CN112737410A - Power generation equipment for recovering gravitational potential energy - Google Patents
Power generation equipment for recovering gravitational potential energy Download PDFInfo
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- CN112737410A CN112737410A CN202110028339.2A CN202110028339A CN112737410A CN 112737410 A CN112737410 A CN 112737410A CN 202110028339 A CN202110028339 A CN 202110028339A CN 112737410 A CN112737410 A CN 112737410A
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- 238000010248 power generation Methods 0.000 title claims abstract description 79
- 238000005381 potential energy Methods 0.000 title claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 238000004064 recycling Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
- H02N2/186—Vibration harvesters
- H02N2/188—Vibration harvesters adapted for resonant operation
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The invention discloses power generation equipment for recovering gravitational potential energy, which comprises a rack, a motor, a lifting shaft, a ratchet mechanism and a piezoelectric power generation box, wherein the motor, the lifting shaft and the ratchet mechanism are sequentially connected in a shaft connection mode, a rope is wound on the lifting shaft, the motor and the piezoelectric power generation box are fixed on the rack, and two ends of the lifting shaft are provided with supporting structures fixed on the rack. The piezoelectric power generation box comprises at least two groups of piezoelectric power generation devices, a box body and a linkage chain, wherein the piezoelectric power generation devices are arranged in the box body; the piezoelectric power generation device comprises a chain wheel, an inner ring, an outer ring and a piezoelectric power generation set. The chain wheels of the piezoelectric power generation devices are linked through a linkage chain. The system can be used for recovering the gravitational potential energy when the cargo descends, and the gravitational potential energy is converted into electric energy through a special rotary piezoelectric effect. The system can be arranged on an elevator, a crane and a lifter to recycle gravitational potential energy lost when a lifting object descends, and fully utilize the energy.
Description
Technical Field
The invention belongs to the field of power generation devices, and particularly relates to power generation equipment for recovering gravitational potential energy.
Background
In order to recover the gravitational potential energy generated during the working of elevators, cranes and the like, numerous scholars at home and abroad propose to convert the gravitational potential energy into electric energy by utilizing the principles of electromagnetic induction law, piezoelectric effect, triboelectric effect and the like and design various power generation devices, thereby achieving the effect of recovering energy. The existing power generation device is provided with magnets on two sides of a transportation channel, and goods are cut into magnetic induction lines to generate induced electromotive force when being transported up and down, so that the effect of power generation is achieved.
Most of the existing elevators, cranes and elevators recover gravitational potential energy for power generation, a mode of directly installing magnets on two sides of a transportation channel is selected, goods are regarded as conductors, and the goods are used for cutting magnetic induction lines in the ascending and descending processes to generate power, so that the potential energy generated by the reciprocating motion power generation is low, the energy recovery rate is low, and excessive energy waste is caused. The traditional device can cut the magnetic induction line to generate electromotive force only when goods can be used as conductors, and the traditional device cannot generate electricity when the goods are insulators, so that the application range is not wide enough. Moreover, the conventional power generation device is oversized, and the increase of the volume of the power generation device can greatly reduce the output power density (the ratio of the output power to the working volume), and also can bring about the defects of increased manufacturing cost, excessive bulkiness and unsuitability for recycling gravity power generation.
Disclosure of Invention
The technical problem to be solved by the invention is to provide power generation equipment for recovering gravitational potential energy, and the system can be used for recovering the gravitational potential energy when goods descend and converting the gravitational potential energy into electric energy through a special rotary piezoelectric effect. The system can be arranged on an elevator, a crane and a lifter to recycle gravitational potential energy lost when a lifting object descends, and fully utilize the energy.
In order to solve the technical problems, the invention adopts the following technical scheme:
a power generation device for recovering gravitational potential energy comprises a rack, a motor, a lifting shaft, a ratchet mechanism and a piezoelectric power generation box, wherein the motor, the lifting shaft and the ratchet mechanism are sequentially connected in a shaft connection mode, a rope is wound on the lifting shaft, the motor and the piezoelectric power generation box are fixed on the rack, and two ends of the lifting shaft are provided with supporting structures fixed on the rack;
the piezoelectric power generation box comprises at least two groups of piezoelectric power generation devices, a box body and a linkage chain, wherein the piezoelectric power generation devices are arranged in the box body; the piezoelectric power generation device comprises a chain wheel, an inner ring, an outer ring and a piezoelectric power generation set; wherein the content of the first and second substances,
the outer ring is of a cylindrical structure with one open end, and the other end of the outer ring is a closed end and is fixed in the box body; an inner column is arranged at the center of the inner wall of the closed end of the outer ring; at least two groups of magnets are uniformly arranged on the inner surface of the side wall of the outer ring along the circumferential direction, and at least two groups of magnets are uniformly arranged on the surface of the inner column along the circumferential direction;
the inner ring is cylindrical, one end of the inner ring is fixed to the chain wheel and is concentric with the chain wheel, and the other end of the inner ring is matched with the outer ring through a bearing so that the outer ring and the inner ring can rotate relatively; the inner ring is provided with at least two groups of piezoelectric power generation sets along the circumferential direction, each piezoelectric power generation set comprises a piezoelectric component, each piezoelectric component is fixedly connected to the inner ring, one end of each piezoelectric component faces the inner surface of the side wall of the outer ring, and the other end of each piezoelectric component faces the inner column;
the ratchet mechanism is connected to the chain wheel of one of the piezoelectric power generation devices in the piezoelectric power generation box in a shaft connection mode, and the chain wheels of the piezoelectric power generation devices are linked through the linkage chain.
In one embodiment, the piezoelectric element includes a cantilever beam, a piezoelectric sheet and two magnets, the piezoelectric sheet is attached to the cantilever beam, and the two magnets are respectively fixed at two ends of the cantilever beam.
In a specific embodiment, a rectangular groove is formed in the inner ring, and the middle position of the cantilever beam of the piezoelectric assembly is fixedly connected to the rectangular groove of the inner ring.
In a specific embodiment, the number of the piezoelectric sheets of the piezoelectric component is 4, and the 4 piezoelectric sheets are symmetrically attached to the upper and lower surfaces of the cantilever beam along the middle position of the cantilever beam.
In one embodiment, the polarities of the opposite end faces of the magnets of the piezoelectric assembly and the magnets of the outer ring are the same.
In a specific embodiment, each piezoelectric power generation set includes three piezoelectric components, and the three piezoelectric components are arranged along a radial direction of the inner ring.
In one embodiment, each set of magnets on the outer ring includes three magnets.
In one embodiment, the outer ring has three sets of magnets on the inner surface of the side wall, and the inner post has three sets of magnets on the surface.
In a specific embodiment, the ratchet mechanism is connected with the chain wheel of the uppermost piezoelectric power generation device in the piezoelectric power generation box in a shaft connection mode.
In one embodiment, the frame is an L-shaped structure.
The invention has the following beneficial effects:
1. the gravitational potential energy of the heavy object is utilized to drive the chain wheel to rotate, and then the plurality of moving electrodes are driven to vibrate for power generation.
2. A plurality of cantilever beam blades are arranged on the inner ring, so that the output power density is improved.
3. Piezoelectric sheets are uniformly arranged on the upper surface and the lower surface of the cantilever beam, and the deformation of the cantilever beam is fully utilized to generate electricity according to the piezoelectric effect.
4. The ratchet mechanism is skillfully used, and the ratchet mechanisms with different load standards are adopted, so that power can be generated when large and small cargoes are carried.
Drawings
FIG. 1 is a schematic diagram of the structure and operation of a power generation facility for recovering gravitational potential energy according to an embodiment of the present invention;
FIG. 2 is a schematic view of the internal structure of the piezoelectric power generation box;
FIG. 3 is an exploded view of a piezoelectric power generation device;
FIG. 4 is a schematic structural view of the outer ring;
FIG. 5 is a schematic diagram of the operation of the ratchet mechanism in conjunction with cargo carrying;
FIG. 6 is a block diagram and exploded schematic view of a piezoelectric assembly;
fig. 7 is a schematic diagram of the operation of the piezoelectric element.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 7, the invention discloses a power generation device for recovering gravitational potential energy, which comprises a frame 10, a motor 11, a lifting shaft 12, a ratchet mechanism 20 and a piezoelectric power generation box, wherein the frame 10 is in an L-shaped structure. The motor 11, the lifting shaft 12 and the ratchet mechanism 20 are connected in sequence through a shaft connection mode, the lifting shaft 12 is wound with a rope 13 (the rope is used for carrying cargos 14), the motor 11 and the piezoelectric generating box are fixed on the frame 10, and two ends of the lifting shaft 12 are provided with a supporting structure fixed on the frame 10 (for the convenience of explaining the working principle, the supporting structure is not shown in the figure, and for example, a support and a bearing can be adopted for supporting).
The ratchet mechanism 20 is connected to the sprocket 31 of the piezoelectric power generating device 30 at the uppermost position inside the piezoelectric power generating box by means of a shaft connection (as indicated by reference numeral 35 in fig. 2), because the link chain 33 can more reliably rotate the sprocket 31 under the action of gravity. The sprockets 31 of the piezoelectric power generators 30 are interlocked with each other by an interlocking chain 33.
The piezoelectric generating box comprises 5 groups of piezoelectric generating devices 30, a box body 32 and a linkage chain 33, wherein the piezoelectric generating devices 30 are arranged inside the box body 32. The piezoelectric power generation device 30 includes a sprocket 31, an inner ring 4, an outer ring 3, and a piezoelectric power generation set.
The outer ring 3 is a cylindrical structure with one open end, the other end is a closed end and is fixed inside the box body 32, and an inner column 5 is arranged at the center of the inner wall of the closed end of the outer ring 3. Magnet sets are embedded on the inner surface of the side wall of the outer ring 3 and the surface of the inner column 5. In an embodiment, the inner surface of the sidewall of the outer ring 3 is uniformly distributed with 6 sets of magnets at 60 ° intervals along the circumferential direction, wherein each set of magnets is provided with three magnets. Interior post 5 is on the surface along circumference interval 60 degrees central angle evenly distributed 6 groups of magnet group, and every group magnet group all has 3 magnets.
The inner ring 4 is in a thin-walled cylindrical shape, one end of the inner ring 4 is fixed to the sprocket 31 and is concentric with the sprocket, and the other end of the inner ring 4 is matched with the outer ring 3 through a bearing 34 so that the outer ring 3 and the inner ring 4 can rotate relatively. 6 groups of rectangular grooves 7 are uniformly formed in the circumferential direction of the inner ring 4 (the interval central angle is 60 degrees), each group has 3 rectangular grooves 7 arranged in the radial direction of the inner ring 4, and correspondingly, 3 piezoelectric assemblies 8 arranged in the radial direction form a piezoelectric power generation group. One piezoelectric assembly 8 forms fixed connection fit with the inner ring 4 through the rectangular groove 7, namely the middle part of the power generation assembly 8 forms interference fit with the rectangular groove 7. The piezoelectric assemblies 8 correspond to the rectangular grooves 7 one by one, and 6 groups of piezoelectric assemblies 8, namely 18 piezoelectric assemblies, are arranged on the inner ring 4.
The piezoelectric assembly 8 includes a cantilever beam 81 (brass foil may be used), 4 piezoelectric patches 82 and two magnets 83. The cantilever beam 81 is a brass sheet with the thickness of 0.4mm, the middle part of the cantilever beam 81 is fixedly connected with the rectangular groove 7 of the inner ring 4, two free ends of the cantilever beam 81 are respectively provided with a magnet 83, and 4 piezoelectric sheets 82 are symmetrically adhered to the upper surface and the lower surface of the cantilever beam 81 along the middle position.
The operation principle of the power generation equipment described in the present invention (fig. 5 is only a requirement of the schematic operation principle, and shows the rope 13 and the cargo 14 at the same time, and does not show how the rope 13 and the cargo 14 are assembled) is as follows. When the motor 11 rotates the lifting shaft 12 to lift the goods 14 carried by the rope 13, the inner ratchet ring 62 of the ratchet mechanism 20 moves counterclockwise, and the ratchet dial 63 does not function. When the motor 11 drives the lifting shaft 12 to rotate so as to lower the goods 14 carried by the rope 13, the ratchet inner ring 62 of the ratchet mechanism 20 moves clockwise, the ratchet plectrum 63 drives the outer ratchet 61 to rotate so as to drive the chain wheel 31 of the uppermost piezoelectric power generation device 30 in the piezoelectric power generation box to rotate, and further drive the linkage chain 33 to drive, and the linkage chain 33 drives the chain wheels 31 of other piezoelectric power generation devices 30 to rotate. Finally, the inner ring 4 and the outer ring 3 of each piezoelectric power generation device 30 are relatively rotated. The piezoelectric generator set mounted on the inner ring 4 has a small clearance with the inner surface of the side wall of the outer ring 3 and the piezoelectric generator set and the surface of the inner column 5. When the inner ring 4 and the outer ring 3 rotate relatively, the magnets 83 at the two ends of the cantilever beam 81 interact with the magnets on the inner surface of the side wall of the outer ring 3 and the magnets on the inner column 5, respectively. Under the action of magnetic force, the cantilever beam 81 deforms, so that the piezoelectric sheet 82 attached to the surface of the cantilever beam 81 deforms accordingly. According to the positive piezoelectric effect, the piezoelectric sheet under pressure (or tension) outputs electric energy.
The specific vibration power generation process of the piezoelectric assembly 8 is as follows. When the inner ring 4 and the outer ring 3 rotate relatively, the magnet 84 on the outer ring 3 vibrates up and down relative to the magnet 83 of the piezoelectric assembly 8. When magnet 84 on collar 3 approaches magnet 83 on cantilever beam 81, a force is generated between the magnets which urges cantilever beam 81 to bend. As the magnet 83 continues relative movement away from the cantilever beam, the force is reduced and the cantilever beam 81 is released. Cantilever beam 81 after being released is free to vibrate at its natural frequency. The frequency of rotation of the lift shaft 12 is typically low, but during rotation of the lift shaft 12, the cantilever beam 81 is free to oscillate at its natural frequency, which is much higher than the frequency of rotation of the lift shaft 12, each time it is pulled by the magnets 84 on the outer race 3. Therefore, the frequency is improved, and finally the output power and the energy conversion efficiency of the piezoelectric power generation device can be improved.
The application of the piezoelectric technology which can be really utilized in China is not many, so that a device suitable for piezoelectric power generation of gravitational potential energy is deeply researched and developed, the piezoelectric effect can be effectively utilized to generate power, and more reasonable and effective utilization of resources can be realized.
It is to be understood that the exemplary embodiments described herein are illustrative and not restrictive. Although one or more embodiments of the present invention have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.
Claims (10)
1. The power generation equipment for recovering the gravitational potential energy is characterized by comprising a rack, a motor, a lifting shaft, a ratchet mechanism and a piezoelectric power generation box, wherein the motor, the lifting shaft and the ratchet mechanism are sequentially connected in a shaft connection mode, a rope is wound on the lifting shaft, the motor and the piezoelectric power generation box are fixed on the rack, and two ends of the lifting shaft are provided with supporting structures fixed on the rack;
the piezoelectric power generation box comprises at least two groups of piezoelectric power generation devices, a box body and a linkage chain, wherein the piezoelectric power generation devices are arranged in the box body; the piezoelectric power generation device comprises a chain wheel, an inner ring, an outer ring and a piezoelectric power generation set; wherein the content of the first and second substances,
the outer ring is of a cylindrical structure with one open end, and the other end of the outer ring is a closed end and is fixed in the box body; an inner column is arranged at the center of the inner wall of the closed end of the outer ring; at least two groups of magnets are uniformly arranged on the inner surface of the side wall of the outer ring along the circumferential direction, and at least two groups of magnets are uniformly arranged on the surface of the inner column along the circumferential direction;
the inner ring is cylindrical, one end of the inner ring is fixed to the chain wheel and is concentric with the chain wheel, and the other end of the inner ring is matched with the outer ring through a bearing so that the outer ring and the inner ring can rotate relatively; the inner ring is provided with at least two groups of piezoelectric power generation sets along the circumferential direction, each piezoelectric power generation set comprises a piezoelectric component, each piezoelectric component is fixedly connected to the inner ring, one end of each piezoelectric component faces the inner surface of the side wall of the outer ring, and the other end of each piezoelectric component faces the inner column;
the ratchet mechanism is connected to the chain wheel of one of the piezoelectric power generation devices in the piezoelectric power generation box in a shaft connection mode, and the chain wheels of the piezoelectric power generation devices are linked through the linkage chain.
2. The power generation equipment for recovering gravitational potential energy of claim 1, wherein the piezoelectric component comprises a cantilever beam, a piezoelectric sheet and two magnets, the piezoelectric sheet is attached to the cantilever beam, and the two magnets are respectively fixed at two ends of the cantilever beam.
3. The power generation equipment for recovering gravitational potential energy of claim 2, wherein the inner ring has a rectangular groove, and the cantilever beam of the piezoelectric assembly has a middle position fixedly connected to the rectangular groove of the inner ring.
4. The power generation equipment for recycling gravitational potential energy of claim 3, wherein the number of the piezoelectric sheets of the piezoelectric component is 4, and 4 piezoelectric sheets are symmetrically attached to the upper surface and the lower surface of the cantilever beam along the middle position of the cantilever beam.
5. The power generation apparatus for recovering gravitational potential energy of claim 4, wherein the magnets of the piezoelectric assembly are of the same polarity at the end faces opposite to the magnets of the outer ring.
6. The power generation rig for recovering gravitational potential energy of claim 1, wherein each said piezoelectric power generation stack comprises three said piezoelectric elements, said three piezoelectric elements being disposed radially of said inner ring.
7. The power generation apparatus for recovering gravitational potential energy of claim 6, wherein each set of magnets on the outer ring comprises three magnets.
8. The power generation apparatus for recovering gravitational potential energy of claim 1, wherein there are three sets of magnets on the inner surface of the side wall of the outer ring and three sets of magnets on the surface of the inner post.
9. The power generation facility of claim 1, wherein the ratchet mechanism is connected by a shaft to the sprocket of the uppermost piezoelectric power generator inside the piezoelectric power generator box.
10. The power generation facility of claim 1, wherein the frame is an L-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028339.2A CN112737410A (en) | 2021-01-11 | 2021-01-11 | Power generation equipment for recovering gravitational potential energy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110028339.2A CN112737410A (en) | 2021-01-11 | 2021-01-11 | Power generation equipment for recovering gravitational potential energy |
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| CN112737410A true CN112737410A (en) | 2021-04-30 |
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| CN202110028339.2A Pending CN112737410A (en) | 2021-01-11 | 2021-01-11 | Power generation equipment for recovering gravitational potential energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212995A (en) * | 2022-07-21 | 2022-10-21 | 陕西百固建材有限公司 | Building clout crushing and sorting device |
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2021
- 2021-01-11 CN CN202110028339.2A patent/CN112737410A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115212995A (en) * | 2022-07-21 | 2022-10-21 | 陕西百固建材有限公司 | Building clout crushing and sorting device |
| CN115212995B (en) * | 2022-07-21 | 2024-02-13 | 陕西百固建材有限公司 | Broken sorting unit of building clout |
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