END-CARRIAGES FOR BRIDGE CRANES
36Pages

END-CARRIAGES FOR BRIDGE CRANES DGT WHEEL GROUPS SERIES DGP OFFSET GEARED-MOTORS SERIES

DONATI SOLLEVAMENTI S.r.l. safe and modern drive units for handling on rails The bridge crane end-carriages, equipped with “DGT” series wheel groups, coupled with “DGP” series offset geared motors, represent the most convenient offer for worldwide market requirements for handling masses up to 62,000 kg. The bridge crane end-carriages, a completion of the range of DRH series electric wire rope hoists and DMK electric chain hoists, appreciated worldwide by sector professionals, are part of the range of products manufactured by DONATI SOLLEVAMENTI S.r.l. a leading Italian company, and one of...

APPLICABLE LEGISLATION The bridge crane end-carriages are designed and produced by DONATI SOLLEVAMENTI S.r.l. in compliance with the "Essential Safety Requirements" stated in Attachment I of the Machinery Directive 2006/42/CE and are introduced onto the market accompanied by the Declaration of incorporation found in Attachment II B of the Directive APPLICABLE NORMS AND REGULATIONS The following norms and technical principles have also been taken into consideration in the design and manufacturing of the end-carriages for bridge cranes: ■ EN ISO 12100/2010 "Fundamental concepts on general...

END-CARRIAGES FOR BRIDGE CRANES DONATI end-carriages are designed for handling operations on bridge crane rails: t single running speed from 3.2 to 25 m/min; a t two running speeds, from 12.5/3.2 to 80/20 m/min; a operating on: ingle girder, with a capacity of up to 20,000 kg and s gauge of up to 25 m; ouble girder, with a capacity of up to 40,000 kg and d gauge of up to 27 m. Designed and built on the principle of modular components assembled together in relation to their specific use, they are equipped with drive units comprising “DGT” series wheel groups, which are combined with “DGP”...

COMPONENTS ON END-CARRIAGES FOR BRIDGE CRANES The main components on end-carriages for bridge cranes are the: END-CARRIAGE FRAMEWORK: T he load-bearing structure is made from a rectangular tubular section. T he bridge crane girders are fixed to the end-carriage structure using a system of high-resistance bolts and a pin centring system. END-CARRIAGE FOR SINGLE GIRDER BRIDGE CRANE Joining cross plates between the beam and bridge crane girder Travelling drive unit comprising “DGT” wheel group and “DGP” offset geared-motor group Idle drive unit comprising “DGT” wheel group Body framework in...

“DGP” SERIES OFFSET GEARED-MOTORS Reducers are designed as an “offset geared-motor” type with a concave shaft, featuring parallel axes with two or three stages of reduction, and permanent oil-bath lubrication.  Engineered with cylindrical high resistance steel gears, featuring spiral teething, heat-treated, entirely supported on ball bearings.  Sized to resist a lifetime of stress and wear, in accordance to the pertinent ISO service group.  The connection between the geared-motor and drive wheel is guaranteed by a slotted shaft connecting the holes on both parts, while the geared-motor...

For complete technical specifications on the end-carriages for bridge cranes, in relation to their intended operation, check and match the parameters limiting their operation. The tables below provide a suitable means of verifying operating limits and specifications for end-carriages with wheel groups in combination with offset geared-motors and self-braking motors, in relation to the following user specifications for the bridge crane the end-carriages are installed on. Operating parameters required for selecting end-carriages: ■ type of bridge crane (single girder or double girder); ■ load...

The following diagrams (pages 8, 9 and 10) illustrate average admissible reactions R ave. (expressed in kg) on drive unit wheels, in relation to the running speed and to the operating width "b", as specified in the table on page 7. The correct choice of wheel is based on the average effective reaction R ave. effettiva, exerted on the wheel. This value is derived from the following equation: R ave = 2 • R max. + R min. where R max. is the most unfavourable load condition, equal to: M1 M2+P a R max. = ~4 + (-2“ ) * ( 1 - S while the minimum reaction R min. is: M1 M2 a where : M1 = crane mass,...

Yeluclli Jl -Bccudni □ i»1c TL'imru Fdicid nil Ir Ji s^nriiirmiilD ilrlr.i luolj j n r Example of verification of suitability for a 0 200 wheel (see example 2 on page 22) Data calculated: ■ Rail operating width ■ Travelling speed ■ Service group ■ Average effective reaction ■ Maximum effective reaction The average admissible reaction is s 5.500 kg > than the average effective reaction of 4.885 kg the wheel is subjected to; The maximum admissible reaction is = 7.340 kg > than the maximum effective reaction of 6.581 kg

0R IIBJlr item) 0P IDO |mm'| 0 Ft 314 I unfii ] VrladlAi dl scarrlmenta 1 mftrm ■ n a » >u m o w OMiummux. 30580 Veltidtb dl scarriinenffio (rTu'nVn i F nda ulile di srajiiifwnlii delta luufj ( mm 'i Example of verification of suitability for a 0 315 wheel (see example 1 on page 22) b = 58 mm 40/10 m/min; ISO M5 (FEM 2m) R ave. = 9.202 kg R max. eff. = 1 1.963 kg Data calculated: ■ Rail operating width ■ Travelling speed ■ Service group ■ Average effective reaction ■ Maximum effective reaction

Referred partial codes are applied to couples of end-carriages without counterplates. In case of couples of end-carriages with counterplates, replace letter H, in fifth position, with letter G. The weights given in the table refer to the individual end-carriage.

END-CARRIAGES FOR SINGLE GIRDER CRANES WITH CONNECTION PLATES TO "BRIDGE GIRDER" Joining of beam girder in "Supported" configuration Referred partial codes are applied to couples of end-carriages without counterplates. In case of couples of end-carriages with counterplates, replace letter V, in fifth position, with letter T. The weights given in the table refer to the individual end-carriage. END-CARRIAGES FOR SINGLE GIRDER CRANES WITH CONNECTION PLATES TO "BRIDGE GIRDER" Joining of beam girder in "Lateral + Supported" configuration Referred partial codes are applied to couples of...