CN110219922A - A kind of high quiet low dynamic vibration isolator of boat diesel engine - Google Patents
A kind of high quiet low dynamic vibration isolator of boat diesel engine Download PDFInfo
- Publication number
- CN110219922A CN110219922A CN201910590741.2A CN201910590741A CN110219922A CN 110219922 A CN110219922 A CN 110219922A CN 201910590741 A CN201910590741 A CN 201910590741A CN 110219922 A CN110219922 A CN 110219922A
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- Prior art keywords
- vibration isolator
- diesel engine
- low dynamic
- dynamic vibration
- boat diesel
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- 230000003014 reinforcing effect Effects 0.000 claims description 25
- 230000000694 effects Effects 0.000 abstract description 11
- 238000002955 isolation Methods 0.000 abstract description 8
- 230000003068 static effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- F16F7/00—Vibration-dampers; Shock-absorbers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of high quiet low dynamic vibration isolators of boat diesel engine, it is related to vibration isolator field, including bottom case, the bottom case is mounted on the mounting blocks of marine main engine bottom, the inner top side of the bottom case is slidably fitted with loading plate, the guide rod being arranged symmetrically is fixedly connected at the top of the loading plate, the loading plate is slidably mounted on fixed block by guide rod, the fixed block is set as two, the mounting blocks are fixed between two fixed blocks, screw rod is plugged on the fixed block, the bottom wall of the bottom case offers the guide groove being arranged symmetrically.The present invention is cooperated using multiple groups spring, improve vibration isolation efficiency, it is excessive to can effectively prevent vibration isolator quiet deformation while bearing higher load, vibration isolating effect is good, reduce the resonant frequency of boat diesel engine vibration isolator, it can guarantee marine main engine stability simultaneously, be effectively improved low frequency vibration isolation effect.
Description
Technical field
The present invention relates to vibration isolator field, in particular to a kind of high quiet low dynamic vibration isolator of boat diesel engine.
Background technique
When boat diesel engine operates under certain operating condition, piston is reciprocating, and crankshaft makees rotary motion, wrist-pin end of connecting rod
Reciprocating with piston, connecting rod tip makees rotary motion with crank-pin, and shaft is swung around pin or crosshead pin, crank connecting link machine
This compound movement of structure, must generate periodically variable out-of-balance force and torque.These unbalanced power and torque transmitting
Easily cause the vibration of other equipment to hull, while acting on hull makes hull generate vibration noise, is easy fatigue rupture, into
One step can generate underwater noise, and the sound for influencing naval vessel is recessive.Therefore, it is necessary to vibration isolator be installed in marine main engine bottom, with isolation
By the exciting force of marine main engine vibration generation, the exciting force of the boat diesel engine under conventional operation revolving speed is the perturbed force of low frequency,
Therefore in order to which low-frequency vibration is isolated, the rigidity of existing vibration isolator is often done relatively soft, although meeting vibration isolation requirement,
But biggish quiet deformation is produced, so that the shaking of diesel engine is bigger, is unfavorable for the normal operation of diesel engine；Therefore, it designs
A kind of high quiet low dynamic vibration isolator can be with the effective solution above problem.Since high quiet low dynamic vibration isolator is a kind of nonlinear isolation
Device, in addition, vibration isolator can deviate its static balance position when the weight of diesel engine is more than the design load of high quiet low dynamic vibration isolator
It sets, vibration isolating effect is deteriorated, and therefore, a kind of high quiet low dynamic vibration isolator of boat diesel engine of the present invention carrys out the above-mentioned quiet deformation of effective solution
The problem of contradictory problems between low frequency vibration isolation and the vibration isolating effect in the case where diesel engine preponderance are deteriorated greatly.
Summary of the invention
The purpose of the present invention is to provide a kind of high quiet low dynamic vibration isolators of boat diesel engine, to solve in above-mentioned background technique
The problem of proposition.
To achieve the above object, the invention provides the following technical scheme: a kind of high quiet low dynamic vibration isolator of boat diesel engine, packet
Bottom case is included, the bottom case is mounted on the mounting blocks of marine main engine bottom, and the inner top side of the bottom case is slidably fitted with carrying
Plate is fixedly connected with the guide rod being arranged symmetrically at the top of the loading plate, and the loading plate is slidably mounted on fixation by guide rod
Block, the fixed block are set as two, and the mounting blocks are fixed between two fixed blocks, are plugged with spiral shell on the fixed block
Bar, the bottom wall of the bottom case offer the guide groove being arranged symmetrically, and the inner top side of the guide groove and bottom side are fixedly installed with respectively
First reinforcing rod and gag lever post, the internal slide of the guide groove are equipped with slide, and it is auxiliary to be socketed with first on first reinforcing rod
Spring is helped, movable chamber is provided in the bottom wall lug boss of the bottom case, is fixedly connected with center among the bottom of the loading plate
Axis, the bottom end of the central axis run through the roof of movable chamber and are fixedly connected with baffle, and the outer surface of the central axis is socketed with
Main spring；
The inside of the movable chamber is fixedly installed with the second reinforcing rod, and the baffle is slidably connected with the second reinforcing rod, institute
It states fixed block and offers limiting slot close to the side of guide rod end face, the right end of the guide rod is fixedly connected with limit plate.
Optionally, the T-shaped shape of the mounting blocks；
The L-shaped shape of fixed block.
Optionally, the screw rod runs through the inside of mounting blocks, and the equal screw thread in the both ends of the screw rod is equipped with nut.
Optionally, first reinforcing rod and gag lever post are slided through the inside of slide；
Second reinforcing rod is set as two.
Optionally, connecting rod is hinged between the top of the slide and the bottom of loading plate.
Optionally, the second secondary spring is socketed on the outside of second reinforcing rod.
Optionally, the limit plate is located at the interior of limiting slot, and the surface of the limit plate is bonded with limiting slot.
Technical effect and advantage of the invention:
1, the present invention is cooperated using multiple groups spring, improves vibration isolation efficiency using its high quiet low dynamic stiffness characteristic, bear compared with
It is excessive to can effectively prevent vibration isolator quiet deformation while high load, and reduces noise, vibration isolating effect is good.
2, the present invention can be such that the resonant frequency of marine main engine vibration isolator reduces, while be more than specified in diesel engine weight
It can reduce the Static Correction of marine main engine when load, it is ensured that the stability of vibration isolator is effectively improved low frequency vibration isolation effect.
Detailed description of the invention
Fig. 1 is vibration isolator mounting structure schematic diagram of the present invention.
Fig. 2 is bottom case schematic cross-sectional view of the present invention.
Fig. 3 is structure enlargement diagram at A in Fig. 2 of the present invention.
Fig. 4 is structure enlargement diagram at B in Fig. 2 of the present invention.
In figure: bottom case 1, marine main engine 2, mounting blocks 3, loading plate 4, guide rod 5, fixed block 6, screw rod 7, nut 8, guide groove 9,
First reinforcing rod 10, gag lever post 11, slide 12, connecting rod 13, the first secondary spring 14, movable chamber 15, central axis 16, baffle 17,
Main spring 18, the second reinforcing rod 19, the second secondary spring 20, limiting slot 21, limit plate 22.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " setting ", " installation ", " connected ", " connection ",
Terms such as " fixations " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection；It can be mechanical connect
It connects；It can be directly connected, it can also be indirectly connected through an intermediary.For the ordinary skill in the art, may be used
To understand the concrete meaning of above-mentioned term in the present invention as the case may be.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
The present invention provides a kind of high quiet low dynamic vibration isolators of boat diesel engine as shown in Figs 1-4, including bottom case 1, by Fig. 1
With shown in Fig. 2, bottom case 1 is mounted on the mounting blocks 3 of 2 bottom of marine main engine, and the inner top side of bottom case 1 is slidably fitted with loading plate
4, the top of loading plate 4 is fixedly connected with the guide rod 5 being arranged symmetrically, and loading plate 4 has been slidably mounted on fixed block 6 by guide rod 5,
Fixed block 6 is set as two, and mounting blocks 3 are fixed between two fixed blocks 6, the T-shaped shape of mounting blocks 3, and fixed block 6 is L-shaped
Shape is plugged with screw rod 7 on fixed block 6, and screw rod 7 runs through the inside of mounting blocks 3, and the equal screw thread in the both ends of screw rod 7 is equipped with nut 8,
Vibration isolator can be installed on the mounting blocks 3 of marine main engine 2, good fixing effect, the bottom wall of bottom case 1 by setting in this way
The guide groove 9 being arranged symmetrically is offered, the inner top side of guide groove 9 and bottom side are fixedly installed with the first reinforcing rod 10 and gag lever post respectively
11, the internal slide of guide groove 9 is equipped with slide 12, and the first reinforcing rod 10 and gag lever post 11 are slided through the inside of slide 12,
It is hinged with connecting rod 13 between the top of slide 12 and the bottom of loading plate 4, is socketed with the first secondary spring on the first reinforcing rod 10
14, when slide 12 along the first reinforcing rod 10 close to 1 side walls of bottom case when, slide 12 compress the first secondary spring 14, bottom case 1
Bottom wall lug boss in be provided with movable chamber 15, central axis 16, the bottom of central axis 16 are fixedly connected among the bottom of loading plate 4
End runs through the roof of movable chamber 15 and is fixedly connected with baffle 17, and the outer surface of central axis 16 is socketed with main spring 18, loading plate 4
Central axis 16 can be driven to move down and compress main spring 18；
As shown in Fig. 3 and Fig. 4, the inside of movable chamber 15 is fixedly installed with the second reinforcing rod 19, the setting of the second reinforcing rod 19
It is two, baffle 17 is slidably connected with the second reinforcing rod 19, and the outside of the second reinforcing rod 19 is socketed with the second secondary spring 20, gear
Plate 17 can compress the second secondary spring 20, side of the fixed block 6 close to 5 end face of guide rod along 19 slide downward of the second reinforcing rod
Limiting slot 21 is offered, the right end of guide rod 5 is fixedly connected with limit plate 22, and limit plate 22 is located at interior, the limit plate of limiting slot 21
22 surface is bonded with limiting slot 21.
Working principle:
When in use, when load-bearing is less than rated load, the second secondary spring 20 does not work, the main bullet in central axis 16
Deformation occurs for spring 18, bears the gravitational load effect of boat diesel engine, while the first secondary spring 14 is compressed by slide 12, with the
One secondary spring 14 constitutes high quiet low dynamic vibration isolator, plays the role of that diesel engine low-frequency vibration is isolated.When load-bearing is more than rated load
When, loading plate 4 drives central axis 16 to move down, so that main spring 18 be made further to compress, central axis 16 is further moved down, this
When the second secondary spring 20 compressed by baffle 17, the second secondary spring 20 starts working, such main spring 18 and the second auxiliary
Spring 20 bears the gravitational load effect of boat diesel engine jointly, and Static stiffness is enhanced, the rigidity ratio of high quiet low dynamic vibration isolator
It reduces, bearing capacity improves, it is ensured that quiet deformation is not excessive, and system continues to keep static balance near design position point.Simultaneously
First secondary spring 14 is compressed by slide 12, is collectively constituted high quiet low dynamic vibration isolator with main spring 18, the second secondary spring 20, is protected
The bearing capacity of vibration isolator is demonstrate,proved, simultaneity factor has preferable vibration isolating effect.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution documented by example is modified or equivalent replacement of some of the technical features, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of high quiet low dynamic vibration isolator of boat diesel engine, including bottom case (1), the bottom case (1) are mounted on marine main engine (2) bottom
On the mounting blocks (3) in portion, the inner top side of the bottom case (1) is slidably fitted with loading plate (4), the top of the loading plate (4)
It is fixedly connected with the guide rod (5) being arranged symmetrically, the loading plate (4) is slidably mounted on fixed block (6) by guide rod (5), described
Fixed block (6) is set as two, and the mounting blocks (3) are fixed between two fixed blocks (6), grafting on the fixed block (6)
Have screw rod (7), the bottom wall of the bottom case (1) offers the guide groove (9) being arranged symmetrically, the inner top side of the guide groove (9) and bottom
Side is fixedly installed with the first reinforcing rod (10) and gag lever post (11) respectively, and the internal slide of the guide groove (9) is equipped with slide
(12), it is socketed with the first secondary spring (14) on first reinforcing rod (10), setting in the bottom wall lug boss of the bottom case (1)
Have movable chamber (15), is fixedly connected with central axis (16) among the bottom of the loading plate (4), the bottom end of the central axis (16)
Through movable chamber (15) roof and be fixedly connected with baffle (17), the outer surface of the central axis (16) is socketed with main spring
(18)；
The inside of the movable chamber (15) is fixedly installed with the second reinforcing rod (19), the baffle (17) and the second reinforcing rod (19)
It is slidably connected, the fixed block (6) offers limiting slot (21) close to the side of guide rod (5) end face, the right end of the guide rod (5)
It is fixedly connected with limit plate (22).
2. the high quiet low dynamic vibration isolator of boat diesel engine according to claim 1, it is characterised in that:
The T-shaped shape of the mounting blocks (3)；
The L-shaped shape of the fixed block (6).
3. the high quiet low dynamic vibration isolator of boat diesel engine according to claim 1, it is characterised in that:
The screw rod (7) runs through the inside of mounting blocks (3), and the equal screw thread in both ends of the screw rod (7) is equipped with nut (8).
4. the high quiet low dynamic vibration isolator of boat diesel engine according to claim 1, it is characterised in that:
First reinforcing rod (10) and gag lever post (11) are slided through the inside of slide (12)；
Second reinforcing rod (19) is set as two.
5. the high quiet low dynamic vibration isolator of boat diesel engine according to claim 1, it is characterised in that:
Connecting rod (13) are hinged between the top of the slide (12) and the bottom of loading plate (4).
6. the high quiet low dynamic vibration isolator of boat diesel engine according to claim 1, it is characterised in that:
The second secondary spring (20) are socketed on the outside of second reinforcing rod (19).
7. the high quiet low dynamic vibration isolator of boat diesel engine according to claim 1, it is characterised in that:
The limit plate (22) is located at the interior of limiting slot (21), and the surface of the limit plate (22) is bonded with limiting slot (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910590741.2A CN110219922A (en) | 2019-07-02 | 2019-07-02 | A kind of high quiet low dynamic vibration isolator of boat diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910590741.2A CN110219922A (en) | 2019-07-02 | 2019-07-02 | A kind of high quiet low dynamic vibration isolator of boat diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110219922A true CN110219922A (en) | 2019-09-10 |
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ID=67815559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910590741.2A Pending CN110219922A (en) | 2019-07-02 | 2019-07-02 | A kind of high quiet low dynamic vibration isolator of boat diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110219922A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678269A (en) * | 2017-01-19 | 2017-05-17 | 中国船舶重工集团公司第七研究所 | Vibration and noise reduction device of thrust power module of marine diesel engine |
| CN106801716A (en) * | 2017-04-05 | 2017-06-06 | 陈前 | A kind of Mechanical molecular spring vibration isolation buffer unit |
| CN207438043U (en) * | 2017-10-26 | 2018-06-01 | 邬林洁 | A kind of medical digital image documentation equipment |
-
2019
- 2019-07-02 CN CN201910590741.2A patent/CN110219922A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678269A (en) * | 2017-01-19 | 2017-05-17 | 中国船舶重工集团公司第七研究所 | Vibration and noise reduction device of thrust power module of marine diesel engine |
| CN106801716A (en) * | 2017-04-05 | 2017-06-06 | 陈前 | A kind of Mechanical molecular spring vibration isolation buffer unit |
| CN207438043U (en) * | 2017-10-26 | 2018-06-01 | 邬林洁 | A kind of medical digital image documentation equipment |
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