Integral rotary drill bit and convenient rotary drilling rig and tree stump crushing method
An integral, portable technology, applied in forestry, application, agriculture, etc., can solve the problems of large size and mass of large-scale machinery, inability to control pine nematode epidemics in a timely and effective manner, and inability to crush tree stubble anytime and anywhere, and achieve strength and rigidity. big effect
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Embodiment 2
[0060] The difference between Embodiment 2 and Embodiment 1 is that: the upper and lower ends of the transmission rod 3 in Embodiment 1 are all connected with the pin hole of the output shaft of the power unit 1 and the pin hole of the connecting column 404 at the bottom of the rotary drill bit 4 respectively. 405 connection. While the output shaft of the power unit 1 in the second embodiment and the connecting column 404 at the bottom of the rotary drill bit 4 are all provided with external threads, the upper and lower ends of the transmission rod 3 are provided with the output shaft and the bottom of the power unit 1. The external thread of the connecting column 404 at the bottom of the rotary drill bit 4 matches the internal thread, and the direction of rotation of the thread is the same as that of the rotary drill bit 4 when drilling, so that the rotary drill bit 4 will only turn tighter and tighter when the rotary machine is working, and will not loosen. take off.
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