CN211981779U - Rail train axle temperature acquisition device for piezoelectric ceramic power generation - Google Patents
Rail train axle temperature acquisition device for piezoelectric ceramic power generation Download PDFInfo
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- CN211981779U CN211981779U CN202020376854.0U CN202020376854U CN211981779U CN 211981779 U CN211981779 U CN 211981779U CN 202020376854 U CN202020376854 U CN 202020376854U CN 211981779 U CN211981779 U CN 211981779U
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- 239000000919 ceramic Substances 0.000 title claims description 59
- 238000010248 power generation Methods 0.000 title claims description 13
- 238000004146 energy storage Methods 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 15
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 2
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000009422 external insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance 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
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a rail train axle temperature collection system of piezoceramics electricity generation, the device fix at the train axle head, include by lower supreme fixed circular base, wall shell and the lid in proper order, the device still includes by lower supreme support and the piezoceramics piece of setting at the wall shell intracavity, the support on fixed data acquisition circuit board, the base on be equipped with the energy storage electric capacity of being connected with the piezoceramics piece and be connected the aviation joint that is used for being connected outside temperature sensor with the data acquisition circuit board. Compared with the prior art, the utility model has the advantages of need not external power source power supply, long service life, easy dismounting, compact structure.
Description
Technical Field
The utility model belongs to the technical field of rail train operation safety monitoring and specifically relates to a rail train axle temperature collection system of piezoceramics electricity generation is related to.
Background
When a fault occurs between an axle and a bearing when a train is in operation, the friction force is increased, the generated heat energy is increased, if the fault cannot be found in time, the axle is burned or even cut, so that the change of the temperature of the axle box is measured, whether the working state of the axle box is normal or not is determined, and the method is very important for the normal operation of the train. The traditional temperature measurement mode has the shaft temperature indicating paste and the handheld thermodetector, the labor intensity of detection personnel is high, the efficiency is low, the detection activity has hysteresis, the health condition of the shaft end of a train cannot be monitored in real time, and the normal operation safety of the train is difficult to guarantee. The existing scheme combines temperature measurement and radio frequency technology to design a shaft temperature acquisition device installed on a train, but the device needs to change the original electric structure of the train to obtain a power supply, and meanwhile, the long-term violent vibration of the axle end of the train easily causes the internal structure of the acquisition device to be damaged or a connecting bolt to be loosened to cause failure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rail train axle temperature collection system of piezoceramics electricity generation just for overcoming the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
the utility model provides a rail train axle temperature collection system of piezoceramics electricity generation, the device is fixed at the train axle head, includes by lower supreme circular base, wall shell and the lid of fixing in proper order, the device still include by lower supreme support and the piezoceramics piece of setting in the wall shell intracavity, the support on fixed data acquisition circuit board, the base on be equipped with the energy storage electric capacity of being connected with the piezoceramics piece and be connected with the data acquisition circuit board and be used for being connected the aviation joint of outside temperature sensor.
The piezoelectric ceramic piece comprises a beryllium copper substrate, piezoelectric ceramic coated on the upper surface and the lower surface of the beryllium copper substrate and mass blocks respectively fixed at the centers of the upper surface and the lower surface of the beryllium copper substrate, a countersunk through hole is formed in the axis of each mass block, and the two mass blocks are symmetrically fixed on the upper surface and the lower surface of the beryllium copper substrate through bolts.
The outer circumference of the beryllium copper substrate is provided with 4 fixing lugs which are integrally formed with the beryllium copper substrate in a cross shape, and the lugs are provided with fixing holes.
Piezoceramics piece about respectively through circular hollow piezoceramics clamping ring press from both sides dress fixed insulation, go up piezoceramics clamping ring and piezoceramics clamping ring down and pass the fixed orifices on T type clamping ring fixed orifices and the auricle respectively through the bolt and press from both sides the dress, lower piezoceramics clamping ring install at the support up end, the up end and the wall shell up end of last piezoceramics clamping ring flush to compress tightly through the lid internal surface, be used for realizing spacing the fixed upper portion of quality piece to piezoceramics piece.
And a cross limiting plate is also arranged between the lower piezoelectric ceramic pressure ring and the bracket and used for realizing the lower part limiting of the mass block.
The support comprises four small supports which are identical in structure and are uniformly distributed along the circumference, each small support is composed of an arc-shaped support main body and a boss arranged in the middle of the inner surface of the support main body, the upper end face of the support main body is provided with a piezoelectric ceramic pressure ring fixing hole, and the bosses are provided with circuit board fixing holes.
The data acquisition circuit board is fixed on the boss, and a rubber buffer cushion is arranged between the data acquisition circuit board and the boss for absorbing vibration impact from the axle end of the train.
The cross-sectional shape of the inner cavity of the wall shell is the same as the outline of the piezoelectric ceramic pressure ring, and the piezoelectric ceramic pressure ring and the bracket are embedded in the inner cavity of the wall shell.
The bottom surface of base set up support fixed orifices, wall shell fixed orifices, energy storage capacitor groove, aviation connector mounting hole and screw thread blind hole, the screw thread blind hole be used for fixing the base at the train axle head through the bolt, support fixed orifices and wall shell fixed orifices be countersunk head through-hole for fix support and wall shell respectively through the bolt, aviation connector mounting hole be used for installing the aviation connector, energy storage capacitor groove be used for installing energy storage capacitor.
The mass block is in a circular truncated cone shape with a small upper part and a big lower part.
Compared with the prior art, the utility model has the advantages of it is following:
firstly, need not external power supply, long service life: when a train runs, the shaft end of the train has the characteristic of continuous vibration movement, the piezoelectric ceramic piece is adopted to collect vibration energy and convert the vibration energy into electric energy, the energy storage capacitor stores the electric energy, external power supply or a chemical battery is not needed, compared with the chemical battery, the energy storage capacitor has more charging and discharging times, the influence of temperature on the capacity is basically not needed to be considered, in addition, the upper layer is used for pressing the head part of the fixing bolt of the next layer structurally, the anti-loosening measure of the fixing bolt is designed structurally in advance, and the reliability of the long-term use of the structure is improved.
Secondly, the disassembly and the assembly are convenient: the invention is assembled with the piezoelectric ceramic piece and the piezoelectric ceramic pressure ring, thereby facilitating the debugging in the product development and the maintenance in the later use.
Thirdly, the structure is compact: the invention arranges the bolt holes for fixing the cover and the base on the wall casing, removes redundant materials which do not influence the mechanical strength of the wall casing, saves a support arranged in the space, adopts the upper cover of the structure as the upper limit of the motion of the mass block, and saves a limit plate and a fixing structure thereof.
Drawings
Fig. 1 is an exploded view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the base, wherein fig. 2a is a bottom view, (2b) is a front view, and (2c) is a top view.
Fig. 3 is a schematic structural view of the arc-shaped bracket, wherein fig. 3a is a bottom view, (3b) is a left view, and (3c) is a top view.
Fig. 4 is a schematic structural view of a wall housing.
Fig. 5 is a schematic structural view of the piezoelectric ceramic plate.
The notation in the figure is:
1. the cover, 2, the quality piece, 3, the limiting plate, 4, the walling shell, 5, the support, 6, the energy storage electric capacity, 7, the base, 8, the aviation connector, 9, rubber buffer, 10, the data acquisition circuit board, 11, the piezoceramics piece, 12, piezoceramics piece clamping ring, 701, the support fixed orifices, 702, walling shell fixed orifices, 703, the energy storage electric capacity groove, 704, the aviation connector mounting hole, 705, screw thread blind hole, 501, piezoceramics clamping ring fixed orifices, 502, the circuit board fixed orifices, 503, the boss, 401, concave-convex structure, 402, the lid fixed orifices.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Example (b):
as shown in fig. 1, the invention provides a piezoelectric ceramic power generation rail train shaft temperature acquisition device for acquiring the shaft temperature of a train to ensure the running safety of the train, the device comprises a cover 1, a piezoelectric ceramic pressure ring 12, a piezoelectric ceramic piece 11, a mass block 2, a limit plate 3, a wall shell 4, a bracket 5, a data acquisition circuit board 10 based on an STM8L single chip microcomputer, an energy storage capacitor 6, an aviation connector 8, a base 7 and other components, and the specific structure and function of each component are introduced as follows:
the base 7, as shown in fig. 2, is provided with a threaded blind hole 705 on the base 1 for fixing the whole device on the installation plane of the axle end of the train, the bottom of the base 7 is provided with an energy storage capacitor slot 703, a bracket fixing hole 701, a wall shell fixing hole 702 and an aviation connector fixing hole 704, the bracket fixing hole 701 and the wall shell fixing hole 702 are both countersunk through holes, the bolts used for fixing the bracket 5 and the wall shell 4 are screwed down, the end surface of the bolt head is flush with the lower surface of the base 7, the mounting plane at the end of the train shaft can support the bolts to prevent the bolts from loosening, the aviation connector 8 is fixed on the base 7, the temperature sensor is used for connecting an external temperature sensor to the data acquisition circuit board 10, the mounting hole of the aviation connector is arranged on the base, damage caused by rain water inflow and impact on the top or the side of the structure can be well avoided, and the energy storage capacitor groove 703 arranged on the base 7 is used for mounting the energy storage capacitor 6.
The support 5 is composed of 4 small supports with the same circumferential arrangement structure, as shown in fig. 3, the cross section of each small support is arc-shaped, the bottom of each small support is provided with a threaded hole for fixing the support 5 on a support fixing hole 701 of the base 7, the inner side of the support 5 is provided with a boss 503 for fixing a circuit board, and the top of the small support is provided with a piezoelectric ceramic press ring fixing hole 501 for fixing the piezoelectric ceramic press ring 12;
as shown in fig. 4, the inner side of the wall casing 4 is provided with a concave-convex structure 401, the portion of the wall casing 4 adjacent to the bracket 5 is hollowed out, so that the bracket 5 can be embedded into the wall casing 4, the impact bearing capability of the bracket 5 is enhanced, and the upper and lower end surfaces of the wall casing 4 are provided with base fixing holes 402 for connecting a base and a cover.
The piezoelectric ceramic piece 11 is a beryllium copper base, the upper surface and the lower surface of the base are coated with annular piezoelectric ceramic, four groups of convex lug pieces are arranged on the edge of the piezoelectric ceramic piece 11, fixing holes are formed in the lug pieces, a mass block fixing hole is formed in the center of the piezoelectric ceramic piece 11, the mass block 2 is in a truncated cone shape with a small top and a big bottom, a countersunk through hole is formed in the axis, and the two mass blocks 2 are symmetrically fixed on the base of the piezoelectric ceramic piece by using bolts.
The piezoelectric ceramic compression ring 12 is used for clamping and fixing the piezoelectric ceramic piece to realize the external insulation of the piezoelectric ceramic piece; as shown in fig. 5, the piezoelectric ceramic compression ring 12 is made of nylon material, the inner ring is an effective motion space of the piezoelectric ceramic plate 11, the outer ring is provided with four groups of protruding T-shaped fixing holes, the insulating sleeve is installed in the fixing holes of the piezoelectric ceramic plate, two ends of the insulating sleeve are respectively sleeved into the T-shaped fixing holes of the upper piezoelectric ceramic compression ring and the lower piezoelectric ceramic compression ring, bolts penetrate through the insulating sleeve to fix the upper piezoelectric ceramic compression ring and the lower piezoelectric ceramic compression ring on the top of the bracket, the upper piezoelectric ceramic compression ring and the lower piezoelectric ceramic compression ring clamp the piezoelectric ceramic plate 11 and realize the external insulation of the piezoelectric ceramic plate, and the mass block 2 is used for adjusting the working frequency of the piezoelectric.
Limiting plate 3 and lid 1, limiting plate 3 are the cross, fix between piezoceramics clamping ring 12 and support 5, and lid 1 and limiting plate 3 restrict the upper and lower displacement of quality piece 2, and the range of quality piece displacement can be adjusted through the height that changes the support and the thickness of piezoceramics clamping ring.
The data acquisition circuit board 10 is fixed on the boss of the bracket 5, and a rubber buffer pad 9 is padded between the data acquisition circuit board 10 and the boss for absorbing the vibration impact from the axle end of the train and protecting the data acquisition circuit board 10.
The assembly steps of the piezoelectric ceramic power generation rail train shaft temperature acquisition device of the embodiment are as follows:
1) the energy storage capacitor 6 is fixed in an energy storage capacitor groove 703 of the base 7 through AB glue, the aviation connector 8 is fixed in an aviation connector fixing hole 704 of the base 7, and four small brackets are fixed on the base 7 by using bolts;
2) a rubber buffer pad 9 used by a data acquisition circuit board 10 is placed on the boss of the bracket 5, and the data acquisition circuit board 10 is fixed on the boss of the bracket 5 by using bolts;
3) the two mass blocks 2 are symmetrically fixed on the upper surface and the lower surface of the beryllium copper base of the piezoelectric ceramic piece 11 by using bolts, the upper piezoelectric ceramic pressing ring and the lower piezoelectric ceramic pressing ring are fixed, the piezoelectric ceramic piece 11 is clamped by the upper piezoelectric ceramic pressing ring and the lower piezoelectric ceramic pressing ring, the piezoelectric ceramic piece is insulated from the outside, and the piezoelectric ceramic piece 11, the upper piezoelectric ceramic pressing ring, the lower piezoelectric ceramic pressing ring and the limiting plate 3 are fixed on the top of the small support by using bolts.
4) The wall shell 4 is sleeved on the bracket 5, the wall shell 4 is fixed with the base 7 by using bolts, and then the cover 1 is fixed with the wall shell 4 by using bolts.
The above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a rail train axle temperature collection system of piezoceramics electricity generation, the device is fixed at the train axle head, includes by lower supreme fixed circular base (7), walling shell (4) and lid (1) in proper order, its characterized in that, the device still include by lower supreme support (5) and piezoceramics piece (11) of setting in the walling shell intracavity, support (5) on fixed data acquisition circuit board (10), base (7) on be equipped with energy storage capacitor (6) be connected with piezoceramics piece (11) and be connected aviation joint (8) that are used for being connected outside temperature sensor with data acquisition circuit board (10).
2. The piezoelectric ceramic power generation rail train shaft temperature acquisition device according to claim 1, wherein the piezoelectric ceramic piece (11) comprises a beryllium copper substrate, piezoelectric ceramic coated on the upper surface and the lower surface of the beryllium copper substrate, and mass blocks (2) respectively fixed at the centers of the upper surface and the lower surface of the beryllium copper substrate, a countersunk through hole is formed in the axis of each mass block (2), and the two mass blocks (2) are symmetrically fixed on the upper surface and the lower surface of the beryllium copper substrate through bolts.
3. The piezoelectric ceramic power generation rail train shaft temperature acquisition device as claimed in claim 2, wherein the beryllium copper substrate is provided with 4 fixing lugs integrally formed with the beryllium copper substrate in a cross shape on the outer circumference, and the lugs are provided with fixing holes.
4. The rail train axle temperature collection system of piezoceramics power generation according to claim 3, characterized in that, piezoceramics piece (11) about respectively through circular hollow piezoceramics clamping ring (12) press from both sides dress fixed insulation, go up piezoceramics clamping ring and press from both sides the dress through the fixed orifices that the bolt passed on T type clamping ring fixed orifices and the auricle respectively with lower piezoceramics clamping ring, lower piezoceramics clamping ring install at support (5) up end, the up end of last piezoceramics clamping ring flush with walling shell (4) up end to compress tightly through lid (1) internal surface, be used for realizing fixed and the upper portion of quality piece spacing to piezoceramics piece (11).
5. The piezoelectric ceramic power generation rail train shaft temperature acquisition device according to claim 4, wherein a cross-shaped limiting plate (3) is further arranged between the lower piezoelectric ceramic pressure ring and the support (5) to realize lower limiting of the mass block.
6. The piezoelectric ceramic power generation rail train shaft temperature acquisition device according to claim 1, wherein the support (5) comprises four small supports which are identical in structure and uniformly distributed along the circumference, each small support is composed of an arc-shaped support main body and a boss (503) arranged in the middle of the inner surface of the support main body, a piezoelectric ceramic pressure ring fixing hole (501) is formed in the upper end face of the support main body, and a circuit board fixing hole (502) is formed in the boss (503).
7. The piezoceramic power generation rail train axle temperature acquisition device according to claim 6, characterized in that the data acquisition circuit board (10) is fixed on the boss (503), and a rubber buffer cushion (9) is arranged between the data acquisition circuit board (10) and the boss (503) to absorb the vibration impact from the axle end of the train.
8. The piezoelectric ceramic power generation rail train shaft temperature acquisition device according to claim 4, wherein the cross-sectional shape of the inner cavity of the wall shell is the same as the outer contour of the piezoelectric ceramic pressure ring (12), and the piezoelectric ceramic pressure ring (12) and the bracket (5) are embedded in the inner cavity of the wall shell.
9. The piezoelectric ceramic power generation rail train shaft temperature acquisition device as claimed in claim 1, wherein a support fixing hole (701), a wall casing fixing hole (702), an energy storage capacitor groove (703), an aircraft connector mounting hole (704) and a threaded blind hole (705) are formed in the bottom surface of the base (7), the threaded blind hole (705) is used for fixing the base (7) at the end of a train shaft through bolts, the support fixing hole (701) and the wall casing fixing hole (702) are countersunk through holes and used for fixing a support (5) and a wall casing (4) respectively through bolts, the aircraft connector mounting hole (704) is used for mounting an aircraft connector (8), and the energy storage capacitor groove (703) is used for mounting an energy storage capacitor (6).
10. The piezoceramic power generation rail train axle temperature acquisition device according to claim 2, wherein the mass block (2) is in a circular truncated cone shape with a small top and a big bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020376854.0U CN211981779U (en) | 2020-03-23 | 2020-03-23 | Rail train axle temperature acquisition device for piezoelectric ceramic power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020376854.0U CN211981779U (en) | 2020-03-23 | 2020-03-23 | Rail train axle temperature acquisition device for piezoelectric ceramic power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211981779U true CN211981779U (en) | 2020-11-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020376854.0U Expired - Fee Related CN211981779U (en) | 2020-03-23 | 2020-03-23 | Rail train axle temperature acquisition device for piezoelectric ceramic power generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211981779U (en) |
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2020
- 2020-03-23 CN CN202020376854.0U patent/CN211981779U/en not_active Expired - Fee Related
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