| 摘要 |
<p>PROBLEM TO BE SOLVED: To inexpensively manufacture a traction apparatus having a simple structure and capable of ensuring a space for pulling out a pipe destruction device over substantially whole length. SOLUTION: This traction apparatus is provided with a traction device D for pulling a renewal pipe B connected to the pipe destruction device into a track where a pipe is buried while destructing a pipe wall by pulling the pipe destruction device E inserted through one end side of the buried pipe A toward the other end side. It is provided with a first transmission device 4 capable of transmitting a traction reaction force of the traction device to the other end side of the buried pipe exposed on the inside of a pit F2 and a second transmission device 5 capable of transmitting a traction reaction force of the traction device to the inner face side of the pit. The second transmission device is provided so as to ensure the space 8 for pulling out the pipe destruction device over substantially whole length on the inside of the pit and on the upstream side in the direction of traction of the traction device. The first transmission device is provided so as to move freely over a receive position for receiving the other end side of the buried pipe from the longitudinal direction of the pipe and a retraction position where the receiving is released to prevent the interference with the pipe destruction device pulled out on the inside of the pit.</p> |
