DE2937855A1 - Rotating tower carrying casting ladles - has two outer ladle jibs which can each swivel on inner jib, to save space in continuous casting plant - Google Patents

Abstract

The tower has a central pillar fitted with a motor employed to rotate a lower jib (1). Each end of jib (1) is fitted with a ring rolling bearing for a jib (9,10); and each jib (9,10) can be rotated on its bearing by a motor. Each jib (9,10) ends in a fork carrying a casting ladle. The result is that in addn. to the rotation of jib (1), each jib (9,10) can be rotated through a horizontal arc of pref. at least 180 deg., thus reducing the effective swivel radius of the tower. A bucket for emergency draining of the ladles can be located very near the tower, and space is saved.

Description

Swivel device for ladles

The invention relates to a swivel device for ladles, wherein with recordings for a ladle each provided boom around a vertical Axis can be pivoted so that a pouring ladle can be brought into a pouring position is.

Such a device known as a ladle turret is suitable especially for continuous casting plants in which the liquid in the ladle Metal is poured over a strand or over several strands. The liquid metal leaves the ladle through a bottom spout and passes through an intermediate container in one or more molds. There are swivel devices both with individually around a common axis as well as connected, jointly pivotable arms known.

Both types of construction require the same under otherwise identical conditions Space (enveloping circle). This space requirement makes it difficult to plan such devices in narrow longitudinal and transverse halls or within a narrow hall column division.

The aim of the invention is a swivel device for casting Pans, which requires less space under the same functional conditions and in which the ladle can be used more quickly and safely in an emergency an emergency ladle can be transported, which is closer to the casting stand within the swivel circle can be arranged.

According to the invention this is achieved in that each boom is designed in two parts and the outer part of the boom provided with the receptacles on the inner part in the sense of a reduction of the swivel radius in the horizontal direction is adjustable.

In this way there is a reduction in the enveloping circle diameter by approx. 25% and therefore planning in narrow halls or between closely spaced halls Hall supports regardless of the maximum swivel radius of the boom and ladle possible. The emergency socket can be arranged independently of the maximum swivel radius, so that a smaller distance to the casting stand and thus shorter and for the operating personnel safer pouring ladle routes are made possible in emergency situations.

According to a further feature of the invention, the outer part of the Boom on the inner part about a vertical axis from an aligned position to the inner part arranged pivotable by at least 900 to one or both sides. This ensures that a ladle is also taken over in an adjoining hall can be, if they are parallel to the strand outfeed direction pin is transported.

The outer part of the boom can advantageously by means of a roller bearing rotary connection be stored on the inner part.

Another advantageous embodiment of the invention is seen in that that the outer parts of the boom on the inner part in the radial direction and are stored extendable. Hydraulic cylinders can be used as an adjustment drive for the outer boom be provided.

Two exemplary embodiments of the invention are shown in the drawing. 1 shows the side view of a pivoting device with pivotable on the inside Boom mounted outer booms, Fig. 2 is a plan view of Fig. 1, Fig. 3 the Side view of a swivel device with retractable and extendable outer arms and FIG. 4 is a plan view of FIG. 3.

In the pivoting device shown in Figures 1 and 2 is an inner boom 1 by means of roller bearing rotary connection 2 on one on the foundation attached base 3 rotatably mounted. A motor 4 is arranged on the base 3, which About a gear 5 and a pinion 6 drives an intermediate pinion 7, which in a Ring gear 8 engages on the inner arm 1.

On the inner arm 1 are opposite outer arms 9, 10 by means of roller bearing rotary connections 11, 12 pivotally mounted for receiving each a ladle 13, 14 are designed like a fork. The outer arms 9, 10 can be converted by 90 "into the position shown in Fig.

2 can be pivoted position shown in dashed lines.

In this way, compared to the original enveloping circle 17 at Pivoting the inner boom 1 achieves a considerable saving in space that the Difference in the enveloping circle radii 17, 18 corresponds. In this situation also the takeover a ladle 14 a with parallel to the Strangaust conveying direction pin 19 take place. A correspondingly greater space saving can be achieved if the outer boom can be pivoted inwards by more than 900.

In the pivoting device shown in Figures 3 and 4 is a box-shaped inner boom 21 by means of roller bearing rotary connection 22 on a The base 23 fixed to the foundation is rotatably supported. There is a motor on the base 23! 24 arranged, which drives an intermediate pinion 27 via a gear 25 and a pinion 26, which engages in a ring gear 28 on the inner arm 21.

An outer arm 29 is displaceable in the inner arm 21 out, which is designed to receive a ladle 30 fork-like. In the outer Boom 29, an outer boom 31 is slidably guided, which is a ladle 32 carries. To move the outer arm 29 and 31 are on the inner arm 21 pressure medium cylinders 33, 34 arranged horizontally, the piston rods 35, 36 are hinged to the outer arms 29 and 31, respectively. By acting on the pressure cylinder 33, 34, the outer arms 29, 31 can be retracted telescopically independently of one another will. As a result, a difference in the enveloping circle radii 37, 38 is a corresponding saving in space achieved.

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Claims (5)

Claims 1. Swivel device for ladles, with recordings boom provided for one ladle each so pivotable about a vertical axis are that in each case a pouring ladle can be brought into a pouring position, characterized in that that each boom is designed in two parts and the one provided with the recordings outer part of the boom on the inner part in order to reduce the swivel radius is mounted adjustable in the horizontal direction. 2. Pivoting device according to claim 1, characterized in that each outer part (9, 10) of the boom about a vertical axis from an aligned Position to the inner part (1) can be pivoted by at least 900 to one or both sides is arranged. 3. Pivoting device according to claims 1 and 2, characterized in that that the outer parts (9, 10) of the boom on the inner part (1) of the boom by means Rolling bearing rotary connection are stored. 4. Pivoting device according to claim 1, characterized in that the outer parts (29, 31) of the boom on the inner part (21) in the radial direction are stored retractable and extendable. 5. Pivoting device according to one or more of claims 1 to 4, characterized in that between each outer part (9, 10 or 29, 31) of the boom and the inner part (1 or 21) as an adjustment drive Pressure cylinder are switched.