Roll-to-roll distance measuring device

Abstract

A roll-to-roll distance measuring device comprises a sensor device for measuring the distance between at least a pair of rolls disposed oppositely to each other on both sides of a cast piece passage in a continuous casting machine.  The sensor device comprises a movable sensor head having a cylindrical body part, a head part which is arranged continuously with the upper end of the body part in a conical shape and the top of which is convexed toward the upper roll among the pair of rolls; and a cylindrical sensor housing for storing the sensor head.  A reception part serving as a space for receiving foreign matters is formed between the bottom end outer peripheral surface of the head part and the upper end inner peripheral surface of the sensor housing when the bottom end of the head part is intruded into the sensor housing.  The bottom part of the reception part is formed in an annular flat surface in the top plan view thereof.

Description

technical field [0001] The present invention relates to a roll gap measuring device for measuring the gap between roll pairs of a continuous casting machine. [0002] This application claims priority based on Japanese Patent Application No. 2008-130461 for which it applied in Japan on May 19, 2008, and uses the content here. Background technique [0003] The continuous casting machine includes a plurality of roll pairs (guide rolls) arranged along the slab passage. The slab passes through the slab passage while being guided by these roller pairs. However, if an abnormality occurs in the gap between the pair of rolls, there is a possibility of bringing about quality degradation such as center segregation and internal fracture of the cast slab. Therefore, it is important to properly maintain the distance between the roller pairs, and for this reason, conventionally, the distance between the roller pairs has been measured. [0004] In the roll gap measurement of the continuo...

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Problems solved by technology

However, in this case, the vertical motion of the head 103b becomes small, so it is difficult to grasp the peak value of the displacement amount that can be detected by the head 103b, and the problem of lowering the measurement accuracy occurs.

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