hoist types and configurations

7/25/2019 Hoist Types and Configurations

1/23

1

Hoist Types and Configurations

Dr. B. C. Paul 1999

With Credit to Dr. H. Sevim for Original Book


2/23

2

Major Components of Hoisting

System Shaft - a near vertial hole in ground through

!hih thing" an #e rai"ed and lo!ered

Head-frame - Steel "truture over hole u"ed forlining u$ onve%ane and direting a#le"

Conve%ane - &hat ontainer for #ath

movement of argo - name varie" !itha$$liation


3/23

'

Support Features for Conveyance

Sine Hoi"t i" a #ath movement $roe"" need"

loading and unloading feature"

Shaft feature" a loading $oket for material tran"fer(uikl% to onve%ane

)"uall% a "urge #in or ore $a"" to hold ore and

"mooth "urge" in $rodution !ith need to kee$ hoi"t

running "teadil%

Headframe u"uall% ha" dum$ $oket to "ide to

(uikl% ath di"harge from onve%ane


4/23

*

Rope Handling Features

Conve%ane moved #% ro$e" or a#le"

Headframe ha" ro$e handling and aligning

failitie" Often have a large Sheath or Wheel at to$ that

rediret" the a#le

+a% #e a "torage drum for ro$e to one "ide or"ometime" at to$ of headframe

+a% have hoi"t hou"e on to$ of frame


5/23

,

Typical Hoisting System


6/23

Two Major Types of Shafts

nlined Shaft

/ 0ot Common toda%

/ Stee$er than deline/ n the !all haulage "%"tem" in o$en $it"

/ +a% follo! vein in "mall "ale metal mine to limit

develo$ment to vein

ertial Shaft

/ Boring &ehnologie" u$ to medium "ied

/ 3arge "till need onventional "inking


7/23

4

Uses for Hoisting Systems

+an Cage" - Haul men and "u$$l%

)tilit% Hoi"t" - +o"tl% for "u$$l% handling

5mergen% Hoi"t" - often in "mall "haft to

get fe! $eo$le out in emergen%

Prodution Hoi"t"

/ Will #e fou" of thi" unit

/ )"ed for removing $a% $rodut


8/23

6

Application Hoist nfluences

what is raised and lowered When men and "u$$lie" are handled u"uall%

alled a age

/ "ome ma% #e multi-level

Prodution Handling - Called Ski$"

Ski$" need !a% to get material in and out


9/23

9

S!ip Configurations

Solid and o$en at to$

/ need "$eial e(ui$ment to dum$

O$en at to$ - #ottom o$en"

/ "till need to #e unload !ithout dum$ing load

do!n the "haft

Side di"harge - high $rodution/ o$en off to "ide of to$

/ "ide o$en" for ea"% di"harge to dum$ing $oket


10/23

17

Types of Hoists

Drum Hoi"t

/ ro$e i" "tored on drum

8eo$e Hoi"t

/ ro$e u"t $a""e" over !heel at to$ of headframe

/ mu"t have a #alaning load on other "ide

/ ro$e u"t "it" over !heel and i" held #% frition

/ o#viou"l% "ome limit" on ho! hard an

aelerate thi"


11/23

11

"rum Hoist Configurations

Sim$le Single Drum Hoi"t

/ drum !ith ro$e !ra$$ed around it

:u"t lo!er" the "ki$ to an%$lae in range of ro$e nherentl% out of #alane - #ig load do!n "haft

!hen at e;ten"ion

Out #alane make" "lo! and "uita#le for onl%limited de$th

5a"il% "erve" multi$le level"


12/23

12

Hoist Rope "rive Assem#lies


13/23

1'

"rum Hoist Configurations

Dou#le Drum Hoi"t/ &!o ro$e" !ound in o$$o"ite diretion"

/ Stik a load on eah ro$e

/ Create" a #alane load - lo!er "omething !hen$ulling "omething u$ - le"" energ% and "train - an

hit greater de$th

+a% $ut a ounter !eight on one "ide - an then

go to an% level +a% $ut t!o "ki$" in #alane - #ut no! an onl%

"erve one level and e;$et "ki$" to line u$ right.


14/23

1*

"rum Hoist Arrangements

Dou#le Drum !ith "e$arated drum" - one

luthed

un" "hort di"tane" out of #alane


15/23

1,

"rum Hoist Types

Dou#le Drum Divided Both Side" Cluthed

?dding "till more inertia and o"t

Can adu"t for multi-level hoi"ting #ut ould

do that !ith u"t one drum luthed

)"uall% done for man hoi"t" - need to #e

"ure that "omething !ill #e a#le to run if it

ha" to


16/23

1

$eird and $onderful "rum Tric!s Sim$le drum i" a %linder

/ $ro#lem i" !ant to "tart hard - #ut there" lot ofinertia and tremendou" tor

Conial Drum

/ leverage to "$in u$ to "$eed

/ Sie an get "ar% fa"t

C%lindro-Conial

/ %linder for "tarting ro$e - then flatten out to one

B%%lindro-Conial

/ often ree$ a!a% from load $oket and then hit it


17/23

14

%eope &or Friction' Hoist

Ha" to hoi"t in #alane

Control on inertia

/ 0o large ro$e "torage drum"

/ 0o ro$e !ra$$ed around ever%thing @enerall% le"" o"tl%

0ot a" Auik a" Drum - an=t $eel out the frition on

the !heel

Sometime" have to $ut e;tra tare load to kee$ the

#alane

Ho! in the hek are !e going to "erve multi$le level"


18/23

16

The Multilevel (ro#lem for

%eope Hoists f u"t one level don=t are

Can do a "ki$ and ounter !eight and "erve

multi-level"/ if %our !illing to ut %our $rodution in half

Can u"e multi$le !heel"

/ eah !heel ha" a "ki$ and ounter !eight

/ if t!o level" an tr% to "ki$ $air" not at all

ommon


19/23

19

Choosing )etween "rum and

%eope 3imited de$th favor" Drum Hoi"t"

/ >o$e Storage i" le"" "are%

/ Pe$$% aeleration #oo"t" $rodution +ulti-level favor" Drum Hoi"t #ut 8eo$e an

$la% too

@reater De$th favor" 8eo$e/ #elo! a#out 'E777 feet drum" u"uall% an=t om$ete

/ 8eo$e an do !ell on ver% "hallo! too


20/23

27

Rope Handling Comparisons 8eo$e Hoi"t

/ Often u"e" "everal ro$e" on one "ki$

/ &he ro$e" #end in $arallel "o no differential t!i"ting

/ +ulti-ro$e hel$" e;$lain greater "ervie de$th

/ +ulti-ro$e give" more frition "urfae area

Drum Hoi"t

/ ha" to #e "ingle ro$e to avoid $ile-u$ and differential

#ending/ ever inrea"ing ro$e "ie fore" ever large drum to

avoid hard t!i"t on ro$e


21/23

The Mystery of the Tail Rope

21

Wh% !ould leave a ro$e hanging do!n

? "haft

Wire ro$e i" ver% heav% and an #e a #ig

Part of the load.


22/23

Consider a %eope Hoist

22

Balaned load" on eah "ide are im$ortant to $revent "liding

Over the "heave !heel.

What i" out of #alane here

&he load in one of the "oo$"

? #ig length of ro$e


23/23

*ow $hat is +ut of )alance,

2'

&he load in one of the "ki$"

5ven though drum hoi"t" don=t have the "li$$ing i""ue

&he un#alaned load i" !hat the hoi"t motor ha" to !ork

?gain"t F un#alane i" #ad here too.

hoist types and configurations

Documents