A post-grouting pipe orifice connecting device for cast-in-place piles

Abstract

The utility model discloses a bored pile post grouting pipe orifice connecting device relates to grouting equipment field, including grouting steel pipe and grouting casing, still include expansion pipe, lifting piece and rotation and push mechanism, and the upper position fixed cover of expansion pipe surface is equipped with cover disc, and rotation and push mechanism is located the upper position of lifting piece, and rotation and push mechanism are used for driving lifting piece to rise and extrude expansion pipe to make expansion pipe inflation, and a plurality of steel wire ropes are fixedly installed between cover disc and rotation and push mechanism. The utility model discloses a rotation and push mechanism can drive lifting piece to move upwards, and in the process of moving upwards, can expand expansion pipe to produce greater friction with the pile hole wall to realize fastening, because cover disc and grouting steel pipe fixed connection, and cover disc is fixedly connected with lifting piece through steel wire rope, can improve the stability of grouting casing and lifting piece, avoid the separation phenomenon, can carry out grouting with higher grouting pressure, effectively improve grouting construction efficiency.

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