Mobile cranes mainly include crawler cranes, truck cranes, tire cranes, all-terrain cranes, and truck-mounted cranes.
Selection steps of mobile crane:
The selection of mobile cranes must be in accordance with itCharacteristic curves, tablesConduct:
Constant amplitude:According to the equipment or component to be hoistedPosition in placeSite-specificand so on to determine the cranePosition of the station,Once the location of the station is determined, itsThe amplitude is determinedFinish.
Fixed arm length:According to the equipment or component to be hoistedSeating heightDevice dimensionsSling heightand so onPosition of the station,, according to the lifting characteristic curve of the crane,Determine its arm length
Rated lifting capacity:According to what has been determined aboveAmplitudeArm length, by cranesLifting performance table or lifting characteristic curve, determine the crane'sRated lifting capacity
4) If the crane'sRated lifting capacityGreater thanCalculate the load, the crane selection is qualified, otherwise the crane is re-selected.
Calculate between boom and device, hook and device
and between the boomIf it meets the requirements of the specification, it will be selected, otherwise it will be re-selected.
Foundation Handling of Mobile Cranes:
1) The mobile crane must be in the following areasHorizontally on hard groundCarry out hoisting operations.
2) CranesWorking position(Including.)Location of the hoisting stationwithWalking routesThe foundation should be treated.
3) According to itsGeologyor toMeasured ground pressureBased on this, the appropriate method is used to deal with it, and the soil ground of the general construction site can be usedExcavation, backfill, and tampingmethod.
4) The ground should be done after treatmentStress testThe ground pressure resistance should meet the requirements of the crane for the foundation, 5) inComplex foundationsLifting heavy equipment, should be invitedSpecialized design of the foundation by professionals
HoistingbeforeIt must be carried outBasic acceptanceand keep a record.