Installation and reconstruction of gantry crane maintenance requirements

According to the National Quality Supervision, Inspection and Quarantine, the installation must meet certain specifications  hoist crane  system.

1, rail mounting

Rail mounted on a solid basis, in accordance with the relevant provisions of the track (GB/T10183-2005) for installation, joints can be made directly head can also be made oblique joints, joint clearance is generally 1-2 mm, in the cold winter construction or installation, when the temperature is below the temperature year-round use, and the difference in the 200C, should consider the temperature gap, typically 4-6 mm, two rail ends (total of 4), install robust off track limiting device ( such as adding welding stall structure), to prevent the  jib crane  from the ends of the rails, a serious accident.

2, ground beams, leg mounting

If the box-shaped structure is segmented legs apart transportation, long hole has been processed by the manufacturer with a predetermined fastening bolt can be connected.

Outrigger truss structure is disassembled for shipment in construction by a qualified installer units corresponding vehicle data shall be reassembled, first with bolts to connect the various components, and then checked and adjusted with reference to the items listed in geometry, it meet the design requirements.

3, bridge installation

The girder span, due to transport conditions, as the staging manufacture. For this bridge installation, you should first install the selected site location, the paragraphs bridge with preloaded bolt together into a whole. Connection can use carts orbit has paved surfaces as benchmarks. Bridge structures need to be riveting, if carts running track surface height from the ground can not meet the riveting job, you can take a certain height another shelf as benchmarks.

4, trolleys and ground beam installation

Li loaded under normal circumstances have adopted this method to install. Trolley mounted on the drive track and effectively support stay. Then packed with ground beam trolley  Steel crane  into the whole leg, align hinge hole, put hinge fastening shaft head baffle and bolts, and then the entire cable with enough leg fixed Well, to be lifted to relax after a fixed cable tray, attention is still required sufficient manpower pulled, and finally the legs shifted under the bridge, and the bridge connected.