I-grapple yi-double girder overhead crane exhotyiswe nge-emele ye-clamshell enokusetyenziswa rhoqo. Ngokwemilo ye-emele, ii-emele ze-crane zinokwahlulwa ngokweemele ze-clamshell, ii-emele ze-orenji zamaxolo kunye ne-cactus. Ibhakethi ye-Crane sisixhobo esisetyenziselwa ukuphatha izinto eziphathekayo, ngokukodwa eyenzelwe ukuhambisa i-powdery efanelekileyo kunye nezixhobo ezininzi ezifana neekhemikhali, izichumisi, iinkozo, amalahle, i-coke, i-iron ore, isanti, izinto zokwakha ngendlela yamasuntswana kunye namatye aqhekekileyo. njl isetyenziselwa ukubamba izinto ezinzima ezifana neeminerali, njl.
Bamba ibhakethi i-crane nge-Crane Bucket I-emele ene-emele inemihlathi emibini okanye ngaphezulu yeebhakethi ezinokuvulwa kwaye ivalwe kunye ukwenza indawo yokubamba imathiriyeli. Ngokokusebenza, ibhakethi lomatshini lingahlulwa libe yibhakethi yentambo enye kunye nebhakethi yentambo ephindwe kabini, eyona ixhaphake kakhulu. Umnqantsa wentambo omnye unokusetyenziselwa imisebenzi engaphantsi kolwandle kunye nonxweme ukuze ubambe kwaye uhambise imathiriyeli.
Intambo enye yokubamba isebenza kuphela kwi-crane enegubu elijikelezayo lokuphakamisa. I-double rope gripper isetyenziswe kwii-cranes ezixhotyiswe ngesakhiwo se-double hoist, ezisetyenziswa kakhulu ekwakhiweni kwamachweba, ii-docks kunye neebhulorho.
Ikhreyini yokubamba ibhakethi isetyenziswa ikakhulu kwiikhreyini ezixhotyiswe ngelungelo elilodwa lomenzi wechiza ukulayisha kunye nokothula imathiriyeli nakuwuphi na umphakamo. Ukwandisa amandla okunyusa ukusondeza umhlathi kwizinto eziza kubanjwa, amandla okuvala ayanda xa uvala, kunye nebhakethi ye-scissor inokubamba izinto ngokupheleleyo ngaphandle kokulahlekelwa, kwaye ingasetyenziselwa ngokukodwa kwiinqanawa ezinkulu zedekhi kunye nokulayisha. Ngokuxhomekeke kwinani leepleyiti zomhlathi, likwabandakanya intambo enye yomhlathi kunye nokubamba i-jaw grip, esetyenziswa kwezona zidumileyo. Ngokwamava aphuculweyo alo mzekelo, kuyilo lwexesha elizayo lwe-double-drum grapple, ubude bombhobho webhalansi yebhakethi kunye nobude bombhobho ophakathi kufuneka bube ngumlinganiselo ofanelekileyo. Kwakhona kunokwenzeka ukusebenzisa iintlobo ezi-2 zeentambo zetsimbi ngokwendlela ye-coil helix (ikhebula eli-1 elijikelezayo ngakwesobunxele, ikhebula eli-1 ngakwesokudla). Iyakwazi nokuthintela ikhebula ukuba likhulule kwaye liphule ngexesha lokusebenza.