A kind of inerter synergistic energy dissipation device

Abstract

The utility model relates to building anti -seismic damping device technical field, specifically disclose a kind of inertial mass effect energy dissipation device, including lead screw, coaxial sleeve in the outer side of lead screw and with the shell screw joint cooperation of lead screw, coaxial sleeve in the outer side of lead screw and located in the central shaft in shell, viscous liquid stored in shell, blade assembly is set in shell and with viscous liquid cooperation generates damping force, with the joint one of lead screw one end connection and located in the outer side of shell, and with the joint two of shell far from the side connection of joint one and around lead screw axial rotation cooperation;The end of the lead screw close to joint two and between joint two form avoidance gap;The central shaft and shell around lead screw axial rotation cooperation.The utility model makes the shell realize high-speed rotation around lead screw by the linear motion of lead screw, so that the rotational inertia generated by shell provides inertial mass effect, simultaneously generates high premium damping force by viscous liquid under the action of blade assembly, realizes the double effect of "inertial mass+ damping".

Description

Technical Field

[0001] This utility model relates to the technical field of building seismic damping devices, and more specifically, to an inertial capacity enhancement energy dissipation device. Background Technology

[0002] Existing building structures often employ viscous dampers, tuned mass dampers (TMDs), and tuned liquid dampers (TLDs) for vibration reduction and energy dissipation under earthquake or wind loads. Tuned mass dampers dissipate energy by adding concentrated mass and elastic damping elements, but they are often limited by additional weight, volume, installation space, and maintenance costs in building renovation or addition scenarios.

[0003] In the prior art, in order to obtain a larger equivalent mass ratio, a device for "inertial capacity amplification" is often used, which improves the equivalent inertial parameters by increasing the displacement transmission ratio.

[0004] However, the existing "inertial capacity amplification" structure has a large overall mass. When installed on the top of the structure or at key nodes, it will increase the secondary load. Due to the increase of the secondary load, the device itself will have a large inertial force acting on the structure under seismic action during use, which will also greatly reduce the "mass amplification effect" of the inertial capacity device. There is a lack of existing technologies for a vibration isolation device that can achieve dual enhancement of damping and inertial capacitance to effectively reduce and isolate vibrations. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an inertial capacity enhancement energy dissipation device, which enables the housing to rotate at high speed around the axis of the lead screw through linear motion of the lead screw, thereby enabling the rotational inertia generated by the housing to provide an inertial capacity effect. At the same time, the viscous liquid generates a high damping force under the action of the blade assembly, realizing the dual enhancement of "inertial capacity + damping". The solution adopted by this utility model to solve the technical problem is: An inertial capacity-enhancing energy dissipation device includes a lead screw, a housing coaxially mounted on the outside of the lead screw and screwed to it, a central shaft coaxially mounted on the outside of the lead screw and located inside the housing, a viscous liquid stored in the housing, a blade assembly disposed inside the housing and interacting with the viscous liquid to generate damping force, a connector one connected to one end of the lead screw and located on the outside of the housing, and a connector two connected to the side of the housing away from the connector one and rotatably engaged around the lead screw axis; a clearance gap is formed between the end of the lead screw near the connector two and the connector two; the central shaft and the housing are rotatably engaged around the lead screw axis; Specifically, during use, the lead screw will be displaced along its axial direction, causing the housing connected to it to rotate around its axial direction, generating rotational inertia and providing inertial capacitance. At the same time, the rotation of the housing will cause shear flow between the viscous liquid and the blade assembly, resulting in the viscous liquid generating high damping force under the action of the blade assembly, thus achieving a dual effect of "inertial capacitance + damping".

[0006] In some possible implementations, in order to effectively achieve the rotation and sealing engagement between the lead screw and the housing, the housing includes a sleeve-shaped body coaxially arranged with the lead screw, and end cap assemblies disposed at both ends of the body and fitted onto the outside of the lead screw; the end cap assemblies are screwed to the lead screw and sealed; the central shaft is disposed between the two sets of end cap assemblies and rotates with the end cap assemblies around the lead screw axis.

[0007] In some possible implementations, in order to effectively achieve a screwed and sealed fit between the end cap assembly and the lead screw, thereby enabling the lead screw to drive the housing to rotate around its axis and preventing leakage of viscous liquid; the end cap assembly includes a cover plate fitted on the outside of the lead screw, a sealing ring disposed between the cover plate and the lead screw, and a nut disposed on the cover plate and screwed to the lead screw; the central shaft is located between the two sets of nuts and the two sets of nuts are rotatably engaged.

[0008] In some possible implementations, in order to effectively achieve the rotational engagement between the central shaft and the nut, so that the central shaft remains relatively stationary when the housing rotates around the lead screw axis, a planar bearing is provided between the nut and the central shaft, and the planar bearing is coaxially mounted on the outside of the lead screw.

[0009] In some possible implementations, in order to effectively achieve the installation of the blade assembly, the blade assembly is fixedly mounted on the side wall of the housing or on the central shaft.

[0010] In some possible implementations, in order for the blade assembly to interact with the viscous liquid and provide sufficient viscous damping force, the blade assembly is in multiple sets and arranged sequentially along the central axis.

[0011] In some possible implementations, in order to enable the blade assembly to simultaneously throttle the viscous liquid while shearing it, thereby further improving the damping force, each blade assembly includes multiple sets of blades evenly arranged around the central axis; and each set of blades is provided with through holes.

[0012] In some possible implementations, the blade assembly is a grille with through holes.

[0013] In some possible implementations, in order to effectively achieve the connection and rotational engagement between the second connector and the housing, and to ensure that the second connector does not rotate synchronously when the housing rotates, the second connector includes a second planar bearing disposed on the outside of the housing and coaxially mounted on the outside of the lead screw, and a connector mounted on the second planar bearing.

[0014] In some possible implementations, universal joints are provided between the first joint and the lead screw, and between the joint member and the second plane bearing; the lead screw is a ball screw.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention generates rotational inertia by rotating the housing through a lead screw, thus providing an inertial capacity effect. It also effectively achieves a dual effect of "inertial capacity + damping" by generating high damping force through the shearing and throttling action of the viscous liquid inside the housing under the action of the blade assembly and the pores. This invention improves the energy efficiency per unit volume and provides better damping force linearity by setting through holes on the blade assembly, so that the viscous liquid has a pore throttling effect during shear flow. Compared with simple shear, this invention provides better energy efficiency per unit volume and better damping force linearity. This invention adjusts the total moment of inertia by modifying the installation position, quantity, size, and through-hole size parameters of the blade assembly, thus achieving flexible configuration of the inertial capacity parameter; and in conjunction with viscous liquids, it enables wide-range and high-precision adjustment of damping characteristics. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 This is a three-dimensional structural schematic diagram of the present invention; Figure 5 This is a new side view of the utility model; in: 1. Lead screw; 2. Shell; 21. Cover plate; 22. Sealing ring; 23. Nut; 3. Central axis; 4. Blade assembly; 5. Connector 1; 6. Connector Two; 7. One type of thrust bearing; 8. Two-dimensional planar bearings. Detailed Implementation

[0017] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. The terms "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, "a" or "one," etc., do not indicate a quantity limitation, but rather indicate the existence of at least one. In the implementation of this application, "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more. For example, multiple positioning posts refer to two or more positioning posts. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0018] The present invention will now be described in detail.

[0019] like Figures 1-5 As shown: An inertial capacity enhancement energy dissipation device is used in existing and newly constructed building structures as a tuned inertial capacity-damping enhancement device; it includes a lead screw 1, a housing 2 coaxially mounted on the outside of the lead screw 1 and screwed to the lead screw 1, a central shaft 3 coaxially mounted on the outside of the lead screw 1 and located inside the housing 2, a viscous liquid stored in the housing 2, a blade assembly 4 disposed inside the housing 2 and interacting with the viscous liquid to generate damping force, a connector 5 connected to one end of the lead screw 1 and located on the outside of the housing 2, and a second connector 6 connected to the side of the housing 2 away from the connector 5 and rotatably engaged around the lead screw 1 axially; a clearance gap is formed between the end of the lead screw 1 near the second connector 6 and the second connector 6; the central shaft 3 and the housing 2 are rotatably engaged around the lead screw 1 axially. Specifically, during use, the lead screw 1 will be displaced along its axial direction, causing the housing 2 connected to it to rotate around its axial direction, generating rotational inertia and providing inertial capacitance effect. At the same time, due to the rotation of the housing 2, shear flow will occur between the viscous liquid and the blade assembly 4, causing the viscous liquid to generate high damping force under the action of the blade assembly 4, achieving the dual effect of "inertial capacitance + damping".

[0020] Preferably, the housing 2 in this invention is made of high-strength aluminum alloy material, such as 6061 or 7075 series; furthermore, the surface of the housing 2 is treated with anti-corrosion before assembly; by replacing the traditional steel flywheel with the housing 2 made of the material, the rotational inertia of the housing 2 itself and the internal components provides the inertial capacitance effect, which significantly reduces the physical weight of the device (weight reduction of 20%~30%), making it easier to install and maintain; The viscous liquid is a high-viscosity damping liquid such as glycerol-based or silicone oil, which is common in existing technologies; the filling degree of the viscous liquid in the shell 2 is controlled at about 95% to reserve enough space for thermal expansion during use; The lead screw 1 and the connector 2 6 form a clearance clearance to allow the lead screw 1 to move closer to the connector 2 6, thus avoiding interference with the axial movement of the lead screw 1.

[0021] In some possible implementations, in order to effectively achieve the rotational and sealing engagement between the lead screw 1 and the housing 2, the housing 2 includes a sleeve-shaped body coaxially arranged with the lead screw 1, and end cap assemblies arranged at both ends of the body and fitted onto the outside of the lead screw 1; the end cap assemblies are screwed to the lead screw 1 and sealed; the central shaft 3 is arranged between the two sets of end cap assemblies and rotates with the end cap assemblies around the axial direction of the lead screw 1. The end cap assembly is used to achieve a screw connection with the lead screw 1; at the same time, it cooperates with the body to form a chamber for storing viscous liquid. When the lead screw 1 moves along its axial direction, the end cap assembly will rotate due to its screw connection with the lead screw 1, thereby driving the body to rotate. This causes the viscous liquid in the chamber to interact with the blade assembly 4 to generate shear flow when the housing 2 rotates, thereby providing viscous damping force; and the rotation of the housing 2 generates rotational inertia, which provides inertial capacitance effect.

[0022] In some possible implementations, in order to effectively achieve a screwed and sealed connection between the end cap assembly and the lead screw 1, thereby enabling the lead screw 1 to drive the housing 2 to rotate around its axis and preventing leakage of viscous liquid; the end cap assembly includes a cover plate 21 fitted on the outside of the lead screw 1, a sealing ring 22 disposed between the cover plate 21 and the lead screw 1, and a nut 23 disposed on the cover plate 21 and screwed to the lead screw 1; the central shaft 3 is located between the two sets of nuts 23 and the two sets of nuts 23 are rotatably engaged.

[0023] The cover plate 21 is integrally formed with the body. A nut 23 is fixedly installed on the inner side of the cover plate 21 and is used to screw the lead screw 1. The lead screw 1 and the nut 23 form a lead screw pair, thereby converting linear motion into rotational motion and driving the housing 2 to rotate around the axis of the lead screw 1. The sealing ring 22 is set between the cover plate 21 and the lead screw 1 to seal the gap between the cover plate 21 and the lead screw 1, prevent the leakage of viscous liquid, and block external contaminants, so that the inside of the housing 2 forms a closed cavity.

[0024] In some possible implementations, in order to effectively achieve the installation of the blade assembly 4, the blade assembly 4 is fixedly installed on the side wall of the housing 2 or on the central shaft 3.

[0025] In some possible implementations, in order for the blade assembly 4 to cooperate with the viscous liquid and provide sufficient viscous damping force, the blade assembly 4 is in multiple sets and arranged sequentially along the axial direction of the central axis 3.

[0026] In some possible implementations, in order to enable the blade assembly 4 to simultaneously throttle the viscous liquid during shearing and further improve the damping force, each blade assembly 4 includes multiple sets of blades evenly arranged around the central axis 3; and each set of blades is provided with through holes. Specifically, the through hole is set along the axis of the lead screw 1. The through hole can be set as a square hole, a round hole, etc. The setting of the through hole will allow the viscous liquid to generate further damping force under the throttling effect of the pore.

[0027] In some possible implementations, in order to effectively achieve the rotational engagement between the central shaft 3 and the nut 23, such that the central shaft 3 remains relatively stationary when the housing 2 rotates axially around the lead screw 1, a planar bearing 7 is provided between the nut 23 and the central shaft 3, and the planar bearing 7 is coaxially mounted on the outside of the lead screw 1. The plane bearing is set between the two sets of nuts 23 and rotates through the plane bearing 7, so that the central shaft 3 will be stationary when the housing 2 rotates. When the blades are mounted on the central shaft 3, they will also be stationary; this allows the viscous liquid to effectively undergo shear flow under the action of the blades when the housing 2 rotates, providing viscous damping force.

[0028] In some possible implementations, the blade assembly 4 is a grille with through holes.

[0029] Furthermore, when the blade is mounted on the central shaft 3, the end of the blade away from the central shaft 3 will form a clearance gap with the inner wall of the housing 2; when the blade is mounted on the inner wall of the housing 2, the end of the blade away from the inner wall of the housing 2 will form a clearance gap with the central shaft 3. This clearance gap can be designed according to the usage requirements.

[0030] In some possible implementations, in order to effectively achieve the connection and rotational engagement between connector 2 6 and housing 2, and to ensure that connector 2 6 does not rotate synchronously when housing 2 rotates, connector 2 6 includes a plane bearing 2 8 disposed on the outside of housing 2 and coaxially mounted on the outside of lead screw 1, and a connector mounted on plane bearing 2 8; that is, a set of bearing rings of plane bearing 2 8 are mounted on the end cap on the side away from connector 1 5, and another set of bearing rings of plane bearing 2 8 are mounted on the side of connector closer to lead screw 1. A retainer with needle rollers in plane bearing 2 8 is disposed between the two sets of bearing rings, thereby achieving the rotational engagement between housing 2 and connector 2; when lead screw 1 makes linear motion, it can pass through plane bearing 2 8.

[0031] In some possible implementations, universal joints are provided between the connector 5 and the lead screw 1, and between the connector and the plane bearing 8. The universal joints will effectively eliminate installation errors and prevent bending moment from being transmitted to the lead screw pair, ensuring that the device is always in an ideal axial stress state. The lead screw 1 is a ball screw, and the corresponding nut 23 is a ball screw nut.

[0032] It should be noted that: when using this utility model, the total moment of inertia can be adjusted by changing the installation position, number, geometric dimensions, and size and number of holes of the blades, thereby matching the equivalent apparent mass required by the design.

[0033] This invention allows for flexible adjustment of the damping coefficient by selecting viscous liquids of different viscosities, adjusting the number of blades, their installation positions, and the number and diameter of holes on the blades. By rotating lead screws 1 with different pitches, the transmission ratio can be adjusted to meet the energy consumption requirements of different projects. This invention generates linear viscous damping through a liquid shear damping mechanism, avoiding the nonlinear hysteresis and uncertainty of solid friction; the damping force is proportional to the velocity, the hysteresis curve is a standard ellipse, and the energy dissipation efficiency is high and the predictability is strong. By changing the spacing, shape, or number of blades / grids, and by selecting liquids of different viscosities, a wide range of damping coefficients can be adjusted to adapt to various working conditions, from micro-vibration control to strong vibration energy dissipation. In this invention, the moment of inertia of the shell 2 is determined by its geometric dimensions, and the moment of inertia of the blade assembly 4 can be finely adjusted by replacing blades of different masses or shapes to achieve a precise match of apparent quality. Because this invention uses liquid damping, there are no wear parts, and there is no need to replace components such as friction plates or springs regularly, thus greatly reducing maintenance costs.

[0034] This invention is not limited to the specific embodiments described above. This invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An inertial capacity-enhanced energy dissipation device, characterized in that, The device includes a lead screw, a housing coaxially mounted on the outside of the lead screw and screwed to it, a central shaft coaxially mounted on the outside of the lead screw and located inside the housing, a viscous liquid stored in the housing, a blade assembly disposed inside the housing and interacting with the viscous liquid to generate damping force, a connector one connected to one end of the lead screw and located on the outside of the housing, and a connector two connected to the side of the housing away from the connector one and rotatably engaged around the lead screw axis; a clearance gap is formed between the end of the lead screw near the connector two and the connector two; the central shaft and the housing are rotatably engaged around the lead screw axis.

2. The inertial capacity enhancement energy dissipation device according to claim 1, characterized in that, The housing includes a sleeve-shaped body coaxially arranged with the lead screw, and end cap assemblies arranged at both ends of the body and fitted onto the outside of the lead screw; the end cap assemblies are screwed to the lead screw and sealed; the central shaft is arranged between the two sets of end cap assemblies and rotates with the end cap assemblies around the lead screw axis.

3. The inertial capacity enhancement energy dissipation device according to claim 2, characterized in that, The end cap assembly includes a cover plate fitted on the outside of the lead screw, a sealing ring disposed between the cover plate and the lead screw, and a nut disposed on the cover plate and screwed into the lead screw; the central shaft is located between the two sets of nuts and the two sets of nuts are rotatably engaged.

4. The inertial capacity enhancement energy dissipation device according to claim 3, characterized in that, A planar bearing is provided between the nut and the central shaft, and the planar bearing is coaxially mounted on the outside of the lead screw.

5. The inertial capacity enhancement energy dissipation device according to claim 1, characterized in that, The blade assembly is fixedly installed on the side wall of the housing or on the central shaft.

6. The inertial capacity enhancement energy dissipation device according to claim 4, characterized in that, The blade assembly consists of multiple sets arranged sequentially along the central axis.

7. The inertial capacity enhancement energy dissipation device according to claim 5, characterized in that, Each blade assembly includes multiple sets of blades evenly arranged around a central axis; each set of blades is provided with a through hole.

8. The inertial capacity enhancement energy dissipation device according to claim 4, characterized in that, The blade assembly is a grille with through holes.

9. An inertial capacity enhancement energy dissipation device according to any one of claims 1-8, characterized in that, The second connector includes a second planar bearing disposed on the outside of the housing and coaxially mounted on the outside of the lead screw, and a connector mounted on the second planar bearing.

10. The inertial capacity enhancement energy dissipation device according to claim 9, characterized in that, Universal joints are respectively provided between the first joint and the lead screw, and between the joint and the second plane bearing; the lead screw is a ball screw.

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