JPH1190513A - Rolling equipment with hydraulic pad - Google Patents
Rolling equipment with hydraulic padInfo
- Publication number
- JPH1190513A JPH1190513A JP26033997A JP26033997A JPH1190513A JP H1190513 A JPH1190513 A JP H1190513A JP 26033997 A JP26033997 A JP 26033997A JP 26033997 A JP26033997 A JP 26033997A JP H1190513 A JPH1190513 A JP H1190513A
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- pad
- rolling
- axle box
- housing
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 59
- 230000001133 acceleration Effects 0.000 claims description 17
- 238000003825 pressing Methods 0.000 description 14
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- B21B31/02—Rolling stand frames or housings; Roll mountings ; Roll chocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
- B21B2203/44—Vibration dampers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/007—Control for preventing or reducing vibration, chatter or chatter marks
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
(57)【要約】
【課題】 軸箱の熱膨張と振動を吸収できるようにした
油圧パッドを有する圧延装置を提供する。
【解決手段】 ハウジング１の開口１ａに取付けられた
軸箱２〜５と、この軸箱２〜５の側面と開口１ａの垂直
面との間に設けらた油圧パッド８とを備え、油圧パッド
８は軸箱側面に平行な２枚のパッドを有しこのパッド間
に圧油を供給することによりパッドが湾曲して軸箱２〜
５をハウジング１に押圧するようになっている油圧パッ
ド付圧延装置において、油圧パッド８に供給する油圧を
圧延装置の動作状態を表す圧延操業信号に応じて変化さ
せる油圧制御装置１２を備える。
(57) [Problem] To provide a rolling device having a hydraulic pad capable of absorbing thermal expansion and vibration of an axle box. SOLUTION: A hydraulic box includes: axle boxes 2 to 5 attached to an opening 1a of a housing 1; and a hydraulic pad 8 provided between side surfaces of the axle boxes 2 to 5 and a vertical surface of the opening 1a. 8 has two pads parallel to the side of the axle box, and by supplying pressurized oil between these pads, the pads are curved and
A rolling device with a hydraulic pad adapted to press the housing 5 against the housing 1 is provided with a hydraulic control device 12 for changing a hydraulic pressure supplied to the hydraulic pad 8 according to a rolling operation signal indicating an operation state of the rolling device.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、圧延装置のハウジ
ングに取付けられた軸箱とハウジングとの間に設けられ
た油圧パッドの油圧を、圧延装置の作動状態に応じて変
化させるようにした圧延設備に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling mill in which the hydraulic pressure of a hydraulic pad provided between a housing and an axle box mounted on a housing of a rolling mill is changed in accordance with the operation state of the rolling mill. Equipment related.
【０００２】[0002]
【従来の技術】圧延装置のハウジングの開口（この開口
はウインドウと呼ばれる）にはワークロールやバックア
ップロールの軸箱が設けられている。製作時、修理時に
はこの軸箱をロールと一体にして取外し、取付けが行わ
れるため、各軸箱とハウジングとの間にある程度大きな
間隙を設け、この間隙に着脱可能なライナーを設けてい
る。軸箱はロールの回転により発熱するためこの間隙を
ライナーですきまなくうめてしまうと、軸箱には大きな
熱応力が発生する。そこで軸箱を冷却することにより熱
膨張を押さえる方法が用いられており、その一例が実公
昭５２−５２９１６号公報に開示されている。また、こ
の間隙に２枚のパッドを設け、このパッド間に油圧をか
けるとパッドが円弧状に撓み、間隙をなくすことにより
振動の発生を防止し、軸箱の熱膨張に対しては一定圧で
軸箱を押圧しつつパッドの撓みが減少して熱膨張を吸収
する。このように軸箱の熱膨張を吸収するとともに振動
も吸収する油圧パッドが用いられている。これは例えば
ＡＳＫＯ ＨｙｄｒａＬｉｎｅｒの商品名で市販されて
いる。2. Description of the Related Art An axle box of a work roll or a backup roll is provided in an opening (a window is called a window) of a housing of a rolling mill. At the time of manufacture and repair, the axle box is detached integrally with the roll and removed and attached. Therefore, a relatively large gap is provided between each axle box and the housing, and a detachable liner is provided in the gap. Since the axle box generates heat due to the rotation of the roll, if this gap is completely filled with the liner, a large thermal stress is generated in the axle box. Therefore, a method of suppressing thermal expansion by cooling the axle box has been used, and one example thereof is disclosed in Japanese Utility Model Publication No. 52-52916. Also, two pads are provided in the gap, and when hydraulic pressure is applied between the pads, the pads bend in an arc shape, eliminating the gap to prevent the occurrence of vibration, and maintaining a constant pressure against thermal expansion of the axle box. While pressing the axle box, the bending of the pad is reduced and the thermal expansion is absorbed. Thus, a hydraulic pad that absorbs thermal expansion of the axle box and also absorbs vibration is used. It is commercially available, for example, under the trade name ASKO HydraLiner.
【０００３】[0003]
【発明が解決しようとする課題】実公昭５２−５２９１
６号公報に開示された軸箱を冷却する方法は設備が複雑
になり、製作コストが高く、メインテナンスの費用がか
さむ。また軸箱とハウジングとの間にはある程度の間隙
が存在するため軸箱の振動が発生する。上記油圧パッド
による方法は、圧延装置が厳しい作動条件で作動してい
る場合も振動が発生しないような圧力に設定されてい
る。被圧延材をワークロールで押圧するため各軸箱は垂
直方向に圧下されているが、各軸箱に油圧パッドにより
水平方向に加わる押圧力によって垂直方向に摩擦力が発
生する。このため、圧下動作に不安定要素が入る。この
不安定要素は摩擦力が大きい程大きく、油圧パッドの油
圧は厳しい作動条件に基づき大きな値に設定されている
ため、不安定要素大きい。また油圧パッドへのこのよう
な大きな油圧は油圧パッドの傷みを促進する。Problems to be Solved by the Invention
The method of cooling an axle box disclosed in Japanese Patent Publication No. 6-69, requires complicated equipment, high manufacturing cost, and high maintenance cost. Also, since there is a certain gap between the housing and the housing, vibration of the housing is generated. In the method using the hydraulic pad, the pressure is set so that vibration does not occur even when the rolling mill is operating under severe operating conditions. Each axle box is pressed down in the vertical direction in order to press the material to be rolled with the work roll, but a frictional force is generated in the vertical direction by a pressing force applied to each axle box by a hydraulic pad in a horizontal direction. For this reason, an unstable element enters the rolling operation. This unstable element is larger as the frictional force is larger, and the hydraulic pressure of the hydraulic pad is set to a large value based on severe operating conditions, and therefore, the unstable element is larger. Also, such high hydraulic pressure on the hydraulic pad promotes damage to the hydraulic pad.
【０００４】本発明はかかる問題点を解決するために創
案されたものである。すなわち、本発明の目的は、軸箱
の熱膨張と振動を吸収できるようにした油圧パッドを有
する圧延装置を提供することにある。The present invention has been made to solve such a problem. That is, an object of the present invention is to provide a rolling device having a hydraulic pad capable of absorbing thermal expansion and vibration of an axle box.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明では、ハウジングの開口に取付けら
れた軸箱と、この軸箱の側面と前記開口の垂直面との間
に設けらた油圧パッドとを備え、前記油圧パッドは軸箱
側面に平行な２枚のパッドを有しこのパッド間に圧油を
供給することによりいずれか一方のまたは両方のパッド
が湾曲して軸箱をハウジングに押圧するようになってい
る油圧パッド付圧延装置において、前記油圧パッドに供
給する油圧を圧延装置の動作状態を表す圧延操業信号に
応じて変化させる油圧制御装置を備える。In order to achieve the above object, according to the first aspect of the present invention, an axle box attached to an opening of a housing is provided between a side surface of the axle box and a vertical surface of the opening. The hydraulic pad has two pads parallel to the side of the axle box, and by supplying pressure oil between the pads, one or both of the pads are curved to form an axle box. The rolling device with a hydraulic pad that presses the pressure on the housing is provided with a hydraulic control device that changes a hydraulic pressure supplied to the hydraulic pad in accordance with a rolling operation signal indicating an operation state of the rolling device.
【０００６】ハウジングや軸箱には圧延装置の動作状況
に応じて、例えば加わる加速度などは変化しており、加
速度が大きいときは振動が発生し易いので、油圧パッド
の油圧を高くし軸箱をハウジングへ押し付ける押付力を
大きくするが、加速度が小さい場合は押付力を小さくす
る。このように油圧パッドに供給する油圧を圧延装置の
動作状態を表す圧延操業信号に応じて変化させることに
より、従来のように最大の加速度が発生しても振動を防
止するため、常時油圧を高く設定する必要はないので、
油圧パッドの押付力によって発生する摩擦力が軸箱圧下
動作に与える不安定要素を少くすることができ、さらに
油圧パッドの損傷の発生を少くすることができる。この
ように圧延装置の動作状況に応じて油圧パッドの油圧を
設定することにより、軸箱の振動を防止することができ
る。またこの油圧は圧延装置の動作状況が変化しない限
り設定値に保たれるので、軸箱が熱膨張した場合、この
設定値を保持しつつパッドの撓みが減少して熱膨張を吸
収する。For example, the acceleration applied to the housing or the axle box changes according to the operating condition of the rolling mill. When the acceleration is large, vibration is apt to occur. The pressing force for pressing the housing is increased, but when the acceleration is small, the pressing force is reduced. By changing the hydraulic pressure supplied to the hydraulic pad in accordance with the rolling operation signal indicating the operation state of the rolling mill in this manner, even if the maximum acceleration occurs, vibration is prevented as in the conventional case. No need to set,
It is possible to reduce an unstable element that the frictional force generated by the pressing force of the hydraulic pad exerts on the lowering operation of the axle box, and further reduce the occurrence of damage to the hydraulic pad. By setting the hydraulic pressure of the hydraulic pad according to the operation state of the rolling device in this way, vibration of the axle box can be prevented. Further, since the hydraulic pressure is maintained at a set value unless the operation state of the rolling device changes, when the axle box thermally expands, the bending of the pad is reduced while maintaining the set value to absorb the thermal expansion.
【０００７】請求項２の発明では、前記圧延操業信号
は、ハウジングに生ずる加速度、被圧延材の圧延速度、
被圧延材に加わる圧下力、被圧延材を圧延するワークロ
ールを回転するモータ出力の少くても１つを含む信号で
ある。According to the second aspect of the present invention, the rolling operation signal includes an acceleration generated in the housing, a rolling speed of the material to be rolled,
This signal includes at least one of the rolling force applied to the material to be rolled and the output of the motor that rotates the work roll for rolling the material to be rolled.
【０００８】これらの加速度、圧延速度、圧下力、ワー
クロール回転するモータ出力はいづれも軸箱に振動を発
生させる要因であるので、これらの１つまたは複数の値
により、これらが大きいときは油圧パッドの圧力を大き
くし、小さいときは圧力を小さくする。Any of these acceleration, rolling speed, rolling force, and motor output for rotating the work roll is a factor that causes vibration in the axle box. Increase the pad pressure; decrease the pressure when it is low.
【０００９】[0009]
【発明の実施の形態】以下、本発明の好ましい実施形態
を図面を参照して説明する。図１は、本発明の実施形態
の圧延装置ハウジングとこれに装着された軸箱等を示す
図である。本図はロールの両側に設けられたハウジンク
１の一方を示すが、他方も同様である。ただし油圧設定
装置１２と圧油供給装置１３は共通である。ハウジング
１内の開口１ａには上部ワークロール軸箱２と下部ワー
クロール軸箱３が高さ方向ほぼ中心に設けられ、これを
挟んで上部バックアップロール軸箱４が上部ワークロー
ル軸箱２の上部に、下部バックアップロール軸箱５が下
部ワークロール軸箱３の下部に設けられている。下部バ
ックアップロール軸箱５とハウジング１の間には油圧シ
リンダよりなる圧下装置６が設けられ、上部バックアッ
プロール軸箱４とハウジング１との間にはロードセル７
が設けられ、図示しない上下ワークロール間に挟まれた
被圧延材に圧下力を与える。この圧下力はロードセル７
により計測される。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing a rolling mill housing according to an embodiment of the present invention and an axle box mounted on the housing. This figure shows one of the housings 1 provided on both sides of the roll, but the same applies to the other. However, the hydraulic pressure setting device 12 and the pressure oil supply device 13 are common. An upper work roll axle box 2 and a lower work roll axle box 3 are provided at the opening 1a in the housing 1 at substantially the center in the height direction. In addition, a lower backup roll axle box 5 is provided below the lower work roll axle box 3. A lowering device 6 composed of a hydraulic cylinder is provided between the lower backup roll axle box 5 and the housing 1, and a load cell 7 is provided between the upper backup roll axle box 4 and the housing 1.
Is provided to apply a rolling force to a material to be rolled sandwiched between upper and lower work rolls (not shown). This rolling force is the load cell 7
Is measured by
【００１０】矢印で示すように図で左から右に被圧延材
が搬入される。各軸箱２〜５の被圧延材出側の側面とハ
ウジング１の開口１ａの垂直面との間にそれぞれ油圧パ
ッド８が取付けられている。上部バックアップロール軸
箱４の高さで、被圧延材出側のハウジング１には、ハウ
ジング１に加わる加速度を計測する加速度計９が設けら
れている。各油圧パッド８には圧力制御弁１１を備えた
油圧配管１０の一端が接続され、他端は後述する圧油供
給装置１３に接続されている。圧力制御弁１１は圧油供
給装置から供給される圧油を油圧選定装置１２で指示さ
れた値に保持する。As shown by the arrows, the rolled material is carried in from left to right in the figure. Hydraulic pads 8 are respectively mounted between the side surfaces of the axle boxes 2 to 5 on the rolled material exit side and the vertical surface of the opening 1 a of the housing 1. An accelerometer 9 for measuring the acceleration applied to the housing 1 is provided on the housing 1 on the side of the material to be rolled at the height of the upper backup roll axle box 4. One end of a hydraulic pipe 10 having a pressure control valve 11 is connected to each hydraulic pad 8, and the other end is connected to a pressure oil supply device 13 described later. The pressure control valve 11 holds the pressure oil supplied from the pressure oil supply device at a value specified by the oil pressure selection device 12.
【００１１】加速度計９からの加速度信号、ロードセル
７からの圧下力信号、図示しない被圧延材の圧延速度を
計測する速度計からの速度信号、および図示しないワー
クロールを駆動するモータの出力を検出するモータ出力
信号を入力し、これらの信号から油圧パッド８に供給す
る油圧を演算し、その油圧となるよう圧力制御弁１１を
制御する油圧設定装置１２が設けられている。圧油供給
装置１３は油圧パッド８に必要となる最高圧より高い油
圧の圧油を供給する装置である。An acceleration signal from the accelerometer 9, a rolling force signal from the load cell 7, a speed signal from a speed meter (not shown) for measuring a rolling speed of the material to be rolled, and an output of a motor for driving a work roll (not shown) are detected. A hydraulic pressure setting device 12 is provided for inputting a motor output signal to be operated, calculating a hydraulic pressure to be supplied to the hydraulic pad 8 from these signals, and controlling the pressure control valve 11 to obtain the hydraulic pressure. The pressure oil supply device 13 is a device that supplies pressure oil having a pressure higher than the maximum pressure required for the hydraulic pad 8.
【００１２】図２は油圧パッドの構成を示す図である。
油圧パッド８は、第１パッド２０と第２パッド２１を有
し、第２パッド２１はハウジング１に取付けられた第２
パッド当板２３で支えられている。第１パッドを覆うよ
うに断面逆「コ」の字型の第１パッド受板２２が設けら
れ、パッド軸箱２〜５に取付けられた調整板２４で支え
られている。第２パッド２１と第１パッド受板２２を押
さえる頂部塞ぎ板２５が設けられている。第２パッド２
１，第２パッド受板２３，ハウジング１を貫通して油路
２６が設けられており、油圧管１０接続している。この
油路２６に圧油を供給すると第１パッド２０は、第１パ
ッド受板２２の逆コの字の凹みに円弧状に撓んで入る。
さらに圧油の圧力を大きくすると、第１パッド２０の中
央部が第１パッド受板２２に当たり、軸箱２〜５を押圧
する。FIG. 2 is a diagram showing the structure of the hydraulic pad.
The hydraulic pad 8 has a first pad 20 and a second pad 21, and the second pad 21 is a second pad attached to the housing 1.
It is supported by a pad abutment plate 23. A first pad receiving plate 22 having a U-shaped cross section is provided so as to cover the first pad, and is supported by an adjusting plate 24 attached to the pad axle boxes 2 to 5. A top blocking plate 25 for holding the second pad 21 and the first pad receiving plate 22 is provided. 2nd pad 2
An oil passage 26 is provided through the first pad receiving plate 23 and the housing 1, and is connected to the hydraulic pipe 10. When the pressure oil is supplied to the oil passage 26, the first pad 20 bends into an inverted U-shaped recess of the first pad receiving plate 22 in an arc shape.
When the pressure of the pressurized oil is further increased, the central portion of the first pad 20 hits the first pad receiving plate 22 and presses the shaft boxes 2 to 5.
【００１３】次に図１に示す油圧設定装置１２の動作に
ついて説明する。各油圧パッド８には、Ｐ1 ，Ｐ2 ，Ｐ
3 （Ｐ3 ＞Ｐ2 ＞Ｐ1 ）の３つの大きさの油圧が供給
されるものとする。各圧力は次の条件により決定され
る。Next, the operation of the hydraulic pressure setting device 12 shown in FIG. 1 will be described. Each hydraulic pad 8 has P 1 , P 2 , P
3 (P 3 > P 2 > P 1 ) are assumed to be supplied. Each pressure is determined by the following conditions.
【００１４】条件１；ａ＞ａ0 または（ｖ＞ｖ0 及びＰ
R ＞ＰR0及びｋｗ＞ｋｗ0 及びＢＩＳＲＡタイプのＡＧ
ＣはＯＦＦとする。） Ｐ＝Ｐ3 条件２；ａ＜ａ0 及び（ｖ＜ｖ0 またはＰR ＜ＰR0） Ｐ＝Ｐ1 条件３；それ以外 Ｐ＝Ｐ2 Condition 1: a> a 0 or (v> v 0 and P
R > P R0 and kw> kw 0 and BISRA type AG
C is OFF. ) P = P 3 Condition 2; a <a 0, and (v <v 0 or P R <P R0) P = P 1 condition 3; other P = P 2
【００１５】ここで各符号の意味は次の通りである。 ａ；加速度計９の測定値 ａ0 ；基準の加速度 ｖ；圧延速度（被圧延材の圧延速度） ｖ0 ；基準の圧延速度 ＰR ；圧下力でロードセル７の計測値 ＰR0；基準の圧下力 ｋｗ；ワークロール駆動モータ出力の計測値 ｋｗ0 ；ワークロール駆動モータ出力の基準値 ＢＩＳＲＡタイプのＡＧＣとは、圧下力によるミル弾性
変形を補償するもので、ロードセル７の出力を圧下装置
６にフィードバックする自動ゲインコントロールのこと
である。各基準の値は圧延装置が正常に動作するときの
標準値とする。Here, the meaning of each code is as follows. a; measured value of accelerometer 9 a 0 ; reference acceleration v; rolling speed (rolling speed of material to be rolled) v 0 ; reference rolling speed P R ; measured value of load cell 7 by rolling force P R0 ; reference reduction Force kw; Measured value of work roll drive motor output kw 0 ; Reference value of work roll drive motor output BISRA type AGC compensates for mill elastic deformation due to rolling force, and outputs the output of load cell 7 to rolling device 6 Automatic gain control that provides feedback. Each reference value is a standard value when the rolling mill operates normally.
【００１６】次に本実施形態の動作を説明する。本圧延
装置が被圧延材を圧延している状態では常に油圧設定装
置１２に、ロードセル７からの圧下力、加速度計９から
の加速度、図示しない速度計からは圧延速度、および図
示しない出力計からはワークロールを駆動するモータの
出力が入力されており、油圧設定装置１２では、上述の
条件に従って油圧の値を演算し、この値となるよう圧力
制御弁１１を制御する。加速度が大きい場合は振動を防
止するため油圧の値を大きくし、軸箱２〜５がハウジン
グ１に強く押し付けられるようにし、加速度が小さく、
かつ圧延速度または圧下力が基準値より小さいい場合
は、振動が発生する可能性が少くなるので押付力を小さ
くする。また加速度は小さいが、圧延速度または圧下力
が基準値より大きい場合は、押付力を普通の大きさとす
る。Next, the operation of this embodiment will be described. When the rolling device is rolling the material to be rolled, the hydraulic pressure setting device 12 always supplies the rolling force from the load cell 7, the acceleration from the accelerometer 9, the rolling speed from a speedometer (not shown), and the output speed (not shown). The output of the motor for driving the work roll is input, and the hydraulic pressure setting device 12 calculates the value of the hydraulic pressure in accordance with the above-described conditions, and controls the pressure control valve 11 so that the value is obtained. When the acceleration is large, the value of the oil pressure is increased to prevent vibration, the axle boxes 2 to 5 are strongly pressed against the housing 1, and the acceleration is small.
If the rolling speed or the rolling force is smaller than the reference value, the pressing force is reduced because the possibility of vibration is reduced. When the acceleration is small but the rolling speed or the rolling force is larger than the reference value, the pressing force is set to a normal value.
【００１７】このような制御により、軸箱２〜５をハウ
ジング１に強く押付けるのは加速度が大きい期間のみに
なるので、この押付により垂直方向に発生する摩擦力に
より、圧下装置６による圧下動作が不安定となる期間は
短い期間となる。また油圧パッド８に高い圧力がかかる
のも加速度が高い期間のみで他の期間には普通以下の圧
力となるので、油圧パッド８の寿命が長くなる。また、
軸箱２〜５に熱膨張が生じたときは、油圧パッド８は設
定された油圧が保持されるので、この油圧により油圧パ
ッド８に発生する力よりも大きな力が軸箱８の熱膨張に
より発生する場合、第１パッド２０の撓みが減少し熱膨
張を吸収する。つまり、通常熱膨張はこれを拘束した場
合、油圧パッド８に最大圧Ｐ3 を加えたときに発生する
押圧力より大きな力が発生するが、油圧パッド８にはＰ
3 より大きな油圧は供給されないので、第１パッド２０
の撓みが減少し軸箱２〜５が熱膨張する。この熱膨張に
より熱膨張を拘束した場合発生する力は急速に減少す
る。With such control, the axle boxes 2 to 5 are strongly pressed against the housing 1 only during a period of high acceleration, and the pressing operation by the pressing device 6 is performed by the frictional force generated in the vertical direction by the pressing. Is unstable for a short period of time. Also, a high pressure is applied to the hydraulic pad 8 only during a period in which the acceleration is high, and the pressure becomes lower than usual during the other periods, so that the life of the hydraulic pad 8 is prolonged. Also,
When thermal expansion occurs in the axle boxes 2 to 5, the hydraulic pad 8 retains the set hydraulic pressure. Therefore, a force greater than the force generated in the hydraulic pad 8 by the hydraulic pressure is generated by the thermal expansion of the axle box 8. When this occurs, the deflection of the first pad 20 is reduced and thermal expansion is absorbed. That is, when the thermal expansion is restrained, a force larger than the pressing force generated when the maximum pressure P 3 is applied to the hydraulic pad 8 is generated.
Since no hydraulic pressure greater than 3 is supplied, the first pad 20
And the shaft boxes 2 to 5 thermally expand. Due to this thermal expansion, the force generated when the thermal expansion is restrained rapidly decreases.
【００１８】[0018]
【発明の効果】上述したように、本発明の圧延装置は、
軸箱とハウジングとの間にスペースを設けてここに油圧
パッドを取付け圧延操業状態に応じてその油圧を変化す
るようにしたので、次の効果を奏する。 油圧パッドに供給する油圧の値を圧延装置の作業状
態に応じて変化させて振動を防止するので、軸箱を大き
な力でハウジングに押圧する期間は少く、これによる圧
下動作が不安定になる期間も少くなる。 油圧パッドに大きな油圧がかかるのは、加速度等の
大きくなる僅かな期間だけなので、この加圧により損傷
を受ける可能性が少くなり寿命が伸びる。 油圧パッドは軸箱の熱膨張に対しては、振動を防止
するに必要な押圧力で軸箱を押圧しつつ軸箱の膨張を受
け入れ、これを吸収する。 油圧パッドを取り外して軸箱を取り外し、取付けで
きるので、ロールの取付けおよび取り外し作業が容易に
なる。As described above, the rolling device of the present invention
Since a space is provided between the axle box and the housing, and a hydraulic pad is mounted on the space to change the oil pressure according to the rolling operation state, the following effects are obtained. Vibration is prevented by changing the value of the oil pressure supplied to the hydraulic pad according to the working state of the rolling mill, so the period during which the axle box is pressed against the housing with a large force is small, and the period during which the rolling operation becomes unstable. Less. Since a large oil pressure is applied to the hydraulic pad only for a short period of time when the acceleration or the like becomes large, the possibility of damage due to the pressurization is reduced and the life is extended. The hydraulic pad receives the expansion of the axle box while absorbing the thermal expansion of the axle box while pressing the axle box with a pressing force necessary to prevent vibration. Since the axle box can be removed and mounted by removing the hydraulic pad, the work of mounting and removing the roll is facilitated.
【図１】本発明の実施形態の構成図である。FIG. 1 is a configuration diagram of an embodiment of the present invention.
【図２】油圧パッドの構成図である。FIG. 2 is a configuration diagram of a hydraulic pad.
１ ハウジング １ａ 開口 ２ 上部ワークロール軸箱 ３ 下部ワークロール軸箱 ４ 上部バックアップロール軸箱 ５ 下部バックアップロール軸箱 ６ 圧下装置 ７ ロードセル ８ 油圧パッド ９ 加速度計 １０ 油圧配管 １１ 圧力制御弁 １２ 油圧設定装置 １３ 圧油供給装置 ２０ 第１パッド ２１ 第２パッド ２２ 第１パッド受板 ２３ 第２パッド当板 ２４ 調整板 ２５ 頂部塞ぎ板 ２６ 油路 DESCRIPTION OF SYMBOLS 1 Housing 1a Opening 2 Upper work roll shaft box 3 Lower work roll shaft box 4 Upper backup roll shaft box 5 Lower backup roll shaft box 6 Lowering device 7 Load cell 8 Hydraulic pad 9 Accelerometer 10 Hydraulic piping 11 Pressure control valve 12 Hydraulic setting device Reference Signs List 13 pressure oil supply device 20 first pad 21 second pad 22 first pad receiving plate 23 second pad abutment plate 24 adjusting plate 25 top blocking plate 26 oil passage
Claims (2)
と、この軸箱の側面と前記開口の垂直面との間に設けら
た油圧パッドとを備え、前記油圧パッドは軸箱側面に平
行な２枚のパッドを有しこのパッド間に圧油を供給する
ことによりパッドが湾曲して軸箱をハウジングに押圧す
るようになっている油圧パッド付圧延装置において、前
記油圧パッドに供給する油圧を圧延装置の動作状態を表
す圧延操業信号に応じて変化させる油圧制御装置を備え
たことを特徴とする油圧パッド付圧延装置。1. An axle box attached to an opening of a housing, and a hydraulic pad provided between a side surface of the axle box and a vertical surface of the opening, wherein the hydraulic pad is parallel to the side surface of the axle box. In a rolling device with a hydraulic pad, which has two pads and supplies pressure oil between the pads, the pad curves and presses the axle box against the housing. A rolling device with a hydraulic pad, comprising: a hydraulic control device that changes in accordance with a rolling operation signal indicating an operation state of the rolling device.
る加速度、被圧延材の圧延速度、被圧延材に加わる圧下
力、被圧延材を圧延するワークロールを回転するモータ
出力の少くても１つを含む信号であることを特徴とする
請求項１記載の油圧パッド付圧延装置。2. The rolling operation signal includes at least one of an acceleration generated in a housing, a rolling speed of a material to be rolled, a rolling force applied to the material to be rolled, and an output of a motor for rotating a work roll for rolling the material to be rolled. The rolling device with a hydraulic pad according to claim 1, wherein the signal includes:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26033997A JP3775622B2 (en) | 1997-09-25 | 1997-09-25 | Rolling machine with hydraulic pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26033997A JP3775622B2 (en) | 1997-09-25 | 1997-09-25 | Rolling machine with hydraulic pad |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1190513A true JPH1190513A (en) | 1999-04-06 |
| JP3775622B2 JP3775622B2 (en) | 2006-05-17 |
Family
ID=17346621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26033997A Expired - Fee Related JP3775622B2 (en) | 1997-09-25 | 1997-09-25 | Rolling machine with hydraulic pad |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3775622B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003019504A (en) * | 2001-07-06 | 2003-01-21 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling mill backlash killer |
| EP1120172A4 (en) * | 1999-08-11 | 2003-07-02 | Mitsubishi Heavy Ind Ltd | Rolling mill |
| WO2004058426A3 (en) * | 2002-12-20 | 2004-12-02 | Betr Forsch Inst Angew Forsch | Flat guiding module, particularly for a roll stand, and rolling methods for a roll stand equipped with a flat guiding module |
| JP2010089113A (en) * | 2008-10-07 | 2010-04-22 | Nippon Steel Materials Co Ltd | Multistage rolling mill |
| CN104290439A (en) * | 2014-10-08 | 2015-01-21 | 山东泰鹏环保材料股份有限公司 | Quick changing system of rolling mill and application method of quick changing system |
| CN105033126A (en) * | 2015-09-01 | 2015-11-11 | 浙江陀曼精密机械有限公司 | Energy-saving ring rolling machine |
-
1997
- 1997-09-25 JP JP26033997A patent/JP3775622B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1120172A4 (en) * | 1999-08-11 | 2003-07-02 | Mitsubishi Heavy Ind Ltd | Rolling mill |
| KR100429729B1 (en) * | 1999-08-11 | 2004-05-03 | 미츠비시 쥬고교 가부시키가이샤 | Rolling mill |
| JP2003019504A (en) * | 2001-07-06 | 2003-01-21 | Ishikawajima Harima Heavy Ind Co Ltd | Rolling mill backlash killer |
| WO2004058426A3 (en) * | 2002-12-20 | 2004-12-02 | Betr Forsch Inst Angew Forsch | Flat guiding module, particularly for a roll stand, and rolling methods for a roll stand equipped with a flat guiding module |
| DE10261077B4 (en) | 2002-12-20 | 2014-10-16 | Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH | Flat guide module, in particular for a rolling stand, and rolling method for a rolling stand with flat guide module |
| JP2010089113A (en) * | 2008-10-07 | 2010-04-22 | Nippon Steel Materials Co Ltd | Multistage rolling mill |
| CN104290439A (en) * | 2014-10-08 | 2015-01-21 | 山东泰鹏环保材料股份有限公司 | Quick changing system of rolling mill and application method of quick changing system |
| CN105033126A (en) * | 2015-09-01 | 2015-11-11 | 浙江陀曼精密机械有限公司 | Energy-saving ring rolling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3775622B2 (en) | 2006-05-17 |
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