US2998888A - Turn-over gear for use with rolling mills and the like - Google Patents

Description

Sept. 5, 1961 T. A. G. sHlMELD 2,998,888

TURN-OVER GEAR USE WITH ROLLING MILLS AND THE LIKE Filed Nov. 22, 1957 4 Sheets-Sheet 1 1 15G 23 IE 15b 1 INVENTOR Sept 5, 1961 T. A. G. sHlMELD 2,998,888

TURN-OVER GEAR USE WITH ROLLING MILLS AND THEv LIKE Filed Nov. 22, 1957 4 Sheets-Sheet 2 Fl G. 2

24 18\ i Y' 29 i 30- f 2 "5l/1 sa 11 25 I? r if 26 Y 15a 15 i; 19 "\7 l Si i l 21 il l Scl- l i f 4 14 'I 5 CJ k/9 1o l I INVENTOR ATTORNEYS sept. 5, 1961 TURN-OVER GEAR USE WITH ROLLING MILLS AND THE LIKE Filed Nov. 22, 195'? T. A. G. SHIMELD 4 Sheets-Sheet 3 FIG.3.

25 LJL 12 26 18 N,/-9 /1O I lNvENToR ATTORNEYS Sept. 5, 1961 T. A.' G. sHlMELD 2,998,888

TURN-OVER GEAR USE WITH ROLLING MILLS AND THE LIKE 4 Sheets-Sheet 4 Filed NOV. 22, 1957 United States Patent O j l 2,998,888 TURN-OVER GEAR FOR USE WITH RGLLING MILLS AND THE LIKE Tom Alexander George Shimeld, Shemeld, England, assigner to Davy and Uniteddlngineering Company Limitedr y Filed Nov. 22,' *1957, Ser. No. `698,248 Claims priority, application Great Britain Nov. 23, 1956 3Claims. (Cl. 214-1) This invention relates to turn-up or turn-over gear for usein conjunction withva rolling mill or the like.

It is common practice in rolling mills to deliver a rolled billet, bar or structural'section on to a series of driven conveyor rollers whichk take it to. a sawing, shearing or like dividing appliance and thencefto a further seriesrof rollers from whichthe severed pieces are transferred, one by oneto a series of skid rails lying in a direction perpendicular to the vrun of the conveyor, the rails forming a bank upon which the pieces are allowed to cool. The pieces are usually transferred by a series of skid monkeys moving in tracks between the rails and each provided with a pivoted iinger so that the skid monkey is capable of moving the pieces alongv the skid rolls. in one direction, but thelinger isdepressed below the rails' as lthe monkey returns under further` sections on the rai s.

When coolingr structural shaped'. such4 as I-beams, particularlyy broad-hanged beams, which are rolled and divided with their ilangesvertical, vit is desirable to turn the beam through an angle of 90" in order to avoid damagetothe edges of the flanges.l

Various` forms of turn-over gear for rolled sections are well known in the art, but they suiier frornone or moreofi the following disadvantages.

(a) They are very cumbersome and/or costly.

(b) The turning meansmay comprise serrated iingers whichdamage the surface of the section,

(c)- The gear cannot be retracted until the section has been withdrawn longitudinally,

(d) The gear is'unreliable4 in operation,

(e) Thev gear has no provision to prevent the section turning through 180, andV (f) No knowngear is capable of operating atrthe speed' provided for in this invention.

The object of the invention is to provide a simple and reliable turn-over gear which can turn sections of relatively'largev size, e.g'. 36" x 161/2".

According to the invention, turn-up or turn-over gear for use with a rolling mill or the like and arranged to be locatedY between skid rails which receive the sections to be turned, comprisesa turning member having. at least two limbs set at' an angle, means to raise and lower the member', and guide means for the member so arranged that as the member is raised, a section on the rails and in a position to be turned is caught at the junction of said limbs, lifted clear of the rails and turned through substantially 90 of arc and as the member is lowered the section is deposited on the skid rails in its turned position. Y

The means for raising or lowering the member may stantially parallel. withtheskid rails, then. loweredland then returned toits inoperative position.

Considered from vanother aspect the turning memben *n maybe considered to have two points which are constrained vto follow predetermined paths during aturning,

operation, the sequence being such that, starting from an inoperative position, the iirst pointisraised while the member pivots about the second'point which is held sta-` tionary, thenthesecond point is raised'and simultaneously; the rst point is moved. towards the position originally occupied by thesecond point, then both points are loweredj and finally` both points are returned to their inoperaa tive positions.v Y

include a rotatable arm and a connecting rodV pivotally y connectedfb'etwe'en the member and the arm. The guide The path followed by the second point is conveniently; the arc of a circleand thev chord of the arc is approximately vertical. The iinal part of the path followed by the rst point lies under that part of the path which` the first pointfollows in. moving towards the original position occupied by thesecond point.

In order that the invention may beclearly understood andreadily carriedinto etect, one construction in accordancef therewith will now be described, by way of example, with referenceto, the accompanying drawings,l in which:

FIGURE lis anend elevation of a turn-upA gear;Y

FIGURE 2.is.v a sectionronthe line IVI-II' in FIG,- URE 1;

FIGURE: 3. shows,` a section similar to FIGURE,` 2" with certainofthefparts in different operative positions;

FIGURE 4 is. a section similar to FIGURE 2, but showing'certain ofthe, parts in yet other operativeV porsi-r tions; and j FIGURE 5. is across-section on one line V-V inv FIGURE 2 through-.a detail of the gear of FIGURES* 1 to 4; shownfon ari-enlarged scale.

'I'he turn-up gear is located in a pit between adjacentpairs of skid rails 1,.towhich arel delivered rolled I-sec.-

tions 2v to' be turned up from positions in which they Y of the pit and running. transversely to, the directions/of the skid rails 1 is-a main shaft 3 which canA be turned toeand-fro. about its Xed axis by a reversible motor (not shown). Rotatable on the shaft 3 is an armv 4'. The outer end of the arml 4 is, pivoted by means of a gudgeon pin 5 between two plates 6 forming parts of a vertical bar 7 j including, a. vertical plate 8 to which two vertical channel.sections-9aicarrying theiplates 6 are fixed'. 'Ihe bottom ofthe barv7fis shownin FIGURES l to 3 toy be resting on a metal pad 10. at-` the bottom of thepit, with an intervening,v plate.. 9 inserted precisely to define, the lower/limit of the stroke` ofl the bar. 7. The top ofthe bar 7 carriesa pair. of` plates 11 supporting a gudgeon pin 12 to.whichfone end of a turning member 13v isv pivoted. Y,

Keyed to the main shaft 3 on each side of the arm 4;, rotatable thereon, is a pair of bifurcated arrns14. These arms 14 are. of. the same length and are, pivotallyv connected: to thev lower end' of anupwardiy extending conv necting rod 15 comprising two ,upwardly extendingA parts 15a, 15bjoined by webs 16, 1 7. The two partsr 15a,"1`v5'5 are bent so that their lower ends, pivoted to the` arms 14, are wider apart than their upper ends whichY lie one on each side ofthe turning member 13 to which they are pivoted. by a gudgeon pin `18 passing through the turning member 13 and through both parts 15a, 15b' of the rod 15. Situated some distance vertically above the main shaft and parallel thereto is a. second shaft 19 f Rtented Sept. 5, 196,1.V

a, 15b of the upwardly extending rod 15. The arrangement is such that when, as shown in FIGURES l and 2, the vertical bar 7 is in its lowermost position, the arms 4, are inclined downwardly from the shafts 3, 19; thus, when the bar 7 is raised it remains-vertical although its perpendicular distance from the axis of the shafts 3, 19 varies as the bar is moved.

' The turning member 13 is L-shaped, being formed with a longer limb 23, to which the bar 7 and rod 15 are pivoted, and a shorter limb 24. At the junction between these two limbs the turning member carries a transverse horizontal shaft carrying rollers 26 at its opposite ends. When the gear is into its lowermost and inoperative position the free end of the longer limb 23 is substantially level with the top of the skid rails 1 and the longer is inclined downwardly (FIGURE 2) from its free end so that its shortertlimb 24 is completely below the level ofthe skid rails 1. j

The operation of the gear is as follows; assuming that section 2 has arrived in position above the gear, which is in its inoperative position of FIGURES l and 2, the electric motor is operated to turn the mainshaft 3 and raise the connecting rod 15. As the connecting rod 15 is raised towards the position of FIGURE 3, the lifting member 13 pivots about its connection `12 with the vertical bar 7 until the shorter limb 24 of the L is above the level of the skid rails 1. TheA rollers 26 then engage a pair of parallel horizontal guide rails 27 and thereby prevent the junction of the limbs of the L nom rising any higher. In this first stage the liftingmember 13 pivots about its connection 12 with the vertical bar 7 since the bar 7 is sufficiently heavy to keep the free end of the longer limb 23 of the L in its original position. Any tendency for the rollers 26 to move to the right is prevented by parallel guide surfaces 30.

Upon further rotation of the main shaft 3, since the rollers 26 on the lifting member 13 have coacted with the guide rails 27 and are prevented from rising further, the member 13 begins to pivot about the axis of the rollers 26. As it pivots the free end of the longer limb 23 of the L is lifted and lifts the vertical bar 7. As the vertical bar 7 is lifted the rollers 26 on the lifting member 13 move along the guide rails 27 towards the bar 7 and along a path parallel to the skid rails to the position of FIGURE 4. The vertical bar 7 is lifted until it can be lifted no further due to the guide rails 27 coacting with the rollers 26. When this state is reached the shorter limb 24 of the L is above and at a slight angle to the skid rails 1 and the longerV limb 23 of the L is at a slight angle to the vertical. t

During these iirst two stages of movement, the section 2 has been caught at the junction of the limbs of the turning member, lifted clear of the skid rails 1 and turned through substantially 90 of arc.

The electric motor driving the main'shaft 3 is now reversed and the lifting member 13 is lowered. During the first stage of lowering the angular position of the lifting member 13 remains substantially unchanged and the rollers 26 descend past parallel guide surfaces 28. The shorter limb 24 of the L is lowered below the level of the skid rails 1 and the section is deposited on the skid rails 1 in its turned position. As the bar 15 is lowered still further the rollers 26 engage parallel guide rails 29 along which they run as the member 13 returns to its irst inoperative position below the level of the skid rails 1. i It will be seen that since the lifting member in its inoperative position is below the level of the skid rails 1 the normal movement of the sections by skid monkeys will not be hindered. Thus a plurality of turn-up gears according to the invention may be situated in line across a bank of skid rails and driven in simultaneously to turn over a long length of a section. Conventional skid monkeys may he situated between each pair of turn-up gears.

By repeating the turn-up operation without using the monkeys to feed the section beyond the turn-up gear, the section, assuming the shapes of the section and the turning member to be properly related, is, of course, turned over by 180 of arc. Monkeys may, however, be used to position the section prior to the second operation.

I claim:

l. Turn-up gear arranged to be located between skid rails which receive rolled sections to be turned comprising, in combination, a turning member having first and second limbs set at an angle to one another, means having a pivotal connection with said member for raising and lowering at least part of said member past the skid rails from an initial position in which said member lies wholly beneath said skid rails to a position in which the second of said limbs projects above the skid rails, a pivot at the free end of said first limb about which said member swings upwards to cause the second limb to project above the skid rails, means operable after the operations of said raising means for causing said pivot to rise in a substantially vertical direction, and guiding the junction between said limbs to move substantially horizontally towards the vertical plane containing said pivot while said pivot is moving upwards, the section being located in the angle between said limbs by said upward swinging of said member and turned through substantially of arc by said raisingof said pivot and substantially horizontal movement of said junction, said pivot raising means including a bar carrying said pivot, and a pair of parallel arms freely pivoted respectively about two fixed axes, said bar being pivoted to said arms.

2. Turn-up gear arranged to be located between skid rails which receive rolled sections to be turned comprising, in combination, a turning member having first and second limbs set at an angle to one another, means having a pivotal connection with said member for raising and lowering at least part of said member past the skit rails from an initial position in which said member lies wholly beneath said skid rails to a position in which the second of said limbs projects above the skid rails, a pivot at the free end of said first limb about which said member swings upwards to cause the second limb to project above the skid rails, means operable after the operations of said raising means for causing said pivot to rise in a substantially vertical direction, means guiding the junction between said limbs to move substantially horizontally towards the vertical plane containing said pivot while said pivot is moving upwards, the section being located in the angle between said limbs by said upward swinging of said member and turned through substantially 90 of arc by said raising of said pivot and substantially horizontal movement of said junction, and a roller mounted on said member, said means guiding the junction between said limbs to move substantially horizontally comprising a track beneath which said roller runs, and means to exert a load on said member on the side of said pivotal connection remote from said roller, said load exerting a turning moment about said pivotal connection maintaining said roller in contact with said track.

3. Turn-up gear arranged to be located between skid rails which receive rolled sections to be turned comprising, in combination, a turning member having first and second limbs set at an angle `to one another, means having a pivotal connection with said member for raising and lowering at least part of said member past the skid rails from an initial position in which said member lies wholly beneath said skid rails to a position in which the second of said limbs projects above the skid rails, a. pivot at the free end of said first limb about which said member swings upwards to cause the second limb to project above the skid rails, means operable after the operations of said raising means for causing said pivot to rise in a substantially vertical direction, means guiding the junction between said limbs to move substantially horizontally towards the vertical plane containing said pivot in the angle between said limbs by said upward swinging of said member and turned through substantially 90 of arc by said raising of said pivot and substantially horizontal movement of said junction, and a roller mounted on said turning member, said means guiding the junction between said limbs to move substantially horizontally comprising a first track mounted substantially horizontally beneath which said roller is adapted to run, a second track beneath said first track beneath which said roller is adapted to run, and spaced guide surfaces respectively adapted to direct said roller downwards from said rst track to said second track, and upwards from said second track to said rst track, said raising and lowering means being operative to swing said turning member upwards about said pivot until said roller engages said rst track, then to swing said turning member upwards about said roller axis while said roller runs along said first track, then to lower said turning member until said roller engages said second track, and finally to permit said roller to run along said second track towards said initial position.

References Cited in the le of this patent UNITED STATES PATENTS 959,813 Stevens May 31, 1910 1,045,072 Parker Nov. 19, 19'12 1,432,007 Wyatt Oct. 17, 1922 1,888,868 Schroder Nov. 22, 1932 2,345,620 Mork Apr. 4, 1944 2,646,902 Nussberger July 29, 1953 FOREIGN PATENTS 3,224 Great Britain Feb. 14, 1894 414,791 Germany June 27, 1925

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