Positioning a sinking tunnel section
AssigneeStrukton Civiel Projecten B.V.
InventorGerrit Martinus Hertgers
Life of this patent
Estimating the term…
Abstract
A positioning apparatus includes a frame and two substantially vertically extending legs. The frame includes a suspension device adapted to suspend a sinking tunnel section. The legs include upper ends connected by a substantially horizontally extending beam and lower ends vertically movable relative to the sinking tunnel section. The legs include clamping members for engaging opposite transverse sides of the tunnel section that are settable substantially in a plane defined by the legs and beam of the frame. The frame is devised for extending with its legs outwardly of the two opposite transverse sides of the tunnel section and extending with the beam above a roof of the tunnel section.
Claims20
A positioning apparatus, comprising:
- a frame comprising a suspension device adapted to suspend a sinking tunnel section;
- two substantially vertically extending legs that comprise:
- upper ends connected by, and hingedly connected to, a substantially horizontally extending beam of the frame, and lower ends vertically movable relative to the sinking tunnel section, the legs further comprising clamping members for engaging opposite transverse sides of the tunnel section;
- and
- one or more lifting devices attached to the frame, each of the lifting devices devised to independently move the beam bi-directionally in a path substantially orthogonal to the substantially horizontally extending beam, each of the clamping members settable to urge the sinking tunnel section bi-directionally in a path substantially parallel to a lengthwise dimension of the substantially horizontally extending beam independently of movement of the frame by the lifting devices.
Dependencies are inferred from the claim text.