Safety operation procedures for gantry and derrick?

1 The erection and use of gantry and derrick must meet the requirements of the industry standard Safety Technical Specification for Gantry and Derrick Material Hoists. 2. The material specifications of the fastener-type steel pipe derrick are the same as those in Article 1. 3 The distance between the vertical pole and the longitudinal horizontal pole should not be greater than 1m, and the iron plate pier should be placed at the bottom of the vertical pole and padded. 4. Scissors should be set all the way around the derrick to the top, and the included angle between diagonal and the ground is 60. 5. The spacing between the horizontal rods of the platform shall not be greater than 1m, and the scaffold board shall be paved tightly. Double horizontal bars shall be used for lap joint, and the plate end shall exceed 15cm during lap joint, and each platform shall be provided with protective bars and skirting boards. 6 Two poles should be connected by butt fasteners, and the intersections must be connected by fasteners, and no binding is allowed. The 7-day wheel frame must be equipped with two crown blocks, and the jacking steel pipe or splayed bar must be added and fastened with fasteners. 8 Assemble the triangular column portal frame, and weld flanges at both ends of each column. When assembling the triangular column frame, it is necessary to check whether the connection of each component is firm and the bolts of each node must be tightened. Two triangular columns should be connected to the ground beam, and the ground beam should have anchor bolts at the bottom and buried underground to prevent sliding. When the ground beam is buried, the foundation shall be flat and compacted. 10 The unloading bridge platform should be set up at the entrance of each floor, two protective railings should be set up on both sides of the bridge platform, and a dense mesh safety net should be set up, and a splayed cross should be set up at the lower mouth of the bridge platform. 1 1 Derrick and triangular portal frame are forbidden to contact with electrical equipment, and reliable insulation protection measures should be taken. Lightning protection facilities should be set when the height is above 15m. 12 derrick and gantry must be equipped with safety protection devices such as ultra-high limit, broken rope insurance, mechanical, manual or interlocking positioning support rods. 13 The aircraft with an altitude of 1 0 ~ 1 5m shall be equipped with1group, and each additional1group shall be added, with 4 in each group. The cable wind rope shall be made of steel wire rope with a diameter of not less than12.5mm, and the ground anchor shall be buried as required. It is forbidden to tie the cable wind rope to the tree. And don't use a crossbar to adjust the length of the wire rope. 14 A safety protection shed with a length of not less than 2m should be erected on one side of the gantry and the first floor gantry of the derrick, and the other three sides must be closed. Safety doors must be installed on each unloading platform and hanging cage (plate), and passengers are not allowed when the hanging cage (plate) is running. 15 The guide pulley of gantry and derrick must be provided with a solid anchor separately, and the steel wire rope from the guide pulley to the winding drum should be protected when passing through the passage. /kloc-the vertical distance between the 0/6 crown block and the top feeding platform shall not be less than 6m, so the vertical distance between the highest lifting position of the cage (plate) and the crown block shall not be less than 2m.

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