CN210816729U

CN210816729U - Safe and efficient tool for calibrating roll gap of hot-rolling vertical roll

Info

Publication number: CN210816729U
Application number: CN201921481827.3U
Authority: CN
Inventors: 贺亮; 王存; 王杰; 李江委; 刘旺臣; 宋运涛; 刘金超
Original assignee: Angang Steel Co Ltd
Current assignee: Angang Steel Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-06-23
Anticipated expiration: 2029-09-06

Abstract

The utility model provides a safe efficient marks instrument of hot rolling edger roll gap, instrument include support I, support II, upper beam, extension arm, scale, support I and support II are fixed in the both sides of upper beam, and nose width phase-match on width and the edger roll between support I and the support II, extension arm and II fixed connection of support be fixed with the scale on the extension arm, the scale remains apart from H with support II. Compared with the prior art, the beneficial effects of the utility model are that: a safe and efficient tool and method for calibrating a roll gap of a hot-rolling vertical roll improve calibration precision, ensure product width precision and prevent accidents such as vertical roll bulging, power jumping and the like; the safety factor of operators is improved; shorten calibration time and improve production efficiency.

Description

Safe and efficient tool for calibrating roll gap of hot-rolling vertical roll

Technical Field

The utility model relates to a steel rolling process field especially relates to a safe efficient marks instrument of hot rolling edger roll gap.

Background

At present, the width precision of a hot-rolled strip steel product is mainly controlled by a rough rolling vertical roll, and the height of the vertical roll precision is limited by the calibration precision of a roll gap. Generally, after a rough rolling vertical roll is replaced, an operator enters a vertical rolling mill, a steel plate ruler is used for measuring the distance from the roll surface of the vertical roll to the lower nose bridge, and due to the fact that the fall in the vertical rolling mill is large, the calibration space is narrow, the two sides of the lower nose bridge are seriously abraded, the vertical roll is poor in centering performance, the calibration error is large, and the calibration time is long. In terms of safety, the calibration space is narrow, and the difference between the calibration position and the trench is large, so that the safety is poor; during production, firstly, the influence on equipment operation is large, the load of the vertical roll is increased due to poor calibration precision, and accidents such as power jump, roll breakage and the like are easy to occur; secondly, the influence on the product quality is large, the quality defects of the finished product such as wide whole roll, wide width, narrow width and the like easily occur, the steel is changed or the spot goods is judged, even the waste is judged, and the huge loss is caused to the production quality, the yield and the equipment cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safe and efficient tool for calibrating the roll gap of the hot rolling vertical roll, which improves the calibration precision, ensures the width precision of the product, and prevents accidents such as the extrusion and bulging of the vertical roll, the electricity jump and the like; the safety factor of operators is improved; shorten calibration time and improve production efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a safe efficient marks instrument of hot rolling edger roll gap, includes support I, support II, upper beam, extension arm, scale, support I and support II are fixed in the both sides of upper beam, and nose width phase-match on width and the edger roll between support I and the support II, extension arm and II fixed connection of support be fixed with the scale on the extension arm, the scale remains apart from H with support II.

And a support frame is also fixed between the bottom of the extension arm and the support II.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the utility model greatly improves the safety factor of the operator when calibrating the vertical roll, and eliminates the potential personal safety hazard;

2) the operator only needs to measure above the vertical roll during calibration, so that the operator is prevented from entering the rolling mill for measurement, and the calibration time is shortened from the original 30 minutes to 10 minutes;

3) the utility model discloses both markd the edger roll gap, marked the centering of edger roll again. Through repeated demonstration and field inspection, the calibration precision is improved to +/-3 mm from the original +/-5 mm, the centering precision of the vertical roll is improved to +/-2 mm from the original +/-6 mm, the width precision of the strip steel is greatly improved, and various accidents caused by poor calibration precision and accidents such as large middle blank lateral bending, guide ruler clamping and the like caused by poor centering are avoided.

Drawings

FIG. 1 is a schematic structural view of the tool for calibrating the roll gap of the hot rolling vertical roll of the present invention.

Fig. 2 is a schematic view of the vertical roll measurement of the present invention.

In the figure: 1-scale, 2-extension arm, 3-support frame, 4-upper beam, 5-support frame I, 6-support frame II, 7-steel plate ruler, 8-vertical roll center line mark, 9-vertical roll upper bearing box, 10-vertical roll, 11-vertical roll lower bearing box and 12-vertical roll upper nose bridge.

Detailed Description

The following further describes the embodiments of the present invention:

see fig. 1, a safe efficient instrument of demarcation hot rolling edger roll gap, including support I5, support II 6, upper beam 4, extension arm 2, scale 1, support I5 and support II 6 are fixed in the both sides of upper beam 4, and width R between support I5 and the support II 6 and the nose bridge width phase-match on the edger roll, extension arm 2 and support II 6 fixed connection are fixed with scale 1 on extension arm 2, the scale keeps apart from H with support II.

The H value is determined according to the following principle: 1) the vertical roller bearing box does not interfere with the tool during measurement; 2) the suspended part of the steel plate ruler is not bent during measurement. To improve the measurement accuracy, the length of the distance H may be determined according to actual conditions, for example: the distance between the vertical roll and the nose bridge on the vertical roll is about 2 meters, the distance H can be designed to be about 1.5 meters, and the residual measurement is measured by a steel plate ruler, so that the measurement error can be reduced.

And a support frame 3 is also fixed between the bottom of the extension arm 2 and the bracket II 6.

As shown in FIG. 2, a method for calibrating roll gap by using a safe and efficient tool for calibrating roll gap of hot-rolled vertical rolls comprises the following steps:

1) in order to improve the safety of operators during measurement, measurement is carried out on a rolling mill. Firstly, the nose bridge 12 on the vertical roll is in a fixed position when being arranged on the stand roll housing and is positioned on a rolling central line, so that the center of the nose bridge 12 on the vertical roll is taken as the rolling central line; secondly, finding the center position of the vertical roll on a bearing box 9 on the vertical roll and engraving a center line mark 8 of the vertical roll on the bearing box 9 on the vertical roll; finally, a measurer clamps a fixing frame formed by the support I5, the support II 6 and the upper beam 4 on a nose bridge 12 on the vertical roll, then puts a steel plate ruler 7 or a tape measure on the extension arm 2, and measures the distance from the ruler 1 to a mark 8 of the central line of the vertical roll on a bearing box 9 on the vertical roll, wherein the distance is a measured value L of the single-side vertical roll;

2) establishing formula (1) in a primary program, and calculating a roll gap value △ S of the single-side vertical roll:

△S＝H+b/2-D/2+L； (1)

in the formula: b, the width of a nose bridge on the vertical roll;

d-diameter of vertical roll;

3) because H, the width of the nose bridge 12 on the vertical roll and the diameter of the vertical roll 10 are fixed values, an operator only needs to input a measured value L into a dialog box of the corresponding vertical roll in a primary picture, after the roll gap value △ S of the calculated bilateral vertical rolls is calibrated, the distances from the vertical rolls on two sides to the central line are respectively measured, whether the central line of the vertical rolls on two sides coincides with the rolling central line after calibration is verified, and the practice verifies that the centering precision of the vertical rolls is basically within +/-2 mm after the roll gap calibration is carried out.

The utility model discloses a roll gap calibration tool and calibration method shifts the rolling mill upper end in by the rolling mill with the calibration position, has improved calibration personnel's factor of safety.

The utility model discloses the roll gap calibration tool passes through fixed frame card on nose bridge 12 on the edger roll to guarantee fixed frame centre gripping nose bridge 12 on the edger roll, prevent the drunkenness.

Extension arm 2 is divided into two sections at scale 1 punishment, and the nose bridge 12 one side is fixed distance H on being close to the edger roll, and the purpose reduces measuring length, and unsettled distance is longer when preventing tape measure or steel plate chi 7 from measuring, can not keep the level, produces great error.

The extension arm 2 close to the vertical roller side ensures that the steel plate ruler or the tape measure is kept horizontal during measurement.

The support frame 3 is used for preventing the extension arm 2 from being too long and bending to influence the measurement precision.

Claims

1. The utility model provides a safe efficient marks instrument of hot rolling edger roll gap, its characterized in that, includes support I, support II, upper beam, extension arm, scale, support I and support II are fixed in the both sides of upper beam, and nose roof beam width phase-match on width and the edger roll between support I and the support II, extension arm and II fixed connection of support be fixed with the scale on the extension arm, the scale remains apart from H with support II.

2. The tool for calibrating the roll gap of the hot-rolled vertical roll safely and efficiently as claimed in claim 1, wherein a support frame is further fixed between the bottom of the extension arm and the support II.