Operative arm excavator including linkage generally interposed between bucket and hydraulic actuator
View Patent ↗An operative arm of an earth moving machine includes a dipper stick having a distal end, a bucket coupled to the distal end of the dipper stick, a hydraulic actuator coupled to the dipper stick, and a linkage generally interposed between the bucket and the hydraulic actuator. The linkage includes the following items: (i) a first lever rotatably coupled to the dipper stick and the hydraulic actuator, (ii) a linear actuator rotatably coupled to the dipper stick, (iii) a second lever rotatably coupled to the first lever and the linear actuator, and (iv) a bucket lever interconnecting the second lever, the linear actuator and the bucket.
1. An operative arm of an earth moving machine, the operative arm comprising:
a dipper stick having a distal end;
a bucket coupled to the distal end of the dipper stick;
a hydraulic actuator coupled to the dipper stick; and
a linkage generally interposed between the bucket and the hydraulic actuator, the linkage comprising: (i) a first lever rotatably coupled to the dipper stick and the hydraulic actuator, (ii) a linear actuator rotatably coupled to the dipper stick, (iii) a second lever rotatably coupled to the first lever and the linear actuator, and (iv) a bucket lever interconnecting the second lever, the linear actuator and the bucket.
2. The operative arm according to claim 1 , wherein the linear actuator is a linear hydraulic actuator.
3. The operative arm according to claim 1 , wherein the bucket lever is shorter than the second lever.
4. The operative arm according to claim 1 , wherein the linear actuator further comprises a remote actuator.