An adaptive viscous damper

Abstract

The utility model discloses a kind of self-adaptive viscous dampers, comprising: cylinder, the inside of the cylinder is equipped with interlayer cavity, the bottom end of the interlayer cavity and cylinder is symmetrically equipped with through-hole, and the top outer wall of the cylinder is sealingly connected end cover;Piston assembly, including piston with cylinder inner wall sliding connection, the inner wall of the piston is equipped with T-shaped hole, the T-shaped hole is distributed around piston circumferentially, the inner wall of the T-shaped hole is fixedly installed self-adaptive throttling assembly, the self-adaptive throttling assembly includes threaded sleeve, the inner wall of the threaded sleeve is connected by spring with plug sleeve, related to damper field, by adopting pure mechanical self-adaptive throttling structure, without electronic component, can automatically adjust damping coefficient according to vibration load, adapt to different vibration working conditions, and shock-absorbing effect is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of damper technology, specifically an adaptive viscous damper. Background Technology

[0002] Viscous dampers rely on the viscous resistance of the viscous damping medium to dissipate vibration energy and are widely used in vibration reduction and protection in fields such as construction, bridges, and machinery. Most existing viscous dampers are designed with a fixed damping coefficient, which cannot adaptively adjust the damping performance according to the magnitude of the external excitation: when the external excitation is small, the fixed damping coefficient is insufficient to fully exert the vibration reduction effect, resulting in a large vibration amplitude; when the external excitation is large, excessive damping force can easily generate additional stress on the structure, causing secondary damage.

[0003] Existing adjustable dampers often have complex structures, relying on multiple sets of transmission components for adjustment. This not only makes assembly difficult and costly but also results in adjustment lag, making it difficult to quickly adapt to dynamically changing vibration conditions. Furthermore, the sealing structure design of traditional dampers is often flawed, leading to leakage of the damping medium during long-term reciprocating motion. This causes damping performance degradation, affecting vibration reduction and service life. Utility Model Content

[0004] The purpose of this invention is to provide an adaptive viscous damper to solve the problems mentioned in the background art, such as the complex structure of some existing adjustable dampers, which rely on multiple sets of transmission components for adjustment, resulting in high assembly difficulty and cost, as well as adjustment lag and difficulty in quickly adapting to dynamically changing vibration conditions.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An adaptive viscous damper, comprising: A cylindrical body, wherein the interior of the cylindrical body is provided with a double-layered cavity, and the double-layered cavity and the bottom end of the cylindrical body are symmetrically provided with through holes, and the top outer wall of the cylindrical body is sealed with a connecting end cap; A piston assembly includes a piston that is slidably connected to the inner wall of a cylinder. The inner wall of the piston has a T-shaped hole distributed around the circumference of the piston. An adaptive throttling component is fixedly installed on the inner wall of the T-shaped hole. The adaptive throttling component includes a threaded sleeve, and the inner wall of the threaded sleeve is connected to a plug sleeve by a spring.

[0006] In a preferred embodiment of this utility model, the T-shaped holes are provided in eight groups, and the eight groups of T-shaped holes are staggered vertically. The inner wall of the threaded sleeve is provided with an annular groove. The bottom inner wall of the threaded sleeve is threadedly connected to an end nut. The bottom inner wall of the end nut is provided with a hexagonal hole, and the inner wall of the hexagonal hole is provided with a drainage hole.

[0007] In a preferred embodiment of this utility model, the drain hole penetrates the inner wall of the end nut, the top of the plug sleeve and the bottom of the annular groove are elastically contacted by a spring, and through grooves are provided on both sides of the inner wall of the plug sleeve.

[0008] In a preferred embodiment of this utility model, the threaded sleeve is installed inside the T-shaped hole, and a positioning nut is threadedly connected to the top inner wall of the T-shaped hole. The middle part of the positioning nut is a hollow structure.

[0009] In a preferred embodiment of this utility model, the adaptive throttling component is staggered vertically for bidirectional flow of viscous damping medium. The viscous damping medium, under pressure, enters the interlayer cavity through the through hole to control the piston's vertical movement.

[0010] In a preferred embodiment of this utility model, a sealing groove is provided on the top outer wall of the cylinder, the bottom inner wall of the end cap is threadedly connected to the inner wall of the cylinder, and a sealing ring is fixedly installed on the bottom outer wall of the end cap, and the sealing ring and the sealing groove are sealed together.

[0011] In a preferred embodiment of this utility model, a telescopic slide rod is fixedly connected to the top outer wall of the piston, a slide rod hole is provided on the inner wall of the end cap, a U-shaped sealing ring is fixedly installed on the inner wall of the slide rod hole, and the outer wall of the telescopic slide rod is slidably and sealingly connected to the inner wall of the U-shaped sealing ring.

[0012] In a preferred embodiment of this utility model, a limiting plate is fixedly installed on the top of the telescopic slide rod, a buffer spring is sleeved on the outer wall of the telescopic slide rod, the buffer spring is located between the limiting plate and the end cap, a first docking ring is fixedly connected to the top outer wall of the limiting plate, and a second docking ring is fixedly connected to the bottom outer wall of the cylinder.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

[0014] 1. It adopts a purely mechanical adaptive throttling structure, which requires no electronic components and can automatically adjust the damping coefficient according to the vibration load, adapting to different vibration conditions, and the vibration reduction effect is stable and reliable; 2. The sealing structure is reasonably designed, easy to install and highly stable, effectively preventing leakage of damping medium, extending service life, and adapting to a variety of complex application scenarios. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the main structure in an adaptive viscous damper. Figure 2 This is a schematic diagram of the decomposed structure in an adaptive viscous damper. Figure 3 This is a schematic diagram of the cylindrical structure in an adaptive viscous damper; Figure 4 This is a schematic diagram of the piston structure in an adaptive viscous damper; Figure 5 This is a schematic diagram of the adaptive throttling component in an adaptive viscous damper; Figure 6 This is a schematic diagram of the sealing cover structure in an adaptive viscous damper.

[0016] In the figure: cylinder 100, through hole 110, second docking ring 120, sealing groove 130, end cap 140, slide rod hole 141, U-shaped sealing ring 142, sealing ring 143, piston 200, T-shaped hole 210, threaded sleeve 220, annular groove 221, plug sleeve 222, through groove 223, spring 224, end nut 225, hexagonal hole 226, positioning nut 227, telescopic slide rod 230, limiting plate 240, buffer spring 250, first docking ring 260. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] Example 1: As Figures 1-6 ,include: The cylinder 100 has an internal interlayer cavity, and the interlayer cavity and the bottom end of the cylinder 100 are symmetrically provided with through holes 110. The top outer wall of the cylinder 100 is sealed with an end cap 140. The piston assembly includes a piston 200 that is slidably connected to the inner wall of the cylinder 100. The inner wall of the piston 200 has a T-shaped hole 210 that is distributed around the piston 200 in a circumferential manner. An adaptive throttling assembly is fixedly installed on the inner wall of the T-shaped hole 210. The adaptive throttling assembly includes a threaded sleeve 220. The inner wall of the threaded sleeve 220 is connected to a plug sleeve 222 by a spring 224.

[0019] The specific application scenario of this embodiment is as follows: The interlayer cavity inside the cylinder 100 and the through hole 110 at the bottom form a damping medium flow channel. The end cap 140 seals the top of the cylinder 100, ensuring the airtightness of the damping cavity. During use, external vibration drives the piston 200 to slide on the inner wall of the cylinder 100. During the movement of the piston 200, the viscous damping medium enters the interlayer cavity through the through hole 110 under pressure, and then flows through the T-shaped hole 210 on the piston 200. When the pressure of the viscous damping medium is small, the spring 224 is in a natural extension and contraction state, the position of the plug sleeve 222 is stable, the flow cross-sectional area of ​​the viscous damping medium in the T-shaped hole 210 is large, and the damping coefficient is small. When the external vibration increases and the pressure of the viscous damping medium increases, the viscous damping medium pushes the plug sleeve 222 to compress the spring 224. The plug sleeve 222 slides relative to the threaded sleeve 220, reducing the flow cross-sectional area of ​​the viscous damping medium in the T-shaped hole 210, increasing the damping coefficient, and realizing the adaptive adjustment of the damping performance.

[0020] Example 2: Figures 1-4 Eight sets of T-shaped holes 210 are provided, and the eight sets of T-shaped holes 210 are staggered vertically. The inner wall of the threaded sleeve 220 is provided with an annular groove 221. The bottom inner wall of the threaded sleeve 220 is threadedly connected to the end nut 225. The bottom inner wall of the end nut 225 is provided with a hexagonal hole 226. The inner wall of the hexagonal hole 226 is provided with a drain hole, which penetrates the inner wall of the end nut 225. The top of the plug sleeve 222 and the bottom of the annular groove 221 are elastically abutted by a spring 224. The inner walls on both sides of the plug sleeve 222 are provided with through grooves 223. The threaded sleeve 220 is inserted and installed inside the T-shaped hole 210. The top inner wall of the T-shaped hole 210 is threadedly connected to the positioning nut 227. The middle part of the positioning nut 227 is hollow, which is adapted to the staggered vertical setting of the throttling component. It is used for bidirectional flow of viscous damping medium. The viscous damping medium is pressurized and enters the interlayer cavity through the through hole 110 to control the piston 200 to move up and down.

[0021] The specific application scenario of this embodiment is as follows: Eight sets of staggered T-shaped holes 210, together with an adaptive throttling component, enable bidirectional smooth flow of viscous damping medium. The threaded sleeve 220 is fixed in the T-shaped hole 210 by the positioning nut 227 to ensure installation stability. The end nut 225 is easily disassembled and assembled through the hexagonal hole 226, facilitating the assembly and maintenance of the spring 224 and the plug sleeve 222. When the viscous damping medium flows, it first enters the threaded sleeve 220 through the drain hole of the end nut 225, and then flows out through the through grooves 223 on both sides of the plug sleeve 222. When the pressure of the viscous damping medium changes, the plug sleeve 222 slides along the inner wall of the threaded sleeve 220, compressing or stretching the spring 224. The overlapping area of ​​the through groove 223 and the annular groove 221 changes accordingly, thereby adjusting the flow cross-sectional area of ​​the viscous damping medium. The staggered structural design enables stable damping adjustment when the piston 200 moves up and down, ensuring consistent bidirectional damping effect.

[0022] Example 3: Figure 1 , Figure 2 and Figure 5 , Figure 6 A sealing groove 130 is provided on the top outer wall of the cylinder 100. The bottom inner wall of the end cap 140 is threaded to the inner wall of the cylinder 100. A sealing ring 143 is fixedly installed on the bottom outer wall of the end cap 140. The sealing ring 143 and the sealing groove 130 are sealed together. A telescopic slide rod 230 is fixedly connected to the top outer wall of the piston 200. A slide rod hole 141 is provided on the inner wall of the end cap 140. A U-shaped sealing ring 142 is fixedly installed on the inner wall of the slide rod hole 141. The outer wall of the telescopic slide rod 230 is slidably sealed to the inner wall of the U-shaped sealing ring 142. A limiting plate 240 is fixedly installed on the top of the telescopic slide rod 230. A buffer spring 250 is sleeved on the outer wall of the telescopic slide rod 230. The buffer spring 250 is located between the limiting plate 240 and the end cap 140. A first docking ring 260 is fixedly connected to the top outer wall of the limiting plate 240. A second docking ring 120 is fixedly connected to the bottom outer wall of the cylinder 100.

[0023] The specific application scenario of this embodiment is as follows: the end cap 140 is threadedly connected to the cylinder 100, and the sealing ring 143 is embedded in the sealing groove 130 to achieve a reliable seal on the top of the cylinder 100 and prevent leakage of viscous damping medium; the telescopic slide rod 230 is engaged with the slide rod hole 141 of the end cap 140, and the U-shaped sealing ring 142 ensures the sealing performance during the sliding process of the two; external vibration is transmitted to the device through the first docking ring 260 or the second docking ring 120, driving the telescopic slide rod 230 and the piston 200 to reciprocate; the buffer spring 250 is located between the limiting plate 240 and the end cap 140, which can help buffer the vibration impact force, while limiting the maximum stroke of the telescopic slide rod 230 to avoid excessive stretching or compression; the limiting plate 240 prevents the buffer spring 250 from falling off, ensuring the stable performance of the elastic buffering effect.

[0024] The working principle of this utility model is as follows: When used by those skilled in the art, the device is connected to the external structure through the first docking ring 260 and the second docking ring 120 to realize the transmission of vibration load. The cylinder 100 and the end cap 140 form a sealed space through the sealing ring 143 and the sealing groove 130, which is filled with viscous damping agent. The piston 200 slides with the inner wall of the cylinder 100, and the telescopic slide rod 230 drives the piston 200 to reciprocate with the external vibration. During the movement, the viscous damping agent enters the interlayer cavity through the through hole 110, and then achieves bidirectional flow through the T-shaped hole 210 on the piston 200. The plug sleeve 222 of the adaptive throttling component slides automatically under the action of the damping agent pressure and the elastic force of the spring 224, adjusting the damping agent flow cross-sectional area, thereby changing the damping coefficient: when the external excitation is large, the damping coefficient increases, quickly suppressing vibration; when the external excitation is small, the damping coefficient decreases, fully absorbing vibration energy. At the same time, the buffer spring 250 assists in buffering vibration, and the U-shaped sealing ring 142 and the sealing ring 143 ensure sealing performance and ensure long-term stable operation of the device.

[0025] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adaptive viscous damper, characterized in that, include: The cylinder (100) has an internal interlayer cavity, and the interlayer cavity is symmetrically provided with through holes (110) at the bottom end of the cylinder (100). The top outer wall of the cylinder (100) is sealed with an end cap (140). The piston assembly includes a piston (200) that is slidably connected to the inner wall of the cylinder (100). The inner wall of the piston (200) is provided with a T-shaped hole (210). The T-shaped hole (210) is distributed circumferentially around the piston (200). An adaptive throttling component is fixedly installed on the inner wall of the T-shaped hole (210). The adaptive throttling component includes a threaded sleeve (220). The inner wall of the threaded sleeve (220) is connected to a plug sleeve (222) by a spring (224).

2. The adaptive viscous damper according to claim 1, characterized in that, The T-shaped holes (210) are provided in eight groups, and the eight groups of T-shaped holes (210) are staggered vertically. The inner wall of the threaded sleeve (220) is provided with an annular groove (221). The bottom inner wall of the threaded sleeve (220) is threadedly connected to the end nut (225). The bottom inner wall of the end nut (225) is provided with a hexagonal hole (226). The inner wall of the hexagonal hole (226) is provided with a drainage hole.

3. An adaptive viscous damper according to claim 2, characterized in that, The drain hole penetrates the inner wall of the end nut (225), and the top of the plug sleeve (222) and the bottom of the annular groove (221) are elastically contacted by a spring (224). The inner walls on both sides of the plug sleeve (222) are provided with through grooves (223).

4. An adaptive viscous damper according to claim 3, characterized in that, The threaded sleeve (220) is inserted into the inside of the T-shaped hole (210), and the top inner wall of the T-shaped hole (210) is threaded with a positioning nut (227), and the middle part of the positioning nut (227) is hollow.

5. An adaptive viscous damper according to claim 4, characterized in that, The adaptive throttling component is staggered vertically for bidirectional flow of viscous damping medium. The viscous damping medium is pressurized and enters the interlayer cavity through the through hole (110) to control the piston (200) to move up and down.

6. An adaptive viscous damper according to claim 1, characterized in that, The top outer wall of the cylinder (100) is provided with a sealing groove (130), the bottom inner wall of the end cap (140) is threadedly connected to the inner wall of the cylinder (100), and a sealing ring (143) is fixedly installed on the bottom outer wall of the end cap (140). The sealing ring (143) and the sealing groove (130) are sealed together.

7. An adaptive viscous damper according to claim 6, characterized in that, The top outer wall of the piston (200) is fixedly connected to the telescopic slide rod (230), and the inner wall of the end cap (140) is provided with a slide rod hole (141). A U-shaped sealing ring (142) is fixedly installed on the inner wall of the slide rod hole (141), and the outer wall of the telescopic slide rod (230) is slidably sealed to the inner wall of the U-shaped sealing ring (142).

8. An adaptive viscous damper according to claim 7, characterized in that, A limiting plate (240) is fixedly installed on the top of the telescopic slide rod (230). A buffer spring (250) is sleeved on the outer wall of the telescopic slide rod (230). The buffer spring (250) is located between the limiting plate (240) and the end cap (140). A first docking ring (260) is fixedly connected to the top outer wall of the limiting plate (240). A second docking ring (120) is fixedly connected to the bottom outer wall of the cylinder (100).

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