Deep-plowing deep-scarifying spiral bit
A screw drill and deep loosening technology, which is applied in the direction of drill bits, drill pipes, drill pipes, etc., can solve the problems of loose connection and easy damage of the connection parts, and achieve the effects of convenient connection, increased cutting capacity and good fixing effect
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Embodiment 1
[0025] refer to figure 1 , figure 2 Shown, a kind of spiral drill bit for deep plowing and deep loosening comprises drill rod 1, helical blade 2, drill tip, connector, powder ridge cutter 4, and described helical blade 2 is fixed on the drill rod 1, and described drill tip is fixed on the drill bit. Rod head 5, the powder ridge cutter 4 is fixed on the outer edge of the spiral blade 2, the connecting part includes an inner polygonal sleeve and a fastener, the outer side of the transmission output shaft end 7 and the drill pipe end 8 are provided with The outer polygonal structure matched with the inner polygonal set of the connector, and the inner polygonal set is fixedly connected by a fastener. During installation, first match the inner polygonal set with the outer polygonal structure of the drill pipe end 8 and the transmission output shaft end 7, and then lock the inner polygonal set with fasteners.
[0026] The inner polygon set is a regular polygon set. Such as regul...
Embodiment 2
[0034] The difference from Embodiment 1 is that in this embodiment, the auger bit for deep plowing and deep loosening, the connecting piece of the transmission output shaft end 7 and the drill pipe end 8 also includes an outer polygonal sleeve 13, and the transmission output shaft end 7 , The inner side of the drill pipe end 8 is provided with a polygonal structure 14 cooperating with the outer polygonal sleeve 13, one end of the outer polygonal sleeve 13 is inserted into the transmission output shaft end 7, and the other end is inserted into the drill pipe end 8. This structure enables the connection between the drill pipe 1 and the transmission output shaft to withstand greater torque, so as to improve the life of the drill pipe and the transmission output shaft.
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