CN112681030A - Composite multilayer piezoelectric array energy storage base plate for rail transit - Google Patents
Composite multilayer piezoelectric array energy storage base plate for rail transit Download PDFInfo
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- CN112681030A CN112681030A CN202011483876.8A CN202011483876A CN112681030A CN 112681030 A CN112681030 A CN 112681030A CN 202011483876 A CN202011483876 A CN 202011483876A CN 112681030 A CN112681030 A CN 112681030A
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- waterproof elastic
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Abstract
The invention discloses a composite multilayer piezoelectric array energy storage base plate for rail transit, which comprises a base plate and a sleeper, wherein the base plate is arranged above the sleeper and comprises a waterproof elastic base plate, a piezoelectric vibration energy storage array layer and a bottom layer, the waterproof elastic base plate is laid at the bottom of a rail iron base plate, the waterproof elastic base plate is made of thermoplastic foaming polyurethane fiber materials, a convex block is arranged on the upper surface of the waterproof elastic base plate, the convex block on the upper surface of the waterproof elastic base plate can be any one of square and round, the piezoelectric vibration energy storage array layer is embedded into the convex block on the upper surface of the waterproof elastic base plate, the convex block on the upper surface of the waterproof elastic base plate is arranged below a fastener iron gasket, the bottom layer is arranged at the bottom of the waterproof elastic base plate, and the bottom layer is arranged as a. The composite multilayer piezoelectric array energy storage base plate for rail transit has a three-layer base plate structure, the material is polyester, for example, fasteners on two sides of the rail are convenient to install and disassemble.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a composite multilayer piezoelectric array energy storage base plate for rail transit.
Background
Rail transit refers to a type of vehicle or transportation system in which operating vehicles need to travel on a particular rail. The most typical rail transit is a railway system consisting of conventional trains and standard railways. With the diversified development of train and railway technologies, rail transit is more and more types, and is not only distributed in long-distance land transportation, but also widely applied to medium-short distance urban public transportation. The rail transit backing plate is a piezoelectric power generation damping and energy storage device used in rail transit. But the prior art is to bury a piezoelectricity collating unit in the sleeper, and dedicated sleeper, unable dismantlement, inconvenient later maintenance.
Disclosure of Invention
The invention aims to provide a composite multilayer piezoelectric array energy storage base plate for rail transit, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a compound multilayer piezoelectric array energy storage backing plate of track traffic, includes backing plate and sleeper, the sleeper top is settled there is the backing plate, and the backing plate includes waterproof elastic backing plate, piezoelectricity vibration energy storage array layer and bottom, waterproof elastic backing plate lays in rail iron tie plate bottom, and waterproof elastic backing plate material sets up to thermoplasticity foaming polyurethane fiber material, waterproof elastic backing plate upper surface is provided with the lug, and the lug of waterproof elastic backing plate upper surface sets up to any one of square and circular all can, the inside embedding piezoelectricity vibration energy storage array layer of lug of waterproof elastic backing plate upper surface, and the lug of waterproof elastic backing plate upper surface installs below fastener iron shim, waterproof elastic backing plate bottom is provided with the bottom, the bottom sets up to power supply network layer, and the bottom includes tertiary management subsystem from the bottom up, is single backing plate power management system respectively, The system comprises an area base plate power supply management unit and a full-line base plate power supply management system.
Preferably, a height-adjusting cushion plate is arranged between the cushion plate and the sleeper.
Preferably, the total charging amount of the whole pad plate is as follows:
where F is the stress of the elastic bump k, Δ l is the electrical displacement, E is the modulus of elasticity, A is the area of the bumps, and n is the number of bumps on the pad.
Preferably, the whole outer side wrapping material of waterproof elastic backing plate, piezoelectric vibration energy storage array layer and bottom layer sets up to line elastic material, and from last to down according to the order of piezoelectric vibration energy storage array layer, waterproof elastic backing plate and bottom layer.
Preferably, the convex blocks on the upper surface of the waterproof elastic backing plate are distributed in an array, and the convex areas on the waterproof elastic backing plate are the same.
Preferably, the piezoelectric vibration energy storage array layer comprises a piezoelectric network device and a super capacitor charging module array.
Preferably, the single pad power management system of the bottom layer comprises an electric energy management module, a charging and discharging management module and an instruction for executing the power management unit.
Preferably, the individual mats in the underlying regional mat power management unit are independently controlled structures.
Preferably, the all-wire pad power management system of the bottom layer comprises a power supply unit and a self-checking unit.
Preferably, a rail is arranged above the sleeper, the left side and the right side of the rail are pressed on the gauge baffle through elastic strips, a spiral spike penetrates through the gauge baffle, the bottom of the spiral spike is connected with an embedded sleeve, the embedded sleeve is fixed inside the sleeper, and a flat gasket is arranged between the spiral spike and the gauge baffle.
Compared with the prior art, the invention has the beneficial effects that: 1) the three-layer backing plate structure is made of polyester, for example, the fasteners on the two sides of the rail are convenient to mount and dismount; 2) a new piezoelectric calculation formula is provided, and a super capacitor is charged instead of a battery; 3) the power supply network is classified into 3 grades.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic cross-sectional view of the backing plate of the present invention;
fig. 3 is a charging circuit diagram of a single piezoelectric wafer.
In the figure: 1. the device comprises a flat gasket, 2, elastic strips, 3, spiral spikes, 4, a backing plate, 41, a waterproof elastic backing plate, 42, a piezoelectric vibration energy storage array layer, 43, a bottom layer, 5, rails, 6, a pre-buried sleeve, 7, sleepers, 8, a gauge baffle, 9 and a heightening backing plate.
The parts of the invention are available both commercially and in private customizations.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
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 only a part of the embodiments of the present invention, and not all of the embodiments. 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. 1-3, an embodiment of a composite multi-layer piezoelectric array energy storage pad for rail transit according to the present invention: a composite multilayer piezoelectric array energy storage backing plate for rail transit comprises a flat gasket 1, elastic strips 2, spiral spikes 3, a backing plate 4, a waterproof elastic backing plate 41, a piezoelectric vibration energy storage array layer 42, a bottom layer 43, a rail 5, an embedded sleeve 6, a sleeper 7, a gauge baffle 8 and a heightening backing plate 9, wherein the backing plate 4 is arranged above the sleeper 7, the backing plate 4 comprises the waterproof elastic backing plate 41, the piezoelectric vibration energy storage array layer 42 and the bottom layer 43, the waterproof elastic backing plate 41 is laid at the bottom of the rail 5 iron backing plate, and the waterproof elastic backing plate 41 is made of thermoplastic foaming polyurethane fiber materials;
the upper surface of the waterproof elastic backing plate 41 is provided with a convex block, the convex block on the upper surface of the waterproof elastic backing plate 41 can be set to be any one of square and round, the piezoelectric vibration energy storage array layer 42 is embedded in the convex block on the upper surface of the waterproof elastic backing plate 41, and the convex block on the upper surface of the waterproof elastic backing plate 41 is arranged below the fastener iron gasket;
the elastic backing plate is subjected to the vibration pressure when a train passes through, the structure of the elastic backing plate deforms in a mode of vibration and mode strain energy is stored. Each elastic bulge independently receives dynamic excitation when a train passes by, responds to external dynamic load, converts vibration into electric energy after piezoelectric conversion, and the strain energy is a time variable. The elastic convex block k of the base plate corresponds to the j-th order mode vibration mode
Strain energy U ofjComprises the following steps:
EI is the bending stiffness, E is the elastic modulus, I is the moment of inertia, and k is the coordinate along the direction of the base plate;
the local energy of each raised region of the elastic pad is:
the proportion of the local convex elastic blocks d in the strain energy of the whole base plate is as follows:
the piezoelectric vibration energy storage array layer uses piezoelectric elements to form an array, converts the vibration of a train passing through the array into electric energy to charge a related super capacitor array, and uses a power management unit to manage charging and discharging so as to achieve the functions of energy conversion and energy storage.
The summation formula for the power conversion calculation is as follows,
the backing plate is a linear elastic material. According to the conservation of energy, the strain energy accumulated in the elastic pad is numerically equal to the work done by the external force, namely:
f is the stress of the elastic bump k, Δ l is the electrical displacement, E is the elastic modulus, A is the area of the bump, and the areas of the bumps on the pad are the same.
The piezoelectric field in the pad protrusions is:
the output of the piezoelectric bulge is used for charging the super capacitor, and the output voltage is as follows:
d is the thickness of the piezoelectric wafer, and the relationship between the charge Q and the electric displacement of the super capacitor by a single pad bump is as follows:
thus, the amount of charge of a single gasket projection
The super capacitor that charges is parallelly connected together, is the total amount of charging of monoblock backing plate, and the total amount is:
wherein n is the number of the bulges on the base plate;
the bottom of the waterproof elastic backing plate 41 is provided with a bottom layer 43, the bottom layer 43 is arranged as a power supply network layer, and the bottom layer 43 comprises three levels of management subsystems from bottom to top, namely a single backing plate power management system, an area backing plate power management unit and a full-line backing plate power management system;
the overall outer wrapping material of the waterproof elastic backing plate 41, the piezoelectric vibration energy storage array layer 42 and the bottom layer 43 is set to be linear elastic material, and the waterproof elastic backing plate 41 and the bottom layer 43 are arranged in sequence from top to bottom; the convex blocks on the upper surface of the waterproof elastic backing plate 41 are distributed in an array, and the convex areas on the waterproof elastic backing plate 41 are the same;
the piezoelectric vibration energy storage array layer 42 comprises a piezoelectric network device and a super capacitor charging module array, is embedded into the upper waterproof polyester base plate, collects vibration energy when a train passes through, converts the vibration energy into electric energy, and manages a charging and discharging process by the power management unit;
the single base plate power management system of the bottom layer 43 comprises a management electric energy management module, a charge and discharge management module and an execution power management unit, wherein the management electric energy management module manages the electric energy of each base plate; the single base plate 4 in the regional base plate power supply management unit of the bottom layer 43 is an independent control structure, the regional base plate power supply management unit connects partial base plates along the track into a power supply network, supplies power to the outside, and circularly schedules the single base plate in the region to open or close the power output; the all-line base plate power management system of the bottom layer 43 comprises a power supply unit and a self-checking unit, and outputs electric energy for various internet of things devices along the rail transit line for the devices to use. The self-checking unit remotely transmits the working state of the self-checking unit so as to facilitate the management of power supply maintenance personnel;
a height-adjusting base plate 9 is arranged between the base plate 4 and the sleeper 7; a rail 5 is arranged above the sleeper 7, the left side and the right side of the rail 5 are pressed on a gauge baffle 8 through elastic strips 2, a spiral spike 3 penetrates through the gauge baffle 8, the bottom of the spiral spike 3 is connected with an embedded sleeve 6, the embedded sleeve 6 is fixed inside the sleeper 7, and a flat gasket 1 is arranged between the spiral spike 3 and the gauge baffle 8.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. The utility model provides a compound multilayer piezoelectric array energy storage backing plate of track traffic, includes plain washer (1), bullet strip (2), spiral spike (3), backing plate (4), waterproof elasticity backing plate (41), piezoelectricity vibration energy storage array layer (42), bottom (43), rail (5), pre-buried sleeve pipe (6), sleeper (7), gauge apron (8) and heighten backing plate (9), its characterized in that: the tie plate (7) is provided with a backing plate (4) above, the backing plate (4) comprises a waterproof elastic backing plate (41), a piezoelectric vibration energy storage array layer (42) and a bottom layer (43), the waterproof elastic backing plate (41) is laid at the bottom of an iron backing plate of the rail (5), the material of the waterproof elastic backing plate (41) is thermoplastic foamed polyurethane fiber material, the upper surface of the waterproof elastic backing plate (41) is provided with a convex block, the convex block on the upper surface of the waterproof elastic backing plate (41) is set to be any one of square and round, the piezoelectric vibration energy storage array layer (42) is embedded in the convex block on the upper surface of the waterproof elastic backing plate (41), the convex block on the upper surface of the waterproof elastic backing plate (41) is installed below a fastener iron gasket, the bottom layer (43) is arranged at the bottom of the waterproof elastic backing plate (41), and the bottom layer (43), and the bottom layer (43) comprises three levels of management subsystems from bottom to top, namely a single pad power management system, an area pad power management unit and a full-line pad power management system.
2. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: a height-adjusting cushion plate (9) is arranged between the cushion plate (4) and the sleeper (7).
3. The composite multilayer piezoelectric array energy storage tie plate for rail transit according to claim 1, wherein the total charge of the whole tie plate (4) is as follows:
where F is the stress of the elastic bump k, Δ l is the electrical displacement, E is the modulus of elasticity, A is the area of the bumps, and n is the number of bumps on the pad.
4. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: the whole outer side wrapping material of the waterproof elastic backing plate (41), the piezoelectric vibration energy storage array layer (42) and the bottom layer (43) is set to be a linear elastic material, and the waterproof elastic backing plate (41) and the bottom layer (43) are arranged from top to bottom according to the sequence of the piezoelectric vibration energy storage array layer (42), the waterproof elastic backing plate (41) and the bottom layer (43).
5. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: the convex blocks on the upper surface of the waterproof elastic backing plate (41) are distributed in an array mode, and the convex areas on the waterproof elastic backing plate (41) are the same.
6. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: the piezoelectric vibration energy storage array layer (42) comprises a piezoelectric network device and a super capacitor charging module array.
7. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: the single base plate power management system of the bottom layer (43) comprises an electric energy management module, a charging and discharging management module and an instruction for executing a power management unit.
8. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: the single pad (4) in the regional pad power management unit of the bottom layer (43) is an independent control structure.
9. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: the full-line pad power management system of the bottom layer (43) comprises a power supply unit and a self-checking unit.
10. The composite multilayer piezoelectric array energy storage base plate for rail transit according to claim 1, characterized in that: a rail (5) is arranged above the sleeper (7), the left side and the right side of the rail (5) are pressed on a gauge baffle (8) through elastic strips (2), a spiral spike (3) penetrates through the gauge baffle (8), the bottom of the spiral spike (3) is connected with an embedded sleeve (6), the embedded sleeve (6) is fixed inside the sleeper (7), and a flat washer (1) is arranged between the spiral spike (3) and the gauge baffle (8).
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