Self-resetting friction-metal staged energy consumption damper

Abstract

The self-resetting friction-metal staged energy dissipation damper comprises an outer pipe, the inner portion of the outer pipe is sequentially divided into a first cavity, a second cavity and a third cavity through a first partition plate and a second partition plate, a first energy dissipation assembly is arranged in the first cavity, a resetting device is arranged in the second cavity, and a second energy dissipation assembly is arranged in the third cavity. A second energy dissipation assembly is arranged in the third cavity. The damper can achieve segmented energy dissipation.

Description

Technical Field

[0001] The present invention belongs to the field of seismic resistance of structural engineering, and relates to a self-centering friction-metal staged energy dissipation damper. Background Art

[0002] China is located between the Eurasian seismic belt and the Circum-Pacific seismic belt, with frequent earthquakes. The damage and collapse of building structures caused by earthquakes pose a great threat to human life and huge property losses. How to reduce structural damage during earthquakes has become a research hotspot. Dampers can absorb seismic energy during earthquakes and reduce structural damage during earthquakes.

[0003] Publication number CN118581987A discloses a self - resetting double - chamber hierarchical friction damper, including a frame. A partition is arranged inside the frame, and the partition divides the interior of the frame into a first chamber and a second chamber. A first friction plate is arranged inside the first chamber, and a second friction plate and a third friction plate are arranged inside the second chamber. One end of the second friction plate passes through the partition and is slidably connected to the first friction plate through two stoppers. A disc spring is arranged between the two stoppers. The second friction plate is provided with a trapezoidal protrusion in the middle of the second chamber, and the middle of the third friction plate is provided with a trapezoidal groove longer than the protrusion. Both ends of the third friction plate respectively abut against the partition and the side wall of the frame close to the second chamber, and a disc spring is arranged between the third friction plate and the frame. When the building undergoes a large displacement, during the sliding process of the second friction plate, the waist of the protrusion contacts the waist of the groove, and vertical energy dissipation is started. The upper protrusion squeezes the upper third friction plate, causing the upper third friction plate to move vertically upward, and the lower protrusion squeezes the lower third friction plate, causing the lower third friction plate to move vertically downward. During the vertical movement process, both ends of the third friction plate respectively rub against the partition and the side wall of the frame, playing an energy - dissipating role. The damper provided by this invention can achieve a reset effect during left - right movement through the same disc spring, without separately designing components for achieving the reset effect for vibrations in different directions, reducing the design length of the damper, saving building space, saving the use of friction materials and reset materials, and achieving friction energy dissipation and two - way reset effects with as little material as possible on the premise of reducing the number of openings in the friction materials, so as to improve the self - stiffness of each component of the damper and extend the service life of the damper. The damper provided by this invention can provide sufficient energy - dissipating capacity through the combined action of horizontal friction energy dissipation and vertical friction energy dissipation, enabling the damper to generate sufficient energy - dissipating capacity on the basis of being able to produce sufficient deformation when dealing with large displacements, that is, the damper provided by this invention will not be prematurely damaged due to the building displacement being greater than the maximum deformation that the damper can generate when dealing with large displacements, nor will it cause significant damage to the building due to insufficient energy - dissipating capacity, enabling the building to better cope with low - frequency vibration effects. When the damper provided by this invention transitions from the large - displacement state to the initial state, the horizontal - direction friction energy - dissipation system can achieve a slow - reset effect to prevent unnecessary additional damage to the building structure caused by excessive swaying speed, while the vertical friction participates in energy dissipation but does not hinder the reset process, enabling the damper to more easily achieve complete reset even when the energy dissipation is large, thus promoting the complete reset of the building. This damper can more comprehensively and flexibly cope with large and small vibration effects, specifically perform hierarchical friction energy dissipation on large and small displacements and always play a self - reset function. Under small displacements, only horizontal energy dissipation is started to achieve the self - reset function and friction energy dissipation under small displacements; under large displacements, horizontal energy dissipation and vertical energy dissipation act simultaneously to achieve the two - way friction energy dissipation and automatic reset function of the damper under large displacements.

[0004] However, there is no linkage between energy consumption and reset in the disclosed patent. Compared with traditional dampers that mainly rely on plastic deformation or friction for energy dissipation, permanent deformation may occur after energy dissipation and they do not have the ability of self-reset. The self-reset damper not only has the ability to consume seismic energy, but also can significantly reduce the residual displacement of the structure after an earthquake according to its self-reset characteristics. Therefore, the self-reset damper has attracted the close attention of researchers. However, most traditional self-reset dampers are of a single energy dissipation form. Currently, most self-reset dampers dissipate energy under moderate or large earthquakes, and their energy dissipation effect under small earthquakes is not good, and they cannot achieve the effect of staged energy dissipation. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a self-resetting friction-metal staged energy dissipation damper that can achieve staged energy dissipation.

[0006] To achieve the above purpose, the present invention discloses a self-resetting friction-metal staged energy dissipation damper, including an outer tube. Wherein, the outer tube is sequentially divided into a first chamber, a second chamber and a third chamber by a first partition plate and a second partition plate. A first energy dissipation component is arranged in the first chamber, a reset device is arranged in the second chamber, and a second energy dissipation component is arranged in the third chamber.

[0007] The further improvement of the self-resetting friction-metal staged energy dissipation damper of the present invention lies in:

[0008] Furthermore, it also includes an inner rod, an end plate and a loading plate. A first through hole is arranged on the first partition plate, and a second through hole is arranged on the second partition plate. A first inner filling plate is arranged in the first through hole, and a second inner filling plate is arranged in the second through hole. One end of the inner rod is located in the third chamber and is connected to the end plate, and the other end of the inner rod passes through the second inner filling plate, the second chamber, the third inner filling plate and the first chamber and extends out of the outer tube and is connected to the loading plate.

[0009] Furthermore, the second energy dissipation component includes a plurality of fixing plates. Wherein, a movable groove plate is arranged between adjacent fixing plates. Wherein, a friction plate is arranged between adjacent fixing plates and the movable groove plate. Each fixing plate is fixed on the inner wall of the outer tube, and each movable groove plate is fixed on the end plate. Wherein, a fixing block is arranged between adjacent movable groove plates, and the fixing block is fixed on the end plate.

[0010] Furthermore, a first high-strength bolt passes through each fixing plate, each movable groove plate and each friction plate.

[0011] Furthermore, the fixing plate and the movable groove plate are connected by a second high-strength bolt.

[0012] Further, the reset device includes a first disc spring baffle, a second disc spring baffle and a combined disc spring. The combined disc spring is located between the first disc spring baffle and the second disc spring baffle. The first disc spring baffle contacts the first partition board, and the second disc spring baffle contacts the second partition board.

[0013] Further, the first energy dissipation component includes an inner rod. Upper connecting plates and lower connecting plates are arranged between the upper and lower sides of the inner rod and the inner wall of the outer tube. A plurality of X-shaped metal energy dissipation plates are arranged between the upper connecting plate and the lower connecting plate.

[0014] Further, the upper connecting plate and the outer tube are connected by a third high-strength bolt.

[0015] Further, the lower connecting plate and the inner rod are connected by a fourth high-strength bolt.

[0016] Further, the end of the inner rod is connected to the first inner filling plate.

[0017] The present invention has the following beneficial effects:

[0018] When the self-resetting friction-metal staged energy dissipation damper of the present invention is specifically operated, the combined disc spring can provide a reset force, significantly reducing the residual displacement of the building structure after an earthquake, reducing the structural repair cost and time. Moreover, the present invention can fully dissipate energy under small, medium or large earthquakes. During small earthquakes, the friction energy dissipation device of the damper first slides to dissipate energy through friction. At this time, the X-shaped metal energy dissipation plate is in the elastic deformation stage. When the X-shaped metal energy dissipation plate reaches the yield displacement, the X-shaped metal energy dissipation plate also dissipates energy through metal yield, that is, during medium or large earthquakes, the friction energy dissipation device and the X-shaped metal energy dissipation plate dissipate energy together, thus achieving the effect of staged energy dissipation. The present invention can dissipate seismic energy under different seismic intensities, reduce the damage of the building structure under earthquakes, and reduce the residual displacement of the structure. Description of the Drawings

[0019] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 is the structural diagram of the present invention;

[0021] Figure 2 is the exploded view of the present invention.

[0022] Among them, 1 is the outer tube, 2 is the inner rod, 3 is the X-shaped metal energy dissipation plate, 4-1 is the first disc spring baffle, 4-2 is the second disc spring baffle, 5 is the combined disc spring, 6 is the movable groove plate, 7 is the friction plate, 8 is the loading plate, 9-1 is the third high-strength bolt, 9-2 is the first high-strength bolt, 9-3 is the second high-strength bolt, and 9-4 is the fourth high-strength bolt. Specific implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. 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 invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be understood that the terms "include" and "comprise" indicate the presence of the described features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0025] It should also be understood that the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" are intended to include the plural forms.

[0026] It should be further understood that the term " / and" used in the specification of the present invention and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present invention generally represents an "or" relationship between the front and rear related objects.

[0027] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present invention to describe preset ranges, etc., these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from each other. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0028] Depending on the context, as used herein, the term "if" can be interpreted as "when" or "while" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if determined" or "if detecting (stated condition or event)" can be interpreted as "when determined" or "in response to determining" or "when detecting (stated condition or event)" or "in response to detecting (stated condition or event)".

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Generally, the components described and shown in the accompanying drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Schematic diagrams of various structures according to the disclosed embodiments of the present invention are shown in the drawings. These figures are not drawn to scale, where for the purpose of clear illustration, some details are enlarged and some details may be omitted. The shapes of various regions and layers shown in the figures and their relative sizes and positional relationships are merely exemplary, and may actually deviate due to manufacturing tolerances or technical limitations, and those skilled in the art can design regions / layers with different shapes, sizes and relative positions according to actual needs.

[0031] As is well known, a damper is a device that dissipates vibration or shock energy by providing resistance to motion, and is widely used in the fields of machinery, construction, aerospace, automotive, electronics, etc. for controlling vibration, reducing noise, and improving system stability and safety. Its core function is to convert mechanical energy into heat energy or other forms of energy, thereby weakening or eliminating harmful vibrations.

[0032] The working principle of the damper is based on the energy dissipation mechanism, which is mainly achieved through the following several ways: Viscous damping: Utilize the viscosity of the fluid (such as oil) to generate resistance during motion and consume energy. Frictional damping: Dissipate energy through the friction between solids. Electromagnetic damping: Utilize the principle of electromagnetic induction to generate eddy currents when a conductor moves in a magnetic field, thereby generating resistance. Structural damping: Absorb energy through the damping characteristics of the material itself (such as rubber, composite materials).

[0033] Types of Dampers: According to the working principle and application scenarios, dampers can be classified into the following categories: Hydraulic dampers: Utilize the viscous resistance of fluids and are applicable to large machinery and building structures. Rotary dampers: Used for vibration reduction of rotating components, such as furniture hinges and car seat adjustments. Linear dampers: Used for vibration reduction of linear motion systems, such as car suspension systems. Tuned mass dampers (TMD): Cancel the vibration of the main structure through the vibration of an additional mass block and are commonly used in high-rise buildings and bridges. Magnetorheological dampers: Utilize the characteristics of magnetorheological fluids and adjust the damping force through a magnetic field, suitable for intelligent control systems.

[0034] Application Areas of Dampers: Construction Engineering: Used for vibration reduction of structures such as high-rise buildings, bridges, and dams to improve seismic performance. For example, the tuned mass damper of the Taipei 101 building is one of the largest dampers in the world and is used to resist vibrations caused by typhoons and earthquakes. Automotive Industry: Used in parts such as suspension systems and engine mounts to improve driving comfort and handling stability. Aerospace: Used in parts such as aircraft landing gears and satellite antennas to reduce the impact of vibrations on equipment. Mechanical Equipment: Used in equipment such as machine tools and die-casting machines to reduce vibrations and noise and improve processing accuracy. Electronic Products: Used in precision instruments such as hard disk drives and optical devices to prevent performance degradation caused by vibrations.

[0035] Advantages of Dampers: Improve System Stability: Effectively reduce vibrations and impacts and extend the service life of equipment. Enhance Safety: Protect structures and equipment under extreme working conditions (such as earthquakes and strong winds). Improve Comfort: Reduce vibrations and noise in transportation and buildings to enhance the user experience. Energy Conservation and Environmental Protection: Improve system efficiency by reducing energy losses caused by vibrations.

[0036] Development Trends of Dampers: With the development of materials science and intelligent control technology, dampers are evolving in the following directions: Intelligence: Combine sensors and control systems to achieve real-time adjustment of damping force. Lightweight: Use new materials (such as carbon fiber composite materials) to reduce weight and improve performance. Multifunctionalization: Integrate multiple functions such as vibration reduction, heat insulation, and noise reduction to meet complex application requirements.

[0037] As an important vibration control device, dampers play an irreplaceable role in modern engineering. With the continuous progress of technology, the performance and application scope of dampers will be further expanded, providing strong guarantees for the equipment safety and performance improvement of various industries.

[0038] Example 1

[0039] The self-resetting friction-metal staged energy-dissipating damper of the present invention includes an outer tube 1. Among them, the inside of the outer tube 1 is successively divided into a first chamber, a second chamber, and a third chamber by a first partition and a second partition. A first energy-dissipating component is arranged in the first chamber, a reset device is arranged in the second chamber, and a second energy-dissipating component is arranged in the third chamber.

[0040] Embodiment 2

[0041] Reference Figure 1 And Figure 2 For this invention, the self-resetting friction-metal staged energy-dissipating damper includes an outer tube 1, an inner rod 2, and a loading plate 8. Among them, the inside of the outer tube 1 is successively divided into a first chamber, a second chamber, and a third chamber by a first partition and a second partition. A first through hole is provided on the first partition, and a second through hole is provided on the second partition. A first inner filling plate is arranged in the first through hole, and a second inner filling plate is arranged in the second through hole. One end of the inner rod 2 is located in the third chamber and is connected to an end plate. The other end of the inner rod 2 passes through the second inner filling plate, the second chamber, the third inner filling plate, and the first chamber and extends outside the outer tube 1 and is connected to the loading plate 8. A plurality of fixing plates are arranged in the third chamber. Among them, a movable groove plate 6 is arranged between adjacent fixing plates. Among them, a friction plate 7 is arranged between adjacent fixing plates and the movable groove plate 6. A first high-strength bolt 9-2 passes through each fixing plate, each movable groove plate 6, and each friction plate 7; each fixing plate is fixed on the inner wall of the outer tube 1, and each movable groove plate 6 is fixed on the end plate. Among them, a fixing block is arranged between adjacent movable groove plates 6, and the fixing block is fixed on the end plate. The fixing plate and the movable groove plate 6 are connected by a second high-strength bolt 9-3.

[0042] A first disc spring baffle 4-1, a second disc spring baffle 4-2, and a combined disc spring 5 are arranged in the second chamber. Among them, the combined disc spring 5 is located between the first disc spring baffle 4-1 and the second disc spring baffle 4-2. The first disc spring baffle 4-1 is in contact with the first partition, and the second disc spring baffle 4-2 is in contact with the second partition.

[0043] In the first chamber, an inner rod sleeve is sleeved on the inner rod 2. Upper connecting plates and lower connecting plates are arranged between the upper and lower sides of the inner rod sleeve and the inner wall of the outer tube 1. A plurality of X-shaped metal energy-dissipating plates 3 are arranged between the upper connecting plate and the lower connecting plate. The upper connecting plate and the outer tube 1 are connected by a third high-strength bolt 9-1. The lower connecting plate and the inner rod are connected by a fourth high-strength bolt 9-4. The end of the inner rod sleeve is connected to the first inner filling plate.

[0044] The specific construction process of the present invention:

[0045] At the factory according to Figure 1Install the self - reset friction - metal staged energy - dissipating damper according to the above description, and apply a predetermined prestress to the combined disc spring 5. Then connect the corresponding ear plates to the loading plate 8 and the right end of the outer tube 1. Then transport the self - reset friction - metal staged energy - dissipating damper to the construction site, install ear plates at the beam - column joints of the frame structure, arrange the self - reset friction - metal staged energy - dissipating damper obliquely at the beam - column joints of the frame structure, and connect them through the ear plates.

[0046] In the present invention, the three - chamber structure can adjust the energy - dissipating and reset parameters for different working conditions (such as transient impact, continuous vibration), and is applicable to fields such as building earthquake resistance, mechanical vibration reduction, and vehicle suspension, improving the system versatility and reducing the application costs in multiple scenarios. In addition, the combined design of the double energy - dissipating components and the reset device improves safety and reliability, and can effectively avoid the system collapse caused by the failure of a single component.

[0047] After considering the specification and the disclosure of the invention, those skilled in the art will easily think of other embodiments of the present invention. This application aims to cover any variations, uses, or adaptive changes of the present invention, which follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field not disclosed in the present invention. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present invention are pointed out by the following claims.

[0048] It should be understood that the present invention is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

[0049] The above - mentioned are only the preferred embodiments of the present invention, and do not impose any limitation on the present invention. Any simple modification, change, and equivalent structural change made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A self-resetting friction-metal staged energy dissipation damper, characterized in that, It includes an outer tube (1). Inside the outer tube (1), a first chamber, a second chamber, and a third chamber are sequentially separated by a first partition and a second partition. A first energy-consuming component is arranged in the first chamber, a reset device is arranged in the second chamber, and a second energy-consuming component is arranged in the third chamber.

2. The self-resetting friction-metal staged energy-dissipating damper according to claim 1, wherein It further includes an inner rod (2), an end plate, and a loading plate (8). A first through hole is provided on the first partition, and a second through hole is provided on the second partition. A first inner filling plate is arranged in the first through hole, and a second inner filling plate is arranged in the second through hole. One end of the inner rod (2) is located in the third chamber and is connected to the end plate. The other end of the inner rod (2) passes through the second inner filling plate, the second chamber, the third inner filling plate, and the first chamber and extends outside the outer tube (1) and is connected to the loading plate (8).

3. The self-resetting friction-metal staged energy dissipation damper according to claim 2, characterized in that, The second energy-consuming component includes a plurality of fixing plates. Between adjacent fixing plates, a movable groove plate (6) is arranged. Between adjacent fixing plates and the movable groove plate (6), a friction plate (7) is arranged. Each fixing plate is fixed on the inner wall of the outer tube (1), and each movable groove plate (6) is fixed on the end plate. Between adjacent movable groove plates (6), a fixing block is arranged, and the fixing block is fixed on the end plate.

4. The self-resetting friction-metal staged energy dissipation damper according to claim 3, wherein, A first high-strength bolt (9-2) passes through each fixing plate, each movable groove plate (6), and each friction plate (7).

5. The self-resetting friction-metal staged energy-dissipating damper according to claim 3, wherein The fixing plate and the movable groove plate (6) are connected by a second high-strength bolt (9-3).

6. The self-resetting friction-metal staged energy-dissipating damper according to claim 2, wherein The reset device includes a first disc spring baffle (4-1), a second disc spring baffle (4-2), and a combined disc spring (5). The combined disc spring (5) is located between the first disc spring baffle (4-1) and the second disc spring baffle (4-2). The first disc spring baffle (4-1) is in contact with the first partition, and the second disc spring baffle (4-2) is in contact with the second partition.

7. The self-resetting friction-metal staged energy-dissipating damper according to claim 2, wherein The first energy-consuming component includes an inner rod. Upper connecting plates and lower connecting plates are arranged between the upper and lower sides of the inner rod and the inner wall of the outer tube (1). Between the upper connecting plate and the lower connecting plate, a plurality of X-shaped metal energy-consuming plates (3) are arranged.

8. The self-resetting friction-metal staged energy-dissipating damper according to claim 7, wherein The upper connecting plate and the outer tube (1) are connected by a third high-strength bolt (9-1).

9. The self-resetting friction-metal staged energy dissipation damper according to claim 7, wherein The lower connecting plate and the inner rod are connected by a fourth high-strength bolt (9-4).

10. The self-resetting friction-metal staged energy-dissipating damper according to claim 7, wherein The end of the inner rod is connected to the first inner filling plate.

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