JPS6131405B2 - - Google Patents
Info
- Publication number
- JPS6131405B2 JPS6131405B2 JP15636079A JP15636079A JPS6131405B2 JP S6131405 B2 JPS6131405 B2 JP S6131405B2 JP 15636079 A JP15636079 A JP 15636079A JP 15636079 A JP15636079 A JP 15636079A JP S6131405 B2 JPS6131405 B2 JP S6131405B2
- Authority
- JP
- Japan
- Prior art keywords
- steel material
- amount
- deflection
- vertical bending
- balance
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 31
- 238000005452 bending Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Description
【発明の詳細な説明】
本発明は鋼材の上下曲りを容易易、正確に測定
する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for easily and accurately measuring vertical bending of steel materials.
一般に形鋼の製造工程においては、圧延後のの
精整作業で鋼材の上下曲りを検査し、必要に応じ
てプレス装置によりその矯正がなされることはよ
く知られている。 It is well known that in the manufacturing process of generally shaped steel, the vertical bending of the steel material is inspected during the finishing work after rolling, and if necessary, the bending is corrected using a press machine.
このような鋼材の上下曲りの検出方法として
は、従来たとえばＨ形鋼においては鋼材を転回機
で90゜転回し（即ち工形姿勢に転回し）水糸また
は目視にて上下曲り量を測定する方法や、第１図
イ，ロに示すように、鋼材１の両端部を適当な支
持材２，２ａで支持し、鋼材の両両端間に水糸３
を張つて上下の一方方向でのたわみ量P1＝δ（自
重たわみ量）＋ρ（曲り量）を求めた後、鋼材１
を180゜転回して同じくたわみ量P2＝δ−ρを求
め、これらの値から上下曲り量ρ＝Ｐ−Ｐ２／２を測定
する方法が採られていた。 Conventionally, methods for detecting vertical bending of steel materials include, for example, for H-beam steel, turning the steel material 90 degrees using a turning machine (that is, turning it into a working position) and measuring the amount of vertical bending using a water line or visually. As shown in FIG.
After stretching the steel material 1 and calculating the amount of deflection in one direction (up and down) P 1 = δ (deflection amount due to its own weight) + ρ (amount of bending),
A method was used in which the amount of deflection P 2 =δ−ρ was similarly determined by rotating the plate by 180°, and the amount of vertical bending ρ=P−P 2 /2 was measured from these values.
しかしながら、前者の方法では鋼材を90゜転回
した場合、特に剛性の小さな鋼材にあつては真直
ぐな製品においても蛇行がみられ、上下曲り量の
正確な把握が困難になるという問題がある。また
後者の方法では鋼材１本の上下曲り量を測定する
ために鋼材を180゜転回し、２回測定する必要が
あり精勢作業能率に支障をきたすという問題があ
る。 However, the former method has the problem that when the steel material is turned 90 degrees, meandering is observed even in straight products, especially in the case of steel materials with low rigidity, making it difficult to accurately determine the amount of vertical bending. Furthermore, in the latter method, in order to measure the amount of vertical bending of a single steel material, it is necessary to turn the steel material 180 degrees and measure it twice, which poses a problem in that it impedes the efficiency of the work.
本発明はこのような従来の不利欠点を解決する
ために提案されたものである。即ち、従来では前
記したごとく鋼材の両端部を支持して水平部に対
するたわみ量を測定した場合、上下曲り量と自重
たわみ量の和が計測される。ことになる。そこで
本発明は鋼材を所定の計算式を満足するようにし
て一対の天秤式支持装置にて長さ方向に４点支持
せしめ、更にその式を満たす条件の基に得られる
鋼材の自重たわみ量を予め求めておき、次に上記
支持装置の傾き角度から（上下曲り量）＋（自重た
わみ量）を求め、その値から予め求めておいて自
重たわみ量を差し引いて、鋼材の上下曲り量を算
出しようとするものである。 The present invention has been proposed to solve these conventional disadvantages. That is, conventionally, when the both ends of a steel material are supported and the amount of deflection relative to the horizontal portion is measured as described above, the sum of the amount of vertical bending and the amount of deflection due to its own weight is measured. It turns out. Therefore, in the present invention, the steel material is supported at four points in the length direction by a pair of scale-type support devices so as to satisfy a predetermined calculation formula, and the amount of deflection under the steel material's own weight obtained under the condition that the formula is satisfied is calculated. Calculate the amount of vertical bending of the steel material by calculating it in advance, then calculating (vertical bending amount) + (self-weight deflection amount) from the inclination angle of the support device, and subtracting the self-weight deflection amount obtained in advance from that value. This is what I am trying to do.
次に本発明の具体的実施例につき第２図及び第
３図によつて説明すると、まず第３図は本発明で
使用される天秤式支持装置の一例を示したもので
ある。振れ台７の中央部を支持台４に枢着すると
共に、振れ台７には鋼材の長さ方向にスライド可
能となつた受台５，５を設け、また前記支持台４
には振れ台７の傾き角度を示す振れ角度計６を設
けている。 Next, a specific embodiment of the present invention will be described with reference to FIGS. 2 and 3. First, FIG. 3 shows an example of a scale-type support device used in the present invention. The center part of the swing table 7 is pivotally connected to the support table 4, and the swing table 7 is provided with pedestals 5, 5 that can slide in the length direction of the steel material, and the support table 4
A swing angle meter 6 is provided to indicate the tilt angle of the swing table 7.
このような天秤式支持装置イは第２図に示くご
とく、鋼材１の長さ方向に一対配設され、これに
よつて鋼材１の荷重が受けられるが、この場合、
天秤式支持装置イ，イの外側支点Ａ及び内側支点
Ｂにはそれぞれ等しく荷重が加つて天秤が均等に
つり合うようにすることが必要である。 As shown in Fig. 2, a pair of such scale-type support devices A are arranged in the length direction of the steel material 1, and the load of the steel material 1 can be received by this, but in this case,
It is necessary to apply an equal load to the outer fulcrum A and the inner fulcrum B of the balance type support devices A and B, respectively, so that the balance is balanced evenly.
ここで、天秤式支持装置イ，イが均等につり合
うための条件を第２図を参考にして説明するが、
まず、４点支持のはりのモーメントとつり合い式
は下記，，の一般式であらわされる。 Here, the conditions for evenly balancing the balance type support devices A and B will be explained with reference to Fig. 2.
First, the moment and balance equation for a beam supported at four points are expressed by the following general equation.
３モーメントの式
1MA＋２（１＋２２）ＭB＋２2MB＋
ｗ１ ３／４
＋ｗ（２ＭＢ）３／４＝０ …
つりあい式
ＲB＝ＭＡ−ＭＢ／１＋ｗ１／２＋ｗ・２２／
２…
ＲA＋ＲB＝（２０＋２１＋２２）ｗ／２ …
ここでＭA：支点Ａに作用する曲げモーメント
ＭB支点Ｂに作用する曲げモーメント
ｗ：鋼材の重量
ＲA：支点の反力
ＲB：支点Ｂの反力
，式により
ＲA＝（２０＋１）ｗ／２−ＭＡ−ＭＢ／１
…′
ここで天秤式支持装置の反力ＲA及びＲBが等しく
なるためには式及び′式においてＲA＝ＲBと
おき、下記式の関係が成立する必要がある。3 moment equation 1 M A +2 ( 1 +2 2 ) M B +2 2 M B +
w 1 3 /4 +w (2M B ) 3 /4 = 0 ... Balancing formula R B = M A - M B / 1 +w 1 /2 + w・2 2 /
2... R A + R B = (2 0 + 2 1 + 2 2 )w/2... Here, M A : Bending moment acting on fulcrum A M B Bending moment acting on fulcrum B w: Weight of steel R A : Weight of fulcrum Reaction force R B : Reaction force at fulcrum B, according to the formula, R A = (2 0 + 1 ) w/2 - M A - M B / 1
...' Here, in order for the reaction forces R A and R B of the balance type support device to be equal, it is necessary to set R A = R B in the equations and '', and the relationship of the following equation must be established.
２（ＭＡ−ＭＢ）／１＝（０−２）ｗ
∴ＭA−ＭB＝１（０．２）ｗ／２…
この式を式へ代入することにより、一般式は
′となる。 2(M A - M B )/ 1 = ( 0 - 2 ) w ∴ M A - M B = 1 ( 0.2 ) w/2... By substituting this formula into the formula, the general formula becomes ' .
（３１＋３・２２）ＭA＋１ ３＋（２２）３−４０ １ ２−６０ １・２２＋４１ ２ ２＋１
２１ ２ ２／４ｗ＝０
…′
ここで０のはりのたわみが１及び２のはり
に及ぼす曲げモーメントはＭA＝−１／２ｗ0 2となる
ため、この式を′に代入し、1 3
＋（２２）３−６（１ 0 2＋２２ 0 2＋
０ １・２２
−２１ 2 2）−４（０−２）1 2＝０1 3
＋８2 3−６１ 0 2−12２ 0 2−12０
１ ２＋
12１ 2 2−４０ 12＋４２ 1 2＝０
ただし２（０＋１＋２）＝2L …
この式が上記した天秤式支持装置でＲA＝ＲBと
なるための条件であり、すなわち天秤式支持装置
においてつり合うための条件である。この条件の
もとに、鋼材１のスパンが決まればその自重たわ
み量は即求められる。 (3 1 +3・2 2 ) M A + 1 3 + (2 2 ) 3 −4 0 1 2 −6 0 1・2 2 +4 1 2 2 +1
2 1 2 2 /4w=0
…' Here, the bending moment that the deflection of beam 0 exerts on beams 1 and 2 is M A =-1/2w 0 2 , so substitute this equation for ' and get 1 3 + (2 2 ) 3 - 6 ( 1 0 2 + 2 2 0 2 +
0 1・2 2 -2 1 2 2 ) -4 ( 0 - 2 ) 1 2 =0 1 3 +8 2 3 -6 1 0 2 -12 2 0 2 -12 0
1 2 + 12 1 2 2 -4 0 12 + 4 2 1 2 = 0 However, 2 ( 0 + 1 + 2 ) = 2L... This formula is the condition for R A = R B in the above-mentioned balance type support device. In other words, it is a condition for balance in a balance type support device. Under these conditions, if the span of the steel material 1 is determined, the amount of deflection under its own weight can be immediately determined.
本発明ではこの式を満足するように天秤式支
持装置イ，イで鋼材１を支持すると共に、この
式を満たす条件の基に得られる鋼材１の自重たわ
み量を予め求めておき、その天秤式支持装置イ，
イの振り角度計６に表示された振り台７の傾き角
度αを測定することにより上下曲り測定値（ρ）
（上下曲り量＋自重たわみ量）をρ＝Lsinαの式
から算出し、そこから予め求めておいた自重たわ
み量を差し引いて、鋼材１の上下曲り量を求める
ものである。 In the present invention, the steel material 1 is supported by the balance type supporting devices A and A so as to satisfy this formula, and the amount of deflection due to the weight of the steel material 1 obtained under the conditions that satisfy this formula is determined in advance, and the balance type Support device a,
The vertical bending measurement value (ρ) is obtained by measuring the tilt angle α of the swinging table 7 displayed on the swinging angle meter 6.
The amount of vertical bending of the steel material 1 is determined by calculating (vertical bending amount + self-weight deflection amount) from the formula ρ = L sin α, and subtracting the self-weight deflection amount determined in advance from there.
以上のような本発明によれば、鋼材を上記した
式を満足せしめるように、一対の天秤式支持装
置で支持し、その装置の傾斜角を測定するだけで
従来のように鋼材を転回させることなく、容易か
つ正確に上下曲り量を測定することができ、精整
作業能率が向上する等種々のすぐれた効果が得ら
れるものである。 According to the present invention as described above, the steel material can be supported by a pair of scale-type support devices so as to satisfy the above-mentioned formula, and the steel material can be rotated as in the conventional method simply by measuring the inclination angle of the devices. The amount of vertical bending can be easily and accurately measured without any problems, and various excellent effects can be obtained, such as improving the efficiency of finishing work.
第１図イ，ロは従来の上下曲り測定方法の説明
図、第２図は本発明による上下曲り測定方法の説
明図、第３図は本発明で使用される天秤式支持装
置の概略図である。
図中において、１は鋼材、２，２ａは支持材、
３は水糸、４は支持台、５は受台、６は振れ角度
計、７は振れ台である。
Figures 1A and 2B are explanatory diagrams of a conventional vertical bending measuring method, Figure 2 is an explanatory diagram of a vertical bending measuring method according to the present invention, and Figure 3 is a schematic diagram of a balance type support device used in the present invention. be. In the figure, 1 is a steel material, 2 and 2a are supporting materials,
3 is a water line, 4 is a support stand, 5 is a pedestal, 6 is a swing angle meter, and 7 is a swing stand.
Claims (1)
鋼材を下式を満足するように一対の天秤式支持装
置にて長さ方向に４点支持せしめると共に、下式
を満たす条件の基に得られる鋼材の自重たわみ量
を求め、次にその支持装置の傾き角度（α）から
（上下たわみ量）＋（自重たわみ量）＝Lsinαを測
定し、その値から予め求めておいた自重たわみ量
を差し引いて鋼材の上下曲り量を算出することを
特徴とする鋼材の上下曲り測定方法。 1 3＋８2 3−６１ 0 2−12２ 0 2 −12０ １ ２＋12１ 2 2−４０ 1 2 ＋４２ 1 2＝０ ただし２（０＋１＋２）＝2L ここで０
：鋼材端部から天秤の外側支点迄の長さ １：天秤の支点間の長さ ２
：天秤と天秤の内側支点間のさの1/2 Ｌ：鋼材長さの1/2[Scope of Claims] 1. When measuring the amount of vertical bending of a steel material, the steel material is supported at four points in the length direction using a pair of scale support devices so as to satisfy the following formula, and the following conditions are satisfied: Determine the amount of dead weight deflection of the steel material obtained based on , then measure (vertical deflection amount) + (self weight deflection amount) = Lsinα from the inclination angle (α) of the support device, and calculate it in advance from that value. A method for measuring vertical bending of a steel material, characterized in that the amount of vertical bending of the steel material is calculated by subtracting the amount of deflection due to its own weight. 1 3 +8 2 3 -6 1 0 2 -12 2 0 2 -12 0 1 2 +12 1 2 2 -4 0 1 2 +4 2 1 2 = 0 However, 2 ( 0 + 1 + 2 ) = 2L where 0
: Length from the end of the steel material to the outer fulcrum of the balance 1 : Length between the fulcrums of the balance 2
: 1/2 of the length between the balance and the inner fulcrum of the balance L: 1/2 of the length of the steel material
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15636079A JPS5679906A (en) | 1979-12-04 | 1979-12-04 | Measuring method for up-down curvature of steel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15636079A JPS5679906A (en) | 1979-12-04 | 1979-12-04 | Measuring method for up-down curvature of steel material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5679906A JPS5679906A (en) | 1981-06-30 |
| JPS6131405B2 true JPS6131405B2 (en) | 1986-07-19 |
Family
ID=15626049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15636079A Granted JPS5679906A (en) | 1979-12-04 | 1979-12-04 | Measuring method for up-down curvature of steel material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5679906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63166206U (en) * | 1987-04-21 | 1988-10-28 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58180905A (en) * | 1982-04-16 | 1983-10-22 | Nippon Kokan Kk <Nkk> | Method and apparatus for measuring bend of shape steel |
| JPS59134008U (en) * | 1983-02-24 | 1984-09-07 | 株式会社東芝 | Loop detector |
-
1979
- 1979-12-04 JP JP15636079A patent/JPS5679906A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63166206U (en) * | 1987-04-21 | 1988-10-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5679906A (en) | 1981-06-30 |
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