A kind of vertical tandem mill drawn-back device
Technical field
The utility model relates to the rolling mill equipment of metallurgy industry, refers in particular to the drawn-back device that is used for vertical tandem rolling unit integral replacing.
Background technology
Rolling mill is the capital equipment of metallurgy industry mill, and vertical tandem mill is common rolling mill.In suitability for industrialized production, when product specification changes, must in time adjust rolling mill and hole shape thereof, that the rolling mill integral replacing has is time saving and energy saving, characteristics conveniently, is subjected to the welcome of Metallurgical Enterprise.
As everyone knows, be placed in the vertical tandem mill 13 on the production line, there are gear-box 12 permanent plants such as grade its top, position, and driving can not directly be lifted up into tandem mill 13 and be hung out.If implement the integral replacing of tandem mill 13, with driving tandem mill 13 integral body are hung out, must remove the barrier (gear-box 12 permanent plants such as grade) of tandem mill 13 top positions, two kinds of methods are arranged in theory: (1) removes gear-box 12 permanent plants such as (being fixed on support 14 tops) of tandem mill 13 top positions; (2) tandem mill 13 certain distances are moved on the plane, make tandem mill 13 top positions not have barrier.Obvious (2) kind method is even better, also meets to produce reality.
Utilizing sliding machine 3 planes to shift out tandem mill 13 is a kind of common methods, relatively be typically the drawn-back device that German MDS company is used for the vertical tandem mill of integral replacing: comprise the dolly, the piston rod that slide along track, an end that is characterized in being placed on the sliding machine 3 of vertical tandem mill 13 belows has a metal hook, there is a clamping plate type hook on the top of oil cylinder piston bar 11, dolly hook and clamping plate type hook negative and positive coupling, the push rod that is fixed on ground is placed near unhook place.When needs are changed milling train: at first oil cylinder piston bar 11 elongations, piston rod 11 tops contact with the metal hook of sliding machine 3, piston rod 11 continues elongation, the tandem mill first that promotes on sliding machine 3 and the sliding machine 3 shifts out the rolling line position, make the tandem mill first arrive clear place, top position, directly the tandem mill first is hung out with driving, tandem mill second is placed on the sliding machine 3; Secondly manually the dolly hook is connected with the clamping plate type hook on piston rod 11 tops; Shrink piston rod 11 then, tandem mill second on sliding machine 3 and the sliding machine 3 is drawn into the rolling line position, in the time just will putting in place, push rod backs down contact along the inclined-plane of clamping plate type hook Side face, fashionablely gradually clamping plate type hook is backed down pulling on, make its unhook, this moment, tandem mill second installed surface just in time contacted with support 14, and piston rod 11 continues to shrink and set back; Under the lift effect, hole shape is changed in the rise and fall of tandem mill second at last.The weak point of this technology is the poor reliability that breaks off relations, and the location is inaccurate: push rod is regulated length a bit, just breaks off relations too early when tandem mill 13 puts in place; Push rod regulate short a bit, tandem mill 13 also broke off relations when moving to, handled very difficult.When serious the phenomenon that do not break off relations thought by mistake and break off relations, in case implement the operation of tandem mill 13 rise and fall, will cause the flexural deformation accident of piston rod 11, influence production.
Summary of the invention
The vertical tandem mill drawn-back device of the utility model design, it adopts " holding claw shape " structure to replace " hook-type " structure, make being connected and shirking operation of sliding machine 3 and oil cylinder piston bar 11, accurately, reliably, safety, convenience, the original difficulty that breaks off relations, the inaccurate problem in location have been solved, stopped the maloperation of " thinking the phenomenon that breaks off relations by mistake ", avoided the damage accident of piston rod 11, satisfied the requirement of vertical tandem mill integral replacing not breaking off relations.
The utility model provides a kind of vertical tandem mill drawn-back device, comprise sliding machine 3, piston rod 11, it is characterized in that: the coupling block 6, holding claw 10 integral body that fixedly fuse with bearing pin 7 are " cuboid of head band circular hole ", circular hole size and piston rod 11 " ball-shaped end " coupling; A pair of " arc " metal holding claw 10 usefulness bearing pins 7 are fixed on coupling block 6 head both sides, and two medial surfaces of holding claw 10 have an aperture that mates with spring 8 sizes respectively; Thickness greater than metal shaft 4 sectional dimensions, width greater than dolly before " bulk " coupling blocks 6 of horizontal Beam 5 cylindrical hole sectional dimensions be placed in the inside casing passage of metal backup plate 9, the afterbody of coupling block 6 is fixedlyed connected with metal shaft 4, there are two pin shaft holes that holding claw 10 is installed at the middle part, there is the aperture of a mounting spring 8 side of head center protuberance, and the size of coupling block 6 apertures, position and holding claw 10 medial surface apertures match; Length is longer than sliding machine 3 " post shapes " metal shaft 4 slightly and is placed in behind horizontal Beam 5 cylindrical holes before the dolly, the dolly in horizontal Beam 2 cylindrical holes, metal shaft 4 tops are fixed on coupling block 6 afterbody centers, horizontal Beam 2 " convex form " cylindrical hole size coupling and groove is arranged behind tail end protuberance and the dolly; The sliding machine 3 that slides along track is rectangle metal frameworks, metal framework size and tandem mill 13 couplings that are placed on the metal framework; There is a cylindrical hole at horizontal Beam 5 centers before the dolly, and the cylindrical hole size is slightly larger than metal shaft 4 cross sectional dimensions, are convenient to metal shaft 4 and move in cylindrical hole; With horizontal Beam 2 behind horizontal Beam 5 is arranged in parallel before the dolly the dolly, its newel shape hole is " the less convex form of bigger, the interior Side of outer Side ", and the less cylindrical hole of interior Side is identical with horizontal Beam 5 center cylindricality hole dimensions before the dolly; Be fixed on the inside casing passage that the metal backup plate 9 in the horizontal Beam 5 cylindrical holes outside before the dolly surrounds and mate with coupling block 6 sizes, be convenient to coupling block 6 and move along the inside casing passage of metal backup plate 9, channel rear portion is the cuboid of a length L, L
1<L≤(L
1+ L
2), L
1Be the maximum moving distance of coupling block 6, L
2Be the distances of coupling block 6 pin shaft holes to afterbody, open along the inclined-plane, both sides the passage front portion; Metal bolt 1 is fixed on the horizontal Beam 2 cylindrical holes outside behind the dolly, mates with metal shaft 4 afterbody grooves; Spring 8 is placed in the coupling block 6 head apertures, and two ends withstand on respectively in two medial surface apertures of holding claw 10, and holding claw 10 can be opened on the inclined-plane of backup plate 9 inside casings, unclamps piston rod 11; The piston rod 11 that links to each other with oil cylinder, head is " ball shape ", and " ball-shaped end " of piston rod 11 mated with the circular hole size that holding claw 10, coupling block 6 heads surround; Above-mentioned in conjunction with constituting the utility model.
Post shapes metal shaft 4 cross sections adopt circular, square, and are preferably circular.
Coupling block 6 afterbody centers are adopted with the fixed form on metal shaft 4 tops and are threaded.
The inside casing passage that metal backup plate 9 surrounds, the opening angle α on the anterior inclined-plane of its passage=10~45 degree.
Compared with prior art, the utlity model has following advantage:
(1) reasonable in design, simple in structure.
(2) installation is easy, easy to maintenance.
(3) being connected of sliding machine and oil cylinder piston bar, unhook are safe and reliable.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is that the utility model coupling block moves schematic diagram along the metal backup plate
Fig. 3 is a fixedly schematic diagram of the utility model latch
Fig. 4 is the vertical tandem mill integral replacing of a utility model schematic diagram
Specific embodiments
Steel rolling subsidiary factory of Shanghai iron company implements the rolling mill integral replacing that the utility model is used to adjust rolling mill and hole shape thereof.It is characterized in that: the coupling block 6, holding claw 10 integral body that fixedly fuse with bearing pin 7 are " cuboid of head band circular hole ", circular hole (diameter 80mm) size and piston rod 11 " ball-shaped end " (diameter 78mm) coupling; A pair of " arc " metal holding claw 10 usefulness bearing pins 7 are fixed on coupling block 6 head both sides, and two medial surfaces of holding claw 10 have an aperture (diameter 30mm) that mates with spring 8 sizes respectively; Thickness (116mm) is greater than metal shaft 4 sectional dimensions, width (150mm) " bulk " coupling block 6 greater than horizontal Beam 5 cylindrical hole sectional dimensions before the dolly, be placed in the inside casing passage of metal backup plate 9, the afterbody of coupling block 6 is threaded with metal shaft 4 tops, there are two pin shaft holes that holding claw 10 is installed at the middle part, there is the aperture (diameter 30mm) of a mounting spring 8 side of head center protuberance, and the size of coupling block 6 apertures, position and holding claw 10 medial surface apertures match; Be longer than " cylindrical " metal shaft 4 (length 1045mm, diameter 63mm) of sliding machine 3 (dolly length 990mm) slightly, be placed in behind horizontal Beam 5 cylindrical holes before the dolly, the dolly in horizontal Beam 2 cylindrical holes horizontal Beam 2 " convex form " cylindrical hole size coupling and groove is arranged behind tail end protuberance (diameter 83mm) and the dolly; The sliding machine 3 that slides along track is rectangle metal frameworks, metal framework size and tandem mill 13 couplings that are placed on the metal framework; There is a cylindrical hole (diameter 65mm) at horizontal Beam 5 centers before the dolly, are convenient to metal shaft 4 and move in cylindrical hole; With horizontal Beam 2 behind horizontal Beam 5 is arranged in parallel before the dolly the dolly, its center cylindrical hole is " outer Side is the convex form of big (diameter 85mm), interior Side less (diameter 65mm) "; Being fixed on the inside casing passage that the metal backup plate 9 in the horizontal Beam 5 cylindrical holes outside before the dolly surrounds mates with coupling block 6 sizes, being convenient to coupling block 6 moves along the inside casing passage of metal backup plate 9, channel rear portion is an a cuboid (length L=205mm), L1<L≤(L1+L2), the distance L 2=70mm of the maximum moving distance L1=150mm pin shaft hole of coupling block 6 and coupling block 6 afterbodys, open along the inclined-plane, both sides the passage front portion, opening angle α=25 degree; Metal bolt 1 is fixed on the horizontal Beam 2 cylindrical holes outside behind the dolly, mates with metal shaft 4 afterbody grooves; Spring 8 (diameter 28mm) is placed in the coupling block 6 head apertures, and two ends withstand on respectively in two medial surface apertures of holding claw 10, and holding claw 10 can be opened on the inclined-plane of backup plate 9 inside casings, unclamps piston rod 11; Piston rod 11 heads that link to each other with oil cylinder are " ball shape ", and " ball-shaped end " of piston rod 11 (diameter 79mm) mated with circular hole (diameter 80mm) size that holding claw 10, coupling block 6 heads surround; Above-mentioned in conjunction with constituting the utility model.During work: 11 elongations of (1) oil cylinder piston bar, " ball-shaped end " on piston rod 11 tops entered in the open holding claw 10, head is protruded at the center of pushing up coupling block 6; Piston rod 11 continues elongation, promoting coupling block 6, holding claw 10 moves along metal backup plate 9 inside casing passages (metal shaft 4 before the dolly behind horizontal Beam 5 cylindrical holes, the dolly horizontal Beam 2 cylindrical holes), horizontal Beam 5 (at this moment before coupling block 6 is run into dolly, holding claw 10 is closed up with piston rod 11 ball-shaped end and is tightly linked to each other, and metal shaft 4 tail end grooves stretch out horizontal Beam 2 behind the dolly; Piston rod 11 continues elongation, and the tandem mill first 13 on sliding machine 3 and the sliding machine 3 shifts out the rolling line position, makes tandem mill first 13 top position clears.(2) with the driving directly tandem mill first 13 is hung out, will with tandem mill second 13 be hung on the sliding machine 3; (3) metal bolt 1 is inserted in the metal shaft 4 afterbody grooves, makes metal shaft 4 axial restraints, guarantees holding claw 10, piston rod 11 can not move axially and tightly continuous; Retract cylinder piston rod 11 is drawn in the rolling line position with tandem mill second 13.(4) when tandem mill second 13 during, shift out metal bolt 1, metal shaft 4 can be moved axially in the rolling line position; Piston rod 11 continues to shrink, sliding machine 3, tandem mill second 13 contact, are obstructed and can not move with support 14 at this moment, after driving holding claw 10, coupling block 6, metal shaft 4, moves in piston rod 11, under the effect of spring 8, holding claw 10 is opened at the place, inclined-plane of metal backup plate 9 inside casing passages, holding claw 10, piston rod 11 safe separating; Piston rod 11 continues to shrink and set back.(5) under the lift effect, hole shape is changed in 13 rise and fall of tandem mill second.The utlity model has reasonable in design, simple in structure, easy to use, the easy characteristics of installation, maintenance, workable, stopped the phenomenon of sliding machine 3 with oil cylinder piston bar 11 unhook poor reliability, avoided possible maloperation, and the piston rod 11 damage accidents that cause are raised labour productivity.