Eurocrane Explosion-proof Crane Technical Description

EUROCRANE explosion-proof crane is mainly divided into gas explosion-proof and dust explosion-proof;Gas explosion-proof crane covers zone 1 and 2, dust explosion-proof products cover zone 21 and 22, temperature classification is T1~T4. The capacity of explosion-proof crane is 1T~200T.

Application industry of Gas Explosion-proof Crane：

    Chemical plants

    Refineries

    Drilling platforms

    Oil production ships

    Pharmaceutical plants

    etc. …

Application industry of Dust Explosion-proof Crane：

    Grain mills

    Plants for manufacturing synthetic fibres

    Mixing plants

    Feed plants

    Grinding plants

    Silos

    Sawmills

    etc. …

In accordance with the new ATEX 100a (94/09/CE app icable in 2003), and CE

regulations (CE marking, Documentation, CE certificate approval).

Explosion protection according to Ex de IIC/IIB T4 degree (EN/DIN) as standard

Two-speed pole change hoisting motors with  thermistors

Hoist upper and lower limit switches

Electro-mechanical overload protector

Motor protection IP55 according to EN 60  529

Push button box with an emergency button

Ergonomically designed hook with safety  latch

Galvanised wire rope

4.1 No-spark Hoist Electric Motor Non-spark motor imported from Italy which ensure the safety and reliability. The standard dual-speed hoisting motor with thermistor for harsh working environment. 60% continuous power connection and cooling fan. Ingress Protection level IP55.
4.2 Limit Switch The explosion-proof rotary up-and –down limitswitch is fixed on the end surfaceof the drum and effectively controls the rise and fall of thehook. The limit switches have a rugged external enclosure made of G20 cast iron,ensuring protection against water anddust. Transmission and gear driving shafts are made of AISI 316 stainless steel to prevent oxidation andwear.
4.3 Drum The high-strength  hoisting  drumis produced with multiple processing steps, resulting in accuratesize and durable  performance.  The  multi-stage lifting height limiter installed  atthe  end of  thedrum enables  effective  slow-down  and stop, allowing saferoperation.
4.4 Hook The hook is made  ofhigh-density copper, and the copper  film  is  more  than  60  microns  thick,which prevents sparks caused bytouching.
4.5 Explosion-proof ElectricCabinet Modular  electriccabinet with  IP65  protection  as standard configuration, providing low voltagecontrol, easy maintenance and highsafety.
4.6Cross TravellingMechanism The Cross Traveling movement drive system is  controlle by One Central all compact geared motor brake driveunits  Two wheels are motorized by one  compactgeared motor brake drive units. Explosion-proof type controlled by 2-speed drivemotor.
4.7Long TravellingMechanism The travelling movement drive system is controlled by two identical compact geared motor brake drive units. Two wheels  are motorizedby two identical compact geared motor brake drive units
Motors  are  controlledby a  Variable  speed  inverter(Exlosiontypecontrolledby 2-speed drive). Buffers typerubber Two step limit switches.1 deceleration limit switches and1 stop limitswitches Protection Grade: Ex de I B/IICT4

4.8 CraneGirder

The crane girders are of welded girder construction. This result in lower dead weights

withahighdegreeofverticalandhorizontalrigidityandsmallerwheelloadsbeing

transmitted to the cranerunway.

-The crane girders are of welded box-type girderconstruction

-The vertical flexibility with full load is less than 1/1000span.

No cuts or sections in main girders for both hallcranes

Maintenance platform is installed along one of the girder of the crane for both twohall

cranes. On the opposite girder only platform to maintain long travel movementwheels at both sides aredesigned

Safety lines and hand rails on both girders and in thetrolle areinstalled

Electrical cabinets are placed on one end of maintenanceplatform

Steel protection plates are fixed on the cranes of insulate conductor side toavoi the hook hitting power supplyconductor

Power and ControlPanels

The crane  that  weare offeringis designed to  meetthe required functions and requirement stated in your specifications, as well as for the operating conditions.The design is selected according to ourstandard,which has been especially developed for cranes in your area ofapplication.

The sub-assemblies used by are standardized equipment of renownedmanufactures and  have been approved for specific crane  o eration  by our  testlaboratory.

heir characteristics regarding impact/vibrations,  wear  and  safety  were examined. A continuous high quality standard is  ensuredb seriespr duction andstandardized sub-assemblies.

The electrical equipment is accommodated in robust stainless steel control cubicles, on the cranegirder.

Type of enclosure IP65.

All movementscanbeswitchedoffbyactuatingtheemergency-offswitchat the control station via a maincontactor.

The entire equipment is easy to install and dismantle due to the use of threadedbolts and top-hatrails Cable inlet from cablegland

Power supply cable and control cable along thegirder

The power supply from the crane to the hoist unit is by means of a highly flexible flat cable. A protective earth conductor is fitted as standard. A crane switch isprovided.

Powersupply:400V/50Hz

48V low voltagecontrol

Travel endswitches

Long and cross travel limited by means of preliminary and final limitswitches

Overload protection: In the event of overload, the hoist unitswitches

Eurocrane’s explosion-proof   control  panel comply   with theATEX  standard,explosion-proof  gradeEx  tD  IIC  Zone1 T3/ Ex  TdIIB Zone2  withhighsealing performance, ensure no sparks come out thecabinet.