CN202963040U - Middle roll shaft displacement measurement device of rolling mill - Google Patents
Middle roll shaft displacement measurement device of rolling mill Download PDFInfo
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- CN202963040U CN202963040U CN 201220702421 CN201220702421U CN202963040U CN 202963040 U CN202963040 U CN 202963040U CN 201220702421 CN201220702421 CN 201220702421 CN 201220702421 U CN201220702421 U CN 201220702421U CN 202963040 U CN202963040 U CN 202963040U
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- roll shaft
- hydraulic cylinder
- middle roll
- displacement
- displacement sensor
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Abstract
The utility model discloses a middle roll shaft displacement measurement device of a rolling mill. The device comprises a magnetostrictive displacement sensor and a controller. The magnetostrictive displacement sensor is arranged to be connected with a middle roll shaft displacement hydraulic cylinder to measure stroke of the middle roll shaft displacement hydraulic cylinder and output displacement signals. The controller is arranged to be capable of calculating displacement quantity of the middle roll shaft displacement hydraulic cylinder according to received displacement signals. The middle roll shaft displacement measurement device adopts the non-contact mode to measure middle roll shaft displacement quantity of the rolling mill, is high in measurement result accuracy, good in linearity and strong in environment interference resistance and improves protection grade. The device is low in fault rate and easy to install and maintain, facilitates production control and saves device running and maintaining cost.
Description
Technical field
The utility model relates to iron and steel and makes the field, particularly, relates to the axial linear displacement measurement device of a kind of rolling-mill middle roller.
Background technology
Make the field at iron and steel, steel rolling is the pressure processing process of steel ingot, steel billet shape that changes at the roll shop building of rotation.The type of steel rolling can be divided into hot rolling and cold rolling by the rolling temperature difference; The relative motion relation of rolled piece and roll is different when rolling is divided into axial rolling, transverse rolling and oblique milling; Shaping characteristic by rolled products also can be divided into general rolling and special rolled.
Have on the strip-mill strip of intermediate calender rolls, regulating the intermediate calender rolls position, coordinating the roller function can change mill stiffness.Roll surface by regulating the up and down intermediate calender rolls reaches adjustment roller radian with the contact area of the roll surface of working roll, indirectly changes the original convexity of roll.Middle roll shaft shifting function is to adapt to the wide variation of milled sheet, thereby strengthens the roller effect, realizes the larger lateral stiffness of milling train, has stronger plate shape control ability.Intermediate calender rolls traversing (or displacement) is measured and control accuracy has important function to the high-precision shape control of realizing cold-strip steel.
The technical scheme that provides the displacement of the upper and lower intermediate calender rolls of a kind of rolling-mill housing to measure in prior art.In this scheme, adopt the displacement measurement mode based on rack-and-pinion, namely tooth bar is arranged on axle and moves the hydraulic cylinder place, with stretching out/the retraction moving linearly of hydraulic cylinder; Wheel and rack coordinates, and does gyration when tooth bar stretches out/retracts.With absolute value encoder of the coaxial installation of gear shaft, encoder is converted to pulse to the rotation of gear, and pulse count is carried out computing and drawn the physical location amount that middle roll shaft moves.Yet, because the engagement of rack-and-pinion inevitably the back lash can occur, and there is the hysterisis error that can not determine, therefore this metering system is difficult to realize the measurement to the middle roll shaft amount of moving degree of precision, is difficult to satisfy need of production.
Above-mentioned technical problem for existing in prior art there is no good solution at present.
The utility model content
The purpose of this utility model is to provide a kind of rolling-mill middle roller axle shift measurement device, can't carry out the technical problem that degree of precision is measured to the middle roll shaft amount of moving to overcome in prior art.
To achieve these goals, the utility model provides a kind of rolling-mill middle roller axle shift measurement device, this device can comprise: magnetostrictive displacement sensor, and be configured to move hydraulic cylinder with middle roll shaft and be connected to measure the stroke that described middle roll shaft moves hydraulic cylinder, and the output displacement signal; And controller, be configured to and can calculate the displacement that described middle roll shaft moves hydraulic cylinder according to the described displacement signal that receives.
Further, described magnetostrictive displacement sensor can comprise: measuring stick, be enclosed within noncontact magnet ring on this measuring stick and the measuring circuit of this measuring stick end.
Further, described magnetostrictive displacement sensor with described in the middle of roll shaft move hydraulic cylinder be connected can for: described measuring stick is fixedly connected on the cylinder body of described hydraulic cylinder, and described noncontact magnet ring is fixedly connected on the piston rod of described hydraulic cylinder.
Further, described being fixedly connected as by carriage is fixedly connected with.
Further, described controller can be industrial control computer and/or logic programmable controller.
Further, described magnetostrictive displacement sensor can be rod-type micropulse displacement transducer or magnetostrictive displacement sensor.
By technique scheme, use magnetostrictive displacement sensor, utilize magnetostrictive effect, having realized middle roll shaft is moved adopts cordless to measure, guaranteed from principle the accuracy of measuring, and measurement result is not subjected to the impact of environment, the degree of protection of raising device; Failure rate is low, the operating cost of having saved equipment is convenient to production control, provides powerful guarantee for improving the steel rolling product quality.
Other feature and advantage of the present utility model will partly be described in detail in the specific embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification, is used from explanation the utility model with the following specific embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to rolling-mill middle roller axle shift measurement device schematic diagram of the present utility model;
Fig. 2 is the schematic diagram according to magnetostrictive displacement sensor of giving an example of the present utility model; And
Fig. 3 is the magnetostrictive displacement sensor scheme of installation of giving an example according to of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is elaborated.Should be understood that, the specific embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
By above description, can find out that the phenomenon of obliterated data frequently occurs the metering system of prior art middle gear tooth bar, have a strong impact on the certainty of measurement of middle roll shaft pan position, and then have a strong impact on the product quality of steel rolling product.And the reason that produces these problems is by the own characteristic of rack-and-pinion and common decision of objective environment of its use, mainly contain following reason: the back lash between rack-and-pinion is larger, axle moves hydraulic cylinder and does a reciprocating motion, its back lash amount is all not identical, directly causes the counting error increasing of encoder and continues to be in overlaying state; Being connected between gear and encoder is loosening, causes encoder power transmission shaft catcher to skid, and causes miscount and loss of data; The rack and pinion engagement contact-making surface is subjected to foreign matter to interfere the generation jam, causes gear or tooth bar generation broken teeth situation, affects counting precision; Encoder itself damages and cable failure, be subjected to the impact of the adverse circumstances such as steam, greasy dirt of frame emulsion, the encoder internal component makes moist and causes encoder damage, encoder joint and cable to be subjected to corrosion to cause breakage, come off, and in the middle of causing, the roll shaft moving device damages and afunction; And gear is arranged in bearing block, and the bearing clearance in bearing block is excessive or jam occurs, and directly affects the counting precision of encoder, etc.
By statistics, at rack-and-pinion and encoder all in normal situation, middle roll shaft moves does a reciprocating motion, in encoder measure error ± 20mm, certainty of measurement is extremely low, cause frame exit plate shape bad, band steel broken belt even occurs in the operation of rolling, seriously restrict the normal production of unit and affect product quality.
For problems of the prior art, the inventor has proposed a kind of rolling-mill middle roller axle shift measurement device with innovating.Fig. 1 is the schematic diagram according to rolling-mill middle roller axle shift measurement device 100 of the present utility model.As shown in Figure 1, a kind of rolling-mill middle roller axle shift measurement device 100 that the utility model provides, comprise: magnetostrictive displacement sensor 101, be configured to move hydraulic cylinder with middle roll shaft and be connected to measure the stroke that described middle roll shaft moves hydraulic cylinder, and the output displacement signal; And controller 102, be configured to and can calculate the displacement that described middle roll shaft moves hydraulic cylinder according to the described displacement signal that receives.
the operation principle of magnetostrictive displacement sensor 101 is: during work, by magnetostrictive displacement sensor (for example, rod-type micropulse displacement transducer) in the electronics storehouse, electronic circuit produces an initial pulse, this initial pulse transmits in waveguide filament, produced simultaneously one along waveguide filament side progressive rotating excitation field, when the permanent-magnetic field in this magnetic field and magnet ring or ball float meets, produce magnetostrictive effect, waveguide filament is twisted, this twisting be installed in the electronics storehouse pick up can mechanism's institute's perception and convert corresponding current impulse to, it is the displacement signal in the utility model, then, calculate two time differences between pulse by controller 102 or other electronic circuits, can accurately measure tested displacement.
The output signal of magnetostrictive displacement sensor 101 is a real absolute position output, rather than signal ratio or that need to amplify again processing, so there is not the situation of signal drift or variate, therefore needn't look like other displacement transducer (for example, rack-and-pinion displacement transducer) equally needs regularly heavily mark and safeguard; Exactly because its output signal is absolute value, so can not receive the formation problem to data even power interruptions recloses also, more need not again return to zero-bit.Therefore, compare magneto strictive sensor with other displacement transducer and have obvious advantage.Simultaneously, as displacement transducer, magneto strictive sensor not only can be measured the straight-line displacement of moving object, but also can provide simultaneously the velocity simulate signal of moving object.Therefore, the displacement data that magnetostrictive displacement sensor 101 not only can provide the rolling-mill middle roller axle to move to controller 102 can also provide speed data simultaneously.Namely, according to comprising displacement data and speed data in displacement information of the present utility model.Thereby can control displacement and speed that the rolling-mill middle roller axle moves simultaneously by controller.
As seen from the above analysis, use magnetostrictive displacement sensor 101 has been realized the non-cpntact measurement to displacement, therefore eliminate or weakened the impact of measurement environment on measurement result, the certainty of measurement of adding himself is higher, therefore have the characteristics such as precision is high, good reproducibility, reliable and stable, the life-span long, easy for installation, environmental suitability is strong according to rolling-mill middle roller axle shift measurement device of the present utility model, and improved the degree of protection of device; Failure rate is low, the operating cost of having saved equipment is convenient to production control, provides powerful guarantee for improving the steel rolling product quality.
Fig. 2 is the schematic diagram according to magnetostrictive displacement sensor of giving an example of the present utility model.Below in conjunction with Fig. 3, the mounting means according to magnetostrictive displacement sensor of the present utility model is described.Fig. 3 is the magnetostrictive displacement sensor scheme of installation of giving an example according to of the present utility model, as shown in Figure 3, according to magnetostrictive displacement sensor of the present utility model, Baruch husband rod-type micropulse displacement transducer for example, can comprise: measuring stick 1012(can comprise expression specified measurement measurement of length zone and decay area) and be enclosed within noncontact magnet ring 1011 on this measuring stick, and the gage outfit (corresponding to the decay area) in this sensor of some type and be positioned at measuring circuit or the electronics storehouse (not shown) of measuring stick end.Wherein, magnetostrictive displacement sensor and middle roll shaft move hydraulic cylinder and be connected to: described measuring stick is fixedly connected on the cylinder body 302 of described hydraulic cylinder, the piston rod 303(that described noncontact magnet ring is fixedly connected on (for example, being fixedly connected on by carriage) described hydraulic cylinder as shown in Figure 3); Perhaps described noncontact magnet ring is fixedly connected on the cylinder body 302 of described hydraulic cylinder, and described measuring stick is fixedly connected on the piston 303 of described hydraulic cylinder.Described here being fixedly connected with can be commonly used various for fixing connected mode (for example, bolt is fixed, interference fit etc.) in this area.As an example, adopt non-magnet material spacer ring 301 to be fixed and to play and the effect of isolating and adjusting herein.The Baruch husband rod-type micropulse displacement sensor scope of selecting is 25-5500mm, output signal is the 0-10V analog signals of standard, corresponding absolute displacement value can be connected configuration fast with industrial control computer and/or with the logic programmable controller (PLC) of analog input module.
Below describe by reference to the accompanying drawings preferred embodiment of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characterictic described in the above-mentioned specific embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model illustrates no longer separately to various possible combinations, and as long as its without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (6)
1. rolling-mill middle roller axle shift measurement device, this device comprises:
Magnetostrictive displacement sensor is configured to move hydraulic cylinder with middle roll shaft and is connected to measure the stroke that described middle roll shaft moves hydraulic cylinder, and the output displacement signal; And controller, be configured to calculate according to the described displacement signal that receives the displacement that described middle roll shaft moves hydraulic cylinder.
2. device according to claim 1, is characterized in that, described magnetostrictive displacement sensor comprises:
Measuring stick, be enclosed within noncontact magnet ring on this measuring stick and the measuring circuit of this measuring stick end.
3. device according to claim 2, is characterized in that, described magnetostrictive displacement sensor and described middle roll shaft move hydraulic cylinder and be connected to:
Described measuring stick is fixedly connected on the cylinder body of described hydraulic cylinder, and described noncontact magnet ring is fixedly connected on the piston rod of described hydraulic cylinder.
4. device according to claim 3, is characterized in that, described being fixedly connected as by carriage is fixedly connected with.
5. device according to claim 1, is characterized in that, described controller is industrial control computer and/or logic programmable controller.
6. the described device of arbitrary claim according to claim 1-5, is characterized in that, described magnetostrictive displacement sensor is rod-type micropulse displacement transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702421 CN202963040U (en) | 2012-12-18 | 2012-12-18 | Middle roll shaft displacement measurement device of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220702421 CN202963040U (en) | 2012-12-18 | 2012-12-18 | Middle roll shaft displacement measurement device of rolling mill |
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| Publication Number | Publication Date |
|---|---|
| CN202963040U true CN202963040U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220702421 Expired - Fee Related CN202963040U (en) | 2012-12-18 | 2012-12-18 | Middle roll shaft displacement measurement device of rolling mill |
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| CN (1) | CN202963040U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708357A (en) * | 2014-01-03 | 2014-04-09 | 资阳市福兴自动化机械有限公司 | Setting machine of electro-hydraulic servo hydraulic cylinder |
| WO2016058234A1 (en) * | 2014-10-14 | 2016-04-21 | 江苏甬金金属科技有限公司 | Twenty-roller intermediate roller pushing device |
| CN107199245A (en) * | 2017-06-30 | 2017-09-26 | 天津市中重科技工程有限公司 | CMA universal mills horizontal roller high accuracy axial adjusting device |
| CN107941186A (en) * | 2017-12-13 | 2018-04-20 | 山信软件股份有限公司 | A kind of displacement sensing system |
-
2012
- 2012-12-18 CN CN 201220702421 patent/CN202963040U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103708357A (en) * | 2014-01-03 | 2014-04-09 | 资阳市福兴自动化机械有限公司 | Setting machine of electro-hydraulic servo hydraulic cylinder |
| WO2016058234A1 (en) * | 2014-10-14 | 2016-04-21 | 江苏甬金金属科技有限公司 | Twenty-roller intermediate roller pushing device |
| CN107199245A (en) * | 2017-06-30 | 2017-09-26 | 天津市中重科技工程有限公司 | CMA universal mills horizontal roller high accuracy axial adjusting device |
| CN107941186A (en) * | 2017-12-13 | 2018-04-20 | 山信软件股份有限公司 | A kind of displacement sensing system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20211218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |