CN112253665B - Two-stage vibration isolation buffer - Google Patents

Two-stage vibration isolation buffer Download PDF

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Publication number
CN112253665B
CN112253665B CN202011166158.8A CN202011166158A CN112253665B CN 112253665 B CN112253665 B CN 112253665B CN 202011166158 A CN202011166158 A CN 202011166158A CN 112253665 B CN112253665 B CN 112253665B
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China
Prior art keywords
cylinder body
stage
vibration isolation
end cover
piston
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CN202011166158.8A
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CN112253665A (en
Inventor
叶天贵
王鑫鑫
靳国永
孟佳旭
李文禛
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Harbin Engineering University
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Harbin Engineering University
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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
    • F16F5/00—Liquid springs in which the liquid works as a spring by compression, e.g. combined with throttling action; Combinations of devices including liquid springs
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/30—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium
    • F16F9/303—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium with solid or semi-solid material, e.g. pasty masses, as damping medium the damper being of the telescopic type
    • 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
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/34—Special valve constructions; Shape or construction of throttling passages
    • F16F9/348—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body
    • F16F9/3481—Throttling passages in the form of annular discs or other plate-like elements which may or may not have a spring action, operating in opposite directions or singly, e.g. annular discs positioned on top of the valve or piston body characterised by shape or construction of throttling passages in piston
    • 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
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/10—Adhesion
    • 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
    • F16F2222/00—Special physical effects, e.g. nature of damping effects
    • F16F2222/12—Fluid damping

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

A two-stage vibration isolation buffer belongs to the technical field of vibration isolation buffers. The invention solves the problems of low energy conversion rate and low longitudinal impact resistance of the existing vibration isolation buffer. The lower part of the connecting end cover is arranged between the two cylinder bodies and fixedly connected with the second-stage cylinder body, the upper part of the connecting end cover is inserted into the first-stage cylinder body and fixedly connected with the inner wall of the first-stage cylinder body, the piston is arranged in the first-stage cylinder body in a vertically sliding mode, the upper part of the piston penetrates through the first-stage cylinder body and is fixedly connected with the guide cylinder, the composite diaphragm is fixedly clamped between the connecting end cover and the second-stage cylinder body and is attached to the inner wall of the connecting end cover, the upper surface of the middle part of the composite diaphragm is attached to the bottom of the piston, and the composite diaphragm, the connecting end cover and the first-stage cylinder body form a closed first-stage cavity. The low-inherent-frequency and small-static-deformation-resistant vibration isolation buffer has two mutually isolated closed chambers, energy consumption and energy storage are achieved simultaneously, and on the basis of a molecular spring, the problem that low inherent frequency and small static deformation cannot be achieved simultaneously under heavy load is solved by combining the working principle of the energy consumption type vibration isolation buffer.

Description

Two-stage vibration isolation buffer
Technical Field
The invention relates to a two-stage vibration isolation buffer, and belongs to the technical field of vibration isolation buffers.
Background
In the field of modern machine manufacturing, heavy equipment no longer pursues high power and high rotational speed alone, and its vibration impact also attracts a great deal of attention. Mechanical vibration can not only produce noise, but also cause fatigue failure of components, reducing the service life of the equipment. At present, passive vibration isolation equipment is widely applied due to the advantages of simple structure, low manufacturing cost and stable work, but the traditional passive vibration isolation equipment is unsatisfactory in the field of heavy load and low frequency.
At present, a novel vibration isolation buffer taking a molecular spring as a core is gradually developed and applied, the technology utilizes water molecules to enter and exit a nanoscale hydrophobic hole under high pressure to finish energy storage and release, the problem that the traditional energy storage type vibration isolation buffer cannot achieve both low inherent frequency and small static deformation under heavy load is solved, and the novel vibration isolation buffer has the characteristics of high static and low dynamic stiffness. However, in the current novel molecular spring vibration isolation buffer, a liquid-solid mixed medium formed by 'water-hydrophobic porous particles' is used as a medium for providing elastic restoring force, so that the working stroke of a piston is short, and the defects of low energy conversion rate and poor longitudinal impact resistance in the case of longitudinal impact of large displacement exist.
Disclosure of Invention
The invention provides a two-stage vibration isolation buffer in order to solve the problem that the conventional vibration isolation buffer is low in energy conversion rate and longitudinal impact resistance.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a two-stage vibration isolation buffer comprises a guide cylinder, a first-stage cylinder body, a second-stage cylinder body, a piston, a composite diaphragm and a connecting end cover, wherein the first-stage cylinder body and the second-stage cylinder body are arranged oppositely from top to bottom, the lower part of the connecting end cover is arranged between the two cylinder bodies and fixedly connected with the second-stage cylinder body, the upper part of the connecting end cover is inserted into the first-stage cylinder body and fixedly connected with the inner wall of the first-stage cylinder body, the guide cylinder is coaxially sleeved outside the two cylinder bodies in a vertical sliding manner, the piston is arranged in the first-stage cylinder body in a vertical sliding manner, the upper part of the piston penetrates through the first-stage cylinder body and is fixedly connected with the guide cylinder, the composite diaphragm is fixedly clamped between the connecting end cover and the second-stage cylinder body and is attached to the inner wall of the connecting end cover, the upper surface of the middle part of the composite diaphragm is attached to the bottom of the piston, the composite diaphragm, the connecting end cover and the first-stage cylinder body form a closed first-stage cavity chamber filled with cement, a ring plate is coaxially sleeved outside the piston in the first-stage cylinder body, and a plurality of orifices are processed on the annular plate along the circumferential direction of the annular plate, the composite membrane and the secondary cylinder body form a closed secondary cavity, a hydrophobic metal organic framework material layer is laid on the inner wall of the secondary cylinder body, and the hydrophobic metal organic framework material layer and a water medium contained in the secondary cavity form a molecular spring.
Furthermore, a sleeve is coaxially and fixedly arranged on the outer side of the secondary cylinder body, a first buffer rubber ring is arranged between the sleeve and the guide cylinder, and a second buffer rubber ring is arranged between the sleeve and the secondary cylinder body.
Further, the ring plate is in clearance fit with the inner wall of the first-stage cylinder body.
Furthermore, a guide hole is formed in the upper portion of the first-stage cylinder body, the piston is arranged in the guide hole in a penetrating mode, and sealing rings are arranged between the bottom end of the first-stage cylinder body and the connecting end cover and between the inner wall of the guide hole and the piston respectively.
Furthermore, a plug is arranged on the side wall of the primary cylinder body.
Furthermore, the lateral wall of the secondary cylinder body is provided with a one-way valve.
Furthermore, the upper part of the connecting end cover is connected with the inner wall of the first-stage cylinder body through threads.
Furthermore, the connecting end cover is fixedly connected with the secondary cylinder body through a plurality of bolts.
Further, the upper part of the piston is connected with the guide cylinder through threads.
Compared with the prior art, the invention has the following effects:
the utility model provides a vibration isolation buffer has two airtight cavities that isolate each other, can realize power consumption and energy storage simultaneously in the course of the work, on the basis of molecular spring, combine the theory of operation of energy consumption type vibration isolation buffer, show the characteristic of high static rigidity, low dynamic rigidity in the course of the work, overcome the problem that low natural frequency and little static deformation can not get simultaneously under the heavy load, compared with the prior art, energy conversion rate and shock resistance have been improved, and the bearing capacity is strong concurrently, the working rigidity is low, automatic spacing, the job character who shocks resistance, can realize better vibration isolation, damping and cushioning effect, the specially adapted heavy load low frequency vibration isolation field.
Drawings
FIG. 1 is a main cross-sectional schematic view of the present application;
FIG. 2 is a schematic top view of the present application;
FIG. 3 is a schematic semi-sectional view of the present application;
FIG. 4 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 5 is a schematic view of the segmental operational stiffness of the present application.
Detailed Description
The first embodiment is as follows: the embodiment is described by combining fig. 1 to 5, a two-stage vibration isolation buffer comprises a guide cylinder 1, a first-stage cylinder body 2, a second-stage cylinder body 3, a piston 4, a composite diaphragm 5 and a connecting end cover 6, wherein the first-stage cylinder body 2 and the second-stage cylinder body 3 are arranged in an up-and-down opposite manner, the lower part of the connecting end cover 6 is arranged between the two cylinder bodies and fixedly connected with the second-stage cylinder body 3, the upper part of the connecting end cover 6 is inserted into the first-stage cylinder body 2 and fixedly connected with the inner wall of the first-stage cylinder body 2, the guide cylinder 1 is coaxially sleeved outside the two cylinder bodies in an up-and-down sliding manner, the piston 4 is arranged in the first-stage cylinder body 2 in an up-and-down sliding manner, the upper part of the piston 4 penetrates through the first-stage cylinder body 2 and is fixedly connected with the guide cylinder 1, the composite diaphragm 5 is fixedly clamped between the connecting end cover 6 and the second-stage cylinder body 3 and is attached to the inner wall of the connecting end cover 6, the upper surface of the middle part of the composite diaphragm 5 is attached to the bottom of the piston 4, composite diaphragm 5, connection end cover 6 and one-level cylinder body 2 form inclosed one-level cavity, the packing clay 7 in the one-level cavity, the coaxial cover in 4 outsides of piston that are located one-level cylinder body 2 is equipped with crown plate 8, just it has a plurality of orifices 9 to process along its circumference on the crown plate 8, and composite diaphragm 5 and second grade cylinder body 3 form inclosed second grade cavity, and hydrophobic metal organic framework material layer 10 has been laid to 3 inner walls of second grade cylinder body, constitutes the molecular spring with water medium 11 that hold in the second grade cavity.
The composite diaphragm 5 is attached to the connecting end cover 6 and the piston 4 through pressure provided by water medium in the secondary cylinder body.
The hydrophobic metal organic framework material layer 10 is paved on the inner wall and the side wall of the bottom end of the secondary cylinder body 3.
The sleeve 12 is connected with the secondary cylinder 3 through a plurality of bolts.
Four threaded holes are uniformly distributed at the top end of the guide cylinder 1 and are used for connecting external equipment.
The daub consists of an organic silicon high molecular compound and a filling agent.
The corners of the bottom end of the piston 4 contacting the composite diaphragm 5 and the corners of the connecting end cover 6 are all processed by fillets so as to reduce the abrasion to the composite diaphragm 5.
The composite membrane 5 comprises a high-strength tensile fiber woven layer positioned in the middle layer and sealing rubber layers positioned on two sides of the woven layer.
This application effectively combines energy consumption type vibration isolation buffer's theory of operation on molecular spring's basis, provides a vibration isolation buffer design with two airtight chambers, and this equipment has the characteristics of high energy conversion rate, high bearing capacity, low natural frequency, and the specially adapted is heavily loaded low frequency vibration isolation field.
The utility model provides an isolation buffer has two isolated airtight cavities each other, can realize power consumption and energy storage simultaneously in the course of the work: the daub 7 in the first-stage cavity and the piston 4 rub in a reciprocating mode to finish energy loss, and the second-stage cavity utilizes water molecules to enter and exit the nanoscale hydrophobic holes of the hydrophobic metal organic framework material layer 10 under high pressure to finish energy storage and release. Namely: in the reciprocating motion working process of the piston 4, one part of kinetic energy is stored in the molecular spring, and the other part of kinetic energy is dissipated in the form of friction heat generation, so that the energy conversion rate is improved, and better protection can be provided for vibration-isolated equipment.
The daub 7 in the one-level sealed cavity has the characteristic of being little damping when little displacement, being big damping when big displacement, consequently in the course of the work, when the piston 4 receives the vertical impact of great displacement, can be with most energy dissipation in the one-level cavity to reduce the impact to the molecular spring, improved the anti vertical impact ability of equipment.
The isolation of the cavity is realized by arranging the composite membrane 5 between the two cylinder bodies, the dynamic seal is avoided, and meanwhile, the corners of the piston 4 contacting with the composite membrane 5 and the corners of the connecting end cover 6 are subjected to fillet treatment, so that the reliability and the service life of the device are enhanced.
The hydrophobic metal organic framework material layer 10 has high porosity and is easy to shape, so that the laying shape, the laying number and the laying area can be freely changed according to the structure of the cylinder body.
The daub 7 and the molecular spring have no material aging and corrosion problems, and are reliable in operation and convenient to maintain.
A sleeve 12 is coaxially and fixedly arranged on the outer side of the secondary cylinder body 3, a first buffer rubber ring 13 is arranged between the sleeve 12 and the guide cylinder 1, and a second buffer rubber ring 14 is arranged between the sleeve 12 and the secondary cylinder body 3. Under the action of the first buffer rubber ring, the vibration isolation buffer can bear certain lateral impact load. The second buffer rubber ring plays a role in limiting and buffering. The shape of the buffer rubber ring is not limited, and the buffer rubber rings with different shapes can be selected according to different specific positions.
The ring plate 8 is in clearance fit with the inner wall of the first-stage cylinder body 2. Namely, a certain gap is left between the ring plate 8 and the inner wall of the primary cylinder body 2, and the ring plate is matched with the throttling hole to play a role in throttling and buffering when the piston moves up and down.
A guide hole is formed in the upper portion of the first-stage cylinder body 2, the piston 4 penetrates through the guide hole, and sealing rings are arranged between the bottom end of the first-stage cylinder body 2 and the connecting end cover 6 and between the inner wall of the guide hole and the piston 4 respectively. By the design, the sealing performance of the primary chamber is ensured.
The side wall of the primary cylinder 2 is provided with a plug 15. The daub 7 is conveniently injected into the primary cylinder body 2.
The side wall of the secondary cylinder 3 is fitted with a check valve 16. Used for regulating the pressure of the secondary closed chamber.
The upper part of the connecting end cover 6 is connected with the inner wall of the primary cylinder body 2 through threads. The connection mode is simple and convenient, and the screw thread sealing effect is achieved.
The connecting end cover 6 is fixedly connected with the secondary cylinder body 3 through a plurality of bolts. A plurality of stepped holes are processed in the connecting end cover 6 and used for rotating the spring gaskets and the hexagon bolts, and the number of the bolts is preferably six.
The upper part of the piston 4 is connected with the guide cylinder 1 through screw threads. The design has simple connection structure, reliable connection and convenient assembly and disassembly.
The working principle is as follows:
after the guide cylinder 1 is connected with external equipment, the external load borne by the piston 4 is continuously increased, but the composite diaphragm 5 cannot overcome the pressure in the secondary cavity, so that the device has high rigidity, and the stage is called as a bearing section.
Along with the continuous increase of the external pressure, the composite membrane 5 overcomes the bearing pressure and starts to downwards press the water-shrinkage medium 11, when the critical pressure is reached in the secondary cavity, water molecules start to invade the nanoscale hydrophobic holes of the hydrophobic metal-organic framework material layer 10, and the invasion process follows the Laplace capillary pressure equation:
P＝-2γcosθ/r
that is, the amount of capillary force that the aqueous medium 11 needs to overcome is related to the pore diameter r, the surface tension γ of water, and the contact angle θ of liquid-solid interface, so that a part of kinetic energy is converted into potential energy and stored in the molecular spring.
Meanwhile, when the piston 4 moves downwards, the daub 7 is extruded through a gap between the ring plate 8 and the inner wall and/or the throttling hole 9 of the plug body, and another part of kinetic energy is converted into heat energy to be dissipated due to the existence of the flow resistance. And the daub 7 has the characteristic of being little damping when little displacement, being big damping when big displacement, consequently in the course of the work, when the piston 4 receives the vertical impact of great displacement, can dissipate most kinetic energy in one-level cavity to reduce the impact to the molecular spring.
Thus, the stiffness of the device is drastically reduced at this stage, called the active segment.
When the guide cylinder 1 reaches the limit position or the hydrophobic metal organic framework material layer 10 reaches saturation, no water enters the nanoscale hydrophobic hole any more, the rigidity of the device is increased sharply, and the stage is called as a limit section. The unloading process is the reverse of the above process. Thus, as shown in fig. 5, the two-piece spring isolation damper exhibits a "high-low-high" section stiffness characteristic.
The vibration isolation device has the advantages that the vibration isolation device has the characteristics of high static rigidity and low dynamic rigidity in the working process, the problem that low inherent frequency and small static deformation cannot be achieved under heavy load is solved, meanwhile, the vibration isolation device has strong impact resistance, and is particularly suitable for the field of low-frequency heavy-load vibration isolation.

Claims (8)

1. A double-stage vibration isolation buffer is characterized in that: the device comprises a guide cylinder (1), a first-stage cylinder body (2), a second-stage cylinder body (3), a piston (4), a composite diaphragm (5) and a connecting end cover (6), wherein the first-stage cylinder body (2) and the second-stage cylinder body (3) are arranged in an up-and-down opposite mode, the lower portion of the connecting end cover (6) is arranged between the two cylinder bodies and fixedly connected with the second-stage cylinder body (3), the upper portion of the connecting end cover (6) is inserted into the first-stage cylinder body (2) and fixedly connected with the inner wall of the first-stage cylinder body (2), the guide cylinder (1) is coaxially and vertically slidably sleeved outside the two cylinder bodies, the piston (4) is vertically slidably arranged in the first-stage cylinder body (2), the upper portion of the piston (4) penetrates through the first-stage cylinder body (2) and is fixedly connected with the guide cylinder (1), the composite diaphragm (5) is fixedly clamped between the connecting end cover (6) and the second-stage cylinder body (3) and is attached to the inner wall of the connecting end cover (6), the upper surface of the middle part of the composite diaphragm (5) is attached to the bottom of the piston (4), the composite diaphragm (5), the connecting end cover (6) and the primary cylinder body (2) form a closed primary cavity, cement gum (7) is filled in the primary cavity, a ring plate (8) is coaxially sleeved on the outer side of the piston (4) in the primary cylinder body (2), a plurality of throttling holes (9) are machined in the ring plate (8) along the circumferential direction of the ring plate, the composite diaphragm (5) and the secondary cylinder body (3) form a closed secondary cavity, a hydrophobic metal organic framework material layer (10) is laid on the inner wall of the secondary cylinder body (3), and the hydrophobic metal organic framework material layer and a water medium (11) contained in the secondary cavity form a molecular spring; the daub (7) in the first-stage cavity and the piston (4) rub in a reciprocating manner to finish energy loss, and the second-stage cavity finishes energy storage and release by utilizing water molecules to enter and exit from the nanoscale hydrophobic holes of the hydrophobic metal organic framework material layer (10) under high pressure; a sleeve (12) is coaxially and fixedly arranged on the outer side of the secondary cylinder body (3), a first buffer rubber ring (13) is arranged between the sleeve (12) and the guide cylinder (1), and a second buffer rubber ring (14) is arranged between the sleeve (12) and the secondary cylinder body (3).
2. The dual stage vibration isolation bumper of claim 1, wherein: the annular plate (8) is in clearance fit with the inner wall of the first-stage cylinder body (2).
3. The dual stage vibration isolation bumper of claim 1, wherein: the upper portion of one-level cylinder body (2) has been seted up the guiding hole, wear the dress in piston (4) are in the guiding hole, and be provided with the sealing washer respectively between the bottom of one-level cylinder body (2) and connection end cover (6) and between the inner wall of guiding hole and piston (4).
4. The dual stage vibration isolation bumper of claim 1, wherein: the side wall of the primary cylinder body (2) is provided with a plug (15).
5. The dual stage vibration isolation bumper of claim 1, wherein: the side wall of the secondary cylinder body (3) is provided with a one-way valve (16).
6. The dual stage vibration isolation bumper of claim 1, wherein: the upper part of the connecting end cover (6) is connected with the inner wall of the first-stage cylinder body (2) through threads.
7. The dual stage vibration isolation bumper of claim 1, wherein: the connecting end cover (6) is fixedly connected with the secondary cylinder body (3) through a plurality of bolts.
8. The dual stage vibration isolation bumper of claim 1, wherein: the upper part of the piston (4) is connected with the guide cylinder (1) through threads.
CN202011166158.8A 2020-10-27 2020-10-27 Two-stage vibration isolation buffer Active CN112253665B (en)

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Publication number Priority date Publication date Assignee Title
CN113007265B (en) * 2021-03-19 2022-06-21 中国人民解放军92578部队 Capsule membrane type molecular spring vibration isolation buffer

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6052992A (en) * 1994-12-09 2000-04-25 D L D International A Part Interest Heterogeneous structure for accumulating or dissipating energy, methods of using such a structure and associated devices
CN103154560A (en) * 2010-09-29 2013-06-12 丰田自动车株式会社 Colloidal damper
CN103587367A (en) * 2012-08-16 2014-02-19 福特全球技术公司 Air spring and damper unit with height adjustment
CN105041949A (en) * 2015-07-24 2015-11-11 南京航空航天大学 Membrane type molecular spring vibration isolation buffer
CN107061594A (en) * 2017-04-05 2017-08-18 长沙理工大学 A kind of spring colloid damper
CN107956835A (en) * 2017-11-10 2018-04-24 南京航空航天大学 Controllable damping molecule spring vehicle suspension

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8770359B2 (en) * 2006-09-06 2014-07-08 School Juridical Person Of Fukuoka Kogyo Daigaku Colloidal damper

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6052992A (en) * 1994-12-09 2000-04-25 D L D International A Part Interest Heterogeneous structure for accumulating or dissipating energy, methods of using such a structure and associated devices
CN103154560A (en) * 2010-09-29 2013-06-12 丰田自动车株式会社 Colloidal damper
CN103587367A (en) * 2012-08-16 2014-02-19 福特全球技术公司 Air spring and damper unit with height adjustment
CN105041949A (en) * 2015-07-24 2015-11-11 南京航空航天大学 Membrane type molecular spring vibration isolation buffer
CN107061594A (en) * 2017-04-05 2017-08-18 长沙理工大学 A kind of spring colloid damper
CN107956835A (en) * 2017-11-10 2018-04-24 南京航空航天大学 Controllable damping molecule spring vehicle suspension

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