CN108253064B

CN108253064B - Metal rubber shock absorber supported by corrugated pipe and forming method thereof

Info

Publication number: CN108253064B
Application number: CN201810244306.XA
Authority: CN
Inventors: 邵一川; 白鸿柏; 薛新; 吴乙万; 任志英; 周建文
Original assignee: Fuzhou University
Current assignee: Fuzhou University
Priority date: 2018-03-23
Filing date: 2018-03-23
Publication date: 2023-09-01
Anticipated expiration: 2038-03-23
Also published as: CN108253064A

Abstract

The invention relates to a metal rubber shock absorber supported by a corrugated pipe and a forming method thereof, comprising the corrugated pipe with fixing flanges arranged at two ends respectively, wherein corrugated metal rubber with the same corrugated size as that of the corrugated pipe is sleeved outside the corrugated pipe, a corrugated metal pipe sleeve is arranged outside the metal rubber, and a plurality of hoops are arranged outside the corrugated metal pipe sleeve at intervals along the length direction of the corrugated metal pipe sleeve. The structure is compact, and the defects that the vibration damper cannot be used for a long time under severe working environments such as high temperature, low temperature, corrosive atmosphere, irradiation and the like and the vibration damping effect is not ideal are overcome; the molding method is simple and convenient.

Description

Metal rubber shock absorber supported by corrugated pipe and forming method thereof

Technical Field

The invention relates to a metal rubber shock absorber supported by a corrugated pipe and a forming method thereof.

Background

The metal rubber shock absorber has the advantages of good high and low temperature resistance, corrosion resistance, radiation resistance and the like, and has great engineering application value. The method is widely applied to the fields of advanced military technologies such as aerospace, nuclear submarines and the like. The common shock absorber cannot be used for a long time in severe working environments such as high temperature and high pressure, corrosive atmosphere, irradiation and the like, common materials are easy to embrittle and harden in the severe environments, even dangerous situations of sudden drop of material performance and even failure occur, the shock absorbing effect cannot be achieved, and life safety of working equipment and personnel can be influenced. On the other hand, the existing corrugated pipe shock absorber has various design forms, can meet the requirement under the condition of low vibration reduction requirement, but can cause the defect of vibration reduction performance under the condition of higher vibration reduction requirement.

The existing corrugated pipe shock absorber is mainly arranged between two pipelines, and has the functions of connection and shock absorption and buffering on the one hand. The technical proposal adopted is that a metal rubber block matched with the corrugated hole is padded in the corrugated hole of the corrugated pipe, and then the corrugated pipe is locked by a clamp. The disadvantage of such design is that when the damper is impacted by axial load, the damping effect can be achieved, but the technical scheme can only realize damping during compression, and when the corrugated pipe damper is axially stretched, the damping effect cannot be achieved. And because the metal rubber is inlaid in the corrugated pipe one by one, the whole metal rubber is not an integral body, and when the metal rubber is impacted by axial load, the phenomenon of uneven stress is easy to occur, so that the vibration reduction effect is not ideal, and the vibration reduction performance requirement is often not met.

Disclosure of Invention

The invention aims to provide a metal rubber shock absorber supported by a corrugated pipe and a forming method thereof, which have compact structures and overcome the defects that the shock absorber cannot be used for a long time under severe working environments such as high temperature, low temperature, corrosive atmosphere, irradiation and the like and has an unsatisfactory shock absorption effect.

The technical scheme of the invention is as follows: the utility model provides a metal rubber shock absorber that bellows supported, includes the bellows that both ends are provided with flange respectively, the bellows overcoat has put the bellows-type metal rubber that ripple size is the same with the bellows ripple size, install the bellows-type metal pipe box outward of metal rubber, a plurality of clamps are installed along its length direction interval outward of bellows-type metal pipe box.

Further, the corrugated depth of the corrugated metal rubber is equal to the corrugated width.

Further, the outside of the corrugated metal pipe sleeve is provided with clamps at two ends and clamps at the middle part along the length direction of the corrugated metal pipe sleeve, and the clamps are fixed outside the corrugated metal pipe sleeve through fastening bolts.

Further, the fixed flanges at the two ends of the corrugated pipe are fixedly connected with the pipeline with the flange plates at the ends through the fixed bolts respectively.

A molding method of a metal rubber shock absorber applied to corrugated pipe support comprises the following steps:

1) According to the actual condition of engineering, designing a corrugated metal pipe sleeve matched with the corrugated pipe;

2) Preparing a metal rubber flat plate, and then rolling the metal rubber flat plate for a plurality of times to form corrugated metal rubber, wherein the corrugated size of the corrugated metal rubber is the same as that of the corrugated pipe, and the depth H and the width D of the corrugated metal rubber are the same;

3) Winding the corrugated tubular metal rubber after multiple rolling outside the corrugated pipes by a special tool, and pressing the corrugations of the corrugated tubular metal rubber into the corrugations among the corrugated pipes;

4) After the corrugated tubular metal rubber is installed, installing a corrugated metal pipe sleeve on the outer layer of the corrugated tubular metal rubber;

5) And finally, installing three clamps on the outer surface of the corrugated metal pipe sleeve and fixing the three clamps by fastening bolts.

Compared with the prior art, the invention has the following advantages:

1. the corrugated pipe supported metal rubber shock absorber has a compact structure, and overcomes the defects that the shock absorber cannot be used for a long time under severe working environments such as high temperature, low temperature, corrosive atmosphere, irradiation and the like and the shock absorbing effect is not ideal; and the large damping characteristic is not changed with temperature, and the service life in harsh environment is long and the stability is high.

2. The damping and buffering device is suitable for damping and buffering in various high-temperature, low-temperature, corrosive and radiation environments, has rubber-like high elasticity and high damping characteristics and excellent physical and mechanical properties of metal, and can be used for damping and buffering pipelines of rocket engines, instruments in instrument cabins, equipment in inertial navigation systems and solar panels of spacecrafts.

3. In practical engineering application, the vibration reduction and buffering effects in compression and extension in the axial direction can be realized, a certain vibration reduction and buffering effect can be realized on radial impact load, and a certain protection effect is realized on the whole vibration reduction system. Most importantly, when the pipeline is subjected to torsional deformation caused by vibration impact, the corrugated pipe sleeve can absorb torsional inertia transmitted by the pipeline and can twist along with the torsion of the pipeline, so that vibration energy can be dissipated, the vibration reduction effect is achieved, the pipeline cannot be cracked, and a certain protection effect is achieved on the whole cabin.

Drawings

FIG. 1 is a schematic diagram of a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a second embodiment of the present invention;

FIG. 3 is a schematic view of bellows dimensions and metal rubber dimensions of the present invention;

in the figure: 1-flange plate, 2-corrugated metal pipe sleeve, 3-clamp, 4-fastening bolt, 5-corrugated metal rubber, 6-corrugated pipe, 61-fixing flange, 62-fixing bolt, 7-metal rubber, 8-metal rubber A face, 9-metal rubber B face and 10-pipeline.

Detailed Description

In order to make the above features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below, but the present invention is not limited thereto.

Referring to fig. 1 to 3

The utility model provides a metal rubber shock absorber that bellows supported, includes that both ends are provided with the bellows 6 of mounting flange 61 respectively, the bellows overcoat has put the bellows metal rubber 5 that ripple size is the same with bellows ripple size, the ripple degree of depth H of bellows metal rubber equals with ripple width D, install the bellows metal pipe box 2 outward of metal rubber, a plurality of clamps 3 are installed along its length direction interval outward of bellows metal pipe box.

In this embodiment, the corrugated metal pipe sleeve is externally provided with clamps at two ends and a clamp at the middle part along the length direction thereof, and the clamps are fixed outside the corrugated metal pipe sleeve through fastening bolts 4.

In this embodiment, the fixing flanges at two ends of the bellows are respectively fixedly connected with the pipe 10 with the flange plate 1 at the end via fixing bolts 62.

2) In order to enable the metal rubber to be better embedded between adjacent corrugations of the corrugated pipe, a metal rubber flat plate is prepared, then the metal rubber flat plate is rolled for a plurality of times by using a special die to form corrugated pipe-shaped metal rubber, the corrugated pipe-shaped metal rubber has the corrugated wave with the same size as the corrugated pipe, and the depth H and the width D of the corrugated pipe-shaped metal rubber are the same;

5) Finally, three hoops are arranged outside the corrugated metal pipe sleeve and fixed by fastening bolts, so that the metal rubber is prevented from sliding out of the corrugations when being subjected to impact load, and the vibration reduction effect is prevented from being influenced.

Working principle: when the metal rubber corrugated pipe damper receives load acting force F1 from the axial direction, the corrugated pipe is extruded and deformed at first, when the acting force is gradually increased, the A face and the B face of the metal rubber are extruded and deformed, friction, sliding and extrusion phenomena occur among the spiral turns of the metal wire, a large amount of vibration energy is dissipated, and the damping and buffering effects are achieved. When the metal rubber corrugated pipe shock absorber receives load acting force F2 from the radial direction, the force acts on the corrugated metal pipe sleeve firstly and then is transmitted to the metal rubber, friction, sliding and extrusion phenomena occur after the metal wire spiral turns are subjected to dynamic load, and vibration energy is further dissipated. When a pipeline mounted on a submarine is attacked by various weapons such as torpedoes, the pipeline is usually subjected to torsional deformation, and if a conventional metal pipe sleeve is adopted, the pipeline can collapse after torsional deformation. When the corrugated metal pipe sleeve matched with the corrugated pipe in size is adopted, the corrugated metal pipe sleeve can be twisted along with the twisting of the pipeline, so that vibration energy can be dissipated, the pipeline is prevented from being broken and damaged, and the safety of the cabin body is protected. Because the whole metal rubber is a whole, uneven stress can not occur when the metal rubber is impacted by loads in all directions, and the vibration reduction effect is greatly improved.

The foregoing is only illustrative of the preferred embodiments of the present invention, and it will be apparent to those skilled in the art from this disclosure that, based upon the teachings herein, no inventive effort is required to devise various bellows-supported metal-rubber damper that, although variations, modifications, substitutions and alterations herein, are contemplated as falling within the spirit and scope of the invention.

Claims

1. A molding method of a metal rubber shock absorber supported by a corrugated pipe comprises the steps that the metal rubber shock absorber supported by the corrugated pipe comprises corrugated pipes, both ends of each corrugated pipe are respectively provided with a fixing flange, corrugated metal rubber with the same corrugated size as that of the corrugated pipe is sleeved outside the corrugated pipes, a corrugated metal pipe sleeve is arranged outside the metal rubber, and a plurality of clamps are arranged outside the corrugated metal pipe sleeve at intervals along the length direction of the corrugated metal pipe sleeve; the ripple depth and the ripple width of the ripple tubular metal rubber are equal; the corrugated metal pipe sleeve is provided with clamps at two ends and a clamp at the middle part along the length direction, and the clamps are fixed outside the corrugated metal pipe sleeve through fastening bolts; the fixed flanges at two ends of the corrugated pipe are fixedly connected with a pipeline with flange plates at the ends through fixed bolts respectively, and the method is characterized by comprising the following steps:

3) Then the corrugated pipe-shaped metal rubber after multiple rolling is wholly wound outside the corrugated pipes, and the corrugations of the corrugated pipe-shaped metal rubber are pressed into the corrugations among the corrugated pipes;