shaped base has several positioning grooves spaced apart. The annular limiting plate has a positioning plate that bends upward and extends into the positioning groove.

2. The high-performance disc spring according to claim 1, characterized in that, The annular limiting piece and the positioning plate adopt an integrated structure.

3. The high-performance disc spring according to claim 1, characterized in that, The number of positioning slots is at least two.

4. The high-performance disc spring according to claim 1, characterized in that, The positioning grooves are arranged in a ring array on the bottom edge of the conical disk-shaped substrate.

5. The high-performance disc spring according to claim 1, characterized in that, The inner diameter of the annular limiting piece is smaller than the diameter of the large-diameter end of the conical hole.

6. The high-performance disc spring according to claim 1, characterized in that, The outer diameter of the annular limiting piece is larger than the outer diameter of the bottom of the conical disc-shaped base.

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