The solution to the problem of crane installation and landslide

1. Assembling of electric double beam bridge crane bridge frame.

Connect the bridge frame with bolts in the middle of the beams at both ends. The main dimensional deviation of the assembled bridge frame should meet the following requirements: the span deviation value should be within ±5mm, and the two main beams should have (1~1.4S/1000mm) upper parts. Arch value, the side bend of the two main beams should not exceed S/2000mm, and the diagonal difference of bridge D1~D2 should not exceed 10mm. It is strictly forbidden to tie the walking platform or any mechanical parts when lifting the bridge. When tying the main beam or end beam, under the wire rope Need pads.

　　2, the electric double girder bridge crane is off and installed.

Place the trolley on the assembled bridge track. Ensure that the active wheel single beam crane of the trolley is in contact with the track surface over the full length of the track. The gap between the driven wheel and the track shall not exceed 1mm, the gap area shall not exceed 1m, and the total amount of the gap area The length must not exceed 2m.

　　3, electric double beam bridge crane control room installation.

　　 According to the relevant size and technical requirements on the drawing, install the control room, to the wire block, the conductive rail, etc.

　　4, winding of electric double girder bridge crane wire rope.

It can be seen from the wire rope winding direction in the general drawing of the trolley that it bypasses the movable pulley on the hook and the fixed pulley on the frame and is fixed at both ends of the drum. When the lifting mechanism is lowered to the lower limit, there are many places where the wire rope is fixed on the drum. At three laps.

Theoretically speaking, after the gantry crane is fixed, the electric single-girder crane will basically not have a large displacement, but it is because of the unstable foundation of the running track, the relatively low working environment and the influence of many factors such as unreasonable track adjustment or deformation. This makes it possible for the crane to have a landslide. For such a major accident, different methods are generally used to solve it.

The most conventional method is to separate the various rotating parts of the crane and send it to the manufacturer for repair, but this will inevitably affect the production process, so sometimes temporary methods are used to repair the crane. The parts that stopped rotating due to the landslide were fixed, and the cracks or damage were removed and repaired by welding.