Carbon brush current collectors, often simply called crane current collectors, are a core component of the power supply system for bridge cranes. Installed on the moving parts of the crane (such as the trolley or main crane), they continuously and safely transmit electrical energy from an external power source to various electrical devices on the crane (such as the main hoisting motor, the main crane traveling motor, and the trolley traveling motor) by maintaining sliding contact with a conductive conductor rail (or sliding contact line) fixed to the crane structure.
Basic working principle: Carbon brushes (usually made of graphite or a composite material of metal and graphite) are pressed against the surface of the conductive conductor rail under spring pressure. When the crane moves, the carbon brushes slide along the conductor rail, forming a dynamic conductive path, thus achieving mobile power supply.
As one of the leading enterprises in China's crane industry, Weihua's products are renowned for their reliability, standardization, and comprehensive after-sales service. The carbon brush current collectors used in Weihua bridge cranes are typically designed and selected to high standards.
Current collectors supplied by or recommended by Weihua typically offer high-quality carbon brushes:
Materials: They often utilize metal-graphite composite materials (such as copper-graphite), which ensure good conductivity while possessing high mechanical strength and wear resistance, resulting in a longer service life.
Design: Carbon brushes usually feature a multi-blade parallel or interchangeable dual-head design, increasing the contact area, evenly distributing wear, and extending replacement intervals.
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