| 摘要 |
PURPOSE:To produce an economical advantage and enhance work efficiency by adopting. a single rolling correction device which simplifies operation and reduces construction period and to correct rolling accurately and easily in an open shield machine whose top is open by projecting a side plate above the ground and incorporates a shield jack. CONSTITUTION:A rolling correction device equipped with a jack 5 is mounted removably to a reversed L type fitting 4 at either right or left-sided position, which is proper, outside both upper part side plates 1a and 1b of an open shield machine 1 which projects above the ground. One rolling correction device is mounted at a proper position to be corrected on both sides of the open shield machine 1. The jack 5 for this rolling correction device is operated, thereby pushing the subsoil surface and lifting a portion which needs for correction by way of the reversed L type fitting 4, which makes it possible to correct rolling. |
