Cable CarriersInformation about further items of our productrange is a - PDF document

1 Cable CarriersInformation about further
Cable CarriersInformation about further items of our productrange is available on request: Copper head rails Current collectors Insulators Plastic- and neoprene-cables Junction boxes Cable reels Radio remote control units Anti-collision devices Eisenstraße 1D-57489 Drolshagen-SchedaGermanyTel.: +49 2763 / 211 482FAX: +49 2763 / 211 484info@bewa-vertrieb.de 54 700 Seriesmedium dutycable carriers(all steel)Cable carriers for RSJ’s sectionsWill suit RSJ’s with 2’’ to 4’’ wide flanges.All joints should be 95° angle for other angles please specify. The following pages show cable carriers which are designed to travel along most standard RSJ’s with a 95° angle and areavailable only in single tier version but will suit round and flat form cableThe round cable carrier will accommodate round cables from 16 mm to 26 mm diameter and flat form cables up to 21.5 mmthick.The general construction possesses most of the

2 characteristics of the heavy duty carrie
characteristics of the heavy duty carriers are i.e. heavy duty roller, all steelconstruction and robust.All 700 series of bewa cable carriers are available with 3 types of roller and roller support assemblies1) Taper flanged roller for RSJ’S up to 4’’ wide flanges – type spk.2) Cylindrical 60 mm dia rollers for RSJ’S up to 4’’ wide flanges – type cyl.3) Cylindrical 60 mm dia rollers with side rollers for European profile I beams – type eur. Cylindrical roller with side roller.Please note!a) Please state desired roller assembly when orderingb) Cylindrical rollers are available with polyurethane tyres for near silent running 55 700 Seriesround cable carriersTechnical dataTrack:RSJ’s up to 4’’ wide flanges 95° angleHigh yield stress steel to BS 968 Suspension support distance:2 – 2.5 m Max. load capacity:70 kg Max cable capacity:16 round cable from 16 to 26 mm Max cable diameter:from 16 to 26 mm Rollers:Hardened steel wi

3 th dust and water proof bearings.Bearing
th dust and water proof bearings.Bearings pre-packed with grease suitable for temperature rangeof –30°C to + 125°C Cable fastening:By individual ‘G’ clips. Material specifications:All steel construction either galvanised or plastic coated. All hardware zinc proofed.Provision for attachment of tension wires is provided.Buffers are neoprene. Applications:Power carrying systems, medium duty standards.Suitable for interior or exterior applications. Each installation requires:1) Requisite number of cable carriers2) One end carrier (fixed) for track3) One end carrier (leading) for outrigger on mobile trolley4) One buffer extension5) Corresponding number of cable cleats 56 700 SeriesRound cable carriersKT 703 Weight each Part No.Cable arrangement16 to 26 mm KT carrierend carrier KT 703/21

957.17.6 KT 703/23



1607.78.2 KT 703/25





2258.38.8 KT 703/27







2908.99.4 KT 703/29









3609.510.0 KT 703/201











425

4 10.110.6 KT 703/203













49010.7
10.110.6 KT 703/203













49010.711.2 KT 703/205















55511.311.8 Buffer extensionThe buffer extension is bolted to the first roller carrier and aligns with the buffer on the leading (outrigger) end carrier.Part no.For cable carrierABkg/ea. PT 712KT 703115200.4 57 Each complete installation requires one fixed end carrier and one leading end carrier. Type EL is fixed and type EA is leading700 SeriesEnd carriersfor KT 703 RSJ flange width607585100 A40505050 Cable Arrangement and overall width is as per KT 703 carriers Cable cleats for round section cables.There is a tendency for round section cables to twist, this can be avoided by clamping them with cable cleats.The cleats are of impregnated hardwood strengthened with aluminium frames. On receipt of instructions we can provideaccurately bored holes at the appropriate spacings to suit the cable arrangements.Alternatively cable cleats can be supplied unbor

5 ed.Cable cleatsPart No.ABCkg/ea. S 718/
ed.Cable cleatsPart No.ABCkg/ea. S 718/ 219670380.28 S 718/ 2316870380.46 S 718/ 2523670380.60 S 718/ 2730470380.80 S 718/ 2937270381.00 S 718/20145070381.20 S 718/20351870381.35 S 718/20558670381.55 58 700 SeriesTension wiresFor cable carrier KT 703Manufactured from galvanised steel wire ropes, fitted with “Talurit” rope clamps.We recommend that in conditions where, either the crane trolley velocity exceeds 80 m/min. or the travel distance exceeds 30m, tension wires are employed.The tension wires are available in the following diameters, 8, 10 and12 mm and are delivered complete with rope clamps, thimbles andshackles. The required length and diameter of rope should be slatedat the time of ordering.The cable carriers would be delivered ready for fitting of the tensionwires, the wire length being such that the inner edge of the ropethimble aligns with the end of the carrier. Calculation of tension wire lengthA = Tension

6 wire length between two cable carriersB
wire length between two cable carriersB = Mobile trolley travel distanceC = Mobile trolley lengthD = Closed up (stack section) length (see chart on page 94/95)n = number of roller cable carriersB + C - DA =n + 1 How to order tension wires – Supplied complete with shacklesRope diameter 8 mm and 3550 mm long is 8/3550 59 60 700 seriesFlat formcable carriers(all steel) Technical dataTrack:RSJ’s up to 4’’ wide flanges 95° angleHigh yield stress steel to BS. 968 Suspension support distance :2 – 2.5 m Max. load capacity of carriers:max. 70 kg Max. cable thickness:KT 706 – Flat form cable up to 17.5 mm thickKT 707 – Flat form cable up to 21.5 mm thick Max clamping spaceKT 706 - 35 mm x 150 mm (height x width)KT 707 – 35 mm x 150 mm (height x width) Rollers:Hardened steel with dust an waterproof sealed bearings.Diameter of roller 95° bearings,pre-packed with grease suitable for temperature range –30°C to + 125°C Cable fasteni

7 ng:By Neoprene clamping pieces. Material
ng:By Neoprene clamping pieces. Material specification:All steel constructions either galvanised or plastic coated. All hardware zinc proofed.Provision for attachment of tension wires is provided.Buffers are of neoprene. Applications:Power carrying systems, medium duty standards.Suitable for interior and exterior applications.. Each installation requires:1) Requisite number of carriers2) One end carrier for the track (fixed)3) One end carrier (leading) for the outrigger on mobile trolley4) One buffer extension5) Corresponding number of cable cleats 61 700 SeriesFlat form cablecarrierstype KT 706 – KT 707Weight ea. Part No.End carrierNo.max. cablethicknessmmmax. clampingspace mmheight x widthABDroller carrierend carrier KT 706EL 706EA 70616.935 x 1502601301609.39.8 KT 707EL 707EA 70721.535 x 1503001552159.610.1 The buffer extension is bolted to the first roller carrier and aligns with the buffer in the leading (outrigger

8 ) end carrier.Buffer extensionPart No.Fo
) end carrier.Buffer extensionPart No.For cablecarrierABkg/ea. PT 712KT 706 - 707115200.4 62 700 SeriesEnd carriers(fixed and leading)Each flexible cable arrangement requires an end clamp for he first and last cable loop. The end clamp type EL is for the runnerrail and the type EA for crane trolley bracket.The correct end clamp can be obtained from the foregoing table. Type EA – Leading end carrierPart No.B EL 706130 EL 707150 EL 708200 RSJ Flange width607585100 A35505050 63 Tension wires for relieving stress on cables. For use with cable carriers KT 706 – 707.Manufactured from galvanised steel wire ropes, fitted with “Talurit” rope clamps.We recommend that in condition where, wither the crane trolley velocity exceeds 80 m / min. or the travel distance exceeds30 m, tension wires are employed.700 SeriesKT 706 – KT 707The tension wires are available in the following diameters, 8, 10 and12 mm and are delivered complete w

9 ith rope clamps, thimbles andshackles. T
ith rope clamps, thimbles andshackles. The required length and diameter of rope should be slated atthe time of ordering.The cable carriers would be delivered ready for fitting of the tensionwires, the wire length being such that the inner edge of the ropethimble aligns with the end of the carrier. Calculation of tension wire lengthA = Tension wire length between two cable carriersB = Mobile trolley travel distanceC = Mobile trolley lengthD = Stack section length (see chart on page 94/95)n = Number of roller cable carriersB + C - DA =n + 1 How to order tension wires – Supplied complete with shacklesRope diameter 8 mm and 3550 mm long is 8/3550 64 65 66 67 68 69 70 71 The size and type of cable carrier to be used is determined by the number and diameter of the cables and, in the case of flatcables, the thickness.Round cables having a diameter of more than 46 mm are not suitable for the application of BEWA because of their

10 poorbending properties. If, however, gr
poorbending properties. If, however, greater diameter cables are required, it is recommended that smaller diameter cables mountedin parallel be used, or suitable flat cables (see chart giving size of cables on front inside cover).With the installation of larger carriers (having one or more tiers) the largest diameter cables must be on the top tier and thesmaller diameter cables on the lower tier.General Noteson selection ofcable carriersCable carrier are made for the support and conveyance of power cables on cranes and other mobile machines.Cable carriers are installed in parallel with the traversing track. Each carrier supports one or more cables in a loop. Thesystem is such that the leading cable carrier is connected to the moving trolley by an outrigger. when motivated, and with theassistance of the weight of the cables, this extends the rest of the carrier systems.The design of such systems requires the following in

11 formation.1) The type of cable, round or
formation.1) The type of cable, round or flat, quantity cables and diameter. In the case of flat cables, the width andthickness.2) Maximum height available from the R.S.J. for the cable loop.3) Trolley travel length.4) Length of trolley (to determine stack section length of the carriers).5) Speed of trolley.Selection ofsuitable cableThe depth of the installation (see page 73) determines the length of the cable loop.In closed circuit buildings it is essential that the distance between the bottom of the roof trusses and the proposed cable carriertrack is at least 500 mm.When the distance between the trolley track and the bottom of the roof trusses has been determined, it is necessary then tosubtract the following:1) Recommended minimum distance of 500 mm.2) Distance between the top of the cable track and the top of the cable support.3) Constant 100 mm between the bottom of the trolley track and the bottom of the cable loop.

12 The result of this gives the maximum hei
The result of this gives the maximum height available for the cable loop (see page 73).Cable loops –depth of installationAfter determining the loop height and the trolley travel, the number of carriers required can be calculated by using the chart onpage 94 /95.Number of carriersGiven the trolley length, and having determined the number of carriers required, the overall length of these carriers, plus thelength of two end clamps, should not exceed the trolley length (see table on page 94 / 95).Should it be that the overall length of carriers, plus the two end clamps is longer than the trolley length, then the followingsolutions are suggested:1) lengthening of the carrier track (if possible)2) extending the length of the loop3) installation of smaller carrier (by using smaller diameter cables mounted in parallel or by using flat cable)4) by installing a second carrier track (details on request).If, however, the trolley len

13 gth is longer than the length of the car
gth is longer than the length of the carriers, the distance between the end clamp fitted to the outriggerand the end clamp fitted to the cable carrier must not exceed the overall stack section length.Length of trackWith an installation having a trolley speed in excess of 80 metres per minute, it is necessary for the carriers to be connectedwith tension wires (see page 79).For example, when the carriers are motivated, the rising loop of the cables transmits kinetic power from the dragging to thedragged carrier and the tension rope is fitted to lock this carrier before it reaches maximum acceleration. The length of thetension ropes should be 12% to 15% shorter than the extended length of the cables between each carrier.Systems having greater loops also require tension wires in order to prevent damage to cables, although the acceleration mightbe less than 80 metres per minute.In conclusion, it is of the utmost importance tha

14 t the cable loops be kept as small as po
t the cable loops be kept as small as possible, and that the provision of theextra cable loops made by having shorter tension wires, be maintained.(Please refer to us for any further information you may require.)Trolley speedsWe recommend the use of heavy round cable, or, because of its flexibility, flat cable and, in order to avoid overstressing, areserve loop system is necessary, for which we recommend an additional 10% in the length of the cable between the two endclamps.In installing the cable, care must be taken in not screwing the clamping screws against the cable too tightly, otherwise this willcause loss of flexibility or even deformation of the conductor.Cable laying 72 Instructions for fittingEach installation requires:1) Requisite number of carriers2) Two end clamps (one for the track and one for the outrigger)3) One buffer extension4) The requisite number of cable cleatsSuspensionsThe runner rail is best sus

15 pended from cantilever brackets, these b
pended from cantilever brackets, these being spaced at2.5 to 3 metres (see Fig. 1) the support brackets can usually be mounted over thebridge-girder platform.If, at the time of ordering, the RSJ size is not stated, cable carriers would besupplied suitable for an RSJ of 6’’ x 3 1/2 ‘’ for carriers 718, 728 and 748. 7’’ x 4’’or 8’’ x 4’’ for carriers 748. DriveTo drive the cable carriers, a steel channel bracket (outrigger) must be built fromthe crane trolley to carry the moving end clamp. the bracket must be arranged toallow free travel under the runner rail (see fig. 2).An end clamp is installed at the end of the runner rail and at the crane trolleybracket, the ends of the cable loop, terminating at each end clamp after passingover the intermediate cable carriers, these allow the travel of the flexible cables.Each looped cable arrangement is delivered with the runner rail and crane trolleyend clamps, these being supplied

16 with the angle iron pieces ready for bol
with the angle iron pieces ready for bolting inposition (see Figures 2 & 3).The extensions to the above are end clamps KT 865 – KT 885, which are bolteddirectly to the runner rail, the angle iron not being required.We draw attention to the fact that the dimension between the underside of therunner rail and the under face of the crane trolley channel iron bracket, should beaccurately maintained at 30 mm (see Fig. 3).The holes required in the angle iron pieces, should be drilled at the time of offeringup the end clamps to the runner rail or crane trolley bracket.It is necessary for the first cable carrier to be fitted with a buffer intension, to alignwith the end clamps. Cable installationWe recommend for looped flexible cables, heavy duty rubber covered cables for Butyl.To avoid overstressing cables by the action of the crane trolley, we recommend that a 10% reserve should be included intothe length of the cable between en

17 d clamps.As there is a tendency in any l
d clamps.As there is a tendency in any loop system for the cables to twist, the use of the cable clamps shown on page 77 will obviatethis characteristic. For cable sags up to 2 m every loop should have 2 clamps. We further recommend that where a larger sagis encountered 4 clamps per loop are required.Tension wireWe recommend that where velocities exceed 80 m/min or travel length exceeds 30 m, that the cable carriers be fitted with towropes, thereby eliminating any possible stressing the cables themselves (see page 97).cable carriers of types KT 718 – KT 865 and KT 865 – KT 989 are fitted with tension rope fastenings.Replacement ofroller assemblyEach roller assembly can be removed singly from the carrier side if required, by removal of the roller assembly axle retainingnut.MaintenanceSpecial maintenance schedules are not necessary and the normal inspection routine given to this type of equipment issufficient.The ball races

18 of the runner wheels are packed with hi
of the runner wheels are packed with high quality grease and need no further greasing.We recommend that periodically the RSJ runway surface should be cleaned. 73 Typical looped cable carrierIndoor arrangement on overhead crane Example of a typical looped cable arrangementGiven the following:travel of trolley. 17 m, overall trolley dimension: 4.5 m, available headroom: 2.1m.RSJ Section 7’’ x 4’’ x 95°4 cables 3 core x 50 mm² = 45 mm Ø8 cables 3 core x 25 mm² = 34 mm Ø3 cables 4 core x 4 mm² = 21 mm Ø1 cable 2 core x 6 mm² = 21 mm Ø 16 cables totalCable carrier selection:from the largest cables diameter (i.e. 45 mm) type KT 748 would be chosen.As 16 cables cannot be accommodated in a single tier cable carrier, a two tier carrier would be selected and arranged asfollows:Cable carrier No.KT 748/8734 34 45 45 45 45 34 34Lower tier No.U 728/4521 21 34 34 34 34 21 21Ordered as:Cable carrier No.End clamps N

19 o.KT 748/87 U 728/45ET 748/87 U 728/45
o.KT 748/87 U 728/45ET 748/87 U 728/45Cable loop form height:Available headroom = 2100 mm, Height available to accommodate loop 2100 – (328 + 220 + 100) = 1.452 mCarriers requiredFrom the graph provided on page 94 / 95 the number of cable carriers required ca be determined.from the base line read off the travel of trolley in metres (17,000 mm) and intersect vertically to the available loop height (1.5 m)reading the number of carriers required on the vertical axis (b) i.e. take the nearest number above.Distance between end clamp centres when stacked:From the lower table on page 94 / 95 select the appropriate carrier size (No. KT 748 – 530 mm) and read under the columnabove (i.e. No. of carriers 6) the overall length between end clamp centres when stacked as 3,810 mmTotal cable length required:The total length of cable required between end clamps is as follows:Travel of trolleyOverall length of carriers ambushed17,000 mm+

20 3,810 mmTotal between end clamps10% t
3,810 mmTotal between end clamps10% to maintain reserve loop= 20,810 mm+ 2,081 mm Installation length= 22,891 mm 22.9 m The above of course makes no allowance for the cable length necessary to complete the conductor beyond the end clamps.Note: The foregoing example requires:6 cable carriers2 end clamps1 buffer extension4 cable cleats4 cable cleatsNo. KT 748/87No. ET 48/87No. PT 722No. S 748/87No. S 728/45U 728/45U 728/45 74 718 – 748 SeriesHeavy dutyall steelThis series of bewa cable carriers are available with 7 different types of roller.1) Taper flanged steel rollers2) Cylindrical rollers 95 mm 3) Cylindrical rollers 60 mm 4) Cylindrical rollers with side rollers for European I beams.5) with additional bottom kick-up rollers for high speeds.6) Cylindrical rollers with polyurethane tyres for near silent operation7) Spring loaded kick up roller in steel or steel with polyurethane tyresNote: please state desired ro

21 ller when ordering.Rollercyl. *Also avai
ller when ordering.Rollercyl. *Also available with polyurethane tyreCylindrical roller andside plate to suit beamsup to 100 mm wide flangeand having 95° angle.Size 60 mm and 95 mm dia.Rollerspk. Taper flange rollerand side plate suitbeams up to 100 mm.Size 110 mm dia.Rollereur. *Also available with polyurethane tyreCylindrical rollerwith side roller to suitEuropean I beams.Size 95 mm dia. 75 718 – 748 SeriesHeavy duty forround cablesthis heavy duty, well proven cable carrier series, is ideally suited to many arduous conditions such as, steel mills, dock andcontainer cranes, foundries, offshore oil rigs and aluminium smelting plants.Each carrier can be manufactured to suit almost any cable arrangement for cables from 14 to 54 mm dia. and can be suppliedas singe, double and treble tier units. The cable supports are manufactured in steel to suit the maximum diameter cable to beslung over it and each cable is clamped indivi

22 dually with special ‘G’ clamps. The bene
dually with special ‘G’ clamps. The benefits of the cable clamping arrangement isthat it allows the cable to be kept apart thereby reducing wear and allows heat to be dissipated. Each cable can be loaded ontothe carrier from both sides without any time consuming need to thread through carrier frame work.All parts are supplied plastic coated but can be supplied hot dipped galvanised upon request.The carriers are normally supplied with rollers and roller support plates to suit 95° angle (RSJ beams) for other angles pleasespecify.The maximum working speed for the standard carrier is 160 m/min. For speed above this we are able to offer a wide range ofsolutions. See section covering special applications.Technical dataTrack:RSJ’s up to 4’’ wideflange 95° EUR I beamsIPE 140 – 200 Suspension support distance2.0 – 3 m Max. load capacity:80 – 2,200 kg Max. cable compliment:Type KT 718 16 (32)round cables14 - 26mm ØType KT 728 12 (2

23 4)round cables26 - 36mm ØType KT 748 12
4)round cables26 - 36mm ØType KT 748 12 (24) (36)round cable36 - 54mm ØThe figures in brackets relate to two and three tier cable arrangements. Max. clamping space:KT 718 26mm ØKT 728 36mm ØKT 748 46mm Ø Rollers:Hardened steel rollers with dust and waterproof sealed bearings.Diameter of roller 95 mm bearings, pre-packed with greasefor temperature range -30°C to +135°C. Cable clamps:All ‘G’ clamps individually adjustable. Material specification:All steel construction either plastic coated or galvanised.Heavy duty neoprene buffers, all hardware rust proofed.Tension wire hole drilled as standard. Applications:Heavy duty power conduction systems for arduous conditions in steelworks,rolling mills, smelters, foundries, container terminals and oil rigs. For other rollers see chart opposite. 76 718 – 748 SeriesCable carriersfor 16 – 46 mm dia.cablesThe cable carriers illustrated on the following pages meet all requirements of a

24 modern, quickly installable and exchang
modern, quickly installable and exchangeablesystem due to various modifications and improvements. Each carrier can be composed so to have a top carrier with an under-carrier of each type. 718, 728 and 748.All types are designed to meet heavy duty requirements of a festooning system as e.g. in steel mills, foundries, containerterminals etc. admissible speed is 160 m/min. The max. weight load is 2,200 kg. Multi-tier cable arrangements: when a carrier is provided in a multi-tier arrangement the top carrier’s overall length increasesas shown:Type KT 718 in 2 tier version - 375 mm, axle centre 210 mmType KT 718 in 3 tier version - 530 mm, axle centre 350 mmType KT 728 in 2 tier version - 495 mm, axle centre 340 mmType KT 728 in 3 tier version - 630 mm, axle centre 430 mmType KT 748 in 2 tier version - 630 mm, axle centre 430 mmType KT 748 in 3 tier version - 730 mm, axle centre 430 mmEnd carriersType KT 718 – 748Fixed and le

25 adingEach flexible cable arrangement req
adingEach flexible cable arrangement requires an end clamp for the first and last cable loop, one of these being fixed to the runnerrail and the other to the crane trolley bracket. The end clamps are delivered complete with the angle iron.The cable carriers are suitable for more than one RSJ profile and therefore we ask customers to bore the required holes in theangle iron. Part No.ForcarrierstypePart No.Forcarrierstype EL 718EL 728EL 748KT 718KT 728KT 748325370450EA 718EA 728EA 748KT 718KT 728KT 748 77 718-748 SeriesCable arrangementAnd cable cleats 78 718 – 748 Seriesbuffer extensionsBuffer extensions is bolted to the first roller carrier and is aligned with the buffer on the leading carrier which is fixed tooutrigger arm.The buffer slopes down to give a 50 mm clearance between the under side of the track and the top of the leading carrier.Part No.For cablecarrierABWeightkg/ea. PT 712PT 722PT 732KT 718KT 728KT 74811

26 51752552020350.40.50.6 Cable cleatsFor c
51752552020350.40.50.6 Cable cleatsFor cable carriers type 718 – 748There is a tendency for round section cables to tangle, this can be eliminated by clamping with cable cleats. the cleats consistof impregnated hardwood strengthened with aluminium frames.On receipt of instructions, we can provide accurately bored diameters and the appropriate divisions to suit the cables. Thecleats can be delivered ready for boring by the customer.With two tier trolley arrangements the cleats should be installed in such a way that they cannot touch each other. For cable arrangement see chart on page 77. 79 Tension wires for relieving stress on cables. For use with cable carriers KT 718 – KT 748.Manufactured from galvanised steel wire ropes, fitted with “Talurit” rope clamps.we recommend that in conditions where, either the crane trolley velocity exceeds 80 m/min or the travel distance exceeds 30m, tension wires are employed.718 – 748 Se

27 riesTension wiresThe tension wires are a
riesTension wiresThe tension wires are available in the following diameters, 8, 10 and12 mm and are delivered complete with rope clamps, thimbles andshackles. The required length and diameter of rope should be statedat the time of ordering,the cable carriers would be delivered ready for fitting of the tensionwires, the wire length being such that the inner edge of the ropethimble aligns with the end of the carrier. Calculation of tension wire length.A = tension wire length between cable carriersB = Mobile trolley travel lengthC = Mobile trolley lengthD = Stack section length (see chart on page 94/95)n = Number on roller carriersB + C - DA =n + 1 Tension wire diameter in mm determined by crane trolley, velocity and travelTravel in metresVelocity in m/min0 - 3030 – 7070 - 100over 100 0 – 80-8810 80 – 150881010 over 150-121212 Example when ordering: for a tension wire of 8 mm diameter and 3,550 mm length: Tension wire 8/3550