WO2020037529A1 - 一种钢管内置空间链球式碰撞阻尼器 - Google Patents

一种钢管内置空间链球式碰撞阻尼器 Download PDF

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Publication number
WO2020037529A1
WO2020037529A1 PCT/CN2018/101653 CN2018101653W WO2020037529A1 WO 2020037529 A1 WO2020037529 A1 WO 2020037529A1 CN 2018101653 W CN2018101653 W CN 2018101653W WO 2020037529 A1 WO2020037529 A1 WO 2020037529A1
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Prior art keywords
damper
steel pipe
vibration
built
spherical mass
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English (en)
French (fr)
Inventor
范书立
宋钢兵
霍林生
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Dalian University of Technology
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Dalian University of Technology
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Priority to US16/765,578 priority Critical patent/US20200309225A1/en
Priority to PCT/CN2018/101653 priority patent/WO2020037529A1/zh
Publication of WO2020037529A1 publication Critical patent/WO2020037529A1/zh
Anticipated expiration legal-status Critical
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/104—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted
    • F16F7/116—Vibration-dampers; Shock-absorbers using inertia effect the inertia member being resiliently mounted on metal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids

Definitions

  • the invention belongs to the technical field of civil engineering vibration control, and relates to a steel ball built-in space chain ball impact damper.
  • damping to absorb energy to reduce vibration was originally applied in aerospace, military, guns, automobiles and other industries. Since the 1970s, foreign countries have gradually transferred these technologies to construction, bridge, and railway projects, and their development has been very rapid. By the end of the 20th century, more than 100 structural projects around the world had used dampers to absorb energy to reduce vibration.
  • the use of dampers to reduce vibration is a passive control system, which reduces the structural response by increasing structural damping and dissipating vibration energy. Because of its simple device, economical materials, and good damping effect, it has a wide range of applications in practical structural control. There are many types of dampers, which are classified into displacement-related and speed-dependent types by China's current resistance regulations.
  • the energy consumption of a displacement-dependent damper is related to its own deformation and relative sliding displacement.
  • Metal dampers and friction dampers are commonly used.
  • the damping characteristics of speed-dependent dampers are related to the loading frequency. Viscous dampers and viscoelastic dampers are commonly used.
  • the present invention is based on my application for a patent "a space damper that combines multiple energy consumption methods", changes the original cuboid shell with a spherical inner cavity into a thin annular shell, and reduces the elastic rod and the connecting spring.
  • the damper in the plane of the ring shell is connected with a plurality of dampers by a threaded elastic connecting rod in a direction perpendicular to the plane of the ring shell.
  • the damper is placed in a circular steel pipe, and the spring vibrator and the viscoelastic material and Collision of the tube wall absorbs vibration. It not only has various energy consumption methods of the original damper, but also can simply act on the steel pipe structure to improve the vibration reduction and installation efficiency.
  • the object of the present invention is to provide a space chain ball damper installed inside a circular steel pipe.
  • the advantage of the damper is that it is easy to install, has high vibration reduction efficiency, and does not produce large noise during the vibration reduction process. , To improve the disadvantages of the original damper installed outside the structure occupying space, and low vibration reduction efficiency.
  • a chain ball type space damper placed in a circular steel pipe includes a spherical mass oscillator 1, an annular shell 2, a spring 3, a rigid rod 4, a viscoelastic energy absorbing cap 5, and a connecting rod member 6;
  • the annular sheet shell 2 is surrounded on the outside, and fits into the inner wall of the steel pipe after being placed in a circular steel pipe.
  • the spherical mass oscillator 1 is connected to the annular sheet shell 2 through a spring 3 thereon;
  • the rigid rods 4 are fixed on the spherical mass oscillator 1, all of which are perpendicular to the spherical surface and are confined in the plane of the housing 2 to ensure that there is a certain distance between the viscoelastic energy-absorbing cap 5 of the port of the rigid rod 4 and the annular sheet casing 2. The distance is adjusted by the length of the rigid rod 4.
  • the above components form a single damper, and a plurality of dampers are connected by a bolted rod member 6 and placed in a circular steel pipe to form a chain ball space damper.
  • the vibration component perpendicular to the steel pipe will cause the spring 3 to drive the spherical mass oscillator 1 to vibrate, and the viscoelastic energy absorption cap 5 on the top of the rigid rod 4 and the annular sheet shell 2 collide.
  • the material absorbs vibration energy; the vibration component parallel to the steel pipe is consumed by another damper in the steel pipe that is perpendicular to this component, but the friction between the ring-shaped thin-film shell 2 of the damper and the steel pipe can also consume a small amount of energy.
  • the mass of the spherical mass vibrator 1 is determined according to the frequency of the steel pipe structure at the place where it is placed and the vibration frequency of the load.
  • the stiffness of the spring 3 is determined according to the frequency of the steel pipe structure at the place where it is placed, the vibration frequency of the load, and the requirements for vibration reduction in different directions.
  • the length of the rigid rod 4 is determined according to the requirements for vibration damping in different directions of the steel pipe structure at the place of installation.
  • the length of the link rod 6 is determined according to the damping efficiency attenuation range of a single damper.
  • the spherical mass vibrator 1 connected to the outer annular sheet shell 2 through the spring 3 also vibrates, and forms a tuned mass damper with the spring 3 to offset part of the steel pipe structure caused by external excitation. Vibration response.
  • the vibration of the spherical mass vibrator 1 will cause the viscoelastic energy absorption cap 5 at the top of the rigid rod 4 to collide with the annular sheet shell 2, and consume a part of the vibration energy through the collision, and the viscoelastic energy absorption cap 5 absorbs a part of the vibration energy.
  • the spherical mass oscillator 1 is connected to the inner wall of the annular shell of the outer annular sheet shell 2 through springs 3 in multiple directions.
  • Rigid rods 4 are arranged in multiple directions of the spherical mass oscillator 1, so the spherical mass oscillator 1 is in the plane of the annular shell. It can vibrate in multiple directions, and both the rigid rod 4 and the annular sheet shell 2 can collide.
  • the damper of the present invention can be easily installed in a circular steel pipe, saving space and installation costs. It inherits the characteristics of combining multiple energy consumption modes of the original damper, and achieves good energy consumption and vibration reduction. effect. By adjusting the stiffness of the spring in all directions, the length of the rigid rod and the length of the connecting rod, different shock absorption effects of different sizes and lengths of steel tube structures can be achieved.
  • FIG. 1 is an overall schematic diagram of the structure of the present invention.
  • Fig. 2 is a schematic diagram showing the details of the structure of the present invention.
  • a chain ball type space damper built in a circular steel pipe includes a spherical mass oscillator 1, an annular shell 2, a spring 3, a rigid rod 4, a viscoelastic energy-absorbing cap 5, and a connecting rod member 6;
  • the annular sheet shell 2 is surrounded on the outside, and fits into the inner wall of the steel pipe after being placed in a circular steel pipe.
  • the spherical mass oscillator 1 is connected to the shell through a spring 3 thereon; multiple rigid rods 4 is fixed on the spherical mass oscillator 1, all perpendicular to the spherical surface, and is confined in the plane where the annular sheet shell 2 is located, to ensure that there is a certain distance between the viscoelastic energy absorption cap 5 of the rigid rod end and the annular sheet shell 2, and the distance passes
  • the length of the rigid rod 4 is adjusted, the above components form a single damper, and a plurality of dampers are connected by a rod member 6 with bolts and placed in a circular steel pipe to form a chain ball type space damper.
  • the vibration component perpendicular to the steel pipe will cause the spring 3 to drive the spherical mass oscillator 1 to vibrate, and the viscoelastic energy absorption cap 5 on the top of the rigid rod 4 and the annular sheet shell 2 collide.
  • the material absorbs vibration energy; the vibration component parallel to the steel pipe is consumed by another damper in the steel pipe that is perpendicular to this component, but the friction between the ring-shaped thin-film shell 2 of the damper and the steel pipe can also consume a small amount of energy.
  • the mass of the spherical mass vibrator 1 is determined according to the frequency of the steel pipe structure at the place where it is placed and the vibration frequency of the load.
  • the stiffness of the spring 3 is determined according to the frequency of the steel pipe structure at the place where it is placed, the vibration frequency of the load, and the requirements for vibration reduction in different directions.
  • the length of the rigid rod 4 is determined according to the requirements for vibration damping in different directions of the steel pipe structure at the place of installation.
  • the length of the link rod 6 is determined according to the damping efficiency attenuation range of a single damper.
  • the spherical mass vibrator 1 connected to the outer annular sheet shell 2 through the spring 3 also vibrates, and forms a tuned mass damper with the spring 3 to offset part of the steel pipe structure caused by external excitation. Vibration response.
  • the vibration of the spherical mass vibrator 1 will cause the viscoelastic energy absorption cap 5 at the top of the rigid rod 4 to collide with the annular sheet shell 2, and consume a part of the vibration energy through the collision, and the viscoelastic energy absorption cap 5 absorbs a part of the vibration energy.
  • the spherical mass oscillator 1 is connected to the inner wall of the annular shell of the outer annular sheet shell 2 through springs 3 in multiple directions.
  • Rigid rods 4 are arranged in multiple directions of the spherical mass oscillator 1, so the spherical mass oscillator 1 is in the plane of the annular shell. It can vibrate in multiple directions, and both the rigid rod 4 and the annular sheet shell 2 can collide.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Vibration Prevention Devices (AREA)

Abstract

一种钢管内置空间链球式碰撞阻尼器，属于土木工程振动控制技术领域。该阻尼器装置由环形薄片外壳(2)和其中央的球形质量振子(1)通过其上的弹簧(3)实现连接，多个刚性杆(4)固定在球形质量振子(1)上；环形外壳(2)、球形质量振子(1)、弹簧(3)形成了调谐质量阻尼器，抵消部分外部激励引起的钢管结构振动响应。同时刚性杆(4)顶端的粘弹性吸能帽(5)与外壳(2)产生碰撞，通过碰撞消耗一部分振动能量，粘弹性吸能帽(5)吸收一部分振动能量。环形平面内有多个弹簧(3)能在多个方向上起到减振作用，通过连接杆件(6)把单个的阻尼器连接成空间链球式阻尼器放置于圆形钢管内，能够提高减振效率，减少安装所占的空间和安装费用。

Description

一种钢管内置空间链球式碰撞阻尼器 技术领域
本发明属于土木工程振动控制技术领域，涉及一种钢管内置空间链球式碰撞阻尼器。
 背景技术
利用阻尼来吸能减振，最初应用于航天航空，军工，枪炮，汽车等行业中。从20世纪70年代后，国外开始逐步地把这些技术转用到建筑、桥梁、铁路等工程中，其发展十分迅速。到20世纪末，全世界已有近100多个结构工程运用了阻尼器来吸能减振。采用阻尼器减振是一种被动控制系统，是通过增加结构阻尼、耗散振动能量来减小结构响应。由于其装置简单、材料经济、减振效果好等特点，在实际结构控制中具有广泛的应用前景。阻尼器种类繁多，我国现行抗规将其分为位移相关型和速度相关型。位移相关型阻尼器的耗能与其自身变形和相对滑动位移有关，常用的有金属阻尼器和摩擦阻尼器。速度相关型阻尼器的阻尼特性与加载频率有关，常用的有粘滞阻尼器和粘弹性阻尼器。
本发明是在本人已申请专利《一种多耗能方式相结合的空间阻尼器》的基础上，把原来球形内空腔的正方体外壳改成薄环形外壳，并且把弹性杆和连接弹簧减限定在环形外壳所在平面内的阻尼器，在与环形外壳平面垂直的方向上用带螺纹的弹性连接杆件连接多个阻尼器，最后放入到圆形钢管中，通过弹簧振子以及粘弹性材料和管壁的碰撞来吸能减振。既有原来阻尼器的多种耗能方式，又能简单作用于钢管结构，提高减振和安装效率。
 技术问题
本发明的目的是提供一种安装在圆形钢管内部的空间链球式阻尼器，该阻尼器的优点是便于安装，有着很高的减振效率，并且不会在减振的过程制造大的噪声，改善原本阻尼器安装在结构外部占用空间，并且减振效率低的缺点。
 技术解决方案
本发明的技术方案：
一种置于圆形钢管内的链球式空间阻尼器，包括球形质量振子1、环形外壳2、弹簧3、刚性杆4、粘弹性吸能帽5和连接杆件6；
环形薄片外壳2包围在外侧，当放进圆形钢管之后与钢管内壁贴合，在环形薄片外壳2包围的中央，球形质量振子1通过其上的弹簧3实现与环形薄片外壳2的连接；多个刚性杆4固定在球形质量振子1上，均与球面垂直，并且限定在外壳2所在的平面内，保证刚性杆4端口的粘弹性吸能帽5与环形薄片外壳2之间存在一定距离，该距离通过刚性杆4的长度调节，以上构件形成一个单独的阻尼器，而通过带螺栓的杆件6把多个阻尼器连接起来安置在圆形钢管内形成链球式空间阻尼器。当所属的钢管结构发生振动时，与钢管垂直方向的振动分量会导致弹簧3带动球形质量振子1产生振动，刚性杆件4顶端的粘弹性吸能帽5和环形薄片外壳2发生碰撞，粘弹性材料吸收振动能量；与钢管平行方向的振动分量会由另外一个与这个分量垂直的钢管内的阻尼器消耗，但是这个阻尼器的环形薄片外壳2与钢管的摩擦也能消耗一小部分能量。
所述的球形质量振子1的质量根据安放处钢管结构的频率和荷载的振动频率来确定。
所述的弹簧3的刚度根据安放处钢管结构的频率和荷载的振动频率以及不同方向减振的要求来确定。
所述的刚性杆4的长度根据安放处钢管结构的不同方向减振的要求来确定。
所述的链接杆件6的长度根据单个阻尼器的减振效率衰减范围来确定。
当阻尼器所附属的钢管结构发生振动时，通过弹簧3与外部环形薄片壳体2连接的球形质量振子1也产生振动，与弹簧3形成了调谐质量阻尼器，抵消部分外部激励引起的钢管结构振动响应。同时球形质量振子1的振动会使刚性杆4顶端的粘弹性吸能帽5与环形薄片外壳2产生碰撞，通过碰撞消耗一部分振动能量，粘弹性吸能帽5吸收一部分振动能量。球形质量振子1通过在多个方向的弹簧3与外部环形薄片壳体2的环形外壳内壁相连，在球形质量振子1多个方向上布置刚性杆4，所以球形质量振子1在环形外壳所在平面内的多个方向上都能振动并且刚性杆4与环形薄片外壳2都能产生碰撞。
 有益效果
本发明的有益效果：本发明的阻尼器能简便的安装与圆形钢管内，节省空间和安装成本继承了原来阻尼器的多种耗能方式相结合的特点，达到了良好的耗能减振效果。通过调节各个方向弹簧的刚度、刚性杆的长度以及连接杆件的长度可以实现不同大小和长度钢管结构不同减震效果的功能。
 附图说明
图1是本发明的结构整体示意图。
图2是本发明的结构细节示意图。
图中：1球形质量振子；2环形壳体；3弹簧；4刚性杆；5粘弹性吸能帽；6连接杆件。
 本发明的实施方式
以下结合附图和技术方案，进一步说明本发明的具体实施方式。
一种内置于圆形钢管内的链球式空间阻尼器，包括球形质量振子1，环形外壳2，弹簧3，刚性杆4，粘弹性吸能帽5，连接杆件6；
环形薄片外壳2包围在外侧，当放进圆形钢管之后与钢管内壁贴合，在环形薄片外壳2包围的中央，球形质量振子1通过其上的弹簧3实现与外壳的连接；多个刚性杆4固定在球形质量振子1上，均与球面垂直，并且限定在环形薄片外壳2所在的平面内，保证刚性杆端的粘弹性吸能帽5与环形薄片外壳2之间存在一定距离，该距离通过刚性杆4的长度调节，以上构件形成一个单独的阻尼器，而通过带螺栓的杆件6把多个阻尼器连接起来安置在圆形钢管内形成链球式空间阻尼器。当所属的钢管结构发生振动时，与钢管垂直方向的振动分量会导致弹簧3带动球形质量振子1产生振动，刚性杆件4顶端的粘弹性吸能帽5和环形薄片外壳2发生碰撞，粘弹性材料吸收振动能量；与钢管平行方向的振动分量会由另外一个与这个分量垂直的钢管内的阻尼器消耗，但是这个阻尼器的环形薄片外壳2与钢管的摩擦也能消耗一小部分能量。
所述的球形质量振子1的质量根据安放处钢管结构的频率和荷载的振动频率来确定。
所述的弹簧3的刚度根据安放处钢管结构的频率和荷载的振动频率以及不同方向减振的要求来确定。
所述的刚性杆4的长度根据安放处钢管结构的不同方向减振的要求来确定。
所述的链接杆件6的长度根据单个阻尼器的减振效率衰减范围来确定。
当阻尼器所附属的钢管结构发生振动时，通过弹簧3与外部环形薄片壳体2连接的球形质量振子1也产生振动，与弹簧3形成了调谐质量阻尼器，抵消部分外部激励引起的钢管结构振动响应。同时球形质量振子1的振动会使刚性杆4顶端的粘弹性吸能帽5与环形薄片外壳2产生碰撞，通过碰撞消耗一部分振动能量，粘弹性吸能帽5吸收一部分振动能量。球形质量振子1通过在多个方向的弹簧3与外部环形薄片壳体2的环形外壳内壁相连，在球形质量振子1多个方向上布置刚性杆4，所以球形质量振子1在环形外壳所在平面内的多个方向上都能振动并且刚性杆4与环形薄片外壳2都能产生碰撞。

Claims (10)

  1. 一种钢管内置空间链球式碰撞阻尼器，其特征在于，所述的钢管内置空间链球式碰撞阻尼器包括球形质量振子(1)、环形外壳(2)、弹簧(3)、刚性杆(4)、粘弹性吸能帽(5)和连接杆件(6)；
    环形薄片外壳(2)包围在外侧，当放进圆形钢管之后与钢管内壁贴合，在环形薄片外壳(2)包围的中央，球形质量振子(1)通过其上的弹簧(3)实现与环形薄片外壳(2)的连接；多个刚性杆(4)固定在球形质量振子(1)上，均与球面垂直，并且限定在环形薄片外壳(2)所在的平面内，保证刚性杆(4)端口的粘弹性吸能帽(5)与环形薄片外壳(2)之间存在一定距离，该距离通过刚性杆(4)的长度调节，以上构件形成一个单独的阻尼器；通过带螺栓的连接杆件(6)把多个阻尼器连接起来安置在圆形钢管内形成链球式碰撞阻尼器；当所述的圆形钢管结构发生振动时，与圆形钢管垂直方向的振动分量会导致弹簧(3)带动球形质量振子(1)产生振动，刚性杆(4)顶端的粘弹性吸能帽(5)和环形薄片外壳(2)发生碰撞，粘弹性吸能帽(5)吸收振动能量；与圆形钢管平行方向的振动分量会由另外一个与这个分量垂直的圆形钢管内的阻尼器消耗，但是这个阻尼器的环形薄片外壳(2)与圆形钢管的摩擦也能消耗一小部分能量。
  2. 根据权利要求1所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的球形质量振子(1)的质量根据安放处钢管结构的频率和荷载的振动频率来确定。
  3. 根据权利要求1或2所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的弹簧(3)的刚度根据安放处钢管结构的频率和荷载的振动频率以及不同方向减振的要求来确定。
  4. 根据权利要求1或2所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的刚性杆(4)的长度根据安放处钢管结构的不同方向减振的要求来确定。
  5. 根据权利要求3所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的刚性杆(4)的长度根据安放处钢管结构的不同方向减振的要求来确定。
  6. 根据权利要求1、2或5所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的链接杆件(6)的长度根据单个阻尼器的减振效率衰减范围来确定。
  7. 根据权利要求3所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的链接杆件(6)的长度根据单个阻尼器的减振效率衰减范围来确定。
  8. 根据权利要求4所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的链接杆件(6)的长度根据单个阻尼器的减振效率衰减范围来确定。
  9. 根据权利要求1、2、5、7或8所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的粘弹性吸能帽(5)的厚度及大小根据单个阻尼器的碰撞力的大小来确定。
  10. 根据权利要求6所述的钢管内置空间链球式碰撞阻尼器，其特征在于，所述的粘弹性吸能帽(5)的厚度及大小根据单个阻尼器的碰撞力的大小来确定。
PCT/CN2018/101653 2018-08-22 2018-08-22 一种钢管内置空间链球式碰撞阻尼器 Ceased WO2020037529A1 (zh)

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