Hydraulic excavator with integrated magnetic cross-beam

Abstract

The present disclosure relates to a hydraulic excavator comprising a magnet attached to its stem or an attached magnetic cross-beam, in which the power of the magnets is adjustable, wherein it includes a safety control such that the magnetic force of the respective magnets is increased upon taking up a load and upon leaving a safety zone around the load take-up point, the travel speed of the excavator being switchable at the same time from a reduced value during load take-up to an increased speed.

1 . A hydraulic excavator comprising a stem, a magnet coupled to the stem, in which the power of the magnets is adjustable, and a safety control such that the magnetic force of the respective magnets is increased upon taking up a load and upon leaving a safety zone around the load take-up point, wherein the travel speed of the excavator can at the same time be switched from a reduced value during load take-up to an increased speed.  
   
   
       2 . The hydraulic excavator as claimed in  claim 1 , wherein the safety zone starting from the take-up point of the load to be taken up by means of the magnets can be determined via sensors in that the travel distance of the load upon switching on the magnets can be determined by the sensors.  
   
   
       3 . The hydraulic excavator as claimed in  claim 2 , wherein there are provided angle, inclination and/or displacement sensors for determining the travel distance.  
   
   
       4 . The hydraulic excavator as claimed in  claim 3 , wherein an angle sensor is provided for taking up the angular position α between stem and boom, and an inclination sensor is provided for determining the boom inclination β.  
   
   
       5 . The hydraulic excavator as claimed in  claim 4 , wherein the angle sensor is provided for determining the angle of rotation γ of the uppercarriage.  
   
   
       6 . The hydraulic excavator as claimed in  claim 1 , wherein a displacement sensor is provided for detecting the travel distance of the hydraulic excavator.  
   
   
       7 . The hydraulic excavator of  claim 1 , wherein the magnet is coupled to the stem via an attached magnetic cross-beam.  
   
   
       8 . The hydraulic excavator of  claim 1 , wherein the magnet is attached to the stem.