Hydraulic boom stabilization device
View Patent ↗A boom assembly includes a frame, a boom, a boom stabilization cylinder, and a feedback cylinder. The boom is rotatably mounted to the frame to rotate about a first axis. The boom stabilization cylinder is coupled to the boom to resist rotational deflection of the boom about the first axis. The feedback cylinder is coupled to a counterbalancing weight. The feedback cylinder is hydraulically coupled to the boom stabilization cylinder. Movement of the boom stabilization cylinder to resist deflection of the boom causes corresponding movement of the feedback cylinder to lift the counterbalancing weight.
1. A boom assembly, comprising:
a frame;
a boom rotatably mounted to the frame to rotate about a first axis;
a boom stabilization cylinder coupled to the boom to resist rotational deflection of the boom about the first axis; and
a feedback cylinder coupled to a counterbalancing weight, wherein the feedback cylinder is hydraulically coupled to the boom stabilization cylinder, and movement of the boom stabilization cylinder to resist deflection of the boom causes corresponding movement of the feedback cylinder to lift the counterbalancing weight.
2. The boom assembly of claim 1 , wherein the frame comprises a slide pole, the boom being rotatably mounted to the slide pole.
3. The boom assembly of claim 2 , further comprising linkage operable to convert rotational deflection of the boom about the first axis to vertical lifting of the boom along the slide pole.
4. The boom assembly of claim 3 , wherein the linkage further comprises a cable coupled between the frame and the boom.
5. The boom assembly of claim 3 , further comprising a swing arm coupled to the slide pole and the boom, wherein the linkage is operable to cause the swing arm to lift responsive to rotational deflection of the boom, and the stabilization cylinder is coupled between the frame and the swing arm to resist vertical movement of the swing arm.
6. The boom assembly of claim 1 , wherein the feedback cylinder further comprises a boom lift cylinder coupled between the frame and the boom to move the boom about a second axis to raise or lower the boom, and the counterbalancing weight further comprises a weight component of the boom generated by the movement of the boom about the second axis.
7. The boom assembly of claim 1 , wherein the boom stabilization cylinder has a first rod chamber and a first piston chamber, the feedback cylinder has a second rod chamber and a second piston chamber, and the rod chamber of the boom stabilization cylinder is coupled to the rod chamber of the feedback cylinder.
8. The boom assembly of claim 7 , further comprising an accumulator coupled between the first rod chamber and the second rod chamber.
9. The boom assembly of claim 1 , further comprising a control valve operable to isolate the boom stabilization cylinder from the feedback cylinder responsive to a control signal.
10. A boom assembly, comprising:
a frame;
a boom rotatably mounted to the frame to rotate about a first axis;
a boom lift cylinder mounted between the frame and the boom and operable to move the boom about a second axis to raise or lower the boom; and
a boom stabilization cylinder coupled to the boom to resist rotational deflection of the boom about the first axis; wherein the boom stabilization cylinder is hydraulically coupled to the boom lift cylinder, and movement of the boom stabilization cylinder to resist deflection of the boom causes corresponding movement of the boom lift cylinder to rotate the boom about the second axis.
11. The boom assembly of claim 10 , wherein the frame comprises a slide pole, the boom being rotatably mounted to the slide pole.
12. The boom assembly of claim 11 , further comprising linkage operable to convert rotational deflection of the boom about the first axis to vertical lifting of the boom along the slide pole.
13. The boom assembly of claim 12 , wherein the linkage further comprises a cable coupled between the frame and the boom.
14. The boom assembly of claim 12 , further comprising a swing arm coupled to the slide pole and the boom, wherein the linkage is operable to cause the swing arm to lift responsive to rotational deflection of the boom, and the stabilization cylinder is coupled between the frame and the swing arm to resist vertical movement of the swing arm.
15. The boom assembly of claim 10 , wherein the boom stabilization cylinder has a first rod chamber and a first piston chamber, the boom lift cylinder has a second rod chamber and a second piston chamber, and the rod chamber of the boom stabilization cylinder is coupled to the rod chamber of the boom lift cylinder.
16. The boom assembly of claim 15 , further comprising an accumulator coupled between the first rod chamber and the second rod chamber.
17. The boom assembly of claim 10 , further comprising:
a first control valve operable control the boom lift cylinder to move the boom about the second axis to raise or lower the boom; and
a second control valve operable to isolate the boom stabilization cylinder from the boom lift cylinder responsive to a control signal.