CN215926366U - Friction ring-shaped metal composite damper - Google Patents

Abstract

The utility model discloses a friction annular metal composite damper which comprises an internal friction device and an external annular metal yield plate, wherein the outer surfaces of the upper side and the lower side of the annular metal yield plate are respectively connected with an upper connecting plate and a lower connecting plate, the friction device comprises a core plate and a clamping plate which are respectively connected with the inner surfaces of the upper side and the lower side of the annular metal yield plate, a friction plate is arranged in a gap between the core plate and the clamping plate, and the core plate and the clamping plate are movably connected through bolts. The utility model combines the functions of the metal yielding damper and the friction damper to increase the self-adjusting capacity of the damper, the function of the metal yielding damper is realized by the annular metal yielding plate, and the function of the friction damper is realized by the friction device, thereby realizing the staged energy consumption of the damper.

Description

Friction ring-shaped metal composite damper

Technical Field

The utility model relates to the technical field of constructional engineering structure earthquake resistance, in particular to a friction annular metal composite damper.

Background

Earthquake is one of natural disasters, and can cause serious damage to building structures. The traditional earthquake-proof design is to resist earthquake action by enhancing the earthquake-proof performance of the structure, namely, the structure is used for storing and consuming earthquake energy to meet the earthquake fortification standard of the structure: the small earthquake is not damaged, the medium earthquake can be repaired, and the large earthquake is not fallen. However, the anti-seismic mode lacks self-adjusting capability, and the requirement of safety is probably not met under the action of uncertain earthquake. Energy dissipation and shock absorption technology is a new technology which is rapidly developed, and the reaction of a structure under the action of wind and earthquake is reduced by arranging a damper at a proper position of a building structure to increase the damping of the structure. Recent research results have demonstrated that this technique is effective and practical.

At present, many energy-consuming shock absorption devices are available, such as metal yielding dampers, friction dampers, viscous fluid dampers and intelligent dampers. The metal yielding damper mainly absorbs seismic energy by utilizing good plasticity of the metal after yielding, and the friction damper generally dissipates the seismic energy by utilizing the friction characteristic between friction pair surfaces. The two energy consumption devices are common in that the two energy consumption devices can be processed by common metal (such as steel); the damper belongs to the category of a passive control system, and the damper does not need to input external energy; simple material selection, easy processing, stable hysteretic property, easy replacement and the like. The disadvantages are that: the two dampers lack the self-adjusting capability of control force when being used independently, and the control force of the energy dissipater cannot be adjusted according to the reaction characteristic of a building structure under the action of an earthquake. When the building structure is subjected to earthquake action, the destructive force is different, the damper is used as an important energy dissipation device, different control forces are provided according to different earthquake intensities in the aspect of energy consumption, for example, a smaller control force suitable for the small earthquake action can be provided under the small earthquake action, the whole capacity of the energy dissipation device is exerted under the medium earthquake action and the large earthquake action to consume energy, and the main structure is protected in stages.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects existing in the prior art, the utility model provides the friction annular metal composite damper, which realizes the self-adjusting capacity of the damper, achieves the damping control idea of sectional energy consumption, reduces the reaction of a structural system under the action of an earthquake and solves the safety problem of a building structure under the action of the earthquake. The friction damper under the small displacement firstly plays a role in sliding energy consumption, and the annular metal plate on the outer side under the large displacement enters a yielding energy consumption state and jointly exerts the effect of energy consumption together with the friction damper.

In order to achieve the technical effects, the utility model provides a friction annular metal composite damper which comprises an internal friction device and an external annular metal yield plate, wherein the outer surfaces of the upper side and the lower side of the annular metal yield plate are respectively connected with an upper connecting plate and a lower connecting plate, the friction device comprises a core plate and a clamping plate which are respectively connected with the inner surfaces of the upper side and the lower side of the annular metal yield plate, a friction plate is arranged in a gap between the core plate and the clamping plate, and the core plate and the clamping plate are movably connected through bolts.

Preferably, the friction plates are fixed on two sides of the core plate and avoid the position of the bolt.

Preferably, the core plate is provided with bolt holes, the clamping plate is provided with slotted oblong holes along the horizontal direction, and the bolts penetrate through the bolt holes and the slotted oblong holes.

Preferably, a nut is screwed on a screw rod of the bolt, and a gasket and a disc spring are sequentially arranged at the head of the bolt and the inner side of the nut.

Preferably, the upper connecting plate and the lower connecting plate are trapezoidal plates.

Preferably, the number and the position of the core plates are consistent with the alignment of the upper connecting plates.

Preferably, the number and the position of the clamping plates are consistent with the alignment of the lower connecting plate.

Preferably, the side of the upper connecting plate and the side of the lower connecting plate with smaller width are connected to the annular metal yield plate.

Preferably, the wider sides of the upper connecting plate and the lower connecting plate are connected to the upper bottom plate and the lower bottom plate, respectively.

Preferably, the annular metal yielding plate comprises a top plate, a bottom plate and semicircular plates positioned on two sides, wherein the top plate and the bottom plate are arranged in parallel.

The utility model has the advantages that the functions of the metal yielding damper and the friction damper are combined to increase the self-adjusting capacity of the damper, the function of the metal yielding damper is realized by the annular metal yielding plate, and the function of the friction damper is realized by the friction device, so that the staged energy consumption of the damper is realized. This simple structure is practical, and the antidetonation design of easy energy dissipation shock-absorbing structure will more extensive be applied to building structure antidetonation design field.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced 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 based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a friction annular metal composite damper according to an embodiment of the present invention.

Fig. 2 is a schematic view at 1-1 in fig. 1.

Fig. 3 is a schematic view at 2-2 in fig. 1.

Fig. 4 is a schematic plan view of a core board in an embodiment of the present invention.

Fig. 5 is a schematic plan view of a splint according to an embodiment of the present invention.

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.

Referring to fig. 1-5, the utility model provides a friction annular metal composite damper, which is mainly characterized in that the functions of a metal yielding damper and a friction damper are combined to increase the self-adjusting capacity of the damper, the function of the metal yielding damper is realized by an annular metal yielding plate, and the function of the friction damper is realized by a friction device, so that the staged energy consumption of the damper is realized.

Specifically, the friction annular metal composite damper of the embodiment of the utility model mainly comprises a friction device arranged inside and an annular metal yielding plate 12 arranged outside, wherein the annular metal yielding plate 12 is in an oblong shape and is provided with a top plate and a bottom plate which are arranged in parallel up and down, and two semicircular plates which are symmetrically arranged at two sides of the top plate and the bottom plate, and the top plate, the top plate and the two semicircular plates are integrally forged and formed.

The upper surface of the top plate of the annular metal yielding plate 12 is vertically connected to the upper connecting plate 13, the lower surface of the bottom plate of the annular metal yielding plate 12 is vertically connected to the lower connecting plate 14, the top of the upper connecting plate 13 is vertically connected to the upper bottom plate 131, and the bottom of the lower connecting plate 14 is vertically connected to the lower bottom plate 141, wherein the upper connecting plate 13 and the lower connecting plate 14 are used for fixedly connecting a building structure when in use, and the upper bottom plate 131 and the lower bottom plate 141 can be arranged in a reinforced manner.

The friction device can be fixed between the top plate and the bottom of the annular metal yielding plate 12 by referring to the structure of the existing friction damper. Specifically, in the present embodiment, the friction device mainly includes a plurality of core plates 111, a plurality of clamping plates 112, and a plurality of friction plates 113. The number and the position of the core plates 111 are aligned with the upper connecting plates 13, that is, as shown in fig. 3, two upper connecting plates 13 are correspondingly arranged on two core plates 111, the two core plates 111 are parallel to each other and perpendicular to the top plate of the annular metal yield plate 12, the upper ends of the two core plates 111 are fixedly connected to the lower surface of the top plate, and the connecting manner may be welding. The number and the position of the clamping plates 112 are consistent with the alignment of the lower connecting plates 14, that is, as shown in fig. 3, three clamping plates 112 are correspondingly provided with three lower connecting plates 14, the three clamping plates 112 are parallel to each other and are perpendicular to the bottom plate of the annular metal yield plate 12, and the lower ends of the three clamping plates 112 are fixedly connected to the upper surface of the bottom plate, and the connection mode can be welding.

Two core plates 111 are positioned between three clamping plates 112, friction plates 113 are arranged in gaps between the core plates 111 and the clamping plates 112, the core plates 111 and the clamping plates 112 are connected through bolts 114, and the contact surfaces of the clamping plates 112 and the friction plates 113 can be relatively displaced. As shown in fig. 4 and 5, the friction plates 113 are fixed on both sides of the core plate 111 and avoid the positions of the bolts 114, the bolt holes 1111 are formed in the core plate 111, the slotted oblong holes 1121 are formed in the clamping plate 112 in the horizontal direction, the bolts 114 are connected to a nut 117 at the end portions after penetrating through all the bolt holes 1111 and the slotted oblong holes 1121, pre-tightening force is applied by the bolts 114 and the nut 117, so that the surfaces of the core plate 111, the friction plates 113 and the clamping plate 112 are tightly attached, the hole diameters of the bolt holes 1111 in the core plate 111 are equal to or slightly larger than the diameters of the bolts 114, the widths of the slotted oblong holes 1121 in the clamping plate 112 are slightly larger than the diameters of the bolts 114, and the slotted oblong holes 1121 allow the contact surfaces of the clamping plate 112 and the friction plates 113 to horizontally displace relative to each other after the bolts are tightened.

Further, in the present embodiment, as shown in fig. 3, a washer 115 and a belleville spring 116 are sequentially disposed at the head of the bolt 114 and inside the nut 117 thereon to increase the axial preload of the bolt 114.

Furthermore, in the present embodiment, as shown in fig. 1, the upper connecting plate 13 and the lower connecting plate 14 both adopt trapezoidal plates, and meet the characteristics of small bending moment in one section and large stress in one section. The smaller width sides of the upper and lower connection plates 13 and 14 are connected to the annular metal yield plate 12, and the larger width sides of the upper and lower connection plates 13 and 14 are connected to the upper and lower base plates 131 and 141, respectively.

The friction annular metal composite damper is provided with the annular metal yield plate 12 on the outer part and the friction device on the inner part, and can realize a double-step yield state. For example, the slip displacement of the friction device is typically 0.5mm, the yield displacement of the annular metal yielding plate 12 is 5mm, and the yield force of the annular metal yielding plate 12 is greater than the friction load of the friction device. Under the action of an earthquake, the friction device preferentially enters a sliding state to dissipate earthquake energy, and when the movement displacement is further increased to the yield displacement of the annular metal yield plate 12, the annular metal yield plate 12 enters a yield state to further dissipate the earthquake energy, so that the staged energy dissipation of the damper is realized. The damper is simple and practical in structure, easy in seismic design of energy dissipation and shock absorption structures, and capable of being more widely applied to the field of seismic design of building structures.

The parts not involved in the present invention are the same as or can be implemented by the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A friction annular metal composite damper is characterized in that: the friction device comprises a core plate and clamping plates which are respectively connected to the inner surfaces of the upper side and the lower side of the annular metal yielding plate, friction plates are arranged in a gap between the core plate and the clamping plates, and the core plate and the clamping plates are movably connected through bolts.

2. The friction ring metal composite damper of claim 1, wherein: the friction plates are fixed on two sides of the core plate and avoid the position of the bolt.

3. The friction ring metal composite damper of claim 1, wherein: the core plate is provided with bolt holes, the clamping plate is provided with slotted oblong holes in the horizontal direction, and the bolts penetrate through the bolt holes and the slotted oblong holes.

4. The friction ring metal composite damper of claim 3, wherein: the bolt is characterized in that a screw rod of the bolt is screwed with a nut, and a gasket and a disc spring are sequentially arranged at the head of the bolt and the inner side of the nut.

5. The friction ring metal composite damper of claim 1, wherein: the upper connecting plate and the lower connecting plate are trapezoidal plates.

6. The friction ring metal composite damper of claim 5, wherein: the number and the position of the core plates are consistent with those of the upper connecting plates in alignment.

7. The friction ring metal composite damper of claim 5, wherein: the number and the position of the clamping plates are consistent with the alignment of the lower connecting plates.

8. The friction ring metal composite damper of claim 5, wherein: the side, with the smaller width, of the upper connecting plate and the lower connecting plate is connected to the annular metal yielding plate.

9. The friction ring metal composite damper of claim 5, wherein: the side, with larger width, of the upper connecting plate and the lower connecting plate is respectively connected with the upper bottom plate and the lower bottom plate.

10. The friction ring metal composite damper of claim 1, wherein: the annular metal yielding plate comprises a top plate, a bottom plate and semicircular plates, wherein the top plate and the bottom plate are arranged in parallel, and the semicircular plates are positioned on two sides.

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