CN106607458A - A screw down system of a rolling mill - Google Patents
A screw down system of a rolling mill Download PDFInfo
- Publication number
- CN106607458A CN106607458A CN201510682598.1A CN201510682598A CN106607458A CN 106607458 A CN106607458 A CN 106607458A CN 201510682598 A CN201510682598 A CN 201510682598A CN 106607458 A CN106607458 A CN 106607458A
- Authority
- CN
- China
- Prior art keywords
- screw down
- hydraulic
- mechanical
- rolling mill
- holding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/22—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis mechanically, e.g. by thrust blocks, inserts for removal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
- B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention relates to a screw down system of a rolling mill. The screw down system of a rolling mill comprises mechanical screw down devices and hydraulic screw down devices. The two independent mechanical screw down devices are arranged on the operation side and the transmission side of a rolling mill; each mechanical screw down device is connected with one hydraulic screw down device; the mechanical screw devices are installed on the upper portion of a rack of the rolling mill; the hydraulic screw down devices are installed between the mechanical screw down devices and working roller bearing bases. Before steel rolling, the mechanical screw down devices regulate roller gaps rapidly and coarsely and the hydraulic screw down devices regulate the roller gaps rapidly and finely; the screw down system employs electrical synchronous control; during rolling, a hydraulic screw down device detection system and a computer form automatic thickness control; the hydraulic screw down devices replace mechanical loosening devices for screw down screws. The screw down system is reasonable in design, simple in structure, low in machining difficulty, low in operating 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, more particularly to a kind of down-pressing system of rolling mill for hot rolling production.
Background technology
At present, the down-pressing system of rolling mill of metallurgy industry hot rolling（Electronic Hydraulic Double pressure）Clutch is installed between fore side and transmission side, realize both sides can while be driven, and can driven separately requirement；The outfan of housing screw is provided with thrust bearing；To prevent the accident such as steel-fastening, " seat roller " from occurring, holding-down screw mechanism is specially provided with.Prior art manufacture difficulty of processing is big, and construction and installation technical sophistication increased production maintenance cost.
The content of the invention
To overcome 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, 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, 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, and holding-down device of hydraulic is respectively connected with each mechanical screwdown gear, and 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.
Described mechanical screwdown gear includes motor, decelerator, housing screw, screw box, thrust plate, brake, detecting element, screw box is fixed in rolling-mill housing, housing screw is engaged with screw box, thrust plate is provided with housing screw lower output side, thrust plate is engaged with the pressure-bearing pad in holding-down device of hydraulic.
The detecting element is made up of the displacement transducer inside being arranged on the encoder of electronic drive end unit and housing screw.
Described thrust plate is plane with pressure-bearing pad contact surface.
The holding-down device of hydraulic includes hydraulic cylinder and detection feedback element, and hydraulic cylinder is provided with detection feedback element, and the 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 is using electric synchronization control, holding-down device of hydraulic detecting system forms automatic thickness control with computer in the operation of rolling, and instead of the mechanical unjaming gear of housing screw with holding-down device of hydraulic, it is reasonable in design, simple structure, difficulty of processing is low, and operating cost is low, it is 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 figure l.
In figure：1st, mechanical 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, 21, hydraulic cylinder 22, detection feedback element.
Specific embodiment
As shown in Figure 1 and Figure 2, a kind of down-pressing system of rolling mill, including mechanical screwdown gear l, holding-down device of hydraulic 2, two described independent mechanical screwdown gears 1 are separately positioned on milling train fore side and transmission side, holding-down device of hydraulic 2 is respectively connected with each mechanical screwdown gear l, the mechanical screwdown gear l is installed on rolling-mill housing top；The holding-down device of hydraulic 2 is installed between mechanical screwdown gear l and working roll bearing block.
Wherein, mechanical screwdown gear l includes 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 is engaged with screw box 14, thrust plate 15 is provided with the lower output side of housing screw 13, thrust plate 15 is engaged with the pressure-bearing pad in holding-down device of hydraulic 2.Thrust plate 15 is plane with pressure-bearing pad contact surface.Detecting element is made up of the displacement transducer 18 inside being arranged on the encoder 17 of the afterbody of motor 11 and housing screw 13.
Holding-down device of hydraulic 2 includes hydraulic cylinder 21 and detection feedback element 22, and hydraulic cylinder 21 is provided with detection feedback element 22, and the detection feedback element 22 is placed in subassembly wrapper, and electrohydraulic servo valve, pressure transducer, displacement transducer two, limit switch are arranged in box.
By the quick coarse adjustment roll gap of mechanical screwdown gear l before steel rolling, the quick accurate adjustment roll gap of holding-down device of hydraulic 2；The detecting system of holding-down device of hydraulic 2 forms automatic thickness control (AGC) with computer in the operation of rolling, and press down system is using electric synchronization control；The function of the unjaming gear of housing screw 13 is instead of with holding-down device of hydraulic 2.Mechanical screwdown gear l by motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate 15, brake 16, be installed on the encoder 17 of the afterbody of motor 11 and housing screw 13 inside displacement transducer 18 constitute.Holding-down device of hydraulic 2 is main to be made up of hydraulic cylinder 21, detection feedback element 22, pressure-bearing pad.The fore side and transmission side of milling train is respectively equipped with single motor 11, decelerator 12, housing screw 13, screw box 14, thrust plate 15, brake 16, displacement transducer 18 inside being installed on the encoder 17 of the afterbody of motor 11 and housing screw 13, mechanical connection in the middle of the mechanical screwdown gear l of fore side and transmission side, this is different from current existing both sides and is provided with the purpose that clutch reaches mechanical synchronization, but adopt the mutual feedback data of displacement transducer 18 inside the encoder 17 and housing screw 13 by the afterbody of motor 11, reach the effect of electric synchronization control.It is the thrust plate 15 and pressure-bearing pad of plane form between housing screw 13 and hydraulic cylinder 21, the requirement of the autonomous regulation of mental activities of roll bending when reaching rolling by hydraulic cylinder 21.Using be equipped with electrohydraulic servo valve, pressure transducer, the automatic press control of hydraulic pressure thickness of slab of displacement transducer two holding-down device of hydraulic 2 can lower whole drafts in as-rolled condition, even if so roll can be also lifted when there is very big pressure between roll.
Process control is divided into single action, two kinds of control modes of linkage, when mechanical screwdown gear l fore sides and transmission side link, using master-slave control method, at this moment transmission side machinery screwdown gear l is used as main driving, fore side machinery screwdown gear l is used as from driving, the signal of encoder 17 enters converter, the signal of displacement transducer 18 enters PLC, it is main to drive speed and torque value sender to from driving, main driving is followed from driving in terms of speed and moment of torsion two, so as to form closed loop control, the electric synchronization control of transmission side and fore side is reached.
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；Press down system is using electric synchronization control, holding-down device of hydraulic detecting system forms automatic thickness control with computer in the operation of rolling, and instead of the mechanical unjaming gear of housing screw with holding-down device of hydraulic, it is reasonable in design, simple structure, difficulty of processing is low, and operating cost is low, it is easy to maintenance, high working efficiency.
Claims (5)
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 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.
2. a kind of down-pressing system of rolling mill according to claim l, it is characterised in that：The mechanical screwdown gear includes motor, decelerator, housing screw, screw box, thrust plate, brake, detecting element, screw box is fixed in rolling-mill housing, housing screw is engaged with screw box, thrust plate is provided with housing screw lower output side, thrust plate is engaged 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, it is characterised in that：The detecting element is made up of the displacement transducer inside being arranged on the encoder of electronic drive end unit and housing screw.
4. a kind of down-pressing system of rolling mill according to claim 2, it is characterised in that：Described thrust plate is plane with pressure-bearing pad contact surface.
5. a kind of down-pressing system of rolling mill according to claim l, it is characterised in that：The holding-down device of hydraulic includes hydraulic cylinder and detection feedback element, and hydraulic cylinder is provided with detection feedback element, and the detection feedback element includes electrohydraulic servo valve, pressure transducer, displacement transducer two, limit switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682598.1A CN106607458A (en) | 2015-10-21 | 2015-10-21 | A screw down system of a rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510682598.1A CN106607458A (en) | 2015-10-21 | 2015-10-21 | A screw down system of a rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106607458A true CN106607458A (en) | 2017-05-03 |
Family
ID=58610359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510682598.1A Pending CN106607458A (en) | 2015-10-21 | 2015-10-21 | A screw down system of a rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106607458A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672902A (en) * | 2020-06-19 | 2020-09-18 | 武汉钢铁有限公司 | Multifunctional test rolling mill capable of rolling special-shaped raw materials |
-
2015
- 2015-10-21 CN CN201510682598.1A patent/CN106607458A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111672902A (en) * | 2020-06-19 | 2020-09-18 | 武汉钢铁有限公司 | Multifunctional test rolling mill capable of rolling special-shaped raw materials |
| CN111672902B (en) * | 2020-06-19 | 2022-07-08 | 武汉钢铁有限公司 | Multifunctional test rolling mill capable of rolling special-shaped raw materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170503 |
|
| WD01 | Invention patent application deemed withdrawn after publication |