CN206129964U - Shipping marine diesel engine unit rubber shock absorber for heat abstractor - Google Patents
Shipping marine diesel engine unit rubber shock absorber for heat abstractor Download PDFInfo
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- CN206129964U CN206129964U CN201621144506.0U CN201621144506U CN206129964U CN 206129964 U CN206129964 U CN 206129964U CN 201621144506 U CN201621144506 U CN 201621144506U CN 206129964 U CN206129964 U CN 206129964U
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- shock absorber
- diesel engine
- rubber shock
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Abstract
The utility model discloses shipping marine diesel engine unit rubber shock absorber for heat abstractor relates to a rubber shock absorber that is used for the shipping boats and ships. Its purpose is effectual in order to provide a damping to can guarantee the steady shipping marine diesel engine unit rubber shock absorber for heat abstractor of heat abstractor. The utility model discloses shipping marine diesel engine unit rubber shock absorber for heat abstractor includes on the metal under skeleton (1) and the metal skeleton (2), the skeleton is circular cone on the metal, the skeleton is the tube -shape under the metal, the skeleton lies in skeleton under the metal on the metal, on the metal under lateral wall and the metal of skeleton the inside wall of skeleton pass through rubber (3) and bond, the top of skeleton sets firmly threaded post (4) on the metal, flange base (5) have set firmly under the metal on the skeleton.
Description
Technical field
This utility model is related to a kind of vibration absorber, more particularly to a kind of rubber shock absorber for marine vessel.
Background technology
Large-tonnage marine vessel typically adopts diesel powered, and wherein heat abstractor radiates for diesel engine unit, due to sending out
Motivation room space limits, and heat abstractor appearance profile is usually designed to a length length, height height, the little cuboid of width.
During ship's navigation, produce in the vibration of the diesel engine unit of dynamical system, the vibration of motor unit and ship shipping process
Vibration all can produce vibration or percussion to heat abstractor, or even be also possible to cause the resonance of sinking apparatus, to radiating
Plant running safety and connection reliability are formed and threatened, and then can constitute harm to the safety and reliability of ship's navigation.
At present, the heat abstractor of marine vessel diesel powered room is to be connected to start machine frame by metal spring
Frame, this connected mode can only ensure vertical vibration isolating effect, it is difficult to ensure that horizontal and vertical vibration isolation.Metal spring exist with
Lower defect：(1) metal spring damping is little, excessive by the enlargement ratio that resonates during resonant frequency.The damped coefficient of metal spring is very
Little, using metal spring vibration isolation heat abstractor, resonance enlargement ratio is excessive when by resonant frequency, causes heat abstractor altogether
The Oscillation Amplitude for shaking a little is excessive, affects the connection of heat sink interior structure and causes equipment fault.(2) metal spring is laterally and vertical
It is too small to rigidity.The horizontal and vertical rigidity very little of metal spring, ship occurs heel or trim, metal spring in navigation process
The little heat abstractor that is easily caused of rigidity is laterally or longitudinally having very large deformation, causes equipment unstability.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of good damping result, and ensure that heat abstractor is put down
Steady marine vessel diesel engine machine pack heat dissipation device rubber shock absorber.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, including metal upper skeleton and metal
Lower skeleton, the metal upper skeleton is in cone shape, and the metal lower skeleton is cylindrical in shape, and the metal upper skeleton is located under metal
In skeleton, the lateral wall of metal upper skeleton and the medial wall of metal lower skeleton are bonding by rubber, the top of the metal upper skeleton
Portion is installed with threaded post, and on the metal lower skeleton flange base is installed with.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton
Bottom surface of the bottom surface higher than metal lower skeleton.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton
External diameter is gradually reduced from top to bottom, and the angle of inclination of metal upper skeleton lateral wall is 15 degree.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal lower skeleton
The medial wall internal diameter bonding with rubber is gradually reduced from top to bottom, the medial wall angle of inclination bonding with rubber of metal lower skeleton
For 15 degree.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the rubber section is upper
The scope of freedom is shaped as S-shaped SPL, and the lower scope of freedom of rubber section is shaped as circular curve.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal lower skeleton
Medial wall internal diameter below metal upper skeleton gradually increases from top to bottom.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton and
The material of metal lower skeleton is Q235 steel or No. 45 steel.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton with
The threaded post is integrally formed, and the metal lower skeleton is also integrally formed with the flange base.
This utility model marine vessel diesel engine machine pack heat dissipation device is existed with rubber shock absorber difference from prior art
In this utility model when in use, threaded post connection supports heat abstractor, flange base to be connected to diesel engine unit framework
On, because metal upper skeleton is cone shape, therefore the rubber being bonded between metal upper skeleton and metal lower skeleton vertically cuts
Face is V-shaped, and V-arrangement rubber is vertical for this when bearing load, and the force way of rubber is compression shear type, wherein vertical most of to cut
Stress is cut, therefore this utility model natural frequency is low, it can isolate because the vibration that dynamical system and vessel motion are caused reaches
To 80%, harm of the vibration to heat abstractor is effectively reduced, it is ensured that heat abstractor installs the reliability of connection, it is ensured that ship
The safety of oceangoing ship navigation.
Below in conjunction with the accompanying drawings the utility model is described in further detail.
Description of the drawings
Fig. 1 is the front view of this utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber；
Fig. 2 is the top view of this utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber；
Fig. 3 is the sectional view of the line A-A along Fig. 2；
Fig. 4 is linear SDOF system illustraton of model；
Fig. 5 is the graph of a relation of vibration transmissibility and vibration ratio.
Specific embodiment
As shown in figure 1, and with reference to shown in Fig. 2,3, this utility model marine vessel diesel engine machine pack heat dissipation device rubber
Vibroshock includes metal upper skeleton 1 and metal lower skeleton 2, and the metal upper skeleton 1 is in cone shape, the metal lower skeleton 2
It is cylindrical in shape, the metal upper skeleton 1 is located in metal lower skeleton 2, and the lateral wall of metal upper skeleton 1 is interior with metal lower skeleton 2
By the bonding of rubber 3, the top of the metal upper skeleton 1 is installed with threaded post 4, is installed with the metal lower skeleton 2 side wall
Flange base 5.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton 1
Bottom surface higher than metal lower skeleton 2 bottom surface, its difference in height be 24 ㎜, formed a hollow space.This construction featuress are caused
The rubber shock absorber under oscillating load effect, when rubber 3 and metal upper skeleton 1 are moved downward, in the range of the carrying of design,
The vibroshock bottom space of itself can just meet motion deformation requirement, and so mounting condition is required simply, to install this and subtract
The device that shakes only need to reserve two installation bolt holes in boat diesel engine Dynamo Room framework, it is not necessary to macropore is beaten on unit framework,
Unit framework intensity is not interfered with.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton 1
External diameter be gradually reduced from top to bottom, the angle of inclination of the lateral wall of metal upper skeleton 1 is 15 degree.The metal lower skeleton 2 with
The medial wall internal diameter of the bonding of rubber 3 is gradually reduced from top to bottom, the medial wall inclination angle bonding with rubber 3 of metal lower skeleton 2
Spend for 15 degree.Because the angle of inclination of the lateral wall of metal upper skeleton 1 is 15 degree, and metal lower skeleton 2 is bonding with rubber 3
Medial wall angle of inclination is 15 degree, therefore is bonded in the vertical cross-section of rubber 3 between metal upper skeleton 1 and metal lower skeleton 2 in V
Shape, its angle of inclination is also 15 degree.V-arrangement rubber 3 is vertical for this when bearing load, and the force way of rubber 3 is compression shear type, its
In it is vertical most of for shearing stress, therefore this utility model natural frequency is low, and vertical natural frequency is in the range of 6-8Hz.Rubber
Glue material is high-strength rubber, it is ensured that the bearing capacity of the rubber shock absorber.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the section of the rubber 3
The upper scope of freedom is shaped as S-shaped SPL, and the lower scope of freedom of the section of rubber 3 is shaped as circular curve.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal lower skeleton 2
The medial wall internal diameter positioned at the lower section of metal upper skeleton 1 gradually increase from top to bottom.
This utility model marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, wherein the metal upper skeleton 1
Q235 steel or No. 45 steel are with the material of metal lower skeleton 2.The metal upper skeleton 1 is integrally formed with the threaded post 4,
The metal lower skeleton 2 is also integrally formed with the flange base 5.The top outer diameter of metal upper skeleton 1 be 54 ㎜, metal lower skeleton
2 external diameter is 130 ㎜, there is two endoporus, a diameter of 11 ㎜, for installing connection on flange base 5.
Vibration attenuation mechanism of the present utility model is as follows：
The vibration damping mechanical model of rubber shock absorber can be reduced to single-degree-of-freedom linear damping-spring mass system, such as Fig. 4 institutes
Show.
In Fig. 4, mass of system is m, rigidity is Kd, system damping coefficient is C；It is linear single free that rubber shock absorber is constituted
Degree system, when system is supported exciting by the simple harmonic quantity of Ze=Z0ejwt, its equation of motion is represented by：
Substituting into above formula with u=z-ze can obtain：
In formula F (ω) be with excited frequency square and the base that changes shakes power amplitude.Solution formula (1-2) can obtain system
Relative displacement amplitude：
System vibration damping transport T can be obtained in the same manner is：
ω is extraneous excitation force frequency, ω in formulanFor system frequency, ξ is the damping ratio ξ=c/c of systemc；System
Natural frequency is：System critical damping：
With ξ as parameter, vibration transmissibility T compares f/f with frequencynRelation it is as shown in Figure 5.
From figure 5 it can be seen that only whenWhen, the vibration damping transport of system enters vibration damping less than 1, i.e. system
Area；Work as f/fnDuring ≈ 1, system is in resonance state.In engineering design, typically require that frequency ratio is located between 2.5～5.
Vibration damping region, with the reduction of damping ratio ξ, the effectiveness in vibration suppression of system is become better and better；But damping ratio is less, being total to during system resonance
The amplification that shakes is bigger, and this can endanger the stability of heat abstractor, or even cause construction for heat radiating device to break because resonance deformation is excessive
It is bad.Therefore, preferable vibroshock should make the natural frequency of system low, and with variable damping characteristic, i.e., in system
Resonance region has larger damping, makes system not have significant resonance and amplifies, and has less damping in vibration damping area, there is system
Good effectiveness in vibration suppression, while shock resistance and stability will get well.
When in use, the connection of threaded post 4 supports heat abstractor, flange base 5 to be connected to diesel engine to this utility model
On unit framework, because metal upper skeleton 1 is cone shape, therefore it is bonded between metal upper skeleton 1 and metal lower skeleton 2
The vertical cross-section of rubber 3 is V-shaped, and V-arrangement rubber 3 is vertical for this when bearing load, and the force way of rubber 3 is compression shear type, wherein
It is vertical most of for shearing stress, therefore this utility model natural frequency is low, vertical natural frequency in the range of 6-8Hz, its energy
Enough isolation reach 80% due to the vibration that dynamical system and vessel motion are caused, and effectively reduce danger of the vibration to heat abstractor
Evil, it is ensured that heat abstractor installs the reliability of connection, it is ensured that the safety of ship's navigation.
Embodiment described above is only that preferred implementation of the present utility model is described, not to this practicality
New scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of this utility model claims determination
In the range of.
Claims (8)
1. a kind of marine vessel diesel engine machine pack heat dissipation device rubber shock absorber, it is characterised in that：Including metal upper skeleton (1)
With metal lower skeleton (2), the metal upper skeleton is in cone shape, and the metal lower skeleton is cylindrical in shape, the metal upper skeleton
In metal lower skeleton, the lateral wall of metal upper skeleton and the medial wall of metal lower skeleton are bonding by rubber (3), the gold
Threaded post (4) is installed with the top of category upper skeleton, flange base (5) is installed with the metal lower skeleton.
2. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 1, it is characterised in that：Institute
State the bottom surface of the bottom surface higher than metal lower skeleton (2) of metal upper skeleton (1).
3. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 2, it is characterised in that：Institute
The external diameter for stating metal upper skeleton (1) is gradually reduced from top to bottom, and the angle of inclination of metal upper skeleton lateral wall is 15 degree.
4. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 3, it is characterised in that：Institute
The medial wall internal diameter bonding with rubber (3) for stating metal lower skeleton (2) is gradually reduced from top to bottom, metal lower skeleton (2) with
The medial wall angle of inclination of rubber bonding is 15 degree.
5. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 4, it is characterised in that：Institute
The upper scope of freedom for stating rubber (3) section is shaped as S-shaped SPL, and the lower scope of freedom of rubber section is shaped as circular curve.
6. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 5, it is characterised in that：Institute
The medial wall internal diameter below metal upper skeleton (1) for stating metal lower skeleton (2) gradually increases from top to bottom.
7. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 6, it is characterised in that：Institute
The material for stating metal upper skeleton (1) and metal lower skeleton (2) is Q235 steel or No. 45 steel.
8. marine vessel diesel engine machine pack heat dissipation device rubber shock absorber according to claim 7, it is characterised in that：Institute
State metal upper skeleton (1) to be integrally formed with the threaded post (4), the metal lower skeleton (2) and the flange base (5) also
It is body formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144506.0U CN206129964U (en) | 2016-10-21 | 2016-10-21 | Shipping marine diesel engine unit rubber shock absorber for heat abstractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621144506.0U CN206129964U (en) | 2016-10-21 | 2016-10-21 | Shipping marine diesel engine unit rubber shock absorber for heat abstractor |
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| Publication Number | Publication Date |
|---|---|
| CN206129964U true CN206129964U (en) | 2017-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621144506.0U Active CN206129964U (en) | 2016-10-21 | 2016-10-21 | Shipping marine diesel engine unit rubber shock absorber for heat abstractor |
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| CN (1) | CN206129964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150603A (en) * | 2017-08-17 | 2018-06-12 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of inertial navigation equipment damper |
-
2016
- 2016-10-21 CN CN201621144506.0U patent/CN206129964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150603A (en) * | 2017-08-17 | 2018-06-12 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | A kind of inertial navigation equipment damper |
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