CN111853040B

CN111853040B - Butterfly spring pad

Info

Publication number: CN111853040B
Application number: CN202010642615.XA
Authority: CN
Inventors: 吴庆祝; 姜超
Original assignee: Wenzhou Tianli Spring Co ltd
Current assignee: Wenzhou Tianli Spring Co ltd
Priority date: 2020-07-06
Filing date: 2020-07-06
Publication date: 2024-03-08
Anticipated expiration: 2040-07-06
Also published as: CN111853040A

Abstract

The invention relates to the field of spring pads, in particular to a butterfly spring pad which comprises a spring pad body, a limiting structure, a limiting sleeve, a sliding chute, a spring piece, a sliding block and a fixing structure. According to the invention, the limiting sleeve is arranged in the middle hole of the disc spring pad, so that the screw is positioned at the center of the disc spring pad when the screw is fixed through the disc spring pad, the disc spring pad can play the best elastic effect, meanwhile, the spring piece is arranged in the limiting sleeve, the screw can be always positioned at the center of the disc spring piece, the sliding groove is arranged at the inner side of the limiting sleeve, and the four sliding blocks arranged on the side wall of the circular hole at the top end of the spring pad body are matched, so that the spring pad and the limiting sleeve cannot rotate relatively, the relative displacement possibly generated between the limiting sleeve and the spring pad is further avoided, and the limiting sleeve can play a role of limiting a plurality of spring pads simultaneously under the condition of parallel connection or serial connection of a plurality of disc spring pads, and the connection tightness is ensured.

Description

Butterfly spring pad

Technical Field

The invention relates to the field of spring pads, in particular to a belleville spring pad.

Background

The disk spring is conical disk-shaped, can be used singly or in series or in parallel, bears static or dynamic load acting along the axial direction at the upper inner edge and the lower outer edge, is compressed and deformed until being flattened, and stores energy as a live load. The automatic conversion to additional compressive load required for sealing is necessary to reduce the continuous need for tightening in gasket, packing use. The belleville spring is a special spring which is tapered in the axial direction and bears load, a certain potential energy is stored after the belleville spring bears load deformation, and when the bolt is loosened, the belleville spring releases partial potential energy to keep the pressure between flange connections to meet the sealing requirement. The stress distribution of the belleville springs is uniformly reduced from inside to outside, and the effect of low stroke and high compensation force can be realized.

However, in actual use, due to the different diameters of the middle cavities of the screw and the disc spring pieces, the disc spring pieces can deviate when the screw is screwed up, and especially when a plurality of disc spring pieces are used in parallel or in series, the connection strength can be influenced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a belleville spring cushion.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a belleville spring pad, includes the spring pad body, the middle part of spring pad body is equipped with limit structure, limit structure includes stop collar, spout, spring leaf and slider, the stop collar is cylindrical tubular structure, just four have been seted up to the side of stop collar equidistance in proper order the spout, the diameter of stop collar equals spring pad body inner circle diameter, just the stop collar with spring pad body sliding connection, the inner circle side of spring pad body is equipped with four the slider, four the slider corresponds four the spout sets up, and four the slider passes through four spout with sliding connection between the spring pad body, the inboard of stop collar is equipped with screw thread structure, the spring leaf is equipped with four, four the spring leaf is equidistant in proper order to be located the medial surface of stop collar, the spring leaf is triangle-shaped structure, be equipped with fixed knot on the spring pad body.

Preferably, in order to enable the bolts to be fastened through the embedded plates between the screw rods and the connecting pieces, the connecting strength is increased, the limiting structure further comprises the embedded plates, the embedded plates are fixedly connected to the bottom side of the limiting sleeve, and the cross sections of the embedded plates are triangular.

Preferably, in order to prevent the disc spring pads from sliding when the screw rotates when the disc spring pads are used in parallel or in series, the fixing structure comprises a plurality of protruding blocks, and the protruding blocks are annularly and equidistantly arranged on the top side of the spring pad body.

Preferably, in order to make a plurality of belleville spring pads use in involution combination mode, the spring pad tip can intermesh, increases the stability of connection, fixed knot constructs still includes first draw-in groove, first draw-in groove is equipped with a plurality ofly, a plurality of first draw-in groove in spring pad body top side is the alternation with a plurality of the lug sets up.

Preferably, when the plurality of belleville spring cushions are used in a superposition mode, the end parts of the spring cushions can be meshed with the bottom side of the other spring cushion, so that the connection stability is improved, the fixing structure further comprises a plurality of second clamping grooves, and the second clamping grooves are arranged at equal intervals in an annular shape on the bottom side of the spring cushion body.

Preferably, in order to further prevent the plurality of belleville spring mats from rotating between the spring mats when being used in a superposition mode, the fixing structure further comprises a plurality of anti-slip strips, and the plurality of anti-slip strips are arranged on the top side of the spring mat body in radial equidistant mode.

Preferably, in order to further prevent the plurality of belleville spring pads from being used in a involutory mode, the bottom sides of the two spring pads are clamped, so that rotation can not occur between the two spring pads, the fixing structure further comprises correction blocks, the correction blocks are provided with a plurality of correction blocks, and the correction blocks are annularly arranged on the edge portions of the bottom sides of the spring pad bodies.

The beneficial effects of the invention are as follows:

(1) The invention provides a belleville spring cushion, which is characterized in that a limiting sleeve is arranged in a hole in the middle of the belleville spring cushion, so that a screw is positioned in the center of the belleville spring cushion when a connecting piece is fixed by the screw through the belleville spring cushion, the belleville spring cushion can be effectively ensured to exert the best elastic effect, and the connection stability is ensured.

(2) The invention provides a belleville spring cushion, a spring piece is arranged in a limit sleeve, the limit sleeve can enable a screw to be always positioned at the middle part of the belleville spring piece aiming at screws with different diameters, a sliding groove is arranged at the inner side of the limit sleeve, and the four sliding blocks are matched with the side wall of a round hole at the top end of a spring cushion body, so that when the belleville spring cushion and the limit sleeve are installed, the spring cushion and the limit sleeve cannot rotate relatively, the relative displacement possibly generated between the limit sleeve and the spring cushion is further avoided, and for the situation that a plurality of belleville spring cushions are used in parallel or in series, the limit sleeve can also have the function of limiting a plurality of spring cushions simultaneously, and the connecting tightness is effectively ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic diagram of a connection structure between the limiting structure and the fixing structure shown in FIG. 1;

FIG. 3 is an enlarged schematic view of portion A shown in FIG. 2;

fig. 4 is a schematic diagram of a connection structure between the spring pad body and the limiting structure shown in fig. 1.

In the figure: 1. the spring pad comprises a spring pad body, 2, a limiting structure, 21, a limiting sleeve, 22, an insert, 23, a chute, 24, a spring piece, 25, a sliding block, 3, a fixing structure, 31, a bump, 32, a first clamping groove, 33, an anti-slip strip, 34, a correction block, 35 and a second clamping groove.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-4, a belleville spring pad includes a spring pad body 1, a limit structure 2 is provided in the middle of the spring pad body 1, the limit structure 2 includes a limit sleeve 21, a chute 23, a spring piece 24 and a slider 25, the limit sleeve 21 is in a cylindrical structure, four chutes 23 are sequentially and equidistantly provided on the side surface of the limit sleeve 21, the diameter of the limit sleeve 21 is equal to the diameter of the inner ring of the spring pad body 1, the limit sleeve 21 is slidably connected with the spring pad body 1, four sliders 25 are provided on the side surface of the inner ring of the spring pad body 1, four sliders 25 are provided corresponding to the four chutes 23, and four sliders 25 are slidably connected with the spring pad body 1 through the four chutes 23, a thread structure is provided on the inner side of the limit sleeve 21, four spring pieces 24 are sequentially and equidistantly provided on the inner side surface of the limit sleeve 21, the spring piece 24 is in a triangular structure, and a fixing structure 3 is provided on the spring pad body 1.

As a technical optimization scheme of the invention, the limit structure 2 further comprises an insert 22, the insert 22 is fixedly connected to the bottom side of the limit sleeve 21, the cross section of the insert 22 is in a triangular structure, and when in use, the insert 22 is embedded between the screw and the connecting piece for fastening the bolt, so that the connection strength is increased.

As a technical optimization scheme of the present invention, the fixing structure 3 includes a plurality of protruding blocks 31, and the protruding blocks 31 are arranged on the top side of the spring pad body 1 in an annular equidistant arrangement, so that when a plurality of belleville spring pads are used in parallel or in series, the belleville spring pads can be prevented from sliding relative to each other when the screw rotates.

As a technical optimization scheme of the present invention, the fixing structure 3 further includes a plurality of first clamping grooves 32, where the plurality of first clamping grooves 32 are disposed on the top side of the spring pad body 1 and the plurality of protruding blocks 31 are alternately disposed, so that ends of the spring pads can be engaged with each other when the plurality of belleville spring pads are used in a combination manner, and stability of connection is increased.

As a technical optimization scheme of the present invention, the fixing structure 3 further includes a plurality of second clamping grooves 35, where a plurality of second clamping grooves 35 are provided, and the plurality of second clamping grooves 35 are disposed at equal intervals in a ring shape on the bottom side of the spring pad body 1, so that when a plurality of belleville spring pads are used in a superposition manner, the end portions of the spring pads can be meshed with the bottom side of another spring pad, and connection stability is increased.

As a technical optimization scheme of the present invention, the fixing structure 3 further includes a plurality of anti-slip strips 33, where the plurality of anti-slip strips 33 are radially and equidistantly disposed on the top side of the spring mattress body 1, so as to further prevent the plurality of belleville spring mattresses from rotating between the spring mattresses when they are stacked for use.

As a technical optimization scheme of the present invention, the fixing structure 3 further includes a plurality of correction blocks 34, where the correction blocks 34 are disposed in a plurality of annular shapes and are disposed at an edge portion of the bottom side of the spring mattress body 1, so that the bottom sides of the two spring mattresses are engaged with each other to prevent rotation between the two spring mattresses when the plurality of belleville spring mattresses are used in a involution manner.

When the invention is used, firstly, a user selects the using mode of the belleville spring cushion according to the using requirement, the limit sleeve 21 is penetrated into one side by the screw rod through the empty slot arranged in the middle of the spring cushion body 1, so that four sliding blocks 25 arranged in the inner ring of the spring cushion body 1 slide by four sliding grooves 23 arranged on the side surface of the limit sleeve 21, four spring pieces 24 are arranged on the inner side of the top end part of the limit sleeve 21, the screw rod for fixing is inserted from the end part of the limit sleeve 21, the screw rod can be fixed at the middle part of the spring cushion body 1 due to the action of the spring pieces 24, the screw rod end part is aligned with the screw hole to rotate, the screw rod is gradually screwed into the screw hole, the spring cushion body 1 and the screw rod are simultaneously rotated due to the relative fixation between the limit sleeve 21 and the screw rod, and when the embedded piece 22 at the bottom end of the limit sleeve 21 reaches the screw hole, the screw rod is continuously screwed in, the insert 22 is finally screwed between the screw and the screw hole, so that the fixing effect of the screw is better, loosening of the screw is prevented, on the other hand, when the screw is completely screwed into the screw hole, the spring pad body 1 is in a flattened state, elastic force is applied to the nut part of the screw, and the connection strength is increased, because the position of the spring pad body 1 is positioned at the center part of the screw hole due to the effect of the limiting sleeve 21, the exerted effect is optimal, if a plurality of disc spring pads are required to be used in parallel or in series, a plurality of spring pads are required to be connected in a involution or superposition mode for obtaining larger elastic force, the bump 31 and the first clamping groove 32 and the second clamping groove 35 arranged on the spring pad body 1 can avoid relative rotation of the spring pads in the screw tightening process, so that the connection between the spring pads is tighter, and further better elastic effect is exerted, meanwhile, a plurality of spring pads can be sleeved on the limiting sleeve 21 at the same time, so that the plurality of spring pads can be accurately positioned when being used at the same time.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the foregoing examples, and that the foregoing description and description are merely illustrative of the principles of this invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The belleville spring cushion comprises a spring cushion body (1), and is characterized in that: the spring mattress is characterized in that a limiting structure (2) is arranged in the middle of the spring mattress body (1), the limiting structure (2) comprises a limiting sleeve (21), sliding grooves (23), spring pieces (24) and sliding blocks (25), the limiting sleeve (21) is of a cylindrical barrel-shaped structure, four sliding grooves (23) are sequentially formed in the side face of the limiting sleeve (21) at equal intervals, the diameter of the limiting sleeve (21) is equal to the diameter of an inner ring of the spring mattress body (1), the limiting sleeve (21) is in sliding connection with the spring mattress body (1), four sliding blocks (25) are arranged on the side face of the inner ring of the spring mattress body (1), the four sliding blocks (25) are arranged corresponding to the four sliding grooves (23), the four sliding blocks (25) are in sliding connection with the spring mattress body (1), the inner side of the limiting sleeve (21) is provided with a threaded structure, the four spring pieces (24) are sequentially arranged on the inner side face of the limiting sleeve (21), and the spring pieces (24) are of a triangular structure, and the spring pieces (3) are fixedly arranged on the spring mattress body (1) at equal intervals;

the fixing structure (3) comprises a plurality of protruding blocks (31), wherein the protruding blocks (31) are arranged in a plurality, and the protruding blocks (31) are annularly and equidistantly arranged on the top side of the spring pad body (1);

the fixing structure (3) further comprises a plurality of first clamping grooves (32), wherein the plurality of first clamping grooves (32) are formed in the top side of the spring pad body (1) and are alternately arranged with the plurality of protruding blocks (31);

the fixing structure (3) further comprises a plurality of second clamping grooves (35), wherein the second clamping grooves (35) are formed in the bottom side of the spring pad body (1) in an annular equidistant mode.

2. A belleville spring cushion according to claim 1, wherein: the limiting structure (2) further comprises an embedded piece (22), the embedded piece (22) is fixedly connected to the bottom side of the limiting sleeve (21), and the cross section of the embedded piece (22) is of a triangular structure.

3. A belleville spring cushion according to claim 1, wherein: the fixing structure (3) further comprises a plurality of anti-slip strips (33), wherein the plurality of anti-slip strips (33) are arranged at the top side of the spring pad body (1) in radial equidistant arrangement; the fixing structure (3) further comprises correction blocks (34), wherein a plurality of correction blocks (34) are arranged, and the correction blocks (34) are annularly arranged at the edge part of the bottom side of the spring pad body (1).