HOT-EOT Cranes (Single Girder Type/Double Girder Type):
We are manufacturer of Single Grinder HOT/EOT Cranes up to 20 M.T.capacity and Double Girder HOT/EOT Cranes up to 60 M.T.capacity.
Our equipments are designed and manufactured in accordance with STD I.S.

Specifications:

I.S.807:
Code of Practice for Design, Manufacture, Erection and Testing (Structural Portion) of Cranes and Hoists.

I.S.3177:
Code of Practice for Design of overhead Traveling Cranes and Gantry cranes other than Steel Mill Cranes.

I.S.4137:
Code of Practice for Design of Steel Mill Duty Cranes.

1)      Structural Parts of Crane: Structural Parts of the Crane's are fabricated from rolled steel section or plates)

i)                    Main Girder: main girders are of plate fabricated welded box type construction or rolled steel section type as per requirement in design for single girder    crane and double girder crane, Design to sustain stresses arising due to vertical & lateral forces with impact to which they are subjected. The maximum deflection of the main girder is limited to 1/1000 the span of live loads including the weight of the trolley.

ii)                   L.T. End carriages: Long Traveling End Carriages are fabricated from

            rolled steel section or plate fabricated type as per design and capacity

           of crane

 

 

                 iii)         Crab Frame: Crab frame is fabricated from rolled steel sections or plate

                              fabricated type as per requirement in design and capacity of crane

 

iii)                 Platform: M.S. Checkered plate/anti skid plate's full length platform

            shall be provided one side of          

 

 

2.)    Wheel Assemblies:

     The wheel of the trolley & the end carriage will be used forged steel            conforming to IS 2707 GR.II duty spin hardened to 300 BHN or steel cast                    EN-8, material, double flanged straight tread type fitted with antifriction type                    bearings mounted on 'L' type bearing supports or Section type desired by                    crane capacity and its span.

 

3.)  Gearboxes:      

 All gearboxes, which are used in Hoisting, L.T. and C.T., are helical type with

M.S. Fabricated Housing or Graded C.I. housing. Pinions and output shaft are supported on antifriction type roller/ Ball bearings. All Gears and Pinions are of En-8 / En-9 materials precision machined and teeth cutting by hobbling machine duly hardened to with stand the heavy loads.

 

4.)  Rope Drum:

      The rope drum is of mild steel fabricated construction having right and left hand spiral grooves machined to suit the hoisting ropes. The drum is of such length that there is not more than one layer when rope is full wound. And its mounted on self aligned type roller bearing.

 

5.)  Motors:

      All motors which is used in crane are foot mounted type or flange mounted type squirrel cage induction motor or slip ring type specially designed and manufactured as per IS 325 for crane duty of reputed mark are used,

 

6.)  Brakes:

      Electro hydraulic thruster type or Electromagnetic Shoe type or Electromagnetic disc type brake is providing in the Hoisting L.T. & C.T. as per crane capacity required torque and design. Of reputed make these brakes are automatically released when the motor circuit is on and is applied the motor circuit is off.

 

7.)  Wire Rope:

      6 * 36 construction special plough hemp core flexible steel wire rope, having safely factor of 5 for class II and 7 for class III duty, Is provided on the hoist. Galvanized and other construction of rope can be provided for special application.

 

8.)  Bottom Block:

      Bottom Block Assembly consisting of forged steel hook mounted on thrust Ball Bearings, with required diameter rope sheave and hook plates made out of steel

 

9.) Controls:

      All crane have provided with a control panel comprising of Siemens/L &T/ BCH or parties approval make heavy duty, direct-on line reversing type air brake contactors, transformers and fuses or MCBs. All these are housed in dust proof M.S. fabricated sheet metal panel box. The pendant push button station is provided at adequate height duly suspended by steel chain or wire-rope, operating at 110 volts to avoid shock.

 

10.)Limit Switches:

      In the hoisting one number shunt type geared limit and in the L.T & C.T Motion one number lever type limit switch for each motion of reputed make is provided to prevent over lowering, over hoisting, and over motion          of L.T. & C.T.