Grounding resistance on-line monitoring device

Abstract

The invention relates to a ground resistance on-line monitoring device applied to the field of ground resistance monitoring, before on-line monitoring of ground resistance, a monitor main body needs to be hung on a steel structure of a test circuit, when the steel structure used for hanging is a plate-shaped structure, a second rotating disc is rotated, and when the steel structure used for hanging is a plate-shaped structure, the second rotating disc is rotated; when the steel structure is a cylindrical object, a second rotating disc is used for driving the clamping plate to achieve clamping treatment, then a first rotating disc is rotated, multi-point clamping is achieved, the clamping stability is enhanced, and the clamping effect is improved. The structure with the sunken surface is installed at the top of the steel structure, so that when the effective clamping contact area is reduced, after multi-point clamping operation is finished, the magnetic motion prying pieces located in the sunken areas can protrude out of the surfaces of the side auxiliary plates and the surfaces of the clamping moving plates, and a certain supporting and hanging effect is achieved in the vertical direction.

Description

Technical Field

[0001] The invention relates to an on-line monitoring device for grounding resistance, in particular to an on-line monitoring device for grounding resistance applied in the field of grounding resistance monitoring. Background Art

[0002] The grounding resistance online monitoring device is a device used to monitor the performance of the grounding system in real time. It can detect abnormal conditions of the grounding system in time, thereby ensuring the safe operation of the power system. Crude oil storage tanks, large substations, etc. are all high-level fire and explosion-proof places, and their lightning protection grounding measures have strict requirements, especially the grounding resistance of their lightning protection grounding wires must meet the requirements, so that when a lightning strike occurs, the lightning can be safely introduced into the earth.

[0003] The specification of Chinese invention patent CN117871901A discloses an online monitoring device for ground resistance based on the Internet of Things, which prevents the device from falling due to factors such as shaking of external transmission line towers or wind, and plays a protective role in the installation of the monitoring box.

[0004] The existing online ground resistance monitoring device uses the design of springs and clamps to assist the main body of the monitor to achieve hanging processing during high-altitude monitoring. However, in actual operation, the structure used for hanging in the air has a changeable appearance and posture. When dealing with columnar structures, the design of the clamps and springs has a limited contact area with the surface of the columnar structure, and the hanging stability is limited. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to achieve stable mounting processing of the monitor body when encountering mounting parts with variable shapes and structures during online monitoring of ground resistance.

[0006] In order to solve the above problems, the present invention provides an on-line monitoring device for grounding resistance, comprising a monitoring instrument body mounted on a steel structure on a test line, with extended flat plates installed on both sides of the top of the monitoring instrument, a rotating rod rotatably connected to the top of the flat plate, a gear fixedly sleeved on the surface of the rotating rod, and a No. 1 rotating disk installed on the top of the rotating rod, a rack block meshingly connected to the surface of the gear, a clamping plate fixedly connected to one end of the rack block away from the monitoring instrument body, the front and rear ends of the clamping plate are connected to side auxiliary plates through a rotating member, the side auxiliary plate is rotatably connected to the rotating member, and the clamping plate is fixedly connected to the rotating member;

[0007] A strip groove extending to the inside of the rotating part is provided on one side surface of the side auxiliary plate close to the main body of the monitor, an elastic strip is fixedly connected to the inner wall of the strip groove, a slider slidably connected to the inside of the strip groove is connected to the tail end of the elastic strip, a traction rope extending to the outside of the side auxiliary plate is connected to the tail end of the slider, an arc groove is provided on one side surface of the side auxiliary plate away from the main body of the monitor, and a short rod for guiding the traction rope is provided inside the strip groove, and the part of the traction rope located in the strip groove moves along the strip groove when the elastic strip is deformed in a straight direction;

[0008] The top of the rotating rod is rotatably connected to the winding rod through a rotating shaft, and the top of the winding rod is fixedly connected to the No. 2 rotating disk, and the tail ends of the two traction ropes on one side of the monitor body are connected to the surface of the winding rod, and the No. 1 rotating disk and the No. 2 rotating disk are both connected through a damping rotating shaft.

[0009] In the above-mentioned ground resistance online monitoring device, by utilizing the cooperation of structures such as the clamping plate, the side auxiliary plate, the No. 1 rotating disk, the No. 2 rotating disk and the slider, the clamping mode can be switched between the plate structure and the columnar structure, thereby ensuring the stability of the clamping effect.

[0010] As a further improvement of the present application, the length of the elastic strip in the initial state is smaller than the length of the strip groove in the rotating part, the arc groove and the strip groove overlap horizontally in the initial state, and the end of the elastic strip connected to the slider passes through the interior of the arc groove.

[0011] As a further improvement of the present application, a rubber layer is installed on the surface of one side of the side auxiliary plate and the clamping plate close to the monitor body, and the length of the side auxiliary plate is not greater than the length of the clamping plate.

[0012] As a further improvement of the present application, image collectors are installed on both side surfaces of the monitor body, and multiple laser ranging sensors are installed on the bottom of one side surface of the side auxiliary plate and the clamping plate close to the monitor body.

[0013] As a further improvement of the present application, cavities are provided inside the side auxiliary plates and the clamping plates near the bottom ends, an electric extension rod is installed inside each cavity, and an extrusion plate is connected to the power end of each electric extension rod.

[0014] As a further improvement of the present application, an auxiliary installation system is also included, which includes an initial acquisition module and an extended hanging module. The initial acquisition module and the image collector are signal-connected, wherein the initial acquisition module is used to collect the shape of the steel structure on both sides of the monitor body, and the extended hanging module is used to extend the overlapping contact length of the side auxiliary plate and the clamping plate with the steel structure in the vertical direction.

[0015] As another improvement of the present application, a plurality of rectangular grooves are provided on the side surface of the side auxiliary plate and the clamping plate close to the monitor body, and the rectangular grooves are located below the strip grooves, a magnetic prying piece is rotatably connected inside the rectangular grooves, and rubber plates are installed on the top of the magnetic prying piece and on the side surface close to the monitor body, and an electromagnetic strip is installed inside the rectangular grooves.

[0016] As another improved supplement of the present application, a pressure sensor is installed inside the rubber plate, and the pressure sensor is connected to the electromagnetic strip signal, and the electromagnetic strip is connected to the image collector signal.

[0017] In summary, before the online monitoring of ground resistance is performed in the present application, the main body of the monitor needs to be mounted on the steel structure of the test line. When the steel structure used for mounting is a plate-shaped structure, the No. 1 rotating disk remains in a non-rotating state. At this time, under the action of the slider and the elastic strip, the side auxiliary plate and the clamping plate are in a horizontal constraint state. Then the No. 2 rotating disk is rotated so that the rack block drives the clamping plate and the side auxiliary plate connected with the constraint to approach the steel structure, thereby realizing the clamping process. When the steel structure is a columnar body, the No. 2 rotating disk can be used to drive the clamping plate to realize the clamping process. Then, rotate the No. 1 rotating disk to drive the two side auxiliary plates to first release the constrained connection state with the rotating parts, and then deflect to achieve multi-point clamping and enhance the clamping stability. When a structure with a concave surface is installed on the top of the steel structure to reduce the effective area of ​​the clamping contact, after the multi-point clamping operation is completed, adjust the direction of the magnetic force between the electromagnetic strip and the magnetic prying piece according to whether the pressure sensor detects the extrusion effect, so that the magnetic prying piece located in the concave area can protrude from the surface of the side auxiliary plate and the clamping plate, and play a certain supporting and hanging role in the vertical direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the first implementation method of the present application;

[0019] Figure 2 This is a diagram showing the internal structure of the strip groove according to the first embodiment of the present application;

[0020] Figure 3 For this application Figure 2 A is an enlarged schematic diagram;

[0021] Figure 4 This is a structural diagram of an arc groove according to the first embodiment of the present application;

[0022] Figure 5 This is a state diagram of the steel structure of the first embodiment of the present application when the plate-like structure is clamped;

[0023] Figure 6 This is a state diagram of the steel structure of the first embodiment of the present application when it is a columnar structure clamped;

[0024] Figure 7 This is a state diagram of the first embodiment of the present application in which a cone is installed on the top of the steel structure, resulting in insufficient effective contact area when the side auxiliary plate and the clamping plate are clamped;

[0025] Figure 8 This is a state diagram of a steel structure of the second embodiment of the present application when a structure with a concave surface is installed on the top of the steel structure;

[0026] Fig. 9 This is an installation diagram of the electromagnetic strip and the magnetic prying member of the second embodiment of the present application;

[0027] Fig.10 This is a state diagram of the magnetic prying piece protruding out of the clamping plate according to the second embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Monitor body; 2. Side auxiliary plate; 3. Rack block; 4. Clamping plate; 5. Rotating part; 6. No. 1 rotating disk; 61. Winding rod; 7. No. 2 rotating disk; 8. Gear; 9. Electromagnetic strip; 10. Magnetic pry piece; 21. Strip groove; 22. Sliding block; 23. Elastic strip; 24. Traction rope; 25. Arc groove. DETAILED DESCRIPTION

[0030] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] Figure 1-4 The invention shows an on-line monitoring device for ground resistance, which comprises a monitoring instrument body 1 mounted on a steel structure on a test line, and outwardly extending flat plates are installed on both sides of the top of the monitoring instrument 1, and a rotating rod is rotatably connected to the top of the flat plate, and a gear 8 is fixedly sleeved on the surface of the rotating rod, and a first rotating disk 6 is installed on the top of the rotating rod, and a rack block 3 is meshingly connected to the surface of the gear 8, and a clamping plate 4 is fixedly connected to one end of the rack block 3 away from the monitoring instrument body 1, and the front and rear ends of the clamping plate 4 are connected to the side auxiliary plate 2 through a rotating member 5, and the side auxiliary plate 2 is rotatably connected to the rotating member 5, and the clamping plate 4 is fixedly connected to the rotating member 5;

[0033] A strip groove 21 extending to the inside of the rotating member 5 is provided on one side surface of the side auxiliary plate 2 close to the monitor body 1, an elastic strip 23 is fixedly connected to the inner wall of the strip groove 21, a slider 22 slidably connected to the inside of the strip groove 21 is connected to the tail end of the elastic strip 23, a traction rope 24 extending to the outside of the side auxiliary plate 2 is connected to the tail end of the slider 22, an arc groove 25 is provided on one side surface of the side auxiliary plate 2 away from the monitor body 1, and a short rod for guiding the traction rope 24 is provided inside the strip groove 21, and the part of the traction rope 24 located in the strip groove 21 moves along the strip groove 21 when the elastic strip 23 is deformed in a straight direction;

[0034] The top of the rotating rod is rotatably connected to the winding rod 61 via a rotating shaft, and the top of the winding rod 61 is fixedly connected to the second rotating disk 7, and the tail ends of the two traction ropes 24 on one side of the monitoring instrument body 1 are connected to the surface of the winding rod 61, and the number one rotating disk 6 and the number two rotating disk 7 are both connected via a damping rotating shaft.

[0035] In the initial state, the length of the elastic strip 23 is smaller than the length of the strip groove 21 in the rotating member 5 . In the initial state, the arc groove 25 and the strip groove 21 overlap in the horizontal direction, and the end of the elastic strip 23 connected to the slider 22 passes through the interior of the arc groove 25 .

[0036] Specifically, when the monitoring instrument body 1 is mounted, the first rotating disk 6 can be selectively used according to the shape of the steel structure (that is, the mounting part, the object to be mounted);

[0037] Figure 5 As shown, when the steel structure is a plate-like structure, the rack block 3 can be driven to approach the monitor body 1 by rotating the No. 2 rotating disk 7, and the No. 1 rotating disk 6 does not rotate at this time, so that the slider 22 can keep half of it in the strip groove 21 in the side auxiliary plate 2 and the other half in the strip groove 21 of the rotating member 5, so that the side auxiliary plate 2 and the clamping plate 4 are kept in a horizontal state, thereby ensuring that in the process of the rack block 3 approaching the monitor body 1, the clamping plate 4 and the side auxiliary plate 2 can both clamp the steel structure to ensure the stability of the mounting;

[0038] Figure 6 It is shown that when the steel structure is a columnar structure, the clamping of a single plate-like structure has a limited contact area with the column (only limited to the tangential contact state). At this time, the No. 2 rotating disk 7 can be rotated first, so that the clamping plate 4 approaches and clamps the surface of the column to form a preliminary clamping, and then the No. 1 rotating disk 6 is rotated to drive the winding rod 61 to rotate the winding traction rope 24, thereby driving the slider 22 away from the rotating member 5, so that the initial constraint state between the side auxiliary plate 2 and the rotating member 5 is released, and then the slider 22 moves to the end of the strip groove 21 away from the rotating member 5. As the winding continues, the side auxiliary plate 2 will rotate and fit to the surface of the column, forming a multi-point clamping effect (in this process, the elastic strip 23 is stretched, and the stretched part of the elastic strip 23 is exposed to the outside of the rotating member 5 through the arc groove 25, which will not affect the subsequent elastic strip 23 driving the slider 22 to rebound and reset).

[0039] A rubber layer is installed on the side surfaces of the side auxiliary plate 2 and the clamping plate 4 close to the monitor body 41 , and the length of the side auxiliary plate 2 is not greater than the length of the clamping plate 4 .

[0040] Specifically, the design of the rubber layer can make the clamping effect more stable, and the length design of the side auxiliary plate 2 ensures that the side auxiliary plate 2 will not be blocked by the side surface of the monitor body 1 during multi-point clamping due to being too long.

[0041] Image collectors are installed on both side surfaces of the monitor body 1 , and a plurality of laser ranging sensors are installed on the bottom of one side surface of the side auxiliary plate 2 and the clamping plate 4 close to the monitor body 1 .

[0042] A cavity is provided near the bottom end of the side auxiliary plate 2 and the clamping plate 4. An electric extension rod is installed inside each cavity, and an extrusion plate is connected to the power end of each electric extension rod.

[0043] It also includes an auxiliary installation system, which includes an initial acquisition module and an extended hanging module. The initial acquisition module is signal-connected to the image collector, wherein the initial acquisition module is used to collect the shape of the steel structure on both sides of the monitor body 1, and the extended hanging module is used to extend the overlapping contact length of the side auxiliary plate 2 and the clamping plate 4 with the steel structure in the vertical direction.

[0044] Specifically, the image collector is used to assist in determining the shape of the steel structure on both sides of the monitor body 1, and to determine whether the clamping method during hanging is single-sided clamping (for plate-like bodies) or multi-point clamping (for columnar bodies). If there is a cone-shaped body, the clamping effect of the multi-point clamping method is significantly weaker than the clamping effect of the columnar body. At this time, it is necessary to start the electric extension rod to drive the extrusion plate to slide down, and generally extend the length of the side auxiliary plate 2 and the clamping plate 4, so that the extended side auxiliary plate 2 and the clamping plate 4 can contact and clamp the columnar body under the cone when performing multi-point clamping (and the plate-shaped body under the cone when single-sided clamping) (such as Figure 7 shown).

[0045] The second implementation method:

[0046] Fig. 9 It is shown that a plurality of rectangular grooves are provided on the side surface of the side auxiliary plate 2 and the clamping plate 4 close to the monitor body 1, and the rectangular grooves are located below the strip grooves 21, a magnetic prying piece 10 is rotatably connected inside the rectangular grooves, and rubber plates are installed on the top of the magnetic prying piece 10 and the side surface close to the monitor body 1, and an electromagnetic strip 9 is installed inside the rectangular grooves.

[0047] A pressure sensor is installed inside the rubber plate, and the pressure sensor is connected to the electromagnetic strip 9 by signal, and the electromagnetic strip 9 is connected to the image collector by signal.

[0048] Different from the first embodiment, this embodiment is directed to a steel structure with an insulator or a similar structure with a concave surface (such as Figure 8As shown), the clamping effect of the side auxiliary plate 2 and the clamping plate 4 is weakened (due to the presence of the depression, the contact area is reduced, so the clamping effect is weakened).

[0049] Specifically, when there is a depression on the surface of the steel structure (the image collector can obtain this information), the side auxiliary plate 2 and the clamping plate 4 are first deflected to form a multi-point clamping effect. At this time, there is a magnetic attraction between the electromagnetic strip 9 and the magnetic prying piece 10, so the surfaces of the side auxiliary plate 2 and the clamping plate 4 can be kept horizontal. Subsequently, the areas on the surfaces of the side auxiliary plate 2 and the clamping plate 4 corresponding to the depressions on the surface of the steel structure are not squeezed. Therefore, the pressure sensor can send a start signal to the electromagnetic strip 9. At this time, the electromagnetic strip 9 and the magnetic prying piece 10 in the corresponding area are in a magnetic repulsion state, so that the magnetic prying piece 10 is slightly deflected, protruding from the surfaces of the side auxiliary plate 2 and the clamping plate 4, and having a vertical abutment effect on the depressed surface of the steel structure, thereby enhancing the hanging stability (such as Fig.10 shown).

[0050] In summary, before the online monitoring of the ground resistance is performed in the present application, the monitor body 1 needs to be mounted on the steel structure of the test line. When the steel structure used for mounting is a plate-shaped structure, the No. 1 rotating disk 6 remains in a non-rotating state. At this time, under the action of the slider 22 and the elastic strip 23, the side auxiliary plate 2 and the clamping plate 4 are in a horizontally constrained state. Then the No. 2 rotating disk 7 is rotated so that the rack block 3 drives the clamping plate 4 and the constrained side auxiliary plate 2 close to the steel structure, thereby achieving clamping processing. When the steel structure is a columnar body, the No. 2 rotating disk 7 can be used to drive the clamping plate 4 to achieve clamping processing. , and then rotate the No. 1 rotating disk 6 to drive the two side auxiliary plates 2 to first release the constrained connection state with the rotating member 5, and then deflect to achieve multi-point clamping and enhance the clamping stability. When a structure with a concave surface is installed on the top of the steel structure to reduce the effective clamping contact area, after the multi-point clamping operation is completed, the direction of the magnetic force between the electromagnetic strip 9 and the magnetic prying piece 10 is adjusted according to whether the pressure sensor detects the extrusion effect, so that the magnetic prying piece 10 located in the concave area can protrude from the surface of the side auxiliary plate 2 and the clamping plate 4, and play a certain supporting and hanging role in the vertical direction.

[0051] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An on-line monitoring device for ground resistance, comprising a monitoring instrument body (1) mounted on a steel structure on a test line, characterized in that: Both sides of the top of the monitoring instrument (1) are provided with extended flat plates, the top of the flat plates are rotatably connected to a rotating rod, the surface of the rotating rod is fixedly sleeved with a gear (8), and a No. 1 rotating disk (6) is installed on the top of the rotating rod, the surface of the gear (8) is meshingly connected with a rack block (3), the end of the rack block (3) facing away from the monitoring instrument body (1) is fixedly connected to a clamping plate (4), the front and rear ends of the clamping plate (4) are connected to the side auxiliary plate (2) through a rotating member (5), and the side auxiliary plate (2) and the rotating member (5) are rotatably connected, and the clamping plate (4) and the rotating member (5) are fixedly connected; A strip groove (21) extending to the inside of the rotating member (5) is provided on a side surface of the side auxiliary plate (2) close to the monitor body (1), the inner wall of the strip groove (21) is fixedly connected with an elastic strip (23), the tail end of the elastic strip (23) is connected with a slider (22) slidably connected to the inside of the strip groove (21), the tail end of the slider (22) is connected with a traction rope (24) extending to the outside of the side auxiliary plate (2), an arc groove (25) is provided on a side surface of the side auxiliary plate (2) away from the monitor body (1), and a short rod for guiding the traction rope (24) is provided inside the strip groove (21), and the part of the traction rope (24) located in the strip groove (21) moves along the strip groove (21) when the elastic strip (23) is deformed in a straight direction; The top of the rotating rod is rotatably connected to a winding rod (61) via a rotating shaft, the top of the winding rod (61) is fixedly connected to a second rotating disk (7), and the tail ends of two traction ropes (24) on one side of the monitoring instrument body (1) are both connected to the surface of the winding rod (61), and the first rotating disk (6) and the second rotating disk (7) are both connected via a damping rotating shaft.

2. The ground resistance online monitoring device according to claim 1 is characterized in that: In the initial state, the length of the elastic strip (23) is smaller than the length of the strip groove (21) in the rotating member (5); in the initial state, the arc groove (25) and the strip groove (21) overlap in the horizontal direction, and the end of the elastic strip (23) connected to the sliding block (22) passes through the interior of the arc groove (25).

3. The grounding resistance online monitoring device according to claim 1 is characterized in that: The side surfaces of the side auxiliary plate (2) and the clamping plate (4) close to the monitor body (41) are both provided with a rubber layer, and the length of the side auxiliary plate (2) is not greater than the length of the clamping plate (4).

4. The grounding resistance online monitoring device according to claim 1 is characterized in that: Image collectors are installed on both side surfaces of the monitor body (1), and a plurality of laser distance measuring sensors are installed on the bottom of the side auxiliary plate (2) and the clamping plate (4) on one side surface close to the monitor body (1).

5. The grounding resistance online monitoring device according to claim 4 is characterized in that: The side auxiliary plate (2) and the clamping plate (4) are both provided with cavities near the bottom ends, an electric extension rod is installed inside each of the cavities, and the power end of each electric extension rod is connected to an extrusion plate.

6. The ground resistance online monitoring device according to claim 5, characterized in that: The invention also comprises an auxiliary installation system, wherein the auxiliary installation system comprises an initial acquisition module and an extended mounting module, wherein the initial acquisition module is connected to the image acquisition device signal, wherein the initial acquisition module is used to collect the shape of the steel structure on both sides of the monitoring instrument body (1), and the extended mounting module is used to extend the overlapping contact length of the side auxiliary plate (2) and the clamping plate (4) with the steel structure in the vertical direction.

7. The grounding resistance online monitoring device according to claim 4 is characterized in that: The side auxiliary plate (2) and the clamping plate (4) are provided with a plurality of rectangular grooves on the side surface close to the monitor body (1), and the rectangular grooves are located below the strip grooves (21). A magnetic prying piece (10) is rotatably connected inside the rectangular grooves, and a rubber plate is installed at the top of the magnetic prying piece (10) and the side surface close to the monitor body (1). An electromagnetic strip (9) is installed inside the rectangular grooves.

8. The grounding resistance online monitoring device according to claim 7 is characterized in that: A pressure sensor is installed inside the rubber plate, and the pressure sensor is connected to an electromagnetic strip (9) by signal, and the electromagnetic strip (9) is connected to an image collector by signal.

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