摘要:
A cutting device for cutting a pile, including a body part, for connecting the cutting device to a working machine and a gripper attached to the body part to drive the cutting device around the pile to be cut, the gripping means having at least two opposite gripping parts to obtain a grip from the pile and to release the gripper from the grips. The cutting device includes at least two sawing parts arranged to move to a sawing position and to a secure position, and the cutting device having a saw connected to the sawing parts to perform sawing operation when at least one sawing part is in the sawing position, and the cutting device includes elastic means to adapt to forces, which arises during sawing movement of the a saw. The saw is arranged to move during the sawing movement substantially horizontally to the pile being cut.
摘要:
A cut-off element for concrete structures is formed by a plastic material flask having a flat-closed base and a tapering side envelope forming an acute angle with the base, said angle being between 25° and 60° for generating expansion forces so as to provoke a fracture of the concrete part along the cut-off zone defined by the base, and a lifting movement with slight amplitude of the concrete block after cut-off.
摘要:
A pile remover has a first embodiment for removal of short pilings and a second embodiment for long pilings. Both embodiments include a pile-fitting tube with hydraulic cylinders at the top end of the tube that push downward to cause rocking cutters at the bottom end of the tube to pivot with sharpened ends moving inward to shear off the piling. Both embodiments are designed for use with a back hoe or a derrick. After a piling has been shearing, with the cutters still in cut position, the back hoe operator can lift the cut off piling and deposit it on a barge or other conveyance by reversing the cutter action and drooping the piling.
摘要:
The invention relates to a device for breaking off piles, said device being provided with a frame and at least one cutter which is movable to and fro in its longitudinal direction by means of a setting cylinder supported by the frame. The cutter is guided in an elongated passage, whose boundary wall is shaped such that at at least one location between the boundary wall of the passage and the outer circumference of the cutter there is present a recess extending in the longitudinal direction of the cutter and being open at both sides.
摘要:
A method is characterized by clamping a pile above and below a break-off line with simultaneous undercutting of the pile along the break-off line.An apparatus for carrying out the method has an upper power frame (1) and a lower power frame (3) positioned one above the other and connected to each other by means of hydraulic breaking cylinders (2). The power frames (1, 3) are made up of blocks (6, 11) defining a closed figure and pivotally connected to one another by means of hydraulic clamping cylinders (7, 13). The axes of the hydraulic cylinders (7, 13) run perpendicularly with respect to the longitudinal axis of the pile.
摘要:
The invention relates to a device for precutting a column for a floor. Said device includes a precutting means configured so as to be movable between a rest position and a precutting position.
摘要:
An internal caisson/jacket leg cutter and method provides a frame having upper and lower end portions. The upper end portion has rigging that enables the frame to be lifted. Extensible arms are movably supported upon the frame. The arms extend and retract along generally radially extending lines. Extension of the arms enables them to contact the inside surface of a caisson/jacket leg and thus center and anchor the frame within the caisson/jacket leg interior. A cutting mechanism at the lower end portion of the frame includes one or more rotary cutters or milling devices that cut the caisson/jacket leg wall as these cutters traverse an arc shaped path, tracking the caisson/jacket leg wall.
摘要:
A pile cage (2) has a reinforcement structure (4) having a first part (8) adapted to remain in a pile, the first part terminating at a predefined cut-off level (20), and a second part (10) that is protected in order to debond it from concrete cast around it. A split-wailed annular tube (30) is located at the cut-off level (20) and is connected to a supply of pressurised fluid after the concrete has been poured and set. The tube (30) expands under pressure initiating a crack that is propagated by the escape of fluid from the slit (32) towards a centre of the pile at the cut-off level (20). The entire cracked central surface of the cast pile acts as a hydraulic jack separating the pile cap (104) from the remainder of the pile (102).