Production welding method for support rebar trapezoid beam of laneway

Abstract

A production welding method for a support rebar trapezoid beam of a laneway is characterized in that round straight rebar long beams are placed in a guide rail by a long beam charging device; round straight rebar short ribs are arranged in a positioning slot of the charging guide rail; the charging guide rail is moved under the action of a servo motor; when a welding point arrives between a left side electrode and a right side electrode, the charging guide rail is stopped, an upside press block compresses the round straight rebar short ribs, and the left side electrode extending from a cylinder at the rear left side and the right side electrode extending from a cylinder at the right side compress two sides of the round straight rebar long beams; when the electrodes are conducted, strong instant current generated between the electrodes at the left and right sides generates resistance heat under the action of the resistance of a rebar, so the welding point is melted to form a melting pool, after the circuit is disconnected and the welding point is cooled and solidified, the cylinders at left and right sides are returned in sequence, and the upside press bock is collected, thus finishing the welding of the round straight rebar short ribs; then the welding of the unwelded round straight rebar short ribs is finished in sequence. The production welding method is simple, the welding quality is reliable and the production efficiency is greatly improved.

Description

technical field [0001] The invention relates to an electric welding method for roadway supporting reinforced trapezoidal beams, in particular to a resistance butt welding production method for coal mine roadway supporting reinforced trapezoidal beams. Background technique [0002] Existing reinforced trapezoidal beams for coal mine roadway support are widely used in coal mining roadway support due to simple processing and low cost. However, in the welding production process, manual arc welding is mostly used, and the equipment is simple, and cracks, pores, slag inclusions, incomplete fusion and incomplete penetration defects occur during welding, and there are serious safety hazards in welding quality, which greatly reduces The strength and shape of the trapezoidal beam are reduced, and the production efficiency is extremely low, especially when it is used for coal mining roadway support, due to the insufficient strength and shaping of the welded part of the reinforced trape...

AI Technical Summary

Problems solved by technology

However, in the welding production process, manual arc welding is mostly used, and the equipment is simple, and cracks, pores, slag inclusions, incomplete fusion and incomplete penetration defects occur during welding, and there are serious safety hazards in welding quality, which greatly reduces The strength and shape of the trapezoidal beam are reduced, and the production efficiency is extremely low, especially when it is used for coal mining roadway support, due to the insufficient strength and shaping of the welded part of the reinforced trapezoidal beam, the welding point falls off, resulting in coal mining in the coal mine roadway. During the coal mining process, the top of the roadway collapsed, which brought great loss of life and property to coal mining. Therefore, it is urgent to design an energy-saving, environmentally friendly, and efficient welding equipment for roadway support reinforced trapezoidal beams. For roadway support trapezoidal beams The advanced production welding method makes the production of welded trapezoidal beams with steel bars for coal mine roadway support meet the support requirements in the mining process

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