DECam Lifting Fixture summary Requirements To be used

DECam – Lifting Fixture summary Requirements: - To be used on lifting and rotation for both PFC/DECAM instruments - Requires the low headroom as possible - Including Scale function HEADROOM: -Two building references (CH 2150. 005 -C 128 / ACECO C-5360 -1) shows than gap between lower hook surface at max. height and the top of the PF cage is 24 -25”, about 640 mm - Field measurement shows that this gap is larger plus 50 cm, up to 114 cm, this extra space is not being consider on the design. 1 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary ELEMENT DECAM WEIGHT Summary at docdb 5756 Gross weight to be lifted ~10 tons Currently FNAL to confirm 2 WEIGHT COMMENTS DRAWING [lb] [kg] PF CAGE 4249 -V 2 FNAL 480060 4936 2236 STRONGBACK x 2 4249 -V 2 FNAL 480215 1938 878 F 8 CW 4357 -v 2 ANL 030201 2004 908 LIGHT BAFFLE 5560 -V 1 FNAL 480234 65 29 HEXAPOD 3865 -v 1 ADS 101147 2253 1021 CORRECTOR (body-cone-shroud) 3319 -v 3 FNAL 436864 3671 1663 OPTICS (cell+lens x 5) 3771 -v 3 DOC 1337 606 FCMA 3771 -v 3 DOC 727 329 Without filters inside IMAGER 3204 -v 3 DOC 1043 472 C 5 assy not included TOP PLATE + LIGHT CWs 5560 -v 1 FNAL 480390 1020 462 HEAVY TOP CWs 5560 -v 1 FNAL 480416 443 201 IMAGER TEST WEIGHT NO REF FNAL 480149 1008 457 TOP CAP 5560 -v 1 FNAL 480330 500 227 Gross Total 20945 9488 without strongbacks IMAGER DETAIL - Derylo 3204 -v 3 19007 8610 Gross weight without lifting fixtures ~8. 6 tons SOURCE REFERENCE DOCDB ANL reference withour cover Defined by ADS - to be confirmed see detail fins not included W [lb] Vessel 253 Back Cover 150 Back Cover other 130 FPSP 113 VIB ASSY 42 Monsoon 283 Crates x 4 LN 2 15 Inner loop Wiring 33 Exterior LN 2 piping 21 C 5 assembly 304 Detectors Vacuum Interface 1019 Included at Corrector FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Rigging and scale elements – commercial issues selected: - - RON/EILON engineering Dynamometer 2501 -S 25: Shackle type. 0. 1% accuracy, tested for 20, 000 cycles at 150%, calibration certified, two wireless displays. Low Headroom: 150 mm Shackle Crosby wide-body G-2160 (for slings) forged, tested to 200% of SWL (30 tons) 3 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: - System capacity design SWL: 25 tons - For DECAM CAGE: To allow shackle lifting + scale function and rotation as spreader bar LINE CONFIGURATION: FOR LARGE CRANE OPERATIONS 4 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: - System capacity design SWL: 25 tons – 11” headroom to load cell - To allow shackle lifting + scale function and rotation as spreader bar 5 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: - System capacity design SWL: 25 tons - To allow shackle lifting + scale function and rotation as spreader bar 6 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: - Sling angle to horizontal : 45 deg. 90 between them (angle factor 0. 707 included) Length and SWL selected: 11 ft – 26, 400 lbs each, round endless configuration (as FNAL march test) 7 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: - Sling angle to horizontal : 45 deg. 90 between them (angle factor included) - Length and SWL determined – 10 ft, 25000 lbs each – endless 8 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: 9 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: no interferences with ITW 10 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: rotation slings to swivel points. Rotation force determined based on CGs calculations – docdb 5756 11 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: rotation slings to swivel points. Rotation force determined based on CGs calculations Doc. DB 5756 – Force applied at the top of the cage with safety rope/winch -Worst case: 1126 kg Cage+SB+F 8 CW - Empty Cage: good balance, force required 5 kg - Full Assembly force ~ 500 kg due CG offset to review 12 FMA fmunoz@ctio. noao. edu

DECam – Lifting Fixture summary Lifting fixture design: - FEA (@25 ton) shows than critical piece is mid-position Pin. Currently pass a second FEA iteration with strength alloy available. - Drawings currently available. 13 FMA fmunoz@ctio. noao. edu