CN202170929U - Resonance converter for marine thrust bearing - Google Patents
Resonance converter for marine thrust bearing Download PDFInfo
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- CN202170929U CN202170929U CN2011202552573U CN201120255257U CN202170929U CN 202170929 U CN202170929 U CN 202170929U CN 2011202552573 U CN2011202552573 U CN 2011202552573U CN 201120255257 U CN201120255257 U CN 201120255257U CN 202170929 U CN202170929 U CN 202170929U
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- bearing
- resonant vibration
- vibration converter
- plunger
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Abstract
The utility model discloses a resonance converter for a marine thrust bearing, which comprises a thrust bearing and a resonance converter connected with the thrust bearing, wherein a plurality of plunger cavities are uniformly distributed in a front end surface of the thrust bearing along the circumferential direction, a plunger is accommodated in each plunger cavity, one end of each plunger is in contact with a front thrust block of the thrust bearing, the other end of each plunger forms a gap with the corresponding plunger cavity, the gaps of the plunger cavities are communicated with each other and are filled with hydraulic oil, the resonance converter consists of a hydraulic pipe and an oil cylinder connected with each other, a balance oil cylinder is connected with the hydraulic pipe through a joint and is communicated with the oil cylinder of the resonance converter, longitudinal load of a propulsion shafting is conveyed to the plungers in contact with the propulsion shaft through the front thrust block, the plungers are driven to move by the longitudinal load, and then the load is acted on the hydraulic oil in the balance oil cylinder and the resonance converter so as to realize damping. The resonance converter for the marine thrust bearing solves the assembly problem of the resonance converter and the marine thrust bearing and has the advantages of flexibility in installation, convenience in control, high safety and small volume in practical application.
Description
Technical field
The utility model belongs to the passive type vibration damping equipment of marine propulsion shafting extensional vibration, is specifically related to a kind of thrust-bearing resonant vibration converter peculiar to vessel, is used to reduce marine propulsion shafting extensional vibration, to reduce the influence to marine shafting and hull structure.
Background technique
Marine propulsion shafting mainly is made up of devices such as propeller cavitation, stern tube shaft, jack shaft, sliding bearing, thrust axis, thrust-bearing, elastic coupling, speed change gear, diesel engine and axle system are auxiliary.The inhomogeneous wake of boats and ships stern field is the immediate cause that produces the vertical alternation impulse excitation in blade place power.Propeller cavitation alternation longitudinal force acts on hull with two kinds of forms usually, causes ship hull vibration and underwater radiation noise thereof, and a kind of is directly to be passed to hull surface through the stern fluid; Another kind is that the mode with bearing is passed to hull through marine shafting, thrust-bearing and pedestal thereof.Bearing is the main exciting force that causes ship hull vibration, is that the main quilt of propulsion shafting extensional vibration is subdued controlling object.
For the vibration of power equipment fatigue, wearing and tearing, hull stern vibration and the superstructure reasonably avoiding causing, be that longitudinal damping has been taked a series of measures to axle because of shafting longitudinal vibration.With reduce propulsion shafting extensional vibration be the vibration damping equipment of various ways of purpose by extensive concern and obtained corresponding scientific achievement, like Harbin Engineering University's research dynamic vibration absorber is installed at the thrust-bearing place and is reduced the submerged structure radiated noise that propulsion shafting extensional vibration causes; The National University of Defense technology carries out respectively based on dynamic vibration absorber and the research of phonon crystal propulsion shafting longitudinal damping theoretically; Shanghai Communications University develops electromagnetic type propulsion shafting extensional vibration active control device, is in parallel installed with the inertia actuation element shafting longitudinal vibration in the broad frequency band scope is had excellent control effect through fastening at jack shaft.
With fluid as the resonant vibration converter of working medium since model utility; The field of main utilization reduces marine shafting extensional vibration exactly; US3937534 discloses a kind of thrust-bearing resonant vibration converter; Mainly be in inside configuration hoop semicircle spring part to be set, having changed axle is that longitudinal rigidity reduces the shafting longitudinal vibration natural frequency.Only simply utilize the architecture advances of the principle completion thrust-bearing of resonant vibration converter in this structure, to the structural type of resonant vibration converter, control mode and whole problems such as assembling form do not set off a discussion; And after in a single day this structural design was confirmed, Control Shaft is that longitudinal rigidity and damping are comparatively difficult, and was improper to some extent to the design of problems such as easy disassembly and flexible adjustment.
Summary of the invention
The utility model is to the deficiency that exists in the above-mentioned background technology; A kind of thrust-bearing resonant vibration converter peculiar to vessel is proposed; Through improvement to traditional thrust bearing; Solve the installation question of resonant vibration converter, and realized the control enforcement and the mounting type of resonant vibration converter, in practice, had advantages such as flexible for installation, safe, that volume is little.
The technological scheme of the utility model is:
A kind of thrust-bearing resonant vibration converter peculiar to vessel comprises thrust-bearing and the resonant vibration converter that is connected with this thrust-bearing, wherein; Said thrust-bearing along circumferentially evenly being furnished with a plurality of plunger cavities, is equipped with plunger in each plunger cavity in its front cover, plunger one end contacts with the forward thrust piece; The other end forms the gap with corresponding plunger cavity, and each gap is interconnected and is full of hydraulic oil, forms balancing cylinder; Said resonant vibration converter is made up of interconnective hydraulic tube and oil cylinder; This balancing cylinder is connected to hydraulic tube through interface, thereby is communicated with the oil cylinder of resonant vibration converter, and the longitudinal loading of marine propulsion shafting is delivered on each plunger that is in contact with it through the forward thrust piece; Promote plunger motion loading in balancing cylinder and on the hydraulic oil in the resonant vibration converter, is realized vibration damping.
Further improvement as the utility model is with Sealing on the described plunger, so that hydraulic oil in the balancing cylinder and the lubricant oil in the thrust-bearing are isolated.
As the further improvement of the utility model, on the described front cover end face sealing cover is housed, the slit-shaped between sealing lid and the front cover becomes said gap.
As the further improvement of the utility model, curved of the end that said plunger contacts with the forward thrust piece.
As the further improvement of the utility model, the oil cylinder volume of said resonant vibration converter is adjustable.
As the further improvement of the utility model, the oil cylinder of said resonant vibration converter is a single-piston rod formula oil hydraulic cylinder.
As the further improvement of the utility model, the latus rectum of the hydraulic tube of said resonant vibration converter and length-adjustable.
As the further improvement of the utility model, said resonant vibration converter is a plurality of, and each resonant vibration converter is communicated with balancing cylinder through an interface.
The utility model is through carrying out integrated improvement design to traditional thrust bearing peculiar to vessel; Be full of the balancing cylinder of hydraulic oil in the inside configuration increase; Possesses the interface that installs resonant vibration converter additional; When satisfying passing shaft and be vertical static thrust and guaranteeing the normal navigation of boats and ships, on the propulsion shafting vibration transfer path, utilizing the inner hydraulic oil of resonant vibration converter to change axle is longitudinal rigidity and damping, reduces the extensional vibration energy transfer to hull; Reduce propulsion shafting extensional vibration amplitude, realize the reasonable control of vertical pulsating force.
The thrust-bearing of the utility model is a kind of improved thrust-bearing, comprises elements such as Thrust ring, thrust block pad, thrust block, bearing housing, front cover, rear end cover, bearing sleeve.For ease of lubricated and cooling, the thrust block pad end face is designed to plane area, beveled region and trench area.Plane area is used to install thrust block, and beveled region is convenient to form lubricant film, and trench area then provides the passage of lubricant oil circulation.Bearing sleeve is used for bearing radial load.The thrust-bearing frame also is designed with filler opening and oil outlet, is used for each interelement lubricated and cooling.
The resonant vibration converter of the utility model is made up of hydraulic tube and oil cylinder; Hydraulic tube connects the balancing cylinder of thrust-bearing and the oil cylinder of resonant vibration converter, and the number of resonant vibration converter can require corresponding adjustment and reasonable Arrangement according to the specific targets to propulsion shafting extensional vibration control simultaneously.The working volume of adjusting resonant vibration converter for convenience has designed the passive control system of resonant vibration converter to realize shafting longitudinal vibration control preferably in the utility model.
The utility model can move forward and backward a plurality of plungers along circumferentially evenly arranging in the vertical travel range that allows in the front cover of thrust-bearing; Design balance oil cylinder and be full of hydraulic oil behind plunger.To be longitudinal loading be passed to plunger and finally acted on the hydraulic oil in balancing cylinder and the resonant vibration converter by the forward thrust piece axle.On balancing cylinder, offer the independently hydraulic tube interface of vent hole, hydraulic oil outlet and resonant vibration converter.Vent hole is used to get rid of in-oil cylinder air, and the hydraulic oil outlet is used to change hydraulic oil and uses.
The utlity model has the remarkable advantage of following several respects:
Resonant vibration converter is realized the core parts of longitudinal damping function; The integrated design of thrust bearing simultaneously possesses the interface that vibration damping equipment is installed, and can realize the purpose to propulsion shafting extensional vibration control through the oil cylinder volume of change resonant vibration converter and the size of hydraulic tube.
It is the mode that longitudinal loading is transmitted that follow-on thrust-bearing does not change axle, and the reasonable control of vertical pulsating force is controlled to realize shafting longitudinal vibration.Follow-on thrust-bearing can be resonant vibration converter simultaneously provides a plurality of interfaces, after to this damping device structure parameter optimization design, can subdue a plurality of resonance peaks of shafting longitudinal vibration.
In safety Design, consider boats and ships under emergency work condition, when longitudinal loading was excessive, follow-on thrust-bearing can satisfy longitudinal loading stable delivery to thrust-bearing pedestal equally.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in detail.
Fig. 1 is the overall structure schematic representation of the utility model;
Fig. 2 (a) is the cut-away view of modified model thrust-bearing, and Fig. 2 (b) is the front cover structural drawing of modified model thrust-bearing, and Fig. 2 (c) is the right elevation of modified model thrust-bearing;
Fig. 3 (a) is the fundamental diagram of resonant vibration converter, and Fig. 3 (b) is the passive control system of resonant vibration converter;
Fig. 4 is a resonant vibration converter vibration damping test platform schematic representation;
Embodiment:
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to limit.
Be illustrated in figure 1 as a kind of thrust-bearing resonant vibration converter peculiar to vessel of the utility model, comprise follow-on thrust-bearing 1 and resonant vibration converter 2 compositions.
Shown in Fig. 2 (a), the main parts size of follow-on thrust-bearing 1 comprises thrust axis 3, Thrust ring 4, back thrust block pad 5, rear end cover 6, forward thrust piece 7, front cover 8 and bearing housing 9.For guaranteeing that axle is a thrust-bearing trouble free service and between thrust block pad and Thrust ring, form oil film in the rotary course, the rear end filler opening 10 that thrust-bearing lubricant oil is set respectively and oil outlet 11 are to satisfy the supplying lubricating oil that circulates in the thrust-bearing.
Compare the structural type of traditional thrust-bearing peculiar to vessel, improved main mode is in front cover 8, shown in Fig. 2 (b), all to have plunger 13 in each plunger cavity 12 by six plunger cavities 12 along circumferentially evenly arranging.According to the overall structure size of thrust-bearing, the number of plunger cavity 12 also can be designed to different numbers, not wait as eight, ten or 12.
Plunger 13 1 ends contact with forward thrust piece 7, and surface of contact is an arc shaped surface, this design can adjust because of axle be that longitudinal loading transmission on each plunger of causing of rotating eccentricity is longitudinally not parallel.
The other end of plunger 13 and corresponding plunger cavity 12 formation gaps, each gap are interconnected and are full of hydraulic oil, form balancing cylinder 14.Hydraulic oil is selected to be hydraulic oil, organic silicone oil, silica-based glue etc., needs in actual use to accomplish the dependency structure design according to various fluid viscosity coefficients.
On each plunger 13, be with lattice and enclose 15 with the hydraulic oil in the realization balancing cylinder and the isolation of thrust-bearing lubricant oil; Can consider equally also that in Seal Design the non-contact form is to reduce the influence of longitudinal frictional force.Consider restriction, accomplished the design of vertical stroke of plunger 13 because of the length travel allowable of marine shafting stern shaft seal.
When longitudinal loading is transmitted; Hydraulic oil in the balancing cylinder 14 need satisfy in particular pressure work, for guaranteeing the Security of work, sealing cover 16 is housed on the front cover end face; Arrange six bolts 17 along circumferentially even, and the prestressing force of calculating bolt is to guarantee that axle is a trouble free service.The number of bolt and model can be according to the adjustment of the operating pressure in the balancing cylinder 14.
Fig. 2 (c) is the right elevation of modified model thrust-bearing 1.The air vent 21 of hydraulic oil in the hydraulic oil oil outlet 20 and balancing cylinder is set respectively on thrust-bearing front cover 8 in the front end filler opening 19, balancing cylinder of interface 18, the thrust-bearing lubricant oil of resonant vibration converter 2.Wherein the interface 18 of resonant vibration converter 2 can be according to extensional vibration needs its quantity of adjustment and mounting point.
Fig. 3 (a) resonant vibration converter 2 mainly is made up of hydraulic tube 22 and oil cylinder 23.Balancing cylinder 14 in the thrust-bearing is connected to hydraulic tube 22 through interface 18; Thereby be communicated with the oil cylinder 23 of resonant vibration converter 2; The material selection copper pipe of hydraulic tube 22 also can adopt flexible pipe in the utility model, selects suitable hydraulic fitting 24 according to the latus rectum size of hydraulic tube 22 simultaneously.Oil cylinder 23 adopts columniform configuration design, accomplishes its wall thickness according to operating pressure and calculates.
Adjustable for the volume of realizing hydraulic oil in the oil cylinder 23, in oil cylinder 23, longitudinally arrange piston rod 25, with between the oil cylinder 23 through being threaded.Piston 26 is divided into oil cylinder 23 the buffering cavity 28 of resonant vibration converter working cavity 27 and resonant vibration converter.According to the vibration absorbing theory analysis, through the position of adjustment piston 26, reach the purpose of the volume that changes resonant vibration converter working cavity 27, the final control shafting longitudinal vibration rationally of realizing.
For guaranteeing the constancy of volume of resonant vibration converter working cavity 27, be completely fixed at this vibration damping equipment actual piston bar 25.According to the design of resonant vibration converter vibration attenuation mechanism, can select the hydraulic tube 22 of different latus rectums and length and the volume of working cavity 27 to realize optimum extensional vibration control.For the convenient volume that in resonant vibration converter 2, injects hydraulic oil and rationally transfer working cavity 27, on the working cavity 27 of oil cylinder 23, arrange oil transportation mouth 29 simultaneously.
The utility model is accomplished the modular design of thrust-bearing 1 and resonant vibration converter 2; For realizing vertical extensional vibration control; The working method of this device does; The lengthwise position of adjustment plunger 13 makes forward thrust piece 7 not contact with front cover 8, and this moment, axle was that the front and back of longitudinal loading bang path are Thrust ring 4, forward thrust piece 7, plunger 13, hydraulic oil, thrust bearing shell 9 in proper order.Vertically impulse excitation power will be effectively reduced by resonant vibration converter 2.
Consider the Security of thrust-bearing work simultaneously; When boats and ships are in that the emergency work condition longitudinal loading is excessive to cause balancing cylinder 14 or resonant vibration converter 2 operational failures; Forward thrust piece 7 will directly contact with front cover 8 at this moment; Same can satisfy be passed to thrust bearing shell 9 with longitudinal loading is inferior, guaranteed the safe navigation of boats and ships.
Be depicted as resonant vibration converter like Fig. 3 (b) and design passive hydraulic control system.The passive hydraulic control system of resonant vibration converter mainly is made up of manual pump 30, pressure gauge 31, one-way valve 32, relief valve 33 and shutoff valve 34.With shutoff valve 34 with can realize oiling after oil transportation mouth 29 on the oil cylinder 23 is connected, change the purposes such as volume of the working cavity of oil cylinder.
Fig. 4 is the integral installation reduced graph of the utility model on the vibration-testing platform.Be the longitudinal loading of simulation propeller for vessels, this Testing Platform hydraulic loading system 35 is realized quiet loading, and vibration exciter 36 is realized the vertically moving fluctuation pressure that loads with the simulation propeller cavitation of axle system.Motor 37 and gear-box 38 are used to change the rotating speed of transmission shaft 39.Through plunger 13 lengthwise positions in the adjustment thrust-bearing 1, under vertical loading of difference and different rotating speeds operating mode, the feasibilities of 2 pairs of control of resonant vibration converter shafting longitudinal vibration have been verified.
The utility model is realized propulsion shafting longitudinal damping function in the following manner: before on propulsion shafting, resonant vibration converter not being installed, vertically Thrust ring, thrust block pad, front cover, the bearing housing of impulse excitation in axle system, thrust-bearing is passed to the thrust-bearing pedestal.After resonant vibration converter is installed at the thrust-bearing place, on original vibration transfer path, increase fluid damping vibration damping link.Based on vibration attenuation mechanism analysis and parameter Optimization Analysis, behind the volume of the working cavity of appropriate design resonant vibration converter hydraulic tube size and oil cylinder, can realize control to the extensional vibration resonance peak.Resonant vibration converter is installed on the passage that axle is the longitudinal loading transmission with serial fashion, increases the longitudinal damping of propulsion shafting in the time of the longitudinal rigidity of change propulsion shafting, makes that too violent shafting longitudinal vibration is effectively controlled.
Claims (9)
1. thrust-bearing resonant vibration converter peculiar to vessel; Comprise thrust-bearing (1) and the resonant vibration converter (2) that is connected with this thrust-bearing (1); Wherein, said thrust-bearing (1) along circumferentially evenly being furnished with a plurality of plunger cavities (12), is equipped with plunger (13) in each plunger cavity (12) in its front cover (8); Plunger (13) one ends contact with the forward thrust piece (7) of thrust-bearing (1); The other end forms the gap with corresponding plunger cavity (12), and each plunger cavity (12) gap is interconnected and is full of hydraulic oil is arranged, and forms balancing cylinder (14); Said resonant vibration converter (2) is made up of interconnective hydraulic tube (22) and oil cylinder (23); This balancing cylinder (14) is connected to hydraulic tube (22) through interface (18), thereby is communicated with the oil cylinder (23) of resonant vibration converter (2), and the longitudinal loading of marine propulsion shafting is delivered on each plunger (13) that is in contact with it through forward thrust piece (7); Promote plunger (13) motion loading in balancing cylinder (14) and on the hydraulic oil in the resonant vibration converter (2), is realized vibration damping.
2. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 is characterized in that, is with Sealing (15) on the described plunger (13), so that hydraulic oil in the balancing cylinder (14) and the lubricant oil in the thrust-bearing (1) are isolated.
3. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that, on described front cover (8) end face sealing cover (16) is housed, and the slit-shaped between sealing lid (16) and the front cover (8) becomes said gap.
4. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that, curved of the end that said plunger (13) contacts with forward thrust piece (7).
5. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that the oil cylinder volume of said resonant vibration converter (2) is adjustable.
6. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that, the oil cylinder of said resonant vibration converter (2) is a single-piston rod formula oil hydraulic cylinder.
7. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that, the latus rectum and the length-adjustable of the hydraulic tube (22) of said resonant vibration converter (2).
8. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that said resonant vibration converter (2) is a plurality of, and each resonant vibration converter (2) is communicated with balancing cylinder (14) through an interface (18).
9. thrust-bearing resonant vibration converter peculiar to vessel according to claim 1 and 2 is characterized in that, said resonant vibration converter (2) is connected with hydraulic control system through the oil transportation mouth (29) on its oil cylinder (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202552573U CN202170929U (en) | 2011-07-19 | 2011-07-19 | Resonance converter for marine thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202552573U CN202170929U (en) | 2011-07-19 | 2011-07-19 | Resonance converter for marine thrust bearing |
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| Publication Number | Publication Date |
|---|---|
| CN202170929U true CN202170929U (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202552573U Expired - Fee Related CN202170929U (en) | 2011-07-19 | 2011-07-19 | Resonance converter for marine thrust bearing |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269218A (en) * | 2011-07-19 | 2011-12-07 | 华中科技大学 | Thrust bearing resonant converter for marine |
| CN103499582A (en) * | 2013-09-27 | 2014-01-08 | 首钢京唐钢铁联合有限责任公司 | Method for examining thrust pads of damping thrust bearing |
| CN105840313A (en) * | 2014-08-13 | 2016-08-10 | 安萨尔多能源公司 | Maintenance method and kit for a gas turbine electric power plant |
| CN109281926A (en) * | 2018-11-13 | 2019-01-29 | 中国舰船研究设计中心 | A kind of vibration damping thrust bearing with hydrostatic thrust Self-balancing |
| CN111425484A (en) * | 2020-04-17 | 2020-07-17 | 河海大学常州校区 | Oil cylinder tail end buffering device |
| CN112160988A (en) * | 2020-10-14 | 2021-01-01 | 湖南大学 | Squeeze film damper, thrust bearing using same and use method of thrust bearing |
| CN113494525A (en) * | 2021-07-22 | 2021-10-12 | 中国船舶重工集团公司第七一一研究所 | Thrust bearing |
-
2011
- 2011-07-19 CN CN2011202552573U patent/CN202170929U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102269218A (en) * | 2011-07-19 | 2011-12-07 | 华中科技大学 | Thrust bearing resonant converter for marine |
| CN103499582A (en) * | 2013-09-27 | 2014-01-08 | 首钢京唐钢铁联合有限责任公司 | Method for examining thrust pads of damping thrust bearing |
| CN103499582B (en) * | 2013-09-27 | 2015-11-25 | 首钢京唐钢铁联合有限责任公司 | A kind of thrust bearing shoe valve inspection method of damping thrust bearing |
| CN105840313A (en) * | 2014-08-13 | 2016-08-10 | 安萨尔多能源公司 | Maintenance method and kit for a gas turbine electric power plant |
| CN109281926A (en) * | 2018-11-13 | 2019-01-29 | 中国舰船研究设计中心 | A kind of vibration damping thrust bearing with hydrostatic thrust Self-balancing |
| CN111425484A (en) * | 2020-04-17 | 2020-07-17 | 河海大学常州校区 | Oil cylinder tail end buffering device |
| CN112160988A (en) * | 2020-10-14 | 2021-01-01 | 湖南大学 | Squeeze film damper, thrust bearing using same and use method of thrust bearing |
| CN112160988B (en) * | 2020-10-14 | 2021-12-24 | 湖南大学 | Squeeze film damper, thrust bearing using same and use method of thrust bearing |
| CN113494525A (en) * | 2021-07-22 | 2021-10-12 | 中国船舶重工集团公司第七一一研究所 | Thrust bearing |
| CN113494525B (en) * | 2021-07-22 | 2023-02-03 | 中国船舶集团有限公司第七一一研究所 | Thrust bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20130719 |