CN205122644U - A anchor clamps that is used for piezoelectricity to pile up electricity generation structure boning - Google Patents

Abstract

The utility model discloses an anchor clamps that is used for piezoelectricity to pile up electricity generation structure boning, which comprises a baking oven, the lateral wall that the oven is relative on be provided with a pair of screw thread and feed the hole, the screw thread feed install on the hole a pair of can be for the lateral wall feed movement's of oven screwfeed pole, the screwfeed pole stretches out the extramural one end of oven side and is provided with the rotation handle, and the screwfeed pole stretches into the inside one end of oven and solidifies the flexible circular arc clamping piece that has vertical setting, and relative setting of a pair of flexible circular arc clamping piece is used for the centre gripping by the vertical piezoelectricity stack structure who piles up formation of a plurality of monolithic piezoceramics. The utility model discloses a vertical pressure and the sidewise restraint power of even invariant can be applyed to anchor clamps on piezoelectricity stack structure, neat and concrete for firm whole about all laminations when helping the shaping of piezoelectricity lamination, prevents that the dislocation warp, improves the adhesion strength, is suitable for different radial piezoelectricity stack structure.

Description

A fixture for bonding piezoelectric stack power generation structures

technical field

The utility model belongs to the field of road engineering construction and relates to piezoelectric stack power generation, in particular to a clamp for bonding piezoelectric stack power generation structures.

Background technique

During the service life of the road, the road surface will withstand hundreds of thousands or even hundreds of millions of times of repeated axle loads of vehicles, resulting in a large amount of strain energy or kinetic energy accumulated in the road surface, which will eventually be dissipated inside the road surface in the form of heat energy, damaging the pavement structure. The new energy harvesting technology of piezoelectric vibration can effectively realize the conversion of mechanical energy inside the road into electrical energy, and prolong the service life of the road while providing new pollution-free and available energy.

Most of the existing power generation roads use a single piece of piezoelectric ceramic embedded in the road to realize the conversion of mechanical energy to electrical energy. However, the characteristics of high voltage and low current output power of a single piece of piezoelectric ceramic lead to very small output power, and it is difficult to achieve effective power generation. Collect and store. The piezoelectric ceramic stack structure developed based on the principle of parallel connection can double the output current and increase the energy output level, which is suitable as an energy conversion unit for the piezoelectric generating circuit. Most of the existing piezoelectric ceramic stack structures are made by monolithic co-firing process, which is formed by brushing noble metal inner electrode materials between piezoelectric ceramic sheets and sintering at high temperature, which is expensive and difficult to realize large-scale application. The electrode bonding method is used to bond a single piezoelectric ceramic sheet into a multilayer piezoelectric laminate, which can effectively simplify the manufacturing procedure and reduce the production cost.

The electrode bonding method is used to make the piezoelectric stack structure by evenly brushing the conductive glue on the surface of the single ceramic sheet, stacking it neatly and applying the bonding pressure with the help of the weight block. When it is transferred to the oven for sintering, it is easily disturbed by the vibration of the external environment and causes the upper and lower dislocations. The pressure applied by this method is difficult to control, and the individual piezoelectric ceramics are easily misaligned and deformed during processing, and are difficult to be bonded into a whole, and the bonding efficiency is low, and the operation is cumbersome.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of this utility model is to provide a fixture for the bonding of piezoelectric stack power generation structures, which can apply constant and uniform vertical pressure and lateral restraint force, and the piezoelectric stack The sheets are firmly bonded, which solves the problem of easy dislocation and deformation during the processing of the piezoelectric stack power generation structure.

In order to solve the above technical problems, the utility model adopts the following technical solutions to achieve:

A fixture for bonding piezoelectric stack power generation structures, including an oven, a pair of threaded feed holes are arranged on the opposite side walls of the oven, and a pair of threaded feed holes are installed on the thread feed holes that can be fed into the oven relative to the side walls auger feed rod for movement;

The end of the screw feed rod extending out of the side wall of the oven is provided with a rotating handle, and the end of the screw feed rod extending into the oven is fixed with a vertically arranged flexible arc clip, and a pair of flexible arc clips are arranged oppositely. It is used to clamp a piezoelectric stack structure formed by vertically stacking multiple monolithic piezoelectric ceramics.

The utility model also has the following distinguishing technical features:

Nuts are oppositely arranged on the side walls of the flexible circular arc clips close to the opposite openings, and fastening bolts are installed on each pair of nuts.

The upper end of the inside of the oven is consolidated with a horizontal fixed partition, and a guide through hole is arranged in the middle of the horizontal fixed partition, and an indenter movable plate that can move up and down along the inner wall of the oven is arranged above the horizontal fixed partition, and the indenter movable plate A return spring is installed between the horizontal fixed partition;

The movable plate of the pressure head and the top surface of the oven form a sealed air pressure chamber, and the air pressure chamber is supplied with air by an air pump installed outside the oven;

A pressure head is consolidated on the lower surface of the movable plate of the pressure head, and the pressure head passes through the guide through hole and moves up and down relative to the horizontal fixed partition driven by the movable plate of the pressure head.

The indenter is also equipped with a rigid gasket placed between the indenter and the top surface of the piezoelectric stack structure.

The air pressure cavity is provided with an air outlet valve and an air gauge, and an air vent is provided on the side wall of the oven between the movable plate of the pressure head and the horizontal fixed partition near the horizontal fixed partition.

Compared with the prior art, the utility model has the following technical effects:

The fixture of the utility model can apply a uniform and constant vertical pressure and lateral restraint force on the piezoelectric stack structure, which helps all the stacks to be aligned and consolidated into a firm whole when the piezoelectric stacks are formed, preventing misalignment and deformation. Improve the bonding strength and apply to piezoelectric stack structures with different radii. Reasonable design, simple structure, convenient operation and high bonding efficiency. It is of great research significance to prevent dislocation deformation during the processing of the piezoelectric stack structure and ensure the bonding effect.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural view of the flexible arc clip of the present invention.

Fig. 3 is a schematic diagram of the structure of a monolithic piezoelectric ceramic.

Fig. 4 is a structural schematic diagram of a piezoelectric stack structure.

The meaning of each label in the figure is: 1-Oven, 2-Threaded feed hole, 3-Screw feed rod, 4-Turning handle, 5-Flexible arc clip, 6-Single-piece piezoelectric ceramics, 7-Press Electric stacking structure, 8-nut, 9-fastening bolt, 10-horizontal fixed partition, 11-guiding through hole, 12-pressure head movable plate, 13-return spring, 14-air pressure chamber, 15-air pump, 16- Pressure head, 17-rigid gasket, 18-outlet valve, 19-barometer, 20-air vent.

Below in conjunction with accompanying drawing, the specific content of the present utility model is described in further detail.

detailed description

The specific embodiments of the present utility model are provided below, and it should be noted that the present utility model is not limited to the following specific embodiments, and all equivalent transformations done on the basis of the technical solution of the application all fall into the protection scope of the present utility model.

Example 1:

According to the above-mentioned technical scheme, as shown in Fig. 1 to Fig. 4, this embodiment provides a fixture for bonding piezoelectric stack power generation structures, including an oven 1, and a pair of A screw feed hole 2, a pair of screw feed rods 3 capable of feeding movement relative to the side wall of the oven 1 are installed on the screw feed hole 2;

The end of the screw feed rod 3 extending out of the side wall of the oven 1 is provided with a rotating handle 4, and the end of the screw feed rod 3 extending into the inside of the oven 1 is fixed with a vertically arranged flexible arc clip 5, a pair of flexible circular arc clips The arc clips 5 are oppositely arranged for clamping a piezoelectric stack structure 7 formed by vertically stacking a plurality of monolithic piezoelectric ceramics 6 .

Nuts 8 are arranged opposite to each other on the side walls of the flexible arc clips 5 close to the opposite openings, and fastening bolts 9 are installed on each pair of nuts 8 .

The upper end of the oven 1 is consolidated with a horizontal fixed partition 10, a guide through hole 11 is provided in the middle of the horizontal fixed partition 10, and an indenter that can move up and down along the inner wall of the oven 1 is provided above the horizontal fixed partition 10. Plate 12, a return spring 13 is installed between the movable plate 12 of the pressure head and the horizontal fixed partition 10;

The pressure head movable plate 12 and the top surface of the oven 1 form a sealed air pressure cavity 14, and the air pressure cavity 14 is supplied with air by an air pump 15 installed outside the oven 1;

A pressure head 16 is consolidated on the lower surface of the pressure head movable plate 12 , and the pressure head 16 passes through the guide through hole 11 and moves up and down relative to the horizontal fixed partition 10 under the drive of the pressure head movable plate 12 .

The indenter 16 is also equipped with a rigid gasket 17 placed between the indenter 16 and the top surface of the piezoelectric stack structure 7 .

The air pressure chamber 14 is provided with an air outlet valve 18 and an air gauge 19, and the side wall of the oven 1 between the movable plate 12 of the pressure head and the horizontal fixed partition 10 is provided with a ventilation valve near the horizontal fixed partition 10. Mouth 20.

The use process of the clamp of the present utility model is as follows:

Decontaminate each single piece of piezoelectric ceramic 6, wipe it with a wiper and dry it, use the screen printing method to evenly coat the surface of the single piece of piezoelectric ceramic 6, and then apply the single piece of piezoelectric ceramic 6 according to the stacking quantity requirements. The ceramics 6 are neatly stacked to form a piezoelectric stack structure 7 . Then open the lid of the oven 1 , put the piezoelectric stack structure 7 into the oven 1 , align the indenter 16 , and put the rigid gasket 17 on the piezoelectric stack structure 7 .

Rotate the screw feed rod 3 by turning the handle 4, so that the two flexible arc clips 5 wrap the piezoelectric stack structure 7, and connect the nuts 8 at the ends of the two flexible arc clips 5 with fastening bolts 9, apply lateral The binding force further bonds the piezoelectric stack structure 7 firmly.

Close the air outlet valve 18, add air to the air pressure cavity 14 through the air pump 15, and the air pressure pushes the movable plate 12 of the pressure head to drive the pressure head 16 to move downward to apply pressure. Observe the air gauge 19 to adjust the air pressure in the air pressure cavity 14 , so as to adjust the magnitude of the constant pressure applied by the indenter 16 to the piezoelectric stack structure 7 . By applying uniform and constant vertical pressure and lateral restraint force at the same time, the monolithic piezoelectric ceramics 6 are firmly bonded as a whole to form a piezoelectric stack structure 7 so that it does not displace and deform during processing.

Claims (5)

1. the fixture for piezo-electric stack electrification structure bonding, comprise baking oven (1), it is characterized in that: the sidewall that described baking oven (1) is relative is provided with a double thread inlet ports (2), screw thread inlet ports (2) being provided with a pair can relative to the screwfeed bar (3) of the sidewall feed motion of baking oven (1);

Screwfeed bar (3) one end of stretching out outside baking oven (1) sidewall is provided with swing handle (4), screwfeed bar (3) stretches into the inner one end of baking oven (1) and is consolidated with the vertical flexible circular arc intermediate plate (5) arranged, and pair of flexible circular arc intermediate plate (5) is oppositely arranged for clamping by the vertical stacking piezo-electric stack structure (7) formed of multiple monolithic piezoelectric ceramic (6).

2. fixture as claimed in claim 1, it is characterized in that: described flexible circular arc intermediate plate (5) is upper is relatively set with nut (8) separately on the sidewall of relative opening, and often pair of nut (8) is provided with fastening bolt (9).

3. fixture as claimed in claim 1, it is characterized in that: described baking oven (1) inner upper end is consolidated with horizontal stationary barrier (10), guide through hole (11) is provided with in the middle of horizontal stationary barrier (10), horizontal stationary barrier (10) top is provided with the pressure head portable plate (12) that can move up and down along baking oven (1) madial wall, is provided with back-moving spring (13) between pressure head portable plate (12) and horizontal stationary barrier (10);

Pressure head portable plate (12) forms an atmospheric pressure cavity sealed (14) with the end face of baking oven (1), and atmospheric pressure cavity (14) is by being arranged on outside air pump (15) air feed of baking oven (1);

Pressure head portable plate (12) lower surface is consolidated with pressure head (16), pressure head (16) through guide through hole (11) under the drive of pressure head portable plate (12) relative to the elevating movement of horizontal stationary barrier (10).

4. fixture as claimed in claim 3, is characterized in that: described pressure head (16) is also supporting the rigid gasket (17) be placed between pressure head (16) and piezo-electric stack structure (7) end face.

5. fixture as claimed in claim 3, it is characterized in that: described atmospheric pressure cavity (14) is provided with valve of giving vent to anger (18) and barometer (19), the position near horizontal stationary barrier (10) on baking oven (1) sidewall between described pressure head portable plate (12) and horizontal stationary barrier (10) is provided with blow vent (20).