CN104550249A - Method for rapidly solving roller system locking of integrated type twenty-roller rolling mill - Google Patents

Abstract

The invention discloses a method for rapidly solving roller system locking of an integrated type twenty-roller rolling mill. The circle centers of two eccentric rollers on the upper side are moved upwards and the circle centers of two eccentric rollers on the lower side are moved downwards, so that the distances among eight eccentric rollers are expanded and the eight eccentric rollers are mutually separated. The method has the beneficial effects of rapidness in unlocking, no destructiveness and simplicity and convenience for operation.

Description

The method that quick solution monoblock type twenty roller mill roller system is locked

Technical field

The present invention relates to a kind of roller system unlock method, a kind of method that specifically quick solution monoblock type twenty roller mill roller system is locked.

Background technology

Monoblock type Sendzimir mill roller system is complicated, opening degree is little, be only 6.36mm, there is multiple roll gap adjustment mechanism, they are screw-down, lateral deviation concentric mechanism, roll line absolute altitude governor motion, roll forming governor motion (ASU and an intermediate regulations mechanism) respectively, along with the raising of milling train equipment, these executing agencies are hydraulic-driven, wherein pressure and roll forming governor motion are high-pressure system, can adjust when rolling mill strip load, and the lateral deviation heart and roll line absolute altitude regulating system are low-pressure system, its function can only be realized in an unloaded situation.

In actual production, due to reasons such as lateral deviation heart encoder or roll line elevation location sensor values mistake, operative employee's misoperations, very easily cause roller system locked, namely depress after all opening, still there is roll-force, cannot roller be taken out, and now the lateral deviation heart and roll line absolute altitude cannot actions.

At present, this problem is solved mainly through several method.The first is in safe range, suitably increase lateral deviation heart hydraulic motor pressure, but the method has little effect, because according to roller system force analysis, eccentric roller is stressed maximum.The second is in safe range, suitable increase roll line absolute altitude hydraulic pressure, but the method has limitation equally, the roll gap adjustment ability of this mechanism is 6.35mm, and scope is little, when roller system locked serious time, the method is invalid, when first two method is invalid, finally adopts destructive method (oxyacetylene metal-cutting etc.) to be extracted out by working roll, but the injury of the method breaker roll is large, and the processing time is long.

Summary of the invention

The object of the invention is the deficiency existed to solve above-mentioned background technology, propose a kind of can quick release and without the locked method of quick solution monoblock type twenty roller mill roller system destructive, easy and simple to handle.

In order to realize above object, the method that a kind of quick solution monoblock type twenty roller mill roller system provided by the invention is locked, is characterized in that: comprise the steps:

1) eight eccentric rollers arranged ringwise in monoblock type twenty roller mill roller system are defined as A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller along clockwise direction successively, wherein B roller, C roller are positioned at top; D roller, E roller are positioned at right side; F roller, G roller are positioned at below; H roller, A roller be positioned at left side, more than all the other eccentric rollers two of the tooth bar number of F roller, G roller, is provided with the pressure tooth bar be meshed with B roller and C roller between described B roller, C roller, be provided with between described F roller, G roller be meshed with F roller, G roller press tooth bar;

2) improve the oil cylinder hydraulic pressure driving pressure tooth bar, pressure tooth bar is moved downward, now B roller and the C roller rack drives that is depressed rotates, and its center of circle moves up, and stops until the center of circle of B roller and C roller moves to topmost;

3) improve to drive and press the oil cylinder hydraulic pressure of tooth bar, make to press tooth bar and move upward, now F roller and the G roller rack drives that is depressed rotates, and its center of circle moves down, and stops afterwards bottom until the center of circle of F roller and G roller moves to;

4) removing pressure tooth bar, beating to closed position by driving the oil cylinder hydraulic pressure of pressure tooth bar;

5) again load onto pressure tooth bar, restart driving and press the oil cylinder of tooth bar and improve hydraulic pressure, pressure tooth bar moves upward again;

6) due to more than all the other eccentric rollers two of the tooth bar number of F roller, G roller, again moving upward therefore along with pressure tooth bar, the center of circle of F roller and G roller can move down a segment distance more;

7) center of circle of top B roller and C roller moves up, and the center of circle of below F roller and G roller moves down, and the spacing of A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller is expanded, is separated from each other.

The present invention is by moving up the center of circle of B roller and C roller, and the center of circle of below F roller and G roller moves down, and the spacing of A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller is expanded, is separated from each other.Both reduced the damage of roller system, avoided that working roll that destructive cutting roll causes is meaningless to be scrapped, and substantially reduced fault handling time simultaneously, greatly improve utilization rate of equipment and installations and mill production.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is structural representation after roller system unlocks;

In figure: depress tooth bar 1, press tooth bar 2.

Detailed description of the invention

Below in conjunction with drawings and Examples, the invention will be further described.

Embodiment: the method that a kind of quick solution monoblock type twenty roller mill roller system is as shown in Figure 1 and Figure 2 locked, comprises the steps:

1) eight eccentric rollers arranged ringwise in monoblock type twenty roller mill roller system are defined as A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller along clockwise direction successively, wherein B roller, C roller are positioned at top; D roller, E roller are positioned at right side; F roller, G roller are positioned at below; H roller, A roller be positioned at left side, more than all the other eccentric rollers two of the tooth bar number of F roller, G roller, is provided with the pressure tooth bar 1 be meshed with B roller and C roller between described B roller, C roller, be provided with between described F roller, G roller be meshed with F roller, G roller press tooth bar 2;

2) improve the oil cylinder hydraulic pressure driving pressure tooth bar 1, pressure tooth bar 1 is moved downward, now B roller and C roller are depressed tooth bar 1 driven rotary, and its center of circle moves up, and stop until the center of circle of B roller and C roller moves to topmost;

3) improve to drive and press the oil cylinder hydraulic pressure of tooth bar 2, make to press tooth bar 2 and move upward, now F roller and G roller are depressed tooth bar 1 driven rotary, and its center of circle moves down, and stops afterwards bottom until the center of circle of F roller and G roller moves to;

4) removing pressure tooth bar 1, beating to closed position by driving the oil cylinder hydraulic pressure of pressure tooth bar 1;

5) again load onto pressure tooth bar 1, restart driving and press the oil cylinder of tooth bar 2 and improve hydraulic pressure, pressure tooth bar 1 moves upward again;

6) due to more than all the other eccentric rollers two of the tooth bar number of F roller, G roller, again moving upward therefore along with pressure tooth bar 1, the center of circle of F roller and G roller can move down a segment distance more;

7) center of circle of top B roller and C roller moves up, and the center of circle of below F roller and G roller moves down, and the spacing of A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller is expanded, is separated from each other.

A kind of F of improvement, G roller sector gear, more former design adds 2 total number of teeth in engagement near oil cylinder extreme direction, expand pinion rotation stroke, F roller saddle centre coordinate is (149.225,-400.05), roll centre coordinate is (154.724,-403.225), start angle is-30 °, angle at the end is 44.12 °, G roller saddle centre coordinate is (-149.225,-400.05), roll centre coordinate is (-154.724,-403.225), start angle is 210 °, angle at the end is 135.88 °, F before, G roller sector gear has 11 angles to be 74.12 °. and F is considered in this improvement, G roller bearing surface can not be bumped against, therefore introducing constraints, namely after reaching range, Liang Gun center abscissa absolute value sum must be greater than two roller maximum radius sums, and only could increase roll gap adjustment ability near oil cylinder end.

Specifically be calculated as follows:

Known maximum support roller bearing external diameter is 300.02mm, and eccentric throw is 6.35mm.

Consider that the limited angular under constraints is arcsin (300.02/2-149.225)/6.35=arcsin (0.123622)=0.123939 °

Therefore the maximum angle that can increase is 90 ° of--start angle--limited angular ≈ 59.87 °

Namely can increase at most 8.885 teeth, round numbers 8, ensure device security prerequisite under, capacity of equipment can be improved to greatest extent, thus increase the number of gears≤8, the present embodiment chooses the increase number of gears=2.

The above is only preferred embodiment of the present invention, not does any pro forma restriction to structure of the present invention.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical scheme of the present invention.

Claims (1)

1. the method that quick solution monoblock type twenty roller mill roller system is locked, is characterized in that: comprise the steps:

1) eight eccentric rollers arranged ringwise in monoblock type twenty roller mill roller system are defined as A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller along clockwise direction successively, wherein B roller, C roller are positioned at top; D roller, E roller are positioned at right side; F roller, G roller are positioned at below; H roller, A roller are positioned at left side, more than all the other eccentric rollers two of the tooth bar number of F roller, G roller, be provided with the pressure tooth bar (1) be meshed with B roller and C roller between described B roller, C roller, be provided with between described F roller, G roller be meshed with F roller, G roller press tooth bar (2);

2) the oil cylinder hydraulic pressure driving pressure tooth bar (1) is improved, pressure tooth bar (1) is moved downward, now B roller and C roller are depressed tooth bar (1) driven rotary, and its center of circle moves up, and stop until the center of circle of B roller and C roller moves to topmost;

3) the oil cylinder hydraulic pressure that driving presses tooth bar (2) is improved, make to press tooth bar (2) to move upward, now F roller and G roller are depressed tooth bar (1) driven rotary, and its center of circle moves down, and stops afterwards bottom until the center of circle of F roller and G roller moves to;

4) removing pressure tooth bar (1), beating to closed position by driving the oil cylinder hydraulic pressure of pressure tooth bar (1);

5) again load onto pressure tooth bar (1), restart driving and press the oil cylinder of tooth bar (2) and improve hydraulic pressure, pressure tooth bar (1) moves upward again;

6) due to more than all the other eccentric rollers two of the tooth bar number of F roller, G roller, again moving upward therefore along with pressure tooth bar (1), the center of circle of F roller and G roller can move down a segment distance more;

7) center of circle of top B roller and C roller moves up, and the center of circle of below F roller and G roller moves down, and the spacing of A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller is expanded, is separated from each other.