High Pressure Rotary Jet Drill Bit

76 High-pressure rotary grouting anchor cable drill bits can cooperate with the corresponding construction technology to effectively solve the problems of conventional anchor cables in the construction of foundation pit pile anchor support system in soft soil areas, such as difficulty in hole formation, difficulty in cable installation, small bearing capacity, leakage, etc. The high-pressure rotary grouting anchor cable drill bit has a rolling bearing at the drill bit. The inner ring of the bearing is fixed on the drill rod and rotates synchronously with the drill rod. The outer ring of the rolling bearing is a free end and does not rotate with the drill rod under external resistance. After the high-pressure rotary grouting anchor cable drill bit enters the soil layer, the outer ring of the rolling bearing enters the anchor hole together with the anchor plate, and the steel strand connected to the anchor plate is brought in synchronously. This design prevents the steel strand from being twisted into a twist shape when the drill rod rotates and drills, ensuring the smooth installation of the steel strand and the construction quality of the anchor cable.

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