CN209206050U - Operation roll of mill axial compression detection device - Google Patents
Operation roll of mill axial compression detection device Download PDFInfo
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- CN209206050U CN209206050U CN201822002884.0U CN201822002884U CN209206050U CN 209206050 U CN209206050 U CN 209206050U CN 201822002884 U CN201822002884 U CN 201822002884U CN 209206050 U CN209206050 U CN 209206050U
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Abstract
The utility model discloses a kind of operation roll of mill axial compression detection devices, including axial pressing device, electro-hydraulic dynamometric system, location prediction system；Axial force realizes on-line checking when the utility model can roll work to strip-mill strip, and forecast milling train axial force transfinites and monitor in real time situation, provides a practical parameter for milling equipment running precision and milled sheet shape precision controlling.The utility model passes through detection quantization axial force and displacement parameter, determine that axial force is abnormal in time, investigation is carried out to the not parallel intersection degree of operation roll of mill roller system, symmetry rolling situation, working roll and rolled piece friction condition and strip-mill strip work housing equipment running precision, real time data is provided, the quantization parameter foundation of science is provided for milling equipment maintenance, ensure the stably and controllable operation of milling train, the burst devices accidents such as motor thrust bearing, workroll bearing saggar and locking baffle bolt fracture are prevented, are the reliable guarantees of technological progress cost efficiency.
Description
Technical field
The utility model relates to a kind of metal working equipment operating mechanism, specifically a kind of operation roll of mill is axially pressed
Tight detection device.
Background technique
Existing Work Roll of Strip Rolling Mill axial force detection mode mostly uses resistance-strain type single-sensor, and is
Passive compression work, no balance, which compresses, eliminates gap function, and when power that is hit is easy to be damaged, and without position detecting function.Simultaneously
There are use costs it is high, the service life is short the defects of, milling train on-line checking demand cannot be met for a long time, axial force and position can not be also provided
Move accurate control important parameter, it is even more impossible to participate in Mill shape equal accuracy control, cause equipment in Rolling Mill precision controlling insufficient and
Axial float accident frequently occurs.
The 75 strip production lines in the country at present, working roll axial locking device only have the machine of locking working roll axial float
Tool fixes limit function, can not real-time prediction work roll axial force size and work roll shifting data.Usual milling train work
Roller apparatus axial force does not monitor, and only causes the accident when axial force beyond baffle bolt rupture pull force is locked, divides just now afterwards
Analysis is caused by axial force is excessive, and further analysis is searched the excessive reason of axial force and handled, and equipment operation is not reliable
Data supporting can not realize axial force ageing-tendency management；Since irregularly to intersect play serious for roller system of rolling mill axis, also can
Surmount rolling mill main motor magnetic field restoring force, leads to the easy scaling loss of motor thrust disk；Operation roll of mill play frequently also will increase roller consumption
Cost 25%, operation roll of mill play also repeatedly cause the accidents such as working roll bearing block saggar
In addition, there is no an axial position monitoring for operation roll of mill, roll gap abrasion and working roll axial direction dislocation amount when rolling
When changing, certain monitoring means are lacked to production board shape pass stability.Working roll goes out in the normal operation of rolling of milling train
Existing axial float, directly will affect product strip shape quality, makes wedge-shaped shape wave increase or the curved equal flatness defects of S occurs.It is rolled including CVC
It is compressed between the assembly of machine working roll roller and milling train convex block by roll-bending cylinder or compensating cylinder, working roll is assembled by roll shifting hydraulic cylinder
Position is carried out without roll shifting control panel shape under steel rolling state, and CVC milling train generally also forbids working roll to have under as-rolled condition
Axial float occurs, and working roll axial float controls equipment construction complexity and cost is high.Existing conventional mill as-rolled condition
Working roll axial displacement does not monitor strip-mill strip single chassis milled sheet shape stabilization, existing operation roll of mill roller assembled shaft
The practical not feedback parameter of means is positioned and forecast to accurate minute yardstick, is also not engaged in the correlative study money of Strip Shape Control
Material.
According to operation roll of mill axial force detection device installation site, at present outer portion research and development institution, the country to axial force into
The detection gone is generally divided into following three classes, and one kind is mounted in bearing seat of operation roll of mill, with 2200 aluminium foil of Bohai Aluminum Smelter
Milling train is representative, passes through the allusion quotation of bearing block inner end cap pressure head on-line checking work roll axial force and resistance strain type sensor
Type represents, and there are workroll bearings to assemble correlated parts thermal deformation, interferes defect to pressure head output signal；Second class, axial force
Detecting element is mounted on motor side load side, and if Chengde online motor thrust end is arranged, sensor is mounted on rotating part,
Signal monitors axial force using wireless transmission, by telemetry system, due to transmitting the detection side of axial force by mill drive axis
Formula, transmission shaft transmitting decaying is larger, and the actually detected accuracy of axial force is insufficient；Third class is mounted on operation roll of mill fore side
At bearing block flange, if Baosteel 2050 is using working roll bearing block and convex block setting contact and bearing block and baffle plate setting ring
Shape resistance strain sensor, by realizing axial force detection with working roll latch and the fixed limit cooperation of rack (convex block).By
In mill milling sting throw steel it is instantaneous, working roll vibration play direction convert, to transmission axis direction play when, bearing block and
There are gap between baffle plate setting ring resistance strain transducer, such detecting element does not eliminate the function in gap, detecting element
Enter the impurity such as iron scale between baffle, that there are errors is larger for detection data.Running environment is poor, and bearing block exists a large amount of cold
But water is mingled with iron scale spray, and a large amount of vapor high temperature etc., and is exceedingly fast to detecting element damage at bearing block flange,
Sometimes the operation of cleaning iron scale was just failed less than 10 days not in time, can not meet online axial force detection demand for a long time, separately have
Baosteel rough rolling mill uses Double Oblique Wedge axial adjusting device, also only to it is axial value adjustment be fixed compress to have no to detect report achievement in advance
Can, and its complicated in mechanical structure, Developing Extension space are limited.
In conclusion existing Work Roll of Strip Rolling Mill axial force detection mode, mostly using resistance-strain type, piezomagnetic,
Piezoelectric type, the strong formula force snesor of vibration etc., detector precision is higher, but is passive compression work, and no balance, which compresses, eliminates gap
Function is easy when the power that is hit impaired；And without position detecting function, exist simultaneously the use cost high life it is short the defects of, cannot
Meet milling train on-line checking demand for a long time, can not also provide axial force and the accurate control important parameter of displacement, it is even more impossible to participate in rolling
Machine plate shape equal accuracy control.Existing axial force and displacement on-line checking data are mainly used for research field, long-term in actual production
On-line synchronous detection, and participate in product precision control and equipment operating maintenance etc. application can not inquire data.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of with the monitoring of online axial force and displacement monitoring
Operation roll of mill axial compression detection device.
The technical scheme adopted by the utility model to solve the technical problem is as follows: operation roll of mill axial compression detection dress
It sets, it is characterised in that: including axial pressing device, electro-hydraulic dynamometric system, location prediction system；
Axial pressing device is mounted on milling train fore side convex block, axial pressing device include axial work hold-down mechanism,
Pressure Block, spherical pressure bearing pad, the safe stud of axial limiter, pre-load nut, sealing element, guiding feather key, the two sides of a working roll
It is separately installed with an axial pressing device；
Electro-hydraulic dynamometric system includes dynamometry servo hydraulic cylinder, pressure head sensor, electromagnetism overflow relief valve, energy storage equipment, liquid
Lock, solenoid valve, electro-hydraulic servo control, electric control circuit are pressed, electro-hydraulic dynamometric system is mounted on axial pressing device, pressure head sensor
It is arranged on Pressure Block and convex block sideskid；
Location prediction system includes 4 sets of dynamometry servo hydraulic cylinders, displacement sensor, hydraulic lock, electro-hydraulic servo control, automatically controlled
Circuit, location prediction system are mounted on axial pressing device, and every working roll roller assembles axially mounted 4 sets of displacement sensings
Device, respectively to working roll bearing block two sides and upper and lower 4 points of progress displacement detecting.
Wherein, 2 positioning pins are provided in dynamometry servo hydraulic cylinder.
Wherein, dynamometry servo hydraulic cylinder, pressure head sensor, electromagnetism overflow relief valve, energy storage equipment, hydraulic lock, solenoid valve,
Electro-hydraulic servo control, electric control circuit constitute a pressure closed-loop control system.
The beneficial effects of the utility model are: axial force is realized when the utility model can roll work to strip-mill strip
Line detection, forecast milling train axial force transfinites and monitor situation, for milling equipment running precision and milled sheet shape precision controlling
One practical parameter is provided.The utility model determines that axial force is abnormal by detection quantization axial force and displacement parameter in time, right
The not parallel intersection degree of operation roll of mill roller system, symmetry rolling situation, working roll and rolled piece friction condition and strip-mill strip work
Make chassis equipment running precision and investigation offer real time data be provided, provides the quantization parameter foundation of science for milling equipment maintenance,
Ensure the stably and controllable operation of milling train, prevents motor thrust bearing, workroll bearing saggar and locking baffle bolt fracture etc.
Burst devices accident is the reliable guarantee of technological progress cost efficiency.
Detailed description of the invention
Fig. 1 is that the utility model is mounted on the stereochemical structure partial schematic diagram on milling train；
Fig. 2 is the perspective view of axial pressing device；
Fig. 3 is the cross-sectional view of axial pressing device；
Fig. 4 is the cross-sectional view of dynamometry servo-cylinder
Fig. 5 is hydraulic APC control block diagram；
Fig. 6 is electrichydraulic control schematic diagram；
In the figure, it is marked as axially work hold-down mechanism, 2- Pressure Block, 3- spherical pressure bearing pad, the safe stud of 4-, 5- are pre-tightened 1-
Nut, 6- sealing element, 7- guiding feather key, 8- pressure head sensor, 9- displacement sensor, 10- dynamometry servo hydraulic cylinder, 11- positioning
Block, 12- positioning pin.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing.
As shown in Figures 1 to 6, operation roll of mill axial direction detection device, including axial pressing device, electro-hydraulic dynamometric system,
Location prediction system；
Axial pressing device is mounted on milling train fore side convex block, axial pressing device include axial work hold-down mechanism 1,
Pressure Block 2, spherical pressure bearing pad 3, the safe stud 4 of axial limiter, pre-load nut 5, sealing element 6, guiding feather key 7, a working roll
Two sides be separately installed with an axial pressing device.
Electro-hydraulic dynamometric system include dynamometry servo hydraulic cylinder 10, pressure head sensor 8, electromagnetism overflow relief valve, energy storage equipment,
Hydraulic lock, solenoid valve, electro-hydraulic servo control, electric control circuit, electro-hydraulic dynamometric system are mounted on axial pressing device, pressure head sensing
Device 8 is arranged on Pressure Block 2 and convex block sideskid.10 quantity of dynamometry servo hydraulic cylinder is 4 sets, and electro-hydraulic dynamometric system is a pressure
Power closed-loop control system.When working roll occurs to transmission side axial float, using 4 be seal-installed on convex block sideskid
Pressure head sensor 8 carries out the measurement of axial force, and work roll axial force passes to rack by convex block, and displacement is prevented can not in rack
Change；When working roll occurs to fore side axial float, when working roll occurs to fore side axial float, using being installed on
4 strain resistor sensors on 4 servo hydraulic cylinders 10 and Pressure Block 2 that convex block axially works on hold-down mechanism 1 carry out axis
To the synchro measure of power.Axial force greatest limit rupture pull force limits load by 8 safe studs 4, prevents overload axial force damage
Bad working roll and bearing；Spherical pressure bearing pad 3 is mainly used for axial direction aligning effect when working roll or more and axial force unbalance loading, keeps peace
Full stud 4 and dynamometry servoBcylinder bear axial pulling force and pressure, prevent safe stud 4 and dynamometry servoBcylinder from bearing moment of flexure damage
It is bad；Pre-load nut 5 keeps the pretightning force to Pressure Block 2, prevents from loosening and working roll axial pressing device Impact direction is caused to occur
Anomalous variation damage；Guiding 7 major function of feather key be to maintain working roll axial pressing device change jobs roller when precisely move horizontally,
Limit up and down is carried out to hold-down mechanism simultaneously, keeps hold-down mechanism and 2 position precision of Pressure Block；
When working roll unloaded operation, electro-hydraulic dynamometric system gives 0.1% roll-force and eliminates the detection device working clearance, puts down
Weighing apparatus effect；When working roll is gradually increased to fore side axial force, detected by hydraulic system pressure sensor, by electro-hydraulic servo
Valve, which is set up, to be kept, and is servo-actuated and is improved working roll axial pressing force, keeps work by hydraulic system dynamometry servoBcylinder when stable rolling, when
When axial force detection is more than 3% roll-force, pressure alarm is carried out, maintenance down inspection when necessary is taken at corresponding measure
Reason；When pressure sensor detection axial force transfinites 5% roll-force, is opened by electromagnetism overflow relief valve and carry out safety overflow, together
When alarm in human-computer exchange picture, to take corresponding measure in time；It is automatically controlled to pass through bypass circulation when replacing working roll
It works, dynamometry servo hydraulic cylinder 10 is retracted, roll change is separately switched by the horizontal drive that locking cylinder carries out pressing device；
Separately on the Pressure Block 2 of axial compression mechanism be provided with pressure head sensor 8, and by spherical pressure bearing pad 3 be coupled seal into
It exercises and uses, when working roll is to fore side play, also carry out the monitoring of axial force, two prisons by strain resistor sensor simultaneously
Measured value mutual backup sets the same alarm of clipping, prevents hydraulic and detection of electrons from unilaterally damaging and generates false alarm.
Location prediction system include 4 sets of dynamometry servo hydraulic cylinders 10, displacement sensor 9, hydraulic lock, electro-hydraulic servo control,
Electric control circuit, location prediction system are mounted on axial pressing device, and every working roll roller assembles axially mounted 4 sets of displacements and passes
Sensor 9, respectively to working roll bearing block two sides and upper and lower 4 points of progress displacement detecting.Location prediction system mainly passes through 4 sets of surveys
The displacement sensor 9 of position works in force servo hydraulic cylinder 10, in order to keep milling train normally to roll Shi Bufa in working roll
Raw axial float, when minor change occurs for axial position, displacement sensor 9 detects signal transmitting correction, according to being calculated
The deviation of target position and physical location, by D A be converted to analog quantity, analog output template output voltage signal,
Current signal driving servo valve is converted to via servo valve power amplification plate, the spool position by adjusting servo valve controls hydraulic
Cylinder 10 acts, and reaches or when close to target position, servo valve is given to be reduced, into after positioning accuracy, given value subtract it is reserved between
Gap becomes zero value, this value is to guarantee that servo valve power output and displacement are controlled, and hydraulic cylinder 10 is out of service, and APC positioning is completed.It is logical
It crosses displacement and keeps function, every working roll roller assembles axially mounted 4 sets of position monitoring elements, respectively to working roll bearing block two
Side and upper and lower 4 points of progress displacement detecting, form perfect location prediction system.
Further, it is provided with 2 positioning pins 12 in dynamometry servo hydraulic cylinder 10, prevents 10 piston rod of hydraulic cylinder and cylinder body
Rotate damage sealing and automatically controlled circuit
Further, dynamometry servo hydraulic cylinder 10, pressure head sensor 8, electromagnetism overflow relief valve, energy storage equipment, hydraulic lock,
Solenoid valve, electro-hydraulic servo control, electric control circuit constitute a pressure closed-loop control system.
Claims (3)
1. operation roll of mill axial compression detection device, it is characterised in that: including axial pressing device, electro-hydraulic dynamometric system, position
Set forecast system；
Axial pressing device is mounted on milling train fore side convex block, and axial pressing device includes axial work hold-down mechanism, pressure-bearing
Seat, spherical pressure bearing pad, the safe stud of axial limiter, pre-load nut, sealing element, guiding feather key, the two sides difference of a working roll
One axial pressing device is installed；
Electro-hydraulic dynamometric system include dynamometry servo hydraulic cylinder, pressure head sensor, electromagnetism overflow relief valve, energy storage equipment, hydraulic lock,
Solenoid valve, electro-hydraulic servo control, electric control circuit, electro-hydraulic dynamometric system are mounted on axial pressing device, the setting of pressure head sensor
On Pressure Block and convex block sideskid；
Location prediction system includes 4 sets of dynamometry servo hydraulic cylinders, displacement sensor, hydraulic lock, electro-hydraulic servo control, automatically controlled time
Road, location prediction system are mounted on axial pressing device, and every working roll roller assembles axially mounted 4 sets of displacement sensors,
Respectively to working roll bearing block two sides and upper and lower 4 points of progress displacement detecting.
2. operation roll of mill axial compression detection device according to claim 1, it is characterised in that: dynamometry servo hydraulic cylinder
Inside it is provided with 2 positioning pins.
3. operation roll of mill axial compression detection device according to claim 1, it is characterised in that: dynamometry servo-hydraulic
It is cylinder, strain resistor pressure head sensor, electromagnetism overflow relief valve, energy storage equipment, hydraulic lock, solenoid valve, electro-hydraulic servo control, automatically controlled
Circuit constitutes a pressure closed-loop control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822002884.0U CN209206050U (en) | 2018-11-30 | 2018-11-30 | Operation roll of mill axial compression detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822002884.0U CN209206050U (en) | 2018-11-30 | 2018-11-30 | Operation roll of mill axial compression detection device |
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| Publication Number | Publication Date |
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| CN209206050U true CN209206050U (en) | 2019-08-06 |
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| CN201822002884.0U Active CN209206050U (en) | 2018-11-30 | 2018-11-30 | Operation roll of mill axial compression detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893486A (en) * | 2021-01-21 | 2021-06-04 | 包头钢铁（集团）有限责任公司 | Real-time online monitoring device and monitoring method for axial force of wide and thick plate working roll |
| CN115990618A (en) * | 2023-03-23 | 2023-04-21 | 太原理工大学 | Rolling mill roll gap compensation device and method |
-
2018
- 2018-11-30 CN CN201822002884.0U patent/CN209206050U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112893486A (en) * | 2021-01-21 | 2021-06-04 | 包头钢铁（集团）有限责任公司 | Real-time online monitoring device and monitoring method for axial force of wide and thick plate working roll |
| CN115990618A (en) * | 2023-03-23 | 2023-04-21 | 太原理工大学 | Rolling mill roll gap compensation device and method |
| CN115990618B (en) * | 2023-03-23 | 2023-05-16 | 太原理工大学 | Rolling mill roll gap compensation device and method |
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