JP3129179B2 - U-shaped steel sheet pile straightening method and straightening jig - Google Patents
U-shaped steel sheet pile straightening method and straightening jigInfo
- Publication number
- JP3129179B2 JP3129179B2 JP07343566A JP34356695A JP3129179B2 JP 3129179 B2 JP3129179 B2 JP 3129179B2 JP 07343566 A JP07343566 A JP 07343566A JP 34356695 A JP34356695 A JP 34356695A JP 3129179 B2 JP3129179 B2 JP 3129179B2
- Authority
- JP
- Japan
- Prior art keywords
- jig
- sheet pile
- steel sheet
- straightening
- flange
- 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.)
- Expired - Fee Related
Links
Landscapes
- Straightening Metal Sheet-Like Bodies (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば土木、建築
用に用いられるＵ型鋼矢板の中で、特にフランジ部と継
手部 (爪部) の間に腕部を有するＵ型鋼矢板のプレス矯
正方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for straightening a U-shaped steel sheet pile, which is used for civil engineering and construction purposes, in particular, a U-shaped steel sheet pile having an arm portion between a flange portion and a joint portion (claw portion). It is about.
【０００２】[0002]
【従来の技術】従来、熱間圧延によって製造された鋼矢
板は鋸断後、冷却が進行するにつれて内部応力のため長
さ方向に反り、曲がり等の形状不良が発生する。ここ
で、「反り」とは、図１に示すようにＵ型鋼矢板１の矢
板壁２に対し直角方向の大曲り、端曲がりを言い、「曲
がり」とは、図２に示すようにＵ型鋼矢板１の矢板壁２
に対して平行方向の大曲り、端曲がりを意味する。JIS
A 5528規格において、Ｕ型鋼矢板の曲がりについては、
長さ10ｍ以下に対し、全長×0.12％以下、10ｍを超える
ものに対しては (全長−10m)×0.10％＋12mm以下と規定
されており、また反りについても、長さ10ｍ以下に対し
ては、全長×0.25％以下、10ｍを超えるものに対して
は、 (全長−10m)×0.20％＋25mm以下と規定している。2. Description of the Related Art Conventionally, steel sheet piles manufactured by hot rolling are warped in the length direction due to internal stress as the cooling proceeds after sawing, and shape defects such as bending occur. Here, "warp" refers to a large bend or end bend in the direction perpendicular to the sheet pile wall 2 of the U-shaped steel sheet pile 1 as shown in FIG. 1, and "bend" means a U-shaped steel sheet pile as shown in FIG. Sheet pile wall 2 of sheet pile 1
Mean a large bend in the direction parallel to the end. JIS
In the A 5528 standard, regarding the bending of U-shaped steel sheet pile,
For a length of 10m or less, the total length x 0.12% or less, and for those exceeding 10m, it is specified as (total length-10m) x 0.10% + 12mm or less. The total length is 0.25% or less, and for those exceeding 10m, it is specified as (total length-10m) x 0.20% + 25mm or less.
【０００３】このような形状不良の矯正は、一般にロー
ラ矯正機で行われるが、このローラ矯正機は例えば４個
の上方ローラの下方に３個のローラを上方ローラと千鳥
型に配置してあるため、鋼矢板の前後の両端は十分な矯
正効果を発揮し得ない。特に前後端の反り・曲がり不良
はローラ矯正機では矯正され難く、ローラ矯正後、前後
端のみプレス矯正機で矯正するのが一般的である。図３
は被矯正材であるＵ型鋼矢板１に曲がりが発生した場合
のこのプレス矯正機による矯正操作を図示するものであ
る。[0003] Correction of such a shape defect is generally performed by a roller straightening machine. In this roller straightening machine, for example, three rollers are arranged below the four upper rollers in a staggered manner with the upper rollers. Therefore, the front and rear ends of the steel sheet pile cannot exert a sufficient straightening effect. In particular, it is difficult to correct a warp or bending defect at the front and rear ends with a roller straightening machine, and after the roller straightening, it is general to correct only the front and rear ends with a press straightening machine. FIG.
Fig. 3 illustrates a straightening operation by the press straightening machine when a bending occurs in the U-shaped steel sheet pile 1 as a material to be straightened.
【０００４】一般に、プレス矯正作業は、矯正機の左右
一対の押圧ロッドまたは下方向押圧ロッドで繰り返し押
圧して行うが、左右曲がり矯正を行う場合、曲がり方向
によって左右いずれか一方のロッドを固定し、他方のロ
ッドで被矯正材のフランジ外面を押圧することによって
行う。この際、プレス力を与える押圧ロッド( 図示せ
ず) と反対側については、図示のように、被矯正材であ
るＵ型鋼矢板１の一方のフランジ外面４を支持する治具
６、８を２箇所設置し、被矯正材の移動を拘束するのが
一般的である。Generally, press straightening work is performed by repeatedly pressing with a pair of right and left pressing rods or downward pressing rods of a straightening machine. When performing right and left bending, one of the right and left rods is fixed depending on the bending direction. The pressing is performed by pressing the outer surface of the flange of the material to be corrected with the other rod. At this time, the jigs 6 and 8 for supporting one flange outer surface 4 of the U-shaped steel sheet pile 1 as a material to be corrected are mounted on the opposite side of a pressing rod (not shown) for applying a pressing force, as shown in FIG. It is common to place a part and restrict the movement of the material to be corrected.
【０００５】しかしながら、Ｕ型鋼矢板のうち左右方向
の曲げに対する剛性が高いＵ型鋼矢板の場合、図４(a)
および図４(b) にそれぞれ示すように、片側のフランジ
外面４をプレスで押圧しても曲がりが矯正されずに、図
４(a) に点線で示すように、被矯正材の幅が狭くなる方
向に断面形状を変形させてしまうほか、図４(b) に示す
ように押圧したフランジを局部的にへこませてしまう等
の問題が発生していた。このような問題は、特にフラン
ジ部と継手部 (爪部) の間に腕部を有するＵ型鋼矢板の
曲がりを矯正しようとする場合に顕著であった。[0005] However, in the case of the U-shaped steel sheet pile having high rigidity against bending in the left-right direction among the U-shaped steel sheet piles, FIG.
As shown in FIG. 4B and FIG. 4B, the bending is not corrected by pressing the flange outer surface 4 on one side with a press, and the width of the material to be corrected is narrow as shown by the dotted line in FIG. In addition to deforming the cross-sectional shape in a certain direction, there have been problems such as the local depression of the pressed flange as shown in FIG. 4 (b). Such a problem has been remarkable particularly when the bending of a U-shaped steel sheet pile having an arm portion between a flange portion and a joint portion (claw portion) is to be corrected.
【０００６】[0006]
【発明が解決しようとする課題】本発明の第一の目的
は、上述のような従来のＵ型鋼矢板の左右方向の「曲が
り」のプレス矯正方法および矯正に用いられる治具の欠
点を解決する矯正方法およびそれに用いる治具を提供す
ることである。SUMMARY OF THE INVENTION A first object of the present invention is to solve the drawbacks of the above-mentioned conventional method for straightening a "bend" of a U-shaped steel sheet pile in the lateral direction and a jig used for straightening. An object of the present invention is to provide a straightening method and a jig used for the method.
【０００７】本発明のさらに具体的目的は、Ｕ型鋼矢板
のうち特にフランジ部と継手部 (爪部) の間に腕部を有
するＵ型鋼矢板のような製品横方向の曲げ剛性の高い鋼
矢板の「曲がり」を効率よく矯正し、矯正作業能率の向
上を図ることによって精整工程の滞留を解消し、客先納
期遅れの発生を防止することのほか、従来の矯正方法で
は直せなかった製品形状不良の救済を行うことによって
歩留向上を図ることのできる矯正方法およびそれに用い
る治具を提供することである。A more specific object of the present invention is to provide a steel sheet pile having a high bending rigidity in a lateral direction, such as a U-type sheet pile having an arm portion between a flange portion and a joint portion (claw portion). In addition to eliminating the stagnation of the refining process, preventing delays in customer delivery, and improving the efficiency of straightening work by improving straightening of products, products that could not be corrected by conventional straightening methods An object of the present invention is to provide a correction method capable of improving the yield by relieving a shape defect and a jig used for the correction method.
【０００８】[0008]
【課題を解決するための手段】本発明者は、製品横方向
の曲げ剛性の高い鋼矢板の曲がりを容易にプレス矯正す
るためには、片側のフランジの外面を押圧することに加
えて、もう一方のフランジ内面を同時に同一方向に押圧
することが有効であるとの、膨大な実験結果により得ら
れた知見に基づき、本発明を完成するに至ったのであ
る。すなわち、本発明の要旨とするところは以下の内容
である。SUMMARY OF THE INVENTION In order to easily correct the bending of a steel sheet pile having high bending stiffness in the lateral direction of the product, the present inventor has proposed not only pressing the outer surface of the flange on one side, but also another method. The present invention has been completed based on the knowledge obtained through extensive experimental results that it is effective to simultaneously press one flange inner surface in the same direction. That is, the gist of the present invention is as follows.
【０００９】(1) Ｕ型鋼矢板の熱間圧延工程で発生した
左右方向の曲がりをプレスを用いて矯正する方法におい
て、当該鋼矢板の片側フランジの外面を押圧すると同時
に、もう一方のフランジの内面を押圧することを特徴と
するＵ型鋼矢板の矯正方法。(1) In a method of correcting a right and left bending generated in a hot rolling process of a U-type steel sheet pile by using a press, an outer surface of one flange of the steel sheet pile is pressed and an inner surface of the other flange is simultaneously pressed. A method for correcting a U-shaped steel sheet pile, characterized by pressing
【００１０】(2) Ｕ型鋼矢板の片側フランジの外面を押
圧する面を有する第一治具、さらに当該第一治具と連結
され、もう一方のフランジの内面を押圧する面を有する
第二治具の双方を組み合わせてなることを特徴とするＵ
型鋼矢板の矯正治具。(2) A first jig having a surface for pressing the outer surface of one side flange of the U-shaped steel sheet pile, and a second jig connected to the first jig and having a surface for pressing the inner surface of the other flange. U characterized by combining both of the components
Straightening jig for steel sheet pile.
【００１１】(3) Ｕ型鋼矢板のフランジの外面を押圧す
る面を有する第一治具に対し、フランジの内面を押圧す
る第二治具の取付け、取り外しが可能な嵌合部を両治具
の連結部分に設けたことを特徴とする上記(2) 記載のＵ
型鋼矢板の矯正治具。(3) The first jig having a surface for pressing the outer surface of the flange of the U-shaped steel sheet pile and the second jig for pressing the inner surface of the flange can be attached to and detached from the first jig. (2) characterized in that the U
Straightening jig for steel sheet pile.
【００１２】(4) Ｕ型鋼矢板のフランジの外面を押圧す
る面を有する第一治具に対し、フランジの内面を押圧す
る第二治具の製品幅方向の相対位置変更が可能な調整機
構を両治具の連結部分に設けたことを特徴とする上記
(2) または(3) 記載のＵ型鋼矢板の矯正治具。(4) An adjustment mechanism capable of changing the relative position in the product width direction of the second jig pressing the inner surface of the flange with respect to the first jig having a surface pressing the outer surface of the flange of the U-shaped steel sheet pile. The jig is provided at a connection portion between the two jigs.
The jig for correcting a U-shaped steel sheet pile according to (2) or (3).
【００１３】[0013]
【発明の実施の形態】本発明にかかるプレス矯正方法お
よびそれに用いる治具について添付図面を参照しながら
詳細に説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A press straightening method according to the present invention and a jig used therefor will be described in detail with reference to the accompanying drawings.
【００１４】図５に、本発明のＵ型鋼矢板の曲がりを除
去するためのプレス矯正方法の概略説明図を示す。比較
のためにＵ型鋼矢板の曲がりを除去するための従来のプ
レス矯正方法を図６に示す。なお、これらの場合、Ｕ型
鋼矢板としてフランジ部と継手部の間に腕部を有するＵ
型鋼矢板を用いる例を示す。FIG. 5 is a schematic explanatory view of a press straightening method for removing bending of a U-shaped sheet pile according to the present invention. FIG. 6 shows a conventional press straightening method for removing bending of a U-shaped steel sheet pile for comparison. In these cases, a U-shaped steel sheet pile having an arm between the flange and the joint is used.
The example which uses a shape steel sheet pile is shown.
【００１５】本発明の矯正方法によれば、図５に矢印で
プレス力として示すように、被矯正材としてのＵ型鋼矢
板10の片側フランジ12の外面13を押圧すると同時に、も
う一方のフランジ14の内面15を同一方向に押圧するため
に、フランジ14、16の片側だけに外力が集中することな
く、従って製品の幅が狭まかったり、フランジ14、16に
局部的なへこみ等の局部変形をを発生させることがな
い。According to the straightening method of the present invention, the outer surface 13 of one side flange 12 of the U-shaped steel sheet pile 10 as the material to be straightened is pressed at the same time as the other flange 14 as shown by the pressing force by an arrow in FIG. Since the inner surface 15 is pressed in the same direction, the external force does not concentrate on only one side of the flanges 14 and 16, so that the width of the product is narrowed and local deformation such as local dents on the flanges 14 and 16 is prevented. Does not occur.
【００１６】このとき、片側フランジ12の外面13を押圧
するプレス力と、フランジ14の内面15を押圧するプレス
力とは、同一であっても多少異なったものであってもよ
いが、製品幅変動やフランジの局部変形を防止するため
には、できるだけ同じプレス力で両面を押圧することが
好ましい。At this time, the pressing force for pressing the outer surface 13 of the one-sided flange 12 and the pressing force for pressing the inner surface 15 of the flange 14 may be the same or slightly different. In order to prevent fluctuation and local deformation of the flange, it is preferable to press both sides with the same pressing force as much as possible.
【００１７】この点、従来法によれば、図６に示すよう
に、Ｕ型鋼矢板10の片側フランジ12の外面13だけにプレ
ス力を掛けて押圧するために、片側のフランジ12に局部
的なへこみ等の局部変形が生じてしまう。In this respect, according to the conventional method, as shown in FIG. 6, since only the outer surface 13 of the one-sided flange 12 of the U-shaped steel sheet pile 10 is pressed by applying a pressing force, the one-sided flange 12 is locally Local deformation such as dents occurs.
【００１８】図７は、本発明の矯正方法において用いる
治具の一例を図示したものであって、被矯正材としての
Ｕ型鋼矢板10のフランジ12の外面13に接触させて押圧す
るための第一治具20と、当該フランジ12を跨いでもう一
方のフランジ14の内面15に接触させて押圧するための第
二治具22とから構成されている。以下において、第一治
具を単に治具Ａと、第二治具を治具Ｂと称する。FIG. 7 shows an example of a jig used in the straightening method of the present invention. The jig is used to contact and press the outer surface 13 of the flange 12 of the U-shaped steel sheet pile 10 as a material to be straightened. It comprises one jig 20 and a second jig 22 for straddling the flange 12 and contacting and pressing the inner surface 15 of the other flange 14. Hereinafter, the first jig is simply referred to as jig A, and the second jig is referred to as jig B.
【００１９】図７において、治具Ａと治具Ｂとは、連結
部分24でもって適宜連結されており、例えば治具Ａ、Ｂ
を適宜嵌着させてから治具Ｂ側に設けられたネジ穴28を
通じて、ボルト26で固定されるようにしてもよい。この
連結の形態としては、一体構造であってもよいが、その
外に単なる嵌合、ピンとピン穴とによる結合等も考えら
れる。しかし、上述の嵌合ねじ式がもっとも簡便かつ確
実な構造であって好ましい。In FIG. 7, a jig A and a jig B are appropriately connected by a connecting portion 24. For example, the jigs A and B
May be fixed by bolts 26 through screw holes 28 provided on the jig B side. As a form of this connection, an integral structure may be used, but other than that, a simple fitting, a connection by a pin and a pin hole, etc. are also conceivable. However, the above-mentioned fitting screw type is the simplest and most reliable structure and is preferred.
【００２０】このように構成したのち、図示例の場合に
は治具Ａに設けたプレスラムヘッド連結部30にプレス力
を付与することで治具Ａ、Ｂに同じプレス力を付与して
両フランジ面をそれぞれ押圧して本発明の矯正方法を実
施するのである。After the above configuration, in the case of the illustrated example, the same pressing force is applied to the jigs A and B by applying a pressing force to the press ram head connecting portion 30 provided on the jig A. The straightening method of the present invention is performed by pressing the flange surfaces.
【００２１】治具Ａと治具Ｂとは取り扱いし易くするた
めに、図示例では連結部分において取付け、取外しを容
易にするために分離できるような構造としたが、もちろ
ん前述のように一体構造としても良い。The jig A and the jig B are configured so that they can be attached at the connecting portion and separated for easy removal in the illustrated example in order to facilitate the handling. It is good.
【００２２】いずれにせよ、本発明にかかるプレス矯正
法によってＵ型鋼矢板の曲がりを矯正するには、治具
Ａ、Ｂの組合せから成る治具は、例えば図３に示すよう
に、プレスの先端・押圧部に１個および被矯正材の支持
側に２個各々取り付けて使用する。ただし、具体的な矯
正操作については従来のそれと同様にして行えばよいこ
とから、これ以上の説明を略す。In any case, in order to correct the bending of the U-shaped steel sheet pile by the press straightening method according to the present invention, a jig composed of a combination of jigs A and B, for example, as shown in FIG. -One is attached to the pressing part and two are attached to the support side of the material to be corrected. However, since a specific correction operation may be performed in the same manner as the conventional correction operation, further description is omitted.
【００２３】図７に示す矯正治具に関しては、治具Ａと
治具Ｂとは連結部分でもって結合されているが、その両
治具の嵌合箇所に余裕を設けることにより、製品幅方向
に治具Ａと治具Ｂの相対位置調整が可能であるように構
成してもよい。これにより、被矯正材の寸法変動 (幅変
動) に応じてフランジ外面ともう一方のフランジ内面を
同時に押圧する際のプレス力を適切に配分し、被圧延材
の局部変形を生じることなく効率よく曲がり矯正が可能
となる。In the straightening jig shown in FIG. 7, the jig A and the jig B are connected by a connecting portion. The relative positions of the jigs A and B may be adjusted. As a result, the pressing force when simultaneously pressing the outer surface of the flange and the inner surface of the other flange at the same time according to the dimensional fluctuation (width fluctuation) of the material to be corrected is efficiently distributed, and the material to be rolled is efficiently prevented from being locally deformed. Bending correction becomes possible.
【００２４】このような態様は、図８に示すように、治
具Ａ20と治具Ｂ22との連結部分24を一種のスライド式と
してこれに例えばねじ式の固定機構を設けるようにして
構成してもよい。In such an embodiment, as shown in FIG. 8, the connecting portion 24 between the jig A20 and the jig B22 is formed as a kind of slide type, and for example, a screw type fixing mechanism is provided thereto. Is also good.
【００２５】なお、図７にはＵ型鋼矢板として継手部(
爪部) とフランジの間に腕部を有する鋼矢板を例示した
が、一般の (上記腕部のない) Ｕ型鋼矢板であってもよ
く、治具形状を製品形状に合わせて若干変更するだけで
本発明の効果は同じである。また、図では被矯正材の姿
勢としてＵ型の例を示したが、逆Ｕ型の姿勢であっても
同様であって、被矯正材の形状に合わせて治具の上下を
反転するだけで本発明の効果を発揮できる。FIG. 7 shows a joint portion (
Although a steel sheet pile having an arm between the claw and the flange is illustrated, a general U-shaped sheet pile (without the above-mentioned arm) may be used, and the jig shape may be slightly changed according to the product shape. Thus, the effect of the present invention is the same. Although the figure shows a U-shaped example of the posture of the material to be corrected, the same applies to the inverted U-shaped posture, in which only the jig is turned upside down in accordance with the shape of the material to be corrected. The effects of the present invention can be exhibited.
【００２６】[0026]
【実施例】次に、実施例によって本発明の作用・効果に
ついて具体的に説明する。 (実施例１)本発明にかかるプレス矯正方法を、継手部と
フランジ部の間に腕部を有するＵ型鋼矢板に適用した結
果について、以下に例示する。Next, the operation and effect of the present invention will be described in detail with reference to examples. (Example 1) The result of applying the press straightening method according to the present invention to a U-shaped steel sheet pile having an arm portion between a joint portion and a flange portion will be exemplified below.
【００２７】被矯正材の寸法は、表１に示す通りであ
り、プレス矯正は横型の油圧シリンダを有するプレス機
を用い、支持側の治具間隔 (図３参照) は1.2 ｍであっ
た。矯正方法としては、被矯正材全長に亘る左右曲がり
を除去するために、プレス矯正のたびごとに1.2 ｍピッ
チで被矯正材を間欠的に長手方向に送りながらプレス作
業を繰り返す方法を採った。また、本発明にかかるプレ
ス矯正法に用いた治具としては、図７に示すような２つ
の治具 (治具Ａおよび治具Ｂ) を組み合わせたものを採
用し、比較のために治具Ａだけで左右曲がりを矯正す
る、従来の方法による矯正も併せて行った。The dimensions of the material to be straightened are as shown in Table 1. Press straightening was performed using a press machine having a horizontal hydraulic cylinder, and the jig interval on the support side (see FIG. 3) was 1.2 m. As a straightening method, in order to remove the left-right bending over the entire length of the material to be corrected, a method was employed in which the material to be corrected was intermittently fed in the longitudinal direction at a pitch of 1.2 m each time the press was corrected, and the pressing operation was repeated. As the jig used in the press straightening method according to the present invention, a combination of two jigs (jig A and jig B) as shown in FIG. Correction by a conventional method, which corrects left-right bending only with A, was also performed.
【００２８】表２に、本発明の矯正方法と従来の矯正方
法による矯正後の製品左右曲がりレベルを比較して示
す。本表の結果から判るように、本発明のプレス矯正方
法によれば矯正前後で大幅に曲がりが減少しているのに
対して、従来のプレス矯正方法では矯正前後でほとんど
曲がりレベルは減少せず、逆に製品幅の不良やフランジ
の局部変形による不良が発生している。Table 2 shows a comparison of the level of the product left and right bends after the straightening method according to the present invention and the conventional straightening method. As can be seen from the results of this table, according to the press straightening method of the present invention, the bending is significantly reduced before and after the straightening, whereas the conventional press straightening method hardly reduces the bending level before and after the straightening. On the contrary, a defect due to a defective product width or a local deformation of the flange occurs.
【００２９】[0029]
【表１】 [Table 1]
【００３０】[0030]
【表２】 [Table 2]
【００３１】(実施例２)本発明にかかるプレス矯正方法
を、継手部とフランジ部の間に腕部を有しない一般的Ｕ
型鋼矢板に適用した結果について、以下に例示する。被
矯正材の寸法は、表３に示す通りであり、プレス矯正は
横型の油圧シリンダを有するプレス機を用い、支持側の
治具間隔 (図３参照) は1.2 ｍであった。(Embodiment 2) A press straightening method according to the present invention is applied to a general U-type without an arm between a joint and a flange.
The result of applying the method to a sheet steel sheet pile will be exemplified below. The dimensions of the material to be straightened are as shown in Table 3, and the press straightening was performed using a press machine having a horizontal hydraulic cylinder, and the jig interval on the support side (see FIG. 3) was 1.2 m.
【００３２】矯正方法としては、被矯正材の両端部 (各
々約1.2m) に前工程のローラ矯正で除去しきれなかった
左右曲がりを除去するために、プレス作業を行った。ま
た、本発明にかかるプレス矯正法を実施するのに用いた
治具としては、図７に示すような２つの治具 (治具Ａお
よび治具Ｂ) を組み合わせたものを採用し、比較のため
に治具Ａだけで左右端曲がりを矯正する、従来の方法に
よる矯正も併せて行った。As a straightening method, press work was performed on both ends (about 1.2 m each) of the material to be straightened in order to remove left and right bends that could not be completely removed by the roller straightening in the previous step. Further, as a jig used for carrying out the press straightening method according to the present invention, a combination of two jigs (jig A and jig B) as shown in FIG. For this purpose, the conventional method of correcting the right and left end bending using only the jig A was also performed.
【００３３】表４に、本発明の矯正方法と従来の矯正方
法による矯正後の製品左右曲がりレベルを比較し示す。
本表に示す結果から、本発明のプレス矯正方法によれば
従来のプレス矯正方法に比べて、矯正前後で大幅に端曲
がりが減少しており、かつ短時間で曲がり矯正が実現し
ており、本発明の矯正方法によれば、効率よく曲がり矯
正が可能となることが判る。Table 4 shows a comparison of the level of the product left and right bends after straightening by the straightening method of the present invention and the conventional straightening method.
From the results shown in this table, according to the press straightening method of the present invention, compared to the conventional press straightening method, the end bending is significantly reduced before and after straightening, and the bending straightening is realized in a short time, According to the straightening method of the present invention, it is understood that the straightening can be efficiently performed.
【００３４】[0034]
【表３】 [Table 3]
【００３５】[0035]
【表４】 [Table 4]
【００３６】[0036]
【発明の効果】以上の実施例で明らかなように、本発明
にかかるプレス矯正方法および矯正治具を用いれば、Ｕ
型鋼矢板の矯正が短時間で効率よく可能となり、特に腕
部を有するＵ型鋼矢板のような横方向に曲げ剛性の大き
な断面形状を有する鋼矢板に関しても、製品不良を発生
させることなく効果的にプレス矯正が可能となり、その
産業上の利用価値は極めて大きい。As is clear from the above embodiments, the use of the press straightening method and the straightening jig according to the present invention allows
It is possible to efficiently correct the shape steel sheet pile in a short time and effectively, especially for a steel sheet pile having a cross-sectional shape with large bending rigidity in the lateral direction such as a U-type steel sheet pile having an arm, without causing product defects. Press straightening is possible, and its industrial utility value is extremely large.
【図１】鋼矢板の反り不良の模式的説明図である。FIG. 1 is a schematic explanatory view of a warpage failure of a steel sheet pile.
【図２】鋼矢板板の曲がり不良の模式的説明図である。FIG. 2 is a schematic explanatory view of a bending failure of a steel sheet pile.
【図３】鋼矢板の曲がりプレス矯正方法の概略説明図で
ある。FIG. 3 is a schematic explanatory view of a bending press straightening method for a steel sheet pile.
【図４】図４(a) は鋼矢板のプレス矯正全幅小不良の説
明図、および図４(b) はフランジ局部変形不良の説明図
である。FIG. 4 (a) is an explanatory view of a small defect in the press-straightening full width of a steel sheet pile, and FIG. 4 (b) is an explanatory view of a local deformation defect of a flange.
【図５】本発明のプレス矯正方法の説明図である。FIG. 5 is an explanatory view of a press straightening method of the present invention.
【図６】従来のプレス矯正方法の説明図である。FIG. 6 is an explanatory view of a conventional press straightening method.
【図７】本発明のプレス矯正用治具の一例の説明図であ
る。FIG. 7 is an explanatory diagram of an example of a press straightening jig of the present invention.
【図８】本発明のプレス矯正用治具の別の実施例の説明
図である。FIG. 8 is an explanatory view of another embodiment of the press straightening jig of the present invention.
10：鋼矢板 12、14：フランジ 13：外面 15：内面 20：治具Ａ 22：治具Ｂ 24：連結部分 26：ボルト 28：ねじ穴 30：プレスラムヘッド連結部 10: steel sheet pile 12, 14: flange 13: outer surface 15: inner surface 20: jig A 22: jig B 24: connecting part 26: bolt 28: screw hole 30: press ram head connecting part
Claims (4)
右方向の曲がりをプレスを用いて矯正する方法におい
て、当該鋼矢板の片側フランジの外面を押圧すると同時
に、もう一方のフランジの内面を押圧することを特徴と
するＵ型鋼矢板の矯正方法。In a method for correcting a lateral bending generated in a hot rolling step of a U-type steel sheet pile by using a press, an outer surface of one flange of the steel sheet pile is pressed while an inner surface of the other flange is pressed. A method for correcting a U-shaped steel sheet pile, which comprises pressing.
する面を有する第一治具、さらに当該第一治具と連結さ
れ、もう一方のフランジの内面を押圧する面を有する第
二治具の双方を組み合わせてなることを特徴とするＵ型
鋼矢板の矯正治具。2. A first jig having a surface for pressing an outer surface of a flange on one side of a U-shaped sheet pile, and a second jig connected to the first jig and having a surface for pressing an inner surface of the other flange. A jig for correcting a U-shaped steel sheet pile, characterized by combining both.
面を有する第一治具に対し、フランジの内面を押圧する
第二治具の取付け、取り外しが可能な嵌合部を両治具の
連結部分に設けたことを特徴とする請求項２記載のＵ型
鋼矢板の矯正治具。3. A fitting part capable of attaching and detaching a second jig for pressing an inner surface of a flange to a first jig having a surface for pressing an outer surface of a flange of a U-shaped steel sheet pile. The jig for correcting a U-shaped steel sheet pile according to claim 2, wherein the jig is provided at a connecting portion.
面を有する第一治具に対し、フランジの内面を押圧する
第二治具の製品幅方向の相対位置変更が可能な調整機構
を両治具の連結部分に設けたことを特徴とする請求項２
または３記載のＵ型鋼矢板の矯正治具。4. An adjusting mechanism capable of changing a relative position in a product width direction of a second jig pressing an inner surface of a flange with respect to a first jig having a surface pressing an outer surface of a flange of a U-shaped steel sheet pile. The jig is provided at a connecting portion of the jig.
Or a jig for correcting a U-shaped steel sheet pile according to 3.
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07343566A JP3129179B2 (en) | 1995-12-28 | 1995-12-28 | U-shaped steel sheet pile straightening method and straightening jig |
| EP03002697A EP1338351B1 (en) | 1995-09-29 | 1996-09-18 | Method of correcting U-shaped sheet pile |
| EP96931237A EP0795364B1 (en) | 1995-09-29 | 1996-09-18 | Method of correcting u-shaped steel sheet pile |
| DE69630670T DE69630670T2 (en) | 1995-09-29 | 1996-09-18 | METHOD FOR CORRECTING A U-SHAPED STEEL PILE |
| KR1019970703572A KR100480243B1 (en) | 1995-09-29 | 1996-09-18 | How to Calibrate U-Shaped Steel Plates |
| AU70003/96A AU692404B2 (en) | 1995-09-29 | 1996-09-18 | Method of correcting u-shaped steel sheet pile |
| PCT/JP1996/002680 WO1997012701A1 (en) | 1995-09-29 | 1996-09-18 | Method of correcting u-shaped steel sheet pile |
| DE69638361T DE69638361D1 (en) | 1995-09-29 | 1996-09-18 | Method of correcting U-shaped steel sheet piles |
| CNB011030518A CN1159120C (en) | 1995-09-29 | 1996-09-18 | Method for calibrating U shape steel plate piles |
| CN96191140A CN1073893C (en) | 1995-09-29 | 1996-09-18 | Method of correcting U-shaped steel sheet pile |
| TW085111615A TW346422B (en) | 1995-09-29 | 1996-09-23 | Roller straightening method for U shaped steel sheet pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07343566A JP3129179B2 (en) | 1995-12-28 | 1995-12-28 | U-shaped steel sheet pile straightening method and straightening jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09182916A JPH09182916A (en) | 1997-07-15 |
| JP3129179B2 true JP3129179B2 (en) | 2001-01-29 |
Family
ID=18362522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07343566A Expired - Fee Related JP3129179B2 (en) | 1995-09-29 | 1995-12-28 | U-shaped steel sheet pile straightening method and straightening jig |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3129179B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4687327B2 (en) * | 2005-08-22 | 2011-05-25 | Ｊｆｅスチール株式会社 | Press straightening method for U-shaped steel sheet pile with arms |
| JP7192832B2 (en) * | 2019-06-28 | 2022-12-20 | Ｊｆｅスチール株式会社 | Press straightening device, press straightening method, and steel sheet pile manufacturing method |
-
1995
- 1995-12-28 JP JP07343566A patent/JP3129179B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09182916A (en) | 1997-07-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6318141B1 (en) | Roller leveller | |
| JP4687327B2 (en) | Press straightening method for U-shaped steel sheet pile with arms | |
| KR100480243B1 (en) | How to Calibrate U-Shaped Steel Plates | |
| JP3129179B2 (en) | U-shaped steel sheet pile straightening method and straightening jig | |
| JP5353418B2 (en) | Ram head | |
| KR100480228B1 (en) | Method of correcting u-shaped steel sheet pile | |
| JP4013574B2 (en) | Method and apparatus for correcting bending of section steel | |
| JP3179384B2 (en) | Square pipe bending method and chair using the bent pipe | |
| JP6547706B2 (en) | Straightening method and straightening apparatus for straight steel sheet pile | |
| JPH0235362Y2 (en) | ||
| JP7260858B2 (en) | Steel sheet pile straightening device, straightening method, and steel sheet pile manufacturing method | |
| JPH08174069A (en) | Method for straightening right and left directional bending of wide flange beam | |
| JP2991066B2 (en) | Roller straightening method for H-section steel | |
| KR0185610B1 (en) | Method and apparatus for fillet -welding of built-up rolled steel material for preventing heat distortion | |
| JPS6138714A (en) | Tension leveler | |
| JP3817762B2 (en) | H-shaped steel roller straightening method and apparatus | |
| KR890003070Y1 (en) | Angle bender | |
| JP3744756B2 (en) | Lead frame manufacturing method | |
| JPS60240303A (en) | Production of long-sized section material | |
| CN116689552A (en) | Auxiliary shape correction method for aluminum alloy stringer profile for aerospace | |
| JPH0569004A (en) | Method for spreading width of metallic sheet | |
| JPH07132323A (en) | Flat steel sheet for bending and bending method therefor | |
| JPH0249805B2 (en) | ROORUSEIKEIYONOKYOSEIGU | |
| JP3258499B2 (en) | Board camber straightening method | |
| JPH07195122A (en) | Method for straightening bent roll |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20001017 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071117 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081117 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091117 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091117 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101117 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111117 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121117 Year of fee payment: 12 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131117 Year of fee payment: 13 |
|
| S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313111 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131117 Year of fee payment: 13 |
|
| R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
| LAPS | Cancellation because of no payment of annual fees |