CN113653759A - Active and passive vibration reduction supporting device for shafting transverse vibration transmission control - Google Patents
Active and passive vibration reduction supporting device for shafting transverse vibration transmission control Download PDFInfo
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- CN113653759A CN113653759A CN202110970383.5A CN202110970383A CN113653759A CN 113653759 A CN113653759 A CN 113653759A CN 202110970383 A CN202110970383 A CN 202110970383A CN 113653759 A CN113653759 A CN 113653759A
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- electromagnetic
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- shafting
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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
- F16F6/00—Magnetic springs; Fluid magnetic springs, i.e. magnetic spring combined with a fluid
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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
- F16F15/03—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 magnetic or electromagnetic 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/06—Magnetic or electromagnetic
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention provides an active and passive vibration damping supporting device for shafting transverse vibration transmission control, which comprises: the shaft body rotates to penetrate through a bearing seat, the bearing seat is installed on a base through a passive vibration isolator, the bearing seat is fixedly connected with two electromagnetic chucks at two horizontal ends respectively, the bearing seat is fixedly connected with one electromagnetic chuck at the lower end of the vertical direction, two horizontal electromagnetic bearings and two vertical electromagnetic bearings are fixedly installed on the base, the horizontal electromagnetic chucks are close to the horizontal electromagnetic bearings in alignment and installed, the vertical electromagnetic chucks are close to the vertical electromagnetic bearings in alignment and installed, and the vertical electromagnetic chucks are located between the two vertical electromagnetic bearings. The invention provides static supporting force for the bearing through the passive vibration isolator, provides transverse dynamic adjustment and control force through the active electromagnetic support, can actively adjust the horizontal and vertical positions of the shafting to ensure the shafting centering state, and can actively inhibit the transmission of the transverse excitation of the propeller to the ship body through the shaft and the base thereof.
Description
Technical Field
The invention relates to the technical field of ship vibration reduction and noise reduction, in particular to an active and passive vibration reduction supporting device for shafting transverse vibration transmission control.
Background
In the era of economic globalization, the utilization of ocean resources is more and more emphasized by countries in the world, and the advanced ship manufacturing level is an important guarantee for developing the ocean resources. When the ship sails on the water surface, the ship is a large and complex vibration noise source, and overlarge vibration noise can cause great damage to the surrounding environment and human bodies, such as damage to a ship body structure, damage to the hearing of crews, pollution to the marine environment, influence on growth and multiplication of fish resources and the like.
The main causes of the vibration noise of the ship are the following three aspects: firstly, when marine mechanical equipment such as a host, a gear box, a generator set, a propulsion shafting and the like works, vibration is transmitted to a hull structure through a base of the marine mechanical equipment to induce a hull to radiate noise underwater; secondly, the noise generated when the propeller rotates in the uneven wake field comprises rotation noise, turbulence noise, cavitation noise and the like; and thirdly, when the ship sails on the water surface, water flows through the surface of the ship body and noise generated by interaction of turbulent pulsating pressure and the structure of the ship body. And when the ship sails at low speed, the noise generated by the operation of mechanical equipment is the most main noise source.
In recent decades, the technologies of vibration isolation of the floating raft, blocking of vibration wave propagation by paving the mass block on the base, increase of vibration wave dissipation by paving the restraining damping layer and the like are applied, so that the transmission of the vibration of equipment such as a ship main engine, a gear box, a generator set and the like to a ship body is effectively inhibited. Through the schemes of the resonance converter, the distributed active vibration absorber, the electromagnetic active control device and the like, the longitudinal vibration of the propulsion shafting caused by the propeller exciting force is effectively controlled. On the basis, the problem of transverse vibration of the propulsion shafting begins to be highlighted. Therefore, the control of the transverse vibration transmission of the propulsion shafting can further reduce the vibration and the sound radiation of the ship body.
In chinese patent document No. CN107605941B, a ship shafting elastic damping vibration attenuation support structure is disclosed, which is characterized in that: the device comprises a supporting bearing sleeved outside a propulsion shaft, wherein an elastic damping part is sleeved outside the supporting bearing, the elastic damping part comprises vulcanized rubber, a liquid-filled leather bag is arranged in the vulcanized rubber, the liquid-filled leather bag is provided with an oil filling hole, an installation shell is sleeved outside the vulcanized rubber, end covers are arranged at two ends of the vulcanized rubber, and the end covers are fixedly connected with the installation shell.
At present, researches on shafting transverse vibration transmission control mainly focus on active electromagnetic vibration absorption, electromagnetic bearing vibration absorption and the like, but the methods cannot give consideration to broadband vibration absorption and low-frequency line spectrum control, and the existing vibration absorption measures need to be improved urgently.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide an active and passive vibration damping supporting device for shafting transverse vibration transmission control.
The invention provides an active and passive vibration damping supporting device for shafting transverse vibration transmission control, which comprises: the electromagnetic vibration isolator comprises a shaft body, a bearing seat, a horizontal electromagnetic chuck, a horizontal electromagnetic support, a vertical electromagnetic chuck, a vertical electromagnetic support, a passive vibration isolator and a base;
the axle body rotates and wears to establish in the bearing frame, the bearing frame is installed on the base through passive isolator, the bearing frame is at two electromagnetic chuck of horizontal both ends difference fixedly connected with, the bearing frame is at electromagnetic chuck of vertical lower extreme fixedly connected with, two horizontal electromagnetic bearing and two vertical electromagnetic bearing fixed mounting is on the base, horizontal electromagnetic chuck is close to the installation with horizontal electromagnetic bearing centering, vertical electromagnetic chuck is close to the installation with vertical electromagnetic bearing centering, just vertical electromagnetic chuck is located between two vertical electromagnetic bearing.
Preferably, the base is provided with a plurality of displacement sensors, and the plurality of displacement sensors respectively measure the relative displacement between the horizontal electromagnetic chuck and the base, and the relative displacement between the vertical electromagnetic chuck and the base.
Preferably, an acceleration sensor is mounted on the base and measures horizontal and vertical acceleration responses of the base.
Preferably, uniform air gaps are arranged between the horizontal electromagnetic bearing and the horizontal electromagnetic chuck and between the vertical electromagnetic bearing and the vertical electromagnetic chuck.
Preferably, the two horizontal electromagnetic bearings and the two horizontal electromagnetic chucks are installed in a centering mode, the center point of the installation is located at the same height with the center line of the shaft body, and the two vertical electromagnetic bearings and the vertical electromagnetic chucks are installed in a centering mode and are installed under the shaft body in a centering mode.
Preferably, the horizontal electromagnetic bearing and the vertical electromagnetic bearing are driven in a differential mode.
Preferably, the electromagnetic bearing comprises a plurality of groups of electromagnetic coils, and the plurality of groups of electromagnetic coils are distributed in a central symmetry manner.
Preferably, the base is provided with a number of displacement sensors corresponding to the number of the electromagnetic coils, and the displacement sensors are correspondingly arranged on the base along the distribution of the electromagnetic coils.
Preferably, the electromagnetic bearing device further comprises a control system, and the control system is connected with the horizontal electromagnetic bearing, the vertical electromagnetic bearing, the displacement sensor and the acceleration sensor.
Preferably, the horizontal electromagnetic support and the vertical electromagnetic support both adopt non-contact electromagnetic actuators.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides static supporting force for the bearing through the passive vibration isolator, provides transverse dynamic adjustment and control force through the active electromagnetic support, can actively adjust the horizontal and vertical positions of the shafting to ensure the shafting centering state, and can actively inhibit the transmission of the transverse excitation of the propeller to the ship body through the shaft and the base thereof.
2. The invention aims at reducing the vibration noise of the ship body caused by the transverse excitation of the propeller through the shafting, and has the advantages of both broadband vibration reduction and line spectrum control;
3. compared with other active elements, the non-contact electromagnetic actuator has the advantages of high response speed, uniform thrust, stable motion, reliable work and the like, and can effectively inhibit the transmission of the transverse excitation of the propeller to the ship body through the bearing.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic overall structure diagram of an active and passive vibration damping support device for shafting lateral vibration transmission control according to an embodiment of the present invention;
FIG. 2 is a front sectional view of an active and passive vibration damping support device for controlling the transmission of lateral vibration of a shafting according to an embodiment of the present invention;
FIG. 3 is a structural plan view of an active and passive vibration damping support device for controlling the transmission of lateral vibration of a shafting according to an embodiment of the present invention;
FIG. 4 is a control schematic diagram of the active and passive vibration damping support device for shafting lateral vibration transmission control according to the embodiment of the present invention.
Description of reference numerals:
vertical electromagnetic bearing 5 of shaft body 1
Horizontal electromagnetic chuck 4 base 8
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention discloses an active and passive vibration reduction supporting device for shafting transverse vibration transmission control, which comprises a shaft body 1, a bearing seat 2, a horizontal electromagnetic chuck 4, a horizontal electromagnetic support 3, a vertical electromagnetic chuck 6, a vertical electromagnetic support 5, a passive vibration isolator 7 and a base 8. The shaft body 1 rotates to penetrate through the bearing seat 2, the two ends of the shaft body 1 on the bearing seat 2 are installed on the base 8 through the passive vibration isolators 7, the two ends of the passive vibration isolators 7 are connected with the bearing seat 2 and the base 8 through threads, and the passive vibration isolators 7 provide static supporting force for the bearing seat 2.
Two horizontal electromagnetic chucks 4 are fixedly connected with two horizontal electromagnetic chucks at two horizontal ends of a bearing pedestal 2 through threads respectively, a vertical electromagnetic chuck 6 is fixedly connected with the vertical lower end of the bearing pedestal 2 through threads, two horizontal electromagnetic bearings 3 and two vertical electromagnetic bearings 5 are fixedly connected with a base 8 through threads, wherein the two horizontal electromagnetic bearings 3 and the two horizontal electromagnetic chucks 4 are installed in a centering way, and the centering point position of installation and the central line of a shaft body 1 are positioned at the same height. The vertical electromagnetic chuck 6 and the two vertical electromagnetic bearings 5 are installed in a centering mode, the vertical electromagnetic chuck 6 is located between the two vertical electromagnetic bearings 5, and the vertical electromagnetic chuck is installed under the shaft body 1 in a centering mode. Uniform air gaps are arranged between the horizontal electromagnetic chuck 4 and the horizontal electromagnetic support 3 and between the vertical electromagnetic chuck 6 and the vertical electromagnetic support 5 so as to generate electromagnetic constraint force, and the size of the air gaps is determined according to the required electromagnetic force.
The transverse electromagnetic bearing and the vertical electromagnetic bearing 5 both adopt non-contact electromagnetic actuators, compared with other active elements, the propeller transverse excitation control device has the advantages of high response speed, uniform thrust, stable motion, reliable work and the like, and can effectively inhibit the transmission of the propeller transverse excitation to a ship body through the bearing seat 2.
Install a plurality of displacement sensor on base 8, displacement sensor's quantity can be two in this embodiment, a relative displacement who is used for measuring horizontal electromagnetic chuck 4 and base 8, another relative displacement who is used for measuring vertical electromagnetic chuck 6 and base 8, horizontal electromagnetic bearing 3 and vertical electromagnetic bearing 5 respectively with differential mode work, real-time adjustment horizontal electromagnetic chuck 4 and vertical electromagnetic chuck 6's position. Two acceleration sensors are mounted on the base 8 for measuring the horizontal and vertical acceleration responses of the base 8, respectively. The device also comprises a control system, wherein the control system is connected with the horizontal electromagnetic bearing 3, the vertical electromagnetic bearing 5, the displacement sensor and the acceleration sensor, the acceleration sensor feeds back to the control system in real time, the control system generates a control signal and outputs the control signal to the corresponding power amplifier so as to drive the horizontal electromagnetic bearing 3 and the vertical electromagnetic bearing 5 to generate a control force, and the transverse vibration transmission of the shaft body 1 is controlled in real time. The real-time feedback control system of displacement sensor and acceleration sensor, control system adopt differential mode drive horizontal electromagnetic bearing 3 and vertical electromagnetic bearing 5 to reduce axle body 1 and pass through bearing frame 2 transmission vibration.
A set of electromagnetic coils is embedded in each horizontal electromagnetic bearing 3 and each vertical electromagnetic bearing 5, so that non-contact electromagnetic attraction force is generated on the horizontal electromagnetic chuck 4 or the vertical electromagnetic chuck 6. In practice, a plurality of groups of electromagnetic coils, such as four groups distributed in central symmetry, can be embedded in each of the horizontal electromagnetic bearing 3 and the vertical electromagnetic bearing 5 to adjust the position of the electromagnetic chuck in real time. The arrangement of the multiple groups of electromagnetic coils can enable the position adjustment of the electromagnetic chuck to be more accurate.
Similarly, if four sets of electromagnetic coils are embedded in each horizontal electromagnetic bearing 3 or vertical electromagnetic bearing 5, four displacement sensors are arranged near one horizontal electromagnetic chuck 4 to measure the relative displacement between the position of the horizontal electromagnetic chuck 4 corresponding to the electromagnetic coil and the base 8. Four displacement sensors are arranged near the vertical electromagnetic chuck 6 and used for respectively measuring the relative displacement between the position, corresponding to the electromagnetic coil, on the vertical electromagnetic chuck 6 and the base 8.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An active and passive vibration damping support device for shafting transverse vibration transmission control, comprising: the device comprises a shaft body (1), a bearing seat (2), a horizontal electromagnetic chuck (4), a horizontal electromagnetic support (3), a vertical electromagnetic chuck (6), a vertical electromagnetic support (5), a passive vibration isolator (7) and a base (8);
the utility model discloses a bearing structure, including axle body (1), bearing frame (2) are installed on base (8) through passive isolator (7), two electromagnet of bearing frame (2) fixedly connected with respectively at horizontal both ends, electromagnet of bearing frame (2) at vertical lower extreme fixedly connected with, two horizontal electromagnetic bearing (3) and two vertical electromagnetic bearing (5) fixed mounting is on base (8), horizontal electromagnet (4) are close to the installation with horizontal electromagnetic bearing (3) centering, vertical electromagnet (6) are close to the installation with vertical electromagnetic bearing (5) centering, just vertical electromagnet (6) are located between two vertical electromagnetic bearing (5).
2. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: the base (8) is provided with a plurality of displacement sensors, and the displacement sensors measure the relative displacement of the horizontal electromagnetic chuck (4), the vertical electromagnetic chuck (6) and the base (8) respectively.
3. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: and an acceleration sensor is arranged on the base (8), and the acceleration sensor measures the horizontal and vertical acceleration response of the base (8).
4. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: and uniform air gaps are arranged between the horizontal electromagnetic bearing (3) and the horizontal electromagnetic chuck (4) and between the vertical electromagnetic bearing (5) and the vertical electromagnetic chuck (6).
5. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: two horizontal electromagnetic bearings (3) and two horizontal electromagnetic chuck (4) centering installation, and the centering point position of installation is located same height with the central line of axle body (1), two vertical electromagnetic bearings (5) with vertical electromagnetic chuck (6) centering installation, and the centering is installed under axle body (1).
6. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: the horizontal electromagnetic bearing (3) and the vertical electromagnetic bearing (5) are driven in a differential mode.
7. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: the electromagnetic bearing comprises a plurality of groups of electromagnetic coils which are distributed in a central symmetry mode.
8. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 7, wherein: the base (8) is provided with displacement sensors with the number corresponding to that of the electromagnetic coils, and the displacement sensors are correspondingly arranged on the base (8) along the distribution of the electromagnetic coils.
9. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: the device also comprises a control system, and the control system is connected with the horizontal electromagnetic support (3), the vertical electromagnetic support (5), the displacement sensor and the acceleration sensor.
10. The active and passive vibration damping support device for shafting transverse vibration transmission control as claimed in claim 1, wherein: the horizontal electromagnetic support (3) and the vertical electromagnetic support (5) both adopt non-contact electromagnetic actuators.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110970383.5A CN113653759B (en) | 2021-08-23 | 2021-08-23 | Active and passive vibration reduction supporting device for shafting transverse vibration transmission control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110970383.5A CN113653759B (en) | 2021-08-23 | 2021-08-23 | Active and passive vibration reduction supporting device for shafting transverse vibration transmission control |
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| CN113653759A true CN113653759A (en) | 2021-11-16 |
| CN113653759B CN113653759B (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110970383.5A Active CN113653759B (en) | 2021-08-23 | 2021-08-23 | Active and passive vibration reduction supporting device for shafting transverse vibration transmission control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962538A (en) * | 2022-06-22 | 2022-08-30 | 招商局金陵船舶(江苏)有限公司 | Shaft system vibration damping structure and vibration damping method for roll-on-roll-off ship |
| CN115325088A (en) * | 2022-07-26 | 2022-11-11 | 中国舰船研究设计中心 | Active vibration damper for intermediate bearing of long shafting of ship |
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| US20070000741A1 (en) * | 2005-06-30 | 2007-01-04 | Pribonic Edward M | Axial rotary eddy current brake with adjustable braking force |
| CN107165937A (en) * | 2017-04-21 | 2017-09-15 | 燕山大学 | A kind of journal bearing of the dual supporting of electromagnetism static pressure |
| CN110243604A (en) * | 2019-07-17 | 2019-09-17 | 大连工业大学 | A kind of intershaft bearing vibration testing device |
| CN111975690A (en) * | 2020-08-13 | 2020-11-24 | 苏州莱锦机电自动化有限公司 | Centering auxiliary device for electromechanical equipment installation |
| CN113153962A (en) * | 2021-04-20 | 2021-07-23 | 上海交通大学 | Electromagnetic vibration reduction thrust bearing for controlling longitudinal vibration of shafting |
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2021
- 2021-08-23 CN CN202110970383.5A patent/CN113653759B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070000741A1 (en) * | 2005-06-30 | 2007-01-04 | Pribonic Edward M | Axial rotary eddy current brake with adjustable braking force |
| CN107165937A (en) * | 2017-04-21 | 2017-09-15 | 燕山大学 | A kind of journal bearing of the dual supporting of electromagnetism static pressure |
| CN110243604A (en) * | 2019-07-17 | 2019-09-17 | 大连工业大学 | A kind of intershaft bearing vibration testing device |
| CN111975690A (en) * | 2020-08-13 | 2020-11-24 | 苏州莱锦机电自动化有限公司 | Centering auxiliary device for electromechanical equipment installation |
| CN113153962A (en) * | 2021-04-20 | 2021-07-23 | 上海交通大学 | Electromagnetic vibration reduction thrust bearing for controlling longitudinal vibration of shafting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962538A (en) * | 2022-06-22 | 2022-08-30 | 招商局金陵船舶(江苏)有限公司 | Shaft system vibration damping structure and vibration damping method for roll-on-roll-off ship |
| CN115325088A (en) * | 2022-07-26 | 2022-11-11 | 中国舰船研究设计中心 | Active vibration damper for intermediate bearing of long shafting of ship |
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| CN113653759B (en) | 2022-06-28 |
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