Multi-drill-bit electric drill for construction

A multi-bit, construction technology, applied in the direction of drilling/drilling equipment, portable drilling rigs, maintenance and safety accessories, etc., can solve the problems of increasing the power of the drill bit, failure of the motor speed to break through, scraping, etc., to improve efficiency, Good use value and compact device structure

CN106270644AInactive Publication Date: 2017-01-04陈泳东
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-01-04
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment

[0016] see figure 1 and figure 2 , the present invention provides a technical solution: a multi-bit electric drill for construction, including an electric drill body 1 and a drill seat 2, the drill seat 2 is arranged at the left end of the electric drill body 1, and a fixed ring 3 is arranged on the drill seat 2, and inside the fixed ring 3 A drill bit 4 is provided, a groove 5 is provided on the main body 1 of the electric drill, a protective cover 6 is provided in the groove 5, a scale 7 is provided on the protective cover 6, a front handle 8 is connected to the lower end of the electric drill main body 1, and a front handle 8 There is a drill bit box 9 inside, the lower end of the drill bit box 9 is provided with a sealing cover 10, the right end of the electric drill body 1 is provided with a sliding rail 11, the lower end of the sliding rail 11 is connected with a movable handle 12, and the lower end of the movable handle 12 is connected with a power connection 13. The ...