Grounding device

Abstract

The grounding device comprises a grounding main body, a multi-carbon brush cooperation mechanism, a dynamic power connection mechanism and a heat dissipation mechanism, a rotating shaft is rotatably arranged in the middle in the grounding main body, a carbon brush is fixedly arranged on the rotating shaft in a surrounding manner, a conductive piece is fixedly arranged in the middle of the bottom of the grounding main body, and a limiting piece is inserted in the middle in the carbon brush in a matched manner; an indicating lamp is fixedly arranged in the middle outside the grounding body, an insulating layer wire is connected between the limiting piece and the indicating lamp, a dynamic power connection mechanism is arranged below the grounding body, and a heat dissipation mechanism is arranged on the grounding body. According to the utility model, the spacing sheets and the insulating layer wires are inserted among the plurality of groups of carbon brushes, and the insulating layer wires are rubbed to damage the insulating layer to form a path to trigger the indicating lamp to give an alarm, thereby solving the problem that a traditional device needs to be dismounted for inspection or carbon powder shielding causes a detection blind area; the three groups of carbon brushes rotate along with the rotating shaft to be in contact with the power connection end in turn for electrification, so that stable current transmission is effectively guaranteed, and the device is suitable for rail transit and other scenes with strict requirements on electrical safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment grounding protection technical field especially relates to a grounding device. BACKGROUND

[0002] The grounding device is the core infrastructure of electrical safety, through scientific design, material selection and intelligent management, can effectively guarantee the equipment operation safety and personnel protection, when the electrical equipment occurs leakage or lightning, the current flows into the grounding body through the grounding wire, diffuses through the earth. Because the earth resistivity is low and the area is vast, the current density rapidly reduces, avoids the harm of local high voltage, the resistance formed by the grounding body and the soil contact, directly influences the drainage efficiency. Through the grounding busbar, the equipment shell, metal pipeline etc. are connected to the same potential, eliminates the potential difference, prevents the harm of the contact voltage and the step voltage to the human body, the carbon brush of the grounding device is generally installed on the train axle and rotates with the wheel, when the train runs, the pantograph obtains the current from the contact net, after the electrical equipment in the train, the copper bar is transmitted to the carbon brush assembly, the carbon brush and the axle rub the ring contact, the current is conducted to the axle, finally through the grounding device of the axle and the track, is introduced into the earth, forms the complete loop.

[0003] The grounding device on the market at present mainly divides into two categories of end grinding grounding device and ring grinding grounding device. The end grinding grounding device needs to be observed whether the carbon brush is worn to the limit through disassembling the body, the operation is tedious and cannot be monitored in real time, the ring grinding grounding device can be observed through the transparent window on the body whether the carbon brush is worn, but the carbon powder easily covers the window and leads to observation failure, and there is a monitoring blind area. The deficiency of the prior art lies in that: lack of a grounding device without disassembling, anti-carbon powder interference and can directly show the wear state, leading to low equipment maintenance efficiency, and the safety hidden danger is not timely checked, therefore, the utility model provides a grounding device to solve the problems in the prior art. UTILITY MODEL CONTENT

[0004] In view of the above problems, the utility model aims at providing a grounding device, the grounding device is matched with the limiting piece and the insulating layer lead wire in the middle of the multiple groups of carbon brushes, the insulating layer lead wire is used to rub and damage the insulating layer to form a path and trigger the indicator light alarm, the problems that the traditional device needs to be disassembled and checked or the carbon powder blocks to cause the detection blind area are solved, three groups of carbon brushes rotate with the rotating shaft and contact the power supply terminal in turn, effectively guarantee the stable current transmission, and be applicable to the scene such as rail transit that is strict to electrical safety.

[0005] The utility model discloses a grounding device, including ground main part, multiple carbon brush cooperation mechanism, dynamic power connection mechanism and heat abstract mechanism, the multiple carbon brush cooperation mechanism includes pivot, carbon brush, electrically conductive part, limit piece, pilot lamp and insulating layer wire, the pivot is rotationally arranged in the ground main part, the carbon brush is fixed and is surrounded and is arranged on the pivot, the electrically conductive part is fixed in the ground main part bottom, the limit piece is inserted into the carbon brush, the pilot lamp is fixed in the ground main part outside, the insulating layer wire is connected between the limit piece and the pilot lamp, the dynamic power connection mechanism is arranged below the ground main part, and the heat abstract mechanism is arranged on the ground main part.

[0006] Further improvement lies in that the carbon brush is fixed and surrounded by three groups, and the lower end of the carbon brush is electrically connected with the electrically conductive part.

[0007] Further improvement lies in that the insulating layer wire is bonded and connected with the limit piece through an insulating layer, and the other end of the insulating layer wire is electrically connected with the pilot lamp.

[0008] Further improvement lies in that the dynamic power connection mechanism comprises a ring-shaped base, a power connection port, a power connection wire, a sealing sleeve and a power connection end, the ring-shaped base is fixed on the bottom of the ground main part, the power connection port is formed on one side of the ring-shaped base, the power connection wire is inserted into the power connection port, the sealing sleeve is sleeved on the power connection port, and the power connection end is fixed at the end of the power connection wire.

[0009] Further improvement lies in that the power connection end is in contact with the upper end of the carbon brush, and the power connection end is electrically connected with the carbon brush.

[0010] Further improvement lies in that the heat abstract mechanism comprises a heat dissipation hole, a heat dissipation pipe and a dustproof net, the heat dissipation hole is formed below the ground main part, the heat dissipation pipe is fixed on the heat dissipation hole, and the dustproof net is fixed in the heat dissipation hole.

[0011] Further improvement lies in that the edge of the ground main part is fixed with a plurality of fixed lug plates, the fixed lug plates are arranged in six groups, and a threaded hole is formed in the fixed lug plate.

[0012] The utility model discloses a grounding device, including ground main part, multiple carbon brush cooperation mechanism, dynamic power connection mechanism and heat abstract mechanism, the multiple carbon brush cooperation mechanism includes pivot, carbon brush, electrically conductive part, limit piece, pilot lamp and insulating layer wire, the pivot is rotationally arranged in the ground main part, the carbon brush is fixed and is surrounded and is arranged on the pivot, the electrically conductive part is fixed in the ground main part bottom, the limit piece is inserted into the carbon brush, the pilot lamp is fixed in the ground main part outside, the insulating layer wire is connected between the limit piece and the pilot lamp, the dynamic power connection mechanism is arranged below the ground main part, and the heat abstract mechanism is arranged on the ground main part. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1The utility model discloses a whole elevation sectional view;

[0014] Figure 2 The utility model discloses a whole side elevation sectional view;

[0015] Figure 3 The utility model discloses the A place enlarged schematic view.

[0016] Among them: 1, ground main body, 2, pivot, 3, carbon brush, 4, conducting part, 5, limit piece, 6, pilot lamp, 7, insulating layer wire, 8, annular base, 9, electricity connection, 10, electricity connection wire, 11, sealing sleeve, 12, electricity connection end, 13, heat dissipation hole, 14, heat dissipation pipe, 15, dust screen, 16, fixed lug plate, 17, screw hole. Specific implementation

[0017] In order to deepen the understanding of the utility model, the utility model will be further detailed below in conjunction with examples, and the present embodiment is only used to explain the utility model and does not constitute the limitation to the protection scope of the utility model.

[0018] According to Figure 1 , Figure 2 , Figure 3 The utility model discloses a grounding device, including ground main body 1, many carbon brush 3 cooperation mechanism, dynamic electricity connection mechanism and heat dissipation mechanism, many carbon brush 3 cooperation mechanism includes pivot 2, carbon brush 3, conducting part 4, limit piece 5, pilot lamp 6 and insulating layer wire 7, pivot 2 is rotationally arranged in the middle of ground main body 1, and carbon brush 3 is fixedly arranged around pivot 2, and conducting part 4 is fixedly arranged in the middle of the bottom of ground main body 1, and carbon brush 3 is fixedly arranged around three groups, and the lower end of carbon brush 3 is electrically connected with conducting part 4. The middle of carbon brush 3 is inserted into limit piece 5, pilot lamp 6 is fixedly arranged in the middle of the outside of ground main body 1, insulating layer wire 7 is connected between limit piece 5 and pilot lamp 6, one end of insulating layer wire 7 is connected with limit piece 5 through an insulating layer, and the other end of insulating layer wire 7 is electrically connected with pilot lamp 6. When carbon brush 3 works normally, the insulating wires are isolated from each other due to the insulating layer, so that the insulating wires and pilot lamp 6 cannot form a passage, and pilot lamp 6 is not bright, when carbon brush 3 is worn to the position of limit piece 5, the insulating layer outside insulating layer wire 7 is damaged by friction, so that the exposed part of the corresponding wire is in conduction with carbon brush 3 and pilot lamp 6 to form a closed loop, and pilot lamp 6 is lighted, thereby directly showing the wear state of carbon brush 3, and the problem that the traditional ring grinding grounding device observes the wear of carbon brush 3 through the transparent window on the body, but the carbon powder covers the window to cause observation failure and exist monitoring blind area is solved, and dynamic electricity connection mechanism is arranged below ground main body 1, and heat dissipation mechanism is arranged on ground main body 1.

[0019] The dynamic power connection mechanism comprises a ring-shaped base 8, a power connection port 9, a power connection wire 10, a sealing sleeve 11 and a power connection end 12, the bottom of the grounding body 1 is fixedly provided with the ring-shaped base 8, one side of the ring-shaped base 8 is provided with the power connection port 9, the power connection port 9 is inserted with the power connection wire 10, the power connection port 9 is sleeved with the sealing sleeve 11, and the power connection wire 10 is fixedly provided with the power connection end 12 at the tail end. The power connection end 12 is in contact with the upper end of the carbon brush 3, the power connection end 12 is electrically connected with the carbon brush 3, when the power connection work is carried out, the current is guided to the carbon brush 3 through the power connection wire 10 and the power connection end 12, the carbon brush 3 is in contact with the friction ring of the axle, the current is conducted to the axle, and finally the current is guided to the earth through the grounding device of the axle and the track, so that a complete loop is formed.

[0020] The heat dissipation mechanism comprises heat dissipation holes 13, heat dissipation pipes 14 and dustproof nets 15, the heat dissipation holes 13 are arranged below the grounding body 1, the heat dissipation pipes 14 are fixedly arranged on the heat dissipation holes 13, and the dustproof nets 15 are fixedly arranged in the heat dissipation holes 13. When the device works, air circulation is guided through the heat dissipation holes 13 and the heat dissipation pipes 14, the heat generated by friction is dissipated and cooled through the airflow, and dust is prevented from entering through the dustproof nets 15.

[0021] The fixed lug plates 16 are fixedly arranged around the edges of the grounding body 1, six groups of the fixed lug plates 16 are arranged around, and the threaded holes 17 are formed in the fixed lug plates 16 in a matched mode, so that the grounding body 1 is conveniently and quickly disassembled and assembled, and the grounding body 1 can be opened to replace the carbon brush 3 after the carbon brush 3 is worn to the limiting position.

[0022] The current of the grounding device is input to the upper end of the carbon brush of the multi-carbon brush cooperative mechanism through the power connection wire and the power connection end of the dynamic power connection mechanism, the carbon brush is in dynamic contact with the friction ring of the axle under the driving of the rotating shaft, the current is conducted to the axle, and then the current is guided to the earth through the grounding device of the axle and the track to form a loop; in the multi-carbon brush cooperative mechanism, the three groups of carbon brushes monitor the wear state in real time through the cooperation of the limiting sheets and the insulating layer wires. When working normally, the insulating layer isolates the wire, and the indicator light is not on, when the carbon brush is worn to the position of the limiting sheet, the friction breaks the insulating layer to expose the wire to conduct, and the indicator light is on to alarm; the heat dissipation mechanism guides the airflow to take away the heat generated by friction through the heat dissipation holes, the heat dissipation pipes and the dustproof nets, maintains the running temperature of the device, and the fixed lug plates are convenient for disassembly and maintenance. The design realizes the multiple functions of efficient current conduction, wear state monitoring without disassembly and heat dissipation protection.

[0023] The basic principle, main features and advantages of the utility model are shown and described. The skilled in the art should understand that the utility model is not limited to the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification only illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and the changes and improvements all fall within the scope of the utility model. The protection scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A grounding device, characterized by: The utility model provides a kind of grounding body (1), multiple carbon brush (3) cooperation mechanism, dynamic power connection mechanism and heat dissipation mechanism, the multiple carbon brush (3) cooperation mechanism includes shaft (2), carbon brush (3), conducting piece (4), limiting sheet (5), indicating lamp (6) and insulating layer wire (7), the shaft (2) is rotationally arranged in the middle of the grounding body (1), the carbon brush (3) is fixedly arranged on the shaft (2), the conducting piece (4) is fixedly arranged in the middle of the grounding body (1) bottom, the limiting sheet (5) is inserted into the middle of the carbon brush (3) in matching, the indicating lamp (6) is fixedly arranged in the middle of the grounding body (1) outside, the insulating layer wire (7) is connected between the limiting sheet (5) and indicating lamp (6), the dynamic power connection mechanism is arranged below the grounding body (1), and the heat dissipation mechanism is arranged on the grounding body (1).

2. A grounding device according to claim 1, characterized in that: The carbon brush (3) is fixedly arranged with three groups, and the lower end of the carbon brush (3) is electrically connected with the conducting piece (4).

3. A grounding device according to claim 1, characterized in that: The insulating layer wire (7) is connected between the limiting sheet (5) and the indicating lamp (6) by insulating layer.

4. The grounding device of claim 1, wherein: The dynamic power connection mechanism includes annular base (8), power connection port (9), power connection wire (10), sealing sleeve (11) and power connection end (12), the annular base (8) is fixedly arranged on the bottom of the grounding body (1), the power connection port (9) is formed on one side of the annular base (8), the power connection wire (10) is inserted into the power connection port (9), the sealing sleeve (11) is sleeved on the power connection port (9), and the power connection end (12) is fixedly arranged at the end of the power connection wire (10).

5. A grounding device according to claim 4, characterized in that: The power connection end (12) is in contact with the upper end of the carbon brush (3), and the power connection end (12) is electrically connected with the carbon brush (3).

6. A grounding device according to claim 4, characterized in that: The heat dissipation mechanism includes heat dissipation hole (13), heat dissipation pipe (14) and dust screen (15), the heat dissipation hole (13) is formed below the grounding body (1), the heat dissipation pipe (14) is fixedly arranged on the heat dissipation hole (13), and the dust screen (15) is fixedly arranged in the heat dissipation hole (13).

7. A grounding device according to claim 4, characterized in that: The grounding body (1) is fixedly arranged with fixing lug plate (16) around the edge, the fixing lug plate (16) is arranged with six groups around, and the fixing lug plate (16) is provided with threaded hole (17) in matching.

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