JP2018030158A - Apparatus for straightening steel sheet pile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for straightening strain of a sheet pile capable of straightening the sheet pile with respect to opening deformation and closing deformation at a higher speed and with higher accuracy.SOLUTION: An apparatus 3 for straightening a steel sheet pile is provided for straightening to a normal shape, the steel sheet pile having two flange parts extending respectively from both width-direction ends of a web part and bending and joint parts provided in the tips of the two flange parts. The apparatus 3 comprises a conveying unit for conveying the steel sheet pile in the horizontal direction along the longitudinal direction and a straightening unit provided in the middle of a conveying passage of the conveying unit and straightening the steel sheet pile by adding stress to a deformation place of the steel sheet pile. The straightening unit comprises a first straightening part 15 positioned on the upstream side in the conveying direction and expanding the flange part so as to have a bending angle of the normal shape or more and a second straightening part 16 having a horizontal pressing part positioned at a position downstream from the first straightening part in the conveying direction and pushing in the flange part of the deformation place having the bending angle or more of the normal shape to the inside and a width determining part for determining a pressing quantity by the horizontal pressing part.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a steel sheet pile correcting device that corrects distortions such as warping and bending of a U-shaped steel sheet pile mainly used for civil engineering.

  As shown in FIG. 24, a steel sheet pile 1 used for civil engineering and construction work for excavation earth retaining, water blocking wall and the like is formed by bending a web portion 102 and both ends of the web portion. The section 103 is formed into a groove shape in cross section, and a hook-shaped joint section 104 is formed at the tip of the flange section. The steel sheet pile 100 can be connected in the width direction by reversing directions alternately and engaging a plurality of steel sheet piles with each other.

  This type of steel sheet pile 100 is deformed in the direction in which the bending angle between the web portion 2 and the flange portion 3 opens (hereinafter referred to as opening deformation) or bent due to the impact of driving into the soil or pulling out. The corner may be deformed in the closing direction (hereinafter referred to as closing deformation). In addition, the joint 104 is opened when a force that separates the adjacent steel sheet piles 100 in the width direction due to earth pressure or water pressure applied to the steel sheet pile 100 or when soil or the like enters the joint portion 104. There was a case of deformation in the direction (hereinafter referred to as joint deformation).

  The steel sheet pile 100 that has been deformed after being used once in this manner has been used for reuse after being corrected to a regular shape using a distortion correcting device. As this correction device, Patent Document 1 (Japanese Patent Laid-Open No. 2000-15334), Patent Document 2 (Japanese Patent Laid-Open No. 2007-296549), and the like are known.

  The correction tool disclosed in Patent Document 1 includes three types of correction tools that correct opening deformation, closing deformation, and joint deformation, respectively, and each selects a correction tool according to the deformation mode of the sheet pile, Each is disclosed to be transformed into a regular shape.

  The correction device described in Patent Document 2 includes a web portion and a flange portion by a placing table on which a sheet pile can be placed, a first advancing / retracting means movable in the vertical direction, and a second advancing / retreating means movable in the horizontal direction. The sheet pile can be corrected to a normal shape with respect to the distortion of the web part and the flange part, particularly the bending angle of the flange part.

JP 2000-15334 A JP 2007-296549 A

  However, a steel sheet pile made of metal has stress-strain characteristics as its material characteristics. In general, a steel material has a certain elasticity, and when an external force is applied and bending is performed to a predetermined size, a phenomenon of returning to the original shape occurs when the external force is released. For this reason, it is necessary to calculate the return amount due to elasticity, and correction to a normal shape is difficult.

  In addition, for opening deformation and closing deformation, force in the opposite direction is required for correction, so each correction tool independently corrects opening deformation and closing deformation, and when correcting to the normal shape, each correction It was difficult to adjust the amount of deformation performed by the tool, and the accuracy of correction to the original shape was poor.

  For this reason, in the above correction device, the operator of the device was performing correction work considering the correction width based on experience, but the work accuracy was not determined by manual work, causing problems in quality, There was also a problem that time and labor were heavy because it was necessary to repeatedly make fine adjustments by visual confirmation of the workers.

  Moreover, in the correction apparatus of patent document 2, although the correction of a flange part is performed by pressing an upper mold | type against a lower mold | type, when it presses to the grade which corrects after an upper mold | type contacts, There is also a problem that the relative position is unstable and the accuracy of correction is deteriorated.

  Therefore, the technical problem to be solved by the present invention is to provide a sheet pile distortion correction apparatus capable of correcting a sheet pile at higher speed and higher accuracy.

  In order to solve the above technical problem, the present invention provides a steel sheet pile straightening device having the following configuration.

An apparatus for correcting a steel sheet pile is a steel sheet pile having a web portion, two flange portions that are bent and extended from both ends in the width direction of the web portion, and a joint portion provided at each end of the two flange portions. A steel sheet pile correction device that is provided in a conveying path along the longitudinal direction and corrects a deformation portion of the steel sheet pile into a regular shape,
A bottom receiving mold having a sheet pile storage recess for receiving the web portion and the bent portion of the deformation portion of the steel sheet pile and determining the width direction position of the steel sheet pile;
A vertical pressing portion that presses the web portion and presses the steel sheet pile against the bottom receiving mold;
A horizontal pressing portion capable of pressing the left and right flange portions deformed with respect to the bending angle of the normal shape, and pressing the flange portion corrected to the normal shape,
The vertical pressing portion and the horizontal pressing portion operate independently by independent actuators.

  In the said structure, in order to confirm the grade of correction | amendment, it is preferable to provide the measuring part which is provided in the predetermined position around the said steel sheet pile, measures the distance to the said steel sheet pile, and pinpoints the said deformation | transformation location.

  The horizontal pressing portion is pivotally attached to the vertical pressing portion and is configured to be openable and closable, and corrects the left and right flange portions that are deformed in a closed direction with respect to the regular bending angle so as to open the left and right flange portions. By comprising an upper pressing portion that is configured and protrudes outward so as to contact the upper end of the flange portion, the joint portion can be prevented from being deformed by correction of the flange portion, and further, the deformed joint portion Can be corrected.

  Moreover, the said structure WHEREIN: It is preferable to provide the width determination part which determines the pressing width of the said flange part by the said horizontal press part by contacting the said flange part pressed by the said horizontal press part.

Also,
An upper die provided to be movable up and down around the vertical pressing portion;
The horizontal pressing portion may include a main body portion that contacts an upper end of the flange portion and a contact portion that extends downward from the main body portion, and may be configured to support the lower die so as to protrude downward from the lower surface of the upper mold. Good.

The horizontal pressing portion is
A first horizontal pressing portion that is located on the upstream side in the transport direction and that widens the flange portion so that the deformed portion having a smaller bending angle than the normal shape is equal to or greater than the normal shape;
It can comprise so that it may be equipped with the 2nd horizontal press part which is located in the conveyance direction downstream with respect to the said 1st horizontal press part, and pushes the flange part of the said deformation | transformation location which has more than the said regular shape bending angle.

In the above-described configuration, the first and second horizontal pressing portions are provided in independent first correction unit and second correction unit, respectively.
Preferably, each of the first correction unit and the second correction unit includes the bottom receiving mold and a vertical pressing portion.

The second correction unit includes an upper mold that is provided so as to be movable up and down around the vertical pressing part, and a joint correction mold that is provided so as to be movable in the width direction and abuts on the joint part tip to correct the joint part. In addition,
The second horizontal pressing portion includes a main body portion that contacts an upper end of the flange portion and an abutting portion that extends downward from the main body portion, and is configured to support the lower mold so as to protrude downward from the lower surface. May be.

  The said structure WHEREIN: It is preferable that the said joint correction type | mold provides the notch which can contact | abut the contact part of a said 2nd horizontal press part.

  The horizontal pressing portion includes an internal horizontal pressing portion that is pivotally attached to the vertical pressing portion and an external horizontal pressing portion that presses from the side of the flange portion, and presses the flange portion to each other. It can be configured to function as a width determining unit that determines the width.

  The said sheet pile accommodation recessed part may be provided with the ditch | groove extended in the said conveyance direction in the width direction intermediate part.

  Moreover, the opposing surface of the said sheet pile accommodation recessed part and a vertical press part can be formed so that the unevenness | corrugation extended in the conveyance direction of the said steel sheet pile may mutually fit.

  The said sheet pile accommodation recessed part can be comprised so that the bending part of the said steel sheet pile can be clamped by the said vertical press part.

  It is provided at both ends of the bottom receiving mold in the conveying direction, and can be moved up and down between a conveying position where the web part is located above the bottom receiving mold and a correction position where the web is stored in the sheet pile storage recess. The support roller comprised in can be provided.

  According to the present invention, in order to identify a deformed portion of the flange and correct the deformed portion by the measuring unit, the deformed portion can be corrected in the transport path that is continuously transported. And in the said structure, since a steel sheet pile can be positioned in the width direction, and a steel sheet pile can be firmly supported by a vertical press part at the time of correction by a horizontal press part, a horizontal press part is symmetrically supported. By making it operate, the accuracy of correction to a regular shape can be increased.

  Further, according to the present invention, the straightening unit takes into account the elastic strain deformation after releasing stress by straightening the steel sheet pile by applying stress above the yield point to the flange part by the horizontal pressing part. The pressing width is determined by the width determining portion that contacts the flange portion. Thereby, even if it is a case where a joint part etc. have changed, it can correct with high accuracy.

  Therefore, the amount of correction for the deformation of the steel sheet pile can be easily determined in consideration of the stress-strain characteristics, and the correction work can be performed quickly and with high accuracy.

It is a side view which shows the whole correction system structure provided with the correction apparatus of the steel sheet pile which concerns on embodiment of this invention. It is a side view which shows the structure of the conveying apparatus used for the correction apparatus of a steel sheet pile. It is sectional drawing of the conveying apparatus in the III-III line of FIG. It is sectional drawing seen from the side which shows the structure of the correction apparatus used for the correction apparatus of the steel sheet pile which concerns on 1st Embodiment of this invention. It is sectional drawing of the correction apparatus in the VV line | wire of FIG. It is sectional drawing of the correction apparatus in the VI-VI line of FIG. It is an expanded sectional view showing the composition of the 2nd correction unit. It is sectional drawing of the correction part in the VIII-VIII line of FIG. It is sectional drawing of the correction part in the IX-IX line of FIG. It is the elements on larger scale explaining the correction width of a flange part typically. It is a figure which illustrates typically the operation | movement of the correction of the steel sheet pile performed by a 2nd correction unit, and is a figure which shows the state which fitted the steel sheet pile in the 2nd bottom receiving metal mold | die. FIG. 12 is a schematic explanatory view of the correcting operation following FIG. 11, showing a state in which the steel sheet pile is pressed with a medium size. FIG. 13 is a schematic explanatory diagram of the correction operation following FIG. 12 and shows a state in which the opening deformation is corrected by the second horizontal pressing portion. FIG. 14 is a schematic explanatory view of the correcting operation subsequent to FIG. 13, illustrating a state in which the joint correction mold is brought close to the flange portion in order to correct joint deformation. FIG. 15 is a schematic explanatory view of the correcting operation following FIG. 14, showing a state in which the second horizontal pressing portion is close to the flange portion in order to correct joint deformation. FIG. 16 is a schematic explanatory view of the correction operation following FIG. 15, showing a state where the upper mold is pressed by the upper mold pressing portion. It is an expanded sectional view which shows the structure of the 2nd correction unit of the correction apparatus of the steel sheet pile concerning 2nd Embodiment. It is a top view which shows the structure of the width adjustment mechanism of the flange width stopper of the correction apparatus of the steel sheet pile of FIG. It is the elements on larger scale of the 2nd vertical press type | mold and 2nd bottom receiving metal mold | die of the correction apparatus of the steel sheet pile of FIG. It is a schematic diagram which shows the position of the 2nd horizontal press part by the presence or absence of a deformation | transformation of a joint part. It is a side view which shows the structure of the correction apparatus of the steel sheet pile concerning 3rd Embodiment. It is the top view which showed typically the structure of the correction unit of FIG. It is the elements on larger scale of the correction unit of FIG. It is a perspective view which shows the structure of a steel sheet pile.

  Hereinafter, a steel sheet pile correcting device according to an embodiment of the present invention will be described with reference to the drawings. Drawing 1 is a side view showing the whole straightening system composition provided with the correction device of the steel sheet pile concerning the embodiment of the present invention. As shown in FIG. 1, the steel sheet pile correction device system 1 according to the present embodiment has a configuration in which a correction device 3 is disposed between two conveying devices 2 a and 2 b.

  The conveyance devices 2a and 2b and the correction device 3 are controlled in operation by a control calculation unit (not shown), and the conveyance and correction operations of the steel sheet pile described later are performed according to an operation program stored in the control calculation unit.

  The conveying devices 2a and 2b are provided on the upstream side and the downstream side, respectively, with the correction device 3 interposed therebetween. The upstream and downstream transport devices 2a and 2b have a common configuration, and transport the steel sheet pile 100 horizontally along its longitudinal direction.

  As shown in FIGS. 2 and 3, the conveying devices 2 a and 2 b include an installation base 4 and a roller unit 5. The installation base 4 supports the roller unit 5 so that the vertical position of the roller unit 5 can be changed, and can move the conveyance surface up and down.

  The installation base 4 includes, as a support mechanism for the roller unit 5, a hydraulic cylinder 6 and a link 7 that is rotatably attached by the hydraulic cylinder 6. The links 7 are provided on both end sides of the installation base 4, and the two links are connected by a connecting link 8 and interlocked. A roller unit 5 is provided at the tip of the link 7 and constitutes a four-joint link together with the two links 7 and the connecting link 8, so that the inclination angle of one link 7 is varied by expansion and contraction of the hydraulic cylinder 6. As a result, the roller unit 5 translates in the vertical direction, and the height of the conveyance surface on which the web unit 102 is placed is displaced.

  The roller unit 5 is provided with a plurality of transport rollers 10 on the transport frame 9, and transports the steel sheet pile 100 disposed thereon when the transport rollers 10 are driven. The conveying roller 10 is provided with a main roller 10a for supporting the web portion 102 of the steel sheet pile and a guide roller 10b for supporting the lower end portion of the flange portion 103 from both sides on one rotating shaft 10c. The position of the steel sheet pile 100 in the width direction is prevented.

  A motor 11 is provided as a driving means for driving the transport roller 10. The motor 11 and all the transport rollers 10 are connected by a chain 12, and the rotation of the motor 11 is transmitted to the transport rollers 10 so that all the transport rollers 10 perform the same operation. The roller unit 5 is provided with a tension adjusting mechanism 13 for adjusting the tension of the chain 12.

(First embodiment)
FIG. 4 is a side view showing the configuration of the steel sheet pile straightening device according to the first embodiment of the present invention. FIG. 5 is a cross-sectional view of the correction unit taken along line VV in FIG. The straightening device 3 includes a frame 14, a first straightening unit 15, and a second straightening unit 16. In FIG. 4, the frame 14 is partially omitted to show the mounting position of the first correction unit.

  A front support roller 17 is provided at the upstream end of the frame 14 to support the steel sheet pile 100 sent from the transport device 2a. The front support roller 17 is connected to the actuator 17a and is configured to be displaced in accordance with the vertical movement of the roller unit 5 described above.

  Moreover, the rear side support roller 18 which supports the steel sheet pile 100 sent to the conveying apparatus 2b is provided in the downstream edge part of the flame | frame 14. As shown in FIG. The rear support roller 18 is connected to an actuator (not shown) so that it can be displaced according to the vertical movement of the roller unit 5.

  The frame 14 is composed of four support columns 14a provided on the front, rear, left and right sides of the correction unit and a ceiling portion 14b provided on the upper end of the support column 14a, and is a steel sheet pile conveyed by conveyance devices 2a and 2b provided on both sides in the conveyance direction. 100 is configured to be able to pass. The frame 14 is erected on a support floor 14c, and first and second bottom receiving molds 22, 33 described later are disposed on the support floor 14c.

  A width measuring unit 19 is provided on the upstream side of the frame 14 and measures the distance from the steel sheet pile 100 carried into the frame 14. The width measuring unit 19 includes an arm extending in the horizontal direction with respect to the flange portion 103 of the steel sheet pile, and measures the distance from the flange portion 103 by contacting the outer surface of the flange portion 103. The configuration of the mechanism for measuring the distance is not particularly limited, and for example, various sensors such as an optical sensor can be used.

  By measuring the distance between the frame 14 and the steel sheet pile 100, the bending angle of the flange portion 103 of the steel sheet pile 100 can be grasped. It is determined whether the deformation is a closed deformation or an open deformation.

  As shown in FIG. 5, the first correction unit 15 is supported in a state of being suspended from the ceiling portion 14 b of the frame 14. The first correction unit 15 includes a main body portion 20 for expanding the flange portion of the steel sheet pile, an actuator 21 as an elevating means for moving the main body portion 20 up and down, and a first bottom receiving die 22 on which the steel sheet pile 100 is placed. And.

  The main body portion 20 is provided below the actuator 21 with a first vertical pressing die 23 that presses the upper surface of the web portion 102 of the steel sheet pile 100 and a first vertical pressing die 23 that is rotatable to the left and right sides. 1 horizontal pressing part 24 and the hydraulic cylinder 25 which operates the 1st horizontal pressing part 24 are provided.

  The first horizontal pressing portion 24 operates so as to expand from the first vertical pressing die 23 by the hydraulic cylinder 25.

  The 1st vertical press type | mold 23 is comprised according to the width dimension of the web part 102 of the steel sheet pile 100, and the lower end of the 1st horizontal press part 24 is pivoted by the right-and-left both ends. The 1st vertical press type | mold 23 functions as an example of the vertical press part of this invention. The first horizontal pressing portion 24 is normally stored and is expanded in the width direction of the web portion 102 by the hydraulic cylinder 25. By spreading the first horizontal pressing portion 24, the flange portion 103 is pressed from the inside, and the steel sheet pile can be corrected in a direction in which the bending angle between the flange portion 103 and the web portion 102 is increased. In the operation of expanding the flange portion 103, a force that lifts upward is applied to the web portion 102, and thus the state where the first vertical pressing die 23 is pressed against the first bottom receiving die 22 is maintained.

  The first bottom receiving die 22 is provided with a sheet pile storage recess 22 a for storing the steel sheet pile 100, and supports the lower edge portion (bent portion) of the web portion 102 and the flange portion 103 of the steel sheet pile 100. The steel sheet pile 100 contacts and separates from the first bottom receiving die 22 in accordance with the vertical movement of the roller unit of the transport device 2 as described above. At the transfer position where the roller unit 5 is located on the upper side, the state is separated from the first bottom receiving mold 22, and at the correction position where the roller unit 5 is located on the lower side, the steel sheet pile is the sheet pile of the first bottom receiving mold 22. It fits in the storage recess 22a.

  Even when the steel sheet pile is conveyed in the conveying device 2 with a shift in the width direction, the steel sheet pile is accommodated in the sheet pile accommodating recess 22a of the first bottom receiving mold 22 to thereby obtain the width of the steel sheet pile. The direction position can be determined uniformly.

  An auxiliary correction part 26 is provided outside the first bottom receiving mold 22. The auxiliary correction unit 26 normally determines the operating width of the first horizontal pressing unit 24 by coming into contact with the flange unit 103 whose bending angle is widened by the first horizontal pressing unit 24 from the outside.

  Moreover, the auxiliary correction part 26 is provided with the press cylinder 29 attached to the slide member 28 provided so that it could move up and down along a support | pillar. As will be described later, when the auxiliary correction part 26 is largely deformed so as not to fit in the second correction unit 16, the flange part 103 is pressed from both sides by the pressing cylinder 29 to keep the bending angle within a predetermined range. To correct. The correction width of the auxiliary correction portion 26 is not strictly managed as in the second correction unit 16 described later, and may be as long as the flange portion 103 is within a predetermined range.

  Further, the slide member 28 is configured to be movable along the column 14 a by the cylinder moving actuator 27, and the pressing location of the pressing cylinder 29 can be changed.

  Thereby, the auxiliary correction part 26 can correct the said deformation | transformation by pressing the said deformation | transformation part from the outer side with the press cylinder 29, when the flange part 103 is deform | transforming. Specifically, the first horizontal pressing portion 24 of the first vertical pressing mold 23 is opened so as to have a regular shape of a steel sheet pile, and the deformed portion of the flange portion 103 is moved to the first horizontal pressing portion 24 by the pressing cylinder 29. The deformation of the flange portion is corrected by pressing.

  As shown in FIG. 6, the second straightening unit 16 moves in the vertical direction connected to the vertical actuators, and the two vertical actuators 30 arranged on the ceiling 14 b of the frame along the conveying direction of the steel sheet piles. An upper die 31 and a joint correction part 32 that moves in the horizontal direction and corrects the joint part are provided.

  A second bottom receiving mold 33 is provided to face the upper mold 31. The second bottom receiving mold 33 is provided at the same height as the first bottom receiving mold 22 of the first straightening unit 15, and includes a sheet pile housing concave portion 33a and a concave groove 33b extending in the loading direction.

  Further, on both the left and right sides of the second bottom receiving mold 33, there are provided upper mold pressing portions 34 for pressing the upper mold 31 downward.

  FIG. 7 is an enlarged cross-sectional view showing the configuration of the second correction unit. The vertical actuator 30 is an actuator configured by a hydraulic cylinder or the like, and a first guide 36 is provided via a universal joint 35 provided at the lower end. The first guide 36 is moved up and down by the vertical actuator 30 and is inserted into the plate-shaped main body 37 of the upper mold 31.

  The plate-like main body 37 is guided and supported by columnar second guides 38 provided at the four corners of the support floor 14 c of the frame 14. Therefore, the plate-shaped main body 37 of the upper die 31 can be moved up and down in parallel along the second guide 38, and the vertical movement width thereof varies depending on the operation of the first guide 36 that moves up and down with the operation of the up and down actuator 30. Be regulated.

  Further, a second vertical pressing die 39 that presses the web portion 102 of the steel sheet pile 100 from above is provided at the lower end portion of the first guide 36. The second vertical pressing die 39 corresponds to an example of the vertical pressing portion of the present invention. The second vertical pressing die 39 is configured according to the width dimension of the web portion 102 of the steel sheet pile 100, presses the web portion 102 downward, and presses it against the second bottom receiving die 33.

  The upper end portion of the second vertical pressing die 39 projects outward, and is provided with a flange inner width stopper 40 that functions as an example of the width determining portion of the present invention. The flange inner width stopper 40 is slightly inside the normal dimension of the steel sheet pile 100 in consideration of the normal shape of the steel sheet pile and the stress strain of the material in the bending angle correction of the flange portion 103 by the second horizontal pressing portion 41 described later. Designed to be In the present embodiment, as shown in FIG. 10, in the case of the 4 type steel sheet pile 100, the end of the flange inner width stopper 40 is positioned about 10 mm inside with respect to the normal dimension position A, and the flange portion 103 is By correcting until the tip of the flange inner width stopper 40 comes into contact, the normal dimension can be obtained after the stress is released.

  Further, on the upper surface of the plate-shaped main body 37, a total of four width correction units 42 for moving a second horizontal pressing portion 41 described later are provided on each side. The 2nd horizontal press part 41 is an example of a horizontal press part, correct | amends the left and right flange parts 103 of the steel sheet pile 100, and is each accommodated in the attachment groove | channel 43 of the plate-shaped main body 37 on either side.

  Four width correction units 42 are arranged in the conveying direction of the steel sheet pile 100 so that left and right are alternated, and each includes a fixing member 42a, a width determining actuator 42b, and a link 42c. When the width determining actuator 42 b expands and contracts, the link 42 c rotates around the support shaft 42 d and moves the second horizontal pressing portion 41 along the mounting groove 43.

  As shown in FIG. 9, the joint correction part 32 is provided on each of the left and right sides of the second bottom receiving mold 33, and is connected to the actuator 44 and the actuator 44 to press the flange 103 of the steel sheet pile 100. 45.

  The actuator 44 moves the joint correction die 45 in a direction to be separated from and in contact with the flange portion 103. The joint correction die 45 is linearly guided by the guide 45b.

  The joint straightening mold 45 is a long member provided over the entire length of the second bottom receiving mold 33, and has a joint straightening surface 45a having an arcuate upper end. The joint straightening surface 45 a is provided with a notch 45 c at a location where the second horizontal pressing portion 41 is disposed in order to prevent interference with the second horizontal pressing portion 41.

  The second bottom receiving mold 33 is provided with a sheet pile housing recess 33 a over the entire length of the steel sheet pile 100 in the conveying direction, and supports the lower edge portions of the web portion 102 and the flange portion 103 of the steel sheet pile 100. Further, the central portion of the sheet pile storage recess 33a is provided with a groove 33b that is one step lower. When the web portion 102 is pressed downward by the recessed groove 33b and the second vertical pressing die 39, the flange portion 103 can be raised and easily corrected by bending the central portion of the web portion 102 downward. . In addition, the groove 33b is preferably set to a depth that takes into account the elastic strain of the web portion 102. By pressing the deformed web portion 102 and bending the central portion, the groove 33b is normalized with high accuracy after stress release. It can be a shape.

  As shown in FIGS. 6 and 8, the upper mold retainer 34 includes a joint retainer actuator 46 and an upper mold retainer 47 that extend upward from the support floor 14 c. The inner end 47a of the upper mold pressing portion contacts the upper surface of the upper mold plate-shaped main body 37 and presses the plate-shaped main body 37 downward.

  Next, operation | movement of the correction apparatus 1 of the steel sheet pile which concerns on this embodiment is demonstrated. The deformed steel sheet pile 100 is placed on the upstream conveying device 2a and conveyed in the direction of the correction unit 3. As described above, the deformation of the steel sheet pile includes open deformation, closed deformation, and joint deformation, and the correction device according to the present embodiment can correct any deformation.

  When the steel sheet pile is conveyed by the conveyance device 2 a, the roller unit 5, the front support roller 17, and the rear support roller 18 are all conveyance positions located on the upper side, and the steel sheet pile is the first and second of the correction unit 3. The bottom receiving molds 22 and 33 are separated from each other.

  When the steel sheet pile 100 is conveyed to the correction unit 3, the width measuring unit 19 measures the distance from the flange portion 103 of the steel sheet pile 100, identifies the deformation portion of the flange portion, and uses the deformation portion as the first correction unit. Transport to position. When the flange part of the steel sheet pile 100 measured by the width measurement part 19 is a closed deformation or an open deformation exceeding a predetermined range, the flange part 103 and the web part 102 are used by the first correction unit 15 and the auxiliary correction part 26. So that the bend angle is within a predetermined range. The correction by the first correction unit 15 is corrected so as to be in a bending angle greater than the normal shape, that is, in an open deformation state.

  Correction of the closing deformation by the first correction unit 15 is performed as follows. The transport device 2 a moves the deformed portion measured by the width measuring unit 19 to the position of the first correction unit 15. Thereafter, the conveying device is lowered to the correction position, and the deformed portion is inserted into the sheet pile storage recess 22 a of the first bottom receiving mold 22.

  Next, the actuator 21 is lowered, the first vertical pressing die 23 is brought into contact with the web portion 102 of the steel sheet pile, and the steel sheet pile is pressed against the first bottom receiving die 22. In this state, the hydraulic cylinder 25 is operated to expand the first horizontal pressing portion 24 to the side and correct the closing deformation. The correction width at this time is set so that the corrected bending angle is larger than the normal dimension as described above. At this time, since the web portion 102 of the steel sheet pile 100 is pressed by the first vertical pressing die 23, even if correction is performed in the direction of opening the flange portion 103, distortion of the web portion 102 or the like may occur. Absent.

  When the deformation location is an open deformation exceeding a predetermined range, the pressing cylinder 29 of the auxiliary correction portion 26 is extended to correct the flange portion 103 inward so that the open deformation falls within the predetermined range.

  As shown in FIG. 4, the first horizontal pressing portion 24 of the first correction unit 15 and the pressing cylinder 29 of the auxiliary correction portion 26 have a shorter length in the transport direction than the second correction unit 16. In the case of deformation over a long range, the correction part is moved by the transport unit 2a and the above operation is repeated a plurality of times.

  When the deformation location moves to the second correction unit 16, the deformation location is corrected by the second correction unit 16. In the second correction unit 16, the opening deformation is corrected to a regular shape. Further, the joint deformation can be corrected.

  The correction by the second correction unit 16 is performed by the following procedure in a state where the steel sheet pile 100 is lowered and fitted into the sheet pile housing recess 33a of the second bottom receiving mold 33. FIGS. 11-16 is a figure explaining the operation | movement of the correction of the steel sheet pile performed by a 2nd correction unit.

  FIG. 11 shows a state in which the steel sheet pile 100 is fitted in the sheet pile housing recess 33 a of the second bottom receiving mold 33. In this state, by extending the vertical actuator 30 and lowering the first guide, the upper die 31 is lowered as indicated by an arrow 90 shown in FIG. The upper plate-like main body 37 is guided by the two first guides 36 and the four second guides 38, and can move up and down in parallel without causing an inclination.

  The second vertical pressing die 39 provided at the tip of the first guide presses and fixes the web portion 102 of the steel sheet pile 100 against the second bottom receiving die 33. As described above, the sheet pile housing recess 33a of the second bottom receiving mold 33 is provided with the recessed groove 33b, so that the central portion of the web portion 102 is lowered by the pressing by the second vertical pressing die 39. The bent flange portion 103 rises, and the opening deformation of the flange portion 103 can be easily corrected. In addition, the groove 33b is preferably set to a depth that takes into account the elastic strain of the web portion 102. By pressing the deformed web portion 102 and bending the central portion, the groove 33b is normalized with high accuracy after stress release. It can be a shape.

  In this state, as shown by an arrow 91 in FIG. 13, when the width determining actuator 42 b is extended, the second horizontal pressing portion 41 moves inward as indicated by an arrow 92 to correct the opening deformation of the flange portion 103. As shown in FIG. 10, the second horizontal pressing portion 41 is provided with an abutting portion 41b on the outer portion of the main body portion 41a, and the abutting portion 41b contacts the upper end (joint portion 104) of the flange portion 103. In contact, the steel sheet pile is corrected in the direction of decreasing the bending angle. As described above, the correction width of the opening deformation can be uniformly determined by the flange portion 103 coming into contact with the flange inner width stopper 40, and by moving the second horizontal pressing portion 41 to the position. In consideration of elastic strain, the steel sheet pile can be made into a normal shape after the stress is released. Since the correction width is determined by directly bringing the flange portion 103 into contact with the flange inner width stopper 40, the correction width can be easily determined even when the position of the steel sheet pile is shifted.

  After correcting the opening deformation, the position of the second horizontal pressing portion 41 is returned, and then the first guide 36 and the upper mold 31 are raised, and the correction of the opening deformation and the closing deformation of the deformation portion is finished.

  According to the correction device according to the present embodiment, the steel sheet pile 100 having the opening deformation and the closing deformation can be corrected to have a normal shape. In addition, since the correction width can be uniformly determined by providing the flange inner width stopper 40 at a position in consideration of elastic strain, correction to a regular shape can be realized with high accuracy.

  When the joint 104 needs to be further corrected after the opening deformation is corrected, the actuator 44 is operated as shown in FIG. 14 while the first guide 36 and the upper die 31 are maintained on the lower side, and the arrow 93 is moved. As shown in FIG. 4, the joint straightening die 45 is brought close to the flange portion 103. As described above, since the joint correction die 45 is provided with the notch that allows the second horizontal pressing portion 41 to pass therethrough, the two do not interfere with each other.

  To correct the joint portion 104, the joint correction die 45 and the second horizontal pressing portion 41 are moved relative to the joint portion 104 in a state where the joint portion 104 is accommodated in a region surrounded by the joint correction die 45 and the second horizontal pressing portion 41. By pressing the joint portion 104, the joint portion 104 can be bent and corrected to a normal shape.

  Specifically, as shown by an arrow 95 in FIG. 16, by extending the joint pressing actuator 46 of the upper mold pressing portion 34, the inner end portion 47 a of the upper mold pressing portion 47 causes the plate-shaped main body of the upper mold 31 to move. Pressing downward, thereby moving the second horizontal pressing portion 41 downward.

  In this state, the actuator 44 is further extended, and the joint correction die 45 is moved to the flange portion 103 side, whereby the tip of the joint portion 104 is bent along the joint correction surface 45a. At this time, since the upper region is closed by the upper mold pressing portion 47, the joint portion 104 does not bend upward.

(Second Embodiment)
Next, a steel sheet pile straightening device according to a second embodiment of the present invention will be described. In the steel sheet pile correction device according to the present embodiment, the upper mold 51 and the second horizontal pressing portion 52 of the second correction unit 50 can both correct the opening deformation and the closing deformation of the flange portion 103. Along with this, the first correction unit 15 differs in that the procedure for deforming the closed deformation portion into a bending angle exceeding the normal shape is omitted.

  FIG. 17: is a schematic diagram which shows the structure of the upper mold | type of the 2nd correction unit of the correction apparatus of the steel sheet pile concerning 2nd Embodiment of this invention. In the present embodiment, as shown in FIG. 17, the second horizontal pressing portion 52 is provided with contact portions 52 b and 52 c on both sides of the main body portion 52 a, and the contact portions 52 b and 52 c are the flange portions 103. Both the opening deformation and the closing deformation can be corrected by abutting against the upper end (joint portion 104).

  As described above, the correction width of the opening deformation can be uniformly determined by the flange portion 103 coming into contact with the flange inner width stopper 53, and by moving the second horizontal pressing portion 52 to the position, elasticity can be obtained. In consideration of strain, the steel sheet pile can be made into a regular shape after the stress is released. Since the correction width is determined by directly bringing the flange portion 103 into contact with the flange inner width stopper 53, the correction width can be easily determined even when the position of the steel sheet pile is shifted.

  In this embodiment, since the contact portion 52c is also provided inside the second horizontal pressing portion, the contact portion 52 has a contact portion 52 so that the flange inner width stopper 53 and the contact portion 52c do not interfere with each other. A notch 52d (see FIG. 18) is provided so that the flange inner width stopper 53 can partially enter the lower side of the main body 52a.

  FIG. 18 is a plan view showing the configuration of the width adjusting mechanism of the flange inner width stopper. The flange inner width stopper 53 according to the present embodiment is configured to be extendable and contractible, and the position of the tip can be adjusted.

  The flange inner width stopper width adjusting mechanism 54 is located on the lower surface side of the upper plate-shaped main body and is provided through the first guide 36. The width adjusting mechanism 54 of the flange inner width stopper includes a support body 55 disposed on the upper side of the second vertical pressing die 39, and a movable member disposed so as to be movable in the width direction (vertical direction in the figure) with respect to the support body 55. 56. The movable member 56 is partially provided with a flange inner width stopper 53 protruding in the width direction.

  The movable member 56 is moved by a wedge member 57 positioned between the support body 55 and the movable member 56. The wedge member 57 can be advanced and retracted along the conveying direction of the steel sheet pile by an actuator 57 connected to the attachment portion 55a of the support body 55 as shown in FIG. 18, and by adjusting the insertion amount of the wedge member 57, The protrusion amount of the movable member 56 with respect to the support body 55 changes.

  Next, operation | movement of the correction apparatus of the steel sheet pile concerning this embodiment is demonstrated. Also in this embodiment of the correction device, the conveyance of the steel sheet pile and the measurement of the distance from the flange 103 by the width measuring unit 19 are the same as in the first embodiment.

  When the width measurement unit 19 causes the deformation of the opening exceeding a predetermined range such that the flange unit 103 does not fit in the second correction unit, the flange unit 103 and the web unit 102 are processed by the first correction unit 15 or the auxiliary correction unit 26. So that the bend angle is within a predetermined range.

  When the deformed portion moves to the second correction unit 50, the second corrected unit 50 corrects the deformed portion. In the second correction unit 50, the closing deformation and the opening deformation are corrected to a normal shape. Further, the joint deformation can be corrected.

  In the correction by the second correction unit 50, the steel sheet pile 100 is lowered and fitted into the sheet pile storage recess 33 a of the second bottom receiving mold 33, and then the upper mold 51 is lowered.

  The second vertical pressing die 39 provided at the tip of the first guide presses and fixes the web portion 102 of the steel sheet pile 100 against the second bottom receiving die 33. At this time, the deformed web portion 102 is corrected simultaneously.

  In the present embodiment, as shown in FIG. 19, the sheet pile storage recess 33a of the second bottom receiving mold 33 is provided with a concave groove 33b, and the second vertical pressing mold 39 and the second bottom receiving mold are provided. 33 is configured to sandwich both end portions of the web portion 102 of the steel sheet pile, and a gap 58 is formed on the center side of the sandwiched portion.

  In addition, a pressing portion 59 extending in the conveying direction of the steel sheet pile 100 protrudes from the central portion of the bottom surface 39 a of the second vertical pressing die 39. The pressing part 59 is configured to have a size enough to fit into the concave groove 33 b, and applies a pressing process that extends in the transport direction to the web part 102 when pressed by the second vertical pressing die 39. As a result, a fold extending in the transport direction is formed in the web portion 102 so as not to be inconvenient at the time of use, and the web portion 102 can be eliminated. In FIG. 19, the pressing portion 59 does not need to be provided on the second vertical pressing die 39 and may be provided on the second bottom receiving die 33.

  When the width determining actuator 42b is operated in this state, the second horizontal pressing portion 52 moves, and the flange portion 103 is pressed by the contact portions 52b and 52c to correct the deformation.

  In the case where the deformation of the flange portion 103 is a closed deformation, the flange portion 103 is pressed by the inner contact portion 52c to open outward, and then pressed by the outer contact portion 52b to reduce the bending angle. The steel sheet pile can be corrected. The correction width at this time is uniformly determined by the flange portion 103 contacting the flange inner width stopper 53. By moving the second horizontal pressing portion 52 to the position, it is possible to make the steel sheet pile into a normal shape after releasing the stress in consideration of elastic strain. Since the correction width is determined by directly bringing the flange portion 103 into contact with the flange inner width stopper 53, the correction width can be easily determined even when the position of the steel sheet pile is shifted.

  According to the correction device according to the present embodiment, the steel sheet pile 100 having the opening deformation and the closing deformation can be corrected to have a normal shape. In addition, since the correction width can be uniformly determined by providing the flange inner width stopper 53 at a position in consideration of the elastic strain, correction to a regular shape can be realized with high accuracy.

  If correction of the joint portion 104 is further required after the opening deformation is corrected, the joint correction die 45 is brought close to the flange portion 103 while maintaining the first guide 36 and the upper die 31 on the lower side.

  Whether or not the joint portion 104 needs to be corrected is determined based on the position of the second horizontal pressing portion 52 when the flange portion 103 comes into contact with the flange inner width stopper 53 as shown in FIG. Can do. That is, in the deformed joint portion 104 shown in FIG. 20B, the position of the second horizontal pressing portion 52 when the flange portion 103 abuts against the flange inner width stopper 53 is in the normal shape shown in FIG. Therefore, by detecting the position of the second horizontal pressing portion 52, the presence or absence of deformation of the joint portion 104 can be confirmed.

(Third embodiment)
FIG. 21: is a side view which shows the structure of the correction apparatus of the steel sheet pile which concerns on 3rd Embodiment of this invention. FIG. 22 is a plan view schematically showing the structure of the correction unit of FIG. The straightening device 60 is configured to include a frame 61 and a straightening unit 62. Note that, in FIG. 22, in order to show the arrangement configuration of each member of the correction unit 62, some of the members are partially omitted.

  A front support roller and a rear support roller (both not shown) for supporting the steel sheet pile 100 sent from the transport device 2a are provided at the upstream end and the downstream end of the frame 61. These rollers are configured to be able to be displaced according to the vertical movement.

  The frame 61 is composed of two support columns 61a provided on the left and right sides of the correction unit 62 and a ceiling portion 61b provided on the upper end of the support column 61a, and is a steel sheet pile conveyed by conveyance devices 2a and 2b provided on both sides in the conveyance direction. 100 is configured to be able to pass. The frame 61 is erected on the support floor 61c, and the bottom receiving mold 63 is disposed on the support floor 61c.

  A width measuring unit that measures the distance from the steel sheet pile 100 carried into the frame 61 is provided on the upstream side of the frame 61. By measuring the distance between the frame 61 and the steel sheet pile 100, the bending angle of the web portion 103 of the steel sheet pile 100 can be grasped. It is determined whether the deformation is a closed deformation or an open deformation.

  As shown in FIG. 21, the correction unit 62 includes a bottom receiving mold 63, an upper mold 64, and an external horizontal pressing correction unit 65. The upper mold 64 is supported in a state of being suspended from the ceiling portion 61 b of the frame 61. The upper mold 64 includes a main body portion 66 for expanding the flange portion of the steel sheet pile, and an actuator 67 as an elevating means for moving the main body portion 66 up and down.

  The main body 66 is provided below the actuator 67 with a vertical pressing die 68 that presses the upper surface of the web portion 102 of the steel sheet pile 100 and an internal horizontal pressing portion 69 that is pivotable to the left and right with respect to the vertical pressing die 68. And a hydraulic cylinder 70 for operating the internal horizontal pressing portion 69.

  The internal horizontal pressing portion 69 operates so as to expand from the vertical pressing die 68 by the hydraulic cylinder 70.

  The vertical pressing die 68 is configured according to the width dimension of the web portion 102 of the steel sheet pile 100, and the lower ends of the internal horizontal pressing portions 69 are pivotally attached to the left and right ends. The vertical pressing die 68 functions as an example of the vertical pressing portion of the present invention. The internal horizontal pressing portion 69 is normally stored and is expanded in the width direction of the web portion 102 by the hydraulic cylinder 70. By spreading the internal horizontal pressing portion 69, the flange portion 103 is pressed from the inside, and the steel sheet pile can be corrected in a direction in which the bending angle between the flange portion 103 and the web portion 102 is increased. In the operation of expanding the flange portion 103, a force that lifts upward is applied to the web portion 102, so that the web portion 102 is pressed against the bottom receiving die 63 by the vertical pressing die 68.

  The bottom receiving mold 63 is provided with a sheet pile storage recess 63 a for storing the steel sheet pile 100, and supports the lower edge portion (bent portion) of the web portion 102 and the flange portion 103 of the steel sheet pile 100. The steel sheet pile 100 contacts and separates from the bottom receiving die 63 according to the vertical movement of the roller unit of the transport device 2 as described above. At the transfer position where the roller unit 5 is located on the upper side, the state is separated from the bottom receiving die 63, and at the correction position where the roller unit 5 is located on the lower side, the steel sheet pile is in the sheet pile housing recess 63a of the bottom receiving die 63. And the deviation in the width direction is corrected.

  On the outside of the bottom receiving die 68, an external horizontal pressing correction portion 65 is provided. The external horizontal pressing correction portion 65 determines the operating width of the internal horizontal pressing portion 69 by abutting from the outside to the flange portion 103 whose bending angle is widened by the internal horizontal pressing portion 69 from the outside.

  In addition, the external horizontal pressing correction portion 65 includes a pressing cylinder 71 and a pressing die 72 attached to a slide member 70 provided so as to be movable up and down along the support 61a. The external horizontal pressing correction portion 65 corrects the flange portion 103 in the direction in which the pressing mold 72 presses the flange portion 103 from both sides by the pressing cylinder 71 to reduce the bending angle.

  The slide member 70 is configured to be movable along the column 61a by a cylinder moving actuator 73, and the pressing location of the pressing die 72 can be changed.

  Thereby, the external horizontal press correction | amendment part 65 can correct the said deformation | transformation by pushing the said deformation | transformation part from the outer side with the press cylinder 71, when the flange part 103 is deform | transforming. At this time, by adjusting the position of the internal horizontal pressing portion 69, it comes into contact with the flange portion 103, and the pressing width of the pressing die 72 is determined.

  FIG. 23 is a partially enlarged cross-sectional view showing the configuration of the correction unit. The presser die 72 is a long member, and has a joint correction surface 72a having an arcuate upper end. The joint correction surface 72a abuts on the tip of the joint portion 104, and guides the tip in the lower inner direction along the surface, thereby correcting the joint portion 104 into a normal shape.

  When the joint portion 104 is straightened, the holding die 72 is provided with a guide 74 for supporting the holding die 72 because a downward vertical load is generated by the tip of the joint portion 104 coming into contact with the joint straightening surface 72a. ing. When correcting the flange portion 103, basically only a horizontal load is generated by pushing on the flat surface portion at the tip of the mold, so the position where the pressing die 72 contacts the guide 74 is set as the lower limit, and is raised from the position, It is possible to correct the flange at a position where the guide 74 and the holding die 72 are separated from each other.

  Further, in order to prevent the joint portion from being retracted upward when the joint portion is corrected, an upper pressing portion 75 that protrudes outward from the inner horizontal pressing portion 69 and contacts the upper portion of the joint portion 104 is provided. Is provided.

  Next, operation | movement of the correction apparatus of the steel sheet pile concerning this embodiment is demonstrated. Also in this embodiment of the correction device, the conveyance of the steel sheet pile and the measurement of the distance from the flange 103 by the width measuring unit 19 are the same as in the first embodiment.

  When the deformed portion moves to the correction unit 62, the correction unit 62 corrects the closing deformation and the open deformation of the deformed portion into a normal shape. Further, the joint deformation can be corrected.

  In the correction by the correction unit 62, the steel sheet pile 100 is lowered and fitted into the sheet pile storage recess 63a of the bottom receiving mold 63, and then the upper mold 64 is lowered.

  A vertical pressing die 68 provided at the tip of the main body portion 66 of the upper die 64 presses and fixes the web portion 102 of the steel sheet pile 100 against the bottom receiving die 63. At this time, the deformed web portion 102 is corrected simultaneously.

  When the flange portion 103 is closed and deformed, the flange portion 103 is corrected by the internal horizontal pressing portion 69 provided in the vertical pressing die 68. At this time, the pressing width by the internal horizontal pressing portion 69 is determined by the outer surface of the flange portion 103 coming into contact with the external horizontal pressing correcting portion 65.

  When the flange portion 103 is open and deformed, the flange portion 103 is corrected by the external horizontal pressing portion 65. At this time, the inner horizontal pressing correction portion 69 is opened to a predetermined position, and the pressing die 72 of the outer horizontal pressing portion 65 is brought into contact with the flange portion 103 in a state where the upper pressing portion 75 is close to the upper portion of the joint portion. Press to touch. Since the upper portion of the joint portion 104 is closed by the upper pressing portion 75, the tip of the joint portion is bent inward along the joint correction surface 72a by the pressing by the pressing die 72, and the joint portion 104 is corrected to a normal shape. The

  As explained above, according to the steel sheet pile straightening device according to the present embodiment, by correcting the deformation portion of the steel sheet pile continuously conveyed by the first straightening unit and the second straightening unit, the normal shape is obtained. It can be. In addition, the correction unit can correct the opening deformation and the closing deformation by expanding the bending angle once and then applying a stress above the yield point to the flange portion by the horizontal pressing portion of the second correction unit. it can. In addition, as a guideline for the stress above the yield point of the flange portion, a width determining portion is provided, and a correction operation can be performed in consideration of elastic strain deformation after the stress is released.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect.

DESCRIPTION OF SYMBOLS 1,60 Straightening device system 2a, 2b Conveyance device 3,62 Straightening device 4 Installation base 5 Roller unit 6 Hydraulic cylinder 7 Link 8 Connection link 9 Conveyance frame 10 Conveyance roller 11 Motor 12 Chain 13 Tension adjustment mechanism 14, 61 Frame 14a, 61a Posts 14b, 61b Ceilings 14c, 61c Support floor 15 First correction unit 16 Second correction unit 17 Front support roller 18 Rear support roller 19 Width measurement unit 20, 66 Main unit 21, 67 Actuator 22 First bottom support Mold 22a Sheet pile storage recess 23 Holding mold 24 First horizontal pressing part 25 Hydraulic cylinder 26 Auxiliary correction part 27 Cylinder movement actuators 28, 70 Slide members 29, 71 Press cylinder 30 Upper and lower actuators 31, 64 Upper mold 32 Joint correction part 33 Second Bottom receiving mold 3 a Sheet pile storage recess 33b Groove 34 Upper mold retainer 35 Universal joint 36 First guide 37 Plate body 38 Second guide 39 Middle mold 40, 53 Flange inner width stopper 41, 52 Second horizontal pressing section 42 Width determining unit 43 Installation Groove 44 Actuator 45 Joint straightening mold 45a Joint straightening surface 45b Guide 45c Notch 55 Support body 56 Movable member 57 Wedge member 58 Clearance 59 Holding part 63 Bottom receiving mold 65 External horizontal pressing correction part 68 Vertical pressing type 69 Internal horizontal pressing part 72 Holding type 74 Guide

Claims (14)

A conveyance path along the longitudinal direction of a steel sheet pile having a web portion, two flange portions that bend and extend from both ends in the width direction of the web portion, and a joint portion provided at each end of the two flange portions. A steel sheet pile correction device that is provided inside and corrects the deformation portion of the steel sheet pile into a regular shape,
A bottom receiving mold having a sheet pile storage recess for receiving the web portion and the bent portion of the deformation portion of the steel sheet pile and determining the width direction position of the steel sheet pile;
A vertical pressing portion that presses the web portion and presses the steel sheet pile against the bottom receiving mold;
A horizontal pressing portion capable of pressing the left and right flange portions deformed with respect to the bending angle of the normal shape, and pressing the flange portion corrected to the normal shape,
The said vertical press part and a horizontal press part operate | move each independently by an independent actuator, The correction apparatus of the steel sheet pile characterized by the above-mentioned.   The apparatus for correcting a steel sheet pile according to claim 1, further comprising a measurement unit that is provided at a predetermined position around the steel sheet pile, measures a distance to the steel sheet pile, and identifies the deformed portion. .   The horizontal pressing portion is pivotally attached to the vertical pressing portion and is configured to be openable and closable, and corrects the left and right flange portions that are deformed in a closed direction with respect to the regular bending angle so as to open the left and right flange portions. The steel sheet pile straightening device according to claim 1 or 2, further comprising an upper pressing portion configured to protrude outward so as to be in contact with the upper end of the flange portion.   4. The apparatus according to claim 1, further comprising a width determining unit that determines a pressing width of the flange portion by the horizontal pressing portion by contacting the flange portion pressed by the horizontal pressing portion. The correction apparatus of the steel sheet pile as described in one. An upper die provided to be movable up and down around the vertical pressing portion;
The horizontal pressing portion includes a main body portion that contacts an upper end of the flange portion, and a contact portion that extends downward from the main body portion, and is supported so as to protrude downward from the lower surface of the upper mold. The apparatus for correcting a steel sheet pile according to any one of claims 1 to 4. The horizontal pressing portion is
A first horizontal pressing portion that is located on the upstream side in the transport direction and that widens the flange portion so that the deformed portion having a smaller bending angle than the normal shape is equal to or greater than the normal shape;
The second horizontal pressing portion that is located downstream in the conveyance direction with respect to the first horizontal pressing portion and that pushes inward a flange portion of the deformed portion having a bending angle of the regular shape or more. The correction apparatus of the steel sheet pile as described in any one of 1 to 5. The first and second horizontal pressing portions are respectively provided in the independent first correction unit and second correction unit,
The steel sheet pile straightening device according to claim 6, wherein each of the first straightening unit and the second straightening unit includes the bottom receiving mold and a vertical pressing portion. The second correction unit includes an upper mold that is provided so as to be movable up and down around the vertical pressing part, and a joint correction mold that is provided so as to be movable in the width direction and abuts on the joint part tip to correct the joint part. In addition,
The second horizontal pressing portion includes a main body portion that contacts the upper end of the flange portion and a contact portion that extends downward from the main body portion, and is supported so as to protrude downward from the lower surface of the upper mold. The straightening device for steel sheet piles according to claim 6 or 7, characterized in.   9. The steel sheet pile correction apparatus according to claim 8, wherein the joint correction mold includes a notch through which a contact portion of the second horizontal pressing portion can pass.   The horizontal pressing portion includes an internal horizontal pressing portion that is pivotally attached to the vertical pressing portion and an external horizontal pressing portion that presses from the side of the flange portion, and presses the flange portion to each other. It functions as a width determination part which determines a width | variety, The correction apparatus of the steel sheet pile of Claim 4 characterized by the above-mentioned.   The said sheet pile accommodation recessed part has the ditch | groove extended in the said conveyance direction in the width direction intermediate part, The correction apparatus of the steel sheet pile as described in any one of Claim 1 to 10 characterized by the above-mentioned.   The opposing surface of the said sheet pile accommodation recessed part and a vertical press part is formed so that the unevenness | corrugation extended in the conveyance direction of the said steel sheet pile may mutually fit, It is any one of Claim 1 to 11 characterized by the above-mentioned. Steel sheet pile straightening device.   The steel sheet pile according to any one of claims 1 to 12, wherein the sheet pile storage recess is configured so that a region near a bent portion of the steel sheet pile can be clamped by the vertical pressing portion. Straightening device.   It is provided at both ends of the bottom receiving mold in the conveying direction, and can be moved up and down between a conveying position where the web part is located above the bottom receiving mold and a correction position where the web is stored in the sheet pile storage recess. A steel sheet pile straightening device according to any one of claims 1 to 13, further comprising a support roller configured as described above.

Images