CN104158437B - Continuous power generation device in rotating process of piezoelectric mine hoist - Google Patents

Continuous power generation device in rotating process of piezoelectric mine hoist Download PDF

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Publication number
CN104158437B
CN104158437B CN201410375124.8A CN201410375124A CN104158437B CN 104158437 B CN104158437 B CN 104158437B CN 201410375124 A CN201410375124 A CN 201410375124A CN 104158437 B CN104158437 B CN 104158437B
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energy
piezoelectric
piezoelectric patches
rotating shaft
module
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CN104158437A (en
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江帆
朱真才
李伟
周公博
曹国华
彭玉兴
沈刚
卢昊
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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Abstract

The invention provides a continuous power generation device in rotating process of a piezoelectric mine hoist. The continuous power generation device comprises an upper base and a lower base which are symmetrically buckled and fixed on a rotating shaft; energy acquisition modules, rectifying modules and energy storage modules are symmetrically arranged on the upper base and the lower base at intervals in sequence; protective hoods fixed on the bases are hooded at the outer parts of the energy acquisition modules, the rectifying modules and the energy storage modules; each energy acquisition module comprises a box-shaped piezo-electricity sleeve; a mass rod is arranged in the piezo-electricity sleeve; four piezoelectric plates clung to the cylindrical surface of the mass rod are symmetrically arranged on the periphery of the mass rod; the four piezoelectric plates are mounted on the walls of a square groove formed in the hollow inner circle surface of the piezo-electricity sleeve in a symmetrical fit. Through the adoption of the energy acquisition modules, the mechanical energy such as gravitational potential energy and vibrational energy in the rotating process of the rotating shaft of the hoist are continuously converted into electrical energy, then, the electrical energy is stored by the rectifying modules and the energy storage modules, the power supply is provided for a rotation monitoring system, no electromagnetic field interference is generated in wireless transmission, the use is convenient and the maintenance cost is low.

Description

A kind of piezoelectric type mine hoist rotary course continuous generating device
Technical field
The present invention relates to a kind of piezoelectric type mine hoist rotary course continuous generating device, belong to the energy and electronic technology Field.It is particularly suited for for the mechanical energy such as vibrational energy being converted into electric energy, provide power supply for rotation monitoring system.
Background technology
At present, the structure of slewing is increasingly complicated, and function is also rich and varied, the requirement more and more higher of its safe operation, Thus to slewing key rotary part carry out real-time health monitoring of great interest and research.To rotary part When being monitored system constructing, traditional wired data transfer form shows significant limitation, thus, Radio Transmission Technology It is widely used.But, there is a problem of that the energy continuously supplies deficiency based on the monitoring system being wirelessly transferred.
Three kinds substantially can be attributed to for solving the method that wireless monitor system is powered: the first is also in prior art Simplest a kind of it is simply that on rotating mechanism use monitoring system in additional disposable battery or rechargeable battery.This Although method is simple, however it is necessary that configuration and periodic replacement battery.Second is by the external cable power of brush, is typically implemented Mode is: the monitoring system working on rotary body arranges corresponding sheet metal, the brush that outside setting is matched with it, and brush connects External power source.In rotary course, brush is contacted with sheet metal all the time, realizes power supply.But, rotating machinery is usually operated at relatively In severe and complex environment, brush can by greasy dirt, the pollution of dust and make the power supply instability of system.Meanwhile, brush with , there is abrasion condition in sheet metal sliding friction, need to regularly replace.The third is to be powered by radio-frequency magnetic induction wireless, outside Power supply pass through coil by frequency signal pass through electromagnetic radiation be transmitted into reception end-coil, then by frequency current change be embodied as The monitoring system working on rotating mechanism provides power supply.There is certain electromagnetic radiation in this power supply mode, affect when serious Effective transmission of monitoring system wireless signal.
Application No.: 201210451575.6, a kind of confession powered for measurement sensor is disclosed on rotating machinery Electric installation, involved electric supply installation is not belonging to above-mentioned three kinds of traditional power supply modes, and its essence is a kind of by revolving coil Cutting magnetic line produces " motor generating " pattern of electric current, but this confession electrically needs to increase an outside support props up Support fixed electromagnet, the original equipment Foundations of broken ring.Application No.: 201310216345.6 disclose one kind is based on piezoelectric cantilever The hanging type rotary generator that beam mutually swashs, and disclosed in Patent No. zl201110274652.0, a kind of symmetrical mine hoist is used Rotary piezoelectric generation device, is so that piezoelectric patches is deformed thus realizing the purpose of rotary electrification by the change of magnetic force.Three patents Disclosed document, its principle is that mechanical energy is converted into electromagnetic energy, is converted into electric energy eventually through piezoelectric patches.Due to depositing of magnetic field Can affected by certain when monitoring system is by wireless transmit transmission data.
Content of the invention
Technical problem: the purpose of the present invention is the weak point overcoming in prior art, provides a kind of piezoelectric type mine to carry Rise machine rotary course continuous generating device, by the mechanical energy of rotation is converted into electric energy, thus being the prison being arranged in rotation Examining system provides self-generating power source.
Technical scheme: the piezoelectric type mine hoist rotary course continuous generating device of the present invention, fasten simultaneously including symmetrical It is fixed on the upper bottom base in rotating shaft, upper bottom base is symmetrically interval with energy acquisition module, rectification module and energy storage successively Module, energy acquisition module, rectification module and energy-storage module outer cup are buckled with the protective cover being fixed on pedestal, described energy Acquisition module includes the piezoelectricity bushing in case shape, is provided with quality rod, is arranged with and matter around quality rod in piezoelectricity bushing Four piezoelectric patches that the length bar face of cylinder fits, four piezoelectric patches are symmetrically jointly mounted to open on piezoelectricity bushing hollow internal circular surfaces If square groove wall in.
Described piezoelectric patches includes insulation fill stratum respectively, interval is located at insulation filling in the layer multilayer piezoelectric ceramic and company Connect the binding post of multilayer piezoelectric ceramic;Described upper bottom base is bolted in rotating shaft;Described insulation fill stratum For elastic insulant.
Beneficial effect: the present invention combines piezoelectric principle and realizes the gravitional force in rotary course, will using piezoelectric effect The mechanical energy of rotation is converted into electric energy, can realize self power generation, also do not exist meanwhile in the case of not destroying rotation and ground The interference that electromagnetic field is wirelessly transferred to monitoring system.Due to set energy acquisition module, rectification module and energy-storage module pair Claim to install, the balance of original rotation will not be destroyed.All include four piezoelectric patches in upper and lower two energy acquisition modules, make full use of Mechanical energy in rotary course, improves generated energy it is achieved that during rotating shaft integral cycle rotating uninterrupted.Adopted using energy The mechanical energy such as the gravitional force in elevator rotating shaft rotary course, vibrational energy are continuously converted into after electric energy collection module Rectified module and energy-storage module stored, and being embodied as rotating monitoring system provides power supply, and non-electromagnetic field is to being wirelessly transferred Interference is it is not necessary to install supporting support, easy to use, maintenance cost is low, has wide applicability.
Brief description
Fig. 1 is the side sectional view of apparatus of the present invention;
Fig. 2 is the cross-sectional end view of apparatus of the present invention;
Fig. 3 is the piezoelectric patches section cascaded structure schematic diagram of apparatus of the present invention;
Fig. 4 is the piezoelectric patches section parallel-connection structure schematic diagram of apparatus of the present invention.
In figure: 1- energy acquisition module, 2- rectification module, 3- energy-storage module, the upper bottom base of 4-, 5- protective cover, 6- rotating shaft, 7- mass rod, 8a, 8b, 8c, 8d- piezoelectric patches, 9- piezoelectricity bushing, 10- piezoelectric ceramics, 11- binding post, 12- insulation fill stratum, 13- bolt.
Specific embodiment
Below in conjunction with the accompanying drawings one embodiment of the present of invention is further described:
As shown in Figure 1 and Figure 2, the piezoelectric type mine hoist rotary course continuous generating device of the present invention, mainly by energy Acquisition module 1, rectification module 2, energy-storage module 3, upper bottom base 4, protective cover 5, rotating shaft 6 are constituted, and upper bottom base 4 symmetrically fastens logical Cross bolt 13 to be fixedly mounted in rotating shaft 6, rotate with rotating shaft 6.It is respectively equipped with arranged for interval symmetrical above and below on upper bottom base 4 Energy acquisition module 1, rectification module 2 and energy-storage module 3, set outside energy acquisition module 1, rectification module 2 and energy-storage module 3 There is the protective cover 5 being fastened on upper bottom base 4, protective cover 5 is used for protection and is symmetrically mounted on the energy acquisition mould on pedestal 4 Block 1, rectification module 2 and energy-storage module 3, wherein energy acquisition module 1, rectification module 2 and energy-storage module 3 are linked in sequence, described The energy acquisition module 1 piezoelectricity bushing 9 that includes in case shape, be provided with quality rod 7 in piezoelectricity bushing 9, right around quality rod 7 Claim to be provided with four piezoelectric patches 8a, 8b, 8c, the 8d fitting with quality rod 7 faces of cylinder, the internal circular surfaces of piezoelectricity bushing 9 hollow are opened There is the groove that section is square, in four walls of square groove, be respectively mounted four piezoelectric patches 8a, 8b, 8c, 8d, four pressures Electric piece 8a, 8b, 8c, 8d pass through metal glue conjunction respectively and are fixed on the groove walls open up on piezoelectricity bushing 9 hollow internal circular surfaces In.
As shown in Fig. 3 Fig. 4, four described piezoelectric patches 8a, 8b, 8c, 8d include insulation fill stratum 12 respectively, interval is located at Multiple piezoelectric ceramics 10 in insulation fill stratum 12 and binding post 11, piezoelectric ceramics 10 is alternate with insulation fill stratum 12 to be combined, Can be series connection or parallel connection.Described insulation fill stratum 12 is the insulant of elasticity.During actually used, root Determine that according to field condition the connected mode between the quantity of piezoelectric ceramics 10 and piezoelectric ceramics 10 is in parallel or series.
Operation principle: during use, first upper bottom base 4 is fixed in rotating shaft 6, up and down after pedestal 4 fixes, by energy Amount acquisition module 1, rectification module 2 and energy-storage module 3 are symmetrically mounted on bottom base 4 corresponding position and pass through wire successively Connect.When energy acquisition module 1 rotates with rotating shaft, when the invariablenes turning speed of rotating shaft 6, centrifugal force suffered by quality rod 7 is constant, so Centrifugal action is constant in the pressure of piezoelectric patches 8a, 8b, 8c, 8d, thus centrifugal force will not make under stabilized (steady-state) speed piezoelectric patches 8a, 8b, 8c, 8d produce electricity, but because the gravity size and Orientation of quality rod 7 is constant, in rotary course, gravity is in piezoelectric patches Component on 8a, 8b, 8c, 8d is change, thus producing electricity;When the velocity variations of rotation, act on piezoelectric patches Centrifugal force is also change, thus its generated energy makes a concerted effort to produce by weight component and centrifugal action on piezoelectric patches;If rotation In vibration, vibration can make to act on the changing, thus producing electricity of power on piezoelectric patches for unloading.Four piezoelectric patches 8a, 8b, The electricity that 8c, 8d produce passes through the process of rectification module 2, is stored by energy-storage module 3, for the use of follow-up electric elements.

Claims (1)

1. a kind of piezoelectric type mine hoist rotary course continuous generating device it is characterised in that: it includes symmetrically fastening and solid It is scheduled on the upper bottom base (4) in rotating shaft (6), upper bottom base (4) is symmetrically interval with energy acquisition module (1), rectification successively Module (2) and energy-storage module (3), energy acquisition module (1), rectification module (2) and energy-storage module (3) outer cup are buckled with and are fixed on Protective cover (5) on pedestal (4), described energy acquisition module (1) includes the piezoelectricity bushing (9) in case shape, piezoelectricity bushing (9) it is provided with quality rod (7) in, around quality rod (7), be arranged with four piezoelectric patches fitting with quality rod (7) face of cylinder (8a, 8b, 8c, 8d), four piezoelectric patches (8a, 8b, 8c, 8d) are symmetrically jointly mounted on piezoelectricity bushing (9) hollow internal circular surfaces In the square groove wall opening up;During use, upper bottom base (4) is fixed in rotating shaft (6), after upper bottom base (4) fixes, Energy acquisition module (1), rectification module (2) and energy-storage module (3) are symmetrically mounted on the upper corresponding position of upper bottom base (4) simultaneously It is sequentially connected by wire;Energy acquisition module (1) rotates with rotating shaft, when the invariablenes turning speed of rotating shaft (6), quality rod (7) institute Constant by centrifugal force, such centrifugal action is constant in the pressure of piezoelectric patches (8a, 8b, 8c, 8d), thus centrifugal force turns stable Piezoelectric patches (8a, 8b, 8c, 8d) will not be made under speed to produce electricity, because the gravity size and Orientation of quality rod (7) is constant, rotation During component on piezoelectric patches (8a, 8b, 8c, 8d) for the gravity be change, thus producing electricity;Velocity variations when rotation When, act on the centrifugal force on piezoelectric patches be also change, thus its generated energy by weight component and centrifugal action in piezoelectricity Make a concerted effort on piece to produce;If rotation has vibration, vibration can make to act on the changing, thus producing electricity of power on piezoelectric patches Amount;Passed through the process of rectification module (2) by the electricity that four piezoelectric patches (8a, 8b, 8c, 8d) produce, stored up by energy-storage module (3) Deposit, for the use of follow-up electric elements.
2. the piezoelectric type mine hoist rotary course continuous generating device according to right 1 requires it is characterised in that: institute The multilamellar that the piezoelectric patches (8a, 8b, 8c, 8d) stated includes insulation fill stratum (12) respectively, interval is located in insulation fill stratum (12) Piezoelectric ceramics (10) and the binding post (11) connecting multilayer piezoelectric ceramic (10).
3. the piezoelectric type mine hoist rotary course continuous generating device according to right 1 requires it is characterised in that: institute The upper bottom base (4) stated is fixed in rotating shaft (6) by bolt (13).
4. the piezoelectric type mine hoist rotary course continuous generating device according to right 2 requires it is characterised in that: institute The insulation fill stratum (12) stated is the insulant of elasticity.
CN201410375124.8A 2014-07-31 2014-07-31 Continuous power generation device in rotating process of piezoelectric mine hoist Active CN104158437B (en)

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CN105540384B (en) * 2016-01-27 2017-10-13 中国矿业大学 One kind buffering and energy acquisition rolling cage shoe
CN115406567B (en) * 2022-08-04 2024-09-17 同济大学 Self-powered stress monitoring system

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US8558234B2 (en) * 2010-02-11 2013-10-15 California Institute Of Technology Low voltage low light imager and photodetector
CN102497133B (en) * 2011-11-25 2014-09-17 河北工业大学 Electromagnetic vibration generating device of permanent magnet and application thereof in vibration detection system
CN102864713A (en) * 2012-08-30 2013-01-09 樊荣 Power generation pavement made of piezoelectric material
CN202721623U (en) * 2012-09-01 2013-02-06 浙江师范大学 Self-powered apparatus used for monitoring oil gas conveying pipelines

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