A mobile vehicle mounted hydro demolition system comprising ultra-high pressurized water through a rotating nozzle water jet for cutting concrete, including a water supply, a vacuum blower, and a vacuum container that has offset with a dewatering bag so that incoming water can be pumped off as wastewater. A remote control gives an operator immediate adjustments of the rotational speed of the nozzle; the transverse traversing speed of the nozzle; the forward advancement of the vehicle; the number of traverses the head traverses before the vehicle advances its predetermined step; the pressure of the high-pressure pump; the amount of vacuum cfm's the blowers are producing; the steering of the vehicle; and the traversing distance of the rotating nozzle. By manipulating the above parameters the depth of removal is predictable and provides a consistent depth.

A mobile vehicle mounted hydro demolition system comprising ultra-high pressurized water through a rotating nozzle water jet for cutting concrete, including a water supply, a vacuum blower, and a vacuum container that has offset with a dewatering bag so that incoming water can be pumped off as wastewater. A remote control gives an operator immediate adjustments of the rotational speed of the nozzle; the transverse traversing speed of the nozzle; the forward advancement of the vehicle; the number of traverses the head traverses before the vehicle advances its predetermined step; the pressure of the high-pressure pump; the amount of vacuum cfm's the blowers are producing; the steering of the vehicle; and the traversing distance of the rotating nozzle. By manipulating the above parameters the depth of removal is predictable and provides a consistent depth.

A remote controlled demolition robot (10) comprising a controller (17) and at least one actuator (12) controlled through a hydraulic system (400) comprising at least one valve (13a) and a hydraulic gas accumulator (440), wherein the controller (17) is configured to determine a fluid flow in the hydraulic system (400), determine if the determined fluid flow in the hydraulic system is above a first threshold, and if so discharge the accumulator (440) to provide power to the actuator (12); and determine if the determined fluid flow in the hydraulic system is below a second threshold, and if so charge the accumulator (440) for buffering power in the hydraulic system (400).

A method for, in particular completely or partially, disassembling a tower of a wind power plant, comprising the following steps: selecting suitable disassembly measures as a function of the tower location and the tower characteristics; preparing the disassembly, in particular of the tower and optionally the surroundings; carrying out the disassembly; and transporting the disassembled tower away.

A hydrodemolition apparatus provides multiple degrees of freedom enabling the treatment of overhanging or vertically inclined surfaces. A nozzle wall or track is pivotable to present the nozzles substantially normal to the overhanging or inclined surface. The nozzle wall or track is positioned proximate to the inclined surface by a combination of a vertically displaceable carriageway, a laterally displaceable carriage and an elongated member that terminates in the pivotable nozzle wall or track.

A carrier comprising at least a first hydraulic cylinder and a second hydraulic cylinder both having each a piston and a piston position sensor, wherein the carrier is arranged to carry a tool through the use of the hydraulic cylinders and wherein the controller is configured to: receive control information to move the tool in a direction along a working line; receive position information for the first cylinder; receive position information for the second cylinder; determine if the working line for the tool is maintained, and, if the working line is not maintained, then adapt for the movement of the first cylinder by providing control of the second cylinder to maintain the working line for the tool and thereby feeding the tool along the working line.

A hydrodemolition rig for an inclined surface comprises a frame, a carriage, and a plurality of wheel assemblies. The wheel assemblies are spaced from one another about the frame, with at least two of the wheel assemblies comprising a wheel and a hydraulic assembly for selectively adjusting the spacing between the wheel and the frame. The carriage is configured to reciprocate within the frame and to carry one or more nozzles for delivering water for hydrodemolition.

A surface, e.g., a concrete surface, is worked by guiding a lance (23) which comprises a water jet mouthpiece (27) coupled to the high-pressure water over the surface in a working path and at the same oscillating the lance transversely to the working path. The oscillation is driven by an eccentric mechanism (30, 31) and has a stable eccentric position when the mechanism is rotated in the one direction and a stable eccentric position when it is rotated in the other direction. The two positions have a different eccentricity and impart different widths to the working. The working depth and the working width can be changed by changing the direction of rotation.

A robot includes a movable vehicle to which is mounted a horizontal truss long enough to span the entire width of an area that has been demolished using impact methods. The truss extends laterally completely to one side of the robot and the robot travels on one side of a demolished area and the end of the truss has a wheeled support that can travel beyond the other side of a demolished area. A movable rotational lance device is traversed back and forth along the truss. With each pass the robot then moves perpendicular to the truss. The truss has a nozzle spraying water onto the area. In this way, an entire area is efficiently treated.

Disclosed is a system and method for the demolition of vertical concrete structures. A moveable concrete cutting vehicle includes a carriage adapted to move along the top surface of the vertical concrete structure that is to be demolished. The carriage carries a cutting assembly that is moveable in at least two directions, such as a vertical direction and a slightly downwardly angled circumferential direction, which cutting assembly is positioned to make cuts through the entire width of the concrete wall of the vertical concrete structure. After a series of cuts have been performed, the carriage may be moved along the top, horizontal rim of the vertical concrete structure, and separable concrete blocks that have been formed in the previously processed region may be tipped off of the remaining vertical concrete structure to fall to the ground. Such process may continue with the carriage carrying the concrete cutting vehicle progressively downward and around the vertical concrete structure, allowing small, block-shaped sections of the concrete structure to be tipped into the concrete structure until the entire concrete structure has been demolished.