A loose-proof universal device for electric testing and grounding of cables

Abstract

The present invention relates to the field of power tools and provides a loose-proof universal device for electric testing and grounding of cables which includes a wire clamping mechanism, an earthingelement and an insulating shell. The wire clamping mechanism comprises a wire clamping mechanism body and an anti-loosening bolt assembly, the anti-loosening bolt assembly includes a bolt and an anti-skid pressing plate, the surface of the bolt in contact with the anti-skid pressing plate is respectively provided with a first check helical tooth and a second check helical tooth, the top pressurepart of the anti-skid pressing plate is provided with an anti-skid structure, the wire clamping mechanism body is provided with a static chuck and a threaded hole which are oppositely arranged, the bolt is threadedly connected with the threaded hole and faces the static chuck so as to be able to cooperate with the static chuck to clamp the bare wire, the earthing member is fixedly connected with the wire clamping mechanism, and the earthing member is provided with an earthing part which is convenient for connecting the earthing equipment. The anti-skid structure restricts the rotation of the anti-skid pressing plate relative to the cable, and the engagement of the second check helical tooth and the first check helical tooth prevents the bolt from rotating opposite to the anti-skid pressingplate, thereby ensuring that the bolt is not loosened.

Description

technical field [0001] The invention relates to the field of electric tools, in particular to a universal device for anti-loosening cable electric testing and grounding. Background technique [0002] At present, when performing power grid maintenance, the power supply system in the area where the maintenance line is located is first shut down, and then the maintenance personnel work at heights to carry out maintenance without performing anti-falling power supply treatment. This method cannot guarantee the safety of construction personnel, because overhead cables It will inevitably be connected to the household, and some users (such as schools, shopping malls, factories, etc.) will install generators to ensure normal power supply during power outages without affecting the normal operation of electrical appliances. The phenomenon that the main line is still charged due to the overhead main line, if the construction personnel cut off the power supply system on the main line, wi...

AI Technical Summary

Problems solved by technology

[0002] At present, when performing power grid maintenance, the power supply system in the area where the maintenance line is located is first shut down, and then the maintenance personnel work at heights to carry out maintenance without performing anti-falling power supply treatment. This method cannot guarantee the safety of construction personnel, because overhead cables It will inevitably be connected to the household, and some users (such as schools, shopping malls, factories, etc.) will install generators to ensure normal power supply during power outages without affecting the normal operation of electrical appliances. The phenomenon that the main line is still charged due to the overhead main line, if the construction personnel cut off the power supply system on the main line, without anti-falling power supply treatment, rashly carry out maintenance, there will be great safety hazards, Some maintenance personnel even do not perform grounding treatment at all in order to act efficiently, which threatens their life safety. Therefore, it is very important to prevent the power supply from falling down on the cable. First, strip a section of the cable insulation sheath Form the bare wire part, ground the wire at the bare wire part to prevent power supply from falling down, but the long-term exposure of the cable will inevitably lead to safety hazards such as fire, electric shock, etc., and it is very troublesome to strip the cable and ground the cable every time the circuit is repaired, so it is urgently needed A cable electric test grounding device that can be conveniently grounded. Some cable electric test grounding devices have been designed in the prior art, but the bolts used to clamp the bare cable wires of these devices will loosen after a long time, especially when there is a lot of grease Or in the environment of high-frequency vibration, the bolt connection is more likely to loosen, which will cause the clamping mechanism to clamp the bare wire of the cable unstable or even loosen, causing the corresponding cable electrical test grounding device to fail to work normally

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