CN101658862B - Sheet rolling mill with hydraulic screwdown on support roll - Google Patents
Sheet rolling mill with hydraulic screwdown on support roll Download PDFInfo
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- CN101658862B CN101658862B CN2009103076571A CN200910307657A CN101658862B CN 101658862 B CN101658862 B CN 101658862B CN 2009103076571 A CN2009103076571 A CN 2009103076571A CN 200910307657 A CN200910307657 A CN 200910307657A CN 101658862 B CN101658862 B CN 101658862B
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Abstract
The invention relates to a sheet rolling mill with a hydraulic screwdown on a support roll. The mill is characterized in that a frame is a horizontal rectangular columnar frame, both sides of an upper beam of the frame is provided with a journal hydraulic screwdown of an upper support roll, a bearing pedestal and two rectangular columns of a working roll and the support roll form two horizontal frames of the mill, hydraulic screwdown of one or two support rolls which are fixed in the middle of the upper beam of the horizontal frame press a cylindrical surface of the support roll body by a hydrostatic semicircular block, a hydrostatic semicircular block with a bearing is supported in the position of a lower support roll which is the same as that of the upper support roll, the bearing is fixed on a lower beam of the frame. The mill has the following advantages: the position and pressure of the hydraulic screwdown of the journal and the roll body are regulated by a sensor to greatly reduce elastic deformation of the support roll during working, and can realzie rolling of the accurate-sized steel plate and increase percent reduction under the condiiton of reducing number and diameter of the supprt rolls and diameter, thus reducing cost and enhancing efficiency.
Description
Technical field
The invention belongs to sheet rolling mill, relate in particular to the sheet rolling mill that a kind of backing roll body of roll has holding-down device of hydraulic.
Background technology
Existing sheet rolling mill only is provided with holding-down device of hydraulic (being called for short the axle journal holding-down device of hydraulic) to adjust the roll gap size on the bearing of journals of backing roll, realize THICKNESS CONTROL, but can not limit and reduce the distortion of the body of roll, holding-down device of hydraulic is a kind of oil cylinder, in pressure and displacement transducer are housed, can dancer rools distance and oil pressure pressure, so, just must do backing roll very slightly in order to reduce the distortion of working roll, sometimes even will increase the quantity of backing roll, (at present, four rollers are arranged, six rollers, 12 rollers, multi-roll mills such as 16 rollers, wherein two to be directly used in rolling roll be working roll, all the other all are backing rolls).To offset the distortion of roll-force to the generation of working roll, to satisfy the requirement of steel plate thickness deviation, so milling train is just done very hugely, cost is very high, and considers that the each drafts of roll deformation also is restricted, and has influenced operating efficiency.The disclosed a kind of backing roll body of roll of U.S. Patent application (US4212504A) has the sheet rolling mill of holding-down device of hydraulic, comprise frame, backing roll and the bearing of journals, to the axle journal spiral screwdown gear at working roll and upper support roller two ends, in the middle part of putting the beams in place, frame is fixed with several backing roll body of roll holding-down device of hydraulic, above-mentioned holding-down device of hydraulic is pressed on the face of cylinder of the upper support roller body of roll by static pressure semicircle piece, and lower support roller and upper support roller have symmetrical structure.This technology still follows the design of traditional rolling mill.Concrete structure is as can be seen: it is still on the architecture basics of rolling mill, adopt two side frames, utilize a plurality of oil cylinders on the profiled beam of two end supports by the elongated surface bearing of semicircle hydrostatic bearing, attempt to reach the purpose of control working roll distortion backing roll.Be not difficult to find out, said structure is formed the structure that remains the rolling mill design principle, this supporting way with many group backing rolls is the same, that is, change the distortion of working roll, need above working roll, increase the backing roll of plurality of integral supporting, and be to support at the elongated working surface of backing roll, but since roll surface and working roll when rolling damage and the distortion of elongated lip-deep hydrostatic support, can cause hydrostatic support to lose efficacy, therefore can not realize reducing the purpose of working roll distortion.Said structure is actual can regard a whole concave surface backing roll structure that is made of profiled beam, oil cylinder, semicircle hydrostatic bearing as.With conventional rolling mill difference, just adopt the semicircle hydrostatic bearing that backing roll is supported.The formula that the fluctuates profiled beam that is increased in the structure is a supplemental support beam, consider based on structure and economic reasonability, it is very huge that it can not be done, therefore the supplemental support beam also will inevitably be out of shape, add the distortion of backing roll, the backing roll deflection is difficult to compensate with series connection a plurality of oil cylinders together.So this structure can not realize controlling the purpose of backing roll distortion.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned technology and provide a kind of a pair of thinner backing roll of need just can satisfy the steel plate rolling tolerance and allow big single to roll the sheet rolling mill that the lighter and handier backing roll body of roll of amount down has holding-down device of hydraulic, improve milling train production efficiency to reduce the milling train cost.
The present invention for achieving the above object, by the following technical solutions: a kind of backing roll body of roll has the sheet rolling mill of holding-down device of hydraulic, comprise frame, the backing roll and the bearing of journals, the a pair of working roll and the bearing of journals, the axle journal holding-down device of hydraulic at upper support roller two ends, it is characterized in that: described frame is horizontal four rectangle column frames, the frame of described four rectangle pillar constructions is steel wire wound form or frame-type frame, frame upper beam both sides are fixed with the axle journal holding-down device of hydraulic of upper support roller, together with backing roll, the bearing block of working roll and two rectangle columns have been formed two horizontal frames of original milling train, one or two fixing backing roll body of roll holding-down device of hydraulic then was pressed on the face of cylinder of the upper support roller body of roll by static pressure semicircle piece in the middle part of described horizontal frame was put the beams in place, lower support roller and the same position of upper support roller upper support have the static pressure semicircle piece of band bearing, described bearing is fixed on the frame underbeam, the described backing roll face of cylinder is provided with groove, and above-mentioned static pressure semicircle piece is pressed on the groove face of cylinder of backing roll.
Be connected for sphere between the oil cylinder piston bar of described holding-down device of hydraulic and the static pressure semicircle piece.
Beneficial effect: two horizontal frames that replace original milling train with four horizontal rectangle column frames, except the same with original two horizontal machine frame rolling mills, the hydraulic balance device that roll is all arranged, outside the configuration such as axle journal holding-down device of hydraulic, also be provided with body of roll holding-down device of hydraulic on the soffit on the horizontal frame respective support roller body of roll Support Position, (one or two), strain descends greatly when adjusting the position of holding-down device of hydraulic of the axle journal and the body of roll and pressure by sensor and making backing roll work, not only can reduce under backing roll quantity and the backing roll diameter condition, realize the rolling of accurate dimension steel plate and can increase each drafts, realize reducing cost, the purpose of raising the efficiency.
Description of drawings
Fig. 1 structural representation of the present invention;
The side view of Fig. 2 Fig. 1;
The A-A profile that Fig. 3 backing roll body of roll is connected with holding-down device of hydraulic;
The force diagram of Fig. 4 backing roll under difference support situation;
The stressed sketch of Fig. 5 backing roll under difference support situation.
Among the figure: 1, rectangle column 2, backing roll body of roll holding-down device of hydraulic 2-1, oil cylinder piston bar 3, static pressure semicircle piece 3-1, bearing 4, upper support roller 5, groove 6, steel plate 7, the working roll bearing of journals 8, the backing roll bearing of journals 9, working roll 10, horizontal frame 11, upper support roll shaft neck holding-down device of hydraulic 12, frame upper beam 12-1, frame underbeam 13, lower support roller.
The specific embodiment
[0010]Describe the specific embodiment of the present invention in detail below in conjunction with accompanying drawing and preferred embodiment
See accompanying drawing for details, a kind of backing roll body of roll has the sheet rolling mill of holding-down device of hydraulic, comprise frame, the backing roll and the bearing of journals 8, the a pair of working roll 9 and the bearing of journals 7, the axle journal holding-down device of hydraulic 11 at upper support roller 4 two ends, described frame is horizontal four rectangle column frames, frame 12 both sides of putting the beams in place are fixed with upper support roll shaft neck holding-down device of hydraulic 11, together with backing roll, the bearing block of working roll and two rectangle columns 1 have been formed two horizontal frames 10 of original milling train, put the beams in place 2 of fixing one or two backing roll body of roll holding-down device of hydraulic in middle part of described horizontal frame are pressed on the face of cylinder of the upper support roller body of roll by static pressure semicircle piece 3, lower support roller 13 has the static pressure semicircle piece 3 of being with bearing with the same position of upper support roller upper support, and described bearing 3-1 is fixed on the frame underbeam 12-1.The described backing roll face of cylinder is provided with groove 5, and above-mentioned static pressure semicircle piece is pressed on the groove face of cylinder of backing roll.Be connected for sphere between the oil cylinder piston bar 2-1 of described holding-down device of hydraulic and the static pressure semicircle piece.The frame of described four rectangle pillar constructions is steel wire wound form or frame-type frame.
Backing roll and working roll all are horizontally arranged on the central cross-section of horizontal frame, their bearing of journals, the axle journal screwdown gear of top, hydraulic balance device all places two horizontal frames having formed existing milling train between two rectangle columns of both sides of horizontal frame and the last underbeam, ground away by working roll for the contact surface that prevents backing roll and static pressure semicircle piece, its contact surface can be slightly more recessed.The axle journal holding-down device of hydraulic 11 of backing roll is the same substantially with the holding-down device of hydraulic structure of existing milling train, here no longer narration, it pushes down the cylinder shape groove 5 of the body of roll of upper support roller 4 by a static pressure semicircle piece 3, shown in Figure 3, it is to be linked to each other by a sphere with static pressure semicircle piece, form one deck static pressure oil film between the cylinder shape groove of static pressure semicircle piece and upper support roller, with power of reducing friction and wearing and tearing.Shown in Figure 2, the axle journal holding-down device of hydraulic is the same with existing milling train also to be provided in a side of the roll pins having top, soffit between the rectangle column of horizontal frame both sides.Two rectangle columns of each of frame both sides and roll bearing, roll balance device (not shown) and other parts have been formed the longitudinal framing the same with existing press.Fig. 4 is the force diagram of backing roll under difference support situation, and Fig. 5 is that backing roll supports situation lower stress sketch in difference, wherein:
A is existing milling train backing roll stressing conditions,
B is the stressing conditions of the existing milling train backing roll body of roll when a holding-down device of hydraulic supports,
C is the stressing conditions of the existing milling train backing roll body of roll when two holding-down device of hydraulic support,
It is as follows to obtain the result by the conservative calculating of Fig. 5:
The maximum deformation quantity △ f of roll barrel
A. existing milling train backing roll maximum deformation quantity:
△f
a=1×10
-2Lq
4/EI
B. be subjected to the backing roll maximum distortion of a supporting on the body of roll
△f
b=3×10
-4Lq
4/EI
C. be subjected to the backing roll maximum distortion of two supportings on the body of roll
△f
c=8×10
-5Lq
4/EI
As seen have one when supporting deflection have only originally 1/33, and deflection has only original 1/125 when having two supportings.
In fact by measures such as adjusting length of supports, the backing roll deflection can also further reduce.In addition, the bearing capacity of the roll holding-down device of hydraulic at two ends and the holding-down device of hydraulic of the backing roll body of roll is distributed and should be decided according to calculating end reaction, thereby capacity that can the reasonable disposition holding-down device of hydraulic, but their pressure summation should be greater than the actual roll-force of steel plate.
Structural principle:
The present invention utilizes the basis of infinitely-great buckstay as local support, and the static pressure semicircle piece of the groove surface of the support cylinder holding-down device of hydraulic of stroke (can the pressure regulation power and) by placing the backing roll cylinder carries out the pressurized supporting to backing roll.Design feature is that support cylinder carries out the pressurized supporting by the static pressure semicircle piece in the groove surface that places the backing roll cylinder to backing roll, to reduce the distortion of backing roll.The static pressure semicircle piece that designs in order to realize local support is to the sliding contact surface between the backing roll, because the impaired roll surface of static pressure semicircle piece discord is slided, therefore guarantee the fineness and the validity of area supported, just may realize reducing the purpose of backing roll distortion.Fundamentally solved effective control for the backing roll deflection.
Operation principle:
Before rolling, screwdown gear (one or two) on two the axle journal holding-down device of hydraulic and the backing roll body of roll is lowered to assigned position at displacement transducer and pressure sensor indication, can shut out the qualified steel plate of size 6 at this position working roll, in the operation of rolling, the dimensional discrepancy of steel plate thickness, the stand stretch amount all can be indicated holding-down device of hydraulic and be adjusted position and pressure, until shutting out the steel plate 6 that satisfies thickness requirement.Be that roll holding-down device of hydraulic or body of roll holding-down device of hydraulic all are supported on the upper beam of horizontal frame.For the bearing-surface that prevents the backing roll body of roll is damaged when rolling at working roll, so be processed as a cylindrical groove at this position and static pressure semicircle piece matches, enter hydraulic oil between them and form oil film, reducing frictional force and wearing and tearing, there is sphere to be connected between static pressure semicircle piece and the holding-down device of hydraulic.And the body of roll of lower support roller is also under the oil film supporting of static pressure semicircle piece to it, and underbeam is when work, and deflection should be much smaller than the steel plate thickness deviation.
Two rolls, because the measure of having adopted body of roll hydraulic pressure to support, deflection can be very little in the operation of rolling for backing roll, so not only can dwindle the diameter of backing roll, reduce quantity, and can strengthen each rolling drafts, thereby alleviated the weight of milling train, improved production efficiency, economic effect is very remarkable.
The above only is preferred embodiment of the present invention, is not structure of the present invention is done any pro forma restriction.Every foundation technical spirit of the present invention all still belongs in the scope of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1. the backing roll body of roll has the sheet rolling mill of holding-down device of hydraulic, comprise frame, the backing roll and the bearing of journals, the a pair of working roll and the bearing of journals, the axle journal holding-down device of hydraulic at upper support roller two ends, it is characterized in that: described frame is horizontal four rectangle column frames, the frame of described four rectangle pillar constructions is steel wire wound form or frame-type frame, frame upper beam both sides are fixed with the axle journal holding-down device of hydraulic of upper support roller, together with backing roll, the bearing block of working roll and two rectangle columns have been formed two horizontal frames of original milling train, one or two fixing backing roll body of roll holding-down device of hydraulic then was pressed on the face of cylinder of the upper support roller body of roll by static pressure semicircle piece in the middle part of described horizontal frame was put the beams in place, lower support roller and the same position of upper support roller upper support have the static pressure semicircle piece of band bearing, described bearing is fixed on the frame underbeam, the described backing roll face of cylinder is provided with groove, and above-mentioned static pressure semicircle piece is pressed on the groove face of cylinder of backing roll.
2. the backing roll body of roll according to claim 1 has the sheet rolling mill of holding-down device of hydraulic, it is characterized in that: be connected for sphere between the oil cylinder piston bar of described holding-down device of hydraulic and the static pressure semicircle piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103076571A CN101658862B (en) | 2009-09-24 | 2009-09-24 | Sheet rolling mill with hydraulic screwdown on support roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009103076571A CN101658862B (en) | 2009-09-24 | 2009-09-24 | Sheet rolling mill with hydraulic screwdown on support roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101658862A CN101658862A (en) | 2010-03-03 |
| CN101658862B true CN101658862B (en) | 2010-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009103076571A Active CN101658862B (en) | 2009-09-24 | 2009-09-24 | Sheet rolling mill with hydraulic screwdown on support roll |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303049B (en) | 2011-05-18 | 2013-11-13 | 合肥市百胜科技发展股份有限公司 | Positioning device for bearing seat of rolling mill |
| CN102310085A (en) * | 2011-05-18 | 2012-01-11 | 合肥市百胜科技发展股份有限公司 | Adjustment device of rolling mill roller |
| CN102688891A (en) * | 2012-05-29 | 2012-09-26 | 上海电机学院 | Static-pressure suspension beam barrel device |
| CN102744266A (en) * | 2012-06-26 | 2012-10-24 | 中国重型机械研究院有限公司 | Variable-deflection four-roller rolling machine |
| CN104858236A (en) * | 2015-06-15 | 2015-08-26 | 中冶赛迪工程技术股份有限公司 | Auxiliary roller support device |
| CN110153193B (en) * | 2019-05-31 | 2020-08-04 | 常州大学 | Rolling mill capable of adjusting pressure compensation deflection |
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2009
- 2009-09-24 CN CN2009103076571A patent/CN101658862B/en active Active
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| CN101658862A (en) | 2010-03-03 |
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Assignee: Tianjin Taipingyang Super-high Pressure Hydraulic Press Co., Ltd. Assignor: Zhu Mianxue Contract record no.: 2011120000289 Denomination of invention: Sheet rolling mill with hydraulic screwdown on support roll Granted publication date: 20100804 License type: Exclusive License Open date: 20100303 Record date: 20111221 |