CN111446554B - Multi-loss-prevention grounding device for power transmission line tower, assembling tool and assembling method - Google Patents
Multi-loss-prevention grounding device for power transmission line tower, assembling tool and assembling method Download PDFInfo
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- CN111446554B CN111446554B CN202010186863.8A CN202010186863A CN111446554B CN 111446554 B CN111446554 B CN 111446554B CN 202010186863 A CN202010186863 A CN 202010186863A CN 111446554 B CN111446554 B CN 111446554B
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- 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
- H01R4/28—Clamped connections, spring connections
- H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
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- 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
- H01R4/64—Connections between or with conductive parts having primarily a non-electric function, e.g. frame, casing, rail
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
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Abstract
The invention relates to a multi-loss prevention grounding device for a power transmission line tower, an assembling tool and an assembling method, wherein the grounding device comprises: a bolt including a head and a shank; the first nut comprises a third cylinder, a second arc-shaped bulge is formed at the top of the third cylinder, a plurality of second clamping grooves are formed in the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction and penetrate through the third cylinder and the second arc-shaped bulge, and first through screw holes matched with the screw rods are formed in the third cylinder and the second arc-shaped bulge; the first nut comprises a first nut body and a second nut body, wherein a first through screw hole matched with the screw rod is formed in the first nut body, the first nut body comprises a first end face far away from the head of the bolt and a second end face close to the head of the bolt, a first groove matched with a third cylinder body of the first nut is formed in the first end face, and the third cylinder body of the first nut is embedded in the first groove. Therefore, the anti-theft, anti-damage and anti-corrosion effects of the grounding device can be effectively improved.
Description
Technical Field
The invention relates to a multiple-loss-prevention grounding device for a power transmission line tower, which belongs to the application field of grounding occasions in the fields of power generation, power transmission, power transformation, power distribution, power utilization and the like of a power system, in particular to the safety protection problem when various power equipment is grounded. The invention also provides an assembling tool of the power transmission line tower multiple damage-prevention grounding device and an assembling method of the power transmission line tower multiple damage-prevention grounding device.
Background
The grounding net is a general name for a grounding body which is composed of a plurality of metal grounding electrodes buried in the ground to a certain depth and a mesh structure formed by connecting the grounding electrodes by conductors, and is widely applied to industries such as electric power, buildings, computers, industrial and mining industries, communication and the like, and plays roles of safety protection, shielding and the like. The grounding grid is connected to the power equipment through the grounding down lead, plays the roles of preventing static electricity and a zero potential reference point when in normal operation, plays the role of preventing overvoltage when thunder or insulation faults, plays an important protection role in the personal safety of the power equipment and operators by taking the grounding device as a device for connecting the grounding down lead and the power equipment, and therefore most of the power equipment needs reliable grounding devices to realize the safety protection of personnel and equipment.
At present, in order to measure the grounding resistance conveniently, a standard bolt and a nut are basically adopted to connect a grounding down conductor to power equipment. However, according to the long-term operation and maintenance experience of the power engineering, the ground down lead is not electrified during normal operation, and because the power equipment is usually in the open air and cannot be monitored, theft and artificial damage accidents frequently occur, and when the connection point of the ground down lead is influenced by various environmental factors such as rainwater, dust, haze and dirt, corrosion and looseness easily occur, so that the virtual disconnection of the connection point of the ground down lead is caused, and further, the ground resistance value is increased to a higher value, and higher potential operation risk is caused for the power equipment.
Disclosure of Invention
Therefore, it is necessary to provide a multiple damage prevention type grounding device for a power transmission line tower, an assembling tool and an assembling method for solving the problems of easy theft, easy damage and easy rainwater corrosion existing in the conventional grounding mode.
The utility model provides a multiple loss prevention type earthing device of transmission line shaft tower, includes:
the bolt comprises a head and a screw rod, the head of the bolt comprises a first cylinder, a first arc-shaped bulge is formed at the top of the first cylinder, a plurality of first clamping grooves are formed in the outer circumferential surface of the first cylinder at equal intervals along the circumferential direction and penetrate through the first cylinder and the first arc-shaped bulge, the screw rod comprises a second cylinder, and threads are formed in the outer circumferential surface of the second cylinder;
the first nut comprises a third cylinder, a second arc-shaped bulge is formed at the top of the third cylinder, a plurality of second clamping grooves are formed in the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction and penetrate through the third cylinder and the second arc-shaped bulge, and first through screw holes matched with the screw rods are formed in the third cylinder and the second arc-shaped bulge;
the first nut comprises a first nut body and a second nut body, wherein a first through screw hole matched with the screw rod is formed in the first nut body, the first nut body comprises a first end face far away from the head of the bolt and a second end face close to the head of the bolt, a first groove matched with a third cylinder body of the first nut is formed in the first end face, and the third cylinder body of the first nut is embedded in the first groove.
In one embodiment, the multiple loss prevention type grounding device for the power transmission line tower further comprises: the outer peripheral surface of the second nut is provided with a plurality of third clamping grooves at equal intervals along the circumferential direction, and a third through screw hole matched with the screw rod is formed in the second nut;
the second end face of the first protective cap is provided with a second groove matched with at least part of the second nut, a space is reserved between the first groove and the second groove, and at least part of the second nut is embedded in the second groove.
In one embodiment, the multiple loss prevention type grounding device for the power transmission line tower further comprises: the second end face of the first protective cap is provided with a third groove matched with at least part of the first sealing ring, intervals are arranged among the third groove, the first groove and the second groove, and at least part of the first sealing ring is embedded in the third groove.
In one embodiment, the first protective cap is shaped like a dish, and the first nut and the first protective cap are combined in an embedded mode to form a hemispherical structure integrally.
In one embodiment, the multiple loss prevention type grounding device for the power transmission line tower further comprises: the second protective cap is provided with a fourth through screw hole matched with the screw rod, the second protective cap comprises a third end face close to the head of the bolt and a fourth end face far away from the head of the bolt during installation, a fourth groove matched with the first cylinder of the head of the bolt is formed in the third end face, and the first cylinder of the head of the bolt is embedded in the fourth groove.
In one embodiment, the multiple loss prevention type grounding device for the power transmission line tower further comprises: and a fifth groove matched with at least part of the second sealing ring is arranged on the fourth end surface of the second protective cap, a gap is reserved between the fifth groove and the fourth groove, and at least part of the second sealing ring is embedded in the fifth groove.
In one embodiment, the second protective cap is in a disc shape, and the bolt head and the second protective cap are combined in an embedded mode to form a hemispherical structure integrally.
In one embodiment, the first protective cap and the second protective cap are made of flexible sealing materials.
The multi-damage-prevention grounding device for the power transmission line tower comprises a bolt, a first nut and a first protective cap, wherein the bolt comprises a head and a screw rod, the head of the bolt comprises a first cylinder, a first arc-shaped bulge is formed at the top of the first cylinder, a plurality of first clamping grooves are formed in the outer circumferential surface of the first cylinder at equal intervals along the circumferential direction, the first clamping grooves penetrate through the first cylinder and the first arc-shaped bulge, the screw rod comprises a second cylinder, and threads are formed in the outer circumferential surface of the second cylinder; the first nut comprises a third cylinder, a second arc-shaped bulge is formed at the top of the third cylinder, a plurality of second clamping grooves are formed in the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction and penetrate through the third cylinder and the second arc-shaped bulge, and first through screw holes matched with the screw rods are formed in the third cylinder and the second arc-shaped bulge; the first nut is provided with a first cylindrical body, a first through screw hole is formed in the first nut, the first through screw hole is matched with the screw rod, the first end face of the first nut is far away from the head of the bolt during installation, the second end face of the first nut is close to the head of the bolt, a first groove matched with a third cylindrical body of the first nut is formed in the first end face, and the third cylindrical body of the first nut is embedded in the first groove. Adopt the bolt and the nut of above-mentioned structure, when the assembly, need adopt dedicated assembly tool just can screw up bolt and nut, effectively improved earthing device's theftproof effect, first helmet can prevent the corruption to nut and bolt screw rod such as rainwater, dew simultaneously, has effectively improved earthing device's loss prevention, anticorrosive effect.
The utility model provides a multiple loss prevention type earthing device's of transmission line shaft tower erecting tool, this erecting tool is used for assembling foretell multiple loss prevention type earthing device of transmission line shaft tower, and erecting tool includes: the clamping device comprises a sleeve, a plurality of clamping teeth and a plurality of clamping grooves, wherein the plurality of clamping teeth are arranged at one end of the sleeve and matched with the plurality of first clamping grooves, the plurality of second clamping grooves and the plurality of third clamping grooves, and a plurality of through holes are formed in the outer peripheral surface of the sleeve; the operating rod, the operating rod is the pipe of bending, and the operating rod runs through to set up in a plurality of through-holes.
Above-mentioned multiple loss prevention type earthing device of transmission line shaft tower's erecting tool includes sleeve and action bars, and telescopic one end is equipped with a plurality of latches, and a plurality of latches cooperate with a plurality of first draw-in grooves, a plurality of second draw-in grooves and a plurality of third draw-in grooves, and is equipped with a plurality of through-holes on the telescopic outer peripheral face, and the action bars runs through the setting in a plurality of through-holes. The assembly tool not only can realize quick fastening and disassembly of the grounding device, but also has simple structure and convenient use, adopts a sleeve structure, effectively reduces the volume and the quality of the whole assembly tool, and is convenient for operators to carry about.
An assembling method of a transmission line tower multiple loss prevention type grounding device is used for assembling the transmission line tower multiple loss prevention type grounding device, and comprises the following steps:
sequentially sleeving a second protective cap and a second sealing ring on the bolt screw, embedding the head of the bolt in a fourth groove of the second protective cap, and embedding the second sealing ring in a fifth groove of the second protective cap;
sequentially sleeving a grounding nose of the grounding downlead, a grounding end of the power equipment and a second nut on the bolt screw, and screwing the second nut;
sequentially sleeving a first sealing ring and a first protective cap on the bolt screw, embedding a second nut in a second groove of the first protective cap, and embedding the first sealing ring in a third groove of the first protective cap;
and sleeving the first nut on the bolt screw, embedding the first nut in the first groove of the first protective cap, and screwing the first nut.
According to the assembling method of the multiple-loss-prevention grounding device for the power transmission line tower, the second protective cap and the second sealing ring are sequentially sleeved on the bolt screw, the head of the bolt is embedded in the fourth groove of the second protective cap, and the second sealing ring is embedded in the fifth groove of the second protective cap; then, sequentially sleeving the grounding nose of the grounding downlead, the grounding end of the power equipment and a second nut on the bolt screw, and screwing the second nut; then, sequentially sleeving a first sealing ring and a first protective cap on the bolt screw, and embedding a second nut in a second groove of the first protective cap and embedding the first sealing ring in a third groove of the first protective cap; and finally, sleeving the first nut on the bolt screw, embedding the first nut in the first groove of the first protective cap, and screwing the first nut. The assembly method enables the grounding device to be fastened and detached simply and conveniently.
Drawings
FIG. 1 is a schematic view of a bolt according to one embodiment;
FIG. 2 is a schematic diagram of a first nut in one embodiment;
FIG. 3 is a schematic structural view of a first helmet in accordance with a first embodiment;
FIG. 4 is a schematic structural view of a first protective cap in a second embodiment;
FIG. 5 is a schematic diagram of a first seal ring according to one embodiment;
FIG. 6 is a schematic structural view of a second helmet in the first embodiment;
FIG. 7 is a schematic structural view of a second protective cap in the second embodiment;
FIG. 8 is a schematic view of the construction of the sleeve in one embodiment;
FIG. 9 is a schematic view of the structure of the operating lever in one embodiment;
FIG. 10 is a schematic view of an embodiment of an assembly tool after assembly;
fig. 11 is an assembly schematic diagram of the multiple damage prevention type grounding device of the power transmission line tower in one embodiment;
fig. 12 is a schematic diagram of the power transmission line tower multi-loss prevention type grounding device in one embodiment after being assembled.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
Referring to fig. 1 to 3, the multiple damage prevention type grounding device for the power transmission line tower comprises a bolt 10, a first nut 20 and a first protective cap 30. The bolt 10 comprises a head 11 and a screw 12, wherein a plurality of first clamping grooves 111 are formed in the outer peripheral surface of the head 11 at equal intervals along the circumferential direction, and threads 121 are formed in the outer peripheral surface of the screw 12; a plurality of second clamping grooves 21 are arranged on the outer peripheral surface of the first nut 20 at equal intervals along the circumferential direction, and a first through screw hole 22 matched with the screw 12 is arranged in the first nut; the first protective cap 30 is provided with a second through screw hole 31 inside to be matched with the screw 12, the first protective cap 30 comprises a first end face 32 far away from the bolt head 11 and a second end face 33 close to the bolt head 11 during installation, the first end face 32 is provided with a first groove 34 matched with at least part of the first nut 20, and at least part of the first nut 20 is embedded in the first groove 34.
Specifically, referring to fig. 1, the bolt 10 may be a cross bolt with a circular cap, and includes a head 11 and a screw 12, where the head 11 includes a first cylinder, a first arc-shaped protrusion is formed on the top of the first cylinder, and four first slots 111 are formed on the outer circumferential surface of the first cylinder at equal intervals along the circumferential direction, that is, the four first slots 111 are respectively located in the vertical crossing direction and spaced apart from each other by 90 °, and the four first slots 111 penetrate through the first cylinder and the first arc-shaped protrusion; the screw 12 comprises a second cylinder, a standard thread 121 is arranged on the outer circumference of the second cylinder, and the length of the thread 121 is less than or equal to the total length of the screw 12.
The first nut 20 may be a cross nut with a round cap, and has a structure consistent with the bolt head 11, except that a first through screw hole 22 matched with the screw 12 is further provided inside the first nut for placing the screw 12. Specifically, referring to fig. 2, the first nut 20 includes a third cylinder, a second arc-shaped protrusion is formed on the top of the third cylinder, four second clamping grooves 21 are formed on the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction, that is, the four second clamping grooves 21 are respectively located in the vertical crossing direction and are spaced by 90 ° with each other, the four second clamping grooves 21 penetrate through the third cylinder and the second arc-shaped protrusion, and a first through screw hole 22 matched with the screw 12 is formed inside the third cylinder and the second arc-shaped protrusion.
The first helmet 30 is mainly used for sealing between a ground terminal of the power equipment, the screw 12, and the first nut 20, and has a certain camouflage function, so when designing the same, a flexible sealing material having an anti-aging function, such as rubber, silicon rubber, etc., is mainly used, and the structural design is performed according to the shape of the first nut 20. Specifically, referring to fig. 3, when the first nut 20 adopts the structure shown in fig. 2, a first groove 34 matched with the third cylinder of the first nut 20 may be formed on the first end surface 32 of the first protective cap 30, that is, the depth of the first groove 34 is the same as the height of the third cylinder, and the diameter is slightly larger than the outer diameter of the third cylinder, so that the third cylinder of the first nut 20 is embedded in the first groove 34 of the first protective cap 30. And the inside of the first protective cap 30 is formed with the second through screw hole 31 the same as the first through screw hole 22, and simultaneously the shape of the first protective cap 30 is set to be dish-shaped, and the first nut 20 and the first protective cap 30 are integrally in a hemispherical structure after being embedded and combined, that is, when the third cylinder of the first nut 20 is completely embedded in the first groove 34, the first nut 20 and the first protective cap 30 are smoothly connected to form the hemispherical structure.
When assembling, firstly, the grounding nose of the grounding downlead, the grounding end of the power equipment and the first protective cap 30 are sleeved on the screw 12 in sequence, the second end face 33 of the first protective cap 30 faces the bolt head 11, then the first nut 20 is sleeved on the screw 12 and is embedded in the first groove 34 of the first protective cap 30, and a special assembling tool is used for screwing the first nut.
In this embodiment, through the special design to bolt and nut draw-in groove, make the personnel of stealing can't dismantle it through universal spanner, thereby the theftproof effect has been improved to a certain extent, first helmet can prevent to a certain extent simultaneously that the bolt from droing, can prevent the rainwater simultaneously, dew etc. are to the corruption of nut and bolt screw rod, thereby earthing device's anti-drop has effectively been improved, loss prevention and anticorrosive effect, and first helmet has certain camouflage effect moreover, also can play the theftproof effect to a certain extent.
It should be noted that, in practical application, the outer surface of the first protective cap 30 may be subjected to smoothing treatment to make it have strong hydrophobicity, so that water is not accumulated even in severe weather, thereby further improving the anticorrosion effect, and meanwhile, the inner surface of the first protective cap 30 is subjected to rough treatment to make it closely adhere to the screw 12, thereby further improving the sealing effect. In addition, the bolt 10 can be galvanized, and after the assembly is completed, a layer of hydrophobic molecular paint is coated on the outer surface of the grounding down lead joint, so that the anti-corrosion effect is further improved.
In one embodiment, the multiple damage-prevention grounding device for the power transmission line tower further comprises a second nut, wherein a plurality of third clamping grooves are formed in the outer peripheral surface of the second nut at equal intervals along the circumferential direction, and a third through screw hole matched with the screw 12 is formed in the second nut; the second end face 33 of the first protective cap 30 is provided with a second groove 35 which is matched with at least part of the second nut, a space is arranged between the first groove 34 and the second groove 35, and at least part of the second nut is embedded in the second groove 35.
Specifically, two nuts, namely, a first nut 20 and a second nut, may be used for fastening, wherein the first nut 20 is embedded on the first end face 32 of the first protective cap 30, i.e., the end far away from the bolt head 11, and the second nut is embedded on the second end face 33 of the first protective cap 30, i.e., the end close to the bolt head 11, so as to further improve the fastening of the ground down conductor to the ground end of the power equipment. Specifically, referring to fig. 3 and 4, a first groove 34 may be formed on the first end surface 32 of the first protective cap 30 to be engaged with the first nut 20 such that at least a portion of the first nut 20 is fitted into the first groove 34, while a second groove 35 may be formed on the second end surface 33 of the first protective cap 30 to be engaged with the second nut such that the entire second nut is just fitted into the second groove 35.
When assembling, firstly, the grounding nose of the grounding downlead, the grounding end of the power equipment and the second nut are sequentially sleeved on the screw 12, the second nut is screwed down by using a special assembling tool, then the first protective cap 30 is sleeved on the screw 12, the second end face 33 of the first protective cap 30 faces the bolt head 11, the second nut is completely embedded in the second groove 35 of the first protective cap 30, then the first nut 20 is sleeved on the screw 12 and is embedded in the first groove 34 of the first protective cap 30, and the first nut is screwed down by using the special assembling tool.
In this embodiment, fasten the ground connection downlead through two nuts, not only effectively improved the fastening nature that ground connection downlead and power equipment earthing terminal are connected, can reach reserve effect moreover, the second nut is by the complete cladding in first helmet simultaneously, can effectively prevent rainwater, dew etc. to the corruption of second nut and bolt screw rod, further improved earthing device's loss prevention, anticorrosive effect, reached fine camouflage effect moreover, reduced stolen risk.
It should be noted that the second nut and the first nut 20 may have the same structure and material, that is, the first nut 20 and the second nut are the same type of nut, so as to reduce the development cost.
In one embodiment, the multiple damage prevention type grounding device for the power transmission line tower further comprises: the second end face 33 of the first protective cap 30 is provided with a third groove 36 matched with at least part of the first sealing ring 40, intervals are arranged between the third groove 36 and the first groove 34 and between the third groove 36 and the second groove 35, and at least part of the first sealing ring 40 is embedded in the third groove 36.
Specifically, the first sealing ring 40 is used in cooperation with the second nut, and is used for improving the sealing performance and the fastening performance among the grounding end of the power equipment, the screw and the second nut, the first sealing ring 40 can be a circular sealing ring, mainly made of rubber, silicon rubber and other flexible sealing materials with an anti-aging function, and can also be a spiral sealing ring, mainly made of carbon steel, stainless steel and other materials. Referring to fig. 4 and 5, a third groove 36 matched with the first sealing ring 40 may be formed on the second end surface 33 of the first protective cap 30, so that the entire first sealing ring 40 is just embedded in the third groove 36 and slightly higher than the third groove 36, and thus, when the first sealing ring 40 has a certain contractibility, the first sealing ring can contract to a certain extent under the action of pressure, thereby achieving a good fastening effect and a good sealing effect.
In this embodiment, adopt first sealing washer cooperation second nut to fasten, not only can effectively improve leakproofness and the fastening nature between power equipment earthing terminal, screw rod and the second nut, first sealing washer inlays the dress in first helmet moreover, can realize the total coverage to the screw rod, effectively prevents the corruption to the bolt screw rod such as rainwater, dew, has further improved earthing device's loss prevention, anticorrosive effect.
In one embodiment, the multiple damage prevention type grounding device for the power transmission line tower further comprises: the second protective cap 50 is provided with a fourth through screw hole 51 matched with the screw 12, the second protective cap 50 comprises a third end face 52 close to the head of the bolt and a fourth end face 53 far away from the head of the bolt during installation, a fourth groove 54 matched with at least part of the head of the bolt 11 is arranged on the third end face 52, and at least part of the head of the bolt 11 is embedded in the fourth groove 54.
The second protective cap 50 is mainly used for sealing between the grounding nose of the grounding down conductor and the bolt head 11, and has a certain camouflage effect, so when designing the second protective cap, flexible sealing materials with an anti-aging function, such as rubber and silicon rubber, are mainly used, and meanwhile, structural design is performed according to the shape of the bolt head 11. Specifically, referring to fig. 6, when the bolt head 11 adopts the structure shown in fig. 1, a fourth groove 54 matched with the first cylinder of the bolt head 11 may be formed on the third end surface 52 of the second protective cap 50, that is, the depth of the fourth groove 54 is the same as the height of the first cylinder, and the diameter is slightly larger than the outer diameter of the first cylinder, so that the first cylinder of the bolt head 11 is embedded in the fourth groove 54 of the second protective cap 50, and a fourth through screw hole 51 identical to the first through screw hole 22 is formed inside the second protective cap 50, while the shape of the second protective cap 50 is set to be dish-shaped, and the bolt head 11 and the second protective cap 50 are integrally formed into a hemispherical structure after being embedded and combined, that is, when the first cylinder of the bolt head 11 is completely embedded in the fourth groove 54, the bolt head 11 and the second protective cap 50 are smoothly connected, to form a hemispherical structure.
During assembly, the second protective cap 50 is firstly sleeved on the screw 12, the third end face 52 of the second protective cap faces the screw head 11, meanwhile, the screw head 11 is ensured to be embedded in the fourth groove 54 of the second protective cap 50, then, the grounding nose of the grounding down conductor, the grounding end of the power equipment and the second nut are sleeved on the screw 12 and are screwed down by using a special assembly tool, then, the first protective cap 30 is sleeved on the screw 12, the second end face 33 of the first protective cap 30 faces the screw head 11, the second nut is completely embedded in the second groove 35 of the first protective cap 30, and then, the first nut 20 is sleeved on the screw 12 and is embedded in the first groove 34 of the first protective cap 30 and is screwed down by using the special assembly tool.
In this embodiment, first helmet can prevent to a certain extent rainwater, dew etc. from the corruption to nut and bolt screw, and the second helmet can prevent to a certain extent rainwater, dew etc. from the corruption to bolt head and bolt screw, has effectively improved earthing device's loss prevention, anticorrosive effect, and first helmet and second helmet all have certain camouflage effect moreover, also can play the theftproof effect to a certain extent.
It should be noted that, in practical application, the outer surface of the second protective cap 50 may be subjected to smoothing treatment to make it have strong hydrophobicity, so that water is not accumulated even in severe weather, thereby further improving the anticorrosion effect, and meanwhile, the inner surface of the second protective cap 50 is subjected to rough treatment to make it closely adhere to the screw 12, thereby further improving the sealing effect. In addition, the bolt 10 can be galvanized, and after the assembly is completed, a layer of hydrophobic molecular paint is coated on the outer surface of the grounding down lead joint, so that the anti-corrosion effect is further improved.
In one embodiment, the multiple-damage-prevention grounding device for the power transmission line tower further includes a second sealing ring, a fifth groove 55 is formed on the fourth end surface 53 of the second protective cap 50, the fifth groove 55 is matched with at least part of the second sealing ring, a gap is formed between the fifth groove 55 and the fourth groove 54, and at least part of the second sealing ring is embedded in the fifth groove 55.
Specifically, the second sealing ring is matched with the bolt head for use and used for improving the sealing performance and the fastening performance among the grounding nose, the screw rod and the bolt head of the grounding down lead, the second sealing ring can be a circular sealing ring, and mainly adopts rubber, silicon rubber and other flexible sealing materials with an anti-aging function, and can also be a spiral sealing ring which mainly adopts carbon steel, stainless steel and other materials. Referring to fig. 7, a fifth groove 55 matched with the second sealing ring can be formed on the fourth end surface 53 of the second protective cap 50, so that the whole second sealing ring is just embedded in the fifth groove 55 and slightly higher than the fifth groove 55, and thus, when the second sealing ring is assembled, the second sealing ring has certain contractibility, and can contract to a certain degree under the action of pressure, so that a good fastening effect and a good sealing effect can be achieved.
In this embodiment, adopt second sealing washer cooperation bolt head to fasten, not only can effectively improve leakproofness and the fastening nature between ground connection downlead ground connection nose, screw rod and the bolt head, the second sealing washer inlays the dress in the second helmet moreover, can realize the full coverage to the screw rod, effectively prevents the corruption to the bolt screw rod such as rainwater, dew, has further improved earthing device's loss prevention, anticorrosive effect.
It should be noted that, the second seal ring and the first seal ring 40 may have the same structure and material, that is, the second seal ring and the first seal ring 40 are nuts of the same type, so as to reduce the development cost.
In addition, the number of the first card slot 111, the second card slot 21, and the third card slot is four, but in other embodiments of the present application, two, three, five, or more card slots may be used, and the number is not limited herein. Moreover, the number of the first card slot 111, the second card slot 21 and the third card slot is preferably the same, so that the same assembling tool can be used for assembling and disassembling the card, the development cost of the assembling tool is reduced, and different numbers can be adopted, so that the difficulty of stealing is increased, and the anti-theft effect is further improved.
In conclusion, the multiple-protection grounding device for the power transmission line tower has the functions of theft prevention, loss prevention and corrosion prevention, is reliable in connection, strong in protection effect, simple in structure, low in cost and good in applicability, and has important practical engineering significance and batch popularization and application value.
Further, the application also provides an assembling tool for the multiple damage-prevention grounding device of the power transmission line tower, the assembling tool is used for assembling the multiple damage-prevention grounding device of the power transmission line tower, as shown in fig. 8-10, the assembling tool comprises a sleeve 91 and an operating rod 92, one end of the sleeve 91 is provided with a plurality of clamping teeth 911, the plurality of clamping teeth 911 are matched with the plurality of first clamping grooves, the plurality of second clamping grooves and the plurality of third clamping grooves, and the outer peripheral surface of the sleeve 91 is provided with a plurality of through holes 912; the operation lever 92 is penetratingly provided in the plurality of through holes 912.
Specifically, when the structures of the bolt head, the first nut and the second nut are the same, referring to fig. 8, a plurality of latches 911 matched with a plurality of first slots, a plurality of second slots or a plurality of third slots may be disposed at one end of the sleeve 91 to fasten and dismount the bolt, the first nut and the second nut, and an arc-shaped cover is disposed at the other end of the sleeve 91 to improve the safety and the aesthetic property of the assembly tool; when the first nut and the second nut have the same structure and are different from the bolt head, a plurality of latches 911 matched with a plurality of first slots can be arranged at one end of the sleeve 91 to fasten and dismount the bolt, a plurality of latches matched with a plurality of second slots can be arranged at the other end of the sleeve 91 to fasten and dismount the first nut and the second nut, and the cylinder shape of the sleeve 91 can be adjusted according to the outer diameter of the first cylinder of the bolt head and the outer diameter of the third cylinder of the first nut.
The wall of the sleeve 91 is further provided with a plurality of through holes 912 for placing the operating rod 92, as shown in fig. 9, the operating rod 92 may be an integrally formed cylindrical bent tube to achieve a labor-saving effect, and correspondingly, the wall of the sleeve 91 is provided with two through holes 912, as shown in fig. 10, the operating rod 92 sequentially passes through the two through holes 912 to achieve assembly of the assembly tool. The assembly tool not only can realize quick fastening and disassembly of the grounding device, but also has simple structure and convenient use, adopts a sleeve structure, effectively reduces the volume and the quality of the whole assembly tool, and is convenient for operators to carry about.
In one embodiment, referring to fig. 9, the end of the operating rod 92 is further provided with threads 921 to improve the friction between the operator and the operating rod and to improve the safety during fastening and dismounting.
Still further, the application also provides an assembly method of the transmission line tower multiple anti-loss grounding device, which is used for assembling the transmission line tower multiple anti-loss grounding device, and the assembly method comprises the following steps: sequentially sleeving a second protective cap and a second sealing ring on the bolt screw, embedding the head of the bolt in a fourth groove of the second protective cap, and embedding the second sealing ring in a fifth groove of the second protective cap; sequentially sleeving a grounding nose of the grounding downlead, a grounding end of the power equipment and a second nut on the bolt screw, and screwing the second nut; sequentially sleeving a first sealing ring and a first protective cap on the bolt screw, embedding a second nut in a second groove of the first protective cap, and embedding the first sealing ring in a third groove of the first protective cap; and sleeving the first nut on the bolt screw, embedding the first nut in the first groove of the first protective cap, and screwing the first nut.
Specifically, referring to fig. 11, during assembly, the second protective cap 50 is first sleeved on the screw of the bolt 10 with the third end facing the head of the bolt, while ensuring that the head of the bolt is embedded in the fourth groove of the second protective cap 50, and then the second sealing ring 70 is sleeved on the screw of the bolt and embedded in the fifth groove of the second protective cap 50. Next, the grounding lug 81 of the grounding down conductor 80, the grounding end of the electric power equipment, and the second nut 60 are fitted to the bolt screw in this order, and are tightened using the above-described assembling tool. Next, the first seal ring 40 and the first helmet 30 are sequentially sleeved on the bolt screw, and the second end face of the first helmet 30 faces the bolt head, and the second nut 60 is completely embedded in the second groove of the first helmet 30, and the first seal ring 40 is completely embedded in the third groove of the first helmet 30. Next, the first nut 20 is fitted around the bolt screw and fitted into the first recess of the first helmet 30, and is tightened using the above-mentioned fitting tool, so that the power equipment is connected to the ground grid through the ground terminal of the power equipment, the ground nose 81 of the ground down-lead 80, and the ground wire 82 of the ground down-lead 80. The assembly method enables the grounding device to be conveniently mounted and dismounted.
It should be noted that the place where the grounding down conductor 80 enters may be coated with a waterproof paint or asphalt waterproof layer to prevent the problem of oxygen concentration corrosion of the grounding down conductor near the bottom surface and prolong the service life of the grounding down conductor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a multiple loss prevention type earthing device of transmission line shaft tower which characterized in that includes:
the bolt comprises a head and a screw rod, the head of the bolt comprises a first cylinder, a first arc-shaped bulge is formed at the top of the first cylinder, a plurality of first clamping grooves are formed in the outer circumferential surface of the first cylinder at equal intervals along the circumferential direction and penetrate through the first cylinder and the first arc-shaped bulge, the screw rod comprises a second cylinder, and threads are formed in the outer circumferential surface of the second cylinder;
the first nut comprises a third cylinder, a second arc-shaped bulge is formed at the top of the third cylinder, a plurality of second clamping grooves are formed in the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction and penetrate through the third cylinder and the second arc-shaped bulge, and first through screw holes matched with the screw rods are formed in the third cylinder and the second arc-shaped bulge;
the first nut comprises a first nut body and a first nut, a screw rod is arranged in the first nut body, a first through screw hole matched with the screw rod is formed in the first nut body, the first nut body comprises a first end face far away from the head of the bolt and a second end face close to the head of the bolt during installation, a first groove matched with a third cylinder body of the first nut is formed in the first end face, the depth of the first groove is the same as the height of the third cylinder body of the first nut, and the third cylinder body of the first nut is embedded in the first groove.
2. The multiple loss prevention type grounding device for the transmission line tower according to claim 1, wherein the grounding device further comprises: the outer peripheral surface of the second nut is provided with a plurality of third clamping grooves at equal intervals along the circumferential direction, and a third through screw hole matched with the screw rod is formed in the second nut;
and a second groove matched with at least part of the second nut is arranged on the second end face of the first protective cap, a gap is reserved between the first groove and the second groove, and at least part of the second nut is embedded in the second groove.
3. The multiple loss prevention type grounding device for the transmission line tower according to claim 2, wherein the grounding device further comprises: the second end face of the first protective cap is provided with a third groove matched with at least part of the first sealing ring, intervals are arranged between the third groove and the first groove and between the second groove, and at least part of the first sealing ring is embedded in the third groove.
4. The multiple damage-prevention grounding device for the power transmission line tower as claimed in claim 2, wherein the first protective cap is disc-shaped, and the first nut and the first protective cap are combined in an embedded manner to form a hemispherical structure.
5. The multiple damage prevention type grounding device for the transmission line tower according to any one of claims 1 to 4, wherein the grounding device further comprises: the second protective cap is provided with a fourth through screw hole matched with the screw rod, the second protective cap is close to the third end face of the bolt head and far away from the fourth end face of the bolt head during installation, a fourth groove matched with the first cylinder of the bolt head is arranged on the third end face, and the first cylinder of the bolt head is embedded in the fourth groove.
6. The multiple loss prevention type grounding device for transmission line towers according to claim 5, wherein the grounding device further comprises: and a fifth groove matched with at least part of the second sealing ring is arranged on the fourth end face of the second protective cap, a gap is reserved between the fifth groove and the fourth groove, and at least part of the second sealing ring is embedded in the fifth groove.
7. The multiple damage-prevention grounding device for the power transmission line tower as claimed in claim 5, wherein the second protective cap is disc-shaped, and the bolt head and the second protective cap are combined in an embedded manner to form a hemispherical structure.
8. The multiple damage-prevention grounding device for the transmission line tower as claimed in claim 5, wherein the first protective cap and the second protective cap are made of flexible sealing material.
9. An assembling tool for a power transmission line tower multiple-loss-prevention grounding device is used for assembling the power transmission line tower multiple-loss-prevention grounding device, and the power transmission line tower multiple-loss-prevention grounding device comprises a bolt, a first nut, a first protective cap and a second nut; the bolt comprises a head and a screw rod, the head of the bolt comprises a first cylinder, a first arc-shaped bulge is formed at the top of the first cylinder, a plurality of first clamping grooves are formed in the outer circumferential surface of the first cylinder at equal intervals along the circumferential direction and penetrate through the first cylinder and the first arc-shaped bulge, the screw rod comprises a second cylinder, and threads are formed in the outer circumferential surface of the second cylinder; the first nut comprises a third cylinder, a second arc-shaped bulge is formed at the top of the third cylinder, a plurality of second clamping grooves are formed in the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction and penetrate through the third cylinder and the second arc-shaped bulge, and first through screw holes matched with the screw rods are formed in the third cylinder and the second arc-shaped bulge; a second through screw hole matched with the screw rod is formed in the first protective cap, the first protective cap comprises a first end face far away from the head of the bolt and a second end face close to the head of the bolt during installation, a first groove matched with a third cylinder of the first nut is formed in the first end face, the depth of the first groove is the same as the height of the third cylinder of the first nut, and the third cylinder of the first nut is embedded in the first groove; be provided with a plurality of third draw-in grooves along circumferencial direction equidistant on the outer peripheral face of second nut, and inside be equipped with screw rod matched with third link up the screw, its characterized in that, erecting tool includes:
the clamping device comprises a sleeve, a plurality of clamping teeth and a plurality of clamping grooves, wherein a plurality of first clamping grooves, a plurality of second clamping grooves and a plurality of third clamping grooves are formed in one end of the sleeve and matched with the plurality of clamping teeth;
the operating rod is a bending pipe and penetrates through the through holes.
10. The assembling method is used for assembling the transmission line tower multiple damage-prevention grounding device, and the transmission line tower multiple damage-prevention grounding device comprises a bolt, a first nut, a first protective cap, a second nut, a first sealing ring, a second protective cap and a second sealing ring; the bolt comprises a head and a screw rod, the head of the bolt comprises a first cylinder, a first arc-shaped bulge is formed at the top of the first cylinder, a plurality of first clamping grooves are formed in the outer circumferential surface of the first cylinder at equal intervals along the circumferential direction and penetrate through the first cylinder and the first arc-shaped bulge, the screw rod comprises a second cylinder, and threads are formed in the outer circumferential surface of the second cylinder; the first nut comprises a third cylinder, a second arc-shaped bulge is formed at the top of the third cylinder, a plurality of second clamping grooves are formed in the outer circumferential surface of the third cylinder at equal intervals along the circumferential direction and penetrate through the third cylinder and the second arc-shaped bulge, and first through screw holes matched with the screw rods are formed in the third cylinder and the second arc-shaped bulge; a second through screw hole matched with the screw rod is formed in the first protective cap, the first protective cap comprises a first end face far away from the head of the bolt and a second end face close to the head of the bolt during installation, a first groove matched with a third cylinder of the first nut is formed in the first end face, the depth of the first groove is the same as the height of the third cylinder of the first nut, and the third cylinder of the first nut is embedded in the first groove; the second end face of the first protective cap is provided with a second groove matched with at least part of the second nut, the second end face of the first protective cap is provided with a third groove matched with at least part of the first sealing ring, and a third through screw hole matched with the screw rod is arranged in the second end face of the first protective cap, and the assembling method is characterized by comprising the following steps:
sleeving a second protective cap and a second sealing ring on a bolt screw in sequence, and enabling the head of the bolt to be embedded in a fourth groove of the second protective cap and the second sealing ring to be embedded in a fifth groove of the second protective cap;
sleeving a grounding nose of the grounding downlead, a grounding end of the power equipment and a second nut on the bolt screw in sequence, and screwing the second nut;
sequentially sleeving a first sealing ring and a first protective cap on the bolt screw, and enabling the second nut to be embedded in a second groove of the first protective cap and the first sealing ring to be embedded in a third groove of the first protective cap;
and sleeving a first nut on the bolt screw, embedding the first nut in the first groove of the first protective cap, and screwing the first nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010186863.8A CN111446554B (en) | 2020-03-17 | 2020-03-17 | Multi-loss-prevention grounding device for power transmission line tower, assembling tool and assembling method |
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| CN202010186863.8A CN111446554B (en) | 2020-03-17 | 2020-03-17 | Multi-loss-prevention grounding device for power transmission line tower, assembling tool and assembling method |
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| CN111446554B true CN111446554B (en) | 2021-12-03 |
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| US3218906A (en) * | 1962-06-18 | 1965-11-23 | James N Dupree | Captive screw and washer assembly |
| US6039408A (en) * | 1997-11-03 | 2000-03-21 | Alvarez; William | Break-away lug nut positioner |
| CN202381507U (en) * | 2011-11-18 | 2012-08-15 | 河南省电力公司安阳供电公司 | Anti-theft bolt for power tower |
| CN205423475U (en) * | 2016-03-01 | 2016-08-03 | 绍兴山耐高压紧固件有限公司 | Sealed indentation bolt |
| CN208634193U (en) * | 2018-08-22 | 2019-03-22 | 董尊久 | A kind of Combined locknut |
| CN110797672A (en) * | 2019-11-12 | 2020-02-14 | 国家电网有限公司 | Loss-prevention grounding device of power transmission and transformation equipment and assembling tool and method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3218906A (en) * | 1962-06-18 | 1965-11-23 | James N Dupree | Captive screw and washer assembly |
| US6039408A (en) * | 1997-11-03 | 2000-03-21 | Alvarez; William | Break-away lug nut positioner |
| CN202381507U (en) * | 2011-11-18 | 2012-08-15 | 河南省电力公司安阳供电公司 | Anti-theft bolt for power tower |
| CN205423475U (en) * | 2016-03-01 | 2016-08-03 | 绍兴山耐高压紧固件有限公司 | Sealed indentation bolt |
| CN208634193U (en) * | 2018-08-22 | 2019-03-22 | 董尊久 | A kind of Combined locknut |
| CN110797672A (en) * | 2019-11-12 | 2020-02-14 | 国家电网有限公司 | Loss-prevention grounding device of power transmission and transformation equipment and assembling tool and method thereof |
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|---|---|
| CN111446554A (en) | 2020-07-24 |
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