Multi-drill-bit electric drill for construction

Abstract

The invention discloses a multi-drill-bit electric drill for construction. The multi-drill-bit electric drill comprises an electric drill body and a drill bit seat. The drill bit seat is arranged at the left end of the electric drill body and provided with a fixing ring. Drill bits are arranged in the fixing ring. A groove is formed in the electric drill body. A protective cover is arranged in the groove and provided with a graduated scale. A front handle is connected to the lower end of the electric drill body. A drill bit box is arranged in the front handle. A sealing cover is arranged at the lower end of the drill bit box. A slide rail is arranged at the right end of the electric drill body. A movable handle is connected to the lower end of the slide rail. A power line is connected to the lower end of the movable handle. The multi-drill-bit electric drill for construction has the advantages that multiple drill bits are mounted by the rotatable drill bit seat, free switching of the drill bits is achieved, holes of different sizes can be drilled, the electric drill is allowed to be convenient to use, construction efficiency is increased, and the electric drill is worthy of popularization.

Description

technical field [0001] The invention relates to the technical field of construction equipment, in particular to a construction multi-bit electric drill. Background technique [0002] The birth of the world's electric tools began with electric drills - in 1895, the German company Fein developed the world's first DC electric drill, which weighs 14 kg and has a cast iron shell, which can only drill 4 mm on steel plates hole. Then a three-phase power frequency (50Hz) electric drill appeared, but the motor speed failed to exceed 3000r / min. The working principle of the electric drill is that the motor rotor of the electromagnetic rotary or electromagnetic reciprocating small-capacity motor performs magnetic field cutting and works, and drives the operation through the transmission mechanism. The device drives the gear to increase the power of the drill bit, so that the drill bit scrapes the surface of the object and penetrates the object better. It is widely used in the reinforce...

AI Technical Summary

Problems solved by technology

Then a three-phase power frequency (50Hz) electric drill appeared, but the motor speed failed to exceed 3000r / min. The working principle of the electric drill is that the motor rotor of the electromagnetic rotary or electromagnetic reciprocating small-capacity motor performs magnetic field cutting and works, and drives the operation through the transmission mechanism. The device drives the gear to increase the power of the drill bit, so that the drill bit scrapes the surface of the object and penetrates the object better. It is widely used in the reinforcement of building beams, panels, columns, walls, etc., decoration, wall installation, brackets, railings, billboards, With the development of society, more and more building constructions use electric drills for the installation of air-conditioning outdoor units, guide rails, satellite receiver elevators, and steel structure workshops. However, only one drill bit can be used for traditional electric drills. , when faced with different drilling holes, the drill bit needs to be disassembled and replaced in order to continue working well, so a multi-bit electric drill for construction is designed

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