KR20120116507A - Tiltable converter having a pendulum bar suspension - Google Patents

Abstract

The present invention provides a suspension comprising a pendulum rod 3 connected by spherical pendulum bearings, articulated on all sides, to the converter vessel 1 by one end and to the support ring 2 by the other end, respectively. A tiltable converter with a system is provided. According to the invention, the spherical pendulum rod bearing has bolts 7 which pass through the pendulum rods 3 and are mounted in a spatially pivotable manner, each bolt 7 having a converter container 1. Supported on both sides of the pendulum rod 3 on or via the support bracket 4 on the support ring 2, the bolt 7 is mounted to the support bracket 4 by spherical support bracket bearings. The openings of the support bracket 4, through which the bolts 7 pass and the spherical support bracket bearings are arranged, are covered at their sides facing away from the pendulum 8 by the cover 8. In the converter according to the invention, with respect to at least one of the pendulum rods 3 and part of the suspension system assigned thereto, the bolts 7 are passed longitudinally by the clamping screws 9, and the clamping screws 9. Passes through the cover of the pair of support brackets 4 supporting the bolts 7 and extends over the spherical pendulum bearings and the spherical support bracket bearings between the covers 8 of the pair of support brackets 4. It is characterized by the presence of a positive connection.

Description

Tiltable converter with pendulum rod suspension {TILTABLE CONVERTER HAVING A PENDULUM BAR SUSPENSION}

The present invention relates to a tiltable converter having a suspension system comprising a pendulum rod.

Converters of this type are known for example from DE4327640 and from US6228320. The pendulum rod is here connected by means of a spherical pendulum bearing, articulated throughout, to the converter container by one end and to the support ring by the other end, respectively. Spherical pendulum bearings have bolts passing through the pendulum rods as bearing pins, wherein the bolts are supported on both sides with respect to the support ring or to the converter container by means of a support bracket. The bolt is mounted to the support bracket by spherical support bracket bearings. The openings in the support brackets, which are passed by the bolts and in which the spherical support bracket bearings are arranged, are covered here on their sides facing away from the pendulum by the cover, which is intended to avoid contamination and keep the support bracket bearing in place. do. When this type of converter is operated, problems may arise that the covers deform and tear from their fasteners. Similarly, damage may occur to the support bracket bearings. The cause of such damage is not known in the prior art. Due to the cover and the lack of a limited positional ability of the cover associated with such damage, the possibility of damage to the support bracket bearings increases. Repair of damage is labor intensive and reduces the availability of converters for steel fabrication.

DE4327640 US6228320

It is an object of the present invention to provide a converter having a suspension system comprising a pendulum rod in which the risk of damage mentioned above of the cover and support bracket bearings is reduced or eliminated.

This purpose is

-Converter vessel,

-Support ring,

A suspension system, the converter vessel comprising a suspension system connected to the support ring via the suspension system,

Suspension system

A plurality of pendulum rods connected by spherical pendulum bearings, articulated throughout, to the converter vessel by one end and to the support ring by the other end,

As well as at least one stabilization device for limiting the movement of the converter vessel relative to the support ring,

Spherical pendulum bearings have bolts that pass through the pendulum and are mounted in a spatially pivotable manner, each bolt being supported by the support bracket to the converter vessel and to the support ring on both sides of the pendulum rod. Support, the bolt is mounted to the support bracket by a spherical support bracket bearing,

The opening of the support bracket, which is passed by the bolts and in which the spherical support bracket bearings are arranged, is achieved by the tiltable converter, which is covered by the cover at its side facing away from the pendulum rod.

The converter according to the invention, for at least one of the pendulum rods and for these parts of the suspension system assigned thereto,

The bolt is passed longitudinally by the clamping screw, the clamping screw passes through the cover of the pair of support brackets that support the bolt, and a positive connection exists between the covers of the pair of support brackets, the positive connection It extends over spherical pendulum bearings and spherical support bracket bearings.

The deformation of the cover and the tearing of the cover from their fasteners causes the pendulum rod bearings and the support bracket bearings to be exposed to forces in the direction of the longitudinal axis of the bolt, which forces the components of the pendulum rod bearings and the loosened press fit of the support bracket bearings. It has been recognized by the inventors of the present invention that it is a decisive means due to the fact of inducing known damage with the fitting. In traditional converters according to DE4327640 and US6228320, the fasteners of the cover are not designed properly for the actual loads to be generated. In pendulum rod bearings and support bracket bearings, large frictional forces are generated due to the operating deformation of the converter support ring and the converter vessel, due to the harsh operating conditions of the steelwork and due to contamination. These frictional forces induce the generation of forces in the direction of the longitudinal axis of the bolt. Moreover, due to the high load, deformation of the pendulum rod bearing and the support bracket bearing also occurs subsequently. These factors lead to the loosening of the fittings present in the pendulum rod bearing and the support bracket bearing, of the components of the pendulum rod bearing and the support bracket bearing, so that the parts of the pendulum rod bearing and the support bracket bearing can be shifted with respect to each other. have. These relative movements induce a load on the cover, which in itself manifests deformation of the cover and tears from their fasteners. Since the force in the direction of the longitudinal axis of the bolt in a known converter with a suspension system including a pendulum rod flows into the cover via the support bracket bearing, both the cover and the support bracket bearing are placed under excessive load and there is no risk of damage. have.

By means of the solution according to the invention, the force in the direction of the longitudinal axis of the bolt is transmitted to the cover with reduced load on the support bracket bearing. The clamping screws fasten the cover and these parts of the pendulum rod bearing and the support bracket bearing in the direction of the longitudinal axis of the bolt. Due to the pretensioning of the clamping screw, the position of the part is defined and relative movement is prevented. Correspondingly, dynamic stresses and damages caused by this relative movement are prevented. The clamping screw is here designed for a number of maximum generated loads on the cover. The force in the direction of the longitudinal axis of the bolt is distributed to both covers by the central clamping screw.

By recognizing the problem behind damage, it is possible to provide an improvement by targeted means. Without recognizing these problems, only reinforcing pendulum bearing and support bracket bearings, covers and their fasteners, and all parts of the bolt can be considered as a solution to the problem. The inventive step is thus preliminary to the actual recognition of the underlying problem.

Converters are used for example for steel production.

For each pendulum bearing, there is a bolt. The bolt forms a bearing pin of the pendulum rod bearing or the support bracket bearing.

According to one embodiment of the tiltable converter according to the invention, the positive connection between the cover of the pair of support brackets is not only spherical pendulum bearings and / or bearing inner races of the spherical support bracket bearings, but also spherical vibrations. Pendulum bearings interposed between the self-supporting bearings and the spherical support bracket bearings and positively locked in relation to the pendulum bearings and in relation to the support bracket bearings, and between the spherical support bracket bearings and the cover and in relation to the support bracket bearings. And above the support bracket bearing intermediate element which is positively locked in relation to the cover.

One embodiment of the tiltable converter according to the invention, in which the support bracket bearings each have a bearing inner race formed by a spherical segment, is a ball race having a spherical surface in which the support bracket bearing intermediate element faces the cover. Positively supported relative to the spherical surface portion of the cover,

-Spherical surface of the bearing inner race of the spherical support bracket bearing connected positively by the ball race to the cover,

A spherical surface of the ball race, and

-Spherical surface of the cover

The radii of all are characterized by radiating from the same point.

Different spherical surfaces thus arise from different balls, and the spatial position of the center point of these balls is the same for all balls.

This configuration ensures that even in the case of misalignment of the bolts that may be present, for example due to manufacturing tolerances of the suspension system, the force in the direction of the cover is evenly distributed in the support bracket bearing and relayed to the cover. The nonuniform load and the exclusion of peaks of the load lead to an increase in the operating life of the support bracket bearings and increased reliability during the operation of the converter.

According to a preferred embodiment of the converter according to the invention, the spherical pendulum rod bearing has a bearing outer race, the bearing outer race of the spherical pendulum rod bearing is fastened to the pendulum rod by a retaining device,

In the case of at least one pendulum rod, at least one of the pendulum rod itself and / or its holding device is fitted with at least two stop devices for limiting the rotational play of the associated pendulum rod around its longitudinal axis.

By preventing excessive misalignment, direct contact between the pendulum rods-or sensitive components fastened thereto-and the support brackets is avoided, which leads to more uniform stress on the pendulum rod bearings and abrasion between the pendulum rods and the support brackets. It is to be understood that the sensitive part is fastened to the pendulum rod by means of a screw, for example, rather than the stop device itself. Screws for fastening the retaining device to the pendulum rod can be prevented from coming into contact with the support bracket, for example.

The stop device for limiting the rotational play can be for example a stop block, preferably made of metal.

Preferably, the stop devices are fitted such that they cover the area of the pendulum rod and / or the retaining device, which are erected perpendicularly to the longitudinal axis of the pendulum bar and lying in the plane comprising the longitudinal axis of the bolt.

According to a preferred embodiment of the tiltable converter according to the invention, the bearing outer race of the spherical pendulum rod bearing is fastened to the pendulum rod by a retaining device, the retaining device being sealed from the pendulum rod bearing intermediate element by a layered sealing ring, The layered sealing ring is located on the spherical surface of the pendulum bearing intermediate element arched opposite to the retaining device.

In this way, the distance between the retaining device and the pendulum rod bearing intermediate element, which must be sealed by the layered sealing ring, remains constant even in the case of misalignment of the pendulum rods, thereby ensuring a constant sealing effect.

The invention is described in more detail below with reference to exemplary schematic diagrams.

1 is an overall view of a tiltable converter having a suspension system including a pendulum rod,
FIG. 2 is an enlarged cross-sectional view of an area surrounded by a dotted line in FIG. 1,
3 is an enlarged detail view from the representation of FIG. 2;
4A is a side view of a pendulum rod positioned between a pair of support brackets,
FIG. 4B is a 90 ° rotated view of the apparatus shown in FIG. 4A.

In FIG. 1, a converter vessel 1 is connected to a support ring 2 via a suspension system. The suspension system comprises a plurality of pendulum rods 3. The pendulum bar 3 is connected to the converter container 1 by one end and to the support ring 2 via the support bracket 4 by the other end. The pendulum rod is connected to the converter vessel 1 and the support ring 2 artically throughout, by spherical pendulum rod bearings not shown here for better clarity. The stabilization device, which consists of a pair of guide hooks 5a and 5b fastened to the support ring 2 and a stabilizer 6 fastened to the converter container 1, has the converter container 1 and the support ring 2 mutually supported. Limit the amount you can move about.

FIG. 2 shows an enlarged cross-sectional view of the area enclosed by the dashed line in FIG. 1 with representations of spherical pendulum rod bearings and spherical support bracket bearings. The bolt 7 passes through the pendulum bar 3. The pendulum rod 3 is mounted on the bolt 7 in a spatially pivotable manner. On both sides of the pendulum rods 3, the bolts 7 are supported by the support bracket 4 with respect to the converter container 1. The bolt 7 passes through the opening in the support bracket 4 and is spherically mounted in the support bracket 4. The opening in the support bracket 4 is covered by a cover 8 at the side facing away from the pendulum bar 3. The bolt 7 is passed in the longitudinal direction by a clamping screw 9 which also passes through the cover 8 of the pair of support brackets 4 supporting the bolt 7. Between the covers 8 of the pair of support brackets 4 there is a positive pendulum rod bearing and a positive connection extending over the spherical support bracket bearings.

FIG. 3 shows an enlarged detail from the representation of FIG. 2. The positive connection between the cover 8 of the pair of support brackets 4 from FIG. 2, of which only one is shown in FIG. 3 for clarity reasons, and the bearing bush 10 of the spherical pendulum bearings and Over the bearing inner race 11b of the bearing inner race 11a and the spherical support bracket bearing, as well as between the spherical pendulum bearing and the spherical support bracket bearing, and the bearing bush 10 and the bearing inner race of the spherical pendulum bearing A spherical support bracket disposed in relation to 11a) and over the pendulum bearing intermediate element 12 which is positively locked in relation to the bearing inner race 11b of the spherical support bracket bearing and between the spherical support bracket bearing and the cover 8 Support bracket bearing intermediate, which is positively locked both with respect to the bearing inner race 11b of the bearing and with respect to the cover 8 It extends over the cow 13. The bearing outer race 14 of the spherical pendulum rod bearing is fastened to the pendulum 3 by a retaining device 15. The retaining device 15 is sealed from the pendulum bearing intermediate element 12 by a layered sealing ring 16, where the layered seal ring 16 is arched against the retaining device 16. 12) is located above the spherical surface. The support bracket bearing intermediate element 13 is a ball race having a spherical surface facing the cover 8, which ball race is positively supported relative to the spherical surface portion of the cover 8, wherein

The spherical surface of the bearing inner race 11b of the spherical support bracket bearing positively connected to the cover 8,

A spherical surface of the ball race, and

The spherical surface of the cover (8)

The radii of all radiate from the same point. To illustrate this fact, in Fig. 2 the circle of the section through the spherical surface portion of the cover 8 is shown in dotted line representation.

4a shows a side view of a pendulum bar 3 positioned between a pair of support brackets 4. On the holding device 15, two stop blocks 17 are fitted as stop devices for limiting the rotational clearance of the pendulum bar 3 around its longitudinal axis. The stop block 17 is fitted on the retaining device 15. These stop blocks are located there to limit rotation around the longitudinal axis of the pendulum bar.

FIG. 4B shows a 90 ° rotated view of the device shown in FIG. 4A. The plane 18 including the longitudinal axis of the pendulum bar is shown in a dashed line representation extending vertically. Here, it is evident that the stop block 17 covers the area of the holding device 15 lying in the plane 19, shown by a dashed line representation extending horizontally, which plane comprises the longitudinal axis of the pendulum rod. Is perpendicular to the plane 18 and comprises the longitudinal axis of the bolt. In this way, the rotation of the pendulum bar 3 around its longitudinal axis is limited. The restriction is realized by the contact of the stop block 17 with the support bracket 4. Since the stop blocks are somewhat higher than the screws 20 which fasten the retaining device to the pendulum bars, these screws 20 are protected by the stop blocks from damage in the case of rotation of the pendulum bars 3 around their longitudinal axes.

1: converter vessel 2: support ring
3: pendulum rod 4: support bracket
5a, 5b: guide hook 6: stabilizer
7: bolt 8: cover
9: clamping screw 10: bearing bush
11a, 11b: inner race bearing 12: pendulum bearing intermediate element
13: support bracket bearing intermediate element 14: bearing outer race
15: holding device 16: layered sealing ring
17: stop block 18: plane containing the longitudinal axis of the pendulum rod
19: plane [perpendicular to plane 18] 20: screw

Claims (5)

A converter vessel (1),
Support ring (2),
A suspension system, comprising: a suspension system in which the converter vessel 1 is connected to the support ring 2 via the suspension system,
The suspension system
A plurality of pendulum rods 3 each connected by spherical pendulum rod bearings, articulated throughout, to the converter vessel 1 by one end and to the support ring 2 by the other end,
As well as at least one stabilization device for limiting the movement of the converter vessel 1 with respect to the support ring 2,
The spherical pendulum rod bearing has a bolt (7) which passes through the pendulum rod (3) and is mounted in a spatially pivotable manner, each bolt (7) being the pendulum rod (3). On both sides of the support bracket 4 are supported against the converter container 1 and against the support ring 2, the bolt 7 being supported by a spherical support bracket bearing the support bracket 4. Mounted on,
The openings of the support brackets 4, which are passed by the bolts 7 and on which the spherical support bracket bearings are arranged, are covered by covers 8 at their sides facing away from the pendulum rods 3, In a tiltable converter,
For at least one of the pendulum rods 3 and these parts of the suspension system assigned thereto,
The bolt 7 is passed in the longitudinal direction by the clamping screw 9, the clamping screw 9 passes through the cover of the pair of support brackets 4 supporting the bolt 7,
A positive connection exists between the covers 8 of the pair of support brackets 4, the positive connection being provided extending over the spherical pendulum bearings and the spherical support bracket bearings. doing,
Inclined converter.
The method of claim 1,
The positive connection between the covers of the pair of support brackets 4 is above the spherical pendulum bearing and the bearing bush 10 and / or bearing inner races 11a and 11b of the spherical support bracket bearings, as well as the Over the pendulum bearing intermediate element 12 disposed between the spherical pendulum bearing and the spherical support bracket bearing and positively locked in relation to the pendulum rod bearing and in relation to the support bracket bearing, and the spherical support bracket bearing and cover. Characterized in that it extends over the support bracket bearing intermediate element 13 which is disposed between and positively locked in relation to the support bracket bearing and in relation to the cover 8,
Inclined converter.
A tiltable converter as claimed in claim 1 or 2, wherein the support bracket bearings each have a bearing inner race 11b formed by spherical segments.
The support bracket bearing intermediate element 13 is a ball race having a spherical surface facing the cover 8, which ball race is positively supported relative to the spherical surface portion of the cover 8,
A spherical surface of the bearing inner race 11b of the spherical support bracket bearing positively connected by a ball race to the cover 8,
A spherical surface of the ball race, and
A spherical surface portion of the cover 8
It is characterized in that the radius of all radiates from the same point,
Inclined converter.
The spherical pendulum rod bearing has a bearing outer race 14, wherein the bearing outer race 14 of the spherical pendulum rod bearing is fastened to the pendulum rod 3 by a retaining device 15. In the tiltable converter claimed in any one of the claims,
In the case of at least one pendulum bar 3, at least one of the pendulum bar 3 itself and / or the holding device 15 belonging thereto has at least two stop devices for limiting the rotational play of the associated pendulum bar around its longitudinal axis. Characterized in that the
Inclined converter.
The spherical pendulum rod bearing has a bearing outer race 14, wherein the bearing outer race 14 of the spherical pendulum rod bearing is fastened to the pendulum rod 3 by a retaining device 15. In the tiltable converter claimed in any one of the claims,
The retaining device 15 is sealed from the pendulum bearing intermediate element 12 by a layered sealing ring 16, the layered sealing ring 16 being arched opposite to the retaining device 15. Characterized in that it is located on the spherical surface of the intermediate element 12,
Inclined converter.

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