Double Girder EOT Cranes
Features:
- Capacity up to 300 Tons.
- Barrel winch construction with True Vertical Lift
- Robust construction suitable for heavy duty application.
- Alloy steel, hardened, precision cut gears.
- Foot mounted type fabricated gearbox casing horizontally split at center line for ease of maintenance for hoist
- Foot mounted hydraulic thruster brakes for hoist.
- Lift and speeds to suit your specific application.
- L type housing for long travel wheels.
- Full length (along the crane span) platform on the long travel drive side girder.
- All motors provided shall be squirrel cage/slip ring Crane duty of reputed make.
- VVVF drives & resistance box are available as an option
Bridge Girder And End Carriages
Shall be fabricated out of steel plates welded together to form a box In addition to the required full length, short length diaphragms shall be inserted whenever required to transmit the trolley load to the web plates and to limit the maximum stress in the trolley rains within the safe permissible limits, All diaphragms shall bear against top flage.
Trolley Frame
The trolley frame shall be fabricated out of steel plates and made rigid by providing suitable diaphragms.The frame shall be totally covered an openings shall be provided wherever required.
Wire Rope
The wire rope provided shall be of 6 x 36 /6 x 37 construction, best plough steels, STEEL core having a tensile strength of 160 /180 kg/mm and shall be of parallel right hand ordinary lay as per IS: 2266.
Wheels
The wheels of the trolley and the end carriages shall be forged out Of EN 9 material, double flanged straight tread type fitted with anti friction bearing mounted on 'L' type bearings housing for the ease of maintenance.The wheels shall be hardened up to 320 BHN.
Rope Drum
The rope drum shall be made from mild steel seamless pipe designed to withstand the compressive stresses by the wound of rope and the bending stress due to beam action of the drum and shall conform to IS: 3177.
Gear Boxes
All gear boxes provided shall be totally enclosed splash lubricated type. The gear boxes casing shall be fabricated out of steel plates and duty stress relived. ALL Gears abd pinions provided shall be of helical types only.Gears shall be machine cut out of EN 19(245-280BHN) materials. The gears shall be designed in accordance with IS: 4460.
Couplings
Special type of flexible geared coupling between the hoist and rope drum shall be provided.Universal coupliongs shall be provided on the input side of the gear box.Geared couplings with floating shaft arrangement shall be provided for the cross traverse and long travel motions.
Platform: M.S.Chequerd plate / anti skid platform shall be provided for full length on drive side of the bridge girder.
Electrical Equipments
- All motors provided shall be 6 starts/ hours, 40% CDF slipring crane duty of reputed make.
- Power supply to the trolley shall be through PVC flexible trailing cable fitting on cable trolley moving on a separate steel track.
- AC operated electro hydraulic thruster brakes shall be provided.
- Stainless steel formed grid type well ventilated Resistance box shall be provided.
- Hoist motion shall be provided with rotary type limit switch to prevent the hoox from over hoisting and lowering.
- Shunt lever type limit switch shall be provided on cross traverse and long traverse respectively.
