阅读说明：本技术 一种新型变阻尼系数黏滞流体阻尼器 (Novel variable damping coefficient viscous fluid damper ) 是由 高峰 王磊 朱胜利 于 2020-03-12 设计创作，主要内容包括：本发明提出了一种新型变阻尼系数黏滞流体阻尼器,包括主缸筒以及沿主缸筒轴向方向往复运动的导杆,所述主缸筒腔内中间位置设置有与导杆固定连接的活塞,所述主缸筒内侧两端均设置有导向套,导杆在导向套内活动；所述主缸筒内填充有甲基硅油；所述导杆两侧活塞上均设置有带槽阻尼棒,带槽阻尼棒开设有面向活塞孔的矩形凹槽；本发明会根据实际的需要来配置合适大小的阻尼参数值,而不会出现传统黏滞阻尼器阻尼力过大或是过小的现象,避免了阻尼器提前失效,提高了阻尼器的寿命,能够提高阻尼器的阻尼力,增加耗能能力,阻尼力设计精度高,能够实现高度可靠的抗震设计的。(The invention provides a novel variable damping coefficient viscous fluid damper, which comprises a main cylinder barrel and a guide rod reciprocating along the axial direction of the main cylinder barrel, wherein a piston fixedly connected with the guide rod is arranged at the middle position in a cavity of the main cylinder barrel, guide sleeves are arranged at two ends of the inner side of the main cylinder barrel, and the guide rod moves in the guide sleeves; methyl silicone oil is filled in the main cylinder; the pistons on the two sides of the guide rod are provided with damping rods with grooves, and the damping rods with the grooves are provided with rectangular grooves facing the piston holes; according to the invention, the damping parameter values with proper sizes can be configured according to actual requirements, the phenomenon that the damping force of the traditional viscous damper is too large or too small can not occur, the early failure of the damper is avoided, the service life of the damper is prolonged, the damping force of the damper can be improved, the energy consumption capability is increased, the damping force design precision is high, and the highly reliable anti-seismic design can be realized.)

1. A novel variable damping coefficient viscous fluid damper comprises a main cylinder barrel (3) and a guide rod (2) which reciprocates along the axial direction of the main cylinder barrel (3), and is characterized in that a piston (4) which is sleeved with the guide rod (2) is arranged in the middle of the inner cavity of the main cylinder barrel (3), guide sleeves (1) are arranged at two ends of the inner side of the main cylinder barrel (3), and the guide rod (2) moves in the guide sleeves (1); the main cylinder barrel (3) is filled with a damping medium (6); the piston (4) is provided with a through hole, a damping rod (5) is arranged in the through hole, two ends of the damping rod (5) are fixed on the guide sleeve (1), and a groove is formed in the whole body of the damping rod.

2. The novel variable damping coefficient viscous fluid damper as claimed in claim 1, wherein the damping rod inner hole shape (5) is dumbbell-shaped, and the depth of the middle groove is greater than the depth of the grooves at both ends.

3. The novel variable damping coefficient viscous fluid damper as claimed in claim 2, characterized in that the piston (4) is provided with a plurality of through holes, and the number of the through holes is consistent with that of the damping rods (5); the diameter of the through hole is slightly larger than the diameter of the two end parts of the damping rod (5).

4. The novel variable damping coefficient viscous fluid damper as claimed in claim 1, characterized in that a shaft seal (8) is mounted on the inner ring of the guide sleeve (1), and the shaft seal (8) is used for sealing connection between the guide sleeve (1) and the guide rod (2); an O-shaped ring (7) is arranged between the guide sleeve (1) and the main cylinder barrel (3).

Technical Field

The invention relates to the technical field of structural shock absorption, in particular to a novel variable damping coefficient viscous fluid damper.

Background

In recent years, viscous fluid dampers have been more and more widely used in engineering damping design due to the advantages of good damping effect, simple structure, long service life, and the like. However, the damping parameters of the conventional viscous damper are basically constant, and in many special projects, when the damper encounters strong wind or strong earthquake, the stroke of the damper is relatively large, and the conventional viscous damper has too large or too small damping force, so that the damper fails in advance or cannot perform the shock absorption function.

Therefore, it is necessary to develop a viscous damper with controllable and variable damping coefficient, that is, the corresponding damper parameter value is set according to the working requirement to meet the requirements of different stages. The invention discloses a method for controlling damping at the present stage, which is mainly an active damping-variable system or an intelligent control system, can achieve the purpose of variable damping, but has extremely complex structure, needs auxiliary voltage control, has higher cost and is not easy to popularize.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a novel variable damping coefficient viscous fluid damper which can preset different damping parameter values at different stages without an additional electric control device, has a simple structure and lower cost, and is easy to popularize.

In order to solve the technical problems, the invention adopts the technical scheme that: a novel variable damping coefficient viscous fluid damper comprises a main cylinder barrel and a guide rod reciprocating along the axial direction of the main cylinder barrel, wherein a piston sleeved with the guide rod is arranged at the middle position in a cavity of the main cylinder barrel, guide sleeves are arranged at two ends of the inner side of the main cylinder barrel, and the guide rod moves in the guide sleeves; damping media are filled in the main cylinder barrel; the piston is provided with a through hole, a damping rod is arranged in the through hole, two ends of the damping rod are fixed on the guide sleeve, and the whole body of the damping rod is provided with a groove.

Furthermore, the inner hole of the damping rod is dumbbell-shaped, and the depth of the groove in the middle is greater than that of the grooves in the two ends.

Furthermore, a plurality of through holes are formed in the piston, and the number of the through holes is consistent with that of the damping rods; the diameter of the through hole is slightly larger than the diameter of the two end parts of the damping rod.

Further, a shaft seal is arranged on an inner ring of the guide sleeve, and the guide sleeve and the guide rod are connected in a sealing manner through the shaft seal; an O-shaped ring is arranged between the guide sleeve and the main cylinder barrel.

Compared with the prior art, the invention has the beneficial effects that:

1) the novel variable damping coefficient viscous fluid damper developed by the invention does not need additional voltage or a special electric control device for control, and has the advantages of simple structure, lower cost and easy popularization.

2) In the working process, the damping parameter value with the proper size can be configured according to the actual requirement, the phenomenon that the damping force of the traditional viscous damper is too large or too small can not occur, the early failure of the damper is avoided, and the service life of the damper is prolonged.

3) The damping force of the damper can be improved, the energy consumption capacity is increased, and the damper has the advantages of high damping force design precision and capability of realizing highly reliable anti-seismic design.

Drawings

The disclosure of the present invention is illustrated with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the invention. In the drawings, like reference numerals are used to refer to like parts, wherein:

fig. 1 is a schematic cross-sectional view of a novel variable damping coefficient viscous fluid damper according to an embodiment of the present invention.

Reference numbers in the figures: 1-guide sleeve, 2-guide rod, 3-main cylinder barrel, 4-piston, 5-damping rod, 6-damping medium, 7-O-shaped ring and 8-shaft oil seal

Detailed Description

It is easily understood that according to the technical solution of the present invention, a person skilled in the art can propose various alternative structures and implementation ways without changing the spirit of the present invention. Therefore, the following detailed description and the accompanying drawings are merely illustrative of the technical aspects of the present invention, and should not be construed as all of the present invention or as limitations or limitations on the technical aspects of the present invention.

According to one embodiment of the invention, shown in fig. 1, a novel variable damping coefficient viscous fluid damper comprises a main cylinder 3 and a guide rod 2 reciprocating along the axial direction of the main cylinder 3, wherein a piston 4 sleeved with the guide rod 2 is arranged at the middle position in a cavity of the main cylinder 3, and the piston 4 is fixedly connected with the guide rod 2 and is positioned at the middle position of the guide rod 2; the two ends of the inner side of the main cylinder barrel 3 are respectively provided with a guide sleeve 1, so that the guide rod 2 can move in the guide sleeves 1; the main cylinder barrel 3 is filled with a damping medium 6, and the damping medium 6 is preferably methyl silicone oil; the piston 4 is provided with a through hole, a damping rod 5 is arranged in the through hole, the two ends of the damping rod 5 are fixed on the guide sleeve 1, the whole body of the damping rod is provided with a groove, the damping rod 5 can provide damping forces with different sizes by changing the depth of the rectangular groove, the anti-seismic and shock-absorbing effects are achieved, the energy consumption capacity is increased, the damping force design accuracy is high, and the anti-seismic and shock-absorbing effects can be greatly improved by the aid of the damping rods.

The inner hole of the damping rod 5 is dumbbell-shaped, and the structure is favorable for the flow of the methyl silicone oil 6; the middle part of the damping rod is provided with a groove deeper than the two end parts, and the consumption of the kinetic energy of the methyl silicone oil in the anti-seismic and damping process is facilitated by setting the height difference; through the symmetry set up many damping rods, antidetonation shock attenuation efficiency is higher.

The inner circle of uide bushing 1 is installed axle and is used sealed 8, axle is with sealed 8 messenger uide bushing 1 and guide arm 2 between sealing connection, be provided with O type circle 7 between uide bushing 1 and the main cylinder section of thick bamboo 3, O type circle 7 makes and keeps sealed state between uide bushing 1 and the main cylinder section of thick bamboo 3, through setting up axle and using sealed 8 and O type circle 7, be favorable to guaranteeing damping medium 6 in the main cylinder section of thick bamboo 3 cavity, prevent to take place because damping medium 6 leaks and the whole device shock attenuation effect that leads to reduces or can not play the shock attenuation effect of combatting earthquake.

During actual use, the damping rods 5 with the grooves in proper sizes are installed in the novel variable damping coefficient viscous fluid damper aiming at different buildings, so that different anti-seismic effects are achieved. When an earthquake occurs, the guide rod 2 moves under the action of earthquake acting force, so that the piston 4 is driven to move along the axial direction, the driven methyl silicone oil impacts the undriven methyl silicone oil through the grooves in the movement process due to the existence of the grooves of the damping rod 5, the momentum of the driven methyl silicone oil is reduced in the impact process, the undriven methyl silicone oil obtains momentum and moves, and the sum of the momentum of the driven methyl silicone oil and the undriven methyl silicone oil keeps unchanged. When the kinetic energy is reduced, the kinetic energy is lost due to collision between the methyl silicone oil which moves fast and the driven methyl silicone oil which moves slowly, the lost kinetic energy is converted into heat, and the anti-seismic and shock-absorbing effects are achieved. The damping parameter value with the proper size is configured according to the actual requirement, the phenomenon that the damping force of the traditional viscous damper is too large or too small can not occur, the early failure of the damper is avoided, and the service life of the damper is prolonged.

The technical scope of the present invention is not limited to the above description, and those skilled in the art can make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present invention, and such changes and modifications should fall within the protective scope of the present invention.