RECONSTRUCTION PROPULSION UNIT AND PROPULSION UNIT FOR UNDERGROUND PIPE

PROBLEM TO BE SOLVED: To provide a reconstruction propulsion unit and a propulsion unit for underground pipe capable of simplifying the configuration of the unit and reducing the number of components so as to achieve the downsizing of the whole unit.SOLUTION: In a reconstruction propulsion unit and a propulsion unit for underground pipe, a reception part 35 for receiving propulsive power of a base pushing device 6 is installed in the base end part of soil removing pipes including a soil removing pipe 43 and a rear soil removing pipe 27 while a propulsive power transmission part 38 for transmitting propulsive power of the base pushing device 6 to the reception part 35 of the soil removing pipes including the soil removing pipe 43 and the rear soil removing pipe 27 is installed in the base pushing device 6. The reconstruction propulsion unit and the propulsion unit for underground pipe comprise propulsive power transmission means 41 for transmitting propulsive power of the base pushing device 6 to a guider 7 through the soil removing pipes including the soil removing pipe 43 and the rear soil removing pipe 27, and resistance dispersion means for dispersing propulsive power of the base pushing device 6 through the reception part 35 to peripheral resistance acting on the contact portion between the peripheral surface of a new pipe 28 and a natural ground.SELECTED DRAWING: Figure 5 【課題】 本発明は、装置の構成を簡素化し、構成部品数を少なくして装置全体を小型化することができる埋設管の改築推進装置と埋設管の推進装置を提供することである。【解決手段】 排土管４３およびリア排土管２７などの排土管の基端部に元押し装置６の推進力を受ける受部３５を設けるとともに、元押し装置６の推進力を排土管４３およびリア排土管２７などの排土管の受部３５に伝達する推進力伝達部３８を元押し装置６に設け、元押し装置６の推進力を排土管４３およびリア排土管２７などの排土管を介して先導体７に伝達する推進力伝達手段４１と、元押し装置６の推進力を受部３５を介して新設管２８の周面と地山１との接触部位に作用する周辺抵抗力とに分散させる抵抗力分散手段とを設けた。【選択図】図５