Reeving - Canco Cranes

1 ReevingCommon Applications ot HOIST ReevingsReeving refers to the configuration of the wire rope , blocksand drum of the hoist. Reeving elfects headroom, littingspeed and capacity by increasing the hoist's mechanicaladvantage. Beeving also determines if the hoist has lateralhook movement or true vertical three terms used in Reeving arc', single, double andparl. Sing le or double refers to the number of ropes cominglrom the drum. Parl deals with the mechanical advantaoegained by multiple Reeving . For example. with two ptrtsingle Reeving (2PS) the load is distributed over the twoparts, and the mechanical advantage doubles the capacityof one part Reeving but reduces by one half the lifting orlowering speed of the applications require that the load not move right orleft of the hoist centerline while being lifted.

2 This is calledtrue vertical lift and requires that the hoist be double reev-ed. Double Reeving also requires less headroom thansingle MASTEA CATALOG SECTION NO FOR OETAILED INFOFMATIONR eeving changes hoist arrangement to the beam or track,minimum headroom distance, and lateral hook : Some applications require that the distancefrom the bottom of beam to saddle of the hook be held to aminimum. This dimension will determine whether a stan-dard or close headroom is HOOK TRAVEL:Laterat nHook Travel \9 TrueVertical LiftSome applications require that the load, when being lifted,not move right or lett from hoist centerline.

3 Lf this require-ment is known, a true vertical lift hoist must be are described as two part double (2PD) or four parldouble (4PD) and are available in both parallel or crossmounted Part SingleProducl Series 32 through 35(a)4 Part Double(a) 4 PD Reeving shown doesnot apply to the WRIGHTAMERICAN H adroornParallelMountgdClos6 H adroomParallel Mount dCIos HoadroomCross MountedR ving:2 PSor4PS2PD2 PDot 4 POMinimumHeaclroom:FairGoodBestLat ralHook Travel:Hook travelsNoneNoneCost:High20 IURIEHT'Common Types ol WINCH ReevingsWork-rated winches can be reeved in various ways to gaindesigned mechanical advantages.

4 The illustrations on th ispage demonslrate some of those Reeving eflects capacity, lifting distance, liftingspeed and cable size. Winches are available in sinole anddouble line lead off angle is a critical specification in winch ap-plications. Standard lead off angles are shown below. Forthe optional lead off angles indicated by the shaded areas,the exact degree of the angle or range of angles is requiredwhen Work-rated winches are suoolied without wirerope. When wire rope is supplied, it is 6 x 37 preformed, ex-cept on applications that require non rotating, 18 x 7 con-struction swaged on drum end fittings of the wire rope are pro-vided.

5 A vareity of dead-end fittings. such as swivelhooks and load blocks, and idler sheaves, are available tomeet your specific DRUM Reeving ARRANGEMENTSSINGLE LIN E Reeving ARRANGEMENTSS tandard ArrangementAA AftangementDOUBLE LINE Reeving ARRANGEN,4 ENTSDD Arrangemeni EE ArrangementArrangements AA, CC, DD & EE are MASTEA CATALOG SECTION NO 33-103 FOR OETAILEO INFORMATIONLINE LEADOFF ANGLESWork-rated winches are designed with a standard range orranges of leadoff angles. See the illustration for locationof the standard MASTER CATALOG SECTION FOA OETA]LEO INFORMATION1PS1 Part Single Reeving1PD1 Part DoubleDouble Hook (a)2-2PS2 - 2 Pa Single (a)1PD'| Part DoubleSingle Hook2PD2 Part DoubleBB ArrangementCC ArrangemenlPRODUCT SEBIES WINCHES PRODUCT SERIES 36 WINCHEST rolley SuspensionsWright wire rope hoists are available lugmounled or in a variety of trolley , Wright Ametican and Work-ratedhoists are available in plain trolley, hand chaindriven geared trolley and motorized trolleyunderhung suspensions.

6 Work-rated hoists arealso available with top running are available to fit standard 'S' beams,wide flanged 'W' beams and patented track.(see Figure 1on facing page) Articulatedtrolleys for curved track are also flange width and thickness and theminimum radius curve must always be suppliedwhen ordering hoist su spens inGeared (hand chain)Motor drivenStraight trackCurved irack@22 IIIRIEHT'\,tvFIGURE 1 Hoist Duty Service ClassificationTo help in hoist selection the Hoist Manufacturers Institute has grouped these typical areasof application into five classifications shown in the chart below.

7 These are only guidelinesand do not consider overall equipment life or routine ClassTypical Areas ol ApplicalionH1 Powerhouse and utilities, infrequent handling. Hoists are primarily toinstall and service heavy equipment, where loads frequently approachrated load, and where the hoist is idle for 1 to 6 month periods betweenperiods of machine shop, fabricating service, and maintenance. Loads andutilization randomly distributed. Rated loads infrequently running time not over of the work machine shop, fabricating, assembly, storage, and warehous-ing. Loads and utilization randomly distributed.

8 Total running time notover 25o/o of the work volume handling of heavy loads, frequently near rated load insteel warehousing, machine and fabricating shops, mills, and foun-dries, with total running time not over 50% of the work or automatic cycling operations of lighter loads with ratedloads infrequently handled such as in heat treating and plating opera-tions, with total running time frequently 50% of the work handling of material in combination with buckets, magnets, orother heavy attachments. Equipment often cab operated. Duty cyclesapproaching continuous operation are frequently necessary.

9 Usermust specify exact details of operation, including weight ,)How to order check listIIIRIEHT'How will the hoist be used? (CAPACITY)! Avg. load will b 65% of hoist capacity or less. Occasional lifts made at full hoist capacity.! Avg. load will be greater than 657o of hoist capacity. More frequent lifts at or near far must loads normally be lifted or lowered? (LIFT)n ! 4-7ft. n many times will the hoist be used in a typicat hour? (LIFTS/HR.)(lf the hoist is used extensively lor two hours of a shitt, report the times for one ol those hours;do not average lrose /ifts over the entire shift)n 8-11 timesn 15 - 19 timesn 16-19ft.

10 ! 20-30 tt.! 20 - 24 timesn 25 - 29 timesn 1-4times! 5-9timesWhat kind of suspension is! lug mountedn base mounteda) Specify the type of beamD S Shapeb) Specify beam flange ) Must the trolley operate on curved track?lf so, specify curve radiic6 What is the minimum beam to high hook distance? (HEADROOM)What kind ot hoist motor is required? (MOTOR TYPE)n single speed n two speed. othera) What catalog lifting speed is required? (LIFTtNG SPEED)b) Specify hoist power source (MOTOR VOLTAGE/PHASE)required? (SUSPENSION) 6ee ittustrctian on pages 7 and 22)n deck mounted n geared trolleytr plain trolley n motorized trolleyor track on which the trolley will operate.