CN112610790A - Vibration damper of high-pressure hydraulic hose - Google Patents
Vibration damper of high-pressure hydraulic hose Download PDFInfo
- Publication number
- CN112610790A CN112610790A CN202011520161.5A CN202011520161A CN112610790A CN 112610790 A CN112610790 A CN 112610790A CN 202011520161 A CN202011520161 A CN 202011520161A CN 112610790 A CN112610790 A CN 112610790A
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- China
- Prior art keywords
- pressure hydraulic
- hydraulic hose
- vibration
- damping
- stack actuator
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/005—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion using electro- or magnetostrictive actuation means
- F16F15/007—Piezo-electric elements being placed under pre-constraint, e.g. placed under compression
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/1091—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing with two members, the two members being fixed to each other with fastening members on each side
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0283—Materials; Material properties solids piezoelectric; electro- or magnetostrictive
Abstract
The invention relates to a vibration damper of a high-pressure hydraulic hose, which is characterized by comprising a pipeline clamp, a piezoelectric stack actuator and a viscoelastic damping piece, wherein the pipeline clamp is arranged on the pipeline clamp; the pipeline clamp is clamped at the outer side of the high-pressure hydraulic hose; the viscoelastic damping piece is arranged between the pipeline clamp and the high-pressure hydraulic hose; the piezoelectric stack actuator transfers the acting force to the high-pressure hydraulic hose. The invention has the beneficial effects that: the vibration damping device realizes active vibration control of the high-pressure hydraulic hose through the piezoelectric stack actuator, realizes passive vibration control of the high-pressure hydraulic hose through the viscoelastic damping piece, and realizes active and passive integrated vibration damping effect. And passive damping can eliminate the high-frequency vibration of high-pressure hydraulic hose, and the low-frequency vibration of high-pressure hydraulic hose can be eliminated in initiative damping, can realize the full frequency domain damping of high-pressure hydraulic hose, and possesses the advantage of initiative damping and passive damping simultaneously, has improved vibration damper's reliability.
Description
Technical Field
The invention belongs to the technical field of vibration control, and particularly relates to a vibration damping device of a high-pressure hydraulic hose.
Background
The high-pressure hydraulic hose belongs to a hydraulic auxiliary part, is widely applied to mechanical equipment containing a hydraulic system, is generally used for connecting a fixed hydraulic element and a movable hydraulic element in the mechanical equipment and for a high-pressure oil passage, and has the same important position as a hydraulic hard pipe. Because the high-pressure hydraulic hose is often used for connecting mobile devices and has a certain bending radius, the hose body itself is relatively soft, and when the high-pressure hydraulic hose is subjected to the effects of pressure pulsation excitation in the hose body, external excitation transmitted by other devices, deformation of the hose body caused by movement and the like, the high-pressure hydraulic hose is easy to vibrate. If the vibration is too large, the high-pressure hydraulic hose is easy to swing, the sealing of the pipe joint is damaged, and even the high-pressure hydraulic hose is broken and damaged. Therefore, the method has important research significance and engineering value for inhibiting the vibration of the high-pressure hydraulic pipeline.
In the prior art, methods for suppressing vibration of a hydraulic pipeline include a passive control technology and an active control technology.
The passive control technology mainly comprises the following two types: the first is that a viscoelastic material is added on the hydraulic pipeline body, and the additional viscoelastic material is a high molecular polymer. When the high molecular polymer is acted by an acting force, the high molecular polymer can be correspondingly pulled, pressed, bent and sheared to deform, the elastic component in the polymer can store a part of mechanical energy, the energy is released after the external force disappears, the deformation of the elastic component of the polymer generates resilience, and the mechanical energy absorbed by the viscous component of the polymer cannot be released to the outside and is converted into heat energy to be dissipated. Secondly, the local optimization of the clamp can improve the natural frequency of the pipeline system through the local optimization of the clamp, so that the resonance is avoided.
The active control technology mainly aims at fluid pressure pulsation in a pipeline, secondary pressure pulsation with equal amplitude and opposite phase is introduced through an active pulsation attenuator to eliminate original pressure pulsation of the hydraulic pipeline, and the key core technology of the active control technology is the control rate and the design of an actuator. The most commonly used control rates in the prior art are PID, fuzzy control, neural network control, LQR and FX-LMS algorithms. Piezoelectric actuators are classified into thin film type and stack type according to the piezoelectric ceramics used. The film type is mainly divided into a piezoelectric ceramic piece and a piezoelectric ceramic film, and the film type piezoelectric actuator can be directly pasted on a control object. The piezoelectric stack actuator utilizes the principles of mechanical series connection and electrical parallel connection, and can realize the characteristics of high sensitivity, high power, high corresponding frequency and the like.
In the prior art, the control objects for suppressing vibration of the hydraulic pipeline are mostly concentrated on the hydraulic hard pipe, and the designed vibration damping device needs to change the pipeline installation form of the original hydraulic hard pipe, even needs to disconnect the original pipeline and install the vibration damping device, which brings inconvenience to engineering application. At present, a vibration damping device for a high-pressure hydraulic hose is still rarely studied.
Therefore, it is required to develop a damping device for a high-pressure hydraulic hose.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems that in the prior art, vibration suppression is only performed on a hydraulic hard pipe, the adopted vibration control method is single active vibration reduction or passive vibration reduction control, and the vibration reduction effect is not ideal, the invention provides a vibration reduction device of a high-pressure hydraulic hose, which takes the high-pressure hydraulic hose as a research object and considers the control method combining active control and passive control.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
a vibration damper of a high-pressure hydraulic hose comprises a pipeline clamp, a piezoelectric stack actuator and a viscoelastic damping piece;
the pipeline clamp is clamped at the outer side of the high-pressure hydraulic hose;
the viscoelastic damping piece is attached between the pipeline clamp and the high-pressure hydraulic hose;
the piezoelectric stack actuator transfers the acting force to the high-pressure hydraulic hose.
Preferably, the line clamp comprises an upper line clamp and a lower line clamp;
the upper pipeline clamp and the lower pipeline clamp are fixed with nuts through bolts.
Preferably, a transmission piece is arranged between the high-pressure hydraulic hose and the piezoelectric stack actuator;
the upper surface of the transmission piece is attached to the lower surface of the high-pressure hydraulic hose;
the piezoelectric stack actuator transmits an applied force to the transmission member, which transmits the applied force to the high-pressure hydraulic hose.
Preferably, a high-strength spring is arranged at the upper end of the piezoelectric stack actuator.
Preferably, the adapter of the piezoelectric stack actuator is a flat head.
Preferably, the piezoelectric stack actuator is fixed on the lower pipeline clamp through a bolt and a nut.
Preferably, a clamping block is designed on the transmission piece, a clamping groove is designed on the lower pipeline clamp, and the transmission piece and the lower pipeline clamp are clamped with the clamping groove through the clamping block.
(III) advantageous effects
The invention has the beneficial effects that: the vibration damping device of the high-pressure hydraulic hose provided by the invention is used for damping any position of the high-pressure hydraulic hose in a hydraulic system, is convenient to install and implement and can well restrain the vibration of the high-pressure hydraulic hose.
In addition, the vibration damping device of the high-pressure hydraulic hose realizes active vibration damping of the hydraulic hose through the piezoelectric stack actuator, realizes passive vibration damping of the high-pressure hydraulic hose through the viscoelastic damping piece, and has an active and passive integrated vibration damping function. The active vibration control method based on the inverse piezoelectric effect of the piezoelectric ceramic comprises the steps of detecting vibration of the high-pressure hydraulic hose by a piezoelectric sensor, outputting a control signal through an effective active control algorithm, amplifying power, and applying the control signal to a piezoelectric stack actuator to realize active control of vibration of the high-pressure hydraulic hose, wherein active vibration reduction can eliminate low-frequency vibration of the high-pressure hydraulic hose. By applying the viscoelastic damping piece, the viscoelastic damping material is utilized to absorb and dissipate the vibration energy of the high-pressure hydraulic hose, so that the high-frequency vibration of the high-pressure hydraulic hose can be well eliminated. Therefore, the vibration damping device of the high-pressure hydraulic hose can realize the vibration damping of the high-pressure hydraulic hose in the whole frequency range.
Drawings
FIG. 1 is a schematic view of the structure of a vibration damping device according to the present invention;
FIG. 2 is a schematic view of the lower clamp of the present invention;
FIG. 3 is a schematic structural view of a transfer member of the present invention;
FIG. 4 is a schematic structural diagram of a piezoelectric stack actuator according to the present invention;
fig. 5 is a schematic structural diagram of the upper pipeline clamp of the present invention.
[ description of reference ]
1: a high pressure hydraulic hose; 2: a piezoelectric stack actuator; 3: a high-strength spring; 4: a transfer member; 5: a lower pipeline clamp; 6: a viscoelastic damping member; 7: an upper pipeline clamp; 8: a bolt; 9: a gasket; 10: and a nut.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
As shown in fig. 1 to 5, the embodiment of the present invention provides a damping device for a high-pressure hydraulic hose, which includes a pipe clamp, a piezoelectric stack actuator 2, and a viscoelastic damping member 6.
The pipeline clamp consists of an upper pipeline clamp 7 and a lower pipeline clamp 5 and is clamped at the outer side of the high-pressure hydraulic hose 1;
a viscoelastic damping member 6 is disposed between the line clamp and the high-pressure hydraulic hose 1.
The piezo stack actuator 2 transfers the force to the high pressure hydraulic hose 1.
The piezoelectric stack actuator 2 is mounted and fixed on the lower pipe clamp 5 by taking piezoelectric ceramics as a basic element, and outputs displacement and force.
The vibration damping device of the high-pressure hydraulic hose can be conveniently installed at any position outside the high-pressure hydraulic hose, and can well inhibit the vibration excitation of the pressure pulsation of fluid to the high-pressure hydraulic hose.
Particularly, the vibration damping device of the high-pressure hydraulic hose is arranged at the high-pressure hydraulic hose 1 connected with the outlet of the pump source, belongs to the vibration damping of the source of the pump source, and can better inhibit the vibration of pressure pulsation on a hydraulic system.
In addition, according to the vibration damping device for the high-pressure hydraulic hose, active vibration damping of the high-pressure hydraulic hose 1 is achieved through the piezoelectric stack actuator 2, passive vibration damping of the high-pressure hydraulic hose 1 is achieved through the viscoelastic damping piece 6, and an active and passive integrated vibration damping function is achieved. The principle of active control by adopting the piezoelectric stack actuator 2 is as follows: when the high-pressure hydraulic hose 1 is excited by high-pressure pulsation, the piezoelectric acceleration sensor detects the vibration of the pipeline, the vibration is converted into an analog voltage signal through the signal conditioning unit, the analog quantity is converted into a digital quantity through the A/D module, and the digital quantity enters the main control module in the control unit. The main control module has the capability of processing a large amount of data at a high speed, firstly carries out cache processing on digital quantity data entering the main controller, then carries out operation according to a pre-designed control algorithm to obtain a control signal of the digital quantity, and then carries out digital-to-analog conversion through a D/A module of the control signal to convert the digital quantity control signal into an analog quantity control signal. Because the directly obtained analog control signal cannot drive the piezoelectric stack actuator 2 to effectively actuate, the voltage driving amplification unit is required to obtain an amplification control signal capable of effectively driving the piezoelectric ceramic stack actuator 2 to actuate, and the actuation generated by the piezoelectric stack actuator 2 can effectively suppress the vibration of the high-pressure hydraulic hose 1.
Based on the active vibration control of the piezoelectric stack actuator 2, the piezoelectric sensor detects the vibration of the high-pressure hydraulic hose, the control signal is output through an active control algorithm, and the control signal is applied to the piezoelectric stack actuator 2 after power amplification, so that the active vibration control is realized, and the active vibration reduction can eliminate the low frequency in the high-pressure hydraulic pipeline. By applying the viscoelastic damping member 6, the high-frequency vibration of the high-pressure hydraulic hose 1 can be well eliminated by absorbing and dissipating the vibration energy of the high-pressure hydraulic hose 1 by using a viscoelastic damping material. Therefore, the vibration damping device of the invention can realize vibration damping in the whole frequency range.
Preferably, the pipe clamp of the damping device of the high-pressure hydraulic hose according to the embodiment of the present invention includes an upper pipe clamp 7 and a lower pipe clamp 5, the upper pipe clamp 7 and the lower pipe clamp 5 are fixed by a bolt 8 and a nut 10, and a gasket 9 is disposed between the bolt and the upper pipe clamp 7. The gasket 9 mainly has the functions of increasing the contact area, reducing the pressure of the upper pipeline clamp and preventing the upper pipeline clamp 7 and the lower pipeline clamp 5 from loosening. The gasket 9 can prevent the surface of the part from being abraded, and can also prevent the bolt 8 from loosening with the upper and lower pipeline clamps.
Preferably, according to the damping device for the high-pressure hydraulic hose of the embodiment of the invention, the transmission member 4 is arranged between the high-pressure hydraulic hose 1 and the piezoelectric stack actuator 2. The upper surface of transfer member 4 and the lower surface laminating of high-pressure hydraulic hose 1, piezoelectric stack actuator 2 transmits effort to transfer member 4, and transfer member 4 transmits the effort to high-pressure hydraulic hose 1. When the high-pressure hydraulic hose 1 vibrates, the cylindrical piezoelectric stack actuator 2 generates acting force to act on the transmission piece 4, and acts on the high-pressure hydraulic hose 1 through the transmission piece 4, so that active vibration reduction of the high-pressure hydraulic hose 1 is realized. The transmission piece 4 is attached to the lower surface of the high-pressure hydraulic pipeline 1, so that the stress area of the high-pressure hydraulic hose 1 can be increased, and the vibration reduction effect can be better realized. The lower tube clamp 5 has a base on which the piezo stack actuator 2 is mounted on the lower tube clamp 5.
Preferably, the piezoelectric stack actuator 2 of the damping device of the high-pressure hydraulic hose of the embodiment of the invention is fixed on the lower pipe clamp 5 through a bolt 8.
The base of the lower pipeline clamp 5 can be fixed on the foundation through bolts so as to reduce the shaking of the high-pressure hydraulic pipeline 1.
The upper surface of transmission piece 4 is the cambered surface, with 1 external diameter fit of high pressure hydraulic hose, the lower surface of transmission piece 4 is the plane, and piezoelectric stack actuator 2's adapter is the crew cut, better realization and the transmission function between the transmission piece 4 reach the purpose of initiative damping.
Because the piezoelectric stack actuator 2 has the characteristics of compression resistance and no tensile strength, the piezoelectric stack actuator 2 is pre-tightened by the high-strength spring 3, and the high-strength spring 3 is arranged at the upper end of the piezoelectric stack actuator 2. The high-strength spring 3 transmits acting force generated by the piezoelectric stack actuator 2 to the transmission piece 4, and the transmission piece 4 acts the acting force on the high-pressure hydraulic hose 1 to realize active vibration reduction of the high-pressure hydraulic hose 1.
Preferably, as shown in fig. 2 to 3, clamping blocks are designed at the left end and the right end of the transmission piece 4, a clamping groove is formed in the lower pipeline clamp 5, the transmission piece 4 is clamped with the lower pipeline clamp 5, and the transmission piece 4 is clamped with the high-pressure hydraulic pipeline 1.
The above embodiments are merely illustrative, and not restrictive, of the scope of the invention, and those skilled in the art will be able to make various changes and modifications within the scope of the appended claims without departing from the spirit of the invention.
Claims (7)
1. The damping device of the high-pressure hydraulic hose is characterized by comprising a pipeline clamp, a piezoelectric stack actuator (2) and a viscoelastic damping piece (6);
the pipeline clamp is clamped at the outer side of the high-pressure hydraulic hose (1);
the viscoelastic damping piece (6) is applied between the pipeline clamp and the high-pressure hydraulic hose (1);
the piezoelectric stack actuator (2) transmits the acting force to the high-pressure hydraulic hose (1).
2. Damping device according to claim 1, characterized in that the pipe clamp comprises an upper pipe clamp (7) and a lower pipe clamp (5);
the upper pipeline clamp (7) and the lower pipeline clamp (5) are fixed with a nut (10) through a bolt (8).
3. Damping device according to claim 1, characterized in that a transmission element (4) is arranged between the high-pressure hydraulic hose (1) and the piezo stack actuator (2);
the upper surface of the transmission piece (4) is attached to the lower surface of the high-pressure hydraulic hose (1);
the piezoelectric stack actuator (2) transmits the acting force to the transmission piece (4), and the transmission piece (4) transmits the acting force to the high-pressure hydraulic hose (1).
4. The damping device according to claim 1, characterized in that the piezoelectric stack actuator (2) is provided with a high-strength spring (3) at its upper end.
5. The damping device according to claim 1, characterized in that the adapter of the piezo stack actuator (2) is a flat head.
6. Damping device according to claim 2, characterized in that the piezo stack actuator (2) is fixed to the lower pipe clamp (5) by means of a bolt (8) and a nut (10).
7. The transfer piece (4) according to claim 2, wherein a clamping block is arranged on the transfer piece (4), a clamping groove is arranged on the lower pipeline clamp (5), and the transfer piece (4) and the lower pipeline clamp (5) are clamped with the clamping groove through the clamping block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520161.5A CN112610790A (en) | 2020-12-21 | 2020-12-21 | Vibration damper of high-pressure hydraulic hose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011520161.5A CN112610790A (en) | 2020-12-21 | 2020-12-21 | Vibration damper of high-pressure hydraulic hose |
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| Publication Number | Publication Date |
|---|---|
| CN112610790A true CN112610790A (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011520161.5A Pending CN112610790A (en) | 2020-12-21 | 2020-12-21 | Vibration damper of high-pressure hydraulic hose |
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| CN110745209A (en) * | 2019-11-29 | 2020-02-04 | 烟台大学 | Connecting structure, connecting method and control system for pipeline and vibration reduction assembly |
| CN211779403U (en) * | 2020-03-10 | 2020-10-27 | 宁夏诚通景观市政建设工程有限公司 | A pipeline bracket for hydraulic engineering |
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2020
- 2020-12-21 CN CN202011520161.5A patent/CN112610790A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013015671A1 (en) * | 2011-07-25 | 2013-01-31 | Mimos Berhad | A piezoresistive accelerometer |
| CN103375529A (en) * | 2012-04-24 | 2013-10-30 | 美卓造纸机械公司 | Arrangement for damping vibration of rollers of calender |
| US10393704B2 (en) * | 2015-10-30 | 2019-08-27 | Qorvo Us, Inc. | Multi-frequency BAW mixing and sensing system and method |
| CN105889642A (en) * | 2016-06-12 | 2016-08-24 | 哈尔滨工程大学 | Intelligent shock absorber of pipeline |
| CN207333566U (en) * | 2017-10-11 | 2018-05-08 | 王烁 | A kind of petroleum pipeline support device |
| CN207661226U (en) * | 2017-12-14 | 2018-07-27 | 张建华 | A kind of protection fixing device of hydraulic engineering pipeline |
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| CN110440087A (en) * | 2019-08-15 | 2019-11-12 | 武汉理工大学 | It is a kind of based on piezoelectric stack driving pipeline actively subtract isolation mounting and control system |
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Application publication date: 20210406 |
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