Self-adjusting three-element energy dissipation viscous damper

Abstract

The application discloses a self-adjusting ternary energy consumption viscous damper, which comprises an upper connecting transmission box, a viscous damping liquid sealing box, a transmission rod, a rotating shaft, a composite blade and a pin shaft. The application converts the translation of the upper connecting transmission box into the rotation of the composite blade. The rotation of the composite blade cuts the viscous damping liquid to consume energy, thereby realizing one-dimensional energy consumption. The sliding plate on the composite blade reciprocates in the T-shaped sliding groove under the joint action of the rotating centrifugal force and the spring. The reciprocating sliding of the sliding plate cuts the viscous damping liquid to realize two-dimensional energy consumption. Meanwhile, the change of the rotating radius of the sliding plate forms a variable inerter mechanism, thereby realizing ternary energy consumption. In addition, the sliding of the sliding plate can shield the small holes at different positions, so that the damping liquid flows through the small holes at different positions at different speeds, thereby making the change trend of the damping force and the speed opposite, and achieving the self-adjusting function of the damping force.

Description

Technical Field

[0001] This invention relates to the field of energy dissipation and vibration reduction technology, specifically a self-adjusting ternary energy-dissipating viscous damper. Background Technology

[0002] Energy dissipation and vibration reduction technology involves adding dampers to a structure to reduce earthquake damage by dissipating seismic energy. Experimental and theoretical research shows that energy dissipation and vibration reduction technology is one of the most effective technical means to mitigate earthquake disasters. Viscous dampers are widely used in energy dissipation and vibration reduction technology, including two main categories: cylindrical viscous dampers and viscous damping walls.

[0003] Cylindrical viscous dampers rely on the reciprocating motion of a piston within a sealed cylinder filled with viscous damping fluid. This forces the damping fluid through the piston's orifices and gaps, thus dissipating seismic energy. During operation, the pressure on both sides of the piston is often high, and the reciprocating motion raises the temperature of the damping fluid, exposing the damper to a high-temperature, high-pressure environment. Excessive pressure can cause leakage and even cylinder failure. In contrast, viscous damping walls operate at normal temperature and pressure. Their wall-like shape allows for better integration with the building environment, and they are less prone to leakage, making them popular among designers. However, the viscous damping fluid inside viscous damping walls is unique, requiring high viscosity and stability. Its research and production are challenging, resulting in a high price.

[0004] In addition, conventional cylindrical viscous dampers and viscous damping walls do not have self-adjusting functions. During super-intense earthquakes, the damping force often increases suddenly due to excessive velocity on both sides of the damper connection end, which can easily lead to problems such as shearing of the damper connection parts, deformation of the piston rod, and damage to the substructure. Summary of the Invention

[0005] To address the aforementioned issues, this invention proposes a self-adjusting ternary energy-dissipating viscous damper. This damper achieves ternary energy dissipation, possesses strong energy dissipation capabilities, and is a normal-temperature, normal-pressure viscous damper, avoiding high-pressure sealing problems and preventing leakage. Furthermore, it utilizes conventional viscous damping fluid, resulting in low cost. Its wall-shaped design facilitates integration with the building environment. Additionally, the damper features a self-adjusting function, preventing damage to connecting parts, piston rod deformation, substructure damage, and even cylinder explosion caused by excessive instantaneous damping force, thus more effectively protecting the building structure.

[0006] The technical solution of this invention is as follows:

[0007] A self-adjusting viscous damper includes an upper connecting transmission box 1, a viscous damping liquid sealing box 2, transmission rods 3, a rotating shaft 4, composite blades 5, and a pin 6. The upper connecting transmission box 1 has a vertical through hole on its side, through which the pin 6 passes. Both ends of the pin 6 located outside the upper connecting transmission box 1 are provided with transmission rods 3. The other ends of the two transmission rods 3 are provided at both ends of the rotating shaft 4. Three or more composite blades 5 are uniformly fixed in the middle of the rotating shaft 4. The composite blades 5 are located inside the viscous damping liquid sealing box 2.

[0008] The viscous damping fluid sealing box 2 is a closed box containing viscous damping fluid, such as silicone oil.

[0009] The composite blade 5 includes a blade body 5-1, a sliding plate 5-2, a spring 5-3, and a stop block 5-4. A T-shaped groove is longitudinally arranged on the blade body 5-1. One end of the T-shaped groove is closed, and the other end is open. A stop block 5-4 is arranged at the opening. The sliding plate 5-2 and the spring 5-3 are arranged inside the T-shaped groove. One end of the sliding plate 5-2 is provided with a spring, and the other ends of the two springs are the closed end of the T-shaped groove and the stop block 5-4, respectively.

[0010] The bottom of the T-shaped groove on the blade body 5-1 is provided with multiple permeable small holes.

[0011] The side of the stop block 5-4 is T-shaped and matches the T-shaped slide groove. The stop block 5-4 is fixed to the blade body 5-1 by bolts 5-5. The position of the stop block 5-4 can be changed within the T-shaped slide groove to adjust the length of the spring 5-3.

[0012] The working principle of the self-adjusting ternary energy-dissipating viscous damper of this invention:

[0013] The upper connecting transmission box 1 and the bottom of the viscous damping fluid sealing box 2 are connected to the upper and lower ends of the floor, respectively. When an earthquake occurs, the upper connecting transmission box 1 and the viscous damping fluid sealing box 2 undergo relative horizontal displacement. The upper connecting transmission box 1 converts the translational motion into the rotation of the rotating shaft 4 through the vertical through hole, pin 6, and transmission rod 3, which in turn drives the rotation of the composite blade 5 fixed on the rotating shaft 4. The rotation of the composite blade 5 cuts the viscous damping fluid, consuming energy and achieving one-dimensional energy consumption. The sliding plate 5-2 on the composite blade 5 slides back and forth in the T-shaped groove under the combined action of the rotational centrifugal force and the spring 5-3. The sliding plate 5-2 cuts the viscous damping fluid by sliding back and forth, achieving two-dimensional energy consumption. At the same time, the change in the rotation radius of the sliding plate 5-2 forms a variable inertia and volume mechanism. The three-dimensional energy consumption is as follows: In addition, the sliding plate 5-2 can block the reserved small holes at different positions on the composite blade 5, forcing the damping fluid to flow through the small holes at different positions at different speeds. When the rotation speed of the composite blade 5 is too high, under the action of centrifugal force, the sliding plate 5-2 slides to the far end of the composite blade 5, blocking the small hole at the far end. The viscous damping fluid with a lower flow speed passes through the small hole closer to the rotation center, thus reducing the damping force and protecting the damper connectors and substructures. When the speed of the composite blade 5 is too low, under the action of the spring 5-3, the sliding plate 5-2 slides to the near end of the composite blade 5, blocking the small hole at the near end. The viscous damping fluid with a higher speed passes through the small hole farther from the rotation center, thus increasing the damping force and realizing the self-adjustment function of the damping force.

[0014] This invention utilizes a rotation mechanism to generate a large fluid cutting linear velocity, utilizes the combined action of centrifugal force and spring to reciprocate the cutting of the damping fluid by a sliding plate, and utilizes the change in the rotation radius of the sliding plate to form a variable inertial-capacitance mechanism, thereby achieving ternary energy dissipation and improving the energy dissipation capacity of the viscous damper.

[0015] This invention is a viscous damper for normal temperature and pressure, which avoids the problem of oil leakage under high temperature and high pressure and improves the durability of the viscous damper.

[0016] This invention utilizes the sliding of the sliding plate in the composite rotating blade to achieve self-adjusting damping force, thus avoiding damage such as damage to the damper's connecting parts, cylinder explosion, and piston rod breakage caused by excessive instantaneous velocity during an earthquake.

[0017] This invention has a simple structure and is easy to transport. It does not require secondary pouring during construction and can be installed with the main body in one go, making construction convenient. Attached Figure Description

[0018] Figure 1 A schematic diagram of the external structure of a self-adjusting ternary energy-dissipating viscous damper;

[0019] Figure 2 A cross-sectional view of the viscous damping fluid sealing box of a self-adjusting ternary energy-dissipating viscous damper;

[0020] Figure 3 This is an exploded view of the transmission rod section of a self-adjusting ternary energy-dissipating viscous damper.

[0021] Figure 4 This is a split view of the composite blade;

[0022] In the diagram, 1-upper connecting transmission box, 2-viscous damping fluid sealing box, 3-transmission rod, 4-rotating shaft, 5-composite blade, 6-pin, 5-1-blade body, 5-2-sliding plate, 5-3-spring, 5-4-stop block, 5-5-bolt. Detailed Implementation

[0023] The present invention will be further described below with reference to specific embodiments.

[0024] Example 1

[0025] A self-adjusting viscous damper, such as Figure 1 , 2 As shown in Figure 3, the device includes an upper connecting transmission box 1, a viscous damping fluid sealing box 2, a transmission rod 3, a rotating shaft 4, composite blades 5, and a pin 6. The upper connecting transmission box 1 has a vertical through hole on its side, through which the pin 6 passes. Both ends of the pin 6 located outside the upper connecting transmission box 1 are provided with transmission rods 3. The other ends of the two transmission rods 3 are provided at both ends of the rotating shaft 4. Both ends of the transmission rods 3 have a semi-circular structure. The semi-circular diameter of the end connected to the pin 6 is smaller than the radius of the end connected to the pin 6. The transmission rods 3 gradually widen from top to bottom. The overall structure of the transmission shaft 3 is similar to that of a pipa (a Chinese lute). Four composite blades 5 are uniformly fixed (welded) in the middle of the rotating shaft 4. The composite blades 5 are located inside the viscous damping fluid sealing box 2. The viscous damping fluid sealing box 2 is a closed box containing viscous damping fluid. In this embodiment, a silicone oil with a high viscosity is used.

[0026] like Figure 4As shown, the composite blade 5 includes a blade body 5-1, a sliding plate 5-2, a spring 5-3, and a stop block 5-4. A T-shaped groove (T-shaped on the side) is longitudinally arranged on the blade body 5-1. One end of the T-shaped groove is closed, and the other end is open, with a stop block 5-4 at the opening. The sliding plate 5-2 and spring 5-3 are arranged inside the T-shaped groove. One end of the sliding plate 5-2 is equipped with a spring, and the other ends of the two springs are the closed end of the T-shaped groove and the stop block 5-4, respectively. Multiple passages are arranged at the bottom of the T-shaped groove on the blade body 5-1. The small perforation allows the viscous damping fluid to pass through and flow. The side of the stop 5-4 is T-shaped and matches the T-shaped groove. The stop 5-4 is fixed to the blade body 5-1 by bolts 5-5. The position of the stop 5-4 can be changed within the T-shaped groove to adjust the length of the spring 5-3. The two springs 5-3 mounted on both sides of the sliding plate 5-2 are used to assist the sliding plate 5-2 in sliding and resetting. The sliding plate 5-2 cuts the viscous damping fluid vertically, forming a binary energy dissipation mechanism with the rotational friction and cutting of the viscous damping fluid by the composite blade 5.

[0027] In this embodiment, bolt holes are provided at the top of the upper connecting transmission box 1 and the bottom of the viscous damping fluid sealing box 2 of the damper. During installation, the bottom of the upper connecting transmission box 1 and the bottom of the viscous damping fluid sealing box 2 are connected to the upper and lower ends of the floor, respectively. When an earthquake occurs, the upper connecting transmission box 1 and the viscous damping fluid sealing box 2 undergo relative horizontal displacement. The upper connecting transmission box 1 converts the translational motion into the rotation of the rotating shaft 4 through the vertical through hole, the pin 6, and the transmission rod 3, which in turn drives the rotation of the composite blade 5 fixed on the rotating shaft 4. The rotation of the composite blade 5 cuts the viscous damping fluid and consumes energy, realizing one-dimensional energy consumption. The sliding plate 5-2 on the composite blade 5 slides back and forth in the T-shaped groove under the combined action of the rotational centrifugal force and the spring 5-3. The sliding plate 5-2 cuts the viscous damping fluid by sliding back and forth, realizing two-dimensional energy consumption. At the same time, the change of the rotation radius of the sliding plate 5-2 forms a variable inertial capacity mechanism, realizing three-dimensional energy consumption. In addition, the sliding plate 5-2 can block the reserved small holes at different positions on the composite blade 5, forcing the damping fluid to flow through the permeable small holes at different speeds. When the rotation speed of the composite blade 5 is too high, the sliding plate 5-2 slides to the far end of the composite blade 5 under the action of centrifugal force, blocking the permeable small hole at the far end. The viscous damping fluid with a lower flow speed passes through the permeable small hole closer to the rotation center, thus reducing the damping force and protecting the damper connectors and substructures. When the speed of the composite blade 5 is too low, the sliding plate 5-2 slides to the near end of the composite blade 5 under the action of the spring 5-3, blocking the permeable small hole at the near end. The viscous damping fluid with a higher speed passes through the permeable small hole farther from the rotation center, thus increasing the damping force and realizing the self-adjustment function of the damping force. To prevent the sliding plate 5-2 from sliding out, the T-shaped end block 5-4 is fixed at the end of the blade body 5-1 with a fixing bolt 5-5.

[0028] The above embodiments are one implementation of the present invention. Other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative invention are all within the protection scope of the present invention.

Claims

1. A self-adjusting ternary energy-dissipating viscous damper, characterized in that, It includes an upper connecting transmission box (1), a viscous damping liquid sealing box (2), a transmission rod (3), a rotating shaft (4), a composite blade (5), and a pin (6). The upper connecting transmission box (1) has a vertical through hole on its side. The pin (6) passes through the vertical through hole. The pin (6) has a transmission rod (3) at both ends outside the upper connecting transmission box (1). The other ends of the two transmission rods (3) are set at both ends of the rotating shaft (4). Three or more composite blades (5) are evenly arranged in the middle of the rotating shaft (4). The composite blades (5) are set inside the viscous damping liquid sealing box (2). The composite blade (5) includes a blade body (5-1), a sliding plate (5-2), a spring (5-3), and a stop (5-4). A T-shaped groove is longitudinally arranged on the blade body (5-1). One end of the T-shaped groove is closed, and the other end is open. A stop (5-4) is arranged at the opening. The sliding plate (5-2) and the spring (5-3) are arranged inside the T-shaped groove. A spring is arranged at one end of the sliding plate (5-2), and the other ends of the two springs are the closed end of the T-shaped groove and the stop (5-4), respectively.

2. The self-adjusting ternary energy-dissipating viscous damper according to claim 1, characterized in that, The viscous damping liquid sealed box (2) is a closed box containing viscous damping liquid.

3. The self-adjusting ternary energy-dissipating viscous damper according to claim 1, characterized in that, The bottom of the T-shaped groove on the blade body (5-1) is provided with multiple through holes.

4. The self-adjusting ternary energy-dissipating viscous damper according to claim 1, characterized in that, The side of the stop block (5-4) is T-shaped and matches the T-shaped groove. The stop block (5-4) is fixed to the blade body (5-1) by bolts (5-5).

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