CN111064117A - Overhead transmission line rat trap formula shunt subassembly - Google Patents
Overhead transmission line rat trap formula shunt subassembly Download PDFInfo
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- CN111064117A CN111064117A CN201911244013.2A CN201911244013A CN111064117A CN 111064117 A CN111064117 A CN 111064117A CN 201911244013 A CN201911244013 A CN 201911244013A CN 111064117 A CN111064117 A CN 111064117A
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- mousetrap
- transmission line
- overhead transmission
- mouse trap
- clamping
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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Abstract
The invention provides a rat trap type shunt assembly for an overhead transmission line, which comprises: the mouse trap comprises a base and two clamping arms, and each clamping arm is pivotally arranged on the base through a torsion spring; the mouse trap mounting tool comprises a mouse trap placing part, a first elastic piece and an operating part, wherein the mouse trap placing part is arranged on the operating part, and the first elastic piece is arranged in the mouse trap placing part; the mousetrap is placed in the mousetrap placing part, and the two clamping arms have mutually matched clamping positions and an opened opening position. The technical scheme of the invention effectively solves the problem of line safety accidents caused by heating in the power transmission line in the prior art.
Description
Technical Field
The invention relates to the technical field of power transmission line shunts, in particular to a mouse-shaped shunt assembly of an overhead power transmission line.
Background
When the load of a power grid is large, if the manufacturing process of the joint of the drainage wire and the hydraulic tension clamp of the tension tower of the overhead transmission line is poor, the drainage plate generates heat, and can reach more than 200 ℃ in serious cases, so that the line switching-off fault of the fused drainage wire is possibly caused, and the safe operation of the line is influenced.
Disclosure of Invention
The invention mainly aims to provide a rat trap type shunt assembly for an overhead transmission line, which aims to solve the problem of line safety accidents caused by heating in the transmission line in the prior art.
In order to achieve the above object, the present invention provides an overhead transmission line mousetrap type shunt assembly, comprising: the mouse trap comprises a base and two clamping arms, and each clamping arm is pivotally arranged on the base through a torsion spring; the mouse trap mounting tool comprises a mouse trap placing part, a first elastic piece and an operating part, wherein the mouse trap placing part is arranged on the operating part, and the first elastic piece is arranged in the mouse trap placing part; the mousetrap is placed in the mousetrap placing part, the two clamping arms are provided with mutually matched clamping positions and opened opening positions, and when the two clamping arms are positioned at the opening positions, the mousetrap is abutted against the first elastic piece.
Further, the outer wall of the clamping arm is provided with a mounting part, the mounting part is positioned between the upper side edge of the clamping arm and the lower side edge of the clamping arm, and the mounting part and the base are pivotally mounted together through a pivot shaft.
Furthermore, the mousetrap comprises a plurality of mousetraps which are communicated through a connecting wire.
Further, the clamping arm and the base are both conductors, and the connecting lead is arranged on the base.
Furthermore, the cross section of the clamping arm is arc-shaped, the extending direction of the clamping arm is consistent with the extending direction of the power transmission line, and the clamping space between the two clamping arms is matched with the power transmission line when the two clamping arms are positioned at the clamping positions.
Further, the mousetrap placing part comprises a mousetrap placing cup and two hooks, and the two hooks are arranged on two sides of the mousetrap placing cup.
Further, the first end of the hook is pivotally connected with the mousetrap placement cup, and the second end of the hook can be matched with the inner wall surface of the clamping arm to enable the clamping arm to be in the open position.
Further, the mousetrap placing part and the operating part are detachably connected.
Further, the operating part is an insulating operating rod.
Further, the first end of operating portion has the screw hole, and the mousetrap placing portion still includes connecting portion, and the first end of connecting portion links to each other with the bottom that the cup was placed to the mousetrap, and the second end and the screw hole of connecting portion pass through the bolt and link to each other.
Furthermore, the mousetrap placing part also comprises a mousetrap picking part, the mousetrap picking part is arranged on the mousetrap placing cup, and the mousetrap picking part can be matched with the mousetrap to take down the mousetrap.
Further, the part is taken to the mousetrap includes the mounting panel, the nut, second elastic component and screw rod structure, the upper portion at the mousetrap placing cup is connected vertically to the mounting panel, be provided with the via hole on the mounting panel, the screw rod structure includes the screw rod and sets up the piece of suppressing at the first end of screw rod, the screw rod is worn to set up in the via hole, the first end of screw rod is located one side that is close to the center of mousetrap placing cup of mounting panel, the second end of screw rod is located one side of keeping away from the center of mousetrap placing cup of mounting panel, the nut cooperatees with the second end of screw rod, the second elastic component supports to press between mounting panel and suppression piece.
Furthermore, in the direction from the second end of the screw rod to the first end of the screw rod, the upper surface of the pressing block is an inclined plane from high to low, and the lower surface of the pressing block is a plane.
Furthermore, the mousetrap picking parts comprise two mousetrap picking parts which are oppositely arranged on the mousetrap placing cup.
By applying the technical scheme of the invention, when the power transmission line generates heat or is likely to generate heat, the overhead power transmission line mousetrap type shunt assembly can be adopted, when the overhead power transmission line mousetrap type shunt assembly is installed, the mousetrap is placed in the mousetrap placing part, the two clamping arms are in the opening positions, the mouse is clamped and conveyed to the position near the power transmission line through the operation part, the power transmission line is positioned between the two clamping arms, then the power transmission line is pushed upwards by force, the power transmission line applies acting force to the lower side of the mousetrap, and at the moment, the two mousetraps are positioned in the clamping positions under the acting force of the torsion spring and clamp the power transmission line. The technical scheme of the invention effectively solves the problem of line safety accidents caused by heating in the power transmission line in the prior art.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of an overhead transmission line mousetrap-type shunt assembly according to the invention;
fig. 2 shows a schematic diagram of the operation of a snap trap of the overhead transmission line snap-trap assembly of fig. 1;
fig. 3 is a schematic diagram showing a matching structure of a mousetrap and a mousetrap placing part of the overhead transmission line mousetrap-type shunt assembly of fig. 1;
fig. 4 is a schematic structural diagram illustrating a structure in which a mousetrap of the overhead transmission line mousetrap-type shunt assembly of fig. 1 is placed on a mousetrap placing part;
fig. 5 shows a schematic structural view of a snap trap of the overhead transmission line snap-trap assembly of fig. 1;
fig. 6 shows a schematic structural view of a mousetrap placement part of the overhead transmission line mousetrap-type shunt assembly of fig. 1.
Wherein the figures include the following reference numerals:
10. a mousetrap; 11. a base; 12. a clamp arm; 20. a mousetrap installation tool; 21. a mousetrap placing part; 211. a mousetrap placement cup; 212. hooking; 213. a mousetrap picking part; 22. an operation unit.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
As shown in fig. 1 to 6, the rat-trap type shunt assembly for an overhead transmission line of the present embodiment includes: a snap trap 10 and a snap trap installation tool 20. The snap trap 10 includes a base 11 and two holding arms 12, and each holding arm 12 is pivotally disposed on the base 11 by a torsion spring. The snap trap installation tool 20 includes a snap trap placing portion 21, a first elastic member, and an operation portion 22, the snap trap placing portion 21 being provided on the operation portion 22, and the first elastic member being provided in the snap trap placing portion 21. The mouse trap 10 is placed in the mouse trap placing part 21, the two clamping arms 12 have mutually matched clamping positions and an opened position, and when the two clamping arms 12 are in the opened position, the mouse trap 10 is pressed against the first elastic piece.
By applying the technical scheme of the embodiment, when the power transmission line generates heat or is likely to generate heat, the overhead power transmission line mousetrap type shunt assembly can be adopted, when the overhead power transmission line mousetrap type shunt assembly is installed, the mousetrap 10 is placed in the mousetrap placing part 21, the two clamping arms 12 are located at the opening positions, the mousetrap 10 is sent to the position near the power transmission line through the operation part 22, the power transmission line is located between the two clamping arms 12, then the mousetrap 10 is pushed upwards with force, the power transmission line applies acting force to the lower side of the mousetrap 10, and at the moment, the two mousetraps 10 are located at the clamping positions under the acting force of the torsion springs and clamp the power transmission line. The technical scheme of this embodiment has solved the problem of the circuit incident that leads to because of generating heat among the transmission line among the prior art effectively.
As shown in fig. 1 and 2, in the solution of the present embodiment, the outer wall of the clamp arm 12 has a mounting portion between the upper side of the clamp arm 12 and the lower side of the clamp arm 12, and the mounting portion is pivotally mounted to the base 11 by a pivot shaft. The structure has lower processing cost and convenient operation. Two centre gripping arms 12 set up respectively in the relative both sides of base 11, and during the operation, when transmission line applyed the effort to the downside of centre gripping arm 12, centre gripping arm 12 can appear using the installation department as the rotation of axle, and two centre gripping arms 12 draw close each other and be in the clamping position under the effort of torsional spring. It should be noted that the clamping arm 12 and the base are connected by a pivot shaft, and the axis of the pivot shaft is perpendicular to the axis of the insulating operating rod.
As shown in fig. 2, in the technical solution of the present embodiment, the plurality of snap traps 10 includes a plurality of snap traps 10, and the plurality of snap traps 10 are communicated with each other through a connecting wire. Therefore, two ends of the connecting wire shunting the power transmission line are connected with the power transmission line through the mousetrap, so that the installation efficiency can be greatly improved, and the operation safety is improved. The number of the mousetraps 10 can be selected according to the requirement, in the technical scheme of the embodiment, two mousetraps 10 are adopted, and the two mousetraps 10 are communicated through a connecting wire. Specifically, the base 11 of the snap trap 10 has a connecting hole for connecting a wire, the end of the connecting wire extends into the connecting hole, and the connecting wire is firmly pressed against the base 11 by a wire pressing bolt.
As shown in fig. 1 and 2, in the solution of the present embodiment, the holding arm 12 and the base 11 are both conductors, and the connecting wire is provided on the base 11. The structure is convenient to set, the base 11 is easy to set the connecting hole of the connecting wire, the connecting wire and the base 11 are stable in connection, and the virtual connection phenomenon is not easy to occur. The conductor may be made of copper, aluminum, iron, or other metal.
As shown in fig. 1 and fig. 2, in the technical solution of this embodiment, the cross section of the clamping arm 12 is arc-shaped, the extending direction of the clamping arm 12 is the same as the extending direction of the power transmission line, and the clamping space between the two clamping arms 12 is adapted to the power transmission line when the two clamping arms 12 are in the clamping position. The 12-bit arc-shaped structure of the clamping arm enables the matching area of the clamping arm 12 and the power transmission line to be large, and therefore the matching effect of the clamping arm 12 and the power transmission line is good.
As shown in fig. 1, in the technical solution of the present embodiment, the mousetrap placing part 21 includes a mousetrap placing cup 211 and two hooks 212, and the two hooks 212 are both disposed on both sides of the mousetrap placing cup. The accommodating space in the mousetrap placing cup 211 is matched with the shape of the base 11 of the mousetrap 10, the hook 212 is convenient to be arranged and matched with the clamping arm 12, specifically, the end part of the hook 212 is of an open inclined structure, and therefore when the power transmission line abuts against the lower side of the clamping arm 12, the clamping arm 12 is easy to separate from the hook 212. The upper side of the holding arm 12 has an inclined surface inclined in a direction away from the axis of the insulating operating rod from the bottom up. The above structure allows the hook to be easily detached from the clamp arm 12. When the power transmission line exerts acting force on the lower side of the mousetrap 10, the mousetrap 10 presses the first elastic part downwards, and the mousetrap 10 moves downwards for a certain distance by compressing the first elastic part, so that the mousetrap 10 is easier to separate from the hook.
As shown in fig. 1, in the solution of the present embodiment, a first end of the hook is pivotally connected to the snap trap placing cup, and a second end of the hook can cooperate with an inner wall surface of the holding arm 12 to make the holding arm 12 in the open position. This makes the operation of the hook more flexible.
As shown in fig. 1, in the present embodiment, the snap trap placing section 21 and the operation section 22 are detachably connected. The above structure makes the mousetrap placing part 21 and the operation part 22 easy to store and transport. When the mouse trap placing part 21 and the operation part 22 are used, the mouse trap placing part 21 and the operation part 22 can be connected together, and when the mouse trap placing part is stored and transported, the mouse trap placing part 21 and the operation part 22 are detached, so that the space can be saved, and the storage and the transportation are convenient.
As shown in fig. 1, in the present embodiment, the operation portion 22 is an insulating operation rod. Such an operating part makes the operator safer when using. Specifically, the insulating operation rod is of a telescopic structure, so that the insulating operation rod is relatively high in universality and can be operated corresponding to power transmission lines of different heights.
As shown in fig. 1, in the technical solution of this embodiment, the first end of the operating portion 22 has a threaded hole, the mousetrap placing portion 21 further includes a connecting portion, the first end of the connecting portion is connected to the bottom of the mousetrap placing cup, and the second end of the connecting portion is connected to the threaded hole through a bolt. The connecting part is of an open spanner structure, and when the bolt is connected, the bolt enters the open spanner structure through the opening of the connecting part. Such structure easy dismounting.
As shown in fig. 1 to 6, in the present embodiment, the mousetrap placing section 21 further includes a mousetrap removing section 213, the mousetrap removing section 213 is disposed on the mousetrap placing cup 211, and the mousetrap removing section 213 can cooperate with the mousetrap 10 to remove the mousetrap 10. The arrangement of the mousetrap removing part 213 can save time and labor when an operator removes the mousetrap 10, and can also ensure the safety of the operator.
As shown in fig. 3 to 6, in the technical solution of this embodiment, the mousetrap picking portion 213 includes a mounting plate, a nut, a second elastic member and a screw rod structure, the mounting plate is vertically connected to the upper portion of the mousetrap placement cup, a through hole is provided on the mounting plate, the screw rod structure includes a screw rod and a pressing block disposed at a first end of the screw rod, the screw rod is disposed in the through hole, the first end of the screw rod is located on one side of the mounting plate close to the center of the mousetrap placement cup, a second end of the screw rod is located on one side of the mounting plate away from the center of the mousetrap placement cup, the nut is matched with a second end of the screw rod, and the second elastic member is pressed between the mounting plate and the. The structure is convenient to operate. When the mouse trap installing tool is used, the nut is loosened, the screw rod structure moves towards the direction close to the center of the mouse trap placing cup 211 under the action force of the second elastic piece, when the pressing block is located at the upper portion of the containing space of the mouse trap placing cup 211, the mouse trap placing portion is conveyed to the mouse trap 10, the mouse trap 10 presses the pressing block, the pressing block presses the second elastic piece and moves towards the second end of the screw rod to avoid the mouse trap 10 until the mouse trap 10 enters the mouse trap placing cup 211, the pressing block presses on the upper surface of the base 11 of the mouse trap 10 at the moment, the mouse trap installing tool 20 is pulled downwards by force, and the mouse trap installing tool 20 drives the mouse trap 10 to be separated from a power transmission line downwards. It should be noted that, when the snap traps 10 are installed, the pressing block needs to avoid the upper portion of the accommodating space of the snap trap placing cup 211.
As shown in fig. 3 to 6, in the technical solution of the present embodiment, in the direction from the second end of the screw to the first end of the screw, the upper surface of the pressing block is an inclined surface from high to low, and the lower surface of the pressing block is a plane. The lower surface of the mouse trap placing cup is arc-shaped, and the upper surface of the mouse trap placing cup is a plane. The upper surface of the pressing block is an inclined surface and is matched with the lower surface of the mousetrap 10, so that the mousetrap 10 can easily enter the mousetrap placing cup 211. The upper surface of the base 11 is a plane and is matched with the plane of the lower surface of the pressing block, so that the action areas of the base 11 and the pressing block are larger.
As shown in fig. 3 to 6, in the technical solution of the present embodiment, the two mousetrap removing portions include two mousetrap removing portions, and the two mousetrap removing portions are oppositely disposed on the mousetrap placing cup. The structure enables the stress of the mousetrap 10 to be balanced when the mousetrap is picked up.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (14)
1. The utility model provides an overhead transmission line mousetrap formula shunt subassembly which characterized in that includes:
the mouse trap (10) comprises a base (11) and two clamping arms (12), wherein each clamping arm (12) is pivotally arranged on the base (11) through a torsion spring;
the mouse trap mounting tool (20) comprises a mouse trap placing part (21), a first elastic piece and an operating part (22), wherein the mouse trap placing part (21) is arranged on the operating part (22), and the first elastic piece is arranged in the mouse trap placing part (21);
the mouse trap (10) is placed in the mouse trap placing part (21), the two clamping arms (12) are provided with a clamping position and an opened position which are matched with each other, and when the two clamping arms (12) are located at the opened position, the mouse trap (10) is pressed against the first elastic piece.
2. The overhead transmission line mousetrap shunt assembly of claim 1 wherein the outer wall of the gripping arm (12) has a mounting portion between the upper side of the gripping arm (12) and the lower side of the gripping arm (12), the mounting portion being pivotally mounted with the base (11) by a pivot axis.
3. The overhead transmission line mousetrap-type shunt assembly according to claim 2, wherein the plurality of mousetraps (10) are connected with each other through a connecting wire.
4. Overhead transmission line mousetrap assembly according to claim 3, characterized in that the gripping arm (12) and the base (11) are both conductors, the connecting wire being arranged on the base (11).
5. The overhead transmission line mousetrap shunt assembly according to claim 2, characterized in that the cross-section of the clamping arm (12) is arc-shaped, the extension direction of the clamping arm (12) coincides with the extension direction of the transmission line, and the clamping space between the two clamping arms (12) fits the transmission line when the two clamping arms (12) are in the clamping position.
6. The overhead transmission line mousetrap shunt assembly according to any one of claims 1-5, wherein the mousetrap placement portion (21) comprises a mousetrap placement cup (211) and two hooks (212), both hooks (212) being arranged on both sides of the mousetrap placement cup (211).
7. The overhead transmission line mousetrap shunt assembly of claim 6, wherein a first end of the hook (212) is pivotally connected to the mousetrap placement cup and a second end of the hook (212) is cooperable with an interior wall surface of the clamping arm (12) to hold the clamping arm (12) in the open position.
8. The overhead transmission line mousetrap shunt assembly according to claim 7, wherein the mousetrap placement part (21) and the handling part (22) are detachably connected.
9. The overhead transmission line mousetrap shunt assembly of claim 7 wherein the handling portion (22) is an insulated handling rod.
10. The overhead transmission line mousetrap shunt assembly according to claim 9, wherein the first end of the operating portion (22) has a threaded hole, the mousetrap placing portion (21) further comprises a connecting portion, the first end of the connecting portion is connected to the bottom of the mousetrap placing cup, and the second end of the connecting portion is connected to the threaded hole through a bolt.
11. The overhead transmission line mousetrap-type shunt assembly according to claim 6, wherein the mousetrap placement portion further comprises a mousetrap picking portion (213), the mousetrap picking portion (213) is arranged on the mousetrap placement cup (211), and the mousetrap picking portion is cooperable with the mousetrap (10) to take down the mousetrap (10).
12. The overhead transmission line mousetrap shunt assembly of claim 11, wherein the mousetrap removing portion comprises a mounting plate, a nut, a second elastic member and a screw structure, the mounting plate is vertically connected to the upper portion of the mousetrap placement cup, a through hole is formed in the mounting plate, the screw structure comprises a screw and a pressing block arranged at a first end of the screw, the screw is arranged in the through hole in a penetrating mode, the first end of the screw is located on one side, close to the center of the mousetrap placement cup, of the mounting plate, the second end of the screw is located on one side, away from the center of the mousetrap placement cup, of the mounting plate, the nut is matched with the second end of the screw, and the second elastic member is pressed between the mounting plate and the pressing block.
13. The overhead transmission line mousetrap shunt assembly of claim 12, wherein the upper surface of the pressing block is a slope from high to low in a direction from the second end of the screw to the first end of the screw, and the lower surface of the pressing block is a plane.
14. The overhead transmission line mousetrap shunt assembly of claim 12 wherein the mousetrap removal section comprises two mousetrap removal sections oppositely disposed on the mousetrap placement cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244013.2A CN111064117A (en) | 2019-12-06 | 2019-12-06 | Overhead transmission line rat trap formula shunt subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244013.2A CN111064117A (en) | 2019-12-06 | 2019-12-06 | Overhead transmission line rat trap formula shunt subassembly |
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| Publication Number | Publication Date |
|---|---|
| CN111064117A true CN111064117A (en) | 2020-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911244013.2A Pending CN111064117A (en) | 2019-12-06 | 2019-12-06 | Overhead transmission line rat trap formula shunt subassembly |
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| Country | Link |
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| CN (1) | CN111064117A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115953941A (en) * | 2022-12-02 | 2023-04-11 | 贵州电网有限责任公司 | Line warning signboard |
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| CA2408200A1 (en) * | 2002-10-15 | 2004-04-15 | Ray C. Richter | Static bonding clamp with continuity indicators |
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| CN115953941A (en) * | 2022-12-02 | 2023-04-11 | 贵州电网有限责任公司 | Line warning signboard |
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Application publication date: 20200424 |