A Combined In-Situ Shallow Ground Temperature Measuring Drill Bit
A combined and in-situ technology, applied in the direction of drill bits, drilling equipment, earthwork drilling and production, etc., can solve the problems of measurement error, soil layer disturbance, underground temperature measurement point is easy to connect with the outside world, etc., to achieve the convenience of installation, disassembly and maintenance Effect
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[0012] see figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, this embodiment is composed of a drill body 1, a first cutting edge 2, a second cutting edge 3, a movable cone tip 4, a screw 5 and a pin 6. The front end of the drill body 1 is a conical structure and has a cross-shaped groove. The cone angle of the conical structure is 40°~60°. The first cutting edge 2 and the second cutting edge 3 are inserted into the cross-shaped groove and connected to the drill bit body 1 through the screw 5. The first cutting edge 2 and the second cutting edge 3 It is in the shape of a cross, and the maximum width of the first cutting edge 2 and the second cutting edge 3 is 3-5 mm larger than the outer diameter of the drill body 1 . The lower part of the movable cone point 4 is designed to be arc-shaped, and the movable cone point 4 is installed in the arc-shaped hole groove of the first cutting edge 2 through the pin 6. The movable cone point 4 is closely matched with ...
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