LH Overhead Crane with Electric Hoist Use and Maintenance Manual Shanghai Zhenhua Port Machinery (Group) Longchang Lifting Rig Co., Ltd. Contents Product overview 2 II Introduction of the product structure 3 Cart part 4 Lifting trolley part 5 Power supply system 6 Installation missioning 7 Travel mechanism 7 Lifting mechanism 10 Rope guide 12 Ratchet-pawl mechanism 12 Lifting limit 14 Power supply mode 16 Electrical control system 17 Overview 17 Control classification 18 Composition of the lifting control system 18 Composition of the travel control system 20 Classification of deceleration switches 22 Protection function 22 Button station 23 . . Operating instructions 24 Maintenance 25 . . Component discarding conditions 26 Steel wire rope 27 Hook pulley block 28 Wheel 28 VII Troubleshooting guide 29 Product overview Design and manufacturing basis: National standard: GB/T3811-1983 Design Rules for Cranes; GB/T6067-1985 Safety Rules for Lifting Appliances; machinery industry standard JB/T3695-1994 Overhead Crane with Electric Hoist. Refer to standard Code for Design of Lifting Machinery in Europe and related standards of ZPMC of our group. The structure types of the repair crane of the machine room are divided into double-beam and single-beam overhead crane with electric hoist. For port Mechanically, it mainly refers to the double-beam overhead crane with electric hoist. It mainly consists of the cart bridge, trolley bridge and three mechanisms of cart travel, trolley travel and lifting. (cart track and rail bearing beam. Lighting in the machine room shall be provided by the user. Lighting shall guarantee the degree during use or repair and maintenance). The material, lubricating oil and so on used for various parts shall be harmless to the human body. The bridge is the main ponent of the repair crane in the whole machine room, and various section characteristics conform to the stress conditions. During the design and manufact
