A multi-stage cooperative energy dissipation device

Abstract

This invention provides a multi-level coordinated energy-dissipating vibration reduction device, relating to the field of vibration reduction device technology. It includes two support arm assemblies and a friction energy-dissipating unit. Each support arm assembly includes two support arms and at least one first elastic element. One end of each of the two support arms is hinged to the other, and the other end is used to connect to an external structure. Both ends of the first elastic element are respectively hinged to the middle of the two support arms. The friction energy-dissipating unit is hinged between the hinge points of one end of each support arm in the two support arm assemblies. Through the geometric arrangement of the two support arm assemblies and the friction energy-dissipating unit, the macroscopic displacement of the support arms along the compression direction is transformed into a bidirectional compressive displacement perpendicular to the compression direction within the device. This achieves reliable transmission of large displacement input within a compact two-dimensional planar space, significantly improving the device's adaptability to different structural spaces.

Description

Technical Field

[0001] This invention relates to the field of vibration reduction device technology, and more specifically, to a multi-stage coordinated energy-dissipating vibration reduction device. Background Technology

[0002] During the operation of engineering or mechanical structures, external vibrations and other forces can cause significant relative displacements and vibration responses. To reduce damage to the main structural components or ensure the operational stability of mechanical structures, existing technologies typically incorporate vibration damping devices at structural nodes, between floors, or in the support system. However, current vibration damping devices usually employ single elastic devices or energy-dissipating damping devices to reduce the stress and deformation of the main structure.

[0003] The two types of vibration damping devices mentioned above often rely on tensile and compressive deformation in one direction or a single friction interface to dissipate energy. Their energy dissipation paths are relatively short and the number of energy dissipation interfaces is limited. Under large displacement input conditions, it is difficult to balance high energy dissipation capacity and reliable reset capability. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a multi-level coordinated energy-consuming vibration reduction device to solve the above problems.

[0005] The present invention adopts the following solution:

[0006] This application provides a multi-level coordinated energy-dissipating and vibration-damping device, including two support arm assemblies and a friction energy-dissipating unit; the support arm assembly includes two support arms and at least one first elastic element; one end of the two support arms is hinged to each other, and the other end is used to connect to an external structure; the two ends of the first elastic element are respectively hinged to the middle of the two support arms; the friction energy-dissipating unit is hinged between the hinge points of one end of the support arms of the two support arm assemblies; The friction energy dissipation unit includes a constraint sleeve and two end sleeves movably connected to both ends of the constraint sleeve. Two first friction elements are disposed inside the constraint sleeve. Screws are provided on the inner sides of the two opposing first friction elements. Screw sleeves are fitted onto the screws, and second friction elements are connected to the two screw sleeves. A second elastic element is disposed between the first friction elements and the end sleeves. When the energy dissipation and vibration damping device is connected to an external structure, the first and second elastic elements are in a pre-compression state. When the other end of the support arm is under pressure, the force of the first elastic element is overcome so that one end of the support arm pushes the two end sleeves closer together, thereby overcoming the force of the second elastic element and pushing the two first friction elements closer together. At this time, the first friction element and the inner wall of the constraint sleeve achieve frictional energy dissipation; while the second friction element rotates under the interaction of the screw sleeve and the screw, and achieves frictional energy dissipation with the inner wall of the constraint sleeve; when the other end of the support arm is not under pressure, it can return to the initial state under the action of the first elastic element and the second elastic element.

[0007] Furthermore, the support arm includes a first support arm and a second support arm; the first support arm and the second support arm are provided with waist-shaped grooves and are connected by high-strength bolts so that the first support arm and the second support arm can be adjusted axially.

[0008] Furthermore, the high-strength bolt is provided with an adapter, and the first elastic element is connected to the adapter.

[0009] Furthermore, the friction energy dissipation unit is arranged along the direction of pressure at the other end of the support arm, perpendicular to the direction of pressure applied to the support arm.

[0010] Furthermore, the other end of the support arm is hinged with an end connector to facilitate connection with an external structure.

[0011] Furthermore, one of the screws is provided with a left-hand thread, and the other screw is provided with a right-hand thread.

[0012] Furthermore, the first elastic element and the second elastic element are springs.

[0013] Furthermore, one end of the end sleeve is provided with a connecting lug, which is hinged to the hinge point.

[0014] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. High-efficiency displacement conversion and space utilization: Through the geometric arrangement of two support arm components and friction energy dissipation unit, the displacement of the support arm along the compression direction in the macroscopic structure is converted into bidirectional compressive displacement perpendicular to the compression direction inside the device. This achieves reliable transmission of large displacement input in a compact two-dimensional planar space, significantly improving the adaptability of the device to different structural spaces.

[0015] 2. Multi-stage series-coordinated energy dissipation mechanism: A series-enhanced energy dissipation mode of "sliding friction + rotational friction" is formed. The first stage of sliding friction dissipates energy in linear motion, while the second stage of rotational friction passively converts linear motion into rotational motion for energy dissipation. The two energy dissipation interfaces work together, and the energy dissipation density is significantly higher than that of a single friction mechanism. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a multi-level coordinated energy-consuming vibration reduction device according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a multi-level coordinated energy-consuming vibration reduction device according to an embodiment of the present invention; Figure 3 This is a partially exploded structural diagram of the friction energy dissipation unit of a multi-level coordinated energy dissipation and vibration reduction device according to an embodiment of the present invention. Figure 4 This is a cross-sectional structural schematic diagram of the friction energy dissipation unit of a multi-level coordinated energy dissipation and vibration reduction device according to an embodiment of the present invention; Icons: First support arm 1, Second support arm 2, Friction energy dissipation unit 3, First elastic element 5, Constraint sleeve 6, End sleeve 7, Connecting ear 8, First friction element 9, Screw 10, Screw sleeve 11, Second friction element 12, Second elastic element 13, End connector 14, Adapter 15, Waist groove 16. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example Combination Figures 1 to 4As shown, this embodiment provides a multi-level coordinated energy-dissipating and vibration-damping device, including two support arm assemblies and a friction energy-dissipating unit 3; the support arm assembly includes two support arms and at least one first elastic element 5; one end of the two support arms is hinged to each other by high-strength bolts, and the other end is hinged to an end connector 14 to facilitate connection with an external structure; the two ends of the first elastic element 5 are respectively hinged to the middle of the two support arms; the friction energy-dissipating unit 3 is hinged between the hinge points of one end of the support arm in the two support arm assemblies.

[0020] The friction energy dissipation unit 3 is arranged perpendicular to the pressure direction at the other end of the support arm; Figure 1 For example, the other end of the support arm is pressed in a vertical direction, while the friction energy dissipation unit 3 is arranged horizontally.

[0021] The friction energy dissipation unit 3 includes a constraint sleeve 6 and two end sleeves 7 movably connected to both ends of the constraint sleeve 6. One end of each end sleeve 7 has a connecting lug 8 hinged to the hinge point. The connecting lug 8 is designed to accommodate minute angle changes during loading. Two first friction elements 9 are disposed inside the constraint sleeve 6. Screws 10 are provided on the inner sides of the two opposing first friction elements 9. One screw 10 has a left-hand thread, and the other has a right-hand thread. Screw sleeves 11, adapted to the threads on the bolts, are fitted onto the screws 10. Second friction elements 12 are connected to the two screw sleeves 11. A second elastic element 13 is disposed between the first friction elements 9 and the end sleeves 7. When the energy dissipation and vibration damping device is connected to an external structure, the first elastic element 5 and the second elastic element 13 are in a pre-compression state. The first elastic element 5 and the second elastic element 13 are springs. The first friction elements 9 and the second friction elements 12 are made of a material with a high coefficient of friction, and their outer diameter is slightly larger than the inner diameter of the constraint sleeve 6.

[0022] In this embodiment, the support arm includes a first support arm 1 and a second support arm 2; the first support arm 1 and the second support arm 2 are provided with waist-shaped grooves 16 and are connected by high-strength bolts so that the first support arm 1 and the second support arm 2 can be adjusted axially to adapt to the external structure. An adapter 15 is provided on the high-strength bolt, and the first elastic element 5 is connected to the adapter 15.

[0023] When the other end of the support arm is as follows Figure 1When the upper end of the first support arm 1 is pressed, the force of the first elastic element 5 is overcome so that one end of the support arm pushes the two end sleeves 7 closer together, thereby overcoming the force of the second elastic element 13 and pushing the two first friction elements 9 closer together. At this time, the first friction element 9 and the inner wall of the constraint sleeve 6 achieve the first stage of moving friction energy dissipation; while the second friction element 12 rotates under the interaction of the screw sleeve 11 and the screw 10, and achieves the second stage of rotational friction energy dissipation with the inner wall of the constraint sleeve 6; when the other end of the support arm is not pressed, it can return to the initial state under the action of the first elastic element 5 and the second elastic element 13.

[0024] The above method utilizes the geometric characteristics of an approximate X-shaped intersecting mechanism to transform the macroscopic longitudinal interlayer displacement of the structure into the horizontal bidirectional compressive displacement of the friction energy dissipation unit 3. This achieves reliable transmission of large displacement input within a compact two-dimensional planar space, significantly improving the device's adaptability to different structural spaces. Furthermore, a multi-level series-connected synergistic energy dissipation and vibration reduction mechanism is formed, including elastic damping of elastic components, sliding friction energy dissipation and vibration reduction, and rotational friction energy dissipation and vibration reduction in a series-enhanced energy dissipation and vibration reduction mode. Its vibration reduction effect is significantly higher than that of a single damping or single friction energy dissipation and vibration reduction mechanism.

[0025] By utilizing the symmetrical arrangement of left and right spiral threads, the linear driving force of the second spring is smoothly and passively converted into the rotational motion of the threaded sleeve 11, avoiding the complex mechanical transmission and eccentricity problems caused by active rotation drive. The structure is simple and the operation is reliable.

[0026] The first spring on the obliquely set support arm and the second spring in the friction energy dissipation unit 3 store energy synchronously during loading and release elastic potential energy in tandem during unloading, forcibly driving the support arm and the components in the friction energy dissipation unit 3 to reset in reverse along the original loading path, ensuring that the residual displacement of the device after vibration approaches zero.

[0027] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "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 mechanical connection or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A multi-stage coordinated energy-dissipating vibration reduction device, characterized in that, It includes two support arm assemblies and a friction energy dissipation unit (3); the support arm assembly includes two support arms and at least one first elastic element (5); one end of the two support arms is hinged to each other, and the other end is used to connect to an external structure; the two ends of the first elastic element (5) are respectively hinged to the middle of the two support arms; the friction energy dissipation unit (3) is hinged between the hinge points of one end of the support arm in the two support arm assemblies; The friction energy dissipation unit (3) includes a constraint sleeve (6) and two end sleeves (7) movably connected to both ends of the constraint sleeve (6); two first friction elements (9) are provided inside the constraint sleeve (6); screws (10) are provided on the inner sides of the two first friction elements (9); threaded sleeves (11) are sleeved on the screws (10), and second friction elements (12) are connected to the two threaded sleeves (11); a second elastic element (13) is provided between the first friction elements (9) and the end sleeves (7); when the energy dissipation and vibration reduction device is connected to the external structure, the first elastic element (5) and the second elastic element (13) are in a pre-compression state. When the other end of the support arm is under pressure, it overcomes the force of the first elastic element (5) to push the two end sleeves (7) closer to each other, and then overcomes the action of the second elastic element (13) to push the two first friction elements (9) closer to each other. At this time, the first friction element (9) and the inner wall of the constraint sleeve (6) achieve frictional energy dissipation; while the second friction element (12) rotates under the interaction of the screw sleeve (11) and the screw (10) and achieves frictional energy dissipation with the inner wall of the constraint sleeve (6); when the other end of the support arm is not under pressure, it can return to the initial state under the action of the first elastic element (5) and the second elastic element (13).

2. The multi-stage coordinated energy-consuming vibration reduction device according to claim 1, characterized in that, The support arm includes a first support arm (1) and a second support arm (2); the first support arm (1) and the second support arm (2) are provided with waist-shaped grooves (16) and are connected by high-strength bolts so that the first support arm (1) and the second support arm (2) can be adjusted along the axial direction.

3. The multi-stage coordinated energy-consuming vibration reduction device according to claim 2, characterized in that, The high-strength bolt is provided with an adapter (15), and the first elastic element (5) is connected to the adapter (15).

4. The multi-stage coordinated energy-consuming vibration reduction device according to claim 1, characterized in that, The friction energy dissipation unit (3) is arranged along the pressure direction of the other end of the support arm, which is perpendicular to the support arm.

5. The multi-stage coordinated energy-consuming vibration reduction device according to claim 1, characterized in that, The other end of the support arm is hinged to an end connector (14) for connection to an external structure.

6. The multi-stage coordinated energy-consuming vibration reduction device according to claim 1, characterized in that, One of the screws (10) is provided with a left-hand thread, and the other screw (10) is provided with a right-hand thread.

7. The multi-stage coordinated energy-consuming vibration reduction device according to claim 1, characterized in that, The first elastic element (5) and the second elastic element (13) are springs.

8. The multi-stage coordinated energy-consuming vibration reduction device according to claim 1, characterized in that, One end of the end sleeve (7) is provided with a connecting lug (8), which is hinged to the hinge point.

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