CN112253672A - Double-material type spring vibration isolation buffer - Google Patents
Double-material type spring vibration isolation buffer Download PDFInfo
- Publication number
- CN112253672A CN112253672A CN202011166155.4A CN202011166155A CN112253672A CN 112253672 A CN112253672 A CN 112253672A CN 202011166155 A CN202011166155 A CN 202011166155A CN 112253672 A CN112253672 A CN 112253672A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- vibration isolation
- cylinder
- piston
- main piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
-
- 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
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/19—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein with a single cylinder and of single-tube 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
- F16F9/3207—Constructional features
-
- 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
- F16F9/36—Special sealings, including sealings or guides for piston-rods
- F16F9/366—Special sealings, including sealings or guides for piston-rods functioning as guide only, e.g. bushings
-
- 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
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
- F16F9/443—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction manually adjusted while the damper is fully retracted or extended in a non-operational mode by rotating mechanical means that have engaged between the piston and one end of the cylinder
-
- 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
-
- 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
- F16F2238/00—Type of springs or dampers
- F16F2238/02—Springs
- F16F2238/026—Springs wound- or coil-like
Abstract
A double-material spring vibration isolation buffer belongs to the technical field of vibration isolation buffers. The invention solves the problems that the piston stroke of the existing molecular spring vibration isolation buffer is short, hydrophobic particles adopted in the buffer are easy to rub against the piston, and the bearing capacity is inconvenient to adjust. The main piston and the secondary piston are arranged on the inner side and the outer side of the second guide cylinder in a sliding mode, the pre-tightening spring sleeve is arranged on the secondary piston, the bottom end of the pre-tightening spring sleeve abuts against the top end of the pre-tightening block, the lower portion of the main piston is located in the cylinder body, the outer side of the main piston is sleeved with the annular plate, the main piston is arranged in the annular end cover in a sliding mode, the annular plate is located below the annular end cover, a closed cavity is formed in the cylinder body through the annular end cover, the main piston and the second guide cylinder, a hydrophobic porous material layer is laid inside the. Water and the hydrophobic porous material layer are sealed in the hydraulic container to obtain the molecular spring, and the water molecules enter and exit the nanoscale hydrophobic holes under high pressure to complete energy conversion and loss, so that vibration isolation buffer protection of the equipment is realized.
Description
Technical Field
The invention relates to a double-material spring vibration isolation buffer, and belongs to the technical field of vibration isolation buffers.
Background
With the development of the field of machine manufacturing, modern engineering technology no longer separately pursues high power and high rotation speed, and the vibration impact of equipment also draws wide attention. Mechanical vibration can not only produce noise, but also cause fatigue failure of components, reducing the service life of the equipment. The passive vibration isolation equipment has been widely applied due to the advantages of simple principle, 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 complete energy conversion and loss, the problem that the traditional passive buffer device cannot achieve both low natural frequency and small static deformation under heavy load is solved, and the novel vibration isolation buffer has the rigidity characteristics of high static and low dynamic.
In the existing novel molecular spring vibration isolation buffer, a liquid-solid mixed medium consisting of 'water-hydrophobic porous particles' is used as a medium for providing elastic restoring force, so that the piston stroke is short, and due to the vibration of the piston in the working process, the hydrophobic particles are uncertain in the water and are easy to rub against the piston and even block the open pore of the piston; meanwhile, the bearing capacity of the vibration isolation buffer is changed by adding inorganic salt or surfactant into the aqueous medium, and the defects of inconvenient, discontinuous and uncontrollable adjustment exist.
Disclosure of Invention
The invention provides a double-material spring vibration isolation buffer, aiming at solving the problems that the piston stroke of the existing molecular spring vibration isolation buffer is short, hydrophobic particles adopted in the buffer are easy to rub against the piston, and the bearing capacity is inconvenient to adjust.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a double-material spring vibration isolation buffer comprises a first guide cylinder, a cylinder body, a second guide cylinder, a main piston, a fastening nut, a secondary piston, a pre-tightening block and a pre-tightening spring, wherein the first guide cylinder is coaxially sleeved outside the cylinder body, the fastening nut is coaxially and fixedly arranged inside the first guide cylinder, the fastening nut is in threaded connection with the upper portion of the main piston, a groove with a downward opening is formed in the lower portion of the main piston, the secondary piston is coaxially arranged in the groove, the second guide cylinder is coaxially and fixedly arranged inside the cylinder body, the main piston and the secondary piston are respectively arranged on the inner side and the outer side of the second guide cylinder in a vertical sliding mode, a threaded hole is formed in the lower portion of the second guide cylinder, the pre-tightening block is in threaded connection with the threaded hole, the pre-tightening spring is sleeved on the secondary piston, and the bottom end of the pre-tightening spring,
the lower portion of the main piston is located in the cylinder body, an annular plate is coaxially sleeved on the outer side of the main piston, an annular end cover is fixedly mounted at the top end of the cylinder body, the main piston penetrates through the annular end cover in an up-and-down sliding mode, the annular plate is located below the annular end cover, a closed cavity is formed in the cylinder body through the annular end cover, the main piston and the second guide cylinder, a hydrophobic porous material layer is laid in the cylinder body, and the hydrophobic porous material layer and a water medium contained in the cavity form a molecular spring.
Further, a sleeve is coaxially and fixedly arranged on the outer side of the cylinder body, a first buffer rubber ring is arranged between the sleeve and the first guide cylinder, and a second buffer rubber ring is arranged between the sleeve and the cylinder body.
Furthermore, the hydrophobic porous material layer comprises a hydrophobic metal organic framework material layer and a hydrophobic silica gel material layer vertical to the hydrophobic metal organic framework material layer.
Further, hydrophobic metal organic framework material layer water tiling is established in the cylinder body bottom, the vertical laying in cylinder body inner wall in hydrophobic silica gel material layer.
Furthermore, the ring plate is in clearance fit with the inner wall of the cylinder body, and a plurality of vertical through holes are uniformly formed in the ring plate along the circumferential direction of the ring plate.
Further, a third buffer rubber ring is installed at the top end of the second guide cylinder, and a fourth buffer rubber ring is installed above the annular end cover.
Further, the first guide cylinder comprises an inner cylinder and an outer cylinder which are coaxially arranged, the inner cylinder is sleeved on the upper portion of the main piston, a fastening nut is fixedly arranged on the inner cylinder, and the outer cylinder is sleeved on the cylinder body.
Furthermore, the secondary piston is of a stepped shaft structure, and the upper end of the pre-tightening spring is arranged on the stepped surface of the secondary piston in a propping mode.
Furthermore, the annular end cover is fixedly connected with the cylinder body through a plurality of bolts.
Further, a one-way valve is installed on the side wall of the cylinder body.
Compared with the prior art, the invention has the following effects:
through the matching of the mechanical spring and the molecular spring, the bearing capacity is variable while the vibration isolation and buffering are reliable; the adjustable mechanical spring can provide different supporting forces according to the bearing conditions; water and a hydrophobic porous material layer are sealed in a hydraulic container to obtain a molecular spring, water molecules enter and exit a nanoscale hydrophobic hole under high pressure to complete energy conversion and loss, vibration isolation buffer protection of equipment is realized, compared with irregular hydrophobic particles, the uniformly laid hydrophobic porous material layer greatly increases the stroke of a piston, the working section range of the molecular spring is improved, and more stable and reliable vibration isolation, vibration reduction and buffer effects can be realized; the double-material spring buffer has the obvious characteristics of high static and low dynamic, has the working characteristics of strong bearing capacity, low working rigidity and automatic limiting, and can bear certain lateral impact load.
Drawings
FIG. 1 is a main cross-sectional schematic view of the present application;
FIG. 2 is a schematic front view of the present application;
FIG. 3 is a schematic top view of the present application;
FIG. 4 is a schematic sectional view taken along line A-A of FIG. 2;
FIG. 5 is a schematic view of the segmental operational stiffness of the present application.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 5, and a two-material spring vibration isolation buffer includes a first guide cylinder 1, a cylinder body 2, a second guide cylinder 3, a main piston 4, a fastening nut 5, a secondary piston 6, a pre-tightening block 7 and a pre-tightening spring 8, wherein the first guide cylinder 1 is coaxially sleeved outside the cylinder body 2, the fastening nut 5 is coaxially and fixedly installed inside the first guide cylinder 1, the fastening nut 5 is screwed on the upper portion of the main piston 4, the lower portion of the main piston 4 is provided with a groove with a downward opening, the secondary piston 6 is coaxially installed in the groove, the second guide cylinder 3 is coaxially and fixedly installed inside the cylinder body 2, the main piston 4 and the secondary piston 6 are respectively slidably installed on the inner side and the outer side of the second guide cylinder 3 up and down, the lower portion of the second guide cylinder 3 is provided with a threaded hole, the pre-tightening block 7 is screwed in the threaded hole, the pre-tightening spring 8 is sleeved on the secondary piston 6 and the bottom end of the pre-tightening block,
the lower portion of the main piston 4 is located in the cylinder body 2, an annular plate 9 is coaxially sleeved on the outer side of the main piston 4, an annular end cover 10 is fixedly mounted at the top end of the cylinder body 2, the main piston 4 is installed in the annular end cover 10 in a vertically sliding mode, the annular plate 9 is located below the annular end cover 10, a closed cavity is formed in the cylinder body 2 through the annular end cover 10, the main piston 4 and the second guide cylinder 3, a hydrophobic porous material layer is laid in the cylinder body 2, and the hydrophobic porous material layer and a water medium contained in the cavity form a molecular spring.
The first guide cylinder 1 is in sliding fit with the annular end cover 10 and the first guide cylinder 1 is in sliding fit with the cylinder body 2.
Fastening nut 5 and 4 threaded connection of main piston, first guide cylinder is arranged on fastening nut 5, passes through fastening nut 5 with external load and transmits for main piston 4, through adjusting the position of fastening nut 5 on main piston 4, realizes the vertical regulation of first guide cylinder 1, can be according to the nimble bearing height who adjusts the vibration isolation buffer of external environment.
The secondary piston 6 is in sliding fit with the second guide cylinder 3. The secondary piston 6 and the primary piston 4 can be fixedly connected or non-fixedly connected, in order to facilitate processing and installation of the primary piston and the secondary piston, the secondary piston and the primary piston are preferably in non-fixed connection, and under the condition of non-fixed connection, the secondary piston 6 is in contact with the bottom end of the groove of the primary piston 4 under the action of the pre-tightening spring 8.
The threaded hole is of a threaded through hole structure, the bottom of the pre-tightening block 7 is provided with a hexagonal through hole, the position of the pre-tightening block 7 in the threaded hole can be conveniently adjusted by matching with a wrench, and then the compression amount of the pre-tightening spring 8 is adjusted to provide different pre-supporting forces, so that the effect of flexibly adjusting the bearing capacity is achieved.
The ports at the two ends of the pre-tightening spring 8 are cut flat, polished and coated with lubricating grease, so that the pre-tightening block 7 can be conveniently screwed.
The limit position of the upward movement of the main piston 4 is limited by the annular end cover 10 and the annular plate 9.
The hydrophobic porous material layer is divided into a hydrophobic metal organic framework material layer 14 and a hydrophobic silica gel material layer 15 which are orthogonally laid, and vibration isolation and buffering effects are respectively realized. The hydrophobic porous material layer has high porosity and is easy to shape, so that the laying shape, the laying layer number and the laying area can be freely changed according to the structure of the cylinder body 2.
The molecular spring has no material aging and corrosion problems and is reliable in operation; the mechanical spring is simple to disassemble and convenient to maintain.
The main piston 4 and the secondary piston 6 are respectively arranged on the inner side and the outer side of the second guide cylinder 3 in a vertically sliding manner, and play a role in isolating and sealing.
The molecular spring and the pre-tightening spring are independent from each other and do not influence each other, so that the working reliability of the equipment is greatly enhanced. The two are in parallel connection, when the external load is larger than the bearing capacity of the molecular spring, extra pre-supporting force can be increased by changing the compression amount of the pre-tightening spring, and the flexible and variable bearing capacity is realized.
And sealing rings are respectively arranged between the annular end cover 10 and the main piston 4, between the inner wall of the groove of the main piston 4 and the outer wall of the second guide cylinder 3 and between the annular end cover 10 and the cylinder body 2, so that a sealing effect is achieved.
Through the cooperation of mechanical spring and molecular spring, realized bearing capacity variable when the vibration isolation buffering is reliable: in the working process, the deformation of the mechanical spring and the entrance and exit of water molecules into and from the nanoscale hydrophobic holes under high pressure are utilized to complete the energy conversion and loss, so that the vibration isolation and buffer protection of equipment are realized, and compared with irregular hydrophobic particles, the uniform hydrophobic porous material layer can realize more stable and reliable vibration isolation, vibration reduction and buffer effects; meanwhile, the stroke of the piston is greatly increased, and the working section range of the molecular spring is improved; the double-material spring buffer has the obvious characteristics of high static and low dynamic, has the working characteristics of strong bearing capacity, low working rigidity and automatic limiting, and can bear certain lateral impact load. The vibration isolator is particularly suitable for the field of heavy-load low-frequency vibration isolation.
A sleeve 11 is coaxially and fixedly arranged on the outer side of the cylinder body 2, a first buffer rubber ring 12 is arranged between the sleeve 11 and the first guide cylinder 1, and a second buffer rubber ring 13 is arranged between the sleeve 11 and the cylinder body 2. The vibration isolation buffer can bear certain lateral impact load under the action of the buffer rubber ring. 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 hydrophobic porous material layer comprises a hydrophobic metal organic framework material layer 14 and a hydrophobic silica gel material layer 15 vertical to the hydrophobic metal organic framework material layer 14. The hydrophobic metal organic framework material almost consumes no energy in the working process and plays a role in vibration isolation, and the hydrophobic silica gel material plays a role in buffering due to hysteresis during loading and unloading, so that the vibration isolation buffering function which is more stable and reliable to protected equipment can be realized through the cooperation of the hydrophobic metal organic framework material and the hydrophobic silica gel material.
Hydrophobic metal organic framework material layer 14 level is laid in cylinder body 2 bottom, hydrophobic silica gel material layer 15 is vertical to be laid at cylinder body 2 inner wall.
The annular plate 9 is in clearance fit with the inner wall of the cylinder body 2, and a plurality of vertical through holes 9-1 are uniformly formed in the annular plate 9 along the circumferential direction of the annular plate. Ensuring smooth operation of the main piston 4.
The top end of the second guide cylinder 3 is provided with a third buffer rubber ring 16, and a fourth buffer rubber ring 17 is arranged above the annular end cover 10. The limiting buffer function is achieved, and the parts are effectively prevented from being rubbed.
The first guide cylinder 1 comprises an inner cylinder 1-1 and an outer cylinder 1-2 which are coaxially arranged, the inner cylinder 1-1 is sleeved on the upper portion of a main piston 4, a fastening nut 5 is fixedly arranged on the inner cylinder 1-1, and the outer cylinder 1-2 is sleeved on a cylinder body 2. The inner cylinder 1-1 is in clearance fit with the main piston 4. A top plate is fixedly arranged at the top end of the first guide cylinder 1, and four threaded holes are uniformly distributed in the top plate and used for being connected with external equipment.
The secondary piston 6 is of a stepped shaft structure, and the upper end of the pre-tightening spring 8 is arranged on the stepped surface of the secondary piston 6 in a propping mode.
The annular end cover 10 is fixedly connected with the cylinder body 2 through a plurality of bolts. The number of the bolts is preferably four, the bolts are uniformly distributed in an annular shape, a sealing ring is arranged between the annular end cover 10 and the cylinder body 2, and a spring gasket is arranged between each bolt and the annular end cover 10.
The side wall of the cylinder 2 is fitted with a check valve 18. By providing a one-way valve 18, a suitable pressure is introduced into the closed chamber.
The working principle is as follows:
the proper pressure is introduced into the closed cavity of the cylinder body 2 through the one-way valve 18, so that the molecular spring is in a subcritical state.
The positions of the fastening nut 5 and the pre-tightening block 7 are adjusted according to external bearing conditions, and proper bearing height and pre-bearing force are provided.
After the pressure of the main piston 4 begins to bear, the pressure is increased continuously, but the pre-bearing force provided by the secondary piston 6 and water cannot be overcome, so that the device has high rigidity, and the stage is called as a bearing section.
With the increasing of the external pressure, the main piston 4 overcomes the pre-bearing force and starts to compress the water medium downwards, and the rigidity of the molecular spring is adjusted in advance through the one-way valve 18, so that the water medium quickly reaches the critical pressure and starts to invade the nano-scale hydrophobic holes of the hydrophobic porous material layer, and the invasion process follows the Laplace capillary pressure equation:
P＝-2γcosθ/r
i.e. the amount of capillary force that the aqueous medium needs to overcome, is related to the pore size r, the surface tension gamma of the water and the contact angle theta of the liquid-solid interface.
Because the water molecules invade the hydrophobic silica gel material layer 15 and have hysteresis phenomena and need consume energy, and the invasion of the hydrophobic metal organic framework material layer 14 hardly needs to consume energy, the process can realize good vibration isolation and buffering effects, the rigidity of the device is sharply reduced, and the stage is called as a working stage.
When the guide cylinder reaches the limit position or the hydrophobic porous material layer is saturated, no water enters the nanoscale hydrophobic holes 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 process of the above process. Thus, as shown in fig. 5, the dual-material spring isolation damper of the present application exhibits a "high-low-high" segmental stiffness characteristic.
This application can adjust bearing capacity in advance in a flexible way to make the device show the characteristic of high static rigidity, low dynamic stiffness in the course of the work, overcome low natural frequency and little static deformation problem that can not get simultaneously under the heavy load, the specially adapted low frequency heavy load field.
The adjustable mechanical spring is provided, and the main piston 4 of the adjustable mechanical spring can provide flexible and variable supporting force to adapt to different bearing conditions; the different types of hydrophobic porous material layers are orthogonally paved inside the closed cylinder body 2, and form a molecular spring with a water medium, so that more stable and reliable vibration isolation buffering is provided compared with irregular hydrophobic particles. Meanwhile, the vibration isolation buffer also has the capabilities of bearing height adjustment and resisting lateral impact load.
Claims (10)
1. The utility model provides a two material formula spring vibration isolation buffers which characterized in that: the guide cylinder comprises a first guide cylinder (1), a cylinder body (2), a second guide cylinder (3), a main piston (4), a fastening nut (5), a secondary piston (6), a pre-tightening block (7) and a pre-tightening spring (8), wherein the first guide cylinder (1) is coaxially sleeved outside the cylinder body (2), the fastening nut (5) is coaxially and fixedly arranged inside the first guide cylinder (1), the fastening nut (5) is in threaded connection with the upper portion of the main piston (4), the lower portion of the main piston (4) is provided with a groove with a downward opening, the secondary piston (6) is coaxially arranged in the groove, the second guide cylinder (3) is coaxially and fixedly arranged inside the cylinder body (2), the main piston (4) and the secondary piston (6) are respectively arranged on the inner side and the outer side of the second guide cylinder (3) in an up-and-down sliding manner, the lower portion of the second guide cylinder (3) is provided with a threaded hole, and the pre-tightening block (7) is in the threaded hole, the pre-tightening spring (8) is sleeved on the secondary piston (6) and the bottom end of the pre-tightening spring is propped against the top end of the pre-tightening block (7),
the lower part of the main piston (4) is positioned in the cylinder body (2), the outer side of the main piston is coaxially sleeved with a ring plate (9), an annular end cover (10) is fixedly arranged at the top end of the cylinder body (2), the main piston (4) slides up and down to penetrate through the annular end cover (10) and the ring plate (9) is positioned below the annular end cover (10), a closed cavity is formed in the cylinder body (2) through the annular end cover (10), the main piston (4) and the second guide cylinder (3), a hydrophobic porous material layer is laid in the cylinder body (2), and the hydrophobic porous material layer and a water medium contained in the cavity form a molecular spring.
2. The dual-material spring vibration isolation damper according to claim 1, wherein: a sleeve (11) is coaxially and fixedly arranged on the outer side of the cylinder body (2), a first buffer rubber ring (12) is arranged between the sleeve (11) and the first guide cylinder (1), and a second buffer rubber ring (13) is arranged between the sleeve (11) and the cylinder body (2).
3. A two-piece spring isolation damper as claimed in claim 1 or 2, wherein: the hydrophobic porous material layer comprises a hydrophobic metal organic framework material layer (14) and a hydrophobic silica gel material layer (15) perpendicular to the hydrophobic metal organic framework material layer (14).
4. The dual-material spring vibration isolation damper according to claim 3, wherein: hydrophobic metal organic framework material layer (14) level is laid in cylinder body (2) bottom, hydrophobic silica gel material layer (15) are vertically laid at cylinder body (2) inner wall.
5. The dual-material spring vibration isolation damper according to claim 1, 2 or 4, wherein: the ring plate (9) is in clearance fit with the inner wall of the cylinder body (2), and a plurality of vertical through holes (9-1) are uniformly formed in the ring plate (9) along the circumferential direction of the ring plate.
6. The dual-material spring vibration isolation damper according to claim 1, wherein: a third buffer rubber ring (16) is installed at the top end of the second guide cylinder (3), and a fourth buffer rubber ring (17) is installed above the annular end cover (10).
7. The dual-material spring vibration isolation damper according to claim 1, 2, 4 or 6, wherein: the first guide cylinder (1) comprises an inner cylinder (1-1) and an outer cylinder (1-2) which are coaxially arranged, the inner cylinder (1-1) is sleeved on the upper portion of the main piston (4), the fastening nut (5) is fixedly arranged on the inner cylinder (1-1), and the outer cylinder (1-2) is sleeved on the cylinder body (2).
8. The dual-material spring vibration isolation damper according to claim 1, wherein: the secondary piston (6) is of a stepped shaft structure, and the upper end of the pre-tightening spring (8) is arranged on the stepped surface of the secondary piston (6) in a propping mode.
9. A two-piece spring vibration isolation bumper as defined in claim 1, 2, 4, 6 or 8 wherein: the annular end cover (10) is fixedly connected with the cylinder body (2) through a plurality of bolts.
10. The dual-material spring vibration isolation damper according to claim 9, wherein: a one-way valve (18) is arranged on the side wall of the cylinder body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166155.4A CN112253672B (en) | 2020-10-27 | 2020-10-27 | Double-material type spring vibration isolation buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011166155.4A CN112253672B (en) | 2020-10-27 | 2020-10-27 | Double-material type spring vibration isolation buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112253672A true CN112253672A (en) | 2021-01-22 |
| CN112253672B CN112253672B (en) | 2022-03-08 |
Family
ID=74261173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011166155.4A Active CN112253672B (en) | 2020-10-27 | 2020-10-27 | Double-material type spring vibration isolation buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112253672B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909432A (en) * | 2022-04-24 | 2022-08-16 | 中国人民解放军92578部队 | Three-body capsule membrane type molecular spring vibration isolator and assembling method |
| CN117028827A (en) * | 2023-10-09 | 2023-11-10 | 中太海碳(上海)环保科技有限公司 | Fixing module of low-temperature film storage container and low-temperature film storage container |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828960A (en) * | 1955-01-24 | 1958-04-01 | Siam | Fluid suspension system for vehicles |
| JP2005121091A (en) * | 2003-10-15 | 2005-05-12 | Takuzo Iwatsubo | Colloidal damper |
| CN203442037U (en) * | 2013-07-31 | 2014-02-19 | 南京航空航天大学 | Molecule spring vibration isolation buffering device |
| CN105041949A (en) * | 2015-07-24 | 2015-11-11 | 南京航空航天大学 | Membrane type molecular spring vibration isolation buffer |
| CN106801716A (en) * | 2017-04-05 | 2017-06-06 | 陈前 | A kind of Mechanical molecular spring vibration isolation buffer unit |
-
2020
- 2020-10-27 CN CN202011166155.4A patent/CN112253672B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2828960A (en) * | 1955-01-24 | 1958-04-01 | Siam | Fluid suspension system for vehicles |
| JP2005121091A (en) * | 2003-10-15 | 2005-05-12 | Takuzo Iwatsubo | Colloidal damper |
| CN203442037U (en) * | 2013-07-31 | 2014-02-19 | 南京航空航天大学 | Molecule spring vibration isolation buffering device |
| CN105041949A (en) * | 2015-07-24 | 2015-11-11 | 南京航空航天大学 | Membrane type molecular spring vibration isolation buffer |
| CN106801716A (en) * | 2017-04-05 | 2017-06-06 | 陈前 | A kind of Mechanical molecular spring vibration isolation buffer unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114909432A (en) * | 2022-04-24 | 2022-08-16 | 中国人民解放军92578部队 | Three-body capsule membrane type molecular spring vibration isolator and assembling method |
| CN114909432B (en) * | 2022-04-24 | 2023-05-23 | 中国人民解放军92578部队 | Three-body capsule type molecular spring vibration isolator and assembly method |
| CN117028827A (en) * | 2023-10-09 | 2023-11-10 | 中太海碳(上海)环保科技有限公司 | Fixing module of low-temperature film storage container and low-temperature film storage container |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112253672B (en) | 2022-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112253672B (en) | Double-material type spring vibration isolation buffer | |
| EP3605545B1 (en) | Bottom foot for household appliance, and household appliance | |
| CN103671676A (en) | Viscous damper | |
| US10738932B2 (en) | Foot for household appliance and household appliance | |
| US10808349B2 (en) | Support for household appliance, and household appliance | |
| EP3604852A1 (en) | Bottom foot for household appliance, and household appliance | |
| KR20020049528A (en) | Shock absorber | |
| CN112901699B (en) | Buffer element and power head buffer device with same | |
| CN105840725B (en) | Screw vibration-damping vibration isolator | |
| CN204921827U (en) | Speed displacement twin -lock voltage limiting formula viscous damper | |
| WO2017016405A1 (en) | Molecular spring vibration isolation buffer | |
| CN217481839U (en) | Viscous damper capable of adjusting effective area of piston | |
| CN107327537B (en) | Buffer tank shock absorber | |
| CN112253665B (en) | Two-stage vibration isolation buffer | |
| CN212388335U (en) | Self-anchoring and self-charging type adjustable hydraulic fluid damper | |
| CN114635942A (en) | Self-adaptive damping device for structural vibration reduction | |
| CN212335746U (en) | Self-resetting SMA-viscous vibration reduction damper | |
| CN208123333U (en) | A kind of piston rod damping aligning | |
| CN208981114U (en) | A kind of fluid viscous damper adding free inching gear | |
| CN203656014U (en) | Viscous damper | |
| CN203604530U (en) | Shock absorber | |
| CN112324834A (en) | Bridge engineering is with liquid viscous damper convenient to installation | |
| CN111173884A (en) | Vibration suppression device of heading machine | |
| CN215928220U (en) | Damping device for precise four-column hydraulic cutting machine | |
| CN220850213U (en) | Microminiature hydraulic cylinder buffer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |