CN111962701A - Self-resetting lead friction-viscoelasticity composite damper and working method thereof - Google Patents
Self-resetting lead friction-viscoelasticity composite damper and working method thereof Download PDFInfo
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- CN111962701A CN111962701A CN202010815279.4A CN202010815279A CN111962701A CN 111962701 A CN111962701 A CN 111962701A CN 202010815279 A CN202010815279 A CN 202010815279A CN 111962701 A CN111962701 A CN 111962701A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- Vibration Dampers (AREA)
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Abstract
The invention relates to a self-resetting lead friction-viscoelasticity composite damper and a working method thereof, and the self-resetting lead friction-viscoelasticity composite damper comprises a vertical groove-shaped steel plate and an inner steel plate which is positioned in the groove-shaped steel plate and can slide up and down relative to the groove-shaped steel plate, wherein a spring assembly for pushing the inner steel plate to reset is connected between the upper end of the inner steel plate and the groove-shaped steel plate; the inner steel plate is embedded with a lead core penetrating through a bottom plate of the groove-shaped steel plate; a pair of friction steel plates which move up and down by the inner steel plate are arranged on two sides of the middle part of the inner steel plate, and the outward end of each friction steel plate is fixedly connected with a friction material layer attached to the inner wall of the side plate of the groove-shaped steel plate; and a pair of shearing steel plates driven by the friction steel plate above to move up and down are arranged on two sides of the lower end of the inner steel plate, and the shearing steel plates are connected with the side plates of the groove-shaped steel plates through viscoelastic material layers. The composite damper is simple in structure and convenient to produce and install, three energy dissipation mechanisms of lead core energy dissipation, friction energy dissipation and viscoelasticity energy dissipation are combined, staged energy dissipation is fully achieved, and energy dissipation capacity of the damper is improved.
Description
Technical Field
The invention relates to a self-resetting lead friction-viscoelasticity composite damper and a working method thereof.
Background
There has been little research on composite dampers that can combine self-resetting variable friction with other dissipative mechanisms. In 2017, 20.06.7.20.A patent of invention (publication number: CN 106869570A) of a self-resetting rocker type friction-changing composite damper is issued by the State intellectual Property office, the invention relates to a self-resetting rocker type friction-changing composite damper, two sections of bolt slot slideways penetrating through an outer pipe are arranged on the outer pipe of the self-resetting rocker type friction-changing composite damper, a connecting key is arranged at the left end of the outer pipe, a sliding bolt assembly is arranged in the bolt slot slideways of the outer pipe, an elastic body is arranged on the inner pipe, hooks are arranged at two ends of the elastic body and are respectively hung on limiting bolts of the sliding bolt assembly, so that the inner pipe and the outer pipe are tightly connected together, a friction viscoelastic assembly is connected on the inner wall of the outer pipe through bolts, a fixed hinged support assembly is arranged on the outer wall of the inner pipe, and a. The technical scheme has the defects that the composite damper is complex in structure, the small spring at the warping position is easy to damage, and the energy consumption of the composite damper is mainly dependent on friction energy consumption on the whole, but the friction energy consumption effect is limited, and more composite energy consumption mechanisms are provided.
Disclosure of Invention
In view of the above, the present invention provides a self-resetting lead friction-viscoelasticity composite damper with simple structure and easy production and installation, and a working method thereof, which realizes staged energy consumption and improves the energy consumption capability of the damper.
The invention is realized by adopting the following scheme: a self-resetting lead friction-viscoelasticity composite damper comprises a vertical groove-shaped steel plate and an inner steel plate which is positioned in the groove-shaped steel plate and can slide up and down relative to the groove-shaped steel plate, wherein a spring assembly for pushing the inner steel plate to reset is connected between the upper end of the inner steel plate and the groove-shaped steel plate; the inner steel plate is embedded with a lead core penetrating through a bottom plate of the groove-shaped steel plate; a pair of friction steel plates which move up and down by the inner steel plate are arranged on two sides of the middle part of the inner steel plate, and the outward end of each friction steel plate is fixedly connected with a friction material layer attached to the inner wall of the side plate of the groove-shaped steel plate; and a pair of shearing steel plates driven by the friction steel plate above to move up and down are arranged on two sides of the lower end of the inner steel plate, and the shearing steel plates are connected with the side plates of the groove-shaped steel plates through viscoelastic material layers.
Furthermore, the friction steel plate is arc towards the middle one end, and the inner steel plate side is provided with a pair of arc-shaped protruding parts opposite to the arc-shaped end of the friction steel plate, and the two arc-shaped protruding parts clamp the arc-shaped end of the friction steel plate in the middle.
Furthermore, the lower side of the friction steel plate is provided with a transmission steel plate which extends downwards and is used for driving the shearing steel plate to move, the lower end of the transmission steel plate is provided with a hook part, and the upper side of the shearing steel plate is connected with a hook plate which is in hook joint with the hook part of the transmission steel plate.
Furthermore, the spring assembly comprises a pair of reset springs positioned on two sides of the upper end of the inner steel plate, the upper end of the inner steel plate is connected with an upper end plate of the reset spring connected with the upper ends of the springs on two sides, and the inner walls of the side plates on two sides of the groove-shaped steel plate are fixedly connected with a lower end plate of the spring connected with the lower end of the reset spring.
Furthermore, the upper end part and the lower end part of the inner steel plate are respectively provided with a sliding pore channel, and a bolt connected to the bottom plate of the groove-shaped steel plate is arranged in the vertical pore channel in a penetrating manner.
The working method of the self-resetting lead friction-viscoelasticity composite damper comprises the steps that the energy consumption of a lead core is cut when the inner steel plate and the groove-shaped steel plate are in relative displacement, then the arc-shaped protruding portion of the inner steel plate enables the friction steel plate to move relative to the groove-shaped steel plate or has the tendency of moving relative to the groove-shaped steel plate, the friction material layer is forced to extrude a side plate of the groove-shaped steel plate to generate friction energy consumption, and the friction steel plate drives the shear steel plate to move after being subjected to positioning displacement so as to cut the viscoelasticity material energy.
Compared with the prior art, the invention has the following beneficial effects: the self-resetting lead friction-viscoelasticity composite damper is simple in structure and convenient to produce and install, three energy consumption mechanisms of lead core energy consumption, friction energy consumption and viscoelasticity energy consumption are combined, staged energy consumption is fully realized, and the energy consumption capability of the damper is improved.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to specific embodiments and accompanying drawings.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a transverse cross-sectional view of an embodiment of the present invention;
the reference numbers in the figures illustrate: 1-groove-shaped steel plate, 2-reset spring, 3-friction material layer, 4-friction steel plate, 5-viscoelastic material layer, 6-inner steel plate, 7-upper spring end plate, 8-bolt, 9-lower spring end plate, 10-lead core, 11-transmission steel plate, 12-shearing steel plate, 13-sliding pore channel, 14-hook plate and 15-arc-shaped bulge.
Detailed Description
As shown in fig. 1-2, the self-resetting lead friction-viscoelasticity composite damper comprises a vertical groove-shaped steel plate 1 and an inner steel plate 6 which is positioned in the groove-shaped steel plate 1 and can slide up and down relative to the groove-shaped steel plate, wherein a spring assembly for pushing the inner steel plate to reset is connected between the upper end of the inner steel plate 6 and the groove-shaped steel plate 1, and the spring assembly has a self-resetting function and can drive the inner steel plate to reset; the inner steel plate 6 is embedded with a lead core 10 penetrating through the bottom plate of the groove-shaped steel plate, the inner steel plate and the bottom plate of the groove-shaped steel plate are provided with lead core holes which correspond in position and are used for containing the lead core, and the lead core holes are tightly matched with the lead core 10; a pair of friction steel plates 4 which move up and down by the inner steel plates are arranged on two sides of the middle part of the inner steel plate 6, and a friction material layer 3 which is attached to the inner wall of the side plate of the groove-shaped steel plate 1 is fixedly connected to the outward end of each friction steel plate 4; a pair of shearing steel plates 12 driven by the upper friction steel plate 4 to move up and down are arranged on two sides of the lower end of the inner steel plate 6, the shearing steel plates 12 are connected with the side plates of the channel-shaped steel plate 1 through viscoelastic material layers 5, the viscoelastic material layers 5 are made of high-damping rubber, lead has good plastic deformation capacity and deformation recoverable characteristics, and the high-damping rubber has unique hyperelasticity, larger deformation recovery capacity than common metal and good mechanical property; meanwhile, a large amount of steel is used, so that the manufacturing is convenient and the manufacturing cost is low. The viscoelastic material layer 5, the side plate of the channel steel plate and the shearing steel plate are fixedly connected together by high-temperature vulcanization, and the friction material layer and the friction steel plate 4 are also fixedly connected together by high-temperature vulcanization; under the action of small shock, the inner steel plate and the groove-shaped steel plate shear the lead core when in relative displacement and consume energy, then the inner steel plate enables the friction steel plate to move relative to the groove-shaped steel plate or has the trend of moving relative to the groove-shaped steel plate, the friction material layer and the side plate of the groove-shaped steel plate generate friction energy consumption, and under the action of large shock, the friction steel plate moves and drives the shear steel plate to shear the viscoelastic material and consume energy.
The self-resetting composite damper combines the functions of a lead damper, a friction damper and a viscoelastic damper, adopts a self-resetting spring assembly, fully realizes staged energy consumption, improves the energy consumption capability of the damper, realizes the self-resetting composite damper with lead core energy consumption, friction energy consumption and viscoelastic energy consumption through a simple structure, has simple structure, is convenient to produce and install, and can be installed between beams and columns or combined to a support for use.
In this embodiment, 4 one ends are the arc towards the centre of friction steel sheet, 6 sides of interior steel sheet are provided with a pair of arc bellying 15 relative with friction steel sheet arc end, two arc bellying 15 hold the arc of friction steel sheet between the centre, through the interact between two arcwalls, interior steel sheet is when driving the relative flute profile steel sheet motion of friction steel sheet or having the trend of relative flute profile steel sheet motion, can force the curb plate of friction steel sheet extrusion flute profile steel sheet, and then increase frictional force, through the changeable pressure of extrusion transmission, thereby produce changeable frictional force.
In this embodiment, 4 downside of friction steel sheet are provided with downwardly extending and are used for driving the transmission steel sheet 11 of cuting 12 activities of steel sheet, 11 lower extremes of transmission steel sheet are provided with hook portion, and 12 upsides of cuting steel sheet are connected with the hook portion hookup complex drag hook plate 14 with the transmission steel sheet, leave the determining deviation between 11 lower extremes of transmission steel sheet and the cuting steel sheet, and also leave the determining deviation between the hook portion of transmission steel sheet and the hook portion of drag hook plate for the friction steel sheet just begins to drive the steel sheet motion after producing certain motion, further improves energy consumption effect stage by stage.
In this embodiment, the spring assembly includes a pair of reset spring 2 that is located interior steel sheet upper end both sides, and interior steel sheet upper end is connected with the reset spring upper end plate 7 of being connected with both sides spring upper end, and the spring lower end plate 9 that is connected with the reset spring lower extreme is fixedly connected with to trough-shaped steel sheet both sides curb plate inner wall.
In this embodiment, the upper end portion and the lower end portion of the inner steel plate are respectively provided with a sliding hole 13, a bolt 8 connected to the bottom plate of the channel-shaped steel plate penetrates through the vertical hole, and the guide effect of the movement of the inner steel plate is realized through the cooperation of the bolt 8 and the sliding hole 13.
The working method of the self-resetting lead friction-viscoelasticity composite damper comprises the steps that under the action of small shock, the lead core is sheared to consume energy when the inner steel plate and the groove-shaped steel plate are in relative displacement, then the arc-shaped protruding portion of the inner steel plate enables the friction steel plate to move relative to the groove-shaped steel plate or has the tendency of moving relative to the groove-shaped steel plate, the friction material layer is forced to extrude a side plate of the groove-shaped steel plate to generate friction energy consumption, and under the action of large shock, the friction steel plate drives the shearing steel plate to move after being positioned and moved, and then the viscoelasticity material is sheared.
The invention adds other energy consumption mechanisms on the basis of self-reset friction-to-friction energy consumption, combines the energy consumption mechanisms together well, has simple structure and has good staged energy consumption effect.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the invention discloses or relates to parts or structures which are fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: 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 addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (6)
1. A self-resetting lead friction-viscoelasticity composite damper is characterized in that: the device comprises a vertical groove-shaped steel plate and an inner steel plate which is positioned in the groove-shaped steel plate and can slide up and down relative to the groove-shaped steel plate, wherein a spring assembly for pushing the inner steel plate to reset is connected between the upper end of the inner steel plate and the groove-shaped steel plate; the inner steel plate is embedded with a lead core penetrating through a bottom plate of the groove-shaped steel plate; a pair of friction steel plates which move up and down by the inner steel plate are arranged on two sides of the middle part of the inner steel plate, and the outward end of each friction steel plate is fixedly connected with a friction material layer attached to the inner wall of the side plate of the groove-shaped steel plate; and a pair of shearing steel plates driven by the friction steel plate above to move up and down are arranged on two sides of the lower end of the inner steel plate, and the shearing steel plates are connected with the side plates of the groove-shaped steel plates through viscoelastic material layers.
2. The self-resetting lead friction-viscoelastic composite damper according to claim 1, characterized in that: the friction steel plate is arc towards middle one end, and the inner steel plate side is provided with a pair of arc bellying relative with friction steel plate arc end, and the arc end clamp of two arc bellying with the friction steel plate is in the middle of.
3. The self-resetting lead friction-viscoelastic composite damper according to claim 1 or 2, characterized in that: the friction steel plate downside is provided with the downwardly extending and is used for driving the transmission steel plate that cuts the steel sheet activity, the transmission steel plate lower extreme is provided with hook portion, cuts the steel sheet upside and is connected with the hook portion hookup complex hook plate with the transmission steel plate.
4. The self-resetting lead friction-viscoelastic composite damper according to claim 1, characterized in that: the spring assembly comprises a pair of reset springs positioned on two sides of the upper end part of the inner steel plate, the upper end of the inner steel plate is connected with an upper end plate of the reset spring connected with the upper ends of the springs on two sides, and the inner walls of the side plates on two sides of the groove-shaped steel plate are fixedly connected with a lower end plate of the spring connected with the lower end of the reset spring.
5. The self-resetting lead friction-viscoelastic composite damper according to claim 1, characterized in that: and the upper end part and the lower end part of the inner steel plate are respectively provided with a sliding pore passage, and a bolt connected to the bottom plate of the channel-shaped steel plate is penetrated in the vertical pore passage.
6. A method of operating the self-resetting lead friction-viscoelastic composite damper of claim 2, wherein: the energy consumption of the lead core is cut when the inner steel plate and the groove-shaped steel plate are in relative displacement, then the arc-shaped protruding part of the inner steel plate enables the friction steel plate to move relative to the groove-shaped steel plate or has the trend of moving relative to the groove-shaped steel plate, so that the friction material layer is forced to extrude a side plate of the groove-shaped steel plate to generate friction energy consumption, and the friction steel plate drives the shear steel plate to move after being in positioning displacement so as to cut the viscoelastic material energy consumption.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010815279.4A CN111962701B (en) | 2020-08-14 | 2020-08-14 | Self-resetting lead friction-viscoelasticity composite damper and working method thereof |
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| CN202010815279.4A CN111962701B (en) | 2020-08-14 | 2020-08-14 | Self-resetting lead friction-viscoelasticity composite damper and working method thereof |
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| CN111962701B CN111962701B (en) | 2021-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411786A (en) * | 2020-11-26 | 2021-02-26 | 西安建筑科技大学 | Orthogonal waveform slotted steel plate grading energy dissipation damper with viscoelastic material |
| CN112922182A (en) * | 2021-01-28 | 2021-06-08 | 武汉工程大学 | Self-resetting variable-damping variable-rigidity viscoelastic and friction composite damper |
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| JP2017078434A (en) * | 2015-10-19 | 2017-04-27 | 株式会社ビービーエム | Structural vibration damper |
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| CN110080409A (en) * | 2019-05-14 | 2019-08-02 | 江苏科技大学 | A kind of combined recoverable metal damper of fricting shearing |
| CN111350291A (en) * | 2020-03-23 | 2020-06-30 | 湖北文理学院 | Variable-damping variable-rigidity viscoelastic-friction composite damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104929263A (en) * | 2015-06-23 | 2015-09-23 | 东南大学 | Assembled lead-foamed aluminum composite damper for building vibration reduction |
| JP2017078434A (en) * | 2015-10-19 | 2017-04-27 | 株式会社ビービーエム | Structural vibration damper |
| CN207846742U (en) * | 2018-01-24 | 2018-09-11 | 西京学院 | A kind of spring-lead material Self-resetting friction energy consuming device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112411786A (en) * | 2020-11-26 | 2021-02-26 | 西安建筑科技大学 | Orthogonal waveform slotted steel plate grading energy dissipation damper with viscoelastic material |
| CN112411786B (en) * | 2020-11-26 | 2021-12-07 | 西安建筑科技大学 | Orthogonal waveform slotted steel plate grading energy dissipation damper with viscoelastic material |
| CN112922182A (en) * | 2021-01-28 | 2021-06-08 | 武汉工程大学 | Self-resetting variable-damping variable-rigidity viscoelastic and friction composite damper |
| CN112922182B (en) * | 2021-01-28 | 2022-04-19 | 武汉工程大学 | Self-resetting variable-damping variable-rigidity viscoelastic and friction composite damper |
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