| 摘要 |
<p>Clamp for securing accessory elements to metal pillars with a double- flange that comprises two tightening jaws mounted opposite each other on a support piece and actuating means for displacing at least one of said jaws to grip tightly the opposite longitudinal edges of a flange. The support piece is provided with solidly joined retaining means, displaced to one side and preferably fitted with two essentially horizontal flat plates, superimposed at a short distance and provided with respective aligned circular perforations, forming a vertical axis perforation designed to retain an accessory element that crosses it and/or to hold the support for an accessory element. A system for securing the perches of safety devices for operators to a metal pillar comprises a pair of clamps such as the one described and a support for the perch.</p> |
