Power-off switching hammer drill tool

Abstract

A power-off switching hammer drill tool comprises a casing, a drilling component and a hammering component, a shifting component, a driving motor and a stopping component, wherein the drilling component and the hammering component are matched with the casing; the drilling component and the hammering component are in transmission fit with a driving motor through a transmission mechanism; the transmission mechanism comprises a transmission member, a nested gear set, a drilling driven gear, and a hammering driven gear; one end of the nested gear set is connected with the driving motor for transmission; the other end of the nested gear set is matched with the transmission member driven by the shifting component for shifting so as to achieve engaging movement with the drilling driven gear and the hammering driven gear; the stopping component comprises a stopping contact switch fixedly arranged in a knob body, a controller connected with the stopping contact switch and the driving motor through an electric wire, and a contact pad connected to the stopping contact switch circuit and arranged in a switching button. The tool of the design has the advantages of easy shifting, low equipment abrasion rate and safe use.

Description

technical field [0001] The invention relates to the field of hammer drill tools, in particular to a power-off switchable hammer drill tool. Background technique [0002] With the continuous development of electromechanical equipment, electric tools such as electric drills are more and more used in civil construction work because of their extremely high work efficiency and flexible working characteristics. At present, in order to punch holes on the surface of higher-strength concrete or harder building materials, more shiftable electric hammers or electric drills are now used for operations, and this shiftable punching tool is being used for many times. When switching between these gears, the switching is generally carried out with electricity, which causes the clutch and gears to still run even during the switching process, especially the collision between the high-speed running gears and the gears during the shifting process, and the meshing teeth After the collision with ...

AI Technical Summary

Problems solved by technology

At present, in order to punch holes on the surface of higher-strength concrete or harder building materials, more shiftable electric hammers or electric drills are now used for operations, and this shiftable punching tool is being used for many times. When switching between these gears, the switching is generally carried out with electricity, which causes the clutch and gears to still run even during the switching process, especially the collision between the high-speed running gears and the gears during the shifting process, and the meshing teeth After the collision with the meshing teeth, the wear and damage are serious, which affects the normal operation of the overall equipment. On the other hand, due to the rotation and collision between multiple parts such as clutches and gears during the shifting process, the shifting components are shifting gears. It is difficult to shift gears at the same time and the sense of blockage is serious, which is difficult to operate, and the drilling equipment is still in operation when shifting gears, the possibility of accidents is also high, and the risk factor is high

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