Visual grounding device for overhead line system

Abstract

A contact network visual grounding device comprises a support and a grounding switch, the grounding switch is installed on the left side of the top end of the support, a camera facing the grounding switch is installed on the right side of the top end of the support, an electric control box is installed at the bottom of the support, and the electric control box is connected with the grounding switch through a transmission assembly. Driving the grounding switch to open and close; a touch screen is arranged on the front face of the electric control box, and opening and closing state video signals of the grounding switch are shot in real time through the camera and transmitted to the touch screen to be displayed in real time. The utility model aims to overcome the defects in the prior art.

Description

A visual grounding device for overhead contact lines Technical Field

[0001] This utility model belongs to the technical field of grounding devices for electrified railway contact networks, and particularly relates to a visual grounding device for contact networks. Background Technology

[0002] The reliable operation of electrified railway traction power supply systems relies on high-quality maintenance work, with safety and efficiency being key indicators for evaluating its quality. With the rapid development of electrified railways, the number of transport lines is increasing, the network is becoming more complex, and cross-regional and cross-professional operations are becoming more frequent, leading to increasingly limited maintenance windows for the overhead contact system. Traditional manual methods of installing and removing grounding wires consume significant maintenance window time and pose hidden dangers and safety risks. Therefore, grounding switches were developed. However, existing grounding switches cannot display the grounding status via video or monitor the overhead contact system voltage in real time and transmit this information remotely to the back-end monitoring center. This prevents dispatchers from understanding the grounding settings through the power monitoring system, increasing the risk of energizing with grounded wires. Such accidents can result in unpredictable losses such as equipment damage and personal injury. Summary of the Invention

[0003] This invention provides a visual grounding device for overhead contact lines to overcome the shortcomings of existing technologies.

[0004] The technical solution adopted by this utility model is: a contact network visual grounding device, including a bracket and a grounding switch. The grounding switch is installed on the top left side of the bracket, and a camera facing the grounding switch is installed on the top right side of the bracket. An electric control box is installed at the bottom of the bracket. The electric control box is connected to the grounding switch through a transmission component to drive the grounding switch to open and close. The front of the electric control box is provided with a touch screen. The camera captures video signals of the opening and closing status of the grounding switch in real time and transmits them to the touch screen for real-time display.

[0005] The electric control box contains an electric operating mechanism, an intelligent control device, and a control panel. The output shaft of the electric operating mechanism extends out of the box and is connected to the lower end of the transmission assembly. The intelligent control device includes an intelligent controller and a network switch. The intelligent controller is electrically connected to the electric operating mechanism via a contactor and is communicatively connected to the network switch. The control panel includes a touch screen, a power switch, and a circuit breaker button. The touch screen is communicatively connected to the network switch, and the power switch and circuit breaker button are electrically connected to the intelligent controller. Control parameters are set via the touch screen and transmitted to the intelligent controller. Circuit breaker signals are input to the intelligent controller via the circuit breaker button. The intelligent controller controls the output shaft of the electric operating mechanism to rotate forward and reverse to output circuit breaker actions. The intelligent controller is electrically connected to a camera, and the camera is communicatively connected to the network switch. The camera transmits video signals to the touch screen via the network switch.

[0006] Two inductive voltage sensors are also installed at the top of the bracket. These two sensors monitor the voltage status of the contact network in real time and transmit the two voltage signals to the intelligent controller for comparison. When both inductive voltage sensors output no voltage signal, the touch screen displays "No Power"; when both sensors output voltage signal, the touch screen displays "Power"; when one sensor outputs voltage signal and the other outputs no voltage signal, the touch screen displays "Warning".

[0007] An LED display screen is installed on the bracket below the grounding switch, and the LED display screen is communicatively connected to the intelligent controller to synchronously display the "powered", "no power" and "warning" grid voltage status information.

[0008] The inductive voltage sensors are respectively arranged on both sides of the camera and located below the camera.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1. This utility model transmits real-time images of the grounding switch opening and closing to a touch screen via a camera, making it convenient for staff to observe the opening and closing status of the grounding switch and ensuring the safety and reliability of overhead contact line maintenance operations.

[0011] 2. This utility model simplifies the manual voltage testing process by setting up a voltage sensor to monitor the voltage status of the contact network in real time. Furthermore, the voltage sensor adopts a redundant method to monitor the voltage status of the contact network, which improves the reliability of the monitoring.

[0012] 3. This utility model uses an LED display screen to show the real-time voltage status of the contact network, which makes it easy for all personnel performing on-site maintenance to see clearly and prevent safety accidents. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the structure of this utility model;

[0014] Figure 2 is a block diagram of the electrical and control system of the intelligent control box of this utility model;

[0015] Figure 3 is a schematic diagram of the utility model in use. Detailed Implementation

[0016] The present invention will now be described in detail with reference to Figures 1-3 and specific embodiments.

[0017] A contact network visual grounding device includes a bracket 1 and a grounding switch 2. The grounding switch 2 is installed on the top left side of the bracket 1, and a camera 3 facing the grounding switch 2 is installed on the top right side of the bracket 1. An electric control box 4 is installed at the bottom of the bracket 1. The electric control box 4 is connected to the grounding switch 2 through a transmission component 5 and drives the grounding switch 2 to open and close. The front of the electric control box 4 is provided with a touch screen 4-1. The camera 3 captures video signals of the opening and closing status of the grounding switch 2 in real time and transmits them to the touch screen 4-1 for real-time display.

[0018] The electric control box 4 contains an electric operating mechanism, an intelligent control device, and a control panel. The output shaft of the electric operating mechanism extends out of the box and is connected to the lower end of the transmission assembly 5. The intelligent control device includes an intelligent controller and a network switch. The intelligent controller is electrically connected to the electric operating mechanism via a contactor and is communicatively connected to the network switch. The control panel includes a touch screen 4-1, a power switch, and a circuit breaker button. The touch screen 4-1 is communicatively connected to the network switch, and the power switch and circuit breaker button are electrically connected to the intelligent controller. Control parameters are set via the touch screen 4-1 and transmitted to the intelligent controller. Circuit breaker signals are input to the intelligent controller via the circuit breaker button. The intelligent controller controls the output shaft of the electric operating mechanism to rotate forward and reverse to output circuit breaker actions. The intelligent controller is electrically connected to a camera 3, and the camera 3 is communicatively connected to the network switch. The camera 3 transmits video signals to the touch screen 4-1 via the network switch.

[0019] The electric operating mechanism is the same as the existing technology, consisting of a worm gear reducer and a DC motor; the intelligent controller adopts a Siemens PLC industrial controller, and the intelligent control device also includes a switching power supply, which is electrically connected to a power switch, and supplies power to the network switch and touch screen 4-1 through the switching power supply; the power switch is connected to an external power source.

[0020] The intelligent controller can also remotely transmit operation control information (video image information, anti-misoperation interlocking information, fault alarm information, and other data information) to the backend via a network switch.

[0021] To ensure the safety of overhead contact line maintenance operations, two inductive voltage sensors 6 are installed at the top of the support 1. These two sensors monitor the voltage status of the overhead contact line in real time and transmit the two voltage signals to the intelligent controller for comparison. When both sensors 6 output no voltage signal, the touchscreen 4-1 displays "No Power"; when both sensors 6 output voltage signals, the touchscreen 4-1 displays "Power"; when one sensor 6 outputs voltage signal and the other outputs no voltage signal, the touchscreen 4-1 displays "Warning".

[0022] The two inductive voltage sensors 6 are symmetrically arranged on both sides of the camera 3 and located below the camera 3, employing a redundant approach to monitor the mains voltage status in real time. Because the touchscreen 4-1 is small and housed inside the enclosure, the video feed and various data information on the touchscreen are easily accessible for management and operation personnel to view and use at close range. To ensure that all personnel performing on-site maintenance can clearly observe the mains voltage status and prevent safety accidents, an LED display screen 7 is installed on the bracket 1 below the grounding switch 2. The LED display screen 7 is communicatively connected to the intelligent controller, synchronously displaying "Power On," "Power Off," and "Warning" mains voltage status information.

[0023] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of implementation of the present utility model. Therefore, all equivalent variations made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.

Claims

1. A visual grounding device for overhead contact lines, comprising a support (1) and a grounding switch (2), characterized in that: The grounding switch (2) is installed on the top left of the bracket (1). A camera (3) facing the grounding switch (2) is installed on the top right of the bracket (1). An electric control box (4) is installed at the bottom of the bracket (1). The electric control box (4) is connected to the grounding switch (2) through a transmission component (5) to drive the grounding switch (2) to open and close. A touch screen (4-1) is provided on the front of the electric control box (4). The camera (3) captures the opening and closing status video signal of the grounding switch (2) in real time and transmits it to the touch screen (4-1) for real-time display.

2. The contact network visual grounding device according to claim 1, characterized in that: The electric control box (4) is equipped with an electric operating mechanism, an intelligent control device and a control panel. The output shaft of the electric operating mechanism extends out of the box and is connected to the lower end of the transmission assembly (5). The intelligent control device includes an intelligent controller and a network switch. The intelligent controller is electrically connected to the electric operating mechanism through a contactor and is communicatively connected to the network switch. The control panel includes a touch screen (4-1), a power switch and a circuit breaker button. The touch screen (4-1) is communicatively connected to the network switch. The power switch and the circuit breaker button are electrically connected to the intelligent controller. The control parameters are set through the touch screen (4-1) and transmitted to the intelligent controller. The circuit breaker button is used to input circuit breaker signals to the intelligent controller. The intelligent controller controls the output shaft of the electric operating mechanism to rotate forward and reverse to output circuit breaker actions. The intelligent controller is electrically connected to the camera (3). The camera (3) is communicatively connected to the network switch, and the camera (3) transmits video signals to the touch screen (4-1) through the network switch.

3. The contact network visual grounding device according to claim 2, characterized in that: Two inductive voltage sensors (6) are also installed at the top of the bracket (1). The two inductive voltage sensors (6) monitor the voltage status of the contact network in real time and transmit the two monitored voltage signals to the intelligent controller for judgment and comparison. When both inductive voltage sensors (6) output no voltage signal, the touch screen (4-1) displays "no power"; when both inductive voltage sensors (6) output voltage signal, the touch screen (4-1) displays "power"; when one inductive voltage sensor (6) outputs voltage signal and the other inductive voltage sensor (6) outputs no voltage signal, the touch screen (4-1) displays "warning".

4. The contact network visual grounding device according to claim 3, characterized in that: An LED display screen (7) is installed on the bracket (1) below the grounding switch (2), and the LED display screen (7) is connected to the intelligent controller to synchronously display the "powered", "no power" and "warning" network voltage status information.

5. The contact network visual grounding device according to claim 3 or 4, characterized in that: The inductive voltage sensors (6) are arranged on both sides of the camera (3) and located below the camera (3).

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