Single girder overhead crane repair guide a hook

(A) demolition inspection hooks, axes,overhead bridge crane horizontal single girder overhead cranes, pulleys, bearings and clean lubrication
(2) Check the wear condition dangerous section
(3) Test the hook
(4) board hook overhaul
(1) hook, horizontal single girder overhead cranes, pulley shaft, not allowed to have cracks, threaded portion should not loose bearings intact,bridge gantry crane rotating wheels, thread undercuts Department has marks or cracks should be replaced.
(2) dangerous section wear more than 10% of the original height should be replaced.
(3) after the overhaul, the hook should do the test checks to 1.25 times the rated load of the suspension for 10 minutes, elastic hook mouth hook mouth opening shall not exceed the size of 0.25%,steel crane there should be no permanent deformation after unloading and cracks;
(4) the hook plate riveted, the board and the board of the gap, not greater than 0. 3mm