CN118073875A - Grounding drill rod assembly - Google Patents
Grounding drill rod assembly Download PDFInfo
- Publication number
- CN118073875A CN118073875A CN202410479931.8A CN202410479931A CN118073875A CN 118073875 A CN118073875 A CN 118073875A CN 202410479931 A CN202410479931 A CN 202410479931A CN 118073875 A CN118073875 A CN 118073875A
- Authority
- CN
- China
- Prior art keywords
- borer
- grounding
- rod
- taking
- clamping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims 4
- 238000000926 separation method Methods 0.000 description 7
- 230000004308 accommodation Effects 0.000 description 6
- 238000010009 beating Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
Landscapes
- Earth Drilling (AREA)
Abstract
The invention relates to a grounding drill rod assembly, and belongs to the field of cable overhaul equipment. Its technical scheme is, including the ground connection borer, the ground connection borer includes the borer body of at least two sections, can the relative slip between the adjacent two sections borer bodies, all is provided with the holding chamber in every borer body, has seted up the joint groove on the holding chamber inside wall, still includes take out the mechanism, takes out the one end of mechanism and is provided with the joint piece, the joint piece can stretch into holding intracavity and joint groove butt. Through setting up the ground connection borer into the form of multistage borer body combination, when needs take out the ground connection borer, because the frictional force that receives of single one-tenth borer body is less than the holistic frictional force that receives of ground connection borer, the staff can use less power to pull out the one section borer body this moment, later pull out the borer body in proper order, accomplish whole ground connection borer take out work, avoid leading to the ground connection borer to be difficult to pull out under too high frictional force, often stay in the job site because of unable dismantlement, the bore bit of protruding earth's surface all brings the problem of certain influence to traffic, pedestrian safety.
Description
Technical Field
The invention relates to the technical field of cable overhaul equipment, in particular to a grounding drill component.
Background
Good grounding is a precondition for ensuring the safety of personnel and electrical equipment, cable grounding operation is needed in the operations of power construction, overhaul, engineering acceptance and the like, and the safety of the personnel and the equipment on a construction site is protected by connecting a ground wire through a grounding drill.
In order to ensure that the grounding drill rod can be stably inserted into the ground, the grounding drill rod is usually required to be nailed into the ground when the conventional grounding drill rod is used, and the ground is usually hammered by using a steel drill rod as a grounding point through tools such as an insulating hammer to finish the work of the grounding drill rod to be nailed into the ground surface, so that the grounding drill rod is stably nailed into the ground.
However, the above operation still has a certain problem, if in order to be convenient for pull out the staff with the earth borer stretch into the distance of subsurface can shorten, in order to reduce the frictional force between earth borer and the soil and be convenient for the earth borer pull out after the operation is accomplished, this moment the earth borer degree of firmness reduces, there is rocking, there is the risk of virtual joint in the operation process, there is great threat to staff and field device safety, for this earth borer's buries more than 50cm, sometimes because of it is unknown to the earth's surface condition, prick earth borer in root or other stereoplasm layer, when the construction is accomplished demolishd the earth connection, lead to the earth borer to be difficult to pull out under too high frictional force, often be detained at the job site because of unable dismantlement, the bore bit of protruding earth surface all has certain influence to traffic, pedestrian safety.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the grounding drill rod assembly convenient to pull out, and solves the problems that the drill rod body is difficult to pull out due to too high friction force in the prior art, and further cannot be detached to stay on a construction site, and the drill rod protruding out of the ground surface has certain influence on traffic and pedestrian safety.
The technical scheme adopted by the invention is as follows:
The grounding drill rod assembly comprises a grounding drill rod assembly and a taking-out mechanism, wherein the grounding drill rod assembly comprises at least two sections of drill rod bodies, two adjacent sections of drill rod bodies can slide relatively, each drill rod body is internally provided with a containing cavity, and the inner side wall of each containing cavity is provided with a clamping groove; one end of the taking-out mechanism is provided with a clamping piece, and the clamping piece can extend into the accommodating cavity to be abutted with the clamping groove. Through setting up the grounding borer into the form of multistage borer body combination, when needs take out the grounding borer, stretch into the holding intracavity of the top borer body with the joint piece of taking out the mechanism, then the joint piece blocks the joint groove, upwards pull out the mechanism, the top borer body upwards moves this moment, because the frictional force that singly one section borer body receives is less than the holistic frictional force that receives of grounding borer, the staff can pull out one section borer body with less force this moment, then pull out the borer body in proper order, accomplish the work of taking out of whole grounding borer, avoid leading to the grounding borer to be difficult to pull out under too high frictional force, often stay in the job site because of unable dismantlement, the problem that the bore bit of protruding earth surface all brings certain influence to traffic, pedestrian safety.
Preferably, two adjacent sections of drill bodies are respectively provided with a guide groove and a guide piece on the end faces of the adjacent sides, and the guide pieces can slide in the guide grooves. Through guide way and the guide piece that set up, can be when pounding into the earth borer, a plurality of borers can be in same straight line up motion, avoided beating the skew between the borer body that vibrations lead to in-process.
Preferably, the guide grooves are at least two, the number of the guide pieces is the same as that of the guide grooves, and the guide pieces are arranged in one-to-one correspondence with the guide grooves. Through a plurality of guide slots and the guide piece that set up, can avoid taking place between the adjacent borer body and regard the relative rotation of guide piece as the axle center, further avoided beating the skew between the borer body that vibrations lead to in-process.
Preferably, the taking-out mechanism comprises a taking-out rod, one end of the taking-out rod is connected with the clamping piece, and the other end of the taking-out rod is connected with the handle. Through the handle and the take-out pole that set up, the staff of being convenient for holds the handle and carries out the pulling of joint spare through taking out the pole.
Preferably, the clamping pieces are at least two, and the clamping pieces are uniformly distributed on the same height of the taking-out rod. Through a plurality of joint spare that the equipartition set up, when the staff pulls, a plurality of joint spare can be jointly with joint groove butt, the difficult to extract that the atress inequality leads to when avoiding extracting the borer body.
Preferably, the lower end of the clamping piece is hinged with the lower end of the taking-out rod, the taking-out mechanism further comprises an elastic piece, two ends of the elastic piece are respectively connected to the taking-out rod and the clamping piece, and the elastic piece is always in a compressed state in the working process. Through the elastic component that sets up, can be when stretching into the holding intracavity with the joint spare, the elastic component promotes the joint spare to the butt all the time on holding intracavity wall until with the joint groove butt, ensures that every joint spare homoenergetic and joint groove joint.
Preferably, the take-out rod is further provided with a line collecting groove and a line dividing groove, one end of the line collecting groove is communicated with the outside, the other end of the line collecting groove is communicated with the line dividing groove, the number of the line dividing grooves is the same as that of the clamping pieces and is in one-to-one correspondence, the take-out mechanism further comprises an adjusting rope, and the adjusting rope sequentially penetrates through the line collecting groove and the line dividing groove to be connected with the clamping pieces. Through the line collecting groove, the line distributing groove and the inside regulation rope that set up, when taking out the joint spare in the joint inslot, staff pulls the regulation rope, and the regulation rope pulls the joint spare to the one side removal of taking out the pole, and the joint spare can break away from the joint groove this moment, accomplishes the separation of borer body and take out mechanism.
Preferably, the take-out rod is provided with a containing groove, and the clamping piece can be located in the containing groove. Through the accommodation groove that sets up, the joint spare can remove to the accommodation inslot when the staff pulls the regulation rope, avoids the borer body to have the jam phenomenon with the accommodation chamber when taking out the separation of mechanism.
According to the technical scheme, the invention has the advantages that: through setting up the grounding borer into the form of multistage borer body combination, when needs take out the grounding borer, stretch into the holding intracavity of the top borer body with the joint piece of taking out the mechanism, then the joint piece blocks the joint groove, upwards pull out the mechanism, the top borer body upwards moves this moment, because the frictional force that singly one section borer body receives is less than the holistic frictional force that receives of grounding borer, the staff can pull out one section borer body with less force this moment, then pull out the borer body in proper order, accomplish the work of taking out of whole grounding borer, avoid leading to the grounding borer to be difficult to pull out under too high frictional force, often stay in the job site because of unable dismantlement, the problem that the bore bit of protruding earth surface all brings certain influence to traffic, pedestrian safety. Through guide way and the guide piece that set up, can be when pounding into the earth borer, a plurality of borers can be in same straight line up motion, avoided beating the skew between the borer body that vibrations lead to in-process. Through a plurality of guide slots and the guide piece that set up, can avoid taking place between the adjacent borer body and regard the relative rotation of guide piece as the axle center, further avoided beating the skew between the borer body that vibrations lead to in-process. Through the handle and the take-out pole that set up, the staff of being convenient for holds the handle and carries out the pulling of joint spare through taking out the pole. Through a plurality of joint spare that the equipartition set up, when the staff pulls, a plurality of joint spare can be jointly with joint groove butt, the difficult to extract that the atress inequality leads to when avoiding extracting the borer body. Through the elastic component that sets up, can be when stretching into the holding intracavity with the joint spare, the elastic component promotes the joint spare to the butt all the time on holding intracavity wall until with the joint groove butt, ensures that every joint spare homoenergetic and joint groove joint. Through the line collecting groove, the line distributing groove and the inside regulation rope that set up, when taking out the joint spare in the joint inslot, staff pulls the regulation rope, and the regulation rope pulls the joint spare to the one side removal of taking out the pole, and the joint spare can break away from the joint groove this moment, accomplishes the separation of borer body and take out mechanism. Through the accommodation groove that sets up, the joint spare can remove to the accommodation inslot when the staff pulls the regulation rope, avoids the borer body to have the jam phenomenon with the accommodation chamber when taking out the separation of mechanism.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a structural cross-sectional view of an embodiment of the present invention.
Fig. 3 is an enlarged schematic view of the portion a in fig. 2.
FIG. 4 is a cross-sectional view showing the structure of an exemplary grounding pin according to the present invention.
Fig. 5 is a schematic structural view of a take-out mechanism according to an embodiment of the present invention.
Fig. 6 is an enlarged schematic view of the portion B in fig. 5.
In the figure: 1. a drill rod body; 2. a receiving chamber; 3. a clamping groove; 4. a clamping piece; 5. a guide groove; 6. a guide member; 7. taking out the rod; 8. a handle; 9. an elastic member; 10. line collecting grooves; 11. wire dividing grooves; 12. an adjusting rope; 13. and a containing groove.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the invention are intended to be within the scope of the patent protection.
Examples:
As shown in fig. 1-6, a grounding drill rod assembly comprises a grounding drill rod, wherein the grounding drill rod comprises at least two sections of drill rod bodies 1, two sections of drill rod bodies 1 can slide relatively between two adjacent sections of drill rod bodies 1, a containing cavity 2 is arranged in each drill rod body 1, a clamping groove 3 is formed in the inner side wall of the containing cavity 2, a taking-out mechanism is further arranged at one end of the taking-out mechanism, a clamping piece 4 is arranged at one end of the taking-out mechanism, the clamping piece 4 can extend into the containing cavity 2 and is abutted against the clamping groove 3, the taking-out mechanism comprises a taking-out rod 7, one end of the taking-out rod 7 is connected with the clamping piece 4, the other end of the taking-out rod 7 is connected with a handle 8, at least two cuts are arranged at least in the embodiment, the plurality of clamping pieces 4 are uniformly arranged on the same height of the taking-out rod 7, the lower end of the clamping piece 4 is hinged with the lower end of the taking-out rod 7, the taking-out mechanism further comprises an elastic piece 9, the two ends of the elastic piece 9 are respectively connected with the taking-out rod 7 and the clamping piece 4, the elastic piece 9 is always in a compressed state in the working process, the taking-out rod 7 is provided with a containing groove 13, the clamping piece 4 can be positioned in the containing groove 13, and the arrangement is that the clamping piece 4 of the taking-out mechanism stretches into the containing cavity 2 of the uppermost drill rod 1 when the grounding drill rod needs to be taken out by arranging the grounding drill rod into a mode of combining a plurality of sections of drill rods 1, then the clamping piece 4 clamps the clamping groove 3, the taking-out mechanism is pulled upwards, at the moment, the uppermost drill rod 1 moves upwards, because the friction force born by a single section of drill rod 1 is smaller than the friction force born by the whole grounding drill rod, at the moment, a worker can pull out a section of the drill rod 1 with smaller force, and then sequentially pull out the drill rod 1, the whole grounding drill rod taking-out work is completed, the grounding drill rod is prevented from being difficult to pull out under the excessively high friction force, often stay at the job site because of unable dismantlement, the bore bit of protrusion earth's surface all brings the problem of certain influence to traffic, pedestrian safety, through handle 8 and the pole 7 of taking out that sets up, the staff's hand handle 8 of being convenient for carries out the pulling of joint spare 4 through taking out pole 7, a plurality of joint spare 4 through the equipartition setting, when the staff pulls, a plurality of joint spare 4 can jointly with joint groove 3 butt, avoid pulling out the borer body 1 the difficulty that the uneven atress led to when, through the elastic component 9 that sets up, can be when stretching into joint spare 4 to holding intracavity 2 in, elastic component 9 promotes joint spare 4 all the time to the butt until with joint groove 3 butt on holding intracavity 2 inner wall, ensure that every joint spare 4 all can with joint groove 3 joint, through the holding groove 13 of setting, joint spare 4 can remove to holding groove 13 when the staff pulls adjusting rope 12, joint spare 4 and holding chamber 2 have the phenomenon of blocking when avoiding the separation of borer body 1 and take out the mechanism.
In this embodiment, two adjacent sections of drill rod bodies 1 are respectively provided with guide grooves 5 and guide pieces 6 on the end faces of the adjacent sides, the guide pieces 6 can slide in the guide grooves 5, the guide grooves 5 are at least provided with two and four in this embodiment, the number of the guide pieces 6 is the same as that of the guide grooves 5, and the guide pieces 6 are arranged in one-to-one correspondence with the guide grooves 5. Through the guide way 5 and the guide piece 6 that set up, can be when pounding into the ground connection borer, a plurality of borer bodies 1 can be in same straight line upward movement, avoided beating the skew between the borer body 1 that the in-process vibrations lead to, so set up, through a plurality of guide ways 5 and the guide piece 6 that set up, can avoid taking place between the adjacent borer body 1 and regard guide piece 6 as the relative rotation in axle center, further avoided beating the skew between the borer body 1 that the in-process vibrations lead to.
In this embodiment, still be provided with line collecting groove 10 and branch groove 11 on taking out the pole 7, line collecting groove 10 one end communicates in the outside, line collecting groove 10 other end and branch groove 11 intercommunication, branch groove 11 quantity is the same and the one-to-one setting with joint 4, take out the mechanism still includes adjusting rope 12, adjusting rope 12 passes line collecting groove 10 in proper order and branch groove 11 is connected with joint 4, so set up, through line collecting groove 10 that sets up, branch groove 11 and inside adjusting rope 12, staff pulls adjusting rope 12 when taking out joint 4 in joint 3 inside, adjusting rope 12 pulls joint 4 to one side of taking out the pole 7, joint 4 can break away from joint 3 this moment, accomplish the separation of borer 1 and take out the mechanism.
The operation flow for taking out the grounding drill rod in the embodiment is as follows: when the grounding drill rod needs to be taken out, a worker pulls the take-out rod 7 through the handheld handle 8, stretches the clamping piece 4 of the take-out mechanism into the accommodating cavity 2 of the uppermost drill rod body 1, then clamps the clamping groove 3 by the clamping piece 4, pulls the take-out mechanism upwards, the uppermost drill rod body 1 moves upwards at the moment, because the friction force born by the single section of the drill rod body 1 is smaller than the friction force born by the whole grounding drill rod body, the worker can pull out the section of the drill rod body 1 with smaller force, when the clamping piece 4 is taken out in the clamping groove 3, the worker pulls the adjusting rope 12, the adjusting rope 12 pulls the clamping piece 4 to one side of the take-out rod 7, at the moment, the clamping piece 4 can be separated from the clamping groove 3, the separation of the drill rod body 1 and the take-out mechanism is completed, and then the whole grounding drill rod is pulled out sequentially, so that the whole grounding drill rod is taken out is completed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The grounding drill rod assembly comprises a grounding drill rod, and is characterized by further comprising a taking-out mechanism, wherein the grounding drill rod comprises at least two sections of drill rod bodies (1), the two adjacent sections of drill rod bodies (1) can slide relatively, each drill rod body (1) is internally provided with a containing cavity (2), and the inner side wall of each containing cavity (2) is provided with a clamping groove (3); one end of the taking-out mechanism is provided with a clamping piece (4), and the clamping piece (4) can extend into the accommodating cavity (2) to be abutted with the clamping groove (3).
2. The grounding drill assembly according to claim 1, characterized in that two adjacent drill bodies (1) are provided with guide grooves (5) and guide pieces (6) on adjacent side end surfaces, respectively, the guide pieces (6) being slidable in the guide grooves (5).
3. The grounding drill assembly according to claim 2, characterized in that at least two guide grooves (5) are provided, the number of guide pieces (6) is the same as that of the guide grooves (5), and the guide pieces (6) are arranged in one-to-one correspondence with the guide grooves (5).
4. The grounding drill assembly according to claim 1, characterized in that the extraction mechanism comprises an extraction rod (7), one end of the extraction rod (7) is connected with the clamping piece (4), and the other end of the extraction rod (7) is connected with a handle (8).
5. The grounding drill assembly according to claim 4, wherein at least two clamping pieces (4) are arranged, and the plurality of clamping pieces (4) are uniformly distributed on the same height of the taking-out rod (7).
6. The grounding drill assembly according to claim 5, wherein the lower end of the clamping piece (4) is hinged with the lower end of the taking-out rod (7), the taking-out mechanism further comprises an elastic piece (9), two ends of the elastic piece (9) are respectively connected to the taking-out rod (7) and the clamping piece (4), and the elastic piece (9) is always in a compressed state in the working process.
7. The grounding drill assembly according to claim 6, wherein the take-out rod (7) is further provided with a line collecting groove (10) and a line distributing groove (11), one end of the line collecting groove (10) is communicated with the outside, the other end of the line collecting groove (10) is communicated with the line distributing groove (11), the number of the line distributing grooves (11) is the same as that of the clamping pieces (4) and is in one-to-one correspondence with the number of the clamping pieces (4), the take-out mechanism further comprises an adjusting rope (12), and the adjusting rope (12) sequentially penetrates through the line collecting groove (10) and the line distributing groove (11) to be connected with the clamping pieces (4).
8. A grounding drill assembly as claimed in claim 7, characterized in that the take-out lever (7) is provided with a receiving recess (13), the clamping element (4) being locatable in the receiving recess (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410479931.8A CN118073875B (en) | 2024-04-22 | 2024-04-22 | Grounding drill rod assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410479931.8A CN118073875B (en) | 2024-04-22 | 2024-04-22 | Grounding drill rod assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118073875A true CN118073875A (en) | 2024-05-24 |
| CN118073875B CN118073875B (en) | 2024-07-23 |
Family
ID=91095868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410479931.8A Active CN118073875B (en) | 2024-04-22 | 2024-04-22 | Grounding drill rod assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118073875B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005317300A (en) * | 2004-04-28 | 2005-11-10 | Sankosha Corp | Grounding device and its construction method |
| CN204991982U (en) * | 2015-06-12 | 2016-01-20 | 国网山东夏津县供电公司 | Split type earthing pole |
| CN206041016U (en) * | 2016-07-01 | 2017-03-22 | 谭彦毅 | Practical earth connection in indoor GIS terminal |
| CN207967560U (en) * | 2018-02-09 | 2018-10-12 | 中石化石油工程技术服务有限公司 | Field use ground wire seat stake pull-up |
| CN209747749U (en) * | 2019-05-06 | 2019-12-06 | 宏和机电工程有限公司 | Split type spiral earth bar |
| JP2022056843A (en) * | 2020-09-30 | 2022-04-11 | 東日本旅客鉄道株式会社 | Tool for burying ground electrode and burying method |
| CN218770109U (en) * | 2022-09-23 | 2023-03-28 | 云南电网有限责任公司文山供电分公司 | Spiral grounding device |
| CN117638527A (en) * | 2023-11-24 | 2024-03-01 | 广西电网有限责任公司防城港防城供电局 | Grounding rod |
-
2024
- 2024-04-22 CN CN202410479931.8A patent/CN118073875B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005317300A (en) * | 2004-04-28 | 2005-11-10 | Sankosha Corp | Grounding device and its construction method |
| CN204991982U (en) * | 2015-06-12 | 2016-01-20 | 国网山东夏津县供电公司 | Split type earthing pole |
| CN206041016U (en) * | 2016-07-01 | 2017-03-22 | 谭彦毅 | Practical earth connection in indoor GIS terminal |
| CN207967560U (en) * | 2018-02-09 | 2018-10-12 | 中石化石油工程技术服务有限公司 | Field use ground wire seat stake pull-up |
| CN209747749U (en) * | 2019-05-06 | 2019-12-06 | 宏和机电工程有限公司 | Split type spiral earth bar |
| JP2022056843A (en) * | 2020-09-30 | 2022-04-11 | 東日本旅客鉄道株式会社 | Tool for burying ground electrode and burying method |
| CN218770109U (en) * | 2022-09-23 | 2023-03-28 | 云南电网有限责任公司文山供电分公司 | Spiral grounding device |
| CN117638527A (en) * | 2023-11-24 | 2024-03-01 | 广西电网有限责任公司防城港防城供电局 | Grounding rod |
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| Publication number | Publication date |
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| CN118073875B (en) | 2024-07-23 |
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