According to the current industry background, based on the requirements of the national policy of energy saving, vertical grinding machines become the production grinding, however, the production of a variety of spiral bevel gear restrictions trend in the extended chain and dual input methods, such as motors, development of norms to 5 MW vertical grinder driving force. Thus, in addressing the multi-bypass uniform load, Prospect double planetary transmission, large-sized spiral bevel gear precision manufacturing technology, large vertical mill gear is very broad.

Vertical roller mill.jpg

Vertical roller mill

The following is a drive unit for a conventional vertical rolling mill technical parameters:

1. gears AGMA Service Factor exceeds 2.5, the design life is infinite life;

2. In addition to thrust bearings, all bearings, and bearing design life (L10) greater than 1 × 105 h time;

3. The bevel gear pair and Franklin root bell system, 17 crnimo6 quality low-carbon steel commonly used, carburizing, tooth hardness greater than HRC58 larger materials, precision of 6 (up to ISO1328) level.

4. The planetary gear pressure angle of 25 degrees, but also the use of 20 degrees, must be coordinated allocation of coincidence degree, the contact strength and flexural strength;

5. The sun and planet gear wheels are hardened carburizing, tooth hardness greater than HRC58 above, using a modified tooth and root shot technology, the precision is 6;

6. bevel gear pair and Franklin root bell system, 17 crnimo6 quality low-carbon steel commonly used, carburizing, tooth hardness greater than HRC58 larger materials, precision of 6 (up to ISO1328) level.

7. In order to ensure the safe operation of the product, the entire transmission system and lubrication system is equipped with a monitor, inlet and outlet parameters such as high-pressure pump oil pressure difference between the oil filter oil pipeline, oil inlet flow of oil out of the oil port , bearing temperature, vibration, continuous monitoring. Lubrication oil station and the main motor electronics chain, has established automatic alarm, continuous automatic shutdown protection measures. When monitoring point parameter values ​​deviate from the standard, the monitoring system will give an alarm or shut down the system, thus ensuring the safe and reliable operation of the machine.

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