Roller radial adjusting mechanism of cross beam type four-roller profile rolling mill

Abstract

The invention discloses a roller radial adjusting mechanism of a cross beam type four-roller profile rolling mill, and belongs to the technical field of four-roller profile rolling mills. The mechanism comprises a frame, housing screws, a bevel gear transmission mechanism, rollers and bearing seats. The mechanism is characterized in that the housing screws are respectively arranged in the middle of four rims of the frame and connected with cross beams through threads; the four cross beams are 'U'-shaped, a transverse beam is positioned on the upper part, left and right side legs are positioned on two sides, a threaded hole is formed in the middle of the transverse beam, a dovetail block is made at the lower end of each of the two side legs, the lower part of one side leg is provided with a core shaft hole, and only the left and right side legs of the narrow leg type cross beams are narrow, so that the narrow leg type cross beams can be inserted into holes in the wide leg type cross beams; the upper and lower side legs of the narrow leg type cross beams are inserted into the holes in the two side legs of the wide leg type cross beams; and four rollers are respectively arranged on four core shafts, one end of each core shaft is supported in the core shaft hole of each side leg, a transmission bevel gear is arranged at the other end of each core shaft, and the bearing seats for installing the core shafts are matched with dovetail grooves in the cross beams through the dovetail blocks at the lower ends. The mechanism can realize radial adjustment of the rollers.

Description

technical field [0001] The invention belongs to the technical field of four-high profile rolling mills, and in particular relates to a roll radial adjustment device of a cross-beam type four-high rolling mill. Background technique [0002] The cavity surrounded by the four rolls of the currently used four-roll profile mill is fixed, that is, the radial direction of the rolls is fixed, and generally no radial adjustment is performed, which will cause the cavity to be damaged when the roll surface is worn. It will become larger, resulting in a larger size of the rolled material. When the radial adjustment of the rolls is required, it is often achieved by separate transmission of the rolls. However, the machine structure of the separate transmission of the rolls is particularly complex and huge, and the rolls are centralized and unified. The transmission machine has a simple structure and small size, and can ensure consistent roll speed and save investment, but the use of centr...

AI Technical Summary

Problems solved by technology

However, its mechanism needs to install a special balance mechanism, and it needs to be equipped with a combined gearbox, resulting in increased investment costs

At the same time, it is easy to generate vibration when the load changes, resulting in unstable operation of the mechanism

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