Occlusion and friction composite type particle filling energy dissipation damper

Abstract

The invention relates to a meshing and friction composite type particle filling energy dissipation damper, and belongs to the technical field of building structure damping, multiple layers of friction plates are stacked, closed spaces filled with filling particles with different hardness are arranged among the friction plates, and when a building structure deforms to cause relative displacement among the multiple layers of friction plates, the friction plates are arranged in the closed spaces, so that the friction plates can be blocked. The inner walls of the closed spaces are meshed and rubbed with the filling particles, displacement among the multiple layers of friction plates is hindered, and therefore the kinetic energy of the structure is dissipated through damage to the inner walls of the densely-distributed closed spaces, mutual friction among the filling particles and friction fit among the friction plates, the energy dissipation capacity is improved, the energy dissipation path is wider, and the energy dissipation efficiency is improved. And the energy consumption performance is more stable.

Description

Technical Field

[0001] The invention relates to an engagement and friction composite particle-filled energy-dissipating damper, belonging to the technical field of building structure shock absorption. Background Art

[0002] In the field of earthquake resistance of building structures, vibration energy dissipation technology is a key means to improve the seismic performance of structures and reduce earthquake damage. Traditional seismic dampers (such as metal yield type, viscous fluid type and friction type dampers) often face limitations that do not match the usage scenarios in building applications. For example, although metal yield type dampers can dissipate energy through plastic deformation, the residual deformation will make it difficult for the building structure to be reset after an earthquake, affecting the recoverability of the building function; viscous fluid dampers have extremely high requirements for installation accuracy and sealing, and are difficult to adapt to construction errors of building structures and temperature deformation during long-term use; although pure friction type dampers have stable hysteresis characteristics, the friction interface is prone to wear after multiple earthquake reciprocating actions, resulting in preload attenuation and a significant decrease in energy dissipation capacity. In addition, existing dampers are mostly designed for a single earthquake frequency band, and it is difficult to cope with the wide-band, multi-peak energy input characteristics of actual seismic motions, resulting in insufficient adaptability under the action of complex seismic waves.

[0003] However, existing particle dampers for buildings mostly adopt a fixed cavity design, which limits the freedom of particle movement and lacks an active coupling mechanism with the deformation of the main structure. As a result, the synergistic effect of multi-hardness particles is difficult to exert, and they are unable to adapt to the multi-directional interlayer displacement of building structures during earthquakes, which restricts the synergistic improvement of particle bite effect and friction energy consumption. Summary of the Invention

[0004] The object of the present invention is to provide a bite and friction composite particle-filled energy dissipation damper to solve the above problems.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a meshing and friction composite particle-filled energy-dissipating damper, the meshing and friction composite particle-filled energy-dissipating damper comprising:

[0006] The damper body includes at least three layers of stacked friction plates and fasteners connected between the at least three layers of friction plates, wherein a plurality of enclosed spaces are densely distributed between two adjacent friction plates, and waist-shaped holes are arranged on the friction plates, and the fasteners are inserted into the waist-shaped holes;

[0007] A filler is arranged in the confined space, and the filler includes at least two filling particles with different hardnesses. The filling particles are clamped and fixed in the confined space under the action of the fastener.

[0008] Furthermore, the enclosed space is formed by connecting grooves respectively provided on two adjacent friction plates, and the cross section of the groove tends to shrink inward from the surface of the friction plate.

[0009] Furthermore, the filling particles include quartz sand and metal particles, and the metal particles are one or more combinations of zinc, tin, lead, and aluminum.

[0010] Furthermore, the maximum particle size of the filling particles and the maximum depth of the groove should satisfy the following relationship:

[0011] t max ≤d max ≤1.5 tmax ;

[0012] 0.5 tmax ≤D max ≤0.7t max ;

[0013] In the above formula, d max is the maximum particle size of soft metal, D max is the maximum particle size of quartz sand, t max is the maximum depth of the groove.

[0014] Furthermore, the grooves are arranged extending along the width direction of the friction plate, the depth of the grooves increases first and then decreases along the extending direction, and the enclosed space formed by the two grooves connecting together is elliptical.

[0015] Furthermore, a spacing layer is formed between two adjacent grooves, and the width of the spacing layer increases gradually from the surface of the friction plate toward the inside.

[0016] Furthermore, two groups of waist-shaped holes are arranged along the length direction of the friction plate, and the two groups of waist-shaped holes are symmetrically arranged on both sides of the enclosed space. The fasteners are bolts, and two groups of bolts are arranged at intervals in each group of waist-shaped holes.

[0017] Furthermore, a connection portion connected to a building component is provided at one end of the friction plate, and the connection portion does not overlap with projections of the other ends of the friction plates in the stacking direction.

[0018] Furthermore, the friction plates are provided in three groups, which are, from top to bottom, an upper friction cover plate, a main friction plate and a lower friction cover plate. The connecting portion of the upper friction cover plate and the connecting portion of the lower friction cover plate are clamped and fixed on both sides of one of the building components, and the connecting portion of the main friction plate extends into and is fixed to the other building component.

[0019] The beneficial effect of the present invention is that: the present application stacks multiple layers of friction plates and arranges a closed space filled with filling particles of different hardness between the friction plates. When the building structure deforms and causes relative displacement between the multiple layers of friction plates, the inner wall of the closed space and the filling particles bite and rub against each other, hindering the displacement between the multiple layers of friction plates. In this way, the structural motion energy is dissipated by utilizing the damage to the inner wall of the densely distributed closed space, the mutual friction between the filling particles, and the friction cooperation between the friction plates, thereby improving the energy consumption capacity, making the energy consumption path wider, and the energy consumption performance more stable.

[0020] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of an interlocking and friction composite particle-filled energy dissipation damper according to an embodiment of the present application;

[0022] Figure 2 for Figure 1 A cross-sectional view of the middle damper in the longitudinal direction;

[0023] Figure 3 for Figure 1 a cross-sectional view of the middle damper in the width direction;

[0024] Figure 4 for Figure 1 Exploded structure diagram of the middle damper. DETAILED DESCRIPTION

[0025] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] Please refer to Figures 1 to 4 The interlocking and friction composite particle-filled energy dissipation damper shown in one embodiment of the present application includes a damper body and a filler. When the building component 30 drives the multi-layer friction plates 10 to move relative to each other and cause friction, the enclosed space 12 between the sealing plates deforms, causing the filling particles in the enclosed space 12 to interlock and rub against the inner wall of the enclosed space 12. At the same time, different filling particles will also rub and interlock with each other, thereby dissipating the structural motion energy.

[0029] The damper body includes at least three stacked friction plates 10 and fasteners 20 connected between the at least three layers of friction plates 10. There are several enclosed spaces 12 densely distributed between two adjacent friction plates 10. The friction plates 10 are provided with waist-shaped holes 11, and the fasteners 20 are passed through the waist-shaped holes 11.

[0030] The filler is set in the confined space 12. The filler includes at least two filling particles of different hardness. The filling particles are clamped and fixed in the confined space 12 under the action of the fastener 20. The confined space is filled with filling particles, and the friction plate 10 is locked by the fastener 20, so that the filling particles are squeezed so that they are tightly attached to the inner wall of the confined space 12, and the filling particles are tightly squeezed together.

[0031] In one embodiment, the enclosed space 12 is formed by the butting of grooves 13 provided on two adjacent friction plates 10. The cross-section of the grooves 13 decreases inward from the surface of the friction plates 10. Providing grooves 13 on each friction plate 10 facilitates the filling of filler particles into each friction plate 10. This allows the filler particles to rub and engage with each other in both friction plates 10 when the two friction plates 10 move relative to each other, dissipating the structural motion energy.

[0032] In one embodiment, the filler particles include quartz sand and metal particles, where the metal particles are one or more of zinc, tin, lead, and aluminum. The choice of soft metal facilitates deformation and engagement with the quartz sand, thereby increasing energy dissipation. Of course, in other embodiments, the filler particles can be made of other materials, as long as they achieve the aforementioned effects, and are not specifically limited here.

[0033] In one embodiment, the maximum particle size of the filling particles and the maximum depth of the groove 13 should satisfy the following relationship:

[0034] t max ≤d max ≤1.5 tmax ;

[0035] 0.5 tmax ≤D max ≤0.7t max ;

[0036] In the above formula, d max is the maximum particle size of soft metal, D max is the maximum particle size of quartz sand, t max The maximum depth of the groove. The width and depth of the groove 13 are equal, and the depth range is 2-5mm. The maximum particle size range of quartz sand is 0.5t max to 0.7t max , the maximum particle size range of soft metal is t max to 1.5t max Since quartz sand has a Mohs hardness of 7, while soft metals like zinc, tin, lead, and aluminum all have Mohs hardnesses below 3, using small-sized quartz sand to fill the gaps between larger-sized soft metal particles minimizes the gaps between the filler particles. Furthermore, when fastener 20 tightens the friction plate, the soft metal deforms, allowing fastener 20 to securely lock the filler particles within confined space 12, ensuring sufficiently small pores within the confined space and dense filling. Specifically, when the quartz sand and soft metal slide relative to each other, the contact area between them is sufficiently large. The greater the deformation of the soft metal, the greater its energy dissipation capacity.

[0037] In one embodiment, the grooves 13 extend along the width of the friction plate 10. The depth of the grooves 13 increases first and then decreases along the length of the friction plate 10. The enclosed space 12 formed by two grooves 13 connected together is elliptical. This arrangement allows for more sets of grooves 13 to be provided along the length of the friction plate 10. The grooves 13 are shallower at the ends of the friction plate 10 in the width direction, while the grooves 13 become deeper closer to the center of the friction plate 10, allowing for greater granular filler capacity. This maximizes the energy dissipation of the granular filler during relative longitudinal slippage of the friction plates 10. Furthermore, the interaction force between adjacent friction plates 10 is concentrated in the center, effectively preventing breakage of the friction plates 10.

[0038] In one embodiment, a spacer is formed between two adjacent grooves 13, with the width of the spacer increasing inward from the surface of the friction plate 10. The fasteners 20 are bolts that secure the friction plates 10. The waist-shaped holes 11 also facilitate slippage between the friction plates 10 to dissipate structural motion energy. Therefore, the bolts should be tightened to ensure effective contact between the friction plates 10, but not too tight to prevent slippage. The filler particles should be filled in such a way that they provide sufficient engagement and friction between the filler particles and the dense grooves 13.

[0039] In one embodiment, two groups of waist-shaped holes 11 are arranged along the length of the friction plate 10. The two groups of waist-shaped holes 11 are symmetrically arranged on either side of the enclosed space 12. The fasteners 20 are bolts, and two groups of bolts are spaced apart within each group of waist-shaped holes. Each group of waist-shaped holes 11 has two holes, spaced apart along the length of the friction plate 10, thereby ensuring a tight fit of the friction plate 10.

[0040] In one embodiment, a connection portion for connecting to the building component 30 is provided at one end of the friction plate 10. This connection portion does not overlap with the projections of the ends of the remaining friction plates 10 in the stacking direction. The friction plates 10 comprise a friction portion and a connection portion. Multiple layers of friction plates 10 are stacked in a staggered arrangement such that the friction portions of two adjacent friction plates 10 are stacked in the stacking direction to form a friction region. The two connection portions are symmetrically located on either side of the overlapping friction region to facilitate secure connection between the connection portion and the building component 30.

[0041] In one embodiment, three sets of friction plates 10 are provided. From top to bottom, the three sets of friction plates 10 are, in order, an upper friction cover plate 10a, a main friction plate 10b, and a lower friction cover plate 10c. The connecting portions of the upper and lower friction cover plates 10a and 10c are clamped and fixed to the sides of one building component 30, while the connecting portion of the main friction plate 10b is inserted and fixed into another building component 30. The connecting portions are provided with screw holes for connection to the building component 30 via external connecting bolts 40. Alternatively, additional connecting members can be added to the building component 30 to connect to the friction plates 10. The building components 30 connected at both ends of the damper body should be placed in locations on the building structure where relative displacement is large or deformation is concentrated.

[0042] The present application stacks multiple layers of friction plates and arranges a closed space filled with filling particles of different hardness between the friction plates. When the building structure deforms and causes relative displacement between the multiple layers of friction plates, the inner wall of the closed space and the filling particles bite and rub against each other, hindering the displacement between the multiple layers of friction plates. The damage to the inner wall of the densely distributed closed space, the mutual friction between the filling particles and the friction cooperation between the friction plates are used to dissipate the structural motion energy, thereby improving the energy consumption capacity, making the energy consumption path wider and the energy consumption performance more stable.

[0043] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A composite particle-filled energy-dissipating damper of bite and friction, characterized in that: The bite and friction composite particle-filled energy dissipation damper comprises: The damper body includes at least three layers of stacked friction plates and fasteners connected between the at least three layers of friction plates, wherein a plurality of enclosed spaces are densely distributed between two adjacent friction plates, and waist-shaped holes are arranged on the friction plates, and the fasteners are inserted into the waist-shaped holes; A filler is arranged in the confined space, and the filler includes at least two filling particles with different hardnesses. The filling particles are clamped and fixed in the confined space under the action of the fastener.

2. The bite and friction composite particle-filled energy dissipation damper according to claim 1, characterized in that: The enclosed space is formed by connecting grooves respectively provided on two adjacent friction plates, and the cross section of the groove tends to shrink inward from the surface of the friction plate.

3. The bite and friction composite particle-filled energy dissipation damper according to claim 2, characterized in that: The filling particles include quartz sand and metal particles, and the metal particles are one or more combinations of zinc, tin, lead, and aluminum.

4. The bite and friction composite particle-filled energy dissipation damper according to claim 3, characterized in that: The maximum particle size of the filling particles and the maximum depth of the groove should satisfy the following relationship: t max ≤d max ≤1.5t max ; 0.5t max ≤D max ≤0.7t max ; In the above formula, d max is the maximum particle size of soft metal, D max is the maximum particle size of quartz sand, t max is the maximum depth of the groove.

5. The bite and friction composite particle-filled energy dissipation damper according to claim 2, characterized in that: The grooves are arranged to extend along the width direction of the friction plate, and the depths of the grooves increase first and then decrease along the extending direction thereof. The enclosed space formed by the butting of two grooves is elliptical.

6. The bite and friction composite particle-filled energy dissipation damper according to claim 5, characterized in that: A spacing layer is formed between two adjacent grooves, and the width of the spacing layer increases gradually from the surface of the friction plate toward the inside.

7. The bite and friction composite particle-filled energy dissipation damper according to claim 6, characterized in that: The waist-shaped holes are arranged in two groups along the length direction of the friction plate. The two groups of waist-shaped holes are symmetrically arranged on both sides of the enclosed space. The fasteners are bolts. Two groups of bolts are arranged at intervals in each group of waist-shaped holes.

8. The bite and friction composite particle-filled energy dissipation damper according to claim 7, characterized in that: A connection portion connected to a building component is provided at one end of the friction plate, and the connection portion does not overlap with projections of the other ends of the friction plates in the stacking direction.

9. The bite and friction composite particle-filled energy dissipation damper according to claim 8, characterized in that: The friction plates are provided in three groups, which are, from top to bottom, an upper friction cover plate, a main friction plate and a lower friction cover plate. The connecting portion of the upper friction cover plate and the connecting portion of the lower friction cover plate are clamped and fixed on both sides of one of the building components, and the connecting portion of the main friction plate extends into and is fixed to the other building component.

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