What're the commissioning of Gantry Crane？
(A) Visual inspection:
(1) Preparations and check:
i, Turndown the whole circuit, ensure the installation meet the requirements.
ii, Check the following parts:
a, The crane dimensions;
b, If the steel structure become deformed, welding seam crack.
c, To refuel the lubrication point.
d, The whole running gear move flexible.
e, Fasteners solid connection.
f, Qualified gear connection.
g, Acceptable brake installation.
h, No obstacle for crane moving.
i, Whether the steel rope intersect or knot. The rope length coincide with the lifting height.
iii. Electrical appliance:
a, Check the circuit and insulation resistance of electrical appliance.
b, Check the wiring connection after cutting power.
c, Check the motor wiring connection.
(B) Load lifting test
(1) Make a thorough check to the installed gantry crane to find if there are any parts missing or wrong, if the wirings are firm and the grounding is available.
(2) Turn on the power to test electric leakage and the conformity of grounding.
a, Press down the travel push button of the gantry by flashes to check if the travel direction of the gantry is uniform. Then make it travel forward and backward for several times to check the stability of travel and the quality of installation of the rails.
b, Make a traversing test and hoisting and lowering test of the trolley and electric chain jack in the same way as in (3).
c, After that, start the heavy loading test. First, do the test with nominated weight. Shut down the crane when the load is lifted up by 5cm and check if has any abnormal situations. Then lift and lower the load repeatedly to check the reliability of brakes. Finally, do the test to the loaded trolley for latitudinal movement, checking the reliability of the brakes in the same way as in (3).
d, Overloading test. After finishing all the above tests, increase the load by 10% to see if any abnormal conditions in static state.
e, Do the same tests to the electric chain jack according to (5) and (6).
f, After finishing the above tests, test the gantry crane with nominated load for latitudinal movement. It is required that the test should cover the full length. Pay attention to check the reliability of the brakes and if it is difficult to move. Clear out the problems if any.
