Ground screen connecting and disconnecting device

Abstract

The utility model discloses an earth screen connecting and disconnecting device, which comprises a box body, a first connecting steel plate, a second connecting steel plate, a bridging plate, a first fixing bolt, a second fixing bolt, a first fastening bolt, a second fastening bolt, a limiting block, a position sensor, a power supply device, a bridging plate state alarm, a lightning current acquisition coil and an interactive interface box, all the components are arranged in the box body, the front end of the first connecting steel plate and the front end of the second connecting steel plate are oppositely arranged in the box body, the front end of the bridging plate is a C-shaped hole, the rear end of the bridging plate is a round hole, and one end of the round hole is connected with the front end of the second connecting steel plate through a second fastening bolt; one end of the C-shaped hole can be connected to the first fastening bolt at the front end of the first connecting steel plate in a buckled mode or disconnected from the first fastening bolt, and the bridging plate is connected with the first connecting steel plate and the second connecting steel plate to form a ground screen connecting channel. The device well solves the problem that two connected earth screens need to be tested separately in operation.

Description

Technical Field

[0001] The utility model relates to the technical field of railway equipment, in particular to a ground grid connection and disconnection device. Background Art

[0002] According to railway integrated grounding requirements, when a communications tower is within 15 meters of the equipment room grounding grid, the tower grounding grid and the equipment room grounding grid should be connected at least twice using 40×4mm hot-dip galvanized flat steel. The current railway standard, "Railway Communications Design Specifications" (TB10006-2016), stipulates that the grounding resistance of the grounding body of the building housing communications equipment should not exceed 1Ω. The current railway standard, "Railway Digital Mobile Communication System (GSM-R) Design Specifications" (TB10088-2015), stipulates that the grounding resistance of the grounding body installed independently on towers and poles should not exceed 10Ω. The grounding resistance values ​​of the two grounding grids are different. When the two grounding grids are connected with flat steel, maintenance personnel can only test the shared grounding grid during operation and cannot monitor changes in the grounding resistance of one of the grounding grids. This is especially true for tower grounding grids, which are prone to lightning strikes. If the tower grounding grid undergoes significant changes due to some circumstances, maintenance personnel will not be able to determine the grounding resistance value of the grid through testing. In this case, if the tower is connected to the lightning, the lightning current will mainly dissipate through the ground grid of the machine room, which is more likely to cause strike-back hazards.

[0003] In view of this, the present utility model is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a ground grid connection disconnection device, which can easily disconnect the ground grid connection, allowing maintenance personnel to find the grounding resistance value of the ground grid through testing, solving the problem of disconnecting the ground grid connection during on-site grounding resistance testing, and thus solving the above-mentioned technical problems existing in the prior art.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A ground grid connection and disconnection device, comprising:

[0007] Box, first connecting steel plate, second connecting steel plate, jumper plate, first fixing bolt, second fixing bolt, first fastening bolt, second fastening bolt, limit block, position sensor, power supply device, jumper plate status alarm, lightning current collection coil and interactive interface box; wherein,

[0008] The first connecting steel plate is inserted into the box from one side, the rear end of the first connecting steel plate is connected to the box via a first fixing bolt, and the front end is fixed to the box via a first fastening bolt;

[0009] The second connecting steel plate is inserted into the box body from the opposite side of the first connecting steel plate, and the rear end of the second connecting steel plate is connected to the box body via a second fixing bolt;

[0010] The front end of the jumper plate is a C-shaped hole, and the rear end is a circular hole. One end of the circular hole is connected to the front end of the second connecting steel plate through a second fastening bolt. One end of the C-shaped hole can be fastened with a first fastening bolt connected to the front end of the first connecting steel plate or separated from the first fastening bolt to disconnect. After the jumper plate connects the first connecting steel plate and the second connecting steel plate, a ground grid connection path is formed;

[0011] A limit block is provided below the front end of the jumper plate to limit the position of the front end of the jumper plate after separation;

[0012] A position sensor is provided above the jumper plate, and the position where the jumper plate is connected to the first connecting steel plate can trigger a trigger end of the position sensor;

[0013] The jumper board status alarm is electrically connected to the position sensor via a power supply device and can indicate the current status of the jumper board according to the electrical signal of the position sensor;

[0014] The interactive interface box is disposed in the box body, and the first connecting steel plate is electrically connected to the interactive interface box via a connecting wire;

[0015] The second connecting steel plate is electrically connected to the interactive interface box via a connecting wire;

[0016] The lightning current collection coil is arranged on the first connecting steel plate and is electrically connected to the interactive interface box via a coaxial cable.

[0017] Compared with the prior art, the ground grid connection and disconnection device provided by the present invention has the following beneficial effects:

[0018] By installing a jumper plate that can be connected or disconnected between the first and second connecting steel plates of the box, the ground grid connection can be easily disconnected. By installing a position sensor and a jumper plate status alarm, an alarm prompt will be issued when the connection is disconnected, indicating the status of the jumper plate. The alarm information can only be eliminated when the jumper plate is connected in place, ensuring the reliability of the ground grid connection. By installing a lightning current collection coil and an interactive interface box in the ground grid, an external lightning information recording device can be connected to the ground grid to collect lightning information on the ground grid connection conductor in real time, providing data support for operation and maintenance. This device effectively solves the problem of needing to test two connected ground grids separately during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural schematic diagram of the jumper plate connection status of the ground grid connection and disconnection device provided in an embodiment of the utility model.

[0021] Figure 2 A side view schematic diagram of a jumper plate of a ground grid connection and disconnection device provided in an embodiment of the present utility model.

[0022] Figure 3 This is a structural schematic diagram of the jumper plate disconnect state of the ground grid connection disconnect device provided by an embodiment of the utility model.

[0023] The marks in the figure are: 1-box; 2-first connecting steel plate; 2a-second connecting steel plate; 3-jumper board; 4-handle with insulating sheath; 5-first fastening bolt; 5a-second fastening bolt; 6-interactive interface box; 7-lightning current acquisition coil; 8-lightning current acquisition interface; 9-first grounding resistance test interface; 9a-second grounding resistance test interface; 10-jumper board status alarm; 11-battery box; 12-battery; 13-position sensor; 14-current limiting resistor; 15-limiting block; 16-coaxial cable; 17-connecting line; 18-first fixing bolt; 18a-second fixing bolt. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them, and do not constitute a limitation of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] First, the following terms may be used in this article:

[0026] The term “and / or” means that either or both of them can be realized at the same time. For example, X and / or Y includes both “X” or “Y” and “X and Y”.

[0027] The terms "include," "comprises," "contains," "has," or other similar expressions should be interpreted as non-exclusive. For example, "including certain technical features (such as raw materials, components, ingredients, carriers, dosage forms, materials, dimensions, parts, components, mechanisms, devices, steps, procedures, methods, reaction conditions, processing conditions, parameters, algorithms, signals, data, products, or manufactured articles, etc.) should be interpreted as including not only the technical features explicitly listed, but also other technical features known in the art that are not explicitly listed.

[0028] The term "consisting of" excludes any technical features not explicitly listed. If used in a claim, this term renders the claim closed, excluding any technical features other than those explicitly listed, except for conventional impurities associated with them. If this term appears only in a clause of a claim, it limits only the elements explicitly listed in that clause; elements listed in other clauses are not excluded from the claim as a whole.

[0029] Unless otherwise specified or limited, the terms "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this document based on specific circumstances.

[0030] The terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings and are only for the convenience and simplification of description, and do not explicitly or implicitly indicate that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation to this document.

[0031] The solutions provided by the present invention are described in detail below. Any content not described in detail in the examples of the present invention belongs to the prior art known to those skilled in the art. Where specific conditions are not specified in the examples of the present invention, the experiments were carried out according to conventional conditions in the art or the conditions recommended by the manufacturer. Where the manufacturers of reagents or instruments used in the examples of the present invention are not specified, they are all conventional products that can be purchased commercially.

[0032] like Figures 1 to 3 As shown, the embodiment of the present invention provides a ground grid connection and disconnection device, comprising:

[0033] Box, first connecting steel plate, second connecting steel plate, jumper plate, first fixing bolt, second fixing bolt, first fastening bolt, second fastening bolt, limit block, position sensor, power supply device, jumper plate status alarm, lightning current collection coil and interactive interface box; wherein,

[0034] The first connecting steel plate is inserted into the box from one side, the rear end of the first connecting steel plate is connected to the box via a first fixing bolt, and the front end is fixed to the box via a first fastening bolt;

[0035] The second connecting steel plate is inserted into the box body from the opposite side of the first connecting steel plate, and the rear end of the second connecting steel plate is connected to the box body via a second fixing bolt;

[0036] The front end of the jumper plate is a C-shaped hole, and the rear end is a circular hole. One end of the circular hole is connected to the front end of the second connecting steel plate through a second fastening bolt. One end of the C-shaped hole can be fastened with a first fastening bolt connected to the front end of the first connecting steel plate or separated from the first fastening bolt to disconnect. After the jumper plate connects the first connecting steel plate and the second connecting steel plate, a ground grid connection path is formed;

[0037] A limit block is provided below the front end of the jumper plate to limit the position of the front end of the jumper plate after separation;

[0038] A position sensor is provided above the jumper plate, and the position where the jumper plate is connected to the first connecting steel plate can trigger a trigger end of the position sensor;

[0039] The jumper board status alarm is electrically connected to the position sensor via a power supply device and can indicate the current status of the jumper board according to the electrical signal of the position sensor;

[0040] The interactive interface box is disposed in the box body, and the first connecting steel plate is electrically connected to the interactive interface box via a connecting wire;

[0041] The second connecting steel plate is electrically connected to the interactive interface box via a connecting wire;

[0042] The lightning current collection coil is arranged on the first connecting steel plate and is electrically connected to the interactive interface box via a coaxial cable.

[0043] Preferably, in the above device, the power supply device is composed of a battery arranged in a battery box and connected in series with a current-limiting resistor.

[0044] Preferably, in the above device, the interactive interface box includes: a lightning current acquisition interface, a first grounding resistance test interface and a second grounding resistance test interface; wherein,

[0045] The lightning current collection interface is electrically connected to the lightning current collection coil via the coaxial cable;

[0046] The first ground resistance test interface is electrically connected to the first connecting steel plate through the connecting wire;

[0047] The second ground resistance test interface is electrically connected to the second connecting steel plate through the connecting wire.

[0048] Preferably, in the above device, the jumper board status alarm is provided on the interactive interface box.

[0049] Preferably, in the above device, the box body is made of SMC material.

[0050] Preferably, in the above device, the position sensor is a travel switch.

[0051] Preferably, in the above device, a handle with an insulating sheath is provided on the jumper plate.

[0052] Preferably, in the above device, the jumper board status alarm is an indicator light with a buzzer. When the jumper board is disconnected, the position sensor closes the circuit between the indicator light and the battery, causing the indicator light to illuminate and the buzzer to sound an alarm. Alternatively, the status alarm can be implemented by using a circuit board with the indicator light and buzzer separated and a single-chip microcomputer added to the circuit board for control.

[0053] From the above, it can be seen that the earth grid connection and disconnection device of the embodiment of the present invention is provided with a jumper plate that can rotatably connect the first connecting steel plate and the second connecting steel plate, which is fixed and can facilitate the connection and disconnection of the earth grid, and thus facilitate and accurately test the grounding resistance. The rotation connection and disconnection method is convenient for maintenance personnel to operate; at the same time, through the cooperation of the set position sensor and the jumper plate status alarm, the connection and disconnection status of the jumper plate can be well indicated, thereby improving safety; at the same time, a lightning current acquisition coil as a lightning information sensor is built in, and together with the interactive interface box, it is convenient to test lightning information and provide data support for operation and maintenance.

[0054] It can be known that the jumper plate connection method can also be connected by double bolt fastening or by utilizing metal deformation force to tighten the connection.

[0055] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the solution provided by the embodiments of the present invention will be described in detail with reference to specific embodiments below.

[0056] Example 1

[0057] like Figures 1 to 3As shown, this embodiment provides a ground grid connection and disconnection device that can conveniently disconnect the ground grid. In this device, the housing 1 is made of SMC, a material commonly used in outdoor railway signaling equipment, to meet the requirements of outdoor applications. The first and second connecting steel plates 2a in the housing 1 are fixed to the housing via first and second fixing bolts 18 and 18a, respectively, and are welded to the ground grid to be connected via hot-dip galvanized flat steel. The first and second connecting steel plates 2, 2a are sealed at the exit of the housing 1 and can also be formed in one piece using integral hardware injection molding or die-casting to prevent moisture or water ingress during use.

[0058] The jumper plate has a round hole at one end and a C-shaped hole at the other, facilitating on-site disconnection. Rotate the jumper plate 3 clockwise until it engages with the first fastening bolt 5 on the first connecting steel plate 2. The jumper plate status alarm 10 should now be silent. Tighten the first and second fastening bolts 5a to complete the connection between the two grounding grids. Replace the cover of the box 1. For on-site disconnection, simply loosen the first and second fastening bolts 5, 5a, between the first and second connecting steel plates 2, 2a, and the jumper plate 3. Rotate the jumper plate 3 to disconnect.

[0059] In the above-mentioned ground grid connection and disconnection device, the box body is made of SMC material commonly used in railway signal outdoor equipment to meet the needs of outdoor applications.

[0060] In the above-mentioned ground grid connection and disconnection device, an interactive interface box 6 is provided in the box body 1, and a lightning current collection interface, a ground resistance test interface, and a jumper board status alarm are provided in the interactive interface box 6.

[0061] In the above-mentioned ground grid connection and disconnection device, a position sensor 13 is set in the box body 1 at the upper end of the connection position of the jumper plate 3. The position sensor 13 can adopt a travel switch or a similar structure, and can cooperate with the jumper plate status alarm to assist in confirming whether the jumper plate 3 is installed in place.

[0062] A lightning current collection coil and a lightning current collection sensor are provided on the first connecting steel plate. Together with the interactive interface box 6 in the box body 1, an external lightning information recording device can be connected to record the lightning current information of the two grounding grids in real time, such as the time, number, amplitude, polarity, etc.

[0063] When you need to disconnect the ground grid to perform a ground resistance test, follow the steps below:

[0064] 1) Open the cover of the box 1;

[0065] 2) Use a sleeve to loosen the first fastening bolt 5 and the second fastening bolt 5a;

[0066] 3) Hold the insulated handle 4 on the jumper plate 3 with hand, rotate counterclockwise until the limit block 15.

[0067] 4) Connect the PE pole of the grounding resistance tester to the first grounding resistance test interface 9 and the first grounding resistance test interface 9a at the alternate interface box 6 respectively, then the grounding resistance values of the two ground networks can be tested respectively.

[0068] 5) At this time, the jumper plate 3 is in the disconnected position, the position sensor 13 is in the closed state, the battery 12 in the battery box 11 supplies power to the jumper plate state alarm 10 through the current limiting resistor 14, and the operator will receive an audible and visual alarm prompt.

[0069] 6) After the test operation is completed, hold the insulated handle 4 on the jumper plate 3 with hand, rotate counterclockwise until the C-shaped hole at the front end of the jumper plate 3 is clamped with the first fastening bolt 5 on the first connecting steel plate 2. Tighten the first fastening bolt 5 and the second fastening bolt 5a.

[0070] 7) After the jumper plate 3 is installed and fastened, the position sensor 13 changes from the closed state to the disconnected state, and the alarm of the jumper plate state alarm 10 is eliminated.

[0071] Pull out the grounding resistance tester test line, cover the box cover of the box body 1, and the test is completed.

[0072] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims. The information disclosed in the background section of this paper is only intended to deepen the understanding of the overall background technology of the present application, and should not be regarded as acknowledging or implying in any form that the information constitutes the prior art known to those skilled in the art.

Claims

1. A ground grid connection and disconnection device, characterized in that: include: Box, first connecting steel plate, second connecting steel plate, jumper plate, first fixing bolt, second fixing bolt, first fastening bolt, second fastening bolt, limit block, position sensor, power supply device, jumper plate status alarm, lightning current collection coil and interactive interface box; wherein, The first connecting steel plate is inserted into the box from one side, the rear end of the first connecting steel plate is connected to the box via a first fixing bolt, and the front end is fixed to the box via a first fastening bolt; The second connecting steel plate is inserted into the box body from the opposite side of the first connecting steel plate, and the rear end of the second connecting steel plate is connected to the box body via a second fixing bolt; The front end of the jumper plate is a C-shaped hole, and the rear end is a circular hole. One end of the circular hole is connected to the front end of the second connecting steel plate through a second fastening bolt. One end of the C-shaped hole can be fastened with a first fastening bolt connected to the front end of the first connecting steel plate or separated from the first fastening bolt to disconnect. After the jumper plate connects the first connecting steel plate and the second connecting steel plate, a ground grid connection path is formed; A limit block is provided below the front end of the jumper plate to limit the position of the front end of the jumper plate after separation; A position sensor is provided above the jumper plate, and the position where the jumper plate is connected to the first connecting steel plate can trigger a trigger end of the position sensor; The jumper board status alarm is electrically connected to the position sensor via a power supply device and can indicate the current status of the jumper board according to the electrical signal of the position sensor; The interactive interface box is disposed in the box body, and the first connecting steel plate is electrically connected to the interactive interface box via a connecting wire; The second connecting steel plate is electrically connected to the interactive interface box via a connecting wire; The lightning current collection coil is arranged on the first connecting steel plate and is electrically connected to the interactive interface box via a coaxial cable.

2. The ground grid connection and disconnection device according to claim 1, characterized in that: The power supply device is composed of a battery arranged in a battery box and connected in series with a current-limiting resistor.

3. The ground grid connection and disconnection device according to claim 1, characterized in that: The interactive interface box includes: Lightning current acquisition interface, first ground resistance test interface and second ground resistance test interface; wherein, The lightning current collection interface is electrically connected to the lightning current collection coil via the coaxial cable; The first ground resistance test interface is electrically connected to the first connecting steel plate through the connecting wire; The second ground resistance test interface is electrically connected to the second connecting steel plate through the connecting wire.

4. The ground grid connection and disconnection device according to any one of claims 1 to 3, characterized in that: The jumper board status alarm is arranged on the interactive interface box.

5. The ground grid connection and disconnection device according to any one of claims 1 to 3, characterized in that: The jumper board status alarm uses an indicator light with a buzzer.

6. The ground grid connection and disconnection device according to any one of claims 1 to 3, characterized in that: The box body is made of SMC material.

7. The ground grid connection and disconnection device according to any one of claims 1 to 3, characterized in that: The position sensor adopts a travel switch.

8. The ground grid connection and disconnection device according to any one of claims 1 to 3, characterized in that: A handle with an insulating sheath is provided on the jumper plate.

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