CN210926377U - Earthing device suitable for cubical switchboard cable head - Google Patents
Earthing device suitable for cubical switchboard cable head Download PDFInfo
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- CN210926377U CN210926377U CN201921952676.5U CN201921952676U CN210926377U CN 210926377 U CN210926377 U CN 210926377U CN 201921952676 U CN201921952676 U CN 201921952676U CN 210926377 U CN210926377 U CN 210926377U
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- worm wheel
- worm
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- 210000002105 tongue Anatomy 0.000 claims description 35
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 241001423398 Ruscus hypoglossum Species 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses an earthing device suitable for cubical switchboard cable head, including earth clamp, insulating bar and earth connection, the earth clamp includes arc tongue piece, bolt through-hole, left worm wheel, right worm wheel, worm, stopper, mount, dop, and left worm wheel, right worm wheel are installed on the mount, and the worm sets up between left worm wheel and right worm wheel and intermeshing, and the upper end of left worm wheel and right worm wheel all is equipped with arc tongue piece, and when two arc tongue pieces were closed, it is close "O" shape, is equipped with the bolt through-hole of being connected with the earth connection on one of them arc tongue piece; two horizontal clamping heads are symmetrically arranged at the lower end of the worm. The insulating operating rod comprises a clamping sleeve, a head rod, an upper coupler, a torque sensor, a lower coupler, a tail rod and an anti-skidding insulating handle, wherein one end of a grounding wire is provided with a wire clamp side copper nose, and the other end of the grounding wire is grounded. The utility model discloses simple structure, convenient operation, safe and reliable has reduced the power off time, has improved work efficiency.
Description
Technical Field
The utility model relates to an electric power system operation tool technical field, specific is a earthing device suitable for cubical switchboard cable head.
Background
The high-voltage grounding wire is a necessary safety tool for line and power transformation maintenance and preventing a maintainer from getting an electric shock due to induced electricity generated by adjacent live equipment or false switching-on. The hanging ground wire is a safety barrier for protecting the maintainers, and can also be said to be a life line of the maintainers. The reliable connection of the grounding wire is the key for ensuring the safety of maintainers.
When the switch cabinet is overhauled, especially when the switch cabinet is required to be overhauled, the grounding wire is required to be hung at the cable head so as to prevent the induced electricity at the side of the cable or the fault switching-on from damaging the maintainers. The traditional high-voltage grounding wire can be divided into the following parts according to the use environment: an indoor busbar type ground wire and an outdoor line type ground wire. Indoor bus bar type earth connection wire clamp is generally flat mouthful spiral pressing mode, and the dop is the plane, and cubical switchboard cable joint is cylindrical, and both contact surfaces are less, lead to articulating the earth line insecure, and easy left and right rocking sways, and it drops to be possible because of external force factor messenger earth connection very much, causes very big potential safety hazard for maintainer and equipment. Outdoor circuit type earth connection operating rod is longer, and cubical switchboard cable interior space is less, hangs and establishes the back and hinders the maintainer to overhaul the operation to the equipment in the cubical switchboard to outdoor circuit type earth connection wire clamp is two tongue formulas generally, is applicable to the wire, if hang and establish relatively thick cable overhead, also can appear hanging and establish insecure problem.
The existing grounding wire, whether in a flat spiral compression type or a double-tongue type, can not be quantized through data if a wire clamp is used for reliably clamping power failure equipment. The flat spiral compression type is that an operator rotates an insulating rod to drive a lower chuck to enable a wire clamp to clamp power failure equipment. The clamping degree of the ground wire clamp hung on the ground wire clamp is different due to the difference of arm strength of different operators, and whether the ground wire clamp is reliably clamped can only be determined by experience. The clamping lead of the double-tongue type grounding wire is close to the expansion force of the double-tongue spring, and the clamping degree cannot be judged.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is exactly to solve and hang the above-mentioned problem that exists when establishing the earth connection to the cubical switchboard cable head, for this provides one kind and connects reliably, convenient operation, security performance height to can realize the earthing device who is applicable to the cubical switchboard cable head of data quantization.
In order to achieve the technical purpose, the utility model adopts the technical proposal that: the utility model provides an earthing device suitable for cubical switchboard cable head, includes earth clamp, insulating bar and earth connection, the earth clamp includes arc tongue piece, bolt through-hole, left worm wheel, right worm wheel, worm, stopper, mount, dop, left worm wheel, right worm wheel are installed on the mount, and the tooth portion of left worm wheel, right worm wheel is the quarter of worm wheel girth, and the tooth portion both ends of left worm wheel and right worm wheel respectively are equipped with the stopper for the rotation angle of restriction worm wheel, the worm sets up and intermeshing between left worm wheel and right worm wheel, worm screw thread direction is dextrorotation, and when the worm rotates clockwise, left worm wheel and right worm wheel direction of rotation are downward, and the direction is opposite when anticlockwise rotating; the upper ends of the left worm wheel and the right worm wheel are respectively provided with an arc-shaped tongue piece, the two arc-shaped tongue pieces are opened or closed along with the rotation of the worm wheel, when the two arc-shaped tongue pieces are closed, the two arc-shaped tongue pieces are close to an O shape, and one of the two arc-shaped tongue pieces is provided with a bolt through hole connected with a grounding wire; two horizontal clamping heads are symmetrically arranged at the lower end of the worm. The insulating operation rod comprises a clamping sleeve, a head rod, an upper coupler, a torque sensor, a lower coupler, a tail rod and an anti-skidding insulating handle, the clamping sleeve is arranged above the head rod, the head rod is connected with the upper transmission shaft at one end of the torque sensor through the upper coupler, the lower transmission shaft at the other end of the torque sensor is connected with the tail rod through the lower coupler, and the anti-skidding insulating handle is arranged at the lower end of the tail rod. The grounding wire is a copper stranded wire, an insulating layer wraps the outer surface of the copper stranded wire, one end of the grounding wire is provided with a wire clamp side copper nose connected with the bolt through hole in the arc-shaped tongue piece, and the other end of the grounding wire is provided with a grounding side copper nose used for being fixed on a grounding copper bar or other grounding electrodes in the switch cabinet.
Further, the mount is the rectangle frame construction, left side worm wheel and right worm wheel rotary type respectively install the both ends at the mount, the worm sets up at the center of mount and meshes with left worm wheel and right worm wheel mutually, and the lead angle of worm is less than the equivalent friction angle between the meshing wheel tooth, and the worm and gear have reverse auto-lock nature, therefore the worm can only drive the worm wheel and rotate.
Furthermore, the two arc-shaped tongues are closed in a crossed and overlapped mode, so that cable heads with different diameters can be firmly clamped.
Furthermore, two J-shaped clamping grooves are symmetrically formed in the side wall of the clamping sleeve, the directions of hook parts of the two clamping grooves are opposite, and the clamping grooves are used for being matched and clamped with a clamping head at the lower end of the worm.
Furthermore, the anti-skid insulating handle is made of rubber with texture on the surface.
The utility model has the advantages that:
(1) the utility model discloses simple structure, convenient operation, earth connection clamp are designed for the arc tongue, and when two arc tongue pieces were rotatory to the closure, two arc tongue piece components were close "O" shape, have increased the area of contact of pressing from both sides mouth and cable head, can be more extensive wrap the cable head, have effectively prevented to lead to articulating the insecure problem of ground wire because the contact surface is less.
(2) The utility model discloses an earth clamp utilizes the reverse auto-lock principle of worm wheel worm, and when the lead angle of worm was less than the equivalent friction angle between the meshing wheel tooth, worm wheel worm mechanism had reverse auto-lock nature, can only the worm drive the worm wheel promptly, and can not drive the worm by the worm wheel. Unless the worm rotates, the screwed grounding wire clamp cannot be loosened, and the condition that the grounding wire clamp is loosened due to external factors to cause unreliable grounding can be effectively avoided.
(3) The utility model discloses an insulating bar adopts detachably, presss from both sides tight back when the earth clamp, can lift insulating bar off, has left operation space for the maintenance work of cubical switchboard cable chamber like this, has improved maintenance efficiency to a certain extent, has reduced the equipment power off time.
(4) The utility model discloses an insulated operating rod is provided with torque sensor, makes the fastener and the tight degree of clamp of power failure equipment quantize. When an operator rotates the insulating operating rod to enable the wire clamp to clamp the cable head, the real-time torque value of the torque sensor on the insulating operating rod is observed, when the cable head is rotated to a certain torque value, the wire clamp is shown to clamp the cable head, and the condition that the grounding wire clamp does not completely clamp the cable head due to insufficient arm strength or experience of the operator and the grounding is unreliable can be effectively avoided.
Drawings
Fig. 1 is a schematic structural diagram provided in the embodiment of the present invention.
Fig. 2 is a schematic view of an installation structure of the fixing frame and the worm wheel provided by the embodiment of the present invention.
Fig. 3 is a schematic view of a structure of a clamping sleeve according to an embodiment of the present invention.
In the figure: 1-arc tongue piece, 2-bolt through hole, 3-left worm wheel, 4-right worm wheel, 5-worm, 6-limiting block, 7-fixing frame, 8-clamping head, 9-clamping sleeve, 10-head rod, 11-upper coupling, 12-torsion sensor, 13-lower coupling, 14-tail rod, 15-antiskid insulated handle, 16-upper transmission shaft, 17-lower transmission shaft, 18-wire clamp side copper nose, 19-grounding side copper nose and 20-clamping groove.
Detailed Description
In order to make the technical means, creation features, achievement purposes and effects of the present invention clearer and easier to understand, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-3, the utility model provides a grounding device for a cable head of a switch cabinet, which comprises a grounding wire clamp, an insulating operating rod and a grounding wire, the ground wire clamp comprises an arc tongue piece 1, a bolt through hole 2, a left worm wheel 3, a right worm wheel 4, a worm 5, a limiting block 6, a fixing frame 7 and a clamping head 8, the left worm wheel 3 and the right worm wheel 4 are arranged on a fixed frame 7, the tooth parts of the left worm wheel 3 and the right worm wheel 4 are one fourth of the circumference of the worm wheel, two ends of the tooth parts of the left worm wheel 3 and the right worm wheel 4 are respectively provided with a limit block 6, for limiting the rotation angle of the worm wheel, the worm 5 is arranged between the left worm wheel 3 and the right worm wheel 4 and is meshed with each other, the thread direction of the worm 5 is right-handed, when the worm 5 rotates clockwise, the left worm wheel 3 and the right worm wheel 4 rotate downwards, and the directions are opposite when the worm rotates anticlockwise; the upper ends of the left worm wheel 3 and the right worm wheel 4 are both provided with arc-shaped tongues 1, the two arc-shaped tongues 1 are opened or closed along with the rotation of the worm wheels, when the two arc-shaped tongues 1 are closed, the shape is close to an O shape, and one of the two arc-shaped tongues 1 is provided with a bolt through hole 2 connected with a grounding wire; the lower end of the worm 5 is symmetrically provided with two horizontal clamping heads 8. Insulating bar includes joint cover 9, first pole 10, goes up shaft coupling 11, torque sensor 12, lower shaft coupling 13, tail-stock 14, anti-skidding insulating handle 15, joint cover 9 sets up in the top of first pole 10, and first pole 10 is connected with the last transmission shaft 16 of torque sensor 12 one end through last shaft coupling 11, and the lower transmission shaft 17 of the torque sensor 12 other end is connected with tail-stock 14 through lower shaft coupling 13, and the lower extreme of tail-stock 14 is provided with anti-skidding insulating handle 15. The grounding wire is a copper stranded wire, an insulating layer wraps the outer surface of the copper stranded wire, one end of the grounding wire is provided with a wire clamp side copper nose 18 connected with the bolt through hole 2 on the arc-shaped tongue piece 1, and the other end of the grounding wire is provided with a grounding side copper nose 19 used for being fixed on a grounding copper bar or other grounding electrodes in the switch cabinet.
Based on the above embodiment, the fixing frame 7 in the embodiment of the present invention is a rectangular frame structure, the left worm wheel 3 and the right worm wheel 4 are respectively rotatably mounted at two ends of the fixing frame 7, the worm 5 is disposed at the center of the fixing frame 7 and meshed with the left worm wheel 3 and the right worm wheel 4, the lead angle of the worm 5 is smaller than the equivalent friction angle between the meshing wheel teeth, the worm and worm wheel have reverse self-locking property, and therefore the worm can only drive the worm wheel to rotate.
Based on above-mentioned embodiment, the utility model provides an in two arc tongue 1 be alternately the box-like closure of folding to ensure that the cable head of different diameters can both firmly press from both sides tightly.
Based on the above embodiment, the utility model provides an on the lateral wall of joint cover 9 the symmetry set up two "J" shape draw-in grooves 20 to hook portion opposite direction of two draw-in grooves 20, this draw-in groove 20 is used for cooperating the joint with dop 8 of worm 5 lower extreme.
Based on the above embodiment, the embodiment of the utility model provides an antiskid insulated handle 15 is the rubber material that the surface has the texture.
A use method of the grounding device suitable for a cable head of a switch cabinet comprises the following steps:
a wire clamp side copper nose 18 at one end of a grounding wire is tightly connected with a bolt through hole 2 of an arc-shaped tongue piece 1 through a bolt, and a grounding side copper nose 19 at the other end of the grounding wire is fixedly connected with a grounding copper bar or other grounding electrodes in a switch cabinet; the worm is rotated anticlockwise, the left worm wheel 3 and the right worm wheel 4 move upwards under the driving of the worm 5, and the two arc-shaped tongues 1 are in the maximum opening state; an operator holds the antiskid insulating handle at the lower end of the insulating operating rod with two hands, the lower end of the worm 5 is inserted into the clamping sleeve 9, and then the insulating operating rod is slightly rotated clockwise, so that the clamping head is clamped with the clamping groove 20 in a matching manner; the insulating operating rod slowly picks up the grounding wire clamp to enable the two arc-shaped tongues 1 to wrap the cable head of the switch cabinet, then the insulating operating rod is rotated clockwise to enable the opening wire clamp to be closed slowly, the cable head is wrapped tightly, a torque value displayed by the torque sensor 12 in real time is observed, and when the torque value reaches a preset screwing numerical value, the rotation is stopped; slightly driving the insulated operating rod to separate the clamping head 8 from the clamping groove 20, thereby detaching the insulated operating rod; when the grounding wire is disassembled, the insulating operating rod is clamped with the grounding wire clamp, the worm is driven anticlockwise to rotate, so that the two arc-shaped tongues 1 are opened, and the disassembly can be completed.
The utility model discloses simple structure, convenient operation, earth connection clamp are designed for the arc tongue, and when two arc tongue pieces were rotatory to the closure, two arc tongue piece components were close "O" shape, have increased the area of contact of pressing from both sides mouth and cable head, can be more extensive wrap the cable head, have effectively prevented to lead to articulating the insecure problem of ground wire because the contact surface is less.
The utility model discloses an earth clamp utilizes the reverse auto-lock principle of worm wheel worm, and when the lead angle of worm was less than the equivalent friction angle between the meshing wheel tooth, worm wheel worm mechanism had reverse auto-lock nature, can only the worm drive the worm wheel promptly, and can not drive the worm by the worm wheel. Unless the worm rotates, the screwed grounding wire clamp cannot be loosened, and the condition that the grounding wire clamp is loosened due to external factors to cause unreliable grounding can be effectively avoided.
The utility model discloses an insulating bar adopts detachably, presss from both sides tight back when the earth clamp, can lift insulating bar off, has left operation space for the maintenance work of cubical switchboard cable chamber like this, has improved maintenance efficiency to a certain extent, has reduced the equipment power off time.
The utility model discloses an insulated operating rod is provided with torque sensor, makes the fastener and the tight degree of clamp of power failure equipment quantize. When an operator rotates the insulating operating rod to enable the wire clamp to clamp the cable head, the real-time torque value of the torque sensor on the insulating operating rod is observed, when the cable head is rotated to a certain torque value, the wire clamp is shown to clamp the cable head, and the condition that the grounding wire clamp does not completely clamp the cable head due to insufficient arm strength or experience of the operator and the grounding is unreliable can be effectively avoided.
The aforesaid is only the utility model discloses a preferred embodiment, and is not right the utility model discloses do any restriction, the all basis the utility model discloses any change that technical scheme's design made all should be contained within the protection scope.
Claims (5)
1. The utility model provides a earthing device suitable for cubical switchboard cable head, includes earth clamp, insulating bar and earth connection, its characterized in that:
the ground clamp comprises an arc-shaped tongue piece, a bolt through hole, a left worm wheel, a right worm wheel, a worm, limiting blocks, a fixing frame and a clamping head, wherein the left worm wheel and the right worm wheel are installed on the fixing frame, the tooth parts of the left worm wheel and the right worm wheel are one fourth of the circumference of the worm wheel, the limiting blocks are respectively arranged at two ends of the tooth parts of the left worm wheel and the right worm wheel and used for limiting the rotation angle of the worm wheels, the worm is arranged between the left worm wheel and the right worm wheel and is meshed with the left worm wheel and the right worm wheel, the thread direction of the worm is right-handed, when the worm rotates clockwise; the upper ends of the left worm wheel and the right worm wheel are respectively provided with an arc-shaped tongue piece, the two arc-shaped tongue pieces are opened or closed along with the rotation of the worm wheel, when the two arc-shaped tongue pieces are closed, the two arc-shaped tongue pieces are close to an O shape, and one of the two arc-shaped tongue pieces is provided with a bolt through hole connected with a grounding wire; the lower end of the worm is symmetrically provided with two horizontal clamping heads;
the insulating operating rod comprises a clamping sleeve, a head rod, an upper coupler, a torque sensor, a lower coupler, a tail rod and an anti-skidding insulating handle, the clamping sleeve is arranged above the head rod, the head rod is connected with an upper transmission shaft at one end of the torque sensor through the upper coupler, a lower transmission shaft at the other end of the torque sensor is connected with the tail rod through the lower coupler, and the anti-skidding insulating handle is arranged at the lower end of the tail rod;
the grounding wire is a copper stranded wire, an insulating layer wraps the outer surface of the copper stranded wire, one end of the grounding wire is provided with a wire clamp side copper nose connected with the bolt through hole in the arc-shaped tongue piece, and the other end of the grounding wire is provided with a grounding side copper nose used for being fixed on a grounding copper bar or other grounding electrodes in the switch cabinet.
2. The grounding device for cable heads of switch cabinets according to claim 1, characterized in that: the mount is rectangle frame construction, left side worm wheel and right worm wheel respectively the rotary type install the both ends at the mount, the worm sets up at the center of mount and left worm wheel and right worm wheel mesh mutually, and the lead angle of worm is less than the equivalent friction angle between the meshing wheel tooth, and the worm gear has reverse auto-lock nature, therefore the worm can only drive the worm wheel and rotate.
3. The grounding device for cable heads of switch cabinets according to claim 1, characterized in that: the two arc-shaped tongues are closed in a crossed and overlapped mode, so that cable heads with different diameters can be firmly clamped.
4. The grounding device for cable heads of switch cabinets according to claim 1, characterized in that: the side wall of the clamping sleeve is symmetrically provided with two J-shaped clamping grooves, the directions of hook parts of the two clamping grooves are opposite, and the clamping grooves are used for being matched and clamped with a clamping head at the lower end of the worm.
5. The grounding device for cable heads of switch cabinets according to claim 1, characterized in that: the anti-skid insulated handle is made of rubber with texture on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921952676.5U CN210926377U (en) | 2019-11-12 | 2019-11-12 | Earthing device suitable for cubical switchboard cable head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921952676.5U CN210926377U (en) | 2019-11-12 | 2019-11-12 | Earthing device suitable for cubical switchboard cable head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210926377U true CN210926377U (en) | 2020-07-03 |
Family
ID=71348353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921952676.5U Expired - Fee Related CN210926377U (en) | 2019-11-12 | 2019-11-12 | Earthing device suitable for cubical switchboard cable head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210926377U (en) |
-
2019
- 2019-11-12 CN CN201921952676.5U patent/CN210926377U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 Termination date: 20201112 |