CN114427586B - Railway roadbed dynamic energy harvesting vibration damper based on carbon neutralization concept - Google Patents
Railway roadbed dynamic energy harvesting vibration damper based on carbon neutralization concept Download PDFInfo
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- CN114427586B CN114427586B CN202210064914.9A CN202210064914A CN114427586B CN 114427586 B CN114427586 B CN 114427586B CN 202210064914 A CN202210064914 A CN 202210064914A CN 114427586 B CN114427586 B CN 114427586B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 13
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 13
- 238000003306 harvesting Methods 0.000 title claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000013016 damping Methods 0.000 claims abstract description 21
- 230000003321 amplification Effects 0.000 claims abstract description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 17
- 239000003822 epoxy resin Substances 0.000 claims abstract description 6
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 7
- 229910001369 Brass Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000003860 storage Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- 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
Abstract
The invention discloses a railway roadbed dynamic loading energy harvesting and vibration damping device based on a carbon neutralization concept, which comprises a cake-shaped stressed steel shell, a primary force amplification structure, a secondary force amplification structure and a piezoelectric vibration damping stacking structure. The invention utilizes the piezoelectric effect to efficiently convert mechanical energy generated by the running of a train into electric energy for storage, and supplies power to equipment along the railway, in particular to a low-power sensor, thereby solving the problems that wires in remote mountainous areas are difficult to erect and the like; the piezoelectric vibration damping stacking structure is compressed by the prestressed spring to prevent the piezoelectric vibration damping stacking structure from falling off; the invention utilizes the spherical force transmission structure to uniformly transmit the upper load to the lower structure, thereby preventing the structure from being damaged due to uneven stress; according to the invention, the power amplification structure and the multilayer PEH stacking structure are added into the device, so that the efficiency of the piezoelectric generation is improved; the device is sealed by epoxy resin, the spherical force transmission structure is arranged in the device, the device is not easy to damage in a complex stress environment of a railway roadbed, and the service life is long.
Description
Technical Field
The invention relates to the technical field of railway piezoelectric conversion, in particular to a railway roadbed dynamic energy harvesting vibration damper based on a carbon neutralization concept.
Background
Nowadays, the piezoelectric conversion technology is continuously mature, but few people apply the piezoelectric conversion technology to railways, railways in China develop rapidly, great mechanical energy generated by train operation is mostly consumed in a roadbed in a heat energy mode, the energy cannot be well utilized, and the generated heat energy even can damage the roadbed.
The conventional piezoelectric device is required to be deeply buried in a railway subgrade, so that the conventional piezoelectric device is subjected to huge compressive stress, is usually damaged in a complex stress state in the use process and cannot be in service for a long time.
Disclosure of Invention
In order to solve the technical problems, the invention designs a railway roadbed dynamic energy harvesting and vibration reduction device based on a carbon neutralization concept.
The invention adopts the following technical scheme:
a railway roadbed dynamic energy harvesting and vibration damping device based on a carbon neutralization concept comprises a cake-shaped stress steel shell, a primary force amplification structure, a secondary force amplification structure and a piezoelectric vibration damping stacking structure, wherein a top cover plate is arranged at the upper opening end of the cake-shaped stress steel shell, the top cover plate is abutted against the inner side of the opening end of the cake-shaped stress steel shell and is limited and moves up and down along the position of the opening, the primary force amplification structure is embedded and fixed on the top surface of the top cover plate of the cake-shaped stress steel shell, the secondary force amplification structure comprises a spherical force transmission structure, an upper cover plate, force transmission plates, bearing plates and a support frame, sliding grooves are formed in the support frame, bearing plates capable of sliding along the sliding grooves are arranged in the sliding grooves, piezoelectric vibration damping stacking structures are correspondingly arranged in the sliding direction of the bearing plates in the sliding grooves, the bearing plates are abutted against the piezoelectric vibration damping stacking structures and generate electric energy, force transmission plates are correspondingly arranged on the upper cover plate and are hinged with the corresponding bearing plates, the upper cover plate is connected with the spherical force transmission plates through the spherical force transmission structures, and the spherical force transmission structures (6) are connected with the bottom of the top cover plate.
Preferably, a cross sliding groove is formed in the supporting seat frame, bearing plates capable of sliding along the cross sliding groove are arranged in the cross direction in the cross sliding groove respectively, piezoelectric vibration damping stacking structures are correspondingly arranged in the cross direction in the cross sliding groove respectively, each bearing plate abuts against the piezoelectric vibration damping stacking structures and is arranged, force transfer plates are arranged on the upper cover plate correspondingly and respectively, and the upper cover plate is hinged to the corresponding bearing plates through the force transfer plates.
Preferably, the upper cover plate is provided with a central connecting rod, the support frame is correspondingly provided with a guide hole, and the central connecting rod moves along the guide hole.
Preferably, a pre-stress spring is arranged between the upper cover plate in the upper cover plate and the spherical force transmission structure.
Preferably, the spherical force transmission structure comprises a transmission block with a spherical surface arranged at the bottom in a protruding mode and a transmission block with a spherical surface arranged at the top in a corresponding concave mode, the transmission block is connected with the top cover plate in an inserting mode, and the transmission block is connected with the upper cover plate in an inserting mode.
Preferably, the primary force amplifying structure is a disc made of steel, and the bottom of the disc is provided with an annular bulge which is embedded in a groove of a cover plate at the top of the cake-shaped stressed steel shell.
Preferably, the piezoelectric vibration damping stacked structure is composed of four piezoelectric vibrators with the same shape and size, each piezoelectric vibrator is composed of two brass metal end caps, two ceramic protection layers, five electrode layer coatings and four piezoelectric ceramics, layers of different materials are bonded together through a strong adhesive, and the four electrode layer coatings are respectively connected to two ends of a collecting circuit through conducting wires.
Preferably, epoxy resin is arranged between the top cover plate and the cake-shaped stressed steel shell.
The beneficial effects of the invention are: (1) The invention utilizes the piezoelectric effect to efficiently convert mechanical energy generated by the operation of the train into electric energy for storage, and supplies power to equipment along the railway, in particular to a low-power sensor, thereby solving the problems that wires in remote mountainous areas are difficult to erect and the like; (2) The piezoelectric vibration reduction stacking structure is compressed through the prestressed spring, so that the piezoelectric vibration reduction stacking structure is prevented from falling off; (3) The invention utilizes the spherical force transmission structure to uniformly transmit the upper load to the lower structure, thereby preventing the structure from being damaged due to uneven stress; (4) The power amplification structure and the multilayer PEH stacking structure are added into the device, so that the efficiency of the piezoelectric generation is improved; (5) The device is sealed by epoxy resin, the spherical force transmission structure is arranged in the device, the device is not easy to damage in a complex stress environment of a railway roadbed, and the service life is long.
Drawings
FIG. 1 is an elevational, cross-sectional view of the present invention;
FIG. 2 is an enlarged view of a portion of the top of the apparatus of the present invention;
FIG. 3 is a top view of an internal structure of the present invention;
FIG. 4 is a schematic view of a top cover plate according to the present invention;
FIG. 5 is a schematic view of an alternative angle of the top cover plate of the present invention;
FIG. 6 is a schematic diagram of a first force amplifying structure according to the present invention;
FIG. 7 is a diagram illustrating an effect of the first force amplifying structure and the top cover plate after being fastened together according to the present invention;
FIG. 8 is a schematic diagram of a two-stage vertically enlarged structure according to the present invention;
FIG. 9 is an elevational, cross-sectional view of a pedestal frame according to the present invention;
FIG. 10 is a top view of the pedestal frame of the present invention;
FIG. 11 is a bottom view of the upper deck of the present invention;
FIG. 12 is an elevational view in cross section of the upper cover plate of the present invention;
fig. 13 is a schematic structural view of a bearing plate according to the present invention;
FIG. 14 is a top view of FIG. 13;
FIG. 15 is a schematic view of a construction of the force transfer plate of the present invention;
FIG. 16 is a top view of FIG. 15;
FIG. 17 is a schematic diagram of a piezoelectric vibration damping stack according to the present invention;
in the figure: 1. the device comprises a cake-shaped stressed steel shell, 2 parts of a primary force amplifying structure, 3 parts of a secondary force amplifying structure, 4 parts of a piezoelectric vibration damping stacking structure, 5 parts of epoxy resin, 6 parts of a spherical force transmission structure, 7 parts of an upper cover plate, 8 parts of a force transmission plate, 9 parts of a bearing plate, 10 parts of a supporting seat frame, 11 parts of a pre-stressed spring, 12 parts of a central connecting rod, 13 parts of a brass metal end cap, 14 parts of a ceramic protective layer, 15 parts of an electrode layer coating, 16 parts of piezoelectric ceramic.
Detailed Description
The technical scheme of the invention is further described in detail by the following specific embodiments in combination with the attached drawings:
the embodiment is as follows: as shown in fig. 1-17, a railway roadbed dynamic load capture energy vibration damper based on carbon neutralization concept comprises a cake-shaped stress steel shell 1, a primary force amplification structure 2, a secondary force amplification structure 3 and a piezoelectric vibration damping stacking structure 4, wherein a top cover plate is arranged at the upper opening end of the cake-shaped stress steel shell, the top cover plate is abutted against the inner side of the opening end of the cake-shaped stress steel shell for limiting and moves up and down along the position of the opening, the primary force amplification structure is embedded and fixed on the top surface of the top cover plate of the cake-shaped stress steel shell, the secondary force amplification structure comprises a spherical force transmission structure 6, an upper cover plate 7, a force transmission plate 8, a pressure bearing plate 9 and a support frame 10, a cross chute is arranged on the support frame, bearing plates capable of sliding along the cross chute are respectively arranged in the cross direction in the cross chute, the piezoelectric vibration damping stacking structure is respectively arranged in the cross direction in the cross chute in correspondence to the pressure plate, each bearing plate is respectively abutted against the piezoelectric vibration damping stacking structure, a force transmission plate is respectively arranged on the upper cover plate in correspondence to the upper cover plate, and the upper cover plate is hinged with the corresponding pressure bearing plate through each force transmission plate. All parts are produced independently and finally assembled into a whole, and large-scale production and construction are easy to realize.
The thickness of the device can be better controlled by the cake-shaped stress steel shell, the influence on the railway roadbed is reduced, the cake-shaped structure can better adjust the condition that the stress of the stacked structure is uneven due to processing, and the piezoelectric stacked structure can work in a cooperative mode. Under the load effect of the complicated load of external environment and the conduction of inside piezoelectricity stacked structure, the pie structure can evenly bear each item load, prevents that stress concentration from leading to the fracture of structure itself.
The upper cover plate is provided with a central connecting rod 12, the support frame is correspondingly provided with a guide hole, and the central connecting rod moves along the guide hole. The supporting seat frame and the central connecting rod ensure that all parts of the structure cannot generate large deviation under the load action, and the stability is improved.
A prestressed spring 11 is arranged between the upper cover plate in the upper cover plate and the spherical force transmission structure. Under the condition that the device is not stressed, the piezoelectric vibration reduction stacking structure is not easy to fall off under the pressure of the bearing plate, and the prestress spring is added to ensure that the bearing plate has certain pressure on the piezoelectric vibration reduction stacking structure in an initial state.
The spherical force transmission structure comprises a transmission block with a spherical surface arranged at the bottom in a protruding mode and a transmission block with a spherical surface arranged at the top in a corresponding concave mode, the transmission block is connected with the top cover plate in an inserted mode, and the transmission block is connected with the upper cover plate in an inserted mode. The upper load borne by the cake-shaped stress steel shell uniformly transmits force to the upper cover plate through the spherical force transmission structure.
The primary force amplifying structure is a disc made of steel, and an annular bulge is arranged at the bottom of the disc and is embedded in a groove of a cover plate at the top of the cake-shaped stressed steel shell. The train runs through the comparatively dispersion of the inside impact load of back road bed, and the first power amplification structure makes the structure obtain bigger power through enlarging the collection area.
The piezoelectric vibration reduction stacking structure is composed of four piezoelectric vibrators with the same shape and size, each piezoelectric vibrator is composed of two brass metal end caps 13, two ceramic protection layers 14, five electrode layer coatings 15 and four piezoelectric ceramics 16, different material layers are bonded together through a strong adhesive, and the four electrode layer coatings are respectively connected to two ends of a collecting circuit through leads.
And epoxy resin 5 is arranged between the top cover plate and the cake-shaped stressed steel shell. Prevent that external materials such as rainwater from getting into structure internal damage structure influence generating efficiency, make it can stabilize work in rainy season, improve life.
The above-described embodiment is a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. A railway roadbed dynamic energy capture and vibration reduction device based on a carbon neutralization concept is characterized by comprising a cake-shaped stress steel shell (1), a primary force amplification structure (2), a secondary force amplification structure (3) and a piezoelectric vibration reduction stacking structure (4), wherein a top cover plate is arranged at the upper opening end of the cake-shaped stress steel shell (1), the top cover plate is abutted against the inner side of the opening end of the cake-shaped stress steel shell (1) for limiting and moves up and down along the position of the opening, the primary force amplification structure (2) is fixedly embedded on the top surface of the top cover plate of the cake-shaped stress steel shell (1), the secondary force amplification structure (3) comprises a spherical force transmission structure (6), an upper cover plate (7), a force transmission plate (8), a bearing plate (9) and a support frame (10), a chute is arranged on the support frame (10), a bearing plate (9) capable of sliding along the chute is arranged in the chute, the piezoelectric vibration reduction stacking structure (4) is correspondingly arranged in the sliding direction of the bearing plate (9) in the chute, the piezoelectric vibration reduction stacking structure (9), the piezoelectric vibration reduction stacking structure (4) is respectively arranged in the sliding direction of the support frame (9), the piezoelectric vibration reduction plate (9) is correspondingly arranged on the piezoelectric vibration reduction stacking structure, the upper bearing plate (4) and is connected with the upper cover plate (7) through the corresponding to the spherical force transmission plate (8), the upper cover plate (7) respectively, the spherical force transmission plate (8) and the spherical force transmission plate (7) respectively, the spherical force transmission plate (9), the spherical force transmission plate (7) respectively, the upper cover plate (9), the spherical force transmission structure (6) is connected to the bottom of the top cover plate; the spherical force transmission structure (6) comprises a transmission block with a spherical surface arranged at the bottom in a protruding mode and a transmission block with a spherical surface arranged at the top in a corresponding concave mode, the transmission block is connected with the top cover plate in an inserting mode, and the transmission block is connected with the upper cover plate (7) in an inserting mode; the primary force amplifying structure (2) is a disc made of steel, and an annular bulge is arranged at the bottom of the disc and is embedded in a groove of a cover plate at the top of the cake-shaped stressed steel shell (1).
2. The railway roadbed dynamic energy harvesting and vibration damping device based on the carbon neutralization concept is characterized in that a cross sliding groove is formed in the supporting seat frame (10), bearing plates (9) capable of sliding along the cross sliding groove are arranged in the cross direction in the cross sliding groove respectively, piezoelectric vibration attenuation stacking structures (4) are correspondingly arranged in the cross direction in the cross sliding groove respectively, each bearing plate (9) is arranged in a mode of abutting against the piezoelectric vibration attenuation stacking structures (4), force transmission plates (8) are arranged on the upper cover plate (7) corresponding to the bearing plates (9), and the upper cover plate (7) is hinged to the corresponding bearing plate (9) through each force transmission plate (8).
3. The railway roadbed dynamic energy harvesting and vibration damping device based on the carbon neutralization concept is characterized in that a center connecting rod (12) is arranged on the upper cover plate (7), a guide hole is correspondingly formed in the support frame (10), and the center connecting rod (12) moves along the guide hole.
4. The railway roadbed mobile energy harvesting and vibration reduction device based on the carbon neutralization concept according to the claim 1, wherein a prestressed spring (11) is arranged between the upper cover plate (7) and the spherical force transmission structure (6) in the upper cover plate (7).
5. The railway roadbed kinetic energy harvesting and vibration damping device based on the carbon neutralization concept is characterized in that the piezoelectric vibration damping stacked structure (4) is composed of four piezoelectric vibrators with the same shape and size, each piezoelectric vibrator is composed of two brass metal end caps (13), two ceramic protective layers (14), five electrode layer coatings (15) and four piezoelectric ceramics (16), layers of different materials are bonded together through a strong adhesive, and the four electrode layer coatings (15) are respectively connected to two ends of a collecting circuit through leads.
6. The railway roadbed dynamic energy harvesting and vibration damping device based on the carbon neutralization concept is characterized in that epoxy resin (5) is arranged between the top cover plate and the cake-shaped stressed steel shell (1).
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| CN202210064914.9A CN114427586B (en) | 2022-01-20 | 2022-01-20 | Railway roadbed dynamic energy harvesting vibration damper based on carbon neutralization concept |
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| CN202210064914.9A CN114427586B (en) | 2022-01-20 | 2022-01-20 | Railway roadbed dynamic energy harvesting vibration damper based on carbon neutralization concept |
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| CN114427586B true CN114427586B (en) | 2022-10-14 |
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