Patent ID: 6170317
Filing Date: 2001-01-09
Classification: B28D

Abstract:
A monitor for determining need for maintenance of a hydraulic impact breaker which is mounted to a carrier vehicle and includes a means for supplying hydraulic fluid to and removing hydraulic fluid from the impact breaker, a percussion piston which reciprocates due to the action of the hydraulic fluid, and a tool having an end which is subject to an impact delivered by the percussion piston during the breaking, the monitor comprising:a measuring means for measuring the value of at least one parameter that depends on loading of the impact breaker and providing an output in the event that the value of the parameter exceeds a predetermined limit value, andan indicator which is responsive to the output provided by the measuring means to provide a visual indication that the measured value of the parameter exceeds the predetermined limit value,and wherein the monitor is mounted directly on the impact breaker.