CN209823365U - An Anti-vibration Hammer Based on Piezoelectric Energy Dissipation - Google Patents
An Anti-vibration Hammer Based on Piezoelectric Energy Dissipation Download PDFInfo
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Abstract
Description
技术领域technical field
本实用新型属于电力设备及相关技术领域,尤其涉及一种基于压电耗能的防振锤。The utility model belongs to the field of electric equipment and related technologies, in particular to an anti-vibration hammer based on piezoelectric energy consumption.
背景技术Background technique
随着世界上不少国家和地区用电需求的逐步增加,高压架空线路杆位越来越高,档距越来越大,导线在风荷载作用下的剧烈振动,严重威胁着输电线路的安全运行。导线振动时,导线悬挂处的工作条件最为不利,这是由于导线会因周期性的弯折发生疲劳破坏。防振锤的使用可以起到保护导线,减轻金属疲劳和线路老化的作用。With the gradual increase in electricity demand in many countries and regions in the world, the pole position of high-voltage overhead lines is getting higher and higher, and the span is getting larger and larger. The severe vibration of the conductors under the action of wind loads seriously threatens the safety of transmission lines. run. When the wire is vibrating, the working conditions are the most unfavorable where the wire is suspended, because the wire will suffer fatigue damage due to periodic bending. The use of the anti-vibration hammer can protect the wires and reduce metal fatigue and line aging.
现有的防振锤主要是利用调谐质量阻尼器(Tuned mass damper,即TMD)的原理来达到导线减振的目的。所谓TMD,指的是由质量块、弹簧和阻尼系统组成的结构,其振动频率在主结构频率附近。当风荷载作用在导线上时,TMD会因振子的惯性力和弹簧恢复力而产生与主体结构相反的共振行为。在此过程中,导线振动的能量一部分转换为TMD振子的动能,一部分转化为钢索的弹性势能,余下部分通过TMD耗散。然而,现有的防振锤耗能机制薄弱,减振效果十分有限。Existing anti-vibration hammers mainly use the principle of a tuned mass damper (Tuned mass damper, TMD) to achieve the purpose of wire vibration reduction. The so-called TMD refers to the structure composed of mass block, spring and damping system, whose vibration frequency is near the frequency of the main structure. When the wind load acts on the wire, the TMD will produce a resonance behavior opposite to that of the main structure due to the inertial force of the vibrator and the spring restoring force. During this process, part of the vibration energy of the wire is converted into the kinetic energy of the TMD vibrator, part of it is converted into the elastic potential energy of the steel cable, and the rest is dissipated through the TMD. However, the energy dissipation mechanism of the existing anti-vibration hammer is weak, and the vibration reduction effect is very limited.
本实用新型创造性地提出了一种基于压电耗能的防振锤,利用压电效应原理,将TMD振子的动能转化为电能,大大提高耗能效率,增强减振效果。The utility model creatively proposes an anti-vibration hammer based on piezoelectric energy consumption, which uses the principle of piezoelectric effect to convert the kinetic energy of the TMD vibrator into electrical energy, greatly improving energy consumption efficiency and enhancing the vibration reduction effect.
实用新型内容Utility model content
本实用新型的技术方案:Technical scheme of the utility model:
一种基于压电耗能的防振锤,包括橡胶片、薄钢片、压电陶瓷片、质量块、限位杆、外壳。An anti-vibration hammer based on piezoelectric energy consumption comprises a rubber sheet, a thin steel sheet, a piezoelectric ceramic sheet, a quality block, a limit rod, and a casing.
整个装置由压电耗能模块、钢索及线夹组成;The whole device is composed of piezoelectric energy consumption modules, steel cables and clamps;
所述的限位杆为等截面圆杆,与外壳刚接,置于外壳包裹形成的空腔之中;The limiting rod is a round rod of equal cross-section, which is rigidly connected to the casing and placed in a cavity formed by wrapping the casing;
所述的矩形橡胶片过限位杆的端部,与外壳内壁紧密贴合;The end of the rectangular rubber sheet passing through the limit rod is closely attached to the inner wall of the housing;
所述的矩形薄钢片与橡胶片紧密贴合,厚度比橡胶片薄;The rectangular thin steel sheet is closely attached to the rubber sheet, and its thickness is thinner than the rubber sheet;
所述的矩形压电陶瓷片与钢片贴合,厚度与橡胶片相同,每个压电陶瓷片正负极通过铜丝连接,形成电回路;The rectangular piezoelectric ceramic sheet is bonded to the steel sheet, the thickness is the same as that of the rubber sheet, and the positive and negative poles of each piezoelectric ceramic sheet are connected by copper wires to form an electrical circuit;
所述的长方体质量块位于上下两片压电陶瓷片之间;The cuboid mass is located between the upper and lower piezoelectric ceramic sheets;
所述每个压电陶瓷片正负极用2根以上铜丝连接,以保证系统的冗余度和可靠性;The positive and negative electrodes of each piezoelectric ceramic sheet are connected with more than two copper wires to ensure the redundancy and reliability of the system;
所述橡胶片、薄钢片、压电陶瓷片、质量块在形心处有圆形孔洞,孔洞直径比限位杆直径略大,限位杆不影响压电耗能单元沿杆长方向的自由运动;The rubber sheet, thin steel sheet, piezoelectric ceramic sheet, and mass block have a circular hole at the centroid, and the diameter of the hole is slightly larger than the diameter of the limit rod. The limit rod does not affect the piezoelectric energy consumption unit along the length of the rod. free movement;
所述质量块、压电陶瓷片、薄钢片、橡胶片组成压电耗能单元,单元设置数量根据减振要求进行增减;The mass block, piezoelectric ceramic sheet, thin steel sheet, and rubber sheet form a piezoelectric energy consumption unit, and the number of units installed is increased or decreased according to the vibration reduction requirements;
本实用新型的有益效果:The beneficial effects of the utility model:
(1)本实用新型的一种基于压电耗能的防振锤,将导线振动动能转化为压电陶瓷的电能,继而转化为热能,耗能效率高,减振效果好。(1) An anti-vibration hammer based on piezoelectric energy consumption of the utility model converts the vibration kinetic energy of the wire into electrical energy of piezoelectric ceramics, and then converts it into heat energy, which has high energy consumption efficiency and good vibration reduction effect.
(2)本实用新型的一种基于压电耗能的防振锤,橡胶片作为一种粘弹性材料可以产生微小变形,除了保护压电陶瓷片外,也可适当耗能。(2) In the anti-vibration hammer based on piezoelectric energy consumption of the present utility model, the rubber sheet, as a kind of viscoelastic material, can produce small deformation, in addition to protecting the piezoelectric ceramic sheet, it can also properly consume energy.
(3)本实用新型的一种基于压电耗能的防振锤,可根据实际需要对压电耗能单元的数量、压电陶瓷片的规格、质量块的质量进行调整,实现阻尼参数的调节。(3) An anti-vibration hammer based on piezoelectric energy consumption of the utility model can adjust the quantity of piezoelectric energy consumption units, the specifications of piezoelectric ceramic sheets, and the quality of mass blocks according to actual needs, so as to realize the adjustment of damping parameters. adjust.
(4)本实用新型的一种基于压电耗能的防振锤,各个耗能单元相互独立,更换部分零件时可降低损失。(4) In the anti-vibration hammer based on piezoelectric energy consumption of the utility model, each energy consumption unit is independent of each other, and the loss can be reduced when replacing some parts.
(5)本实用新型的一种基于压电耗能的防振锤,具有构造简单,易于维护等优点。(5) An anti-vibration hammer based on piezoelectric energy consumption of the utility model has the advantages of simple structure and easy maintenance.
附图说明Description of drawings
图1为本实用新型实施例提供的一种基于压电耗能的防振锤的B-B剖面图;Fig. 1 is the B-B sectional view of a kind of anti-vibration hammer based on piezoelectric energy consumption provided by the embodiment of the present invention;
图2为本实用新型实施例提供的一种基于压电耗能的防振锤的A-A剖面图;Fig. 2 is an A-A sectional view of an anti-vibration hammer based on piezoelectric energy consumption provided by an embodiment of the present invention;
图3为本实用新型实施例提供的一种基于压电耗能的防振锤的安装示意图;Fig. 3 is a schematic diagram of the installation of a piezoelectric energy-consuming anti-vibration hammer provided by an embodiment of the present invention;
图中:1橡胶片、2薄钢片、3压电陶瓷片、4质量块、5限位杆、6外壳。In the figure: 1 rubber sheet, 2 thin steel sheet, 3 piezoelectric ceramic sheet, 4 mass block, 5 limit rod, 6 shell.
具体实施方式Detailed ways
为使得本实用新型的实用新型目的、特征、优点能够更加的明显和易懂,下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,下面所描述的实施例仅仅是本实用新型一部分实施例,而非全部的实施例。基于本实用新型中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本实用新型保护的范围。In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the utility model embodiment will be clearly and completely described below in conjunction with the accompanying drawings in the utility model embodiment, Apparently, the embodiments described below are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.
请参阅图1至图3,本实用新型实施例提供的一种基于压电耗能的防振锤的一个实施例,包括:橡胶片1、薄钢片2、压电陶瓷片3、质量块4、限位杆5、外壳6。Please refer to Fig. 1 to Fig. 3, an embodiment of an anti-vibration hammer based on piezoelectric energy consumption provided by the embodiment of the utility model, including: rubber sheet 1, thin steel sheet 2, piezoelectric ceramic sheet 3, mass block 4, limit rod 5, shell 6.
在本实施例中,压电耗能单元由橡胶片1、薄钢片2、压电陶瓷片3、质量块4构成,其中耗能单元各部件形心处均开有直径大于限位杆5直径的圆孔,耗能单元可沿杆长方向自由运动;In this embodiment, the piezoelectric energy consumption unit is composed of a rubber sheet 1, a thin steel sheet 2, a piezoelectric ceramic sheet 3, and a mass block 4, wherein each part of the energy consumption unit has a diameter larger than a limit rod 5 The diameter of the hole is small, and the energy dissipation unit can move freely along the length of the rod;
当导线发生振动时,压电耗能单元由于质量较大,在惯性作用下运动迟滞,导致外壳6对压电耗能单元产生挤压;When the wire vibrates, the piezoelectric energy-consuming unit moves sluggishly under the action of inertia due to its large mass, causing the shell 6 to squeeze the piezoelectric energy-consuming unit;
橡胶片1在外壳6的挤压下产生变形,耗散了部分能量;外壳6的挤压力通过橡胶片1传给薄钢片2,薄钢片2在保护压电陶瓷片3的同时又将压力均匀传给压电陶瓷片3;压电陶瓷片3与薄钢片2紧密贴合,在压力的作用下压电陶瓷片3上下表面分别产生正负电荷,通过连接正负极的铜丝形成闭合回路,将电能转化为热能并快速耗散,达到良好减振效果。The rubber sheet 1 is deformed under the extrusion of the shell 6, which dissipates part of the energy; the extrusion force of the shell 6 is transmitted to the thin steel sheet 2 through the rubber sheet 1, and the thin steel sheet 2 protects the piezoelectric ceramic sheet 3 and simultaneously The pressure is uniformly transmitted to the piezoelectric ceramic sheet 3; the piezoelectric ceramic sheet 3 is closely attached to the thin steel sheet 2, and under the action of pressure, the upper and lower surfaces of the piezoelectric ceramic sheet 3 generate positive and negative charges respectively. The wire forms a closed loop, which converts electrical energy into heat and dissipates it quickly, achieving a good vibration reduction effect.
本实用新型的一种基于压电耗能的防振锤,将导线振动动能转化为压电陶瓷的电能,继而转化为热能,耗能效率高,减振效果好;橡胶片作为一种粘弹性材料可以产生微小变形,除了保护压电陶瓷片外,也可适当耗能;可根据实际需要对压电耗能单元的数量、压电陶瓷片的规格、质量块的质量进行调整,实现阻尼参数的调节;各个耗能单元相互独立,更换部分零件时可降低损失;具有构造简单,易于维护等优点。The anti-vibration hammer based on piezoelectric energy consumption of the utility model converts the vibration kinetic energy of the wire into the electric energy of piezoelectric ceramics, and then converts it into heat energy, which has high energy consumption efficiency and good vibration damping effect; the rubber sheet is used as a viscoelastic The material can produce slight deformation, in addition to protecting the piezoelectric ceramic sheet, it can also consume energy properly; the number of piezoelectric energy-consuming units, the specification of the piezoelectric ceramic sheet, and the quality of the mass block can be adjusted according to actual needs to achieve damping parameters The adjustment; each energy consumption unit is independent of each other, and the loss can be reduced when replacing some parts; it has the advantages of simple structure and easy maintenance.
设计本实用新型时需要注意:第一,橡胶片1、薄钢片2、压电陶瓷片3、质量块4均与外壳内壁周边不接触;第二,橡胶片1、薄钢片2、压电陶瓷片3、质量块4均与限位杆有一定间隙,避免限位杆影响压电耗能单元的运动;第三,外壳和限位杆采用不锈钢制作,从而避免装置在接触雨水时产生锈蚀;第四,压电陶瓷片上下表面应采用多根(2根以上)铜丝相连,保证系统的可靠度和冗余度。When designing the utility model, attention should be paid to: first, the rubber sheet 1, the thin steel sheet 2, the piezoelectric ceramic sheet 3, and the mass block 4 are not in contact with the periphery of the inner wall of the shell; secondly, the rubber sheet 1, the thin steel sheet 2, the pressure There is a certain gap between the electric ceramic sheet 3 and the mass block 4 and the limit rod, so as to prevent the limit rod from affecting the movement of the piezoelectric energy-consuming unit; third, the shell and the limit rod are made of stainless steel, so as to prevent the device from being generated when it contacts rainwater. Corrosion; Fourth, the upper and lower surfaces of the piezoelectric ceramic sheet should be connected by multiple (more than 2) copper wires to ensure the reliability and redundancy of the system.
以上实施例仅用以说明本实用新型的技术方案,而非对其限制;尽管参照前述实施例对本实用新型进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本实用新型各实施例技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be applied to the foregoing embodiments The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
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CN110198024A (en) * | 2019-06-04 | 2019-09-03 | 大连理工大学 | A kind of damper based on piezoelectricity energy consumption |
CN110198024B (en) * | 2019-06-04 | 2024-02-06 | 大连理工大学 | Damper based on piezoelectricity power consumption |
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