Excavating bucket with a shredder and a classifier

Abstract

In an excavating device for a bucket excavator wherein the excavating device is supported by a carrier and has a reception chamber with an inlet opening and a material through-flow opening, a shredder is arranged in the through-flow opening, and a classifier is arranged outside the reception chamber below the through-flow opening and is mounted to the bucket.

1 . An excavating device for a bucket excavator ( 1 ) or a bucket shovel loader including a bucket ( 3 ) supported by a carrier and having a reception chamber ( 4 ) with an inlet opening ( 7 ) and a material through-flow opening ( 11 ), a material shredder ( 12 ) arranged in the material through-flow opening ( 11 ) and a classifier ( 25 ) arranged outside the reception chamber ( 4 ) and mounted to the bucket ( 3 ).  
   
   
       2 . The excavating device according to  claim 1 , wherein the material through-flow opening ( 11 ) is arranged opposite the inlet opening ( 7 ).  
   
   
       3 . The excavating device according to  claim 1 , wherein the material shredder ( 12 ) is at least one of a milling cutter rotor ( 16 ) with chisels mounted thereon and a drum provided with impact strips.  
   
   
       4 . The excavating device according to  claim 1 , wherein the material shredder ( 12 ) includes a drum provided with a hydraulic drive means.  
   
   
       5 . The excavating device according to  claim 1 , wherein the drive means is operable in opposite directions of rotation.  
   
   
       6 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is movably supported on the bucket ( 3 ).  
   
   
       7 . The excavating device according to  claim 1 , wherein the the classifier ( 25 ) is removably supported on the bucket ( 3 ).  
   
   
       8 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is mounted on the bucket ( 3 ) by a rapid connection coupling.  
   
   
       9 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is disposed in a classifier housing ( 24 ) which is fitted, and connectable to the bucket ( 3 ).  
   
   
       10 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is in communication with the material flow-through opening ( 11 ) of the bucket ( 3 ).  
   
   
       11 . The excavating device according to  claim 10 , wherein the shredder ( 12 ) includes a rotor ( 16 ) and a separation line ( 26 ) extends between the classifier ( 25 ) and the bucket ( 3 ) at such an area that the rotor ( 16 ) projects at least partially from the bucket ( 3 ) when the classifier is moved away from the bucket ( 3 ).  
   
   
       12 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is a single stage classifier extending in only one classifying plane.  
   
   
       13 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is a multi-stage classifier having several classifier planes ( 51 ,  52 ).  
   
   
       14 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is a roller classifier.  
   
   
       15 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) is in the form of a sieve classifying device.  
   
   
       16 . The excavating device according to  claim 15 , wherein the sieve classifying device is formed by at least one of rods and ropes extending across a material flow passage.  
   
   
       17 . The excavating device according to  claim 16 , wherein means are provided for vibrating the sieve classifying device.  
   
   
       18 . The excavating device according to  claim 1 , wherein the classifier ( 25 ) has at least one discharge opening ( 36 ) for discharging coarse material not passing through the classifier and at least one opening ( 35 ) for discharging hue particles passing through the classifier ( 25 ).  
   
   
       19 . The excavating device according to  claim 18 , wherein the discharge opening ( 36 ) for coarse material ( 37 ) is provided with a gate.  
   
   
       20 . An attachment classifier ( 25 ) including a housing ( 24 ) with classifying means ( 29  to  34 ) and a connecting structure ( 26 ,  27 ,  28 ) for mounting the classifier ( 25 ) to an excavating apparatus ( 2 ).  
   
   
       21 . An excavating bucket ( 3 ) having a wall arrangement ( 5 ) with an excavation opening ( 7 ) and a material through-flow opening ( 11 ) and a classifier ( 25 ) disposed in a space arranged after the material through-flow opening ( 11 ) outside the material reception space ( 4 ) of the bucket ( 3 ).