CN105080978A - Design of novel rolling mill hydraulic system - Google Patents
Design of novel rolling mill hydraulic system Download PDFInfo
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- CN105080978A CN105080978A CN201510581183.5A CN201510581183A CN105080978A CN 105080978 A CN105080978 A CN 105080978A CN 201510581183 A CN201510581183 A CN 201510581183A CN 105080978 A CN105080978 A CN 105080978A
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Abstract
The invention discloses a novel rolling mill hydraulic system, and belongs to the technical field of hydraulic systems. The novel rolling mill hydraulic system is characterized in that an adjusting branch is added on an oil way connected with a rod cavity of a hydraulic cylinder; the adjusting branch consists of a two-position three-way electromagnetic reversing valve and a proportional throttling valve; and the pressure of a rodless cavity of the hydraulic cylinder can be adjusted, so that rolled pieces can release huge pressure at the moment of touching a roller, the rolling force is enhanced, the efficiency of the hydraulic system is improved, the quality of the rolled pieces is improved, and the factory benefit is increased.
Description
Technical field
Patent of the present invention relates to hydraulic system field.
Background technology
Milling train is in the process of rolling, and when the moment of rolled piece and roll contact, the moment be namely engaged, roll is severely affected power, and the head of such rolled piece is often squeezed, second-rate.The rolled piece sent here from transmission rod can touch roll suddenly, rolled piece receives very large impulsive force, hydraulic cylinder meeting rollback after being impacted, the displacement of hydraulic cylinder and given displacement is made to have deviation, but hydraulic cylinder cannot adjust again at once, roll-force will be made so not enough, workpiece front end Quality Down.In order to improve the quality of production and the efficiency of milling train, hydraulic system can must be made a response rapidly when being subject to suddenly load shock.
Summary of the invention
Technical scheme of the present invention mainly increases an adjustment branch road on the branch road of original rolling mill hydraulic system rod chamber, by the pressure regulating the pressure of rod chamber to carry out hydraulic control cylinder rodless cavity, regulate route electromagnetic throttle valve and a two-bit triplet solenoid directional control valve composition, electromagnetic throttle valve the size in damping adjusting hole can come the pressure of regulator solution cylinder pressure rod chamber, the break-make of two-bit triplet solenoid directional control valve control and regulation branch road.When hydraulic cylinder stretches out but do not touch steel plate time, solenoid directional control valve is energized, now the fluid of hydraulic cylinder rod chamber gets back to fuel tank by electromagnetic throttle valve, electromagnetic throttle valve damping hole aperture is transferred to a less position, hydraulic cylinder rod chamber is made to have very large back pressure, hydraulic cylinder rodless cavity pressure constantly increases thereupon, when hydraulic cylinder touches load, hydraulic cylinder receives impact, rod chamber pressure reduces suddenly, solenoid directional control valve power-off, hydraulic cylinder oil return passing ratio servo valve oil return box, because the valve port opening degree of now proportional servo valve is also larger, therefore the back pressure of oil return circuit suddenly disappears, original like this suppressing will abrupt release at the pressure of rodless cavity, power output is increased suddenly, just can very smoothly steel plate thicker for thickness be cut off.
Being contemplated that of patent of the present invention: regulate oil circuit by increasing by one, the pressure of regulator solution cylinder pressure rodless cavity, make hydraulic cylinder rodless cavity before contact load can put aside very large energy, in the moment of hydraulic cylinder contact load, the unexpected pressure release of rod chamber, the energy that rodless cavity is put aside in abrupt release, thus increases power output.So only need increase the power output that two elements just can increase system greatly in original system, improve the utilization rate of system bearing energy force-summing device.
The beneficial effect of patent of the present invention is mainly manifested in: can when original rolling mill hydraulic system structure is constant, simple increase by two elements just can increase the power output of milling train, improve rolling mill characteristic and stability, by the method control system power output of hydraulic control.The system architecture increased is simple, be easy to operation, with low cost, applied widely.
accompanying drawing explanation:
Fig. 1 is novel rolling mill hydraulic system principle figure:
specific implementation method:
Specific implementation method: Fig. 1 is rolling mill hydraulic system schematic diagram, in figure with the part that dotted line frame is lived be regulate branch road, when hydraulic cylinder stretches out, the electromagnet of two-bit triplet solenoid directional control valve 1 obtains electric, the fluid of hydraulic cylinder rod chamber flows back to fuel tank by regulating branch road, proportional throttle valve 2 valve port is transferred to very little, hydraulic cylinder rod chamber pressure is raised, hydraulic cylinder rodless cavity pressure is also along with rising simultaneously, when roll contact is to steel plate time, two-bit triplet solenoid directional control valve 1 dead electricity, hydraulic cylinder rod chamber fluid flows through original system flow oil return box again, because now servo valve valve port has reached very large, so hydraulic cylinder rod chamber pressure reduces suddenly, like this, the pressure of hydraulic cylinder rodless cavity will increase suddenly, discharge very large roll-force.
Claims (2)
1. novel rolling mill hydraulic system is a kind of method by hydraulic system hydraulic control cylinder power output own, the feature of patent of the present invention is, control on the basis of asymmetric servo cylinder system at electro-hydraulic proportional servo valve, increase and regulate branch road, branch road is regulated to comprise a two-bit triplet solenoid directional control valve and a proportional throttle valve, for hydraulic control cylinder rod chamber pressure.
2. system as claimed in claim 1, when roll does not contact rolled piece, two-bit triplet solenoid directional control valve is energized, and now choke valve valve port is very little, hydraulic cylinder rod chamber pressure is raised, rodless cavity pressure increases simultaneously, in the moment of contact load, the power-off of two-bit triplet solenoid directional control valve, rod chamber pressure reduces instantaneously, rodless cavity release immense pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510581183.5A CN105080978B (en) | 2015-09-14 | 2015-09-14 | The control method of rolling mill hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510581183.5A CN105080978B (en) | 2015-09-14 | 2015-09-14 | The control method of rolling mill hydraulic system |
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| Publication Number | Publication Date |
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| CN105080978A true CN105080978A (en) | 2015-11-25 |
| CN105080978B CN105080978B (en) | 2017-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510581183.5A Active CN105080978B (en) | 2015-09-14 | 2015-09-14 | The control method of rolling mill hydraulic system |
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| CN (1) | CN105080978B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370644A (en) * | 2015-11-30 | 2016-03-02 | 北汽福田汽车股份有限公司 | Engineering machine and distribution system thereof |
| CN107288946A (en) * | 2017-07-13 | 2017-10-24 | 太原科技大学 | A kind of hydraulic circuit of pump control asymmetrical cylinder |
| CN109158430A (en) * | 2018-07-16 | 2019-01-08 | 太原理工大学 | A kind of corrugation rolls rolling mill hydraulic servo-system position compensation control method |
| CN114522986A (en) * | 2022-03-25 | 2022-05-24 | 马鞍山钢铁股份有限公司 | Roll gap adjusting structure and adjusting method for pinch roll of hot coiling box |
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| JPS5950203A (en) * | 1982-09-16 | 1984-03-23 | Sailor Pen Co Ltd | Controlling method of air cylinder |
| JPH07308704A (en) * | 1994-05-19 | 1995-11-28 | Sumitomo Metal Ind Ltd | Hydraulic screw-down device for rolling mills |
| CN203176024U (en) * | 2013-03-09 | 2013-09-04 | 山东永平再生资源有限公司 | Shearing machine hydraulic control system |
| CN203248453U (en) * | 2013-04-24 | 2013-10-23 | 浙江工商职业技术学院 | Stroke deceleration loop device |
| CN104033448A (en) * | 2013-03-08 | 2014-09-10 | 上海安莱德汽车零部件有限公司 | Buffer device used on clamp |
| CN104196782A (en) * | 2014-09-18 | 2014-12-10 | 芜湖高昌液压机电技术有限公司 | Serially-connected composite throttling speed regulating loop for lifter |
-
2015
- 2015-09-14 CN CN201510581183.5A patent/CN105080978B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5950203A (en) * | 1982-09-16 | 1984-03-23 | Sailor Pen Co Ltd | Controlling method of air cylinder |
| JPH07308704A (en) * | 1994-05-19 | 1995-11-28 | Sumitomo Metal Ind Ltd | Hydraulic screw-down device for rolling mills |
| CN104033448A (en) * | 2013-03-08 | 2014-09-10 | 上海安莱德汽车零部件有限公司 | Buffer device used on clamp |
| CN203176024U (en) * | 2013-03-09 | 2013-09-04 | 山东永平再生资源有限公司 | Shearing machine hydraulic control system |
| CN203248453U (en) * | 2013-04-24 | 2013-10-23 | 浙江工商职业技术学院 | Stroke deceleration loop device |
| CN104196782A (en) * | 2014-09-18 | 2014-12-10 | 芜湖高昌液压机电技术有限公司 | Serially-connected composite throttling speed regulating loop for lifter |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370644A (en) * | 2015-11-30 | 2016-03-02 | 北汽福田汽车股份有限公司 | Engineering machine and distribution system thereof |
| CN107288946A (en) * | 2017-07-13 | 2017-10-24 | 太原科技大学 | A kind of hydraulic circuit of pump control asymmetrical cylinder |
| CN107288946B (en) * | 2017-07-13 | 2019-03-26 | 太原科技大学 | A kind of hydraulic circuit of pump control asymmetrical cylinder |
| CN109158430A (en) * | 2018-07-16 | 2019-01-08 | 太原理工大学 | A kind of corrugation rolls rolling mill hydraulic servo-system position compensation control method |
| CN114522986A (en) * | 2022-03-25 | 2022-05-24 | 马鞍山钢铁股份有限公司 | Roll gap adjusting structure and adjusting method for pinch roll of hot coiling box |
| CN114522986B (en) * | 2022-03-25 | 2023-08-22 | 马鞍山钢铁股份有限公司 | Roll gap adjusting structure and method for pinch rolls of hot rolling box |
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| Publication number | Publication date |
|---|---|
| CN105080978B (en) | 2017-06-16 |
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