High-voltage detection safety protection alarm device for overhead line system maintenance car

Abstract

The utility model discloses a high-voltage detection safety protection alarm device for an overhead line system maintenance car. The high-voltage detection safety protection alarm device comprises a voltage detection probe, a signal processor, an alarm terminal and a hydraulic electromagnetic valve, the voltage detection probe is used for detecting the voltage of a contact network above a vehicle in real time; the input end of the signal processor is connected with the voltage detection probe, the output end of the signal processor is connected with the hydraulic electromagnetic valve, and the signal processor is used for controlling the hydraulic electromagnetic valve to be connected or disconnected according to the detected voltage; the alarm terminal is electrically connected with the signal processor and is used for displaying the voltage information and sending an alarm signal when the voltage is higher than the human body safety voltage; the hydraulic electromagnetic valve is used for cutting off a hydraulic power source of the work platform when receiving the alarm signal, and the work platform is prevented from ascending and descending. Through real-time voltage monitoring, safety control and stable power supply, the safety and operation efficiency of the overhead line system maintenance operation vehicle are effectively improved.

Description

Technical Field

[0001] This application belongs to the field of railway catenary maintenance technology, and specifically relates to a high-voltage detection safety protection alarm device for catenary maintenance vehicles. Background Technology

[0002] As a crucial component of electrified railways, the overhead contact system directly impacts the safety and efficiency of railway operations. Maintenance vehicles play a vital role in the routine inspection and maintenance of the contact system. These vehicles not only transport maintenance personnel to designated locations but also ensure their safety during the maintenance process. However, in actual operations, even if the contact system is de-energized before maintenance, residual voltage, false alarms, and other factors can still pose a risk of electric shock to personnel, potentially leading to falls and seriously threatening their lives. This also presents significant safety hazards to railway operations.

[0003] Traditionally, safety assurance during overhead contact line maintenance operations has relied primarily on manual voltage testing and grounding measures. However, these measures are susceptible to human error, leading to risks of false alarms and missed alarms. In recent years, high-voltage detection technology has been successfully applied in areas such as high-speed rail overhead contact line inspection vehicles, providing new solutions for safety protection during overhead contact line maintenance operations. Therefore, it is necessary to develop a high-voltage detection safety protection alarm device for overhead contact line maintenance vehicles, replacing traditional human-based measures with technological safeguards to reduce safety risks at the source during operations. Utility Model Content

[0004] The purpose of this application is to provide a high-voltage detection safety protection alarm device for overhead contact line maintenance vehicles. This addresses the problems mentioned in the background art, such as the risk of electric shock to workers due to residual voltage, false alarms, etc., and the risks of false alarms and missed alarms associated with traditional manual voltage testing and grounding measures, which seriously threaten the lives of workers and pose significant safety hazards to railway operations.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] A safety protection alarm device for high voltage detection in a contact network maintenance vehicle includes a voltage detection probe, a signal processor, an alarm terminal, and a hydraulic solenoid valve.

[0007] The voltage detection probe is used to detect the voltage of the overhead contact line above the vehicle in real time.

[0008] The input terminal of the signal processor is connected to the voltage detection probe, and the output terminal is connected to the hydraulic solenoid valve, for controlling the opening or closing of the hydraulic solenoid valve according to the detected voltage;

[0009] The alarm terminal is electrically connected to the signal processor and is used to display voltage information and issue an alarm signal when the voltage is higher than the safe voltage for the human body.

[0010] The hydraulic solenoid valve is used to cut off the hydraulic power source of the work platform when an alarm signal is received, so as to prevent the work platform from lifting or lowering.

[0011] In one possible implementation, the human safety voltage is set to 36V;

[0012] When the detected contact wire voltage is higher than 36V, the alarm terminal issues a high voltage danger alarm signal, the hydraulic solenoid valve loses power, and the working platform loses power.

[0013] When the detected contact wire voltage is below 36V, the hydraulic solenoid valve is energized, and the working platform becomes powered.

[0014] In one possible implementation, the voltage detection probe employs a non-contact detection method.

[0015] In one possible implementation, a power supply module is also included, which provides a stable operating voltage for the voltage detection probe, signal processor, alarm terminal, and hydraulic solenoid valve.

[0016] In one possible implementation, the power module uses a DC 24V power supply.

[0017] In one possible implementation, the alarm terminal includes a display screen and indicator lights;

[0018] The display screen is used to display voltage information in real time;

[0019] The indicator light is used to issue a visual alarm signal when the voltage is higher than the safety threshold.

[0020] In one possible implementation, the indicator light includes a red light and a green light;

[0021] The red light flashes when the voltage is higher than the safety threshold.

[0022] The green light illuminates when the voltage is below a safe threshold.

[0023] In one possible implementation, a control circuit is also included for transmitting the voltage signal processed by the signal processor to the alarm terminal and the hydraulic solenoid valve.

[0024] In one possible implementation, the voltage detection probe, signal processor, alarm terminal, and hydraulic solenoid valve are all modularly designed.

[0025] In one possible implementation, a data storage module is also included, which is connected to the signal processor and is used to record voltage data and alarm information for each detection.

[0026] Compared with the prior art, this application has the following beneficial effects:

[0027] This application provides a high-voltage detection safety protection alarm device for overhead contact line maintenance vehicles. By integrating mature high-voltage detection technology, it achieves real-time live monitoring of the environment above the work platform, significantly improving operational safety. The signal processor design ensures that the hydraulic power source of the work platform can be immediately cut off upon detecting a live condition, effectively preventing live work and fundamentally reducing the risk of electric shock. Simultaneously, the intuitive alarm terminal allows operators to quickly obtain overhead contact line voltage information and alarm status, facilitating safety judgments. The automated detection and judgment mechanism reduces human error, further enhancing operational safety and reliability.

[0028] In one possible implementation, real-time monitoring of the overhead contact line voltage effectively avoids the risks of live-line work, significantly improving the safety of workers. Simultaneously, the device is easy to operate and maintain, and can intuitively display voltage information and alarm status, providing reliable safety assurance for overhead contact line maintenance work.

[0029] In one possible implementation, the alarm terminal provides clear safety information to workers through an intuitive display screen and indicator lights. When the voltage exceeds the safety threshold, a flashing red light alerts workers to be cautious, while a green light indicates that the current voltage is within a safe range and work can proceed. This intuitive alarm method helps workers react quickly and avoid electric shock accidents.

[0030] In one possible implementation, modular design improves the flexibility and scalability of the entire device. When a module fails, it can be quickly replaced without replacing the entire device. This design reduces maintenance costs and improves operational efficiency.

[0031] In one possible implementation, the data storage module provides operators with detailed detection data and alarm records, which helps in analyzing safety issues during operations and taking corresponding improvement measures. Simultaneously, data encryption measures ensure data security and prevent data leakage and misuse. Attached Figure Description

[0032] Figure 1 This application provides a schematic diagram of the control process for a high-voltage detection safety protection alarm device for overhead contact line maintenance vehicles.

[0033] The attached diagram is labeled as follows: 1. Voltage detection probe; 2. Signal processor; 3. Alarm terminal; 4. Hydraulic solenoid valve; 5. Power supply module. Detailed Implementation

[0034] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0035] like Figure 1 As shown, this application discloses a safety protection alarm device for high voltage detection in a contact network maintenance vehicle, comprising a voltage detection probe 1, a signal processor 2, an alarm terminal 3, and a hydraulic solenoid valve 4.

[0036] This voltage detection probe 1, with its high sensitivity and fast response speed, is used to detect voltage changes in the overhead contact line above vehicles in real time.

[0037] Specifically, the voltage detection probe 1 is installed on the top of the overhead contact line maintenance vehicle to ensure accurate and real-time detection of the voltage of the overhead contact line above the vehicle.

[0038] The input terminal of the signal processor 2 is connected to the voltage detection probe 1, and the output terminal is connected to the hydraulic solenoid valve 4. It is used to control the opening or closing of the hydraulic solenoid valve 4 according to the detected voltage and is responsible for processing the detected voltage information.

[0039] Specifically, the processor uses advanced algorithms to process and analyze voltage data, and can accurately determine whether the voltage exceeds the safe voltage threshold for the human body.

[0040] The alarm terminal 3 is electrically connected to the signal processor 2 and is used to display voltage information and issue an alarm signal when the voltage is higher than the safe voltage for the human body.

[0041] The hydraulic solenoid valve 4 is electrically connected to the alarm terminal 3 and is used to cut off the hydraulic power source of the work platform when an alarm signal is received, so as to prevent the work platform from lifting or lowering.

[0042] In this embodiment, by integrating mature high-voltage detection technology, real-time live monitoring of the environment above the work platform is achieved, significantly improving operational safety. The design of the signal processor 2 ensures that the hydraulic power source of the work platform can be immediately cut off when a live condition is detected, effectively preventing live work and fundamentally reducing the risk of electric shock. Simultaneously, the intuitive alarm terminal 3 allows operators to quickly obtain contact network voltage information and alarm status, facilitating safety judgments. The automated detection and judgment mechanism reduces human error, further enhancing operational safety and reliability.

[0043] In summary, this high-voltage detection safety protection alarm device for overhead contact line maintenance vehicles significantly improves the safety and efficiency of overhead contact line maintenance operations.

[0044] In one possible embodiment, the human safety voltage is set to 36V. When the detected contact network voltage is higher than 36V, the alarm terminal 3 issues a high-voltage danger alarm signal, and the hydraulic solenoid valve 4 is de-energized.

[0045] When the detected contact network voltage is lower than 36V, the hydraulic solenoid valve 4 is energized.

[0046] In this embodiment, by monitoring the overhead contact line voltage in real time, the risks of live-line work are effectively avoided, significantly improving the safety of workers. At the same time, the device is easy to operate and maintain, and can intuitively display voltage information and alarm status, providing reliable safety assurance for overhead contact line maintenance work.

[0047] In one possible embodiment, the voltage detection probe 1 employs a non-contact detection method.

[0048] Specifically, a non-contact voltage detection probe 1 was used. This voltage detection probe 1 uses the principle of electromagnetic induction, and can measure the voltage value in real time and accurately without direct contact with the contact wire. The voltage detection probe 1 is installed in an appropriate position on the work vehicle to ensure full coverage of the contact wire above the work area.

[0049] When the voltage detection probe 1 detects that the voltage of the contact network is higher than the preset human safety voltage threshold (36V), the alarm function will be activated immediately. The alarm terminal 3 will issue a clear "high voltage danger" alarm signal. At the same time, the hydraulic solenoid valve 4 will automatically de-energize, cutting off the hydraulic power source of the work platform to prevent the work platform from being lifted or lowered while energized.

[0050] Conversely, if the contact network voltage detected by voltage detection probe 1 is lower than 36V, the hydraulic solenoid valve 4 will be energized normally, allowing the work platform to perform lifting operations within a safe voltage range.

[0051] In this embodiment, the application of the non-contact voltage detection probe 1 in the overhead contact line maintenance vehicle significantly improves operational safety and reduces the risk of electric shock. It utilizes the principle of electromagnetic induction to achieve real-time and accurate measurement, providing reliable data for the device and ensuring precise alarm and control. Simultaneously, the voltage detection probe 1 is not easily worn or contaminated, is easy to maintain, and is inexpensive. Furthermore, the device is highly compatible, suitable for various vehicle types, and can achieve safety protection without significant modifications.

[0052] In one possible embodiment, a power supply module 5 is also included, which provides a stable operating voltage for the voltage detection probe 1, the signal processor 2, the alarm terminal 3, and the hydraulic solenoid valve 4.

[0053] The power module 5 incorporates multiple safety mechanisms, including overvoltage protection, overcurrent protection, and short-circuit protection, to prevent equipment damage or safety accidents caused by abnormal power fluctuations or external interference. Furthermore, to enhance system reliability and flexibility, the power module 5 is designed with redundancy backup, automatically switching to the backup power supply in the event of a main power failure, ensuring the continuous and stable operation of the entire alarm device.

[0054] In this embodiment, the integrated design of the power module 5 significantly enhances the performance and stability of the entire device, providing a safer and more reliable guarantee for overhead contact line maintenance operations.

[0055] In one possible embodiment, the power module 5 uses a DC 24V power supply.

[0056] In one possible embodiment, the alarm terminal 3 may include a display screen and indicator lights, the display screen being used to display voltage information in real time.

[0057] Specifically, the display screen can be a 7-inch LCD screen with a resolution of 800*480 and a refresh rate of 1Hz, displaying real-time voltage, historical maximum values, and alarm status.

[0058] The indicator light can include a red light and a green light. The red light flashes when the voltage is higher than the safety threshold, and the green light lights up when the voltage is lower than the safety threshold, which is 36V.

[0059] In this embodiment, the alarm terminal 3 provides clear safety information to workers through an intuitive display screen and indicator lights. When the voltage exceeds the safety threshold, a flashing red light reminds workers to pay attention to safety, while a lit green light indicates that the current voltage is within the safe range and work can proceed. This intuitive alarm method helps workers react quickly and avoid electric shock accidents.

[0060] In one possible embodiment, a control circuit is also included for transmitting the voltage signal processed by the signal processor 2 to the alarm terminal 3 and the hydraulic solenoid valve 4.

[0061] Specifically, this control circuit is used to transmit the voltage signal processed by the signal processor 2 to the alarm terminal 3 and the hydraulic solenoid valve 4. The control circuit employs reliable transmission technology and anti-interference measures to ensure accurate signal transmission.

[0062] In this embodiment, the control circuit ensures accurate transmission of the voltage signal, avoiding false alarms and missed alarms caused by signal interference or transmission errors. This reliable signal transmission mechanism improves the safety and reliability of the entire device.

[0063] In one possible embodiment, the voltage detection probe 1, signal processor 2, alarm terminal 3, and hydraulic solenoid valve 4 are all modularly designed.

[0064] In this embodiment, the modular design improves the flexibility and scalability of the entire device. When a module fails, the faulty module can be quickly replaced without replacing the entire device. This design reduces maintenance costs and improves work efficiency.

[0065] In one possible embodiment, a data storage module is also included, which is connected to the signal processor 2 and is used to record voltage data and alarm information for each detection.

[0066] Specifically, the data storage module employs reliable storage technology and data encryption measures to ensure data security and integrity.

[0067] In this embodiment, the data storage module provides operators with detailed detection data and alarm records, which helps in analyzing safety issues during operations and taking corresponding improvement measures. Simultaneously, data encryption measures ensure data security and prevent data leakage and misuse.

[0068] In summary, the voltage level of the overhead contact line is monitored in real time by voltage detection probe 1. When the detected voltage value exceeds a preset safety threshold (e.g., 36V), voltage detection probe 1 will send a signal to signal processor 2. Upon receiving this signal, signal processor 2 will perform necessary processing and trigger alarm terminal 3. Alarm terminal 3 will then issue an alarm to remind operators of the high-voltage hazard.

[0069] Simultaneously, signal processor 2 also sends a control signal to hydraulic solenoid valve 4. Upon receiving this signal, hydraulic solenoid valve 4 cuts off the hydraulic power source of the platform drive motor, thereby preventing the work platform from lifting or lowering while energized.

[0070] By monitoring voltage in real time and taking corresponding control measures, the system effectively avoids the risks of live-line work and provides reliable safety protection for workers.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions for some or all of the technical features, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A safety protection alarm device for high-voltage detection in overhead contact line maintenance vehicles, characterized in that, It includes a voltage detection probe (1), a signal processor (2), an alarm terminal (3), and a hydraulic solenoid valve (4); The voltage detection probe (1) is used to detect the voltage of the overhead contact line above the vehicle in real time; The input terminal of the signal processor (2) is connected to the voltage detection probe (1), and the output terminal is connected to the hydraulic solenoid valve (4), which is used to control the opening or closing of the hydraulic solenoid valve (4) according to the detected voltage. The alarm terminal (3) is electrically connected to the signal processor (2) and is used to display voltage information and issue an alarm signal when the voltage is higher than the safe voltage for the human body. The hydraulic solenoid valve (4) is used to cut off the hydraulic power source of the work platform when an alarm signal is received, so as to prevent the work platform from lifting or lowering.

2. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 1, characterized in that, The safe voltage for the human body is set to 36V; When the detected contact network voltage is higher than 36V, the alarm terminal (3) issues an alarm signal for high voltage danger, the hydraulic solenoid valve (4) loses power, and the working platform loses power. When the detected contact network voltage is lower than 36V, the hydraulic solenoid valve (4) is energized, and the working platform is powered.

3. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 1, characterized in that, The voltage detection probe (1) adopts a non-contact detection method.

4. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 1, characterized in that, It also includes a power supply module (5), which provides a stable operating voltage for the voltage detection probe (1), signal processor (2), alarm terminal (3) and hydraulic solenoid valve (4).

5. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 4, characterized in that, The power module (5) uses a DC24V power supply.

6. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 1, characterized in that, The alarm terminal (3) includes a display screen and indicator lights; The display screen is used to display voltage information in real time; The indicator light is used to issue a visual alarm signal when the voltage is higher than the safety threshold.

7. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 6, characterized in that, The indicator light includes a red light and a green light; The red light flashes when the voltage is higher than the safety threshold. The green light illuminates when the voltage is below a safe threshold.

8. The safety protection alarm device for high-voltage detection in overhead contact line maintenance vehicles according to claim 1, characterized in that, It also includes a control circuit for transmitting the voltage signal processed by the signal processor (2) to the alarm terminal (3) and the hydraulic solenoid valve (4).

9. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 1, characterized in that, The voltage detection probe (1), signal processor (2), alarm terminal (3), and hydraulic solenoid valve (4) all adopt a modular design.

10. The safety protection alarm device for high-voltage detection of overhead contact line maintenance vehicles according to claim 1, characterized in that, It also includes a data storage module, which is connected to the signal processor (2) and is used to record voltage data and alarm information for each detection.

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