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Demag DH hoist unitsThe solution to meetspecial requirements
Demag DH hoist units – for solutions beyondclassic crane applicationsDemag DH hoist units are not only designed forconventional lifting operations on cranes andmonorails, but are also ideal for specialapplications. Installed as stationary or travellingunits, they are more than just hoists – thanks togentle handling with high load capacities andflexible integration into almost any superstructure,they can be used as key elements in lifting stations,winch arrangements and architectural applications,for example.Tough solutionDH hoist units are specially designed for ruggedapplications to ensure reliable operation even inthe toughest environments, such as in foundries orgalvanising facilities which have high ambienttemperatures, high dust levels and aggressiveatmospheres.Synchronised DH hoist units lift and lower a roofsegment in a shopping centreDH hoist unit with two hook lead-offs for transportingmould jigs without any hook travelKey features Rugged design – tried and tested in thousands of applicationsworldwide Simple integration into any design High switching frequencies and high duty factors Precise positioning with mechanical microspeed Load capacity up to 100 t Hook path up to 104 m02256882464038318Versatile applicationTheir modular design concept and flexible mounting arrangements enable DH hoist units to beintegrated into almost any superstructure withease. Their many variants and options facilitate analmost unlimited range of applications.
Special technical features to meetvarious operating requirements High number of starts/stops and high duty factorthanks to mechanical microspeed and conicalrotor brake motors; also for high ambienttemperatures Highly precise positioning with mechanicalmicrospeed Various rope drum designs available: one, two,four, six and eight grooves Limit positions reliably monitored by precisionlimit switches that are driven direct by the drum Rugged, low-maintenance contactor control forreliable operation also in arduous environments Simple integration into any designTorsionally rigid frame open on all sides – forbolted connection on all sidesRope lead-off possible in any directionRope reeving arrangement configured to meetspecific technical requirementsFreely selectable lifting speeds over a wide rangeBasic hoist with electric enclosure, optionally withor without electric equipmentWide variety of options available, such as themechanical coupling of several hoist units38880DH hoist units in the productionline of a car manufacturing plant03
Versatile, reliable and rugged – a hoist unit thathas many strengthsDemag DH hoist units are of consistent modular construction and are based on perfectlymatched components of rugged design. Consequently, they provide ideal solutions tomeet individual requirements, even for unusual applications. Demag DH hoist units arein operation in more than 100 countries all over the world, offering outstanding safetyand reliability.Gearbox assembly Space-saving planetary gearbox arrangement,integrated and protected inside the drum High safety and reliability and long service lifethanks to load and output distribution High efficiency, low-noise operation, lubricatedfor life04Electric controlequipment Rugged, low-maintenancecontrol Integrated electric equipmentfor lifting and cross-travelmotions Geared limit switch for reliablecut-off of the hoist unit in theupper and lower hook positions; with switching elementsfor additional operating points Load detector for overloadprotection and overloadcut-off; either as a limit switchor with electronic strain gaugecarrier link Electric equipment enclosureoptionally without any electricequipmentBottom blocks fitted withDIN-rated load hooks Rope sheaves with uniformhardness for a longer service life Single or multi-sheave bottomblocks depending on thereeving arrangement Safe and reliable handlingthanks to improved gripRope guide Made of tough, wear-resistantplastic Can be replaced without theneed for special tools Inclined pull up to 4 withouttouching the rope guide Special designs available
Rope drum brake Optional emergency brake orholding brake, acting directlyon the rope drumDrive with mechanicalmicrospeed unit Separate motors for main andcreep lifting motions Particularly precise positioning High number of starts/stopsand high duty factor also forhigh ambient temperatures Sliding-rotor motors withintegrated conical brake High braking capacity andreliable braking without anycontrol devices when thesystem is switched off or in theevent of a power failureDemag DST controlpendant Pendant switch arrangementsfor controlling Demag DH hoistunits Direct or contactor control High switching capacity Ergonomic handling thanks tothe sloping housing design ofthe control pendantDemag DRC radio controlHand-held transmitters forcontrolling Demag DH hoistunits, also at a relatively largedistance Highly reliable data transmission thanks to frequencyhopping Simple and fastcommissioning by means ofwireless transmitter log-on Impact and temperature-resistant housing design 100 m range Alternative creep-lifting motionby means of pole-changingfunctionInfinitely variable speed controlthanks to optional frequencyinverter05
Stationary or travelling units – to meet your needsDemag DH hoist units can be used in a wide variety of applications. They can be integrated into lift stations, towing winches and many other appliances or made up intotravelling hoist units with a variety of trolleys.Coupled hoist units Rugged solution for spreader operation, transporting long materials and non-craneapplications Exact simultaneous operation also for largedistances between ropes Designed as a modular system for two andfour-point rope suspensions Can be combined with all optionsUniversal joint shaft connection for compensation of any misalignmentEasy assemblyCoaxially coupled hoist unit with angulargearbox, type GWDH hoist units with a rope stabilising arrangementtransporting sheet steel with the help of magnetspreaders at a steel supplier's depot36125Coaxially coupled hoist unit, type GK06Parallel coupled hoist unit, type GP
Travel motorsTravel units Travel wheels of highly wear-resistant spheroidal Smooth starting and braking Low-sway load motiongraphite cast iron Quiet running characteristics and high inherent Fast and precise travel to the required targetvibration-damping effect that is kind to the railposition Low friction and high resistance to wear thanks tothe self-lubricating properties of graphite inclusions Optimum load distribution thanks to special travelwheel shape which transmits wheel contact forcesclose to the centre of the girder Generously dimensioned anti-friction bearings withlong service lifeDirect connection for Demag DH hoistunitsThe two foot-mounting flanges of the squareframe design enable DH hoists to be simplymounted on any of the four sides.Rope lead-off in virtually any direction suits allapplications.EKDH low-headroom monorail hoistThe ideal solution for optimum utilisation ofthe available headroom and particularlyfavourable hook dimensions.Also available as an EKDDH articulatedmonorail hoist for suspension monorailsystems with many branch tracks.EUDH standard-headroom monorail hoistThe cost-effective solution for monorails andsingle-girder cranes. The travel unit is infinitelyadjustable to fit a wide range of flange widths.Also available as an EUDDH articulated monorail hoist for travel on curved tracks; up to 25 talso as double trolley units.EZDH double-rail crabFor higher loads on double-girder cranes;optimum utilisation of the available spacethanks to the low-headroom design andfavourable approach dimensions. Also available as an EZLDH double-rail crab withsymmetrical load distribution on the cranegirders for optimum crane girder dimensions.07
Rope guides – protection against extreme loadsF type rope guideFor outdoor operation in allseasonsS type rope guideFor loads resulting from mediuminclined pull on single-grooverope drumsOnline planning with Demag DesignerDemag Designer makes it easy for you to integrate Demag DH hoistunits into your CAD design process and to select and order parts.Supported by an interactive user interface, you can quickly andeasily select all the information, calculation data, order numbers andprices you need.Configure the hoist unit to meet your individual requirements.Visit: www.demag-designer.com08348223482134820Rope guides protect Demag DH hoist units against extreme loads resulting from inclinedpull, swinging loads and rope vibration. Made of tough and wear-resistant plastic, ourrope guides accommodate inclined rope pull of up to 4 without any contact and can bereplaced without the need for special tools. Rope guides in a variety of special designsare available for special loads.DSZ double rope guideReliable protection for doublegroove hoist units againstextreme loads resultingfrom inclined pull, swingingloads and rope vibration
After-sales service all over the worldWe offer you a wide range of innovative services to cover the entire life cycle of yourinstallations. From a single source. And the same applies to our Demag brand cranes,hoists, load handling attachments and related components and to products supplied byother manufacturers. Our goal is to enable you to concentrate fully on your corebusiness by giving you the certainty that your installations operate reliably, efficientlyand without any faults or malfunctions.extensively trained and receive continuous furthertraining to maintain their qualifications.The result is extremely high-quality service from asingle source.40317-31Our service consultants support you with a widerange of industry-specific expertise to incorporateyour individual requirements into an optimumservice strategy. Demag service engineers are09
DH hoist unit selection criteriaThe size of the hoist is determined by the Load spectrum2/1 Average operating time Load capacity and Reeving1/1EUDH1050H16KV1 -4 /12/1Rope reeving arrangements2 x 2/1x 3/1Theright 22/2-2variantfor /11/11/16/16/12/12/12/12 x /2-26/16/12/28/28/28/14/2-24/2-28/12 x22/1x 2/14/2-24/2-22 x 2-24/2-28/18/14/24/24/4-44/4-42/14/2-24/2-2 2 2x e-groove drumFour-fall reevingLifting speedMotor type: K Squirrel-cage rotor / S Slip-ring rotorHook path 16 m (for 2/1 reeving)Range 1000Size 1050Rope pull on the drum: 50 kNDemag hoist unit type DHU Standard-headroom monorail hoistK Low-headroom monorail hoistZ Double-rail crabE Electric travel trolleyThe load spectrum(in most cases estimated) can be evaluated according to thedefinitions below:1 LightHoist units which are usually subject tovery small loads and in exceptional casesonly to maximum loads.4/24/24/22/2-22/2-23/14/4-44/4-4 2 2x x3/1Small partial loadSmall dead loadOperating time2 MediumHoist units which are usually subject tosmall loads but often to maximum loads.4/4-44/4-44/4-44/24/22 x23/12 2x x4/12 2x x5/14/15/1x 3/14/4-42 x 5/124/4-4x4/23/12 x 4/1 2 2x x3/14/22 2x Load capacity4/2-212.5Track gauge in mmLoad capacity8/11400F 6 – creep lifting 1:6 DH(pole-changing)F 10 – creep lifting 1:10 DH(microspeed unit)Large partial loadMedium partial loadMedium dead loadOperating time3 HeavyHoist units which are usually subject tomedium loads but frequently to maximum loads.Load capacity1. What are the operating conditions?2. What is the specified safe work2/2-2ing load?3. To what heightmust2/11/12/1the load be1/1lifted?4. What is the required lifting4/2speed?6/14/16/14/15.2/1Do the loads need to be lifted and2/12/11/12/11/1loweredwithgreat2/11/12/1 accuracy?1/16. Is horizontal load travel neces4/4-4sary?8/12/2-28/12/2-26/16/17. How is4/14/1the hoist6/16/1to be controlled?F6Cross travelin m/min6/14/12 x 4/1Explanation of size designationHeavy dead loadOperating time2 2x x2/12/12 x24/4-45/1x4/4-45/123/12x x4/14/12 2x x3/122xx4/14/12/122 xx 2/18/28/22 2x x5/15/122xx5/15/13/122 xx 3/14 Very heavyHoist units which are usually subject tomaximum or almost maximum loads.Very heavy dead loadLoad capacity2 x24/2-24/1x4/2-24/1Operating time2 x22/1x 2/12 2x x4/14/18/28/22 x23/1x 3/12 2x x5/15/14/122 xx 4/1102 x 4/12 x 5/18/28/28/28/2 2 x 5/12 x 5/1
ExampleLoad capacityLoad spectrumLifting speedCreep lifting speedReevingAverage hook pathNumber of cycles/hourWorking time/dayThe group is determined from the operating time and load spectrum.10,000 kg“Light” from table8 m/min1.3 m/min2/14m208 hoursLoad spectrum1Average operating time per working day (hours)Lightup to 2up to 11–2up to0.5–10.5up to 0.25 – 0.50.252Medium3Heavy4Very heavy2–44–88 – 16morethan 168 – 162–44–81–22–44–80.5 – 11–22–4Group of mechanisms to FEM1Bm1 Am2m3m4mGroup of mechanisms to ISOM3M4M5M6M7616Reeving arrangement2/21/1Example of a calculation to FEM/ISOThe average operating time per working day is estimatedor calculated as follows:2 avg. hook path no. of cycles/hourOperating working time/day time/day60 lifting speed2 4 20 8 2.66 hours60 64/22/18/24/16/18/11,600 3,2006,300––DH––––2,000 4,0008,00012,50016,000DH–––620–2,5005,000 10,000 16,00020,000DH––625–10253,200–Load capacity [kg]For the “light” load spectrum and an average daily operating time of 2.66 hours, thetable shows group 1Am. For a load capacityof 10,000 kg and 2/1 rope reeving, thediagram indicates hoist size DH 1050.SizeRange6,300 12,500 20,00025,000DH–632–10324,000 8,000 16,000 25,00032,000DH640–1040––5,000 10,000 20,000 32,00040,000DH–1050––2050–6,300 12,500 25,000 40,00050,000DH10638,000 16,000 32,000 50,00063,000DH–10,00
Demag DH hoist units are of consistent modular construction and are based on perfectly matched components of rugged design. Consequently, they provide ideal solutions to meet individual requirements, even for unusual applications. Demag DH hoist units are in operation in more than 100 countries all over the world, offering outstanding safety and reliability. Versatile, reliable and rugged .
