an electric hammer

Abstract

The invention discloses an electric hammer which comprises a chuck, a shell, an air cylinder assembly and a transmission assembly, wherein the air cylinder assembly and the transmission assembly are arranged in the shell. The side face of the shell is provided with a handle. The chuck comprises a chuck body, a tetragonal sleeve and a clamp cover. The air cylinder assembly comprises a cylinder body. A drill brush hole and a piston hole are formed in the front part and the rear part of the cylinder body respectively. A first step at the front portion of the cylinder body extends into the tetragonal sleeve. According to the electric hammer, a drill bit is inserted and then directly collides with an impact oscillator, and impact drilling is easier; the chuck is convenient to assemble, the drill bit is inserted into and pulled out directly and quickly through cooperation of steel balls and springs; by adjusting a connection structure between the cylinder body and an impact sleeve and a connection structure between the cylinder body and the chuck, the length of the air cylinder assembly is shorter compared with a traditional air cylinder assembly; through clamping of the steel balls, quick-wear parts are more convenient to disassemble, assemble and maintain, and the service life of the electric hammer is prolonged greatly; and furthermore, the hammering strength on a drill bush assembly of a punch hammer is improved by enlarging the hole diameter of the large piston hole, and the working efficiency of the electric hammer is improved greatly.

Description

technical field [0001] The invention relates to an electric hammer. Background technique [0002] At present, the electric hammers on the market have the following disadvantages: 1) There is a gap between the drill bit and the impactor, and it is necessary to force forward when punching the drill; 2) The chuck part adopts operations such as pressing, lifting, and pulling to position, and the replacement time is long. It is also relatively cumbersome; 3) The wearing parts such as the drill sleeve assembly need to be replaced in a special repair shop, and all the auxiliary parts such as the circlips and bearings connected to it need to be removed during the replacement, which is not convenient for daily maintenance; 4) The chuck The connection structure with the cylinder body is complicated, and the disassembly and assembly efforts are increased; 5) When in use, the impact force of the impact hammer is not strong enough, and the working efficiency cannot achieve the expected s...

AI Technical Summary

Problems solved by technology

[0002] At present, the electric hammers on the market have the following disadvantages: 1) There is a gap between the drill bit and the impactor, and it is necessary to force forward when punching the drill; 2) The chuck part adopts operations such as pressing, lifting, and pulling to position, and the replacement time is long. It is also relatively cumbersome; 3) The wearing parts such as the drill bushing assembly need to be replaced in a special repair shop, and all the auxiliary parts such as the circlips and bearings connected to it need to be removed during the replacement, which is not convenient for daily maintenance; 4) Chuck The connection structure with the cylinder body is complex, and the disassembly and assembly efforts are increased; 5) When in use, the hammer's hammering force is not strong enough, and the working efficiency cannot achieve the expected strength effect

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