1. Introduction SL-type manual single girder crane is a light aircraft, suitable for factory equipment installation, maintenance, and no power of the workplace. Manual single girder crane is a major part of the bridge, carts transmission, manual monorail car and other components, driving carts and cargo lifting both hands to pull the chain drive, SL-type manual single-girder overhead crane, is based on JB / T10381-2002 design and manufacturing standards, and SDS and SH type manual monorail car and manual hoist supporting the use, become a light rail running small crane, this product is a regular crane  used for machinery manufacturing, assembly, warehouses and other places. 1. The metal structure part of the main beams of beam beam is welded into the channel beams and the main beam and then welded into one. 2. monorail and chain hoists, manual hoists lifting weights, monorail along the main beam See the instructions manual hoist to move, its structural features. 3. Run the agency. This product is used in the form of a manual drive transmission is the use of artificial pulling chain driven sprocket gear-generation dynamic driving wheel drive. 2. Product parameters from the weight (tons) 123 510, lifting height (m) 3 to 10, work systems A1-A3, span is 3-12 m and an operating temperature of -25 ℃ - + 40 ℃ range inside.