Head for excavator mounted to power shovel

Abstract

Disclosed is a breaking head mounted to an excavator for removing rocks on or in the ground at construction work. The breaking head includes lateral plates positioned between an upper plate and a lower plate, and a rotary plate connected to a rotary shaft installed to an upper end of the upper plate. The rotary plate has brackets to be engaged to a link and an arm of the excavator. The breaking head further includes a plurality of pivot cylinders at a rear portion of the breaking head for pivoting the breaking head left and right around the rotary shaft and inclined bearing members attached between a plurality of bearing members installed along four corners of the lower plate.

1 . A breaking head for an excavator including lateral plates positioned between an upper plate and a lower plate, and a rotary plate connected to a rotary shaft installed to an upper end of the upper plate, the rotary plate having brackets to be engaged to a link and an arm of the excavator; the breaking head comprising: 
 a plurality of pivot cylinders at a rear portion of the breaking head for pivoting the breaking head left and right around the rotary shaft; and    inclined bearing members attached between a plurality of bearing members installed along four corners of the lower plate.    
   
   
       2 . The breaking head as claimed in  claim 1 , wherein fixing pieces are secured to both lower ends of the rotary plate, and a bracket coupled to a rod of the pivot cylinder is hinged to the fixing piece by a hinge.  
   
   
       3 . The breaking head as claimed in  claim 1 , wherein a protrusion is formed at a rear portion of the bracket.  
   
   
       4 . The breaking head as claimed in  claim 3 , wherein a reinforcing pipe is provided between the protrusions.  
   
   
       5 . The breaking head as claimed in  claim 1 , wherein a footboard is attached to a lower end of the lateral plate.  
   
   
       6 . The breaking head as claimed in  claim 5 , wherein a knob is attached to an upper end of the lateral plate.