Railway overhead line system magnetic ground wire device

Abstract

The utility model relates to railway contact net maintenance equipment technical field, concretely relates to a railway contact net magnetic attraction type ground wire device, aims at solving the problem that the existing grounding device is complicated to operate, is inefficient and needs to carry many insulating poles. The utility model includes: insulating pole is used for supporting electromagnet and is sent to the working position, ground hook is hung in contact net conductor and is connected ground wire, electromagnet and with the control device of electromagnet electricity connection, wherein, control device is used for controlling the on-off electricity of electromagnet, to make electromagnet magnetism attract ground hook when electrification, thereby establishes the separable connection between insulating pole and ground hook. The utility model allows using single insulating pole to complete the installation and removal of multiple groups of ground wire in turn, significantly improves the operation efficiency, reduces the labor intensity, and the simple structure is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of railway catenary maintenance equipment, and specifically to a magnetic grounding device for railway catenary. Background Technology

[0002] During power outage maintenance or emergency repairs of railway overhead contact lines, installing temporary grounding wires is a crucial step in ensuring the safety of personnel. Currently, the commonly used grounding devices consist of an insulated operating rod and a grounding hook, which are typically connected mechanically using threads or clips.

[0003] This method has significant drawbacks: First, each set of grounding wires requires a complete set of insulating rods, forcing workers to carry multiple heavy rods, significantly increasing labor intensity and causing inconvenience in confined work spaces. Second, mechanical connections are time-consuming to assemble and disassemble, affecting the efficiency of maintenance, especially emergency repairs. Finally, repeated mechanical connections and disassemblies pose risks of wear and tear and unstable connections, potentially threatening work safety. Therefore, providing a device that simplifies operation, reduces personnel burden, and enables the rapid and reliable installation and removal of multiple grounding wires is a pressing technical problem that needs to be solved in this field. Utility Model Content

[0004] To address the aforementioned problems in existing technologies, namely the cumbersome operation, low efficiency, and requirement to carry multiple insulating rods in existing grounding devices, this utility model provides a magnetic grounding wire device for railway contact networks, comprising:

[0005] An insulating rod is used to support the electromagnet and move it to the working position.

[0006] A grounding hook, which is attached to the contact wire and connected to the grounding wire;

[0007] The electromagnet; and

[0008] A control device electrically connected to the electromagnet;

[0009] The control device is used to control the electromagnet to switch on and off, so that the electromagnet magnetically attracts the grounding hook when energized, thereby establishing a separable connection between the insulating rod and the grounding hook.

[0010] Furthermore, the control device includes:

[0011] The control circuit is electrically connected to the electromagnet.

[0012] A power supply device provides power to the control circuit and the electromagnet; and

[0013] The remote control device communicates wirelessly with the control circuit and is used to send control commands to the control circuit.

[0014] Furthermore, the power supply device is a rechargeable battery disposed inside the insulating rod.

[0015] Furthermore, the effective control distance of the remote control device is not less than 50 meters.

[0016] Furthermore, the control circuit has an automatic fault lockout function, which maintains power supply to the electromagnet when a preset fault state is detected.

[0017] Furthermore, the rated attraction force of the electromagnet is not less than 40 kg.

[0018] Furthermore, it also includes a connecting sleeve, which is disposed at one end of the insulating rod, and the electromagnet is installed inside the connecting sleeve.

[0019] Furthermore, the connecting sleeve is detachably connected to the insulating rod via a threaded structure.

[0020] Furthermore, the grounding hook includes:

[0021] Arc-shaped hooks used for suspending overhead contact wires;

[0022] A connection part for fixing the grounding wire; and

[0023] A sleeve portion, wherein the connecting sleeve is adapted to be inserted into the sleeve portion to form a nested fit.

[0024] The beneficial effects of this utility model are:

[0025] The core of this invention lies in establishing a detachable connection between the insulating rod and the grounding hook using an electromagnet. This allows operators to install and remove multiple grounding wires sequentially by remotely controlling the power supply, using only a single insulating rod. This fundamentally solves the problem in the prior art where each grounding wire required a separate insulating rod, forcing operators to carry multiple heavy rods, greatly reducing the physical burden on personnel and lowering equipment configuration costs.

[0026] This invention employs an electromagnetic attraction method for connection and separation. Operators only need to issue commands via a remote control to achieve millisecond-level rapid engagement and separation between the insulating rod and the grounding hook. The entire process requires no rotation or precise alignment, making operation extremely simple and rapid. This effectively shortens operation time in routine maintenance and offers an irreplaceable efficiency advantage in time-sensitive scenarios such as emergency repairs. Attached Figure Description

[0027] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0028] Figure 1 This is a schematic diagram of the overall structure of a magnetic grounding device for railway contact wires according to this utility model. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Please see Figure 1 This utility model provides a magnetic grounding device for railway contact wires, which includes:

[0032] Insulating rod 1 is used to support electromagnet 5 and move it to the working position;

[0033] Grounding hook 2, which is attached to the contact wire and connected to the grounding wire;

[0034] The electromagnet 5; and the control device electrically connected to the electromagnet 5;

[0035] The control device is used to control the electromagnet 5 to switch on and off, so that the electromagnet 5 magnetically attracts the grounding hook 2 when energized, thereby establishing a separable connection between the insulating rod 1 and the grounding hook 2.

[0036] Specifically, the insulating rod 1, which serves as the main part held by the operator, provides the necessary safe insulation distance. Its material is preferably epoxy resin fiber reinforced composite material, and its wall thickness and mechanical strength can be set according to the voltage level used. For example, an outer diameter of about 40 mm is preferred to ensure high insulation performance and sufficient operating rigidity.

[0037] The grounding hook 2, as a functional component that directly contacts the contact wire, is made of highly magnetically permeable materials such as iron to ensure reliable magnetic attraction. The electromagnet 5 is the core actuator for connection and disconnection. The control device precisely controls the operating state of the electromagnet 5. This "rod-hook" separation design, which establishes an active separation connection through electromagnetic force, fundamentally solves the problem of cumbersome carrying and tedious operation caused by the requirement of an insulating rod for each set of grounding wires in the prior art. It allows operators to use only a single insulating rod 1 to repeatedly install and remove multiple sets of grounding hooks 2, significantly improving work efficiency and reducing labor intensity.

[0038] The control device includes: a control circuit 6 disposed within the connecting sleeve 3 and electrically connected to the electromagnet 5; a power supply device 7 disposed within the insulating rod 1, supplying power to the control circuit 6 and the electromagnet 5; and a remote control device 8, wirelessly communicating with the control circuit 6, for sending control commands to the control circuit 6. In this integrated control system, the remote control device 8 serves as an input terminal for human-machine interaction, allowing operators to send control commands such as "engage" or "disengage".

[0039] Control circuit 6, as the system's control center, is responsible for receiving and analyzing the wireless signals emitted by remote control device 8, and accordingly controlling the power supply from power supply device 7 to switch the electromagnet 5 on and off. This control system architecture enables precise, reliable, and remote wireless control of the device's actions, allowing operators to work from a safe distance, thereby greatly improving operational safety.

[0040] The power supply device 7 is a rechargeable battery housed inside the insulating rod 1. Specifically, the power supply device 7 is preferably an embedded rechargeable lithium battery pack with a voltage of 12V and a capacity of 3000mAh, and is over-discharge protected by the control circuit 6. Arranging the battery pack inside the hollow rod of the insulating rod 1 provides effective physical protection for the battery using the robust outer shell of the insulating rod 1. Furthermore, this embedded design makes the overall structure of the device compact and the appearance neat, avoiding the inconvenience caused by external battery boxes and tangled cables, thereby improving the convenience of on-site operation and the overall reliability of the system.

[0041] The effective control distance of the remote control device 8 is no less than 50 meters. In generally open working environments such as along railway lines, setting a remote control distance of no less than 50 meters provides operators with ample safety buffer space, enabling them to perform full-process visual control of the installation and removal of grounding wires from a safe area away from energized equipment. This design not only meets the requirements of relevant safety regulations but also greatly reduces the electrical safety risks faced by operators due to sudden environmental changes or unexpected situations. Those skilled in the art can adjust it within an equivalent range according to different working environments and safety standards, but should not change the basic technical solution and working principle of this utility model.

[0042] The control circuit 6 has an automatic fault lockout function, maintaining power supply to the electromagnet 5 when a preset fault state is detected. This function is a key safety feature of this invention, and its specific implementation is as follows: the control circuit 6 integrates a microcontroller and corresponding monitoring circuit. The microcontroller continuously monitors the wireless communication link with the remote control device 8 through a periodic status signal monitoring mechanism. For example, the remote control device 8 sends a status signal to the control circuit 6 at fixed time intervals (e.g., every 500 milliseconds). If the control circuit 6 fails to receive a valid status signal within a preset timeout threshold (e.g., 2 seconds), it determines that the communication link is abnormal or the remote control device 8 is faulty.

[0043] Meanwhile, the control circuit 6 also has a built-in watchdog timer to monitor the microcontroller's own operating status. If the program runs abnormally or enters an infinite loop, the watchdog timer will trigger a system reset and put it into a preset safe state. When any of the above preset fault states are triggered, the control circuit 6 will, through its hardware circuit design, such as a relay or MOSFET drive circuit controlled by the microcontroller but with a self-locking function, forcibly keep the output terminal of the power supply device 7 connected to the input terminal of the electromagnet 5. Even if the microcontroller restarts or receives an incorrect "disconnect" command, this hardware-level lockout state will not be easily released unless a specific, multi-confirmed unlock command is received or a manual reset is performed.

[0044] This design ensures that even in extreme cases of control system malfunction, the engaged grounding hook 2 will not detach due to accidental power failure, thus eliminating the risk of injury to personnel and equipment below if the grounding hook 2 falls from the air, providing inherent safety for the operation. The above is merely an example; the automatic interlocking function is existing technology, and those skilled in the art can design their own interlocking functions according to actual needs, which will not be elaborated upon here.

[0045] The rated attraction force of the electromagnet 5 is not less than 40 kg. Considering the weight of the grounding hook 2 and the grounding wire itself, the possible shaking during operation, and external factors such as wind, the attraction force of the electromagnet 5 is set at a relatively high level, providing several times the safety margin for the actual load. Simultaneously, the control circuit 6 can also be configured with overcurrent and overtemperature protection based on the selection of the electromagnet 5. This strong attraction force and comprehensive protection measures together ensure a stable and reliable connection between the insulating rod 1 and the grounding hook 2 under various dynamic operating conditions, effectively preventing connection failure and thus ensuring the smooth and safe operation of attaching and detaching.

[0046] This device also includes a connecting sleeve 3, which is disposed at one end of the insulating rod 1, and the electromagnet 5 is installed inside the connecting sleeve 3. As a key structural and functional integrated component, the connecting sleeve 3 is preferably made of aluminum alloy. Its internal design includes a chamber to accommodate the electromagnet 5 and the control circuit 6, serving to support and seal the core electronic components. It is fixed to the working end of the insulating rod 1, forming the "head module" of the entire device. This design integrates the complex electromagnetic attraction and control system into a compact and robust unit, facilitating modular replacement or upgrades of the device and enhancing its maintenance convenience and parameter matching capability under different operating conditions.

[0047] The connecting sleeve 3 is detachably connected to the insulating rod 1 via a threaded structure. Specifically, mating threads are provided at the top of the insulating rod 1 and the end of the connecting sleeve 3. When it is necessary to charge the power supply device 7 built into the insulating rod 1, or to inspect the electromagnet 5 or control circuit 6 inside the connecting sleeve 3, the operator only needs to rotate the connecting sleeve 3 to unscrew it from the insulating rod 1. After separation, charging and maintenance can be performed. This convenient detachable design greatly simplifies the daily maintenance process of the device and improves the availability and turnover rate of the equipment.

[0048] The grounding hook 2 includes: an arc-shaped hook portion for suspending on the contact wire; a connecting portion for fixing the grounding wire; and a sleeve portion, wherein the connecting sleeve 3 is adapted to be inserted into the sleeve portion to form a nested fit. The structure of the grounding hook 2 is precisely designed: its upper arc-shaped hook portion is used to securely hang on the contact wire; the side connecting portion is used to firmly connect the grounding cable; and the lower sleeve portion is the key to achieving stable docking with the insulating rod 1. The sleeve portion is a hollow structure, and its inner hole is precisely matched with the outer dimensions of the connecting sleeve 3. Before attraction, the connecting sleeve 3 is first inserted into this sleeve portion to form a mechanical nested fit. This nested structure not only plays a guiding and pre-positioning role, but more importantly, it can effectively resist lateral shear force; then the electromagnet 5 is energized, generating a strong axial attraction force. The resistance to lateral force provided by the mechanical nesting and the resistance to axial tension provided by the electromagnetic attraction force combine to form a dual stable support with mechanical pressure and electromagnetic attraction force, ensuring extremely high reliability of the connection.

[0049] The workflow of this utility model is as follows:

[0050] During installation, the operator first places the grounding hook 2 with the grounding wire on the ground or in a suitable location. Then, holding the insulating rod 1, the operator aligns the connecting sleeve 3 at its tip with and inserts it into the sleeve of the grounding hook 2. A "closing" command is sent via the remote control device 8, energizing the electromagnet 5 and firmly attaching the grounding hook 2 to the top of the insulating rod 1. The operator then lifts the entire device and attaches the grounding hook 2 to the contact wire. After secure attachment, a "disconnecting" command is sent again via the remote control device 8, de-energizing the electromagnet 5 and causing the insulating rod 1 to instantly separate from the grounding hook 2. The operator then retrieves the insulating rod 1, completing the installation of one set of grounding wires. The operator can then carry the same insulating rod 1 to the next location and repeat the above steps to quickly complete the installation of multiple sets of grounding wires. The removal process is the reverse.

[0051] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0052] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0053] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A magnetic grounding device for railway overhead contact lines, characterized in that, include: An insulating rod (1) is used to support the electromagnet (5) and move it to the working position; Grounding hook (2), the grounding hook (2) is attached to the contact wire and connected to the grounding wire; The electromagnet (5); and Control device electrically connected to the electromagnet (5); The control device is used to control the electromagnet (5) to turn on and off, so that the electromagnet (5) magnetically attracts the grounding hook (2) when it is energized, thereby establishing a separable connection between the insulating rod (1) and the grounding hook (2).

2. The magnetic grounding device for railway contact wires according to claim 1, characterized in that, The control device includes: The control circuit (6) is electrically connected to the electromagnet (5); Power supply device (7) supplies power to the control circuit (6) and the electromagnet (5); and The remote control device (8) communicates wirelessly with the control circuit (6) and is used to send control commands to the control circuit (6).

3. The magnetic grounding device for railway contact wires according to claim 2, characterized in that, The power supply device (7) is a rechargeable battery installed inside the insulating rod (1).

4. The magnetic grounding device for railway contact wires according to claim 2, characterized in that, The effective control distance of the remote control device (8) is not less than 50 meters.

5. The magnetic grounding device for railway contact wires according to claim 2, characterized in that, The control circuit (6) has an automatic fault lockout function, which maintains power supply to the electromagnet (5) when a preset fault state is detected.

6. The magnetic grounding device for railway contact wires according to claim 1, characterized in that, The rated attraction force of the electromagnet (5) is not less than 40 kg.

7. The magnetic grounding device for railway contact wires according to claim 1, characterized in that, It also includes a connecting sleeve (3), which is disposed at one end of the insulating rod (1), and the electromagnet (5) is installed inside the connecting sleeve (3).

8. The magnetic grounding device for railway contact wires according to claim 7, characterized in that, The connecting sleeve (3) is detachably connected to the insulating rod (1) via a threaded structure.

9. The magnetic grounding device for railway contact wires according to claim 8, characterized in that, The grounding hook (2) includes: Arc-shaped hooks used for suspending overhead contact wires; A connection part for fixing the grounding wire; and A sleeve portion, wherein the connecting sleeve (3) is adapted to be inserted into the sleeve portion to form a nested fit.

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