The main reducer of the three-roll mill

By calculating and analyzing the additional force on the high-speed shaft of the main reducer of the three-roll mill, it is clarified that the additional stress generated during the operation of components such as the mill, shearing machine, and stamping machinery, which are equipped with flywheels, has a significant impact on the strength of the shaft and should not be ignored. Attention should be paid to this during design, maintenance, and repair.

The special gear reducer for the three-roll rolling mill of Jiangsu Jinxiang Reducer Co., Ltd. has been granted a national utility model patent. 

It is reported that among the three-roll rolling machines (also known as Y-type rolling machines) currently used in the metallurgical industry in China, most adopt the three-roll rolling machine type with only one transmission shaft. A few enterprises have introduced foreign equipment and adopted three independent units to drive the rolls. This transmission structure is gradually becoming widespread and is in high demand. However, the transmission shafts of the imported equipment adopt a hollow split structure, and the telescopic part has no positioning support at both ends, which easily causes the front coupling to sag; the impact during connection is likely to damage the equipment; the structure of this reduction box is complex, and adjustment and maintenance are inconvenient. Jiangsu Jinxiang's utility model patent is a special gear reduction box for three-roll rolling machines. Its advantages are that the transmission shaft uses a spline as a moving pair, which can rotate and also move axially; the reset spring is installed in the hollow output shaft and has sufficient preload, which can ensure that the transmission shaft can automatically reset after the hydraulic cylinder retracts and releases pressure. This product is easy to manufacture, install and maintain, and can achieve rapid replacement of the frame and free rolling within a certain specification range, thereby ensuring that the rolling machine operates without faults. This reduction box can be used in hot continuous rolling machines, cold continuous rolling machines, reducing diameter machines, sizing machines, and precision sizing machines, and has broad application prospects.