Claims
- 1. A container jib crane and system having a pivot post held vertical, at least one jib crane having a jib crane arm mounted to radially revolve around said post at a fixed height, a loadspreader and support means therefore mounted to revolve horizontally about the end of said arm and move up and down thereon, mechanical connecting means for rotating said support means on said arm in step with the rotation of said arm to keep said loadspreader parallelly positioned in one direction as the arm is revolved, means for lifting and lowering the support means to lift and lower said loadspreader to transfer loads in parallel positions, and means for supporting said loadspreader to move laterally radially to said pivot post to align a vehicle when engaged therewith over a distance of travel past the pivot post.
- 2. A system as in claim 1, said load engaging and support means including a loadspreader, and means for extending and retracting said, loadspreader radially relative to said pivot to align a vehicle over a distance of travel past the loader.
- 3. A system as in claim 1, said load engaging and support means including a central vertical shaft mounted to rotate on its vertical axis on said jib crane arm, said means for rotating said loadspreader and support means being a chain and a first sprocket fixed concentric on said pivot post and a second sprocket of equal pitch and diameter as said first sprocket in line supported to rotate on said locating arm and through which said central vertical shaft is central and free to slide up and down, and means for keying said second sprocket to turn said support means, said chain connecting said sprockets to maintain an alignment of said loadspreader and support means as it is moved up and down and about said pivot post.
- 4. A system as in claim 3, said means for keying being a ball spline on said&lift shaft and a ball spline collar thereover secured to rotate on said locating arm and to which said second sprocket is fixed.
- 5. A system as in claim 1, said means for rotating said loadspreader and support means being shafting and beveled gears connected by said shafting to rotate said loadspreader equally in the opposite direction from said arm.
- 6. A system as in claim 1, said means for lifting and lowering 2 including a vertical lift shaft mounted to slide up and down on the outer end of the jib crane arm, a lift arm pivotally mounted over the jib crane arm to swing up and down out over said lift shaft, mechanical means linking said lift arm and said lift shaft together to lift and lower the loadspreader therewith.
- 7. A system as in claim 1, said jib crane arm comprising a right and a left side arm each pivoted on said pivot post, the first pivot, and each having two lengths, two pivots being a pivot pin joining these two lengths as at an elbow on each side arm and both sides joined about said support means including a lift shaft as a fourth pivot; four equal sprockets horizontally aligned, one on each of the four pivots, a chain joining said sprockets in all positions so said arm can extend and retract said loadspreader and support means relative to said pivot post while maintaining orientation in one direction.
- 8. A system as in claim 1, said jib crane arm comprising two lengths, a vertical elbow pin connecting said lengths together, said means for lifting and lowering including a lift shaft, two equal sprockets and chain connecting said pivot post and said elbow pin, and two other equal sprockets and chain connecting to turn with the said sprocket on said elbow pin and said lift shaft to rotate together so said locating arm can be extended and retracted relative to said pivot post while holding said load engaging and support means in a preselected direction.
- 9. A system as in claim 7, except gearing and shafting replacing the sprockets and chain, a bevel gear on each said pivot and a second bevel gear meshing therewith shafting connecting adjacent second bevel gears.
- 10. A system as in claim 8, except gears and shafts replacing the sprockets and chains, a bevel gear on each said pivot and a second bevel gear meshing therewith shafting connecting adjacent second bevel gears.
- 11. In a system as in claim 1, said loadspreader having alignment columns, two spaced apart along one side for aligning a cargo container on a well car and two spaced on the opposite side for aligning a cargo container on a semitrailer, said alignment columns being operable to swing up and down on each side together.
- 12. In a system as in claim 1, said loadspreader having two alignment columns along one side of the loadspreader, each said column having a stepped engaging end with an upper forward step to engage a cargo container or semitrailer and a lower back step to engage a well car, and means for raising and lowering the columns relative to the loadspreader to align the loadspreader for transfer of a container on either a semitrailer or well car.
Parent Case Info
This application claims Priority of Provisional Applications Ser. No. 60/022,422, dated Aug. 05, 1996 and Ser. No. 60/044,935, dated Apr. 25, 1997.
US Referenced Citations (20)
Foreign Referenced Citations (7)
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DEX |
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