CN104668291A - Screw down system of rolling machine - Google Patents
Screw down system of rolling machine Download PDFInfo
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- CN104668291A CN104668291A CN201510121493.9A CN201510121493A CN104668291A CN 104668291 A CN104668291 A CN 104668291A CN 201510121493 A CN201510121493 A CN 201510121493A CN 104668291 A CN104668291 A CN 104668291A
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Abstract
The invention relates to a screw down system of a rolling machine. The screw down system comprises two independent mechanical screw down devices and hydraulic pressing devices, wherein the mechanical pressing devices are respectively arranged on the operation side and the driving side of the rolling machine; each mechanical pressing device is connected with one hydraulic screw down device; the mechanical screw down devices are arranged on the upper part of the machine frame of the rolling machine; the hydraulic screw down devices are arranged between the mechanical screw down devices and working roller bearing blocks. The screw down system has the advantages that before steel rolling, a roller seam is quickly and roughly adjusted by the mechanical screw down devices, and the roller seam is quickly and finely adjusted by the hydraulic screw down devices, the screw down system is electrically and synchronously controlled, so that in a rolling process, a hydraulic screw down device detecting system and a computer form automatic thickness control; the hydraulic screw down devices replace a mechanical loosening device of a screw-down screw, so that the pressing system is reasonable in design, simple in structure, low in machining difficulty, low in operation cost, convenient to maintain, and high in working efficiency.
Description
Technical field
The present invention relates to a kind of down-pressing system of rolling mill, particularly relate to a kind of down-pressing system of rolling mill produced for hot rolling.
Background technology
At present, the down-pressing system of rolling mill of metallurgy industry hot rolling (electronic-Hydraulic Double pressure) is provided with clutch between fore side and transmission side, and realizing both sides can transmission simultaneously, again can the requirement of driven separately; The output of housing screw is provided with thrust bearing; For preventing the accident such as steel-fastening, " seat roller " from occurring, be specially provided with holding-down screw mechanism.It is large that prior art manufactures difficulty of processing, and construction and installation technical sophistication, adds production maintenance cost.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of this invention is to provide a kind of down-pressing system of rolling mill, reducing difficulty of processing, reduce construction volume, reduce production maintenance cost.
For achieving the above object, the present invention is achieved through the following technical solutions:
A kind of down-pressing system of rolling mill, comprise mechanical screwdown gear, holding-down device of hydraulic, described two independently mechanical screwdown gear be separately positioned on milling train fore side and transmission side, each mechanical screwdown gear is all connected with holding-down device of hydraulic, and described mechanical screwdown gear is installed on rolling-mill housing top; Described holding-down device of hydraulic is installed between mechanical screwdown gear and working roll bearing block.
Described mechanical screwdown gear comprises motor, decelerator, housing screw, screw box, thrust plate, brake, detecting element, screw box is fixed in rolling-mill housing, housing screw engages with screw box, be provided with thrust plate at housing screw lower output side, thrust plate matches with the pressure-bearing pad in holding-down device of hydraulic.
Described detecting element is made up of the displacement transducer one of the encoder and housing screw inside that are arranged on motor afterbody.
Described thrust plate and pressure-bearing pad contact surface are plane.
Described holding-down device of hydraulic comprises hydraulic cylinder and detects feedback element, and hydraulic cylinder is provided with detection feedback element, and described detection feedback element comprises electrohydraulic servo valve, pressure sensor, displacement transducer two, limit switch.
Compared with prior art, the invention has the beneficial effects as follows:
By the quick coarse adjustment roll gap of mechanical screwdown gear before steel rolling, the quick accurate adjustment roll gap of holding-down device of hydraulic; Press down system adopts electric synchronization to control, in the operation of rolling, holding-down device of hydraulic detection system and computer form automatic thickness and control, and the mechanical unjaming gear of housing screw is instead of with holding-down device of hydraulic, reasonable in design, structure is simple, and difficulty of processing is low, and operating cost is low, easy to maintenance, operating efficiency is high.
Accompanying drawing explanation
Fig. 1 is the front view of down-pressing system of rolling mill.
Fig. 2 is the sectional view of Fig. 1.
Fig. 3 is the mechanical screwdown gear being separately positioned on fore side and transmission side.
Fig. 4 is the structural representation of thrust plate and pressure-bearing pad.
Fig. 5 is the structural representation of holding-down device of hydraulic.
In figure: 1-machinery screwdown gear 2-holding-down device of hydraulic 11-motor 12-decelerator 13-housing screw 14-screw box 15-thrust plate 16-brake 17-encoder 18-displacement transducer one 21-hydraulic cylinder 22-detects feedback element.
Detailed description of the invention
Below in conjunction with Figure of description, the present invention is described in detail, but it should be noted that enforcement of the present invention is not limited to following embodiment.
See Fig. 1-Fig. 5, a kind of down-pressing system of rolling mill, comprise mechanical screwdown gear 1, holding-down device of hydraulic 2, described two independently mechanical screwdown gear 1 be separately positioned on milling train fore side and transmission side, each mechanical screwdown gear 1 is all connected with holding-down device of hydraulic 2, and described mechanical screwdown gear 1 is installed on rolling-mill housing top; Described holding-down device of hydraulic 2 is installed between mechanical screwdown gear 1 and working roll bearing block.
Wherein, machinery screwdown gear 1 comprises motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate 15, brake 16, detecting element, screw box 14 is fixed in rolling-mill housing, housing screw 13 engages with screw box 14, be provided with thrust plate 15 at housing screw 13 lower output side, thrust plate 15 matches with the pressure-bearing pad in holding-down device of hydraulic 2.Thrust plate 15 and pressure-bearing pad contact surface are plane.Detecting element is made up of the displacement transducer 1 of the encoder 17 and housing screw 13 inside that are arranged on motor 11 afterbody.
Holding-down device of hydraulic 2 comprises hydraulic cylinder 21 and detects feedback element 22, and hydraulic cylinder 21 is provided with and detects feedback element 22, and described detection feedback element 22 is placed in subassembly wrapper, arranges electrohydraulic servo valve, pressure sensor, displacement transducer two, limit switch in box.
By mechanical screwdown gear 1 coarse adjustment roll gap fast before steel rolling, holding-down device of hydraulic 2 is accurate adjustment roll gap fast; In the operation of rolling, holding-down device of hydraulic 2 detection system and computer form automatic thickness and control (AGC), and press down system adopts electric synchronization to control; The function of the unjaming gear of housing screw 13 is instead of with holding-down device of hydraulic 2.
See Fig. 3, mechanical screwdown gear 1 is made up of the displacement transducer 1 of motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate 15, brake 16, the encoder 17 being installed on motor 11 afterbody and housing screw 13 inside.See Fig. 5, holding-down device of hydraulic 2 is primarily of hydraulic cylinder 21, detection feedback element 22, pressure-bearing pad composition.
See Fig. 1-Fig. 3, the fore side of milling train and transmission side are respectively equipped with independent motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate 15, brake 16, be installed on the encoder 17 of motor 11 afterbody and the displacement transducer 1 of housing screw 13 inside, fore side is connected with the middle mechanical of mechanical screwdown gear 1 of transmission side, this is different from current existing both sides and is provided with the object that clutch reaches mechanical synchronization, but adopt by the encoder 17 of motor 11 afterbody and the mutual feedback data of the displacement transducer 1 of housing screw 13 inside, reach the effect that electric synchronization controls.
Seeing Fig. 4, is thrust plate 15 and the pressure-bearing pad of plane form between housing screw 13 and hydraulic cylinder 21, the requirement of the self-aligning that roll bends when reaching rolling by hydraulic cylinder 21.
See Fig. 5, adopt the holding-down device of hydraulic 2 controlled under being equipped with the hydraulic pressure thickness of slab automatic pressing of electrohydraulic servo valve, pressure sensor, displacement transducer two can lower whole drafts in as-rolled condition, even if so also can roll be lifted when roll shop building existence very large pressure.
Process control is divided into single action, interlock two kinds of control modes, when mechanical screwdown gear 1 fore side and transmission side interlock, adopt master-slave control method, at this moment transmission side machinery screwdown gear 1 is as main driving, fore side machinery screwdown gear 1 is as from driving, encoder 17 signal enters frequency converter, displacement transducer 1 signal enters PLC, main driving gives speed and torque value sender from driving, in speed and moment of torsion two, main driving is followed from driving, thus formation closed-loop control, the electric synchronization reaching transmission side and fore side controls.
The present invention before steel rolling by the quick coarse adjustment roll gap of mechanical screwdown gear, the quick accurate adjustment roll gap of holding-down device of hydraulic; Press down system adopts electric synchronization to control, in the operation of rolling, holding-down device of hydraulic detection system and computer form automatic thickness and control, and the mechanical unjaming gear of housing screw is instead of with holding-down device of hydraulic, reasonable in design, structure is simple, and difficulty of processing is low, and operating cost is low, easy to maintenance, operating efficiency is high.
Claims (5)
1. a down-pressing system of rolling mill, it is characterized in that, comprise mechanical screwdown gear, holding-down device of hydraulic, described two independently mechanical screwdown gear be separately positioned on milling train fore side and transmission side, each mechanical screwdown gear is all connected with holding-down device of hydraulic, and described mechanical screwdown gear is installed on rolling-mill housing top; Described holding-down device of hydraulic is installed between mechanical screwdown gear and working roll bearing block.
2. a kind of down-pressing system of rolling mill according to claim 1, it is characterized in that, described mechanical screwdown gear comprises motor, decelerator, housing screw, screw box, thrust plate, brake, detecting element, screw box is fixed in rolling-mill housing, housing screw engages with screw box, be provided with thrust plate at housing screw lower output side, thrust plate matches with the pressure-bearing pad in holding-down device of hydraulic.
3. a kind of down-pressing system of rolling mill according to claim 2, is characterized in that, described detecting element is made up of the displacement transducer one of the encoder and housing screw inside that are arranged on motor afterbody.
4. a kind of down-pressing system of rolling mill according to claim 2, is characterized in that, described thrust plate and pressure-bearing pad contact surface are plane.
5. a kind of down-pressing system of rolling mill according to claim 1, it is characterized in that, described holding-down device of hydraulic comprises hydraulic cylinder and detects feedback element, hydraulic cylinder is provided with detection feedback element, and described detection feedback element comprises electrohydraulic servo valve, pressure sensor, displacement transducer two, limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510121493.9A CN104668291B (en) | 2015-03-17 | 2015-03-17 | A kind of down-pressing system of rolling mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510121493.9A CN104668291B (en) | 2015-03-17 | 2015-03-17 | A kind of down-pressing system of rolling mill |
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| CN104668291A true CN104668291A (en) | 2015-06-03 |
| CN104668291B CN104668291B (en) | 2017-03-15 |
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| CN201510121493.9A Active CN104668291B (en) | 2015-03-17 | 2015-03-17 | A kind of down-pressing system of rolling mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026440A (en) * | 2019-03-20 | 2019-07-19 | 宁波中超机器有限公司 | Holding-down device of hydraulic and its calibration method for milling train |
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| JPH04305307A (en) * | 1991-03-29 | 1992-10-28 | Nippon Steel Corp | Device for controlling thickness of steel sheet |
| JP2003311308A (en) * | 2002-04-15 | 2003-11-05 | Nisshin Steel Co Ltd | Method and device for controlling thickness when performing temper rolling |
| CN101462121A (en) * | 2007-12-19 | 2009-06-24 | 中冶赛迪工程技术股份有限公司 | Wire rod bar blooming mill |
| CN101972779A (en) * | 2010-11-05 | 2011-02-16 | 南京钢铁股份有限公司 | Four-roller reversible mill zero position calibrating and roll gap positioning method |
| CN201950071U (en) * | 2010-12-17 | 2011-08-31 | 中冶南方工程技术有限公司 | High precision automatic thickness control device based on thickness meter segment monitoring |
| CN102581010A (en) * | 2012-02-14 | 2012-07-18 | 北京京诚之星科技开发有限公司 | Two-roll horizontal mill |
| CN102794313A (en) * | 2011-05-25 | 2012-11-28 | 株式会社神户制钢所 | Automatic plate thickness control method and rolling mill |
| CN204602814U (en) * | 2015-03-17 | 2015-09-02 | 鞍钢集团工程技术有限公司 | A kind of down-pressing system of rolling mill |
-
2015
- 2015-03-17 CN CN201510121493.9A patent/CN104668291B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04305307A (en) * | 1991-03-29 | 1992-10-28 | Nippon Steel Corp | Device for controlling thickness of steel sheet |
| JP2003311308A (en) * | 2002-04-15 | 2003-11-05 | Nisshin Steel Co Ltd | Method and device for controlling thickness when performing temper rolling |
| CN101462121A (en) * | 2007-12-19 | 2009-06-24 | 中冶赛迪工程技术股份有限公司 | Wire rod bar blooming mill |
| CN101972779A (en) * | 2010-11-05 | 2011-02-16 | 南京钢铁股份有限公司 | Four-roller reversible mill zero position calibrating and roll gap positioning method |
| CN201950071U (en) * | 2010-12-17 | 2011-08-31 | 中冶南方工程技术有限公司 | High precision automatic thickness control device based on thickness meter segment monitoring |
| CN102794313A (en) * | 2011-05-25 | 2012-11-28 | 株式会社神户制钢所 | Automatic plate thickness control method and rolling mill |
| CN102581010A (en) * | 2012-02-14 | 2012-07-18 | 北京京诚之星科技开发有限公司 | Two-roll horizontal mill |
| CN204602814U (en) * | 2015-03-17 | 2015-09-02 | 鞍钢集团工程技术有限公司 | A kind of down-pressing system of rolling mill |
Non-Patent Citations (1)
| Title |
|---|
| 丁修堃，张殿华，王贞祥等: "《高精度板带钢厚度控制的理论与实践》", 31 March 2009, article ""电动-液压压下位置自动控制系统"", pages: 133-136 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026440A (en) * | 2019-03-20 | 2019-07-19 | 宁波中超机器有限公司 | Holding-down device of hydraulic and its calibration method for milling train |
| CN110026440B (en) * | 2019-03-20 | 2023-10-20 | 宁波中超机器有限公司 | Hydraulic pressing device for rolling mill and calibration method thereof |
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| Publication number | Publication date |
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| CN104668291B (en) | 2017-03-15 |
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