Method for monitoring drive components in a large hydraulic excavator

Abstract

A method for continuously and simultaneously monitoring a plurality of operatively connected mechanical and/or hydraulic drive components provided in at least one drive train in a large hydraulic excavator by virtue of a vibration sensor being positioned in the region of just a single one of the operatively connected drive components, the vibration sensor being connected by a line to an evaluation unit which contains prescribable conspicuousness patterns for all the operatively connected drive components, and the collective measurement signal from all the operatively connected drive components being aligned in conditioned form, as an input frequency, with a limit value—associated with the respective individual drive component—from the conspicuousness pattern.

1 . A method for continuously and simultaneously monitoring a number of mechanical and/or hydraulic drive components provided in at least one drive train of a large hydraulic excavator and in operative connection with one another, comprising:
 a vibration pickup is positioned in the area of just a single one of the drive components in operative connection with one another;   wherein the vibration pickup is connected via a line to an evaluation unit, which contains predeterminable peculiarity patterns of all the drive components in operative connection with one another and transmits a common measuring signal of all the drive components in operative connection with one another in a prepared form as an input frequency with a limit value from the peculiarity pattern that belongs to the respective individual drive component.   
     
     
         2 . The method as claimed in  claim 1 , wherein the peculiarity pattern for the respective drive component is stored within the evaluation unit as a limit value that is dependent on the rotational speed of the engine or motor. 
     
     
         3 . The method as claimed in  claim 1 , wherein the vibration pickup is secured to the housing of the drive component. 
     
     
         4 . The method as claimed in  claim 1 , wherein the evaluation unit is coupled to an electronic evaluation system, in which further machine-relevant operating parameters are stored. 
     
     
         5 . The method as claimed in  claim 4 , wherein the evaluation unit is formed as a component part of the electronic monitoring of the large hydraulic excavator. 
     
     
         6 . The method as claimed in  claim 5 , wherein the data prepared by the evaluation unit located in the large hydraulic excavator are made available wirelessly to an external location. 
     
     
         7 . The method as claimed in  claim 1 , wherein both the respective limit value of the drive components in operative connection with one another and their exceeding of a limit value are displayed at least on an optical display provided in the driver's cab of the large hydraulic excavator. 
     
     
         8 . The method as claimed in  claim 7 , wherein, when the data exceed a limit value, an optical and/or acoustic signal is triggered. 
     
     
         9 . A device for continuously and simultaneously monitoring a number of drive components in operative connection with one another in at least one drive train of a large hydraulic excavator with a service weight in excess of 100 t, comprising:
 a vibration pickup which is fixedly connected to the housing of a single one of the drive components in operative connection with one another and is connected via a line to an evaluation unit provided in the area of the large hydraulic excavator.   
     
     
         10 . The device as claimed in  claim 9 , wherein the evaluation unit is in operative connection with an electronic evaluation system, within which further machine-relevant data can be stored and can be correlated with the data from the evaluation unit.