Novel safety device for drilling building materials
A safety device and a technology for new building materials, applied in the field of safety devices for drilling new building materials, can solve problems such as damage to building materials, limited vibration reduction effect, and damage to building materials, so as to avoid damage to building materials and improve performance.
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Embodiment Construction
[0013] Such as figure 1 As shown, a new type of safety device for drilling of building materials includes an inner cylinder 1 for embedding a hand drill, and an inner limit ring 2 is also provided at the bottom end of the vertical inner side wall of the inner cylinder 1. The inner cylinder 1 is also provided with an outer cylinder 3, the top of the vertical outer side wall of the inner cylinder 1 is also fixedly sleeved with an upper ring plate 4, and the bottom end of the vertical outer side wall of the inner cylinder 1 is also The fixed sleeve is provided with a lower annular plate 5. At the same time, a plurality of upper universal balls 6 are evenly arranged on the vertical outer side wall of the inner cylinder 1, and the upper universal balls 6 are close to the vertical inner side wall of the outer cylinder 3 Fit together to effectively realize the flexible rotation connection between the inner cylinder 1 and the outer cylinder 3; the bottom end of the vertical inner side ...
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