Apparatus and method for controlling the start up and phase relationship between eccentric assemblies

摘要

The vibration compacting machine includes a frame, a leading drum and a trailing drum. The leading and trailing drums are rotatably mounted to the frame. The leading drum includes a first eccentric assembly that is rotatably mounted inside of the leading drum and the trailing drum includes a second eccentric assembly that is rotatably mounted inside the trailing drum. A first motor rotates the first eccentric assembly and a second motor rotates the second eccentric assembly. Rotations of the eccentric assemblies transfers vibrations to the drums to compact a ground surface. A control adjusts the speed of the first and second motor relative to one another to keep the first eccentric assembly from running in phase with the second eccentric assembly. The control also delays starting the second eccentric assembly relative to the first eccentric assembly to minimize horsepower drain on the engine of the vibration compacting machine.