CN105406764A

CN105406764A - Rotary type piezoelectric generator apparatus

Info

Publication number: CN105406764A
Application number: CN201510820104.1A
Authority: CN
Inventors: 徐煌
Original assignee: Nanjing Institute of Industry Technology
Current assignee: Nanjing Institute of Industry Technology
Priority date: 2015-11-24
Filing date: 2015-11-24
Publication date: 2016-03-16

Abstract

The invention relates to a rotary type piezoelectric generator apparatus. The rotary type piezoelectric generator apparatus comprises a lower shell, a cam, a cam shaft and a plurality of piezoelectric generation mechanisms; the cam is arranged in the central position of a base; the cam shaft is arranged in the center of the cam and used for driving the cam to rotate; each piezoelectric generation mechanism comprises a pushing rod, an elastic element and a piezoelectric stack; the multiple piezoelectric generation mechanisms are circumferentially arranged in the lower shell around the cam; the elastic element is in contact with the piezoelectric stack and tightly presses the piezoelectric stack; and one end of the pushing rod is connected with the elastic element while the other end of the pushing rod is in contact with the surface of the cam. The rotary type piezoelectric generator apparatus has the beneficial effects that the rotary type piezoelectric generator apparatus performs piezoelectric power generation by the cam, so that the generator apparatus is more reliable, and the service life of the generator apparatus is prolonged; and meanwhile, the seamless joint between the piezoelectric generator apparatus and equipment of industrial applications can be ensured without influencing the power generation efficiency.

Description

A kind of rotary piezoelectric generator device

Technical field

The present invention relates to piezo-electric generating technology, particularly relate to a kind of rotary piezoelectric generator device.

Background technology

Piezo-electric generating material owing to being squeezed and vibrating the characteristic that just can generate electricity, now extensively apply by Most scholars.But piezoelectric is mainly made piezoelectric sheet based on the Blast Furnace Top Gas Recovery Turbine Unit (TRT) of piezo-electric generating material and is engaged with mass by great majority, vibration principle is utilized to make it generate electricity, make piezoelectric generating device generate electricity fluctuation range greatly like this, and complex structure work is unreliable, the life-span is shorter.

Summary of the invention

The present invention is directed to above reason, utilize cam rotor type structural design, rotarily drive piezo-electric device by cam and generate electricity.

For achieving the above object, rotary piezoelectric generator device of the present invention, comprise lower house, cam, camshaft and piezoelectric generating mechanism, described cam is arranged on base center, described camshaft is arranged on cam center, band moving cam rotates, described piezoelectric generating mechanism comprises push rod, flexible member and piezoelectric pile, described piezoelectric generating mechanism is arranged on lower house inside around cam circumference, described flexible member contacts with piezoelectric pile, and pressed against piezoelectric pile, described push rod one end is connected with flexible member, the other end and cam surface contact.

In order to be fixed piezoelectric generating mechanism, in described lower house, cam circumference is provided with six dead slot bodies, described piezoelectric pile and flexible member are arranged in the dead slot body on lower house, and piezoelectric pile is arranged on bottom dead slot body.

Further, in order to be fixed piezoelectric pile, rotary piezoelectric generator device also comprises upper shell, described upper shell is provided with six dead slot bodies suitable with lower house, center is provided with circular hole, described upper shell is bolted through camshaft and lower house, and piezoelectric generating mechanism is arranged in dead slot body.

In order to reduce the friction between cam and push rod, improve generating efficiency, described piezoelectric generating mechanism also comprises roller and pin, and described roller is connected with push rod by pin, and roller conflicting is at cam face.

Preferred flexible member material is rubber, spring or hydraulic means.

Further, the composition of described piezoelectric pile is piezoelectric.

In order to ensure camshaft rotation efficiency, upper shell, lower house and camshaft are provided with bearing.

Cam rotor type structure of the present invention is widely used in water pump and rotating machinery field, therefore utilizes cam piezo-electric generating, more reliably, improves useful life, can ensure carry out slitless connection with the equipment in commercial Application and do not affect its generating efficiency simultaneously.

Accompanying drawing explanation

Fig. 1 is the front view of rotary piezoelectric generator device;

Fig. 2 is the vertical view of rotary piezoelectric generator device;

In figure: 1 is upper shell, 2 is lower houses, and 3 is cams, and 4 is ball bearings, and 5 is rollers, and 6 is pins, and 7 is push rods, and 8 is flexible members, and 9 is piezoelectric pile, and 10 is camshafts, and 11 is dead slot bodies.

Embodiment

As Fig. 1, rotary piezoelectric generator device of the present invention is primarily of lower house 2, cam 3, camshaft 10, dead slot body 11, ball bearing 4 and piezoelectric generating mechanism composition, cam 3 center is connected with camshaft 10, cam 3 is arranged on the center of lower house 2, lower house 2 inner circumferential is provided with six dead slot bodies 11 around cam 3 position, it is inner that piezoelectric generating mechanism is arranged on dead slot body 11, piezoelectric generating mechanism is primarily of roller 5, pin 6, push rod 7, flexible member 8 and piezoelectric pile 9 form, wherein piezoelectric pile 9 is arranged on the bottom of lower house 2 overhead cell body 11, flexible member 8 presses piezoelectric pile 9, flexible member 8 is connected with push rod 7, push rod 7 top connects a roller 5 by pin 6, roller 5 is subject to the elastic force of flexible member 8 and center cams 3 surface is inconsistent.

As Fig. 2, this device top is provided with upper shell 1, upper shell 1 inside is provided with and position on lower house 2 and all consistent dead slot body 11 of quantity, and upper shell 1 center is provided with a circular hole suitable with camshaft 10, camshaft 10 is connected with utilizing ball bearing 4 between upper shell 1 and lower house 2, upper shell 1 is bolted through camshaft and lower house, dead slot body position and piezoelectric generating mechanism position are consistent, cam 3 and piezoelectric generating mechanism are embedded between upper shell 1 and lower house 2, cam 3 and piezoelectric generating mechanism are fixed.

Flexible member in this embodiment adopts elastomeric material, its compressive deformation is larger, when not stressing, strain recovers fast and long service life, the main component of its elastic element 8 can also be spring or hydraulic means, the main component of piezoelectric pile 9 is piezoelectric, and piezoelectric can produce voltage when compressive deformation.

During the work of rotary piezoelectric generator device, camshaft 10 connects external rotational force square, the engine such as rotated, windmill, joystick, the rotating mechanisms etc. such as wheel, because cam 3 is connected with camshaft 10, the rotating band moving cam 3 of camshaft 10 rotates, along with the rotation of cam 3, replaced by convex portion gradually with the base circle portion of the roller contact in piezoelectric generating mechanism, the convex portion pushing rolling wheels 5 of cam 3 moves, roller 5 promotes push rod 7 and moves to the direction of piezoelectric pile 9, push rod 7 promotes flexible member 8 makes it be out of shape, and pressure is passed to piezoelectric pile 9, piezoelectric forced compression distortion in piezoelectric pile 9 produces electric energy, when the highest salient position of projection on cam 3 and roller contact, piezo-electric device stress deformation is maximum.

Now, cam 3 continues along with camshaft 10 rotates, the convex portion contacted with roller 5 gradually replace by base circle portion, in this process, cam 3 convex portion moves away from roller, and now under the resilient force of flexible member 8, push rod 7 is pushed to cam 3 direction and moves, push rod pushing rolling wheels moves to cam 3 direction, until cam 3 moves to base circle position.Now, because the strain of flexible member discharges, piezoelectric pile 9 stress deformation reduces gradually, until recover reset condition.

Along with the continuous rotation of camshaft 10, band moving cam 3 rotates, and piezoelectric pile 9 constantly repeats deformation and recovery process, constantly produces electric energy.

External rotational force square in this device can from different external equipments, realize the slitless connection with other rotating mechanism by the size of modifier and the inner number of increase and decrease piezo-electric device, reliable operation and the life-span long.

Claims

1. A rotary piezoelectric generator device, characterized in that it includes a lower casing (2), a cam (3), a camshaft (10) and a piezoelectric generating mechanism, and the cam (3) is arranged on the lower casing (2), the camshaft (10) is set at the center of the cam (3) to drive the cam (3) to rotate, and the piezoelectric generating mechanism includes a push rod (7), an elastic element (8) and Piezoelectric stack (9), several piezoelectric generating mechanisms are arranged inside the lower casing (2) around the circumference of the cam (3), and the elastic element (8) is in contact with the piezoelectric stack (9) and pressed tightly The stack (9), one end of the push rod (7) is connected to the elastic element (8), and the other end is in contact with the surface of the cam (3).

2. The rotary piezoelectric generator device according to claim 1, characterized in that: the lower casing (2) is provided with empty grooves in the same number as the piezoelectric generator mechanism in the circumferential direction around the cam (3) (11), the piezoelectric stack (9) and the elastic element (8) are arranged in the hollow body (11), and the piezoelectric stack (9) and the elastic element (8) are arranged in the lower case (2) In the hollow body (11), the piezoelectric stack (9) is arranged at the bottom of the hollow body (11).

3. The rotary piezoelectric generator device according to claim 1 or 2, characterized in that: the rotary piezoelectric generator device further comprises an upper casing (1), and the upper casing (1) is There is a hollow body (11) with the same number as the piezoelectric generating mechanism, and a round hole is arranged in the center of the upper casing (1), and the upper casing (1) passes through the camshaft (10) and the lower casing ( 2) Fix the piezoelectric generating mechanism in the hollow body (11) through bolt connection.

4. The rotary piezoelectric generator device according to claim 1, characterized in that: the piezoelectric generator mechanism further comprises a roller (5) and a pin (6), and the roller (5) passes through the pin (6) Connected with the push rod (7), the roller (5) is in contact with the surface of the cam (3).

5. The rotary piezoelectric generator device according to claim 1, characterized in that: the elastic element (8) is rubber, spring or hydraulic device.

6. The rotary piezoelectric generator device according to claim 1, characterized in that: the composition of the piezoelectric stack (9) is piezoelectric material.

7. The rotary piezoelectric generator device according to claim 1, characterized in that: ball bearings (4 ).