Explosion-proof grinder

Abstract

The invention relates to an explosion-proof grinding machine. The explosion-proof grinding machine comprises a workbench, a grinding wheel, a main shaft, an outer explosion-proof shield, an inner explosion-proof rotary shield, a stroke switch, a jacking mechanism and a supporting mechanism, wherein each of two protective discs of the inner explosion-proof rotary shield is in the shape of a partial arc; an arc-shaped guide rail groove is arranged in each of the two protective discs; the circular centre of each arc-shaped guide rail groove is superposed with the axis line of the main shaft; each arc-shaped guide rail groove of the inner explosion-proof rotary shield forms rotation connection with the supporting mechanism; the supporting mechanism is arranged on the inner top of the outer explosion-proof shield; the jacking mechanism is jacked on the arc-shaped disc surface of the inner explosion-proof rotary shield; when a retainer of the inner explosion-proof rotary shield rotates along the main shaft to contact with the workbench, the jacking mechanism just contacts with the rear end part of the arc-shaped disc surface of the inner explosion-proof rotary shield; the stroke switch is arranged on the rear part of the outer explosion-proof shield; and a contact of the stroke switch contacts with the rear end part of the arc-shaped disc surface of the inner explosion-proof rotary shield. The explosion-proof grinding machine disclosed by the invention is convenient to assemble and maintain, simple in structure, and low in production cost.

Description

technical field [0001] The invention relates to an explosion-proof grinder, which belongs to the technical field of electric tools. Background technique [0002] An existing explosion-proof grinder includes a workbench, a grinding wheel, a grinding wheel chuck, a main shaft and an explosion-proof outer shield, the explosion-proof outer shield has an opening, the main shaft is arranged on the workbench, and the main shaft passes through the explosion-proof outer shield. The grinding wheel is set on the grinding wheel chuck, the grinding wheel chuck is connected to the output end of the spindle, and the grinding wheel is located in the explosion-proof outer shield, which is set on the workbench, and the inner explosion-proof rotating shield is also included, and the inner explosion-proof rotating shield is set Between the grinding wheel and the explosion-proof outer shield, the inner explosion-proof rotating shield includes two protective discs, an arc-shaped disc surface, a p...

AI Technical Summary

Problems solved by technology

[0003] In the above-mentioned explosion-proof grinding machine, because the protective disk of the inner explosion-proof rotating shield is rollingly connected with the main shaft through the bearing, that is to say, the protective disk of the inner explosion-proof rotating shield must be mounted on the main shaft through the bearing, and because the inner explosion-proof rotating shield The protective disc and the grinding wheel are worn on the main shaft at the same time, so not only is it not easy to assemble or maintain, but also the structure is complex and the production cost is high

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