CN112502306B - Composite damper - Google Patents

Composite damper Download PDF

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Publication number
CN112502306B
CN112502306B CN202010913861.4A CN202010913861A CN112502306B CN 112502306 B CN112502306 B CN 112502306B CN 202010913861 A CN202010913861 A CN 202010913861A CN 112502306 B CN112502306 B CN 112502306B
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China
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pieces
piece
hinged
rods
bolt
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CN112502306A (en
Inventor
国巍
方文彬
侯文崎
李婌
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Central South University
National Engineering Laboratory for High Speed Railway Construction Technology
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Central South University
National Engineering Laboratory for High Speed Railway Construction Technology
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings

Abstract

The invention discloses a composite damper, relating to the technical field of anti-seismic instruments, comprising: the energy-saving energy-consuming structure comprises two inner connecting pieces, two outer connecting pieces and a plurality of deformable energy-consuming components; the two inner connecting pieces are mutually rotatably connected, and when the two inner connecting pieces are not subjected to external force, the included angle between the two inner connecting pieces is a, 0 degrees < a <180 degrees, one ends of the two outer connecting pieces are respectively rotatably connected to the two inner connecting pieces, and the ends of the two outer connecting pieces, which are not connected to the inner connecting pieces, are used for being connected with an external member to be damped; two ends of each deformable energy dissipation component are respectively connected to the two inner connecting pieces, a mechanism formed by hinging the two inner connecting pieces can be used as a displacement amplification mechanism of the deformable energy dissipation component, and friction can be generated when the outer connecting piece, the inner connecting pieces and the two inner connecting pieces rotate relatively; the device comprehensively utilizes two energy dissipation mechanisms of metal yielding and friction, has the displacement amplification effect and greatly improves the damping effect of the damper.

Description

Composite damper
Technical Field
The invention relates to the technical field of anti-seismic instruments, in particular to a composite damper.
Background
The earthquake is a natural disaster with extremely strong destructive power, not only can cause various damages, but also can form a disaster chain to induce various secondary disasters, so that researchers are promoted to further research an earthquake-resistant damping technology to reduce the loss of the earthquake to the greatest extent. Over the last three decades, researchers at home and abroad have been greatly developing the research and application of vibration control of civil engineering structures by introducing the concept of vibration control into the anti-seismic design of engineering structures. Energy dissipation and shock absorption are widely applied to shock absorption control of various engineering structures; the types of dampers (energy consuming) researched and developed at present are many, and the dampers mainly comprise metal dampers, friction dampers, viscous dampers, viscoelastic dampers and the like according to the energy consuming mechanism. However, most damper energy dissipation mechanisms currently under development are single, and dissipate only a limited amount of energy when dissipating energy in one way. In addition, in order to obtain a high energy consumption capability of the damper, the size of the damper must be increased accordingly, which causes further encroachment of the building space and causes a problem in space utilization. Meanwhile, when the damper cannot be arranged between layers due to the limitation of the space on the building function, the damper can only utilize small displacement at the corner of the beam column, and at the moment, the material of the damper can not be fully utilized, so that the energy consumption effect of the damper is limited, and the damping effect of the damper cannot be fully exerted.
Disclosure of Invention
The invention aims to provide a composite damper, which is used for solving the problems in the prior art and improving the damping effect of the damper.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a composite damper, comprising: the energy-saving energy-consuming structure comprises two inner connecting pieces, two outer connecting pieces and a plurality of deformable energy-consuming components; the two inner connecting pieces are mutually connected in a rotating mode, when external force is not applied, the included angle between the two inner connecting pieces is a, 0 degrees < a <180 degrees, one ends of the two outer connecting pieces are respectively connected to the two inner connecting pieces in a rotating mode, and the ends, which are not connected to the inner connecting pieces, of the two outer connecting pieces are used for being connected with an external component to be damped; two ends of each deformable energy dissipation component are respectively connected to the two inner connecting pieces, and friction can be generated when the outer connecting piece and the inner connecting pieces and the two inner connecting pieces rotate relatively.
Preferably, the middle parts of the two inner connecting pieces are hinged, the two inner connecting pieces divide a plane into four areas, and the four areas are opposite to each other in pairs;
each outer connecting piece comprises two outer connecting rods, one ends of the two outer connecting rods are hinged to form one outer connecting piece, and the ends, which are not hinged, of the two outer connecting rods in the same outer connecting piece are hinged to the two inner connecting pieces respectively;
the deformable energy dissipation component comprises two deformable energy dissipation components, two ends of each deformable energy dissipation component are hinged to one end of each inner connecting piece, and the two deformable energy dissipation components and the two outer connecting pieces are located in the four areas respectively.
Preferably, the two outer connecting pieces are respectively positioned in two opposite regions; the two deformable energy dissipating members are located in two other opposite regions, respectively.
Preferably, the inner connecting piece comprises two inner connecting rods which are correspondingly arranged up and down, and one end of each outer connecting rod in the same outer connecting piece is rotatably connected between the two inner connecting rods in the two inner connecting pieces.
Preferably, the damping device further comprises two screw rods, a through hole is formed in each of two ends of each of the four outer connecting rods, one screw rod sequentially penetrates through two through holes in one end of each of the outer connecting pieces and forms a hinged structure, and the screw rods are used for being connected with an external damping component to be damped.
Preferably, the connecting device further comprises a plurality of first bolts and a plurality of first nuts, two outer connecting rods in each outer connecting piece are respectively hinged to two inner connecting pieces through the two first bolts and the two first nuts, and the middle parts of the two inner connecting pieces are also hinged to one first nut through one first bolt.
Preferably, the bolt further comprises a plurality of disc springs, one disc spring is arranged between the nut of each first bolt and the inner connecting piece, one disc spring is arranged between each first nut and the inner connecting piece, and each disc spring is sleeved on the first bolt.
Preferably, the energy dissipation device further comprises a plurality of second bolts and a plurality of second nuts, and two ends of each deformable energy dissipation member are respectively hinged to one end of each of the two inner connecting pieces through the two second bolts and the second nut.
Preferably, the bolt further comprises a plurality of friction plates, and each first bolt is sleeved with a plurality of friction plates.
Preferably, the leveling device further comprises a plurality of cushion blocks, the thickness of the cushion blocks is not completely consistent, each cushion block can be sleeved on any one of the first bolts or the second bolts, and the cushion blocks are used for leveling.
Compared with the prior art, the invention has the following technical effects:
the invention provides a composite damper, wherein the whole damper is used as a connecting rod mechanism, wherein one ends of two outer connecting pieces, which are not connected with inner connecting pieces, are used for being connected with an external member to be damped; when the external member to be damped vibrates, the two external connecting pieces are driven to move, so that the two internal connecting pieces are driven to rotate, the distance between the end parts of the two internal connecting pieces is changed, and the deformable energy dissipation members connected to the end parts of the two internal connecting pieces are subjected to plastic deformation under the action of the tensile force of the internal connecting pieces, so that the effect of yielding energy dissipation is achieved; in addition, the outer connecting piece, the inner connecting piece and the two inner connecting pieces can generate friction when rotating relatively, and the friction energy consumption effect is achieved;
in addition, a mechanism formed by hinging two inner connecting pieces can be used as a displacement amplification mechanism of the deformable energy consumption component, and the displacement amplification times are adjusted by changing the relative positions of the connecting points of the outer connecting piece and the inner connecting piece on the inner connecting pieces; therefore, the device comprehensively utilizes two energy dissipation mechanisms of metal yielding and friction, has the displacement amplification effect and greatly improves the damping effect of the damper.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a composite damper according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a left side view of FIG. 1;
FIG. 4 is a schematic structural diagram of the deformable energy dissipating member of FIG. 1;
FIG. 5 is a schematic structural view of the inner connecting rod of FIG. 1;
FIG. 6 is a schematic structural view of the outer connecting rod in FIG. 1;
in the figure: 1-inner connecting rod, 2-outer connecting rod, 3-deformable energy dissipation member, 4-screw rod, 5-cushion block, 6-friction plate, 7-second bolt, 8-first bolt and 9-disc spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a composite damper, which is used for solving the problems in the prior art and improving the damping effect of the damper.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a composite damper, as shown in fig. 1 to 6, comprising: two inner connecting pieces, two outer connecting pieces and a plurality of deformable energy dissipation components 3; the two inner connecting pieces are mutually rotatably connected, and when the two inner connecting pieces are not subjected to external force, the included angle between the two inner connecting pieces is a, 0 degrees < a <180 degrees, one ends of the two outer connecting pieces are respectively rotatably connected to the two inner connecting pieces, and the ends of the two outer connecting pieces, which are not connected to the inner connecting pieces, are used for being connected with an external member to be damped; two ends of each deformable energy dissipation component 3 are respectively connected to two inner connecting pieces, and friction can be generated when the outer connecting pieces and the inner connecting pieces rotate relatively;
the whole damper is used as a link mechanism, when an external member to be damped vibrates, the two external connecting pieces are driven to move, so that the two internal connecting pieces are driven to rotate, and the deformable energy dissipation members 3 connected to the two internal connecting pieces are subjected to plastic deformation under the action of the rotating force of the internal connecting pieces, so that the effect of yielding energy dissipation is achieved; in addition, the outer connecting piece, the inner connecting piece and the two inner connecting pieces can generate friction when rotating relatively, so that the friction energy dissipation effect is achieved, therefore, the device comprehensively utilizes two energy dissipation mechanisms of metal yielding and friction, and the damping effect of the damper is greatly improved.
Furthermore, the middle parts of the two inner connecting pieces are hinged, the two inner connecting pieces divide a plane into four areas, and the four areas are opposite to each other in pairs; each external connecting piece comprises two external connecting rods 2, one ends of the two external connecting rods 2 are hinged to form one external connecting piece, and the ends, which are not hinged, of the two external connecting rods 2 in the same external connecting piece are hinged to the two internal connecting pieces respectively; the energy-saving energy-consuming structure comprises two deformable energy-consuming components 3, wherein two ends of each deformable energy-consuming component 3 are respectively hinged to one end of each of two inner connecting pieces, the two deformable energy-consuming components 3 and two outer connecting pieces are respectively positioned in four areas, and the two outer connecting pieces are respectively positioned in two opposite areas; the two deformable energy dissipation members 3 are respectively positioned in the other two opposite regions, as shown in fig. 2, the two inner connecting pieces are crossed to form an X-shaped structure, the two deformable energy dissipation members 3 are both connected to the tail ends of the inner connecting pieces, a mechanism formed by hinging the two inner connecting pieces can be used as a displacement amplification mechanism, the hinged part of the two inner connecting pieces can be used as a fulcrum, and the displacement amplification times are adjusted by adjusting the distance between the deformable energy dissipation members 3 and the fulcrum; under the condition that the external member to be damped has small displacement, the deformable energy dissipation member 3 can generate obvious yield deformation, so that the energy dissipation effect is improved;
furthermore, the hinged part of the two inner connecting pieces is positioned in the center of the two inner connecting pieces in the length direction, two ends of each deformable energy dissipation member 3 are hinged to the end parts of the two inner connecting pieces respectively, the hinged part of each outer connecting rod 2 and the inner connecting piece is positioned at the 1/4 or 3/4 length of the inner connecting piece, and when a is 90 degrees, the structure can amplify the displacement of the external member to be damped transmitted to the damper to two times and transmit the displacement to the deformable energy dissipation member 3.
Further, the in-connection piece includes two in-connection poles 1 that correspond the setting from top to bottom, also can set up a plurality of in-connection poles 1 that correspond from top to bottom in practical application, so that the power consumption effect is strengthened, two outer connecting rods 2 in the same outer connecting piece are used for rotating and connect between two in-connection poles 1 that the one end of in-connection piece is located respectively in two in-connection pieces, outer connecting rod 2 is located between two in-connection poles 1, when taking place relative rotation, an outer connecting rod 2 can produce sliding friction and play the power consumption effect with two in-connection poles 1 simultaneously.
Further, still include two screw rods 4, a through-hole has all been seted up at the both ends of four outer connecting rods 2, and a screw rod 4 passes the through-hole of two outer connecting rods 2 one ends in an outer connecting piece in proper order and forms hinge structure, and screw rod 4 is used for treating the shock attenuation component with the external world and is connected, and screw rod 4 treats the shock attenuation component with the external world as passing power part and be connected, and is equipped with the screw thread on screw rod 4, and the staff of being convenient for installs this device.
Further, still include the first nut of a plurality of 8 and a plurality of bolts, two outer connecting rods 2 in each outer connecting piece articulate on two inner connecting pieces through two first bolts 8 and two nuts respectively, the middle part of two inner connecting pieces also articulates through a bolt 8 and a nut mutually, as shown in fig. 4 ~ 6, be provided with two through-holes on the outer connecting rod 2, be provided with five through-holes on the inner connecting rod 1, the one end of first bolt 8 passes inner connecting rod 1 and outer connecting rod 2 in proper order and screws the first nut, and the pretightning force that interior connecting rod 1 and outer connecting rod 2 were given to first bolt 8 and first nut can satisfy both and take place relative rotation, because of the atress is great, first bolt 8 and first nut are preferably high strength bolt.
Further, still include a plurality of dish spring 9, all be provided with a dish spring 9 between each first bolt 8's nut and the interconnection union piece, all be provided with a dish spring 9 between each first nut and the interconnection union piece, each dish spring 9 all overlaps and locates on first bolt 8, sets up dish spring 9 so that the staff increases the pretightning force of first bolt 8 and first nut internal connection spare and external connection spare.
Furthermore, the energy-consumption component comprises a plurality of second bolts 7 and a plurality of second nuts, two ends of each deformable energy-consumption component 3 are hinged to one end of each of the two inner connecting pieces through the two second bolts 7 and the second nut, and the second bolts 7 are ordinary bolts.
Further, the friction plate assembly further comprises a plurality of friction plates 6, the thickness of each friction plate 6 is not completely the same, a plurality of friction plates 6 are sleeved on each first bolt 8, a friction plate 6 can be arranged between each outer connecting rod and each inner connecting rod and inside each inner connecting rod to increase friction energy consumption, the friction energy consumption capacity is controlled by changing the friction coefficient between the friction plates 6 and the outer connecting pieces and the inner connecting pieces or changing the pretightening force of the high-strength bolts, the friction plates 6 can be divided into thick friction plates and thin friction plates, and the positions of the thick friction plates and the thin friction plates can be set according to actual conditions in the actual manufacturing process.
The inner and outer connectors do not act as yielding energy dissipating members and therefore require sufficient rigidity; the materials are selected as follows: the deformable energy dissipation component 3 is preferably made of Q235 steel, and the inner connecting rod 1 and the outer connecting rod 2 are preferably made of Q345 steel; the friction plate 6 is preferably brass.
Further, still include a plurality of cushion 5, the thickness of cushion 5 is not complete unanimous, and each cushion 5 can be located on arbitrary first bolt 8 or second bolt 7 by the cover, and cushion 5 is used for the leveling, and the cushion can be divided into connecting rod cushion and energy consumption component cushion.
Further, the deformable energy dissipating member 3 is arc-shaped.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (10)

1. A composite damper is characterized in that: the method comprises the following steps: the energy-saving energy-consuming structure comprises two inner connecting pieces, two outer connecting pieces and a plurality of deformable energy-consuming components; the two inner connecting pieces are mutually connected in a rotating way, and when the two inner connecting pieces are not subjected to external force, the included angle between the two inner connecting pieces is a, and the included angle is 0 degrees < a <180 degrees; two ends of each deformable energy dissipation component are respectively connected to the two inner connecting pieces, and friction can be generated when the outer connecting piece and the inner connecting pieces and the two inner connecting pieces rotate relatively; the two inner connecting pieces divide a plane into four areas, and the four areas are opposite to each other in pairs; each outer connecting piece comprises two outer connecting rods, one ends of the two outer connecting rods are hinged to form one outer connecting piece, and the ends, which are not hinged, of the two outer connecting rods in the same outer connecting piece are hinged to the two inner connecting pieces respectively; and one end of each of the two outer connecting rods in the same outer connecting piece, which is hinged with the other end of the outer connecting rod, is used for being connected with an external member to be damped, and the two outer connecting pieces are respectively positioned in any two areas.
2. A compound damper as claimed in claim 1, wherein: the middle parts of the two inner connecting pieces are hinged and comprise two deformable energy dissipation components, two ends of each deformable energy dissipation component are hinged to one end of each inner connecting piece respectively, and the two deformable energy dissipation components and the two outer connecting pieces are located in the four areas respectively.
3. A compound damper as claimed in claim 2, wherein: the two outer connecting pieces are respectively positioned in the two opposite areas; the two deformable energy dissipating members are located in two other opposite regions, respectively.
4. A compound damper as claimed in claim 2, wherein: the inner connecting piece comprises two inner connecting rods which are correspondingly arranged up and down, and the two outer connecting rods in the same outer connecting piece are used for being rotatably connected between the two inner connecting rods in the inner connecting piece at one ends respectively.
5. A compound damper as claimed in claim 2, wherein: still include two screw rods, four a through-hole, one have all been seted up at the both ends of outer connecting rod the screw rod passes one in proper order two in the outer connecting piece the through-hole of outer connecting rod one end forms hinge structure, the screw rod is used for treating the shock attenuation component with the external world and connects.
6. A compound damper as claimed in claim 2, wherein: the connecting device is characterized by further comprising a plurality of first bolts and a plurality of first nuts, wherein two outer connecting rods in each outer connecting piece are hinged to two inner connecting pieces through the two first bolts and the two first nuts respectively, and the middle parts of the two inner connecting pieces are hinged to one first nut through one first bolt.
7. A compound damper as claimed in claim 6, wherein: the bolt is characterized by further comprising a plurality of disc springs, one disc spring is arranged between the nut of each first bolt and the inner connecting piece, one disc spring is arranged between each first nut and the inner connecting piece, and each disc spring is sleeved on the first bolt.
8. A compound damper as claimed in claim 6, wherein: the deformable energy dissipation component is characterized by further comprising a plurality of second bolts and a plurality of second nuts, and two ends of each deformable energy dissipation component are hinged to one end of each of the two inner connecting pieces through the two second bolts and the second nut.
9. A compound damper as claimed in claim 6, wherein: the first bolt is sleeved with a plurality of friction plates.
10. A compound damper as claimed in claim 8, wherein: the leveling device is characterized by further comprising a plurality of cushion blocks, the thickness of the cushion blocks is not completely consistent, each cushion block can be sleeved on any one of the first bolt or the second bolt, and the cushion blocks are used for leveling.
CN202010913861.4A 2020-09-03 2020-09-03 Composite damper Active CN112502306B (en)

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