CN207750437U - A kind of bellows-type buffer - Google Patents
A kind of bellows-type buffer Download PDFInfo
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- CN207750437U CN207750437U CN201721639282.5U CN201721639282U CN207750437U CN 207750437 U CN207750437 U CN 207750437U CN 201721639282 U CN201721639282 U CN 201721639282U CN 207750437 U CN207750437 U CN 207750437U
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- China
- Prior art keywords
- bellows
- pipe
- corrugated pipe
- piston
- upper head
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- 239000000872 buffer Substances 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000001307 helium Substances 0.000 claims description 2
- 229910052734 helium Inorganic materials 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 239000003570 air Substances 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 238000013016 damping Methods 0.000 abstract description 25
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000002955 isolation Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a kind of bellows-type buffers, including：Upper head plate, bottom plate, outward corrugated tube, piston, inner corrugated pipe, mass block, variable cross-section spindle and limited block.Wherein, upper head plate is fixedly connected by through-hole with mechanical equipment or installation foundation respectively with bottom plate.Outward corrugated tube both ends are respectively fixedly connected with upper head plate and bottom plate, play vibration isolation support.Inner corrugated pipe is mounted in outward corrugated tube, and both ends are respectively fixedly connected with upper head plate and mass block.Inner corrugated pipe middle section is that limited block is arranged in pipe, straight round tube inner wall both ends always, and piston, which is installed on, to be axially moved in this straight pipe and limited by limited block, is risen and is adjusted axial stiffness.Meanwhile variable cross-section spindle being installed on bottom plate, play the role of variable damping with mass block cooperation, the performance of buffer can be controlled.The bellows-type novel buffer of the utility model is simple and reliable for structure, good airproof performance, applied widely and maintenance are convenient, has very high practical value.
Description
Technical field
The present invention relates to mechanical vibration damping field more particularly to a kind of bellows buffers.
Background technology
Currently, many mechanical structures have mechanical oscillation, lead to shaking due to structure itself during the work time
The energy of movable property life cannot transmit and generate damage to structure in time.Therefore, need setting slow in the mechanical structure for having vibration
Rush device.
The vibration-proof structure now generally combined using spring, cartridge type or both.Spring can be absorbed by deformation and be vibrated
Energy, but its damping is small, when itself absorbing, have reciprocating motion.The general inner cavity filling liquid pressure oil of cartridge type vibration damping or gas, this
For kind damper when coping with impact vibration, damping is big, and dynamic is corresponding slow, often leads to equipment because that can not absorb vibrational energy immediately
It is impaired.In addition also there is a vibration damping mode for being combined spring damping with cartridge type vibration damping, but be typically all simple superposition, such as by bullet
Spring is sleeved on outside cylinder, and integrated level is not high.
Chinese patent CN101236119A, 2008. disclose " a kind of corrugated pipe buffers ", the wave of tank interior
Spring is set in line pipe and the cavity of cover composition and is filled with gas, and absorbs the vibrational energy of material together with bellows, is protected
It is accurate that card pump pressure measures.Spring is arranged in cylinder this buffer unit, it has been observed that only spring and cartridge type are superimposed,
System damping is unadjustable, does not have universal applicability.
Invention content
The technical problem to be solved in the present invention is to provide it is a kind of it is simple and reliable for structure, integrated level is high, maintenance is convenient, leakproofness
Good, damping can be self-regulated and the bellows-type buffer with general applicability.Conventional requirement can not only be met, it is resistance to for heatproof
Pressure property requires height, has the special occasions such as corrosion also especially suitable.
In order to solve the above technical problems, the technical scheme is that：
A kind of bellows-type buffer, including upper head plate, bottom plate, outward corrugated tube, piston, inner corrugated pipe, mass block, change
Section spindle and limited block.
The upper head plate is fixedly connected with the both ends of outward corrugated tube respectively with bottom plate.
The inner corrugated pipe is located in outward corrugated tube, is made of two sections of bellowss and one section of straight pipe, and straight pipe is located at two
Between section bellows.Inner corrugated pipe one end is fixedly connected with upper head plate, and the other end is fixedly connected with mass block, and mass block is provided with logical
Hole.
The piston is located in the straight pipe section of inner corrugated pipe, axially moves.
The variable cross-section spindle is mounted on bottom plate, and tip is opposite with the center of mass block through-hole.
Preferably, upper head plate is evenly distributed with the outer rim of bottom plate for being fixedly connected with mechanical equipment or installation foundation
Through-hole.
Preferably, the inner corrugated pipe being made of with one section of straight pipe two sections of bellowss is an integral structure.
Preferably, the upper head plate, bottom plate, outward corrugated tube, piston, inner corrugated pipe, mass block, mass block through-hole and
Variable cross-section spindle coaxial line.
Preferably, the outward corrugated tube and inner corrugated pipe use metal or nonmetallic materials.
Preferably, the cavity inside being made of upper head plate, piston and inner corrugated pipe fills compressible gas, including air, nitrogen
Gas or helium.
Preferably, the bellows piece of the inner corrugated pipe and outward corrugated tube are the cylindrical housings with transverse wave.
Preferably, the cavity inside filling liquid pressure oil being made of upper head plate, lower face, piston, inner corrugated pipe and outward corrugated tube.
Preferably, on the both ends inner wall of the straight pipe section of inner corrugated pipe, limited block is arranged in the both sides of piston, to making axial fortune
Dynamic piston is limited.
Compared with prior art, the beneficial effects of the present invention are：
One, applied widely：Bellows material can select to use metal or nonmetallic materials, device resistance according to material characteristic
Buddhist nun can change according to operating mode, can not only meet conventional requirement, to heat resisting and pressure resisting require it is high, have the special occasions such as corrosion also particularly
It is applicable in；
Two, simple and reliable：Simple in structure, effective member is integrated in outward corrugated tube, and Path of Force Transfer is short to ensure that buffering subtracts
Shake high efficient and reliable；
Three, airtight performance is good：The mode of being fixedly connected is all made of in addition to piston；
Four, maintenance is convenient：By external observation whether have fluid leak out can judgment means whether damage and can be in outside
Leak source is repaired.
Description of the drawings
Attached drawing 1 is the sectional view of the bellows-type buffer of the present invention；
In Fig. 1：1- upper head plates；2- bottom plates；3- outward corrugated tubes；4- pistons；5- inner corrugated pipes；6- mass blocks；7-, which becomes, to be cut
Face spindle；8- limited blocks；m1The quality of upper head plate 1；m2The quality of mass block 6.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
A kind of bellows-type buffer as shown in Figure 1 is a kind of buffer unit based on Bellows Technology, including upper end
Plate 1, bottom plate 2, outward corrugated tube 3, piston 4, inner corrugated pipe 5, mass block 6, variable cross-section spindle 7 and limited block 8.
The both ends of outward corrugated tube 3 are respectively welded on upper head plate 1 and bottom plate 2, the outer rim edge of upper head plate 1 and bottom plate 2
The circumferential uniformly distributed through-hole for being fixedly connected with mechanical equipment or installation foundation.Inner corrugated pipe 5 is located in outward corrugated tube 3, by
Two sections of bellowss are welded with one section of straight pipe, and straight pipe is located between two sections of bellowss.One end of inner corrugated pipe 5 is welded on
On upper head plate 1, the center of other end welding quality block 6, mass block 6 is provided with through-hole (damping hole).Piston 4 is in interior ripple
In the straight pipe section of pipe 5, limited block 8 is arranged on straight tube ends inner wall, and piston 4 can make axial movement in pipe and by two
The limitation of the limited block 8 on side.Variable cross-section spindle 7 is mounted on bottom plate 2, and tip is opposite with the center of 6 through-hole of mass block.On
End plate 1, bottom plate 2, outward corrugated tube 3, piston 4, inner corrugated pipe 5, mass block 6, the through-hole of mass block 6 and variable cross-section spindle 7 are same
Axis.It is filled with compressible gas in the cavity inside being made of upper head plate 1, piston 4 and inner corrugated pipe 5, plays gas spring
Effect, and the axial rigidity of the device can be controlled by the up and down motion of piston 4.By upper head plate 1, bottom plate 2, external wave
The cavity inside that line pipe 3, piston 4 and inner corrugated pipe 5 form is filled with incompressible fluid.When the device works, can lead to
The variable cross-section spindle 7 crossed on bottom plate 2 coordinates to change damping with mass block 6, and the device resiliency is controlled to reach
The purpose of energy.
The operation principle of the present invention is：
When the perturbed force that mechanical equipment generates acts on outward corrugated tube 3 by upper head plate 1, outward corrugated tube 3 can freely occur
Axial deformation provides the elastic restoring force needed for vibration isolation, makes to be transmitted to the vibrational energy on the basis of the namely buffer of bottom plate 2
Greatly reduce.Fluid meeting in the cavity being made of upper head plate 1, bottom plate 2, outward corrugated tube 3, inner corrugated pipe 5 and mass block 6
It is compressed, fluid enters the sky being made of piston 4, inner corrugated pipe 5 and mass block 6 by the through-hole (damping hole) of mass block 6
Intracavitary will produce different dampings moreover, when variable cross-section spindle 7 enters through-hole (damping hole) of mass block 6.Cavity inside
Oil liquid pressure increases, and piston 4 is made to move upwards, and to adjust the axial rigidity of buffer, piston 4 is limited by limited block 8.Meanwhile
Gas in the cavity being made of upper head plate 1, piston 4 and inner corrugated pipe 5 can be compressed, and gas spring is played the role of.
The bellows-type bumper property simulated experiment of the present invention as shown in Table 1 is as a result, two end plates in vibration processes
Stress and motion conditions paste foil gauge on upper head plate 1 and bottom plate 2 and measure.The cushion performance of buffer mainly by
The axial rigidity k of interior outward corrugated tube 31, mass block 6 quality m2It is determined with the damped coefficient c of system.Increase the rigidity of bellows,
The damping property of system can be significantly improved by increasing the quality of mass block 6.In a certain range, increasing system damping c can carry
The damping property of high system, but when damping greatly to a certain extent, the damping property of system can be with the increase of system damping c
And decline.
Table 1
| m1/kg/kg | m2/kg | k1(kN/m) | k2(kN/m) | C/(Ns/m) | t/s | a1(m/s2) | a2(m/s2) |
| 10 | 1 | 6.924 | 1.746 | 10 | 5 | 1 | 0.4 |
| 10 | 1 | 10.336 | 3.628 | 10 | 3 | 1 | 0.9 |
| 3 | 0.5 | 10.336 | 3.628 | 10 | 2 | 3.2 | 2.3 |
| 3 | 0.5 | 10.336 | 3.628 | 50 | 1.5 | 3.2 | 1.3 |
| 3 | 0.5 | 10.336 | 3.628 | 100 | 2 | 3.2 | 0.8 |
In table 1：m1The quality of upper head plate 1；m2The quality of mass block 6；k1The axial rigidity of outward corrugated tube 3；k2- Nei Bo
The axial rigidity of line pipe 5；C- damped coefficients；The response time of t- systems；a1-m1Acceleration amplitude；a2-m2Acceleration width
Value.
In addition, understanding the diameter of 6 through-hole of mass block (damping hole) and the height of variable cross-section spindle 7 by fluid mechanics knowledge
With cone-apex angle can influence fluid it is through-flow when damping, to being had an impact to system vibration damping.
Therefore, the axial rigidity of each bellows, the quality m of mass block 6 are rationally designed2, 6 through-hole of mass block (damping hole)
The height and cone-apex angle of diameter and variable cross-section spindle 7, can significantly reduce mechanical disturbance power on the basis of being transmitted to and
The vibratory response for reducing mechanical equipment itself reaches preferable buffering vibration isolating effect.
It should be pointed out that embodiment described above is only the preferred embodiment of the present invention, for the art
Those of ordinary skill for, without departing from the principle of the present invention, can also make several improvements, as inner corrugated pipe is adopted
With Split dismountable, buffer structure using asymmetric etc., these improvement also should be regarded as protection scope of the present invention.
Claims (11)
1. a kind of bellows-type buffer, it is characterised in that：Including upper head plate（1）, bottom plate（2）, outward corrugated tube（3）, piston
（4）, inner corrugated pipe（5）, mass block（6）, variable cross-section spindle（7）And limited block（8）；
Upper head plate（1）With bottom plate（2）Respectively with outward corrugated tube（3）Both ends are fixedly connected；
Inner corrugated pipe（5）It is made of two sections of bellowss and one section of straight pipe, straight pipe is located between two sections of bellowss；
Piston（4）Positioned at inner corrugated pipe（5）It is axially moved in straight pipe section；
Inner corrugated pipe（5）Positioned at outward corrugated tube（3）It is interior；
Inner corrugated pipe（5）One end and upper head plate（1）It is fixedly connected；
Inner corrugated pipe（5）The other end and mass block（6）It is fixedly connected；
Mass block（6）It is provided with through-hole；
Variable cross-section spindle（7）Mounted on bottom plate（2）On, variable cross-section spindle（7）Tip and mass block（6）The center phase of through-hole
It is right.
2. a kind of bellows-type buffer according to claim 1, which is characterized in that upper head plate（1）With bottom plate（2）'s
Outer rim is evenly distributed through-hole, for being fixedly connected with mechanical equipment or installation foundation.
3. a kind of bellows-type buffer according to claim 1, which is characterized in that by two sections of bellowss and one section of straight circle
The inner corrugated pipe of pipe composition（5）It is an integral structure.
4. a kind of bellows-type buffer according to claim 1, which is characterized in that upper head plate（1）, bottom plate（2）, it is outer
Bellows（3）, piston（4）, inner corrugated pipe（5）, mass block（6）, mass block（6）Through-hole and variable cross-section spindle（7）Coaxial line.
5. a kind of bellows-type buffer according to claim 1, which is characterized in that the outward corrugated tube（3）With interior wave
Line pipe（5）Using metal or nonmetallic materials.
6. a kind of bellows-type buffer according to claim 1, which is characterized in that by upper head plate（1）, piston（4）With
Inner corrugated pipe（5）The cavity inside of composition fills compressible gas, including air, nitrogen or helium.
7. a kind of bellows-type buffer according to claim 1, which is characterized in that the inner corrugated pipe（5）Ripple
Pipeline section and outward corrugated tube are the cylindrical housings with transverse wave.
8. a kind of bellows-type buffer according to claim 1, which is characterized in that by upper head plate（1）, bottom plate（2）、
Outward corrugated tube（3）, piston（4）And inner corrugated pipe（5）The cavity inside filling liquid pressure oil of composition.
9. a kind of bellows-type buffer according to claim 1, which is characterized in that in inner corrugated pipe（5）Inner wall on,
Piston（4）Both sides be arranged limited block（8）.
10. a kind of bellows-type buffer according to claim 9, which is characterized in that in inner corrugated pipe（5）Straight pipe section
Inner wall on, piston（4）Both sides be arranged limited block（8）.
11. a kind of bellows-type buffer according to claim 1,9 or 10, which is characterized in that in inner corrugated pipe（5）Directly
The inner wall both ends of pipe section, piston（4）Both sides be arranged limited block（8）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721639282.5U CN207750437U (en) | 2017-11-30 | 2017-11-30 | A kind of bellows-type buffer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721639282.5U CN207750437U (en) | 2017-11-30 | 2017-11-30 | A kind of bellows-type buffer |
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| Publication Number | Publication Date |
|---|---|
| CN207750437U true CN207750437U (en) | 2018-08-21 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721639282.5U Active CN207750437U (en) | 2017-11-30 | 2017-11-30 | A kind of bellows-type buffer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939898A (en) * | 2017-11-30 | 2018-04-20 | 南京航空航天大学 | A kind of bellows-type buffer |
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2017
- 2017-11-30 CN CN201721639282.5U patent/CN207750437U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939898A (en) * | 2017-11-30 | 2018-04-20 | 南京航空航天大学 | A kind of bellows-type buffer |
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