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PR RoomPatent introduction

Patent introduction

Tip propulsion device for underground conduit

This invention relates to a tip propulsion device for an underground conduit, operated by hydraulic pressure
or electric power, excavates a ground layer. After separating and furnishing the tip propulsion device, join the separated lines by externally covering with a plate using a rubber sealant and weld based on internal oil pressure jack. As such, to form a pipeline for burying the pipe body, when the tip propulsion device excavates and advances, excavation work must be executed efficiently to accurately excavate in a straight line from the starting point to the end point. Earth and stone fragments created during excavation are collected for work site safety and clean environment.

Ground excavation device and used ground excavation method

This invention relates to ground excavating devices and used ground excavating method.
In detail, one stop construction is possible without additional backward facilities or going through
many steps except actuators. As such, can reduce construction cost and reuse the ground excavation
device and used ground excavating method.

Tip propulsion device for underground conduit and tip propulsion method

This invention is propulsion method for underground conduit propulsion device. Underground conduit is
formed by formed conduits through excavation of rock and sand using the propulsion device from
the construction section to the confirmation section. By simultaneously excavating rock and sand, can visually monitor whether excavating in a straight line from the starting point to the final point. As such, can accurately excavate in a straight line from the starting point to the final point by undertaking excavation work.

Non-detached all in one roof structure and construction method

This invention relates to a non-detachable all in one roof structure and used construction method,
whose purpose is to construct high strength roof structures (tunnel) by combining installed pipe roof and
concrete structures installed in these roofs all in one.