CN104550249B - 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

Quickly solving monoblock type twenty rolling mill roll is locked method

Technical field

The present invention relates to a kind of roller system unlocking method, specifically a kind of quickly solution monoblock type twenty Rolling mill roll is locked method.

Background technology

Monoblock type Sendzimir mill roller system is complicated, opening degree is little, only 6.36mm, Having multiple roll gap adjustment mechanism, they are screw-down, lateral deviation concentric mechanism, roll line respectively Absolute altitude governor motion, roll forming governor motion (ASU and an intermediate regulations mechanism), along with milling train The raising of equipment, these actuators are hydraulic-driven, and wherein pressure and roll forming regulate machine Structure is high-pressure system, can adjust when rolling mill strip loads, and the lateral deviation heart and roll line absolute altitude are adjusted Joint system is low-pressure system, can only realize its function in an unloaded situation.

In actual production, due to lateral deviation heart encoder or roll line elevation location sensor values The reasons such as mistake, operative employee's misoperation, easily cause roller system locked, and namely pressure is all After opening, still there is roll-force, it is impossible to take out roller, and now the lateral deviation heart and roll line absolute altitude cannot Action.

At present, mainly this problem is solved by several method.The first is in safety range, Suitably increase lateral deviation heart hydraulic motor pressure, but the method has little effect, because being subject to according to roller system Power is analyzed, and eccentric roller stress is maximum.The second is in safety range, suitably increases roll line Absolute altitude hydraulic pressure, but the method has limitation equally, and the roll gap adjustment ability of this mechanism is 6.35mm, scope is little, when roller system locked serious time, the method is invalid, in first two method In the case of invalid, destructive method (oxyacetylene metal-cutting etc.) is finally used to be extracted out by working roll, but The method is big to roll injury, and the time of process is long.

Summary of the invention

The invention aims to solve the deficiency that above-mentioned background technology exists, propose one Can quick release and quickly solve monoblock type twenty rolling mill roll system lock without destructive, easy and simple to handle Dead method.

In order to realize object above, a kind of quickly solution monoblock type twenty rolling that the present invention provides The method that machine roller system is locked, it is characterised in that: comprise the steps:

1) by eight eccentric rollers arranging ringwise in monoblock type twenty rolling mill roll system along clockwise Direction is defined as A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller successively, Wherein B roller, C roller are above；D roller, E roller are positioned at right side；Under F roller, G roller are positioned at Side；On the left of H roller, A roller are positioned at, F roller, many two of remaining eccentric roller of gear ratio of G roller, The pressure tooth bar being meshed with B roller and C roller, described F it is provided with between described B roller, C roller It is provided with between roller, G roller and presses tooth bar with F roller, G roller are meshed；

2) improve the oil cylinder hydraulic pressure of tooth bar under driving pressure, make pressure tooth bar move downward, Now B roller and the C roller rack drives that is depressed rotates, and its center of circle moves up, until B roller Stopping is moved to the top with the center of circle of C roller；

3) improve the oil cylinder hydraulic pressure of driving pressure upper rack, make to press tooth bar and move upward, Now F roller and G roller are pressed rack drives rotation, and its center of circle moves down, until F roller Stopping is moved to bottom with the center of circle of G roller；

4) dismounting presses tooth bar, beats the oil cylinder hydraulic pressure of driving pressure upper rack to close stance Put；

5) it is reinstalled pressing tooth bar, restarts the oil cylinder of driving pressure upper rack and improve liquid Pressure pressure, presses tooth bar and moves again up；

6) due to F roller, many two of remaining eccentric roller of gear ratio of G roller, therefore along with pressing The motion again up of tooth bar, the center of circle of F roller and G roller can move down a segment distance more；

7) top B roller and the center of circle of C roller move up, the center of circle of lower section F roller and G roller to Lower movement, makes between A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller Away from expansion, it is separated from each other.

The present invention by the center of circle of B roller and C roller is moved up, lower section F roller and G roller The center of circle moves down, and makes A roller, B roller, C roller, D roller, E roller, F roller, G roller, H The spacing of roller expands, and is separated from each other.Both the damage of roller system had been reduced, it is to avoid destructive cutting is rolled Working roll that roller causes is meaningless to be scrapped, and substantially reduces fault handling time simultaneously, is greatly improved Utilization rate of equipment and installations and mill production.

Accompanying drawing explanation

Fig. 1 is the 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 the accompanying drawings and embodiment the invention will be further described.

Embodiment: the quickly solution monoblock type twenty rolling mill roll system of one as shown in Figure 1 and Figure 2 Locked method, comprises the steps:

1) by eight eccentric rollers arranging ringwise in monoblock type twenty rolling mill roll system along clockwise Direction is defined as A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller successively, Wherein B roller, C roller are above；D roller, E roller are positioned at right side；Under F roller, G roller are positioned at Side；On the left of H roller, A roller are positioned at, F roller, many two of remaining eccentric roller of gear ratio of G roller, The pressure tooth bar 1 being meshed with B roller and C roller, described F it is provided with between described B roller, C roller It is provided with between roller, G roller and presses tooth bar 2 with F roller, G roller are meshed；

2) improve the oil cylinder hydraulic pressure of tooth bar 1 under driving pressure, make pressure tooth bar 1 transport downwards Dynamic, now B roller and the C roller tooth bar 1 that is depressed is rotated, and its center of circle moves up, directly Stopping is moved to the top in the center of circle to B roller and C roller；

3) improve the oil cylinder hydraulic pressure of driving pressure upper rack 2, make to press tooth bar 2 and upwards transport Dynamic, now F roller and G roller are pressed tooth bar 2 and are rotated, and its center of circle moves down, directly Stopping is moved to bottom in the center of circle to F roller and G roller；

4) dismounting presses tooth bar 2, beats the oil cylinder hydraulic pressure of driving pressure upper rack 2 to pass Closed position；

5) it is reinstalled pressing tooth bar 2, restarts the oil cylinder of driving pressure upper rack 2 and carry High hydraulic pressure, presses tooth bar 2 and moves again up；

6) due to F roller, many two of remaining eccentric roller of gear ratio of G roller, therefore along with pressing The motion again up of tooth bar 2, the center of circle of F roller and G roller can move down a segment distance more；

7) top B roller and the center of circle of C roller move up, the center of circle of lower section F roller and G roller to Lower movement, makes between A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller Away from expansion, it is separated from each other.

F, G roller sector gear of a kind of improvement, more original design close oil cylinder extreme direction adds 2 total number of teeth in engagement, expand pinion rotation stroke, F roller saddle centre coordinate be (149.225, -400.05), roll centre coordinate is (154.724 ,-403.225), and start angle is-30 °, Angle at the end is 44.12 °, and G roller saddle centre coordinate is (-149.225 ,-400.05), rolls Roller centre coordinate is (-154.724 ,-403.225), and start angle is 210 °, angle at the end Being 135.88 °, F, G roller sector gear has 11 angles to be 74.12 ° before. and this improves Can not bump against in view of F, G roller bearing surface, therefore introduce constraints, i.e. reach maximum row Cheng Hou, Liang Gun center abscissa absolute value sum have to be larger than two roller maximum radius sums, and only Have and could increase roll gap adjustment ability near oil cylinder end.

Specifically it is 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 °

The most at most can increase by 8.885 teeth, round numbers 8, before ensureing equipment safety Put, can improve capacity of equipment to greatest extent, therefore the increased number of gears≤8, this enforcement Example chooses the increase number of gears=2.

The above, be only presently preferred embodiments of the present invention, the not structure to the present invention Do any pro forma restriction.Above example is made by every technical spirit according to the present invention Any simple modification, equivalent variations and modification, all still fall within the model of technical scheme In enclosing.

Claims (1)

1. quick solution monoblock type twenty rolling mill roll is locked method, it is characterised in that: Comprise the steps:

1) by eight eccentric rollers arranging ringwise in monoblock type twenty rolling mill roll system along clockwise Direction is defined as A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller successively, Wherein B roller, C roller are above；D roller, E roller are positioned at right side；Under F roller, G roller are positioned at Side；On the left of H roller, A roller are positioned at, F roller, many two of remaining eccentric roller of gear ratio of G roller, The pressure tooth bar (1) being meshed with B roller and C roller, institute it is provided with between described B roller, C roller State be provided with between F roller, G roller be meshed with F roller, G roller press tooth bar (2)；

2) improve the oil cylinder hydraulic pressure of tooth bar (1) under driving pressure, make pressure tooth bar (1) Moving downward, now B roller and the C roller tooth bar (1) that is depressed is rotated, and its center of circle is upwards It is mobile, until stopping is moved to the top in the center of circle of B roller and C roller；

3) improve the oil cylinder hydraulic pressure of driving pressure upper rack (2), make to press tooth bar (2) Moving upward, now F roller and G roller are pressed tooth bar (2) and are rotated, and its center of circle is downward It is mobile, until stopping is moved to bottom in the center of circle of F roller and G roller；

4) dismounting presses tooth bar (2), is beaten by the oil cylinder hydraulic pressure of driving pressure upper rack (2) To closed position；

5) it is reinstalled pressing tooth bar (2), restarts the oil cylinder of driving pressure upper rack (2) And improve hydraulic pressure, press tooth bar (2) and move again up；

6) due to F roller, many two of remaining eccentric roller of gear ratio of G roller, therefore along with pressing The motion again up of tooth bar (2), the center of circle of F roller and G roller can move down one section more Distance；

7) top B roller and the center of circle of C roller move up, the center of circle of lower section F roller and G roller to Lower movement, makes between A roller, B roller, C roller, D roller, E roller, F roller, G roller, H roller Away from expansion, it is separated from each other.