CN220521638U - A metal composite damper - Google Patents

Abstract

The utility model provides a metal composite damper which comprises two constraint plates and a composite viscoelastic layer arranged between the two constraint plates, wherein a plurality of lead cores are arranged between the two constraint plates and the composite viscoelastic layer, and a limiting assembly is arranged between the two constraint plates. Under the condition of shear displacement, the utility model generates shear displacement in two opposite directions by the plastic deformation of the lead core and the shear hysteresis deformation energy consumption of the composite viscoelastic layer, can provide larger initial rigidity and higher damping, has better resilience and moderate damping when stress is terminated, enhances the energy consumption effect of the damper, better ensures the stability of the integral structure provided with the damper, has better fatigue resistance under the action of long-term wind load, can generate shear hysteresis deformation for energy consumption under small displacement, has good energy consumption effect, and can ensure the safety of the main structure.

Description

A metal composite damper

Technical field

The utility model relates to the technical field of dampers, in particular to a metal composite damper.

Background technique

With the frequent occurrence of earthquakes in recent years, energy dissipation and shock absorption technology has attracted more and more attention in the seismic design of civil engineering. Energy dissipation and shock absorption technology aims to reduce the vibration response of the building structure and reduce the damage to the building structure caused by earthquakes by converting or dissipating the energy between the structure and the earthquake. Energy-dissipation and shock-absorbing technology has been widely used, including setting up energy-dissipating and shock-absorbing devices to reduce the seismic response of structures.

Energy dissipation and shock-absorbing devices in the prior art can be basically divided into four categories according to the materials used: metal energy dissipators, friction energy dissipators, viscoelastic energy dissipators and lead viscoelastic energy dissipators; however, due to the As engineering structures become increasingly complex, dampers need to dissipate as much of the energy input into the structure as possible under earthquake action.

Utility model content

The purpose of this utility model is to provide a metal composite damper with excellent overall stability, repeatable working ability, and better energy consumption effect.

According to the purpose of the utility model, the utility model provides a metal composite damper, which includes two restraining plates and a composite viscoelastic layer arranged between the two restraining plates. The two restraining plates and the composite A number of lead cores are arranged between the viscoelastic layers, and a limiting component is arranged between the two constraining plates.

Further, the composite viscoelastic layer includes at least one composite viscoelastic piece, which is composed of rubber and thin steel plates in sequence, and is vulcanized between the composite viscoelastic piece and the two constraining plates. connect.

Further, the limiting assembly is a limiting slide rail, and two constraining plates are arranged staggered up and down. The upper and lower ends of the two constraining plates are connected to the corresponding limiting slide rails through bolts respectively.

Further, the limiting component is a friction component. The friction component includes a friction plate and a friction plate. The friction plate is disposed outside the restraining plate. The friction plate is disposed between the friction plate and the restraining plate. between the plates and fixed by bolts and disc springs.

Further, the restraining plate is provided with a plurality of lead core grooves, and the lead cores penetrate the composite viscoelastic member and are fixed in the lead core grooves on the restraining plate.

Further, a shear pin is provided between the constraining plate and the composite viscoelastic component, and a sliding panel is provided between the limiting slide rail and the constraining plate.

Furthermore, the composite viscoelastic component is arranged in a continuous or multi-section form.

Further, the lead cores are arranged in a single row or in multiple rows, and the cross section of the lead cores is square, rectangular or circular.

Further, one of the restraining plates is provided with a sliding groove, and the other restraining plate is provided with a plurality of through holes, and the bolts penetrate the sliding groove and the through holes to connect the two restraining plates together.

Furthermore, the number of the sliding grooves is multiple, and the plurality of sliding grooves are located on the same straight line or arranged parallel to each other.

When shear displacement occurs, the technical solution of the utility model consumes energy through the plastic deformation of the lead core and the shear hysteretic deformation of the composite viscoelastic layer. It is simple and reasonable. In the direction of shear displacement, the two restraining plates move toward each other. Shear displacement occurs in both directions, which can provide larger initial stiffness and higher damping. It has better recovery and moderate damping when the force is terminated, which enhances the energy dissipation effect of the damper itself, thereby better It ensures the stability of the overall structure where the damper is installed, making it safer during use. The damper has good fatigue resistance under long-term wind load and can be used even under very small conditions. Under the displacement, shear hysteretic deformation is generated to dissipate energy, and the energy dissipation effect is very good, which can ensure the safety of the main structure where the damper is installed.

Description of drawings

In order to more clearly explain the specific embodiments of the present invention or the technical solutions in the prior art, the drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description The accompanying drawings illustrate some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model;

Figure 2 is a schematic diagram of the back structure of Embodiment 1 of the present utility model;

Figure 3 is a side view of Embodiment 1 of the present utility model;

Figure 4 is a cross-sectional view of Embodiment 1 of the present utility model;

Figure 5 is a schematic structural diagram of Embodiment 2 of the present utility model;

Figure 6 is a schematic diagram of the back structure of Embodiment 2 of the present utility model;

Figure 7 is a side view of Embodiment 2 of the present utility model;

Figure 8 is a cross-sectional view of Embodiment 2 of the present utility model.

In the picture: 1. Composite viscoelastic parts; 2. Lead core; 3. First restraint steel plate; 4. Second restraint steel plate; 5. Limit slide rail; 6. Lead core groove; 7. Shear pin; 8. Sliding panel; 9. Lead cover; 10. Friction plate; 11. Friction plate; 12. Disc spring; 13. Sliding groove.

Detailed ways

The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", The directions indicated by "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operation, therefore it cannot be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "plurality" means two or more, unless otherwise clearly and specifically limited. In addition, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can It is directly connected, or it can be indirectly connected through an intermediary, or it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

As shown in Figure 1-Figure 4,

A metal composite damper includes at least one composite viscoelastic component 1, a plurality of lead cores 2, a first constraining steel plate 3, a second constraining steel plate 4 and two limiting slide rails 5. The composite viscoelastic component 1 is arranged on the first Between the first constraining steel plate 3 and the second constraining steel plate 4, the composite viscoelastic component 1 is connected to the first constraining steel plate 3 and the second constraining steel plate 4 through vulcanization; the first constraining steel plate 3 and the second constraining steel plate 4 are provided with There are several lead core grooves 6, and the lead core 2 penetrates the composite viscoelastic component 1 and is fixed in the lead core grooves 6 on the first constraining steel plate 3 and the second constraining steel plate 4. The first restraining steel plate 3 and the second restraining steel plate 4 are arranged staggered up and down. The upper and lower ends of the first restraining steel plate 3 and the second restraining steel plate 4 are respectively connected to the corresponding limiting slide rail 5 through bolts.

The limit slide rail 5 has an L-shaped or U-shaped structure. One end of the limit slide rail 5 clamps the first constraint steel plate 3 or the second constraint steel plate 4. The other end of the limit slide rail 5 is connected to the second constraint steel plate through bolts. 4 or the first constraining steel plate 3 is connected and preloaded, and the first constraining steel plate 3 and the second constraining steel plate 4 are connected together through the limiting slide rail 5 .

In this embodiment, the number of the composite viscoelastic member 1 is preferably one piece. The composite viscoelastic member 1 is arranged between the first constraining steel plate 3 and the second constraining steel plate 4 to form a single shear type lead viscoelastic damper. The lead core 2 It penetrates the composite viscoelastic member 1 and is fixed in the lead core groove 6 of the first constraining steel plate 3 and the second constraining steel plate 4. The upper and lower ends of the first constraining steel plate 3 and the second constraining steel plate 4 are respectively connected with corresponding limits through bolts. The slide rails 5 are connected into one body.

In this embodiment, a shear pin 7 is also provided between the first constraining steel plate 3 , the composite viscoelastic component 1 and the second constraining steel plate 4 , and between the limiting slide rail 5 and the first constraining steel plate 3 or the second constraining steel plate 4 The room is also equipped with sliding panels 8.

In this embodiment, the composite viscoelastic component 1 is composed of several layers of materials with damping properties such as rubber and several layers of thin steel plates that are crisscrossed and combined in sequence. The composite viscoelastic component 1 can be arranged in a continuous or multi-section form. The composite viscoelastic component 1 is connected to the first constraining steel plate 3 and the second constraining steel plate 4 through vulcanization, and the first constraining steel plate 3 and the second constraining steel plate 4 are respectively connected to the limiting slide rail 5 through bolt connection. The core 2 is arranged through the composite viscoelastic member 1 and fixed to each other with the lead core grooves 6 of the first constraining steel plate 3 and the second constraining steel plate 4 and sealed with a lead core cover plate 9 .

In this embodiment, the total number of lead cores 2 on the first restraining steel plate 3 and the second restraining steel plate 4 is eight. The lead cores 2 can be arranged in a single row or in a multi-row arrangement. The first restraining steel plate 3 The length and width of the second restraining steel plate 4 can be changed according to actual needs to change the number and arrangement of the lead core 2 and the limit slide rail 5; production and processing are more convenient, so the structural form of the damper is more flexible. In actual design, it is enough to ensure that the damper has a good energy dissipation effect.

In this embodiment, the limit slide rail 5 is connected to the first constraint steel plate 3 and the second constraint steel plate 4 by bolting, and the limit slide rail 5 is provided to constrain the deformation modes of the first constraint steel plate 3 and the second constraint steel plate 4 . The end face of the limit slide rail 5 is welded and connected to the embedded parts of the wall structure.

In this embodiment, the number of lead cores 2 arranged in the shear displacement direction of the first constraining steel plate 3 and the second constraining steel plate 4 can be flexibly adjusted according to structural design needs. The lengths of the first constraining steel plate 3 and the second constraining steel plate 4 can be adjusted in the non-shear displacement direction according to the number of rows of the lead cores 2, that is, the lead cores 2 can be arranged in a single row. or multi-row arrangement. The lead core 2 has various shapes, including square, rectangular and circular shapes. The first constraining steel plate 3 and the second constraining steel plate 4 can adopt different design structures in terms of structural length design in the non-shear displacement direction, and there are multiple connection solutions, including welding solutions and bolt connection solutions.

The metal composite damper in this embodiment is a displacement-type metal composite damper that can be used in structures such as frames and shear walls. When the metal composite damper of the present utility model is used, when shear displacement occurs, the metal composite damper passes through the lead The energy consumption of the plastic deformation of the core 2 and the shear hysteretic deformation of the composite viscoelastic component 1 is simple and reasonable. In the direction of shear displacement, the first constraint steel plate 3 and the second constraint steel plate 4 shear in two opposite directions. Displacement can provide large initial stiffness and high damping, and has good recovery and moderate damping when the force is terminated, which enhances the energy dissipation effect of the damper itself, thereby better ensuring that the damper is installed. The stability of the overall structure makes it safer during use. The damper has good fatigue resistance under long-term wind load and can produce shear under very small displacements. Hysteretic deformation consumes energy, and the energy dissipation effect is very good, which can ensure the safety of the main structure where the damper is installed.

Through the use of the limit slide rail 5, this embodiment reduces the number of sheared steel plates, achieves steel saving, reduces weight, and is conducive to the production of dampers to a certain extent; through the use of the limit slide rail 5, the limit is effectively limited The out-of-plane deformation of the first constraint steel plate 3 and the second constraint steel plate 4 is eliminated, and the constraint damper undergoes shear deformation, achieving more accurate energy consumption design and greatly improving the stability of the component.

In this embodiment, the limit slide rail 5 is connected to the first constraining steel plate 3 and the second constraining steel plate 4 through bolt connection, which simplifies the installation of damper components and facilitates rapid replacement of components, which is beneficial to construction and installation in actual projects.

In this embodiment, the first constraining steel plate 3 and the second constraining steel plate 4 can be welded or bolted to the structure through different structural designs, simplifying the installation steps of the damper and the structure, and achieving high construction efficiency. The lead cores 2 can be arranged in single row or multiple rows, in different quantities, in square, rectangular, and circular arrangements, which can effectively improve the energy dissipation capacity of the damper. The lead cores 2 have dynamic recrystallization characteristics. In the composite viscoelastic part 1 Under the restraint effect, the service life and economic benefits of the damper can be effectively improved.

The composite viscoelastic component 1 can be arranged in a continuous or segmented arrangement, and can maintain elastic deformation under a certain load, which can effectively improve the performance stability of the damper. The plastic deformation of the lead core 2 and the shear hysteretic deformation of the composite viscoelastic part 1 dissipate the energy of the external load, and have excellent energy dissipation capacity, and enter the yield stage at a very small displacement; the composite viscoelastic part 1 has better The lead core 2 has dynamic recrystallization characteristics, can effectively dissipate energy and absorb shock, and has the ability to work repeatedly.

Example 2

As shown in Figure 5-Figure 8,

A metal composite damper, including at least two composite viscoelastic parts 1, multiple rows of lead cores 2, a first constraint steel plate 3, a second constraint steel plate 4 and a friction component. The two composite viscoelastic parts 1 are arranged on the first constraint Between the steel plate 3 and the second restraining steel plate 4, the first restraining steel plate 3 and the second restraining steel plate 4 are connected together through friction components.

The friction assembly includes a friction plate 10, a friction plate 11, a disc spring 12, bolts and nuts; the friction plate 11 is arranged outside the first constraining steel plate 3, and the friction plate 10 is arranged between the friction plate 11 and the first constraining steel plate 3. A sliding groove 13 is provided on one constraining steel plate 3, and a number of through holes are provided on the second constraining steel plate 4. The first constraining steel plate 3 and the second constraining steel plate 4 are misaligned so as not to affect each other under shear deformation. A number of bolts penetrate the friction plate 11, the friction plate 10, the first constraining steel plate 3 and the second constraining steel plate 4 respectively and are fixed by nuts. There are between the bolts and the first constraining steel plate 3 and between the nuts and the second constraining steel plate 4 There are 12 disc springs.

The first restraining steel plate 3 can be provided with multiple sliding grooves 13 , which can be multiple sliding grooves 13 on the same straight line, or multiple sliding grooves 13 parallel to each other. The second restraining steel plate 4 can be provided with multiple sets of bolts, that is, the same sliding groove 13 There can be multiple sets of bolt holes, which can increase the friction force and thereby improve the friction work under the same sliding displacement.

The two composite viscoelastic parts 1 are connected to each other through vulcanization at the upper and lower positions of the sliding groove 13 with the first constraining steel plate 3 and the second constraining steel plate 4; the lead core 2 is arranged through the composite viscoelastic part 1 and connected with the first constraining steel plate 3 The lead groove 6 on the second restraining steel plate 4 is fixed to each other and sealed with a lead cover 9 .

The friction component is connected by bolts and applies pre-tightening force. It not only provides the damper with pressure in the direction between the two restraining steel plates and restrains the shear deformation of the two restraining steel plates, but also provides the normal direction of the pre-tightening force for the damper. Directional friction and energy dissipation through sliding displacement. Under shear displacement, the damper simultaneously uses the plastic deformation of the lead core 2, the shear hysteretic deformation of the composite viscoelastic component 1, and the friction force provided by the friction component to jointly dissipate energy through sliding displacement. It is composed of a variety of effective energy dissipation mechanisms. One of the energy dissipation and shock absorption devices composed of.

Since existing lead viscoelastic dampers are usually equipped with three or more restraining steel plates or shear steel plates, this embodiment is beneficial to reducing the dead weight and facilitating assembly; in order to solve the problem of out-of-plane stiffness of the damper that may be caused by only two restraining plates To solve the problem of insufficient friction, a friction component is set up to improve the stiffness of the damper, so that the damper has the characteristics of friction as power and energy consumption under sliding displacement, and the plastic deformation of the lead core 2 and the composite viscoelastic component 1 are used under shear displacement. Hysteretic deformation effectively dissipates energy and combines the energy dissipation mechanisms of multiple materials to improve the damping force and energy dissipation capacity of the damper.

In this embodiment, the composite viscoelastic component 1 is composed of several layers of materials with damping properties such as rubber and several layers of thin steel plates that are cross-combinated in sequence. The composite viscoelastic component 1 can be arranged in a continuous or multi-section form. Specifically, the composite viscoelastic part 1 can be natural rubber or a viscoelastic material with high damping, and the friction material is a mixture of polytetrafluoroethylene, brass, brake pads, magnesium-aluminum alloy, inorganic asbestos, lead and polytetrafluoroethylene. one or several types.

In this embodiment, the length of the constrained steel plate in the direction of shear displacement can be adjusted according to design needs. The number of different lead cores 2 can be adjusted. The lead core 2 can be designed in a single row or multi-row arrangement according to actual design requirements. According to the structural design length of the restrained steel plate in the non-shear deformation direction, various design methods can be adopted and different connection schemes with the structure can be adopted. The lead core 2 has a variety of layout shapes, that is, the lead core 2 can be arranged in different shapes such as square, rectangular, and circular.

The shape of the friction plate 10 and the shape of the friction plate 11 in the friction assembly have various shapes, including square, rectangular, circular and other shapes.

This embodiment has a simple structure and a clear energy dissipation mechanism. On the premise that the bolt provides pre-tightening force to ensure that the damper avoids out-of-plane deformation, it also provides friction in the normal direction of the bolt for power generation and energy dissipation, and also utilizes a lead core. 2's shear plastic deformation and the shear hysteretic deformation of the composite elastic part to dissipate energy, integrating multiple energy dissipation mechanisms into one and the working mechanism is simple and effective.

This embodiment can provide a large damping force and excellent energy dissipation capability. Based on the simultaneous coordinated energy dissipation of multiple materials, the lead core 2 and the composite viscoelastic component 1 can provide a large shearing force and friction for the damper. The component can provide greater friction for the damper, greater stiffness and better damping for the structure, and can effectively improve the stability of the structure. In the above embodiment, the lead core can also be a metal energy-consuming rod, and the metal energy-consuming rod can achieve the same function as the lead core.

The constrained steel plate of this embodiment can be welded or bolted to the structure through different structural designs, simplifying the installation steps of the damper and the structure, and has high construction efficiency. The lead core 2 has dynamic recrystallization characteristics, and the composite viscoelastic component 1 can maintain elastic deformation under a certain load. Based on the simple friction assembly, the friction plate 10 is easy to replace. This device has excellent service life and economic benefits, and has repeatable work. ability.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that : It is still possible to modify the technical solutions recorded in the foregoing embodiments, or to equivalently replace some or all of the technical features; and these modifications or substitutions do not deviate from the essence of the corresponding technical solutions from the embodiments of the present invention. Scope of technical solutions.

Claims (10)

1. A metal composite damper, characterized in that it includes two constraining plates and a composite viscoelastic layer disposed between the two constraining plates, between the two constraining plates and the composite viscoelastic layer A number of lead cores are provided, and a limiting component is provided between the two restraining plates. 2. The metal composite damper according to claim 1, characterized in that the composite viscoelastic layer includes at least one composite viscoelastic component, and the composite viscoelastic component is composed of rubber and thin steel plates that are sequentially crossed and combined. The composite viscoelastic component is vulcanized and connected to the two constraining plates. 3. The metal composite damper according to claim 2, characterized in that the limiting assembly is a limiting slide rail, two restraining plates are staggered up and down, and the upper and lower ends of the two restraining plates are respectively Connect with the corresponding limiting slide rail through bolts. 4. The metal composite damper according to claim 2, wherein the limiting component is a friction component, the friction component includes a friction plate and a friction plate, and the friction plate is arranged outside the restraining plate. , the friction plate is arranged between the friction plate and the restraining plate and is fixed by bolts and disc springs. 5. The metal composite damper according to claim 3 or 4, wherein the restraining plate is provided with a plurality of lead core grooves, and the lead core penetrates the composite viscoelastic component and is fixed in the lead core groove. middle. 6. The metal composite damper according to claim 3, wherein a shear pin is provided between the restraining plate and the composite viscoelastic component, and a shear pin is provided between the limiting slide rail and the restraining plate. Features sliding panel. 7. The metal composite damper according to claim 5, wherein the composite viscoelastic member is arranged in a continuous or multi-section form. 8. The metal composite damper according to claim 5, wherein the lead cores are arranged in a single row or in multiple rows, and the cross section of the lead cores is square, rectangular or circular. 9. The metal composite damper according to claim 4, wherein one of the restraining plates is provided with a sliding groove, the other restraining plate is provided with a plurality of through holes, and the bolts penetrate the sliding groove and the The through hole connects the two constraining plates together. 10. The metal composite damper according to claim 9, characterized in that the number of the sliding grooves is multiple, and the plurality of sliding grooves are located on the same straight line or arranged parallel to each other.