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Single-Girder and Double-Girder Semi-Portal Cranes

Semi-Portal cranes use a trolley drive of portal on rails situated at two levels- on the floor via wheels or on a rail situated into ground and on crane railway on building construction or on self-supporting pillars. Supporting steel construction (semi-portal) consists of one or two main girders and one or two main pillars.

Cralif, s.r.o. manufactures and supplies single-girder semi-portal "gantrycranes with capacities up to 25Te SWL (25000 kg) and double-girder semi-portal "gantrycranes with capacities up to 80Te SWL (80000 kg). Also, special semi-portal cranes are a matter of course.

Technical Information

  • Maximum load bearing capacity up to 25000 kg and 80000 kg
  • Colour: RAL 1007
  • Span limited by transporting capabilities
  • Hight of lift: up to 15 m
  • Speed of crane trolley drive: normally up to 40 m/min, smooth moving
  • Speed of hoist trolley drive: normally up to 20 m/min, smooth moving
  • Speed of lift: up to 19,2 [m/min]
  • Lift of hooks: two-speed (the main lift and micro lift)
  • Type of profile: tube-shaped profiles with “I” cross section or box welded construction
  • Girders are made of box welded construction or tube-shaped profiles with “I” cross section
  • We supply standard chain hoists LIFTKET or rope hoists STREET
  • Controlling via hanging button-controllers or via radio remote controllers
  • Power supply of crane: via cable trolleys, via closed trolleys covered by plastic or via energy chains
  • Crane setting: outside and inside

Advantages

  • Each crane is projected to measure according to customer´s requirements to be adapted to a place and shed´s conditions (or to open space) and still work effectively and safely
  • Lay out of crane weight into two end carriages guarantees safe handling with load
  • Long-term operation with minimal costs for maintenance and without any problems
  • Radio remote controller
  • Safety hooks prevent the load from sliding
  • High load bear capacity

Accessories and Options

  • Large selection of various kinds of slings made by the Cralif company available from: http://viazacieprostriedky.cralif.sk/en/
  • In case of remote control, the crane could be equipped with emergency control via the hanging button-controller which could move along the whole crane independently of crab trolley drive or it could be connected to the main switchboard of the crane via connector
  • Crane is equipped with two hoists working either independently or in tandem (at the same time) using just one controller
  • Automatic control system
  • Anti-collisional systems in case of several cranes being on one railway
  • Colour according to customer´s requirements
  • Modification for use in potentially explosive atmospheres
  • Version with manual drive of all mechanisms
  • The possibility to choose between rails or wheels for the side unfastened to the crane railway

Why Cralif?