A viscous damper with rotational displacement amplification function

Abstract

The application discloses a viscous damper with rotation displacement amplification function, which comprises a guide inner tube and a guide outer tube, the guide inner tube is slidably limited in the guide outer tube, and a viscous energy dissipation system is connected between the guide inner tube and the guide outer tube through a pin shaft; when relative displacement occurs at both ends of the damper, the guide inner tube will freely slide in the guide outer tube, the rotation displacement of a rotating plate is amplified through a bridge type amplification mechanism, and then the rotating piston is driven to rotate and displace to push the viscous liquid to bear stress and complete energy dissipation.

Description

Technical Field

[0001] This invention relates to the field of dampers, and in particular to a viscous damper with rotational displacement amplification function. Background Technology

[0002] Existing viscous dampers are all tension-compression type energy dissipation devices and often do not have deformation amplification characteristics. They are usually placed in parts of the structure with large deformation. However, for some structures with small lateral deformation, such as cylinders, supporting frames, shear wall structures, or bridge structures with high energy dissipation requirements when the lateral deformation is small, the application of traditional viscous dampers will be greatly limited.

[0003] Therefore, there is an urgent need for a viscous damper with displacement amplification function, which can allow the inner guide tube to slide freely within the outer guide tube when relative displacement occurs at both ends of the damper. The rotational displacement of the rotating plate is amplified by the bridge amplification mechanism, thereby driving the rotating piston to rotate and push the viscous liquid to dissipate energy, thus solving the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a viscous damper with rotational displacement amplification function to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the present invention provides the following solution: The present invention provides a viscous damper with rotational displacement amplification function, comprising an inner guide tube and an outer guide tube, wherein the inner guide tube is slidably confined within the outer guide tube, and a viscous energy dissipation system is connected between the inner guide tube and the outer guide tube by a pin.

[0006] Preferably, the guide inner tube includes a sliding inner tube, the end of which is provided with a first end connecting tube, a first constraint end plate is provided between the first end connecting tube and the sliding inner tube, and a first ear plate is provided on the first constraint end plate.

[0007] Preferably, the guide outer tube includes a sliding outer tube, the sliding inner tube is slidably limited within the sliding outer tube, the end of the sliding outer tube is provided with a second end connecting tube, a second constraint end plate is provided between the second end connecting tube and the sliding outer tube, a second ear plate is provided on the second constraint end plate, and the viscous energy dissipation system is hinged to the first ear plate and the second ear plate respectively through the pin.

[0008] Preferably, the viscous energy dissipation system includes a rotating plate, with constraint end plates on both sides of the rotating plate. The constraint end plates are independent of the rotating plate and are tightly fitted together. A constraint steel pipe is sealed between the constraint end plates. The constraint steel pipe is filled with a viscous liquid and has a liquid control plate inside it.

[0009] Preferably, the rotating plate includes a force-transmitting rotating plate, one end of which is provided with a connecting hole and the other end is provided with a rotating pin. A rotating piston is provided on the side of the rotating pin, and a guide hole is provided on the rotating piston.

[0010] Preferably, the constraint end plate is provided with a shaft hole, the rotating pin is rotatably disposed in the shaft hole, the two sides of the shaft hole are provided with fixing grooves for limiting the liquid control plate, and the constraint end plate is provided with bolt holes around it for installing the fixing bolts.

[0011] Preferably, the restraining steel pipe includes a steel pipe with flanges at both ends, flange bolt holes on the flanges, and sealing rubber rings are provided between the flanges at both ends of the restraining steel pipe and the restraining end plate to prevent liquid from overflowing.

[0012] The present invention achieves the following beneficial technical effects compared to the prior art: 1. The present invention provides a viscous damper with rotational displacement amplification function, which has displacement and velocity amplification functions and can realize viscous energy dissipation under small deformation conditions; 2. The present invention provides a viscous damper with rotational displacement amplification function, which differs from traditional tension, compression, shear and bending dampers in that it has rotational deformation characteristics and can be applied to different parts of the structure to improve energy consumption efficiency; 3. The viscous damper with rotational displacement amplification function provided by the present invention does not provide additional stiffness to the structure under static load and does not change the fundamental period of the structure. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 A schematic diagram of a viscous damper structure with rotational displacement amplification function provided by the present invention; Figure 2 A schematic diagram of a sliding inner tube structure of a viscous damper with rotational displacement amplification function provided by the present invention; Figure 3 A schematic diagram of a sliding outer tube structure of a viscous damper with rotational displacement amplification function provided by the present invention; Figure 4 A schematic diagram of a viscous energy dissipation system with rotational displacement amplification function provided by the present invention; Figure 5 A schematic diagram of a rotating plate structure of a viscous damper with rotational displacement amplification function provided by the present invention; Figure 6 A schematic diagram of a viscous damper constraint end plate structure with rotational displacement amplification function provided by the present invention; Figure 7 A schematic diagram of a viscous damper constrained steel pipe structure with rotational displacement amplification function provided by the present invention; Figure 8 A schematic diagram of a viscous damper sealing collar with rotational displacement amplification function provided by the present invention. Detailed Implementation

[0015] 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 some embodiments of the present invention, and not all embodiments. 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.

[0016] The purpose of this invention is to provide a viscous damper with rotational displacement amplification function to solve the problems existing in the prior art.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Example 1: This embodiment provides a viscous damper with rotational displacement amplification function, such as... Figure 1 As shown, it includes an inner guide tube 1 and an outer guide tube 2. The inner guide tube 1 is slidably limited within the outer guide tube 2. A viscous energy dissipation system 3 is connected between the inner guide tube 1 and the outer guide tube 2 by a pin 4.

[0019] Specifically, such as Figure 2 As shown, the guide inner tube 1 includes a sliding inner tube 101. The end of the sliding inner tube 101 is provided with a first end connecting tube 102. A first constraint end plate 104 is provided between the first end connecting tube 102 and the sliding inner tube 101. A first ear plate 103 is provided on the first constraint end plate 104.

[0020] Furthermore, such as Figure 3As shown, the guide outer tube 2 includes a sliding outer tube 201, and a sliding inner tube 101 is slidably limited within the sliding outer tube 201. The end of the sliding outer tube 201 is provided with a second end connecting tube 202. A second constraint end plate 203 is provided between the second end connecting tube 202 and the sliding outer tube 201. A second ear plate 204 is provided on the second constraint end plate 203. The viscous energy dissipation system 3 is hinged to the first ear plate 103 and the second ear plate 204 respectively through a pin 4.

[0021] Furthermore, such as Figure 4 As shown, the viscous energy dissipation system includes a rotating plate 31, a fixing bolt 35, and a constraint end plate 34 on both sides of the rotating plate 31. A constraint steel pipe 33 is sealed between the constraint end plates 34. The constraint steel pipe 33 is filled with viscous liquid and a liquid control plate 32 is provided inside the constraint steel pipe 33.

[0022] Furthermore, such as Figure 5 As shown, the rotating plate 31 includes a force-transmitting rotating plate 3101. One end of the force-transmitting rotating plate 3101 is provided with a connecting hole, and the other end is provided with a rotating pin 3104. The side of the rotating pin 3104 is provided with a rotating piston 3102, and the rotating piston 3102 is provided with a guide hole 3103.

[0023] Furthermore, such as Figure 6 As shown, the constraint end plate 34 is provided with a shaft hole 3401, and the rotating pin 3104 is rotatably set in the shaft hole 3401. The two sides of the shaft hole 3401 are provided with fixing grooves 3402 for limiting the liquid control plate 32. The constraint end plate 34 is provided with bolt holes 3403 around it for installing fixing bolts 35.

[0024] Furthermore, such as Figure 7 As shown, the restraint steel pipe 33 includes a steel pipe 3301, and flanges 3302 are provided at both ends of the steel pipe 3301. Flange bolt holes 3303 are provided on the flanges 3302 at both ends of the restraint steel pipe 33. A sealing rubber ring 36 is provided between the flanges 3302 at both ends of the restraint steel pipe 33 and the restraint end plate 34 to prevent liquid from overflowing.

[0025] The present invention provides a viscous damper with rotational displacement amplification function. Its working principle is as follows: During loading, the inner guide tube 1 and the outer guide tube 2 undergo relative displacement, causing the rotating plate 31 to rotate relative to the pin shaft 4. This, in turn, drives the rotating piston 3102 to compress the viscous liquid in the four sealed chambers formed by the rotating piston 3102 and the liquid control plate 32, which flows through the guide hole 3103 to the adjacent chambers and generates viscous damping force to dissipate energy. The damper does not provide additional stiffness under static load. When the included angle α between the rotating plate 31 and the central axis of the inner guide tube 1 and the outer guide tube 2 is less than 45°, the rotational deformation of the viscous energy dissipation system will be amplified. For the specific principle, please refer to the "A self-resetting support with amplified energy dissipation mechanism" disclosed in patent document ZL202210249370.3.

[0026] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A viscous damper with rotational displacement amplification function, characterized in that: It includes an inner guide tube (1) and an outer guide tube (2), the inner guide tube (1) being slidably limited within the outer guide tube (2), and a viscous energy dissipation system (3) being connected between the inner guide tube (1) and the outer guide tube (2) via a pin (4). The guide inner tube (1) includes a sliding inner tube (101), and the end of the sliding inner tube (101) is provided with a first end connecting tube (102). A first constraint end plate (104) is provided between the first end connecting tube (102) and the sliding inner tube (101), and a first ear plate (103) is provided on the first constraint end plate (104). The guide outer tube (2) includes a sliding outer tube (201), and the sliding inner tube (101) is slidably limited within the sliding outer tube (201). The end of the sliding outer tube (201) is provided with a second end connecting tube (202). A second constraint end plate (203) is provided between the second end connecting tube (202) and the sliding outer tube (201). A second ear plate (204) is provided on the second constraint end plate (203). The viscous energy dissipation system (3) is hinged to the first ear plate (103) and the second ear plate (204) respectively through the pin (4). The viscous energy dissipation system (3) includes a rotating plate (31), and a pair of constraint end plates (34) are provided on each side of the rotating plate (31). The constraint end plates (34) close to the rotating plate (31) are independent of each other and closely fitted. A constraint steel pipe (33) is sealed between the pair of constraint end plates (34) on the same side. The constraint steel pipe (33) is filled with viscous liquid and a liquid control plate (32) is provided inside the constraint steel pipe (33). The rotating plate (31) includes a force-transmitting rotating plate (3101), one end of which is provided with a connecting hole and the other end is provided with a rotating pin (3104). The side of the rotating pin (3104) is provided with a rotating piston (3102), and the rotating piston (3102) is provided with a guide hole (3103). The constraint end plate (34) is provided with a shaft hole (3401), and the rotating pin (3104) is rotatably disposed in the shaft hole (3401). The shaft hole (3401) is provided with a fixing groove (3402) on both sides for limiting the liquid control plate (32). The constraint end plate (34) is provided with bolt holes (3403) around it for fixing the installation of bolts (35).

2. The viscous damper with rotational displacement amplification function according to claim 1, characterized in that: The constrained steel pipe (33) includes a steel pipe (3301), and flanges (3302) are provided at both ends of the steel pipe (3301). Flange bolt holes (3303) are provided on the flanges (3302), and sealing rubber rings (36) are provided between the flanges (3302) at both ends of the constrained steel pipe (33) and the constrained end plate (34) to prevent liquid from overflowing.

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