Mounting arrangement for impact rock-breaker

Abstract

An impact rock breaker includes detachable mounting means and latching means operative to mount the rock breaker on the stick of a backhoe or excavator adjacent the bucket such that the rock breaker can be pivoted between a non-operative position out of the way of the bucket to permit normal operation of the bucket and an operative position latched to the bucket for movement with the bucket for normal operation of the rock breaker.

What is claimed is: 
     
       1. Material-fracturing apparatus for mounting adjacent the bucket of an excavator having a boom and a stick, said apparatus comprising: a housing having a fracturing shank supported by and extending therefrom and means for applying impact blows to said shank for breaking hardened materials;   bracket means extending from .Iadd.and pivotally mounted to .Iaddend.said housing for pivotal connection to the stick of .[.an.]. .Iadd.the .Iaddend.excavator adjacent the bucket of said excavator; .Iadd.   an actuatable hydraulic cylinder pivotally connected to said housing and to said bracket means at locations sufficient for controllably, pivotally moving said housing relative to said bracket means for relative angular adjustment about an axis extending at substantially a right angle to the pivotal connection of said housing to said stick; .Iaddend.   first latch means for latching said housing means to said bucket for manipulation of said fracturing device into operative position by manipulation of said bucket; and   second latch means for latching said housing to said stick to permit free operation of said bucket.   
     
     
       2. The material-fracturing apparatus of claim 1 wherein the material-fracturing shank is mounted for angular adjustment relative to said bucket while latched thereto. .[. 
     
     
       3.  The material-fracturing apparatus of claim 2 wherein said bracket means pivotally connects to said stick at the pivotal connection of said bucket thereto so that said housing and said bucket pivots about the same point on said stick..]. .[.4. The material-fracturing apparatus of claim 3 including means for preventing disengagement of said second latch means until said first latch means is latched to said bucket..]. .[.5. The material-fracturing apparatus of claim 4 wherein said bracket means extends from said housing in a direction opposite that of said fracturing 
     
     
        shank..]. 6. The material-fracturing apparatus of claim 1 wherein said bracket means pivotally connects to said stick at the pivotal connection of said bucket thereto so that said housing and said bucket .[.pivots.]. 
     
     
        .Iadd.pivot .Iaddend.about the same point on said stick. 7. The material-fracturing apparatus of claim 6 including means for preventing disengagement of said second latch means from said stick until said first 
     
     
        latch means is latched to said bucket. 8. The material-fracturing apparatus of claim .[.7.]. .Iadd.1 .Iaddend.wherein said means for applying impact blows to said shank comprises a .[.machanical.]. .Iadd.mechanical .Iaddend.impact device driven by a rotary hydraulic 
     
     
        motor. 9. The apparatus of claim 8 wherein said rotary hydraulic motor is detachably secured to said housing and said second latch means is operative to latch said rotary motor to said stick so that said fracturing apparatus can be readily removed from said stick leaving said motor latched to said stick to thereby avoid the removal of hydraulic lines 
     
     
        therefrom. 10. The material-fracturing apparatus of claim .[.7.]. .Iadd.1 .Iaddend.wherein said bracket means extends from said housing in a 
     
     
        direction opposite that of said fracturing shank. 11. The material-fracturing device of claim 10 wherein said fracturing shank is mounted for relative angular adjustment about a generally vertical axis. 
     
     
          . The material-fracturing apparatus of claim 11 wherein said bracket .Iadd.means .Iaddend.extends at an angle of approximately 45° from 
     
     
        said axis of angular adjustment. 13. The material-fracturing apparatus of claim 1 wherein said means for applying impact blows to said shank comprises a mechanical impact device driven by a rotary hydraulic motor. 
     
     
          . The apparatus of claim 13 wherein said rotary hydraulic motor is detachably secured to said housing and said second latch means is operative to latch said rotary motor to said stick so that said fracturing 
     
     
        apparatus can be readily removed from said stick. .[.15.  The material-fracturing device of claim 1 wherein said housing is pivotally mounted to said bracket for relative angular adjustment about an axis extending at substantially a right angle to the pivotal connection of said 
     
     
        housing to said stick..]. 16. The material-fracturing apparatus of claim .[.15.]. .Iadd.1 .Iaddend.wherein said bracket .Iadd.means .Iaddend.extends at an angle of approximately 45° from said axis of 
     
     
        angular adjustment. 17. Material-fracturing apparatus for mounting on a support arm adjacent an excavating bucket, said apparatus comprising: a support arm having an excavating bucket pivotally connected to one end thereof;   a housing having a fracturing shank supported by and extending therefrom and means for applying impact blows to said shank for breaking hardened materials; .Iadd.said fracturing shank being mounted for angular adjustment relative to said bucket while latched thereto; .Iaddend.   bracket means extending from said housing for pivotal connection to the end of said support arm adjacent and forward of said bucket; .Iadd.   an actuatable hydraulic cylinder pivotally connected to said housing and to said bracket means at locations sufficient for controllably, pivotally moving said fracturing shank; .Iaddend.   first latch means for latching said housing means to said bucket for manipulation of said fracturing apparatus into operative position by manipulation of said bucket; and   second latch means for latching said housing to said stick to permit free   
     
     
        operation of said bucket. .[.18.  The material-fracturing apparatus of claim 17 wherein the material-fracturing shank is mounted for angular 
     
     
        adjustment relative to said bucket while latched thereto..]. 19. The material-fracturing apparatus of claim .[.18.]. .Iadd.17 .Iaddend.wherein said bracket means pivotally connects to said arm at the pivotal connection of said bucket thereto so that said housing and said bucket 
     
     
        pivots about the same point on said stick. 20. The material-fracturing apparatus of claim 19 including means for preventing disengagement of said first latch means until said second latch means is securely latched to 
     
     
        said arm. 21. The material-fracturing apparatus of claim 20 wherein said bracket means extends from said housing in a direction opposite that of 
     
     
        said fracturing shank. 22. The material-fracturing device of claim .[.18.]. .Iadd.17 .Iaddend.wherein said relative angular adjustment is about an axis extending at substantially right angles to the pivotal 
     
     
        connection of said housing to said arm. 23. The material-fracturing device of claim 22 wherein said bracket extends at an angle of approximately 
     
     
        45° from said axis of angular adjustment. 24. The material-fracturing apparatus of claim .[.22.]. .Iadd.17 .Iaddend.wherein said angle of adjustment is up to 40° to either side of a line defining zero adjustment thereof. .Iadd. 25. The material-fracturing apparatus of claim 1, wherein the first latch means includes: a locking detent member connected to the bucket;   a bracket pivotally connected to the material-fracturing apparatus;   a latching rod having first and second end portions and being connected at the first end portion to said bracket and controllably, pivotally movable between latched and unlatched positions in response to a force being exerted at the second end portion of said latching rod, said first end portion and the bracket being engaged with the locking detent member at the latched position and spaced from the locking detent member at the unlatched position. .Iaddend..Iadd. 26. The material-fracturing apparatus of claim 25, wherein the first latch means includes:   a yoke member pivotally connected to the bracket means and to the second end portion of the latching rod; and   a hydraulic cylinder having first and second ends and being connected at one end to the bracket means and at the other end to the yoke member at a location sufficient for moving the latching rod between the latched and unlatched positions. .Iaddend..Iadd. 27. The material-fracturing apparatus of claim 25, wherein the bracket controllably engages the locking detent member at a location on said locking detent member opposite to the latching rod. .Iaddend..Iadd. 28. The material-fracturing apparatus of claim 1, wherein the stick has a latch slot and the second latch means includes:   a bracket having a pin member and being connected to the material fracturing apparatus, said pin member being movable in the latch slot in response to the material fracturing apparatus being moved toward the stick; and   a "C" shaped lock member pivotally connected to the stick and controllably pivotally movable between an unlatched position at which said lock member is spaced from the latch slot and a latched position at which said lock member forcibly engages said pin member in the latch slot. .Iaddend..Iadd. 29. The material-fracturing apparatus of claim 28, wherein the second latch means includes a stop member connected to the material fracturing apparatus and positionable in contact with the stick in response to said lock member forcibly engaging the pin member in the latch slot. .Iaddend. .Iadd. 30. The material-fracturing apparatus of claim 28, wherein the second latch means includes a hydraulic cylinder having first and second ends and being pivotally connected at one end to the lock member and at the other end to the stick and said lock member is pivotally movable in response to actuating said hydraulic cylinder. .Iaddend..Iadd. 31. The material-fracturing apparatus of claim 28, wherein the lock member has a lower leg positionable in engagement with the pin member in response to moving the lock member toward the latched position. .Iaddend..Iadd. 32. The material fracturing apparatus of claim 1 including a rotator plate pivotally mounted in said housing and defining a pivot support axis with said housing and wherein the hydraulic cylinder is pivotally connected to said housing at said rotator plate. .Iaddend..Iadd. 33. The material fracturing apparatus of claim 32 including a bracket secured to said housing and positioned in engagement with said rotator plate and wherein said housing pivotally moves about said pivot support axis in response to actuation of said hydraulic cylinder. .Iaddend..Iadd. 34. The material fracturing apparatus of claim 32 wherein said material fracturing apparatus has a center line passing through said pivot support axis and said fracturing shank is rotatable about 40° to either side of said center line. .Iaddend.