JP5297394B2 - Slab roll roll stand for continuous casting equipment - Google Patents

Slab roll roll stand for continuous casting equipment Download PDF

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JP5297394B2
JP5297394B2 JP2010006036A JP2010006036A JP5297394B2 JP 5297394 B2 JP5297394 B2 JP 5297394B2 JP 2010006036 A JP2010006036 A JP 2010006036A JP 2010006036 A JP2010006036 A JP 2010006036A JP 5297394 B2 JP5297394 B2 JP 5297394B2
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roll
slab
movable
bearing box
continuous casting
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JP2011143448A (en
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浩志 川口
文樹 浅野
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Kobe Steel Ltd
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Kobe Steel Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a roll stand for rolling a cast slab in continuous casting equipment, which can be constructed by one expansion means for one movement-side roll, and can be arranged at small interval of strands, and in which a plurality of slab rolling amounts can be set in a width range and also at high precision even if it has a low rigidity structurally or thermal expansion caused by a temperature change is generated. <P>SOLUTION: In the roll stand for rolling a cast slab in continuous casting equipment, spacers 13 freely rotatable around a rotary shaft line C1 are interposed between a standard side bearing box 10 freely rotatably supporting a standard side roll 5 and a movable side bearing box 11 freely rotatably supporting a movable side roll 6. The spacers 13 are formed in such a manner that the distance between the confronted sides or confronted apexes in the cross-section orthogonal to the rotary shaft line C1 is changed, the rotary angle of the spacers 13 is changed and, via the confronted sides or apexes, and the standard side bearing box 10 and the movable side bearing box 11 are press-contacted each other, thus the gap between the rolls upon the rolling of the cast slab can be adjustably composed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

本発明は、連続鋳造設備における鋳片圧下ロールスタンドに関し、更には、鋳片圧下量を高精度に設定可能な連続鋳造設備の鋳片圧下ロールスタンドに関するものである。   The present invention relates to a slab reduction roll stand in a continuous casting facility, and further relates to a slab reduction roll stand in a continuous casting facility capable of setting a slab reduction amount with high accuracy.

従来より、取鍋から供給された溶鋼を連続的に鋳造する連続鋳造設備においては、鋳型の下側に複数のロールセグメントが鋳片の引き抜き方向(鋳造方向)に沿って配備され、これら複数のロールセグメントによって鋳片圧下ロールスタンドが構成されている。夫々のロールセグメントは、鋳造した鋳片をサポートするサポートロールを備えたものとなっており、鋳造された鋳片はサポートロールによって支持されて、軽圧下領域においては圧下されつつ引き抜かれるようになっている。   Conventionally, in a continuous casting facility that continuously casts molten steel supplied from a ladle, a plurality of roll segments are arranged along the drawing direction (casting direction) of a slab at the lower side of a mold. A slab pressure roll stand is constituted by the roll segment. Each roll segment is provided with a support roll that supports the cast slab, and the cast slab is supported by the support roll and pulled out while being reduced in the lightly reduced region. ing.

この様な連続鋳造設備を用いた鋳片の鋳造において、良好な鋳片品質を得るためには、軽圧下領域では鋳片断面の中心部に残存する溶鋼の凝固に伴う収縮量に見合った鋳片への圧下を付加することが肝要であり、前述したサポートロールの圧下量の高精度で容易な設定が重要となる。   In casting of slabs using such a continuous casting facility, in order to obtain good slab quality, in the light reduction region, castings that match the shrinkage accompanying solidification of the molten steel remaining in the center of the slab cross section It is important to add a reduction to the piece, and it is important to set the above-described support roll reduction amount with high accuracy and easy.

そこで先ず、従来技術に係る鋳片圧下ロールスタンドに関し、以下添付図8〜10を参照しながら説明する。図は従来技術1に係り、複数のガイドロールセグメントによって軽圧下領域Aを形成する作業の概略説明図、図は従来技術2に係る連続鋳造用軽圧下装置を示し、図(a)はその実施例の正面図、図(b)は他の実施例の側面図である。また、図は従来技術3に係るロールスタンドの平面図である。 Therefore, first, a slab reduction roll stand according to the prior art will be described with reference to FIGS. FIG. 7 relates to the prior art 1, and is a schematic explanatory diagram of the operation of forming the light reduction region A by a plurality of guide roll segments, FIG. 8 shows a light reduction device for continuous casting according to the prior art 2, and FIG. The front view of the Example and figure (b) are the side views of another Example. FIG. 9 is a plan view of a roll stand according to Prior Art 3.

従来技術1は、鋳片の軽圧下技術に関するものであって、複数対のロールで構成するロールセグメントで、複数本の上ロール群を共通の上フレームに配置している。そして、ロールセグメントS5ではその厚さがD1であった鋳片Cを、軽圧下領域AのロールセグメントS6〜S9の上フレームを所定量傾斜させることにより、下ロールと上ロールとのロール間隔を鋳片の引き抜き方向に沿って軽圧下し、ロールセグメントS10ではその厚さをD2にするものである(特許文献1参照)。   Prior art 1 relates to a light reduction technique for slabs, and is a roll segment constituted by a plurality of pairs of rolls, and a plurality of upper roll groups are arranged on a common upper frame. In the roll segment S5, the slab C having a thickness D1 is tilted by a predetermined amount of the upper frame of the roll segments S6 to S9 in the light pressure lowering region A, thereby reducing the roll interval between the lower roll and the upper roll. Light rolling is performed along the drawing direction of the slab, and the thickness of the roll segment S10 is set to D2 (see Patent Document 1).

この場合、鋳片圧下中の圧下力は100〜200トンにも達する大きなもので、当該コラムの伸び及び上フレームの変形(曲げ変形)は非常に大きいものとなる。コラムの伸び及び上フレームの変形の影響により、スタンドの高剛性化を図ることが難しい。このため、上記従来例1に係る連続鋳造用軽圧下は、鋳片圧下中に上ロールを所定位置に維持することが難しく、ロール毎の良好な圧下力(鋳片引き抜き方向の圧下パターン)を達成することが困難である。また、所定の圧下パターンが崩れるため、鋳片内部品質に悪影響を与える。更に、複数本の上ロール群を上フレームに配置している構造のため、ロール毎の圧下量の任意な設定はできない。   In this case, the reduction force during slab reduction is as large as 100 to 200 tons, and the elongation of the column and the deformation (bending deformation) of the upper frame are very large. It is difficult to increase the rigidity of the stand due to the expansion of the column and the deformation of the upper frame. For this reason, the light reduction for continuous casting according to the conventional example 1 is difficult to maintain the upper roll in a predetermined position during the slab reduction, and a good reduction force (a reduction pattern in the slab extraction direction) for each roll. Difficult to achieve. Moreover, since a predetermined reduction pattern collapses, it has a bad influence on slab internal quality. Furthermore, because of the structure in which a plurality of upper roll groups are arranged on the upper frame, it is not possible to arbitrarily set the amount of reduction for each roll.

次に、従来技術2に係る図(a)の連続鋳造用軽圧下装置は、楔形状を有するストッパー部材20により、ロール間隔をロール23,24個別に任意に設定するものである(特許文献2参照)。しかしながら、本図に係る実施例のものでは、斜行装置28を構成する斜行圧力装置(斜行用エアーシリンダー)21や固定台22等がロールスタンド25側部に突出し、隣接するストランドのロールスタンドに干渉するため、3ストランド以上の鋳片案内装置に配備する場合は、ストランド間隔を大きく取らなければならない。また、斜行圧力装置21や固定台22などの突出部が、スタンド交換時の障害になり、前記突出部を破損する危険性がある。 Next, the soft reduction device for continuous casting of Figure 8 according to the prior art 2 (a), the stopper member 20 having a wedge shape, is to arbitrarily set the roll gap roll 23 and 24 separately (JP 2). However, in the embodiment according to this figure, the skew pressure device (skew air cylinder) 21 and the fixing base 22 constituting the skew device 28 protrude from the side of the roll stand 25 and rolls of adjacent strands. In order to interfere with the stand, when the slab guide device of 3 strands or more is deployed, the strand interval must be large. In addition, protrusions such as the skew pressure device 21 and the fixed base 22 become obstacles when the stand is replaced, and there is a risk of damaging the protrusions.

鋳片Wを圧下中の圧下力は100〜200トンにも達し、ロールスタンド25を構成する各部材の鋳片圧下反力による伸び及び変形は、非常に大きいものとなる。これらの伸びと変形の影響により、鋳片圧下中に上ロール24を所定位置に精度良く維持することが難しく、ロール24毎の良好な圧下量(鋳片流れ方向の圧下パターン)を達成することが困難である。所定の圧下パターンが崩れるため、鋳片W内部品質に悪影響を与える。逆に、鋳片圧下中に上ロール24を所定位置に精度良く維持するためには、ロールスタンド25を構成する各部材の剛性を高める必要があり、各部材は極めて大きなものにならざるを得ない。   The reduction force during the reduction of the slab W reaches 100 to 200 tons, and the elongation and deformation of the members constituting the roll stand 25 due to the slab reduction reaction force are very large. Due to the effects of elongation and deformation, it is difficult to accurately maintain the upper roll 24 at a predetermined position during slab reduction, and a good reduction amount (reduction pattern in the slab flow direction) for each roll 24 can be achieved. Have difficulty. Since the predetermined reduction pattern collapses, it adversely affects the internal quality of the slab W. On the contrary, in order to maintain the upper roll 24 at a predetermined position with high accuracy during the slab pressure reduction, it is necessary to increase the rigidity of each member constituting the roll stand 25, and each member must be extremely large. Absent.

また、ロールスタンド25を構成する各部材は、鋳造中に鋳片Wからの輻射熱や高温雰囲気に曝されるため、これら各部材の温度が上昇して熱膨張と熱変形を伴う。このため、目標とする鋳片圧下量を鋳造前(常温時)に精度良く定めたとしても、ひとたび鋳造が開始されると各部材は熱膨張し熱変形するため、初期に設定した鋳片圧下量を維持することができない。各部材の温度は時々刻々と変化するため、鋳片圧下量も時々刻々と変化してしまう。   Moreover, since each member which comprises the roll stand 25 is exposed to the radiant heat and high temperature atmosphere from the slab W during casting, the temperature of these each member rises, and a thermal expansion and a thermal deformation are accompanied. For this reason, even if the target slab reduction amount is accurately determined before casting (at room temperature), once the casting is started, each member is thermally expanded and thermally deformed. The amount cannot be maintained. Since the temperature of each member changes every moment, the slab reduction amount also changes every moment.

一方、図(b)の実施例では、ストッパー部材70を伸縮させる斜行用エアーシリンダー81がロールスタンド側部(鋳片引き抜き方向)に突出し、隣接するロールスタンドに干渉するため、ロールピッチが十分に大きい場合の適用に限定される。鋳片圧下帯においてロールピッチを大きくすると、ロールピッチ間で鋳片のバルジングを生じ鋳片品質を低下させる。鋳片中心部に残存す溶鋼の凝固収縮量に相当する分を圧下することが肝要であり、圧下用ロールのピッチを過大にせず漸次鋳片に適量の圧下を加えることが重要であるが、ロールピッチを大きくせざるを得ず漸次圧下にならない問題がある。また、これらの突出部が、スタンド交換時の障害になり、斜行圧力装置や固定台を破損する危険性がある。 On the other hand, in the embodiment of FIG. 8B , the skew air cylinder 81 for expanding and contracting the stopper member 70 protrudes to the side of the roll stand (in the direction of drawing the slab) and interferes with the adjacent roll stand. Limited to applications where it is large enough. When the roll pitch is increased in the slab reduction zone, slab bulging occurs between the roll pitches, and the slab quality is degraded. It is important to reduce the amount corresponding to the solidification shrinkage of the molten steel remaining in the center of the slab, and it is important to gradually apply an appropriate amount of reduction to the slab without excessively increasing the pitch of the rolling roll. There is a problem that the roll pitch must be increased and the pressure does not gradually decrease. Moreover, these protrusions become obstacles at the time of stand replacement, and there is a risk of damaging the oblique pressure device and the fixing base.

即ち、これら従来技術2に係る連続鋳造用軽圧下装置によれば、ロール隙間の可変範囲を大きくしようとすれば、ストッパー部材70の進退量が大きくなり、前記突出部の張出し量も大きくなってしまうし、スタンド25内の鋳片Wにも干渉してしまう。ロールスタンドのサイドフレームにストッパー部材70を収納する図(b)のケースでは、ストッパー部材70がサイドフレームに干渉するため(サイドフレームの開口部に収納できない)進退量を大きくすることができない。 That is, according to the light reduction device for continuous casting according to these conventional techniques 2, if the variable range of the roll gap is increased, the amount of advancement / retraction of the stopper member 70 is increased, and the amount of protrusion of the protruding portion is also increased. In addition, it interferes with the slab W in the stand 25. In the case of FIG. 8B in which the stopper member 70 is accommodated in the side frame of the roll stand, the advance / retreat amount cannot be increased because the stopper member 70 interferes with the side frame (cannot be accommodated in the opening of the side frame).

次に、従来技術3は、基準側ロール軸受箱33と反基準側ロール軸受箱34との間にスペーサ部材38を挿入することより、鋳片圧下時のロール隙間Gを変更する機構である(特許文献3参照)。鋳片圧下量(ロール隙間G)が一定の場合は特段の不都合はないが、例えば、鋼種毎に圧下パターンを変更するような場合には、調整用ライナーを抜き差してロール隙間Gを都度変更する必要があるため、ロール隙間Gを変更するための作業性が悪い。   Next, the prior art 3 is a mechanism for changing the roll gap G during slab pressure reduction by inserting a spacer member 38 between the reference-side roll bearing box 33 and the non-reference-side roll bearing box 34 ( (See Patent Document 3). When the slab reduction amount (roll gap G) is constant, there is no particular inconvenience. For example, when changing the reduction pattern for each steel type, the roll gap G is changed each time by inserting and removing the adjustment liner. Since it is necessary, the workability for changing the roll gap G is poor.

特開2003−290893号公報JP 2003-290893 A 特開平10−156501号公報JP-A-10-156501 特開平7−9103号公報Japanese Patent Laid-Open No. 7-9103

本発明は、上記背景技術に説明したような諸問題点を解消するためになしたものであって、その目的は、可動側ロール1本に対して伸縮手段1台で構成でき、ストランド間隔も小さく配置可能であって、構造的に低剛性であったり温度変化による熱膨張を生じたとしても、複数の鋳片圧下量を広範囲にかつ高精度に設定可能な連続鋳造設備の鋳片圧下ロールスタンドを提供するものである。 The present invention has been made in order to solve the various problems as described in the background art, and its purpose can be constituted by one expansion / contraction means for one movable roll, and the strand spacing can also be increased. A slab reduction roll for continuous casting equipment that can be set in a wide range and with high accuracy even if it is small in size and structurally has low rigidity or thermal expansion occurs due to temperature changes. A stand is provided.

上記の目的を達成するための本発明は、以下の構成を備える鋳片圧下ロールスタンドからなる。即ち、本発明の請求項1に係る連続鋳造設備の鋳片圧下ロールスタンドが採用した手段は、1本の基準側ロールと、前記基準側ロールの上方に対向配置され、前記基準側ロールと一対をなして鋳片を圧下する1本の可動側ロールと、前記基準側ロールの左端部と右端部との軸受をそれぞれ収納し、前記基準側ロールを回転自在に支持する左右の基準側軸受箱と、前記可動側ロールの左端部と右端部との軸受をそれぞれ収納し、前記可動側ロールを回転自在に支持する左右の可動側軸受箱と、左右ともに中空枠状に形成されて中空の開口部を有し、該開口部の下部に前記左右の基準側軸受箱を収納し、該開口部の上部に前記左右の可動側軸受箱を収納する左右のサイドフレームと、前記左右の可動側軸受箱に支持された前記可動側ロールを昇降させるための伸縮手段と、を備えた連続鋳造設備の鋳片圧下ロールスタンドにおいて、
前記左右のサイドフレームの前記開口部における前記基準側軸受箱と前記可動側軸受箱との間において、鋳片引き抜き方向と平行に延びる1本の回動軸線を中心にして回動可能なスペーサを、前記各軸受箱の前記回動軸線方向における両端側にそれぞれ位置するように設け、
前記スペーサが、前記回動軸線と直交する断面の向かい合う対辺間もしくは対頂点間の距離を変えて形成され、
前記スペーサの回動角度を変更して対向する前記対辺もしくは対頂点を介して、前記基準側軸受箱と前記可動側軸受箱とを互いに圧接することにより、鋳片圧下時のロール間隙が調整可能に構成されたことを特徴とするものである。
This invention for achieving said objective consists of a slab reduction roll stand provided with the following structures. That is, the means adopted by the slab reduction roll stand of the continuous casting equipment according to claim 1 of the present invention is arranged to face one reference side roll and the reference side roll above the reference side roll and a pair of the reference side roll. Left and right reference-side bearing boxes that respectively house one movable-side roll for rolling down the slab and the left and right end bearings of the reference-side roll and rotatably support the reference-side roll And left and right movable side bearing boxes that respectively accommodate the left and right end bearings of the movable side roll and rotatably support the movable side roll, and a hollow opening formed on both the left and right sides in a hollow frame shape. Left and right side frame housing the left and right reference side bearing boxes in the lower part of the opening, and housing the left and right movable side bearing boxes in the upper part of the opening, and the left and right movable side bearings Move up and down the movable roll supported by a box In a slab rolling roll stand of a continuous casting facility provided with expansion and contraction means ,
A spacer that is rotatable about a single rotation axis extending in parallel with the slab drawing direction between the reference-side bearing box and the movable-side bearing box in the opening of the left and right side frames. , Provided so as to be located on both end sides in the rotational axis direction of each bearing box,
The spacer is formed by changing a distance between opposite sides or opposite vertices of a cross section orthogonal to the rotation axis,
By changing the rotation angle of the spacer, the reference side bearing box and the movable side bearing box are pressed against each other via the opposite sides or opposite vertices, so that the roll gap during slab reduction can be adjusted. It is characterized by having been comprised by this.

本発明の請求項2に係る連続鋳造設備の鋳片圧下ローンスタンドが採用した手段は、請求項1に記載の連続鋳造設備の鋳片圧下ロールスタンドにおいて、前記スペーサの回動軸線と直交する断面形状が、多角形、長円形または非真円形に形成されてなることを特徴とするものである。   The means employed by the slab reduction roll stand of the continuous casting equipment according to claim 2 of the present invention is the cross section perpendicular to the rotation axis of the spacer in the slab reduction roll stand of the continuous casting equipment of claim 1. The shape is formed into a polygon, an oval, or a non-true circle.

本発明の請求項3に係る連続鋳造設備の鋳片圧下ローンスタンドが採用した手段は、請求項1または2に記載の連続鋳造設備の鋳片圧下ロールスタンドにおいて、ロール左端側とロール右端側とのそれぞれについて、前記スペーサの前記回動軸線を形成するシャフトを、前記可動側軸受箱に取付けられたシャフト支持部材の貫通孔に、前記可動側軸受箱の可動方向に遊動可能に遊嵌することにより、前記スペーサを前記可動側軸受箱に回動可能に支承するように構成したことを特徴とするものである。 The means employed by the slab reduction roll stand of the continuous casting equipment according to claim 3 of the present invention is the slab reduction roll stand of the continuous casting equipment according to claim 1 or 2, wherein the roll left end side and the roll right end side are For each of the above, a shaft forming the rotation axis of the spacer is loosely fitted in a through hole of a shaft support member attached to the movable bearing box so as to be freely movable in the movable direction of the movable bearing box. Thus, the spacer is rotatably supported on the movable bearing box .

本発明の請求項に係る連続鋳造設備の鋳片圧下ローンスタンドが採用した手段は、請求項1乃至の何れか一つの項に記載の連続鋳造設備の鋳片圧下ロールスタンドにおいて、前記スペーサに、遠隔操作可能な回動手段が設けられてなることを特徴とするものである。 The means adopted by the slab reduction roll stand of the continuous casting equipment according to claim 4 of the present invention is the slab reduction roll stand of the continuous casting equipment according to any one of claims 1 to 3 , wherein the spacer Further, it is characterized in that it is provided with a rotating means that can be remotely operated.

本発明の請求項1に係る連続鋳造設備の鋳片圧下ロールスタンドによれば、左右のサイドフレームの開口部の下部に、1本の基準側ロールを回転自在に支持する左右の基準側軸受箱を収納するとともに、前記開口部の上部に、1本の可動側ロールを回転自在に支持する左右の可動側軸受箱を収納するように構成された鋳片圧下ロールスタンドにおいて、前記左右のサイドフレームの開口部における基準側軸受箱と可動側軸受箱との間に、鋳片引き抜き方向と平行に延びる1本の回動軸線を中心にして回動自在なスペーサが介設されると共に、このスペーサが、前記回動軸線と直交する断面の向かい合う対辺間もしくは対頂点間の距離を変えて形成され、前記スペーサの回動角度を変更して対向する前記対辺もしくは対頂点を介して、前記基準側軸受箱と前記可動側軸受箱とを互いに圧接することにより、鋳片圧下時のロール間隙が調整可能に構成されてなるので、可動側ロール1本に対して該可動側ロールを昇降させる伸縮手段1台で構成でき、ストランド間隔も小さく配置可能であって、構造的に低剛性であったり温度変化による熱膨張を生じたとしても、複数の鋳片圧下量を広範囲にかつ高精度に設定可能である。
また、前記スペーサを、基準側及び可動側の各軸受箱の前記回動軸線方向における両端側にそれぞれ位置するように設けることで、該2個のスペーサを介して基準側軸受箱と可動側軸受箱とを互いに圧接するスペーサ圧接範囲を形成したので、圧接力による軸受箱の変形が少なく、軸受箱や軸受に損傷を与えない。また、大押力圧下スタンドにも適用できる。
また、前記回動軸線を鋳片引き抜き方向と平行に延びるように設定しているので、前記2個のスペーサについての、回動軸線を形成するシャフト等の同調機構や遠隔で回動させるための回動手段の配備が容易になる。
According to the slab reduction roll stand of the continuous casting equipment according to claim 1 of the present invention, the left and right reference-side bearing boxes that rotatably support one reference-side roll at the lower part of the left and right side frame openings. And a left and right side frame in the slab pressure roll stand configured to store left and right movable bearing boxes that rotatably support one movable roll in an upper portion of the opening. Between the reference-side bearing box and the movable-side bearing box at the opening of the slab, a spacer that is rotatable about a single rotation axis extending in parallel with the slab drawing direction is interposed. Is formed by changing the distance between opposite sides or opposite vertices of a cross section perpendicular to the rotation axis, and changing the rotation angle of the spacer via the opposite opposite sides or opposite vertices, the reference By pressing the bearing housing and said movable bearing housing to each other, since the roll gap during slab rolling, which are configured to be adjustable, telescopic means for lifting the movable side roll with respect to one movable side roll Can be configured with a single unit, and can be arranged with a small strand spacing. Even if it is structurally low-rigidity or undergoes thermal expansion due to temperature changes, it is possible to set multiple slab reduction amounts over a wide range and with high accuracy. It is.
Further, by providing the spacers so as to be positioned at both ends in the rotation axis direction of the reference-side and movable-side bearing boxes, the reference-side bearing box and the movable-side bearing are interposed via the two spacers. Since the spacer pressure contact range that presses the box against each other is formed, the deformation of the bearing box due to the pressure contact force is small, and the bearing box and the bearing are not damaged. It can also be applied to a large pressing force reduction stand.
Further, since the rotation axis is set so as to extend in parallel with the slab drawing direction, the two spacers can be rotated by a tuning mechanism such as a shaft that forms the rotation axis or remotely. The rotation means can be easily arranged.

また、本発明の請求項2に係る連続鋳造設備の鋳片圧下ローンスタンドによれば、前記スペーサの回動軸線と直交する断面形状が、多角形、長円形または非真円形に形成されてなるので、簡素で単純な構造を有する低コストな部材によって目的を達成できる。   Moreover, according to the slab reduction loan stand of the continuous casting equipment according to claim 2 of the present invention, the cross-sectional shape orthogonal to the rotation axis of the spacer is formed in a polygon, an oval or a non-true circle. Therefore, the object can be achieved by a low-cost member having a simple and simple structure.

また、本発明の請求項に係る連続鋳造設備の鋳片圧下ローンスタンドによれば、ロール左端側とロール右端側とのそれぞれについて、前記スペーサの前記回動軸線を形成するシャフトを、前記可動側軸受箱に取付けられたシャフト支持部材の貫通孔に、前記可動側軸受箱の可動方向に遊動可能に遊嵌することにより、前記スペーサを前記可動側軸受箱に回動可能に支承するように構成したので、基準側ロールと移動側ロールとのロール間隙を変更する場合は、前記基準側軸受箱と前記可動側軸受箱との間隔を広げる動作のみで、前記スペーサを回動可能な状態にすることができる。 According to the slab reduction loan stand of the continuous casting equipment according to claim 3 of the present invention, the shaft that forms the rotation axis of the spacer for each of the roll left end side and the roll right end side is configured to be movable. The spacer is rotatably supported on the movable side bearing box by loosely fitting in a movable direction of the movable side bearing box in a through hole of a shaft support member attached to the side bearing box. since it is configured, when changing the roll gap between the reference-side roll and the moving-side roll, only the operation to widen the distance between the movable bearing housing to the reference side bearing housing, the spacer rotatable state can do.

そして、本発明の請求項に係る連続鋳造設備の鋳片圧下ローンスタンドによれば、前記スペーサに、遠隔操作可能な回動手段が設けられてなるので、ロール間隔を遠隔操作により設定可能となる。 And according to the slab reduction drone stand of the continuous casting equipment according to claim 4 of the present invention, since the spacer is provided with a turning means that can be remotely operated, the roll interval can be set by remote operation. Become.

本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドの鋳片圧下時の状態を示す正断面図である。It is a front sectional view which shows the state at the time of slab pressure reduction of the slab reduction roll stand of the continuous casting equipment which concerns on Embodiment 1 of this invention. 図1の左側面を示す側面図である。It is a side view which shows the left side surface of FIG. 図2のX部を拡大して示す拡大詳細図である。FIG. 3 is an enlarged detail view showing an X portion in FIG. 図3の左側面図である。FIG. 4 is a left side view of FIG. 3. 図3のY−Y矢視図である。It is a YY arrow line view of FIG. 本発明の実施の形態1に係り、スペーサの他の態様例を示す軸線と直交方向の断面図である。It is sectional drawing of an orthogonal direction with respect to the axis line which concerns on Embodiment 1 of this invention and shows the other example of a spacer. 従来技術1に係り、複数のガイドロールセグメントによって軽圧下領域Aを形According to the prior art 1, the light rolling area A is formed by a plurality of guide roll segments. 成する作業の概略説明図である。It is a schematic explanatory drawing of the work to complete. 従来技術2に係る連続鋳造用軽圧下装置を示し、図(a)はその実施例の正面The light reduction device for continuous casting concerning prior art 2 is shown, and figure (a) is the front of the example. 図、図(b)は他の実施例の側面図である。The figure and the figure (b) are side views of other Examples. 従来技術3に係るロールスタンドの平面図である。It is a top view of the roll stand which concerns on the prior art 3. FIG.

本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドについて、湾曲型連続鋳造設備の水平部や湾曲部に配備され、1対ロール(基準側ロール1本と可動側ロール1本の1対)で構成された鋳片圧下ロールスタンドの態様例を、以下添付図1〜6を参照しながら説明する。
図1は本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドの鋳片圧下時の状態を示す正断面図、図2は図1の左側面を示す側面図、図3は図2のX部を拡大して示す拡大詳細図、図4は図3の左側面図、図5は図3のY−Y矢視図、図6は本発明の実施の形態1に係り、スペーサの他の態様例を示す軸線と直交方向の断面図である。
About the slab reduction roll stand of the continuous casting equipment according to Embodiment 1 of the present invention, it is arranged in a horizontal part or a curved part of the curved continuous casting equipment, and a pair of rolls (one reference side roll and one movable side roll). An example of an embodiment of a slab roll-down roll stand constituted by a pair of slabs will be described below with reference to FIGS.
FIG. 1 is a front sectional view showing a state of a slab pressing roll stand of a slab pressing roll stand of a continuous casting facility according to Embodiment 1 of the present invention, FIG. 2 is a side view showing the left side of FIG. 1, and FIG. 2 is an enlarged detail view showing an X portion in an enlarged manner, FIG. 4 is a left side view of FIG. 3, FIG. 5 is a view taken along the arrow Y-Y in FIG. 3, and FIG. 6 is related to Embodiment 1 of the present invention. It is sectional drawing of the direction orthogonal to the axis which shows the other example of a spacer.

先ず、図1,2において、符号1は基準フレームであり、本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドは、この基準フレーム1の上部両側にサイドフレーム2がボルト固定されると共に、前記サイドフレーム2の頂部にはトップフレーム3が固定して接合され、鋳片Wを対向して圧下する圧下ロール4が備えられている。そして、これら対向する圧下ロール4の間隔を調整するために、前記圧下ロール4が、サイドフレーム2の軸受8,8により回転自在に両端支持された基準側ロール5と、昇降自在な昇降フレーム7の軸受9,9により回転自在に両端支持された可動側ロール6とからなっている。   First, in FIGS. 1 and 2, reference numeral 1 denotes a reference frame, and the slab pressure roll stand of the continuous casting equipment according to Embodiment 1 of the present invention has side frames 2 bolted to both upper sides of the reference frame 1. In addition, a top frame 3 is fixedly joined to the top of the side frame 2 and is provided with a reduction roll 4 that oppresses the slab W oppositely. And in order to adjust the space | interval of these opposing rolling-down rolls 4, the said rolling-down roll 4 is supported by the bearings 8 and 8 of the side frame 2, both ends are rotatably supported, and the raising / lowering frame 7 which can be raised / lowered freely. The movable side roll 6 is supported at both ends rotatably by bearings 9 and 9.

前記基準側ロール5の両端部軸受8,8は、基準側軸受箱10,10内部に収納され、これら基準側軸受箱10,10は、サイドフレーム開口部2aの下部に収納され、基準側軸受箱10,10の下面がサイドフレーム2の開口部下辺2bに当接している。一方、可動側ロール6の両端部軸受9,9は、可動側軸受箱11,11内部に収納され、これら可動側軸受箱11,11は、昇降フレーム7にボルト締結されると共に、基準側軸受箱10,10と対峙する様に、サイドフレーム開口部2aに収納されている。このため、このサイドフレーム2は、基準側軸受箱10,10と可動側軸受箱11,11を支持する軸受箱支持手段として機能する。   Both end bearings 8 and 8 of the reference side roll 5 are accommodated in reference side bearing boxes 10 and 10, and these reference side bearing boxes 10 and 10 are accommodated in the lower part of the side frame opening 2a. The lower surfaces of the boxes 10 and 10 are in contact with the lower side 2 b of the opening of the side frame 2. On the other hand, both end bearings 9 and 9 of the movable side roll 6 are accommodated in the movable side bearing boxes 11 and 11, and these movable side bearing boxes 11 and 11 are bolted to the elevating frame 7 and the reference side bearings. It is stored in the side frame opening 2a so as to face the boxes 10 and 10. For this reason, this side frame 2 functions as a bearing box support means for supporting the reference side bearing boxes 10 and 10 and the movable side bearing boxes 11 and 11.

前記トップフレーム3の中央部には、昇降フレーム7を昇降する駆動源としての油圧シリンダ(伸縮手段)12が取り付けられ、この油圧シリンダ12のシリンダロッド12aが、前記トップフレーム3に形成された開孔部3aを貫通して、前記昇降フレーム7の略中央部に連結ピン12bで連結されている。   A hydraulic cylinder (extension / contraction means) 12 as a drive source for raising and lowering the elevating frame 7 is attached to the center portion of the top frame 3, and a cylinder rod 12 a of the hydraulic cylinder 12 is an opening formed on the top frame 3. The hole 3a passes through and is connected to a substantially central portion of the elevating frame 7 by a connecting pin 12b.

そして、基準側軸受箱10,10と可動側軸受箱11,11との間には、図3〜5に示す如く、スペーサ回動軸線(以下、単に「回動軸線」とも言う)C1に直交する断面が8角形に形成されたスペーサ13,13が、前記回動軸線C1を鋳片引き抜き方向と平行になる様に夫々介設され、この回動軸線C1の周りを回動自在に構成されている。前記スペーサ13は、図4に示す如く、向かい合う四つの対辺間距離L1,L2,L3,L4を夫々異なる距離(寸法)とし、かつ対辺同士が平行になる様に形成されている。 And, between the reference side bearing boxes 10 and 10 and the movable side bearing boxes 11 and 11, as shown in FIGS. 3 to 5, it is orthogonal to the spacer rotation axis (hereinafter also simply referred to as “rotation axis”) C1. The spacers 13 and 13 each having an octagonal cross section are interposed so that the rotation axis C1 is parallel to the slab drawing direction, and is configured to be rotatable around the rotation axis C1. ing. As shown in FIG. 4, the spacers 13 are formed such that the distances L1, L2, L3, and L4 between the four opposite sides are different distances (dimensions) and the opposite sides are parallel to each other.

ロール軸線C2に直交する方向に、各軸受箱10,11の両サイドに介設されたこれらスペーサ13,13同士は、その回動軸線C1を中心にシャフト14で連接されている。スペーサ13,13は8角形に限らず、他の多角形でも良い。また、シャフト14で連接するのではなく、スペーサ13,13同士を一体化的に構成するものであれば、他の形状を有するものでも良い。   These spacers 13 and 13 interposed on both sides of the bearing housings 10 and 11 are connected by a shaft 14 around the rotation axis C1 in a direction perpendicular to the roll axis C2. The spacers 13 and 13 are not limited to octagons but may be other polygons. Moreover, as long as it does not connect with the shaft 14 but the spacers 13 and 13 are comprised integrally, you may have another shape.

可動側軸受箱11,11の下面にはシャフト支持部材15,15が夫々取り付けられ、これらシャフト支持部材15,15の各側面に設けられた貫通孔15a,15aに、シャフト14が貫通されている。この貫通孔15a,15aは、可動側軸受箱11,11の可動方向(上下方向)に長穴として形成され、前記シャフト14が貫通孔15a,15a内を回動自在とされる一方、スペーサ回動軸線C1に直交する水平方向の動きは規制され、可動側軸受箱11,11の可動方向には遊動可能な遊嵌状態に構成されている。   Shaft support members 15 and 15 are respectively attached to the lower surfaces of the movable bearing boxes 11 and 11, and the shaft 14 is passed through through holes 15a and 15a provided on the side surfaces of the shaft support members 15 and 15, respectively. . The through holes 15a, 15a are formed as long holes in the movable direction (vertical direction) of the movable bearing boxes 11, 11, and the shaft 14 is rotatable in the through holes 15a, 15a. The movement in the horizontal direction orthogonal to the movement axis C1 is restricted, and the movable-side bearing boxes 11 and 11 are configured to be loosely fitted in the movable direction.

前記シャフト支持部材15,15は、基準側軸受箱10,10側に配備しても良いし、サイドフレーム2,2側に配備しても良い。また、シャフト支持部材15,15の貫通孔15a,15aを円形とし、その孔径をシャフト14の直径よりも大きなものとし、このシャフト14が、円形の貫通孔15a,15aに遊嵌されるものでも良い。   The shaft support members 15 and 15 may be provided on the reference side bearing boxes 10 and 10 side, or may be provided on the side frames 2 and 2 side. Further, the through holes 15a and 15a of the shaft support members 15 and 15 are circular, and the diameter of the holes is larger than the diameter of the shaft 14, and the shaft 14 is loosely fitted into the circular through holes 15a and 15a. good.

或いは、シャフト支持部材15,15と基準側軸受箱10,10とを一体構造にしても良いし、シャフト支持部材15,15とサイドフレーム2,2とを一体構造にしても良い。更には、シャフト支持部材15,15無しで、シャフト端部のスペーサ13,13をサイドフレーム2,2に収納することも可能である。即ち、例えば、サイドフレーム開口部2a,2aの内壁に長穴形のほぞ穴を設け、このほぞ穴にスペーサ13,13を収納可能である。   Alternatively, the shaft support members 15 and 15 and the reference-side bearing boxes 10 and 10 may be integrated, or the shaft support members 15 and 15 and the side frames 2 and 2 may be integrated. Further, the spacers 13 and 13 at the end of the shaft can be accommodated in the side frames 2 and 2 without the shaft support members 15 and 15. That is, for example, an elongated mortise is provided in the inner walls of the side frame openings 2a and 2a, and the spacers 13 and 13 can be accommodated in the mortise.

図1〜5は、鋳片圧下時の状態を示している。本発明に係る連続鋳造設備の鋳片圧下ロールスタンドは、スペーサ13,13を夫々サイドフレーム2,2に挟んで、基準側軸受箱10,10と可動側軸受箱11,11とを、スペーサ13,13及びシャフト支持部材15,15を介して互いに圧接して、可動側軸受箱11,11の下方への移動を規制することによって、鋳片圧下時のロール隙間Lを規定している。鋳片圧下時のロール隙間Lを変更する場合は、可動側軸受箱11,11を一旦開放側に移動させる。   1-5 has shown the state at the time of slab pressure reduction. The slab reduction roll stand of the continuous casting equipment according to the present invention sandwiches the spacers 13 and 13 between the side frames 2 and 2, respectively, and connects the reference side bearing boxes 10 and 10 and the movable side bearing boxes 11 and 11 to the spacer 13. , 13 and the shaft support members 15 and 15 are pressed against each other to restrict the downward movement of the movable bearing boxes 11 and 11, thereby defining the roll gap L when the slab is being reduced. When changing the roll gap L at the time of slab pressure reduction, the movable bearing boxes 11 and 11 are temporarily moved to the open side.

この時、シャフト14はシャフト支持部材15,15の貫通孔15a,15aと上下方向に遊嵌状態なので、8角形状を有するスペーサ13,13の角部が、前記シャフト支持部材15,15の圧接面15b,15bと干渉することなく、スペーサ13,13を回動させることができる。図4に示す如く、向かい合う対頂点間距離(寸法)Qは、対辺間距離(寸法)L1,L2,L3,L4より大きい。   At this time, since the shaft 14 is loosely fitted in the vertical direction with the through holes 15a, 15a of the shaft support members 15, 15, the corners of the octagonal spacers 13, 13 are pressed against the shaft support members 15, 15. The spacers 13 and 13 can be rotated without interfering with the surfaces 15b and 15b. As shown in FIG. 4, the distance between opposite vertices (dimensions) Q is larger than the distance between opposite sides (dimensions) L1, L2, L3, and L4.

また、シャフト14には、スペーサ13,13を手動回転させるためのハンドル16が取り付けられている。この様な手動ハンドル操作に替えて、前記シャフト14に図示しない回転駆動手段を連接すると共に、この回転駆動手段を回転制御する制御手段を接続すれば、手動によらず遠隔操作により鋳片圧下時のロール隙間Lを変更することも可能である。前記回転駆動手段は、シャフト14と図示しない駆動手段との間にチェーンを配備して、チェーンを介してシャフト14を回動させても良い。   A handle 16 for manually rotating the spacers 13 and 13 is attached to the shaft 14. In place of such manual handle operation, a rotation drive means (not shown) is connected to the shaft 14 and a control means for controlling the rotation of the rotation drive means is connected. It is also possible to change the roll gap L. The rotation drive means may be provided with a chain between the shaft 14 and a drive means (not shown) and rotate the shaft 14 via the chain.

図3に示す様に、基準側軸受箱10における受座17,17を介したスペーサ13,13との圧接面10a,10a、及び可動側軸受箱11におけるシャフト支持部材15,15を介したスペーサ13,13との圧接面11a,11aは、前記基準側軸受箱10と可動側軸受箱11の間であって、各軸受箱10,11に支持される各ロール5,6のロール軸線C2,C2を通る平面に対して両側に、圧接範囲が形成されている。これらの圧接面10a,11aを各軸受箱10,11中央部とすることも可能であるが、油圧シリンダ12の押力は非常に大きい(大断面鋳片においては100〜200トンにもなる)ものである。   As shown in FIG. 3, the pressure contact surfaces 10 a, 10 a with the spacers 13, 13 through the seats 17, 17 in the reference side bearing box 10, and the spacers through the shaft support members 15, 15 in the movable side bearing box 11. The pressure contact surfaces 11a, 11a with the rollers 13, 13 are between the reference side bearing box 10 and the movable side bearing box 11, and are roll axes C2, of the rolls 5, 6 supported by the bearing boxes 10, 11. A pressure contact area is formed on both sides of the plane passing through C2. Although these pressure contact surfaces 10a and 11a can be the center portions of the bearing housings 10 and 11, the pressing force of the hydraulic cylinder 12 is very large (in the case of a large-section slab, it is 100 to 200 tons). Is.

従って、各軸受収納穴と圧接面10a,11aとの間の肉厚が薄い場合は、当該個所がブリッジ状であるため、軸受箱10,11が油圧シリンダ押力で変形し、その結果、軸受8,9も変形するため軸受寿命を損なう。著しくは、軸受箱10,11や軸受8,9が破損に至る。そのため、軸受箱10,11の略全幅を夫々圧接面10a,11aとするか、もしくは軸受箱10,11のスペーサ回動軸線C1方向の両端近傍を夫々圧接面10a,11aにすることが好ましい。   Therefore, when the wall thickness between each bearing housing hole and the pressure contact surfaces 10a and 11a is thin, the portion is bridge-shaped, so that the bearing boxes 10 and 11 are deformed by the hydraulic cylinder pressing force, and as a result, the bearing Since bearings 8 and 9 are also deformed, the bearing life is impaired. Remarkably, the bearing boxes 10 and 11 and the bearings 8 and 9 are damaged. Therefore, it is preferable that the substantially full width of the bearing housings 10 and 11 be the press contact surfaces 10a and 11a, respectively, or the vicinity of both ends of the bearing housings 10 and 11 in the spacer rotation axis C1 direction be the press contact surfaces 10a and 11a, respectively.

スペーサ13,13の回動軸線C1方向に直交する断面は8角形としているので、図4に示す如く、スペーサ13,13を回動軸線C1周りに45度ずつ回動することにより、向かい合う4種類の対辺間距離L1,L2,L3,L4を設定して、鋳片圧下時のロール隙間Lを夫々規定することができる。また、向かい合う対頂点間距離Qも、図示省略するが4種類の対頂点間距離を有するため、これらの対頂点間距離を設定して、鋳片圧下時のロール隙間Lを夫々規定することもできる。更に多角形のスペーサ13,13とすれば、鋳片圧下時のロール隙間Lの選択パターンを増やすことができる。   Since the cross section perpendicular to the rotation axis C1 direction of the spacers 13 and 13 is an octagon, as shown in FIG. 4, the spacers 13 and 13 are rotated by 45 degrees around the rotation axis C1 by four degrees to face each other. By setting the distances L1, L2, L3, and L4 between the opposite sides, it is possible to define the roll gaps L when the slab is reduced. Further, although the distance Q between opposite vertices is also not shown in the figure, there are four types of distances between vertices, so that the distance between the opposite vertices is set to define the roll gap L when the slab is reduced. it can. Furthermore, if it is set as the polygonal spacers 13 and 13, the selection pattern of the roll clearance L at the time of slab reduction can be increased.

また更に、スペーサ13の回動軸線C1方向に直交する断面を多角形でなく曲面形、例えば、図6に示す如く長円形(楕円形)に構成すれば、スペーサ13を回動軸線C1周りに微小角度ずつ回動させて、向かい合う対面間距離をS1,S2,…,SNと設定して、鋳片圧下時のロール隙間Lを無段階に規定することが可能である。前記スペーサ13の回動軸線C1方向に直交する断面は、長円形のほか任意の曲面で形成された非真円形でも良い。   Furthermore, if the cross section perpendicular to the direction of the rotation axis C1 of the spacer 13 is not a polygon but a curved surface, for example, an oval (ellipse) as shown in FIG. 6, the spacer 13 is arranged around the rotation axis C1. It is possible to define the roll gap L at the time of slab reduction steplessly by turning each minute angle and setting the facing distances S1, S2,..., SN. The cross section of the spacer 13 perpendicular to the direction of the rotation axis C1 may be an oval or a non-true circle formed of an arbitrary curved surface.

本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドでは、鋳片圧下時のロール隙間Lは、基準側軸受箱10、受座17、スペーサ13、シャフト支持部材15及び可動側軸受箱11は関与するが、その他の構成部品(サイドフレーム2、トップフレーム3及び昇降フレーム7等)の応力や熱による変形の影響を全く受けることがない。このため、鋳片圧下中のロール間隔Lを、精度良く、常時安定して維持することが可能である。   In the slab pressure roll stand of the continuous casting equipment according to Embodiment 1 of the present invention, the roll gap L during slab pressure reduction is based on the reference side bearing box 10, the seat 17, the spacer 13, the shaft support member 15, and the movable side. Although the bearing box 11 is involved, it is not affected at all by the stress of other components (such as the side frame 2, the top frame 3, and the lifting frame 7) or the deformation due to heat. For this reason, it is possible to maintain the roll space | interval L during slab pressure reduction accurately and always stably.

従来技術によれば、鋳片Wの圧下反力により、サイドフレームの伸びや変形を生じると共に、トップフレームや昇降フレーム等が変形する。このため、鋳片圧下時のロール隙間は、所期のロール隙間よりも実際には大きなものになっている。これを防止するためには、ロールスタンドを構成する部品の剛性を高める必要があった。そのため、この様な従来技術において、本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドと同等の精度でロール隙間を確保しようとすれば、サイドフレームやトップフレーム、昇降フレーム等の断面を異常に大きなものにする必要があり、現実的なものではない。   According to the prior art, the side frame is stretched and deformed by the rolling reaction force of the slab W, and the top frame and the lifting frame are deformed. For this reason, the roll gap at the time of slab pressure reduction is actually larger than the intended roll gap. In order to prevent this, it is necessary to increase the rigidity of the parts constituting the roll stand. Therefore, in such a conventional technique, if it is intended to secure a roll gap with the same accuracy as the slab pressure roll stand of the continuous casting equipment according to Embodiment 1 of the present invention, a side frame, a top frame, a lifting frame, etc. The cross section needs to be abnormally large, which is not realistic.

更に、これらの構成部品は熱変形を伴う。熱変形は、部品の剛性を高めることでは防止することができない。また、これらの構成部品を恒温に保つことは、非常に困難を要する。当然、本発明に係るスペーサ13においても、油圧押力による圧縮変形や高温環境での熱変形を伴うが、スペーサ13そのものが小型であるため、その圧縮変形や熱変形は非常に小さい。このため、従来技術とは比較にならぬ程のロール隙間(即ち、鋳片圧下量)精度を維持することができる。   In addition, these components are subject to thermal deformation. Thermal deformation cannot be prevented by increasing the rigidity of the component. Also, it is very difficult to keep these components at a constant temperature. Of course, the spacer 13 according to the present invention is also accompanied by compression deformation due to hydraulic pressing force and thermal deformation in a high temperature environment, but since the spacer 13 itself is small, the compression deformation and thermal deformation are very small. For this reason, it is possible to maintain the accuracy of the roll gap (that is, the amount of slab reduction) that is incomparable with the prior art.

以上の通り、本発明の実施の形態1に係る連続鋳造設備の鋳片圧下ロールスタンドによれば、基準側軸受箱10,10と可動側軸受箱11,11との間に、回動軸線C1回りを回動自在なスペーサ13,13が介設されると共に、このスペーサ13,13が、前記軸線C1と直交するスペーサ13,13の断面の向かい合う対辺間もしくは対頂点間の距離を変えて形成されている。   As described above, according to the slab reduction roll stand of the continuous casting equipment according to the first embodiment of the present invention, the rotation axis C1 is between the reference side bearing box 10, 10 and the movable side bearing box 11, 11. Spacers 13 and 13 that are rotatable around are provided, and the spacers 13 and 13 are formed by changing the distance between the opposite sides or the opposite vertices of the cross section of the spacers 13 and 13 orthogonal to the axis C1. Has been.

そして、前記スペーサ13,13の回動角度を変更して対向する前記対辺もしくは対頂点を介して、前記基準側軸受箱10,10と可動側軸受箱11,11とを互いに圧接することにより、鋳片圧下時のロール間隙Lが調整可能に構成されている。その結果、1本の可動側ロール6に対して1台の伸縮手段12で構成でき、ストランド間隔も小さく配置可能であって、構造的に低剛性であったり温度変化による熱膨張を生じたとしても、複数の鋳片圧下量Lを広範囲にかつ高精度に設定できるのである。 Then, by changing the rotation angle of the spacers 13 and 13 and opposing the opposite sides or opposite vertices, the reference-side bearing boxes 10 and 10 and the movable-side bearing boxes 11 and 11 are pressed against each other, The roll gap L during slab pressure reduction is configured to be adjustable. As a result, it is possible to configure with one expansion / contraction means 12 for one movable side roll 6, and it is possible to arrange the strand spacing to be small, structurally low rigidity or thermal expansion due to temperature change. In addition, the plurality of slab reduction amounts L can be set in a wide range and with high accuracy.

以上説明した通り、本発明に係る連続鋳造設備の鋳片圧下ロールスタンドによれば、多数の圧下量パターンを容易に設定可能であり、可動側ロール1本に対して油圧シリンダ1台で構成できる。そのため、圧下量設定手段がスタンド側部に突出することなく構成されるので、ストランド間隔も小さく配置可能となり、圧下量の設定やメンテナンスを寄付き性良好な場所で安全に実施できる。   As described above, according to the slab reduction roll stand of the continuous casting equipment according to the present invention, a number of reduction amount patterns can be easily set, and one hydraulic cylinder can be configured for one movable roll. . For this reason, the reduction amount setting means is configured without projecting to the side of the stand, so that the strand interval can be arranged small, and the reduction amount can be set and maintained safely at a place with good closeness.

尚、本発明に係る連続鋳造設備の鋳片圧下ロールスタンドは、湾曲型連続鋳造設備の水平部や湾曲部に配備する態様例を示したが、本発明に係る連続鋳造設備の鋳片圧下ロールスタンドを、垂直型連続鋳造設備に適用することも可能である。その場合、上記で用いた「昇降」、「水平方向」、「トップ」、「上側」及び「上面」等の表現は、本願発明の技術思想の範囲に基づいて変更すべきことは当然である。   In addition, although the slab reduction roll stand of the continuous casting equipment which concerns on this invention showed the example of an aspect arrange | positioned to the horizontal part or curved part of a curved type continuous casting equipment, the slab reduction roll of the continuous casting equipment which concerns on this invention It is also possible to apply the stand to a vertical continuous casting facility. In that case, the expressions such as “elevation”, “horizontal direction”, “top”, “upper side” and “upper side” used above should naturally be changed based on the scope of the technical idea of the present invention. .

C1:(スペーサ)回動軸線:, C2:ロール軸線,
S1,S2,…,SN:対面間距離(寸法),
L:ロール間隔(圧下量),
L1,L2,…,LN:対辺間距離(寸法)
Q:対頂点間距離(寸法),
W:鋳片,
1:基準フレーム,
2:サイドフレーム(軸受箱支持手段),
2a:サイドフレーム開口部, 2b:開口部下辺,
3:トップフレーム, 3a:開孔部,
4:圧下ロール,
5:基準側ロール,
6:可動側ロール,
7:昇降フレーム,
8,9:軸受,
10:基準側軸受箱, 10a:圧接面,
11:可動側軸受箱, 11a:圧接面,
12:油圧シリンダ(昇降手段), 12a:シリンダロッド, 12b:連結ピン,
13:スペーサ,
14:シャフト,
15:シャフト支持部材, 15a:貫通孔, 15b:圧接面,
16:ハンドル,
17:受座
C1: (Spacer) rotation axis: C2: Roll axis
S1, S2, ..., SN: Distance between faces (dimensions),
L: Roll interval (rolling amount),
L1, L2, ..., LN: Distance between opposite sides (dimensions)
Q: Distance between vertices (dimensions),
W: slab,
1: Reference frame,
2: Side frame (bearing box support means),
2a: side frame opening, 2b: opening lower side,
3: Top frame, 3a: Opening part,
4: Rolling roll,
5: Reference side roll,
6: movable roll,
7: Elevating frame,
8, 9: bearing,
10: reference side bearing box, 10a: pressure contact surface,
11: movable bearing box, 11a: pressure contact surface,
12: Hydraulic cylinder (elevating means), 12a: Cylinder rod, 12b: Connecting pin,
13: Spacer,
14: Shaft,
15: shaft support member, 15a: through hole, 15b: pressure contact surface,
16: Handle,
17: Seat

Claims (4)

1本の基準側ロールと、前記基準側ロールの上方に対向配置され、前記基準側ロールと一対をなして鋳片を圧下する1本の可動側ロールと、前記基準側ロールの左端部と右端部との軸受をそれぞれ収納し、前記基準側ロールを回転自在に支持する左右の基準側軸受箱と、前記可動側ロールの左端部と右端部との軸受をそれぞれ収納し、前記可動側ロールを回転自在に支持する左右の可動側軸受箱と、左右ともに中空枠状に形成されて中空の開口部を有し、該開口部の下部に前記左右の基準側軸受箱を収納し、該開口部の上部に前記左右の可動側軸受箱を収納する左右のサイドフレームと、前記左右の可動側軸受箱に支持された前記可動側ロールを昇降させるための伸縮手段と、を備えた連続鋳造設備の鋳片圧下ロールスタンドにおいて、
前記左右のサイドフレームの前記開口部における前記基準側軸受箱と前記可動側軸受箱との間において、鋳片引き抜き方向と平行に延びる1本の回動軸線を中心にして回動可能なスペーサを、前記各軸受箱の前記回動軸線方向における両端側にそれぞれ位置するように設け、
前記スペーサが、前記回動軸線と直交する断面の向かい合う対辺間もしくは対頂点間の距離を変えて形成され、
前記スペーサの回動角度を変更して対向する前記対辺もしくは対頂点を介して、前記基準側軸受箱と前記可動側軸受箱とを互いに圧接することにより、鋳片圧下時のロール間隙が調整可能に構成されたことを特徴とする連続鋳造設備の鋳片圧下ロールスタンド。
One reference-side roll, a single movable-side roll that is disposed above the reference-side roll and that forms a pair with the reference-side roll to reduce the cast piece, and a left end portion and a right end of the reference-side roll The left and right reference side bearing boxes that rotatably support the reference side roll, and the left and right end bearings of the movable side roll, respectively, and the movable side roll. The left and right movable side bearing boxes that are rotatably supported, and the left and right reference side bearing boxes are housed in the lower part of the opening, and are formed in a hollow frame shape on both the left and right sides. A continuous casting facility comprising: left and right side frames that house the left and right movable side bearing boxes; and expansion and contraction means for moving up and down the movable side roll supported by the left and right movable side bearing boxes. In the slab pressure roll stand,
A spacer that is rotatable about a single rotation axis extending in parallel with the slab drawing direction between the reference-side bearing box and the movable-side bearing box in the opening of the left and right side frames. , Provided so as to be located on both end sides in the rotational axis direction of each bearing box,
The spacer is formed by changing a distance between opposite sides or opposite vertices of a cross section orthogonal to the rotation axis,
By changing the rotation angle of the spacer, the reference side bearing box and the movable side bearing box are pressed against each other via the opposite sides or opposite vertices, so that the roll gap during slab reduction can be adjusted. A slab reduction roll stand for continuous casting equipment, characterized in that it is configured as described above.
前記スペーサの回動軸線と直交する断面形状が、多角形、長円形または非真円形に形成されてなることを特徴とする請求項1に記載の連続鋳造設備の鋳片圧下ロールスタンド。   The slab pressure roll stand of the continuous casting equipment according to claim 1, wherein a cross-sectional shape perpendicular to the rotation axis of the spacer is formed into a polygonal shape, an oval shape, or a non-true circle shape. ロール左端側とロール右端側とのそれぞれについて、前記スペーサの前記回動軸線を形成するシャフトを、前記可動側軸受箱に取付けられたシャフト支持部材の貫通孔に、前記可動側軸受箱の可動方向に遊動可能に遊嵌することにより、前記スペーサを前記可動側軸受箱に回動可能に支承するように構成したことを特徴とする請求項1または2に記載の連続鋳造設備の鋳片圧下ロールスタンド。 For each of the roll left end side and the roll right end side, a shaft that forms the rotation axis of the spacer is inserted into a through-hole of a shaft support member attached to the movable bearing box, and the movable direction of the movable bearing box The slab rolling roll of the continuous casting equipment according to claim 1 or 2 , wherein the spacer is rotatably supported on the movable-side bearing box by loosely fitting to the movable bearing box. stand. 前記スペーサに、遠隔操作可能な回動手段が設けられてなることを特徴とする請求項1乃至の何れか一つの項に記載の連続鋳造設備の鋳片圧下ロールスタンド。 The slab pressure roll stand of the continuous casting equipment according to any one of claims 1 to 3 , wherein the spacer is provided with a rotating means that can be remotely operated.
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