Braumann has been using open shield technology successfully since 1985
The mechanical development of the open shield technology is based on the mining of soil, protected by manually controlled open shields.
Braumann has been using this method for a long time. And we are constantly developing our jacking machines. In the central Braumann workshop, we manufacture and optimize jacking machines for all tasks at hand.
We have controllable open shield machines with nominal cross-sections from DN 1200 to DN 3000. They can be equipped with drawer shacks and excavator arms for oft soil as well as milling heads for solid rock. We also build and maintain these machines in the central Braumann workshop.
In soft soil, mining by means of a migrant hock has prevailed. The adaptation of the dismantling shovel with fangs or the assembly with a dismantling hammer is possible.
Very dense loose soils, chemically solidified, conglomerate-like rocks and solid rocks can be economically processed by means of a road header. If necessary, the picks are replaced during the jacking breaks.