Vibration device for soil compaction

Abstract

A vibration device connectable to an operating machine for a relative movement thereof. the device comprising support means couplable to the operating machine, a vibrating unit comprising a vibrating frame supported by the support means and designed to support a tool, and a rotating member supported by the vibrating frame and which can be operated in rotation relative to the vibrating frame around a first axis by first actuation means to generate a vibration of the tool, the rotating member having a respective centre of mass; the rotating member comprising a first body and a second body hinged to the first body along a second axis substantially parallel to the first axis, and second actuation means designed to rotate the second body relative to the first body around the second axis to move the centre of mass relative to the first axis.

1 . A vibration device ( 1 ) used for soil compaction, said device ( 1 ) being connectable to an operating machine for a movement thereof, said device ( 1 ) comprising
 support means ( 2 ) couplable to said operating machine,   a vibrating unit ( 3 ) comprising a vibrating frame ( 30 ) supported by said support means ( 2 ) and designed to support a tool ( 31 ), and a rotating member ( 32 ) supported by said vibrating frame ( 30 ) and which can be operated in rotation with respect to said vibrating frame ( 30 ) around a first axis (A) by first actuation means ( 5 ) to generate a vibration of said tool ( 31 ), said rotating member ( 32 ) having a respective centre of mass,   characterised in that said rotating member ( 32 ) comprises a first body ( 3200 ) and a second body ( 322 ) hinged to said first body ( 3200 ) along a second axis (B) substantially parallel to said first axis (A), and second actuation means ( 324 ) designed to rotate said second body ( 322 ) with respect to said first body ( 3200 ) around said second axis (B) to move said centre of mass with respect to said first axis (A).   
     
     
         2 . The device ( 1 ) according to  claim 1 , characterised in that said second actuation means ( 324 ) comprise a linear actuator ( 324 ) having a first end ( 3241 ) connected to said first body ( 3200 ) and a second end ( 3242 ) connected to said second body ( 322 ). 
     
     
         3 . The device ( 1 ) according to  claim 2 , characterised in that said linear actuator ( 324 ) is housed in a corresponding seat ( 3210 ) provided in said first body ( 3200 ). 
     
     
         4 . The device ( 1 ) according to  claim 1 , characterised in that said second body ( 322 ) is rotatable with respect to said first body ( 3200 ) between a first extreme position, in which said centre of mass is arranged at a first minimum distance from said first axis (A), and a second extreme position, in which said centre of mass is arranged at a second maximum distance from said first axis (A). 
     
     
         5 . The device ( 1 ) according to  claim 4 , characterised in that said first distance is substantially null. 
     
     
         6 . The device ( 1 ) according to  claim 1 , characterised in that it comprises a hydraulic motor ( 5 ) carried by said vibrating frame ( 30 ), said hydraulic motor ( 5 ) implementing said first actuation means ( 5 ). 
     
     
         7 . The device ( 1 ) according to  claim 1 , characterised in that said support means ( 2 ) comprise a support frame ( 20 ) couplable to said operating machine, said support frame ( 20 ) supporting said vibrating frame ( 30 ), shock absorber means ( 4 ) being interposed between said support frame ( 20 ) and said vibrating frame ( 30 ) to prevent a propagation of a vibration of said vibrating unit ( 3 ) to said operating machine. 
     
     
         8 . The device ( 1 ) according to  claim 1 , characterised in that said rotating member ( 32 ) comprises a third body ( 323 ) hinged to said first body ( 3200 ) along said second axis (B), said second actuation means ( 324 ) being designed to rotate said third body ( 323 ) with respect to said first body ( 3200 ) around said second axis (B) to move said centre of mass with respect to said first axis (A). 
     
     
         9 . The device ( 1 ) according to  claim 1 , characterised in that said first body ( 3200 ) comprises a shaft ( 320 ) extending along said first axis (A) and a disc ( 321 ) fitted on said shaft ( 320 ), said second body ( 322 ) being hinged to said disc ( 321 ). 
     
     
         10 . The device ( 1 ) according to  claim 9 , characterised in that said second body ( 322 ) has a first slot ( 3220 ), said shaft ( 320 ) engaging said first slot ( 3220 ).