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

Abstract

The invention relates to a metal rubber shock absorber supported by a bellows and a forming method thereof. Metal rubber, corrugated metal pipe sleeves are installed on the outside of the metal rubber, and several clamps are installed at intervals along the length direction of the corrugated metal pipe sleeves. The structure is compact, which overcomes the defect that the shock absorber cannot be used for a long time in harsh working environments such as high temperature, low temperature, corrosive atmosphere, and radiation, and the vibration damping effect is not ideal; the forming method is simple.

Description

Metal rubber shock absorber supported by bellows and forming method thereof

technical field

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

Background technique

Metal rubber shock absorbers have the advantages of good high and low temperature resistance, corrosion resistance, and radiation resistance, and have great engineering application value. At present, it is widely used in the fields of cutting-edge military technology such as aerospace and nuclear submarines. Ordinary shock absorbers cannot be used for a long time in harsh and harsh working environments such as high temperature and high pressure, corrosive atmosphere, and radiation. In harsh environments, ordinary materials are prone to embrittlement, hardening, and even dangerous situations of sudden drop in material performance or even failure. Not only the vibration reduction effect cannot be achieved, but also the life safety of working equipment and personnel will be affected. On the other hand, the existing bellows shock absorbers are designed in various forms, which can meet the requirements when the requirements for vibration reduction are not high, but will lead to insufficient vibration reduction performance when the requirements for vibration reduction are relatively high.

The existing bellows shock absorber is mainly installed between two pipes, on the one hand, it plays the role of connection, and on the other hand, it plays the role of damping and buffering. The technical solution usually adopted is to insert a metal rubber block matching its size in the corrugated hole of the corrugated pipe, and then lock it with a clamp outside. The defect of this design is that when the shock absorber is impacted by the axial load, the effect of vibration reduction can be achieved, but this technical solution can only achieve vibration reduction during compression, when the bellows shock absorber is axially pulled When it is stretched, it cannot play the effect of damping vibration. Moreover, since the metal rubber is inlaid in the bellows piece by piece, the whole metal rubber is not a whole, and when subjected to an axial load impact, it is prone to uneven force, so the vibration reduction effect is not very ideal, often The vibration damping performance requirements cannot be met.

Contents of the invention

The object of the present invention is to provide a metal rubber shock absorber supported by a bellows and its forming method, which has a compact structure and overcomes the fact that the shock absorber cannot be used for a long time in harsh working environments such as high temperature, low temperature, corrosive atmosphere, and radiation. And the defect that damping effect is unsatisfactory.

The technical solution of the present invention lies in: a metal rubber shock absorber supported by a bellows, which includes a bellows with fixed flanges at both ends, and a bellows with the same corrugation size as the bellows is placed outside the bellows. Metal rubber, corrugated metal pipe sleeves are installed on the outside of the metal rubber, and several clamps are installed at intervals along the length direction of the corrugated metal pipe sleeves.

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

Further, the corrugated metal sleeve is equipped with hoops located at both ends and a hoop located in the middle along its length direction, and the hoops are fixed on the outside of the corrugated metal sleeve through fastening bolts.

Further, the fixing flanges at both ends of the bellows are respectively fixedly connected to the pipes provided with flanges at the ends via fixing bolts.

A method for forming a metal rubber shock absorber supported by a bellows, comprising the following steps:

1) According to the actual situation of the project, the corrugated metal sleeve matching with the bellows is designed;

2) Prepare a metal rubber plate, and then roll the metal rubber plate several times to form a bellows-shaped metal rubber. The corrugations of the bellows-shaped metal rubber are the same as the corrugations of the bellows. The depth H and width D are the same;

3) The bellows-shaped metal rubber that has been rolled many times is wound outside the bellows with a special tool, and the corrugations of the bellows-shaped metal rubber are pressed into the corrugations between the bellows;

4) After the bellows metal rubber is installed, install the corrugated metal sleeve on the outer layer of the metal rubber of the bellows pile;

5) Finally, install three hoops outside the corrugated metal sleeve and fix them with fastening bolts.

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

1. The metal rubber shock absorber supported by the bellows has a compact structure, which overcomes the defect that the shock absorber cannot be used for a long time in harsh working environments such as high temperature, low temperature, corrosive atmosphere, and radiation, and the vibration damping effect is not ideal; and Large damping characteristics do not change with temperature, long life and high stability in harsh environments.

2. It is suitable for vibration damping and buffering in various high temperature, low temperature, corrosive and radiation environments, and because of its rubber-like high elasticity, large damping characteristics and excellent physical and mechanical properties of metal, it can be used for pipelines of rocket engines, The instruments in the instrument cabin, the equipment in the inertial navigation system and the vibration damping and buffering of the solar panels of the spacecraft.

3. In practical engineering applications, it can not only realize the vibration damping and buffering effect during compression and stretching in the axial direction, but also play a certain vibration damping and buffering effect on the impact load from the radial direction, which is beneficial to the entire vibration damping system. play a certain protective role. The most important thing is that when the pipeline is torsionally deformed by vibration and shock, the bellows sleeve can absorb the torsional inertia transmitted by the pipeline, and it will twist with the torsion of the pipeline, which can dissipate the vibration energy and achieve the effect of vibration reduction. It will cause the pipeline to burst and play a certain role in protecting the entire cabin.

Description of drawings

Fig. 1 is a structural schematic diagram 1 of the present invention;

Fig. 2 is a structural schematic diagram II of the present invention;

Fig. 3 is a schematic diagram of bellows size and metal rubber size of the present invention;

In the figure: 1-flange, 2-corrugated metal sleeve, 3-clamp, 4-fastening bolt, 5-corrugated tubular metal rubber, 6-corrugated tube, 61-fixing flange, 62-fixing bolt , 7-metal rubber, 8-metal rubber A side, 9-metal rubber B side, 10-pipe.

Detailed ways

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings, but the present invention is not limited thereto.

Refer to Figure 1 to Figure 3

A metal rubber shock absorber supported by a bellows, comprising a bellows 6 with fixed flanges 61 at both ends, and a bellows-shaped metal rubber 5 with the same corrugation size as the bellows is placed outside the bellows. The corrugation depth H of the corrugated tubular metal rubber is equal to the corrugation width D, and the corrugated metal sleeve 2 is installed on the outside of the metal rubber, and several clamps 3 are installed at intervals along the length direction of the corrugated metal sleeve.

In this embodiment, the corrugated metal pipe sleeve is equipped with hoops located at both ends and a hoop located in the middle along its length direction, and the hoops are fixed on the outside of the corrugated metal pipe sleeve by fastening bolts 4 .

In this embodiment, the fixing flanges at both ends of the bellows are fixedly connected to the pipeline 10 with the flange 1 at the end through fixing bolts 62 respectively.

A method for forming a metal rubber shock absorber supported by a bellows, comprising the following steps:

1) According to the actual situation of the project, the corrugated metal sleeve matching with the bellows is designed;

2) In order to allow the metal rubber to be better embedded between the adjacent corrugations of the bellows, it is necessary to prepare a metal rubber plate, and then use a special mold to roll the metal rubber plate multiple times to form a bellows-shaped metal rubber. The corrugations of the bellows-shaped metal rubber are the same size as the corrugations of the bellows, and the depth H and width D of the corrugations of the bellows-shaped metal rubber are the same;

3) The bellows-shaped metal rubber that has been rolled many times is wound outside the bellows with a special tool, and the corrugations of the bellows-shaped metal rubber are pressed into the corrugations between the bellows;

4) After the bellows metal rubber is installed, install the corrugated metal sleeve on the outer layer of the metal rubber of the bellows pile;

5) Finally, install three hoops outside the corrugated metal sleeve and fix them with fastening bolts to prevent the metal rubber from slipping out of the corrugations when subjected to impact loads, which will affect the vibration reduction effect.

Working principle: When the metal rubber bellows shock absorber is subjected to the axial load force F1, the bellows will first be squeezed and deformed, and when the force gradually increases, the A and B sides of the metal rubber will be squeezed Deformation, friction, slippage, and extrusion occur between the helical turns of the metal wire, dissipating a large amount of vibration energy, and playing the role of vibration damping and buffering. When the metal rubber bellows shock absorber is subjected to radial load force F2, the force first acts on the corrugated metal sleeve, and then is transmitted to the metal rubber, and the helical coil of the metal wire undergoes friction and slippage after being subjected to a dynamic load , extrusion phenomenon, and then dissipate the vibration energy. When the pipeline installed on the submarine is attacked by various weapons such as torpedoes, the pipeline usually undergoes torsional deformation. If a conventional metal sleeve is used at this time, the pipeline will collapse after being torsional and deformed. When the corrugated metal sleeve matching the size of the corrugated pipe of the present invention is used, the corrugated metal sleeve will twist with the twisting of the pipeline, thereby dissipating the vibration energy, preventing the pipeline from being broken and damaged, thereby protecting the cabin safety. Since the whole metal rubber is a whole, there will be no force unevenness when impacted by loads from all directions, and the vibration damping effect will be greatly improved.

The above description is only a preferred embodiment of the present invention. For those of ordinary skill in the art, according to the teaching of the present invention, it does not require creative work to design metal rubber shock absorbers supported by bellows in different forms. Without departing from the principle and spirit of the present invention, all equivalent changes, modifications, replacements and modifications made according to the patent scope of the present invention shall fall within the scope of the present invention.

Claims (1)

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:

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) 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;

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.