Auger bit with openable bottom baffle
An auger bit, open-close technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of shrinkage, difficulty in grouting, sand easily falling back into the hole, etc., and achieve the effect of avoiding shrinkage.
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[0014] The present invention is further illustrated below by specific examples.
[0015] Such as figure 1 , figure 2 As shown, an auger bit with an openable and closable bottom baffle includes a drill body 1 with helical blades 2, a centering sleeve 3 and cutter teeth 4 arranged at the bottom of the drill body 1; it also includes a cylindrical Side baffles 6, middle baffles 7, and lower baffles 5; the cylindrical side baffles 6 are fixed on the bottom of the drill bit body 1, and the horizontal section shape of the lower baffles 5 is the same as that of the cylindrical side baffles 6. There is an opening on the surface, and the middle baffle 7 is rotatably connected to the top of the lower baffle 5, which is used to control the opening or closing of the opening of the lower baffle 5. The lower baffle 5 is rotatably connected to the bottom of the drill rod body 1 and is located on the cylindrical side baffle. 6 Bottom, the centering sleeve 3 is set under the lower baffle 5, ...
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Abstract
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