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Abstract

The invention provides a novel grounding device, comprising a grounding terminal and a grounding wire connecting terminal, wherein the grounding terminal comprises a terminal body and an elastic contact, one end of the elastic contact is elastically connected to the terminal body by an elastic device; the terminal body is provided with a fixing member and a limiting member; the grounding wire connecting terminal comprises a grounding wire conductive member, one end of the grounding wire conductive member is electrically connected to the grounding wire; the grounding wire conductive member is provided with a fixing-member fitting member and a limiting-member fitting member; the fixing member is fixedly connected with the fixing-member fitting member, and the limiting member is in a limitedfit with the limiting-member fitting member. The application of the technical solution may improve the installation effect of the grounding wire, and the efficiency of the safety control and assemblyand disassembly, and further reduce the physical strength and mental stress when the operator installs and detaches the grounding wire.

Description

technical field [0001] The invention relates to the field of grounding equipment for power outage operations, in particular to a grounding device. Background technique [0002] In the case where the power grid needs power outage operations, in order to prevent residual voltage, sudden mis-send power, induction electricity and other dangerous factors, and ensure the personal safety of operators, it is required to install a grounding wire sufficient to ensure safety within the scope of work, and grounding is also required The installation of the line should be in good contact and the connection should be reliable. [0003] In terms of the installation and disassembly of traditional grounding wires, there are mainly the following specific disadvantages: [0004] 1. The five-proof lock cannot realize the locking of the grounding wire; the traditional installation of the grounding wire is usually realized by screwing a wing nut to a grounding wire contact on a grounding bolt. S...

AI Technical Summary

Problems solved by technology

[0004] 1. The five-proof lock cannot realize the locking of the grounding wire; the installation of the traditional grounding wire is usually achieved by screwing a wing nut to a grounding wire contact on a grounding bolt.

Since there is still a free travel between the grounding bolt and the five-proof lock, the five-proof lock can only prevent the grounding wire from being taken out, but cannot prevent the grounding wire from being loosened and cannot guarantee reliable grounding.

[0005] 2. The reliability of grounding is poor against the influence of external force: Since the contact head of the grounding wire is screwed through the wing nut, and there is still a free travel between the grounding bolt and the five-proof lock, when the grounding wire is subjected to external force swing (or personnel In case of accidental contact), the wing nut thread is easy to loosen, so that the grounding wire is not compacted enough, and the contact resistance increases, resulting in the control of the grounding resistance of the grounding wire cannot be guaranteed. Once the grounding end is loose, the installation of the grounding wire It is useless and seriously threatens the personal safety of operators

[0006] 3. The effective contact area of ​​the ground terminal is small: because the traditional form of screwing a ground wire contact head through a wing nut on a ground bolt is a hard pressure contact form, its contact resistance is in the form of surface contact, and the effective contact area It is small and easily affected by the flatness of the contact surface of the grounding bolt and the grounding wire contact, the corrosion situation and the tightening force of the wing nut, which makes it difficult to control the grounding resistance. For some grounding bolts with serious corrosion and the tightening force of the wing nut If it is not enough, the installation of the grounding wire is just a decoration.

[0007] 4. The operation time of grounding is long and difficult: in the traditional grounding wire installation operation process, to install the grounding end of the grounding wire, it is necessary to unscrew the wing nut on the grounding bolt with a wrench, because the bolt has many threads It is long and needs a wrench to cooperate. It takes a long time to unscrew the butterfly nut, and then put on the ground end of the ground wire, as well as the spring washer and metal gasket on the ground bolt, and then use a wrench to tighten the butterfly nut. The nut is screwed into the long bolt thread, and the tightening operation is done. This process repeats the unscrewing process, which takes a long time. The final tightening operation strength often requires a certain amount of experience, otherwise it is easy to cause insufficient tightening force or The ears on both sides of the wing nut are deformed or even damaged

These cumbersome operations with some experience coefficients lead to longer operation time

[0008] The grounding operation is a routine operation. It is necessary to perform the grounding operation in the occasion where power failure is required. Since the traditional grounding operation takes a long time and is difficult to operate, and requires a certain amount of experience, the tightening force of the wing nut must be just right. If the force is too small, the pressing force will be insufficient, and if the force is too large, it will easily cause damage to the wing nut. Under the background of strict control of operation time and power outage operation time, such an operation will inevitably increase the physical exertion and mental burden of the operator. , while increasing the irritability and mental tension of the personnel for the grounding operation

[0009] 5. The standardization and consistency of the grounding operation is not good: due to the need to master the experience mode of tightening force in the traditional grounding operation process, it is difficult to guarantee the standardization and consistency of the grounding operation for personnel with different work experience and work attitudes

[0010] 6. The maintenance of the fixed grounding terminal is difficult: because the traditional fixed grounding terminal is welded on the grounding conductor, and ordinary steel bolts are often used, and they are made of non-stainless steel, the gasket, spring washer and wing nut are screwed together, which is easy Rust due to the influence of wind and rain, once rusted, the grinding operation of the contact surface of the grounding bolt is difficult, and the thread of the grounding bolt is easily damaged during grinding, resulting in rotten teeth and affecting the tightening operation

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