JPH0910842A - Distortion correction device - Google Patents

Abstract

(57) [Abstract] [Purpose] Depending on the desired width of the auxiliary material welded to the surface of the material to be straightened, the distance between the left and right rollers that press and rotate both sides of the auxiliary material can be easily changed to achieve the desired wide width. The distortion on both sides of the auxiliary material can be corrected easily at the same time by changing the magnitude of the pressing force on both the left and right sides, and if necessary, only the distortion on one side of the auxiliary material can be corrected. [Structure] An upper cross girder 2 is provided laterally between upper parts of left and right columns 3 and 3 installed to press a surface a to be corrected a on one side of an auxiliary material b welded to a surface a to be corrected a. A plurality of hydraulic cylinders 5 for pressing down one upper roller 6 are provided on the upper cross girder 2 so as to be laterally movable, and a drive shaft 7 that can be freely rotated in the forward and reverse directions around the axis is laterally provided between the lower parts of the columns 3 and 3. A plurality of lower rollers 8 are provided on the drive shaft 7 so as to be laterally movable so as to work together with the upper roller 6 in the vertical direction to squeeze the material b to be corrected to correct the distortion. A horizontally long conveying roller 11 for conveying the material to be straightened a was provided horizontally so as to be vertically movable.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example, ships, bridges,
The present invention relates to a strain correction device that corrects welding strain generated when an auxiliary material is attached when manufacturing a steel structure or the like, and in particular, depending on the arbitrary width of the auxiliary material, the distance between rollers that press and rotate both sides of the auxiliary material can be adjusted. It can be easily changed to correct the strain on both sides of the auxiliary material of any width at the same time, and the pressing force on both sides can be changed arbitrarily, and only the distortion on one side of the auxiliary material can be corrected if necessary. The present invention relates to a distortion correction device.

[0002]

2. Description of the Related Art Conventionally, in the manufacture of ships, bridges, steel structures, etc., the work of attaching auxiliary materials such as ribs to the base material of the main steel plate by welding is performed. When the auxiliary material is attached by welding, the base material of the main steel plate is distorted by welding.

As a device for correcting this welding distortion, there is known, for example, Japanese Patent Publication No. 7-32929, "Multiple-equipment continuous distortion correcting device". The Japanese Patent Publication No. 7-32929, "Multiple-equipment continuous strain correcting device" is a device for correcting the strain of a flat plate block or the like applied to the hull structure of various large ships.

As shown in FIG. 2 of the publication, the "Multiple-equipment continuous strain straightening device" of Japanese Patent Publication No. 7-32929 described above is a follower mounted on both left and right inner surfaces of a gate-shaped lifting guide. By pressing and rotating the surface of the base material on both sides of the auxiliary material with the roller, the distortion generated in the base material on both sides of the auxiliary material can be simultaneously corrected by sandwiching the auxiliary material.

[0005]

SUMMARY OF THE INVENTION However, the above-mentioned Japanese Patent Publication No. 7-32929, "Multiple-equipped continuous strain straightening device".
As is apparent from FIG. 2 of the publication, the driven rollers that press and rotate the base material surfaces on both sides of the auxiliary material are attached to the left and right side surfaces inside the fixed gate-shaped lifting guide. Therefore, the distance between the left and right driven rollers is constant, and the pressing force of the left and right rollers cannot be individually changed.

Therefore, in the case where the width of the auxiliary material is wide as shown in FIGS. 6 to 10, it is necessary to change the width interval of the fixed gate-shaped lifting guide, and the width of the auxiliary material can be changed. Accordingly, it cannot be used unless it is changed to a gate-shaped lifting guide of a fixed shape corresponding to the width each time, and it is not possible to respond when the pressing force needs to be changed at the left and right parts of the auxiliary material. There was a problem.

The present invention was made in view of the above problems and was devised to solve the problems. The object of the present invention is to widen any width of the auxiliary material welded to the surface of the material to be straightened. Depending on the size of the auxiliary material, you can easily change the distance between the left and right rollers that press and rotate both sides of the auxiliary material to easily distort both sides of the auxiliary material of any width and simultaneously adjust the magnitude of the pressing force on both the left and right sides. It is an object of the present invention to provide a strain correcting device which can be corrected by changing each of them, and can also correct only one side of the auxiliary material.

[0008]

In order to achieve the above object, the present invention has an auxiliary transverse girder provided laterally between the upper portions of the left and right columns which are spaced apart from each other and welded to the surface of the material to be straightened. A plurality of hydraulic cylinders that press down one upper roller that presses the surface of the material to be straightened on one side of the material are provided in the upper cross girder so as to be laterally movable, and a drive shaft that can rotate forward and backward around the axis is A plurality of lower rollers, which are provided laterally between the lower portions and which cooperate with the upper roller above and below to press the material to be straightened to correct the distortion, are provided on the drive shaft so as to be laterally movable, and the front and rear sides of the drive shaft are sandwiched between the lower rollers. In addition, a horizontally long conveying roller for conveying the material to be straightened is vertically installed so as to be vertically movable.

[0009]

The present invention having the above-described structure operates as follows. That is, the upper roller and the lower roller that press the left side and the right side of the auxiliary material welded to the material to be straightened are independently laterally moved to press both sides of the auxiliary material according to an arbitrary width of the auxiliary material. The distance between the rotating left and right upper and lower rollers can be easily changed, and the distortion on both sides of the auxiliary material of arbitrary width can be corrected easily and simultaneously by changing the magnitude of the pressing force on both sides. It also acts so as to correct only the distortion on one side of the auxiliary material, if necessary.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments shown in the drawings. 1 is a front view of the distortion correcting device, FIG. 2 is a plan view of the distortion correcting device, FIG. 3 is a front sectional view of the distortion correcting device, and FIG. 4 is a side sectional view of the distortion correcting device.
FIG. 5 is a partially enlarged view of the front surface of the distortion correcting device.

In the figure, the strain correction device 1 can easily change the interval between rollers that press and rotate both sides of the auxiliary material in accordance with the arbitrary width of the auxiliary material so that the width of both sides of the auxiliary material of arbitrary width can be changed. The feature is that the strain can be corrected simultaneously and the magnitude of the pressing force on the left and right sides can be changed, and if necessary, only the strain on one side of the auxiliary material can be corrected.

The strain correcting device 1 is provided with an upper horizontal girder 2 provided laterally above the left and right struts 3 and 3, and a plurality of laterally movably mounted on the upper lateral girder 2, and one upper roller 6 is pressed down. Hydraulic cylinder 5, a drive shaft 7 provided laterally above the left and right struts 3, 3, a plurality of lower rollers 8 provided on the drive shaft 7 so as to be laterally movable, and a conveyance roller for conveying the material to be corrected a. It is mainly composed of 11.

The upper transverse girder 2 which constitutes the upper side of the machine frame of the distortion correcting device 1 is laterally provided between the upper portions of the left and right columns 3 and 3 which are spaced from each other. The upper cross girder 2 is composed of two box girders 2a, 2a that are long in the lateral direction and are arranged side by side with a space open in the front and back. A plurality of upper roller frames 4 holding upper rollers 6 are attached so as to be laterally movable. Racks 2b and 2b are laid in the lateral direction on the upper surfaces of the front and rear box girders 2a and 2a that form the upper lateral girder 2.

One hydraulic cylinder 5 is mounted on the upper side of each upper roller frame 4 so as to face downward, and one upper roller 6 is mounted on the lower side thereof so as to be vertically movable. Each upper roller frame 4 is provided with one hydraulic cylinder 5 and one upper roller 6 that is pressed down by this one hydraulic cylinder 5.

Each upper roller frame 4 has a substantially box-like shape, the upper side of which projects above the upper surface of the upper horizontal girder 2, and the lower side of which lies below the lower surface of the upper horizontal girder 2. It projects, and its inside is hollow. A hydraulic cylinder 5 is attached downward to the upper end surface of the upper roller frame 4 protruding above the upper cross girder 2.

A hydraulic unit 5b for supplying hydraulic pressure to the hydraulic cylinder 5 to expand and contract the piston rod 5a is installed at the upper end of the right column 3 in the drawing so as to project laterally. A hose 5c for supplying a liquid is arranged between the hydraulic pressure unit 5b and the hydraulic unit 5b. Further, the pressure gauge 5d of each hydraulic cylinder 5 is attached to the upper front surface of the column 3 directly below the pressure gauge 5d. A hydraulic cylinder, for example, is used as the hydraulic cylinder 5.

The hydraulic cylinder 5 has its piston rod 5a.
Is attached from the upper end of the upper roller frame 4 downward in the internal space, and the tip of the piston rod 5a is connected to the upper surface of the elevating frame 4a attached to the lower side of the upper roller frame 4. Lifting frame 4a
Has a structure that moves up and down by the expansion and contraction of the piston rod 5a of the hydraulic cylinder 5.

A slide guide 4b for guiding the elevating frame 4a so as to be able to move up and down is provided from the middle part to the lower side of the upper roller frame 4, and the elevating frame 4a is held so as to be able to move up and down by this slide guide 4b. . One upper roller mounting plate 4c is provided at the lower part of the elevating frame 4a which is moved up and down by one hydraulic cylinder 5.
Are mounted face down.

An upper roller 6 is rotatably supported on one side surface of the upper roller mounting plate 4c.
The upper rollers 6 are mounted on different side surfaces of the upper roller mounting plate 4c alternately, and the pair of left and right upper rollers 6 that form a pair are opposite side surfaces of the upper roller mounting plate 4c. Installed on.

One upper roller 6 is pressed downward by one hydraulic cylinder 5 via the elevating frame 4a and the upper roller mounting plate 4c, and the auxiliary material b is welded to the material to be straightened a. Press one side of the surface. The other upper roller 6 paired with this is also pressed downward by one hydraulic cylinder 5 via the elevating frame 4a and the upper roller mounting plate 4c, and the auxiliary material b is welded to be corrected. The other side of the surface of the material a is pressed, and by the two hydraulic cylinders 5 and the two upper rollers 6, the left and right sides of the auxiliary material b welded to the material a to be corrected are pressed and corrected. ing.

In this case, when the auxiliary material b has a wide width like an inverted U-shaped rib as shown in the figure, one hydraulic cylinder 5 and the upper roller 6 can sandwich the auxiliary material b from the left and right. Move horizontally on the upper girder 2.

On the front side surface and the rear side surface of each upper roller frame 4 above the upper cross girder 2, the pinions 4d meshing with the racks 2b and 2b laid on the upper surfaces of the box girders 2a and 2a of the upper cross girder 2. , 4d are attached respectively. Pinion 4d has 2 on the front side and 2 on the rear side.
It is installed individually. The pinions 4d, 4d on the front side surface and the rear side surface of each upper roller frame 4 are the upper transverse girders 2.
Racks 2b, 2b laid on the upper surface of the box girders 2a, 2a
Each upper roller frame 4 is configured to laterally move the upper cross girder 2 by rolling while meshing with.

The pinion 4d on the front side surface and the pinion 4d on the rear side surface of each upper roller frame 4 are fixed to both ends of a rotary shaft that penetrates in the front-rear direction. Also,
An upper lateral movement motor 4e for driving the pinions 4d, 4d via a rotary shaft is attached to the upper portion of the upper roller frame 4. A rotary shaft having pinions 4d, 4d fixed at both ends thereof is interlockingly connected to the upper lateral movement motor 4e.

A drive shaft 7 is laterally provided between the lower portions of the left and right columns 3 and 3 which are erected apart from each other. Both ends of the drive shaft 7 are rotatably supported by left and right columns 3 and 3 so as to be rotatable in the forward and reverse directions. Drive motors 7a, 7a for driving the drive shaft 7 are attached to the outer side surfaces of the left and right struts 3, 3, and both end sides of the drive shaft 7 are interlocked with the left and right drive motors 7a, 7a. .

The drive shaft 7 is mounted in parallel directly below the laterally moving locus of the upper roller 6 mounted on the lower portion of the upper roller frame 4 which laterally moves on the upper horizontal girder 2. A plurality of lower rollers 8 are mounted on the drive shaft 7 so as to be laterally movable. The lower rollers 8 rotate in unison with the rotation of the drive shaft 7.

The lower roller 8 cooperates with the upper roller 6 to squeeze the material a to be corrected from above and below to correct the distortion, and the same number as the upper roller 6 is attached to the drive shaft 7. Each lower roller 8 has bearings 8a, 8 on both sides thereof.
a is provided, and is attached to the drive shaft 7 by being sandwiched between the left and right bearings 8a, 8a.

Left and right bearings 8a sandwiching each lower roller 8,
8a is connected to each lower roller frame 9. 1
One lower roller frame 9 is provided corresponding to each lower roller, and each lower roller 8 has a left and right bearing 8
It is interlockingly connected to the lower roller frame 9 via a and 8a.

The lower cross girder 10 is sandwiched by the drive shaft 7 under the left and right columns 3 and 3 on which the drive shaft 7 is installed.
Is installed horizontally. The lower cross girder 10 is composed of two box girders 10a, 10a that are long in the lateral direction and are arranged in parallel with each other with a space provided in the front and rear. Racks 10b, 10b are laterally installed on the inner side surfaces of the box girders 10a, 10a of the lower transverse girders 10 arranged at the front and rear.

At the lower part of the lower roller frame 9 described above,
A pinion 9 that meshes with the racks 10b and 10b provided on the inner side surfaces of the box girders 10a and 10a of the lower cross girder 10.
a and 9a are attached respectively. Pinion 9a,
9a are attached to the front and rear of the lower part of the lower roller frame 9, respectively.

The front and rear pinions 9a, 9a of each lower roller frame 9 roll while meshing with the lower surfaces of the racks 10b, 10b laid on the inner side surfaces of the box girders 10a, 10a of the lower horizontal girder 10. Roller frame 9
Has a structure in which the lower cross girder 10 is laterally moved, and the lower roller frame 9 is also laterally moved on the drive shaft 7 by the laterally moving lower roller frame 9.

The front and rear pinions 9a, 9a of each lower roller frame 9 are fixed to both ends of a rotary shaft mounted in the front-rear direction. Further, a lower lateral movement motor 9b for driving the pinions 9a, 9a via a rotary shaft is attached to the lower portion of the lower roller frame 9. A rotary shaft having pinions 9a, 9a fixed at both ends thereof is interlockingly connected to the lower lateral movement motor 9b.

Horizontally elongate conveying rollers 11 and 11 for conveying the material to be straightened a are laterally provided in front of and behind the drive shaft 7 and the lower horizontal girder 10. Front and rear transport rollers 11,
11 are mounted so that they can move up and down,
Left and right ends of 1 and 11 are rotatably supported by bearings 11a and 11a. Bearings 11a, 11a that pivotally support the respective conveyance rollers 11, 11 are supported by lower hydraulic cylinders 11b, 11b that extend and contract upward, and the lower hydraulic cylinders 11b and 11b expand and contract upward to convey the respective conveyance. The rollers 11 and 11 are structured to move up and down.

On the right and left columns 3 and 3, reference guide rollers 12 and 12 are installed on the right side and moving guide rollers 13 and 13 are installed on the left side in the figure. The reference guide roller 12 and the moving guide roller 13 adjust the lateral position of the material a to be straightened by the upper roller 6 and the lower roller 8 to an appropriate position. Two sets each are arranged between the girder 10 and between the lower cross girder 10 and the rear-side transport roller 11. Among them, the movement guide roller 13 moves in the lateral direction of the distortion correcting device 1 and contacts the lateral end of the material to be corrected a to adjust the lateral displacement of the material to be corrected a to an appropriate position.

The operation based on the configuration of the above embodiment will be described below. Conveying rollers 11, 1 of the distortion correcting device 1
1, the auxiliary material b is welded to the surface of the material to be corrected a, which is distorted, and is formed in a gate shape by the left and right columns 3 and 3 and the upper cross beam 2 of the distortion correcting device 1. Sent inside. In this case, the reference guide roller 12 and the moving guide roller 13 installed inside the left and right columns 3 and 3 adjust the lateral deviation of the material a to be straightened.

Each upper roller frame 4 mounted on the upper cross girder 2 is laterally moved so that one upper roller 6 mounted below each upper roller frame 4 is welded to the surface of the material to be straightened a. Each upper roller frame 4 is laterally moved on the upper cross girder 2 so as to be above the left side position and the right side position of the material b.

For lateral movement of each upper roller frame 4, the upper lateral movement motor 4e is driven to drive the front and rear pinions 4d,
The rack 2 on the upper surface of the box girders 2a, 2a in which the pinions 4d, 4d that rotate 4d are arranged side by side in front of and behind the upper cross girder 2.
It is performed by rolling while meshing on b and 2b.

By this operation, above the left side position and the right side position of the auxiliary material b welded to the surface of the material to be straightened a,
Each separate upper roller frame 4 will be located.
In this case, the upper roller frames 4 located above the left side position and the right side position of the auxiliary material b welded to the surface of the material to be straightened a are independently laterally moved.

Therefore, when the auxiliary material b has a wide width like an inverted U-shaped rib shown in the drawing, each upper roller frame 4 located above the left side position and the right side position of the auxiliary material b.
The lateral width can be easily adjusted by independently moving each laterally, and it is possible to easily cope with the auxiliary material b having an arbitrary lateral width.

A hydraulic cylinder attached to each upper roller frame 4 after laterally moving each upper roller frame 4 above the left and right positions of the auxiliary material b welded to the surface of the material to be straightened a. 5 is driven to extend below the piston rod 5a of the hydraulic cylinder 5. The downward extension of the piston rod 5a is performed by supplying hydraulic pressure from the hydraulic unit to the hydraulic cylinder 5 through a hose.

When the piston rod 5a of the hydraulic cylinder 5 attached to the upper roller frame 4 above the left side position of the auxiliary member b extends downward, the lifting frame 4a connected to the tip or lower end of the piston rod 5a It descends along the slide guide 4b. One upper roller 6 is attached to the side surface of the lower roller mounting plate 4c below the lowering frame 4a, and the upper roller 6 is moved downward by driving the hydraulic cylinder 5 to the left side position of the auxiliary material b. Come down to.

Similarly, when the piston rod 5a of the hydraulic cylinder 5 attached to the upper roller frame 4 above the right side of the auxiliary material b extends downward, the piston rod 5
Lifting frame 4a connected to the tip or lower end of a
Moves down along the slide guide 4b. One upper roller 6 is attached to the side surface of the lower roller mounting plate 4c at the lower part of the descending elevating frame 4a, and the upper roller 6 is lowered by the driving of the hydraulic cylinder 5 to the right side position of the auxiliary material b. Come down to.

Further, in parallel with or before and after the operation of the upper roller 6, the lower roller 8 is vertically positioned so as to sandwich the upper roller 6 of each upper roller frame 4 and the material to be corrected a. Then, each lower roller frame 9 is moved laterally.

The lateral movement of each lower roller frame 9 is performed by driving the lower lateral movement motor 9b,
9a is rotated, and the rotating pinions 9a, 9a roll while meshing with the lower surfaces of the racks 10b, 10b on the inner side surfaces of the box girders 10a, 10a arranged in front of and behind the lower cross girder 10.

By lateral movement of each lower roller frame 9,
Left and right bearings 8a connected to the lower roller frame 9,
8a laterally moves, and the lower roller 8 sandwiched between the left and right bearings 8a, 8a also integrally laterally moves to a position corresponding to each upper roller 6 vertically.

In this manner, the left and right sides of the auxiliary material b welded to the surface of the material to be straightened a are vertically sandwiched by one upper roller 6 and one lower roller 8, respectively, and further, each hydraulic pressure is applied. The piston rod 5a of the cylinder 5 is extended downward. As a result, each one upper roller 6 connected to the lower end of the piston rod 5a via the elevating frame 4a and the upper roller mounting plate 4c connects the left and right sides of the auxiliary material b welded to the surface of the material to be corrected a. Press each.

During the work of removing the distortion by the upper and lower upper rollers 6 and the lower roller 8, the lower roller 8 which receives the pressure from the upper roller 6 and presses the material a to be corrected from below by its reaction is mounted. The driving shaft 7 that is rotating rotates the lower roller 8 at a low speed in the direction in which the material to be straightened a is sent forward.

The rotation of the drive shaft 7 is performed by driving the drive motors 7a, 7a on both ends thereof. By the rotation of the lower roller 8, the material to be corrected a is sandwiched and the upper roller 6 on the upper side is also interlocked with this to rotate in the opposite direction.
Rotate in the direction to send out.

As a result, the material to be corrected a having distortion is pinched from above and below while passing between the upper roller 6 and the lower roller 8 which rotate under pressure, the distortion is removed, and the material is conveyed forward. . The to-be-corrected material a is the upper roller 6
By the pressing by, the upper roller 6 and the lower roller 8 are clamped from above and below, and are deformed in the direction opposite to the strain direction, and the strain is removed.

The upper and lower upper rollers 6 and the lower rollers 8 for pressing and rotating the left side and the right side of the auxiliary material b welded to the surface of the material a to be straightened are independently laterally moved, and each one is
The individual upper rollers 6 are driven by one hydraulic cylinder 5, so that the pressing force on the left side or the right side of the auxiliary material b can be changed and corrected. Further, if necessary, it is possible to correct the distortion on only one side of the auxiliary material b on the left side or the right side.

The present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the spirit of the present invention.

[0051]

As is apparent from the above description, according to the strain straightening apparatus of the present invention, the upper roller and the lower roller for pressing the left side and the right side of the auxiliary material welded to the material to be straightened are independent. Since it can be moved laterally, the spacing between the left and right upper and lower rollers that press and rotate both sides of the auxiliary material can be easily changed according to the desired width of the auxiliary material.
The distortion on both sides of the auxiliary material having an arbitrary width can be corrected easily and simultaneously by changing the magnitudes of the pressing forces on the left and right sides at the same time. Further, it is possible to correct only the distortion on one side of the auxiliary material, if necessary, and it is possible to obtain a very new and beneficial effect.

[Brief description of the drawings]

FIG. 1 is a front view of a distortion correcting device showing an embodiment of the present invention.

FIG. 2 is a plan view of a strain correction device showing an embodiment of the present invention.

FIG. 3 is a front cross-sectional view of the distortion correcting device showing the embodiment of the present invention.

FIG. 4 is a side sectional view of a strain straightening device showing an embodiment of the present invention.

FIG. 5 is a partial enlarged view of the front surface of the distortion correcting device showing the embodiment of the present invention.

FIG. 6 is a perspective view of a material to be straightened.

FIG. 7 is a front cross-sectional view of a material to be straightened having distortion.

FIG. 8 is a partial cross-sectional view of the material to be straightened during strain removal.

FIG. 9 is a partial cross-sectional view of the material to be straightened during strain removal.

FIG. 10 is a front cross-sectional view of the material to be straightened after strain removal.

[Explanation of symbols]

 1 Strain correction device 2 Upper horizontal girder 2a Box girder 2b Rack 3 Strut 4 Upper roller frame 4a Elevating frame 4b Slide guide 4c Upper roller mounting plate 4d Pinion 4e Upper lateral movement motor 5 Hydraulic cylinder 5a Piston rod 5b Hydraulic unit 5c Hose 5d Pressure gauge 6 Upper roller 7 Drive shaft 7a Drive motor 8 Lower roller 8a Bearing 9 Lower roller frame 9a Pinion 9b Lower lateral movement motor 10 Lower cross girder 10a Box girder 10b Rack 11 Transport roller 11a Bearing 11b Lower hydraulic cylinder 12 Reference guide roller 13 Moving guide roller a Corrective material b Auxiliary material

Claims (1)

[Claims] 1. An upper roller having an upper cross girder provided laterally between the upper parts of left and right struts which are installed apart from each other, and which presses one surface of a material to be straightened of an auxiliary material welded to the surface of the material to be straightened. A plurality of hydraulic cylinders for reducing the
A drive shaft that can rotate forward and backward around the axis is horizontally installed between the lower parts of the left and right columns, and it drives a plurality of lower rollers that work together with the upper roller above and below to clamp the material to be corrected and correct the distortion. A distortion straightening device, which is provided on a shaft so as to be laterally movable, and laterally long conveying rollers for conveying a material to be straightened are sandwiched across the drive shaft so as to be vertically movable.