Single Girder Crane

Additional Details

STRUCTURE :
Radiographed butt welded joints ensure defect free safe rigid structure. The material of construction confirms to IS 2062 & the Bridge designed for minimum vibrations.
HOIST MECHANISM :
The rope drums are fabricated out of seamless tubes or steel plates conforming IS 2062 & driven by a motor, through totally enclosed oil immersed Gear box with helical teeth, flexible gear connection. The lower block consists of encased rope sheave of adequate dimensions as recommende by the relevant standards.

CROSS TRAVERSE MECHANISM :

Wheel driven by electric motor through totally enclosed, oil immersed gear box, floating shafts, flexible geared coupling drive for input & output connections.

 

LONG TRAVERSE MECHANISM :

Single / Twin drive by electric motor through horizontal / vertical gear box. Flexible geared coupling drive of input & output connections.

 

BRAKES :

Fail safe, Electromagnetic Disc / Shoe or Electro Hydraulic Thrustor Brakes of 150% torque or more are fitted on shaft extensions in all motion. For heavy duty craces, a second brake can mounted to ensure fail safe operations.

 

CRANE CONTROL :

From floor through Pendant Push Buttons / Open cabin / totally enclosed cabin, operation at 110/24V, Electrical switch gear mounted inside dust proof control panels with suitable access for maintenance.

 

LIMIT SWITCHES :

The hoisting / lowering motion is prevented from overshooting the pre-determined range by two rotary type limit switches, for the Cross & Long Traverse motion lever type limit switches are provided.

 

POWER SUPPLY SYSTEM :

To hoist & cross traverse through trailing cables to long travel through trailing cables / MS Angle Iron Conductor / Shrouded the DSL Bus bar conductors to customer’s choice.

 

WHEEL ASSEMBLIES :

Trolley & crane wheels are straight treaded, double flanged steel wheels on antifriction roller bearing in special L – Type bearing blocks. Open gear & Pinion type wheels also used.

 

Salient Features :

 

    Designs conform to IS 807, IS 3177 or IS 4137.

    Optimum design ensuring minimum dead weight, wheel load, head room and clearances, reducing
    building costs.

    Forged wheels moved on spherical roller bearing resulting in trouble free service for cross and long
    travel.
    Wide range of lifts.

    Wide range of speeds for hoisting, micro-hoisting and long travel to suit every operational
    requirement.
    Hobbed gears from high carbon alloy steels for long trouble free service.
    Standardised unit sub-assemblies are used complete range ensuring spares supply from stocks.
    Quick deliveries and prompt after sales service.

    V.V.F Drive used in Double Speed Cranes.