Pulley gear for protecting high-strength insulating rope during transmission line construction

• Main Authors: WANG JIANPING, GAO SHIFA, GUAN NING, WANG YUEHONG, HU YANJUN, ZHANG YONG, SONG SHUTING
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2010
• Subjects: CAPSTANS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; HAULING; HOISTING; HOISTS; INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINEDOPTICAL AND ELECTRIC CABLES OR LINES; LIFTING; PERFORMING OPERATIONS; TACKLES, e.g. PULLEY BLOCKS; TRANSPORTING; WINCHES

The utility model relates to a transmission line construction device, in particular to a pulley gear for protecting a high-strength insulating rope during the transmission line construction, which minimizes the damage of the high-strength insulating rope and prolongs the service life during the paying-off construction of leads and earth wires. The pulley gear comprises pulleys and a pulley framework, wherein the pulley framework has two layers, each layer of the pulley framework is provided with three pulleys which are shaped like a regular triangle, the triangle shape formed by the three pulleys at the first layer has an angle of 180 degrees with the triangle shape formed by the three pulleys at the second layer, and each layer of the pulley framework is provided with a part for opening the triangle shape of the pulleys. The pulley gear has the advantages that the rolling friction of the high-strength insulating rope in the pulleys can be ensured in any case, the high temperature caused by sliding friction c