A lightning protection grounding device for a ground stress observation station

Abstract

This utility model relates to the technical field of auxiliary equipment for ground stress detection, and discloses a lightning protection grounding device for a ground stress observation station, comprising: a derrick including two vertically intersecting support rods, with observation equipment installed below the support rods; an insulating cover installed at the top of the support rods, the top width of the derrick being smaller than the diameter of the insulating cover, a lightning rod fixedly connected to the top surface of the insulating cover, and a resistance-reducing module connected to the bottom end of the lightning rod via a grounding wire, the resistance-reducing module being arranged underground; a top plate fixed to the bottom surface of the insulating cover, a connecting assembly being provided on the insulating cover, the connecting assembly including a clamp plate connected to the top plate, the clamp plate being arranged opposite to the top plate and having a tendency to move towards the top plate, and support rods fixed between the clamp plate and the top plate. This device can improve the isolation effect between the lightning rod and the derrick.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary equipment for ground stress detection, and in particular to a lightning protection grounding device for ground stress observation stations. Background Technology

[0002] In-situ stress is usually the stress generated by the influence of gravity, crustal movement and other factors on underground rock strata. With the development of national construction, it is very important to set up in-situ stress observation stations on the site before engineering construction to carry out long-term in-situ stress observation. This can effectively explore the factors affecting structural stability and prevent possible uneven deformation of rock mass.

[0003] However, since in-situ stress observation of underground rock strata is mainly conducted by erecting derricks and extending observation equipment into boreholes, the observation cycle is long. Often, severe weather conditions, such as lightning strikes, can damage the observation equipment on the derricks. Currently, there are few designs for lightning protection devices for in-situ stress observation equipment. In a lightning protection device for a field meteorological observation station (patent number CN220692526U), the lightning rod is fixed to a column with an insulating block. However, other sensor equipment is also installed on the column. The lightning rod and grounding wire are only isolated by an insulating base, resulting in a small isolation range. This makes it easy for the grounding wire to accidentally contact the equipment on the column, affecting the lightning protection effect. Therefore, there is an urgent need for a high-efficiency lightning protection grounding device to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a lightning protection grounding device for a ground stress observation station to solve the problems existing in the prior art and to improve the isolation effect between the lightning rod and the derrick.

[0005] To achieve the above objectives, this utility model provides the following solution: This utility model provides a lightning protection grounding device for a ground stress observation station, comprising: The derrick includes two vertically intersecting struts, with observation equipment installed below the struts; An insulating cover is installed at the top of the support rod. The top width of the derrick is smaller than the diameter of the insulating cover. A lightning rod is fixed to the top surface of the insulating cover. A resistance-reducing module is connected to the bottom of the lightning rod through a grounding wire. The resistance-reducing module is arranged underground. A top plate is fixed to the bottom surface of the insulating cover. A connecting assembly is provided on the insulating cover. The connecting assembly includes a clamp plate connected to the top plate. The clamp plate is arranged opposite to the top plate and has a tendency to move toward the top plate. The support rod is fixed between the clamp plate and the top plate.

[0006] Preferably, the connection component includes: A support ring is disposed on the outer periphery of the bottom end of the insulating cover, and a transmission ring is rotatably connected to the inner ring of the support ring. A transmission rod is fixedly connected to the inner ring side of the transmission ring. The end of the transmission rod away from the transmission ring is fixedly connected to the clamping plate. A control component is provided on the support ring. The control end of the control component is connected to the transmission ring so that the transmission rod rotates around the axis of the support ring.

[0007] Preferably, the control element includes: A lever is fixed to the outer wall of the transmission ring. A groove is provided on the support ring, and the lever slides in the groove. One end of the lever extends away from the transmission ring.

[0008] Preferably, the bottom surface of the insulating cover is an arc-shaped recessed structure, and a gap is provided between the top end of the top plate and the support rod. A spring is provided within the gap, and the two ends of the spring are respectively fixed to the top plate and the clamping plate.

[0009] Preferably, four top plates are equally spaced around the axis of the insulating cover, and the number of clamping plates is the same as that of the top plates and they correspond one-to-one.

[0010] Preferably, the derrick further includes: Four support columns are fixed to the four ends of the two support rods respectively. The support columns extend downward at an inclination away from the support rods, and the top height of the support rods is lower than the top height of the support columns.

[0011] Preferably, a pair of mounting plates are arranged opposite each other between the four support columns, and the two ends of the mounting plates are fixedly connected to the adjacent support columns. A rotating rod is rotatably connected between the pair of mounting plates, and a rolling wheel is sleeved and fixedly connected on the rotating rod.

[0012] Preferably, the resistance reduction module includes several resistance reducers connected in series, and a drill bit is fixedly connected to the bottom end of each resistance reducer.

[0013] The present invention discloses the following technical effects: This invention enhances the isolation effect between the lightning rod and the derrick by installing an insulating cover at the top of the derrick. The diameter of the insulating cover is larger than the length of the two intersecting support rods. By placing the insulating cover on the top of the derrick, the insulation isolation area is increased, thus keeping the grounding wire connected to the insulating cover away from the structure of the derrick and the observation equipment installed on the derrick. In addition, a connecting component is provided on the insulating cover. The movement of the clamping plate is controlled by the connecting component. The support rod is fixed between the clamping plate and the top plate by the movement trend of the clamping plate toward the top plate, ensuring the connection stability between the insulating cover and the support rod. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the lightning rod and insulating cover in this utility model; Figure 2 This is a diagram showing the connection relationship between the support rod and the insulating cover in this utility model; Figure 3 This is a schematic diagram of the transmission ring and support ring in this utility model; Figure 4 This is a diagram showing the connection relationship between the clamping plate and the transmission rod in this utility model; The components are as follows: 1. Support rod; 2. Observation equipment; 3. Insulating cover; 4. Lightning rod; 5. Top plate; 6. Clamping plate; 7. Bolt; 8. Support ring; 9. Transmission ring; 10. Transmission rod; 11. Limiting slide rail; 12. Toggle lever; 13. Spring; 14. Support column; 15. Mounting plate; 16. Rotating rod; 17. Winding wheel; 18. Resistance reducer; 19. Drill bit; 20. Detector; 21. Cable; 22. Grounding wire. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Reference Figures 1-4 This utility model provides a lightning protection grounding device for a ground stress observation station, comprising: The derrick includes two vertically intersecting supports 1, with observation equipment 2 installed below the supports 1; An insulating cover 3 is installed at the top of the support rod 1. The top width of the derrick is smaller than the diameter of the insulating cover 3. A lightning rod 4 is fixed to the top surface of the insulating cover 3. The bottom end of the lightning rod 4 is connected to a resistance reduction module through a grounding wire 22. The resistance reduction module is arranged underground. The top plate 5 is fixed to the bottom surface of the insulating cover 3. The insulating cover 3 is provided with a connecting assembly, which includes a clamping plate 6 connected to the top plate 5. The clamping plate 6 is arranged opposite to the top plate 5 and has a tendency to move toward the top plate 5. The support rod 1 is fixed between the clamping plate 6 and the top plate 5.

[0019] This invention enhances the isolation effect between the lightning rod 4 and the derrick by installing an insulating cover 3 at the top of the derrick. The diameter of the insulating cover 3 is larger than the length of the two intersecting support rods 1. By covering the top of the derrick with the insulating cover 3, the insulation isolation area is increased, thereby keeping the grounding wire 22 connected to the insulating cover 3 away from the structure of the derrick and the observation equipment 2 installed on the derrick. In addition, a connecting component is provided on the insulating cover 3. The movement of the clamping plate 6 is controlled by the connecting component. The support rod 1 is fixed between the clamping plate 6 and the top plate 5 by the movement trend of the clamping plate 6 toward the top plate 5, ensuring the connection stability between the insulating cover 3 and the support rod 1.

[0020] In one embodiment of this technical solution, when the clamping plate 6 and the top plate 5 are used to clamp the support rod 1, a through hole can be drilled through the clamping plate 6, the top plate 5 and the support rod 1, and the bolt 7 can be connected by the internal thread of the through hole to further improve the fixing stability of the clamping plate 6 and the top plate 5 on the support rod 1.

[0021] Specifically, the observation device 2 is a stress detector, which can be fixed on the derrick or placed on one side of the derrick and connected to the detector 20 via cable 21 as needed. It is a conventional technical means and will not be described in detail.

[0022] Furthermore, the connection components include: A support ring 8 is located on the outer periphery of the bottom end of the insulating cover 3, and a transmission ring 9 is rotatably connected to the inner ring of the support ring 8. The transmission rod 10 is fixedly connected to the inner ring side of the transmission ring 9. The end of the transmission rod 10 away from the transmission ring 9 is fixedly connected to the clamping plate 6. A control component is provided on the support ring 8. The control end of the control component is connected to the transmission ring 9 so that the transmission rod 10 rotates around the axis of the support ring 8.

[0023] By fixing the support ring 8 to the bottom of the insulating cover 3, the transmission ring 9 is rotated and supported by the support ring 8. The clamping plate 6 is fixed to the transmission ring 9 by the transmission rod 10. The transmission ring 9 is driven and controlled by the control component. During the rotation of the transmission ring 9, the distance between the clamping plate 6 and the top plate 5 is adjusted, so that the support rod 1 can be embedded between the clamping plate 6 and the top plate 5 and the transmission ring 9 can be rotated to fix it.

[0024] Specifically, a limiting slide rail 11 is fixedly connected to the inner ring of the support ring 8, and a limiting groove is opened on the transmission ring 9. The transmission ring 9 is rotatably connected to the support ring 8 by sliding the limiting slide rail 11 with the limiting groove.

[0025] Furthermore, the control components include: The lever 12 is fixed to the outer wall of the transmission ring 9. A groove is provided on the support ring 8, and the lever 12 slides in the groove. One end of the lever 12 extends away from the transmission ring 9.

[0026] The lever 12 slides through the support ring 8 and connects to the slide groove, and the lever 12 is fixedly connected to the transmission ring 9, so that the lever 12 drives the transmission ring 9 to rotate, thereby adjusting the rotation position of the transmission rod 10 and the clamping plate 6.

[0027] Furthermore, the bottom surface of the insulating cover 3 is a concave arc-shaped structure, and there is a gap between the top of the top plate 5 and the support rod 1. A spring 13 is installed in the gap, and the two ends of the spring 13 are fixed to the top plate 5 and the clamping plate 6 respectively.

[0028] By utilizing the arc-shaped recess on the bottom surface of the insulating cover 3, a gap is provided between the top plate 5, which is fixed to the bottom surface of the insulating cover 3, and the support rod 1, which facilitates the installation of the spring 13. The clamping plate 6 is fixed to the transmission rod 10, and the top of the clamping plate 6 is higher than the clamping plate 6 in the horizontal direction, so that the spring 13 can be fixed between the top plate 5 and the clamping plate 6, and the spring 13 is mounted above the support rod 1.

[0029] Furthermore, four top plates 5 are equally spaced around the axis of the insulating cover 3, and the number of clamping plates 6 is the same as that of the top plates 5 and they correspond one-to-one.

[0030] Based on the two intersecting rods 1, four top plates 5 are fixed to the extended ends of the corresponding rods 1 on the bottom surface of the insulating cover 3. Four clamping plates 6 are also provided one-to-one with the top plates 5. By fixing the four clamping plates 6 to the four transmission rods 10, and each of the four transmission rods 10 can be fixed to the transmission ring 9, when the lever 12 is turned, the transmission rods 10 can synchronously drive the four clamping plates 6 to move away from the top plates 5. After the four extended ends of the two rods 1 are respectively inserted between the clamping plates 6 and the top plates 5, the lever 12 can be released to clamp and fix the four extended ends, effectively enhancing the connection strength between the insulating cover 3 and the derrick.

[0031] Furthermore, the derrick also includes: Four support columns 14 are fixed to the four ends of the two support rods 1 respectively. The support columns 14 extend downward at an angle away from the support rods 1, and the top height of the support rods 1 is lower than the top height of the support columns 14.

[0032] Four support columns 14 are fixed to the ends of the four protruding ends of the two support rods 1. The support columns 14 are tilted downwards away from the support rods 1 to form a trapezoidal support structure, which enhances the support stability of the observation equipment 2. The top of the support column 14 extends beyond the support rods 1, which increases the distance between the support rods 1 and the insulating cover 3, providing sufficient space for the spring 13.

[0033] Furthermore, a pair of mounting plates 15 are arranged opposite each other between the four support columns 14. The two ends of the mounting plates 15 are fixedly connected to the adjacent support columns 14. A rotating rod 16 is rotatably connected between the pair of mounting plates 15. A rolling wheel 17 is sleeved and fixedly connected on the rotating rod 16.

[0034] The rotating rod 16 is supported by the mounting plate 15. The rotating rod 16 is used to rotate the reel 17 to the support column 14. When conducting in-situ stress observation, the detection end of the observation equipment 2 is connected to the detector 20 through the cable 21. The cable 21 is wound around the reel 17. The detector 20 is then inserted vertically into the borehole for observation. This is a conventional structure for in-situ stress observation and will not be described in detail.

[0035] Furthermore, the resistance reduction module includes several resistance reducers 18 connected in series, with a drill bit 19 fixedly connected to the bottom end of each resistance reducer 18.

[0036] The resistance is increased by connecting several resistors 18 in series, and the resistors 18 are energized and connected to the grounding wire 22 to provide lightning protection for the observation equipment 2. The resistors 18 can be inserted into the ground by drilling bit 19.

[0037] This utility model provides a working principle for a lightning protection grounding device used in a ground stress observation station: The derrick is erected above the borehole, and the detector 20 of the observation equipment 2 is connected to the cable 21. The cable 21 is wound around the reel 17, and the detector 20 is inserted into the borehole to observe the ground stress. During the process, in order to protect the precision structure such as the observation equipment 2 from lightning, an insulating cover 3 is placed on the top of the derrick. By moving the lever 12, the clamping plate 6 is moved away from the top plate 5, and the support rod 1 is inserted between the clamping plate 6 and the top plate 5. Then, the lever 12 is released, and under the action of the spring 13, the clamping plate 6 moves toward the top plate 5, thereby clamping and fixing the support rod 1, and fixing the lightning rod 4 to the top of the derrick. The insulating cover 3 effectively prevents the grounding wire 22 from contacting the observation equipment 2 on the derrick, and enhances the isolation effect between the lightning rod 4 and the derrick.

[0038] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A lightning protection grounding device for a ground stress observation station, characterized in that, include: The derrick includes two vertically intersecting struts, with observation equipment installed below the struts; An insulating cover is installed at the top of the support rod. The top width of the derrick is smaller than the diameter of the insulating cover. A lightning rod is fixed to the top surface of the insulating cover. A resistance-reducing module is connected to the bottom of the lightning rod through a grounding wire. The resistance-reducing module is arranged underground. A top plate is fixed to the bottom surface of the insulating cover. A connecting assembly is provided on the insulating cover. The connecting assembly includes a clamp plate connected to the top plate. The clamp plate is arranged opposite to the top plate and has a tendency to move toward the top plate. The support rod is fixed between the clamp plate and the top plate.

2. The lightning protection grounding device for a ground stress observation station according to claim 1, characterized in that, The connection component includes: A support ring is disposed on the outer periphery of the bottom end of the insulating cover, and a transmission ring is rotatably connected to the inner ring of the support ring. A transmission rod is fixedly connected to the inner ring side of the transmission ring. The end of the transmission rod away from the transmission ring is fixedly connected to the clamping plate. A control component is provided on the support ring. The control end of the control component is connected to the transmission ring so that the transmission rod rotates around the axis of the support ring.

3. The lightning protection grounding device for a ground stress observation station according to claim 2, characterized in that, The control component includes: A lever is fixed to the outer wall of the transmission ring. A groove is provided on the support ring, and the lever slides in the groove. One end of the lever extends away from the transmission ring.

4. The lightning protection grounding device for a ground stress observation station according to claim 1, characterized in that: The bottom surface of the insulating cover is a concave arc shape. There is a gap between the top of the top plate and the support rod. A spring is installed in the gap, and the two ends of the spring are fixed to the top plate and the clamping plate, respectively.

5. The lightning protection grounding device for a ground stress observation station according to claim 1, characterized in that: The top plate has four plates evenly spaced around the axis of the insulating cover, and the number of clamping plates is the same as that of the top plate and they correspond one-to-one.

6. The lightning protection grounding device for a ground stress observation station according to claim 1, characterized in that, The derrick also includes: Four support columns are fixed to the four ends of the two support rods respectively. The support columns extend downward at an inclination away from the support rods, and the top height of the support rods is lower than the top height of the support columns.

7. The lightning protection grounding device for a ground stress observation station according to claim 6, characterized in that: A pair of mounting plates are arranged opposite each other between the four support columns. The two ends of the mounting plates are fixedly connected to the adjacent support columns. A rotating rod is rotatably connected between the pair of mounting plates, and a rolling wheel is sleeved and fixedly connected on the rotating rod.

8. The lightning protection grounding device for a ground stress observation station according to claim 1, characterized in that: The resistance reduction module includes several resistance reducers connected in series, and a drill bit is fixed to the bottom end of each resistance reducer.

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