| 摘要 |
PURPOSE:To surely and satisfactorily coat concrete on the inner wall of a tunnel by forming an outflow hole for feeding concrete at the center on the front face of a trowel and protruding a brush from both sides to the rear end side in the moving direction. CONSTITUTION:A conveying hose is connected to the outflow hole 2 of a squarely-formed trowel A, a flexible seal body 3 made of a brush is protruded from both sides of the front face 1 to the rear end side in the moving direction shown by an arrow (a). The outflow hole 2 is formed at the center with the same length L from both sides in the width direction of the front face 1, both side faces 1a and 1b of the front face 1 from the outflow hole 2 to both sides in the width direction are symmetrically formed at the same height as the coated wall face into a plane or a taper face. Concrete can be coated through the outflow hole 2 to the uniform thickness on the right and left. |
