CN218351039U

CN218351039U - Analog grounding device for measuring grounding resistance

Info

Publication number: CN218351039U
Application number: CN202222406824.1U
Authority: CN
Inventors: 杜云飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-09-12
Filing date: 2022-09-12
Publication date: 2023-01-20
Anticipated expiration: 2032-09-12

Abstract

The utility model discloses a be used for ground resistance measuring simulation earthing device, the power distribution box comprises a box body, the surface of box fixed mounting respectively has ground connection post, electric potential post and current post, and the bottom of ground connection post, electric potential post and current post extends to inside the box to mutual electric connection is in the same place, and the centre of electric potential post is established ties and is had first resistance, and the centre of current post is established ties and is had second resistance, and the centre of ground connection post is established ties and has a plurality of varistor subassemblies, the varistor subassembly includes insulating seat, and insulating seat fixed mounting is respectively at the interior diapire and the interior roof of box, and the fixed surface of insulating seat installs the cassette, and the middle card of cassette is equipped with the spliced pole, and the middle fixed mounting of spliced pole has an insulating cylinder. This earthing device when needs change ground resistance, can rotate different knobs, alright realize the resistance value of different precisions and adjust, the resistance adjustment precision of greatly increased ground connection post to let the electric power workman obtain better training.

Description

Analog grounding device for measuring grounding resistance

Technical Field

The utility model relates to a simulation earthing device technical field specifically is a simulation earthing device for ground resistance measurement.

Background

At present, when the grounding resistance is measured, a current voltmeter method (namely a tripolar method) is generally adopted for measurement, the grounding resistance measuring instrument is required to be simultaneously connected with a grounding body, a current probe and a potential probe, however, the distance between the current probe and the grounding body is 40 meters, and the measurement can be carried out only by an outdoor field with the width or the length of more than 40 meters.

When training and checking electric power workers, it is obviously difficult to provide equivalent teaching and checking fields, and outdoor training and checking are also easily affected by severe weather, so that at present, when training or checking ground resistance measurement of electric power workers, simulation grounding equipment is generally used for checking.

However, most of the existing analog grounding devices adjust the grounding resistance through a simple sliding rheostat, and in such an adjusting mode, the resistance value adjusting range of the grounding resistance is very limited, which is not beneficial to training of electric power workers.

Therefore, the utility model provides a wide simulation earthing device for ground resistance measurement of control range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simulation earthing device for ground resistance measurement to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a simulation earthing device for ground resistance measurement, includes the box, the surface of box fixed mounting respectively has ground connection post, electric potential post and current post, and ground connection post, electric potential post and current post's bottom extends to inside the box to mutual electric connection is in the same place, and the centre of electric potential post is established ties there is first resistance, and the centre of current post is established ties there is second resistance, and the centre of ground connection post is established ties there are a plurality of varistor subassemblies, the varistor subassembly includes the insulator seat, and the insulator seat is fixed mounting respectively in the interior diapire and the interior roof of box, and the fixed surface of insulator seat installs the cassette, and the centre card of cassette is equipped with the spliced pole, and the centre fixed mounting of spliced pole has an insulator, and the surperficial spiral of insulator inlays and is equipped with the resistance wire, and the inside slip of box is provided with electrically conductive slide, and the fixed surface of slide installs elastic conducting strip, and the resistance wire is hugged closely with the resistance wire, the inside of box sets up drive assembly, through the drive slide slip of drive assembly.

Preferably, the drive assembly comprises a screw rotatably mounted on a surface of the insulating base.

Preferably, the surface of the insulating base is fixedly provided with a guide rod, the sliding base is sleeved on the surface of the screw in a threaded manner, and the sliding base is sleeved on the surface of the guide rod in a sliding manner.

Preferably, the upper surface of the box body is rotatably provided with a knob, and a rotating shaft of the knob extends into the box body and is fixedly connected with the end part of the screw rod.

Preferably, the surface fixing of an insulating cylinder is provided with a first binding post, the first binding post is connected with the end of the resistance wire, the surface fixing of the insulating base is provided with a connecting base, the connecting base is electrically connected with the sliding base through a guide rod, and the surface fixing of the connecting base is provided with a second binding post.

Preferably, the surface of the clamping seat is provided with a limiting seat, the limiting seat is provided with a fixing bolt, the fixing of the limiting seat and the clamping seat is realized through the fixing bolt, and when the limiting seat is fixed with the clamping seat, the connecting column is also kept fixed.

Advantageous effects

The utility model provides a be used for ground resistance measuring simulation earthing device possesses following beneficial effect:

1. this a simulation earthing device for ground resistance measurement, when the resistance wire in current installation can not satisfy the regulation demand of ground connection post resistance range in fact, can loosen fixing bolt, then take off spacing seat, this moment, alright take off whole insulating cylinder and take the spliced pole and resistance wire together, then more change the insulating cylinder of installing bigger resistance wire, so, alright increase the control range of ground connection post resistance, it is more nimble to use.

2. This a simulation earthing device for ground resistance measurement when needs change ground resistance, can rotate different knobs, alright realize the resistance value of different scopes and adjust, further increase the regulation convenience of ground connection post resistance to let the electric power workman obtain better training.

Drawings

FIG. 1 is a schematic view of the three-dimensional structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is a schematic structural view of the varistor assembly of the present invention;

fig. 4 is the schematic view of the split structure of the varistor assembly of the present invention.

In the figure: the device comprises a box body 1, a grounding column 2, a potential column 3, a current column 4, a first resistor 5, a second resistor 6, an insulating base 7, a clamping base 8, a connecting column 9, an insulating cylinder 10, a resistance wire 11, a sliding base 12, a conducting strip 13, a guide rod 14, a knob 15, a first wiring column 16, a connecting base 17, a second wiring column 18, a limiting base 19 and a screw rod 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a simulation earthing device for ground resistance measurement, includes box 1, and the surface of box 1 is fixed mounting respectively has earthing rod 2, electric potential post 3 and current post 4, and the bottom of earthing rod 2, electric potential post 3 and current post 4 extends to inside the box 1 to mutual electric connection together, and the centre of electric potential post 3 is established ties and is had first resistance 5, and the centre of current post 4 is established ties and has second resistance 6, and the centre of earthing rod 2 is established ties and has a plurality of varistor subassemblies, the varistor subassembly includes insulating seat 7, and insulating seat 7 is fixed mounting respectively at the inner diapire and the interior roof of box 1, and the fixed surface of insulating seat 7 installs cassette 8, and the middle card of cassette 8 is equipped with spliced pole 9, and the middle fixed mounting of spliced pole 9 has insulating cylinder 10.

Resistance wire 11 is spirally embedded on the surface of insulating cylinder 10, conductive slide 12 is arranged in box 1 in a sliding manner, elastic conductive sheet 13 is fixedly arranged on the surface of slide 12, conductive sheet 13 is tightly attached to resistance wire 11, and it should be noted that the series relation between grounding column 2 and varistor assembly is as follows: the bottom and the resistance wire 11 electric connection of earthing post 2, the bottom electric connection of slide 12 and electric potential post 3 and current post 4 so form the series connection relation, the inside of box 1 sets up drive assembly, and through drive assembly drive slide 12 slip, spacing seat 19 has been set on the surface of cassette 8, and spacing seat 19 has set fixing bolt, realizes the fixed of spacing seat 19 and cassette 8 through fixing bolt, and when spacing seat 19 was fixed with cassette 8, spliced pole 9 also kept fixed.

When the device is used, the ground resistance measuring instrument can measure the ground resistance only by conducting a measuring end with the ground post 2, the potential post 3 and the current post 4 through wires respectively, and when the ground resistance needs to be changed, the sliding seat 12 can be driven to slide through the driving component, so that the conducting plate 13 is driven to slide on the surface of the resistance wire 11, the resistance between the sliding seat 12 and the bottom end of the ground post 2 can be changed, and the resistance of the ground post 2 can be adjusted.

Simultaneously, when resistance wire 11 in the current installation can not satisfy the regulation demand of 2 resistance ranges of ground connection post in fact, can loosen fixing bolt, then take off spacing seat 19, at this moment, alright take connecting post 9 and resistance wire 11 with whole insulating cylinder 10 and take off, then change and install the insulating cylinder 10 of bigger resistance wire 11, so, alright increase the control range of 2 resistance of ground connection post, use more in a flexible way.

The driving assembly comprises a screw 20, the screw 20 is rotatably installed on the surface of the insulating base 7, the guide rod 14 is installed on the fixed surface of the insulating base 7, the sliding base 12 is sleeved on the surface of the screw 20 in a threaded mode, the sliding base 12 is sleeved on the surface of the guide rod 14 in a sliding mode simultaneously, the knob 15 is installed on the upper surface of the box body 1 in a rotating mode, the rotating shaft of the knob 15 extends to the inside of the box body 1, the end portion fixed connection of the screw 20 is connected with the end portion of the insulating cylinder 10, the first binding post 16 is installed on the surface of the insulating cylinder 10 and is connected with the end portion of the resistance wire 11, the connecting base 17 is installed on the fixed surface of the insulating base 7, the connecting base 17 is electrically connected with the sliding base 12 through the guide rod 14, and the second binding post 18 is installed on the surface of the connecting base 17.

It should be noted that, the plurality of varistor modules are all in a series relationship, that is, the first terminal 16 of each varistor module is electrically connected to the second terminal 18 of another varistor module, the first terminal 16 of one of the varistor modules at the two ends is electrically connected to the bottom end of the grounding post 2, and the second terminal 18 of another varistor module is electrically connected to the bottom ends of the potential post 3 and the current post 4.

Therefore, when the grounding resistance needs to be changed, different knobs 15 can be rotated, the knobs 15 can drive the screws 20 to rotate, the screws 20 can drive the sliding seat 12 to slide, so that the conducting strips 13 are driven to slide on the surface of the resistance wire 11, and the resistance between the first binding post 16 and the second binding post 18 can be changed, so that the resistance of the grounding post 2 can be adjusted.

It should be noted that, the resistance wires 11 embedded in each insulating cylinder 10 have different resistances, so that a user can adjust the resistance values with different accuracies by rotating different knobs 15, and the accuracy of resistance adjustment of the grounding post 2 is greatly increased, thereby enabling electric power workers to obtain better training.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A simulation earthing device for measuring earth resistance, includes box (1), its characterized in that: the surface of box (1) is fixed mounting respectively has ground connection post (2), electric potential post (3) and current post (4), and ground connection post (2), the bottom of electric potential post (3) and current post (4) extend to inside box (1), and each other electric connection together, the centre of electric potential post (3) is established ties and is had first resistance (5), and the centre of current post (4) is established ties and is had second resistance (6), and the centre of ground connection post (2) is established ties and is had a plurality of varistor subassemblies, the varistor subassembly includes insulator seat (7), and insulator seat (7) fixed mounting respectively is at the inner diapire and the interior roof of box (1), and the fixed surface of insulator seat (7) installs cassette (8), and the centre card of cassette (8) is equipped with spliced pole (9), and the centre fixed mounting of spliced pole (9) has insulator cylinder (10), and the surface spiral of insulator cylinder (10) has resistance wire (11), and the inside slip of box (1) is provided with electrically conductive slide (12), and the surface fixed mounting of elastic slide (12) has elastic slide (13), and drive resistance wire (11) and drive the drive resistance wire (11) through the drive assembly, slide (1) drive resistance wire (12).

2. An analog grounding device for ground resistance measurement according to claim 1, characterized in that: the driving assembly comprises a screw rod (20), and the screw rod (20) is rotatably arranged on the surface of the insulating seat (7).

3. An analog grounding device for ground resistance measurement according to claim 2, characterized in that: the surface of the insulating seat (7) is fixedly provided with a guide rod (14), the sliding seat (12) is sleeved on the surface of the screw rod (20) in a threaded manner, and the sliding seat (12) is sleeved on the surface of the guide rod (14) in a sliding manner.

4. An analog grounding device for ground resistance measurement according to claim 3, characterized in that: the upper surface of box (1) rotates and installs knob (15), and the pivot of knob (15) extends to inside box (1), and with the tip fixed connection of screw rod (20).

5. An analog grounding device for ground resistance measurement according to claim 4, characterized in that: the surface fixed mounting of insulating cylinder (10) has first terminal (16), and first terminal (16) and resistance wire (11) end connection, and the surface fixed mounting of insulating seat (7) has connecting seat (17), and connecting seat (17) pass through guide bar (14) and slide (12) electric connection, and the surface fixed mounting of connecting seat (17) has second terminal (18).

6. An analog grounding device for ground resistance measurement according to claim 1, characterized in that: the surface of the clamping seat (8) is provided with a limiting seat (19), the limiting seat (19) is provided with a fixing bolt, the limiting seat (19) and the clamping seat (8) are fixed through the fixing bolt, and the connecting column (9) is also fixed when the limiting seat (19) is fixed with the clamping seat (8).