Cold shearing machine is a device for shearing and cutting the length of the rolled piece from the cold bed.

　　The cold shear is driven by the top motor through the elastic coupling by the first gear reducer, the big gear sleeved on the crankshaft and the right half clutch fixed on the gear to rotate idly. When the shear starts to work, the roller of the brake device is sucked by the electromagnet. At this time, the left half clutch mounted on the crankshaft with sliding keys is pushed to the right by the spring and combined with the right half clutch. Therefore, the scissors installed at the right end of the crankshaft can obtain straight up and down motion by driving the crankshaft to rotate.

　　The upper cutting edge fixed on the scissors moves in a straight line with the scissors. The lower cutting edge is fixed on the frame and does not move. When the upper cutting edge falls down, the cutting of steel is realized. When the shearing is finished, the controller automatically operates to cut off the electromagnet, the roller of the brake device is pulled up and moved under the action of the spring to release the clutch, the crankshaft stops rotating, and the shears are restored to the original highest position under the action of the balanced spring. The cold shear machine thus realizes the task of shearing the fixed length and the cutting head by circulating and reciprocating.

　　Maanshan Zhicheng Mechanical and Electrical Co., Ltd. is a joint-stock enterprise established after the restructuring of the original state-owned enterprises. The company is located in Maanshan, a beautiful national civilized garden city, on the South Bank of the Yangtze River. Near Nanjing Lukou Airport, 30 kilometers, railway, highway, waterway transportation is developed and convenient.

　　The company is a modern enterprise integrating scientific and technological research and development, production and manufacturing, business and trade. There are more than 200 employees. There are 5 professors, 12 senior engineers, 28 junior and intermediate engineers with strong technical force. The manufacturing workshop covers an area of more than 16,000 square meters. There are more than 80 sets of various large and medium-sized processing equipment. The equipments of heat treatment, riveting and high-precision inspection are complete. Mainly engaged in various metallurgical equipment, lifting equipment, environmental protection equipment, general mechanical and electrical equipment. At present, the company has a number of patents, the main metallurgical products are cold shear, cold flying shear, cold bed, rolling mill series, finishing series, bar profile water cooling equipment, air cooling equipment, converter system equipment, automatic temperature and oxygen measuring device, all kinds of rollers. General equipment includes hoisting equipment, reducer and other professional products. The company's products have been widely used in metallurgy, chemical industry, lifting, transportation, mining, power and other fields. At present, it has provided cold shear products and technical services for many large and medium-sized well-known enterprises at home and abroad, and has received unanimous praise.