trunnion lifting capacities
trunnion lifting capacities
(OP)
hello
I am looking for an insight for trunnion capacities during lifting operations in the static state during the 0-90 degree change in wire rope sling angle.
Have been looking for calculations to start getting my head round this but so far have come up short
Any help apprecieted
I am looking for an insight for trunnion capacities during lifting operations in the static state during the 0-90 degree change in wire rope sling angle.
Have been looking for calculations to start getting my head round this but so far have come up short
Any help apprecieted





RE: trunnion lifting capacities
Regards,
Mike
RE: trunnion lifting capacities
RE: trunnion lifting capacities
WRC-xxx typically uses a vessel coordinate system, Longitudinal, Circumferential, Radial. You will have to apply the load appropriately. Normally only one shear load (causing one moment) involved. If lifting from horizontal to vertical you should check two or more directions of load application and design for the worst. Note no pressure involved, but good practice to apply any CA to the shell.
Regards,
Mike
RE: trunnion lifting capacities
Been reading some interesting material in the Pressure Vessel Design by Moss.
But the calculations seem pretty minimal especially for calculating the load at any angle.
RE: trunnion lifting capacities
Regards,
Mike
RE: trunnion lifting capacities
RE: trunnion lifting capacities
RE: trunnion lifting capacities
the pipe section is starting horizontal at grade and being tailed into vertical position as shown in drg. therefore wire sling angles move from 0-90 degrees throughout lift. wire slings will be cradled round trunnion therefore as good as parallel after accounting length to the spreader beam.
cheers Mike
RE: trunnion lifting capacities
Regards,
Mike
RE: trunnion lifting capacities
goin by whats in PVD seems to be the way forward thought that there would be more in it than that !!
RE: trunnion lifting capacities
RE: trunnion lifting capacities
RE: trunnion lifting capacities
RE: trunnion lifting capacities
RE: trunnion lifting capacities