1960 aemufydkif;ESifh 1970 ESpfrsm;twGif; pwiftoHk;jyKonf/ S.W.L 15 to S.W.L 525 txd&Sdonf/ "V" shape &Sdaom stays rsm;rygonfh samson posts (mast) 2 acsmif;\ center line wGif derrick udkwyfqif xm;onf/
xdkYaMumifh F.W.D ESifh A.F.T hatch 2 ckvHk;odkY cargo runner hook udk ajymif;ay;jcif;jzifh operate vkyfEdkifonf/ mast post wckwGif hoisting winch wckESifh span (guy pendant) winch wpfckwyf xm;NyD; pkpkaygif; winch
4ckomvdktyfonf/ hoisting winch 2vHk;twGuf control lever wckESifh span winch 2 vHk;twGuf lever wpfckpkpkaygif; lever 2 ckjzifh winch 4 vkH;udk vlwpfa,mufwnf;jzifh operate vkyfEdkifonf/
tjcm; cargo gear rsm;xuf stuelcken derrick \ advantages rsm;rSm-
1. Guys ESifh preventers rsm;rvdktyfjcif;? tackle work r&Sdjcif; (tackle rsm;wyfqif&jcif; prepared vkyf&jcif;) 2. Mast 2ckMum;rS derrick udk F.W.D or A.F.Todk. swing vkyffEkdifojzifh F.W.D or A.F.T wGif&Sdaom 3. Derrick (winch) rsm;udk vlwa,mufxJjzifh controllers or remote control jzifhoperate jzifhvkyfEkdifjcif;/ 4. Largely maintainance - free jzpfjcif; up to 4 years txd bearing, sheave, swivels ESifh gooseneck rsm;udk
maintaince vkyf&efrvdkyg friction rSm 2% cefYom&Sdonf/
5. Winch rsm;wGif full or half load power ratio 2ckom&SdaomaMumifh cargo handling speed rsm;udk vdktyfovdk
ajymif;vJEdkifjcif;/
6. Samson posts rsm;\ F.W.D ESifh A.F.T wGif union purchase rig vkyfEdkifaom light derricks 2
acsmif;pDyg0ifojzifh stuelken derrick jzifh heavy load udk hatch wckwGif operate vkyfaepOf wjcm;wpfbufwGif union purchse ESifhwpfNydKifwnf; operate vkyfEdkifjcif;/
7. Stuelken container masts rsm;onf 3 to 5 tonnes &Sdaom load rsm;udk 2 min cefUtwGif; trans ship
vkyfEdkifjcif; samson post wpfacsmif;wGif light derrick wpfckxJomxm;NyD;4if;ukd F.W.D and A.F.T
odkUajymif;Ekdifatmif mast \ out board side wGifwyfxm;onf trunionstool jzifh support vkyfxm;onf/
xYdkaMumifh post 2 acsmif;wGif derrick wpfpHkomwyfxm;ojzifh economy jzpfonf derrick 2 acsmif;pm
tukeftusoufomonf/
8. Vessel wGif suffiencent loading stability &SdvQif stuelken derrick capicity udkBudKufoavmuf wnf
aqmufEdkifonfh S.W.L limit r&Sdjcif;/
9. Vessel wGif suffiencent derrick 2acsmif;ygvQif 4if;wdkU\ S.W.L aygif;v'f&Sdaom load udk rEdkifonf/
xdkuJhodkUr&mwGif traverse (derrick rsm;udkaemufrSqdkif;xm;aomBudK;) rvdktyfyg/ Oyrm- S.W.L 130 tons
&Sdaom derrick 2 acsmif;jzifh 260 tons load udk rEdkifonf/
* Type of stuelken ay:rlwnfí hoisting purchase udk F.W.D and A.F.T hatch rsm;odkY ajymif;aom method
rsm; uGmoGm;onf/
1. Rotary type
Crago tackle udk F.W.D and A.F.T odkUajymif;&ef boom udk vertical position wGif 180. rotate vkyfí
ajymif;onf/ yxrqHk;xkwfvkyfonfh design jzpfonf S.W.L up to 60 tons xd rEkdifonf/ oabFm 15 pD;cefY
wGifom&Sdonf/
2. Pendulum type (em&DcsdefoD;)
Cargo tackle udk derrick boom \ one side wGif rig vkyfxm;onf/ xdkUaMumifh boom udk F.W.D and A.F.T swing vkyfvQif cargo tackle onf automatically ajymif;NyD;om;jzpfoGm;onf/
3. Double pendulum
Pendulum type ESifh principle wlonf? odkUaomf cargo tackle 2 ckukd boom \ both side wGif rig vkyfxm;onf tackle lower block 2 ckudk cross bar (union table) ESifh attached vkyfxm;onf/ cargo tackle2 ck udk union table
rSjzKwfNyD; boom udk swing vkyfvQif cargo tackle 2 cktjcm; hatch waybufajymif;rnf/ xdktcg union table
udkjyefwyfvQif F.W.D and A.F.T ajymif;NyD;om;jzpfonf/ boom udkwpfzufrSwpfbufodkU swing vkyf&mwGif boom
udk vertical position a&muf&efESifh vertical position rStjcm;wzufodkU bull wire jzifhqGJ&onf/
4.Split purchase
Design onf pendulum type uhJodkY boom \ one side wGif cargo tackle udk rig vkyfxm;onf/ odkUaomf cargo tackle 2 ckoHk;xm;onf/ (load enf;aomtcg hoisting speed rsm;rnf/)
5.Fork type
Single pendulum cargo tackle udkoHk;xm;onf/ wzufrSwzufodkUOD;pGm boom udk cargo tackle \ lower block rS hook (ramshorn hook) udkjzKwf&onf? xdkUaemuf hoisting fall (cargo runner) udkqGJNyD; fork 2 ckjcm;wGif cargo tackle 2 ckyl;NyD; vertical twdkif;jzpfonfhwdkifatmifwdkufyg/ (¤if;tcsdef cargo tackle \ lower block
onftay:wGif&SdNyD; upper block onfatmufwGif a&mufaernf/ xdkUaemuf boom udk operate vkyfrnf/ hatch
bufodkU bull wire udkoHk;NyD; swing vkyfyg cargo tackle \ lower block onfvnf; ¤if; hatch bufodkU a&mufoGm;rnf/
xdkUaemuf hook udkjyefwyfNyD; operate vkyfEdkifonf/
6.Container type
¤if;onf Pendulum type ESihfwyHkpHwnf;jzpfonf/ odkUaomf cargo tackle \ hauling part udk (span tackle operation force rsm;udk rxdcdkufapatmifcsdefpí) boom \ heel wGif&Sdaom goose neck bearing rSxGufatmif lead block rsm;jzifh guide vkyfxm;onf/ xdkuJhodkUvkyfxm;ojzifh boom out board position wGif cargo handling
vkyf&mü cargo gear \ stability vGefpGmaumif;aponf rapid swinging speed jzifh operate vkyfEdkifonf/ (txl;ojzifh container handling wGifvQifjrefaponf/)
7.Log/ lumber type
S.W.L rwlaom boom 2 acsmif;udk fore and A.F.T hatch 2 ckpvHk;wGifwpfjydKifeuf operate vkyfEdkif&ef high speed ESifh operate vkyfEdkifNyD; stable design &SdaomaMumifh logs rsm;udk handling vkyff&efoifhavsmfonf/
8. High speed version
Span wire winch rsm;\ either side wGif disconnect vkyfEdkifaom winch drum wpfvHk;xnfhxm;onf span wire udk reeving (&pf)&onf length wpf0ufavQmhusNyD; load vnf;wpf0ufavQmhoGm;onf/ odkUaomf swining speed
2 qwufonf/
EXTENPORE GEAR (Without Study or Preparation Gear)
¤if;wdkYudk Wooden or steel spars jzifhjyKvkyfxm;jyD;? ¤if; spars udk topping lift jzifh tenf;qHk; 45 degrees Angle xm;í axmifxm;&rnf/ Sheer rsm;tMum;wGif 60 to 90 degrees cGmxm;oifhonf/ ¤if; spars udk strengthened vkyf&ef fishing (securing stout timbers jzifh tv,fwGif spars \t&Snf oHk;yHkESpfyHkcefYjzifh lashing or bolt jzifh zrf;xm;onf/ Spars ESpfacsmif;udkzrf;xm;aom strops rsm; avQmrxGuf&ef atmufajcrS Collar
distance udkac:onf/ Splay Tackles rsm;udk Spars rsm;\atmufajcrsm; um;rxGufoGm;ap&ef txdef;oabmjzifh
wyfay;&rnf/ splay tackles t&SnfrSm sheer twGuf effective length \oHk;yHkwpfyHkjzpfjyD; Gym twGuf effective length \ wpf0ufjzpfonf/ spars rsm;\atmufajcwGif Shoe rsm;xnfhay;&rnf/ Shoe udk timber
odkYr[kwf Sand bag rsm;jzifh jyKvkyfEkdifonf/
Single Spars
Ordinary derrick uJhodkYjzpfonf/ ¤if;\ Heel udk Hatch timber udk Shoe tjzpfoHk;í wyfqif&rnf/ Spars \ Heel udk tackle oHk;ck odkYr[kwf av;ckjzifh aocsmcGmí Secure vkyf&rnf/ Single Spars udktoHk;jyK
jcif;jzifh Weight wpfckudk Pick up vkyfjyD; tjcm;wpfae&modkY Swing vkyfjyD; a&TUajymif;Edkifonf/ (Certain limit only)
Two Spars (Sheer legs)
Spars ESpfacsmif;udk Deck ay:wGifcsjyD; Head ESpfckudk Crutch Lashing vkyfyg/ Heel ESpfckudk 30 to 40 degree cGmxm;yg/ Crutch rSaeí topping lift udkcsnfyg/ Martingale (forward guy used to prevent backward toppling) udk Crutch wGif Secure vkyfyg/ Lifting tackle udkvnf;wyfqifyg/ Weigth udkrpOfwGif ab;bufodkY Swing rjzpfap&ef owdjyK&rnf/ odkYr[kwf spars wpfacsmif;\ heel onf deck ESifh vGwfoGm;jyD; jydK usEkdifonf/ Sheer leg udkoHk;jcif;jzifh deck ay:wGif forward or aft direction odkY sheer leg ESpfckudk 20º toward the weight
odkY apmif;xm;jyD; weight udkrí opposite direction odkY 40º cefY swing vkyfjyD; weight udkjyefcsjcif;jzifh deck
ay:wGifa&TU,lEdkifonf/
Three Spars (Tripod or the Gym)
Spars oHk;acsmif;udk tripod tjzpf wyfqiftoHk;jyKonf/ yxrOD;pGm spars ESpfacsmif;udk sheer leg uJhodkY deck ay:wGif lashing vkyfyg/ ¤if; spars ESpfacsmif;udk cheeks [kac:onf/ wwd, spars odkYr[kwf prypole
udk cheeks ESpfacsmif;\ crutch atmufem;rSmxnfhí secure vkyfyg/ ¤if; tripod wGif splay tackle oHkckESifh lifting purchase omvdktyfonf/ Gym jzifh weight udkr&mwGif tripod \ base triangle tjyifodkY swing rjzpfap&ef
owdjyK&rnf/ Gym udk heavy weight rsm; vertical position odkYrjyD;jyefcs&eftwGufom toHk;jyKonf/ Oyrm- windlass shaft rsm;udk repair vkyf&ef rjyD; jyefcszdkY&eftoHk;jyKwwfonf/
ROTARY