What are the steps to install the girder gantry crane

Automatic hydraulic crane gantry crane girder installation steps

• Automatic hydraulic gantry crane lifting beam installation steps :•

• 1 ) lifting beam placed on a smooth , firm , to prevent the dumping ;•

• 2 ) According to the drawings hanging beam geometry inspection , special attention lug Boatswain center distance from the shaft hole center roof , and the relationship between the gate hanging ears ;

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• 3 ) Check the hanging shaft cleaning , cylinder , hydraulic equipment , tanks, piping ;•

• 4 ) Check the motors, solenoid valves, cable insulation ;•

• 5 ) hydraulic device tightness test shall comply with the drawings and specifications , the use of the seal test pressure of 1.2 times the working pressure , typically about 7.2Kg/cm, kept 36 hours without leakage ;

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• 6 ) Start the pump, check the axle pin retractable flexible movement without resistance , leakage , travel limit , for the right ;

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• 7 ) After passing the test , gantry crane china lift gates and automatic lifting beam test with , check the relevant dimensions shall comply with requirements of the drawings .

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Gantry crane girder strength and stiffness of static load test method

• Door main beam strength and stiffness of static load test conducted according to the following methods :

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• 1 ) will be open to the trolley carts ends in two main beams hung piano wire or cable in the middle of the main beam hammer hanging from the beam line and record or near -line hammer set the ruler and record readings.

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• 2 ) The owner of the car open to large central beam position . electric hoist single girder gantry cranes Lifting the order of 75% , 100% and 125% of rated capacity , when the load off the ground about 100mm, rest 10 minutes , then lifted load, check whether the door has a permanent deformation , and finally the car parked in the middle of gantry crane girder , from up to 100% load, deflection measurement under two main beams, shall comply with the relevant regulations , which should be no more than (1/700) S.

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• 3 ) When the load lifted , single girder gantry crane the main beam deflection should recover , without permanent deformation , will be open to the ends of the car , the main beam is detected door arch value should not be less than : span (0.7/1000) S, S is door span.

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• 4 ) Vice- hook rated static load test with the main hook the same, but do not need to measure the deflection of the main beam was recorded .