CN113417938A - Water-lubricated rubber alloy bearing device, friction self-excited vibration noise active inhibition system and method - Google Patents

Water-lubricated rubber alloy bearing device, friction self-excited vibration noise active inhibition system and method Download PDF

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CN113417938A
CN113417938A CN202110527037.XA CN202110527037A CN113417938A CN 113417938 A CN113417938 A CN 113417938A CN 202110527037 A CN202110527037 A CN 202110527037A CN 113417938 A CN113417938 A CN 113417938A
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water
bearing
lubricated
rubber alloy
rubber sleeve
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CN113417938B (en
Inventor
王家序
甘来
向果
韩彦峰
肖科
贾航
王成
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Chongqing Benteng Technology Co ltd
Chongqing University
Chongqing University of Science and Technology
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Chongqing Benteng Technology Co ltd
Chongqing University
Chongqing University of Science and Technology
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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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/02—Sliding-contact bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
    • B63H23/32—Other parts
    • B63H23/321—Bearings or seals specially adapted for propeller shafts
    • B63H23/326—Water lubricated bearings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C27/00—Elastic or yielding bearings or bearing supports, for exclusively rotary movement
    • F16C27/06—Elastic or yielding bearings or bearing supports, for exclusively rotary movement by means of parts of rubber or like materials
    • F16C27/063—Sliding contact bearings
    • 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
    • F16N—LUBRICATING
    • F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
    • F16N15/04—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions with water
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
    • G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/30—Ships, e.g. propelling shafts and bearings therefor
    • 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
    • F16N—LUBRICATING
    • F16N2210/00—Applications
    • F16N2210/14—Bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Support Of The Bearing (AREA)

Abstract

The invention discloses a water-lubricated rubber alloy bearing device, a friction self-excited vibration noise active suppression system and a friction self-excited vibration noise active suppression method. According to the invention, the supporting rigidity is adjusted by arranging the metal rubber sleeve between the water-lubricated rubber alloy bearing and the bearing seat, the deformation and rigidity of the metal rubber sleeve are adjusted by using the driving mechanism, the bearing state is monitored in real time by the sensor, the bearing signal is acquired to form an active control strategy, and the deformation of the metal rubber sleeve is actively controlled to adjust the supporting rigidity of the metal rubber sleeve on the water-lubricated rubber alloy bearing, so that the function of actively inhibiting the friction self-excited vibration noise of the water-lubricated rubber alloy bearing from a noise source is achieved.

Description

Water-lubricated rubber alloy bearing device, friction self-excited vibration noise active inhibition system and method
Technical Field
The invention relates to the technical field of water-lubricated rubber alloy bearings, in particular to a water-lubricated rubber alloy bearing device, a friction self-excited vibration noise active suppression system and a friction self-excited vibration noise active suppression method.
Background
Currently, water lubricated rubber alloy bearings are widely used in the power propulsion systems of underwater vehicles. With the continuous development of the environment-friendly and resource-saving green intelligent industry, the requirements of high-end equipment transmission systems on noise reduction and environmental protection technologies are increasingly urgent. The noise of the underwater propulsion system is mainly generated by the friction self-excited vibration phenomenon of the surface of the water lubrication bearing. In the rotating process of the rotating shaft, the rotating shaft and the rubber alloy surface of the water lubrication rubber alloy bearing are in friction, the generated multi-frequency spectrum noise is high in intensity, long in radiation distance and high in frequency, is easy to detect by sonar, seriously threatens the concealment and underwater survival capability of an underwater vehicle, and influences the living environment of underwater organisms. Therefore, the inhibition of the friction self-excited vibration noise generated by the water lubrication rubber alloy bearing has important significance for shortening the combat radius of the underwater vehicle and improving the combat capability of the underwater vehicle. In the prior art, noise is only suppressed from the outside by using a silencing material and underwater acoustic countermeasure equipment, because the working environment of an underwater propulsion system is complicated and severe and is often influenced by underwater silt impurities, the intensity and amplitude of a sound field of the noise of the whole transmission system are often changed after a water-lubricated rubber alloy bearing is worn, the pre-used underwater acoustic countermeasure equipment cannot rapidly perform noise suppression adjustment in real time on line, and the noise suppression effect is poor; secondly, the prior art carries out noise suppression through an external means, does not control the noise suppression through a noise source, and is difficult to ensure noise leakage. Therefore, the prior art that can suppress part of underwater noise has the following problems:
1. in the prior art, the suppression of the friction self-excited vibration noise of the water-lubricated rubber alloy bearing is mainly realized by sound countermeasure equipment, the noise suppression effect is easily influenced by changeable severe working environments, and the noise suppression method belongs to a passive control strategy and has a limited effect;
2. in the prior art, a water-lubricated rubber alloy bearing is directly arranged on a bearing seat, the friction self-excited vibration noise on the surface of the water-lubricated rubber is directly transmitted to the outside of an underwater vehicle through the bearing seat, and the noise is very easy to leak under a passive control strategy;
3. in the prior art, the amplitude and the frequency of the water-lubricated rubber surface friction self-excited vibration noise are variable, and the control strategy adjustment aiming at the noise characteristics cannot be rapidly carried out on line in real time.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a water-lubricated rubber alloy bearing device, a friction self-excited vibration noise active suppression system and a friction self-excited vibration noise active suppression method.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to a first aspect of the present invention, the present invention provides a water-lubricated rubber alloy bearing device, which includes a water-lubricated rubber alloy bearing, a bearing seat sleeved outside the water-lubricated rubber alloy bearing, and a metal rubber sleeve, wherein the metal rubber sleeve is disposed between the water-lubricated rubber alloy bearing and the bearing seat, and one end of the metal rubber sleeve is provided with a driving mechanism for driving the metal rubber sleeve to deform so as to change the rigidity of the metal rubber sleeve.
By adopting the structure, the metal rubber material has the advantages of controllable deformation and adjustable rigidity, the metal rubber sleeve is additionally arranged between the water-lubricated rubber alloy bearing and the bearing seat to adjust the supporting rigidity, and the driving mechanism is adopted to drive the metal rubber sleeve to deform as required to actively adjust the supporting rigidity of the metal rubber sleeve to the water-lubricated rubber alloy bearing, so that the buffering and vibration absorption effects are improved, and the friction self-excited vibration noise of the water-lubricated rubber alloy bearing is actively inhibited from a noise source.
Preferably, the driving mechanism is a giant magnetostrictive mechanism, the giant magnetostrictive mechanism comprises a fixed retainer ring and at least one giant magnetostrictive body, the fixed retainer ring is fixedly connected with the bearing seat, one end of the giant magnetostrictive body is fixedly connected to one side, close to the metal rubber sleeve, of the fixed retainer ring, the other end of the giant magnetostrictive body is fixedly connected with the other end of the metal rubber sleeve, and the giant magnetostrictive body is made of a giant magnetostrictive material.
By adopting the structure, the giant magnetostrictive body is made of the giant magnetostrictive material which has a great magnetostrictive coefficient, and the length and the volume of the giant magnetostrictive body can be greatly changed due to the change of the magnetization state at normal temperature, so that the giant magnetostrictive body can simply and effectively drive the metal rubber sleeve to stretch and deform, and the giant magnetostrictive metal rubber sleeve has the advantages of simple structure, low cost and good driving effect.
Preferably, the number of the giant magnetostrictive bodies is one, and the giant magnetostrictive body is cylindrical.
In this way, by providing the giant magnetostrictive body in a cylindrical shape, the stretching driving force applied to each portion in the circumferential direction of the metal rubber sleeve can be made uniform.
Preferably, the number of the giant magnetostrictors is multiple, the multiple giant magnetostrictors are uniformly arranged along the circumferential direction of the fixed check ring at intervals, and the giant magnetostrictors are arc-shaped and extend along the axial direction of the metal rubber sleeve.
Therefore, the plurality of giant magnetostrictors are circumferentially and dispersedly distributed and uniformly distributed, and each magnetostrictor drives the corresponding part of the metal rubber sleeve to stretch, so that different driving forces can be applied to different parts of the metal rubber sleeve according to needs, and the stretching deformation of different parts of the metal rubber sleeve can be regulated in a targeted manner under a complex working environment.
Preferably, the water-lubricated rubber alloy bearing is a radial-thrust integrated water-lubricated bearing.
Adopt and directly push away integral type water lubricated bearing, not only can cushion the radial float of pivot motion in-process, can also effectually avoid the axial float of pivot operation in-process, reduce friction, the wearing and tearing between pivot and bearing working face, make the pivot operation more steady, reliable to further suppress the noise from the source, improve the life and the work efficiency of bearing, practice thrift use cost.
Preferably, the water-lubricated rubber alloy bearing comprises a cylindrical shaft sleeve and a flange plate fixedly arranged at one end of the shaft sleeve, and the shaft sleeve is sleeved with the bearing seat;
a cylindrical radial bearing rubber alloy lining is fixedly bonded on the inner wall of the shaft sleeve, and an annular axial bearing rubber alloy lining is bonded on the outer side of the flange;
a plurality of first water channel grooves with arc-shaped cross sections and uniformly distributed along the circumferential direction are formed in the inner wall of the radial bearing rubber alloy lining, the first water channel grooves penetrate through the two axial ends of the radial bearing rubber alloy lining, and the surface of the radial bearing rubber alloy lining between the adjacent first water channel grooves is a radial bearing working surface;
a plurality of second water channel grooves are uniformly distributed along the circumferential direction on the outer side surface of the axial bearing rubber alloy lining, the second water channel grooves penetrate through the two radial ends of the axial bearing rubber alloy lining, and the surface of the axial bearing rubber alloy lining between the adjacent second water channel grooves is an axial bearing working surface;
the first water channel grooves and the second water channel grooves are arranged in a one-to-one correspondence mode.
Preferably, the water-lubricated rubber alloy bearing device further comprises a thrust disc, and the thrust disc is arranged outside the axial bearing rubber alloy lining. Therefore, the thrust disc can effectively reduce the axial movement of the water-lubricated rubber alloy bearing, and reduce the noise generation from the source.
According to a second aspect of the present invention, the present invention provides an active suppression system for friction self-excited vibration noise of a water-lubricated rubber alloy bearing device, comprising the water-lubricated rubber alloy bearing device of the first aspect of the present invention, further comprising a displacement sensor, an acceleration sensor, a main control unit and at least one feedback control unit, wherein signal output ends of the displacement sensor and the acceleration sensor are respectively connected with a signal input end of the main control unit, a first control output end of the main control unit is respectively connected with a control signal input end of the driving mechanism, a second control output end of the main control unit is respectively connected with a signal input end of the feedback control unit, signal output ends of the feedback control unit are connected with a control signal input end of the driving mechanism in a one-to-one correspondence manner, wherein,
the displacement sensor is embedded in the metal rubber sleeve and used for detecting the deformation of the metal rubber sleeve and transmitting the deformation to the main control unit;
the acceleration sensor is fixedly arranged at the end part of the water-lubricated rubber alloy bearing and is used for detecting a vibration acceleration signal of the water-lubricated rubber alloy bearing and transmitting the vibration acceleration signal to the main control unit;
the main control unit generates an active control signal according to the vibration acceleration signal acquired by the acceleration sensor to control the driving mechanism to drive the metal rubber sleeve to stretch and deform, and also generates a feedback control signal according to the deformation amount acquired by the displacement sensor to send the feedback control signal to the feedback control unit, so that the feedback control unit controls the driving mechanism to further finely adjust the deformation of the metal rubber sleeve based on a preset feedback control strategy.
The system monitors the vibration noise of the water-lubricated rubber alloy bearing and the service state of the metal rubber sleeve in real time by using the acceleration sensor and the displacement sensor, calculates and analyzes the vibration noise and sends an instruction to drive the driving mechanism to control the rigidity of the metal rubber sleeve according to the vibration noise and the service state, and actively inhibits the generation of the friction self-excited vibration noise of the water-lubricated rubber alloy bearing, so that the intelligent control of vibration control according to different running states of the bearing is realized.
According to a third aspect of the present invention, the present invention provides an active suppression method for friction self-excited vibration noise of a water-lubricated rubber alloy bearing device, which is applied to the active suppression system for friction self-excited vibration noise of the water-lubricated rubber alloy bearing device according to the second aspect of the present invention, wherein the method comprises the following steps:
s1, detecting a vibration acceleration signal of the water-lubricated rubber alloy bearing through an acceleration sensor;
s2, the main control unit calculates the rigidity K1 of the metal rubber sleeve which effectively reduces the friction self-excited vibration of the water lubrication rubber alloy bearing according to the vibration acceleration signal, and sends out an active control signal to control a driving mechanism to drive the metal rubber sleeve to stretch and deform;
s3, detecting the deformation X of the deformed metal rubber sleeve through a displacement sensor;
s4, the main control unit calculates the current rigidity K2 of the metal rubber sleeve according to the deformation X, if the absolute value of K1-K2/K1 is smaller than a preset error threshold value, the control adjustment is stopped, and if the absolute value of K1-K2/K1 is not smaller than the preset error threshold value, the step S5 is executed;
and S5, the main control unit generates a feedback control signal according to the deformation X acquired by the displacement sensor and sends the feedback control signal to the feedback control unit, so that the feedback control unit controls the driving mechanism to further finely adjust the deformation of the metal rubber sleeve based on a preset feedback control strategy, and the steps S3 and S4 are repeated until the absolute value K1-K2/K1 is smaller than a preset error threshold value, and the regulation is controlled to stop.
Preferably, in step S4, the metal rubber sleeve has a relationship between the rigidity K and the deformation amount X in the tensile and compressive states as follows:
Figure BDA0003066072410000071
wherein, KLRigidity in the stretched state, KDRigidity in the compressed state, EsIs the elastic modulus of the metal rubber, h is the spiral winding pitch of the metal rubber, d is the diameter of the metal wire, dsIs the thickness of the metal rubber, pMRIs the relative density of the metal rubber, X is the deformation of the metal rubber sleeve, L is the original length of the metal rubber sleeve, A1-E1Is the coefficient of influence of deformation X on each order of rigidity K in stretching, A1Is an influence coefficient of order 0, B1Is a first order coefficient of influence, C1Is an influence coefficient of order 2, D1Is a third order coefficient of influence, E1Is an influence coefficient of order 4, A2-E2Is the coefficient of influence of deformation X on each order of rigidity K in compression, A2Is an influence coefficient of order 0, B2Is a first order coefficient of influence, C2Is an influence coefficient of order 2, D2Is a third order coefficient of influence, E2Is a 4 th order influence coefficient.
According to the method, an active control strategy for adjusting the deformation and rigidity of the metal rubber sleeve is formed according to the vibration acceleration signal of the water-lubricated rubber alloy bearing and the deformation of the metal rubber sleeve, so that intelligent control of vibration control according to different running states of the bearing is realized.
The invention has the beneficial effects that:
the metal rubber sleeve is arranged between the water-lubricated rubber alloy bearing and the bearing seat to adjust the supporting rigidity, the driving mechanism is used for adjusting the deformation and the rigidity of the metal rubber sleeve, the state of the bearing is monitored in real time through the sensor, a bearing signal is collected to form an active control strategy, the metal rubber sleeve is actively controlled and adjusted to be deformed to adjust the supporting rigidity of the metal rubber sleeve on the water-lubricated rubber alloy bearing, and the function of actively inhibiting the friction self-excited vibration noise of the water-lubricated rubber alloy bearing from a noise source is achieved. Compared with the prior art that the underwater sound countermeasure equipment is used for carrying out passive suppression on friction self-excited vibration noise from the outside, the invention starts from a noise source, actively suppresses the friction self-excited vibration noise through the metal rubber sleeve in the bearing device, has better suppression effect, and can effectively reduce the noise leakage problem caused by the passive suppression noise.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic perspective view of a water-lubricated rubber alloy bearing device according to an embodiment of the present invention (a driving mechanism is not shown);
FIG. 2 is a right side view of FIG. 1;
FIG. 3 is a sectional view A-A of FIG. 2;
FIG. 4 is a schematic perspective view of a water-lubricated rubber alloy bearing according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a frictional self-excited vibration noise active suppression system of a water-lubricated rubber alloy bearing device according to an embodiment of the present invention;
fig. 6 is a flowchart of an active suppression method for friction self-excited vibration noise of a water-lubricated rubber alloy bearing device according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
As shown in fig. 1 to 5, the present invention provides a water-lubricated rubber alloy bearing device, which includes a water-lubricated rubber alloy bearing 1, a bearing seat 2 sleeved outside the water-lubricated rubber alloy bearing 1, and a metal rubber sleeve 3, wherein the metal rubber sleeve 3 is disposed between the water-lubricated rubber alloy bearing 1 and the bearing seat 2, and one end of the metal rubber sleeve 3 is provided with a driving mechanism 4 for driving the metal rubber sleeve 3 to deform so as to change the rigidity of the metal rubber sleeve 3.
Specifically, in the present embodiment, the metal rubber sleeve 3 is formed by press vulcanization from a polymer rubber alloy elastomer.
In the embodiment, the advantages of controllable deformation and adjustable rigidity of the metal rubber material are utilized, the metal rubber sleeve 3 is additionally arranged between the water-lubricated rubber alloy bearing 1 and the bearing seat 2 to adjust the supporting rigidity, the driving mechanism 4 is adopted to drive the metal rubber sleeve 3 to deform as required to actively adjust the supporting rigidity, the buffering and vibration absorption effects are further improved, and therefore the friction self-excited vibration noise of the water-lubricated bearing rubber alloy bearing is actively inhibited from a noise source.
Specifically, in the present embodiment, after the metal rubber sleeve 3 is installed, interference fits are formed between the inner wall of the metal rubber sleeve 3 and the outer wall of the water-lubricated rubber alloy bearing 1, and between the outer wall of the metal rubber sleeve 3 and the inner wall of the bearing seat 2.
In one embodiment, as shown in fig. 5, the driving mechanism 4 is a giant magnetostrictive mechanism, the giant magnetostrictive mechanism includes a fixed retaining ring 41 and at least one giant magnetostrictive body 42, the fixed retaining ring 41 is fixedly connected with the bearing seat 2, one end of the giant magnetostrictive body 42 is fixedly connected to one side of the fixed retaining ring 41 close to the metal rubber sleeve 3, the other end of the giant magnetostrictive body 42 is fixedly connected with the other end of the metal rubber sleeve 3, and the giant magnetostrictive body 42 is made of a giant magnetostrictive material. In this embodiment, it is preferable that a plurality of the giant magnetostrictive bodies 42 are provided, the plurality of giant magnetostrictive bodies 42 are arranged at regular intervals in the circumferential direction of the fixed retainer 41, and the giant magnetostrictive body 42 is arc-shaped and extends in the axial direction of the metal rubber sleeve 3.
Because the giant magnetostrictive body 42 is made of giant magnetostrictive material, and the giant magnetostrictive material has a very large magnetostrictive coefficient, the length and the volume of the giant magnetostrictive body can be greatly changed due to the change of the magnetization state at normal temperature, and therefore, the giant magnetostrictive body 42 can simply and effectively drive the metal rubber sleeve 3 to stretch and deform, and has the advantages of simple structure, low cost and good driving effect. A plurality of giant magnetostrictors 42 are circumferentially and dispersedly distributed and uniformly distributed, and each magnetostrictor drives the corresponding part of the metal rubber sleeve 3 to stretch, so that different driving forces can be applied to different parts of the metal rubber sleeve 3 according to needs, and the stretching deformation of different parts of the metal rubber sleeve 3 can be adjusted in a targeted manner under a complex working environment.
In other embodiments, there is one giant magnetostrictive body 42, and the giant magnetostrictive body 42 has a cylindrical shape.
In one embodiment, as shown in fig. 1-5, the water-lubricated rubber alloy bearing 1 is a radial-thrust integrated water-lubricated bearing. Adopt and directly push away integral type water lubricated bearing, not only can cushion the radial float of 6 motion in-process of pivot, can also effectually avoid the pivot 6 axial float of operation in-process, reduce friction, the wearing and tearing between pivot 6 and bearing working face, make pivot 6 operate more steadily, reliably to further noise suppression from the source improves the life and the work efficiency of bearing, practices thrift use cost.
In this embodiment, a specific structure of the radial-thrust integrated water-lubricated bearing is shown in fig. 5, and includes a cylindrical shaft sleeve 11 and a flange 12 fixedly disposed at one end of the shaft sleeve 11; a cylindrical radial bearing rubber alloy lining 13 is fixedly bonded on the inner wall of the shaft sleeve 11, and a ring-shaped axial bearing rubber alloy lining 14 is bonded on the outer side of the flange 12; the radial bearing rubber alloy lining 13 can buffer the radial play of the rotating shaft 6 in the moving process, and the axial bearing rubber alloy lining 14 can effectively avoid the axial play of the rotating shaft 6 in the running process, so that the play of the rotating shaft 6 can be effectively reduced in the radial direction and the axial direction, and the self-excited friction vibration noise is reduced.
As shown in fig. 5, a plurality of first water channel grooves 15, the cross section of which is arc-shaped and which are uniformly distributed along the circumferential direction, are formed in the inner wall of the radial bearing rubber alloy lining 13, the first water channel grooves 15 penetrate through both axial ends of the radial bearing rubber alloy lining 13, and the surface of the radial bearing rubber alloy lining 13 between the adjacent first water channel grooves 15 is a radial bearing working surface 17; a plurality of second water channel grooves 16 which are uniformly distributed along the circumferential direction are formed in the outer side surface of the axial bearing rubber alloy lining 14, the second water channel grooves 16 penetrate through the two radial ends of the axial bearing rubber alloy lining 14, and the surface of the axial bearing rubber alloy lining 14 between the adjacent second water channel grooves 16 is an axial bearing working surface 18; first water channel groove 15 and second water channel groove 16 are used for the lubricated water to pass through, and first water channel groove 15 sets up to the arc, is favorable to forming the water film, can make the bearing form a plurality of water films at the during operation through a plurality of first water channel grooves 15 and second water channel groove 16, reaches good lubricated effect.
As shown in fig. 5, preferably, the cross section of the radial bearing working surface 17 is a concave arc, the radial bearing working surface 17 and the first water channel grooves 15 located at both sides thereof are in smooth transition, the axial bearing working surface 18 is a plane, the axial bearing working surface 18 and the second water channel grooves 16 located at both sides thereof are in smooth transition, the curved surface of the radial bearing working surface 17 and the curved surfaces in smooth transition at each position are easier to form elastic fluid dynamic pressure lubrication, a water film support is formed between the transmission shaft and the bearing, and drainage of silt and impurities is facilitated, so that friction between the bearing and the rotating shaft 6 is reduced, generation of friction self-excited vibration noise is reduced, abrasion of the working surface is reduced, and the service life of the bearing is prolonged.
As shown in fig. 5, the first water channel grooves 15 and the second water channel grooves 16 are provided in a one-to-one correspondence, which facilitates the drainage of silt and impurities and reduces friction between the bearing and the rotating shaft 6.
As shown in fig. 5, the first and second water channel grooves 15 and 16 are straight grooves, and the straight grooves are simply formed, so that the manufacturing cost of the bearing can be reduced.
In other embodiments, the first water channel groove 15 and the second water channel groove 16 can be designed into spiral grooves, and the first water channel groove 15 and the second water channel groove 16 can introduce lubricating water and bring silt in the lubricating water into the bearing, so that the design of the spiral grooves is beneficial to bearing sand discharge, the abrasion of the working surface of the bearing is reduced, the service life of the bearing is prolonged, and the use cost is saved.
In one embodiment, as shown in fig. 1, 2, 3 and 5, the water lubricated rubber alloy bearing device further comprises a thrust disc 5, the thrust disc 5 being disposed outside the axially bearing rubber alloy liner 14. The thrust disc 5 can effectively reduce the axial movement of the water-lubricated rubber alloy bearing 1, and reduce the noise generation from the source.
As shown in fig. 5, an embodiment of the present invention further provides an active friction self-excited vibration noise suppression system for a water-lubricated rubber alloy bearing device, which includes the water-lubricated rubber alloy bearing device in any one of the above embodiments of the present invention, and further includes a displacement sensor 100, an acceleration sensor 200, a main control unit 300, and at least one feedback control unit 400, wherein signal output terminals of the displacement sensor 100 and the acceleration sensor 200 are respectively connected to a signal input terminal of the main control unit 300, a first control output terminal of the main control unit 300 is respectively connected to a control signal input terminal of the driving mechanism 4, a second control output terminal of the main control unit 300 is respectively connected to a signal input terminal of the feedback control unit 400, signal output terminals of the feedback control unit 400 are connected to control signal input terminals of the driving mechanism 4 in a one-to-one correspondence manner, wherein,
the displacement sensor 100 is embedded in the metal rubber sleeve 3, and is used for detecting the deformation of the metal rubber sleeve 3 and transmitting the deformation to the main control unit 300;
the acceleration sensor 200 is fixedly installed at the end of the water-lubricated rubber alloy bearing 1, and is used for detecting a vibration acceleration signal of the water-lubricated rubber alloy bearing 1 and transmitting the vibration acceleration signal to the main control unit 300;
the main control unit 300 generates an active control signal according to the vibration acceleration signal collected by the acceleration sensor 200 to control the driving mechanism 4 to drive the metal rubber sleeve 3 to stretch and deform, and also generates a feedback control signal according to the deformation quantity collected by the displacement sensor 100 to send the feedback control signal to the feedback control unit 400, so that the feedback control unit 400 controls the driving mechanism 4 to further finely adjust the deformation of the metal rubber sleeve 3 based on a preset feedback control strategy.
Specifically, in the present embodiment, the acceleration sensor 200 is a three-way acceleration sensor capable of detecting acceleration vibration signals of the water-lubricated rubber alloy bearing 1 in three directions of the X, Y, Z axis, and the displacement sensor 100 is a three-way displacement sensor capable of detecting displacement amounts of the metal rubber sleeve 3 in three directions of the X, Y, Z axis.
The working principle of the system is as follows:
the vibration noise of the water-lubricated rubber alloy bearing 1 and the service state of the metal rubber sleeve 3 are monitored in real time by using the acceleration sensor 200 and the displacement sensor 100, and then the vibration noise and the service state of the metal rubber sleeve 3 are calculated, analyzed and sent out by the main control unit 300 according to the monitored vibration noise and the service state, the driving mechanism 4 is driven to control the rigidity of the metal rubber sleeve 3, the generation of the friction self-excitation vibration noise of the water-lubricated rubber alloy bearing 1 is actively inhibited, and therefore the intelligent control of vibration control according to different running states of the bearing is realized.
As shown in fig. 6, an embodiment of the present invention further provides an active suppression method for friction self-excited vibration noise of a water-lubricated rubber alloy bearing device, which is applied to the active suppression system for friction self-excited vibration noise of a water-lubricated rubber alloy bearing device in the above embodiment of the present invention, and the method may include the following steps:
s1, detecting a vibration acceleration signal of the water-lubricated rubber alloy bearing through an acceleration sensor;
s2, the main control unit calculates the rigidity K1 of the metal rubber sleeve which effectively reduces the friction self-excited vibration of the water lubrication rubber alloy bearing according to the vibration acceleration signal, and sends out an active control signal to control the driving mechanism to drive the metal rubber sleeve to stretch and deform;
s3, detecting the deformation X of the deformed metal rubber sleeve through a displacement sensor;
s4, the main control unit calculates the rigidity K2 of the current metal rubber sleeve according to the deformation X, if the absolute value of K1-K2/K1 is smaller than a preset error threshold value, the control and the adjustment are stopped, and if the absolute value of K1-K2/K1 is not smaller than the preset error threshold value, the step S5 is executed;
and S5, the main control unit generates a feedback control signal according to the deformation X acquired by the displacement sensor and sends the feedback control signal to the feedback control unit, so that the feedback control unit controls the driving mechanism to further finely adjust the deformation of the metal rubber sleeve based on a preset feedback control strategy, and the steps S3 and S4 are repeated until the absolute value K1-K2/K1 is smaller than a preset error threshold value, and the regulation is controlled to stop.
The preset error threshold may be specifically set according to experimental data and actual needs, and in this embodiment, the preset error threshold is 5%.
In one embodiment, in step S4, the stiffness K of the metal-rubber sleeve in tension and compression is related to the deformation X as follows:
Figure BDA0003066072410000161
wherein, KLRigidity in the stretched state, KDRigidity in the compressed state, EsIs the elastic modulus of the metal rubber, h is the spiral winding pitch of the metal rubber, d is the diameter of the metal wire, dsIs the thickness of the metal rubber, pMRIs the relative density of the metal rubber, X is the deformation of the metal rubber sleeve, L is the original length of the metal rubber sleeve, A1-E1Is the coefficient of influence of deformation X on each order of rigidity K in stretching, A1Is an influence coefficient of order 0, B1Is a first order coefficient of influence, C1Is an influence coefficient of order 2, D1Is a third order coefficient of influence, E1Is an influence coefficient of order 4, A2-E2Is the coefficient of influence of deformation X on each order of rigidity K in compression, A2Is an influence coefficient of order 0, B2Is a first order coefficient of influence, C2Is an influence coefficient of order 2, D2Is a third order coefficient of influence, E2Is a 4 th order influence coefficient.
According to the method, an active control strategy for adjusting the deformation and rigidity of the metal rubber sleeve is formed according to the vibration acceleration signal of the water-lubricated rubber alloy bearing and the deformation of the metal rubber sleeve, so that intelligent control of vibration control according to different running states of the bearing is realized.
In the description of the present invention, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. The utility model provides a water lubricated rubber alloy bearing device, includes water lubricated rubber alloy bearing and cover and locates the outer bearing frame of water lubricated rubber alloy bearing, its characterized in that:
still include the metal rubber sleeve, the metal rubber sleeve set up in the water lubricated rubber alloy bearing with between the bearing frame, the one end of metal rubber sleeve is equipped with and is used for the drive the metal rubber sleeve warp in order to change the actuating mechanism of metal rubber sleeve rigidity.
2. The water-lubricated rubber alloy bearing device according to claim 1, wherein:
the driving mechanism is a giant magnetostrictive mechanism, the giant magnetostrictive mechanism comprises a fixed retainer ring and at least one giant magnetostrictive body, the fixed retainer ring is fixedly connected with the bearing seat, one end of the giant magnetostrictive body is fixedly connected to one side, close to the metal rubber sleeve, of the fixed retainer ring, the other end of the giant magnetostrictive body is fixedly connected with the other end of the metal rubber sleeve, and the giant magnetostrictive body is made of a giant magnetostrictive material.
3. The water-lubricated rubber alloy bearing device according to claim 2, wherein:
the number of the giant magnetostriction bodies is one, and the giant magnetostriction bodies are cylindrical.
4. The water-lubricated rubber alloy bearing device according to claim 3, wherein:
the super magnetostriction bodies are arranged in a plurality of numbers, the plurality of super magnetostriction bodies are evenly arranged along the circumferential direction of the fixed retainer ring at intervals, and the super magnetostriction bodies are arc-shaped and extend along the axial direction of the metal rubber sleeve.
5. The water-lubricated rubber alloy bearing device according to any one of claims 1 to 4, wherein:
the water-lubricated rubber alloy bearing is a radial-thrust integrated water-lubricated bearing.
6. The water-lubricated rubber alloy bearing device according to claim 5, wherein:
the water lubricating rubber alloy bearing comprises a cylindrical shaft sleeve and a flange plate fixedly arranged at one end of the shaft sleeve, and the shaft sleeve is sleeved with the bearing block;
a cylindrical radial bearing rubber alloy lining is fixedly bonded on the inner wall of the shaft sleeve, and an annular axial bearing rubber alloy lining is bonded on the outer side of the flange;
a plurality of first water channel grooves with arc-shaped cross sections and uniformly distributed along the circumferential direction are formed in the inner wall of the radial bearing rubber alloy lining, the first water channel grooves penetrate through the two axial ends of the radial bearing rubber alloy lining, and the surface of the radial bearing rubber alloy lining between the adjacent first water channel grooves is a radial bearing working surface;
a plurality of second water channel grooves are uniformly distributed along the circumferential direction on the outer side surface of the axial bearing rubber alloy lining, the second water channel grooves penetrate through the two radial ends of the axial bearing rubber alloy lining, and the surface of the axial bearing rubber alloy lining between the adjacent second water channel grooves is an axial bearing working surface;
the first water channel grooves and the second water channel grooves are arranged in a one-to-one correspondence mode.
7. The water-lubricated rubber alloy bearing device according to claim 6, wherein:
the thrust disc is arranged on the outer side of the axial bearing rubber alloy lining.
8. A friction self-excited vibration noise active inhibition system of a water-lubricated rubber alloy bearing device is characterized in that:
a water-lubricated rubber alloy bearing device including any one of claims 1 to 7, further comprising:
the signal output ends of the displacement sensor and the acceleration sensor are respectively connected with the signal input end of the main control unit, the first control output end of the main control unit is respectively connected with the control signal input end of the driving mechanism, the second control output end of the main control unit is respectively connected with the signal input end of the feedback control unit, the signal output ends of the feedback control unit are correspondingly connected with the control signal input end of the driving mechanism one by one, wherein,
the displacement sensor is embedded in the metal rubber sleeve and used for detecting the deformation of the metal rubber sleeve and transmitting the deformation to the main control unit;
the acceleration sensor is fixedly arranged at the end part of the water-lubricated rubber alloy bearing and is used for detecting a vibration acceleration signal of the water-lubricated rubber alloy bearing and transmitting the vibration acceleration signal to the main control unit;
the main control unit generates an active control signal according to the vibration acceleration signal acquired by the acceleration sensor to control the driving mechanism to drive the metal rubber sleeve to stretch and deform, and also generates a feedback control signal according to the deformation amount acquired by the displacement sensor to send the feedback control signal to the feedback control unit, so that the feedback control unit controls the driving mechanism to further finely adjust the deformation of the metal rubber sleeve based on a preset feedback control strategy.
9. A friction self-excited vibration noise active inhibition method of a water-lubricated rubber alloy bearing device is characterized by comprising the following steps:
a frictional self-excited vibration noise active suppression system applied to the water-lubricated rubber alloy bearing device as recited in claim 8,
the method comprises the following steps:
s1, detecting a vibration acceleration signal of the water-lubricated rubber alloy bearing through an acceleration sensor;
s2, the main control unit calculates the rigidity K1 of the metal rubber sleeve which effectively reduces the friction self-excited vibration of the water lubrication rubber alloy bearing according to the vibration acceleration signal, and sends out an active control signal to control a driving mechanism to drive the metal rubber sleeve to stretch and deform;
s3, detecting the deformation X of the deformed metal rubber sleeve through a displacement sensor;
s4, the main control unit calculates the current rigidity K2 of the metal rubber sleeve according to the deformation X, if the absolute value of K1-K2/K1 is smaller than a preset error threshold value, the control adjustment is stopped, and if the absolute value of K1-K2/K1 is not smaller than the preset error threshold value, the step S5 is executed;
and S5, the main control unit generates a feedback control signal according to the deformation X acquired by the displacement sensor and sends the feedback control signal to the feedback control unit, so that the feedback control unit controls the driving mechanism to further finely adjust the deformation of the metal rubber sleeve based on a preset feedback control strategy, and the steps S3 and S4 are repeated until the absolute value K1-K2/K1 is smaller than a preset error threshold value, and the regulation is controlled to stop.
10. The method for actively suppressing frictional self-excited vibration noise of a water-lubricated rubber alloy bearing device according to claim 9, wherein:
in step S4, the relationship between the stiffness K and the deformation X of the metal rubber sleeve in the stretched and compressed states is as follows:
Figure FDA0003066072400000051
wherein, KLRigidity in the stretched state, KDRigidity in the compressed state, EsIs the elastic modulus of the metal rubber, h is the spiral winding pitch of the metal rubber, d is the diameter of the metal wire, dsIs the thickness of the metal rubber, pMRIs the relative density of the metal rubber, X is the deformation of the metal rubber sleeve, L is the original length of the metal rubber sleeve, A1-E1Is the coefficient of influence of deformation X on each order of rigidity K in stretching, A1Is an influence coefficient of order 0, B1Is a first order coefficient of influence, C1Is an influence coefficient of order 2, D1Is a third order coefficient of influence, E1Is an influence coefficient of order 4, A2-E2Is the coefficient of influence of deformation X on each order of rigidity K in compression, A2Is an influence coefficient of order 0, B2Is a first order coefficient of influence, C2Is an influence coefficient of order 2, D2Is a third order coefficient of influence, E2Is a 4 th order influence coefficient.
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CN1719058A (en) * 2005-08-05 2006-01-11 重庆大学 Water lubricating dynamic sealing rubber alloy bearing
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