US3593555A

US3593555A - Handling apparatus for mill rolls

Info

Publication number: US3593555A
Application number: US746659A
Authority: US
Inventors: John A Grosko
Original assignee: United States Steel Corp
Current assignee: United States Steel Corp
Priority date: 1968-07-22
Filing date: 1968-07-22
Publication date: 1971-07-20
Anticipated expiration: 1988-07-20

Abstract

A roll-handling device for suspension from and operation by the hook of a crane hoist comprising a frame having a pair of horizontal arcuately shaped plates for supporting engagement with a circumferentially extending rib on an assembly of a bearing chock and a mill roll. Lateral movement of the assembly out of engagement with the supporting plates is prevented by a holding member in the form of a ring which is mounted on the frame for movement to an operative holding position in which it encircles the roll neck and is moved to such position by a linkage system that is operated in response to upward movement of the frame to engage said plates with said supporting rib.

Description

United States Patent IHI 3, 5

[72] inventor John A. Gnosko 3,208,260 9/!965 Sieger et al. 72/239 Whitaker, Pa. 3,323,345 6/1967 Lyle et al. 72/239 [21] Appl. No 746,659 3,425,256 2/! 969 McGoogan et all 72/239 [22] Filed July 22, i968 t Paemed y 1971 :nmary lzxalrnlilner-gR shard J. Herbst (73] Assignee United States Steel Corporation omey I Dung {54] F gg i ygg FOR MILL ROLLS ABSTRACT: A roll-handling device for suspension from and wing igs.

operation by the hook of a crane hoist compnsmg a frame 72/239, having a pair of horizontal arcuately shaped plates for sup- 29i/ 104 porting engagement with a circumferentially extending rib on [I31- an of a bearing chock and a {OIL Lateral mov- Field of Search 72/237- ment of the assembly out of engagement with the supporting 2381391261341 294/104 1 10 plates is prevented by a holding member in the form ofa ring Reerences Cited which is mounted on the frame for movement to an operative holding position in which it encircles the roll neck and is UNnED STATES PATENTS moved to such position by a linkage system that is operated in 2,473,410 6/1949 Bevevino 294/104 response to upward movement of the frame to engage said 2,752,804 7/1956 Kaiberkamp 72/239 plates with said supporting rib.

PATENTEUJULZOIQYI $593,555

4, SHEET 1 UF 4 [NI/EN TOR. JOHN A. EROS/(0 Ar rorney HANDLING APPARATUS FOR MILL ROLLS This invention relates to roll stands for slabbing mills and, more particularly, to a device for handling .mill rolls, such as vertical edging rolls, during removal and replacement in a mill or storage rack.

In slabbing mills, edging rolls are customarily provided between the horizontal roll stands to control the width of the slab. The edging rolls extend vertically and their removal and replacement both in the mill and in storage racks have involved difficult and time-consuming operations. For this purpose, the roll neck at the upper end of each roll is customarily provided with four tapped holes so that a lifting plate with an eyelet for engagement by the hook of a crane hoist may be attached thereto when handling of the roll is required for removal or replacement of the roll in the mill or a storage stand. This operation had to be performed manually and was both difficult and hazardous for the roll handler who had to climb to the top of the roll in order to attach and remove the lifting plate.

One of the principal objects of this invention is to provide a roll-handling device which eliminates the need for the customary lifting plate and the manual operations required for its attachment and removal with respect to the upper end of the roll neck.

Another object of the invention is to provide a roll-handling device which may be suspended from a crane hoist hook and operated by the mill crane to engage and support a vertical edging roll and bearing chock assembly during the handling required to effect its removal and replacement in a roll stand or storage rack.

A further object is to provide a roll-handling device of the character described in which movement thereof by the hook of a crane hoist is effective to move it into operative supporting engagement with the roll assembly. A related object isto provide such device with means operative in response to its movement into supporting engagement with the roll assembly for holding the roll assembly against lateral movement from a position supported thereon.

Other objects and advantages of the invention will become apparent from the following description.

In the drawings, there is shown a preferred embodiment of the invention. In this showing:

FIG. 1 is a side elevational view of a roll-handling device constructed in accordance with the principles of this invention and shown suspended from the hook of a crane hoist;

FIG. 2 is a side elevational view similar to FIG. 1 in which the movable parts thereof are shown in their operative rollhandling positions relative to the roll neck and bearing chock of a vertical edging roll assembly, which is shown somewhat diagrammatically;

FIG. 3 is a view of the roll-handling" device looking irl-a direction from the right of FIG. 2;

FIG. 4 is a top plan view of the roll-handling device shown in the preceding figures;

FIG. 5 is a sectional view on a larger scale taken along the line V-V of FIG. 3;

FIG. 6 is a sectional view taken along line VIVI of FIG. 5; and

FIG. 7 is a sectional view on a still larger scale taken along line VII-VII of FIG. 6.

As shown in the drawings, the roll-handling device of this invention comprises a frame F that is fabricated from steel plate by welding. At its upper end the frame has a bail B for suspension from the hook H of a crane hoist and, at its lower end, has a pair of laterally spaced members S that respectively have arcuately shaped edges on which an assembly including a vertical edging roll and its bearing chocks is supported for movement by the mill crane from one position to another. In a manner to be described, a ring R is supported on the frame F for movement to and from an operative position in which it holds the roll assembly against lateral movement from its supported position on the members S.

In FIG. 2 of the drawings, the housing 1 of a bearing chock for a vertical edging roll and a roll neck 2 projecting upwardly therefrom are illustrated somewhat diagrammatically in broken lines. As shown in this figure, the supporting plates S have supporting engagement. witharcuate portions of a circumferentially extending rib 3 that is spaced axially below the upper end 4 of the roll neck. The rib 3 forms part of the housing 1 and is otherwise employed to support the roll assembly in a roll storage rack (not shown). In its operative position, the ring R encircles the upper end 4 of the roll neck 2 and operates to hold the roll assembly against lateral movement with respect to the supporting plates S.

The frame F comprises a horizontal top plate 5, a pair of vertical sideplates 6, and a vertical back plate 7 extending between the sideplates 6. The supporting members S are welded as spandrels in the corners between the lower ends of the sideplates 6 and. the back plate 7. The upper ends of the

plates

6 and 7 abut against the under surface 8 of the top plate The bail B comprises a pair of parallel plates 9 which extend upwardly from the frame top plate 5 and form a support for a pin 10 extending transversely therebetween. The pin 10 forms a bail for engagement by the hook H'of the crane hoist'asv shown in the drawings. Gussets ll reinforce the vertical positions of the plates 9 on the horizontal plate 5.

The inwardly facing edges 12 of the supporting plates S, as viewed in FIG. 6, are arcuately shaped for supporting engagement with the circular bearing chock rib 3, which has its bottom surface undercut to providea downwardly opening recess 13 that is spaced inwardly from a ledge or hook 14 (FIG. 7) extending circumferentially around the periphery of the rib 3. For hooking engagement with the rib 3, the edges 12 of the supporting members S are machined to provide an upwardly projecting ridge 15 which have hooking engagement in the rib recesses 13. The machining operation that forms the ridge [5 also provides an upwardly facing recess 16 spaced radially inwardly from the ridge 15 in which the ledge or hook 14 at the outer edge of the rib 3 has hookingv engagement. When the bearing chock housing 1 is supported on the members S, the parts 13-16 have hooking engagement with each other, as shown in FIG. 7 of the drawings, and operate to prevent lateral movement of the roll assembly out of supporting engagement with the members S.

The two members S have their adjacent edges 17 spaced from each other to provide an opening 18 therebetween for a purpose to be described. The arcuate length of edges 12 on the members S including the space between their edges 17 is less than to provide for engagement of the edges 12with the roll assembly in a manner to be described.

A lever 19 providesa mounting for movement of the holding ring R to and from its operative holding position in which it is arranged in a horizontal plane and encircles the upper end 4 of the roll neck 2 as viewed in FIG. 5 of the drawings. The lever 19 extends through an opening 20 in the frame back plate 7 and has one end 21 thereof supported for pivotal movement on a pin 22 which has its opposite ends supported by a pair of parallel bars 23 that are welded in vertical parallel positions to the back plate 7. The bars 23 extend from the bottom surface 8 of the top plate 5 to the lower surfaces 24 of the supporting members S. The mounting of the ring R on the lever 19 is formed by a pair of bars 25 that have their inner ends 26 welded to the opposite sides of the lever l9 and their outer ends 27 welded to the upper surface of the ring R. The connection of the ring R with the lever 19 is completed by a welded connection with the underlying arcuate portion 28 of the ring R as viewed in FIG. 6. When the lever 19 is tilted to the inclined position, illustrated in broken lines as viewed in FIG. 5, the outer end 29 of the ring R is positioned above'the upper end of the roll neck 4 so that the frame F may be moved by the crane hoist to the left as viewed in FIG. 5 to a position in which the arcuate edges 12 of the supporting members 8 are positioned under the bearing chock housing rib 3 for supporting engagement therewith. After movement of the. frame to this position, and upon elevation thereof to engage the members S with the rib 3, the lever 19 is pivoted downwardly to move the holding ring R to its operative horizontal position about the upper end 4 of the roll neck. A linkage system L is provided for effecting movement of the ring R in this manner.

The linkage system L comprises a vertical bar 30 that is arranged centrally with respect to the facing edges 31 of the side bars 23. The upper end of the bar 30 is connected by a pivot pin 32 with a pair of spaced lugs 33 projecting outwardly from the end 21 of the lever 19. Movement of the bar 30 is biased downwardly by a pair of springs 34 which respectively engage with the outer ends of a horizontal bar 35 that has a welded connection at a central point thereof with the upper end of the bar 30. The upper ends of the springs 34 bear against the adjusting devices 36, which are carried by a plate 37 welded to the frame top plate and may be operated to adjust the biasing tension of the springs 34. The lower end 38 of the link 30 is connected by a pivot pin 39 with a pair of lugs 40 projecting rearwardly from a control lever 41 that is pivotally supported at a point centrally thereof by a pivot pin 42 extending between the spaced bars 23. The opposite end 43 of the lever 41 is undercut and is adapted to engage the rib 3 of the bearing chock housing for a purpose to be described. When the frame F is freely suspended from a crane hook H as shown in H0. 1, the springs 34 bias the movement of the link 30 downwardly to move the ring R and the lever 41 to the tilted position in which the end of the lever 19 abuts against the under surface 8 of the plate 5 as shown in broken lines in H6. 5.

A conically shaped roll centering and locking member 45 is provided to supplement the holding action of the ring R. The member 45 is secured to the underside of the lever 19 in a position extending downwardly therefrom and centered with respect to the ring R. When the lever 19 pivots downwardly, the member 45 enters the milled out conical opening 46 customarily provided in the roll neck to provide for centering the roll in a lathe. it helps tocenter the roll assembly in the frame F in addition to holding it against lateral movement with respect thereto.

After suspension on a crane hook, the roll-handling device of this invention may be moved by the crane operator to engage and lift a roll assembly. This is accomplished by moving the frame F to the position shown in FIG. 5 of the drawings in which the arcuate edges 12 of its supporting members S engage with the cylindrical surface 44 of the portion of the bearing chock housing under rib 3. The hook H is then elevated by the crane operator to move the supporting members S upwardly into engagement with the rib 3, and to place the parts l3-l6 in hooking engagement with each other as described above. As this upward movement of the frame F takes place, the end 43 of the operating lever 41 engages the rib 3 and pivots in a counterclockwise direction, as viewed in FIG. 5, to move the link 30 upwardly against the action of the biasing springs 34. This movement of the link 30 in turn pivots the lever 19 downwardly to move the ring R to its operative horizontal position encircling the upper end 4 of the roll neck 2. In this position of the ring R, the roll neck 2 is held against lateral movement, and the parts 13-16 are thus held against relative movement out of hooking engagement with each other as shown in FIG. 7 of the drawings. Attention is particularly directed to the fact that operation of the roll-handling device of this invention to lift and transport a vertical edging roll is effected entirely by the operator of the mill crane, and that the required operations for this purpose as described above can be performed without the necessity of manually attaching a lifting plate and eyelet to the upper end of the roll neck.

Although the above discloses a preferred embodiment for handling edging rolls in slabbing mills, it will be understood that the lifting apparatus of this invention is applicable for handling other rolls, and that other adaptations and modifications may be made without departing from the scope of the appended claims.

I claim: 1. A handling device for a vertical roll of the type having an position in holding engagement with said roll neck, said roll neck having a conically shaped recess in its said upper end and said holding member comprising a conically shaped member movable to and from a position seated in said rollneck recess.

2. ln apparatus for handling a vertical bearing chock and roll assembly for an edge-rolling stand in a slabbing mill, said assembly being of the type having an upwardly projecting roll neck and a circumferentially extending rib below the upper end of said roll neck, the combination comprising a supporting frame, a pair of laterally spaced supporting members at the base of said frame, each of said members having a curved edge for supporting engagement under said rib, a ring adapted to occupy an operative position arranged concentrically about said roll neck for holding said assembly against movement out of a position supported on said frame with said rib engaged with said curved edges, means mounting said ring for movement on said frame from an inoperative position above the end of said roll neck downwardly to its said operative position, means for moving said frame upwardly to engage said curved edges with said rib, and means responsive to said upward movement of said frame for lowering said holding ring from its said inoperative position to its said operative position.

3. In apparatus for handling a vertical bearing chock and roll assembly for an edge-rolling stand in a slabbing mill, said assembly being of the type having an upwardly projecting roll neck and a circumferentially extending rib below the upper end of said roll neck, the combination comprising a supporting frame, a supporting member at the base of said frame and having a curved edge for supporting engagement under said rib, a ring adapted to occupy an operative position arranged concentrically about said roll neck for holding said assembly against movement out of a position supported on said frame with said rib engaged with said curved edge, means mounting said ring for movement on said frame from an inoperative position above the end of said roll neck downwardly to its said operative position, means for moving said frame upwardly to engage said curved edge with said rib, and means responsive to said upward movement of said frame for lowering said holding ring from its said inoperative position to its said operative position.

4. A roll-handling device as defined in claim 1 characterized by said frame being adapted for upward movement by a crane hook to engage said base member with said rib, and means responsive to upward movement of said base member into supporting engagement with said rib for moving said holding member to its said operative roll neck encircling position.

5. Handling apparatus as defined in claim 2 characterized by said frame-moving means comprising a bail at the upper I end of said frame for suspension on the hook of a crane hoist.

6. Handling apparatus as defined in claim 2 characterized by said ring-lowering means comprising a lever pivoted on said frame and projecting through the space between said supporting members for engaging said rib upon upward movement of said frame relative thereto, and a linkage system operated by said lever for actuating said ring-mounting means to lower said ring to its said operative position, said ring-mounting means including an arm pivotally supported on said frame and means securing said ring to said arm for pivotal movement therewith.

7. Handling apparatus as defined in claim 6 characterized by means biasing said linkage system for movement of said ring to its said inoperative position.

Claims

1. A handling device for a vertical roll of the type having an upwardly projecting roll neck and a circumferentially extending and downwardly facing rib spaced axially below the upper end of said roll neck comprising, a base member for supporting engagement with said rib, a frame extending upwardly from said base member, a member supported on said frame for holding engagement with said roll neck to restrain said roll against lateral movement and disengagement of said rib with said supporting member, and means mounting said holding member on said frame for movement to and from an operative position in holding engagement with said roll neck, said roll neck having a conically shaped recess in its said upper end and said holding member comprising a conically shaped member movable to and from a position seated in said roll neck recess.

2. In apparatus for handling a vertical bearing chock and roll assembly for an edge-rolling stand in a slabbing mill, said assembly being of the type having an upwardly projecting roll neck and a circumferentially extending rib below the upper end of said roll neck, the combination comprising a supporting frame, a pair of laterally spaced supporting members at the base of said frame, each of said members having a curved edge for supporting engagement under said rib, a ring adapted to occupy an operative position arranged concentrically about said roll neck for holding said assembly against movement out of a position supported on said frame with said rib engaged with said curved edges, means mounting said ring for movement on said frame from an inoperative position above the end of said roll neck downwardly to its said operative position, means for moving said frame upwardly to engage said curved edges with said rib, and means responsive to said upward movement of said frame for lowering said holding ring from its said inoperative position to its said operative position.

5. Handling apparatus as defined in claim 2 characterized by said frame-moving means comprising a bail at the upper end of said frame for suspension on the hook of a crane hoist.