JP5833396B2 - 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-shaped steel conveyed to the bending straightening device is an H posture in which the conveyance state is stable (as shown in FIG. 7, the web 1a extends horizontally, and a pair of flanges 1b1 on the left and right of the web 1a. , 1b2 is the posture of the H-section steel 1). As shown in FIG. 8, the H-section steel 1 conveyed from the rolling process in this H posture is bent in the longitudinal direction (FIG. 8 is a right turn that curves with the right flange 1b2 inside, but the left flange 1b1 inside. 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. 9, 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, A middle 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 middle frame 5 and the apparatus main body 6 and supports the middle 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.
When correcting the right bend of the H-section steel 1 curved with the right flange 1b2 as the inside, it is continuously arranged in the apparatus of FIG. 9 in the conveying direction of the H-section steel 1 and is configured as 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. 9 are worn with the progress of the straightening work, the roll recombination work is performed at a predetermined replacement period.
Since the bend straightening device in FIG. 9 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 axes 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-described object, in the bending correction apparatus for H-section steel according to claim 1 of the present invention, the web extends in the left-right direction orthogonal to the conveying direction, and the web extends in the up-down direction from the left-right end of the web. An apparatus for correcting the longitudinal bending of the H-shaped steel in which the left and right flanges extend, an inner rolling roll for rolling down one inner surface of the left and right flanges, and an outer rolling roll for rolling one outer 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; and an outer rolling roll that supports the outer rolling roll via the bearing such that the rotating shaft extends in the vertical direction. An outer rolling roll housing, a housing attaching / detaching portion for detachably connecting the inner rolling roll housing and the outer rolling roll housing, and the inner released by the housing attaching / detaching portion. At least one of the extended roll housing and the outer rolling roll housing, and a housing moving means for enabling move to the right and left direction of the apparatus external spaced from the other, the housing detachable unit side of the inner rolling roll housing A first coupling convex portion provided on a portion, a second coupling convex portion provided on a side portion of the outer rolling roll housing and superposed on the first coupling convex portion from above and below, and the first and second coupling convex portions. Through holes provided in communication with the upper and lower parts, cotters for connecting the first and second coupling protrusions by being inserted into the through holes, and raising and lowering the cotters to be inserted into and removed from the through holes. It is an apparatus provided with the cotter raising / lowering mechanism to perform .

According to a second aspect of the present invention, in the bending correction apparatus for the H-section steel according to the first aspect, one of the inner rolling roll housing and the outer rolling roll housing is separated in the left-right direction with respect to the one. Thus, a cotter detachment preventing means for preventing the cotter inserted into the through hole from being pushed by applying a pressing force is provided.
Further, the invention according to claim 3 is the apparatus for correcting the bending of an H-section steel according to claim 1 or 2 , wherein the housing moving means is provided at a lower part of at least one of the inner rolling roll housing and the outer rolling roll housing. And a track on which the wheel rolls to the outside of the device.

According to the bend straightening device of the H-section steel according to the present invention, when replacing the inner rolling roll and the outer rolling roll, the coupling between the inner rolling roll housing and the outer rolling roll housing is released by the housing attaching / detaching portion, and the inner rolling is performed. Since at least one of the roll housing and the outer rolling roll housing can be moved to the outside of the apparatus by the housing moving means, the roll recombination work can be easily performed while ensuring a wide work space.
Moreover, since roll recombination can be performed outside the apparatus, it is not necessary to provide a roll recombination work space in the upper part of the apparatus, and a compact H-shaped steel bending correction apparatus can be provided.

It is the figure which showed the bending correction apparatus of the H-section steel 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 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, the lower inner rolling roll reduction | decrease mechanism, and the left rolling roll of the bending correction apparatus of the H-section steel which concerns on this invention. It is a figure which shows the detail of the coupling structure of the inner rolling roll housing and outer rolling roll housing which concern on this invention. It is a figure which shows the state which isolate | separated the inner rolling roll housing and the outer rolling roll housing which concern on this invention in 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 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.

  As shown in FIGS. 2 and 3, the bending straightening device 10 of the present embodiment includes an inner rolling roll housing 12 and an outer rolling roll housing 13 arranged in an apparatus base 11, and these inner rolling roll housings. 12 and the outer rolling roll housing 13 are connected by a housing attaching / detaching portion 26. In addition, a track 30 is laid on the floor of the apparatus base 11 along the left-right direction (the direction orthogonal to the conveying direction of the H-section steel 1) from which the inner rolling roll housing 12 is separated. Is extended to the outside of the apparatus base 11.

As shown in FIG. 4, the inner rolling roll housing 12 includes an upper inner rolling roll 14, an upper roll supporting portion 19, a lower inner rolling roll 15, a lower roll supporting portion 20, an upper inner rolling roll reduction mechanism 16, and a lower inner rolling. A roll reduction mechanism 17 is disposed.
The inner rolling roll housing 12 is formed with a window 18 through which the H-section steel 1 having an H posture passes.
As shown in FIG. 4, the upper roll support part 19 is arrange | positioned at the inner rolling roll housing 12, and supports the upper inner rolling roll 14 via a bearing (not shown) so that a rotating shaft may be extended in an up-down direction. The upper inner rolling roll 14 is in contact with the inner surface of the left flange 1b1 above the web 1a of the H-section steel 1 passing through the window 18.

Further, the lower roll support portion 20 is disposed in the inner rolling roll housing 12, and supports the lower inner rolling roll 15 via a bearing so that the rotation axis extends in the vertical direction. It is in contact with the inner surface of the left flange 1b1 below the web 1a of the H-section steel 1 passing through the window 18.
The upper inner rolling roll reduction mechanism 16 has an upper inner rolling roll supported by the upper roll support 19 by the piston rod of the reduction cylinder 21 disposed in the inner rolling roll housing 12 extending toward the upper roll support 19. 14 is pressed down from the inner surface of the left flange 1b1 above the web 1a of the H-section steel 1 toward the outer surface.

  The lower inner rolling roll reduction mechanism 17 is configured such that the lower inner rolling roll supported by the lower roll support 20 is formed by the piston rod of the reduction cylinder 22 disposed in the inner rolling roll housing 12 extending toward the lower roll support 20. 15 is reduced from the inner surface of the left flange 1b1 below the web 1a of the H-section steel 1 toward the outer surface.

As shown in FIG. 2, the inner rolling roll housing 12 can be adjusted in the vertical position by the operation of the housing lifting mechanism 32, and the lower end portion of the inner rolling roll housing 12 is on the track 30. Rolling wheels 31 are provided.
Further, as shown in FIG. 4, the outer rolling roll housing 13 supports the left outer rolling roll 23 via a bearing (not shown) so that the rotating shaft extends in the vertical direction, and the left outer rolling roll 23 abuts on the outer surface of the left flange 1 b 1 of the H-section steel 1 passing through the window 18.
Then, as shown in FIG. 2, a rotational driving force is transmitted to the left outer rolling roll 23 from a rotational power source 24 disposed on the upper part of the apparatus mount 11 via a power transmission shaft 25.

  On the other hand, as shown in FIGS. 2 and 5, the housing attaching / detaching portion 26 that couples the inner rolling roll housing 12 and the outer rolling roll housing 13 includes a coupling convex portion 13 a provided on a side portion of the outer rolling roll housing 13. A through hole 13a1 formed so as to penetrate in the vertical direction of the coupling convex portion 13a, and a pair of coupling convex portions 12a and 12b provided on the side of the inner rolling roll housing 12 that is superposed on the coupling convex portion 13a from above and below, Through holes 12a1 and 12b1 formed through the pair of coupling convex portions 12a and 12b in the vertical direction so as to communicate with the through hole 13a1 of the coupling convex portion 13a, the through holes 13a1 of the coupling convex portion 13a and the pair of coupling convex portions And a cotter 27 inserted into the through holes 12a1 and 12b1 of the portions 12a and 12b.

  The lower end of the cotter 27 is connected to a cotter lifting mechanism 28 disposed in the inner rolling roll housing 12. As shown in FIG. 2, the cotter elevating mechanism 28 includes a linear motion mechanism 28a that linearly moves when a rotational force is transmitted, and a servo motor 28b that transmits the rotational force to the linear motion mechanism 28a. When the linear motion mechanism 28a moves upward due to the positive rotation of the servo motor 28b, the cotter 27 moves upward and the inner rolling roll housing 12 and the outer rolling roll housing 13 are coupled. Further, when the linear motion mechanism 28a moves downward due to the reverse rotation of the servo motor 28b, the cotter 27 moves downward and at least passes through the through hole 13a1 of the coupling convex portion 13a and the through hole 12a1 of the coupling convex portion 12a, and is internally rolled. The roll housing 12 and the outer rolling roll housing 13 are separable in the left-right direction (direction perpendicular to the conveying direction of the H-section steel 1).

  The outer rolling roll housing 13 is provided with a pair of cotter retaining cylinders 29. The pair of cotter retaining cylinders 29 are provided at positions sandwiching the coupling convex portion 13 a of the outer rolling roll housing 13, and pistons toward the tips of the pair of coupling convex portions 12 a and 12 b of the inner rolling roll housing 12. The rod 29a is provided so as to extend. When the piston rod 29a of the pair of cotter retaining cylinders 29 is extended and comes into contact with the pair of coupling protrusions 12a and 12b, the inner rolling roll housing 12 is separated from the outer rolling roll housing 13 in the left-right direction. Therefore, the cotter 27 inserted into the coupling convex portion 13a and the pair of coupling convex portions 12a and 12b is prevented from coming off.

In addition, 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. This is a device with the left and right reversed.
The inner rolling roll according to the present invention corresponds to the upper inner rolling roll 14 and the lower inner rolling roll 15, the first coupling convex portion according to the present invention corresponds to the coupling convex portions 12 a and 12 b, and The two coupling convex portions correspond to the coupling convex portions 13a, and the cotter retaining means according to the present invention corresponds to the cotter retaining cylinder.

  The bending straightening device 10 of the present embodiment shown in FIGS. 2 to 5 adjusts the vertical positions of the upper inner rolling roll 14 and the lower inner rolling roll 15 by the operation of the housing elevating mechanism 32, and the upper inner rolling roll reduction mechanism 16. The upper inner rolling roll 14 and the lower inner rolling roll 15 are pressed in the direction from the inner surface to the outer surface of the left flange 1b1 of the H-section steel 1 by the operation of the lower inner rolling roll reduction mechanism 17, and the power transmission shaft is transmitted from the rotational power source 24. When the left outer rolling roll 23 to which the rotational force is transmitted through 25 conveys the H-section steel 1 (in the arrow direction of the H-section steel 1 in FIG. 1), the upper inner rolling roll 14 and the lower inner rolling roll 15 are left. The left bend in the longitudinal direction of the H-section steel 1 is corrected by reducing the inner surface of the flange 1b1 and the left outer rolling roll 23 reducing the outer surface of the left flange 1b1.

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 bending in the longitudinal direction of the H-section steel 1 is corrected by reducing the inner surface of the right flange 1b2 and the right outer rolling roll reducing the outer surface of the right flange 1b2.
Here, when the bending straightening device 10 of the present embodiment corrects the bending of the H-section steel 1, the inner rolling roll housing 12 supporting the upper inner rolling roll 14 and the lower inner rolling roll 15, and the left outer A correction reaction force acts on the outer rolling roll housing 13 supporting the rolling roll 23 in the left-right direction opposite to the direction in which the H-section steel 1 is rolled down. The inner rolling roll housing 12 and the outer rolling roll housing 13 that are subjected to correction reaction forces in opposite directions (left and right directions) are joined together without causing a backlash in the left and right directions by a housing attaching / detaching portion 26 using a cotter 27. Therefore, the correction reaction force when correcting the bending of the H-section steel 1 can be reliably received.

  Further, since the outer rolling roll housing 13 is provided with a cotter retaining cylinder 29 that prevents the cotter 27 that connects the inner rolling roll housing 12 and the outer rolling roll housing 13 from being detached, the bending of the H-section steel 1 is prevented. The combined state of the inner rolling roll housing 12 and the outer rolling roll housing 13 during the straightening operation can be reliably maintained.

Next, in the bending straightening device 10 of the present embodiment, a procedure for recombining the upper inner rolling roll 14, the lower inner rolling roll 15 and the left outer rolling roll 23, which have been worn by the progress of the straightening work, into new rolls is shown in FIG. Will be described with reference to FIG.
First, the linear motion mechanism 28a is moved downward by rotating the servo motor 28b of the cotter lifting mechanism 28 in the reverse direction, and the cotter 27 connected to the linear motion mechanism 28a passes through the coupling convex portion 13a of the outer rolling roll housing 13. The hole 13a1 and the through-hole 12a1 of the one coupling convex portion 12a of the inner rolling roll housing 12 are in a state of being removed. Thereby, the inner rolling roll housing 12 and the outer rolling roll housing 13 can be separated in the left-right direction.

Next, the wheel 31 provided at the lower end of the inner rolling roll housing 12 is rolled on the track 30, and the inner rolling roll housing 12 is moved to the outside of the apparatus mount 11.
And the recombination operation | work of the upper inner rolling roll 14, the lower inner rolling roll 15, the upper roll support part 19, and the lower roll support part 20 with which the inner rolling roll housing 12 moved to the exterior of the apparatus base 11 was mounted is performed.

Further, the outer rolling roll housing 13 is detached from the power transmission shaft 25 while being suspended and held by a crane (not shown), and the inner rolling roll housing 12 is placed outside the apparatus mount 11 in the direction opposite to the moving direction. It is lifted and moved by a crane for recombination work.
Therefore, in the bending straightening device 10 of the present embodiment, the upper inner rolling roll 14 and the lower inner rolling roll 15 having a small roll diameter are quickly worn by the straightening work and have a short roll replacement cycle. Is rolled onto the track 30 so that the inner rolling roll housing 12 can be easily moved to the outside of the apparatus base 11 and a roll recombination operation can be performed while ensuring a wide working space outside the apparatus base 11. It can be done easily.

Further, the outer rolling roll housing 13 is also lifted and moved by a crane outside the device mount 11 in the direction opposite to the moving direction of the inner rolling roll housing 12, so that the roll recombination work can be easily performed while ensuring a wide working space. Can do.
Furthermore, since the roll recombination is performed outside the device mount 11 in this embodiment, it is not necessary to provide a roll recombination work space in the upper part of the device mount 11, and the compact device mount 11 is provided, thereby providing a compact device. can do.

  DESCRIPTION OF SYMBOLS 1 ... H-section steel, 1a ... Web, 1b1 ... Left flange, 1b2 ... Right flange, 10 ... Bending correction apparatus, 11 ... Apparatus mount, 12 ... Inner rolling roll housing, 12a, 12b ... Coupling convex part, 12a1, 12b1 ... Through hole, 13 ... outer rolling roll housing, 13a ... coupling convex part, 13a1 ... through hole, 14 ... upper inner rolling roll, 15 ... lower inner rolling roll, 16 ... upper inner rolling roll reduction mechanism, 17 ... lower inner rolling roll Reduction mechanism, 18 ... window, 19 ... upper roll support, 20 ... lower roll support, 21 ... reduction cylinder, 22 ... reduction cylinder, 23 ... left outer rolling roll, 24 ... rotational power source, 25 ... power transmission shaft, 26 ... Housing attachment / detachment part, 27 ... Cotter, 28 ... Cotter lifting mechanism, 28a ... Direct acting mechanism, 28b ... Servo motor, 29 ... Cotter retaining cylinder 29a ... piston rod 30 ... track, 31 ... wheel, 32 ... housing lift mechanism

Claims (3)

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 inner rolling roll for rolling down one inner surface of the left and right flanges;
An outer rolling roll for rolling down one outer 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;
An outer rolling roll housing that supports the outer rolling roll via a bearing such that the rotating shaft extends in the vertical direction;
A housing attaching / detaching portion that detachably couples the inner rolling roll housing and the outer rolling roll housing;
Housing moving means for allowing at least one of the inner rolling roll housing and the outer rolling roll housing released from coupling by the housing attaching / detaching portion to move to the outside of the apparatus in the left-right direction spaced apart from the other ,
The housing attaching / detaching portion is
A first coupling protrusion provided on a side of the inner rolling roll housing;
A second coupling convex portion provided on a side of the outer rolling roll housing and superposed on the first coupling convex portion from above and below;
A through hole provided in communication with the first and second coupling protrusions in the vertical direction;
A cotter for coupling the first and second coupling protrusions by inserting into these through holes;
And a cotter lifting mechanism for lifting and lowering the cotter into and out of the through hole . A cotter detachment prevention that prevents the cotter from being inserted into the through hole by applying a pressing force to one of the inner rolling roll housing and the outer rolling roll housing so that the other is laterally separated from the one. 2. An apparatus for correcting the bending of an H-section steel according to claim 1, further comprising means. The housing moving means includes a wheel provided at a lower portion of at least one of the inner rolling roll housing and the outer rolling roll housing;
The bend straightening device for H-section steel according to claim 1 or 2, further comprising a track laid to the outside of the device and on which the wheel rolls .

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