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Products > Cranes > Flame proof Crane
GENERAL SPECIFICATION FOR FIRE PROOF CRANE :
- The drive shall consist of flame proof motor, brakes, limit switches and push button stations.
- All electrical fittings shall be flameproof suitable for group IIA and IIB vapour.
- Flame proof limit switches for extreme ends in horizontal and vertical movement.
- Inching facility (for up & down motion as well as forward & reverse motion).
- Flame proof local control panel housing
- Main incoming isolator.
- Contactor, relays, fuses etc.
- Overload and short circuit protection for motors.
ELECTRICALS :
Power Cables shall be 1100 v grade, PVC insulated, GI armoured & PVC overall sheathed. Conductor shall be of copper below 10mm2 & for sizes above 10mm2 cables shall be XLPE / SWA. Control cables shall be multistrand copper conductors of minimum 2.5 sq. mm. All motors shall conform to squirrel cage induction motors, TEFC, IP – 55, Class ‘F’ insulation, flameproof suitable for Group IIA & IIB vapour, CMRS certified.
MECHANICALS :
All metal-to-metal contact are of non-ferrous i.e. phospherous bronze like cross travel wheels.
INSPECTION AND TESTING :
- The Crane shall be offered for final inspection.
- Client / authorised representative shall at all times have an access to supplier’s / suppliers sub contractors workshop to witness fabrication stages.
- Internal inspection record shall be maintained by supplier / suppliers sub contractor at all times, if any stages are found lacking by way of proper records. Client reserves, the right to ask supplier to modify / amend the fabrication stage.
| Crane |
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Hi-tech Make |
| Motor |
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Crompton / PEW / Bharat Bijlee |
| Gear |
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Hi-tech make |
| FLP junction box |
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SHAYAM SWITCH GEAR WITH CMRI CERTIFICATE |
| PBS |
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SHAYAM SWITCH GEAR WITH CMRI CERTIFICATE |
| Limit Switch |
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SHAYAM SWITCH GEAR WITH CMRI CERTIFICATE |
| Brakes |
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Pathe / BCH make with Micro Make Enclosure |
| Wire Rope |
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Usha Martin (Galvanized ) |
| Control Panel |
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SHAYAM SWITCH GEAR WITH CMRI CERTIFICATE |
Main isolator switch,
Contractors, relays, LED |
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Telemechanic / Siemens / L & T |
| Fuses |
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GEC / Siemens / L & T |
Specific Design Advantages of “Hi-Tech” Flame proof Crane
1. |
Design |
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"Hi-Tech” Cranes are designed as per lates IS:3938. |
| 2. |
Modular Construction |
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“Hi-Tech” Cranes are very compact with elegant appearance. Crane motor, brake, electrical control gears & trolley drive Unit are easily accessible. Each unit can be separately assembled and can be easily dismantled. This simplifies repairs, maintenance cost and down time. |
| 3. |
Gear Boxes |
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The gear train is precision hob cut from alloy steel material duly heat treated for optimum wear resistance. The gears are running on antifriction ball bearing in a totally enclosed oil bath gear box with splash lubrication of all gears & pinions for fast heat dissipation, smooth operation and long life. |
| 4. |
Rope Drum |
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The rope drum is of sturdy construction made of M.S. Seamless pipe and machined cut spiral grooves mounted on self-align ball bearings ensure smooth running. |
| 5. |
Rope Guide |
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A rope guide completely encircling the drum is to hold the rope in its groove at all the times and can not uncoil even-when the rope is fully unloaded. Rope guide is provided for perfect winding for rope in drum groove. |
| 6. |
Motor |
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Motor are totally enclosed, fan cooled, squirrel cage crane duty confirming to IS : 325 with high starting torque. |
| 7. |
Brake |
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A. C. Electromagnetic FAIL-TO-SAFE shoe/disc type brake for hoisting motion which ensures perfect safety in case of power failure. It is mounted externally on the rear end of the motor for ease of maintenance. |
| 8. |
Limit Switch |
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Snap action type roller limit switches are provided to avoid over-hoisting and over lowering actuated by rope guide. |
| 9. |
Control Panel |
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A dust & vermin proof control panel incorporates heavy duty Contactors, control transformers, relays, HRC fuses with proper ferruling & spacious for ease of maintenance. |
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