JP5900438B2 - H-shaped steel bend straightening device - Google Patents

Description

  The present invention relates to an H-shaped steel bend correction device that corrects a longitudinal bending of an H-section steel generated in a rolling process in a refining line of a shape steel factory by cold rolling using a rolling roll.

The bending of the H-section steel generated in the rolling process is corrected by cold rolling with a rolling roll in a bending correction device arranged offline.
The posture of the H-section steel conveyed to the bending straightening device is an H posture in which the conveyance state is stable (as shown in FIG. 13, the web 1 a extends horizontally, and a pair of flanges 1 b 1 on the left and right of the web 1 a. , 1b2 is the posture of the H-section steel 1). As shown in FIG. 14, the H-section steel 1 conveyed from the rolling process in this H posture is bent in the longitudinal direction (FIG. 14 is a right-hand bend with the right flange 1b2 as the inner side, but the left flange 1b1 is set inward. As well as left-hand bends).

For example, a device disclosed in Patent Document 1 is known as a bending correction device that corrects the bending in the longitudinal direction of the H-shaped steel 1 in the H posture.
As shown in FIG. 15, the bending straightening device of Patent Document 1 includes an inner rolling roll 3 that reduces the inner surface of the left flange 1b1 of the H-section steel 1, an outer rolling roll 4 that reduces the outer surface of the left flange 1b1, An intermediate frame 5 that supports the inner rolling roll 3 and the outer rolling roll 4, and a hydraulic cylinder 7 that is disposed between the right frame portion of the intermediate frame 5 and the apparatus main body 6 and supports the intermediate frame 5. . A pair of the inner rolling rolls 3 is arranged on the upper and lower sides of the web 1 a of the H-section steel 1, and is rotatably fixed to the right frame portion of the middle frame 5. The outer rolling roll 4 is supported on the left frame portion of the middle frame 5 via a hydraulic cylinder 8 so as to be rotatable and movable in the left-right direction. The hydraulic cylinders 7 and 8 communicate with each other through a hydraulic pipe 9.

When correcting the left bend of the H-section steel 1 curved with the left flange 1b1 as the inside, the oil in the hydraulic cylinder 7 is compressed to a predetermined high pressure, and at the same time, the hydraulic cylinder 7 and the hydraulic cylinder 8 are connected to the hydraulic pipe. 9, the left flange 1b1 is cold-rolled between the inner rolling roll 3 and the outer rolling roll 4 to correct the left turn.
Further, in the case of correcting the right bend of the H-section steel 1 curved with the right flange 1b2 as the inner side, the H-section steel 1 is continuously arranged in the conveying direction of the H-section steel 1 with the apparatus of FIG. The right bending of the H-section steel 1 is corrected by cold-rolling the right flange 1b2 between the inner rolling roll 3 and the outer rolling roll 4 by a straightening device (not shown) for turning the right and left. The

Japanese Patent Laid-Open No. 2002-282934

Since the inner rolling roll 3 and the outer rolling roll 4 of the bending straightening device in FIG. 15 wear with the progress of the straightening work, the roll recombination work is performed at a predetermined replacement period.
15 corrects the H-section steel 1 in the H posture, the inner rolling roll 3 and the outer rolling roll 4 are arranged with their shafts extending in the vertical direction.
These roll recombination is carried out in such a manner that the inner rolling roll 3 and the outer rolling roll 4 are fixed at fixed positions inside the apparatus main body 6 and the inner rolling rolls are opened from the openings provided above and below the middle frame 5. 3 and a support device having a built-in bearing for supporting the outer rolling roll 4 must be taken in and out, and a lot of work is required for roll recombination. Is the current situation.

In addition, it is necessary to secure a work space capable of roll recombination in the upper part of the middle frame 5 inside the device main body 6, and the device main body 6 provided with the work space becomes large. There is a problem.
Therefore, the present invention has been made paying attention to the above-mentioned unsolved problems of the conventional example, and recombining the inner rolling roll, the outer rolling roll, and the supporting device for rotatably supporting them while having a compact device configuration. An object of the present invention is to provide an apparatus for correcting the bending of an H-shaped steel that can be easily performed.

  In order to achieve the above object, an H-shaped steel bend correction device according to one embodiment has a web extending in the left-right direction orthogonal to the conveying direction, and left and right flanges extending vertically from the left and right ends of the web. Is an apparatus that corrects the longitudinal bending of the H-shaped steel that extends, and is installed on the floor with an outer rolling roll that squeezes one outer surface of the left and right flanges, and the rotating shaft extends in the vertical direction. As described above, the outer rolling roll housing that supports the outer rolling roll through the bearing, the inner rolling roll that compresses one inner surface of the left and right flanges, and the bearing through the bearing so that the rotating shaft extends in the vertical direction. An inner rolling roll housing that supports an inner rolling roll; a raceway having one end provided on an upper portion of the outer rolling roll housing and the other end extending in the left-right direction; and A suspension support section for supporting suspension, and a moving means for moving the inner rolling roll housing along the track from a position along the outer rolling roll housing to a position spaced from the outer rolling roll housing, and Coupling means for detachably coupling the inner rolling roll housing moved to a position along the outer rolling roll housing to the outer rolling roll housing.

  Moreover, the bending correction apparatus of the H-section steel which concerns on one Embodiment is the said inner rolling roll to the position where the said coupling means provided the outer rolling side convex part provided in the said outer rolling roll housing, and the said outer rolling roll housing. When the housing is moved, the inner rolling side convex portion provided in the inner rolling roll housing is superposed on the outer rolling side convex portion from the vertical direction, and the outer rolling side convex portion and the inner rolling side convex portion are vertically arranged. Through holes provided in communication, a cotter that joins the outer rolling side convex part and the inner rolling side convex part by being inserted into these through holes, and a cotter that raises and lowers the cotter and puts it in and out of the through hole. And an elevating mechanism.

Moreover, the bending correction apparatus of the H-section steel which concerns on one Embodiment is provided in the predetermined position of the said outer rolling roll housing in which the said outer rolling side convex part was spaced apart from the position which replaces | exchanges the said outer rolling roll. In addition, the inner rolling side convex portion is provided at a predetermined position of the inner rolling roll housing which is separated from a position where the inner rolling roll is exchanged.
Moreover, the bending correction apparatus of the H-section steel which concerns on one Embodiment is the said inner rolling roll housing to the position where the said coupling | bonding means provided the cotter engaging part provided in the said inner rolling roll housing, and the said outer rolling roll housing. And a cotter lifting device that engages the cotter engaging portion with the cotter engaging portion and detachably couples the inner rolling roll housing to the outer rolling roll housing.

Moreover, the bending correction apparatus of the H-section steel which concerns on one Embodiment is as follows. The said cotter raising / lowering apparatus is a feed screw axis | shaft extended in the direction where the said cotter raises / lowers, and rotation to a forward / reverse direction to this feed screw axis A rotation transmitting means for transmitting the rotation, a non-rotatable nut member screwed to the outer periphery of the feed screw shaft, and the cotter connected to the nut member and moving in parallel along the feed screw shaft. ing.
Further, in the H-shaped steel bending correction apparatus according to one embodiment, the moving means functions as the suspension support portion for supporting the inner rolling roll housing on the track, and the outer rolling roll housing. Is a self-propelled means that self-propells on the track from a position along the line to a position separated from the outer rolling roll housing.

According to the bend straightening device for H-section steel according to the present invention, when exchanging the inner rolling roll and the outer rolling roll, the coupling means for coupling the inner rolling roll housing and the outer rolling roll housing is released, Since the rolling roll housing can be moved to a position separated from the outer rolling roll housing, the roll recombination work can be easily performed while ensuring a wide working space.
Further, the inner rolling roll housing according to the present invention moves to a position along the outer rolling roll housing or a position spaced apart from the outer rolling roll housing in a state where the inner rolling roll housing is supported in a suspended state, and moves the inner rolling roll housing to the floor. Therefore, the installation work cost can be reduced.

It is the figure which showed the bending correction apparatus of the H-section steel of 1st Embodiment which concerns on this invention by planar view. It is a figure which shows the coupling | bonding structure of the inner rolling roll housing and the outer rolling roll housing of the bending correction apparatus of the H-section steel of 1st Embodiment which concerns on this invention. It is an AA arrow directional view of FIG. It is a figure which shows the structure of the upper inner rolling roll reduction | decrease mechanism of 1st Embodiment which concerns on this invention, the lower inner rolling roll reduction | decrease mechanism, and the left rolling roll. It is a perspective view which shows the specific structure of the inner rolling roll housing of 1st Embodiment which concerns on this invention, an outer rolling roll housing, and a housing suspension support part. It is a figure which shows the state which isolate | separated the inner rolling roll housing and outer rolling roll housing of 1st Embodiment which concern on this invention in the left-right direction. It is CC line arrow directional view of FIG. It is a perspective view which shows the specific structure of the inner rolling roll housing, the outer rolling roll housing, and the housing suspension support part of the bending correction apparatus of the H-section steel of 2nd Embodiment which concerns on this invention. It is a figure which shows the structure of the coupling | bonding means provided in the outer rolling roll housing of 2nd Embodiment which concerns on this invention. It is a figure which shows the state which the inner rolling roll housing and outer rolling roll housing of 2nd Embodiment which concern on this invention have couple | bonded. It is a figure which shows the coupling | bonding operation | movement of the coupling | bonding means of 2nd Embodiment concerning this invention. It is a figure which shows the state which the inner rolling roll housing and outer rolling roll housing of 2nd Embodiment which concern on this invention isolate | separated to the left-right direction. It is a figure which shows the shape of H-section steel. It is a figure which shows the bending of the longitudinal direction of H-section steel. It is a top view which shows the bending correction apparatus of the conventional H-section steel.

DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail with reference to the drawings.
FIG. 1 shows a bend straightening device 10 for straightening a left turn in the longitudinal direction of an H-section steel 1 arranged off-line. When the H-section steel 1 conveyed in the H posture passes through the correction device 10, the left turn is corrected. The H posture of the H-section steel 1 is a posture in which the web 1a extends horizontally and the pair of flanges 1b1 and 1b2 are positioned on the left and right of the web 1a as shown in FIG.

FIG. 2 is a front view of the bending straightening device 10 according to the first embodiment of the present invention as viewed from the conveying direction of the H-section steel 1, and FIG. 3 is a view taken along the line AA in FIG.
As shown in FIG. 2, the bending straightening device 10 of this embodiment includes an outer rolling roll housing 12 installed on a floor 11, an inner rolling roll housing 13 disposed inside the outer rolling roll housing 12, and outer rolling. A suspension rail 32 extending in the horizontal direction perpendicular to the conveying direction of the H-section steel 1 from the upper portion of the roll housing 12, a housing suspension support portion 14 for supporting the inner rolling roll housing 13 by suspension, and suspension The supported inner rolling roll housing 13 is arranged inside the outer rolling roll housing 12, or the inner rolling roll housing 13 is separated from the outer rolling roll housing 12 and is orthogonal to the conveying direction of the H-section steel 1 (see FIG. 2 left and right direction) and the inner rolling roll housing disposed inside the outer rolling roll housing 12. 13 and housing coupling portion 16 for coupling to the outer rolling roll housing 12, and a.

As shown in FIGS. 2 and 3, the outer rolling roll housing 12 includes a pair of outer rolling housing plates 12 a and 12 b arranged in parallel to each other, and the pair of outer rolling housing plates 12 a and 12 b has an H posture. A window 12c through which the H-section steel 1 passes is formed.
Between the pair of outer rolling housing plates 12a and 12b, a left outer rolling roll 21 having a rotating shaft extending in the vertical direction, an outer rolling roll support portion 22 that rotatably supports the left outer rolling roll 21, and A power transmission shaft 23 for transmitting a rotational driving force from a rotational power source (not shown) to the left outer rolling roll 21 is disposed, and as shown in FIG. 4, the left outer rolling roll 21 passes through the window 12c. It can come into contact with the outer surface of the left flange 1b1 of the structural steel 1.

And the space (right space of FIG. 3) 12d adjacent to the left outer rolling roll 21 between the pair of outer rolling housing plates 12a, 12b is defined as a housing arrangement space in which the inner rolling roll housing 13 is arranged (hereinafter, referred to as “space”). (Referred to as housing arrangement space 12d).
As shown in FIGS. 2 and 3, the inner rolling roll housing 13 includes a pair of inner rolling housing plates 13 a and 13 b arranged in parallel to each other. A notch 13c is formed opposite the window 12c of the outer rolled housing plates 12a and 12b.

Between the pair of inner rolling housing plates 13a and 13b, the upper inner rolling roll 25, the upper roll supporting portion 26, the lower inner rolling roll 27, the lower roll supporting portion 28, the upper inner rolling roll reduction mechanism 29, and the lower inner rolling roll A rolling roll reduction mechanism 30 is disposed.
As shown in FIG. 4, the upper roll support portion 26 supports the upper inner rolling roll 25 via a bearing (not shown) so that the rotation shaft extends in the vertical direction. The abutting against the inner surface of the left flange 1b1 above the web 1a of the H-section steel 1 is possible.

Further, as shown in FIG. 4, the lower roll support portion 28 supports the lower inner rolling roll 27 via a bearing so that the rotation shaft extends in the vertical direction. It can come into contact with the inner surface of the left flange 1b1 below the web 1a of the section steel 1.
As shown in FIG. 4, the upper inner rolling roll reduction mechanism 29 causes the upper inner rolling roll 25 supported by the upper roll support portion 26 to extend as the piston rod of the reduction cylinder extends toward the upper roll support portion 26. The left flange 1b1 above the web 1a of the H-section steel 1 is pressed down from the inner surface toward the outer surface.

As shown in FIG. 4, the lower inner rolling roll reduction mechanism 30 has the lower inner rolling roll 27 supported by the lower roll support portion 28 by the piston rod of the reduction cylinder extending toward the lower roll support portion 28. The web 1a of the H-section steel 1 is pressed down from the inner surface of the left flange 1b1 below the outer surface.
As shown in FIGS. 2 and 5, a pair of beams 31a and 31b are installed in a horizontal direction (left and right direction in FIG. 2) orthogonal to the conveying direction of the H-section steel 1, and the pair of beams 31a and 31b are mounted on the pair of beams 31a and 31b. A suspension rail 32 is laid. The pair of beams 31a and 31b are stretched between the upper portions of the pair of outer rolled housing plates 12a and 12b and the support column 34.

As shown in FIGS. 2 and 5, the housing suspension support portion 14 is provided on the upper part of the pair of inner rolling housing plates 13 a and 13 b of the inner rolling roll housing 13 and rolls on the suspension rail 32. A portion 33 is provided.
The rolling part 33 includes a wheel 35 that rolls on the suspension rail 32, and a leg support part 37 that is fixed to the side surfaces of the inner rolling housing plates 13 a and 13 b that support the legs 36 of the wheel 35. The rolling portion 33 of the present embodiment is a linear motion mechanism in which the leg 36 moves in the vertical direction with respect to the leg support portion 37 by transmitting a rotational force to the leg 36 that is a rotating shaft. A servo motor 38 for transmitting a rotational force to the leg 36 is provided.

Further, when the servo motors 38 of all the rolling portions 33 are rotated forward, the legs 36 of the linear motion mechanism move downward with respect to the leg support portions 37 so that the inner rolling roll housing 13 rises, When the servo motor 38 of the rolling part 33 rotates in the reverse direction, the leg 36 of the linear motion mechanism moves upward with respect to the leg support part 37 so that the inner rolling roll housing 13 is lowered.
Further, as shown in FIGS. 2 and 3, the housing moving portion 15 transmits a driving rod 15a having one end connected to the connecting portion 13d of the inner rolling roll housing 13, and an axial driving force to the driving rod 15a. And a linear motion actuator 15b.

  When the linear actuator 15b transmits the driving force toward the left in FIG. 2 to the drive rod 15a, the wheel 35 of the rolling part 33 of the housing suspension support part 14 moves on the suspension rail 32 to the left. The inner rolling roll housing 13 that is rolled and supported by suspension is arranged in the housing arrangement space 12d of the outer rolling roll housing 12 (see FIG. 3). Further, when the linear motion actuator 15b transmits a driving force toward the right in FIG. 2 to the drive rod 15a, the wheel 35 of the rolling portion 33 of the housing suspension support portion 14 moves rightward on the suspension rail 32. The inner rolling roll housing 13 that is rolled and supported in a suspended manner moves in a direction away from the outer rolling roll housing 12 (see FIG. 7).

  Further, as shown in FIGS. 2 and 5, the housing coupling portion 16 is vertically separated from the side portion of the outer rolled housing plates 12 a and 12 b that is separated from the left outer rolling roll 21 (housing arrangement space 12 d side). When the outer rolling side first convex portion to the third convex portion 40a to 40c and the inner rolling roll housing 13 are arranged in the housing arrangement space 12d of the outer rolling roll housing 12, the outer rolling side first to first convex portions are provided. Inner rolling side first convex portions 1 and second convex portions 41a and 40b provided on the inner rolling housings 13a and 13b that are superposed on the three convex portions 40a to 40c in the vertical direction, and the outer rolling side first to third convex portions 40a to 40c. 40c, through-holes 42a to 42e formed in the first and second convex portions 41a and 40b on the inner rolling side, and a cotter 43 inserted into the through-holes 42a to 42e.

  As shown in FIG. 2, the lower end of the cotter 43 is connected to a cotter lifting mechanism 44 arranged in the outer rolling roll housing 12. The cotter elevating mechanism 44 includes a linear motion mechanism 44a that linearly moves when a rotational force is transmitted, and a servo motor 44b that transmits the rotational force to the linear motion mechanism 44a.

Then, when the linear motion mechanism 44a moves upward by the forward rotation of the servo motor 44b, the cotter 43 moves upward, and the outer rolling side first convex portion 1 to the third convex portion 3 of the outer rolling roll housing 12 superposed in the vertical direction. The inner rolling roll housing 12 and the outer rolling roll housing 13 are joined by being inserted into the through holes 42a to 42e of the inner rolling side first and second convex portions 41a and 40b of the convex portions 40a to 40c and the inner rolling roll housing 13.
Further, when the linear motion mechanism 44a moves downward due to the reverse rotation of the servo motor 44b, the cotter 43 moves downward, and through holes 42d of the inner rolling side first and second convex portions 41a, 40b of the inner rolling roll housing 13 are provided. 2e, the inner rolling roll housing 12 and the outer rolling roll housing 13 are separable.

Here, in the conveying direction of the H-section steel 1, a straightening device that corrects the rightward bending in the longitudinal direction of the H-section steel 1 is arranged continuously with the straightening device 10, and this device is configured as the straightening device 10. It is a device in which the members are reversed left and right.
The inner rolling roll according to the present invention corresponds to the upper inner rolling roll 25 and the lower inner rolling roll 27, the track according to the present invention corresponds to the suspension rail 32, and the suspension support according to the present invention is the housing suspension. Corresponding to the lowering support portion 14, the moving means according to the present invention corresponds to the housing moving portion 15, the connecting means according to the present invention corresponds to the housing connecting portion 16, and the outer rolling side convex portion according to the present invention is the outer rolling. Corresponding to the first convex portion to the outer rolled third convex portion 40a to 40c, the inner rolled side convex portion according to the present invention corresponds to the inner rolled first convex portion 41a and the inner rolled second convex portion 41b.

  In the bending straightening device 10 of the present embodiment, the upper rolling mill 25 and the lower inner rolling roll 27 are moved by the inner rolling roll housing 13 being lifted or lowered by the forward and reverse rotating operations of the servo motor 38 of the rolling portion 33. The upper inner rolling roll 25 and the lower inner rolling roll 27 are moved from the inner surface of the left flange 1b1 of the H-section steel 1 to the outer surface by the operation of the upper inner rolling roll reduction mechanism 29 and the lower inner rolling roll reduction mechanism 30. 1 and the left outer rolling roll 21 to which the rotational force is transmitted from the rotational power source (not shown) via the power transmission shaft 23 conveys the H-section steel 1 (of the H-section steel 1 in FIG. 1). Arrow direction), the upper inner rolling roll 25 and the lower inner rolling roll 27 reduce the inner surface of the left flange 1b1 and roll the left flange 1b1 with the left outer rolling roll 21. And it allows to correct the longitudinal direction of the left bend of H-beams 1.

  Moreover, the apparatus (not shown) which is arrange | positioned continuously by the straightening apparatus 10 in the conveyance direction of the H-section steel 1, and correct | amends the right direction bending of the longitudinal direction of the H-section steel 1 has an upper inner rolling roll and a lower inner rolling roll. The right flange 1b2 is rolled down, the right outer rolling roll rolls the right flange 1b2 by conveying the H-section steel 1 while supporting the outer surface of the right flange 1b2, and the longitudinal direction of the H-section steel 1 Correct the right turn. That is, the above-described bending correction device 10 and a bending correction device that is symmetric with respect to the bending correction device 10 are disposed on the downstream side in the transport direction of the bending correction device 10 or on the upstream side in the transport direction.

  Here, when the bending straightening device 10 of this embodiment corrects the bending of the H-section steel 1, the inner rolling roll housing 13 supporting the upper inner rolling roll 25 and the lower inner rolling roll 27, and the left outer A correction reaction force acts on the outer rolling roll housing 12 supporting the rolling roll 21 in the left-right direction opposite to the direction in which the H-section steel 1 is rolled down. The inner rolling roll housing 13 and the outer rolling roll housing 12 in which the reverse reaction forces in the opposite directions (left and right directions) act on each other are joined together by the housing coupling portion 16 using the cotter 43 without causing any backlash in the left and right directions. Therefore, the correction reaction force when correcting the bending of the H-section steel 1 can be reliably received.

Next, in the bending straightening device 10 of the present embodiment, a procedure for rearranging the upper inner rolling roll 25, the lower inner rolling roll 27, and the left outer rolling roll 21 that have been worn by the progress of the straightening work into new rolls will be described with reference to FIG. This will be described with reference to FIGS.
First, in FIG. 2, the linear motion mechanism 44a is moved downward by rotating the servo motor 44b of the cotter lifting mechanism 44 in the reverse direction. As a result, the cotter 43 connected to the linear motion mechanism 44a is brought out of the through holes 42d and 42e of the inner rolling side first convex portion 41a and the second convex portion 41b of the inner rolling roll housing 13. Thereby, the inner rolling roll housing 13 and the outer rolling roll housing 12 can be separated in the left-right direction.

Next, the linear actuator 15b of the housing moving unit 15 is driven so that the drive rod 15a moves to the right. Thereby, the wheel 35 of the rolling part 33 of the housing suspension support part 14 rolls right on the suspension rail 32, and the inner rolling roll housing 13 supported by suspension is as shown in FIG. It moves in a direction away from the outer rolling roll housing 12.
And as shown in FIG. 7, the inner rolling roll housing 13 separated from the outer rolling roll housing 12 includes an upper inner rolling roll 25, a lower inner rolling roll 27, an upper roll support portion 26, and The lower roll support portion 28 is recombined at the position on the left side of FIG.

Further, the outer rolling roll housing 12 is recombined by removing the connection with the power transmission shaft 23 in a state where it is suspended and held by a crane (not shown) at the position on the left side of FIG.
Therefore, in the bending straightening device 10 of the present embodiment, the upper inner rolling roll 25 and the lower inner rolling roll 27 having a small roll diameter are worn quickly by the straightening work and have a short roll replacement cycle, but are supported by being suspended. The roll recombination work can be easily performed while the housing 13 is easily moved to a position separated from the outer rolling roll housing 12 to ensure a wide work space.
Further, the outer rolling roll housing 12 is also lifted and moved by a crane from the direction opposite to the moving direction of the inner rolling roll housing 13 (left side in FIG. 6), so that roll recombination work can be easily performed while securing a wide working space. Can do.

  The inner rolling roll housing 13 includes an upper inner rolling roll 25, an upper roll support portion 26, a lower inner rolling roll 27, a lower roll support portion 28, an upper inner rolling roll reduction mechanism 29, and a lower inner rolling roll reduction mechanism 30. Therefore, it is a heavy equipment, and if this heavy equipment is moved on a track installed on the floor, a large foundation work is required. However, in this embodiment, the inner rolling roll housing 13 is suspended and supported by the hanging rails 32 on the beams 31a and 31b installed in the horizontal direction perpendicular to the conveying direction of the H-section steel 1 from the outer rolling roll housing 12. Since it is configured to move in a state where it does not require large-scale floor foundation work, installation work costs can be reduced.

  Moreover, as shown in FIG. 7, the outer rolling side first convex portion 40a (the outer rolling side second convex portion 40b, the outer rolling side third convex portion 40c of the outer rolling roll housing 12 constituting the housing coupling portion 16 is the same. ) Is provided on the side of the outer rolling housing plates 12a and 12b sufficiently separated from the left outer rolling roll 21, which does not interfere with the replacement work position of the left outer rolling roll 21 (left side in FIG. 7). The replacement work of the left outer rolling roll 21 can be easily performed.

  Furthermore, as shown in FIG. 7, the inner rolling side first convex portion 41 a (same as the inner rolling side second convex portion 41 b) of the inner rolling roll housing 13 constituting the housing coupling portion 16 is also formed in the upper roll supporting portion 26, A position apart from the position where the upper inner rolling roll 25 and the lower inner rolling roll 28 are replaced, that is, the inner rolling housing so as not to obstruct the replacement work position (left side in FIG. 7) of the lower inner rolling roll 27 and the like. Since it is provided on the right side of the plates 13a and 13b, the replacement work of the upper roll support 26, the lower inner rolling roll 27, etc. can be easily performed.

Next, FIGS. 8 to 12 show a bending correction device 50 according to a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same component as the structure shown in FIGS. 1-7, and the description is abbreviate | omitted.
As shown in FIG. 8, the bending straightening device 50 of the present embodiment includes an outer rolling roll housing 12, an inner rolling roll housing 51 disposed inside the outer rolling roll housing 12, and an upper portion of the outer rolling roll housing 12. To the horizontal direction perpendicular to the conveying direction of the H-section steel 1, the suspension rail 32 that suspends and supports the inner rolling roll housing 13, and the inner rolling roll housing 51 that is suspended and supported by the outer rolling roll housing 12. Of the inner rolling roll housing 51 is separated from the outer rolling roll housing 12 and moved in a horizontal direction orthogonal to the conveying direction of the H-section steel 1, and the outer rolling roll housing 12. A housing coupling portion 53 for coupling the inner rolling roll housing 51 disposed inside to the outer rolling roll housing 12; It is provided.

The housing self-running portion 52 includes a plurality of wheels 52 a that are connected to the upper portions of the pair of inner rolling housing plates 13 a and 13 b that are arranged in parallel to each other on the inner rolling roll housing 51 and roll on the suspension rail 32. In this device, the rotational driving force is transmitted to a plurality of wheels 52a from a rotational driving source (not shown).
When the housing self-running portion 52 self-propels on the suspension rail 32 toward the left in FIG. 8, the inner rolling roll housing 51 moves together with the housing self-running portion 52 and the housing arrangement space of the outer rolling roll housing 12 is moved. 12d (see FIG. 10). Further, when the housing self-running portion 52 is self-propelled on the suspension rail 32 toward the right in FIG. 8, the inner rolling roll housing 51 is separated from the outer rolling roll housing 12 together with the housing self-running portion 52. Move (see FIG. 12).

The housing coupling portion 53 includes a cotter lifting device 54 provided on the side of the outer rolled housing plates 12a and 12b on the side separated from the left outer rolling roll 21 (housing arrangement space 12d side), the inner rolled housing plates 13a, A cotter engagement portion 55 having a square bar shape that is connected to the side portions of the 13b where the notch portion 13c is not provided and extends in the horizontal direction. Both end portions 55a of the cotter engagement portion 55 are The outer rolling housing plates 13a and 13b protrude outward from the outer surface.
The cotter lifting / lowering apparatus 54 of this embodiment is demonstrated with reference to Fig.9 (a), (b). FIG. 9A shows the cotter lifting device 54 from the direction along the conveying direction of the H-section steel 1, and FIG. 9B shows the inner rolling roll housing 51 with respect to the outer rolling roll housing 12. The cotter elevating device 54 is shown from the direction of taking in and out.

  The cotter lifting / lowering device 54 includes a device case 56, a feed screw shaft 58 whose axis extends in the vertical direction and is rotatably supported by the device case 56 via bearings 57a to 57c, and an upper portion of the feed screw shaft 58. And a worm gear 61 that is directly connected to the drive shaft of the drive motor 60 and meshes with the rotational force transmission gear 59, and an outer periphery below the feed screw shaft 58 that cannot be rotated. A nut member 62 screwed into the nut member 62, a cotter connecting portion 63 projecting from the outer periphery of the nut member 62 in a direction perpendicular to the axis of the feed screw shaft 58, and a feed screw shaft with its upper end being connected to the cotter connecting portion 63 58, and a cotter 64 arranged in parallel with 58. And the side surface which faces the left outer rolling roll 21 of the cotter 64 is formed as the taper surface 64a.

  Further, as shown in FIGS. 8 and 9B, a recess 65 is formed inside the apparatus case 56, and the inner rolling roll housing 51 is arranged in the housing arrangement space 12 d of the outer rolling roll housing 12. Sometimes, both end portions 55a of the cotter engagement portion 55 pass through the recess 65 and are positioned inside the device case 56.

  Next, FIG. 10 and FIGS. 11A and 11B show the coupled state of the inner rolling roll housing 51 and the outer rolling roll housing 12. In the coupled state of the inner rolling roll housing 51 and the outer rolling roll housing 12, both end portions 55 a of the cotter engaging portion 55 are located inside the apparatus case 56. The forward rotation of the drive motor 60 is transmitted to the worm gear 61 and the rotational force transmission gear 59, and the rotational force transmission gear 59 is transmitted to the feed screw shaft, so that the non-rotatable nut member 62 moves upward. Go. The tapered surface 64a of the cotter 64 that moves along with the upward movement of the nut member 62 is engaged with both end portions 55a of the cotter engaging portion 55, so that the inner rolling roll housing 51 is separated from the outer rolling roll housing 12. Restrain the movement.

And this embodiment is the correction apparatus which correct | amends the right bending of the longitudinal direction of the H-section steel 1 following the curvature correction apparatus 50 in the conveyance direction of the H-section steel 1 similarly to the apparatus 10 of 1st Embodiment. This device is a device in which the components are left and right reversed from the bending straightening device 50.
The inner rolling roll according to the present invention corresponds to the upper inner rolling roll 25 and the lower inner rolling roll 27, the track according to the present invention corresponds to the suspension rail 32, and the suspension support according to the present invention is the housing suspension. Corresponding to the lowering support part 14, the self-propelled means according to the present invention corresponds to the housing self-propelled part 52, the coupling means according to the present invention corresponds to the housing coupling part 53, and the rotation transmitting means according to the present invention is driven. The motor 60, the worm gear 61, and the rotational force transmission gear 59 are supported.

Next, in the bending straightening device 50 of the present embodiment, a procedure for recombining the upper inner rolling roll 25, the lower inner rolling roll 27, and the left outer rolling roll 21 that have been worn by the progress of the straightening work into new rolls will be described.
First, in FIGS. 11A and 11B, by rotating the drive motor 60 in the reverse direction, the rotational force is transmitted to the feed screw shaft via the worm gear 61 and the rotational force transmission gear 59, and the non-rotatable nut member 62 is transmitted. Move down. Due to the downward movement of the nut member 62, the cotter 64 in which the tapered surfaces 64a are engaged with both end portions 55a of the cotter engagement portion 55 is released from the engagement with the cotter engagement portion 55 and moved downward. Go. Thereby, the inner rolling roll housing 51 and the outer rolling roll housing 12 can be separated in the left-right direction.

Next, the housing self-running portion 52 is caused to self-run in the right direction of FIG. Along with the self-running of the housing self-running portion 52 in the right direction, the inner rolling roll housing 51 moves in a direction away from the outer rolling roll housing 12 together with the housing free-running portion 52 (see FIG. 12).
And the inner rolling roll housing 13 separated from the outer rolling roll housing 12 includes an upper inner rolling roll 25, a lower inner rolling roll 27, an upper roll supporting portion 26, and a lower roll supporting portion 28, which are mounted inside. The recombination work is performed at the position on the left side of FIG.

Further, the outer rolling roll housing 12 is recombined by removing the connection with the power transmission shaft 23 in a state where it is suspended and held by a crane (not shown) at the position on the left side of FIG.
Therefore, the bending correction apparatus 50 of the present embodiment includes the housing self-running portion 52 that self-runs on the suspension rail 3 while the inner rolling roll housing 51 is suspended and held, so that the inner rolling roll housing 51 moves. Since there is no moving means in the direction to perform, it is possible to secure a wider working space than in the first embodiment, and to perform the roll recombination work more efficiently.

  Moreover, the cotter raising / lowering apparatus 54 which comprises the housing coupling | bond part 53 of this embodiment arrange | positions the feed screw shaft 58 to the up-down direction in the apparatus case 56 arrange | positioned at the side part of the outer rolling housing plates 12a and 12b, The forward / reverse rotation of the drive motor 60 is transmitted to the feed screw shaft 58 so that the cotter 64 connected to the outer periphery of the feed screw shaft 58 via the nut member 62 moves in the vertical direction along the feed screw shaft 58. By doing so, it is configured to engage or disengage the both ends 55a of the cotter engaging portion 55 of the inner rolling roll housing 51 that has moved into the cotter lifting device 54. Thus, the cotter lifting / lowering device 54 of the present embodiment has a structure in which the cotter 64 moves in the vertical direction along the feed screw shaft 58, so that the stroke mechanism for moving the cotter 64 in the vertical direction is downsized. In addition, a large work space can be secured around the cotter lifting device 54.

  In the first and second embodiments described above, two corrections are made: a device that corrects the left-hand bend in the longitudinal direction of the H-section steel 1 and a device that corrects the right-hand bend in the longitudinal direction of the H-section steel 1. Although the apparatus is configured to be continuously arranged in the conveying direction of the H-section steel 1, only one of them may be arranged. For example, even if the H-section steel 1 is bent to the right, if it is turned upside down, it will turn to the left. Therefore, if a device for inverting the H-section steel 1 is provided on the upstream side of the bending correction apparatus, one The bend correction device can handle any direction of bending.

  DESCRIPTION OF SYMBOLS 1 ... H-section steel, 1a ... Web, 1b1 ... Left flange, 1b2 ... Right flange, 10 ... Bending straightening device, 11 ... Floor, 12 ... Outer rolling roll housing, 12a, 12b ... Outer rolling housing plate, 12c ... Window, 12d ... Housing arrangement space, 13 ... Inner rolling roll housing, 13a, 13b ... Inner rolling housing plate, 13c ... Notch part, 13d ... Connection part, 14 ... Housing suspension support part, 15 ... Housing moving part, 15a ... Drive Rod, 15b ... Linear motion actuator, 16 ... Housing joint, 21 ... Left outer rolling roll, 22 ... Outer rolling roll support, 23 ... Power transmission shaft, 25 ... Upper inner rolling roll, 26 ... Upper roll support, 27 ... Lower inner rolling roll, 28 ... Lower roll supporting part, 29 ... Upper inner rolling roll reduction mechanism, 30 ... Lower inner rolling roll reduction mechanism, 31 ... Leg Holding part, 31a, 31b ... Beam, 32 ... Hanging rail, 33 ... Rolling part, 34 ... Strut, 35 ... Wheel, 36 ... Leg, 37 ... Leg support part, 38 ... Servo motor, 40a-40c ... Outer rolling Side first convex portion to outer rolling side third convex portion, 41a ... inner rolling side first convex portion, 41b ... inner rolling side second convex portion, 42a to 42e ... through hole, 43 ... cotter, 44 ... cotter lifting mechanism 44a ... Linear motion mechanism, 44b ... Servo motor, 50 ... Bending correction device, 51 ... Inner rolling roll housing, 52 ... Housing self-running portion, 53 ... Housing coupling portion, 54 ... Cotter lifting device, 55 ... Cutter engaging portion , 55a ... both ends of the cotter engaging portion, 56 ... device case, 57a to 57c ... bearing, 58 ... feed screw shaft, 59 ... rotational force transmission gear, 60 ... drive motor, 61 ... worm gear, 62 ... nut member, 63 ... cotta The connecting portion, 64 ... Cotter, 64a ... tapered surface

Claims (6)

A device that corrects the longitudinal bending of the H-section steel in which the web extends in the left-right direction orthogonal to the transport direction and the left and right flanges extend in the vertical direction from the left and right ends of the web,
An outer rolling roll for rolling down one outer surface of the left and right flanges;
An outer rolling roll housing that is installed on the floor and supports the outer rolling roll via a bearing such that the rotating shaft extends in the vertical direction;
An inner rolling roll for rolling down one inner surface of the left and right flanges;
An inner rolling roll housing that supports the inner rolling roll via a bearing such that the rotating shaft extends in the vertical direction;
One end is provided on the upper part of the outer rolling roll housing, and the other end extends in the left-right direction, and
A suspension support portion for supporting the inner rolling roll housing in a suspended manner on the track,
Moving means for moving the inner rolling roll housing along the track from a position along the outer rolling roll housing to a position spaced from the outer rolling roll housing;
A bending correction apparatus for H-section steel, comprising: a coupling means for detachably coupling the inner rolling roll housing moved to a position along the outer rolling roll housing to the outer rolling roll housing. The coupling means includes
An outer rolling side protrusion provided in the outer rolling roll housing;
When the inner rolling roll housing moves to a position along the outer rolling roll housing, an inner rolling side convex portion provided on the inner rolling roll housing that is superposed on the outer rolling side convex portion from above and below,
A through hole provided in communication with the outer rolling side convex portion and the inner rolling side convex portion in the vertical direction; and
A cotter that joins the outer rolling side convex part and the inner rolling side convex part by inserting into these through holes,
The H-steel bending correction apparatus according to claim 1, further comprising: a cotter lifting mechanism that lifts and lowers the cotter so as to be inserted into and removed from the through hole. The outer rolling side convex portion is provided at a predetermined position of the outer rolling roll housing apart from a position where the outer rolling roll is replaced.
The bend correction of the H-section steel according to claim 2, wherein the inner rolling side convex portion is provided at a predetermined position of the inner rolling roll housing which is separated from a position where the inner rolling roll is exchanged. apparatus. The coupling means includes
A cotter engagement portion provided in the inner rolling roll housing;
When the inner rolling roll housing is moved to a position along the outer rolling roll housing, the outer rolling roll housing is detachably engaged by engaging the cotter engaged with the cotter engaging portion. 2. A bend correction device for H-section steel according to claim 1, further comprising a cotter lifting device coupled to the cotter.   The cotter lifting device includes a feed screw shaft extending in a direction in which the cotter moves up and down, a rotation transmission means for transmitting forward and reverse rotations to the feed screw shaft, and an outer periphery of the feed screw shaft. The bent H-shaped steel according to claim 4, further comprising: a non-rotatable nut member and the cotter connected to the nut member and translating along the feed screw shaft. Straightening device.   The moving means functions as the suspending support portion that suspends and supports the inner rolling roll housing on the track, and from a position along the outer rolling roll housing to a position spaced from the outer rolling roll housing. The bend straightening device for H-section steel according to any one of claims 1 to 5, wherein the device is self-running means for self-running on a track.

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