Apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature

Abstract

This utility model relates to a device for non-contact monitoring of the tread temperature of wheels on large road maintenance machinery vehicles, and belongs to the field of wheel tread temperature monitoring technology. It includes a main unit, a tread acquisition box and a temperature compensation system electrically connected to the main unit, and a temperature sensor electrically connected to the tread acquisition box. The temperature sensor is mounted on the bogie frame and positioned directly opposite the wheel flange. The temperature sensor monitors the wheel flange temperature, and the temperature compensation system compensates for the wheel flange temperature to obtain the tread temperature. By mounting the temperature sensor on the bogie frame and directly opposite the wheel flange temperature, there is no need to install a temperature sensor on the wheel body, thus preserving the original structure of the wheel and improving its service life. Furthermore, the temperature compensation system can compensate for the temperature to obtain an accurate tread temperature.

Description

Technical Field

[0001] This utility model belongs to the field of wheel tread temperature monitoring technology, and specifically relates to a device for non-contact monitoring of wheel tread temperature of large road maintenance machinery vehicles. Background Technology

[0002] Large track maintenance vehicles are large, specialized mechanical equipment used for the maintenance, repair, and construction of railway lines. They come in many varieties and can be categorized by function as tamping vehicles, ballast cleaning vehicles, track stabilizing vehicles, ballast shaping vehicles, rail grinding vehicles, rail replacement vehicles, and overhaul trains. Large track maintenance vehicles are core equipment for modern railway maintenance, especially in high-speed and heavy-haul railways. With the continuous increase in train speeds and operational density, the requirements for their operational safety equipment in terms of functionality, reliability, and safety are becoming increasingly stringent. The axle temperature, wheel tread temperature, and gearbox temperature data of large track maintenance vehicles are crucial indicators for operational safety and wheel and axle maintenance, playing a vital role in ensuring the safe operation of these vehicles.

[0003] The temperature change of the wheel tread directly reflects the condition of the braking system, the health of the bearings, and the interaction between the wheel and rail. Excessive temperature is highly dangerous, leading to hot rails, thermal cracks in the tread, tread peeling, rail damage, and even derailment, seriously affecting railway operation safety. Traditional detection methods are insufficient, relying solely on manual inspections and axle temperature monitoring. Manual inspections are inherently lagging and cannot provide real-time monitoring during operation. Axle temperature monitoring can only detect the temperature of bearings or gearboxes, failing to reflect the wheel tread temperature. Using sensor technology to monitor wheel tread temperature requires drilling holes in the wheel rim, inevitably altering the wheel's original structure and reducing its lifespan.

[0004] Therefore, in response to the above-mentioned technical problems, it is necessary to design a device for non-contact monitoring of the tread temperature of large road maintenance machinery vehicles. Ensuring the accuracy of tread temperature monitoring without damaging the original structure of the wheel is a technical problem that needs to be solved by those skilled in the art. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a device for non-contact monitoring of the tread temperature of wheels on large road maintenance machinery vehicles, ensuring the accuracy of tread temperature monitoring without damaging the original wheel structure.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] The device for non-contact monitoring of the tread temperature of wheels of large road maintenance machinery includes a main unit, a tread acquisition box and a temperature compensation system electrically connected to the main unit, and a temperature sensor electrically connected to the tread acquisition box. The temperature sensor is installed on the bogie frame and is positioned directly opposite the wheel flange. The temperature sensor is used to monitor the wheel flange temperature, and the temperature compensation system is used to compensate for the wheel flange temperature and obtain the tread temperature.

[0008] Preferably, the straight-line distance between the temperature sensor and the wheel rim is 20cm to 40cm.

[0009] Preferably, the temperature sensor is an infrared temperature sensor.

[0010] Preferably, it also includes a first axle temperature sensor disposed on the wheelset axle box for monitoring bearing temperature, a second axle temperature sensor disposed on the wheel gearbox for monitoring axle gearbox temperature, and a third axle temperature sensor disposed on the bogie frame for monitoring ambient temperature.

[0011] Preferably, there are two first axle temperature sensors, and the two first axle temperature sensors are respectively disposed on both sides of the wheelset axle box; there are two second axle temperature sensors, and the two second axle temperature sensors are respectively disposed on both sides of the wheel gear box.

[0012] Preferably, each wheel set axle box is equipped with a first axle temperature sensor, and each wheel gearbox is equipped with a second axle temperature sensor.

[0013] Preferably, the device also includes a display, which is electrically connected to the host computer.

[0014] Preferably, the display is provided with a USB transfer interface.

[0015] Preferably, it also includes an alarm system, which is electrically connected to the host computer.

[0016] Preferably, the alarm system is an audible and visual alarm.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] By placing the temperature sensor on the steering frame, directly facing the wheel flange, there is no need to install a temperature sensor on the wheel body. This avoids damaging the original wheel structure and extends the wheel's lifespan. Furthermore, since there is a 1-2°C deviation between the positional temperature of the wheel flange monitored by the non-contact infrared temperature sensor and the actual tread temperature, a temperature compensation system can be used to compensate for this deviation and obtain an accurate tread temperature. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Appendix Figure 1 A schematic diagram of the equipment composition structure for non-contact monitoring of the wheel tread temperature of large road maintenance machinery vehicles disclosed in this embodiment of the present utility model;

[0021] Appendix Figure 2 This is a schematic diagram of the monitoring position of the monitoring part of the device for non-contact monitoring of the wheel tread temperature of a large road maintenance machinery vehicle, as disclosed in an embodiment of this utility model.

[0022] Appendix Figure 3 A schematic diagram showing the location of the infrared sensor for non-contact monitoring of the tread temperature of wheels of large road maintenance machinery vehicles, as disclosed in this embodiment of the present invention.

[0023] Among them, 1. Infrared temperature sensor; 2. Wheel flange; 3. Axle. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The purpose of this invention is to provide a device for non-contact monitoring of the tread temperature of wheels on large road maintenance machinery vehicles, ensuring the accuracy of wheel tread temperature monitoring without damaging the original structure of the wheel.

[0026] refer to Figures 1-3The device for non-contact monitoring of the tread temperature of large road maintenance machinery vehicles disclosed in this embodiment of the present invention includes at least a main unit. The main unit is electrically connected to a tread acquisition box and a temperature compensation system. The tread acquisition box is electrically connected to a temperature sensor. The tread acquisition box is used to acquire the temperature monitored by the temperature sensor. The temperature sensor is set on the bogie frame and is positioned directly opposite the wheel flange 2. The temperature sensor is used to monitor the temperature of the wheel flange 2, and the temperature compensation system is used to compensate for the temperature of the wheel flange 2 to obtain the tread temperature. By setting the temperature sensor on the bogie frame and directly opposite the temperature of the wheel flange 2, it is not necessary to set the temperature sensor on the wheel body. This can avoid damaging the original structure of the wheel and improve the service life of the wheel. Moreover, since there is a 1℃-2℃ deviation between the position temperature of the wheel flange 2 monitored by the non-contact infrared temperature sensor and the actual tread temperature, the temperature can be compensated by increasing or decreasing the temperature by 1℃-2℃ through the temperature compensation system to obtain an accurate tread temperature.

[0027] It should be noted that the host is the control center of the entire device, providing 24V power to the dual-end displays and the tread acquisition box, while communicating with peripheral units: communicating with the tread acquisition box via RS422 to obtain real-time temperature information; communicating with the dual-end displays via CAN to provide real-time temperature information display and alarm information, parameter query, parameter configuration, and record dumping; communicating with the GYK host via RS422 to obtain common information for data recording; and reserving communication with the public screen via CAN / RS485 for real-time temperature information display.

[0028] The input power supply has a rated operating voltage of DC24V and a fluctuation range of 18 to 36V. The power interface has overvoltage, overcurrent, undervoltage, and reverse connection protection.

[0029] GYK refers to the railcar operation control equipment, which provides the wheel tread monitoring device with common information such as time, vehicle type, vehicle number, kilometer marker, and speed for recording and analysis; CAN refers to the controller area network.

[0030] refer to Figure 2 As one implementation method, the tread acquisition box can collect the axle temperature and tread temperature values ​​of multiple wheels. The tread acquisition box is responsible for collecting axle temperature, tread temperature and ambient temperature in real time and transmitting them to the host via RS485. It has the function of detecting open circuit, short circuit and detachment of axle temperature sensor and temperature sensor. Multiple tread acquisition boxes can be cascaded and distinguished by internal coding switches.

[0031] refer to Figure 2 and Figure 3 As one implementation method, the straight-line distance between the temperature sensor and the wheel flange 2 is 20cm-40cm, which can improve the monitoring accuracy.

[0032] refer to Figure 1 and Figure 2 In one implementation, the temperature sensor is an infrared temperature sensor 1. The infrared temperature sensor 1 can calculate the surface temperature of an object by measuring the intensity of infrared radiation emitted by the target without contacting it, making it convenient to measure the temperature of targets that are difficult to approach or move.

[0033] It should be noted that the infrared temperature sensor 1 is installed on the outside of the wheel of the bogie frame, directly opposite the wheel flange 2. The temperature measurement range of the infrared temperature sensor 1 is 0 to 500℃; the temperature measurement accuracy is ±1.5% of the measured value; and the temperature measurement response time is 150ms.

[0034] refer to Figure 1 and Figure 2 As one implementation, it also includes a first axle temperature sensor installed on the wheelset axle box for monitoring bearing temperature, a second axle temperature sensor installed on the wheel gearbox for monitoring axle gearbox temperature, and a third axle temperature sensor installed on the bogie frame for monitoring ambient temperature, thereby realizing contact measurement of bearing temperature, gearbox temperature and ambient temperature.

[0035] It should be noted that the temperature measurement range is -55℃ to 125℃; the measurement resolution is 1℃.

[0036] Temperature measurement accuracy: The first, second, and third shaft temperature sensors use M12 threaded connecting screws and contact temperature measurement method. The error is less than or equal to 2℃ in the range of -15℃ to +105℃; and less than or equal to 4℃ when the temperature is below -15℃ or above +105℃.

[0037] refer to Figure 1 and Figure 2 In one implementation, two first axle temperature sensors are provided, one on each side of the wheelset axle box, and two second axle temperature sensors are provided, one on each side of the wheel gearbox, which can make temperature monitoring more accurate.

[0038] refer to Figure 1 and Figure 2 In one embodiment, a first axle temperature sensor is provided on each wheelset axle box, and a second axle temperature sensor is provided on each wheel gearbox. That is, one first axle temperature sensor is installed on each side of each wheelset axle box to detect bearing temperature; and one second axle temperature sensor is installed on each side of each axle gearbox to detect axle gearbox temperature.

[0039] It should be noted that infrared temperature sensors 1 are installed at the wheel flanges 2 of each wheel level to monitor the tread temperature of each wheel. First axle temperature sensors are installed at each axle box level to monitor the temperature of each bearing. Second axle temperature sensors are installed at each gearbox level to monitor the temperature of each gearbox. Correspondingly, tread acquisition boxes are installed at each axle 3 level to collect the monitoring values ​​of the infrared temperature sensors 1, first axle temperature sensors, and second axle temperature sensors located at the corresponding level.

[0040] It should be noted that the first, second, and third shaft temperature sensors can be the same type of contact sensor or different types of contact sensors, as long as they can measure temperature.

[0041] refer to Figure 1 and Figure 2 In one embodiment, the system also includes a display, which is electrically connected to the host. Two displays are provided, one at each end of the host. The displays are responsible for receiving and displaying data sent by the host, and can provide audible and visual alarms. They also have an alarm cancellation button and a resistive touch function.

[0042] It should be noted that a public screen can also be set up to display the data shown on the monitor.

[0043] refer to Figure 1 and Figure 2 As one implementation method, the monitor is equipped with a USB dump interface, which can be used to dump the record files to a ground computer using a USB flash drive.

[0044] After the log files are imported into the ground computer via USB drive, they can be analyzed and processed using background analysis software. This allows for the saving, statistics, analysis, and printing of the log files, and, in conjunction with historical data, comprehensive analysis can identify and assess wheels and bearings with potential risks.

[0045] refer to Figure 1 and Figure 2 As one implementation method, an alarm system is also included. The alarm system is electrically connected to the host. By setting the alarm system, over-temperature alarms can be set for each infrared temperature sensor 1, the first shaft temperature sensor, and the second shaft temperature sensor. When the shaft temperature or temperature rise exceeds its alarm set value, an audible and visual alarm can be issued. The alarm will be automatically deactivated when the temperature is lower than the alarm set value. When the equipment detects abnormal conditions such as sensor detachment or short circuit, an audible and visual alarm can be issued until the alarm is manually deactivated.

[0046] refer to Figure 2 In one implementation, the alarm system is an audible and visual alarm, which is electrically connected to the host computer, and the host computer controls the operation of the audible and visual alarm.

[0047] This utility model also has the functions of axle temperature monitoring, display and alarm for multi-section vehicle networking. When multiple vehicle networking is used, the ambient temperature is averaged to unify the ambient temperature value. It can also record data such as the temperature of each axle box, wheel tread, gearbox and vehicle speed of each vehicle in real time during the driving process. Historical temperature alarm information can be queried through the vehicle display. The alarm information includes location, temperature, ambient temperature, vehicle number, alarm time and alarm type.

[0048] Operating environment conditions are as follows: Power supply: DC24V, fluctuation range DC12~36V; Operating environment: inside a large road maintenance machinery vehicle; Operating temperature: -25℃~+70℃; Storage temperature: -40℃~+70℃; Altitude: ≤2500 meters; Relative humidity: ≤95% (monthly average minimum temperature 25℃).

[0049] This invention employs a non-contact method to monitor wheel tread temperature in real time, offering advantages such as high real-time monitoring, convenient maintenance, and intelligent data analysis. Intelligent analysis of monitoring data can guide targeted maintenance, avoiding blind wheel replacement and extending wheel lifespan. Automated monitoring replaces traditional manual inspections, reducing labor and time costs. Monitoring data can help adjust braking strategies or wheelset refining plans, optimizing tread wear distribution. Long-term data accumulation provides a basis for the full lifecycle management of vehicle wheelsets.

[0050] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0051] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered as exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. Apparatus for non-contact monitoring of wheel tread temperature of large road maintenance machine vehicles, characterized in that, The system includes a main unit, a tread acquisition box and a temperature compensation system electrically connected to the main unit, and a temperature sensor electrically connected to the tread acquisition box. The temperature sensor is mounted on the bogie frame and positioned directly opposite the wheel flange. The temperature sensor is used to monitor the wheel flange temperature, and the temperature compensation system is used to compensate for the wheel flange temperature and obtain the tread temperature.

2. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 1, wherein, The straight-line distance between the temperature sensor and the wheel rim is 20cm to 40cm.

3. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 1, wherein, The temperature sensor is an infrared temperature sensor.

4. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 1, wherein, It also includes a first axle temperature sensor installed on the wheelset axle box for monitoring bearing temperature, a second axle temperature sensor installed on the wheel gearbox for monitoring axle gearbox temperature, and a third axle temperature sensor installed on the bogie frame for monitoring ambient temperature.

5. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 4, wherein, Two first axle temperature sensors are provided, and the two first axle temperature sensors are respectively located on both sides of the wheelset axle box. Two second axle temperature sensors are provided, and the two second axle temperature sensors are respectively located on both sides of the wheel gear box.

6. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 5, wherein, Each wheel axle box is equipped with a first axle temperature sensor, and each wheel gearbox is equipped with a second axle temperature sensor.

7. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 1, wherein, It also includes a display, which is electrically connected to the host.

8. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 7, wherein, The display is equipped with a USB transfer interface.

9. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 1, wherein, It also includes an alarm system, which is electrically connected to the host.

10. The apparatus for non-contact monitoring of large road maintenance machine vehicle wheel tread temperature of claim 9, wherein, The alarm system is an audible and visual alarm.

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