CN213509019U - Composite self-resetting solid-liquid mixed damper - Google Patents
Composite self-resetting solid-liquid mixed damper Download PDFInfo
- Publication number
- CN213509019U CN213509019U CN202021409509.9U CN202021409509U CN213509019U CN 213509019 U CN213509019 U CN 213509019U CN 202021409509 U CN202021409509 U CN 202021409509U CN 213509019 U CN213509019 U CN 213509019U
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- main cylinder
- damping
- guide rod
- composite self
- 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.)
- Active
Links
Images
Abstract
The invention relates to a composite self-resetting solid-liquid mixed damper, which comprises a guide rod, a main cylinder body and an auxiliary cylinder body which are sequentially connected, wherein the guide rod sequentially penetrates through the main cylinder body and the auxiliary cylinder body, viscous damping liquid and damping particles are filled in the main cylinder body, a piston is arranged in the main cylinder body and fixedly arranged on the guide rod, the peripheral side wall of the piston is tightly attached to the inside of the main cylinder body, a plurality of U-shaped memory units are uniformly distributed on the periphery of the guide rod in the auxiliary cylinder body, two branch ends of the U-shaped memory units are respectively connected and fixed with the auxiliary cylinder body and the guide rod, the damper comprehensively utilizes a mixed energy dissipation damping device consisting of solid particles, the viscous liquid and memory alloy, increases the damping frequency band, enhances the energy dissipation and damping effects, improves the energy dissipation efficiency, the memory alloy can realize effective collision of the damping particles and simultaneously can realize the self, the residual deformation of the structure is reduced.
Description
Technical Field
The invention relates to the technical field of energy dissipation and vibration reduction, in particular to a composite self-resetting solid-liquid mixed damper.
Background
The energy dissipation and shock absorption structure is a new structure system formed by adding an energy dissipation and shock absorption device in the structure and an original structure, and the added energy dissipation and shock absorption device can obviously reduce the earthquake action level borne by the original structure, so that the aim of controlling the earthquake response of the structure is fulfilled, and the damage of the main structure is reduced.
The traditional damper (such as a metal damper, a friction damper, a viscous damper and the like) is easy to have the phenomenon of insufficient resetting capability after strong shock, particularly, the residual displacement of the damper is obvious under the action of near-field pulse earthquake, so that the service function of the upper structure is difficult to recover quickly, and the economic cost and the time cost for repairing are high. The traditional viscous damper has poor sealing effect, is easy to leak oil and leak oil, and has larger temperature sensitivity. In addition, the structural response speed has great influence on the performance of the viscous damper, and when the speed is too low, the viscous resistance of the liquid is small, so that the damping effect is difficult to exert.
Most dampers have single action mechanism and limited vibration damping capacity; in addition, some damping devices also have negative effects during use, such as particle damping often lags in response and generates noise, tuned liquid damping provides relatively little additional damping, and so on. The development and development of a novel energy dissipation and vibration reduction device which is simple, convenient and practical to overcome or avoid the defects when the device is used alone have become necessary trends for meeting engineering requirements.
Disclosure of Invention
The invention provides a composite self-resetting solid-liquid mixed damper.
The invention adopts the scheme that the composite self-resetting solid-liquid mixed damper comprises a guide rod, a main cylinder body and an auxiliary cylinder body which are sequentially connected, wherein the guide rod sequentially penetrates through the main cylinder body and the auxiliary cylinder body, viscous damping liquid and damping particles are filled in the main cylinder body, a piston is arranged in the main cylinder body, the piston is fixedly arranged on the guide rod, the peripheral side wall of the piston is tightly attached to the inside of the main cylinder body, a plurality of U-shaped memory alloys are uniformly distributed on the periphery of the guide rod in the auxiliary cylinder body, and two branch ends of the U-shaped memory alloys are respectively connected and fixed with the auxiliary cylinder body and the guide rod.
Furthermore, a metal rubber layer is laid on the inner wall of the main cylinder body.
Furthermore, an opening at one end of the main cylinder body is sealed by the main cylinder cover, an opening at the other end of the main cylinder body is sealed by the connecting piece, one end of the auxiliary cylinder body is opened, an opening end of the auxiliary cylinder body is sealed by the connecting piece, the main cylinder body and the auxiliary cylinder body are connected by the connecting piece, and the guide rail penetrates through the main cylinder cover and the connecting piece.
Furthermore, two branch ends of the U-shaped shape memory alloy are respectively connected with the guide rod and the auxiliary cylinder through bolts.
Furthermore, the two ends inside the main cylinder body are provided with buffer layers, and the piston, the viscous damping liquid and the damping particles are located between the two buffer layers.
Further, the buffer layer is a polyurethane rubber buffer layer.
Furthermore, the volume of the viscous damping fluid is 70% -80% of the volume of the main cylinder, and the volume of the damping particles is 15% -25% of the volume of the main cylinder.
Furthermore, the damping particles are round particles with different sizes, the diameter of the round particles is 10mm-25mm, and the mass ratio of the small round particles to the large round particles is 0.1-0.2.
Further, the number of the U-shaped shape memory alloys is 4.
Furthermore, the guide rod, the main cylinder body and the auxiliary cylinder body are coaxial.
Compared with the prior art, the invention has the following beneficial effects: simple structure, reasonable in design utilizes the mixed energy dissipation damping device that solid particle, viscidity liquid, memory alloy are constituteed comprehensively, increases the damping frequency band, and reinforcing power consumption damping effect, the hole that forms between the damping granule can improve liquid and rock, improves power consumption efficiency, and memory alloy not only can realize that the damping granule produces effective collision, can let the device reach from the function of restoring to the throne after the earthquake simultaneously, reduces the residual deformation of structure.
Drawings
The invention is further described with reference to the following figures.
Fig. 1 is a schematic structural diagram of the damper.
In the figure: 1-a guide rod; 2-main cylinder cover; 3-a buffer layer; 4-main cylinder body; 5-a piston; 6-viscous damping fluid; 7-damping particles; 8-a metal rubber layer; 9-a connector; 10-auxiliary cylinder body; 11-U-shaped shape memory alloy; 12-auxiliary cylinder cover.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in figure 1, a composite self-resetting solid-liquid mixed damper comprises a guide rod 1, a main cylinder body 4 and an auxiliary cylinder body 10 which are sequentially connected, wherein the guide rod sequentially penetrates through the main cylinder body and the auxiliary cylinder body, viscous damping liquid 6 and damping particles 7 are filled in the main cylinder body, a piston 5 is arranged in the main cylinder body, the piston is fixedly arranged on the guide rod, the peripheral side wall of the piston is tightly attached to the inside of the main cylinder body, a plurality of U-shaped memory alloys 11 are uniformly distributed on the periphery of the guide rod in the auxiliary cylinder body, two branch ends of the U-shaped memory alloys are respectively connected and fixed with the auxiliary cylinder body and the guide rod, the U-shaped memory alloys can enable the damping particles to move through restoring force, energy consumption in an effective collision way is realized, and meanwhile, the movement frequency of the damping particles is tuned with a fundamental frequency by setting relevant parameters (such as thickness, width and diameter) of the U-, and the vibration reduction and energy consumption efficiency is improved.
In this embodiment, the inner wall of the main cylinder body is laid with a metal rubber layer 8, and the metal rubber layer is made of copper wires, aluminum wires or memory alloy wires.
In this embodiment, the opening at one end of the main cylinder body is sealed by the main cylinder cover, the opening at the other end of the main cylinder body is sealed by the connecting piece 9, the opening at one end of the auxiliary cylinder body is sealed by the auxiliary cylinder cover 12, the opening end of the auxiliary cylinder body is sealed by the connecting piece, the main cylinder body and the auxiliary cylinder body are connected by the connecting piece, and the guide rail penetrates through the main cylinder cover, the connecting piece and the auxiliary cylinder cover.
In this embodiment, the two branch ends of the U-shaped shape memory alloy are connected with the guide rod and the sub-cylinder by bolts, respectively.
In this embodiment, the inside both ends of master cylinder body all are provided with buffer layer 3, and piston, viscous damping liquid and damping granule all are located between two buffer layers.
In this embodiment, the buffer layer is a polyurethane rubber buffer layer, which reduces the movement speed of damping particles and reduces the vibration of the device.
In this embodiment, the viscous damping fluid is formed by mixing one or more damping fluids with different viscosity coefficients, can be layered or mixed, and can oscillate in the main cylinder, the volume of the viscous damping fluid is 70% -80% of the volume of the main cylinder, the damping particles are driven to move by the oscillation of the viscous damping fluid, meanwhile, the oscillation of the viscous damping fluid provides restoring force for the structure on the side pressure of the container, the vibration amplitude of the structure is reduced, the volume of the damping particles is 15% -25% of the volume of the main cylinder, and under the action of wind or earthquake, the energy generated by the wind or earthquake is absorbed and dissipated by collision, friction between the damping particles and the continuous oscillation of the viscous damping fluid.
In this embodiment, the types and volumes of the viscous damping fluid and the damping particles can be adjusted according to the practical application, wherein the physical properties of the viscous damping fluid require heat resistance, non-volatility, non-flammability, stable chemical properties, and the viscosity coefficient depends on the energy consumption capability required by the controlled structure.
In this embodiment, the damping particles are round particles with different sizes, the round particles are metal particles, such as steel balls and copper balls, or the round particles are polymer material spheres with a certain friction performance, the diameter of the round particles is 10mm-25mm, and the mass ratio of the small round particles to the large round particles is 0.1-0.2.
In this embodiment, the number of the U-shaped shape memory alloys is 4.
In this embodiment, the guide rod, the main cylinder and the auxiliary cylinder are coaxial.
In this embodiment, the main cylinder and the auxiliary cylinder are made of 45# steel seamless steel tubes, the outer surfaces of the main cylinder and the auxiliary cylinder are plated with nickel to enhance durability, the guide rod is made of 40cr, the outer surfaces of the guide rod are plated with hard chrome to enhance corrosion resistance, and the U-shaped shape memory alloy is preferably made of superelastic NiTi.
In the embodiment, the bearing capacity characteristic of the U-shaped shape memory alloy is mainly determined by the width b, the thickness t and the diameter D of the U-shaped shape memory alloy, the deformation range is related to the length h, the bearing capacity and the deformation capacity of the damper and the tuning of the motion frequency and the structural fundamental frequency of the damping particles can be determined by changing the width b, the thickness t, the diameter D and the length h of the U-shaped shape memory alloy, and further different anti-seismic design requirements are met.
In this embodiment, when damping device takes place the vibration, viscous damping fluid takes place the motion, will drive the motion of damping granule simultaneously, the rocking of viscous damping fluid, can regard as the structural recovery power to the side pressure of container, reduce structure motion amplitude, the hole between the damping granule plays the lattice effect simultaneously, increase liquid viscidity, improve the power consumption ability, consume the energy through constantly colliding with the friction between the damping granule, but frictional energy dissipation between this in-process viscous damping fluid self constitution molecule, but viscous damping fluid and damping granule frictional energy dissipation, but mutual collision energy dissipation between the damping granule.
In the embodiment, the motion of the damping particles continuously collides and rubs with the metal rubber layer and the buffer layer, on one hand, the energy generated by vibration and friction can be converted into heat to be absorbed by the viscous damping fluid, so that the aim of reducing the structural vibration is achieved, and the temperature of the device is not too high; on the other hand, the metal rubber layer and the buffer layer are subjected to the collision of the damping particles, so that the metal rubber layer and the buffer layer play a vibration damping role, the energy returning to an external mechanism is greatly reduced, and the structural vibration is reduced.
In this embodiment, after the viscous damping fluid and the damping particles are determined, the U-shaped shape memory alloy (parameters such as thickness, width, and diameter) can be designed according to the dynamic characteristics of the controlled structure, so that the damping particles and the controlled structure can move in a tuned manner, thereby achieving a better damping effect.
The damper can realize the self-resetting effect after the earthquake, the using function of the structure is not interrupted, the structure is not required to be reinforced, repaired or replaced, a large amount of economic cost and time cost are saved, the economic effect is obvious, the restorability of the structure after the earthquake can be effectively and quickly integrally improved, and the damper has a wide application prospect in the fields of building structures and bridge engineering.
The damper adopts the shape memory alloy of the U-shaped plate, essentially utilizes the self-resetting capability of the U-shaped plate shape memory alloy in the bending deformation process, simultaneously, the shape memory alloy material provides energy consumption for the damper at the early stage of an earthquake and before the earthquake is finished, the plastic deformation point of the U-shaped plate shape memory alloy in the bending deformation process continuously expands and changes, the performance of the material is fully utilized, and the service life of the material is prolonged.
If this patent discloses or refers to parts or structures that are fixedly connected to each other, the fixedly connected may be understood as: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In the description of this patent, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent, and are not intended to indicate or imply that the referenced devices or components must have the particular orientations, constructions and operations in the particular orientations, and therefore, are not to be considered limiting of the patent.
The above-mentioned preferred embodiments, further illustrating the objects, technical solutions and advantages of the present invention, should be understood that the above-mentioned are only preferred embodiments of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a compound is from mixed attenuator of reset solid-liquid which characterized in that: the damping cylinder comprises a guide rod, a main cylinder body and an auxiliary cylinder body which are connected in sequence, wherein the guide rod sequentially penetrates through the main cylinder body and the auxiliary cylinder body, viscous damping liquid and damping particles are filled in the main cylinder body, a piston is arranged in the main cylinder body, the piston is fixedly installed on the guide rod, the peripheral side wall of the piston is tightly attached to the inside of the main cylinder body, a plurality of U-shaped memory alloys are uniformly distributed on the periphery of the guide rod in the auxiliary cylinder body, and two branch ends of the U-shaped memory alloys are respectively connected and fixed with the auxiliary cylinder body and the guide.
2. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: and a metal rubber layer is laid on the inner wall of the main cylinder body.
3. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: the opening of one end of the main cylinder body is sealed by the main cylinder cover, the opening of the other end of the main cylinder body is sealed by the connecting piece, one end of the auxiliary cylinder body is opened, the opening end of the auxiliary cylinder body is sealed by the connecting piece, the main cylinder body and the auxiliary cylinder body are connected by the connecting piece, and the guide rod penetrates through the main cylinder cover and the connecting piece.
4. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: and two branch ends of the U-shaped shape memory alloy are respectively connected with the guide rod and the auxiliary cylinder through bolts.
5. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: the inside both ends of main cylinder body all are provided with the buffer layer, and piston, viscous damping fluid and damping granule all are located between two buffer layers.
6. The composite self-resetting solid-liquid hybrid damper according to claim 5, characterized in that: the buffer layer is a polyurethane rubber buffer layer.
7. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: the volume of the viscous damping fluid is 70% -80% of the volume of the main cylinder, and the volume of the damping particles is 15% -25% of the volume of the main cylinder.
8. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: the damping particles are round particles with different sizes, the diameter of the round particles is 10mm-25mm, and the mass ratio of the small round particles to the large round particles is 0.1-0.2.
9. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: the number of the U-shaped shape memory alloys is 4.
10. The composite self-resetting solid-liquid hybrid damper according to claim 1, characterized in that: the guide rod, the main cylinder body and the auxiliary cylinder body are coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021409509.9U CN213509019U (en) | 2020-07-17 | 2020-07-17 | Composite self-resetting solid-liquid mixed damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021409509.9U CN213509019U (en) | 2020-07-17 | 2020-07-17 | Composite self-resetting solid-liquid mixed damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213509019U true CN213509019U (en) | 2021-06-22 |
Family
ID=76434910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021409509.9U Active CN213509019U (en) | 2020-07-17 | 2020-07-17 | Composite self-resetting solid-liquid mixed damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213509019U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163723A (en) * | 2022-08-11 | 2022-10-11 | 甘肃盛宏建筑工程有限责任公司 | Magnetorheological variable damping vibration attenuation energy dissipation device |
-
2020
- 2020-07-17 CN CN202021409509.9U patent/CN213509019U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163723A (en) * | 2022-08-11 | 2022-10-11 | 甘肃盛宏建筑工程有限责任公司 | Magnetorheological variable damping vibration attenuation energy dissipation device |
| CN115163723B (en) * | 2022-08-11 | 2023-06-09 | 甘肃盛宏建筑工程有限责任公司 | Magneto-rheological variable damping vibration attenuation energy consumption device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209429304U (en) | A kind of double rank sliding friction dampers of brace type | |
| CN213509019U (en) | Composite self-resetting solid-liquid mixed damper | |
| CN108331193A (en) | A kind of square sleeve cartridge type Self-resetting metal friction damper | |
| CN108301676B (en) | Multi-dimensional combined type bearing type anti-seismic joint device | |
| CN208870215U (en) | A kind of cylinder tension and compression damper with limit reset function | |
| CN108708475A (en) | Barrel type tension and compression damper | |
| CN108798181A (en) | A kind of combined type energy-consumption damper | |
| CN103806568B (en) | Steel lead lamination porous power consumption plate | |
| CN206667518U (en) | A kind of shearing-type mild steel damper with shear thickening liquid | |
| CN208748878U (en) | More buffering energy-consumption formulas reset damper | |
| CN208870212U (en) | Sublevel energy consumption anti-seismic damper | |
| CN108951926A (en) | The tension and compression damper of built-in circle mild-steel energy-consumption inner cylinder | |
| CN113322782B (en) | Welding-free shape memory alloy double-tube shearing energy dissipation device filled with rubber | |
| CN108678509A (en) | Mild-steel energy-consumption formula damper | |
| CN214698935U (en) | Shock insulation damper with liquid and particles | |
| CN208734177U (en) | Barrel type tension and compression damper | |
| CN208748887U (en) | The tension and compression damper of built-in circle mild-steel energy-consumption inner cylinder | |
| CN208441589U (en) | A kind of cydariform extruding energy-consumption damper | |
| CN108708474A (en) | Sublevel energy consumption anti-seismic damper | |
| CN206608496U (en) | A kind of two grades of U-shaped damping alloy vibration absorbers | |
| CN208749205U (en) | Multi-direction damping, buffering sublevel energy-consumption damper | |
| CN211398398U (en) | Spherical damper | |
| CN112855828B (en) | Shock absorption damper for high-pile wharf | |
| CN215253510U (en) | Assembled connected node | |
| CN105221650B (en) | A kind of damping device and its application method for electrical equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |