Abstract:
A vibratory compactor includes a first compacting element having a variable vibratory mechanism that sets a modifiable compaction effort, a second compacting element, a fluid reservoir, a first sensor configured to measure a first data parameter associated with the fluid reservoir, and a control system. The control system is configured to receive the first data parameter, determine a target compaction effort for the first compacting element based on the first data parameter; and modify the variable vibratory mechanism to set the compaction effort at the target compaction effort.
Abstract:
The disclosure concerns a hydraulic system (36) for driving a vibratory mechanism (40) of a compaction roller (4, 5). The hydraulic system (36) comprising at least one hydraulic motor (37) connectable to vibratory mechanism (40) and a first hydraulic pump (38) fluidly connected to the at least one hydraulic motor (37) and arranged for supplying pressurised hydraulic fluid to the at least one hydraulic motor (37). The hydraulic system (36) further comprises a second hydraulic pump (39) fluidly connected to the at least one hydraulic motor (37) and arranged for supplying pressurised hydraulic fluid to the at least one hydraulic motor (37). The disclosure also concerns a corresponding method for controlling a vibratory mechanism (40) of a compaction roller.
Abstract:
The present invention relates to a surface compactor and a method of operating a surface compactor. The surface compactor is provided with at least one compacting surface for compacting a substrate an excitation system that generates a substantially square wave vibrational displacement or force that vibrates the least one compacting surface during compaction to increase the compaction rate of the substrate.
Abstract:
A system and method for controlling a paving operation includes applying asphalt to a surface using a screed mounted on a paving machine, scanning a surface of the asphalt as it is applied by the screed immediately behind the paving machine using a thermal scanner mounted on the paving machine, and transmitting a signal indicative of a scanned temperature of the asphalt from the paving machine. The signal is received at the compactor and is indicative of the scanned temperature of the asphalt. The signal is used to notify a compactor operator at the compactor.
Abstract:
An apparatus for the compaction of roadway materials includes a compaction analyzer for calculating stiffness during construction of the roadway. The apparatus generates a dynamic modulus for each layer of a roadway which can be used to calculate the overall effective modulus. A method for determining stiffness includes generating a dynamic modulus for each layer and calculating the overall effective modulus using the modulus of each layer.
Abstract:
The present disclosure provides vibratory compactor comprising an active isolation apparatus for reducing a vibration generated during the rotation of an eccentric shaft having an eccentric weight attached thereto. The active isolation apparatus comprises a drum, a propulsion motor configured to rotate the drum, a drive plate disposed between the propulsion motor and the drum in such a way as to be connected to the propulsion motor to transmit a rotating force to the drum, and a drum support configured to rotatably support the drum. The active isolation apparatus further comprises a first active isolation mass disposed between the drum support and the drum, a second active isolation mass disposed between the drive plate and the drum, an eccentric shaft configured to be rotated while penetrating through the first active isolation mass, the drum, and the second active isolation mass, a primary eccentric weight attached to the eccentric shaft inside the drum, an active isolation eccentric weight attached to each of the eccentric shaft inside the first active isolation mass and the second active isolation mass, and a vibration motor configured to rotate the eccentric shaft. In accordance with the active isolation apparatus of the present disclosure, when the eccentric shaft is rotated, a phase of a vibration generated by the active isolation eccentric weights is opposite to that of a vibration generated by the primary eccentric weight, and the vibration generated by the active isolation eccentric weights cancels the vibration generated by the primary eccentric weight.
Abstract:
A system for determining a state of compaction of a work material (101) includes a roller (11) having a vibration system (30). A controller (41) is configured to determine the speed of the machine (10), determine an inclination of the machine (10), and determine an inclination power change based upon the inclination and the speed of the machine (10). The controller (41) is also configured to determine the gross power loss resulting from the compaction operation, determine a vibration compensation factor based upon vibration characteristics of the vibration system (30), and determine the state of compaction of the work material (101) based upon the inclination power change, the power loss, and the vibration compensation factor.
Abstract:
A water ballast for a compactor is disclosed. A ballast tank is installed under a cover plate having a plurality of holes. Through the holes of the cover plate, water falling onto the cover plate drains into the ballast tank. The edges all around the cover plate are slightly angled upwards in order to prevent water from draining out of the cover plate. Also, the water ballast has a ballast drain port on the compactor's frame. The ballast drain port is connected with a drain hole on the ballast tank by a drain hose so that it is used to drain out some water from the ballast tank.
Abstract:
Eine Verdichterwalze für einen Bodenverdichter umfasst eine Oszillationsmassenanordnung (34) mit wenigstens einer um eine zu einer Verdichterwalzendrehachse exzentrische Oszillationswellen drehachse drehbaren Oszillationswelle (36, 38) mit wenigstens einer Oszillationsunwuchtmasse (66, 68) und eine Vibrationsmassenanordnung (84) mit einer um eine Vibrationswellendrehachse (D v ) drehbaren Vibrationswelle (86) mit wenigstens einer Vibrationsunwuchtmasse (96), wobei wenigstens eine Oszillationswelle (36, 38) und die Vibrationswelle (86) in der Verdichterwalze (10) zur Drehung antreibbar getragen sind.