| 摘要 |
The present invention relates to a joint bearing apparatus used in a directional press fitting method which resupplies a bentonite mixed liquid processed to be recyclable at an arrival hole side to a reamer side in a reaming step and a pulling step, is directly connected to a front side of a reamer and is connected to a hollow rod at the back to rotate only the reamer instead of rotating the hollow rod continuously connected during a reaming work, and prevents a helix between hollow rod joints from being uncoiled due to an unexpected rotation of the reamer. The joint bearing apparatus used in a directional press fitting method includes a bearing housing in which a pipe insertion hole and a pipe connection hole are formed at one side and the other side, respectively, and a penetration hole is formed between the pipe insertion hole and the pipe connection hole; a housing cover closing the pipe insertion hole of the bearing housing; a connection rod in which one side is inserted inside the bearing housing though the pipe insertion hole of the bearing housing, and the other side is connected to the hollow rod or a connection apparatus of a pipe to be buried; a plurality of bearings supporting the connection rod to be rotatable inside the bearing housing; and an airtight ring sealing the portion between the bearings and the connection rod. |
