CN116929585A - Sensor for measuring transient temperature of wheel hub tread of high-speed train - Google Patents
Sensor for measuring transient temperature of wheel hub tread of high-speed train Download PDFInfo
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- CN116929585A CN116929585A CN202310809983.2A CN202310809983A CN116929585A CN 116929585 A CN116929585 A CN 116929585A CN 202310809983 A CN202310809983 A CN 202310809983A CN 116929585 A CN116929585 A CN 116929585A
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- sensor
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- 230000001052 transient effect Effects 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 52
- 229910005883 NiSi Inorganic materials 0.000 claims description 7
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 7
- 229910001120 nichrome Inorganic materials 0.000 claims description 7
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 63
- 239000000758 substrate Substances 0.000 description 10
- 238000002360 preparation method Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
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- 238000004140 cleaning Methods 0.000 description 1
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- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a sensor for measuring the transient temperature of a hub tread of a high-speed train, which comprises a cylindrical clamping body formed by a first semi-cylindrical structure (1) and a second semi-cylindrical structure (2), wherein a first insulating film (3), a first functional film (6), a third insulating film (5), a second functional film (7) and a second insulating film (4) are sequentially arranged between the first semi-cylindrical structure (1) and the second semi-cylindrical structure (2), the clamping body is arranged in a countersunk hole at the tread of a hub (17) through a sealing joint, the first functional film (6) and the second functional film (7) are mutually parallel, when the train runs, the temperature sensor is in contact with a wheel rail, the first functional film (6) and the second functional film (7) form a conducting state with the wheel rail, and a first functional film (6) and a second functional film (7) on the end face of the cylindrical clamping body form a temperature measuring point. The invention can measure the transient temperature of the wheel hub tread of the high-speed train, and the response time can reach one part per million second.
Description
Technical Field
The invention relates to the technical field of transient temperature measurement of discontinuous movement surfaces of temperature sensors, in particular to a sensor for measuring the transient temperature of a wheel hub tread of a high-speed train.
Background
The temperature measurement of the hub of the high-speed train is an important technology for monitoring the temperature change of the hub in the running process of the train. Since the speed of operation of a high speed train is relatively fast, the temperature of the hub can be affected by a number of factors, including braking, friction, train loading, etc. Accurate measurement of the temperature of the hub can help operators monitor train operating conditions, prevent potential problems, and take necessary maintenance measures. Too high or too low a hub temperature may cause operational safety problems.
Therefore, timely and accurate measurement of the hub temperature is critical to ensuring train operation safety. The sensor is used in conjunction with a data acquisition system and signal processing algorithms to obtain accurate hub temperature data. The real-time detection of the wheel hub tread of the high-speed train is beneficial to finding potential problems in advance and adopting corresponding maintenance measures, so that the safe operation of the high-speed train is ensured.
Disclosure of Invention
The invention designs a sensor for measuring the transient temperature of a wheel hub tread of a high-speed train, which solves the technical problems that the wheel hub temperature of the existing high-speed train is measured when the existing high-speed train runs, and oil and water on the wheel hub infiltrate into the sensor to cause the failure of the temperature sensor.
In order to solve the technical problems, the invention adopts the following scheme:
the utility model provides a high-speed train wheel hub tread transient temperature measures and uses sensor which characterized in that: the thermal insulation device comprises a cylindrical clamping body formed by a first semi-cylindrical structure (1) and a second semi-cylindrical structure (2), wherein a first insulating film (3), a first functional film (6), a third insulating film (5), a second functional film (7) and a second insulating film (4) are sequentially arranged between the first semi-cylindrical structure (1) and the second semi-cylindrical structure (2), the clamping body is arranged in a countersunk head hole in a tread of a hub (17) through a sealing joint, the first functional film (6) and the second functional film (7) are mutually parallel, when a train runs, a temperature sensor is in contact with a wheel rail, the first functional film (6) and the second functional film (7) form a conducting state with the wheel rail, and a temperature measuring point is formed by the first functional film (6) and the second functional film (7) on the end face of the cylindrical clamping body.
Preferably, the first semi-cylindrical structure (1), the second semi-cylindrical structure (2), the first insulating film (3), the first functional film (6), the third insulating film (5), the second functional film (7) and the second insulating film (4) are provided with through holes, and the above components are fastened by fastening screws (8).
Preferably, the sealing joint comprises a clamping ring (10), a sealing nut (11) and a sealing bolt (12), wherein the clamping ring (10) is connected with the upper end part of the sealing bolt (12), then a cylindrical clamping body penetrates through the clamping ring (10) and is placed in a mounting hole (121) of the sealing bolt (12), one part of the sealing nut (11) is in threaded connection with the sealing bolt (12), the other part of the sealing nut (11) is in contact with the clamping ring (10), and the clamping ring (10) is matched with the sealing bolt (12) to realize oil resistance and water resistance of the cylindrical clamping body.
Preferably, the sealing joint further comprises a support (13) and a rear seat (15), the lower end part of the sealing bolt (12) is in threaded connection with the support (13), the support (13) is located in an installation cavity of the rear seat (15), and a spring (14) is arranged between the rear seat (15) and the support (13) to adapt to extrusion between a hub and a steel rail when the high-speed train runs.
Preferably, a boss with a notch is machined on the inner surface of the mounting cavity of the rear seat (15) and is used for being in guide fit with the boss end of the sealing bolt (12) to realize circumferential positioning and axial guiding.
Preferably, the bottom of the rear seat (15) is provided with a screw rod (151), the bottom of a countersunk hole in the tread of the hub (17) is provided with a screw hole, and the rear seat (15) is fixed in the countersunk hole through the cooperation of the screw rod (151) and the screw hole.
Preferably, one end of a first lead (91) is connected with a first functional film (6), and the other end of the first lead (91) sequentially penetrates through a first insulating film (3), a first semi-cylindrical structure (1), a sealing bolt (12), a bracket (13) and a rear seat (15) and then is led out to be connected with a signal input section of a wireless emission acquisition terminal (16); one end of a second lead (92) is connected with a second functional film (7), sequentially passes through the second insulating film (4), the second semi-cylindrical structure (2), the sealing bolt (12), the bracket (13) and the rear seat (15) and then is led out to be connected with a signal input section of the wireless emission acquisition terminal (16).
Preferably, the wireless emission acquisition terminal (16) is arranged on the hub (17), and the wireless emission acquisition terminal (16) comprises a multi-way switch chip, a thermocouple acquisition chip, a singlechip main control chip with a Bluetooth function, a tpc rechargeable lithium battery and a unit miniature direct-insert connector directly connected with a sensor lead.
Preferably, the signal data collected by the thermocouple collection chip is sent to the upper computer (19) through the singlechip main control chip with Bluetooth function, the tread temperature data of the hub (17) are analyzed, and the temperature of the hub (17) is monitored.
Preferably, the first semi-cylindrical structure and the second semi-cylindrical structure are made of 6061 aluminum alloy materials;
the first functional film is a NiCr film; the second functional film is a NiSi film; siO used for the first, second and third insulating films 2 A film;
the first lead adopts a NiCr lead; and the second lead adopts a NiSi lead.
The sensor for measuring the transient temperature of the wheel hub tread of the high-speed train has the following beneficial effects:
(1) The temperature sensor for measuring the temperature of the hub tread of the high-speed train provided by the invention adopts an advanced film temperature sensor preparation technology to measure the temperature, and has the advantages of short response time, capability of measuring the transient temperature of the hub tread of the high-speed train, high response time of one part per million, high temperature measurement precision, capability of carrying out continuous measurement and the like.
(2) According to the invention, the temperature sensor is packaged in the sealing joint, so that the problem of water and oil drainage at the end face of the temperature sensor is solved.
(3) The thin film temperature sensor provided by the invention has the advantages that the spring structure is added between the bracket and the rear seat, so that the thin film temperature sensor can adapt to the extrusion between the train hub and the steel rail in the running process of a high-speed train, and the sensor is prevented from being damaged.
(4) The invention provides a film temperature sensor for measuring the tread of a hub of a high-speed train, which adopts a lead connection mode of integrating a lead substrate, integrates the lead with the substrate through a sintering technology, and ensures that the lead is fixed in the guiding-out process.
Drawings
FIG. 1 is an exploded view of a temperature sensor according to the present invention;
FIG. 2 is a schematic diagram of the fabrication of a temperature sensor according to the present invention;
FIG. 3 is an exploded view of the sealing joint of the present invention;
FIG. 4 is a cross-sectional view of a temperature sensor of the present invention;
FIG. 5 is a schematic view of a rear seat structure according to the present invention;
FIG. 6 is a schematic view of the seal bolt of the present invention;
FIG. 7 is a schematic diagram of sensor installation and signal acquisition according to the present invention;
FIG. 8 is a schematic diagram of a mask plate according to an embodiment of the present invention;
FIG. 9 is a schematic view of a specialized fixture provided by an embodiment of the present invention;
fig. 10 is a schematic view of a temperature detecting device according to the present invention.
Reference numerals illustrate:
1-a first semi-cylindrical structure; 2-a second semi-cylindrical structure; 3-a first insulating film; 4-a second insulating film; 5-a third insulating film; 6-a first functional film; 7-a second functional film; 8-fastening screws; 9-compensating wires; 91-a first lead; 92-a second lead; 10-a clamping ring; 11-a sealing nut; 12-a sealing bolt; 121—a mounting hole; 13-a bracket; 14-a spring; 15-a rear seat; 151-screw; 16-a wireless transmitting acquisition terminal; 17-a hub; 18-wheel track; 19-an upper computer.
Detailed Description
The invention is further described with reference to fig. 1 to 10:
as shown in fig. 1, the invention discloses a sensor for measuring the transient temperature of a hub tread of a high-speed train, which comprises a first semi-cylindrical structure 1 deposited with a film, a second semi-cylindrical structure 2 deposited with a film, a sealing nut 11, a sealing bolt 12, a bracket 13, a spring 14 and a rear seat 15.
In practice, as shown in fig. 2, as a preferred embodiment of the present invention, the temperature sensor includes a first insulating film 3 deposited on the surface of a first semi-cylindrical structure 1, and a first functional thin film 6 deposited on the first insulating film 3. A second insulating film 4, a second functional film 7 and a third insulating film 5 are sequentially deposited on the surface of the second semi-cylindrical structure 2. The first semi-cylindrical structure 1 and the second semi-cylindrical structure 2 are buckled, and are fastened through fastening screws 8 to form a cylindrical structure.
In particular, as a preferred embodiment of the present invention, as shown in fig. 3, a snap ring 10 is first connected to the upper end of a sealing bolt 12, then a fixed cylindrical structure is passed through the snap ring 10 and placed in a mounting hole 121 of the sealing bolt 12, and then the clamping of the cylindrical structure is achieved by rotating a sealing nut 11 on the sealing bolt 12, wherein a part of the sealing nut 11 is screwed with the sealing bolt 12 and another part of the sealing nut 11 is in contact with the snap ring 10. The lower end of the sealing joint or the lower end of the sealing bolt 12 is in threaded connection with the bracket 13, the bracket 13 is positioned in the mounting cavity of the rear seat 15, and a spring 14 is arranged between the rear seat 15 and the bracket 13.
In particular, as shown in fig. 4, as a preferred embodiment of the present invention, the first semi-cylindrical structure 1, the second semi-cylindrical structure 2, the first insulating film 3, the second insulating film 4, the sealing bolt 12 and the bracket 13 are provided with wire holes with the same diameter, the first wire 91 and the second wire 92 are respectively pressed at the thermode pins to realize crimping, the first wire 91 and the second wire 92 are respectively led out from the first functional film 6 and the second functional film 7, and the first wire 91 and the second wire 912 are respectively integrated with the first semi-cylindrical structure 1 and the second semi-cylindrical structure 2 by a ceramic sintering technology to form an insulating substrate, that is, a wire end. The first and second leads 91 and 92 are respectively inserted from the lead holes of the seal bolt 12 and the bracket 13. Wherein, the diameter of the lead hole is 0.5mm, and the diameter of the lead section is 0.3mm.
As shown in fig. 4, one end of a first lead 91 is connected to the first functional film 6, sequentially passes through the first insulating film 3, the first semi-cylindrical structure 1, the sealing bolt 12, the bracket 13 and the rear seat 15, and then is led out, and one end of a second lead 92 is connected to the second functional film 7, sequentially passes through the second insulating film 4, the second semi-cylindrical structure 2, the sealing bolt 12, the bracket 13 and the rear seat 15, and then is led out.
In specific implementation, as a preferred embodiment of the invention, the length of the bracket is determined according to the expansion and contraction amount of the spring, and the rear seat 15 is provided with a notch of a regular hexahedron, as shown in fig. 6, which is matched with a boss structure on the sealing bolt 12, so that the expansion and contraction movement of the whole sealing joint under the action of the spring 14 can be ensured. The outer surface of the sealing bolt 12 is provided with a boss guide, the length of the rear seat 15 is determined according to the expansion and contraction amount, and the contact point of the wheel rail and the sensor is ensured to be at the temperature measuring end, so that the sensor can be ensured to expand and contract smoothly.
In particular, as a preferred embodiment of the present invention, since 6061 aluminum alloy has excellent characteristics of small hardness, easiness in polishing, high thermal conductivity, small thermal expansion coefficient, good machining property, good corrosion resistance, compactness, uniformity, no defect, easiness in coating, etc., 6061 aluminum alloy material is used for the first and second semi-cylindrical structures 1 and 2. The material can be worn in cooperation with the measured object. The seal nut 11, the seal bolt 12, the bracket 13 and the rear seat 15 are made of stainless steel materials.
In specific implementation, as a preferred embodiment of the present invention, a NiCr film is used as the first functional film; the second functional film adopts a NiSi film; the insulating film is made of SiO 2 A film. The first lead 91 is a NiCr lead; the second wire 92 is a NiSi wire.
In specific implementation, as a preferred embodiment of the invention, the sensor for measuring the transient temperature of the hub tread of the high-speed train provided by the invention is characterized in that a countersunk hole structure is processed at the tread of the hub 17, threads are processed at the inner side of the countersunk hole, and the countersunk hole structure is matched with the countersunk hole through a bolt 151 of the rear seat 15 so as to fasten the temperature sensor.
In specific implementation, as a preferred embodiment of the invention, when the sensor for measuring the transient temperature of the hub tread of the high-speed train is operated by the high-speed train, the first functional film 6 and the second functional film 7 on the cylindrical end face are matched to form a temperature measuring point when the temperature sensor is contacted with the wheel rail 18.
This structure can be worn out during the measurement process but still continue to be used for measurement.
The following specifically describes the preparation process of each component of the sensor:
preparation of first semi-cylindrical structure 1 and second semi-cylindrical structure 2: a 6061 aluminum alloy cylindrical bar with a diameter of preferably 5mm was wire cut into a first semi-cylindrical structure 1 and a second semi-cylindrical structure 2.
Preparation of an insulating film: sequentially selecting 400-mesh, 800-mesh, 1000-mesh, 2000-mesh, 5000-mesh and 7000-mesh abrasive paper on the surface of a substrate to polish, sequentially polishing the substrate to a mirror surface by using polishing paste of W1.0 and W0.5 on a polishing machine, placing the substrate in an ultrasonic cleaning machine, respectively cleaning the substrate twice by using acetone, alcohol and deionized water, drying the substrate by using nitrogen, fixing the substrate on a special fixture of FIG. 7, placing the substrate in a vacuum sputtering chamber of a vacuum multifunctional composite coating machine, and depositing a SiO2 film serving as an insulating film of a thermocouple by using a direct current pulse magnetron sputtering technology.
Preparation of functional film: covering the prepared SiO2 insulating film with a NiCr and NiSi mask plate shown in figure 8, and adopting a direct-current pulse magnetron sputtering deposition functional film 5, wherein the preparation process and the insulating film SiO are as follows 2 The same applies.
In practice, as a preferred embodiment of the present invention, the wireless emission collection terminal 16 is screwed onto the side of the hub 17 as shown in fig. 9. The first lead 91 and the second lead 92 are connected to a wireless transmission acquisition terminal. The wireless emission acquisition terminal comprises a multi-way switch chip, a thermocouple acquisition chip, a singlechip main control chip with a Bluetooth function, a tpc rechargeable lithium battery and a unit miniature direct-insert connector directly connected with a sensor lead wire, and is used for sending a sensor signal to the wireless receiving terminal.
In particular, as shown in fig. 10, the host computer 19 has a USB bluetooth receiving terminal for receiving the sensor signal. The collected signal data can be analyzed and applied by the upper computer 19. The temperature of the hub 17 is monitored by analyzing the hub tread temperature data.
The invention has been described above by way of example with reference to the accompanying drawings, it is clear that the implementation of the invention is not limited to the above-described manner, but it is within the scope of the invention to apply the inventive concept and technical solution to other situations as long as various improvements made by the inventive concept and technical solution are adopted or without any improvement.
Claims (10)
1. The utility model provides a high-speed train wheel hub tread transient temperature measures and uses sensor which characterized in that: the thermal insulation device comprises a cylindrical clamping body formed by a first semi-cylindrical structure (1) and a second semi-cylindrical structure (2), wherein a first insulating film (3), a first functional film (6), a third insulating film (5), a second functional film (7) and a second insulating film (4) are sequentially arranged between the first semi-cylindrical structure (1) and the second semi-cylindrical structure (2), the clamping body is arranged in a countersunk head hole in a tread of a hub (17) through a sealing joint, the first functional film (6) and the second functional film (7) are mutually parallel, when a train runs, a temperature sensor is in contact with a wheel rail, the first functional film (6) and the second functional film (7) form a conducting state with the wheel rail, and a temperature measuring point is formed by the first functional film (6) and the second functional film (7) on the end face of the cylindrical clamping body.
2. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 1, wherein: the first semi-cylindrical structure (1), the second semi-cylindrical structure (2), the first insulating film (3), the first functional film (6), the third insulating film (5), the second functional film (7) and the second insulating film (4) are provided with through holes, and the parts are fastened through fastening screws (8).
3. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 1, wherein: the sealing joint comprises a clamping ring (10), a sealing nut (11) and a sealing bolt (12), wherein the clamping ring (10) is connected with the upper end of the sealing bolt (12), then a cylindrical clamping body penetrates through the clamping ring (10) and is placed in a mounting hole (121) of the sealing bolt (12), one part of the sealing nut (11) is in threaded connection with the sealing bolt (12), the other part of the sealing nut (11) is in contact with the clamping ring (10), and the clamping ring (10) is matched with the sealing bolt (12) to realize oil resistance and water resistance of the cylindrical clamping body.
4. A sensor for measuring the transient temperature of a tread of a high-speed train according to claim 3, wherein: the sealing joint further comprises a support (13) and a rear seat (15), the lower end of the sealing bolt (12) is in threaded connection with the support (13), the support (13) is located in an installation cavity of the rear seat (15), and a spring (14) is arranged between the rear seat (15) and the support (13) to adapt to extrusion between a hub and a steel rail during operation of the high-speed train.
5. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 4, wherein: the inner surface of the mounting cavity of the rear seat (15) is provided with a boss with a notch, and the boss is used for guiding and matching with the boss end of the sealing bolt (12) to realize circumferential positioning and axial guiding.
6. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 5, wherein: the bottom of the rear seat (15) is provided with a screw rod (151), the bottom of a countersunk hole at the tread of the hub (17) is provided with a screw hole, and the rear seat (15) is fixed in the countersunk hole through the cooperation of the screw rod (151) and the screw hole.
7. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to any one of claims 1 to 6, wherein: one end of a first lead (91) is connected with a first functional film (6), and the other end of the first lead (91) sequentially penetrates through a first insulating film (3), a first semi-cylindrical structure (1), a sealing bolt (12), a bracket (13) and a rear seat (15) and then is led out to be connected with a signal input section of a wireless emission acquisition terminal (16); one end of a second lead (92) is connected with a second functional film (7), sequentially passes through the second insulating film (4), the second semi-cylindrical structure (2), the sealing bolt (12), the bracket (13) and the rear seat (15) and then is led out to be connected with a signal input section of the wireless emission acquisition terminal (16).
8. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 7, wherein: the wireless emission acquisition terminal (16) is fixed on the hub (17) through a screw, and the wireless emission acquisition terminal (16) comprises a multi-way switch chip, a thermocouple acquisition chip, a singlechip main control chip with a Bluetooth function, a tpc rechargeable lithium battery and a unit miniature direct-insert connector directly connected with a sensor lead.
9. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 8, wherein: the signal data collected by the thermocouple collection chip is sent to an upper computer (19) through a singlechip main control chip with a Bluetooth function, tread temperature data of the hub (17) are analyzed, and the temperature of the hub (17) is monitored.
10. The sensor for measuring the transient temperature of the tread of the hub of the high-speed train according to claim 9, wherein:
the first semi-cylindrical structure and the second semi-cylindrical structure are made of 6061 aluminum alloy materials;
the first functional film is a NiCr film; the second functional film is a NiSi film; siO used for the first, second and third insulating films 2 A film;
the first lead adopts a NiCr lead; and the second lead adopts a NiSi lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310809983.2A CN116929585A (en) | 2023-07-04 | 2023-07-04 | Sensor for measuring transient temperature of wheel hub tread of high-speed train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310809983.2A CN116929585A (en) | 2023-07-04 | 2023-07-04 | Sensor for measuring transient temperature of wheel hub tread of high-speed train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116929585A true CN116929585A (en) | 2023-10-24 |
Family
ID=88383566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310809983.2A Pending CN116929585A (en) | 2023-07-04 | 2023-07-04 | Sensor for measuring transient temperature of wheel hub tread of high-speed train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116929585A (en) |
-
2023
- 2023-07-04 CN CN202310809983.2A patent/CN116929585A/en active Pending
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