CN212336379U

CN212336379U - Rotary friction energy dissipater

Info

Publication number: CN212336379U
Application number: CN202020641135.7U
Authority: CN
Inventors: 周云; 李定斌; 丁超; 邓雪松; 张超
Original assignee: Guangzhou University
Current assignee: Guangzhou University
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2021-01-12
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a rotary friction energy dissipater, which comprises a first rotary component, a second rotary component, a plurality of friction plates and a plurality of fasteners; the first rotating component comprises a first connecting plate and a first clamping plate, and the second rotating component comprises a second connecting plate and a second clamping plate; the first clamping plates and the second clamping plates are sequentially connected in parallel at intervals in a rotating mode, the friction plates are arranged between the first clamping plates and the second clamping plates in a laminating mode, and the fasteners are arranged in parallel at intervals and sequentially penetrate through the second clamping plates, the friction plates and the first clamping plates; the first clamping plate and the second clamping plate are used as centers, and the first clamping plate is provided with a plurality of circular arc through holes for the fasteners to pass through. The utility model discloses a rotational friction energy consumer can make the fastener slide along the circular arc through-hole when first connecting piece and second connecting piece receive rotational deformation, and dissipation seismic energy alleviates engineering structural damage.

Description

Rotary friction energy dissipater

Technical Field

The utility model relates to a building structure power consumption component, concretely relates to rotation friction energy consumer.

Background

Earthquake disasters threaten the safety of human lives and properties, and the energy dissipation and shock absorption technology is a limited means for relieving the earthquake disasters to protect the building engineering structure. The energy dissipation and shock absorption technology is that extra energy dissipaters are arranged in the structure to absorb earthquake energy, so that main structural members are protected, and damage is reduced.

Energy dissipation and shock absorption devices according to structural deformation in the prior art can be divided into the following categories: the axial type and the shearing type, namely the energy dissipation and shock absorption device consumes energy by utilizing the axial deformation and the shearing deformation in the structure. For example: the buckling restrained brace utilizes axial deformation between two points of the structure to promote metal materials to yield and further consume energy; the metal shear plate energy dissipater utilizes relative shear deformation between an upper floor and a lower floor to promote metal materials to yield and further dissipate energy. However, due to the increasing complexity of the engineering structures in the prior art, the structural members are also subjected to a great deal of rotational deformation in addition to axial and shear deformation under the action of earthquake. Energy dissipation damping device among the prior art can't utilize the rotational deformation of structural component to dissipate seismic energy.

Therefore, it is desirable to develop an energy dissipater capable of dissipating seismic energy using rotational deformation of a structural member.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a rotational friction energy dissipation ware, this rotational friction energy dissipation ware can enough utilize the rotational deformation dissipation seismic energy of structure, alleviates engineering structure damage, and is convenient for inspect and change.

In order to achieve the above object, the present invention provides a rotational friction energy dissipater, which comprises a first rotational component, a second rotational component, a plurality of friction plates and a plurality of fasteners;

the first rotating component comprises a first connecting plate and at least one first clamping plate arranged on the first connecting plate, and the second rotating component comprises a second connecting plate and at least two second clamping plates arranged on the second connecting plate in parallel at intervals;

the first clamping plates and the second clamping plates are sequentially connected in parallel, at intervals and in a rotating mode, the friction plates are arranged between the first clamping plates and the second clamping plates in a fitting mode, and the fasteners are arranged in parallel at intervals and sequentially penetrate through the second clamping plates, the friction plates and the first clamping plates;

the first clamping plate and the second clamping plate are used as centers, a plurality of circular arc through holes for the fasteners to pass through are formed in the first clamping plate, and the fasteners can selectively slide along the circular arc through holes.

Preferably, the number of the friction plates is equal to the number of the first clamping plates plus the number of the second clamping plates minus one.

Preferably, the number of the second clamping plates is 1 more than that of the first clamping plates on the first connecting plate, and the plurality of first clamping plates are respectively inserted into the intervals of the plurality of second clamping plates.

Preferably, the fastener is a pre-tightening bolt, and the end part of the pre-tightening bolt is sequentially provided with a check washer and a pre-tightening nut.

Preferably, the clamping device further comprises a pin shaft, each first clamping plate and each second clamping plate are provided with a central hole, and the pin shaft is rotatably installed in the central holes.

Preferably, the arc length of the center line of the circular arc through hole is set to be L, the distance from the center line of the circular arc through hole to the center hole is set to be R, and the relative radian that the first clamping plate and the second clamping plate can rotate around the circular pin shaft under the structural vibration is set to be D, so that L is greater than D R.

As a preferred scheme, a plurality of circular arc through holes are uniformly formed in the first clamping plate by taking the central hole as a center, a plurality of first mounting holes corresponding to the circular arc through holes are uniformly formed in the second clamping plate by taking the central hole as a center, a plurality of second mounting holes corresponding to the first mounting holes are formed in the friction plate, a plurality of fasteners are arranged, and each fastener sequentially penetrates through the first mounting holes, the second mounting holes and the circular arc through holes.

Preferably, the number of the circular arc through holes is 2, 3, 5 or 6.

Preferably, the friction plate is made of polytetrafluoroethylene, metal alloy or asbestos-free organic matter, or is made of a composite friction material.

Preferably, at least one first clamping plate is arranged, and the first clamping plate and the first connecting plate are fixedly and vertically arranged; the second splint be at least two, two the second splint with the fixed perpendicular arrangement of second connecting plate, first splint with the second splint board is crossing arrangement, first splint with second splint parallel arrangement.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a rotational friction energy dissipater, which comprises a first connecting plate, a second connecting plate, at least one first clamping plate, at least two second clamping plates and a plurality of friction plates, wherein the first clamping plate is positioned between the adjacent second clamping plates, and the first clamping plate is in parallel rotational connection with the second clamping plates, so that a first rotating assembly and a second rotating assembly can be in rotational connection; the first connecting plate, the second connecting plate and a component with rotational deformation in the engineering structure are connected, a friction plate is attached between the first clamping plate and the second clamping plate, a plurality of fasteners are arranged in parallel at intervals and sequentially penetrate through the second clamping plate, the friction plate, the first clamping plate and the second clamping plate, so that the first clamping plate and the second clamping plate can be fixedly connected by the fasteners, and meanwhile, the fasteners clamp the first clamping plate and the second clamping plate and can provide prestress for the friction plate; and the rotating points of the first clamping plate and the second clamping plate are taken as centers, the first clamping plate is provided with a plurality of circular arc through holes for the fasteners to pass through, and the fasteners can selectively slide along the circular arc through holes. The utility model discloses a rotational friction energy consumer can receive the rotation that the structural component transmitted when warping at first connecting piece and second connecting piece, makes the fastener slide along the circular arc through-hole to realize dissipation structural energy, avoid earthquake effect framework column and beam column node to take place to destroy.

The rotary friction energy dissipater of the utility model is arranged at the position of the building engineering structure with rotary deformation, can absorb the earthquake energy input into the structure during earthquake action, and reduces the damage of the building engineering structure; the fastener is used for providing prestress, so that the rotary friction energy dissipater has better fatigue resistance under long-term wind load, can generate friction energy dissipation under very small displacement, has good energy dissipation effect, and can well protect the safety of the beam column main body structure; the connecting structure is connected through the fastening piece, so that the installation is convenient in the actual engineering, the using function of the building is not influenced, and the repairing and the replacement are easy after the earthquake; the whole rotating energy dissipater is very simple in structure, convenient to produce and use, reliable in working effect and low in cost.

Drawings

Fig. 1 is a schematic structural view of a rotational friction energy dissipater of the present invention;

fig. 2 is an explosion structure diagram of the rotational friction energy dissipater of the present invention;

fig. 3 is a schematic structural view of a first clamping plate of the rotational friction damper according to the present invention;

fig. 4 is a schematic structural view of a second clamping plate of the rotational friction damper according to the present invention;

FIG. 5 is a schematic structural view of a friction plate.

Wherein:

1. a first central aperture; 2. a second central aperture; 3. a first mounting hole; 4. a central hole of the friction plate; 5. a second mounting hole; 6. a pin shaft; 7. pre-tightening the bolts; 8. pre-tightening the nut; 9. a lock washer; 10. a circular arc through hole; 11. a first connecting plate; 12. a second connecting plate; 13. a first splint; 14. a second splint; 15. a friction plate.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 5, the preferred embodiment of the rotational friction energy dissipater provided by the present invention comprises a first rotational component and a second rotational component, wherein the first rotational component comprises a first connecting plate 11, a second connecting plate 12, at least one first clamping plate 13, at least two second clamping plates 14, at least two friction plates 15 and a plurality of fasteners. In this embodiment, there are one first clamping plate 13, two second clamping plates 14, two friction plates 15, and four fastening members 7; the first connecting plate 11 and the second connecting plate 12 are used for connecting with a structural member. The first clamping plate 13 is positioned between the two second clamping plates 14, namely a layer of connecting plate and a layer of friction plate; the two friction plates 15 are arranged between the first clamping plate 13 and the second clamping plate 14 in a fit mode, and the four fasteners 7 are arranged in parallel at intervals and sequentially penetrate through the second clamping plate 14, the friction plates 15, the first clamping plate 13 and the second clamping plate 14; and the rotating points of the first clamping plate and the second clamping plate are taken as centers, the first clamping plate is provided with a plurality of circular arc through holes for the fasteners to pass through, and the fasteners can selectively slide along the circular arc through holes. The arc through holes are arranged, so that the fasteners can slide along the arc through holes when the first connecting piece and the second connecting piece are subjected to rotational deformation shock force, and the structural energy dissipation and the damage to the frame structural column and the beam column node under the earthquake action are avoided.

The rotary friction energy dissipater of the utility model is arranged in the area where plastic hinges are likely to be generated at the beam end of the frame, is simple and reasonable, and is easy to realize the ductility design requirements of 'strong column and weak beam' and 'strong node and weak member'; the fastener is used for providing prestress for the friction plate 15, so that the early rigidity of the rotational friction damper is effectively increased, wind vibration is controlled, and foundation micro vibration is resisted, the rotational friction damper has better fatigue resistance under long-term wind load, friction energy consumption and shear deformation energy consumption can be generated under very small displacement, the energy consumption effect is better, and the safety of the main body structure of the beam column can be well protected; the connecting structure is connected through the fastening piece 7, so that the installation is convenient in actual engineering, the using function of a building is not influenced, and the repairing and the replacement are easy after the earthquake; the whole rotating energy dissipater is very simple in structure, convenient to produce and use, reliable in working effect and low in cost.

In other embodiments, the first clamping plates 13 are parallel and spaced apart from each other and perpendicular to the 2 first connecting plates, the second clamping plates 14 are parallel and spaced apart from each other and perpendicular to the 3 second connecting plates, the 2 first clamping plates are sequentially overlapped with each other in the space between the 3 second clamping plates 14, and the friction plates 15 are 4 plates, the circular pin 6 and a plurality of fasteners, and are matched with each other to form a rotational friction energy dissipater.

The round pin shaft 6 is vertically arranged in a through hole among the first clamping plate 13, the second clamping plate 14 and the friction plate 15 in a penetrating mode.

Wherein the first clamping plate 13 is perpendicular to the first connecting plate 11, and the second clamping plate 14 is perpendicular to the second connecting plate 12. In order to improve the structural connection stability of the energy dissipater and fully exert the energy dissipation function, the number of the second clamping plates 14 is 1 more than that of the first clamping plates 13 on the first connecting plate 11, the plurality of first clamping plates 13 are respectively inserted into the intervals of the plurality of second clamping plates 14, and in match, the number of the friction plates 15 is equal to the number of the first clamping plates 13 plus the number of the second clamping plates 14 and is reduced by one, so that the friction plates 15 are all arranged between the adjacent first clamping plates 13 and the second clamping plates 14, and the energy dissipation function of rotational friction is realized.

Further, first splint 13 is equipped with first centre bore 1, and two second splint 14 all are equipped with corresponding second centre bore 2, adopt round pin axle 6 to install in first centre bore 1 and second centre bore 2 to make first splint 13 and second splint 14 can rotate and connect. The diameters of the first central bore 1 and the second central bore 2 may be designed according to the requirements of specific rotational dissipative node performance.

The fastening piece 7 is a pre-tightening bolt, and the end part of the pre-tightening bolt sequentially penetrates through the second clamping plate 14, the friction plate 15, the circular arc through hole 10 of the first clamping plate 13, the friction plate 15 and the second clamping plate 14, and then is provided with the anti-loosening gasket 9 and the pre-tightening nut 8 at the end part thereof so as to apply pressure to the first clamping plate 11, the second clamping plate 12 and the friction plate 15 and fixedly connect the first clamping plate 13 and the second clamping plate 14. A check washer 9 is arranged below the pretightening nut 8, and the check washer 9 is used for preventing the nut 8 from loosening to reduce the pressure applied by the pretightening assembly; particularly, the pre-tightening screw rod also penetrates through the arc through hole 10, so that the structure drives the energy dissipater to deform under the vibration condition, and the pre-tightening screw rod 7 moves around the central line of the arc through hole 10 and is not contacted with the arc through hole 10 all the time.

The circular arc through hole 10 of the first clamping plate 14 is characterized by a rotary friction energy dissipater, and the force required by the rotary friction energy dissipater to rotate is released through the circular arc through hole 10 so as to fully play the energy dissipation role of the rotary friction energy dissipater; the width of the circular arc through hole 10 is larger than the diameter of the pre-tightening screw, and the arc length of the center line of the circular arc through hole 10 is set to be L, so that L is larger than D R. Wherein, R is the distance from the center line of the circular arc through hole 10 to the center of the first center hole 1, and D is the relative radian that the first clamping plate 11 and the second clamping plate 12 can rotate around the circular pin shaft under the structural vibration; d is determined by the design results.

The friction plate 15 is made of common friction material, such as polytetrafluoroethylene, metal (copper-zinc, aluminum-magnesium) alloy, asbestos-free organic matter, or composite friction material, such as mixture of polytetrafluoroethylene and lead. The thickness of the friction plate 15 and the size of the friction plate 15 do not need to be specified in this embodiment, and the design is also reasonable according to the performance requirement of the rotational friction energy consumer.

Specifically, one end of the first clamping plate 13, which is far away from the first connecting plate 11, is arc-shaped; one end of the second clamping plate 14 far away from the second connecting plate 13 is arc-shaped. The first clamping plate 13 is evenly provided with four arc through holes 10 by taking the first center hole 1 as a center, the second clamping plate 14 is evenly provided with four first mounting holes 3 corresponding to the arc through holes 10 by taking the second center hole 2 as a center, the pre-tightening bolt 7 penetrates through a reserved friction massage center hole 4 on the friction plate, the friction plate 15 is provided with four second mounting holes 5 corresponding to the first mounting holes 3, the fasteners 7 are four, and the fasteners 7 are respectively matched with the arc through holes 10 penetrating through the first mounting holes 3 and the second mounting holes 5 in sequence. The first mounting hole 3 and the second mounting hole 5 are identical in aperture, and the first center hole 1, the second center hole 2 and the friction plate center hole 4 are identical in aperture. The size of each aperture is selected according to the energy consumption performance of the rotary friction energy dissipater.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A rotary friction energy dissipater is characterized by comprising a first rotary component, a second rotary component, a plurality of friction plates and a plurality of fasteners;

2. A rotary friction dissipative element according to claim 1, wherein the number of friction plates is equal to the number of first clamping plates plus the number of second clamping plates minus one.

3. The rotational friction dissipative element according to claim 1, wherein the number of second clamping plates is 1 more than the number of first clamping plates on the first connecting plate, the plurality of first clamping plates being inserted into the spaces of the plurality of second clamping plates, respectively.

4. The rotational friction dissipative element according to claim 1, wherein the fastening element is a pre-tightening bolt, and the end of the pre-tightening bolt is sequentially provided with a locking washer and a pre-tightening nut.

5. The rotational friction dissipater according to claim 4, further comprising a pin, each of said first clamping plates and each of said second clamping plates having a central aperture, said pin being rotatably mounted in said central aperture.

6. The rotational friction dissipative element according to claim 5, wherein if the arc length of the center line of the circular arc through holes is L, the distance from the center line of the circular arc through holes to the central hole is R, and the relative arc degree that the first clamping plate and the second clamping plate may rotate around the circular pin under the structural vibration is D, then L > D R.

7. The rotary friction damper according to claim 5, wherein said first clamping plate has a plurality of circular arc through holes uniformly formed around said center hole, said second clamping plate has a plurality of first mounting holes uniformly formed around said center hole, said friction plate has a plurality of second mounting holes corresponding to said first mounting holes, said fastening members are provided in plurality, and each of said fastening members is sequentially fitted through said circular arc through holes of said first mounting hole and said second mounting hole.

8. The rotational friction dissipative element according to claim 7, wherein the number of circular arc through holes is 2 or 3 or 5 or 6.

9. A rotational friction dissipative element according to claim 1, wherein the friction plates are of teflon, metal alloys or non-asbestos organics, or of composite friction material.

10. The rotational friction dissipative element according to claim 1, wherein said first clamping plate is at least one, said first clamping plate being fixedly arranged perpendicular to said first connecting plate; the second splint be at least two, two the second splint with the fixed perpendicular arrangement of second connecting plate, first splint with the second splint board is crossing arrangement, first splint with second splint parallel arrangement.