| 摘要 |
A propulsion guide device of a steel pipe roof structure is provided to reduce unnecessary works and to increase work efficiency by cutting off the inflow of crushed soils or rock fragments to a pre-propulsion steel pipe, to prevent the lowering in efficiency of a crusher and to propel a steel pipe smoothly by preventing the leakage of air, a power source for a crusher, and to increase the lateral binding strength of adjacent steel pipes by preventing a horizontal groove of a pre-propulsion pipe from being open. A propulsion guide device of a steel pipe roof structure is installed to a post-propulsion steel pipe(200b) coupled laterally to a pre-propulsion steel pipe(200a) in the slide type after propelling the first steel pipe to a road or an obstacle and installing supports(202) to the inside at regular intervals and forming a horizontal groove in the horizontal direction. The propulsion guide device is installed between angles installed to the outside of the propulsion steel pipe at regular intervals to correspond to the horizontal groove of the pre-propulsion steel pipe and composed of a closing plate(300) fixed to the end of the post-propulsion steel pipe and projected forward to the length enough to cover a crusher crushing soil or rock, angles(306) installed to the outside of the closing plate to increase lateral binding strength and to have the function of a guide, and a guide plate(314) installed to the end of a connection plate(310) installed on the end of the closing plate and guide angles(316) installed to the inside of the connection plate to keep the horizontal groove to keep the horizontal groove of the pre-propulsion steel plate not to be open. |
