DE7335568U - Bearing that absorbs angular or drum movements for a tiltable converter - Google Patents

Description

Patent attorney
Dipl.-Ing. G. SCHLIEBS
DARMSTADT
Claudiusweg 17A

To the

German Patent Office

Munich 2

Zweibrückenstrasse Ί2

ü99

28.

Re: utility model registration

Applicant: United Austrian Iron and

Steelworks - Alpine Montan Aktiengesellschaft in Vienna, Austria

Angular or Taume! Movements absorbing bearing for a tiltable converter

The innovation concerns a bearing that absorbs angular or wobbling movements, e.g. sliding-joint or roller bearings, for a tiltable converter, the bearing being fixed in position by spacer rings attached to the support pins of the converter and is enclosed by a housing with a seal.

Converter bearings that can accommodate load capacities of over 1000 t, are exposed to the effects of heat and dust and also absorb wobbling movements due to the misalignment of the trunnions must require special constructive care, especially with regard to the sealing of the Interior of the bearing against the ingress of foreign bodies.

According to Austrian patent specification No. 2-3,808 a pin seal is known which has a sealing cord which surrounds the pin and is inserted into a groove. The groove is made from two profile rings that are pulled axially against each other formed, these profile rings together with the sealing cord in the radial direction within an annular Recess of the bearing housing or a bearing cover

7335563-7.2.74

are slidable, so that> even with a wobbling movement of the Support pin the sealing effect remains. Although the considerations are correct, of those in this design has been assumed, the operating practice has shown that the service life of the seal is not satisfactory is long. If the pin is inclined, the sealing cord is tightened by the radia.le sliding movement in the Bearing housing badly deformed. The sealing material is stressed beyond its elastic limit bzv /. its elasticity is gradually lost. Over time there is an "open" of the warehouse interior. Then penetrating dirt, solid particles of slag, iron and the like destroy the bearing in a short time and the converter operation will be interrupted. The replacement of a heavy converter bearing is extremely expensive.

The task of the innovation is to avoid these disadvantages and difficulties and to create a bearing construction, in which plastic or rubber seals can be dispensed with at all, i.e. a seal too try that by angle or respectively. Wobbling movements of the trunnion does not become inoperable.

This object is achieved in the initially defined bearing in that between the bearing housing and the Spacer rings two inserted into recesses of the spacer rings with play and enclosing them at a distance Sleeves are provided, which sleeves have at least one inwardly projecting into a corresponding recess of the spacer rings with play engaging, flange-shaped Have approach, wherein the side surfaces of the flange-shaped approach and the corresponding Aus

7335563-7.2.74

perception as spherical surfaces with a common in which Center of the bearing lying center point are formed and the space between the sleeves with the approach and the Ice punch rings with the recesses is filled with a pasty sealant, e.g. bearing grease.

Appropriately, hang the sleeves with the side Housing parts each in one piece (integrally) together.

A channel advantageously opens on the inner wall of the sleeves for supplying a paste-like sealant.

Details of the innovation are shown in an exemplary embodiment explained in the accompanying drawing. Fig. I shows an overall side view of a converter with its Bearings, FIG. 2 shows a longitudinal section through the upper part of the bearing according to the innovation and FIG. 3 shows a detail thereof in enlarged scale.

In Fig. 1, 1 denotes a converter which is surrounded by a support ring 2 and is tiltably mounted in a floating bearing 5 and a fixed bearing 6 ^{by means of the support pins 3 »1 I.} The center points of the floating bearing 5 and the fixed bearing 6, through which the trunnion axis 7 also runs, are denoted by _{M 1 and Mp.} Due to thermal effects, the trunnions 3, 4 can be inclined; Such skewed axes are ^{denoted by 8 or 8 1} , the deviation OC from the axis being approximately + ^ 1.

In order for a misalignment of the trunnion 3 to the Angle _ + O <, i.e. with a tumbling movement, no leakage arises in the fixed bearing 6, one shown in FIG

and 3 Lsgcrkcnstrukticn vsr.iondct shown in simplified form; for a better overview is in Pig. 2 only the upper part of the plague camp in a vertical section and in FIG. 3 a detail from the right upper part of FIG . drawn.

The fixed bearing 6 consists essentially of a sliding joint or roller bearing 95 which is enclosed by a housing cover IO releasably connected to the bearing foot, not shown, and is fixed in position by two two-part spacer rings 11, 11 'and 12, 12'; these spacer rings are attached to the support pin 3 on both sides of the sliding joint or roller bearing 9. The two-part design of the spacer rings in the axial direction is chosen because of the simpler and easier production and assembly. M- ^; 3> I ¹ * each spacer ring 11, 11 'and 12, 12' enclosing sleeves are designated, which are attached to housing covers 15, 16; In the case of a fixed bearing, as shown in FIG. 2, the sleeves 13, I ^ with the housing covers 15, 16 can each form integral components. The housing covers 15, 16 are attached to the side of the housing cover 10.

As can be seen in detail from Fig. 3, the cover part 16 or the sleeve I ^ is inserted in a recess 17 of the spacer ring 12, 12 'with a lateral play a and a radial distance b. It has flange-shaped projections 18, 19, the side surfaces of which are nail surfaces with the radii R., R ₂ , R ^, the common center point of which lies in the center Mp of the bearing 9. These flange-shaped projections 18, 19 engage in corresponding recesses 20, 21 of the spacer ring 12, 12 ', the side surfaces of these recesses 20, 21 also being spherical surfaces with radii R ₁ ', R- ', R, ¹ , their common center in the middle M “des

Bearing 9 lies, in the same way the cover part 15 and the sleeve 15 are on the GegonünerlÄor ;:: · ΰ ·: · π 3;. ·. "■!, <· ■ <· ■ ·.:;.! Lag · '· IV. Auogobi.id- I : i'-L ·' b.:-;;l ^ zjii el ·:: - "-. '. K.:; i'.l: in;: c:, i'.r; :: ir '■ lugs 18, 19, which engage in corresponding recesses in the spacer rings 11, 11 and are designed with spherical surfaces, the center of which coincides with the center M

C.

of the camp collapses. Since R ₁ is slightly larger than R, T is πIs u "'or R ^ is slightly larger than Rp ¹ or R, is slightly larger than R., the hint]. + _ & * the pin 3 with such spacer rings 11, 11 'and 12, 12' can move relative to the sleeves 13, 14, with the size of ?> -. the game a and the distance b_ are dimensioned so large that contact between the spacer ring ^ .η 11, II ¹ or 12, 12 'and the sleeves 13, l't is avoided. A feed channel for a pasty sealant, for example bearing grease, is designated by 22, which opens out on the inner wall of the sleeve 1 * 1, so that the bearing grease is introduced into the space ? J> between the spacer ring 12, 12 'and the sleeve 1 * 4 been kai.n. The bearing grease is conveyed in the direction of the arrows, on the one hand, into the interior of the bearing and, on the other hand, against the direction in which dirt and other solids penetrate to the outside. The arrangement of the flange-shaped approaches, which, as described, engage in recesses with little play, creates a labyrinth seal. the sealing effect of which is fully retained even with a wobbling movement of the support pin 3; there is only a shift or displacement of the grease cushion, which makes it necessary to supplement the escaping grease in some cases. In order to ensure that there is always a sufficient amount of lubricant, the distance b_ should be kept as large as possible; So b should be bigger

as a_. The labyrinth seal prevents solids from penetrating into the interior of the bearing even if the space 23 should only be partially filled with grease; it therefore also works under extreme operating conditions.

The innovation described can in principle also be used for a floating bearing, that is to say for a trunnion bearing 5 according to FIG. 1, in which the sliding-gel.'ik or roller bearing is axially displaceable within the bearing housing by means of a sliding sleeve. In this case, the sleeves 13, 1Ί are designed as independent components that are axially displaceable with respect to the housing covers 15, 16, and seals made of plastic or rubber are provided between them.

Claims (3)

Protection claims 1. Angular or wobbling movements in the receiving bearing, 2..B. Sliding-joint or roller bearing for a tiltable converter, the bearing being fixed in position by spacer rings attached to the support pin of the converter and enclosed by a housing with a seal, characterized in that between the bearing housing (10, 15, 16) and the spacer rings ( 11, II ¹ ; 12, 12 ') two in recesses (17) of the spacer rings (11, 11'j 12, 12') inserted with clearance (a) and these sleeves (13, 14) enclosing them at a distance (b) are provided, which sleeves (13, 14) at least one inwardly projecting, in a / corresponding recess (20, 21) of the spacer rings (11, 11 '; 12, 12') engaging with play, flange-shaped shoulder (18, 19) have, wherein the side surfaces of the flange-shaped projection (18, 19) and the corresponding recess (20, 21) are designed as spherical surfaces with a common center (M) located in the middle of the bearing (9) and the space (23) between the sleeves (13, 14) with the extension (18, 19) and the spacer rings '(11, 11'; 12, 12 ') with the recesses (17, 20, 21) is filled with a pasty sealant, for example bearing grease. 2. Bearing according to claim 1, characterized in that the sleeves (13, 14) with the lateral housing parts (15, 16) each in one piece (integrally). 3. Bearing according to claim 1, characterized in that a channel (22) for supplying a pasty sealant opens _{on the inner wall of the sleeves (13 S 14).}