Conductive cross arm made of all-aluminum alloy profile

Abstract

The invention relates to a conductive cross arm made of an all-aluminum alloy profile. Most of the existing conductive cross arms have the defects such as complex processing process, long period, large weight and the like and are relatively high in requirements on the pressures of an electrode lifting cylinder and a hydraulic circuit. A core tube of a cavity of a cross arm body of the conductive cross arm is internally provided with an electrode clamping and releasing device, the front end of the electrode clamping and releasing device is protruded out of the cross arm body and provided with a copper chuck and a water-cooled holding ring, the core tube inside the cross arm body, side plates at the periphery of the cross arm body and rib plates in the middle of the cross arm body are respectively made of an aluminum alloy profile and are respectively of a one-step extrusion molded structure; the core tube is tangent with a pair of opposite side plates, and the rib plates are arranged between the core tube and the other pair of opposite side plates; the front and rear ends of the cross arm body are respectively provided with a copper-aluminum composite plate. The conductive cross arm provided by the invention is made of a hot extrusion molded aluminum alloy profile instead of a copper-steel composite plate, an aluminum alloy plate and the like with complex welding requirements so as to have the advantages such as light whole weight, attractive appearance, no need of welding, high strength, corrosion resistance, short manufacturing period, high cost performance and the like.

Description

technical field [0001] The invention belongs to the technical field of metallurgical industrial equipment, and in particular relates to an all-aluminum alloy profile conductive cross arm. Background technique [0002] The conductive cross arm of the existing electrode lifting mechanism of the electric arc furnace has two types of copper-steel composite plate structure and aluminum alloy plate welding structure. The conductive cross arm of the copper-steel composite plate is a rectangular cross-section: the interior is a carbon steel seamless core tube, and the periphery of the rectangle is a copper-steel composite plate (outer copper and inner steel). Steel plate welding, welding from inside to outside during processing, after the internal steel is welded, test the water pressure, and then weld the outer copper plate after welding, and then test the water pressure and polish after welding; the conductive cross arm of the aluminum alloy plate is also a rectangular cross-sect...

AI Technical Summary

Problems solved by technology

Both structures have defects such as cumbersome processing, long cycle time, heavy weight, and poor appearance quality. They require high pressure on the electrode lifting cylinder and hydraulic circuit, which increases their cost and reduces the sensitivity of the electrode lifting mechanism.

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