CN209823365U - An Anti-vibration Hammer Based on Piezoelectric Energy Dissipation - Google Patents

Abstract

The utility model provides a damper based on piezoelectricity power consumption belongs to power equipment and relevant technical field. The device comprises a rubber sheet, a thin steel sheet, a piezoelectric ceramic sheet, a copper wire, a mass block, a limiting rod and a shell. The utility model discloses utilize the piezoelectricity effect principle innovatively, convert the mechanical energy of structure into electrical potential energy, turn into heat energy through the resistance effect of copper wire then, dissipate the energy constantly, and rubber has certain power consumption effect as a viscoelastic material moreover, makes the damping effect of damper to the power transmission line good; the loss can be reduced when part of parts are replaced by adopting a multi-energy-consumption damping unit; the structure is simple, and the maintenance is easy; the damping parameters can be adjusted by adjusting the number of the energy-consuming damping units or adjusting the specification of the piezoelectric ceramic pieces and the quality of the mass blocks, so that the actual requirements can be better met.

Description

An Anti-vibration Hammer Based on Piezoelectric Energy Dissipation

technical field

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.

Background technique

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.

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.

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.

Utility model content

Technical scheme of the utility model:

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.

The whole device is composed of piezoelectric energy consumption modules, steel cables and clamps;

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;

The end of the rectangular rubber sheet passing through the limit rod is closely attached to the inner wall of the housing;

The rectangular thin steel sheet is closely attached to the rubber sheet, and its thickness is thinner than the rubber sheet;

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;

The cuboid mass is located between the upper and lower piezoelectric ceramic sheets;

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;

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;

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;

The beneficial effects of the utility model:

(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) 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) 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) 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) An anti-vibration hammer based on piezoelectric energy consumption of the utility model has the advantages of simple structure and easy maintenance.

Description of drawings

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;

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;

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;

In the figure: 1 rubber sheet, 2 thin steel sheet, 3 piezoelectric ceramic sheet, 4 mass block, 5 limit rod, 6 shell.

Detailed ways

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.

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.

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;

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;

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.

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.

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.

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.

Claims (3)

1. A kind of anti-vibration hammer based on piezoelectric energy consumption, it is characterized in that, this anti-vibration hammer comprises rubber sheet (1), thin steel sheet (2), piezoelectric ceramic sheet (3), mass block (4), Limit rod (5) and shell (6); The limiting rod (5) is a round rod of equal cross-section, its two ends are rigidly connected to the inner wall of the casing (6), and are placed in the cavity formed by wrapping the casing; The rectangular rubber sheet (1) passes the end of the limit rod (5) and fits closely with the inner wall of the housing; The rectangular thin steel sheet (2) is closely attached to the rubber sheet (1), and the thickness is thinner than the rubber sheet (1); The rectangular piezoelectric ceramic sheet (3) is bonded to the thin steel sheet (2), and its thickness is the same as that of the rubber sheet (1). The positive and negative poles of each piezoelectric ceramic sheet (3) are connected by copper wires to form an electrical circuit; The cuboid mass (4) is located between the upper and lower piezoelectric ceramic sheets (3); The positive and negative poles of each piezoelectric ceramic sheet (3) are connected by more than two copper wires to ensure system redundancy and reliability. 2. A kind of anti-vibration hammer based on piezoelectric energy consumption according to claim 1, characterized in that, the mass block (4), piezoelectric ceramic sheet (3), thin steel sheet (2), rubber The sheet (1) forms a piezoelectric energy consumption unit, and the number of units installed is increased or decreased according to the vibration reduction requirements. 3. A kind of anti-vibration hammer based on piezoelectric energy consumption according to claim 2, characterized in that, the rubber sheet (1), thin steel sheet (2), piezoelectric ceramic sheet (3), mass The block (4) has a circular hole at the centroid, and the diameter of the hole is larger than that of the limit rod (5). The limit rod (5) does not affect the free movement of the piezoelectric energy consumption unit along the rod length.