JPS5937710B2 - A device that guides the dummy bar from above to the continuous casting equipment - Google Patents

Abstract

1. Apparatus for downwardly introducing a starting strand (9) into a continuous casting installation with the aid of a carriage which is displaceable on rails (5) on a casting platform (2), is provided with a drive (4, 29) and consists of an upper part (6, 22) and a lower part (7, 23), on which carriage the starting strand (9) can be centred in the transverse direction and adjusted in the longitudinal direction, the upper part (6, 22) resting on the lower part (7, 23), characterized in that the upper part (6, 22) is movable, in a horizontal plane, relatively to the lower part (7, 23) by at least one device (13, 14, 33, 34, 37, 40).

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a vehicle for guiding a dummy bar from above to continuous casting equipment, which is composed of an upper part and a lower part, is movable on a rail on a platform, and is equipped with a drive machine.
The present invention relates to a device for guiding a dummy bar from above into a continuous casting facility, in which the dummy bar can be laterally aligned on the vehicle, and the upper part is supported on the lower part.

It is necessary to center the dummy bar, which is guided into the continuous steel casting equipment from above.

This is because if the dummy bar is incorrectly transmitted on the vehicle, this can cause the running strand to run diagonally and cause jamming that interferes with the manufacturing process, with associated accidental damage to the mold, resulting in poor quality or breakage. This is to avoid causing an out.

According to the known device, the dummy bar enters the mold away from the vehicle, is movable vertically in the mold position, and is arranged perpendicularly to the mold, and on the narrow side of the mold, an adjustable stamp is formed to determine the length of the dummy bar. It is pushed across the direction and is thereby centered.

Using a device equipped with a vehicle stop, it is possible to adjust the vehicle as well as the dummy bar, which slides into the mold from a vertically arranged guide, in the length direction of the strand.

In practice, of course, it is necessary to maintain clearance between the narrow side of the dummy bar and the narrow side of the mold, but it has been found that the arrangement of the markings described above makes it difficult to adjust the centering of the guide for viewing purposes.

A major drawback is that the position of the strands relative to the vehicle can only be calibrated in the upper free hanging section of the mold.

Therefore, it is inevitable that the dummy bar placed diagonally on the vehicle will run further diagonally despite being calibrated as a whole, which will lead to tilting and damage to the mold.

This is because the above calibration can only be performed rapidly because the dummy par is very heavy.

Furthermore, according to the known guiding device, the entire length of the dummy bar is aligned using a ruler across its length before being carried in, and the ruler is guided on the vehicle from the upper and lower parts;
It is adjusted and moved towards the strand by means of a pressurized cylinder, is displaceable by a single roller and is located on a table.

The drive for moving the dummy par vehicle is longitudinally alignable.

In the case of a large strand, the dummy bar is of course very heavy as mentioned above, and therefore the friction is large. Therefore, with a displacement device that is competitive in size and cost, lateral movement can only be done intermittently, and it is difficult to accurately center the bar in a short period of time. It is not possible to match.

Another disadvantage of this device is that the dummy bar, once aligned, can no longer be aligned later during loading if the head and chain dimensions are different.

This is because the displacement ruler adjusted on the chain will not allow the larger dummy par head to pass.

The object of the invention is to create a device for centering and guiding a dummy bar into a continuous casting installation before and/or during its introduction into the continuous casting installation from above.

The problem is solved in that the upper part of the vehicle is moved in the lateral direction of the dummy bar with respect to the lower part of the vehicle by means of at least one device.

According to the device of the invention, before and/or during guiding of the dummy bar placed obliquely on the vehicle to the mold,
There's nothing wrong with coming to terms with it.

The dummy bar can easily change its position relative to the mold.

This is because the heavy dummy bar is not moved along its entire roughened bearing surface, but via a movable bearing.

Therefore, only a smaller, less expensive displacement device is required with relatively less force, with which the centering of the dummy bar can be done quickly, accurately and less abruptly.

The possibility of observing the strands being run into the mold is not obstructed, thus omitting the mold upward movement device which obstructs the field of vision.The movement device can be later aligned even during the introduction into the mold. .

Scratches on the mold walls or pinching of dummy bars in the mold that result in quality deterioration or strand breakouts are completely eliminated.

According to a feature of the invention, the lower part of the vehicle has a yoke shape extending across the length of the dummy bar on the side facing the guiding place and is guided by a pair of wheels, and the upper part of the vehicle is partially supported by the lower part, and It has the advantage of being guided on rails by another pair of wheels.

This feature represents a simple form of the device according to the invention, in which the pivoting takes place around the upper pair of wheels, so that the pivotable bearings are omitted and it is preferably used in lighter dummy pars.

According to another embodiment of the invention, the lower part is moved by two pairs of wheels and the upper part rests entirely on said lower part.

This ensures the possibility of upward movement even when the weight of the dummy bar is large.

Advantageously, the upper part can pivot around the trunnion relative to the lower part.

It is an effective method to move the trunnion transversely to the longitudinal axis of the dummy bar so as to align the dummy bar with an axis parallel to the longitudinal axis of the lower truck.

An effective method is to move the upper part of the trunnion and dummy bar in the longitudinal direction.

It makes it possible to precisely adjust the dummy bar in the longitudinal direction.

The present invention will now be explained using conceptual diagrams based on two embodiments.

In FIG. 1, a bottomless mold 3 for slabs is arranged on a casting platform 2 of a continuous casting installation.

The dummy bar is guided into the mold from above with the aid of a vehicle movable on rails 5 provided with a drive 4.

The vehicle consists of an upper part 6 and a lower part 7.

Mounted on its upper part 6 is a platform 8 containing a dummy bar 9 and having a driven roll 10.

The upper part 6 is guided by a pair of wheels 11, while the lower part 7 facing the mold guide is guided by a pair of wheels 12 on a rail arranged on the casting platform 2.

A part of the upper part 6 is located on the lower part γ, and the other part is located on the wheel pair 1
1 on the rails.

The upper part 6 is movable in the lateral direction of the dummy bar relative to the lower part 7 with the gear motor 13.

A gear motor rotating around a spindle 14 engaged in the upper part makes the upper part movable.

Instead of the devices 13, 14 it is also possible, for example, to use hydraulic devices.

The dummy bar is mounted on the vehicle using known means, such as a crane (not shown).

Due to the incorrect position, it is inevitable that the dummy bar will be placed at an angle on the vehicle, and such a situation is illustrated in FIG.

The upper part 6', shown dotted, is adjusted to its normal position with its central axis above the center C of the mold.

At this position, the centers of the top and bottom will overlap.

The central axis of the obliquely placed dummy bar (not shown) and the central axis d of the upper part 6' form an angle α with each other.

This angle α, together with the upper part 6', must be rotated by the force of the gear motor 13 and the spindle 14, so that the dummy bar located obliquely on the upper part of the upper part 6' is rotated, so that the axis of the dummy bar occupies position b' and overlaps with the mold center axis C. .

The solid line in FIG. 2 shows the position where the upper part 6 has been rotated through an angle α, which indicates the axis after the upper part has been rotated.

In this position, the upper pivoted central axis d' forms an angle α' with the mold central axis C.

In FIG. 2, the turning angle is exaggerated for clarity.

The yoke 1 is configured in a circular arc shape for ease of viewing in the drawing.

Of course, the pivotability of the upper part relative to the lower part is possible with devices of other constructions.

In FIGS. 3-5, a dummy bar is mounted on one dummy bar 8 of a dummy bar vehicle divided into an upper part 22 and a lower part 23.

This vehicle lower part 23 is moved on the casting platform using two wheels and a drive 29 on rails.

For heavier dummy bars, more wheel pairs are applied.

The vehicle upper part 22 rests entirely on the lower part 23.

In the part facing the mold 3 the upper part 22 is supported on the lower part with a plain bearing 30, and in the part facing away from the mold the upper part 22 is supported on another bearing 31.

The upper part pivots around a rotating trunnion 32 on bearings 31.

The upper part is operated against the lower part by a spindle 34 mounted on the upper part together with a gear motor 33 mounted on the upper part.

In this case, the trunnion forms a fulcrum.

Preferably, this fulcrum is above the rear axle 35, and is also located at the lower end opposite the mold, so as to keep the force handle as large as possible and forces as low as possible to allow for pivoting.

In the embodiment shown in FIGS. 3-5, the dummy bar is moved in the longitudinal direction with the aid of a gear motor 36 and a spindle 39 and transversely to the dummy bar's longitudinal axis by another motor 37 and another spindle 40. The trunnion 32 is completed as shown.

FIG. 5 shows in detail this trunnion 32, which is laterally and longitudinally displaceable, in cross section.

In this way, it is possible to align the vehicle upper part 22 and the dummy bar 20 along their lengths, or even transversely to their lengths.

These are necessary in order to align the axis of the dummy bar 9, which is placed as a single dummy bar and displaced in parallel, with the long axis of the lower part aligned with the center of the mold.

FIG. 4 has a dummy bar 9 mounted obliquely on the upper part 22.

This central axis is the angle between β and the vertical long axis C passing through the center of the mold.
Form an exaggerated -.

This angle β with respect to the lower part must be moved around the trunnion 32 using the displacement device 33, 34, so that the axis of the dummy bar is in position b'
Close and overlap vertical position C.

The upper axis d then closes in position d' and forms an angle with the vertical position.

For clarity, the calibrated dummy bar position 9' is shown in dash-dotted lines.

Instead of a rotating trunnion, a sliding bearing such as 30 may be equipped with a similar displacement device 33,34.

Similarly, in the case of a device with a pivoting mold, the dummy bar is introduced into the strand guide channel from above instead of through the mold cavity.

For reasons of location, the platform on which the vehicle can be transferred may also be an auxiliary platform above or below the casting platform; in this latter case, the first area for guiding the slab can be pivoted, or the dummy bar can be guided from the side. It can be moved up to.

The invention shown in the examples is not limited to use for the described slabs, but can also be used in equipment with billet or bloom straight or curved roller aprons.

[Brief explanation of drawings]

FIG. 1 is a side view of a vehicle having a dummy bar;
1, FIG. 3 is a side view of another embodiment of the wheel, FIG. 4 is a plan view of FIG. 3, and FIG. 5 is a plan view of FIG. 4. It is a partial cutaway diagram by v-cutting. 2...Casting platform, 3...Bottomless mold, 5...Rail, 6,22...
・Top of the vehicle? , 23... Lower part of the vehicle, 8...
...One dummy bar, 9...Dummy bar, 11
．． 12...Wheel pair, 13,33°36...
... Gear motor, 14, 34 ... Spindle, 29 ... Drive machine, 30 ... Sliding bearing, 32 ... Rotating trunnion.

Claims (1)

[Claims] 1. A vehicle consists of an upper part and a lower part, is movable on rails on a platform, and is equipped with a drive machine, on which a dummy bar can be laterally aligned and can be adjusted in length. In the apparatus for guiding a dummy bar from above into a continuous casting installation from above, the upper part of the vehicle is centered relative to the lower part by at least one device, the upper part being supported on the lower part. A device 2 for guiding a dummy bar from above to continuous casting equipment, characterized in that the lower part of the vehicle has a yoke shape that crosses the length direction of the dummy bar on the side facing the guiding place, guided by a pair of wheels;
2. The device for guiding a dummy bar according to claim 1, wherein the upper part of the vehicle is partially supported by the lower part and is guided on a rail by another pair of wheels. 3 the lower part is supported by two pairs of wheels, 1
Device 4 for guiding a dummy bar according to claim 1, characterized in that the lower part of the dummy bar supports the entire upper part; characterized in that the upper part is rotatable with respect to the lower part around a trunnion. A device for guiding a dummy bar according to claim 3. 5. The device for guiding a dummy bar according to claim 4, wherein the trunnion is movable transversely to the long axis of the dummy bar. 6. The device for guiding a dummy bar according to claim 4, wherein the upper portion is movable together with the trunnion.