Development history of electric roller industry in China
China developed the first electric roller in May 1961, about ten years later than the development and development of belt conveyor in China, more than 30 years later than the birth of the first electric roller in the world, but since the mid-1970s, especially into the 1980s, some industries have introduced world-class JOKI and W.A.T electric roller, so that Electric roller has been developing rapidly in China. Entering the 1990s, through the digestion and absorption of imported technology and the independent research and development of industrial factories, China's electric roller has caught up with or exceeded the world's advanced level in both variety and specifications as well as in performance indicators.
Electric drum industry group is a member of "China Heavy Machinery Industry Association Belt Conveyor Professional Committee". The industry group was founded in 1978, and now has developed into 11 member factories, representing the level of production of electric drum industry organizations in China. The organization carries out regular activities every year, including technology exchange, information gathering, technology introduction, standard setting, etc. In the process of electric drum production technology catching up with the world advanced level, the industry group has played an active role, making the group member factory become the backbone of electric drum production in China.
China's electric roller industry factory has been able to produce a variety of electric roller varieties, all kinds of everything.
At present, the varieties can be divided by motor cooling mode: electric roller.
1, oil cooled electric roller: cooling oil does not directly contact with motor stator and rotor. Type TDY75 is the electric roller.
2, Shandi electric roller: cooling oil directly contacts with motor stator and rotor. The imported JOKI and W.A.T rollers are all electric rollers.
3, air-cooled electric roller: suck the cold air inside the drum, exhaust the hot air and cool the motor.
4, self cooling electric roller: do not take any cooling mode, motor natural cooling.
According to the deceleration device, the varieties currently available can be divided into:
1, two or three speed reducer cylindrical gear drive electric roller: power is generally 0.1-45KW
2, planetary cylinder gear drive electric roller: power range is generally 0.03-75KW
3. Electric roller with planetary cycloid drive: the maximum power can reach 55KW
4, electric drive shaft with variable transmission shaft breaking power: the power range is 0.03-30KW
5. The deceleration drum with the deceleration mechanism clamped inside the roller rib: the deceleration drum and the motor can be connected outward (as well as other powers), forming a new type of driving drum, the power can reach 160KW or greater, this kind of deceleration drum has the double advantages of the traditional open drive such as the electric drum.
At present, the electric rollers can be produced according to their requirements:
1, ordinary roller: suitable for ordinary working environment, including damp and muddy working environment.
2. Suitable for easy and explosive environments, it can be divided into two types: motor flameproof type and drum flameproof type.
3, backstop electric roller: the drum can only rotate in one direction.
4, double speed, two speed and continuously variable speed electric roller: double speed and three speed variable pole motor, stepless variable.
Special motor or speed reduction device is adopted.
5. Electromagnetic brake electric roller.
6, sprocket drum: there are single sprockets and double sprockets.
7. Other special purpose electric rollers: there are overheating protection rollers, rust corrosion resistant rollers and tapered rollers.
. The surface of the cylinder coated with glue or coating, as well as 220/380 volts, 380/660 volts, 50HZ/60HZ, variable pressure or variable frequency roller and so on.
According to the above three different types of drum, and then combined with each other, industry factory can produce 108 - 200 varieties of electric drum.
At present, the electric roller which can be produced by the electric roller industry can be divided into:
1. Power (KW): 0.03, 0.06, 0.09, 0.12, 0.18, 0.25, 0.37, 0.55, 075, 1.1, l.5, 2.2, 3.0, 4.0, 5.5, 7.5, 11, 15, 18.5, 22, 30, 37, 45, 55, 75, 90, 110, 16O or more
2, belt speed (M / s): 0.05,0.08, 0.10,0.13, 0.16,0.20,0. 25, 0.32, 0.40, 0.50, 0.60, 0.80, 1.00, 1.25, 1.60, 2.00, 2.50, 3.15, 4.0 or higher.
3, tube length (mm): 200250300350,... 2350, 2.400 (50mm per file)
4, diameter (mm): 60,90112132160200215250315400500630800100012501400.
Combining these basic parameters, electric drum factory can produce more than thousands of specifications of various types of electric drum, which is far beyond any factory in the world or even any country can produce specifications.
The electric roller produced by the factory has already caught up with the advanced level in the world in terms of its performance index. Some kinds of specifications even exceed the current world level, such as: can make noise less than 60 dB (A) of the electric roller; motor insulation level in B, F, H and even wet tropical use of electric roller; electric roller trouble-free working hours can reach more than 20,000 hours, sealing level of IP44, IP55 of the electric roller, These properties are comparable to those of foreign first-class products. Therefore, our country has been exporting small quantities from the age of ships to bulk export today. China's electric drum will change the pattern of the world's electric drum Market with the advantages of complete specifications, good performance and price.