DE1239440B - Device for changing the roller guide segments of continuous casting plants - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B22d

German class: 31 b2- 11/12

Number: 1239440

File number: Sch 37069 VI a / 31 b2

Filing date: May 17, 1965

Open date: April 27, 1967

In the case of continuous casting plants with an arcuate one arranged after the continuous mold Strand guide, the installation and removal of the individual guide segments forming the strand guide causes difficulties. Done in a known manner the installation and removal of the individual strand guide segments using lifting equipment from above. This is very cumbersome and time consuming and requires that the upper casting platform with the installation and removal allow Openings is provided, the cover must be removed beforehand.

The object of the invention is to provide a device for removing and installing the arcuate strand guide formed from individual segments, which allows a brief change of z. B. to carry out strand guide segments damaged or contaminated as a result of a breakthrough in the strand without the continuous casting plant being affected in any way during this work, for example by removing covers, among other things. According to the invention, this is achieved by a carriage running next to the strand guide in rails with bearing surfaces for the strand guide segments, the running rails of the carriage extending in an arc shape and the center of curvature of the running rails being identical to the center of curvature of the strand guide and the running rails extending along the strand guide. The strand guide segments are pushed laterally onto the carriage and can then be lifted off in a simple manner by a hoist after they have moved out of the actual area of the system on the carriage and can be replaced by correspondingly new strand guide segments. When changing the strand guide segments, no precautions need to be taken on the continuous caster itself. This enables the strand guide segments to be changed quickly and easily. In a further embodiment of the invention, the carriage is equipped with a lifting device acting in the direction of the strand guide for the transverse transport of the strand guide segments. Such a lifting device can consist in a known manner of hydraulically, pneumatically or also electrically acting power devices. The car is advantageously moved into the respective working position by means of a cable pull. So that for all the segments forming the strand guide for transfer to the car and vice versa a precisely defined position on the car for installation or removal is guaranteed, two lowering devices are used to change the
Roller guide segments from
Continuous casting plants

Applicant:

Schloemann Aktiengesellschaft,

Düsseldorf, Steinstr. 13th

Named as inventor:

Adolf Meitz, Ratingen-Tiefenbroich

right standing support levels arranged on the car.

An embodiment of the device according to the invention is shown in the drawing.

F i g. 1 shows a side view of a continuous caster with the removal and installation device according to the invention for the individual strand guide segments;

F i g. 2 shows a view in the direction A of FIGS

F i g. 3 shows a top view of FIG. 1 in the area of the cable winch and pulleys.

In the figures, 1 denotes the intermediate container from which the liquid steel flows into the cooled continuous mold 2. The continuous mold 2 is attached to the mold table 2 a. After exiting the mold 2, the strand 3, which has solidified at the edge zones, is guided in the strand guide 4, which is composed of individual segments 4 ', and at the same time is further cooled until it is completely solidified. After exiting the strand guide, strand 3 is straightened by driving straightening unit 5 and then divided into partial lengths by separating devices (not shown). The individual strand guide segments 4 ', of which in FIG. 1 only three are drawn, are attached to the carriers 6 by means of screw connections, not shown. In addition to the strand guide 4, two U-rails 7 are arranged (FIG. 2), which form the track for the carriage 8. The center of curvature of these rails 7 and the center of curvature of the axis 9 of the strand guide 4 are identical to one another. Support surfaces 10 and 11 for the strand guide segments 4 'are provided on the carriage 8 and lie on planes perpendicular to one another. A known lifting device 12 for transversely moving the segments 4 'is also arranged on the carriage 8. At the top of the wagon there are

709 577/281

Claims (4)

Castors 13 arranged over which the ropes 14 of the winch 15 runners. The ends 16 of the ropes are hinged to the frame 17 of the continuous casting plant. At the same time, the bearing blocks 18 for the pulleys 19 are attached in the frame 17. The cable drums 20 are driven by the motor 22 via the reduction gear 21. The fact that the operative connection of the ropes 14 with the carriage 8 takes place via pulleys 13, a force transmission of 1: 2 takes place. Since at the same time the traversing speed of the trolley is only half as high as the rope speed, the trolley can be adjusted very precisely into the position of the strand guide segment in question. After loosening the fastening screws, not shown, of the strand guide segment in question from the support frame 6, the relevant segment is moved transversely onto the support surfaces of the carriage by actuating the lifting device 12 and then by moving the carriage down to its lowest position (in the example shown, the lowest position is in the area of the Drive straightening unit 5) lifted off the car by the hall crane or other hoist and replaced with a new one. Subsequently, the carriage with the strand guide segment to be installed is moved back into the old position and, by actuating the lifting device 12 again, the new strand guide segment is moved transversely into the gap in the original segment and again with the support frame 6 z. B. fastened by means of screw connections. As shown in FIG. 1 can be seen, the removed strand guide segment 4 'is initially carried by the bearing surfaces 10 of the carriage. After the carriage has moved to the lowest position (shown in dashed lines) the strand guide segment is carried by the bearing surfaces 11 of the carriage. In this way, the strand guide segment is precisely fixed in relation to the strand axis on the carriage in every position of the carriage. The rails 7 for the car are, as their section in Fi g. 2 shows, U-shaped, so that the carriage is correctly guided with its running wheels and has a firm hold during the transverse displacement of the respective strand guide segments. Due to the fact that the changing device is arranged next to the strand guide and thus outside the immediate working area of the system, if the system has free access to the top in this area, the strand guide segment to be replaced can already be in the respective installation or removal position of the Lift the car from its support surfaces by means of a hoist without the car having to be moved downwards in an area in which in any case free accessibility z. B. the indoor crane is available for this location of the car. Patent claims: 1. Device for removing and installing the arcuate segments formed from individual segments Strand guiding of continuous casting plants, characterized by a carriage running alongside the strand guiding in rails with support surfaces for the strand guide segments, with the running rails of the carriage run in an arc and whose center of curvature is identical to that of the strand guide and the rails extend along the strand guide. 2. Apparatus according to claim 1, characterized in that the carriage with one in the direction the strand guide acting lifting device for transverse transport of the strand guide segments Is provided. 3. Device according to claims 1 and / or 2, characterized in that the carriage is in operative connection with a cable pull. 4. Device according to claims 1 to 3 or one of the same, characterized in that that the bearing surfaces of the car are effective in two mutually perpendicular planes are. 1 sheet of drawings 709 577/281 1. 67 © Bundesdruckerei Berlin