CN112937758A - Damping unit, buoyant raft vibration isolation device and ship - Google Patents
Damping unit, buoyant raft vibration isolation device and ship Download PDFInfo
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- CN112937758A CN112937758A CN202110268985.6A CN202110268985A CN112937758A CN 112937758 A CN112937758 A CN 112937758A CN 202110268985 A CN202110268985 A CN 202110268985A CN 112937758 A CN112937758 A CN 112937758A
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- 238000013016 damping Methods 0.000 title claims abstract description 143
- 238000002955 isolation Methods 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 73
- 230000035939 shock Effects 0.000 claims abstract description 51
- 239000000956 alloy Substances 0.000 claims abstract description 10
- 229910001285 shape-memory alloy Inorganic materials 0.000 claims abstract description 10
- 230000007704 transition Effects 0.000 claims description 16
- 230000008859 change Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 7
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
- B63B17/0081—Vibration isolation or damping elements or arrangements, e.g. elastic support of deck-houses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
- B63B35/58—Rafts, i.e. free floating waterborne vessels, of shallow draft, with little or no freeboard, and having a platform or floor for supporting a user
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2224/00—Materials; Material properties
- F16F2224/02—Materials; Material properties solids
- F16F2224/0258—Shape-memory metals, e.g. Ni-Ti alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2228/00—Functional characteristics, e.g. variability, frequency-dependence
- F16F2228/06—Stiffness
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The embodiment of the application provides a shock attenuation unit, buoyant raft vibration isolation mounting and ship, wherein the shock attenuation unit includes: a first damper; a support member connected to the first shock absorbing member, the support member being made of a memory alloy material; a heating member for heating the support member. The damping unit that this application embodiment provided heats for support piece through the heating member and can change support piece's rigidity, and then can change damping unit's bulk rigidity, can be applicable to different operating mode environment, has improved damping unit's application scope greatly, especially can improve damping unit's low frequency vibration isolation performance.
Description
Technical Field
The invention relates to the technical field of shock absorption, in particular to a shock absorption unit, a buoyant raft vibration isolation device and a ship.
Background
The buoyant raft vibration isolation device has excellent vibration reduction and isolation performance, and is widely applied to the field of ships. Install one or more equipment integratedly on public frame (buoyant raft) to utilize the shock absorber to link to each other buoyant raft and hull basis, the vibration that operates equipment on can the decay buoyant raft on the one hand outwards transmits, improves personnel's the travelling comfort of taking, and on the other hand can the transmission of external vibration to the buoyant raft on integrated high accuracy equipment, guarantees that its operation is reliable and stable. However, in the design process of the floating raft vibration isolation device, the stability of the vibration isolation device under severe working conditions such as impact and swing needs to be considered. Therefore, most of the traditional vibration damping units are fixed in rigidity, and in order to meet the requirements of stability and safety of the vibration isolation device in design, the vibration dampers with larger rigidity are usually selected, so that the low-frequency vibration isolation performance of the vibration damping units can be lost.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
In view of this, according to a first aspect of embodiments of the present application, there is provided a shock-absorbing unit including:
a first damper;
a support member connected to the first shock absorbing member, the support member being made of a memory alloy material;
a heating member for heating the support member.
In a first possible embodiment of the first aspect, the support is spring-like.
In a second possible implementation of the first aspect, the shock absorbing unit further comprises:
and the second damping piece is connected to the first damping piece, and the supporting piece is sleeved on the outer side of the second damping piece.
In a third possible embodiment of the first aspect, the shock absorbing unit further comprises:
the first damping piece is connected to one side of the transition plate, the second damping piece is connected to the other side of the transition plate, and the supporting piece is connected to the transition plate;
wherein the support member extends to lift the transition plate with the support member heated.
In a fourth possible embodiment of the first aspect, the shock absorbing unit further comprises:
and the pressure sensor is arranged at one end of the second damping piece, which is far away from the first damping piece.
In a fifth possible implementation manner of the first aspect, the shock absorbing unit further includes:
the controller is connected to the pressure sensor and the heating member, and the controller is used for receiving the pressure information detected by the pressure sensor, and under the condition that the pressure information exceeds a pressure threshold value, the controller controls the heating member to heat the supporting member.
In a sixth possible implementation of the first aspect, the shock absorbing unit further comprises:
and one end of the supporting piece is connected to the bottom plate, and the other end of the supporting piece is connected to the first damping piece.
According to a second aspect of embodiments of the present application, there is provided a buoyant raft vibration isolation device comprising:
the damping unit of any one of the above technical solutions;
and the buoyant raft is arranged on the first damping piece.
According to a third aspect of embodiments of the present application there is provided a vessel comprising:
the buoyant raft vibration isolation device of the technical scheme is provided;
a hull, the support being connected to the hull.
In a first possible implementation of the third aspect, the vessel further comprises:
and the power equipment is arranged on the buoyant raft.
Compared with the prior art, the invention at least comprises the following beneficial effects: the shock attenuation unit that this application embodiment provided, included first shock attenuation piece, support piece and heating member, first shock attenuation piece is connected in support piece, and support piece is made by memory alloy material, and the heating member is used for heating for support piece, can set up equipment on first shock attenuation piece in the course of the work, and first shock attenuation piece passes through support piece and hull fixed connection, can play absorbing effect for equipment through support piece and the common support equipment of first shock attenuation piece. The support member is made of memory aggregate materials, the rigidity of the support member can be changed by heating the support member through the heating member, and then the overall rigidity of the damping unit can be changed. For example, when the rigidity requirement of the damping unit is high under severe conditions of ship running, the heating element can be controlled to heat the supporting element, or the heating power of the heating element is increased, so that the supporting element is in a working state with high temperature, the rigidity of the supporting element is increased, and the rigidity of the damping unit is further increased. So set up to make the rigidity of shock attenuation unit adjustable, can be applicable to different operating mode environment, improved the application scope of shock attenuation unit greatly, especially can improve the low frequency vibration isolation performance of shock attenuation unit.
Correspondingly, the buoyant raft vibration isolation device and the ship provided by the embodiment of the invention also have the technical effects.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a chip unit according to an embodiment of the present application.
Wherein, the corresponding relation between the reference numbers and the part names in fig. 1 is as follows:
1 a first damping member, 2 a supporting member, 3 a second damping member, 4 a transition plate, 5 a pressure sensor and 6 a bottom plate.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1, according to an aspect of an embodiment of the present application, there is provided a shock-absorbing unit including: a first shock absorbing member 1; a support member 2 connected to the first damping member 1, the support member 2 being made of a memory alloy material; and a heating member for heating the support member 2.
The damping unit provided by the invention comprises a first damping part 1, a supporting part 2 and a heating part, wherein the first damping part 1 is connected to the supporting part 2, the supporting part 2 is made of a memory alloy material, the heating part is used for heating the supporting part 2, equipment can be arranged on the first damping part 1 in the working process, the first damping part 1 is fixedly connected with a ship body through the supporting part 2, and the damping effect can be achieved for the equipment by supporting the equipment through the supporting part 2 and the first damping part 1 together.
According to the damping unit provided by the invention, the supporting piece 2 is made of the memory total material, the rigidity of the supporting piece 2 can be changed by heating the supporting piece 2 through the heating piece, and further the overall rigidity of the damping unit can be changed, so that the rigidity of the damping unit can be adjusted, the damping unit can be suitable for different working condition environments, the application range of the damping unit is greatly improved, and particularly the low-frequency vibration isolation performance of the damping unit can be improved.
For example, when the requirement on the low-frequency vibration isolation performance of the damping unit is high, the heating element may be turned off or the heating power of the heating element as the supporting element 2 may be reduced, so that the supporting element 2 is in a state of relatively low temperature, the rigidity of the supporting element 2 is reduced, and the low-frequency vibration isolation performance of the damping unit may be improved.
For another example, when the requirement for the rigidity of the damping unit is high under severe conditions for ship driving, the heating member may be controlled to heat the supporting member 2, or the heating power of the heating member may be increased, so that the supporting member 2 is in an operating state with a high temperature, and at this time, the rigidity of the supporting member 2 is increased, and further, the rigidity of the damping unit may be increased. So as to arrange.
It will be appreciated that the damping unit provided by the present invention is equally applicable to damping equipment on the ground or in a factory, for example, by attaching the support member 2 at one end to the ground and at the other end to the first damping member 1, and by attaching the equipment to the first damping member 1. The device can be damped by the first damping member 1 and the support member 2.
In some examples, the first shock absorbing member 1 may include a rubber body and a spring, the rubber body is wrapped on the outer side of the spring, and the rubber body and the spring can absorb shock for the device fixed on the first shock absorbing member 1. Furthermore, the first damping part 1 can also comprise a shell and a filling part, wherein the shell wraps the outer side of the rubber body to play a role in preventing external water vapor or dust from entering the rubber body and the spring and prevent the rubber body and the spring from being corroded; the middle part of spring again can be filled to the rubber spare, plays the rigidity that can improve first damper 1 for the shock attenuation of first damper 1 specially adapted shipboard equipment.
In some examples, the heating element may be a resistance wire wound around the support 2, or may be a power supply unit connected to the heating element, or may be any other device or component capable of heating the support 2.
In some examples, the support 2 is spring-like.
The supporting piece 2 is in a spring shape, so that the supporting piece 2 has a better damping effect on one hand; on the other hand is when heating for support piece 2 through the heating member, the support piece 2 of spring form possesses stronger extension ability, can make support piece 2's rigidity change interval bigger for support piece 2 is through the heating member heating back and the rigidity difference increase between the unheated state, makes the shock attenuation unit can be applicable to different operating mode environment, has improved the application scope of shock attenuation unit greatly, especially can improve the low frequency vibration isolation performance of shock attenuation unit.
In some examples, the shock-absorbing unit further includes: and the second damping piece 3 is connected to the first damping piece 1, and the supporting piece 2 is sleeved on the outer side of the second damping piece 3.
Through the setting of second damper 3, in the course of the work, can make second damper 3 be in different operating condition through the different operating condition of heating member.
For example, when the heating member stops the support member 2 and is heated or the heating member is heated by the low power position support member 2, so that the support member 2 is in a relatively low temperature state, the support member 2 made of the memory alloy material is shortened, the second damping member 3 abuts against the ship body or the ground, at this time, the second damping member 3 is in a working state, the device arranged on the first damping member 1 can damp through the first damping member 1, the support member 2 and the second damping member 3, and at this time, the damping performance of the damping unit is better.
For another example, when the requirement on the rigidity of the damping unit is high, the heating member may be controlled to start working or the heating power of the heating member may be increased, so that the supporting member 2 extends, the supporting member 2 may lift the first damping member 1 and the second damping member 3, the second damping member 3 may be separated from the ship body or the ground, the second damping member 3 loses the damping effect, and at this time, the device disposed on the first damping member 1 may damp through the first damping member 1 and the supporting member 2.
It will be appreciated that the second cushion member 3 has a stiffness different from that of the support member 2, and that the support member 2 has a stiffness less than that of the second cushion member 3.
In some examples, the second damping member 3 has the same structure as the first damping member 1, and the second damping member 3 may include a rubber body wrapped outside the spring and a spring to damp the device fixed on the first damping member 1. Furthermore, the second damping member 3 may further include a housing and a filling member, the housing wraps the outside of the rubber body to prevent external moisture or dust from entering the rubber body and the spring, and prevent the rubber body and the spring from being corroded; the middle part of spring again can be filled to the rubber spare, plays the rigidity that can improve second damper 3 for second damper 3 is particularly useful for the shock attenuation of shipboard equipment.
In some examples, the shock-absorbing unit further includes: the first damping piece 1 is connected to one side of the transition plate 4, the second damping piece 3 is connected to the other side of the transition plate 4, and the supporting piece 2 is connected to the transition plate 4; wherein the support member 2 extends to lift the transition plate 4 with the support member 2 heated.
Through the setting of crossing cab apron 4, the installation and the fixed of the first damper 1 of being convenient for and second damper 3 on the one hand, the support piece 2 of being convenient for on the other hand lifts first damper 1 and second damper 3, the rigidity adjustment of the shock attenuation unit of being convenient for.
Taking the rigidity of the first damping member 1 as k1, the rigidity of the second damping member 3 as k2, the rigidity of the support member 2 in an unheated state as k01, and the rigidity of the support member 2 in a heated state as k02 as an example, when the support member 2 is not heated by the heating member, the rigidity of the support member 2 as k01 is small, the length of the support member 2 is short, the second damping member 3 is in contact with the ship body, the first damping member 1, the second damping member 3 and the support member 2 act simultaneously, and the total rigidity of the whole damping unit is as follows: 1/(1/k1+1/(k2+ k01)) ═ k1(k2+ k01)/(k1+ k2+ k01), since the initial state stiffness of the shape supporting member 2 in the non-heated state is small, k01 is much smaller than k1 and k2, the damping unit can be equivalently regarded as a series connection of the first damper 1 and the second damper 3, and the total stiffness is k1k2/(k1+ k 2). When the rigidity of the vibration reduction unit needs to be increased, the support member 2 is heated through the heating member, the phase change can occur to the support member 2 supported by the heated memory alloy material, the output restoring force jacks up the transition plate 4, the self rigidity is changed into k02, and the total rigidity of the whole vibration reduction unit is as follows: 1/(1/k1+1/(k2+ k02)) ═ k1(k2+ k02)/(k1+ k2+ k02), because the rigidity of the support member 2 in a thermal state is very large, k02 is far larger than k1 and k2, so that the damping unit can be regarded as an upper layer damper to act alone at the moment, and the total rigidity is about k 1.
In some examples, the shock-absorbing unit further includes: and the pressure sensor 5 is arranged at one end of the second shock absorbing member 3 far away from the first shock absorbing member 1.
In the damping unit provided by the invention, in order to ensure the damping performance of the damping unit, the supporting piece 2 can be in a non-heating state under a normal condition, the first damping piece 1 and the second damping piece 3 jointly act, the second damping piece 3 can be abutted against a ship body or the ground, the pressure and the impact force borne by the damping unit can be detected through the arrangement of the pressure sensor 5, and the working state of the damping unit can be monitored. For example, when the pressure value detected by the pressure sensor 5 is larger, it indicates that the damping unit is subjected to a larger impact force, in which case the heating member should be turned on to heat the supporting member 2, so that the supporting member 2 lifts the first damping member 1 and the second damping member 3, and the rigidity of the damping unit is improved.
In some examples, the shock-absorbing unit further includes: and the controller is connected with the pressure sensor 5 and the heating element and is used for receiving the pressure information detected by the pressure sensor 5, and controlling the heating element to heat the support element 2 under the condition that the pressure information exceeds a pressure threshold value.
Through the setting of controller, the controller can communication connection in pressure sensor 5, sets up pressure threshold value simultaneously, when the controller learns through pressure sensor 5 that the pressure value that pressure sensor 5 monitored exceeds pressure threshold value, then explains the shock attenuation unit and is bearing great impact force, should open the heating member under this condition and heat for support piece 2 to make support piece 2 lift first damper 1 and second damper 3, make the rigidity of damper improve.
It can be understood that the controller can be any type of controller in the prior art, the controller can be obtained through purchasing, and the invention only enables the damping unit to automatically adjust the rigidity through the connection relation among the controller, the pressure sensor 5 and the heating element, enables the damping unit to adaptively adjust the working state of the damping unit based on the result detected by the pressure sensor 5, and further improves the application range of the damping unit.
In some examples, the shock-absorbing unit further includes: and a bottom plate 6, one end of the supporting member 2 is connected to the bottom plate 6, and the other end is connected to the first shock absorbing member 1.
Through the setting of bottom plate 6, for support piece 2 provides the mounted position, under the condition that shock attenuation unit includes bottom plate 6, support piece 2 can be connected in ground or hull through bottom plate 6, bottom plate 6 can with hull or the ground between possess bigger connection face, the stable installation of the shock attenuation unit of being convenient for.
In some examples, the bottom plate 6 may be made of steel, and the bottom plate 6 may be welded to the hull of the vessel or fixed to the ground by bolts.
In some examples, the shock absorption unit may further include a wear-resistant layer, the wear-resistant layer is connected to the bottom plate 6, and the wear-resistant layer may be interposed between the bottom plate 6 and the hull during the operation of the shock absorption unit, so that the probability of wear of the bottom plate 6 and the hull is reduced, and the service lives of the hull and the shock absorption unit are prolonged.
According to a second aspect of embodiments of the present application, there is provided a buoyant raft vibration isolation device comprising: the damper unit of any of the above embodiments; and the buoyant raft is arranged on the first shock absorption piece 1.
The floating raft vibration isolation device provided by the invention comprises a damping unit and a floating raft, wherein a supporting piece 2 of the damping unit is made of a memory alloy material, a heating piece is used for heating the supporting piece 2, equipment can be arranged on the floating raft in the working process, a first damping piece 1 is fixedly connected with a ship body through the supporting piece 2, and the equipment can be supported by the supporting piece 2 and the first damping piece 1 together to achieve a damping effect on the equipment.
According to the floating raft vibration isolation device provided by the invention, the supporting piece 2 is made of the memory total material, the rigidity of the supporting piece 2 can be changed by heating the supporting piece 2 through the heating piece, and further the overall rigidity of the damping unit can be changed, so that the rigidity of the damping unit can be adjusted, the floating raft vibration isolation device can be suitable for different working conditions, the application range of the damping unit is greatly improved, and particularly the low-frequency vibration isolation performance of the damping unit can be improved.
For example, when the requirement on the low-frequency vibration isolation performance of the damping unit is high, the heating element may be turned off or the heating power of the heating element as the supporting element 2 may be reduced, so that the supporting element 2 is in a state of relatively low temperature, the rigidity of the supporting element 2 is reduced, and the low-frequency vibration isolation performance of the damping unit may be improved.
For another example, when the requirement for the rigidity of the damping unit is high under severe conditions for ship driving, the heating member may be controlled to heat the supporting member 2, or the heating power of the heating member may be increased, so that the supporting member 2 is in an operating state with a high temperature, and at this time, the rigidity of the supporting member 2 is increased, and further, the rigidity of the damping unit may be increased. So as to arrange.
It will be appreciated that the damping unit provided by the present invention is equally applicable to damping equipment on the ground or in a factory, for example, by attaching the support member 2 at one end to the ground and at the other end to the first damping member 1, and by attaching the equipment to the first damping member 1. The device can be damped by the first damping member 1 and the support member 2.
In the case that the damping unit includes the second damping member 3 and the transition plate 4, taking the stiffness of the first damping member 1 as k1, the stiffness of the second damping member 3 as k2, the stiffness of the support member 2 in the non-heated state as k01, and the stiffness of the support member 2 in the heated state as k02 as an example, when the support member 2 is not heated by the heating member, the stiffness k01 of the support member 2 is small, the length of the support member 2 is short, the second damping member 3 is in contact with the hull, the first damping member 1, the second damping member 3 and the support member 2 act simultaneously, and the total stiffness of the whole damping unit is: 1/(1/k1+1/(k2+ k01)) ═ k1(k2+ k01)/(k1+ k2+ k01), since the initial state stiffness of the shape supporting member 2 in the non-heated state is small, k01 is much smaller than k1 and k2, the damping unit can be equivalently regarded as a series connection of the first damper 1 and the second damper 3, and the total stiffness is k1k2/(k1+ k 2). When the rigidity of the vibration reduction unit needs to be increased, the support member 2 is heated through the heating member, the phase change can occur to the support member 2 supported by the heated memory alloy material, the output restoring force jacks up the transition plate 4, the self rigidity is changed into k02, and the total rigidity of the whole vibration reduction unit is as follows: 1/(1/k1+1/(k2+ k02)) ═ k1(k2+ k02)/(k1+ k2+ k02), because the rigidity of the support member 2 in a thermal state is very large, k02 is far larger than k1 and k2, so that the damping unit can be regarded as an upper layer damper to act alone at the moment, and the total rigidity is about k 1.
In some examples, the side of the buoyant raft, which is away from the damping unit, may be provided with a sink groove for installing equipment, and the equipment may be disposed in the sink groove, so that the equipment may be prevented from being displaced laterally relative to the buoyant raft vibration isolation device, and the stability of fixing the equipment may be improved.
According to a third aspect of embodiments of the present application there is provided a vessel comprising: the floating raft vibration isolation device adopts the technical scheme; the hull, the support 2 is connected to the hull.
According to the ship provided by the invention, the supporting piece 2 of the floating raft vibration isolation device is made of the memory total material, the rigidity of the supporting piece 2 can be changed by heating the supporting piece 2 through the heating piece, and further the integral rigidity of the damping unit can be changed, so that the rigidity of the damping unit can be adjusted, the ship can be suitable for different working conditions, the application range of the damping unit is greatly improved, particularly the low-frequency vibration isolation performance of the damping unit can be improved, and the ship can run safely and stably.
For example, when the requirement of the ship on the low-frequency vibration isolation performance of the damping unit is high, the heating element can be turned off or the heating power of the supporting element 2 by the heating element can be reduced, so that the supporting element 2 is in a relatively low temperature state, the rigidity of the supporting element 2 is reduced, and the low-frequency vibration isolation performance of the damping unit can be improved.
For another example, when the requirement for the rigidity of the damping unit is high under severe conditions for ship driving, the heating member may be controlled to heat the supporting member 2, or the heating power of the heating member may be increased, so that the supporting member 2 is in an operating state with a high temperature, and at this time, the rigidity of the supporting member 2 is increased, and further, the rigidity of the damping unit may be increased. So as to arrange.
In some examples, the vessel further comprises: and the power equipment is arranged on the buoyant raft.
Can provide power for the ship through power equipment's setting, be convenient for drive ship and travel, power equipment sets up on the buoyant raft, and the shock attenuation unit can play absorbing effect for power equipment, and the outside transmission of vibration that can attenuate moving power equipment on the buoyant raft improves personnel's travelling comfort of taking on the one hand, and on the other hand can the transmission of the external vibration power equipment of integrated high accuracy on the buoyant raft, guarantees that its operation is reliable and stable.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. 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 the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A shock absorbing unit, comprising:
a first damper;
a support member connected to the first shock absorbing member, the support member being made of a memory alloy material;
a heating member for heating the support member.
2. The shock absorbing unit according to claim 1,
the support member is spring-shaped.
3. The shock absorbing unit of claim 1, further comprising:
and the second damping piece is connected to the first damping piece, and the supporting piece is sleeved on the outer side of the second damping piece.
4. The shock absorbing unit of claim 3, further comprising:
the first damping piece is connected to one side of the transition plate, the second damping piece is connected to the other side of the transition plate, and the supporting piece is connected to the transition plate;
wherein the support member extends to lift the transition plate with the support member heated.
5. The shock absorbing unit of claim 3, further comprising:
and the pressure sensor is arranged at one end of the second damping piece, which is far away from the first damping piece.
6. The shock absorbing unit of claim 5, further comprising:
the controller is connected to the pressure sensor and the heating member, and the controller is used for receiving the pressure information detected by the pressure sensor, and under the condition that the pressure information exceeds a pressure threshold value, the controller controls the heating member to heat the supporting member.
7. The shock absorbing unit according to any one of claims 1 to 6, further comprising:
and one end of the supporting piece is connected to the bottom plate, and the other end of the supporting piece is connected to the first damping piece.
8. A buoyant raft vibration isolation apparatus comprising:
the shock absorbing unit according to any one of claims 1 to 7;
and the buoyant raft is arranged on the first damping piece.
9. A ship, characterized by comprising:
the buoyant raft vibration isolation device of claim 8;
a hull, the support being connected to the hull.
10. The vessel of claim 9, further comprising:
and the power equipment is arranged on the buoyant raft.
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| CN202110268985.6A CN112937758A (en) | 2021-03-12 | 2021-03-12 | Damping unit, buoyant raft vibration isolation device and ship |
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