<article class="subdiv"> <header id="titre" class="subdiv"> <h1>How to use a winch with pulley or pulley block</h1> </header> <div id="pdfdata" class="subdiv"> <div style="display:inline-block;width:20%;"> <a href="https://it4v7.interactiv-doc.fr/html/huchez_catalogue_en_1069/rna/page/96"><img style="width:100%;" src="./thumbs/96.jpg"></a> </div> </div> <nav id="breadcrumb"> <p>Vous êtes ici : </p> </nav> <main> <p>x ROPES x Use with pulley or pulley block 3t 3t Principle of reeving 2 falls 2 brins 3t 3t 2t 2t 1 fall 1 brin 2t 2t 1t 1t 1t 1t 1t 1t 1t 1t 1t 1t treuil 1t 1 t winch treuil 1t 1 t winch 1t 2t Tambour rainuré Grooved drum R Smooth drum Tambour lisse R x Deflection angle = 1.5 </p><p>max on smooth drum = 2 max on grooved drum In practice the minimum distance D must be D min = 20 x L 2 D Angle à Angle maximum to 2 max 2 ' 2 to 1 à 1 30 1 à 1 30 t o ' Angle à Angle maximum 1 to 1 30 max ' 1 à 1 30 D D L R' L R' An excessive deflection angle causes Tests made by Stuttgart University indicate the following shortening of the rope life according to the slant angle Longevity factor Deflection angle 1 0.9 </p><p>0.75 </p><p>0.70 </p><p>0.67 </p><p>0 1 2 3 4 Dangerous rope winding Fast wear of the groove and the rope Excessively tight winding on the drum or overlapping GENERAL GENERAL 96 96 </p> </main> <aside> <ul> <li><a href='https://www.huchez.com/interactive-catalog/'>Interactive digital catalogue HUCHEZ 2025 - Winches and Lifting for professionals</a></li> </ul> </aside> <footer> <table width="100%"> <tr> <td width="100%"><a href="http://www.interactiv-technologies.com/interactiv-doc">Interactiv' Doc</a></td> </tr> </table> <ul> <li><a href="./sitemap.html">Plan du site</a></li> </ul> </footer> </article>