DEVICE COMPRISING A HOUSING AND A ROTARY ELEMENT MOUNTED IN THE HOUSING SUCH THAT IT CAN BE ROTATED AND AXIALLY SHIFTED

Abstract

A device having a housing (2) and a rotary element (4) mounted in the housing (2) such that it can be rotated and axially shifted (14). In order to reduce bearing loads in the rotary element (4), with eccentric loading of the rotary element (4), the device provides at least one first support surface (6) on an end side (8) of the rotary element (4) and a second support surface (10) axially, opposite (40) the first support surface (6) on the housing (2). The rotary element (4) is then mounted in the housing (2) in such a way that, with the impact of an axial force (12) on the rotary element (4), the axial shiftability (14) of the rotary element (4) is limited by the support (16) of the first support surface (6) on the second support surface (10).

Claims

1. A device comprising a housing and a rotary element mounted in the housing such that the rotary element can be rotated and axially shifted; at least one first support face on an end face of the rotary element and a second support face axially opposite the first support face on the housing; wherein the rotary element is mounted in the housing such that, under the effect of an axial force on the rotary element, the axial shiftability of the rotary element is limited by the contact of the first support face on the second support face; a wearing element for lateral guidance of a metal strip is arranged on the rotary element and wherein the rotary element is connected to a gear mechanism, and/or is a component of a gear wheel of a mechanical gear, and/or is a gear wheel of a mechanical gear.

2. The device as claimed in claim 1, further comprising the mechanical gear is a form-fit or force-fit or friction-fit or electrical gear.

3. The device as claimed in claim 1, wherein the rotary element is a worm wheel.

4. The device as claimed in claim 1, wherein the rotary element is mounted in the housing by means of at least one bearing bush.

5. The device as claimed in claim 5, wherein the wearing element is a wearing disc which is arranged on the rotary element, is fixed to the rotary element or is formed integrally with the rotary element.

6. The device as claimed in claim 1, wherein the first support face is formed to be substantially annular or substantially circular.

7. The device as claimed in claim 1, wherein the rotary element is mounted in the housing such that a planar contact is formed at a support contact between the first support face and the second support face.

8. An apparatus for lateral guidance of a metal strip for a roller table portion in a rolling mill, wherein at least one device claimed in claim 1.

9. The apparatus for lateral guidance of a metal strip as claimed in claim 1, further comprising a gear beam on which the device is attached.

10. The apparatus for lateral guidance of a metal strip as claimed in claim 8 further comprising adjustment means which is at least in force-fit connection with the rotary element, whereby on actuation of the adjustment means, the rotary element, is rotatable simultaneously and/or in synchrony.

11. The apparatus for lateral guidance of a metal strip as claimed in claim 10, further comprising the adjustment means comprises a worm and the rotary element comprised a worm wheel.

12. (canceled)

13. A roller table portion for a rolling mill, at a coiler inlet in a hot strip mill, and comprising rolls for transporting a rolled product, comprising an apparatus for lateral guidance of a metal strip as claimed in claim 8, for lateral guidance of rolled product, transported by the rolls.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0059] FIG. 1 shows a side guide with rotatable wearing discs (Eco Slide Disc) at a coiler inlet in a hot strip mill;

[0060] FIG. 2 shows a worm gear for actuation/rotation of a wearing disc (Eco Slide Disc).

DETAILED DESCRIPTION OF EMBODIMENTS

[0061] FIG. 1 shows a part of a side guide 38 or a guide rule/gib 38 at a coiler inlet 34 of a coiler device in a hot strip mill 28.

[0062] The hot strip 24 is supplied to a coiler in the transport direction 42 over a substantially horizontally oriented roller table 26 at the coiler inlet 34.

[0063] As FIG. 1 shows, in the side guide 38 or guide rule/gib 38 of the coiler inlet 34, referred to below in brief as the coiler gib 34, several wearing elements 22 in the form of rotatable round wearing discs 22 which are arranged in a row along the roller table/portion 26 of the coiler inlet 34, the respective end/base face 44 of which, visible in FIG. 1 forms the wearing face 44 of the respective wearing element 22 or wearing disc 22.

[0064] The wearing discs 22, as also shown in FIG. 1, are arranged vertically in respective largely round recesses 46 of the coiler gib 38, and approximately parallel to/with the coiler gib 38 or parallel to its side face 48 facing the roller table 26.

[0065] Thus along the coiler gib 38, an approximately flat, Depending on wear state, vertically oriented guide plane 50 is provided at the coiler gib 38 for the hot strip 24 transported on the roller table/portion 26 and to be guided; the roller table/portion 26 is oriented substantially horizontally, perpendicularly thereto.

[0066] The substantially vertically oriented parallel to the guide plane 50 wearing discs 22 each have a central rotational axis 52, and about that axis 52, the respective wearing disc 22 is rotatable under control by means of a worm gear 18 into defined rotational Positions (see FIG. 2), whereby it is also guaranteed that the guide plane 50 is retained in all rotational positions of the wearing discs 22.

[0067] The hot strip 24 transported horizontally over rolls 36 of the roller table 26 can thus always be securely laterally guided by means of these wearing discs.

[0068] FIG. 2 shows in detail the arrangement of a rotatable wearing disc 22 in the coiler gib 38, as an example of one of the several wearing discs 22 which are rotatable by means of the worm gear 18 of the coiler gib 38.

[0069] As FIG. 2 shows, the wearing disc 22 sits, centered via a centering seat 54, on a worm wheel 4 of “its worm gear” 18; wherein the worm wheel 4 is received/mounted in a worm housing 2 which is itself part of a gear beam 56, again forming part of the coiler gib 38.

[0070] For mounting of the worm wheel 4, a shaft 58 is integrated in and integral with the worm wheel 4. The shaft 58 or worm wheel 4 is mounted in the worm housing 2 or gear beam 56 by means of two bearing bushes 20 sitting on shaft extensions 60.

[0071] On the outer periphery 62 of the worm wheel 4, there is the toothing 64 which is in engagement 32 with the worm 30 or its toothing 66.

[0072] By means of such a worm gear 18 or this worm 30, the worm wheel can thus rotate into defined rotational positions under control.

[0073] The worm 30 is here configured as a “long” spindle comprising the worm toothing 66 and arranged substantially parallel to the coiler gib 38, for example oriented extending along its length, wherein it “passes through” the worm housing 2 of the several worm gears 18, thereby standing not only in engagement 32 with the shown worm wheel 4 of the illustrated worm gear 18, but in engagement 32 with several worm wheels 4 arranged in line along the coiler gib 38.

[0074] Thus on actuation of the one worm 30, the several worm wheels 4 can be rotated into defined, desired rotational positions in synchrony/simultaneously.

[0075] As FIG. 2 further shows, on its end face 8 facing away from the roller table 26, the worm wheel 4 forms a radially external, annular, flat first support face 6 which is oriented perpendicularly to the rotational axis 52 of the worm wheel 4.

[0076] Axially opposite 40 this annular support face 6 on the worm wheel 4, a corresponding second support face 10, oriented parallel therewith, is formed on the worm housing wall 68 of the worm housing 2.

[0077] At its end face 70 facing the roller table 22, the worm wheel 4 forms a further end face 72, which in this case for example is flat and is oriented perpendicularly to the rotational axis 52 of the worm wheel 4, and opposite which is a corresponding further worm housing wall/face 72 oriented parallel therewith.

[0078] The worm wheel 4 is then received in the worm housing 2, with its first end-side support face 6 firstly and its further support face 72 secondly in “pincer-like” engagement between the second support face 10 of the worm housing 2 on one side and the further worm housing wall face 74 on the worm housing 2 on the other—such that a definable axial play 74 is formed in the “pincers” or “in-between”.

[0079] In other words, the worm wheel 4 is axially shiftable to a defined maximum inside the “pincers” because of the limitation by the second support face 10 of the worm housing 2 here the axial shift 14 of the first support face 6 on the worm wheel 4 is limited and by the further worm housing wall face 74 of the worm housing 2 here the axial shift 14 of the further end face 72 on the worm wheel 4 is limited.

[0080] The other plays within the worm gear 18, i.e. the play of the worm wheel mounting 78 and the play 80 of the worm 30/worm wheel 4, are matched precisely to this or are greater.

[0081] Accordingly, under axial loads 12 on the wearing disc 22, the axial shiftability 14 of the worm wheel 4 away from the roller table 26 is limited by the axial play 76 of the worm wheel 4 relative to the worm housing 2, which is achieved or permitted in the worm gear 18 as the axial distance between the first end-side support face 6 on the rotary element 4 and the second axially opposite 40 support face 10 on the worm housing 2.

[0082] If then, as illustrated in FIG. 2, an eccentric axial load 12 acts on the wearing disc 22 and hence on the worm wheel 4, the worm wheel 4 can or does shift axially 14 away from the roller table 26 until the first support face 6 on the worm wheel 4 contacts 16 the second support face 10 on the worm housing 2, and thus the first support face 6 on the worm wheel 4 and the second support face 10 on the worm housing are in mutual support 16. The worm wheel 4 thus receives an axial support 16 and also a support 16 against tilting.

[0083] In other words, the first end-side support face 6 of the worm wheel 4 is supported 16 under axial load 12 and axial shift 14 on the second axially opposite 40 worm housing support face 10.

[0084] This direct support of the worm wheel 4 via the support faces 6, 10 in the worm housing 2 relieves the load on the bearing of the worm wheel 4, i.e. the bearing bushes 20.

[0085] In particular in the case of loads 12 acting eccentrically on the wearing disc 22 and hence on the worm wheel 4, as FIG. 2, shows both the axial force 82 and tilt moment 84, which lead not only to axial load 82 but also to tilt moments 84 in the worm wheel 4. In the worm gear 18, the bearing forces and/or bearing moments on the bearing bushes 20 are limited or reduced, i.e., the force is received/absorbed/dissipated through the direct support face contact 16.

[0086] Although the invention has been illustrated and described in detail by the preferred exemplary embodiment(s), the invention is not restricted by the disclosed example(s) and other variations may be derived therefrom without leaving the scope of protection of the invention.

List of Reference Signs

[0087] 2 Housing, worm housing

[0088] 4 Rotary element, gear wheel, worm wheel

[0089] 6 First support face

[0090] 8 End face

[0091] 10 Second support face

[0092] 12 Axial force/load

[0093] 14 Axial shiftability/shift

[0094] 16 Support, support contact

[0095] 18 (Worm) gear

[0096] 20 Bearing bush

[0097] 22 Wear element, wearing disc

[0098] 24 Rolled product, metal strip, hot strip

[0099] 26 Roller table/portion

[0100] 28 Rolling mill, hot strip mill

[0101] 30 Adjustment means, worm

[0102] 32 Force-fit connection, (toothed) engagement

[0103] 34 Coiler inlet

[0104] 36 Rolls

[0105] 38 Lateral guidance, side guide, guide rule, (coiler) gib

[0106] 40 Axially opposite

[0107] 42 Transport direction

[0108] 44 End/base face, wearing face

[0109] 46 Recess

[0110] 48 Side face

[0111] 50 Guide plane

[0112] 52 Rotational axis

[0113] 54 Centering seat

[0114] 56 Gear beam

[0115] 58 Shaft

[0116] 60 Shaft extension

[0117] 62 Outer periphery

[0118] 64 Toothing (worm wheel)

[0119] 66 Toothing (worm)

[0120] 68 Worm housing wall

[0121] 70 End face

[0122] 72 Further end face

[0123] 74 Further worm housing wall/face

[0124] 76 Axial play

[0125] 78 Play of worm wheel mounting

[0126] 80 Play of worm/worm wheel or tooth engagement

[0127] 82 Axial force, axial load

[0128] 84 Tilt moment