CN109216950B - Electric power engineering earthing device - Google Patents
Electric power engineering earthing device Download PDFInfo
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- CN109216950B CN109216950B CN201811114615.1A CN201811114615A CN109216950B CN 109216950 B CN109216950 B CN 109216950B CN 201811114615 A CN201811114615 A CN 201811114615A CN 109216950 B CN109216950 B CN 109216950B
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- cap
- pressing cap
- pressing
- lead wire
- nut
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- 238000003825 pressing Methods 0.000 claims abstract description 155
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 126
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 11
- 238000004870 electrical engineering Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000010962 carbon steel Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 210000004907 gland Anatomy 0.000 claims 1
- 238000000034 method Methods 0.000 description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 238000001125 extrusion Methods 0.000 description 11
- 238000000926 separation method Methods 0.000 description 9
- 238000004873 anchoring Methods 0.000 description 7
- 230000006378 damage Effects 0.000 description 7
- 210000000080 chela (arthropods) Anatomy 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 208000014674 injury Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- H01R4/304—Clamped connections, spring connections utilising a screw or nut clamping member having means for improving contact
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
-
- 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
-
- 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
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- Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
Abstract
The invention discloses an electric power engineering grounding device, which comprises a ground anchor rod and a wiring part, wherein the wiring part comprises a wiring board and a wire part, the wire part comprises a stud, a nut and a lead wire, and the grounding device also comprises a pressing cap; the pressing cap is sleeved on the stud, and the pressing cap is positioned between the connector lug and the nut; a plurality of strip-shaped axial grooves are further formed in the outer side of the pressing cap, one end of each axial groove is connected with one end of the pressing cap, and the other end of each axial groove is connected with the other end of the pressing cap; the plurality of axial grooves are annularly arranged on the outer side surface of the pressing cap; the pressing cap is sleeved with the lantern ring; one end of the lantern ring close to the screw cap is also provided with an annular blocking edge, and the blocking edge forms an annular step surface on the outer side surface of the lantern ring; the terminal surface of nut contacts with the terminal surface of pressing the cap, and the terminal surface of lantern ring is located the outside of nut terminal surface. The grounding device has reliable lead wire connection and conductive performance at the connection position of the lead wire is easy to ensure.
Description
Technical Field
The invention relates to the technical field of electric power engineering, in particular to an electric power engineering grounding device.
Background
In the use and maintenance process of the existing power system and rear-end electric equipment, a grounding device is often required to be additionally arranged to realize system grounding connection and equipment grounding electrical connection. Such as: in the cable maintenance process, in order to guarantee the personal safety of maintenance personnel, grounding of a corresponding maintenance circuit is required before maintenance, so that electric shock injury to the maintenance personnel due to power transmission errors is avoided; when the electrical appliance is inspected and overhauled in the using process, the condition of temporary grounding also exists.
For the corresponding grounding device, in the prior art, a temporary grounding anchor may be pre-buried near the grounding point, and for this occasion, an electrical connection line is used to connect the grounding anchor with a corresponding cable or equipment. However, in most cases, especially for power line grounding, a pre-buried grounding anchor is not generally provided on the site, and under such a situation, a temporary anchor rod is generally adopted to be anchored into the ground, and the corresponding to-be-repaired line is electrically connected with the ground through a lead wire.
Further optimizing the structural design of the grounding device to optimize the conductivity of the grounding device is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention provides a grounding device for electric power engineering, which aims to solve the problem that the structural design of the grounding device is further optimized to optimize the conductivity of the grounding device, and the problem needs to be solved urgently by technical personnel in the field.
An electric power engineering grounding device comprises a ground anchor rod and a wiring part arranged on the ground anchor rod, wherein the wiring part comprises a wiring board and a wiring part, the wiring part comprises a stud, a nut and a lead wire, the wiring board is electrically connected with the ground anchor rod, one end of the stud is welded on the wiring board, the nut is in threaded connection with the stud, the wiring head of the lead wire is clamped between the wiring board and the nut, the electric power engineering grounding device also comprises a pressing cap, the pressing cap is made of copper or aluminum, the stud and the nut are made of carbon steel, and the pressing cap is annular;
the pressing cap is sleeved on the stud, and the pressing cap is positioned between the connector lug and the nut;
a plurality of strip-shaped axial grooves are further formed in the outer side of the pressing cap, one end of each axial groove is connected with one end of the pressing cap, and the other end of each axial groove is connected with the other end of the pressing cap;
the plurality of axial grooves are annularly arranged on the outer side surface of the pressing cap;
the sleeve ring is sleeved on the pressing cap;
one end of the lantern ring close to the screw cap is also provided with an annular blocking edge, and the blocking edge forms an annular step surface on the outer side surface of the lantern ring;
the terminal surface of nut contacts with the terminal surface of pressing the cap, and the terminal surface of lantern ring is located the outside of nut terminal surface.
Conventionally, an earth anchor is generally used for a temporarily installed power grounding device, and a lead wire is used as an electrical connection wire between the earth anchor and a device or apparatus to be grounded corresponding to a line to be repaired. In consideration of convenience of the ground anchor rod and the ground, the ground anchor rod and the lead wire are generally arranged in a detachable connection manner: before the ground anchor rod is anchored into the ground, the lead wire is separated from the ground anchor rod so as to facilitate the anchoring of the ground anchor rod and avoid the damage to the lead wire in the anchoring process of the ground anchor rod; the separation of the lead wire and the ground anchor rod is completed before the ground anchor rod is pulled out, so that the ground anchor rod is conveniently pulled out, and the lead wire is prevented from being damaged in the pulling-out process of the ground anchor rod.
However, in the prior art, a connection method between the wiring board and the lead wire is generally adopted, in which a wire holder is disposed on the wiring board, the wire holder includes a rectangular tube-shaped wire inserting cylinder, the wire inserting cylinder is fixedly connected with the wiring board, one or more wire pressing screws are connected to the wire inserting cylinder, and after the terminal of the lead wire is inserted into the wire inserting cylinder, the lead wire is fixedly connected with the wire holder by applying pressure to the lead wire through the wire pressing screws. In the above connection manner, since the diameter of the wire pressing screw should not be set too large, the area of positive pressure between the lead wire and the wire inserting cylinder and between the lead wire and the wire pressing screw is limited by the diameter of the wire pressing screw, so that the connection reliability of the lead wire and the wire holder is poor, and the resistance value of the connection position of the lead wire on the grounding device is large, which is not only unfavorable for the use safety of the grounding device, but also unfavorable for the grounding performance of the grounding device.
In this scheme, the connecting portion that is used for being connected with the lead wire electricity on the wiring board is promptly for the wire portion on the wiring board, if through the tip at the lead wire, the wiring end coiling a lantern ring that encircles the double-screw bolt promptly, directly with the tip bifurcation of lead wire and make the double-screw bolt be located the fork mouth of lead wire, directly insert the tip of lead wire in the clearance of pressing cap and wiring board, the cap is pressed in the position on the double-screw bolt axis in the rethread nut adjustment, can realize the electricity of lead wire and wiring board through pressing cap and wiring board and be connected.
The terminal is arranged to clamp the terminal of the lead wire between the nut and the terminal block in the process of the nut approaching the terminal block by rotating the nut. Simultaneously, set up to still including pressing the cap, press the cap cover to establish on the double-screw bolt, press the cap to be located between connector lug and the nut, set up the material that sets up to pressing the cap simultaneously for copper or aluminium, the material of double-screw bolt, nut is the carbon steel, like this, presses the in-process of cap at the nut extrusion, can make to press the cap to produce plastic deformation in order to increase and press cap and lead wire, press cap and double-screw bolt, press the area of contact between cap and the nut in order to improve the electric conductive property between lead wire and the wiring board.
Because the cap is pressed to take place to warp the back under the effect of nut and press the cap can bond on the double-screw bolt or form the close-fitting relation with the double-screw bolt, above bonding and close-fitting relation influence the removal of connector lug and double-screw bolt relation of being connected, so set up to still including setting up the many axial grooves on pressing the cap outside, when above axial groove is used for connector lug and double-screw bolt separation, through tools such as pincers worker flat shovel, pincers worker crow bar, the destruction is pressed the cap and is made it become non-closed ring and convenient will be pressed the cap and remove on by the double-screw bolt. In this scheme, set up to the axial groove be a plurality ofly, and the annular distribution on pressing the cap, can make operating personnel can destroy by the angle of convenient operation and press the cap or convenient will press the cap to destroy and be the polylith.
As mentioned above, this scheme need press the cap so that it produces plastic deformation and optimizes the electrical connection performance of lead wire and ground stock when using through the nut extrusion, simultaneously including the axial slot on the pressure cap, press the whole ring structure of cap to suffer destruction and influence the electrical connection performance of lead wire and double-screw bolt for avoiding the nut to press in-process pressure cap in the extrusion, in this scheme, set up to still including the lantern ring, above lantern ring is the hoop of cover locating on the pressure cap outside for press the cap radial deformation to provide the restraint, press the intact of the whole ring structure of cap in-process pressure cap in order to keep the nut extrusion.
As described above, since the connection relationship between the lead wire and the stud is removed at last, the pressing cap needs to be damaged, and the tight fit relationship is formed between the collar and the pressing cap after the pressing cap is deformed, in this scheme, an annular stopper edge is further arranged at one end of the collar close to the nut, and an annular step surface is formed on the outer side surface of the collar by the stopper edge. Thus, before the pressing cap is broken, the step surface is knocked by a knocking tool to complete the separation of the sleeve ring and the pressing cap, for example, the knocking force direction of knocking is along the axial direction of the stud and towards the free end of the stud, and the pressing cap is broken after the sleeve ring is separated from the pressing cap. I.e. the above collar solution comprising the ledge facilitates the separation of the press cap from the collar.
The further technical scheme is as follows:
the terminal surface of pressing the cap to be close to the one end of wiring board is last to be provided with a plurality of recesses, and each recess is: one end of the groove is connected with the central hole on the pressing cap, and the other end of the groove is connected with the outer side of the pressing cap;
the groove is annularly arranged on the end face of the pressing cap;
the lead wire is a stranded wire. In the scheme, the stranded wire is a stranded wire, the lead wire is a stranded wire, the anchoring position of the anchor rod can be determined according to the actual environment by utilizing the flexible convenient grounding device of the stranded wire, and meanwhile, the shape of the section clamped by the pressing cap and the grounding plate on the lead wire is easy to deform when being pressed, so that the aim of improving the contact area of the lead wire and the pressing cap as well as the contact area of the lead wire and the wiring board can be fulfilled; set up to pressing the cap to be close to one of wiring board to serve and still have the recess, above recess not only can expand and press the cap to correspond the area of contact of end portion and lead wire, through the position of injecing each recess both ends, a plurality of recesses are pressing the state of arranging of cap tip simultaneously, after lead wire pressurized produces the local embedding recess that warp, pressing the cap not removing and pressing under the tight circumstances of clamp to lead wire, can avoid lead wire to be connected failure with the wiring board under the circumstances of pulling.
In conclusion, the pressing cap comprises the groove, so that the upper lead wire of the grounding device has the characteristic of reliable connection; because the lead wire can be directly with the wiring board in this scheme, press cap and double-screw bolt direct contact, simultaneously, owing to press including the recess on the cap, lead wire hookup location is owing to change and obtain bigger area of contact, can make earthing device's electric conductive property can more easily obtain guaranteeing to adopt above structure.
The lead wire is preferably formed by a plurality of strands of copper stranded wires, so that the electric connection performance between the lead wire and the wiring board, the stud and the pressing cap can be optimized by utilizing the characteristic of changeability of the copper wires.
For avoiding pressing the cap at the in-process of extrusion lead wire, because the local atress of lead wire is too big and cause the single wire of constituteing the lead wire to be cut off and influence the electric connection quality of lead wire and earth anchor, set up to: the groove surface of the groove and the end surface of the pressing cap are in smooth transition.
As an implementation scheme easy to process, the method comprises the following steps: the grooves are strip-shaped grooves, and the length direction of each groove is located in the radial direction of the pressing cap.
For make press the cap to be close to the one end of lead wire and lead wire can have bigger area of contact, make simultaneously press the cap to be close to the one end of wiring board under the effect of nut, in the radial direction of pressing the cap tip, press all to have comparatively even pressure between cap tip each point and the lead wire in order to obtain the lead wire and press the bigger electrically conductive area of cap, set up to: the pressing cap is in a cone frustum shape with a central hole in the middle, and one end with a larger end face area faces the wiring board. Preferably, the lantern ring is also in a shape of a truncated cone, meanwhile, the length of the lantern ring is equal to that of the pressing cap, and the size of the lantern ring is as follows: after the pressing cap is matched with the lantern ring, the inner side surface of the lantern ring is completely attached to the outer side surface of the pressing cap, so that deformation of each point of the pressing cap can be restrained as much as possible through the lantern ring. Preferably, the bottom of the axial groove is provided with an apex, namely the cross section of the axial groove is triangular, so that the stress concentration at the apex can be utilized in the deformation process of the pressing cap, the pressing cap is cracked, and the subsequent pressing cap is conveniently broken and detached from the stud.
In order to make can be filled by the carbon powder and do benefit to the electric connection performance between lead wire and the earth anchor pole like in the clearance between lead wire and pressure cap, wiring board, the double-screw bolt, wire portion still includes the toner cartridge, toner cartridge and wiring board fixed connection, double-screw bolt, pressure cap all are located the toner cartridge. This scheme is when using, be used for splendid attire carbon dust in the cartridge.
The number of the wire parts is multiple, each toner cartridge is in a container shape with an upward opening, and a wiring groove is formed in the cartridge wall of each toner cartridge;
the wiring grooves are used as communication channels inside and outside the carbon powder box, the lead wires on the wire portions are led into the carbon powder box through the corresponding wiring grooves, and the notch ends of the wiring grooves are located at the upper end of the carbon powder box;
the connection slot on each toner cartridge is arranged at the connection position of each toner cartridge and the wiring board. In the scheme, a plurality of lead parts are arranged, so that a plurality of lead wire connection points are conveniently obtained on the wiring board to realize that the ground anchor rod is connected with the line to be repaired, the equipment or device subjected to the electrical test, the lightning conductor and the equipment subjected to the electric leakage protection through a plurality of lead wires; the ground anchor rod is connected with a plurality of or a plurality of devices or devices which are overhauled the circuit and are subjected to electrical test, the lightning conductor and the device which is subjected to electric leakage protection through a single or a plurality of lead wires, meanwhile, the wiring ends which are connected with the ground anchor rod are not influenced, and the high-quality connection of the lead wires and the ground anchor rod is convenient to realize.
In order to enable the ground anchor rod to more easily penetrate through the hard ground and be embedded into the ground to a certain depth below the ground surface, the ground anchor rod is arranged as follows: the side surface of the lower side of the ground anchor rod is also provided with a spiral rib;
a rotating handle is also fixed on the upper side of the ground anchor rod;
the lower end of the ground anchor rod is a pointed end. In the scheme, the torque is applied to the ground anchor rod through the rotating handle, so that the ground anchor rod is guided by the spiral ribs and is easily embedded into the ground in the rotating process; the above tip can reduce the resistance during the embedding of the earth anchor.
As a connection scheme which is easy to realize and can ensure the electrical connection performance, the connection scheme is as follows: the wiring board is connected with the ground anchor rod through welding connection.
For making the rotation nut in-process, avoid as far as possible pressing the cap to rotate along with the nut and influence the electric connection performance between pressure cap and the lead wire or destroy the lead wire, set up to: the end face of one end, used for being connected with the screw cap, of the pressing cap is a smooth face.
Preferably, the pressing cap is made of copper, namely, the pressing cap is a copper ring.
The invention has the following beneficial effects:
in this scheme, set up to through rotating the nut, at the nut and the in-process that the wiring board is close, with the wiring end centre gripping of lead wire between nut and wiring board. Simultaneously, set up to still including pressing the cap, press the cap cover to establish on the double-screw bolt, press the cap to be located between connector lug and the nut, set up the material that sets up to pressing the cap simultaneously for copper or aluminium, the material of double-screw bolt, nut is the carbon steel, like this, presses the in-process of cap at the nut extrusion, can make to press the cap to produce plastic deformation in order to increase and press cap and lead wire, press cap and double-screw bolt, press the area of contact between cap and the nut in order to improve the electric conductive property between lead wire and the wiring board.
Because the cap is pressed to take place to warp the back under the effect of nut and press the cap can bond on the double-screw bolt or form the close-fitting relation with the double-screw bolt, above bonding and close-fitting relation influence the removal of connector lug and double-screw bolt relation of being connected, so set up to still including setting up the many axial grooves on pressing the cap outside, when above axial groove is used for connector lug and double-screw bolt separation, through tools such as pincers worker flat shovel, pincers worker crow bar, the destruction is pressed the cap and is made it become non-closed ring and convenient will be pressed the cap and remove on by the double-screw bolt. In this scheme, set up to the axial groove be a plurality ofly, and the annular distribution on pressing the cap, can make operating personnel can destroy by the angle of convenient operation and press the cap or convenient will press the cap to destroy and be the polylith.
As mentioned above, this scheme need press the cap so that it produces plastic deformation and optimizes the electrical connection performance of lead wire and ground stock when using through the nut extrusion, simultaneously including the axial slot on the pressure cap, press the whole ring structure of cap to suffer destruction and influence the electrical connection performance of lead wire and double-screw bolt for avoiding the nut to press in-process pressure cap in the extrusion, in this scheme, set up to still including the lantern ring, above lantern ring is the hoop of cover locating on the pressure cap outside for press the cap radial deformation to provide the restraint, press the intact of the whole ring structure of cap in-process pressure cap in order to keep the nut extrusion.
As described above, since the connection relationship between the lead wire and the stud is removed at last, the pressing cap needs to be damaged, and the tight fit relationship is formed between the collar and the pressing cap after the pressing cap is deformed, in this scheme, an annular stopper edge is further arranged at one end of the collar close to the nut, and an annular step surface is formed on the outer side surface of the collar by the stopper edge. Thus, before the pressing cap is broken, the step surface is knocked by a knocking tool to complete the separation of the sleeve ring and the pressing cap, for example, the knocking force direction of knocking is along the axial direction of the stud and towards the free end of the stud, and the pressing cap is broken after the sleeve ring is separated from the pressing cap. I.e. the above collar solution comprising the ledge facilitates the separation of the press cap from the collar.
Drawings
Fig. 1 is a partial schematic view showing the structure of a pressing cap and a sleeve ring and the matching relationship between the pressing cap and the sleeve ring according to an embodiment of the grounding device for electrical engineering of the present invention, which is an exploded view;
fig. 2 is a partial schematic view of an embodiment of an electrical engineering grounding device according to the present invention, the partial schematic view reflecting the structure of a wire portion and the connection relationship between the wire portion and a wiring board;
fig. 3 is a schematic structural diagram of an embodiment of an electrical engineering grounding device according to the present invention;
fig. 4 is a side view of a collar in an embodiment of the grounding device for electrical engineering according to the present invention.
The reference numbers in the figures are in order: 1. the pressure cap, 11, recess, 12, axial groove, 2, lead wire, 3, wiring board, 4, toner cartridge, 41, wiring groove, 5, nut, 6, the lantern ring, 61, shelves are followed, 7, double-screw bolt, 8, earth anchor, 9, turning handle, 10, spiral arris strip.
Detailed Description
The present invention will be described in further detail with reference to examples, but the structure of the present invention is not limited to the following examples.
Example 1:
as shown in fig. 1 to 4, an electrical engineering grounding device comprises a ground anchor rod 8 and a wiring portion installed on the ground anchor rod 8, wherein the wiring portion comprises a wiring board 3 and a wire portion, the wire portion comprises a stud 7, a nut 5 and a lead wire 2, the wiring board 3 is electrically connected with the ground anchor rod 8, one end of the stud 7 is welded on the wiring board 3, the nut 5 is in threaded connection with the stud 7, the wire end of the lead wire 2 is clamped between the wiring board 3 and the nut 5, the grounding device further comprises a press cap 1, the press cap 1 is made of copper or aluminum, the stud 7 and the nut 5 are made of carbon steel, and the press cap 1 is annular;
the pressing cap 1 is sleeved on the stud 7, and the pressing cap 1 is positioned between the connector lug and the screw cap 5;
a plurality of strip-shaped axial grooves 12 are further formed in the outer side of the pressing cap 1, one end of each axial groove 12 is connected with one end of the pressing cap 1, and the other end of each axial groove 12 is connected with the other end of the pressing cap 1;
a plurality of axial grooves 12 are annularly arranged on the outer side surface of the pressure cap 1;
the pressing cap further comprises a lantern ring 6, and the lantern ring 6 is sleeved on the pressing cap 1;
an annular blocking edge 61 is further arranged at one end, close to the screw cap 5, of the lantern ring, and an annular step surface is formed on the outer side surface of the lantern ring 6 by the blocking edge 61;
the end face of the nut 5 is in contact with the end face of the pressing cap 1, and the end face of the lantern ring 6 is located on the outer side of the end face of the nut 5.
Conventionally, a temporary power grounding device is generally anchored by a ground anchor 8, and a lead wire 2 is used as an electrical connection wire between the ground anchor 8 and a device or apparatus to be grounded corresponding to a line to be inspected. In consideration of convenience of the ground anchor 8 in anchoring, it is generally set that the connection relationship between the ground anchor 8 and the lead wire 2 is a detachable connection relationship: before the ground anchor rod 8 is anchored into the ground, the lead wire 2 is separated from the ground anchor rod 8 so as to facilitate the anchoring of the ground anchor rod 8 and avoid the damage to the lead wire 2 in the anchoring process of the ground anchor rod 8; before the ground anchor rod 8 is pulled out, the lead wire 2 is separated from the ground anchor rod 8, so that the ground anchor rod 8 can be conveniently pulled out, and the lead wire 2 is prevented from being damaged in the process of pulling out the ground anchor rod 8.
However, in the prior art, a connection method of the wiring board 3 and the lead wire 2 is generally adopted, in which a connection base is disposed on the wiring board 3, the connection base includes a rectangular tube-shaped wire inserting cylinder, the wire inserting cylinder is fixedly connected with the wiring board 3, one or more wire pressing screws are connected to the wire inserting cylinder, and after the terminal of the lead wire 2 is inserted into the wire inserting cylinder, the lead wire 2 is fixedly connected with the connection base by applying pressure to the lead wire 2 through the wire pressing screws. In the above connection manner, since the diameter of the wire pressing screw should not be set too large, the area of positive pressure between the lead wire 2 and the wire inserting cylinder and between the lead wire 2 and the wire pressing screw is limited by the diameter of the wire pressing screw, so that the connection reliability of the lead wire 2 and the wire holder is poor, and the resistance value of the connection position of the lead wire 2 on the grounding device is large, which is not only unfavorable for the use safety of the grounding device, but also unfavorable for the grounding performance of the grounding device.
In the scheme, the wire portion on the wiring board 3 is the connecting portion used for being electrically connected with the lead wire 2 on the wiring board 3, if through the end portion of the lead wire 2, namely the wiring end winds a lantern ring 6 surrounding the stud 7, the end portion of the lead wire 2 is directly forked and the stud 7 is positioned in the fork of the lead wire 2, the end portion of the lead wire 2 is directly inserted into a gap between the pressing cap 1 and the wiring board 3, the position of the pressing cap 1 on the axis of the stud 7 is adjusted through the screw cap 5, and the lead wire 2 can be electrically connected with the wiring board 3 through the pressing cap 1 and the wiring board 3.
Is arranged to clamp the terminal of the lead wire 2 between the nut 5 and the terminal block 3 during the approach of the nut 5 to the terminal block 3 by rotating the nut 5. Simultaneously, set up to still including pressing cap 1, press 1 covers of cap to establish on double-screw bolt 7, press cap 1 to be located between connector lug and nut 5, set up to pressing cap 1's material simultaneously for copper or aluminium, the material of double-screw bolt 7, nut 5 is the carbon steel, like this, presses the in-process of cap 1 at nut 5 extrusion, can make and press cap 1 to produce plastic deformation in order to increase and press cap 1 and lead wire 2, press cap 1 and double-screw bolt 7, press the area of contact between cap 1 and the nut 5 in order to improve the electric conductive property between lead wire 2 and the wiring board 3.
Because the cap 1 of pressing takes place to warp under the effect of nut 5 the back and presses cap 1 can bond on double-screw bolt 7 or form the close-fitting relation with double-screw bolt 7, it influences the removal of connector lug and double-screw bolt 7 relation of being connected with the close-fitting relation to bond above, so set up to still including setting up many axial grooves 12 on the cap 1 outside, when above axial groove 12 is used for connector lug and double-screw bolt 7 to separate, through tools such as pincers worker flat shovel, pincers worker crow bar, destroy and press cap 1 and make it become non-closed ring and convenient will press cap 1 to remove on the double-screw bolt 7. In this scheme, set up to axial groove 12 for a plurality ofly, and the annular distribution is on pressing cap 1, can make operating personnel can destroy by the angle of convenient operation and press cap 1 or convenient will press cap 1 to destroy and be the polylith.
As described above, in the present scheme, when in use, the nut 5 is required to extrude the pressing cap 1 so as to enable the pressing cap to generate plastic deformation to optimize the electrical connection performance of the lead wire 2 and the ground anchor rod 8, and meanwhile, the pressing cap 1 comprises the axial groove 12, so as to prevent the whole circular ring structure of the pressing cap 1 from being damaged in the process of extruding the pressing cap 1 by the nut 5 to influence the electrical connection performance of the lead wire 2 and the stud 7, in the present scheme, the pressing cap further comprises the lantern ring 6, the lantern ring 6 is a hoop sleeved on the outer side of the pressing cap 1, and is used for providing constraint for radial deformation of the pressing cap 1 so as to maintain integrity of the whole circular ring structure of the pressing cap 1 in the process of extruding the pressing cap 1.
As described above, since the connection relationship between the lead wire 2 and the stud 7 needs to be removed finally, the pressing cap 1 needs to be damaged, and the collar 6 and the pressing cap 1 form a tight fit relationship after the pressing cap 1 is deformed, in this scheme, an annular stop edge 61 is further provided at one end of the collar close to the nut 5, and the stop edge 61 forms an annular step surface on the outer side surface of the collar 6. In this way, before the pressing cap 1 is broken, the stepped surface is firstly knocked by a knocking tool to complete the separation of the collar 6 and the pressing cap 1, and as the knocking force direction of the knocking is along the axial direction of the stud 7 and towards the free end of the stud 7, the pressing cap 1 is broken after the collar 6 is separated from the pressing cap 1. I.e. the above collar 6 solution comprising the ledge 61 facilitates the separation of the press cap 1 from the collar 6.
Preferably, the material of the pressing cap 1 is copper, that is, the pressing cap 1 is a copper ring.
Example 2:
as shown in fig. 1 to 4, the present embodiment is further defined on the basis of embodiment 1: press cap 1 to be provided with a plurality of recesses 11 on being close to the terminal surface of the one end of wiring board 3, each recess 11 is: one end of the groove 11 is connected with a central hole on the pressure cap 1, and the other end of the groove 11 is connected with the outer side of the pressure cap 1;
the groove 11 is annularly arranged on the end surface of the pressure cap 1;
the lead wire 2 is a stranded wire. In the scheme, the stranded wire is a stranded wire, the lead wire 2 is a stranded wire, the anchoring position of the anchor rod 8 can be determined according to the actual environment by utilizing the flexible convenient grounding device of the stranded wire, and meanwhile, the section clamped by the pressing cap 1 and the grounding plate on the lead wire 2 is easy to deform when pressed, so that the aim of improving the contact area of the lead wire 2 and the pressing cap 1 as well as the contact area of the lead wire 2 and the wiring board 3 can be fulfilled; set up to pressing cap 1 to be close to one of wiring board 3 and still have recess 11, above recess 11 not only can expand the area of contact who presses cap 1 to correspond the end tip and lead wire 2, through the position of injecing each recess 11 both ends, a plurality of recesses 11 are pressing the state of arranging of cap 1 tip simultaneously, lead wire 2 pressurized and produce the local embedding recess 11 of deformation after, press cap 1 not removing and press under the tight condition of 2 clamps of lead wire, can avoid lead wire 2 to be connected failure with wiring board 3 under the condition of dragging.
In conclusion, the pressing cap 1 comprises the groove 11, so that the upper lead wire 2 of the grounding device has the characteristic of reliable connection; because lead wire 2 can be direct with wiring board 3 in this scheme, press cap 1 and double-screw bolt 7 direct contact, simultaneously, owing to press including recess 11 on the cap 1, lead wire 2 hookup location can be owing to obtain bigger area of contact more easily, and the structure can make earthing device's electric conductive property can more easily obtain guaranteeing more above adopting.
The lead wire 2 is preferably formed by a plurality of strands of copper stranded wires, so that the electrical connection performance between the lead wire 2 and the wiring board 3, the stud 7 and the pressing cap 1 can be optimized by utilizing the characteristic of copper wire changeability.
In order to avoid pressing cap 1 in the in-process of extrusion lead wire 2, because lead wire 2 local atress too big and cause that the single wire that constitutes lead wire 2 is cut off and influence the electric connection quality of lead wire 2 and earth anchor 8, set up to: the groove surface of the groove 11 and the end surface of the pressing cap 1 are in smooth transition.
As an implementation scheme easy to process, the method comprises the following steps: the grooves 11 are strip-shaped grooves, and the length direction of each groove 11 is located in the radial direction of the pressing cap 1.
For make press cap 1 to be close to the one end of lead wire 2 and lead wire 2 can have bigger area of contact, make simultaneously press cap 1 to be close to the one end of wiring board 3 under the effect of nut 5, at the radial direction of pressing cap 1 tip, all have comparatively even pressure between 1 tip each point of press cap and the lead wire 2 in order to obtain lead wire 2 and the more electrically conductive area of press cap 1, set up to: the pressing cap 1 is in a cone frustum shape with a central hole in the middle, and one end, with a larger end surface area, of the pressing cap 1 faces the wiring board 3. Preferably, the lantern ring 6 is also in a shape of a truncated cone, meanwhile, the length of the lantern ring 6 is equal to that of the pressing cap 1, and the size of the lantern ring 6 is as follows: after the pressing cap 1 is matched with the lantern ring 6, the inner side surface of the lantern ring 6 is completely attached to the outer side surface of the pressing cap 1, so that deformation of each point of the pressing cap 1 can be restrained as much as possible through the lantern ring 6. Preferably, the bottom of the axial groove 12 is provided with a tip, that is, the cross section of the axial groove 12 is triangular, so that during the deformation of the press cap 1, stress concentration at the tip can be utilized, so that the press cap 1 cracks to facilitate the subsequent removal of the press cap 1 from the stud 7.
In order to ensure that the gaps between the lead wire 2 and the pressing cap 1, the wiring board 3 and the stud 7 can be filled with carbon powder to be beneficial to the electric connection performance between the lead wire 2 and the ground anchor rod 8, the wire part also comprises a carbon powder box 4, the carbon powder box 4 is fixedly connected with the wiring board 3, and the stud 7 and the pressing cap 1 are both positioned in the carbon powder box 4. When the carbon powder box is used, the carbon powder box 4 is used for containing carbon powder.
The number of the wire parts is multiple, each toner cartridge 4 is in a container shape with an upward opening, and a wiring groove 41 is formed in the cartridge wall of each toner cartridge 4;
the wiring grooves 41 are used as communication channels of the inner side and the outer side of the toner cartridge 4, the lead wires 2 on each wire portion are led into the toner cartridge 4 through the corresponding wiring grooves 41, and the notch end of each wiring groove 41 is positioned at the upper end of the toner cartridge 4;
the opening position of the wiring groove 41 on each toner cartridge 4 is located at the connecting position of each toner cartridge 4 and the wiring board 3. In the scheme, a plurality of lead parts are arranged, so that a plurality of lead wire 2 connection points are conveniently obtained on the wiring board 3 to connect the ground anchor rod 8 with the line to be repaired, the equipment or device to be subjected to the electrical test, the lightning conductor and the equipment to be subjected to the electric leakage protection through the plurality of lead wires 2; the ground anchor rod 8 is connected with a plurality of or a plurality of devices or devices which are overhauled circuits and are subjected to electrical tests, lightning conductors and devices which are protected by electric leakage through a single or a plurality of lead wires 2, meanwhile, wiring ends of the lead wires 2 connected with the ground anchor rod 8 are not influenced mutually, and the high-quality connection of the lead wires 2 and the ground anchor rod 8 is facilitated.
In order to make the ground anchor rod 8 more easily penetrate through the hard ground and be embedded to a certain depth below the ground surface, the arrangement is that: the side surface of the lower side of the ground anchor rod 8 is also provided with a spiral rib 10;
a rotating handle 9 is also fixed on the upper side of the ground anchor rod 8;
the lower end of the ground anchor rod 8 is a tip. In the scheme, the torque is applied to the ground anchor rod 8 through the rotating handle 9, so that the ground anchor rod 8 is guided by the spiral ribs 10 in the rotating process and is easily embedded into the ground; the above tip can reduce resistance during insertion of the anchor 8.
As a connection scheme which is easy to realize and can ensure the electrical connection performance, the connection scheme is as follows: the terminal plate 3 is connected to a ground anchor 8 by a welded connection.
In order to prevent the pressing cap 1 from influencing the electric connection performance between the pressing cap 1 and the lead wire 2 or damaging the lead wire 2 along with the rotation of the screw cap 5 as much as possible in the process of rotating the screw cap 5, the arrangement is as follows: the end face of one end, which is used for being connected with the screw cap 5, of the pressing cap 1 is a smooth face.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited to these descriptions. For those skilled in the art to which the invention pertains, other embodiments that do not depart from the scope of the invention are intended to be encompassed by the scope of the invention.
Claims (10)
1. The utility model provides an electric power engineering earthing device, includes ground stock (8) and installs the wiring portion on ground stock (8), wiring portion includes wiring board (3) and wire portion, wire portion includes double-screw bolt (7), nut (5) and lead wire (2), wiring board (3) are connected with ground stock (8) electricity, and the one end of double-screw bolt (7) welds on wiring board (3), and nut (5) threaded connection is on double-screw bolt (7), the binding post head of lead wire (2) is by centre gripping between wiring board (3) and nut (5), its characterized in that still includes pressure cap (1), the material of pressure cap (1) is copper or aluminium, the material of double-screw bolt (7), nut (5) is the carbon steel, pressure cap (1) shape is the annular;
the pressing cap (1) is sleeved on the stud (7), and the pressing cap (1) is located between the connector lug and the screw cap (5);
a plurality of strip-shaped axial grooves (12) are further formed in the outer side of the pressing cap (1), one ends of the axial grooves (12) are connected with one end of the pressing cap (1), and the other ends of the axial grooves (12) are connected with the other end of the pressing cap (1);
a plurality of axial grooves (12) are annularly arranged on the outer side surface of the pressure cap (1);
the pressing cap is characterized by further comprising a lantern ring (6), wherein the lantern ring (6) is sleeved on the pressing cap (1);
one end of the lantern ring (6) close to the nut (5) is also provided with an annular blocking edge (61), and the blocking edge (61) forms an annular step surface on the outer side surface of the lantern ring (6);
the end face of the nut (5) is in contact with the end face of the pressing cap (1), and the end face of the lantern ring (6) is located on the outer side of the end face of the nut (5).
2. An electrical engineering grounding device according to claim 1, characterized in that the end surface of the pressing cap (1) near the end of the terminal block (3) is provided with a plurality of grooves (11), and each groove (11) is: one end of the groove (11) is connected with a central hole on the pressure cap (1), and the other end of the groove (11) is connected with the outer side of the pressure cap (1);
the groove (11) is annularly arranged on the end surface of the pressure cap (1);
the lead wire (2) is a stranded wire.
3. An electrical engineering grounding device according to claim 2, characterized in that the groove surface of the groove (11) is smoothly transited to the end surface of the pressing cap (1).
4. The grounding device for electric power engineering according to claim 2, wherein the grooves (11) are all strip-shaped grooves, and the length direction of each groove (11) is located in the radial direction of the pressing cap (1).
5. The grounding device for electric power engineering according to claim 1, wherein the pressing cap (1) is in a truncated cone shape with a central hole in the middle, and the end with larger area of the end surface of the pressing cap (1) faces the wiring board (3).
6. The electrical engineering grounding device according to claim 1, wherein the wire portion further comprises a toner cartridge (4), the toner cartridge (4) is fixedly connected with the wiring board (3), and the stud (7) and the gland (1) are both located in the toner cartridge (4).
7. The grounding device for electric power engineering according to claim 6, wherein the wire portion is a plurality of wire portions, each toner cartridge (4) is in a container shape with an upward opening, and a wire connecting groove (41) is formed in the wall of each toner cartridge (4);
the wiring grooves (41) are used as communication channels of the inner side and the outer side of the toner cartridge (4), the lead wires (2) on each wire portion are led into the toner cartridge (4) through the corresponding wiring grooves (41), and the notch end of each wiring groove (41) is positioned at the upper end of the toner cartridge (4);
the connection slot (41) on each toner cartridge (4) is arranged at the connection position of each toner cartridge (4) and the wiring board (3).
8. An electrical engineering grounding device according to any one of claims 1 to 7, characterized in that the side surface of the lower side of the ground anchor rod (8) is further provided with a helical rib (10) in a spiral shape;
a rotating handle (9) is also fixed on the upper side of the ground anchor rod (8);
the lower end of the ground anchor rod (8) is a pointed end.
9. An electrical engineering grounding device according to any one of claims 1 to 7, characterized in that the terminal block (3) is connected to a ground anchor (8) by a welded connection.
10. An electrical engineering grounding device according to any one of claims 1 to 7 characterized in that the end surface of the pressing cap (1) at the end for connecting with the screw cap (5) is smooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114615.1A CN109216950B (en) | 2018-09-25 | 2018-09-25 | Electric power engineering earthing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114615.1A CN109216950B (en) | 2018-09-25 | 2018-09-25 | Electric power engineering earthing device |
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| CN109216950A CN109216950A (en) | 2019-01-15 |
| CN109216950B true CN109216950B (en) | 2020-09-01 |
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| CN201811114615.1A Expired - Fee Related CN109216950B (en) | 2018-09-25 | 2018-09-25 | Electric power engineering earthing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109217164B (en) * | 2018-09-25 | 2020-10-09 | 四川知创知识产权运营有限公司 | Outdoor electric power construction appliance |
| CN111755955B (en) * | 2020-07-02 | 2022-03-11 | 上海市计量测试技术研究院 | High-tension electricity cabinet ground protection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100866933B1 (en) * | 2008-04-23 | 2008-11-04 | (주)와이즈산전 | Ground rod having screw-formed base |
| CN201496365U (en) * | 2009-09-06 | 2010-06-02 | 宁波置信非晶科技发展有限公司 | Bolt device with toothed flange faces |
| CN202888415U (en) * | 2012-07-27 | 2013-04-17 | 长沙中联消防机械有限公司 | Grounding device |
| CN206250405U (en) * | 2016-12-02 | 2017-06-13 | 北京华电博慧科技有限公司 | A kind of protective earthing device |
| CN207490121U (en) * | 2017-10-04 | 2018-06-12 | 刘礼霞 | A kind of electrical power wiring column of power engineering |
| CN107956331A (en) * | 2017-11-30 | 2018-04-24 | 贵州长通电气有限公司 | A kind of distribution cabinet door lock construction and its assemble method |
| CN108155490B (en) * | 2018-01-10 | 2023-05-30 | 东风商用车有限公司 | Public grounding structure and use method thereof |
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