Method for measuring gap between bearings of roll shafts of pinch rolls

Abstract

The invention relates to a method for measuring a gap between bearings of roll shafts of punch rolls, which comprises the following steps: 1) vertically taking up a measuring connecting rod, and leading the upper part and the lower part of the measuring connecting rod to be connected with the shaft ends of the upper roll shaft and the lower roll shaft; 2) screwing the top end of the connecting rod into a measuring connecting bolt; 3) inserting one end of a pointer type torque wrench into the measuring connecting bolt; and placing dial indicators on the upper roll shaft and the lower roll shaft; 4) pulling the pointer type torque wrench to the right side by using the hand, and respectively recording values on the dial indicators when the pointer scale value on the pointer type torque wrench achieves the set value, wherein the value measured by the lower roll shaft is the gap between the bearings produced during the action of the left side; 5) pulling the pointer type torque wrench to the left side, and measuring the values of the dial indicators; and 6) adding the values measured by the upper roll shaft and the lower roll shaft during the two actions, and obtaining the accurate actual gap value between the bearings of the upper roll shaft and the lower roll shaft. The method can ensure the precision of the measured value at each time and improve the working efficiency of the measurement by quantifying the control during the measurement process, that is carrying out constant operation on the torque applied during the measurement and carrying out fixed point control on force application points.

Description

technical field [0001] The invention relates to detection and measurement technology, in particular to a method for measuring the clearance of pinch roller roller shaft bearings. Background technique [0002] The pinch roll transmission box, one of the key equipment on the high-speed main rolling line, is used to participate in the clamping of the rolled piece and to provide a constant tension, reduce the jitter of the rolled piece during rolling, and give the rolling A power is added to the piece, and the rolled piece is sent to the laying machine. [0003] The pinch roller shaft is designed to install a pair of angular contact ball bearings at the shaft end to control the axial force, and the oil film bearing in the middle of the roller shaft to bear the radial force, and the working status and gap size of the oil film bearing and rolling bearing are directly related to the pinch roller of normal operation. Therefore, the maintenance standard stipulates that the axial cl...

AI Technical Summary

Problems solved by technology

Since the measurement method of the original pinch roller bearing gap did not meet the last two of the four measurement elements, it resulted in large deviations in each measurement data and could not truly reflect the actual deterioration trend of the roller bearings and oil film bearings. Seriously affected the correct judgment of the working state of the bearing

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