Weigao transmission contracted Baosteel coking workshop reducer

The annual steel production capacity of China Baowu Iron and Steel Group Co., Ltd. is about 30 million tons, and its profitability ranks in the leading position in the world.Its products sell well in domestic and foreign markets.On December 14, 2006, Standard & Poor's announced that the long-term credit ratings of Baosteel Group and Baosteel Co., Ltd. will be upgraded from 'BBB +' to 'A-'.At present, this is the highest long-term credit rating among global steel companies and the highest credit rating among Chinese manufacturing companies.

Among global steel companies, only Baosteel and South Korea's POSCO can obtain 'A-'.Among the six Chinese companies that have obtained 'A-' and above credit ratings, Baosteel is the only manufacturing company, and continues to maintain its leading position among outstanding domestic companies.Baosteel is the most competitive steel group in China, and it is also the global partner and general steel supplier of the 2010 Shanghai World Expo.In 2009, Baosteel's total operating income was 195.3 billion yuan, its total profit was 14.9 billion yuan, its total assets were 402 billion yuan, and its net assets were 243 billion yuan.The total number of Baosteel employees is 106,914; In 2010, Baosteel was selected as the world's top 500 enterprises by 'Fortune' magazine for the seventh consecutive year, ranking 276th, and in 2009 was named 'World's Most Respected Enterprise', becoming China's The only company in the mainland to receive this title..

In 2009, Baosteel produced 38.87 million tons of steel products, ranking third among global steel companies.The Baosteel brand ranked 12th in the 2010 'Top 500 Chinese Brands' compiled by the World Brand Value Laboratory, with a brand value of 76.512 billion yuan.

The reducer is a commonly used power transmission mechanism.The reduction mechanism reduces the higher speed to the required speed and obtains a larger torque.Among the mechanisms currently used to transmit power and motion, reducers are used in a wide range of applications.It can be seen in almost all types of mechanical transmission systems from ships, automobiles, locomotives, heavy machinery for construction, processing machinery and automatic production equipment used in the machinery industry to ordinary daily life household appliances, clocks and watches..Its applications range from high power transmission work to light load and precise angle transmission.You can see the application of the reducer.In industrial applications, reducers have the function of reducing speed and increasing torque.Therefore, it is widely used in speed and torque conversion equipment.

The main functions of the reducer are:

(1) Reduce the speed and increase the output torque at the same time.The torque output ratio is the output of the motor multiplied by the reduction ratio, but care must be taken not to exceed the rated torque of the reducer.

(2) Deceleration reduces the inertia of the load at the same time, and the reduction of inertia is the square of the reduction ratio.

The common reducer types are: gear reducer, worm gear reducer, cycloid reducer, planetary gear reducer, stepless reducer, etc.

Reducers are widely used in steel production enterprises.At the same time, due to the relatively harsh use environment, problems such as wear of the bearing position in the bearing cavity and oil leakage on the joint surface of the reducer appear from time to time during operation.Due to the high automation and continuity of modern steel production, once the above problems occur, if there is no advanced maintenance method, it will inevitably waste manpower and financial resources, and even the entire production line will stop production, resulting in considerable economic benefits.loss.

Case 1: Wear of 650-ton cold shear bearing box

The bearing chamber of the cold shear reducer is worn.After the problem occurs, traditional methods cannot solve it on the spot.Repairs must be outsourced.It takes a long time to stop production and wastes the company's precious production time.And, metal is used for repairing metal, and this can not change ' difficult to difficult ' coordination relation.Under the combined action of various forces, it will still cause wear and tear.

Fushilan 2211F polymer composite material has super strong adhesion, excellent compressive strength and other comprehensive properties.The use of 2211F polymer composite can avoid disassembly and machining, and quickly and effectively repair the wear of the bearing cavity.That is, there is no thermal stress of repair welding, and the repair thickness is not limited.At the same time, the product has functions that metal materials do not have, which can absorb the shock and vibration of the equipment and avoid the possibility of re-wear.

Case 2: Leakage on the surface of the reducing pipe joint

In the long-term operation of the reducer, due to vibration, wear, pressure, temperature and repeated disassembly and assembly, oil leakage at the static seal of each joint surface is very common, resulting in a large amount of oil waste and affecting the place of enterprise management .The traditional treatment method is to disassemble and open the reducer, replace the gasket or apply sealant, which is time-consuming and laborious, and it is difficult to ensure the sealing effect, and leakage will occur again during operation.

Use Fuschlan, Fuschlan 25551 fast-curing repair agent and Fuschlan 3223 high-strength modified polyurethane rubber composite materials and technology for on-site spill treatment without disassembly, use polymer composite materials to treat spills from the outside, save time and effort, and the effect is immediate .Its products have excellent adhesion, oil resistance and 350% elongation, overcome the influence of reducer vibration, and solve problems that have not been solved for many years.

DBY two-stage transmission conical cylindrical gear reducer

Conical helical gear reducers (hereinafter referred to as reducers) are used in transmissions in which the input shaft and output shaft are arranged in the vertical direction.Mainly used in belt conveyors and various transportation machinery, also used in the transmission mechanism of various general machinery, such as coal, metallurgy, mining, chemical industry, building materials, light industry, petroleum, etc.

Model:

DBY160, DBY180, DBY200, DBY224, DBY250, DBY280, DBY315, DBY355, DBY400, DBY450, DBY500, DBY560

Speed ​​ratio 8, 10, 11.2, 12.5, 14

1. The use, performance characteristics and model marking of the reducer

1.1 Purpose

Conical helical gear reducers (hereinafter referred to as reducers) are used in transmissions in which the input shaft and output shaft are arranged in the vertical direction.Mainly used in belt conveyors and various transportation machinery, also used in the transmission mechanism of various general machinery, such as coal, metallurgy, mining, chemical industry, building materials, light industry, petroleum, etc.

1.2 Performance characteristics

High load capacity, low noise, small size, light weight, high efficiency and long service life.

1.3 Parameter range

DBY, DBYK and DBZ reducers each have 12 specifications, and the nominal center distances are: 160, 180, 200, 224, 250, 280, 315, 355, 400, 450, 500, 560 mm.There are 5 transfers per specification.Compared with (8, 10, 11.2, 12.5, 14) two rotation directions and four assembly types, 240 kinds of reducers are formed respectively.

There are 15 specifications of DCY, DCYK and DCZ reducers.The nominal center distance is: 160, 180, 200, 224, 250, 280, 315, 355, 400, 450, 500, 560, 630, 710, 800mm; each specification has 11 transmission ratios (16, 18, 20, 22.4, 25, 28, 31.5, 35.5, 40, 45, 50), two directions of rotation, four assembly types and 660 kinds of reducers.

This series of reducers can meet the power requirements of TD and DX belt conveyors and other transport machinery within the working range of belt speed 0.8-6.5m/s.

1.4 Structure

Lubrication of the reducer: Usually, the gears and bearings of the reducer are lubricated by the splashed oil pool and cooled naturally.Only when the working balance temperature of the reducer exceeds the specified value or the carrying power exceeds the firepower PG1, the oil pool with cooling pipe is used for lubrication.

1.5 Model and marking

The model of the reducer is composed of model code, nominal center distance a (center distance of the final stage), nominal transmission ratio, component model code and input shaft rotation direction code.

D is the group code of the belt conveyor, B is two-stage transmission, C is three-stage transmission, Y is hard tooth surface, Z is medium hard tooth surface, and K output shaft is a hollow shaft.

Nominal center distance: represented by actual numbers, in millimeters

Transmission ratio: expressed by the nominal transmission ratio.

Assembly type: Indicated by Roman numerals I, II, III, IV.

The direction of rotation of the input shaft: When looking at the direction of the input shaft, S is clockwise and N is counterclockwise.

Markup example:

The nominal center distance is 280mm, the nominal transmission ratio is 10, the component type is Type III, and the input shaft rotates clockwise.The sign of the three-stage transmission reducer is: reducer DBY280-10-III S