| 摘要 |
The invention relates to a ground clamp for a welding apparatus. The ground clamp comprises a fastening screw rotatable in a body and a counter jaw formed in the body, which fastening screw and jaw together form a screw clamp by means of which the ground is fastened to a workpiece. The ground clamp further comprises a connection for fastening a ground cable to the body. Known ground clamps have structural disadvantages on account of which they are not reliable in operation and do not conduct sufficiently current in proportion to their size. The disadvantages are due to the fact that the contact between the workpiece and the ground cable is not sufficiently good to guarantee an even flow of the electric current. For the elimination of these disadvantages the connection of the ground cable comprises a cavity formed in the counter jaw perpendicular to the direction of the movement of the fastening screw, and fastening means which lock both a naked part of the ground cable and a cable insulation in the cavity.
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