A grounding device and grounding method for an electric welding machine

Abstract

The invention discloses a grounding device and a grounding method for electric welding machines, which belong to the field of grounding protection for electric welding machines. The device includes a welding part, a lower grounding electrode is fixedly arranged on the welding part, and a copper sheet is arranged on the lower grounding electrode , the copper sheet is provided with an upper grounding electrode, and the lower grounding electrode, the copper sheet and the upper grounding electrode are respectively provided with a plurality of symmetrical threaded holes, and the lower grounding electrode, the copper sheet and the upper grounding electrode are connected by screws Fixed connection; the upper end surface of the upper grounding electrode is fixedly provided with a threaded column, the threaded column is sleeved with a grounding terminal, and the threaded column above the grounding terminal is provided with a nut. The grounding method based on the grounding device for the electric welding machine provided by the invention can realize the reliable grounding of the electric welding machine and prevent serious safety hazards caused by sparking.

Description

technical field [0001] The invention relates to the field of grounding protection for electric welding machines, in particular to a grounding device and a grounding method for electric welding machines. Background technique [0002] Ordinary electric welding machines are generally equipped with ground wire clamps. In actual situations, due to the thickness, shape, and size of the welded workpieces are too small, the ground wire clamps have no place to clamp, and the welded workpieces have to be welded with steel bars first. Put the grounding head on, and then clamp the grounding clamp on the steel bar for welding. This kind of welding method has the following problems: [0003] When the ground clamp clamps the workpiece to be welded, the contact area of ​​the clamp point is not large enough, and the welding current is usually between 70A-200A. Under the action of high current, the grounding clip will heat up, deform, change color and oxidize, making the service life of the...

AI Technical Summary

Problems solved by technology

[0005] The exposed part of the grounding wire end will generate a high temperature, which will cause the exposed part of the grounding wire to overheat, blacken and oxidize, which will cause the grounding wire to become shorter and shorter during long-term use, and the loss will increase

[0006] There are many potential safety hazards in the conventional grounding clamp connection method, and there is an urgent need for a new grounding device and method suitable for electric welding machines

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