WO2018073205A1

WO2018073205A1 - Protective device and method for holding a casting stream protective pipe

Info

Publication number: WO2018073205A1
Application number: PCT/EP2017/076406
Authority: WO
Inventors: Heinz-Werner Biegner
Original assignee: REINGUSS s.r.o
Priority date: 2016-10-17
Filing date: 2017-10-17
Publication date: 2018-04-26
Also published as: SI3525956T1; PT3525956T; EP3525956A1; DE102016119706A1; EP3525956B1; RS62265B1; ES2877815T3; PL3525956T3

Abstract

The invention relates to a protective device for a casting stream issuing from a casting apparatus, having: a casting stream protective pipe (3); a bearing ring (1) that engages around the casting stream protective pipe (3) at an upper inlet end, wherein a collar of the casting stream protective pipe (3) rests on the bearing ring (1); and a fastener (20) for the bearing ring (1), said fastener being provided on the casting apparatus, wherein a spring element (6) fastened to the fastener (20) presses the bearing ring (1) against the casting taper (28). The invention further relates to a method for holding a casting stream protective pipe (3) on a casting apparatus, wherein a bearing ring (1) engages around the casting stream protective pipe (3) at an upper inlet end and a collar of the casting stream protective pipe (3) rests on the bearing ring (1), and wherein, by means of a handling device, the bearing ring (1) with the casting stream protective pipe (3) is fastened to a fastener (20) attached to the casting apparatus in such a way that a spring element (6) fastened to the fastener (20) presses the bearing ring (1) against the casting taper (28). To simplify handling of the protective device, according to the invention the spring element (6) is attached to the bearing ring (1) in such a way that is can be displaced in a longitudinal direction (7).

Description

Protective device and method for holding a pebble protective pipe

The invention first relates to a protective device for one of a

Casting emanating pouring stream, with a Gießstrahlschutzrohr and with a bearing ring which engages around the Gießstrahlschutzrohr at an upper inlet end, wherein a collar of the pouring blast pipe rests on the bearing ring, and with a fastening means for the bearing ring, which is attached to the casting device, wherein a on the Attachment fastened spring element presses the bearing ring to the casting cone. The invention further relates to a

A method for holding a Gießstrahlschutzrohres on a casting apparatus, wherein a bearing ring engages around the Gießstrahlschutzrohr at an upper inlet end and a collar of the Gießstrahlschutzrohres rests on the bearing ring, and wherein the bearing ring with the Gießstrahlschutzrohr by means of a

Handling device is attached to a fastening means, which is attached to the casting device, that one on the fastening means

fastened spring element presses the bearing ring against the casting cone.

In the continuous casting of steel, the pouring stream emerging from the ladle is enveloped by a ceramic pouring jet protective tube. The pebble protective pipe is attached to the casting cone immediately prior to casting, purged with oxygen after casting and reused several times.

A protective device and a method of the aforementioned type are known, for example, from AT 514848 A1: The bearing ring of

Gießstrahlschutzrohr is used here via a bayonet lock in a holder, which in turn is pressed by means of coil springs to the casting apparatus.

The closing and opening of the bayonet closure requires a high-precision rotation of the bearing ring with the Gießstrahlschutzrohr about a vertical axis.

task

The invention has for its object to simplify the handling of the protection device. solution

Starting from the known protective device is proposed according to the invention, that the spring element is mounted in a longitudinal direction displaceably on the bearing ring. In the protective device according to the invention takes over the prior art, the displaceable spring element during the casting, the support function of

Handling device. The complex control and monitoring of the handling device during the casting is eliminated. The handling of the protective device is thus significantly simplified. The invention according to the casting individually adapted fastening means allows the use of the same spring element on different casting devices.

Preferably, in a protection device according to the invention

Attachment means attached to a pan slider under the casting cone. The pan slider has sufficient stability to the

To carry pouring protective pipe. Alternatively, the attachment means may be attached to the casting apparatus, for example, with a separate support structure.

Preferably, a protective device according to the invention at the

Handling device on an adapter that receives the bearing ring. The use of an individually adapted to the handling device adapter allows the use of the same fastener with

different handling devices.

Preferably, such a protective device according to the invention on the adapter on a conical receiving element on which the bearing ring is centered by its own weight. Such conical, in particular pyramidal receiving elements are known on agricultural vehicles, for example on tractors and allow quick change of attachments - here: the Gießstrahlschutzrohres. Preferably, a protective device according to the invention has a drive which fixes the spring element to the casting device. The drive may in particular comprise one or more hydraulic, pneumatic or mechanical cylinders. Such a drive eliminates the manual attachment of the spring element in the high-risk area directly on the casting device.

Preferably, a protective device according to the invention has a releasable latch, which prevents disengagement of the bearing ring from the handling device. Such bars are also known on agricultural vehicles and prevent the unintentional release of an attachment - here: the Gießstrahlschutzrohres - of the receiving element.

Starting from the known method is according to the invention

suggested that the spring element is slidably mounted in a longitudinal direction on the bearing ring. The inventive method has

alike the advantages of the protective device according to the invention.

Furthermore, according to the invention, a method for operating a

Casting proposed, wherein prior to casting through the casting cone a Gießstrahlschutzrohr according to the invention held on the casting device and after attaching the spring element, the handling device is released from the bearing ring, the bearing ring is held with the Gießstrahlschutzrohr during casting on the casting and after casting the

Handling device triggers the bearing ring with the Gießstrahlschutzrohr of the casting device. The handling device is thus not part of the protective device during the casting. The cost of control and monitoring drops significantly and the handling device can be used elsewhere during the casting - for example, on another casting device. embodiment

The invention will be explained below with reference to an embodiment. Show it

Fig. 1a / b a bearing ring and an adapter of an inventive

Protection device

Fig. 2a / b, a fastener and the recorded on the adapter

Bearing ring of the protective device according to the invention and

Fig. 3 and 4a - e the mounted protection device according to the invention.

The bearing ring 1 shown in Figure 1a has an upwardly open, closed in the circumference receiving hopper 2 for a (only in Fig. 3ff.) Gießstrahlschutzrohr 3 on. At the periphery of the receiving hopper 2 is a downwardly open, pyramid-shaped conical recess 4 is formed. In the recess 4, the bearing ring 1 has a radial blind bore 5. At the top of the receiving hopper 2 is a rectangularly curved spring element 6 made of spring steel hinged and slidably mounted in the longitudinal direction 7.

The adapter 8 shown in FIG. 1b has, at the rear end 9 of a square-shaped carrier 10, a flange plate 11 for attachment to a handling device (not shown) and at the front end 12

pyramidal conical receiving element 13, matching the recess 4 on the bearing ring 1.

The adapter 8 has two guide elements 14 attached to the carrier 10 on both sides. The guide elements 14 each have an upwardly open groove 15, are connected to a bolt 16 and pivotable by means of two electromechanical cylinder 17 about a pivot axis 18 on the carrier 10. In addition, a bar 19 (visible only in the sectional view in FIG. 3) in the hollow support 10 is longitudinally displaceably mounted.

To hold a received in the bearing ring 1 Gießstrahlschutzrohr 3 to a casting device, first mounted on a handling device adapter 8 (casting device and handling device are not shown.) With the receiving element 13 in the recess 4 and the bolt 19 is moved into the blind bore 5 of the bearing ring 1. The bearing ring 1 is firmly connected to the adapter 8.

The fastening means 20 shown in Figure 2a has a rectangular

Support plate 21 with a central bore 22 and at the bottom 23 in front of a double hook 24 and the rear of a single hook 25, which are each open to the rear. The double hooks 24 and the single hook 25 each have an upwardly rising guide surface 26 and the single

Hook 25 has a latching groove 27 transversely to the guide surface 26.

In order to support the pouring stream protection tube 3 on the casting device, the attachment means 20 is attached to the casting device in such a way that a casting cone 28 (not shown in FIGS. 3 ff.) Penetrates its central bore 22. In particular, the fastening means 20 can be screwed to a (not shown) pan slider of the pouring device.

The - as shown in Figure 2b - recorded on the adapter 8 bearing ring 1 with the Gießstrahlschutzrohr 3 is applied by means of the handling device to the casting cone 28. The spring element 6 is here first in the

Positioned longitudinally 7 in front of the double hook 24 and the hook 25 and is located in the grooves 15 of the guide elements 14 a. It is by means of

Guide elements 14 pushed over the guide surfaces 26 with its front side 29 on the double hooks 24 and with its rear side 30 on the individual hooks 25 until it engages in the latching groove 27.

Figures 3 and 4 a to e show the attached to the casting cone 28

Gießstrahlschutzrohr 3 and the adapter 8 in a position shortly after the

Engaging the rear side 30 of the spring element 6 in the locking groove 27 on the

Fastening means 20: The spring element 6 is on the double hook 24 and the single hook 25 of the fastener 20 down and on the

Casting cone 28 supported upwards and so between the

Fastening means 20 and the casting cone 28 clamped that it presses the bearing ring 1 and thus the Gießstrahlschutzrohr 3 up to the casting cone 28. During casting, so the spring element 6 compensates for wear of the Gießstrahlschutzrohres 3 by tracking over a vertical travel 31 of up to several centimeters.

After holding the Gießstrahlschutzrohres 3 to the casting device, the bolt 19 is first withdrawn in the adapter 8 from the blind bore 5 of the bearing ring 1 and so the bearing ring 1 is released from the adapter 8. The adapter 8 is now removed by means of the handling device down from the recess 4 on the bearing ring 1.

After the casting is in the reverse direction by means of

Handling device of the adapter 8 with its receiving element 13 again inserted into the recess 4 on the bearing ring 1 and fixedly connected by means of the bolt 19 with the bearing ring 1. Subsequently, by means of

Guide elements 14, the spring element 6 pulled by the double hook 24 and the single hook 25 and so the bearing ring 1 with the

Gießstrahlschutzrohr 3 solved by the fastener 20 and the casting device.

Subsequently, the bearing ring 1 is removed with the Gießstrahlschutzrohr 3 from the casting cone 28 down and moved by means of the handling device to another processing station, where the

Gießstrahlschutzrohr 3 cleaned with oxygen from slag and replaced if necessary, and finally led to another cast again to the casting apparatus.

In the figures are

1 bearing ring

2 receiving funnels

3 Gießstrahlschutzrohr

4 recess

5 blind hole

6 spring element Longitudinal adapter rear end carrier

Flange plate front end receiving element guide element groove

bolt

cylinder

Swivel axle bolt

Fastener carrier plate bore

bottom

Double hook hook

Guide surface locking groove

casting cone

Front side back

travel

Claims

claims

1. Protection device for emerging from a pouring device

Pouring stream, with a pouring blast protective tube (3) and with a bearing ring (1), which surrounds the pouring blast protective tube (3) at an upper inlet end, wherein a collar of the pouring blast protective tube (3) rests on the bearing ring (1), and with a fastening means (20 ) for the bearing ring (1), which is attached to the casting device, wherein an on the

Fastening means (20) fixed spring element (6) the bearing ring (1) to the casting cone (28) presses, characterized in that the

Spring element (6) in a longitudinal direction (7) displaceable on the

Bearing ring (1) is mounted.

2. Protection device according to the preceding claim, characterized

in that the fastening means (20) is attached to a ladle slide under the casting cone (28).

3. Protection device according to the preceding claim, characterized by an adapter (8) on a handling device which receives the bearing ring (1).

4. Protection device according to the preceding claim, characterized by a conical receiving element (13) on the adapter (8) on which the bearing ring (1) is centered by its own weight.

5. Protection device according to one of the preceding claims, characterized by a drive which fixes the spring element (6) on the casting device.

6. Protection device according to one of the preceding claims, characterized by a releasable latch (19) which prevents release of the bearing ring (1) of the handling device.

7. A method for holding a Gießstrahlschutzrohres (3) on a

Casting device, wherein a bearing ring (1) surrounds the Gießstrahlschutzrohr (3) at an upper inlet end and a collar of the

Gießstrahlschutzrohres (3) rests on the bearing ring (1), and wherein the bearing ring (1) with the Gießstrahlschutzrohr (3) by means of a

Handling device is attached to a fastening means (20), which is attached to the casting device, that a on the

Spring element (6) in a longitudinal direction (7) displaceable on the

Bearing ring (1) is mounted.

8. A method for operating a casting apparatus, wherein before pouring through the casting cone (28) a Gießstrahlschutzrohr (3) according to the aforementioned claim is held on the casting device, characterized in that after fastening of the spring element (6), the handling device of the bearing ring (1 ), the bearing ring (1) with the

Gießstrahlschutzrohr (3) is retained during casting on the casting apparatus and after the casting, the handling device the bearing ring (1) with the Gießstrahlschutzrohr (3) decreases from the casting device.