Braking state monitoring system for self-wheel running special equipment

Abstract

The utility model discloses a self-wheel running special equipment braking state monitoring system, which comprises a non-contact temperature detection component for measuring the temperature of a brake shoe and the temperature of a wheel tread, and a temperature data acquisition component and a temperature control component which are electrically connected with the non-contact temperature detection component in sequence, the temperature control component is used for giving an alarm when the collected brake shoe temperature and the collected wheel tread temperature are larger than a preset temperature threshold value. According to the braking state monitoring system for the self-wheel running special equipment, related personnel can be reminded when the temperature of the wheel tread or the temperature of the brake shoe is too high at the same time, tread faults and braking failure risks caused by the too high temperature of the wheel tread and the brake shoe are avoided, and the driving safety is better guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of safety of self-propelled special equipment, and more specifically, to a braking state monitoring system for self-propelled special equipment. Background Art

[0002] When self-propelled special equipment such as large track maintenance machines runs on railway lines, braking reliability is closely related to train operation safety. Especially when running on long and steep gradient lines, continuous long-time braking is required to control the speed. During braking, braking force is applied to the tread of the vehicle through brake shoes, which causes the temperatures of the brake shoes and the vehicle tread to rise rapidly, resulting in the following train operation safety hazards: First, the wear of the vehicle tread is aggravated, and tread faults such as cracks and peeling occur, and even the wheel may burst. Second, after the temperature of the brake shoes rises to a certain level, it will affect the braking performance of the vehicle, resulting in the risk of braking failure.

[0003] A current method for monitoring the temperature of brake shoes is as follows: A temperature measuring sensor is installed on the sensor mounting plate of the bogie tie rod seat near the gap between the wheel and the brake shoe to monitor the temperature of the brake shoe. During the operation and braking of the vehicle, the temperature measuring sensor continuously monitors the temperature of the brake shoe, and transmits the signal to the control host through the AI module. The control host converts the signal into temperature and transmits it to the display screen for real-time display. When the temperature reaches a preset threshold, the control host sends an instruction to the alarm device to output an alarm signal. This method has the following disadvantages: During continuous braking on an actual long and steep gradient, the temperature rise of the wheel is significantly greater than that of the brake shoe. Using the temperature of the brake shoe as the basis for judgment has a large error. Moreover, the temperature measuring device is installed between the bogie tie rod seat and the vehicle frame. This position can be achieved under specific vehicle models and specific wheel specifications. However, when the diameter of the wheel changes, the gap of the tie rod seat cannot monitor the gap position between the tread and the brake shoe, resulting in poor versatility of this method. The current method for monitoring the temperature of the vehicle tread is to set a number of infrared temperature measuring probes distributed at intervals along the track direction beside the track. The side temperatures of the wheel rims at different positions in the circumferential direction of the wheel can be measured through the number of infrared temperature measuring probes distributed at intervals, so that the wheel tread temperatures at different positions in the circumferential direction of the wheel can be calculated. The disadvantage of this solution is that the detection system is located at a fixed position beside the track, and the temperature of the tread can only be detected when the vehicle passes by, so the applicability is poor. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a braking state monitoring system for self-propelled special equipment, which can remind relevant personnel when the temperature of the vehicle tread or the brake shoe is too high at the same time, avoid tread faults and the risk of braking failure caused by too high temperatures of the vehicle tread and the brake shoe, and better ensure the safety of train operation.

[0005] A braking state monitoring system for self - propelled special equipment provided by the utility model includes a non - contact temperature detection component for measuring the brake shoe temperature and the wheel tread temperature, a temperature data acquisition component and a temperature control component that are electrically connected to the non - contact temperature detection component in sequence. The temperature control component is used to give an alarm when the collected brake shoe temperature and the wheel tread temperature are greater than a preset temperature threshold.

[0006] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, a temperature display component electrically connected to the temperature control component is further included.

[0007] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, the non - contact temperature detection component includes a first infrared temperature sensor for measuring the brake shoe temperature and a second infrared temperature sensor for measuring the wheel tread temperature.

[0008] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, the non - contact temperature detection component is an infrared thermal imaging sensor for simultaneously measuring the brake shoe temperature and the wheel tread temperature.

[0009] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, at least two of the above - mentioned infrared temperature sensors are arranged on each axle that generates a braking effect during high - speed operation to monitor the temperatures of the tread and brake shoe of at least one wheel.

[0010] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, the first infrared temperature sensor is arranged on the side surface close to the friction surface of the brake shoe, and the second infrared temperature sensor is arranged on the outer rim surface and / or inner rim surface of the wheel rim close to the wheel tread. And the closest distance range between the center line of the second infrared temperature sensor and the outer edge of the wheel rim is from 0 mm to 10 mm, and the closest distance range between the detection surface of the second infrared temperature sensor and the rim surface of the wheel rim is from 2 mm to 20 mm.

[0011] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, at least one of the above - mentioned infrared thermal imaging sensors is arranged on each axle that generates a braking effect during high - speed operation to monitor the temperatures of the tread and brake shoe of at least one wheel.

[0012] Preferably, in the above - mentioned braking state monitoring system for self - propelled special equipment, the infrared thermal imaging sensor is arranged at the outer rim surface of the wheel rim and the position of the brake shoe that simultaneously face the wheel tread and the contact surface of the brake shoe. And the distance range between the detection surface of the infrared thermal imaging sensor and the rim surface of the wheel rim and the side surface of the brake shoe is from 10 mm to 100 mm.

[0013] Preferably, in the above-mentioned monitoring system for the braking state of self-propelled special equipment, the temperature data acquisition component includes a data acquisition core board, a plurality of sensor interfaces and a plurality of first bus interfaces communicatively connected to the data acquisition core board, and a first power supply interface electrically connected to the data acquisition core board. The temperature control component includes a monitoring host core board, a touch screen communicatively connected to the monitoring host core board, a plurality of first indicator lights, a first buzzer, a storage unit, a data export interface, a host maintenance interface, a plurality of data display bus interfaces, a second power supply interface electrically connected to the monitoring host core board, and a host power switch provided on the monitoring host core board.

[0014] Preferably, in the above-mentioned monitoring system for the braking state of self-propelled special equipment, the temperature display component includes a display device core board, a display screen communicatively connected to the display device core board, a plurality of second indicator lights, a second buzzer, operation buttons, a second bus interface, and a third power supply interface electrically connected to the display device core board.

[0015] As can be seen from the above technical solutions, the above-mentioned monitoring system for the braking state of self-propelled special equipment provided by the present utility model includes a non-contact temperature detection component for measuring the brake shoe temperature and the wheel tread temperature, a temperature data acquisition component and a temperature control component sequentially and electrically connected to the non-contact temperature detection component. The temperature control component is used to give an alarm when the collected brake shoe temperature and the wheel tread temperature are greater than a preset temperature threshold. Therefore, it can remind relevant personnel when the wheel tread temperature or the brake shoe temperature is too high, avoid the risk of tread failure and braking failure caused by too high wheel tread and brake shoe temperatures, and better ensure the safety of train operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0017] Figure 1 Schematic diagram of an embodiment of a monitoring system for the braking state of self-propelled special equipment provided by the present utility model;

[0018] Figure 2 Schematic diagram of a specific embodiment of a monitoring system for the braking state of self-propelled special equipment;

[0019] Figure 3Schematic diagram of the installation of two infrared temperature sensors for separately measuring the temperature of brake shoes and wheel treads;

[0020] Figure 4 Schematic cross - sectional view of the wheel structure;

[0021] Figure 5 Schematic diagram of the installation of an infrared thermal imaging sensor for simultaneously measuring the temperature of brake shoes and wheel treads;

[0022] Figure 6 Schematic diagram of the composition of the temperature data acquisition component;

[0023] Figure 7 Schematic diagram of the composition of the temperature control component;

[0024] Figure 8 Schematic diagram of the composition of the temperature display component. Detailed implementation manners

[0025] The core of the present utility model is to provide a monitoring system for the braking state of self - propelled special equipment, which can remind relevant personnel when the temperature of the wheel tread or the brake shoe is too high, avoid the risks of tread failures and braking failures caused by excessive temperatures of the wheel tread and brake shoes, and better ensure the safety of train operation.

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the scope of protection of the present utility model.

[0027] An embodiment of a monitoring system for the braking state of self - propelled special equipment provided by the present utility model is as Figure 1 shown, Figure 1 Schematic diagram of an embodiment of a monitoring system for the braking state of self - propelled special equipment provided by the present utility model. The monitoring system for the braking state of self - propelled special equipment may include a non - contact temperature detection component 1 for measuring the temperature of brake shoes and wheel treads, a temperature data acquisition component 2 and a temperature control component 3 that are electrically connected to the non - contact temperature detection component 1 in sequence. The temperature control component 3 is used to give an alarm when the collected temperatures of the brake shoes and wheel treads are greater than a preset temperature threshold.

[0028] It should be noted that since opening holes in the brake shoe will affect its structural performance and the wheel tread is a moving part, neither of them is suitable for using a contact measurement method to monitor temperature. Therefore, this solution uses a non-contact temperature detection component for temperature detection, that is, this temperature detection component will not come into contact with the brake shoe and the wheel tread, but is spaced apart by a certain distance, so as not to affect the rotation of the wheel and the action of the brake shoe. Moreover, the above-mentioned temperature data acquisition component 2 can be installed, but not limited to, in the cab of a large track maintenance machine or on the vehicle body, and multiple non-contact temperature detection components 1 can be connected through multiple cables to achieve the function of data acquisition. In addition, the above-mentioned temperature control component 3 can be installed, but not limited to, in the cab of a large track maintenance machine, and is communicatively connected to the temperature data acquisition component 2 through a bus or Ethernet. When any one of the brake shoe temperature and the wheel tread temperature collected is greater than a preset temperature threshold, an alarm can be issued, so that a more comprehensive and accurate alarm can be issued without missing any overheating situation in any part.

[0029] As can be seen from the above technical solution, in the embodiment of the self-propelled special equipment braking state monitoring system provided by the present invention, since it includes a non-contact temperature detection component for measuring the brake shoe temperature and the wheel tread temperature, a temperature data acquisition component and a temperature control component that are electrically connected to the non-contact temperature detection component in sequence, and the temperature control component is used to issue an alarm when the collected brake shoe temperature and wheel tread temperature are greater than a preset temperature threshold, it is possible to remind relevant personnel when the wheel tread temperature or the brake shoe temperature is too high at the same time, avoiding the risk of tread failure and braking failure caused by too high wheel tread and brake shoe temperatures, and better ensuring the safety of train operation.

[0030] In a specific embodiment of the above self-propelled special equipment braking state monitoring system, referring to Figure 2 , Figure 2 is a schematic diagram of a specific embodiment of the self-propelled special equipment braking state monitoring system. The system may further include a temperature display component 4 electrically connected to the temperature control component 3. The temperature display component 4 can be installed, but not limited to, in the cab of a large track maintenance machine, and can be communicatively connected to the temperature control component 3 through bus communication or Ethernet communication. Moreover, multiple temperature display components 4 can be communicatively connected through bus communication to expand the number of temperature display components, so that more people can see the current temperature value and see and / or hear the alarm signal.

[0031] In another specific embodiment of the above self-propelled special equipment braking state monitoring system, referring to Figure 3 , Figure 3Schematic diagram of the installation of two infrared temperature sensors for separately measuring the temperature of the brake shoe and the wheel tread. The above non-contact temperature detection component 1 may include a first infrared temperature sensor 11 for measuring the temperature of the brake shoe and a second infrared temperature sensor 12 for measuring the temperature of the wheel tread. Specifically, the Figure 3 shows the wheel 5, the wheel tread 6, the brake shoe 7, and the wheel rim 8. A preferred installation method is as follows: The first infrared temperature sensor 11 is arranged on the side surface close to the friction surface of the brake shoe 7, and the second infrared temperature sensor 12 is arranged on the outer rim surface and / or the inner rim surface of the wheel rim 8 close to the wheel tread 6. This position does not contact the rail surface, has a metal oxide layer and a relatively large roughness, which is suitable for infrared temperature measurement, and is relatively close to the vehicle tread. After the vehicle runs for a long time, the temperature of the wheel tread can be evenly conducted to this position, making the temperature at this position the same as the temperature of the wheel tread. Moreover, the installation position can be any suitable position on the circumference, and the range of the closest distance between the center line of the second infrared temperature sensor 12 and the outer edge of the wheel rim 8 can be preferably 0 mm to 10 mm, and the range of the closest distance between the detection surface of the second infrared temperature sensor 12 and the rim surface of the wheel rim 8 can be preferably 2 mm to 20 mm. Refer to Figure 4 , Figure 4 is a schematic cross-sectional view of the wheel structure, which includes the outer rim surface 81 and the inner rim surface 82 of the wheel rim. An outer second infrared temperature sensor 121 facing the outer rim surface 81 of the wheel rim can be installed, so that the temperature of the outer rim surface can be monitored to estimate the temperature of the wheel tread 6, and an inner second infrared temperature sensor 122 facing the inner rim surface 82 of the wheel rim can be installed, so that the temperature of the inner rim surface can be monitored to estimate the temperature of the wheel tread 6. The two can be set separately or simultaneously. Since both the inner and outer sides are in contact with the wheel tread 6, after the temperature of the wheel tread 6 rises, it will also be conducted to these two positions. Therefore, it is possible to judge whether the temperature of the wheel tread exceeds a certain limit according to the detection of these two positions, and an alarm will be issued when the limit is exceeded to avoid dangerous situations. It should also be noted that the output signal type of the infrared temperature sensor can be a voltage signal, a current signal, or a digital signal output by RS485 communication. Further, at least two infrared temperature sensors are arranged on each axle that generates braking action during high-speed operation to monitor the temperature of the tread and brake shoe of at least one wheel.

[0032] In another specific embodiment of the above self-propelled special equipment braking state monitoring system, refer to Figure 5 , Figure 5Schematic diagram of the installation of an infrared thermal imaging sensor for simultaneously measuring the temperature of brake shoes and wheel treads. The non-contact temperature detection component 1 is an infrared thermal imaging sensor 13 for simultaneously measuring the temperature of the brake shoe 7 and the wheel tread 6. Further, the infrared thermal imaging sensor 13 is preferably arranged at the outer rim surface 81 of the wheel rim and the position of the brake shoe 7 that simultaneously faces the contact surface between the wheel tread 6 and the brake shoe 7. Moreover, the distance range between the detection surface of the infrared thermal imaging sensor and the wheel rim surface of the wheel and the side surface of the brake shoe is from 10 mm to 100 mm. It should be noted here that since the imaging area of the infrared thermal imaging sensor is much larger than that of the infrared temperature sensor, the temperature of the outer rim surface of the wheel rim and the brake shoe at the contact surface position between the vehicle tread and the brake shoe can be monitored simultaneously, and in this way, the cost is relatively low. The output signal type of the infrared thermal imaging sensor can be a digital signal output by RS485 communication or Ethernet communication. Further, at least one infrared thermal imaging sensor 13 is preferably arranged on each axle that generates braking action during high-speed operation to monitor the temperature of the tread and brake shoe of at least one wheel.

[0033] In a preferred embodiment of the above-mentioned monitoring system for the braking state of self-propelled special equipment, refer to Figure 6 , Figure 6 Schematic diagram of the composition of the temperature data acquisition component. The temperature data acquisition component 2 may include a data acquisition core board 21, a plurality of sensor interfaces 22 and a plurality of first bus interfaces 23 that are communicatively connected to the data acquisition core board 21, and a first power interface 24 that is electrically connected to the data acquisition core board 21. Among them, the specific data acquisition core board may be a CPU chip or a single-chip microcomputer chip. When the temperature sensor outputs a voltage or current signal, the temperature data acquisition component converts it into temperature data. If the temperature sensor outputs a digital signal through RS485 communication, an industrial edge gateway is used as the temperature data acquisition component to collect the digital signal output by the temperature sensor through RS485 communication; the temperature data acquisition component and the temperature control component can be connected through a bus or Ethernet; multiple temperature data acquisition components can be connected through a bus for expanding the number of temperature data acquisition components.

[0034] Refer to Figure 7 , Figure 7It is a schematic diagram of the composition of the temperature control component. The temperature control component 3 may include a monitoring host core board 31, a touch screen 32 communicatively connected to the monitoring host core board 31, a plurality of first indicator lights 33, a first buzzer 34, a storage unit 35, a data export interface 36, a host maintenance interface 37, a plurality of data display bus interfaces 38, a second power interface 39 electrically connected to the monitoring host core board 31, and a host power switch 30 provided on the monitoring host core board 31. Specifically, the monitoring host core board 31 may be a CPU chip or a single-chip microcomputer chip, and the touch screen 32 may be a resistive or capacitive touch screen. A temperature monitoring system software can run on this temperature control component, and its functions may include: system parameter setting, data display, data storage, data export, temperature overrun judgment, alarm reminder, alarm confirmation, alarm silencing, etc.

[0035] In addition, referring to Figure 8 , Figure 8 It is a schematic diagram of the composition of the temperature display component. The above-mentioned temperature display component 4 may include a display device core board 41, a display screen 42 communicatively connected to the display device core board 41, a plurality of second indicator lights 43, a second buzzer 44, operation buttons 45, a second bus interface 46, and a third power interface 47 electrically connected to the display device core board 41. Specifically, the display device core board 41 may be a CPU chip or a single-chip microcomputer chip. A data display software can run on it, and its functions may include: data display, emitting an audible and visual alarm signal, confirming an alarm, etc.

[0036] In summary, the above-mentioned monitoring system for the braking state of self-propelled special equipment can perform real-time monitoring and temperature-overhigh alarm reminder on the braking state of self-propelled special equipment, especially the temperature of the wheel tread and brake shoe, avoiding the risks of wheel tread failures and braking failures caused by overhigh temperatures of the vehicle wheel tread and brake shoe during train operation on long gradient lines, extending the service life of the wheel tread and brake shoe, and ensuring train operation safety. Since this system is vehicle-mounted, it is not restricted by location during operation, can continuously and accurately monitor the temperature of the wheel tread and brake shoe, and remind the driver and operating personnel. Moreover, this system is designed based on an infrared temperature sensor or an infrared thermal imaging sensor. Therefore, when monitoring the temperature of the wheel rim surface with an oxide layer and high roughness, it can avoid directly measuring the shiny wheel tread, improving the accuracy of temperature measurement.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A monitoring system for the braking state of special equipment with self-propelled operation, characterized in that, It includes a non-contact temperature detection component for measuring the brake shoe temperature and the wheel tread temperature, a temperature data acquisition component and a temperature control component that are electrically connected to the non-contact temperature detection component in sequence. The temperature control component is used to give an alarm when the collected brake shoe temperature and the wheel tread temperature are greater than a preset temperature threshold.

2. The braking state monitoring system for self-propelled special equipment according to claim 1, characterized in that, It further includes a temperature display component electrically connected to the temperature control component.

3. The braking state monitoring system for self-propelled special equipment according to claim 1, characterized in that, The non-contact temperature detection component includes a first infrared temperature sensor for measuring the brake shoe temperature and a second infrared temperature sensor for measuring the wheel tread temperature.

4. The braking state monitoring system for self-propelled special equipment according to claim 1, characterized in that, The non-contact temperature detection component is an infrared thermal imaging sensor for simultaneously measuring the brake shoe temperature and the wheel tread temperature.

5. The braking state monitoring system for self-propelled special equipment according to claim 3, characterized in that At least two of the infrared temperature sensors are provided on each axle that generates braking action during high-speed operation to monitor the temperatures of the tread and brake shoe of at least one wheel.

6. The braking state monitoring system for self-propelled special equipment according to claim 3, characterized in that The first infrared temperature sensor is disposed on the side surface close to the friction surface of the brake shoe. The second infrared temperature sensor is disposed on the outer rim surface and / or the inner rim surface of the wheel rim close to the wheel tread. The closest distance range between the center line of the second infrared temperature sensor and the outer edge of the wheel rim is 0 mm to 10 mm, and the closest distance range between the detection surface of the second infrared temperature sensor and the rim surface of the wheel rim is 2 mm to 20 mm.

7. The braking state monitoring system for self-propelled special equipment according to claim 4, wherein At least one of the infrared thermal imaging sensors is provided on each axle that generates braking action during high-speed operation to monitor the temperatures of the tread and brake shoe of at least one wheel.

8. The braking state monitoring system for self-propelled special equipment according to claim 7, characterized in that, The infrared thermal imaging sensor is disposed at the position of the outer rim surface of the wheel rim and the brake shoe that simultaneously faces the wheel tread and the contact surface of the brake shoe. The distance range between the detection surface of the infrared thermal imaging sensor and the rim surface of the wheel rim and the side surface of the brake shoe is 10 mm to 100 mm.

9. The braking state monitoring system for self-propelled special equipment according to any one of claims 1-8, characterized in that, The temperature data acquisition component includes a data acquisition core board, a plurality of sensor interfaces and a plurality of first bus interfaces communicatively connected to the data acquisition core board, and a first power interface electrically connected to the data acquisition core board. The temperature control component includes a monitoring host core board, a touch screen communicatively connected to the monitoring host core board, a plurality of first indicator lights, a first buzzer, a storage unit, a data export interface, a host maintenance interface, a plurality of data display bus interfaces, a second power interface electrically connected to the monitoring host core board, and a host power switch provided on the monitoring host core board.

10. The braking state monitoring system for self-propelled special equipment according to claim 2, characterized in that, The temperature display component includes a display device core board, a display screen, a plurality of second indicator lights, a second buzzer, operation buttons and a second bus interface communicatively connected to the display device core board, and a third power interface electrically connected to the display device core board.

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