Single girder bridge crane hook

Single girder bridge crane hook breakdown maintenance matters needing attention

In the process of using, often encountered the hook lift up fault of single beam bridge crane. The cause of this failure may be due to problems with the power line, There is a problem with the line control or the control device. In addition to the rising failure, the hook can not drop, the hook is not flexible and there are cracks in the hook and other problems, there are security risks. As a common fault in the single beam crane fault, it is important to have a correct understanding of the hook fault.

The hook is the most common device in the single beam bridge crane, Bearing the weight lifting load. In operation, the hook once damaged, broken, the consequences will be unimaginable. Cause the hook to crack and break. In order to ensure the use of safety, the use must be strictly according to regulations, strictly prohibited overloading. Check the opening of the hook, the wear and tear, as well as the corresponding security devices, such as scientific analysis. If there is a crack in the hook, follow the GB10051—88 standard to deal.

Single girder bridge crane hook maintenance matters needing attention

1. When crane is repaired, disassemble, check the hook, axle, transverse single girder bridge crane, pulley, bearing, and clean lubrication.
2. On the hook can’t exist crack, otherwise, follow the rules. The threaded parts should be secured and the bearings are not damaged. Turn the pulley, relief groove of the screw knife scar or crack, It should be scrapped and replaced.
3. After the overhaul of the hook test, with 1.25 times the rated load suspension for more than 10 minutes, The elastic opening of the hook is no higher than 0.25% of the original size, and there is no deformation or cracks after the download.
4. When the plate is riveted, the clearance between the plate and the plate is not greater than 0.3mm.