JPS62161447A - Slab passage pass-line measuring instrument for continuous casting equipment - Google Patents

Abstract

PURPOSE:To measure pass-line for slab passage safely, rapidly and exactly by shifting a guide-liner of measuring box in the slab passage while abutting on roll surfaces. CONSTITUTION:In case of measuring the pass-line for the slab passage 14, the measuring box 22 is inserted at the position of the prescribed width as same as the passage center for its center from an opening part of a mold situated at the uppermost position of the slab passage 14. The measuring box is shifted in the slab passage 14, while detecting inclination of two rolls for the second roll group 12-2 under abutting on two rolls for the first roll group 12-1 of the pass-line side, to detect pass-line for each roll 12. Then, an inclination sensor 66 detects an inclined degree to the verticul direction by the guide-liner 33 brought into contact with two rolls of the first roll group 12-1 of the pass-line side. A distance sensor always detects a distance between an extension plane of the guide-liner surface abutting on the two rolls of the pass-line side and a surface of roll arranged at right under the two rolls.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a slab passage pass line measuring device for continuous casting equipment, and in particular, when the continuous casting equipment where the pass line is vertical is out of operation, a roll unit serving as a slab guide is used. For measuring the pass line of the slab passage of continuous casting equipment formed by slab guide rolls arranged in pairs, suitable for use when replacing or performing periodic inspections. Regarding vtrEl. [Prior Art] In continuous casting equipment, for example, if the pass line of the slab passage formed by vertically arranged pairs of slab guide rolls is disturbed beyond a permissible value, it will adversely affect the quality of the slab. , defects such as internal cracks, lateral cracks, notches, and center segregation occur in the slab, and the rolls in the disturbed area are subjected to a greater load than during normal operation, causing roll breakage and damage to the bearings. This may lead to construction suspension. Therefore, in order to prevent these problems, detailed accuracy control has been conventionally carried out for the pass line of the slab passage. That is, during operation, the pass line is measured when inserting the dummy bar using a measuring device attached to the RAD's towing tool, while during repair work when operation is stopped, as shown in Figure 12, the pass line is measured by the mulcher. 10 is located at the top of the operating line in a narrow (width 210-310mm) and tall (up to 30mm) slab passage 14 formed by slab guide rolls 12 arranged in pairs in the vertical direction. The distance between the piano wire 16 inserted through the opening of the upper mold 15 and vertically lowered into the slab passage 14 and the surface of each roll 12 on the pass line side is measured using a steel ruler or the like. [Problems to be Solved by the Invention] However, since the worker 10 has to work inside the narrow slab passage 14, he is unable to use his body freely and is highly fatigued. Particularly in the summer, due to the heat from the O-ru 12, the temperature is 50 to 40 degrees Celsius at the start of work, creating a very hot work environment. Furthermore, since the slab passage 14 is vertical, the opening has a very high overall height (approximately 30 m), and the work is carried out in a narrow space surrounded by the rolls 12.
Contains many unsafe elements. In addition, due to these poor working conditions and the working method of measuring the individual rolls 12 by entering the narrow slab passage 14, it is difficult to make measurements, etc. This leads to a deterioration in the quality of construction work and takes a lot of time to complete. As described above, the past line measurement work has been fraught with problems in terms of safety, construction quality, construction time, and worker health. [Purpose of ff] The present invention has been made to solve the above-mentioned conventional problems, and it is possible to safely, quickly and accurately measure the pass line of the slab passage in continuous casting equipment. According to 1, the purpose is to provide a line measuring device.

[Means to solve the problem]

The present invention relates to a device for measuring the pass line of a slab passage in continuous casting equipment formed by slab guide rolls arranged in pairs, in which the guide rollers are biased by an elastic body and positioned at the outer end. a measuring box having a liner, the guide liner moving in the slab passage while always coming into contact with at least two rolls of a pass line side roll group at intervals in the slab passage; By providing a sensor disposed in a measurement box that detects the inclination (1) of the guide liner and the distance between the surface of the roll located below the roll in contact with the guide liner and the quasi-position of the pass line W. , the above objective has been achieved.

[Effect]

The present invention has a guide liner that is biased by an elastic body and located on the outside when measuring a pass line of a slab passage of continuous VF production equipment formed by slab guide rolls arranged in pairs. The measuring box is configured such that the guide liner moves in the slab passage while always coming into contact with at least two rolls of the pass line side roll group at intervals in the slab passage. A sensor for detecting the inclination of the guide liner and the distance between the pass line reference position and the surface of the roll located below the roll in contact with the guide liner detects the inclination of the guide liner. and distance is detected. Therefore, it is possible to safely, quickly and accurately measure the pass line of the slab passage in continuous VI manufacturing equipment, which increases the safety and measurement accuracy of pass line measurement work, prevents measurement errors, and improves construction quality. Furthermore, it is possible to shorten the measurement time and maintain the worker's health D8.

【Example】

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a slab passage pass line measuring device for continuous casting equipment according to the present invention will be described in detail with reference to the drawings. In this embodiment, as shown in FIGS. 1 to 3, left and right boat-shaped boxes 22 each having one side open are connected by an upper connecting member 24 and a lower connecting member 26, and one side is similarly open. A measurement box in which left and right slightly narrow boat-shaped boxes 28 are connected by an upper connecting member 30 and a lower connecting member 32, and the left and right boat-shaped boxes 22 and 28 are integrated with their open surfaces facing each other. It is equipped with 20. The interval between the left and right master boxes is set to a predetermined value, for example, 1200 mm, in accordance with the niceness of the slab in order to simultaneously measure two predetermined positions in the width direction of the slab. Brackets 34, 36 (Fig. 3) protrude from four locations on the upper and lower sides of the mother box 22, 28, respectively, and a pantograph-shaped jack 38 and a jack 38 are provided between the two. Compression springs 42 are disposed to urge each of the two in the expansion direction. As a result, the mother mold boxes 22 and 28 are integrally connected in a state where they are biased in the direction of separating from each other. As shown in detail in FIG. 4, one end of the jack 38 is fixed to the bracket 34, and the other end has a bolt 46.
is fixed. The compression spring 42
The biasing force of the compression spring 42 can be adjusted by a nut 48 inserted into a bolt 46 via a bracket 36. The span of the jack 38 can also be adjusted by rotating an adjustment screw 50. As shown in detail in FIG. 5, guide frames 52 are disposed above and below inside the matrix box 22, and positions corresponding to the guide frames 52 inside the corresponding matrix box 28 are provided. A bearing frame 56 is disposed on which a small-diameter wheel 54 is rotatably supported. The wheels 54 are rotatable on the guide frame 52 so that the mother boxes 22 and 28 are smoothly separated from each other.
It is made accessible. As shown in FIG. 2, the upper connecting member 24A fixed to the right matrix box 22 and the upper connecting member 24A fixed to the left matrix box 22 are connected to the bin 58 at the center.
The upper part 3 is connected by and fixed to the right matrix box 22! I The bottle hole 60 of the VJ member 24A is
The hole is elongated in the vertical direction in FIG. On the other hand, the tip of the lower connecting member 26 fixed to the left matrix box 22 is connected by a bolt 62 and a nut 64 fixed to the right matrix box 22. Therefore, the left and right master boxes 22 can be slightly rotated about the bolts 62 within the range in which the pins 58 can move in the long hole direction of the bottle holes 60, and thereby the slab passages 14
Be guided smoothly. Note that it is also possible to directly connect the left and right mother mold boxes 22 with one connecting member each. The master box 22, 28 is provided with guide liners 33 made of wear-resistant material, which come into contact with the two rolls of the pass line roll group. Inside the Noah type box 22, there is a tilt sensor 66 that electrically detects the inclination of the guide liner 33 when it is not in the vertical direction. As shown in detail in FIG. 6, the surface of the roll 12G located directly below the two rolls 12A112G attached and in contact with the guide liner 33 is biased by the force of the compression spring 68.
A small diameter rotating body 7 made of wear-resistant material attached to the tip
A distance sensor 70 is provided that electrically detects the position of the surface of the roll 12C by smoothly moving the roll 12C while in contact with the roll 12C. Further, a rotatable hanger 72 is provided at the top of the mother mold box 22 and is attached at a predetermined distance from the center of gravity of the measurement box 20 in the roll direction on the pass line side. Further, a weight 74 is attached to the lower connecting member 26 to quickly move the measuring box 20 downward. As shown in detail in FIG. 7, the signal processing system in J3 of this embodiment includes a relay box 80 that relays the signals detected by the tilt sensor 66 and the distance sensor 70, and the relay box 80 and the signal processing device 84. A pass line is determined by processing the signals input from the cable connected to Vc and equipped with, for example, a snap ring type take-up reel 82, the tilt sensor 66, and the distance sensor 70 (ffi number processing device 84, It is composed of a CRT display 86 for displaying the processing results of the signal processing device 84, a printer 88, and a pen recorder 90.The operation of the embodiment will be explained below. As shown in Fig. 8, the measuring box 20 is pressed against a vertically installed reference gauge 92 to adjust the pass line leveling of the measuring device.Generally, as shown in Fig. 9, the vertical The roll group arranged in pairs is the 10th roll group on the pass line side.
- Rule group 12-1 and the 20th rule group 12- on the opposite pass line side
However, by moving the 20th rule group 12-2 relative to the 10th rule group while keeping the 10th rule group 12-1 fixed, the size of the slab thickness can be adjusted. The interval between corresponding slab passages 14 is adjusted. Therefore, when measuring the pass line of the vertical slab passage 14 during repair work after suspending operations, it is necessary to
Insert the measurement box 22 from the frontage of the mold 150 located at the top of the slab passage 14 at a position with a width of 200 inches,
While constantly contacting the two rolls of the 10th rule group 12-1 on the pass line side and detecting the inclination of the two rolls of the 20th rule fi'1'12-2, By moving the rollers, the path lines of the individual rolls 12 forming the slab passage 14 are detected. At this time, the tilt sensor 66
- The distance sensor 70 detects the inclination of the guide liner 33 that is in contact with the two rolls of the roll group 12-1 with respect to the vertical direction, and the distance sensor 70 changes its position with respect to the guide liner on the pass line side. Therefore, the extension surface of the guide liner surface that is always in contact with the two rolls on the pass line side, and the second
The distance between the roll directly below the roll and the surface is detected. These two sets of sensors sequentially measure the roll surface of the 10th rule group on the pass line side and the distance from the pass line measurement standard of the measurement reference roll (thereby measuring the pass line of the slab passage 14). The detection result is transmitted to the signal processing device 84 via the cable.The measurement is performed sequentially along the direction of the slab path 14 to the individual rolls in pairs. The pass line of the slab passage can be detected by simultaneously measuring two positions having a predetermined interval, for example 120 On, in the width direction of the slab passage.The detection results are based on the l^ standard of pass line measurement. In comparison, CR
T-display 86, printer 88 or pen recorder 90
displayed digitally or analogously. Furthermore, by counting the number of peak values of the output of the distance sensor 70, it is possible to digitally display the position of the measurement roll relative to the measurement reference roll. Note that in the above embodiment, the distance sensor 70 is connected to the rotating body 7.
Although the distance sensor 70 was described as having 0A, the configuration of the distance sensor 70 is not limited to this, and for example, a non-contact distance sensor may be used. Here, the meaning of the measured value detected by the sensor is as follows. That is, as shown in FIGS. 8, 10, and 11, when the distance measurement value Bx is equal to the reference value B0, for example, the 40th rule in the union roll is the same as the 40th rule in the dedicated roll. It can be determined that they are equal to the 20th and 30th pass lines. On the other hand, if the measured value aX is smaller than the reference value So, the 40th rule is the 20th rule and the 30th rule.
It can be seen that Bo-BX is located inside the pass line of -R. Here, Bo-Bx is P2 sin
If it is equal to θ, it can be seen that it is perpendicular to the 30th rule. On the other hand, when the measured value 11fiBX is larger than the reference value Bo, it can be seen that the 40th rule is located outside the pass line formed by the 20th rule and the 30th rule by 8X-Bo. Also, Bx −(B 0−P2 s
It can also be seen that it is shifted outward from the 30th-rule (7) 1 straight line by an amount of inθ>.

【Effect of the invention】

As explained above, according to the present invention, the guide liner of the measuring box is moved in the slab passage while coming into contact with the surfaces of the paired rolls for continuous VI forming, thereby safely, quickly and accurately. The pass line of the slab passage can be measured. Therefore, there is no need for workers to enter narrow slab passages, which not only greatly improves safety, but also reduces measurement time, improves measurement accuracy, and reduces worker fatigue.
It has excellent effects such as being able to maintain one's health.

[Brief explanation of drawings]

FIG. 1 is a side view showing the configuration of an embodiment of the slab passage pass line measuring device for continuous VC casting equipment according to the present invention, FIG. 2 is a front view, and FIG. 3 is a plan view, and FIG. Figure 4 is
An enlarged view of part ■ in Fig. 1, the fifth factor is a side view seen from the direction of arrow V in Fig. 2, and Fig. 6 is an enlarged view of VI-V in Fig. 2.
A sectional view taken along line I, FIG. 7 shows a block line section showing the signal processing system used in the embodiment, and FIG. FIG. 9 is a side view showing the state in which the pass line of the slab passage of the continuous casting machine is being measured using the above-mentioned embodiment, and FIGS. 10 and 11 are the above-mentioned embodiment. FIG. 12 is a side view illustrating the meaning of the measured values in FIG. 12. FIG. 12 is a side view showing a state in which the pass line of the slab passage is measured by a conventional method. 12... Slab guide roll, 14... Slab passage, 2o... Measurement box, 33... Guide liner, 42... Compression spring, 6G... Inclination sensor, 70... Distance sensor, 84...signal processing device;

Claims (1)

[Claims] (1) In a device for measuring the pass line of a slab passage in continuous casting equipment formed by slab guide rolls arranged in pairs, a guide liner located at the outer end is biased by an elastic body. a measurement box having a guide liner that moves within the slab passage while always abutting at least two rolls of a pass line side roll group with an interval between the slab passages; a sensor disposed in the box that detects the amount of inclination of the guide liner and the distance between the surface of the roll located below the roll in contact with the guide liner and the pass line reference position; Features: A slab passage pass line measurement device for continuous casting equipment.