CN212226398U - Three-way double-pipeline vibration absorber - Google Patents
Three-way double-pipeline vibration absorber Download PDFInfo
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- CN212226398U CN212226398U CN202020738590.9U CN202020738590U CN212226398U CN 212226398 U CN212226398 U CN 212226398U CN 202020738590 U CN202020738590 U CN 202020738590U CN 212226398 U CN212226398 U CN 212226398U
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Abstract
The utility model provides a three-way double-pipeline vibration absorber, which comprises a metal ring and a vibration-damping rubber block of an elastomer, wherein two installation channels which are matched and sleeved on two pipelines are arranged on the vibration-damping rubber block along the axial direction, and a plurality of anti-skid bulges which are uniformly distributed are arranged on the inner side surface in the installation channels, which is in contact with the pipelines; the outer circumferential surface of the vibration damping rubber block is provided with an installation groove, and the metal ring is sleeved on the installation groove by extruding the vibration damping rubber block; rigidity adjusting holes I along the axial direction are respectively formed in the positions, located on the left side and the right side of the installation channel, in the vibration reduction rubber block, and rigidity adjusting holes II along the axial direction are respectively formed in the positions, located on the upper side and the lower side of the installation channel, in the vibration reduction rubber block. The utility model provides a stable antiskid nature is higher, and the installation is changed conveniently, and is with low costs, and the three-dimensional double-pipe way bump leveller that shakes is inhaled with radial three-dimensional to two vertical.
Description
Technical Field
The utility model relates to a technical field of making an uproar falls in the pipeline damping especially relates to an use three-dimensional double-pipe way bump leveller at the pipeline resonance suppression of products such as vehicle, household electrical appliances.
Background
The vibration and stress of compressor pipelines of products such as air conditioners, refrigerators and the like are important indexes for evaluating quality. The vibration of the household appliance mainly comes from the compressor, the pipeline is a main way for transmitting the vibration, and the vibration-proof design of the pipeline is a key link for designing and manufacturing the household appliance.
The existing pipeline vibration absorber can only carry out vibration control in one direction and can only carry out vibration control in the radial direction of a pipeline, the vibration control can only be carried out on the radial mode of the pipeline at one position, and the vibration absorber needs to be additionally installed at a proper position when the longitudinal vibration of the pipeline at the position is controlled.
The pipeline trends of products such as household appliances, automobiles and the like are complicated, a multi-pipeline distribution mode is often adopted, the existing pipeline vibration absorber can only carry out vibration control on one pipeline, two or more close pipelines can influence each other to a great extent in the vibration attenuation process in the application process, so that the vibration attenuation effect of the pipeline is weakened or loses efficacy, and the service life of the pipeline and the products such as the whole household appliances or automobiles is further influenced.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a stable antiskid nature is higher, and the installation is changed conveniently, and is with low costs, two vertical and radial three-dimensional double-pipe way bump levelers that inhale.
Aiming at the problems, the following technical scheme is provided: the utility model provides a three-dimensional double-pipe way bump leveller which characterized in that: the vibration damping rubber block comprises a metal ring and an elastic body, wherein two installation channels which are matched and sleeved on two pipelines are arranged on the vibration damping rubber block along the axial direction, and a plurality of anti-skid bulges which are uniformly distributed are arranged on the inner side surface in the installation channels, which is in contact with the pipelines; the outer circumferential surface of the vibration damping rubber block is provided with an installation groove, and the metal ring is sleeved on the installation groove by extruding the vibration damping rubber block; rigidity adjusting holes I along the axial direction are respectively formed in the positions, located on the left side and the right side of the installation channel, in the vibration reduction rubber block, and rigidity adjusting holes II along the axial direction are respectively formed in the positions, located on the upper side and the lower side of the installation channel, in the vibration reduction rubber block.
The utility model discloses further set up to: the vibration-damping rubber block is fittingly sleeved on two pipelines with the same thickness, and the two mounting channels are symmetrically distributed about the central axis of the vibration-damping rubber block.
The utility model discloses further set up to: the first rigidity adjusting holes are symmetrically distributed about the central axis of the vibration damping rubber block, the second rigidity adjusting holes are three, and the second rigidity adjusting holes are symmetrically distributed about the central axis of the vibration damping rubber block.
The utility model discloses further set up to: the outer side wall of the vibration-damping rubber block and the two installation channels are provided with seamless openings, and the vibration-damping rubber block is sleeved on the two pipelines in a matching mode through the seamless openings.
The utility model discloses further set up to: the vibration-damping rubber block structure is characterized by further comprising four limiting devices fixedly sleeved on the pipelines and installed adjacent to the outer side wall of the vibration-damping rubber block, wherein the four limiting devices are installed on the outer side walls of the vibration-damping rubber blocks on the two pipelines respectively.
The utility model discloses further set up to: the damping rubber block is an ellipsoidal elastomer, the two mounting channels are located on the long axis diameter of the damping rubber block, the mounting groove is an elliptical groove, the metal ring comprises two semi-elliptical rings, the ends of the two semi-elliptical rings are provided with folding lugs, and the two semi-elliptical rings are connected through bolts penetrating the folding lugs to form a whole elliptical ring which is matched with the mounting groove.
The utility model discloses further set up to: the vibration-damping rubber block is made of a viscoelastic material.
The utility model has the advantages that:
1, this technical scheme is on the basis that does not change original structure of pipeline, mounting means, and the design of absorbing is inhaled to the great frequency band of vibration amplitude, and the elastic element damping is glued the piece and is produced alone simultaneously, does not have the vulcanization technology with the becket, greatly reduced manufacturing cost, the form that elastic element and becket adopt the draw-in groove to be connected, and the installation is changed simple and conveniently.
2, this three-dimensional double-pipe vibration absorber has set up two installation passageway on the piece is glued in the damping, glues the piece adaptation cover simultaneously on two pipelines with the damping through installation passageway, carries out the damping simultaneously to two pipelines, and the ascending rigidity of three-dimensional direction can be adjusted through the position quantity size in rigidity regulation hole, realizes three-dimensional multifrequency vibration control. Further, the utility model discloses install on two equal, the position equal, two equal symmetric distributions in rigidity regulation hole one and rigidity regulation hole, the size is the same, to two pipeline three-dimensional vibration control of thickness.
3, the three-way double-pipeline vibration absorber is provided with the anti-skid protrusions on the inner wall of the installation channel of the vibration-damping rubber block, meanwhile, the limiting device is installed on the outer side wall of the vibration-damping rubber block on the pipeline, and the anti-skid protrusions and the limiting device play a role together to prevent the vibration absorber from sliding on the pipeline as a whole, so that the stability of the vibration absorber is higher; the vibration-damping rubber block can be provided with a seamless opening to facilitate the installation of the vibration absorber.
Drawings
FIG. 1 is a schematic view of an assembly structure of a metal ring and a damping rubber block in an embodiment of the present invention;
fig. 2 is a schematic sectional view of the three-way dual-pipe vibration absorber installed on a pipe according to an embodiment of the present invention.
The figure shows schematically: 1-a metal ring; 11-a semi-elliptical ring; 111-folding ears; 2-damping rubber block; 21-installing a channel; 211-non-slip bumps; 22-mounting grooves; 23-a stiffness adjustment aperture one; 24-a second rigidity adjusting hole; 25-seamless opening; 3-a stopper; 4-pipeline;
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a three-way dual-pipeline vibration absorber comprises a metal ring 1 and a vibration-damping rubber block 2 made of an elastic body, wherein two installation channels 21 which are adapted to be sleeved on two pipelines 4 are arranged on the vibration-damping rubber block 2 along the axial direction, and a plurality of anti-skid protrusions 211 which are uniformly distributed are arranged on the inner side surface of each installation channel 21, which is in contact with the pipelines 4; an installation groove 22 is formed in the outer circumferential surface of the vibration damping rubber block 2, and the metal ring 1 is sleeved on the installation groove 22 by extruding the vibration damping rubber block 2; rigidity adjusting holes 23 along the axial direction are respectively formed in the positions, located on the left side and the right side of the installation channel 21, in the vibration damping rubber block 2, and rigidity adjusting holes 24 along the axial direction are respectively formed in the positions, located on the upper side and the lower side of the installation channel 21. The vibration damping rubber block 2 is made of a viscoelastic material.
Above-mentioned three-way double-pipe vibration absorber is on the basis that does not change 4 original structures of pipeline, mounting means, and the design of absorbing vibration is carried out to the great frequency band of vibration amplitude, and elastic element damping rubber block 2 produces alone simultaneously, does not have the vulcanization technology with becket 1, greatly reduced manufacturing cost, and elastic element damping rubber block 2 adopts the form that the draw-in groove is connected with becket 1, and the installation is changed simple and conveniently. The section of the metal ring 1 can be square, round or other shapes, and the different shapes correspond to different radial and longitudinal stiffness ratios of the vibration absorber.
This three-way double-pipe vibration absorber has set up two installation passageway 21 on the piece 2 is glued in the damping, glues piece 2 adaptation cover simultaneously on two pipelines 4 through installation passageway 21 with the damping, carry out the damping simultaneously to two pipelines 4, and the position, quantity, the size that can adjust through the rigidity regulation hole one 23 that distributes about and the rigidity regulation hole two 24 that distributes from top to bottom on the three-dimensional direction promptly two vertical and radial rigidity to realize three-way double-pipe multi-frequency vibration control.
In a similar way, the technical scheme is not limited to the installation of the double pipelines 4, and a plurality of installation channels can be further arranged and installed on the pipelines 4, so that the three-way multi-pipeline multi-frequency vibration control is carried out on the pipelines 4. In addition, the number of the metal rings can be increased according to actual conditions so as to adapt to pipeline vibration control with more frequencies.
Meanwhile, the anti-skid protrusions 211 are arranged on the inner side face of the mounting channel 21, the anti-skid protrusions 211 are in contact with the pipe wall, friction force between the vibration damping rubber blocks 2 and the pipe wall is further increased, the vibration damping rubber blocks 2 are prevented from sliding on the pipeline 4, and therefore the anti-skid effect of the whole vibration damper is improved.
As shown in fig. 1 and 2, the damping rubber block 2 is adapted to be sleeved on two pipelines 4 with the same thickness, and the two mounting channels 21 are symmetrically distributed about the central axis of the damping rubber block 2. The first rigidity adjusting holes 23 are symmetrically distributed about the central axis of the vibration damping rubber block 2, the second rigidity adjusting holes 24 are three, and the second rigidity adjusting holes 24 are symmetrically distributed about the central axis of the vibration damping rubber block 2. When the vibration-damping rubber blocks 2 are arranged on two pipelines 4 which have the same thickness and are adjacent in position, the stiffness adjusting holes I23 in the left-right direction and the stiffness adjusting holes II 24 in the up-down direction can be symmetrically distributed, and the holes in one direction have the same size, so that the vibration-damping rubber blocks can play a role together to control the three-way vibration of the two pipelines 4.
As shown in fig. 1, a seamless opening 25 is provided between the outer side wall of the damping rubber block 2 and the two mounting channels 21, and the damping rubber block 2 is fittingly sleeved on the two pipelines 4 through the seamless opening 25. The seamless opening 25 facilitates the mounting of the vibration absorber without affecting its stability during use.
As shown in fig. 2, the three-way double-pipeline vibration absorber further includes four stoppers 3 fixedly sleeved on the pipelines 4 and installed adjacent to the outer side walls of the vibration-damping rubber blocks 2, and the stoppers 3 are respectively installed on the outer side walls of the vibration-damping rubber blocks 2 on the two pipelines 4. The stopper 3 and the anti-slip protrusion 211 play a role together, so that the whole vibration absorber is further prevented from slipping on the pipeline 4, and the stability of the vibration absorber is higher.
As shown in fig. 1 and 2, the damping rubber block 2 is an ellipsoidal elastic body, the two mounting channels 21 are located on the major axis diameter of the damping rubber block 2, the mounting groove 22 is an ellipsoidal groove, the metal ring 1 includes two semi-elliptical rings 11 each having a bending lug 111 at its end, and the two semi-elliptical rings 11 are connected by a bolt passing through the bending lug 111 to form a complete elliptical ring adapted to be fitted on the mounting groove 22.
The damping rubber block 2 is designed into an ellipsoidal elastomer, is convenient to process and high in overall stability, the metal ring 1 is sleeved on the pipeline 4 in advance before pipeline welding or installation, if the condition does not allow the installation in advance, the design mode that the two ends of the metal ring are respectively provided with the semi-elliptical ring 11 of the folded lug 111 can be adopted, and then the metal ring penetrates through the folded lug 111 through a bolt to be connected to form a whole elliptical ring sleeved on the pipeline 4.
The design method of the three-way double-pipeline vibration absorber comprises the following steps:
(1) determining the frequency and direction of the vibration of the double pipeline 4, generally controlling the previous-order or two-order mode of the double pipeline 4, or considering the vibration reduction requirement of the special working condition of the double pipeline 4, for example, the double pipeline 4 excites large vibration at a certain frequency, but the frequency does not have the natural frequency, and the vibration absorber with the frequency can also be designed to reduce the vibration of the double pipeline 4 at the frequency.
The following describes the design process by taking the first two-stage mode of the dual pipeline 4 as an example. Modal calculation is carried out on the double pipelines 4 by using a finite element method to obtain the first 2-order modal shape and modal frequency (the first 2-order modal shape generally corresponds to the low-bending radial vibration and longitudinal vibration of the double pipelines); and selecting a position on the double pipeline 4, wherein the position is in a large deformation state in the first 2-order modal shape, arranging an acceleration sensor, carrying out a hammering test on the double pipeline 4 aiming at the first two-order modal, determining the frequency and the vibration direction of the first 2-order modal through a frequency response function, and determining the accuracy of finite element calculation. The arrangement position of the acceleration sensor can be used as the installation position of the three-way pipeline vibration absorber, and the front two-order modal frequency and the vibration direction are designed to be the modal frequency and the vibration direction of the three-way pipeline vibration absorber.
(2) Adding a three-way pipeline vibration absorber model into a pipeline finite element model, calculating the vibration response of the double pipeline 4 according to the actual load, adjusting the mass, the rigidity and the damping parameters of the three-way pipeline vibration absorber according to the vibration reduction requirement and the actual condition of the double pipeline 4, enabling the vibration response of the double pipeline 4 to reach the requirement, and determining the mass, the radial rigidity, the longitudinal rigidity and the damping performance of the three-way pipeline vibration absorber.
(3) The section shape of a metal ring 1 of the three-way pipeline vibration absorber is selected according to radial and longitudinal rigidity parameters of the three-way pipeline vibration absorber (the ratio of the radial rigidity to the longitudinal rigidity of a square metal ring 1 is large, the ratio of the radial rigidity to the longitudinal rigidity of a circular metal ring 1 is small, other shapes can be designed according to requirements), a three-way pipeline vibration absorber model is built in finite element software, the radial rigidity and the longitudinal rigidity of the three-way pipeline vibration absorber model are calculated, the radial rigidity and the longitudinal rigidity of the three-way pipeline vibration absorber meet the requirements by adjusting the shape and the rigidity of a vibration damping rubber block 2, the size and the number of rigidity adjusting holes and the transverse supporting thickness of the three-way vibration absorber pipeline, and the.
(4) Producing the three-way pipeline vibration absorber according to a drawing, testing the radial rigidity and the longitudinal rigidity, and if the radial rigidity and the longitudinal rigidity do not meet the requirement, adjusting the material hardness or the shape of the vibration damping rubber block 2 until the rigidity requirement is met; and testing the damping performance of the three-way pipeline vibration absorber, and carrying out damping adjustment on the elastic material on the basis of not changing the rigidity performance to finally meet the damping performance of the three-way pipeline vibration absorber, thus the three-way pipeline vibration absorber is manufactured in a trial mode.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (7)
1. The utility model provides a three-dimensional double-pipe way bump leveller which characterized in that: the vibration damping rubber block comprises a metal ring and an elastic body, wherein two installation channels which are matched and sleeved on two pipelines are arranged on the vibration damping rubber block along the axial direction, and a plurality of anti-skid bulges which are uniformly distributed are arranged on the inner side surface in the installation channels, which is in contact with the pipelines; the outer circumferential surface of the vibration damping rubber block is provided with an installation groove, and the metal ring is sleeved on the installation groove by extruding the vibration damping rubber block; rigidity adjusting holes I along the axial direction are respectively formed in the positions, located on the left side and the right side of the installation channel, in the vibration reduction rubber block, and rigidity adjusting holes II along the axial direction are respectively formed in the positions, located on the upper side and the lower side of the installation channel, in the vibration reduction rubber block.
2. The three-way dual pipe vibration absorber according to claim 1 wherein: the vibration-damping rubber block is fittingly sleeved on two pipelines with the same thickness, and the two mounting channels are symmetrically distributed about the central axis of the vibration-damping rubber block.
3. The three-way dual pipe vibration absorber according to claim 2, wherein: the first rigidity adjusting holes are symmetrically distributed about the central axis of the vibration damping rubber block, the second rigidity adjusting holes are three, and the second rigidity adjusting holes are symmetrically distributed about the central axis of the vibration damping rubber block.
4. A three-way dual pipe vibration absorber according to any one of claims 1-3 wherein: the outer side wall of the vibration-damping rubber block and the two installation channels are provided with seamless openings, and the vibration-damping rubber block is sleeved on the two pipelines in a matching mode through the seamless openings.
5. The three-way dual pipe vibration absorber according to claim 1 wherein: the vibration-damping rubber block structure is characterized by further comprising four limiting devices fixedly sleeved on the pipelines and installed adjacent to the outer side wall of the vibration-damping rubber block, wherein the four limiting devices are installed on the outer side walls of the vibration-damping rubber blocks on the two pipelines respectively.
6. The three-way dual pipe vibration absorber according to claim 1 wherein: the damping rubber block is an ellipsoidal elastomer, the two mounting channels are located on the long axis diameter of the damping rubber block, the mounting groove is an elliptical groove, the metal ring comprises two semi-elliptical rings, the ends of the two semi-elliptical rings are provided with folding lugs, and the two semi-elliptical rings are connected through bolts penetrating the folding lugs to form a whole elliptical ring which is matched with the mounting groove.
7. The three-way dual pipe vibration absorber according to claim 1 wherein: the vibration-damping rubber block is made of a viscoelastic material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020738590.9U CN212226398U (en) | 2020-05-07 | 2020-05-07 | Three-way double-pipeline vibration absorber |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020738590.9U CN212226398U (en) | 2020-05-07 | 2020-05-07 | Three-way double-pipeline vibration absorber |
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| CN212226398U true CN212226398U (en) | 2020-12-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11965580B2 (en) | 2021-07-12 | 2024-04-23 | Universidade Federal Do Parana | Tunable viscoelastic neutralizer with oscillating mass on shaft for control of vibrations in pipes in general |
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2020
- 2020-05-07 CN CN202020738590.9U patent/CN212226398U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11965580B2 (en) | 2021-07-12 | 2024-04-23 | Universidade Federal Do Parana | Tunable viscoelastic neutralizer with oscillating mass on shaft for control of vibrations in pipes in general |
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