eot crane inspection and maintenance every month

1 ) check the amount of wear of the overhead bridge crane brake pad liner should not exceed 2mm, the contact area of the pad and the brake drum is not less than 70% ; inspection of the mounting pin wear and lubrication conditions and the amount of wear of the pin should not exceed 5 % of the original diameter of the shaft and a small amount of wear of the mandrel should not exceed 5% of the original diameter and the ovality of less than 0.5mm.
Wear 2 ) Check the rope , and so if there is broken wire , wire rope lubrication checks .
3 ) Check the

Crane Co

hook for cracks , wear dangerous section exceeds 5% of the original thickness ; hook nut locking device is complete , the individual parts on the hook set is complete and reliable. Hook should be flexible rotation , no jamming .
4 ) Check all bolts are loose and shortages.
Fastening bolts 5 ) Check the motor , reducer base and individually fastened .
6 ) Check the Hoist crane gearbox lubrication , the oil level should be within the specified range, part of the oil leakage should take measures against leakage .
7) gears.
8 ) Check the wear of the rope pulley balance of pulleys and pulley shaft lubrication.
9 ) Check the status of a pulley , see if it flexible, without damage, cracks, wear special attention given pulley shaft.
10 ) Check the brake wheel , uneven surface of their work should not exceed 1.5mm, brake wheel should not have cracks, radial runout should be less than 0.3mm.
11 ) Check the coupling, which should not be the key and keyway damage , loose ; shaft coupling between two axial string momentum should be 2 ~ 7mm.
Health 12 ) to check the size of the car , should not have to chew rails, three pivot, start and stop Wiggler and so on. Check the wheel rim wear and tread , wear rim thickness should not exceed 50 % of the original thickness of the wheel tread wear should not exceed 3% of the original diameter of the wheel .
13 ) Check the cart track conditions , to see whether the bolts loose, shortages plate is fixed on the track, the track cracks and breaks ; gap between two rail joints whether 1 ~ 2mm ( summer ) or 3 ~ 5mm ( winter ) , the vertical joints , misalignment is more than about 1mm.
14 ) on the crane comprehensive cleaning , remove dirt on it .

hoist gantry crane

Cantilever crane is fixed on the cantilever can be fixed around the base of the rotating column , or columns rigid cantilever and transfer , together with the base supporting the rotatable relative to the vertical center line of the column and the composition of the Hoist gantry crane boom . It applies from the weight of small, round or operating the range of services sector occasions. General machine tools and other artifacts used to hold cards and handling. bridge gantry crane jib crane column to use more electric chain hoist as from domestic small -tonnage crane hoisting mechanism and operating agencies , less use of wire rope hoist and chain hoists . Rotation and horizontal movement to use more manual operations , the use of electric only when lifting larger .
1 , rotary wall cranes : Optional XN hoist type chain hoist , CXT wire rope hoists ; condition of A3; size car operation mode selectable electric, manual ; electric lifting way .
2 , selection of key data and purchasing conditions : Starting weight (t), spin wall length L (m), lifting height h (m), plant clearance height (m), rotation angle ( degrees ) , crane types, gourds type, whether to do the foundation , the car runs.