The invention discloses a new explosion-proof grinding wheel machine, which comprises a worktable, a grinding wheel, a spindle, an explosion-proof outer shield, an internal explosion-proof rotating shield, a stroke switch and a support mechanism. The internal explosion-proof rotating shield includes two protective panels and arc panels. The two sides of the arc panel and the outer sides of the two protective panels are spaced, and the side of one of the two protective pans is provided with a protective pan. The supporting mechanism comprises a fixing frame, an upper pulley group and a lower pulley group. The cross section of the fixing frame is an inverted U-shaped structure. The upper pulley group and a lower pulley group are arranged in the upper and lower parts of the fixing frame. The two sides of the arc panel of the inner explosion-proof rotary cover are located between the upper pulley group and the lower pulley group, and the fixing frame is arranged in the inner part of the explosion-proof outer cover. The stroke switch is arranged on the left side of the explosion-proof outer shield, and the stroke switch contact plate arranged on the side of a protective disk of the inner explosion-proof rotating shield contacts with the contact of the stroke switch.
【技术实现步骤摘要】
一种新型防爆砂轮机
本专利技术涉及一种新型防爆砂轮机,属于电动工具
技术介绍
现有一种防爆砂轮机,其专利申请号为201610128907.5,授权公知号为CN105563337B。该防爆砂轮机含有工作台、砂轮、主轴、防爆外护罩、内防爆旋转护罩、行程开关、撑顶机构和支撑机构,内防爆旋转护罩的两个防护盘均为部分圆环形,该部分圆环形的两个防护盘上均设有圆弧形导轨槽,内防爆旋转护罩的圆弧形导轨槽与支撑机构构成转动连接,支撑机构设置在所述防爆外护罩的内顶部上,撑顶机构顶在内防爆旋转护罩的弧形面板上,当内防爆旋转护罩的阻挡板沿主轴转动到与工作台接触时,撑顶机构正好与内防爆旋转护罩的弧形面板的后端部接触,行程开关设置在防爆外护罩的后部,行程开关的触头与内防爆旋转护罩的弧形面板的后端部相接触。在上述防爆砂轮机中,一方面由于含有撑顶机构,因此结构复杂;另一方面由于在内防爆旋转护罩两个防护盘上均设有圆弧形导轨槽,内防爆旋转护罩的结构强度较低,砂轮在爆裂产生碎片被内防爆旋转护罩阻挡过程中,内防爆旋转护罩两个防护盘上设有的圆弧形导轨槽容易变形,因此存在安全隐患,从而降低了安全可 ...
【技术保护点】
1.一种新型防爆砂轮机,含有工作台、砂轮、主轴、防爆外护罩、内防爆旋转护罩、行程开关和支撑机构,防爆外护罩带有开口,主轴设置于工作台上,且主轴穿过防爆外护罩,砂轮设置于砂轮夹盘上,砂轮夹盘与主轴的输出端连接,且砂轮位于防爆外护罩内,内防爆旋转护罩包括两个防护盘、弧形面板,弧形面板设置在两个防护盘的外周边上,弧形面板内设有挡板,内防爆旋转护罩的弧形面板的前端部上设有阻挡板,该阻挡板上设有通孔,该通孔与所述防爆外护罩上端部设有的销孔相配,该销孔与所述阻挡板上设有的通孔通过插销相连,内防爆旋转护罩位于防爆外护罩的内部,砂轮的上部位于内防爆旋转护罩的内部;其特征在于,所述弧形面板的 ...
【技术特征摘要】
1.一种新型防爆砂轮机,含有工作台、砂轮、主轴、防爆外护罩、内防爆旋转护罩、行程开关和支撑机构,防爆外护罩带有开口,主轴设置于工作台上,且主轴穿过防爆外护罩,砂轮设置于砂轮夹盘上,砂轮夹盘与主轴的输出端连接,且砂轮位于防爆外护罩内,内防爆旋转护罩包括两个防护盘、弧形面板,弧形面板设置在两个防护盘的外周边上,弧形面板内设有挡板,内防爆旋转护罩的弧形面板的前端部上设有阻挡板,该阻挡板上设有通孔,该通孔与所述防爆外护罩上端部设有的销孔相配,该销孔与所述阻挡板上设有的通孔通过插销相连,内防爆旋转护罩位于防爆外护罩的内部,砂轮的上部位于内防爆旋转护罩的内部;其特征在于,所述弧形面板的两侧边与两个防护盘的外周边均留有间距,所述内防爆旋转护罩的两个防护盘和弧形面板的后端部上设有限位块,所述两个防护盘中的一个防护盘的侧面上设有行程开关触板;所述支撑机构含有固定架,上滑轮组和下滑轮组,固定架的横截面为倒U型结构,上滑轮组和下滑轮组设置在固定架的内上部和内下部,所述内防爆旋转护罩的弧形面板的两侧边位于上滑轮组和下滑轮组之间,固定架设置在所述防爆外护罩的内部;所述行程开关设置在防爆外护罩的左侧面上,所述内防爆旋转护罩一个防护盘的侧面上设有的行程开关触板与行程开关的触头相接触。2.根据权利要求1所述的一种新型防...
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