A method and an apparatus to tend a pipe in a ditch of the ground. (Machine-translation by Google Translate, not legally binding)

摘要

A method of laying a pipe in a trench of the land comprising the steps of excavating a first pilot trench, introducing into said pilot trench a trench fixing device in order to support the side walls of said trench, excavating a further section of the trench. The pilot ditch, in front of the mounting frame, introduce at the bottom of said pilot ditch a set of vertically disposed plate means digging a second trench to the necessary depth between said inserted plate means arranged vertically so that the sides of the the second trench is fully supported by said plate means, the width of said second trench being less than the width of said pilot trench so that a shoulder is formed between the pilot trench and the second trench, introducing a section of pipe in said trench second ditch, remove the vertically disposed plate means, support the trench fixing apparatus from the ground level and have to advance the frame to secure ditch in said other section of the first ditch. (Machine-translation by Google Translate, not legally binding)