CN104668291B - A kind of down-pressing system of rolling mill - Google Patents
A kind of down-pressing system of rolling mill Download PDFInfo
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- CN104668291B CN104668291B CN201510121493.9A CN201510121493A CN104668291B CN 104668291 B CN104668291 B CN 104668291B CN 201510121493 A CN201510121493 A CN 201510121493A CN 104668291 B CN104668291 B CN 104668291B
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- down device
- screwdown gear
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Abstract
The present invention relates to a kind of down-pressing system of rolling mill, including mechanical screwdown gear, holding-down device of hydraulic, two described independent mechanical screwdown gears are separately positioned on milling train fore side and transmission side, holding-down device of hydraulic is respectively connected with each mechanical screwdown gear, the mechanical screwdown gear is installed on rolling-mill housing top；The holding-down device of hydraulic is installed between mechanical screwdown gear and working roll bearing block.Advantage is：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 is controlled using electric synchronization, in the operation of rolling, holding-down device of hydraulic detecting system forms automatic thickness control with computer, and the mechanical unjaming gear of housing screw is instead of with holding-down device of hydraulic, reasonable in design, simple structure, difficulty of processing are low, and operating cost is low, easy to maintenance, high working efficiency.
Description
Technical field
A kind of a kind of the present invention relates to down-pressing system of rolling mill, more particularly to down-pressing system of rolling mill for hot rolling production.
Background technology
At present, the down-pressing system of rolling mill (the double pressures of electric hydaulic) of metallurgy industry hot rolling is between fore side and transmission side
Clutch is installed, realize both sides can while be driven, and can driven separately requirement；It is provided with the outfan of housing screw
Thrust bearing；For preventing the accident such as steel-fastening, " seat roller " from occurring, holding-down screw mechanism is specially provided with.Prior art is manufactured
Difficulty of processing is big, and construction and installation technical sophistication increased production maintenance cost.
Content of the invention
For overcoming the deficiencies in the prior art, it is an object of the invention to provide a kind of down-pressing system of rolling mill, reduces difficulty of processing,
Construction volume is reduced, reduces 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, including mechanical screwdown gear, holding-down device of hydraulic, two described independent machinery pressures
Lower device is separately positioned on milling train fore side and transmission side, is respectively connected with holding-down device of hydraulic, institute on each mechanical screwdown gear
State mechanical screwdown gear and be installed on rolling-mill housing top；The holding-down device of hydraulic is installed on mechanical screwdown gear and work roll shaft
Between bearing.
Described mechanical screwdown gear include motor, decelerator, housing screw, screw box, thrust plate, brake,
Detecting element, screw box are fixed in rolling-mill housing, and housing screw is engaged with screw box, in housing screw lower output side
Thrust plate is provided with, thrust plate is engaged with the pressure-bearing pad in holding-down device of hydraulic.
The detecting element is by one group of the displacement transducer being arranged on inside the encoder and housing screw of electronic drive end unit
Into.
Described thrust plate is plane with pressure-bearing pad contact surface.
The holding-down device of hydraulic includes that hydraulic cylinder and detection feedback element, hydraulic cylinder are provided with detection feedback element, institute
Stating detection feedback element includes electrohydraulic servo valve, pressure transducer, 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
Using electric synchronization control, in the operation of rolling, holding-down device of hydraulic detecting system forms automatic thickness control with computer, is used in combination
Holding-down device of hydraulic instead of the mechanical unjaming gear of housing screw, and reasonable in design, simple structure, difficulty of processing are low, run into
This low, easy to maintenance, high working efficiency.
Description of the drawings
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 for 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 screws
One 21- hydraulic cylinders 22- of 14- screw box 15- thrust plate 16- brake 17- encoder 18- displacement transducers detections are anti-
Feedback element 23- pressure-bearing pads.
Specific embodiment
The present invention is described in detail with reference to Figure of description, it should be noted that the enforcement of the present invention is not limited
In following embodiment.
See Fig. 1-Fig. 5, a kind of down-pressing system of rolling mill, including mechanical screwdown gear 1, holding-down device of hydraulic 2, described two
Independent mechanical screwdown gear 1 is separately positioned on milling train fore side and transmission side, is respectively connected with liquid on each mechanical screwdown gear 1
Pressure screwdown gear 2, the mechanical screwdown gear 1 are installed on rolling-mill housing top；The holding-down device of hydraulic 2 is installed on machinery pressure
Between lower device 1 and working roll bearing block.
Wherein, mechanical screwdown gear 1 includes motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate
15th, brake 16, detecting element, screw box 14 are fixed in rolling-mill housing, and housing screw 13 is engaged with screw box 14,
13 lower output side of housing screw is provided with thrust plate 15, and thrust plate 15 is engaged with the pressure-bearing pad 23 in holding-down device of hydraulic 2.Only
Push pedal 15 is plane with 23 contact surface of pressure-bearing pad.Detecting element is by the encoder 17 and housing screw for being arranged on 11 afterbody of motor
Displacement transducer 1 inside 13 is constituted.
Holding-down device of hydraulic 2 includes that hydraulic cylinder 21 and detection feedback element 22, hydraulic cylinder 21 are provided with detection feedback element
22, the detection feedback element 22 is placed in subassembly wrapper, arrange in box electrohydraulic servo valve, pressure transducer, displacement transducer two,
Limit switch.
By 1 quick coarse adjustment roll gap of mechanical screwdown gear before steel rolling, 2 quick accurate adjustment roll gap of holding-down device of hydraulic；Rolled
In journey, 2 detecting system of holding-down device of hydraulic forms automatic thickness control (AGC) with computer, and press down system adopts electric synchronization control
System；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 by motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate
15th, brake 16, the displacement transducer 1 being installed on inside the encoder 17 and housing screw 13 of 11 afterbody of motor are constituted.
See Fig. 5, holding-down device of hydraulic 2 is main to be made up of hydraulic cylinder 21, detection feedback element 22, pressure-bearing pad 23.
See that Fig. 1-Fig. 3, the fore side and transmission side of milling train are respectively equipped with single motor 11, decelerator 12, pressure spiral shell
Silk 13, screw box 14, thrust plate 15, brake 16, it is installed in the encoder 17 and housing screw 13 of 11 afterbody of motor
1 middle mechanical of the mechanical screwdown gear connection of the displacement transducer 1 in portion, fore side and transmission side, this is different from existing at present
Some both sides are provided with the purpose that clutch reaches mechanical synchronization, but using the encoder 17 by 11 afterbody of motor and pressure
One 18 mutual feedback data of displacement transducer inside lower screw 13, reaches the effect of electric synchronization control.
See Fig. 4, be the thrust plate 15 and pressure-bearing pad 23 of plane form between housing screw 13 and hydraulic cylinder 21, by hydraulic pressure
The requirement of the self-aligning of roll bending when cylinder 21 reaches rolling.
See Fig. 5, using be equipped with electrohydraulic servo valve, pressure transducer, displacement transducer two hydraulic pressure thickness of slab depress automatically
The holding-down device of hydraulic 2 of control can lower whole drafts in as-rolled condition, even if so when there is very big pressure between roll
Roll can also be lifted.
Process control is divided into single action, two kinds of control modes of linkage, when 1 fore side of mechanical screwdown gear and transmission side link
When, using master-slave control method, at this moment transmission side machinery screwdown gear 1 is used as main driving, fore side machinery 1 conduct of screwdown gear
From driving, 17 signal of encoder enters converter, and one 18 signal of displacement transducer enters PLC, and main driving is speed and torque value
Sender is given from driving, follows main driving from driving in terms of speed and moment of torsion two, so as to form closed loop control, reach transmission side and
The electric synchronization control of fore side.
The present invention is 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；Pressure
Lower system is controlled using electric synchronization, and in the operation of rolling, holding-down device of hydraulic detecting system forms automatic thickness control with computer
System, and the mechanical unjaming gear of housing screw is instead of with holding-down device of hydraulic, reasonable in design, simple structure, difficulty of processing are low,
Operating cost is low, easy to maintenance, high working efficiency.
Claims (2)
1. a kind of down-pressing system of rolling mill, it is characterised in that including mechanical screwdown gear, holding-down device of hydraulic, two independent machines
Tool screwdown gear is separately positioned on milling train fore side and transmission side, is respectively connected with hydraulic pressing dress on each mechanical screwdown gear
Put, the mechanical screwdown gear is installed on rolling-mill housing top；The holding-down device of hydraulic is installed on mechanical screwdown gear and work
Make between roll bearing seat；The mechanical screwdown gear includes motor, decelerator, housing screw, screw box, thrust plate, system
Dynamic device, detecting element, screw box are fixed in rolling-mill housing, and housing screw is engaged with screw box, in housing screw bottom
Outfan is provided with thrust plate, and thrust plate is engaged with the pressure-bearing pad in holding-down device of hydraulic；The detecting element is by being arranged on electricity
Displacement transducer one inside the encoder and housing screw of motivation afterbody is constituted；Described thrust plate with pressure-bearing pad contact surface is
Plane.
2. a kind of down-pressing system of rolling mill according to claim 1, it is characterised in that the holding-down device of hydraulic includes hydraulic pressure
Cylinder and detection feedback element, hydraulic cylinder are provided with detection feedback element, and the detection feedback element includes 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104668291A CN104668291A (en) | 2015-06-03 |
| CN104668291B true CN104668291B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Family Cites Families (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 |
| CN101462121B (en) * | 2007-12-19 | 2011-05-11 | 中冶赛迪工程技术股份有限公司 | Wire rod bar blooming mill |
| CN101972779B (en) * | 2010-11-05 | 2012-06-06 | 南京钢铁股份有限公司 | Zero position calibrating and roll gap positioning method for four-roller reversible mill |
| 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 |
| JP5818511B2 (en) * | 2011-05-25 | 2015-11-18 | 株式会社神戸製鋼所 | Automatic plate thickness control method |
| CN102581010B (en) * | 2012-02-14 | 2014-08-27 | 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 |
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- 2015-03-17 CN CN201510121493.9A patent/CN104668291B/en active Active
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| CN104668291A (en) | 2015-06-03 |
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