JPS5824723B2 - Spacing measuring device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a distance measuring device suitable for measuring the distance between heated rolling rollers in a steel mill, for example, from a distance.

When continuously casting steel plates at a steelworks, molten steel is formed into a roughly plate shape at a gate, and the red-hot steel plate is successively passed between rolling rollers at a predetermined interval, during which it is subjected to water injection cooling rolling treatment. It is made to a predetermined thickness.

The roller itself is also heated.

In this case, a steel plate of desired thickness can be obtained by setting accurate roller spacing, and the present invention provides such a device suitable for measuring the roller spacing.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, with reference to the drawings, a case will be described in which an embodiment of the present invention is applied to the above-mentioned continuous casting apparatus for steel plates.

In Figure 1, 1 is the injection port for molten steel (hot water), 2
'Rto' is a hollow connecting part which is provided following the sprue 1 and is used to form the molten steel into a plate shape while being cooled.

CRlolt R102, R103''・:] indicates a large number of rollers on one side arranged in a predetermined arc shape from the lower opening 2a of the connecting part 2, and this roller R100 is successively rolled as shown in the figure. The diameter is thick.

A specific interval d corresponding to the rolling thickness of the steel plate is provided on the inner side of the arc corresponding to roller R100 (see Fig. 3), and other rolling rollers R200CR201p R202+ R2O3
...' ) are provided.

The molten steel is made into a substantially plate-shaped red-hot body at the sprue 1 and the connecting part 2,
This incandescent body is cooled by water injection and rolled between R100 and R200, which are the objects to be measured on both sides, and is formed to the desired thickness at the end as described above, and this work is performed continuously. Steel plates of desired thickness can be obtained continuously.

In this case, as is clear from the above, the rollers R100 and R200 also become high in temperature, and appropriate water injection cooling is performed, resulting in high temperature and humidity in the workplace.

Further, a drawing dummy (not shown) is connected to the tip of the molten steel via its head 4, so that long steel plates are sequentially drawn out from between the rollers.

Since the dummy device provided for this drawer is not directly related to the present invention, detailed explanation thereof will be omitted.

In such a steel plate manufacturing apparatus, the above-mentioned specific interval d can be changed, for example, when obtaining a steel plate with a different thickness.

That is, although the force rollers Tttoo or R200 are moved through a moving means (not shown) to contract or widen them, it is possible to accurately check whether the distance after this movement is exactly as desired. It is not easy to carry out this process, especially in high temperature and high humidity conditions, with a large number of heated roller spacings.

The present invention aims to provide a measuring device suitable for measurement in such cases, and will be described below with reference to the drawings.

In the present invention, a pair of detection levers 13 are provided, one end of which is fixed to the base, that is, the yoke 11, and a measuring element 14 [114a and 14b] that contacts the rollers R100 and R2oo, respectively, is added to the other end. , these pair of detection levers 13 are arranged almost parallel to each other, and the detection levers 13 are connected to a pair of parallel plate springs, that is, elastic plates 1, respectively.
3a and 13b.

Note that 17 is a spring (hereinafter referred to as other biasing means) that biases the pair of probes 14a and 14b in a direction to separate them from each other.

These devices will be referred to as biasing means A.

Further, in the present invention, the contact surface 21 of the pair of rollers R1oO and R200 of the measuring stylus 14a and 14b is formed into a spherical surface whose diameter is a specific distance d required by the distance between these rollers R100 and R200. Furthermore, a converter 40 is provided which converts the amount of displacement between the pair of probes 14a and 14b described above into an electrical signal.

The above description will be explained in more detail with reference to the drawings.

5 is a handle device, which is arranged horizontally as shown in Fig. 4;
Both elastic support plates 7C7a, 7b) parallel to the insertion force direction of the measuring means 3, which will be described in detail below, a mounting block 8 that connects one end of the support plate 7 to the dummy head 4, and a It consists of a pipe-shaped support rod 10 fixed to the other end so as to be perpendicular to each other via a fastening fitting 9, and a yoke 11 fitted and fixed to this support rod 10.
for.

Both arms 12 [12a] are formed to protrude in a vertical relationship.

12b] (see Figure 5).

Then, one end of the parallel springs of the biasing means A, that is, the elastic plates 13 [13a, 13b] are respectively screwed onto both arms 12 to form a pair, and the measuring element/stage 3 is attached to the other end from the support rod 10 as shown by the arrow. They are arranged and installed so that they extend in the a direction.

Next, the measuring means 3 will be described with reference to FIGS. 4, two contact points 14a, 14b and the contact point 14 are provided through additional parallel springs 13, respectively, as shown in FIG.
a and 14b, and a connecting block 15 that attaches the parallel springs 13 to the parallel springs 13, respectively.

Then, both the probes 14a and 14b are moved in the measuring force direction (arrow aL).
Another biasing means 17 that biases the blades so as to spread them in the upper and lower blade directions perpendicular to the plane is interlocked with the other biasing means 17.

In FIGS. 5 and 8, the measuring points 14a and 14b are made up of a thick plate-like measuring point main body 20 and a protrusion 23 integrally formed to protrude from the main body 20 and having an outer surface serving as a measuring surface 21. This measuring surface 21 is formed in a spherical shape with a diameter approximately equal to the specific interval d, and both measuring stylus 1 are formed with this measuring surface 21 as the outside.
4a and 14b are placed along the measurement force direction (up and down)
(See Figure 5).

Furthermore, in FIGS. 5 and 8, the measuring head main body 20 has a side plate 23 formed from an elastic plate by bending a curved wing 23a having approximately the same spherical surface as the measuring surface 21 at one end.
and are arranged and screwed so as to extend in a row on both the front and rear sides of the protrusion 22 (see FIG. 5).

Next, to describe the connecting block 15, in FIG. 8, there is a hollow spacer 24 (see FIG. 5) sandwiched between the other ends of the elastic plates 13a and 13b, and an elastic plate 13b inside the spacer 24 (see FIG. 5).
It also consists of an inner retaining plate 25 and an outer retaining plate 26, each of which is attached to the outer side by sandwiching the elastic plate 13a, and the outer retaining plate 2
6. The elastic plate 13b, the spacer 24, the elastic plate 13a, and the inner holding plate 25 are screwed together to form a block shape as shown in FIG. 20 is screwed on.

In this way, the measuring elements 14a and 14b are attached to the mounting yoke 11 through their respective elastic plates 13, and thus to the support rod 10, so that they can be freely displaced in the vertical direction with their respective measuring surfaces 21 outside (Fig. 5). reference).

Another biasing means 11 shown in FIGS. 5 to 8 includes coil biasing springs 27 and 28 arranged parallel to each other in the upper and lower blade directions, and upper and lower levers 31 that are biased by engaging at one end thereof. .32 (see Figures 7 and 8).

The upper lever 31 has an upper end screwed onto the front side surface of the spacer 24 (see FIGS. 5 and 8), and an engagement plate 33 along the lateral direction perpendicular to arrow a is screwed onto the lower end. The lower ends of the above-mentioned springs 27 and 28 are respectively engaged with the retaining holes 29 at both ends (see Fig. 8), and the bent portions 34 are bent to extend from the lower ends in the direction of arrow a. have,
An adjustment screw rod 35 passing vertically through the bent portion 34 is screwed together.

In FIG. 7, the lower lever 32 has its lower end screwed onto the front surface of the lower spacer 24 (see FIG. 5), and has a forked engagement plate 37 at its curved upper end. Engagement holes 30, 3 at the tips of the engagement plates 37 are screwed and bent in the opposite direction of the arrow a to sandwich the lever 31.
The upper ends of the springs 27 and 28 are engaged with the springs 27 and 28, respectively.
(See Figure 5).

Further, the lever 32 is provided with a window 38 that penetrates in the direction of arrow a, and a stopper 39 that projects downwardly within the window 38 is provided.
(see Figure 5).

In FIG. 5, another biasing means 17 is disposed in front of the measuring means 3, and the bent portion 34 of the lever 31 is placed in the window 38.
Facing inside, the inner end of the adjusting screw rod 35 is arranged to face the stopper 39 in a vertical relationship, and the springs 27 and 28 are connected to the lever 31.
, 32 to measure between the upper and lower probes 14a and 14b (
It is configured such that they are always spaced apart in the vertical direction.

Next, the transducer 40 will be described with reference to FIG. 5. The transducer 40 has a cylindrical transducer main body 40a, is biased within the main body 40a and is movable coaxially, and has an armature 47. (details are not shown), and the transducer 40 is placed between the elastic plates 13 and 13, and furthermore, the transducer 40 is arranged between the elastic plates 13 and 13, and the upper and lower sides are arranged parallel to the direction of the arrow a within the elastic plates 13 and 13. Arm 41 Lower arm 4 of C41a, 41b)
A main body 40a is attached to the armature 1b, and the upper end of the armature 47 is biased and always in contact with the upper arm 41a at a position proportional to the length of the arm 41a.

In FIG. 5, this cross spring 44 is composed of three leaf springs 42C42a, 42b) 43 that are perpendicular to each other, and are arranged so that they do not intersect with each other.

The leaf spring 42 connects one end of both arms 41 to the yoke 11.
and the mounting brackets 48 attached to the leaf springs 4
3 is screwed into the mounting bracket 48 at its center, and screwed into one end of both arms 41 at both ends.

Both arms 41 have a steel ball 45 and a spacer 24 at the other end.
One end of a biased coil spring 46 (see FIG. 5) is attached to the spring 46, and one end is supported by a cross spring 44, and the other end is elastically opposed to the inner holding plate 25 at all times, and The amount of variation is proportionally distributed and transmitted to the armature 47 mechanically.

In FIGS. 4, 6, and 9, the guide means 6 consists of a pair of bridge plates 52, 52 facing each other, and the bridge plates 52, 52 are vertically arranged so as to sandwich the probe 14 therebetween. However, arrow a
The guide means 6 is arranged along the direction of the support rod 10 and has curved portions 51 curved inwardly at both ends in the longitudinal direction, and the guide means 6 thus formed are attached to both ends of the support rod 10 as shown.

To explain this in more detail, in FIGS. 4 and 9, a mounting plate 53 having a cross-sectional shape is screwed onto the end face of the yoke 11, and a small spring plate is attached to the bent portion 53a projecting to the outside. A bent portion 54a formed by bending 54 to open downward.
are screwed together, so that both ends of the small spring plate 54 slide elastically against the inner surface of a middle plate spring 55 which is superimposed on the inner surface of the bridge plate 52 and is attached to the ground (Fig. 4). reference).

In addition, a lower support plate spring 56 is integrally attached to the bent portion 54a of the small spring plate 54, and is bent to open upward in a manner corresponding to the bent portion 54a of the small spring plate 54. A bolt 57 having one end fixed to the middle plate spring 55 allows the bolt 57 to be attached to the middle plate spring 55 so as to be freely movable in the vertical direction.

58 is a welded ring interposed between the nut 59 and the lower support spring 56; 60 is a ring wound around the bolt 57 between the lower support spring 56 and the middle plate spring 55;
6 and the middle leaf spring 55 are biased so as to be separated from each other.

The small spring plate 54 and the bridge plate 52 are in elastic contact with each other via the intermediate plate spring 55, and are slidable only in the forward and reverse directions of the arrow a.

Next, to describe the operation of the present invention, FIGS.
In the figure, the mounting block 8 is connected to the dummy head 4 so as to extend, and the device of the present invention is attached to the roller R10 by the dummy head 4.
0 and R200, the probe 14 is protected by the guide means 6.

At this time, the bridge plates 52, 52 are connected to the plurality of pairs of rollers 100.
The measuring means 3 straddles the pair of rollers RIOrl and R200 facing each other in the measuring direction by the other biasing means 17 mentioned above, and the measuring means 3 straddles the pair of rollers RIOrl and R200 that are opposed to each other in the measuring direction. The measurement surface 21 is in contact with the force field, and in connection with this operation, the conversion device 40 can be operated via the arm 41 to transmit an appropriate signal to the outside.

This signal has the characteristic that an error in the distance d can be found by comparing it with a reference signal for a predetermined distance between the rollers R100 and R200, and the smaller the error in the distance d, the more accurate the distance value can be found.

To explain using FIG. 10, a line connecting the centers 01 and 02 of a pair of rollers R100 and R200 is defined as la
, the spherical surfaces formed by the pair of probes 14a and 14b are B1 and B2, their centers (spherical centers) are tl and t2, and the spherical surface B1
and the radius of B2 is R1, the line connecting these centers t1 and t2 is tb, and the line ta is roller 8.

. and the respective intersections with roller R200 as Pl and B2,
Let the intersections of the line tb with the spherical surfaces B1 and B2 be Q1 and origin, respectively.

In the figure, a measuring device according to the present invention is installed between a pair of rollers R100 and R20 with an inclination of angle θ (device installation error).
It shows the state inserted between 0.

Further, twice the radius R, that is, 2R, becomes the specific distance d between the pair of rollers R100 and R200 (d=2R).

FIG. 10 shows a state in which the distance between the pair of rollers R100 and R200, that is, between Pl and B2 (=da) is much wider than the specific distance d (da>d), and the distance between the pair of rollers 14a and 14b, ie between Ql and 92, is expressed as db.

Of course, this is converted into an electrical signal and read out.

In this case, db does not necessarily match the above-mentioned daki, but
is obtained by approximating the value, and in the state shown, db is 2R
Since the distance between the pair of rollers is a dog (db>2R), it is detected that the distance between the pair of rollers is a dog.

Note that this means for reading data from the converter 40 is well known in the art, so its explanation will be omitted.

Next, as shown in FIG.
), even if the inclination error at the time of measurement insertion of the device according to the present invention has an angle θ as described above, there is a difference between the pair of measuring elements 14a and 14b, that is, Ql and 9.
2 (2 db) is equal to 2R (db = 2R), and d
Since a-db=2R, it is determined that the specific distance d is maintained between the pair of rollers R and R20000.

In addition, if it is a conventional measuring device, the measuring elements j4a and 14
Since the contact surface of roller b is flat as shown in FIG. 11, when it is installed with an inclination of angle θ as described above, the distance d.

This results in measurement errors.

In addition, between the pair of rollers R1oo and R200, that is, in the case where da is smaller than da (da<d), db is smaller than 2R, which indicates that an error has occurred with respect to the specific spacing d. be known.

In addition, in the above description, the case where the line tb has an inclination of angle θ with respect to the line ta (with respect to the plane perpendicular to the rotational axes of the pair of rollers R100 and R200) (on the paper), but with respect to the paper It is also conceivable to tilt at an angle θ.

However, even in such a case, since the surfaces of the pair of measuring elements 14a and 14b are formed into spherical surfaces, the same effect as in the above case will be produced, and the difference between the pair of rollers R100 and R200 will be produced. It is possible to know the error for the specific interval d.

According to the present invention described above, the pair of rollers 1 (too
When inserting the device according to the present invention between R200 and R200 and measuring the error for a specific interval, even if the insertion angle has an angle θ in all directions,
According to the apparatus of the present invention, measurement errors that conventionally occur based on this can be reliably avoided.

According to this device, furthermore, a pair of detection levers 13
are configured with parallel springs 13a and 13b, respectively, so that the axes of the pair of probes 14a and 14b (explained in FIG. 21) is always located on a straight line, regardless of changes between the pair of probes 14a and 14b.

Although this is a conventionally well-known means, it has the feature of allowing even more accurate error detection to be performed.

Also, insert the device of the present invention in the direction of arrow a using a dummy,
Alternatively, when pulled out, the device is smoothly guided by the front and rear curved portions 51 of the bridge plate, and the probe is also smoothly guided by its side plate 23a, so that the roller spacing can be measured sequentially or at a desired location.

Furthermore, even in high temperature and high humidity environments, the present invention allows easy measurement because it can be operated using a dermal armature.Also, since it does not use a general bearing but uses a hinge action using a cross spring, it cannot be used with other bearings. Unlike the above, it has the feature that it can reduce failures due to temperature, and since the measuring point is configured to be supported by a parallel spring, the measuring point 14a, 14 within a certain value
Even if there is a variation in the distance b, the measurement surface 21 moves in parallel as shown by the dotted line in FIG. 5, and does not need to be tilted.

Therefore, there is an advantage that accurate measurements can be made.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of a continuous casting apparatus for steel sheets to which the present invention can be applied, Fig. 2 is a perspective view of its sprue, Fig. 3 is an explanatory diagram of the roller spacing, and Fig. 4 is an embodiment of the invention. A perspective view of the embodiment, and FIG. 5 is a side view of a part of the main part in cross section.
FIG. 6 is a sectional view of FIG. 5, FIGS. 7 and 8 are partially exploded perspective views of other biasing means, FIG. 9 is a sectional view of essential parts of the guide means, and FIGS. FIG. 11 is an explanatory diagram of each operation. R100 and R200 are rollers, 1 is an injection port, 2 is a connecting portion, 3 is a measuring means, 4 is a dermi head, 5 is a handle device,
6 is a guide means, 7 is an elastic support plate, 8 is a pile block,
10 is a support rod, 11 is a yoke, 14 is a probe, 15 is a connecting block, 16 is a transducer, 17 is another biasing means, 23
is a side plate, and A is a biasing means.

Claims (1)

[Claims] 1 A device for measuring the error in the specific spacing between a pair of rollers arranged in parallel while maintaining a specific spacing, one end of which is fixed to the base, and the other end of which is in contact with the pair of rollers. a pair of detection levers each having a measuring element attached thereto, each of the detection levers being arranged substantially parallel to each other and having two parallel springs;
The contact surface of each of the measuring elements with the roller is formed into a spherical surface having a diameter equal to the specific interval, respectively,
A distance measuring device comprising: a converter that converts the amount of displacement between the pair of probes into an electrical signal.