BRIDGE GIRDERS

Depending on capacity & span fabricated from standard I-Beam or plate welded Box type with diaphragms, designed to sustain all stresses arising due to vertical and lateral forces with impact. Steel plates used for bridge girders and diaphragms are as per IS: 2062.

END CARRIAGES

Fabricated from rolled steel sections or plates and welded together to form a box with suitable stiffening wherever required. End Carriage consist two nos. double flanged solid forged wheels for long travel motion. These wheels are mounted on axle with anti-friction spherical roller bearings.

HOISTING MECHANISM

Hoisting is through Power - Master make Wire Rope Electric Hoist for single girder crane or Crab for double girder crane. The crab frame is made of steel plates and rolled sections in welded construction.

LONG TRAVEL MOTION

The wheels of each end carriage are driven by independent synchronized drive system mounted near each end carriage. The drive system comprises of crane duty electric motor, gearbox and brake.

PLATFORM

In case of double girder crane a full length chequered plate platform is provided with safety hand railing on one side of the crane and two short platforms at each end carriage for the maintenance purpose.

CONTROL PANEL

Sheet metal fabricated dust proof control panel houses contactors for all motions, MCB and other electrical components arranged logically.

DOWN SHOP LEAD

Shrouded Bus Bar conductor with current collector arms.

CONTROL & SAFETY

Limit Switches are provided to prevent over hoisting and over traveling. Rubber buffers are provided at the four ends of end carriages and crab (for double girder crane) to prevent the over traveling of crane in L.T. & C.T. motion.

OPERATION

Floor operated through suspended pendant push button station for all motions.

UNDER SLUNG CRANE

Under Slung cranes are distinguished by the fact that they are supported from the roof structure and run on the bottom flange of runway girders. Under Slung cranes offer excellent side approaches, close headroom and can be supported on runways hung from existing building members if adequate.

Optional Features against requirement

• Cabin operated cranes
• Crane operation through wireless remote control
• Flameproof cranes
• Crabs with auxiliary hoist
• Cranes with Variable Frequency Drive (VFD)