Self-centering viscous-friction rotational joint

Abstract

The present application relates to a kind of self-resetting viscous-friction rotary nodes, comprising: bracket;Rotary frame is rotatably connected with the bracket by rotating shaft, gear is also coaxially connected with it on the rotating shaft;Two covers are located above and below the rotating shaft respectively, rack is also provided on cover and engaged with the gear;Self-resetting energy dissipation device is connected with the bracket and cover respectively at both ends;And viscous energy dissipation device is connected with the bracket and cover respectively at both ends.The present application can realize the peak displacement, residual displacement and peak acceleration of structure, and can realize adjustable reset force and displacement amplification function simultaneously.

Description

Technical Field

[0001] This invention belongs to the field of building structure protection technology and relates to a self-resetting viscous-friction rotating node. Background Technology

[0002] Traditional seismic design based on ductility primarily dissipates seismic energy through the plastic deformation of structural members to prevent structural collapse. This inevitably leads to significant residual deformation after an earthquake. Repairing structures with substantial residual deformation is difficult and costly; some buildings are even beyond repair and must be demolished and rebuilt, resulting in significant resource waste. Self-resetting structures effectively overcome these drawbacks, exhibiting minimal residual deformation after an earthquake. Existing rotating self-resetting nodes typically exhibit a flag-shaped hysteretic response, effectively controlling peak and residual displacements. However, insufficient energy dissipation capacity leads to amplified peak acceleration and significant higher-order mode effects. Furthermore, existing rotating self-resetting nodes cannot achieve adjustable reset force, and their small rotation angle results in insufficient energy dissipation and reset capabilities. Summary of the Invention

[0003] The purpose of this invention is to provide a self-resetting viscous-friction rotating node to solve at least one of the following problems of existing rotating self-resetting nodes: they cause amplification of structural peak acceleration and obvious high-order mode effects, or they cannot achieve adjustable reset force, or they have insufficient energy dissipation and reset capabilities due to the small rotation angle of the node.

[0004] The objective of this invention can be achieved through the following technical solutions:

[0005] A self-resetting viscous-frictional rotating node, comprising:

[0006] bracket;

[0007] A rotating frame rotatably connected to the bracket via a rotating shaft, and a gear coaxially connected to the rotating shaft;

[0008] Two cover plates are located above and below the rotating shaft, respectively, and a rack that meshes with the gear is also provided on the cover plates;

[0009] A self-resetting energy-consuming device that connects the bracket and the cover plate at both ends respectively;

[0010] And a viscous energy dissipation device that connects the bracket and the cover plate at both ends respectively.

[0011] Furthermore, the bracket includes a first back plate and two bracket hooks arranged vertically on the first back plate and parallel to each other, and the bracket hooks are machined with hook grooves for placing the rotating shaft.

[0012] Furthermore, the rotating frame includes a second back plate, an ear plate vertically mounted on the second back plate, and a rotating shaft mounted on the ear plate, with a gear mounted at each end of the rotating shaft.

[0013] Furthermore, the cover plate includes a base plate and a connecting side plate that is vertically mounted on the base plate and used for connecting with the self-resetting energy dissipation device. The rack that meshes with the gear is also machined on the surface of the base plate.

[0014] Furthermore, the self-resetting energy dissipation device includes a left connector, a right connector, a connecting rod, a left pressure plate, a right pressure plate, a self-resetting spring, and a core rod. At least one connecting rod is fixedly installed on the left connector. The left and right pressure plates are slidably installed on the connecting rod. One end of the core rod is fixed to the right connector, and the other end passes through the right and left pressure plates in sequence. The self-resetting spring, with its two ends respectively abutting against the left and right pressure plates and applying preload, is also sleeved on the core rod. Limiting nuts for abutting against the outer surfaces of the left and right pressure plates are also provided on both sides of the connecting rod. A left tie nut and a right tie nut for abutting against the outer surfaces of the left and right pressure plates are also provided on the core rod.

[0015] Furthermore, the position and spacing of the limiting nut on the connecting rod are adjustable.

[0016] Furthermore, the position and spacing of the left tie nut and the right tie nut on the core rod can also be adjusted.

[0017] Furthermore, the viscous energy dissipation device includes:

[0018] The main cylinder is filled with viscous liquid;

[0019] A secondary cylinder that is connected to the right end of the main cylinder;

[0020] Left and right end caps are respectively installed at the left and right ends of the main cylinder.

[0021] Select one of the left connecting plate and the right connecting plate that connect the bracket and the cover plate respectively;

[0022] One end is connected to the right connecting plate, and the other end passes through the right end cover and the left end cover in sequence and extends into the auxiliary cylinder of the piston rod;

[0023] The piston is mounted on the piston rod and placed inside the main cylinder, and the piston is also provided with a hole that runs through the piston rod.

[0024] Furthermore, the self-resetting spring is a ring spring.

[0025] Furthermore, the holes are provided in several places and are evenly distributed on the piston.

[0026] Furthermore, the viscous liquid is silicone oil.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] (1) It can dissipate energy over a wide frequency range. Traditional self-resetting energy dissipation devices usually employ either displacement-related or velocity-related energy dissipation as a single energy dissipation mode. Velocity-related energy dissipation consumes less energy during low-frequency vibrations, while displacement-related energy dissipation consumes less energy during small displacements. This invention combines displacement-related and velocity-related energy dissipation, which can effectively complement each other in energy dissipation, dissipate energy over a wide frequency range, and has a wide range of applications.

[0029] (2) Excellent reset capability. Regardless of whether the node rotates clockwise or counterclockwise, the ring spring can always be in a state of further compression, and can always provide good reset capability.

[0030] (3) It can simultaneously control the peak displacement, residual displacement, and peak acceleration of the structure. The hysteresis response of traditional self-resetting energy dissipation devices usually exhibits a flag-shaped pattern, which can effectively control the peak displacement and residual displacement of the structure. However, due to insufficient energy dissipation capacity, it cannot effectively control the peak acceleration and higher-order vibration modes of the structure. This invention adds viscous energy dissipation to the pre-compressed ring spring self-resetting energy dissipation device that exhibits flag-shaped hysteresis, which can simultaneously control the peak displacement, residual displacement, and peak acceleration of the structure.

[0031] (4) Displacement amplification function. Due to the small rotation angle of the node, the traditional self-resetting node has insufficient energy dissipation and reset capabilities due to its small displacement stroke. This invention amplifies the node rotation displacement by setting a large gear, thereby increasing the stroke of the viscous energy dissipation device and the self-resetting energy dissipation device, and improving their reset and energy dissipation capabilities. The gear size can be set as needed to obtain the ideal rotation displacement.

[0032] (5) The preload of the spring is adjustable. Traditional self-resetting energy dissipation devices use a cylindrical connection, which cannot directly adjust the preload. This invention uses a rod connection, which can change the distance between the left and right limit plates by adjusting the left and right limit nuts as needed, thereby making it very convenient to adjust the preload of the ring spring.

[0033] (6) When the structure is equipped with the node proposed in this invention, during an earthquake, regardless of whether the node rotates clockwise or counterclockwise, the ring spring will always be further compressed. After the earthquake, when the structure is about to exhibit residual deformation, the compressed ring spring will provide a rebound force, pushing the structure back to its initial equilibrium position, thereby reducing residual deformation and achieving self-resetting. At the same time, during the node rotation process, both the self-resetting energy dissipation device and the viscous energy dissipation device can dissipate seismic energy, thereby reducing the peak dynamic response of the structure. Attached Figure Description

[0034] Figure 1 A schematic diagram of the overall structure of a self-resetting viscous-frictional rotating node;

[0035] Figure 2 This is an assembly diagram of a self-resetting viscous-friction rotating node.

[0036] Figure 3 This is a front view schematic diagram of a self-resetting viscous-frictional rotating node;

[0037] Figure 4 This is a rear view of a self-resetting viscous-frictional rotating node.

[0038] Figure 5 This is a structural diagram of the bracket;

[0039] Figure 6 This is a schematic diagram of the rotating frame.

[0040] Figure 7 This is a schematic diagram of a self-resetting energy dissipation device;

[0041] Figure 8 This is a schematic diagram of a self-resetting energy dissipation device under different states;

[0042] Figure 9 This is a schematic diagram of the cover plate.

[0043] Figure 10 This is a schematic diagram of a viscous energy dissipation device;

[0044] Figure 11 A schematic diagram of the mechanical model of a self-resetting viscous-frictional rotating node;

[0045] Explanation of markings in the diagram:

[0046] 1-Bracket, 2-Rotating frame, 3-Cover plate, 4-Viscous energy dissipation device, 5-Self-resetting energy dissipation device, 6-First back plate, 7-Bracket hook, 8-Second back plate, 9-Ear plate, 10-Rotating shaft, 11-Gear, 12-Connecting rod, 13-Left pressure plate, 14-Ring spring, 15-Right pressure plate, 16-Left limit nut, 17-Right limit nut, 18-Core rod, 19-Left tie nut, 20-Right tie nut, 21-Left connector, 22-Right connector, 23-Rack, 24-Base plate, 25-Side plate, 26-Right connecting plate, 27-Piston rod, 28-Right end cap, 29-Main cylinder, 30-Piston, 31-Silicone oil, 32-Left end cap, 33-Secondary cylinder, 34-Left connecting plate. Detailed Implementation

[0047] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0048] Unless otherwise specified, the functional components or structures in the following embodiments or examples are conventional components or structures used in the art to achieve the corresponding functions.

[0049] To address the problems of existing rotary self-resetting nodes leading to amplified peak acceleration and significant higher-order mode effects, inability to achieve adjustable reset force, or insufficient energy dissipation and reset capabilities due to small node rotation angles, this invention provides a self-resetting viscous-friction rotary node, the structure of which is described in [reference needed]. Figures 1 to 4 As shown, it includes:

[0050] Bracket 1;

[0051] The rotating frame 2 is rotatably connected to the bracket 1 via the rotating shaft 10, and a gear 11 is also coaxially connected to the rotating shaft 10.

[0052] Two cover plates 3 are located above and below the rotating shaft 10, and a rack 23 that meshes with the gear 11 is also provided on the cover plate 3;

[0053] A self-resetting energy-consuming device 5 is connected at both ends to the bracket 1 and the cover plate 3 respectively;

[0054] And a viscous energy dissipation device 4 that connects the bracket 1 and the cover plate 3 at both ends respectively.

[0055] For some specific implementation methods, please refer to [link / reference]. Figure 5As shown, the bracket 1 includes a first back plate 6 and two bracket hooks 7 arranged vertically on the first back plate 6 and parallel to each other. The bracket hooks 7 are machined with grooves for placing the rotating shaft 10. Specifically, the grooves can be U-shaped, allowing the rotating shaft 10 to rotate relative to the grooves when placed inside. Additionally, the first back plate 6 has bolt holes for connecting to the self-resetting energy dissipation device 5 and the viscous energy dissipation device 4, and can also connect to columns or column bases of the external main structure.

[0056] For some specific implementation methods, please refer to [link / reference]. Figure 6 As shown, the rotating frame 2 includes a second back plate 8, an ear plate 9 vertically mounted on the second back plate 8, and a rotating shaft 10 mounted on the ear plate 9. A gear 11 is mounted at each end of the rotating shaft 10. One gear 11 can be mounted at each end of the rotating shaft 10 as needed. The second back plate 8 and the ear plate 9 are fixedly connected together, and the rotating shaft 10 is also fixedly connected to the ear plate 9. Furthermore, the gear 11 of this invention has the function of amplifying the rotational displacement of the node; the size of the gear 11 can be set as needed to achieve a larger rotational displacement.

[0057] For some specific implementation methods, please refer to [link / reference]. Figure 9 As shown, the cover plate 3 includes a base plate 24 and a connecting side plate 25 vertically mounted on the base plate 24 for connection with the self-resetting energy dissipation device 5. A rack 23 that meshes with the gear 11 is also machined on the surface of the base plate 24. Preferably, bolt holes can be provided on the connecting side plate 25 for connection with the self-resetting energy dissipation device 5 and the viscous energy dissipation device 4. One or more self-resetting energy dissipation devices 5 connected to the cover plate 3 can be provided.

[0058] For some specific implementation methods, please refer to [link / reference]. Figure 7 and Figure 8 As shown, the self-resetting energy dissipation device 5 includes a left connector 21, a right connector 22, a connecting rod 12, a left pressure plate 13, a right pressure plate 15, a self-resetting spring, and a core rod 18. At least one connecting rod 12 is fixedly installed on the left connector 21. The left pressure plate 13 and the right pressure plate 15 are slidably installed on the connecting rod 12. One end of the core rod 18 is fixed to the right connector 22, and the other end passes through the right pressure plate 15 and the left pressure plate 13 in sequence. The self-resetting spring, with its two ends respectively abutting against the left pressure plate 13 and the right pressure plate 15 and applying a preload, is also sleeved on the core rod 18. Limiting nuts for abutting against the outer surfaces of the left pressure plate 13 and the right pressure plate 15 are also provided on both sides of the connecting rod 12. A left tie nut 19 and a right tie nut 20 for abutting against the outer surfaces of the left pressure plate 13 and the right pressure plate 15 are also provided on the core rod 18.

[0059] In a more specific embodiment, the position and spacing of the limiting nut on the connecting rod 12 are adjustable.

[0060] In a more specific embodiment, the position and spacing of the left tie nut 19 and the right tie nut 20 on the core rod 18 can also be adjusted.

[0061] In a more specific embodiment, multiple connecting rods 12 can be provided as needed, for example, four rods can be provided corresponding to the four corners of the first connector, and they can be parallel to each other. Meanwhile, the self-resetting spring can be a ring spring 14. Therefore, regardless of whether the self-resetting energy dissipation device 5 is under compression or tension, the ring spring 14 is always in a further compressed state. The friction between the inner and outer rings of the ring spring 14 provides both energy dissipation and reset capabilities.

[0062] For some specific implementation methods, please refer to [link / reference]. Figure 10 As shown, the viscous energy dissipation device 4 includes:

[0063] The main cylinder 29 is filled (preferably filled to full) with viscous liquid;

[0064] A secondary cylinder 33 is connected to the right end of the main cylinder 29;

[0065] Left end cap 32 and right end cap 28 are respectively installed at the left and right ends of the main cylinder 29;

[0066] Select one of the left connecting plate 34 and the right connecting plate 26 to connect the bracket 1 and the cover plate 3 respectively;

[0067] One end is connected to the right connecting plate 26, and the other end passes through the right end cover 28 and the left end cover 32 in sequence and then extends into the auxiliary cylinder 33 as piston rod 27.

[0068] A movable piston 30 is mounted on the piston rod 27 and placed inside the main cylinder 29. The movable piston 30 is also provided with a hole that runs through the piston rod 27.

[0069] In a more specific embodiment, the self-resetting spring is a ring spring 14.

[0070] In a more specific embodiment, the holes are provided in a plurality of form and are evenly distributed on the movable piston 30.

[0071] In a more specific embodiment, the viscous liquid is silicone oil 31.

[0072] Each of the above implementation methods can be implemented individually, or in any combination of two or more.

[0073] The above implementation methods will be described in more detail below with reference to specific embodiments.

[0074] Example 1:

[0075] The self-resetting viscous-friction rotating node in this embodiment consists of a bracket 1, a geared rotating frame 2, a rack-and-pinion cover plate 3, a viscous energy dissipation device 4, and a self-resetting energy dissipation device 5. Figures 1 to 4 As shown.

[0076] Bracket 1 consists of a first back plate 6 and two bracket hooks 7, as follows: Figure 5 As shown. The first back plate 6 and the bracket hook 7 are vertically fixed together. The bracket back plate has bolt holes for connecting the viscous energy dissipation device 4, the self-resetting energy dissipation device 5, and the columns or column feet of the main structure.

[0077] The rotating frame 2 is composed of a second back plate 8, an ear plate 9, a rotating shaft 10, and a gear 11, as follows: Figure 6 As shown. The second back plate 8 and ear plate 9 are vertically fixed together, and the rotating shaft 10 is vertically fixed together with the ear plate 9. A gear 11 is fixed to each end of the rotating shaft 10. The rotating frame 2 is placed on the two bracket hooks 7 of the bracket 1 via the rotating shaft 10. The gear 11 has the function of amplifying the rotational displacement of the node. The size of the gear 11 can be set as needed to achieve a larger rotational displacement.

[0078] The self-resetting energy dissipation device 5 is composed of a connecting rod 12, a left pressure plate 13, a ring spring 14, a right pressure plate 15, a left limit nut 16, a right limit nut 17, a core rod 18, a left tie nut 19, a right tie nut 20, a left connector 21, and a right connector 22. Figure 4As shown. Four connecting rods 12 pass through the left pressure plate 13 and four left limiting nuts 16. The left end of the connecting rod 12 is fixed to the left connecting head 21, and the right end of the connecting rod 12 passes through the right pressure plate 15 and is connected to the four right limiting nuts 17. The left pressure plate 13 and the right pressure plate 15 have holes for the connecting rods 12 to pass through. The diameter of the holes is larger than the diameter of the connecting rods 12, allowing the left and right pressure plates 13 and 15 to slide left and right along the connecting rods 12. A ring spring 14 is located between the left pressure plate 13 and the right pressure plate 15, applying a preload. The left limiting nut 16 is located to the left of the left pressure plate 13, and the right limiting nut is located to the right of the right pressure plate 15. By adjusting the left limiting nut 16 and the right limiting nut 17, the distance between the left pressure plate 13 and the right pressure plate 15 can be adjusted, thereby changing the preload on the ring spring 14. The core rod 18 passes through the annular spring 14, the left pressure plate 13, the right pressure plate 15, and the right tie nut 20. Its left end connects to the left tie nut 19, and its right end connects to the right connector 22. There is a hole between the left pressure plate 13 and the right pressure plate 15 for the core rod 18 to pass through; the diameter of the hole is larger than the diameter of the core rod 18, allowing it to pass freely through both plates. The left tie nut 19 is located to the left of the left pressure plate 13, and the right tie nut 20 is located to the right of the right pressure plate 15. The diameters of both the left tie nut 19 and the right tie nut 20 are larger than the diameters of the holes in the left pressure plate 13 and the right pressure plate 15 through which they pass. Therefore, when the self-resetting energy dissipation device 5 is under tension, the right connector 22 drives the core rod 18, the core rod 18 drives the left tie nut 19, and the left tie nut 19 drives the left pressure plate 13 to compress the annular spring 14. The right end of the annular spring 14 is kept in place by the right pressure plate 15 and the right limiting nut 17. Figure 7 and Figure 8 As shown. When the self-resetting energy dissipation device is under pressure, the right connector 22 drives the core rod 18, the core rod 18 drives the right tie nut 20, and the right tie nut 20 drives the right pressure plate 15 to compress the annular spring 14. The left end of the annular spring 14 is kept in place by the left pressure plate 13 and the left limit nut 16. Figure 8 As shown. Therefore, regardless of whether the self-resetting energy dissipation device 5 is under compression or tension, the annular spring 14 is always in a state of further compression, and the friction between the inner and outer rings of the annular spring 14 can provide both energy dissipation and reset capabilities.

[0079] The cover plate 3 is composed of a rack 23, a bottom plate 24, and a side plate 25, as follows: Figure 9 As shown. Two racks 23 are located on the lower part of the base plate 24 and fixed together, and the side plate 25 is located on the upper part of the base plate 24 and fixed together. The cover plate 3 is placed on the gear 11 of the rotating frame 2, and the rack 23 of the cover plate 3 and the gear 11 of the rotating frame 2 are engaged with each other. The side plate 25 of the cover plate 3 has bolt holes for connecting to the right connector 22 of the viscous energy dissipation device 4 and the self-resetting energy dissipation device 5 by bolts. The left connector 21 of the self-resetting energy dissipation device 5 is connected to the first back plate 6 of the bracket 1 by bolts.

[0080] The viscous energy dissipation device 4 consists of a right connecting plate 26, a piston rod 27, a right end cover 28, a main cylinder 29, a piston 30, silicone oil 31, a left end cover 32, a secondary cylinder 33, and a left connecting plate 34. Figure 10 As shown. The right end cap 28 and the left end cap 32 are located at the right and left ends of the main cylinder 29, respectively, and are connected to the main cylinder 29. The piston 30 and piston rod 27 are fixed together, passing through the right end cap 28 and the left end cap 32, and can move freely. The right end of the piston rod 27 is connected to the right connecting plate 26. The right end of the auxiliary cylinder 33 is connected to the main cylinder 29, and the other end is connected to the left connecting plate 34. During the tension and compression process, the piston rod 27 will drive the piston 30 to move in the main cylinder 29. At this time, the silicone oil 31 in the main cylinder 29 will consume energy through the holes on the piston 30.

[0081] During the rotation of the node, the rotating shaft 10 drives the gear 11 to rotate. The rotation of the gear 11 causes the rack 23 to move horizontally. The horizontal movement of the rack 23 causes the side plate 25 to pull and compress the viscous energy dissipation device 4 and the self-resetting energy dissipation device 5. During the pulling and compressing process, the ring spring 14 of the self-resetting energy dissipation device 5 is always in a further compressed state. The friction between the inner and outer rings of the ring spring 14 provides both reset capability and displacement-related energy dissipation capability during compression. At the same time, the viscous energy dissipation device 4 provides velocity-related energy dissipation capability during the pulling and compressing process. See details below. Figure 11 As shown, the mechanical model of the self-resetting energy dissipation device 5 is a flag shape with displacement-related energy dissipation, while the mechanical model of the viscous energy dissipation device 4 is an ellipse with velocity-related energy dissipation. When the rotation angle is small, the energy dissipation capacity of the self-resetting energy dissipation device 5 is small, while the energy dissipation of the viscous energy dissipation device 4 is independent of displacement. Therefore, the energy dissipation deficiency of the self-resetting energy dissipation device 5 can be compensated for in this case. When the node is affected by low-frequency vibration, the viscous energy dissipation device 4 will have insufficient energy dissipation due to the low velocity, while the energy dissipation capacity of the self-resetting energy dissipation device 5 is independent of velocity. Therefore, the energy dissipation deficiency of the viscous energy dissipation device 4 can be compensated for in this case. The outstanding advantage of this node compared to ordinary nodes is that it can dissipate vibration energy over a wide frequency range. This node can effectively control peak displacement, residual displacement, and peak acceleration simultaneously, while existing nodes usually cannot effectively control peak acceleration. Therefore, this node is suitable for vibration control of structures over a wide frequency range, not only for seismic resistance but also for wind resistance, etc.

[0082] The preloaded adjustable rotary self-resetting node in this embodiment is implemented as follows:

[0083] (1) Install bracket hook 7 on the back plate to form bracket 1.

[0084] (2) Install ear plate 9 on the back plate, then install rotating shaft 10 on ear plate 9, and then install gear 11 on both ends of rotating shaft 10 to form rotating frame 2.

[0085] (3) Install racks 23 on both sides of the base plate 24, and then install side plates 25 on the upper part of the base plate 24 to form a cover plate 3.

[0086] (4) Install right limit nuts 17 on each of the four tie rods, and then install right limit plates on the tie rods. Place the ring spring 14 in the center of the four tie rods, and then install the left limit plate and left limit nut 16 on the tie rods. Achieve the predetermined preload by adjusting the left limit nut 16. Install the core rod 18 inside the ring spring 14, then install the left tie nut 19 on the left end of the core rod 18, and then install the right tie nut 20 on the core rod 18 outside the right limit plate. Install the left connector 21 on the left end of the tie rod, and then install the right connector 22 on the right end of the core rod 18.

[0087] (5) The right connector 22 of the self-resetting energy dissipation device 5 is connected to the cover plate 3 of the base plate 24.

[0088] (6) Place the two cover plates 3 with the self-resetting energy dissipation device 5 on the upper and lower parts of the gear 11, and then connect the left connector 21 of the self-resetting energy dissipation device 5 to the back plate of the bracket 1.

[0089] (7) Install the left end cap 32 on the main cylinder 29, pass the piston rod 27 with the piston through the left end cap 32, fill the main cylinder 29 with silicone oil 31, and then install the right end cap 28. Install the auxiliary cylinder 33 on the main cylinder 29, connect the left connecting plate 34 and the auxiliary cylinder 33, and connect the right connecting plate 26 and the piston rod 27.

[0090] (8) Connect the left connecting plate 34 of the viscous energy dissipation device 4 and the cover plate 3 of the bottom plate 24, and then connect the left connecting plate 34 of the viscous energy dissipation device 4 and the back plate of the bracket 1.

[0091] (9) Connect the back plate of bracket 1 to the column, and connect the back plate of rotating frame 2 to the beam.

[0092] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A self-resetting viscous-friction rotating node, characterized in that, include: bracket; A rotating frame rotatably connected to the bracket via a rotating shaft, and a gear coaxially connected to the rotating shaft; Two cover plates are located above and below the rotating shaft, respectively, and a rack that meshes with the gear is also provided on the cover plates; A self-resetting energy-consuming device that connects the bracket and the cover plate at both ends respectively; And a viscous energy dissipation device that connects the bracket and the cover plate at both ends respectively.

2. The self-resetting viscous-friction rotating node according to claim 1, characterized in that, The bracket includes a first back plate and two bracket hooks arranged vertically on the first back plate and parallel to each other. The bracket hooks are machined with hook grooves for placing the rotating shaft.

3. The self-resetting viscous-friction rotating node according to claim 1, characterized in that, The rotating frame includes a second back plate, an ear plate vertically mounted on the second back plate, and a rotating shaft mounted on the ear plate, with a gear mounted at each end of the rotating shaft.

4. The self-resetting viscous-friction rotating node according to claim 1, characterized in that, The cover plate includes a base plate and a connecting side plate that is vertically mounted on the base plate and used to connect with the self-resetting energy dissipation device. A rack that meshes with the gear is also machined on the surface of the base plate.

5. A self-resetting viscous-friction rotating node according to claim 1, characterized in that, The self-resetting energy dissipation device includes a left connector, a right connector, a connecting rod, a left pressure plate, a right pressure plate, a self-resetting spring, and a core rod. At least one connecting rod is fixedly installed on the left connector. The left and right pressure plates are slidably installed on the connecting rod. One end of the core rod is fixed to the right connector, and the other end passes through the right and left pressure plates in sequence. The self-resetting spring, with its two ends respectively abutting against the left and right pressure plates and applying a preload, is also sleeved on the core rod. Limiting nuts for abutting against the outer surfaces of the left and right pressure plates are also provided on both sides of the connecting rod. Left tie nuts and right tie nuts for abutting against the outer surfaces of the left and right pressure plates are also provided on the core rod.

6. A self-resetting viscous-friction rotating node according to claim 5, characterized in that, The position and spacing of the limiting nuts on the connecting rod are adjustable; The position and spacing of the left and right tie nuts on the core rod are also adjustable.

7. A self-resetting viscous-friction rotating node according to claim 5, characterized in that, The self-resetting spring is a ring spring.

8. A self-resetting viscous-friction rotating node according to claim 1, characterized in that, The viscous energy dissipation device includes: Select one of the left connecting plate and the right connecting plate that connect the bracket and the cover plate respectively; The main cylinder is filled with viscous liquid; A secondary cylinder that is connected to and fixedly connected to the right end of the main cylinder and the left connecting plate; Left and right end caps are respectively installed at the left and right ends of the main cylinder. One end is connected to the right connecting plate, and the other end passes through the right end cover and the left end cover in sequence and extends into the auxiliary cylinder of the piston rod; The piston is mounted on the piston rod and placed inside the main cylinder, and the piston is also provided with a hole that runs through the piston rod.

9. A self-resetting viscous-friction rotating node according to claim 8, characterized in that, The piston has several holes, which are evenly distributed on the piston.

10. A self-resetting viscous-friction rotating node according to claim 8, characterized in that, The viscous liquid is silicone oil.

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