CN103028607B - Method and frame for taking out broken roll of upper working roll - Google Patents

Abstract

The invention relates to the field of maintenance of finishing mill groups, in particular to a method and a frame for taking out broken rolls of an upper working roll, which are characterized in that the upper working roll which is broken into two to three sections is taken out at one time by virtue of the automatic extraction function of a lower working roll, and the operation steps are as follows: 1) lifting the upper working roll by matching with the upper working roll balance cylinder; 2) the lower working roll is pulled out, and the broken roll taking-out frame is lifted to a position between clamping grooves of the lower working roll by a crane; 3) adjusting the position of the bolt on the broken roller taking-out frame to respectively clamp the contact clamping grooves; 4) then the lower working roll is driven into the rolling mill, and the upper working roll is slowly dropped onto the broken roll taking-out frame according to a roll changing program; 5) and simultaneously drawing out the broken upper working roll and the lower working roll, and replacing with a new upper working roll. Compared with the prior art, the invention has the beneficial effects that: the automatic drawing device is universal to a plurality of frames with different structures in a finishing mill group, and the accident handling time is shortened to be within 1-2 hours by means of the automatic drawing function of the lower working roll, so that the maintenance efficiency is greatly improved.

Description

A kind of top working roll roll breakage removing method and roll breakage take out frame

Technical field

The present invention relates to mm finishing mill unit maintenance field, relate in particular to a kind of top working roll roll breakage removing method and roll breakage and take out frame.

Background technology

Along with Hot Line product structure is constantly upgraded, finish rolling load is increasing, and roll breakage risk increases, and takes out specific purpose tool owing to lacking roll breakage, can only adopt the method for firmly dragging of haling, and the processing time of each accident, between 8～12 hours, is caused tremendous economic loss.

In various roll breakage accidents, top working roll and support roller fracture are to take out difficulty maximum, and reason is to lack whereabouts fulcrum, the easy landing accident of tumbling of extraction.Possess at present upper support roller fast fetching and gone out tools and techniques, still lacked a kind of instrument of safe, quick taking-up fracture top working roll, by the disposable taking-up of two to three joint roll breakages, and needed during the course effectively to prevent unstability and landing.

Summary of the invention

The object of this invention is to provide a kind of top working roll roll breakage removing method and roll breakage and take out frame, overcome the deficiencies in the prior art, be common to the different several frames of structure in mm finishing mill unit, by means of the automatic trimming function of bottom working roll, by within accident treatment time shorten to 1～2 hour, increase work efficiency, reduce second accident risk, reduce production suspension induced losses.

For solving the problems of the technologies described above, technical scheme of the present invention is:

A kind of top working roll roll breakage removing method, by means of the automatic trimming function of bottom working roll, once takes out the top working roll that is broken into two to three joints, and its operating procedure is as follows:

1) occurring after top working roll roll breakage accident, first, by upper support roller rise, for being scattered and misplacing in the top working roll lifting process that prevents from rupturing, can adopt steel cable and bottle gouard moved by hands that top working roll is hung, coordinating top working roll compensating cylinder that top working roll is mentioned;

2) bottom working roll is extracted out, roll breakage is taken out to frame handling between the draw-in groove of bottom working roll with crane, and adjust relatively opposedly, the hook that makes roll breakage take out frame aligns with top working roll transmission side bearing housing outer, guarantees to hook top working roll bearing housing;

3) position of adjusting roll breakage and taking out bolt on frame, makes bolt block respectively the draw-in groove that contacts of top working roll and bottom working roll, prevents from that top working roll homalocephalus is out of shape to cause with flat head sleeve to take out roller difficulty;

4) drive bottom working roll into milling train again, by roll change program, top working roll is slowly fallen to roll breakage and take out on frame, whether firmly observe landing point, for preventing falling the rear body of roll higher than bearing housing, can be ready to cushion block, adjust at any time land state;

5) after determining that all normally, top working roll roll breakage and bottom working roll are extracted out simultaneously, hung away top working roll roll breakage and bottom working roll, change new top working roll;

The roll breakage of realizing described top working roll roll breakage removing method takes out frame, comprise longeron one, longeron two and trapezoidal supporting plate, on longeron one and longeron two, relative position is respectively equipped with slotted hole one and slotted hole two, in slotted hole one, be provided with bolt one, in slotted hole two, be provided with bolt two, on longeron one and longeron two, be arranged with trapezoidal supporting plate, 3～4 blocks of trapezoidal supporting plates all distribute between two parties on longeron one and longeron two, longeron one and longeron two one end are also provided with slotted hole three and slotted hole four, slotted hole three and slotted hole four position symmetries, be respectively equipped with hook in slotted hole three and slotted hole four.

Described longeron one and longeron two are I-steel.

Longeron one or longeron two upper trapezoid supporting plate spacing L are 500mm～550mm.

Compared with prior art, the invention has the beneficial effects as follows: be common to the different several frames of structure in mm finishing mill unit, cost of manufacture is cheap, simple to operate, safe, quick, by means of the automatic trimming function of bottom working roll, by within accident treatment time shorten to 1～2 hour, increase work efficiency, reduce second accident risk, reduce production suspension induced losses.

Brief description of the drawings

Fig. 1 is that a kind of roll breakage of the present invention takes out frame example structure schematic diagram;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is the side view of Fig. 1;

Fig. 4 is that top working roll roll breakage of the present invention takes out view.

In figure: the trapezoidal supporting plate 4-of 1-longeron one 2-longeron two 3-slotted hole one 5-slotted hole two 6-bolt one 7-bolt two 8-slotted hole three 9-slotted hole four 10-hook 11-top working roll 12-top working roll bearing housing 13-bottom working roll 14-roll breakages take out frame 15-draw-in groove

Detailed description of the invention

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:

See Fig. 1, that a kind of roll breakage of the present invention takes out frame example structure schematic diagram, comprise longeron 1, longeron 22 and trapezoidal supporting plate 3, on longeron 1 and longeron 22, relative position is respectively equipped with slotted hole 1 and slotted hole 25, is provided with bolt 1 in slotted hole 1, is provided with bolt 27 in slotted hole 25, bolt 1 and bolt 27 can be adjusted position along slotted hole 1 and slotted hole 25, to adapt to working roll structures different in seven frames, the used time is not smeared antirust oil at bolt position, prevents disabler.On longeron 1 and longeron 22, be arranged with trapezoidal supporting plate 3,3～4 blocks of trapezoidal supporting plates 3 all distribute between two parties on longeron 1 and longeron 22, longeron 1 and longeron 22 one end are also provided with slotted hole 38 and slotted hole 49, slotted hole 38 and slotted hole 49 position symmetries, in slotted hole 38 and slotted hole 49, be respectively equipped with hook 10, hook 10 can be adjusted position along slotted hole 38 and slotted hole 49 slips, to adapt to the processing of accident under specific position relation, can select as required whether to use hook 10.

Longeron 1 and longeron 22 are the making of 10# I-steel.Longeron 1 or longeron 22 upper trapezoid supporting plate 3 spacing L are 500mm～550mm.

A kind of top working roll roll breakage of the present invention removing method, is the automatic trimming function by means of finishing mill bottom working roll, and the top working roll that is broken into two to three joints is once taken out, and its operating procedure is as follows:

1) occurring after top working roll roll breakage accident, first upper support roller is risen, for being scattered and misplacing in top working roll 11 lifting process that prevent from rupturing, can adopt steel cable and bottle gouard moved by hands that top working roll 11 is hung, coordinate top working roll compensating cylinder that top working roll is mentioned;

2) bottom working roll 13 is extracted out, with crane, roll breakage being taken out to frame 14 handlings arrives between the draw-in groove 15 of bottom working roll, and adjust relatively opposedly, and make roll breakage take out the hook 10 of frame and align with top working roll transmission side bearing housing outer, guarantee to hook top working roll bearing housing 12;

3) position of adjusting roll breakage and taking out bolt on frame, makes bolt block respectively the draw-in groove 15 of top working roll 11 and bottom working roll 13, prevents from that top working roll 11 homalocephalus are out of shape to cause with flat head sleeve to take out roller difficulty;

4) drive bottom working roll 13 into milling train again, by roll change program, top working roll 11 is slowly fallen to roll breakage and take out on frame 14, whether firmly observe landing point, for preventing falling the rear body of roll higher than bearing housing, can be ready to cushion block, adjust at any time land state;

5) after determining that all normally, top working roll 11 roll breakages and bottom working roll 13 are extracted out simultaneously, hung away top working roll roll breakage and bottom working roll, change new top working roll.

Claims (1)

1. a top working roll roll breakage removing method, is characterized in that, by means of the automatic trimming function of bottom working roll, the top working roll that is broken into two to three joints is once taken out, and its operating procedure is as follows:

1) occurring after top working roll roll breakage accident, first, by upper support roller rise, for being scattered and misplacing in the top working roll lifting process that prevents from rupturing, can adopt steel cable and bottle gouard moved by hands that top working roll is hung, coordinating top working roll compensating cylinder that top working roll is mentioned;

2) bottom working roll is extracted out, roll breakage is taken out to frame handling between the draw-in groove of bottom working roll with crane, and adjust relatively opposedly, the hook that makes roll breakage take out frame aligns with top working roll transmission side bearing housing outer, guarantees to hook top working roll bearing housing;

3) position of adjusting roll breakage and taking out bolt on frame, makes bolt block respectively the draw-in groove that contacts of top working roll and bottom working roll, prevents from that top working roll homalocephalus is out of shape to cause with flat head sleeve to take out roller difficulty;

4) drive bottom working roll into milling train again, by roll change program, top working roll is slowly fallen to roll breakage and take out on frame, whether firmly observe landing point, for preventing falling the rear body of roll higher than bearing housing, can be ready to cushion block, adjust at any time land state;

5) after determining that all normally, top working roll roll breakage and bottom working roll are extracted out simultaneously, hung away top working roll roll breakage and bottom working roll, change new top working roll;

The roll breakage of realizing described top working roll roll breakage removing method takes out frame, comprise longeron one, longeron two and trapezoidal supporting plate, on longeron one and longeron two, relative position is respectively equipped with slotted hole one and slotted hole two, in slotted hole one, be provided with bolt one, in slotted hole two, be provided with bolt two, on longeron one and longeron two, be arranged with trapezoidal supporting plate, 3～4 blocks of trapezoidal supporting plates all distribute between two parties on longeron one and longeron two, longeron one and longeron two one end are also provided with slotted hole three and slotted hole four, slotted hole three and slotted hole four position symmetries, be respectively equipped with hook in slotted hole three and slotted hole four.